diff options
Diffstat (limited to 'src/core/platform/nm-linux-platform.c')
| -rw-r--r-- | src/core/platform/nm-linux-platform.c | 9696 |
1 files changed, 0 insertions, 9696 deletions
diff --git a/src/core/platform/nm-linux-platform.c b/src/core/platform/nm-linux-platform.c deleted file mode 100644 index 7bd42bba..00000000 --- a/src/core/platform/nm-linux-platform.c +++ /dev/null @@ -1,9696 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * Copyright (C) 2012 - 2018 Red Hat, Inc. - */ - -#include "src/core/nm-default-daemon.h" - -#include "nm-linux-platform.h" - -#include <arpa/inet.h> -#include <dlfcn.h> -#include <endian.h> -#include <fcntl.h> -#include <libudev.h> -#include <net/ethernet.h> -#include <linux/fib_rules.h> -#include <linux/ip.h> -#include <linux/if.h> -#include <linux/if_bridge.h> -#include <linux/if_link.h> -#include <linux/if_tun.h> -#include <linux/if_tunnel.h> -#include <linux/if_vlan.h> -#include <linux/ip6_tunnel.h> -#include <linux/tc_act/tc_mirred.h> -#include <netinet/icmp6.h> -#include <netinet/in.h> -#include <net/if_arp.h> -#include <poll.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/statvfs.h> -#include <unistd.h> - -#include "nm-std-aux/unaligned.h" - -#include "nm-utils.h" -#include "nm-core-internal.h" -#include "nm-setting-vlan.h" - -#include "nm-glib-aux/nm-secret-utils.h" -#include "nm-glib-aux/nm-c-list.h" -#include "nm-platform/nm-netlink.h" -#include "nm-core-utils.h" -#include "nmp-object.h" -#include "nm-platform/nmp-netns.h" -#include "nm-platform/nm-platform-utils.h" -#include "nm-platform-private.h" -#include "wifi/nm-wifi-utils.h" -#include "wifi/nm-wifi-utils-wext.h" -#include "wpan/nm-wpan-utils.h" -#include "nm-glib-aux/nm-io-utils.h" -#include "nm-udev-aux/nm-udev-utils.h" - -/*****************************************************************************/ - -/* re-implement <linux/tc_act/tc_defact.h> to build against kernel - * headers that lack this. */ - -#include <linux/pkt_cls.h> - -struct tc_defact { - tc_gen; -}; - -enum { TCA_DEF_UNSPEC, TCA_DEF_TM, TCA_DEF_PARMS, TCA_DEF_DATA, TCA_DEF_PAD, __TCA_DEF_MAX }; -#define TCA_DEF_MAX (__TCA_DEF_MAX - 1) - -/*****************************************************************************/ - -/* Compat with older kernels. */ - -#define TCA_FQ_CODEL_CE_THRESHOLD 7 -#define TCA_FQ_CODEL_MEMORY_LIMIT 9 - -/*****************************************************************************/ - -#define VLAN_FLAG_MVRP 0x8 - -/*****************************************************************************/ - -#define IFQDISCSIZ 32 - -/*****************************************************************************/ - -#ifndef IFLA_PROMISCUITY - #define IFLA_PROMISCUITY 30 -#endif -#define IFLA_NUM_TX_QUEUES 31 -#define IFLA_NUM_RX_QUEUES 32 -#define IFLA_CARRIER 33 -#define IFLA_PHYS_PORT_ID 34 -#define IFLA_LINK_NETNSID 37 -#define __IFLA_MAX 39 - -#define IFLA_INET6_TOKEN 7 -#define IFLA_INET6_ADDR_GEN_MODE 8 -#define __IFLA_INET6_MAX 9 - -#define IFLA_VLAN_PROTOCOL 5 -#define __IFLA_VLAN_MAX 6 - -#define IFA_FLAGS 8 -#define __IFA_MAX 9 - -#define IFLA_MACVLAN_FLAGS 2 -#define __IFLA_MACVLAN_MAX 3 - -#define IFLA_IPTUN_LINK 1 -#define IFLA_IPTUN_LOCAL 2 -#define IFLA_IPTUN_REMOTE 3 -#define IFLA_IPTUN_TTL 4 -#define IFLA_IPTUN_TOS 5 -#define IFLA_IPTUN_ENCAP_LIMIT 6 -#define IFLA_IPTUN_FLOWINFO 7 -#define IFLA_IPTUN_FLAGS 8 -#define IFLA_IPTUN_PROTO 9 -#define IFLA_IPTUN_PMTUDISC 10 -#define __IFLA_IPTUN_MAX 19 -#ifndef IFLA_IPTUN_MAX - #define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1) -#endif - -#define IFLA_TUN_UNSPEC 0 -#define IFLA_TUN_OWNER 1 -#define IFLA_TUN_GROUP 2 -#define IFLA_TUN_TYPE 3 -#define IFLA_TUN_PI 4 -#define IFLA_TUN_VNET_HDR 5 -#define IFLA_TUN_PERSIST 6 -#define IFLA_TUN_MULTI_QUEUE 7 -#define IFLA_TUN_NUM_QUEUES 8 -#define IFLA_TUN_NUM_DISABLED_QUEUES 9 -#define __IFLA_TUN_MAX 10 -#define IFLA_TUN_MAX (__IFLA_TUN_MAX - 1) - -G_STATIC_ASSERT(RTA_MAX == (__RTA_MAX - 1)); -#define RTA_PREF 20 -#undef RTA_MAX -#define RTA_MAX (MAX((__RTA_MAX - 1), RTA_PREF)) - -#ifndef MACVLAN_FLAG_NOPROMISC - #define MACVLAN_FLAG_NOPROMISC 1 -#endif - -#define IP6_FLOWINFO_TCLASS_MASK 0x0FF00000 -#define IP6_FLOWINFO_TCLASS_SHIFT 20 -#define IP6_FLOWINFO_FLOWLABEL_MASK 0x000FFFFF - -#define IFLA_BR_VLAN_STATS_ENABLED 41 - -/*****************************************************************************/ - -/* Appeared in the kernel prior to 3.13 dated 19 January, 2014 */ -#ifndef ARPHRD_6LOWPAN - #define ARPHRD_6LOWPAN 825 -#endif - -/*****************************************************************************/ - -#define FRA_TUN_ID 12 -#define FRA_SUPPRESS_IFGROUP 13 -#define FRA_SUPPRESS_PREFIXLEN 14 -#define FRA_PAD 18 -#define FRA_L3MDEV 19 -#define FRA_UID_RANGE 20 -#define FRA_PROTOCOL 21 -#define FRA_IP_PROTO 22 -#define FRA_SPORT_RANGE 23 -#define FRA_DPORT_RANGE 24 - -/*****************************************************************************/ - -#define IFLA_MACSEC_UNSPEC 0 -#define IFLA_MACSEC_SCI 1 -#define IFLA_MACSEC_PORT 2 -#define IFLA_MACSEC_ICV_LEN 3 -#define IFLA_MACSEC_CIPHER_SUITE 4 -#define IFLA_MACSEC_WINDOW 5 -#define IFLA_MACSEC_ENCODING_SA 6 -#define IFLA_MACSEC_ENCRYPT 7 -#define IFLA_MACSEC_PROTECT 8 -#define IFLA_MACSEC_INC_SCI 9 -#define IFLA_MACSEC_ES 10 -#define IFLA_MACSEC_SCB 11 -#define IFLA_MACSEC_REPLAY_PROTECT 12 -#define IFLA_MACSEC_VALIDATION 13 -#define IFLA_MACSEC_PAD 14 -#define __IFLA_MACSEC_MAX 15 - -/*****************************************************************************/ - -#define WG_CMD_GET_DEVICE 0 -#define WG_CMD_SET_DEVICE 1 - -#define WGDEVICE_F_REPLACE_PEERS ((guint32)(1U << 0)) - -#define WGPEER_F_REMOVE_ME ((guint32)(1U << 0)) -#define WGPEER_F_REPLACE_ALLOWEDIPS ((guint32)(1U << 1)) - -#define WGDEVICE_A_UNSPEC 0 -#define WGDEVICE_A_IFINDEX 1 -#define WGDEVICE_A_IFNAME 2 -#define WGDEVICE_A_PRIVATE_KEY 3 -#define WGDEVICE_A_PUBLIC_KEY 4 -#define WGDEVICE_A_FLAGS 5 -#define WGDEVICE_A_LISTEN_PORT 6 -#define WGDEVICE_A_FWMARK 7 -#define WGDEVICE_A_PEERS 8 -#define WGDEVICE_A_MAX 8 - -#define WGPEER_A_UNSPEC 0 -#define WGPEER_A_PUBLIC_KEY 1 -#define WGPEER_A_PRESHARED_KEY 2 -#define WGPEER_A_FLAGS 3 -#define WGPEER_A_ENDPOINT 4 -#define WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL 5 -#define WGPEER_A_LAST_HANDSHAKE_TIME 6 -#define WGPEER_A_RX_BYTES 7 -#define WGPEER_A_TX_BYTES 8 -#define WGPEER_A_ALLOWEDIPS 9 -#define WGPEER_A_MAX 9 - -#define WGALLOWEDIP_A_UNSPEC 0 -#define WGALLOWEDIP_A_FAMILY 1 -#define WGALLOWEDIP_A_IPADDR 2 -#define WGALLOWEDIP_A_CIDR_MASK 3 -#define WGALLOWEDIP_A_MAX 3 - -/*****************************************************************************/ - -/* Redefine VF enums and structures that are not available on older kernels. */ - -#define IFLA_VF_UNSPEC 0 -#define IFLA_VF_MAC 1 -#define IFLA_VF_VLAN 2 -#define IFLA_VF_TX_RATE 3 -#define IFLA_VF_SPOOFCHK 4 -#define IFLA_VF_LINK_STATE 5 -#define IFLA_VF_RATE 6 -#define IFLA_VF_RSS_QUERY_EN 7 -#define IFLA_VF_STATS 8 -#define IFLA_VF_TRUST 9 -#define IFLA_VF_IB_NODE_GUID 10 -#define IFLA_VF_IB_PORT_GUID 11 -#define IFLA_VF_VLAN_LIST 12 - -#define IFLA_VF_VLAN_INFO_UNSPEC 0 -#define IFLA_VF_VLAN_INFO 1 - -/* valid for TRUST, SPOOFCHK, LINK_STATE, RSS_QUERY_EN */ -struct _ifla_vf_setting { - guint32 vf; - guint32 setting; -}; - -struct _ifla_vf_rate { - guint32 vf; - guint32 min_tx_rate; - guint32 max_tx_rate; -}; - -struct _ifla_vf_vlan_info { - guint32 vf; - guint32 vlan; /* 0 - 4095, 0 disables VLAN filter */ - guint32 qos; - guint16 vlan_proto; /* VLAN protocol, either 802.1Q or 802.1ad */ -}; - -/*****************************************************************************/ - -/* Appeared in the kernel 4.0 dated April 12, 2015 */ -#ifndef BRIDGE_VLAN_INFO_RANGE_BEGIN - #define BRIDGE_VLAN_INFO_RANGE_BEGIN (1 << 3) /* VLAN is start of vlan range */ - #define BRIDGE_VLAN_INFO_RANGE_END (1 << 4) /* VLAN is end of vlan range */ -#endif - -/*****************************************************************************/ - -#define PSCHED_TIME_UNITS_PER_SEC 1000000 - -/*****************************************************************************/ - -typedef enum { - INFINIBAND_ACTION_CREATE_CHILD, - INFINIBAND_ACTION_DELETE_CHILD, -} InfinibandAction; - -typedef enum { - CHANGE_LINK_TYPE_UNSPEC, - CHANGE_LINK_TYPE_SET_MTU, - CHANGE_LINK_TYPE_SET_ADDRESS, -} ChangeLinkType; - -typedef struct { - union { - struct { - gconstpointer address; - gsize length; - } set_address; - }; -} ChangeLinkData; - -typedef enum { - _REFRESH_ALL_TYPE_FIRST = 0, - - REFRESH_ALL_TYPE_LINKS = 0, - REFRESH_ALL_TYPE_IP4_ADDRESSES = 1, - REFRESH_ALL_TYPE_IP6_ADDRESSES = 2, - REFRESH_ALL_TYPE_IP4_ROUTES = 3, - REFRESH_ALL_TYPE_IP6_ROUTES = 4, - REFRESH_ALL_TYPE_ROUTING_RULES_IP4 = 5, - REFRESH_ALL_TYPE_ROUTING_RULES_IP6 = 6, - REFRESH_ALL_TYPE_QDISCS = 7, - REFRESH_ALL_TYPE_TFILTERS = 8, - - _REFRESH_ALL_TYPE_NUM, -} RefreshAllType; - -typedef struct { - NMPObjectType obj_type; - - /* for NLM_F_DUMP, which address family to request. */ - int addr_family; -} RefreshAllInfo; - -typedef enum { - DELAYED_ACTION_TYPE_NONE = 0, - -#define F(val, name) ((sizeof(char[(((val)) == (name)) ? 1 : -1]) * 0) + (val)) - DELAYED_ACTION_TYPE_REFRESH_ALL_LINKS = 1 << F(0, REFRESH_ALL_TYPE_LINKS), - DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ADDRESSES = 1 << F(1, REFRESH_ALL_TYPE_IP4_ADDRESSES), - DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ADDRESSES = 1 << F(2, REFRESH_ALL_TYPE_IP6_ADDRESSES), - DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ROUTES = 1 << F(3, REFRESH_ALL_TYPE_IP4_ROUTES), - DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ROUTES = 1 << F(4, REFRESH_ALL_TYPE_IP6_ROUTES), - DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_IP4 = 1 - << F(5, REFRESH_ALL_TYPE_ROUTING_RULES_IP4), - DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_IP6 = 1 - << F(6, REFRESH_ALL_TYPE_ROUTING_RULES_IP6), - DELAYED_ACTION_TYPE_REFRESH_ALL_QDISCS = 1 << F(7, REFRESH_ALL_TYPE_QDISCS), - DELAYED_ACTION_TYPE_REFRESH_ALL_TFILTERS = 1 << F(8, REFRESH_ALL_TYPE_TFILTERS), -#undef F - - DELAYED_ACTION_TYPE_REFRESH_LINK = 1 << 9, - DELAYED_ACTION_TYPE_MASTER_CONNECTED = 1 << 10, - DELAYED_ACTION_TYPE_READ_NETLINK = 1 << 11, - DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE = 1 << 12, - - __DELAYED_ACTION_TYPE_MAX, - - DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_ALL = - DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_IP4 - | DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_IP6, - - DELAYED_ACTION_TYPE_REFRESH_ALL = - DELAYED_ACTION_TYPE_REFRESH_ALL_LINKS | DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ADDRESSES - | DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ADDRESSES | DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ROUTES - | DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ROUTES - | DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_ALL | DELAYED_ACTION_TYPE_REFRESH_ALL_QDISCS - | DELAYED_ACTION_TYPE_REFRESH_ALL_TFILTERS, - - DELAYED_ACTION_TYPE_MAX = __DELAYED_ACTION_TYPE_MAX - 1, -} DelayedActionType; - -#define FOR_EACH_DELAYED_ACTION(iflags, flags_all) \ - for ((iflags) = (DelayedActionType) 0x1LL; ({ \ - gboolean _good = FALSE; \ - \ - nm_assert(nm_utils_is_power_of_two(iflags)); \ - \ - while ((iflags) <= DELAYED_ACTION_TYPE_MAX) { \ - if (NM_FLAGS_ANY((flags_all), (iflags))) { \ - _good = TRUE; \ - break; \ - } \ - (iflags) <<= 1; \ - } \ - _good; \ - }); \ - (iflags) <<= 1) - -typedef enum { - /* Negative values are errors from kernel. Add dummy member to - * make enum signed. */ - _WAIT_FOR_NL_RESPONSE_RESULT_SYSTEM_ERROR = G_MININT, - - WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN = 0, - WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK, - WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_UNKNOWN, - WAIT_FOR_NL_RESPONSE_RESULT_FAILED_RESYNC, - WAIT_FOR_NL_RESPONSE_RESULT_FAILED_POLL, - WAIT_FOR_NL_RESPONSE_RESULT_FAILED_TIMEOUT, - WAIT_FOR_NL_RESPONSE_RESULT_FAILED_DISPOSING, - WAIT_FOR_NL_RESPONSE_RESULT_FAILED_SETNS, -} WaitForNlResponseResult; - -typedef enum { - DELAYED_ACTION_RESPONSE_TYPE_VOID = 0, - DELAYED_ACTION_RESPONSE_TYPE_REFRESH_ALL_IN_PROGRESS = 1, - DELAYED_ACTION_RESPONSE_TYPE_ROUTE_GET = 2, -} DelayedActionWaitForNlResponseType; - -typedef struct { - guint32 seq_number; - WaitForNlResponseResult seq_result; - DelayedActionWaitForNlResponseType response_type; - gint64 timeout_abs_ns; - WaitForNlResponseResult * out_seq_result; - char ** out_errmsg; - union { - int * out_refresh_all_in_progress; - NMPObject **out_route_get; - gpointer out_data; - } response; -} DelayedActionWaitForNlResponseData; - -/*****************************************************************************/ - -typedef struct { - struct nl_sock *genl; - - struct nl_sock *nlh; - - GSource *event_source; - - guint32 nlh_seq_next; -#if NM_MORE_LOGGING - guint32 nlh_seq_last_handled; -#endif - guint32 nlh_seq_last_seen; - - guint32 pruning[_REFRESH_ALL_TYPE_NUM]; - - GHashTable *sysctl_get_prev_values; - CList sysctl_list; - - NMUdevClient *udev_client; - - struct { - /* which delayed actions are scheduled, as marked in @flags. - * Some types have additional arguments in the fields below. */ - DelayedActionType flags; - - /* counter that a refresh all action is in progress, separated - * by type. */ - int refresh_all_in_progress[_REFRESH_ALL_TYPE_NUM]; - - GPtrArray *list_master_connected; - GPtrArray *list_refresh_link; - GArray * list_wait_for_nl_response; - - int is_handling; - } delayed_action; -} NMLinuxPlatformPrivate; - -struct _NMLinuxPlatform { - NMPlatform parent; - NMLinuxPlatformPrivate _priv; -}; - -struct _NMLinuxPlatformClass { - NMPlatformClass parent; -}; - -G_DEFINE_TYPE(NMLinuxPlatform, nm_linux_platform, NM_TYPE_PLATFORM) - -#define NM_LINUX_PLATFORM_GET_PRIVATE(self) \ - _NM_GET_PRIVATE(self, NMLinuxPlatform, NM_IS_LINUX_PLATFORM, NMPlatform) - -/*****************************************************************************/ - -#define _NMLOG_PREFIX_NAME "platform-linux" -#define _NMLOG_DOMAIN LOGD_PLATFORM -#define _NMLOG2_DOMAIN LOGD_PLATFORM -#define _NMLOG(level, ...) _LOG(level, _NMLOG_DOMAIN, platform, __VA_ARGS__) -#define _NMLOG_err(errsv, level, ...) _LOG_err(errsv, level, _NMLOG_DOMAIN, platform, __VA_ARGS__) -#define _NMLOG2(level, ...) _LOG(level, _NMLOG2_DOMAIN, NULL, __VA_ARGS__) -#define _NMLOG2_err(errsv, level, ...) _LOG_err(errsv, level, _NMLOG2_DOMAIN, NULL, __VA_ARGS__) - -#define _LOG_print(__level, __domain, __errsv, self, ...) \ - G_STMT_START \ - { \ - char __prefix[32]; \ - const char * __p_prefix = _NMLOG_PREFIX_NAME; \ - NMPlatform *const __self = (self); \ - \ - if (__self && nm_platform_get_log_with_ptr(__self)) { \ - g_snprintf(__prefix, sizeof(__prefix), "%s[%p]", _NMLOG_PREFIX_NAME, __self); \ - __p_prefix = __prefix; \ - } \ - _nm_log(__level, \ - __domain, \ - __errsv, \ - NULL, \ - NULL, \ - "%s: " _NM_UTILS_MACRO_FIRST(__VA_ARGS__), \ - __p_prefix _NM_UTILS_MACRO_REST(__VA_ARGS__)); \ - } \ - G_STMT_END - -#define _LOG(level, domain, self, ...) \ - G_STMT_START \ - { \ - const NMLogLevel __level = (level); \ - const NMLogDomain __domain = (domain); \ - \ - if (nm_logging_enabled(__level, __domain)) { \ - _LOG_print(__level, __domain, 0, self, __VA_ARGS__); \ - } \ - } \ - G_STMT_END - -#define _LOG_err(errsv, level, domain, self, ...) \ - G_STMT_START \ - { \ - const NMLogLevel __level = (level); \ - const NMLogDomain __domain = (domain); \ - \ - if (nm_logging_enabled(__level, __domain)) { \ - int __errsv = (errsv); \ - \ - /* The %m format specifier (GNU extension) would already allow you to specify the error - * message conveniently (and nm_log would get that right too). But we don't want to depend - * on that, so instead append the message at the end. - * Currently, users are expected not to use %m in the format string. */ \ - _LOG_print( \ - __level, \ - __domain, \ - __errsv, \ - self, \ - _NM_UTILS_MACRO_FIRST(__VA_ARGS__) ": %s (%d)" _NM_UTILS_MACRO_REST(__VA_ARGS__), \ - nm_strerror_native(__errsv), \ - __errsv); \ - } \ - } \ - G_STMT_END - -/*****************************************************************************/ - -static void -delayed_action_schedule(NMPlatform *platform, DelayedActionType action_type, gpointer user_data); -static gboolean delayed_action_handle_all(NMPlatform *platform, gboolean read_netlink); -static void do_request_link_no_delayed_actions(NMPlatform *platform, int ifindex, const char *name); -static void do_request_all_no_delayed_actions(NMPlatform *platform, DelayedActionType action_type); -static void cache_on_change(NMPlatform * platform, - NMPCacheOpsType cache_op, - const NMPObject *obj_old, - const NMPObject *obj_new); -static void cache_prune_all(NMPlatform *platform); -static gboolean event_handler_read_netlink(NMPlatform *platform, gboolean wait_for_acks); -static struct nl_sock *_genl_sock(NMLinuxPlatform *platform); - -/*****************************************************************************/ - -static int -wait_for_nl_response_to_nmerr(WaitForNlResponseResult seq_result) -{ - if (seq_result == WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK) - return 0; - if (seq_result < 0) - return (int) seq_result; - return -NME_PL_NETLINK; -} - -static const char * -wait_for_nl_response_to_string(WaitForNlResponseResult seq_result, - const char * errmsg, - char * buf, - gsize buf_size) -{ - char *buf0 = buf; - - switch (seq_result) { - case WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN: - nm_utils_strbuf_append_str(&buf, &buf_size, "unknown"); - break; - case WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK: - nm_utils_strbuf_append_str(&buf, &buf_size, "success"); - break; - case WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_UNKNOWN: - nm_utils_strbuf_append_str(&buf, &buf_size, "failure"); - break; - default: - if (seq_result < 0) { - nm_utils_strbuf_append(&buf, - &buf_size, - "failure %d (%s%s%s)", - -((int) seq_result), - nm_strerror_native(-((int) seq_result)), - errmsg ? " - " : "", - errmsg ?: ""); - } else - nm_utils_strbuf_append(&buf, &buf_size, "internal failure %d", (int) seq_result); - break; - } - return buf0; -} - -/****************************************************************** - * Various utilities - ******************************************************************/ - -static int -_vlan_qos_mapping_cmp_from(gconstpointer a, gconstpointer b, gpointer user_data) -{ - const NMVlanQosMapping *map_a = a; - const NMVlanQosMapping *map_b = b; - - if (map_a->from != map_b->from) - return map_a->from < map_b->from ? -1 : 1; - return 0; -} - -static int -_vlan_qos_mapping_cmp_from_ptr(gconstpointer a, gconstpointer b, gpointer user_data) -{ - return _vlan_qos_mapping_cmp_from(*((const NMVlanQosMapping **) a), - *((const NMVlanQosMapping **) b), - NULL); -} - -/****************************************************************** - * NMLinkType functions - ******************************************************************/ - -typedef struct { - const char *type_string; - - /* IFLA_INFO_KIND / rtnl_link_get_type() where applicable; the rtnl type - * should only be specified if the device type can be created without - * additional parameters, and if the device type can be determined from - * the rtnl_type. eg, tun/tap should not be specified since both - * tun and tap devices use "tun", and InfiniBand should not be - * specified because a PKey is required at creation. Drivers set this - * value from their 'struct rtnl_link_ops' structure. - */ - const char *rtnl_type; - - /* uevent DEVTYPE where applicable, from /sys/class/net/<ifname>/uevent; - * drivers set this value from their SET_NETDEV_DEV() call and the - * 'struct device_type' name member. - */ - const char *devtype; -} LinkDesc; - -static const LinkDesc link_descs[] = { - [NM_LINK_TYPE_NONE] = {"none", NULL, NULL}, - [NM_LINK_TYPE_UNKNOWN] = {"unknown", NULL, NULL}, - [NM_LINK_TYPE_ANY] = {"any", NULL, NULL}, - - [NM_LINK_TYPE_ETHERNET] = {"ethernet", NULL, NULL}, - [NM_LINK_TYPE_INFINIBAND] = {"infiniband", NULL, NULL}, - [NM_LINK_TYPE_OLPC_MESH] = {"olpc-mesh", NULL, NULL}, - [NM_LINK_TYPE_WIFI] = {"wifi", NULL, "wlan"}, - [NM_LINK_TYPE_WWAN_NET] = {"wwan", NULL, "wwan"}, - [NM_LINK_TYPE_WIMAX] = {"wimax", "wimax", "wimax"}, - [NM_LINK_TYPE_WPAN] = {"wpan", NULL, NULL}, - [NM_LINK_TYPE_6LOWPAN] = {"6lowpan", NULL, NULL}, - - [NM_LINK_TYPE_BNEP] = {"bluetooth", NULL, "bluetooth"}, - [NM_LINK_TYPE_DUMMY] = {"dummy", "dummy", NULL}, - [NM_LINK_TYPE_GRE] = {"gre", "gre", NULL}, - [NM_LINK_TYPE_GRETAP] = {"gretap", "gretap", NULL}, - [NM_LINK_TYPE_IFB] = {"ifb", "ifb", NULL}, - [NM_LINK_TYPE_IP6TNL] = {"ip6tnl", "ip6tnl", NULL}, - [NM_LINK_TYPE_IP6GRE] = {"ip6gre", "ip6gre", NULL}, - [NM_LINK_TYPE_IP6GRETAP] = {"ip6gretap", "ip6gretap", NULL}, - [NM_LINK_TYPE_IPIP] = {"ipip", "ipip", NULL}, - [NM_LINK_TYPE_LOOPBACK] = {"loopback", NULL, NULL}, - [NM_LINK_TYPE_MACSEC] = {"macsec", "macsec", NULL}, - [NM_LINK_TYPE_MACVLAN] = {"macvlan", "macvlan", NULL}, - [NM_LINK_TYPE_MACVTAP] = {"macvtap", "macvtap", NULL}, - [NM_LINK_TYPE_OPENVSWITCH] = {"openvswitch", "openvswitch", NULL}, - [NM_LINK_TYPE_PPP] = {"ppp", NULL, "ppp"}, - [NM_LINK_TYPE_SIT] = {"sit", "sit", NULL}, - [NM_LINK_TYPE_TUN] = {"tun", "tun", NULL}, - [NM_LINK_TYPE_VETH] = {"veth", "veth", NULL}, - [NM_LINK_TYPE_VLAN] = {"vlan", "vlan", "vlan"}, - [NM_LINK_TYPE_VRF] = {"vrf", "vrf", "vrf"}, - [NM_LINK_TYPE_VXLAN] = {"vxlan", "vxlan", "vxlan"}, - [NM_LINK_TYPE_WIREGUARD] = {"wireguard", "wireguard", "wireguard"}, - - [NM_LINK_TYPE_BRIDGE] = {"bridge", "bridge", "bridge"}, - [NM_LINK_TYPE_BOND] = {"bond", "bond", "bond"}, - [NM_LINK_TYPE_TEAM] = {"team", "team", NULL}, -}; - -static const LinkDesc * -_link_desc_from_link_type(NMLinkType link_type) -{ - nm_assert(_NM_INT_NOT_NEGATIVE(link_type)); - nm_assert(link_type < G_N_ELEMENTS(link_descs)); - nm_assert(link_descs[link_type].type_string); - - return &link_descs[link_type]; -} - -static NMLinkType -_link_type_from_rtnl_type(const char *name) -{ - static const NMLinkType LIST[] = { - NM_LINK_TYPE_BOND, /* "bond" */ - NM_LINK_TYPE_BRIDGE, /* "bridge" */ - NM_LINK_TYPE_DUMMY, /* "dummy" */ - NM_LINK_TYPE_GRE, /* "gre" */ - NM_LINK_TYPE_GRETAP, /* "gretap" */ - NM_LINK_TYPE_IFB, /* "ifb" */ - NM_LINK_TYPE_IP6GRE, /* "ip6gre" */ - NM_LINK_TYPE_IP6GRETAP, /* "ip6gretap" */ - NM_LINK_TYPE_IP6TNL, /* "ip6tnl" */ - NM_LINK_TYPE_IPIP, /* "ipip" */ - NM_LINK_TYPE_MACSEC, /* "macsec" */ - NM_LINK_TYPE_MACVLAN, /* "macvlan" */ - NM_LINK_TYPE_MACVTAP, /* "macvtap" */ - NM_LINK_TYPE_OPENVSWITCH, /* "openvswitch" */ - NM_LINK_TYPE_SIT, /* "sit" */ - NM_LINK_TYPE_TEAM, /* "team" */ - NM_LINK_TYPE_TUN, /* "tun" */ - NM_LINK_TYPE_VETH, /* "veth" */ - NM_LINK_TYPE_VLAN, /* "vlan" */ - NM_LINK_TYPE_VRF, /* "vrf" */ - NM_LINK_TYPE_VXLAN, /* "vxlan" */ - NM_LINK_TYPE_WIMAX, /* "wimax" */ - NM_LINK_TYPE_WIREGUARD, /* "wireguard" */ - }; - - nm_assert(name); - - if (NM_MORE_ASSERT_ONCE(5)) { - int i, j, k; - - for (i = 0; i < G_N_ELEMENTS(LIST); i++) { - nm_assert(_link_desc_from_link_type(LIST[i]) == &link_descs[LIST[i]]); - nm_assert(link_descs[LIST[i]].rtnl_type); - if (i > 0) - nm_assert(strcmp(link_descs[LIST[i - 1]].rtnl_type, link_descs[LIST[i]].rtnl_type) - < 0); - } - for (i = 0; i < G_N_ELEMENTS(link_descs); i++) { - if (!link_descs[i].rtnl_type) - continue; - for (j = 0, k = 0; j < G_N_ELEMENTS(LIST); j++) - k += (LIST[j] == i); - nm_assert(k == 1); - } - } - - { - int imin = 0; - int imax = (G_N_ELEMENTS(LIST) - 1); - int imid = (G_N_ELEMENTS(LIST) - 1) / 2; - - for (;;) { - const int cmp = strcmp(link_descs[LIST[imid]].rtnl_type, name); - - if (G_UNLIKELY(cmp == 0)) - return LIST[imid]; - - if (cmp < 0) - imin = imid + 1; - else - imax = imid - 1; - - if (G_UNLIKELY(imin > imax)) - return NM_LINK_TYPE_NONE; - - imid = (imin + imax) / 2; - } - } -} - -static NMLinkType -_link_type_from_devtype(const char *name) -{ - static const NMLinkType LIST[] = { - NM_LINK_TYPE_BNEP, /* "bluetooth" */ - NM_LINK_TYPE_BOND, /* "bond" */ - NM_LINK_TYPE_BRIDGE, /* "bridge" */ - NM_LINK_TYPE_PPP, /* "ppp" */ - NM_LINK_TYPE_VLAN, /* "vlan" */ - NM_LINK_TYPE_VRF, /* "vrf" */ - NM_LINK_TYPE_VXLAN, /* "vxlan" */ - NM_LINK_TYPE_WIMAX, /* "wimax" */ - NM_LINK_TYPE_WIREGUARD, /* "wireguard" */ - NM_LINK_TYPE_WIFI, /* "wlan" */ - NM_LINK_TYPE_WWAN_NET, /* "wwan" */ - }; - - nm_assert(name); - - if (NM_MORE_ASSERT_ONCE(5)) { - int i, j, k; - - for (i = 0; i < G_N_ELEMENTS(LIST); i++) { - nm_assert(_link_desc_from_link_type(LIST[i]) == &link_descs[LIST[i]]); - nm_assert(link_descs[LIST[i]].devtype); - if (i > 0) - nm_assert(strcmp(link_descs[LIST[i - 1]].devtype, link_descs[LIST[i]].devtype) < 0); - } - for (i = 0; i < G_N_ELEMENTS(link_descs); i++) { - if (!link_descs[i].devtype) - continue; - for (j = 0, k = 0; j < G_N_ELEMENTS(LIST); j++) - k += (LIST[j] == i); - nm_assert(k == 1); - } - } - - { - int imin = 0; - int imax = (G_N_ELEMENTS(LIST) - 1); - int imid = (G_N_ELEMENTS(LIST) - 1) / 2; - - for (;;) { - const int cmp = strcmp(link_descs[LIST[imid]].devtype, name); - - if (G_UNLIKELY(cmp == 0)) - return LIST[imid]; - - if (cmp < 0) - imin = imid + 1; - else - imax = imid - 1; - - if (G_UNLIKELY(imin > imax)) - return NM_LINK_TYPE_NONE; - - imid = (imin + imax) / 2; - } - } -} - -static const char * -nm_link_type_to_rtnl_type_string(NMLinkType link_type) -{ - return _link_desc_from_link_type(link_type)->rtnl_type; -} - -const char * -nm_link_type_to_string(NMLinkType link_type) -{ - return _link_desc_from_link_type(link_type)->type_string; -} - -/****************************************************************** - * Utilities - ******************************************************************/ - -/* _timestamp_nl_to_ms: - * @timestamp_nl: a timestamp from ifa_cacheinfo. - * @monotonic_ms: *now* in CLOCK_MONOTONIC. Needed to estimate the current - * uptime and how often timestamp_nl wrapped. - * - * Convert the timestamp from ifa_cacheinfo to CLOCK_MONOTONIC milliseconds. - * The ifa_cacheinfo fields tstamp and cstamp contains timestamps that counts - * with in 1/100th of a second of clock_gettime(CLOCK_MONOTONIC). However, - * the uint32 counter wraps every 497 days of uptime, so we have to compensate - * for that. */ -static gint64 -_timestamp_nl_to_ms(guint32 timestamp_nl, gint64 monotonic_ms) -{ - const gint64 WRAP_INTERVAL = (((gint64) G_MAXUINT32) + 1) * (1000 / 100); - gint64 timestamp_nl_ms; - - /* convert timestamp from 1/100th of a second to msec. */ - timestamp_nl_ms = ((gint64) timestamp_nl) * (1000 / 100); - - /* timestamp wraps every 497 days. Try to compensate for that.*/ - if (timestamp_nl_ms > monotonic_ms) { - /* timestamp_nl_ms is in the future. Truncate it to *now* */ - timestamp_nl_ms = monotonic_ms; - } else if (monotonic_ms >= WRAP_INTERVAL) { - timestamp_nl_ms += (monotonic_ms / WRAP_INTERVAL) * WRAP_INTERVAL; - if (timestamp_nl_ms > monotonic_ms) - timestamp_nl_ms -= WRAP_INTERVAL; - } - - return timestamp_nl_ms; -} - -static guint32 -_addrtime_timestamp_to_nm(guint32 timestamp, gint32 *out_now_nm) -{ - gint64 now_nl; - gint64 now_nm; - gint64 result; - - /* timestamp is unset. Default to 1. */ - if (!timestamp) { - NM_SET_OUT(out_now_nm, 0); - return 1; - } - - /* do all the calculations in milliseconds scale */ - - now_nm = nm_utils_get_monotonic_timestamp_msec(); - now_nl = nm_utils_clock_gettime_msec(CLOCK_MONOTONIC); - - nm_assert(now_nm >= 1000); - nm_assert(now_nl >= 0); - - result = now_nm - (now_nl - _timestamp_nl_to_ms(timestamp, now_nl)); - - NM_SET_OUT(out_now_nm, now_nm / 1000); - - /* converting the timestamp into nm_utils_get_monotonic_timestamp_msec() scale is - * a good guess but fails in the following situations: - * - * - If the address existed before start of the process, the timestamp in nm scale would - * be negative or zero. In this case we default to 1. - * - during hibernation, the CLOCK_MONOTONIC/timestamp drifts from - * nm_utils_get_monotonic_timestamp_msec() scale. - */ - if (result <= 1000) - return 1; - - if (result > now_nm) - return now_nm / 1000; - - return result / 1000; -} - -static guint32 -_addrtime_extend_lifetime(guint32 lifetime, guint32 seconds) -{ - guint64 v; - - if (lifetime == NM_PLATFORM_LIFETIME_PERMANENT || seconds == 0) - return lifetime; - - v = (guint64) lifetime + (guint64) seconds; - return MIN(v, NM_PLATFORM_LIFETIME_PERMANENT - 1); -} - -/* The rtnl_addr object contains relative lifetimes @valid and @preferred - * that count in seconds, starting from the moment when the kernel constructed - * the netlink message. - * - * There is also a field rtnl_addr_last_update_time(), which is the absolute - * time in 1/100th of a second of clock_gettime (CLOCK_MONOTONIC) when the address - * was modified (wrapping every 497 days). - * Immediately at the time when the address was last modified, #NOW and @last_update_time - * are the same, so (only) in that case @valid and @preferred are anchored at @last_update_time. - * However, this is not true in general. As time goes by, whenever kernel sends a new address - * via netlink, the lifetimes keep counting down. - **/ -static void -_addrtime_get_lifetimes(guint32 timestamp, - guint32 lifetime, - guint32 preferred, - guint32 *out_timestamp, - guint32 *out_lifetime, - guint32 *out_preferred) -{ - gint32 now; - - if (lifetime != NM_PLATFORM_LIFETIME_PERMANENT || preferred != NM_PLATFORM_LIFETIME_PERMANENT) { - if (preferred > lifetime) - preferred = lifetime; - timestamp = _addrtime_timestamp_to_nm(timestamp, &now); - - if (now == 0) { - /* strange. failed to detect the last-update time and assumed that timestamp is 1. */ - nm_assert(timestamp == 1); - now = nm_utils_get_monotonic_timestamp_sec(); - } - if (timestamp < now) { - guint32 diff = now - timestamp; - - lifetime = _addrtime_extend_lifetime(lifetime, diff); - preferred = _addrtime_extend_lifetime(preferred, diff); - } else - nm_assert(timestamp == now); - } else - timestamp = 0; - *out_timestamp = timestamp; - *out_lifetime = lifetime; - *out_preferred = preferred; -} - -/*****************************************************************************/ - -static const NMPObject * -_lookup_cached_link(const NMPCache * cache, - int ifindex, - gboolean * completed_from_cache, - const NMPObject **link_cached) -{ - const NMPObject *obj; - - nm_assert(completed_from_cache && link_cached); - - if (!*completed_from_cache) { - obj = ifindex > 0 && cache ? nmp_cache_lookup_link(cache, ifindex) : NULL; - - *link_cached = obj; - *completed_from_cache = TRUE; - } - return *link_cached; -} - -/*****************************************************************************/ - -#define DEVTYPE_PREFIX "DEVTYPE=" - -static char * -_linktype_read_devtype(int dirfd) -{ - gs_free char *contents = NULL; - char * cont, *end; - - nm_assert(dirfd >= 0); - - if (!nm_utils_file_get_contents(dirfd, - "uevent", - 1 * 1024 * 1024, - NM_UTILS_FILE_GET_CONTENTS_FLAG_NONE, - &contents, - NULL, - NULL, - NULL)) - return NULL; - for (cont = contents; cont; cont = end) { - end = strpbrk(cont, "\r\n"); - if (end) - *end++ = '\0'; - if (strncmp(cont, DEVTYPE_PREFIX, NM_STRLEN(DEVTYPE_PREFIX)) == 0) { - cont += NM_STRLEN(DEVTYPE_PREFIX); - memmove(contents, cont, strlen(cont) + 1); - return g_steal_pointer(&contents); - } - } - return NULL; -} - -static NMLinkType -_linktype_get_type(NMPlatform * platform, - const NMPCache * cache, - const char * kind, - int ifindex, - const char * ifname, - unsigned flags, - unsigned arptype, - gboolean * completed_from_cache, - const NMPObject **link_cached, - const char ** out_kind) -{ - NMLinkType link_type; - - NMTST_ASSERT_PLATFORM_NETNS_CURRENT(platform); - nm_assert(ifname); - nm_assert(_link_type_from_devtype("wlan") == NM_LINK_TYPE_WIFI); - nm_assert(_link_type_from_rtnl_type("bond") == NM_LINK_TYPE_BOND); - - if (completed_from_cache) { - const NMPObject *obj; - - obj = _lookup_cached_link(cache, ifindex, completed_from_cache, link_cached); - - /* If we detected the link type before, we stick to that - * decision unless the "kind" or "name" changed. If "name" changed, - * it means that their type may not have been determined correctly - * due to race conditions while accessing sysfs. - * - * This way, we save additional ethtool/sysctl lookups, but moreover, - * we keep the linktype stable and don't change it as long as the link - * exists. - * - * Note that kernel *can* reuse the ifindex (on integer overflow, and - * when moving interface to other netns). Thus here there is a tiny potential - * of messing stuff up. */ - if (obj && obj->_link.netlink.is_in_netlink - && !NM_IN_SET(obj->link.type, NM_LINK_TYPE_UNKNOWN, NM_LINK_TYPE_NONE) - && nm_streq(ifname, obj->link.name) && (!kind || nm_streq0(kind, obj->link.kind))) { - nm_assert(obj->link.kind == g_intern_string(obj->link.kind)); - *out_kind = obj->link.kind; - return obj->link.type; - } - } - - /* we intern kind to not require us to keep the pointer alive. Essentially - * leaking it in a global cache. That should be safe enough, because the - * kind comes only from kernel messages, which depend on the number of - * available drivers. So, there is not the danger that we leak uncontrolled - * many kinds. */ - *out_kind = g_intern_string(kind); - - if (kind) { - link_type = _link_type_from_rtnl_type(kind); - if (link_type != NM_LINK_TYPE_NONE) - return link_type; - } - - if (arptype == ARPHRD_LOOPBACK) - return NM_LINK_TYPE_LOOPBACK; - else if (arptype == ARPHRD_INFINIBAND) - return NM_LINK_TYPE_INFINIBAND; - else if (arptype == ARPHRD_SIT) - return NM_LINK_TYPE_SIT; - else if (arptype == ARPHRD_TUNNEL6) - return NM_LINK_TYPE_IP6TNL; - else if (arptype == ARPHRD_PPP) - return NM_LINK_TYPE_PPP; - else if (arptype == ARPHRD_IEEE802154) - return NM_LINK_TYPE_WPAN; - else if (arptype == ARPHRD_6LOWPAN) - return NM_LINK_TYPE_6LOWPAN; - - { - NMPUtilsEthtoolDriverInfo driver_info; - - /* Fallback OVS detection for kernel <= 3.16 */ - if (nmp_utils_ethtool_get_driver_info(ifindex, &driver_info)) { - if (nm_streq(driver_info.driver, "openvswitch")) - return NM_LINK_TYPE_OPENVSWITCH; - - if (arptype == 256) { - /* Some s390 CTC-type devices report 256 for the encapsulation type - * for some reason, but we need to call them Ethernet. - */ - if (nm_streq(driver_info.driver, "ctcm")) - return NM_LINK_TYPE_ETHERNET; - } - } - } - - { - nm_auto_close int dirfd = -1; - gs_free char * devtype = NULL; - char ifname_verified[IFNAMSIZ]; - - dirfd = nmp_utils_sysctl_open_netdir(ifindex, ifname, ifname_verified); - if (dirfd >= 0) { - if (faccessat(dirfd, "anycast_mask", F_OK, 0) == 0) - return NM_LINK_TYPE_OLPC_MESH; - - devtype = _linktype_read_devtype(dirfd); - if (devtype) { - link_type = _link_type_from_devtype(devtype); - if (link_type != NM_LINK_TYPE_NONE) { - if (link_type == NM_LINK_TYPE_BNEP && arptype != ARPHRD_ETHER) { - /* Both BNEP and 6lowpan use DEVTYPE=bluetooth, so we must - * use arptype to distinguish between them. - */ - } else - return link_type; - } - } - - /* Fallback for drivers that don't call SET_NETDEV_DEVTYPE() */ - if (nm_wifi_utils_is_wifi(dirfd, ifname_verified)) - return NM_LINK_TYPE_WIFI; - } - - if (arptype == ARPHRD_ETHER) { - /* Misc non-upstream WWAN drivers. rmnet is Qualcomm's proprietary - * modem interface, ccmni is MediaTek's. FIXME: these drivers should - * really set devtype=WWAN. - */ - if (g_str_has_prefix(ifname, "rmnet") || g_str_has_prefix(ifname, "rev_rmnet") - || g_str_has_prefix(ifname, "ccmni")) - return NM_LINK_TYPE_WWAN_NET; - - /* Standard wired ethernet interfaces don't report an rtnl_link_type, so - * only allow fallback to Ethernet if no type is given. This should - * prevent future virtual network drivers from being treated as Ethernet - * when they should be Generic instead. - */ - if (!kind && !devtype) - return NM_LINK_TYPE_ETHERNET; - - /* The USB gadget interfaces behave and look like ordinary ethernet devices - * aside from the DEVTYPE. */ - if (nm_streq0(devtype, "gadget")) - return NM_LINK_TYPE_ETHERNET; - - /* Distributed Switch Architecture switch chips */ - if (nm_streq0(devtype, "dsa")) - return NM_LINK_TYPE_ETHERNET; - } - } - - return NM_LINK_TYPE_UNKNOWN; -} - -/****************************************************************** - * libnl unility functions and wrappers - ******************************************************************/ - -#define NLMSG_TAIL(nmsg) ((struct rtattr *) (((char *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len))) - -/* copied from iproute2's addattr_l(). */ -static gboolean -_nl_addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, int alen) -{ - int len = RTA_LENGTH(alen); - struct rtattr *rta; - - if (NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(len) > maxlen) - return FALSE; - - rta = NLMSG_TAIL(n); - rta->rta_type = type; - rta->rta_len = len; - memcpy(RTA_DATA(rta), data, alen); - n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(len); - return TRUE; -} - -/****************************************************************** - * NMPObject/netlink functions - ******************************************************************/ - -#define _check_addr_or_return_val(tb, attr, addr_len, ret_val) \ - ({ \ - const struct nlattr *__t = (tb)[(attr)]; \ - \ - if (__t) { \ - if (nla_len(__t) != (addr_len)) { \ - return ret_val; \ - } \ - } \ - !!__t; \ - }) - -#define _check_addr_or_return_null(tb, attr, addr_len) \ - _check_addr_or_return_val(tb, attr, addr_len, NULL) - -/*****************************************************************************/ - -/* Copied and heavily modified from libnl3's inet6_parse_protinfo(). */ -static gboolean -_parse_af_inet6(NMPlatform * platform, - struct nlattr * attr, - NMUtilsIPv6IfaceId *out_token, - gboolean * out_token_valid, - guint8 * out_addr_gen_mode_inv, - gboolean * out_addr_gen_mode_valid) -{ - static const struct nla_policy policy[] = { - [IFLA_INET6_FLAGS] = {.type = NLA_U32}, - [IFLA_INET6_CACHEINFO] = {.minlen = nm_offsetofend(struct ifla_cacheinfo, retrans_time)}, - [IFLA_INET6_CONF] = {.minlen = 4}, - [IFLA_INET6_STATS] = {.minlen = 8}, - [IFLA_INET6_ICMP6STATS] = {.minlen = 8}, - [IFLA_INET6_TOKEN] = {.minlen = sizeof(struct in6_addr)}, - [IFLA_INET6_ADDR_GEN_MODE] = {.type = NLA_U8}, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - struct in6_addr i6_token; - gboolean token_valid = FALSE; - gboolean addr_gen_mode_valid = FALSE; - guint8 i6_addr_gen_mode_inv = 0; - - if (nla_parse_nested_arr(tb, attr, policy) < 0) - return FALSE; - - if (tb[IFLA_INET6_CONF] && nla_len(tb[IFLA_INET6_CONF]) % 4) - return FALSE; - if (tb[IFLA_INET6_STATS] && nla_len(tb[IFLA_INET6_STATS]) % 8) - return FALSE; - if (tb[IFLA_INET6_ICMP6STATS] && nla_len(tb[IFLA_INET6_ICMP6STATS]) % 8) - return FALSE; - - if (_check_addr_or_return_val(tb, IFLA_INET6_TOKEN, sizeof(struct in6_addr), FALSE)) { - nla_memcpy(&i6_token, tb[IFLA_INET6_TOKEN], sizeof(struct in6_addr)); - token_valid = TRUE; - } - - /* Hack to detect support addrgenmode of the kernel. We only parse - * netlink messages that we receive from kernel, hence this check - * is valid. */ - if (!_nm_platform_kernel_support_detected(NM_PLATFORM_KERNEL_SUPPORT_TYPE_USER_IPV6LL)) { - /* IFLA_INET6_ADDR_GEN_MODE was added in kernel 3.17, dated 5 October, 2014. */ - _nm_platform_kernel_support_init(NM_PLATFORM_KERNEL_SUPPORT_TYPE_USER_IPV6LL, - tb[IFLA_INET6_ADDR_GEN_MODE] ? 1 : -1); - } - - if (tb[IFLA_INET6_ADDR_GEN_MODE]) { - i6_addr_gen_mode_inv = _nm_platform_uint8_inv(nla_get_u8(tb[IFLA_INET6_ADDR_GEN_MODE])); - if (i6_addr_gen_mode_inv == 0) { - /* an inverse addrgenmode of zero is unexpected. We need to reserve zero - * to signal "unset". */ - return FALSE; - } - addr_gen_mode_valid = TRUE; - } - - if (token_valid) { - *out_token_valid = token_valid; - nm_utils_ipv6_interface_identifier_get_from_addr(out_token, &i6_token); - } - if (addr_gen_mode_valid) { - *out_addr_gen_mode_valid = addr_gen_mode_valid; - *out_addr_gen_mode_inv = i6_addr_gen_mode_inv; - } - return TRUE; -} - -/*****************************************************************************/ - -static NMPObject * -_parse_lnk_bridge(const char *kind, struct nlattr *info_data) -{ - static const struct nla_policy policy[] = { - [IFLA_BR_FORWARD_DELAY] = {.type = NLA_U32}, - [IFLA_BR_HELLO_TIME] = {.type = NLA_U32}, - [IFLA_BR_MAX_AGE] = {.type = NLA_U32}, - [IFLA_BR_AGEING_TIME] = {.type = NLA_U32}, - [IFLA_BR_STP_STATE] = {.type = NLA_U32}, - [IFLA_BR_PRIORITY] = {.type = NLA_U16}, - [IFLA_BR_VLAN_PROTOCOL] = {.type = NLA_U16}, - [IFLA_BR_VLAN_STATS_ENABLED] = {.type = NLA_U8}, - [IFLA_BR_GROUP_FWD_MASK] = {.type = NLA_U16}, - [IFLA_BR_GROUP_ADDR] = {.minlen = sizeof(NMEtherAddr)}, - [IFLA_BR_MCAST_SNOOPING] = {.type = NLA_U8}, - [IFLA_BR_MCAST_ROUTER] = {.type = NLA_U8}, - [IFLA_BR_MCAST_QUERY_USE_IFADDR] = {.type = NLA_U8}, - [IFLA_BR_MCAST_QUERIER] = {.type = NLA_U8}, - [IFLA_BR_MCAST_HASH_MAX] = {.type = NLA_U32}, - [IFLA_BR_MCAST_LAST_MEMBER_CNT] = {.type = NLA_U32}, - [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = {.type = NLA_U32}, - [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = {.type = NLA_U64}, - [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = {.type = NLA_U64}, - [IFLA_BR_MCAST_QUERIER_INTVL] = {.type = NLA_U64}, - [IFLA_BR_MCAST_QUERY_INTVL] = {.type = NLA_U64}, - [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = {.type = NLA_U64}, - [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = {.type = NLA_U64}, - }; - NMPlatformLnkBridge *props; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - NMPObject * obj; - - if (!info_data || !nm_streq0(kind, "bridge")) - return NULL; - - if (nla_parse_nested_arr(tb, info_data, policy) < 0) - return NULL; - - obj = nmp_object_new(NMP_OBJECT_TYPE_LNK_BRIDGE, NULL); - - props = &obj->lnk_bridge; - *props = nm_platform_lnk_bridge_default; - - if (!_nm_platform_kernel_support_detected( - NM_PLATFORM_KERNEL_SUPPORT_TYPE_IFLA_BR_VLAN_STATS_ENABLED)) { - /* IFLA_BR_VLAN_STATS_ENABLED was added in kernel 4.10 on April 30, 2016. - * See commit 6dada9b10a0818ba72c249526a742c8c41274a73. */ - _nm_platform_kernel_support_init(NM_PLATFORM_KERNEL_SUPPORT_TYPE_IFLA_BR_VLAN_STATS_ENABLED, - tb[IFLA_BR_VLAN_STATS_ENABLED] ? 1 : -1); - } - - if (tb[IFLA_BR_FORWARD_DELAY]) - props->forward_delay = nla_get_u32(tb[IFLA_BR_FORWARD_DELAY]); - if (tb[IFLA_BR_HELLO_TIME]) - props->hello_time = nla_get_u32(tb[IFLA_BR_HELLO_TIME]); - if (tb[IFLA_BR_MAX_AGE]) - props->max_age = nla_get_u32(tb[IFLA_BR_MAX_AGE]); - if (tb[IFLA_BR_AGEING_TIME]) - props->ageing_time = nla_get_u32(tb[IFLA_BR_AGEING_TIME]); - if (tb[IFLA_BR_STP_STATE]) - props->stp_state = !!nla_get_u32(tb[IFLA_BR_STP_STATE]); - if (tb[IFLA_BR_PRIORITY]) - props->priority = nla_get_u16(tb[IFLA_BR_PRIORITY]); - if (tb[IFLA_BR_VLAN_PROTOCOL]) - props->vlan_protocol = ntohs(nla_get_u16(tb[IFLA_BR_VLAN_PROTOCOL])); - if (tb[IFLA_BR_VLAN_STATS_ENABLED]) - props->vlan_stats_enabled = nla_get_u8(tb[IFLA_BR_VLAN_STATS_ENABLED]); - if (tb[IFLA_BR_GROUP_FWD_MASK]) - props->group_fwd_mask = nla_get_u16(tb[IFLA_BR_GROUP_FWD_MASK]); - if (tb[IFLA_BR_GROUP_ADDR]) - props->group_addr = *nla_data_as(NMEtherAddr, tb[IFLA_BR_GROUP_ADDR]); - if (tb[IFLA_BR_MCAST_SNOOPING]) - props->mcast_snooping = !!nla_get_u8(tb[IFLA_BR_MCAST_SNOOPING]); - if (tb[IFLA_BR_MCAST_ROUTER]) - props->mcast_router = nla_get_u8(tb[IFLA_BR_MCAST_ROUTER]); - if (tb[IFLA_BR_MCAST_QUERY_USE_IFADDR]) - props->mcast_query_use_ifaddr = !!nla_get_u8(tb[IFLA_BR_MCAST_QUERY_USE_IFADDR]); - if (tb[IFLA_BR_MCAST_QUERIER]) - props->mcast_querier = nla_get_u8(tb[IFLA_BR_MCAST_QUERIER]); - if (tb[IFLA_BR_MCAST_HASH_MAX]) - props->mcast_hash_max = nla_get_u32(tb[IFLA_BR_MCAST_HASH_MAX]); - if (tb[IFLA_BR_MCAST_LAST_MEMBER_CNT]) - props->mcast_last_member_count = nla_get_u32(tb[IFLA_BR_MCAST_LAST_MEMBER_CNT]); - if (tb[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) - props->mcast_startup_query_count = nla_get_u32(tb[IFLA_BR_MCAST_STARTUP_QUERY_CNT]); - if (tb[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) - props->mcast_last_member_interval = nla_get_u64(tb[IFLA_BR_MCAST_LAST_MEMBER_INTVL]); - if (tb[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) - props->mcast_membership_interval = nla_get_u64(tb[IFLA_BR_MCAST_MEMBERSHIP_INTVL]); - if (tb[IFLA_BR_MCAST_QUERIER_INTVL]) - props->mcast_querier_interval = nla_get_u64(tb[IFLA_BR_MCAST_QUERIER_INTVL]); - if (tb[IFLA_BR_MCAST_QUERY_INTVL]) - props->mcast_query_interval = nla_get_u64(tb[IFLA_BR_MCAST_QUERY_INTVL]); - if (tb[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) - props->mcast_query_response_interval = nla_get_u64(tb[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]); - if (tb[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) - props->mcast_startup_query_interval = nla_get_u64(tb[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]); - - return obj; -} - -/***********************************************************************************/ - -static NMPObject * -_parse_lnk_gre(const char *kind, struct nlattr *info_data) -{ - static const struct nla_policy policy[] = { - [IFLA_GRE_LINK] = {.type = NLA_U32}, - [IFLA_GRE_IFLAGS] = {.type = NLA_U16}, - [IFLA_GRE_OFLAGS] = {.type = NLA_U16}, - [IFLA_GRE_IKEY] = {.type = NLA_U32}, - [IFLA_GRE_OKEY] = {.type = NLA_U32}, - [IFLA_GRE_LOCAL] = {.type = NLA_U32}, - [IFLA_GRE_REMOTE] = {.type = NLA_U32}, - [IFLA_GRE_TTL] = {.type = NLA_U8}, - [IFLA_GRE_TOS] = {.type = NLA_U8}, - [IFLA_GRE_PMTUDISC] = {.type = NLA_U8}, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - NMPObject * obj; - NMPlatformLnkGre *props; - gboolean is_tap; - - if (!info_data || !kind) - return NULL; - - if (nm_streq(kind, "gretap")) - is_tap = TRUE; - else if (nm_streq(kind, "gre")) - is_tap = FALSE; - else - return NULL; - - if (nla_parse_nested_arr(tb, info_data, policy) < 0) - return NULL; - - obj = nmp_object_new(is_tap ? NMP_OBJECT_TYPE_LNK_GRETAP : NMP_OBJECT_TYPE_LNK_GRE, NULL); - props = &obj->lnk_gre; - - props->parent_ifindex = tb[IFLA_GRE_LINK] ? nla_get_u32(tb[IFLA_GRE_LINK]) : 0; - props->input_flags = tb[IFLA_GRE_IFLAGS] ? ntohs(nla_get_u16(tb[IFLA_GRE_IFLAGS])) : 0; - props->output_flags = tb[IFLA_GRE_OFLAGS] ? ntohs(nla_get_u16(tb[IFLA_GRE_OFLAGS])) : 0; - props->input_key = tb[IFLA_GRE_IKEY] ? ntohl(nla_get_u32(tb[IFLA_GRE_IKEY])) : 0; - props->output_key = tb[IFLA_GRE_OKEY] ? ntohl(nla_get_u32(tb[IFLA_GRE_OKEY])) : 0; - props->local = tb[IFLA_GRE_LOCAL] ? nla_get_u32(tb[IFLA_GRE_LOCAL]) : 0; - props->remote = tb[IFLA_GRE_REMOTE] ? nla_get_u32(tb[IFLA_GRE_REMOTE]) : 0; - props->tos = tb[IFLA_GRE_TOS] ? nla_get_u8(tb[IFLA_GRE_TOS]) : 0; - props->ttl = tb[IFLA_GRE_TTL] ? nla_get_u8(tb[IFLA_GRE_TTL]) : 0; - props->path_mtu_discovery = !tb[IFLA_GRE_PMTUDISC] || !!nla_get_u8(tb[IFLA_GRE_PMTUDISC]); - props->is_tap = is_tap; - - return obj; -} - -/*****************************************************************************/ - -/* IFLA_IPOIB_* were introduced in the 3.7 kernel, but the kernel headers - * we're building against might not have those properties even though the - * running kernel might. - */ -#define IFLA_IPOIB_UNSPEC 0 -#define IFLA_IPOIB_PKEY 1 -#define IFLA_IPOIB_MODE 2 -#define IFLA_IPOIB_UMCAST 3 -#undef IFLA_IPOIB_MAX -#define IFLA_IPOIB_MAX IFLA_IPOIB_UMCAST - -#define IPOIB_MODE_DATAGRAM 0 /* using unreliable datagram QPs */ -#define IPOIB_MODE_CONNECTED 1 /* using connected QPs */ - -static NMPObject * -_parse_lnk_infiniband(const char *kind, struct nlattr *info_data) -{ - static const struct nla_policy policy[] = { - [IFLA_IPOIB_PKEY] = {.type = NLA_U16}, - [IFLA_IPOIB_MODE] = {.type = NLA_U16}, - [IFLA_IPOIB_UMCAST] = {.type = NLA_U16}, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - NMPlatformLnkInfiniband *info; - NMPObject * obj; - const char * mode; - - if (!info_data || !nm_streq0(kind, "ipoib")) - return NULL; - - if (nla_parse_nested_arr(tb, info_data, policy) < 0) - return NULL; - - if (!tb[IFLA_IPOIB_PKEY] || !tb[IFLA_IPOIB_MODE]) - return NULL; - - switch (nla_get_u16(tb[IFLA_IPOIB_MODE])) { - case IPOIB_MODE_DATAGRAM: - mode = "datagram"; - break; - case IPOIB_MODE_CONNECTED: - mode = "connected"; - break; - default: - return NULL; - } - - obj = nmp_object_new(NMP_OBJECT_TYPE_LNK_INFINIBAND, NULL); - info = &obj->lnk_infiniband; - - info->p_key = nla_get_u16(tb[IFLA_IPOIB_PKEY]); - info->mode = mode; - - return obj; -} - -/*****************************************************************************/ - -static NMPObject * -_parse_lnk_ip6tnl(const char *kind, struct nlattr *info_data) -{ - static const struct nla_policy policy[] = { - [IFLA_IPTUN_LINK] = {.type = NLA_U32}, - [IFLA_IPTUN_LOCAL] = {.minlen = sizeof(struct in6_addr)}, - [IFLA_IPTUN_REMOTE] = {.minlen = sizeof(struct in6_addr)}, - [IFLA_IPTUN_TTL] = {.type = NLA_U8}, - [IFLA_IPTUN_ENCAP_LIMIT] = {.type = NLA_U8}, - [IFLA_IPTUN_FLOWINFO] = {.type = NLA_U32}, - [IFLA_IPTUN_PROTO] = {.type = NLA_U8}, - [IFLA_IPTUN_FLAGS] = {.type = NLA_U32}, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - NMPObject * obj; - NMPlatformLnkIp6Tnl *props; - guint32 flowinfo; - - if (!info_data || !nm_streq0(kind, "ip6tnl")) - return NULL; - - if (nla_parse_nested_arr(tb, info_data, policy) < 0) - return NULL; - - obj = nmp_object_new(NMP_OBJECT_TYPE_LNK_IP6TNL, NULL); - props = &obj->lnk_ip6tnl; - - if (tb[IFLA_IPTUN_LINK]) - props->parent_ifindex = nla_get_u32(tb[IFLA_IPTUN_LINK]); - if (tb[IFLA_IPTUN_LOCAL]) - props->local = *nla_data_as(struct in6_addr, tb[IFLA_IPTUN_LOCAL]); - if (tb[IFLA_IPTUN_REMOTE]) - props->remote = *nla_data_as(struct in6_addr, tb[IFLA_IPTUN_REMOTE]); - if (tb[IFLA_IPTUN_TTL]) - props->ttl = nla_get_u8(tb[IFLA_IPTUN_TTL]); - if (tb[IFLA_IPTUN_ENCAP_LIMIT]) - props->encap_limit = nla_get_u8(tb[IFLA_IPTUN_ENCAP_LIMIT]); - if (tb[IFLA_IPTUN_FLOWINFO]) { - flowinfo = ntohl(nla_get_u32(tb[IFLA_IPTUN_FLOWINFO])); - props->flow_label = flowinfo & IP6_FLOWINFO_FLOWLABEL_MASK; - props->tclass = (flowinfo & IP6_FLOWINFO_TCLASS_MASK) >> IP6_FLOWINFO_TCLASS_SHIFT; - } - if (tb[IFLA_IPTUN_PROTO]) - props->proto = nla_get_u8(tb[IFLA_IPTUN_PROTO]); - if (tb[IFLA_IPTUN_FLAGS]) - props->flags = nla_get_u32(tb[IFLA_IPTUN_FLAGS]); - - return obj; -} - -static NMPObject * -_parse_lnk_ip6gre(const char *kind, struct nlattr *info_data) -{ - static const struct nla_policy policy[] = { - [IFLA_GRE_LINK] = {.type = NLA_U32}, - [IFLA_GRE_IFLAGS] = {.type = NLA_U16}, - [IFLA_GRE_OFLAGS] = {.type = NLA_U16}, - [IFLA_GRE_IKEY] = {.type = NLA_U32}, - [IFLA_GRE_OKEY] = {.type = NLA_U32}, - [IFLA_GRE_LOCAL] = {.type = NLA_UNSPEC, .minlen = sizeof(struct in6_addr)}, - [IFLA_GRE_REMOTE] = {.type = NLA_UNSPEC, .minlen = sizeof(struct in6_addr)}, - [IFLA_GRE_TTL] = {.type = NLA_U8}, - [IFLA_GRE_ENCAP_LIMIT] = {.type = NLA_U8}, - [IFLA_GRE_FLOWINFO] = {.type = NLA_U32}, - [IFLA_GRE_FLAGS] = {.type = NLA_U32}, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - NMPObject * obj; - NMPlatformLnkIp6Tnl *props; - guint32 flowinfo; - gboolean is_tap; - - if (!info_data || !kind) - return NULL; - - if (nm_streq(kind, "ip6gre")) - is_tap = FALSE; - else if (nm_streq(kind, "ip6gretap")) - is_tap = TRUE; - else - return NULL; - - if (nla_parse_nested_arr(tb, info_data, policy) < 0) - return NULL; - - obj = nmp_object_new(is_tap ? NMP_OBJECT_TYPE_LNK_IP6GRETAP : NMP_OBJECT_TYPE_LNK_IP6GRE, NULL); - props = &obj->lnk_ip6tnl; - props->is_gre = TRUE; - props->is_tap = is_tap; - - if (tb[IFLA_GRE_LINK]) - props->parent_ifindex = nla_get_u32(tb[IFLA_GRE_LINK]); - if (tb[IFLA_GRE_IFLAGS]) - props->input_flags = ntohs(nla_get_u16(tb[IFLA_GRE_IFLAGS])); - if (tb[IFLA_GRE_OFLAGS]) - props->output_flags = ntohs(nla_get_u16(tb[IFLA_GRE_OFLAGS])); - if (tb[IFLA_GRE_IKEY]) - props->input_key = ntohl(nla_get_u32(tb[IFLA_GRE_IKEY])); - if (tb[IFLA_GRE_OKEY]) - props->output_key = ntohl(nla_get_u32(tb[IFLA_GRE_OKEY])); - if (tb[IFLA_GRE_LOCAL]) - props->local = *nla_data_as(struct in6_addr, tb[IFLA_GRE_LOCAL]); - if (tb[IFLA_GRE_REMOTE]) - props->remote = *nla_data_as(struct in6_addr, tb[IFLA_GRE_REMOTE]); - if (tb[IFLA_GRE_TTL]) - props->ttl = nla_get_u8(tb[IFLA_GRE_TTL]); - if (tb[IFLA_GRE_ENCAP_LIMIT]) - props->encap_limit = nla_get_u8(tb[IFLA_GRE_ENCAP_LIMIT]); - if (tb[IFLA_GRE_FLOWINFO]) { - flowinfo = ntohl(nla_get_u32(tb[IFLA_GRE_FLOWINFO])); - props->flow_label = flowinfo & IP6_FLOWINFO_FLOWLABEL_MASK; - props->tclass = (flowinfo & IP6_FLOWINFO_TCLASS_MASK) >> IP6_FLOWINFO_TCLASS_SHIFT; - } - if (tb[IFLA_GRE_FLAGS]) - props->flags = nla_get_u32(tb[IFLA_GRE_FLAGS]); - - return obj; -} - -/*****************************************************************************/ - -static NMPObject * -_parse_lnk_ipip(const char *kind, struct nlattr *info_data) -{ - static const struct nla_policy policy[] = { - [IFLA_IPTUN_LINK] = {.type = NLA_U32}, - [IFLA_IPTUN_LOCAL] = {.type = NLA_U32}, - [IFLA_IPTUN_REMOTE] = {.type = NLA_U32}, - [IFLA_IPTUN_TTL] = {.type = NLA_U8}, - [IFLA_IPTUN_TOS] = {.type = NLA_U8}, - [IFLA_IPTUN_PMTUDISC] = {.type = NLA_U8}, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - NMPObject * obj; - NMPlatformLnkIpIp *props; - - if (!info_data || !nm_streq0(kind, "ipip")) - return NULL; - - if (nla_parse_nested_arr(tb, info_data, policy) < 0) - return NULL; - - obj = nmp_object_new(NMP_OBJECT_TYPE_LNK_IPIP, NULL); - props = &obj->lnk_ipip; - - props->parent_ifindex = tb[IFLA_IPTUN_LINK] ? nla_get_u32(tb[IFLA_IPTUN_LINK]) : 0; - props->local = tb[IFLA_IPTUN_LOCAL] ? nla_get_u32(tb[IFLA_IPTUN_LOCAL]) : 0; - props->remote = tb[IFLA_IPTUN_REMOTE] ? nla_get_u32(tb[IFLA_IPTUN_REMOTE]) : 0; - props->tos = tb[IFLA_IPTUN_TOS] ? nla_get_u8(tb[IFLA_IPTUN_TOS]) : 0; - props->ttl = tb[IFLA_IPTUN_TTL] ? nla_get_u8(tb[IFLA_IPTUN_TTL]) : 0; - props->path_mtu_discovery = !tb[IFLA_IPTUN_PMTUDISC] || !!nla_get_u8(tb[IFLA_IPTUN_PMTUDISC]); - - return obj; -} - -/*****************************************************************************/ - -static NMPObject * -_parse_lnk_macvlan(const char *kind, struct nlattr *info_data) -{ - static const struct nla_policy policy[] = { - [IFLA_MACVLAN_MODE] = {.type = NLA_U32}, - [IFLA_MACVLAN_FLAGS] = {.type = NLA_U16}, - }; - NMPlatformLnkMacvlan *props; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - NMPObject * obj; - gboolean tap; - - if (!info_data || !kind) - return NULL; - - if (nm_streq(kind, "macvlan")) - tap = FALSE; - else if (nm_streq(kind, "macvtap")) - tap = TRUE; - else - return NULL; - - if (nla_parse_nested_arr(tb, info_data, policy) < 0) - return NULL; - - if (!tb[IFLA_MACVLAN_MODE]) - return NULL; - - obj = nmp_object_new(tap ? NMP_OBJECT_TYPE_LNK_MACVTAP : NMP_OBJECT_TYPE_LNK_MACVLAN, NULL); - props = &obj->lnk_macvlan; - props->mode = nla_get_u32(tb[IFLA_MACVLAN_MODE]); - props->tap = tap; - - if (tb[IFLA_MACVLAN_FLAGS]) - props->no_promisc = - NM_FLAGS_HAS(nla_get_u16(tb[IFLA_MACVLAN_FLAGS]), MACVLAN_FLAG_NOPROMISC); - - return obj; -} - -/*****************************************************************************/ - -static NMPObject * -_parse_lnk_macsec(const char *kind, struct nlattr *info_data) -{ - static const struct nla_policy policy[] = { - [IFLA_MACSEC_SCI] = {.type = NLA_U64}, - [IFLA_MACSEC_ICV_LEN] = {.type = NLA_U8}, - [IFLA_MACSEC_CIPHER_SUITE] = {.type = NLA_U64}, - [IFLA_MACSEC_WINDOW] = {.type = NLA_U32}, - [IFLA_MACSEC_ENCODING_SA] = {.type = NLA_U8}, - [IFLA_MACSEC_ENCRYPT] = {.type = NLA_U8}, - [IFLA_MACSEC_PROTECT] = {.type = NLA_U8}, - [IFLA_MACSEC_INC_SCI] = {.type = NLA_U8}, - [IFLA_MACSEC_ES] = {.type = NLA_U8}, - [IFLA_MACSEC_SCB] = {.type = NLA_U8}, - [IFLA_MACSEC_REPLAY_PROTECT] = {.type = NLA_U8}, - [IFLA_MACSEC_VALIDATION] = {.type = NLA_U8}, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - NMPObject * obj; - NMPlatformLnkMacsec *props; - - if (!info_data || !nm_streq0(kind, "macsec")) - return NULL; - - if (nla_parse_nested_arr(tb, info_data, policy) < 0) - return NULL; - - obj = nmp_object_new(NMP_OBJECT_TYPE_LNK_MACSEC, NULL); - props = &obj->lnk_macsec; - - if (tb[IFLA_MACSEC_SCI]) { - props->sci = nla_get_be64(tb[IFLA_MACSEC_SCI]); - } - if (tb[IFLA_MACSEC_ICV_LEN]) { - props->icv_length = nla_get_u8(tb[IFLA_MACSEC_ICV_LEN]); - } - if (tb[IFLA_MACSEC_CIPHER_SUITE]) { - props->cipher_suite = nla_get_u64(tb[IFLA_MACSEC_CIPHER_SUITE]); - } - if (tb[IFLA_MACSEC_WINDOW]) { - props->window = nla_get_u32(tb[IFLA_MACSEC_WINDOW]); - } - if (tb[IFLA_MACSEC_ENCODING_SA]) { - props->encoding_sa = !!nla_get_u8(tb[IFLA_MACSEC_ENCODING_SA]); - } - if (tb[IFLA_MACSEC_ENCRYPT]) { - props->encrypt = !!nla_get_u8(tb[IFLA_MACSEC_ENCRYPT]); - } - if (tb[IFLA_MACSEC_PROTECT]) { - props->protect = !!nla_get_u8(tb[IFLA_MACSEC_PROTECT]); - } - if (tb[IFLA_MACSEC_INC_SCI]) { - props->include_sci = !!nla_get_u8(tb[IFLA_MACSEC_INC_SCI]); - } - if (tb[IFLA_MACSEC_ES]) { - props->es = !!nla_get_u8(tb[IFLA_MACSEC_ES]); - } - if (tb[IFLA_MACSEC_SCB]) { - props->scb = !!nla_get_u8(tb[IFLA_MACSEC_SCB]); - } - if (tb[IFLA_MACSEC_REPLAY_PROTECT]) { - props->replay_protect = !!nla_get_u8(tb[IFLA_MACSEC_REPLAY_PROTECT]); - } - if (tb[IFLA_MACSEC_VALIDATION]) { - props->validation = nla_get_u8(tb[IFLA_MACSEC_VALIDATION]); - } - - return obj; -} - -/*****************************************************************************/ - -static NMPObject * -_parse_lnk_sit(const char *kind, struct nlattr *info_data) -{ - static const struct nla_policy policy[] = { - [IFLA_IPTUN_LINK] = {.type = NLA_U32}, - [IFLA_IPTUN_LOCAL] = {.type = NLA_U32}, - [IFLA_IPTUN_REMOTE] = {.type = NLA_U32}, - [IFLA_IPTUN_TTL] = {.type = NLA_U8}, - [IFLA_IPTUN_TOS] = {.type = NLA_U8}, - [IFLA_IPTUN_PMTUDISC] = {.type = NLA_U8}, - [IFLA_IPTUN_FLAGS] = {.type = NLA_U16}, - [IFLA_IPTUN_PROTO] = {.type = NLA_U8}, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - NMPObject * obj; - NMPlatformLnkSit *props; - - if (!info_data || !nm_streq0(kind, "sit")) - return NULL; - - if (nla_parse_nested_arr(tb, info_data, policy) < 0) - return NULL; - - obj = nmp_object_new(NMP_OBJECT_TYPE_LNK_SIT, NULL); - props = &obj->lnk_sit; - - props->parent_ifindex = tb[IFLA_IPTUN_LINK] ? nla_get_u32(tb[IFLA_IPTUN_LINK]) : 0; - props->local = tb[IFLA_IPTUN_LOCAL] ? nla_get_u32(tb[IFLA_IPTUN_LOCAL]) : 0; - props->remote = tb[IFLA_IPTUN_REMOTE] ? nla_get_u32(tb[IFLA_IPTUN_REMOTE]) : 0; - props->tos = tb[IFLA_IPTUN_TOS] ? nla_get_u8(tb[IFLA_IPTUN_TOS]) : 0; - props->ttl = tb[IFLA_IPTUN_TTL] ? nla_get_u8(tb[IFLA_IPTUN_TTL]) : 0; - props->path_mtu_discovery = !tb[IFLA_IPTUN_PMTUDISC] || !!nla_get_u8(tb[IFLA_IPTUN_PMTUDISC]); - props->flags = tb[IFLA_IPTUN_FLAGS] ? nla_get_u16(tb[IFLA_IPTUN_FLAGS]) : 0; - props->proto = tb[IFLA_IPTUN_PROTO] ? nla_get_u8(tb[IFLA_IPTUN_PROTO]) : 0; - - return obj; -} - -/*****************************************************************************/ - -static NMPObject * -_parse_lnk_tun(const char *kind, struct nlattr *info_data) -{ - static const struct nla_policy policy[] = { - [IFLA_TUN_OWNER] = {.type = NLA_U32}, - [IFLA_TUN_GROUP] = {.type = NLA_U32}, - [IFLA_TUN_TYPE] = {.type = NLA_U8}, - [IFLA_TUN_PI] = {.type = NLA_U8}, - [IFLA_TUN_VNET_HDR] = {.type = NLA_U8}, - [IFLA_TUN_PERSIST] = {.type = NLA_U8}, - [IFLA_TUN_MULTI_QUEUE] = {.type = NLA_U8}, - [IFLA_TUN_NUM_QUEUES] = {.type = NLA_U32}, - [IFLA_TUN_NUM_DISABLED_QUEUES] = {.type = NLA_U32}, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - NMPObject * obj; - NMPlatformLnkTun *props; - - if (!info_data || !nm_streq0(kind, "tun")) - return NULL; - - if (nla_parse_nested_arr(tb, info_data, policy) < 0) - return NULL; - - if (!tb[IFLA_TUN_TYPE]) - return NULL; - - obj = nmp_object_new(NMP_OBJECT_TYPE_LNK_TUN, NULL); - props = &obj->lnk_tun; - - props->type = nla_get_u8(tb[IFLA_TUN_TYPE]); - - props->pi = !!nla_get_u8_cond(tb, IFLA_TUN_PI, FALSE); - props->vnet_hdr = !!nla_get_u8_cond(tb, IFLA_TUN_VNET_HDR, FALSE); - props->multi_queue = !!nla_get_u8_cond(tb, IFLA_TUN_MULTI_QUEUE, FALSE); - props->persist = !!nla_get_u8_cond(tb, IFLA_TUN_PERSIST, FALSE); - - if (tb[IFLA_TUN_OWNER]) { - props->owner_valid = TRUE; - props->owner = nla_get_u32(tb[IFLA_TUN_OWNER]); - } - if (tb[IFLA_TUN_GROUP]) { - props->group_valid = TRUE; - props->group = nla_get_u32(tb[IFLA_TUN_GROUP]); - } - return obj; -} - -/*****************************************************************************/ - -static gboolean -_vlan_qos_mapping_from_nla(struct nlattr * nlattr, - const NMVlanQosMapping **out_map, - guint * out_n_map) -{ - struct nlattr * nla; - int remaining; - gs_unref_ptrarray GPtrArray *array = NULL; - - G_STATIC_ASSERT(sizeof(NMVlanQosMapping) == sizeof(struct ifla_vlan_qos_mapping)); - G_STATIC_ASSERT(sizeof(((NMVlanQosMapping *) 0)->to) - == sizeof(((struct ifla_vlan_qos_mapping *) 0)->to)); - G_STATIC_ASSERT(sizeof(((NMVlanQosMapping *) 0)->from) - == sizeof(((struct ifla_vlan_qos_mapping *) 0)->from)); - G_STATIC_ASSERT(sizeof(NMVlanQosMapping) - == sizeof(((NMVlanQosMapping *) 0)->from) - + sizeof(((NMVlanQosMapping *) 0)->to)); - - nm_assert(out_map && !*out_map); - nm_assert(out_n_map && !*out_n_map); - - if (!nlattr) - return TRUE; - - array = g_ptr_array_new(); - nla_for_each_nested (nla, nlattr, remaining) { - if (nla_len(nla) < sizeof(NMVlanQosMapping)) - return FALSE; - g_ptr_array_add(array, nla_data(nla)); - } - - if (array->len > 0) { - NMVlanQosMapping *list; - guint i, j; - - /* The sorting is necessary, because for egress mapping, kernel - * doesn't sent the items strictly sorted by the from field. */ - g_ptr_array_sort_with_data(array, _vlan_qos_mapping_cmp_from_ptr, NULL); - - list = g_new(NMVlanQosMapping, array->len); - - for (i = 0, j = 0; i < array->len; i++) { - NMVlanQosMapping *map; - - map = array->pdata[i]; - - /* kernel doesn't really send us duplicates. Just be extra cautious - * because we want strong guarantees about the sort order and uniqueness - * of our mapping list (for simpler equality comparison). */ - if (j > 0 && list[j - 1].from == map->from) - list[j - 1] = *map; - else - list[j++] = *map; - } - - *out_n_map = j; - *out_map = list; - } - - return TRUE; -} - -/* Copied and heavily modified from libnl3's vlan_parse() */ -static NMPObject * -_parse_lnk_vlan(const char *kind, struct nlattr *info_data) -{ - static const struct nla_policy policy[] = { - [IFLA_VLAN_ID] = {.type = NLA_U16}, - [IFLA_VLAN_FLAGS] = {.minlen = nm_offsetofend(struct ifla_vlan_flags, flags)}, - [IFLA_VLAN_INGRESS_QOS] = {.type = NLA_NESTED}, - [IFLA_VLAN_EGRESS_QOS] = {.type = NLA_NESTED}, - [IFLA_VLAN_PROTOCOL] = {.type = NLA_U16}, - }; - struct nlattr *tb[G_N_ELEMENTS(policy)]; - nm_auto_nmpobj NMPObject *obj = NULL; - NMPObject * obj_result; - - if (!info_data || !nm_streq0(kind, "vlan")) - return NULL; - - if (nla_parse_nested_arr(tb, info_data, policy) < 0) - return NULL; - - if (!tb[IFLA_VLAN_ID]) - return NULL; - - obj = nmp_object_new(NMP_OBJECT_TYPE_LNK_VLAN, NULL); - obj->lnk_vlan.id = nla_get_u16(tb[IFLA_VLAN_ID]); - - if (tb[IFLA_VLAN_FLAGS]) { - struct ifla_vlan_flags flags; - - nla_memcpy(&flags, tb[IFLA_VLAN_FLAGS], sizeof(flags)); - - obj->lnk_vlan.flags = flags.flags; - } - - if (!_vlan_qos_mapping_from_nla(tb[IFLA_VLAN_INGRESS_QOS], - &obj->_lnk_vlan.ingress_qos_map, - &obj->_lnk_vlan.n_ingress_qos_map)) - return NULL; - - if (!_vlan_qos_mapping_from_nla(tb[IFLA_VLAN_EGRESS_QOS], - &obj->_lnk_vlan.egress_qos_map, - &obj->_lnk_vlan.n_egress_qos_map)) - return NULL; - - obj_result = obj; - obj = NULL; - return obj_result; -} - -/*****************************************************************************/ - -/* The installed kernel headers might not have VXLAN stuff at all, or - * they might have the original properties, but not PORT, GROUP6, or LOCAL6. - * So until we depend on kernel >= 3.11, we just ignore the actual enum - * in if_link.h and define the values ourselves. - */ -#define IFLA_VXLAN_UNSPEC 0 -#define IFLA_VXLAN_ID 1 -#define IFLA_VXLAN_GROUP 2 -#define IFLA_VXLAN_LINK 3 -#define IFLA_VXLAN_LOCAL 4 -#define IFLA_VXLAN_TTL 5 -#define IFLA_VXLAN_TOS 6 -#define IFLA_VXLAN_LEARNING 7 -#define IFLA_VXLAN_AGEING 8 -#define IFLA_VXLAN_LIMIT 9 -#define IFLA_VXLAN_PORT_RANGE 10 -#define IFLA_VXLAN_PROXY 11 -#define IFLA_VXLAN_RSC 12 -#define IFLA_VXLAN_L2MISS 13 -#define IFLA_VXLAN_L3MISS 14 -#define IFLA_VXLAN_PORT 15 -#define IFLA_VXLAN_GROUP6 16 -#define IFLA_VXLAN_LOCAL6 17 -#undef IFLA_VXLAN_MAX -#define IFLA_VXLAN_MAX IFLA_VXLAN_LOCAL6 - -#define IFLA_VRF_TABLE 1 - -/* older kernel header might not contain 'struct ifla_vxlan_port_range'. - * Redefine it. */ -struct nm_ifla_vxlan_port_range { - guint16 low; - guint16 high; -}; - -static NMPObject * -_parse_lnk_vxlan(const char *kind, struct nlattr *info_data) -{ - static const struct nla_policy policy[] = { - [IFLA_VXLAN_ID] = {.type = NLA_U32}, - [IFLA_VXLAN_GROUP] = {.type = NLA_U32}, - [IFLA_VXLAN_GROUP6] = {.type = NLA_UNSPEC, .minlen = sizeof(struct in6_addr)}, - [IFLA_VXLAN_LINK] = {.type = NLA_U32}, - [IFLA_VXLAN_LOCAL] = {.type = NLA_U32}, - [IFLA_VXLAN_LOCAL6] = {.type = NLA_UNSPEC, .minlen = sizeof(struct in6_addr)}, - [IFLA_VXLAN_TOS] = {.type = NLA_U8}, - [IFLA_VXLAN_TTL] = {.type = NLA_U8}, - [IFLA_VXLAN_LEARNING] = {.type = NLA_U8}, - [IFLA_VXLAN_AGEING] = {.type = NLA_U32}, - [IFLA_VXLAN_LIMIT] = {.type = NLA_U32}, - [IFLA_VXLAN_PORT_RANGE] = {.type = NLA_UNSPEC, - .minlen = sizeof(struct nm_ifla_vxlan_port_range)}, - [IFLA_VXLAN_PROXY] = {.type = NLA_U8}, - [IFLA_VXLAN_RSC] = {.type = NLA_U8}, - [IFLA_VXLAN_L2MISS] = {.type = NLA_U8}, - [IFLA_VXLAN_L3MISS] = {.type = NLA_U8}, - [IFLA_VXLAN_PORT] = {.type = NLA_U16}, - }; - NMPlatformLnkVxlan *props; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - NMPObject * obj; - - if (!info_data || !nm_streq0(kind, "vxlan")) - return NULL; - - if (nla_parse_nested_arr(tb, info_data, policy) < 0) - return NULL; - - obj = nmp_object_new(NMP_OBJECT_TYPE_LNK_VXLAN, NULL); - - props = &obj->lnk_vxlan; - - if (tb[IFLA_VXLAN_LINK]) - props->parent_ifindex = nla_get_u32(tb[IFLA_VXLAN_LINK]); - if (tb[IFLA_VXLAN_ID]) - props->id = nla_get_u32(tb[IFLA_VXLAN_ID]); - if (tb[IFLA_VXLAN_GROUP]) - props->group = nla_get_u32(tb[IFLA_VXLAN_GROUP]); - if (tb[IFLA_VXLAN_LOCAL]) - props->local = nla_get_u32(tb[IFLA_VXLAN_LOCAL]); - if (tb[IFLA_VXLAN_LOCAL6]) - props->local6 = *nla_data_as(struct in6_addr, tb[IFLA_VXLAN_LOCAL6]); - if (tb[IFLA_VXLAN_GROUP6]) - props->group6 = *nla_data_as(struct in6_addr, tb[IFLA_VXLAN_GROUP6]); - - if (tb[IFLA_VXLAN_AGEING]) - props->ageing = nla_get_u32(tb[IFLA_VXLAN_AGEING]); - if (tb[IFLA_VXLAN_LIMIT]) - props->limit = nla_get_u32(tb[IFLA_VXLAN_LIMIT]); - if (tb[IFLA_VXLAN_TOS]) - props->tos = nla_get_u8(tb[IFLA_VXLAN_TOS]); - if (tb[IFLA_VXLAN_TTL]) - props->ttl = nla_get_u8(tb[IFLA_VXLAN_TTL]); - - if (tb[IFLA_VXLAN_PORT]) - props->dst_port = ntohs(nla_get_u16(tb[IFLA_VXLAN_PORT])); - - if (tb[IFLA_VXLAN_PORT_RANGE]) { - struct nm_ifla_vxlan_port_range *range; - - range = nla_data_as(struct nm_ifla_vxlan_port_range, tb[IFLA_VXLAN_PORT_RANGE]); - props->src_port_min = ntohs(range->low); - props->src_port_max = ntohs(range->high); - } - - if (tb[IFLA_VXLAN_LEARNING]) - props->learning = !!nla_get_u8(tb[IFLA_VXLAN_LEARNING]); - if (tb[IFLA_VXLAN_PROXY]) - props->proxy = !!nla_get_u8(tb[IFLA_VXLAN_PROXY]); - if (tb[IFLA_VXLAN_RSC]) - props->rsc = !!nla_get_u8(tb[IFLA_VXLAN_RSC]); - if (tb[IFLA_VXLAN_L2MISS]) - props->l2miss = !!nla_get_u8(tb[IFLA_VXLAN_L2MISS]); - if (tb[IFLA_VXLAN_L3MISS]) - props->l3miss = !!nla_get_u8(tb[IFLA_VXLAN_L3MISS]); - - return obj; -} - -static NMPObject * -_parse_lnk_vrf(const char *kind, struct nlattr *info_data) -{ - static const struct nla_policy policy[] = { - [IFLA_VRF_TABLE] = {.type = NLA_U32}, - }; - NMPlatformLnkVrf *props; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - NMPObject * obj; - - if (!info_data || !nm_streq0(kind, "vrf")) - return NULL; - - if (nla_parse_nested_arr(tb, info_data, policy) < 0) - return NULL; - - obj = nmp_object_new(NMP_OBJECT_TYPE_LNK_VRF, NULL); - - props = &obj->lnk_vrf; - - if (tb[IFLA_VRF_TABLE]) - props->table = nla_get_u32(tb[IFLA_VRF_TABLE]); - - return obj; -} - -/*****************************************************************************/ - -static gboolean -_wireguard_update_from_allowed_ips_nla(NMPWireGuardAllowedIP *allowed_ip, struct nlattr *nlattr) -{ - static const struct nla_policy policy[] = { - [WGALLOWEDIP_A_FAMILY] = {.type = NLA_U16}, - [WGALLOWEDIP_A_IPADDR] = {.minlen = sizeof(struct in_addr)}, - [WGALLOWEDIP_A_CIDR_MASK] = {.type = NLA_U8}, - }; - struct nlattr *tb[G_N_ELEMENTS(policy)]; - int family; - int addr_len; - - if (nla_parse_nested_arr(tb, nlattr, policy) < 0) - return FALSE; - - if (!tb[WGALLOWEDIP_A_FAMILY]) - return FALSE; - - family = nla_get_u16(tb[WGALLOWEDIP_A_FAMILY]); - if (family == AF_INET) - addr_len = sizeof(in_addr_t); - else if (family == AF_INET6) - addr_len = sizeof(struct in6_addr); - else - return FALSE; - - _check_addr_or_return_val(tb, WGALLOWEDIP_A_IPADDR, addr_len, FALSE); - - *allowed_ip = (NMPWireGuardAllowedIP){ - .family = family, - }; - - nm_assert((int) allowed_ip->family == family); - - if (tb[WGALLOWEDIP_A_IPADDR]) - nla_memcpy(&allowed_ip->addr, tb[WGALLOWEDIP_A_IPADDR], addr_len); - if (tb[WGALLOWEDIP_A_CIDR_MASK]) - allowed_ip->mask = nla_get_u8(tb[WGALLOWEDIP_A_CIDR_MASK]); - - return TRUE; -} - -typedef struct { - CList lst; - NMPWireGuardPeer data; -} WireGuardPeerConstruct; - -static gboolean -_wireguard_update_from_peers_nla(CList *peers, GArray **p_allowed_ips, struct nlattr *peer_attr) -{ - static const struct nla_policy policy[] = { - [WGPEER_A_PUBLIC_KEY] = {.minlen = NMP_WIREGUARD_PUBLIC_KEY_LEN}, - [WGPEER_A_PRESHARED_KEY] = {}, - [WGPEER_A_FLAGS] = {.type = NLA_U32}, - [WGPEER_A_ENDPOINT] = {}, - [WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL] = {.type = NLA_U16}, - [WGPEER_A_LAST_HANDSHAKE_TIME] = {}, - [WGPEER_A_RX_BYTES] = {.type = NLA_U64}, - [WGPEER_A_TX_BYTES] = {.type = NLA_U64}, - [WGPEER_A_ALLOWEDIPS] = {.type = NLA_NESTED}, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - WireGuardPeerConstruct *peer_c; - - if (nla_parse_nested_arr(tb, peer_attr, policy) < 0) - return FALSE; - - if (!tb[WGPEER_A_PUBLIC_KEY]) - return FALSE; - - /* a peer with the same public key as last peer is just a continuation for extra AllowedIPs */ - peer_c = c_list_last_entry(peers, WireGuardPeerConstruct, lst); - if (peer_c - && !memcmp(nla_data(tb[WGPEER_A_PUBLIC_KEY]), - peer_c->data.public_key, - NMP_WIREGUARD_PUBLIC_KEY_LEN)) { - G_STATIC_ASSERT_EXPR(NMP_WIREGUARD_PUBLIC_KEY_LEN == sizeof(peer_c->data.public_key)); - /* this message is a continuation of the previous peer. - * Only parse WGPEER_A_ALLOWEDIPS below. */ - } else { - /* otherwise, start a new peer */ - peer_c = g_slice_new0(WireGuardPeerConstruct); - c_list_link_tail(peers, &peer_c->lst); - - nla_memcpy(&peer_c->data.public_key, - tb[WGPEER_A_PUBLIC_KEY], - sizeof(peer_c->data.public_key)); - - if (tb[WGPEER_A_PRESHARED_KEY]) { - nla_memcpy(&peer_c->data.preshared_key, - tb[WGPEER_A_PRESHARED_KEY], - sizeof(peer_c->data.preshared_key)); - /* FIXME(netlink-bzero-secret) */ - nm_explicit_bzero(nla_data(tb[WGPEER_A_PRESHARED_KEY]), - nla_len(tb[WGPEER_A_PRESHARED_KEY])); - } - - nm_sock_addr_union_cpy_untrusted( - &peer_c->data.endpoint, - tb[WGPEER_A_ENDPOINT] ? nla_data(tb[WGPEER_A_ENDPOINT]) : NULL, - tb[WGPEER_A_ENDPOINT] ? nla_len(tb[WGPEER_A_ENDPOINT]) : 0); - - if (tb[WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL]) - peer_c->data.persistent_keepalive_interval = - nla_get_u16(tb[WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL]); - if (tb[WGPEER_A_LAST_HANDSHAKE_TIME]) { - if (nla_len(tb[WGPEER_A_LAST_HANDSHAKE_TIME]) - >= sizeof(peer_c->data.last_handshake_time)) - nla_memcpy(&peer_c->data.last_handshake_time, - tb[WGPEER_A_LAST_HANDSHAKE_TIME], - sizeof(peer_c->data.last_handshake_time)); - } - if (tb[WGPEER_A_RX_BYTES]) - peer_c->data.rx_bytes = nla_get_u64(tb[WGPEER_A_RX_BYTES]); - if (tb[WGPEER_A_TX_BYTES]) - peer_c->data.tx_bytes = nla_get_u64(tb[WGPEER_A_TX_BYTES]); - } - - if (tb[WGPEER_A_ALLOWEDIPS]) { - struct nlattr *attr; - int rem; - GArray * allowed_ips = *p_allowed_ips; - - nla_for_each_nested (attr, tb[WGPEER_A_ALLOWEDIPS], rem) { - if (!allowed_ips) { - allowed_ips = g_array_new(FALSE, FALSE, sizeof(NMPWireGuardAllowedIP)); - *p_allowed_ips = allowed_ips; - g_array_set_size(allowed_ips, 1); - } else - g_array_set_size(allowed_ips, allowed_ips->len + 1); - - if (!_wireguard_update_from_allowed_ips_nla( - &g_array_index(allowed_ips, NMPWireGuardAllowedIP, allowed_ips->len - 1), - attr)) { - /* we ignore the error of parsing one allowed-ip. */ - g_array_set_size(allowed_ips, allowed_ips->len - 1); - continue; - } - - if (!peer_c->data._construct_idx_end) - peer_c->data._construct_idx_start = allowed_ips->len - 1; - peer_c->data._construct_idx_end = allowed_ips->len; - } - } - - return TRUE; -} - -typedef struct { - const int ifindex; - NMPObject *obj; - CList peers; - GArray * allowed_ips; -} WireGuardParseData; - -static int -_wireguard_get_device_cb(struct nl_msg *msg, void *arg) -{ - static const struct nla_policy policy[] = { - [WGDEVICE_A_IFINDEX] = {.type = NLA_U32}, - [WGDEVICE_A_IFNAME] = {.type = NLA_NUL_STRING, .maxlen = IFNAMSIZ}, - [WGDEVICE_A_PRIVATE_KEY] = {}, - [WGDEVICE_A_PUBLIC_KEY] = {}, - [WGDEVICE_A_FLAGS] = {.type = NLA_U32}, - [WGDEVICE_A_LISTEN_PORT] = {.type = NLA_U16}, - [WGDEVICE_A_FWMARK] = {.type = NLA_U32}, - [WGDEVICE_A_PEERS] = {.type = NLA_NESTED}, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - WireGuardParseData *parse_data = arg; - - if (genlmsg_parse_arr(nlmsg_hdr(msg), 0, tb, policy) < 0) - return NL_SKIP; - - if (tb[WGDEVICE_A_IFINDEX]) { - int ifindex; - - ifindex = (int) nla_get_u32(tb[WGDEVICE_A_IFINDEX]); - if (ifindex <= 0 || parse_data->ifindex != ifindex) - return NL_SKIP; - } else { - if (!parse_data->obj) - return NL_SKIP; - } - - if (parse_data->obj) { - /* we already have an object instance. This means the netlink message - * is a continuation, only providing more WGDEVICE_A_PEERS data below. */ - } else { - NMPObject * obj; - NMPlatformLnkWireGuard *props; - - obj = nmp_object_new(NMP_OBJECT_TYPE_LNK_WIREGUARD, NULL); - props = &obj->lnk_wireguard; - - if (tb[WGDEVICE_A_PRIVATE_KEY]) { - nla_memcpy(props->private_key, tb[WGDEVICE_A_PRIVATE_KEY], sizeof(props->private_key)); - /* FIXME(netlink-bzero-secret): extend netlink library to wipe memory. For now, - * just hack it here (yes, this does not cover all places where the - * private key was copied). */ - nm_explicit_bzero(nla_data(tb[WGDEVICE_A_PRIVATE_KEY]), - nla_len(tb[WGDEVICE_A_PRIVATE_KEY])); - } - if (tb[WGDEVICE_A_PUBLIC_KEY]) - nla_memcpy(props->public_key, tb[WGDEVICE_A_PUBLIC_KEY], sizeof(props->public_key)); - if (tb[WGDEVICE_A_LISTEN_PORT]) - props->listen_port = nla_get_u16(tb[WGDEVICE_A_LISTEN_PORT]); - if (tb[WGDEVICE_A_FWMARK]) - props->fwmark = nla_get_u32(tb[WGDEVICE_A_FWMARK]); - - parse_data->obj = obj; - } - - if (tb[WGDEVICE_A_PEERS]) { - struct nlattr *attr; - int rem; - - nla_for_each_nested (attr, tb[WGDEVICE_A_PEERS], rem) { - if (!_wireguard_update_from_peers_nla(&parse_data->peers, - &parse_data->allowed_ips, - attr)) { - /* we ignore the error of parsing one peer. - * _wireguard_update_from_peers_nla() leaves the @peers array in the - * desired state. */ - } - } - } - - return NL_OK; -} - -static const NMPObject * -_wireguard_read_info(NMPlatform * platform /* used only as logging context */, - struct nl_sock *genl, - int wireguard_family_id, - int ifindex) -{ - nm_auto_nlmsg struct nl_msg *msg = NULL; - NMPObject * obj = NULL; - WireGuardPeerConstruct * peer_c; - WireGuardPeerConstruct * peer_c_safe; - gs_unref_array GArray *allowed_ips = NULL; - WireGuardParseData parse_data = { - .ifindex = ifindex, - }; - guint i; - - nm_assert(genl); - nm_assert(wireguard_family_id >= 0); - nm_assert(ifindex > 0); - - _LOGT("wireguard: fetching information for ifindex %d (genl-id %d)...", - ifindex, - wireguard_family_id); - - msg = nlmsg_alloc(); - - if (!genlmsg_put(msg, - NL_AUTO_PORT, - NL_AUTO_SEQ, - wireguard_family_id, - 0, - NLM_F_DUMP, - WG_CMD_GET_DEVICE, - 1)) - return NULL; - - NLA_PUT_U32(msg, WGDEVICE_A_IFINDEX, (guint32) ifindex); - - if (nl_send_auto(genl, msg) < 0) - return NULL; - - c_list_init(&parse_data.peers); - - /* we ignore errors, and return whatever we could successfully - * parse. */ - nl_recvmsgs(genl, - &((const struct nl_cb){ - .valid_cb = _wireguard_get_device_cb, - .valid_arg = (gpointer) &parse_data, - })); - - /* unpack: transfer ownership */ - obj = parse_data.obj; - allowed_ips = parse_data.allowed_ips; - - if (!obj) { - while ((peer_c = c_list_first_entry(&parse_data.peers, WireGuardPeerConstruct, lst))) { - c_list_unlink_stale(&peer_c->lst); - nm_explicit_bzero(&peer_c->data.preshared_key, sizeof(peer_c->data.preshared_key)); - g_slice_free(WireGuardPeerConstruct, peer_c); - } - return NULL; - } - - /* we receive peers/allowed-ips possibly in separate netlink messages. Hence, while - * parsing the dump, we don't know upfront how many peers/allowed-ips we will receive. - * - * We solve that, by collecting all peers with a CList. It's done this way, - * because a GArray would require growing the array, but we want to bzero() - * the preshared-key of each peer while reallocating. The CList apprach avoids - * that. - * - * For allowed-ips, we instead track one GArray, which are all appended - * there. The realloc/resize of the GArray is fine there. However, - * while we build the GArray, we don't yet have the final pointers. - * Hence, while constructing, we track the indexes with peer->_construct_idx_* - * fields. These indexes must be converted to actual pointers blow. - * - * This is all done during parsing. In the final NMPObjectLnkWireGuard we - * don't want the CList anymore and repackage the NMPObject tightly. The - * reason is, that NMPObject instances are immutable and long-living. Spend - * a bit effort below during construction to obtain a most suitable representation - * in this regard. */ - obj->_lnk_wireguard.peers_len = c_list_length(&parse_data.peers); - obj->_lnk_wireguard.peers = obj->_lnk_wireguard.peers_len > 0 - ? g_new(NMPWireGuardPeer, obj->_lnk_wireguard.peers_len) - : NULL; - - /* duplicate allowed_ips instead of using the pointer. The GArray possibly has more - * space allocated then we need, and we want to get rid of this excess buffer. - * Note that NMPObject instance is possibly put into the cache and long-living. */ - obj->_lnk_wireguard._allowed_ips_buf_len = allowed_ips ? allowed_ips->len : 0u; - obj->_lnk_wireguard._allowed_ips_buf = - obj->_lnk_wireguard._allowed_ips_buf_len > 0 - ? (NMPWireGuardAllowedIP *) nm_memdup(allowed_ips->data, - sizeof(NMPWireGuardAllowedIP) * allowed_ips->len) - : NULL; - - i = 0; - c_list_for_each_entry_safe (peer_c, peer_c_safe, &parse_data.peers, lst) { - NMPWireGuardPeer *peer = (NMPWireGuardPeer *) &obj->_lnk_wireguard.peers[i++]; - - *peer = peer_c->data; - - c_list_unlink_stale(&peer_c->lst); - nm_explicit_bzero(&peer_c->data.preshared_key, sizeof(peer_c->data.preshared_key)); - g_slice_free(WireGuardPeerConstruct, peer_c); - - if (peer->_construct_idx_end != 0) { - guint len; - - nm_assert(obj->_lnk_wireguard._allowed_ips_buf); - nm_assert(peer->_construct_idx_end > peer->_construct_idx_start); - nm_assert(peer->_construct_idx_start < obj->_lnk_wireguard._allowed_ips_buf_len); - nm_assert(peer->_construct_idx_end <= obj->_lnk_wireguard._allowed_ips_buf_len); - - len = peer->_construct_idx_end - peer->_construct_idx_start; - peer->allowed_ips = &obj->_lnk_wireguard._allowed_ips_buf[peer->_construct_idx_start]; - peer->allowed_ips_len = len; - } else { - nm_assert(!peer->_construct_idx_start); - nm_assert(!peer->_construct_idx_end); - peer->allowed_ips = NULL; - peer->allowed_ips_len = 0; - } - } - - return obj; - -nla_put_failure: - g_return_val_if_reached(NULL); -} - -static int -_wireguard_get_family_id(NMPlatform *platform, int ifindex_try) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - int wireguard_family_id = -1; - - if (ifindex_try > 0) { - const NMPlatformLink *plink; - - if (nm_platform_link_get_lnk_wireguard(platform, ifindex_try, &plink)) - wireguard_family_id = NMP_OBJECT_UP_CAST(plink)->_link.wireguard_family_id; - } - if (wireguard_family_id < 0) - wireguard_family_id = genl_ctrl_resolve(priv->genl, "wireguard"); - return wireguard_family_id; -} - -static const NMPObject * -_wireguard_refresh_link(NMPlatform *platform, int wireguard_family_id, int ifindex) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - nm_auto_nmpobj const NMPObject *obj_old = NULL; - nm_auto_nmpobj const NMPObject *obj_new = NULL; - nm_auto_nmpobj const NMPObject *lnk_new = NULL; - NMPCacheOpsType cache_op; - const NMPObject * plink = NULL; - nm_auto_nmpobj NMPObject *obj = NULL; - - nm_assert(wireguard_family_id >= 0); - nm_assert(ifindex > 0); - - nm_platform_process_events(platform); - - plink = nm_platform_link_get_obj(platform, ifindex, TRUE); - - if (!plink || plink->link.type != NM_LINK_TYPE_WIREGUARD) { - nm_platform_link_refresh(platform, ifindex); - plink = nm_platform_link_get_obj(platform, ifindex, TRUE); - if (!plink || plink->link.type != NM_LINK_TYPE_WIREGUARD) - return NULL; - if (NMP_OBJECT_GET_TYPE(plink->_link.netlink.lnk) == NMP_OBJECT_TYPE_LNK_WIREGUARD) - lnk_new = nmp_object_ref(plink->_link.netlink.lnk); - } else { - lnk_new = _wireguard_read_info(platform, priv->genl, wireguard_family_id, ifindex); - if (!lnk_new) { - if (NMP_OBJECT_GET_TYPE(plink->_link.netlink.lnk) == NMP_OBJECT_TYPE_LNK_WIREGUARD) - lnk_new = nmp_object_ref(plink->_link.netlink.lnk); - } else if (nmp_object_equal(plink->_link.netlink.lnk, lnk_new)) { - nmp_object_unref(lnk_new); - lnk_new = nmp_object_ref(plink->_link.netlink.lnk); - } - } - - if (plink->_link.wireguard_family_id == wireguard_family_id - && plink->_link.netlink.lnk == lnk_new) - return plink; - - /* we use nmp_cache_update_netlink() to re-inject the new object into the cache. - * For that, we need to clone it, and tweak it so that it's suitable. It's a bit - * of a hack, in particular that we need to clear driver and udev-device. */ - obj = nmp_object_clone(plink, FALSE); - obj->_link.wireguard_family_id = wireguard_family_id; - nmp_object_unref(obj->_link.netlink.lnk); - obj->_link.netlink.lnk = g_steal_pointer(&lnk_new); - obj->link.driver = NULL; - nm_clear_pointer(&obj->_link.udev.device, udev_device_unref); - - cache_op = - nmp_cache_update_netlink(nm_platform_get_cache(platform), obj, FALSE, &obj_old, &obj_new); - nm_assert(NM_IN_SET(cache_op, NMP_CACHE_OPS_UPDATED)); - if (cache_op != NMP_CACHE_OPS_UNCHANGED) { - cache_on_change(platform, cache_op, obj_old, obj_new); - nm_platform_cache_update_emit_signal(platform, cache_op, obj_old, obj_new); - } - - nm_assert(!obj_new - || (NMP_OBJECT_GET_TYPE(obj_new) == NMP_OBJECT_TYPE_LINK - && obj_new->link.type == NM_LINK_TYPE_WIREGUARD - && (!obj_new->_link.netlink.lnk - || NMP_OBJECT_GET_TYPE(obj_new->_link.netlink.lnk) - == NMP_OBJECT_TYPE_LNK_WIREGUARD))); - return obj_new; -} - -static int -_wireguard_create_change_nlmsgs(NMPlatform * platform, - int ifindex, - int wireguard_family_id, - const NMPlatformLnkWireGuard * lnk_wireguard, - const NMPWireGuardPeer * peers, - const NMPlatformWireGuardChangePeerFlags *peer_flags, - guint peers_len, - NMPlatformWireGuardChangeFlags change_flags, - GPtrArray ** out_msgs) -{ - gs_unref_ptrarray GPtrArray * msgs = NULL; - nm_auto_nlmsg struct nl_msg * msg = NULL; - const guint IDX_NIL = G_MAXUINT; - guint idx_peer_curr; - guint idx_allowed_ips_curr; - struct nlattr * nest_peers; - struct nlattr * nest_curr_peer; - struct nlattr * nest_allowed_ips; - struct nlattr * nest_curr_allowed_ip; - NMPlatformWireGuardChangePeerFlags p_flags = NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_DEFAULT; - -#define _nla_nest_end(msg, nest_start) \ - G_STMT_START \ - { \ - if (nla_nest_end((msg), (nest_start)) < 0) \ - g_return_val_if_reached(-NME_BUG); \ - } \ - G_STMT_END - - /* Adapted from LGPL-2.1+ code [1]. - * - * [1] https://git.zx2c4.com/WireGuard/tree/contrib/examples/embeddable-wg-library/wireguard.c?id=5e99a6d43fe2351adf36c786f5ea2086a8fe7ab8#n1073 */ - - idx_peer_curr = IDX_NIL; - idx_allowed_ips_curr = IDX_NIL; - - /* TODO: for the moment, we always reset all peers and allowed-ips (WGDEVICE_F_REPLACE_PEERS, WGPEER_F_REPLACE_ALLOWEDIPS). - * The platform API should be extended to also support partial updates. In particular, configuring the same configuration - * multiple times, should not clear and re-add all settings, but rather sync the existing settings with the desired configuration. */ - -again: - - msg = nlmsg_alloc(); - if (!genlmsg_put(msg, - NL_AUTO_PORT, - NL_AUTO_SEQ, - wireguard_family_id, - 0, - NLM_F_REQUEST, - WG_CMD_SET_DEVICE, - 1)) - g_return_val_if_reached(-NME_BUG); - - NLA_PUT_U32(msg, WGDEVICE_A_IFINDEX, (guint32) ifindex); - - if (idx_peer_curr == IDX_NIL) { - guint32 flags; - - if (NM_FLAGS_HAS(change_flags, NM_PLATFORM_WIREGUARD_CHANGE_FLAG_HAS_PRIVATE_KEY)) - NLA_PUT(msg, - WGDEVICE_A_PRIVATE_KEY, - sizeof(lnk_wireguard->private_key), - lnk_wireguard->private_key); - if (NM_FLAGS_HAS(change_flags, NM_PLATFORM_WIREGUARD_CHANGE_FLAG_HAS_LISTEN_PORT)) - NLA_PUT_U16(msg, WGDEVICE_A_LISTEN_PORT, lnk_wireguard->listen_port); - if (NM_FLAGS_HAS(change_flags, NM_PLATFORM_WIREGUARD_CHANGE_FLAG_HAS_FWMARK)) - NLA_PUT_U32(msg, WGDEVICE_A_FWMARK, lnk_wireguard->fwmark); - - flags = 0; - if (NM_FLAGS_HAS(change_flags, NM_PLATFORM_WIREGUARD_CHANGE_FLAG_REPLACE_PEERS)) - flags |= WGDEVICE_F_REPLACE_PEERS; - NLA_PUT_U32(msg, WGDEVICE_A_FLAGS, flags); - } - - if (peers_len == 0) - goto send; - - nest_curr_peer = NULL; - nest_allowed_ips = NULL; - nest_curr_allowed_ip = NULL; - - nest_peers = nla_nest_start(msg, WGDEVICE_A_PEERS); - if (!nest_peers) - g_return_val_if_reached(-NME_BUG); - - if (idx_peer_curr == IDX_NIL) - idx_peer_curr = 0; - for (; idx_peer_curr < peers_len; idx_peer_curr++) { - const NMPWireGuardPeer *p = &peers[idx_peer_curr]; - - if (peer_flags) { - p_flags = peer_flags[idx_peer_curr]; - if (!NM_FLAGS_ANY(p_flags, - NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_REMOVE_ME - | NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_HAS_PRESHARED_KEY - | NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_HAS_KEEPALIVE_INTERVAL - | NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_HAS_ENDPOINT - | NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_HAS_ALLOWEDIPS - | NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_REPLACE_ALLOWEDIPS)) { - /* no flags set. We take that as indication to skip configuring the peer - * entirely. */ - nm_assert(p_flags == NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_NONE); - continue; - } - } - - nest_curr_peer = nla_nest_start(msg, 0); - if (!nest_curr_peer) - goto toobig_peers; - - if (nla_put(msg, WGPEER_A_PUBLIC_KEY, NMP_WIREGUARD_PUBLIC_KEY_LEN, p->public_key) < 0) - goto toobig_peers; - - if (NM_FLAGS_HAS(p_flags, NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_REMOVE_ME)) { - /* all other p_flags are silently ignored. */ - if (nla_put_uint32(msg, WGPEER_A_FLAGS, WGPEER_F_REMOVE_ME) < 0) - goto toobig_peers; - } else { - if (idx_allowed_ips_curr == IDX_NIL) { - if (NM_FLAGS_HAS(p_flags, NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_HAS_PRESHARED_KEY) - && nla_put(msg, - WGPEER_A_PRESHARED_KEY, - sizeof(p->preshared_key), - p->preshared_key) - < 0) - goto toobig_peers; - - if (NM_FLAGS_HAS(p_flags, - NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_HAS_KEEPALIVE_INTERVAL) - && nla_put_uint16(msg, - WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL, - p->persistent_keepalive_interval) - < 0) - goto toobig_peers; - - if (NM_FLAGS_HAS(p_flags, NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_REPLACE_ALLOWEDIPS) - && nla_put_uint32(msg, WGPEER_A_FLAGS, WGPEER_F_REPLACE_ALLOWEDIPS) < 0) - goto toobig_peers; - - if (NM_FLAGS_HAS(p_flags, NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_HAS_ENDPOINT)) { - if (NM_IN_SET(p->endpoint.sa.sa_family, AF_INET, AF_INET6)) { - if (nla_put(msg, - WGPEER_A_ENDPOINT, - p->endpoint.sa.sa_family == AF_INET ? sizeof(p->endpoint.in) - : sizeof(p->endpoint.in6), - &p->endpoint) - < 0) - goto toobig_peers; - } else { - /* I think there is no way to clear an endpoint, though there should be. */ - nm_assert(p->endpoint.sa.sa_family == AF_UNSPEC); - } - } - } - - if (NM_FLAGS_HAS(p_flags, NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_HAS_ALLOWEDIPS) - && p->allowed_ips_len > 0) { - if (idx_allowed_ips_curr == IDX_NIL) - idx_allowed_ips_curr = 0; - - nest_allowed_ips = nla_nest_start(msg, WGPEER_A_ALLOWEDIPS); - if (!nest_allowed_ips) - goto toobig_allowedips; - - for (; idx_allowed_ips_curr < p->allowed_ips_len; idx_allowed_ips_curr++) { - const NMPWireGuardAllowedIP *aip = &p->allowed_ips[idx_allowed_ips_curr]; - - nest_curr_allowed_ip = nla_nest_start(msg, 0); - if (!nest_curr_allowed_ip) - goto toobig_allowedips; - - g_return_val_if_fail(NM_IN_SET(aip->family, AF_INET, AF_INET6), -NME_BUG); - - if (nla_put_uint16(msg, WGALLOWEDIP_A_FAMILY, aip->family) < 0) - goto toobig_allowedips; - if (nla_put(msg, - WGALLOWEDIP_A_IPADDR, - nm_utils_addr_family_to_size(aip->family), - &aip->addr) - < 0) - goto toobig_allowedips; - if (nla_put_uint8(msg, WGALLOWEDIP_A_CIDR_MASK, aip->mask) < 0) - goto toobig_allowedips; - - _nla_nest_end(msg, nest_curr_allowed_ip); - nest_curr_allowed_ip = NULL; - } - idx_allowed_ips_curr = IDX_NIL; - - _nla_nest_end(msg, nest_allowed_ips); - nest_allowed_ips = NULL; - } - } - - _nla_nest_end(msg, nest_curr_peer); - nest_curr_peer = NULL; - } - - _nla_nest_end(msg, nest_peers); - goto send; - -toobig_allowedips: - if (nest_curr_allowed_ip) - nla_nest_cancel(msg, nest_curr_allowed_ip); - if (nest_allowed_ips) - _nla_nest_end(msg, nest_allowed_ips); - _nla_nest_end(msg, nest_curr_peer); - _nla_nest_end(msg, nest_peers); - goto send; - -toobig_peers: - if (nest_curr_peer) - nla_nest_cancel(msg, nest_curr_peer); - _nla_nest_end(msg, nest_peers); - goto send; - -send: - if (!msgs) - msgs = g_ptr_array_new_with_free_func((GDestroyNotify) nlmsg_free); - g_ptr_array_add(msgs, g_steal_pointer(&msg)); - - if (idx_peer_curr != IDX_NIL && idx_peer_curr < peers_len) - goto again; - - NM_SET_OUT(out_msgs, g_steal_pointer(&msgs)); - return 0; - -nla_put_failure: - g_return_val_if_reached(-NME_BUG); - -#undef _nla_nest_end -} - -static int -link_wireguard_change(NMPlatform * platform, - int ifindex, - const NMPlatformLnkWireGuard * lnk_wireguard, - const NMPWireGuardPeer * peers, - const NMPlatformWireGuardChangePeerFlags *peer_flags, - guint peers_len, - NMPlatformWireGuardChangeFlags change_flags) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - gs_unref_ptrarray GPtrArray *msgs = NULL; - int wireguard_family_id; - guint i; - int r; - - wireguard_family_id = _wireguard_get_family_id(platform, ifindex); - if (wireguard_family_id < 0) - return -NME_PL_NO_FIRMWARE; - - r = _wireguard_create_change_nlmsgs(platform, - ifindex, - wireguard_family_id, - lnk_wireguard, - peers, - peer_flags, - peers_len, - change_flags, - &msgs); - if (r < 0) { - _LOGW("wireguard: set-device, cannot construct netlink message: %s", nm_strerror(r)); - return r; - } - - for (i = 0; i < msgs->len; i++) { - r = nl_send_auto(priv->genl, msgs->pdata[i]); - if (r < 0) { - _LOGW("wireguard: set-device, send netlink message #%u failed: %s", i, nm_strerror(r)); - return r; - } - - do { - r = nl_recvmsgs(priv->genl, NULL); - } while (r == -EAGAIN); - if (r < 0) { - _LOGW("wireguard: set-device, message #%u was rejected: %s", i, nm_strerror(r)); - return r; - } - - _LOGT("wireguard: set-device, message #%u sent and confirmed", i); - } - - _wireguard_refresh_link(platform, wireguard_family_id, ifindex); - - return 0; -} - -/*****************************************************************************/ - -static void -_nmp_link_address_set(NMPLinkAddress *dst, const struct nlattr *nla) -{ - *dst = (NMPLinkAddress){ - .len = 0, - }; - if (nla) { - int l = nla_len(nla); - - if (l > 0 && l <= NM_UTILS_HWADDR_LEN_MAX) { - G_STATIC_ASSERT_EXPR(sizeof(dst->data) == NM_UTILS_HWADDR_LEN_MAX); - memcpy(dst->data, nla_data(nla), l); - dst->len = l; - } - } -} - -/* Copied and heavily modified from libnl3's link_msg_parser(). */ -static NMPObject * -_new_from_nl_link(NMPlatform * platform, - const NMPCache * cache, - struct nlmsghdr *nlh, - gboolean id_only) -{ - static const struct nla_policy policy[] = { - [IFLA_IFNAME] = {.type = NLA_STRING, .maxlen = IFNAMSIZ}, - [IFLA_MTU] = {.type = NLA_U32}, - [IFLA_TXQLEN] = {.type = NLA_U32}, - [IFLA_LINK] = {.type = NLA_U32}, - [IFLA_WEIGHT] = {.type = NLA_U32}, - [IFLA_MASTER] = {.type = NLA_U32}, - [IFLA_OPERSTATE] = {.type = NLA_U8}, - [IFLA_LINKMODE] = {.type = NLA_U8}, - [IFLA_LINKINFO] = {.type = NLA_NESTED}, - [IFLA_QDISC] = {.type = NLA_STRING, .maxlen = IFQDISCSIZ}, - [IFLA_STATS] = {.minlen = nm_offsetofend(struct rtnl_link_stats, tx_compressed)}, - [IFLA_STATS64] = {.minlen = nm_offsetofend(struct rtnl_link_stats64, tx_compressed)}, - [IFLA_MAP] = {.minlen = nm_offsetofend(struct rtnl_link_ifmap, port)}, - [IFLA_IFALIAS] = {.type = NLA_STRING, .maxlen = IFALIASZ}, - [IFLA_NUM_VF] = {.type = NLA_U32}, - [IFLA_AF_SPEC] = {.type = NLA_NESTED}, - [IFLA_PROMISCUITY] = {.type = NLA_U32}, - [IFLA_NUM_TX_QUEUES] = {.type = NLA_U32}, - [IFLA_NUM_RX_QUEUES] = {.type = NLA_U32}, - [IFLA_GROUP] = {.type = NLA_U32}, - [IFLA_CARRIER] = {.type = NLA_U8}, - [IFLA_PHYS_PORT_ID] = {.type = NLA_UNSPEC}, - [IFLA_NET_NS_PID] = {.type = NLA_U32}, - [IFLA_NET_NS_FD] = {.type = NLA_U32}, - [IFLA_LINK_NETNSID] = {}, - }; - const struct ifinfomsg *ifi; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - struct nlattr * nl_info_data = NULL; - const char * nl_info_kind = NULL; - nm_auto_nmpobj NMPObject *obj = NULL; - gboolean completed_from_cache_val = FALSE; - gboolean * completed_from_cache = cache ? &completed_from_cache_val : NULL; - const NMPObject * link_cached = NULL; - const NMPObject * lnk_data = NULL; - gboolean address_complete_from_cache = TRUE; - gboolean broadcast_complete_from_cache = TRUE; - gboolean lnk_data_complete_from_cache = TRUE; - gboolean need_ext_data = FALSE; - gboolean af_inet6_token_valid = FALSE; - gboolean af_inet6_addr_gen_mode_valid = FALSE; - - if (!nlmsg_valid_hdr(nlh, sizeof(*ifi))) - return NULL; - - ifi = nlmsg_data(nlh); - - if (ifi->ifi_family != AF_UNSPEC) - return NULL; - if (ifi->ifi_index <= 0) - return NULL; - - obj = nmp_object_new_link(ifi->ifi_index); - - if (id_only) - return g_steal_pointer(&obj); - - if (nlmsg_parse_arr(nlh, sizeof(*ifi), tb, policy) < 0) - return NULL; - - if (!tb[IFLA_IFNAME]) - return NULL; - nla_strlcpy(obj->link.name, tb[IFLA_IFNAME], IFNAMSIZ); - if (!obj->link.name[0]) - return NULL; - - if (!tb[IFLA_MTU]) { - /* Kernel has two places that send RTM_GETLINK messages: - * net/core/rtnetlink.c and net/wireless/ext-core.c. - * Unfortunately ext-core.c sets only IFLA_WIRELESS and - * IFLA_IFNAME. This confuses code in this function, because - * it cannot get complete set of data for the interface and - * later incomplete object this function creates is used to - * overwrite existing data in NM's cache. - * Since ext-core.c doesn't set IFLA_MTU we can use it as a - * signal to ignore incoming message. - * To some extent this is a hack and correct approach is to - * merge objects per-field. - */ - return NULL; - } - obj->link.mtu = nla_get_u32(tb[IFLA_MTU]); - - if (tb[IFLA_LINKINFO]) { - static const struct nla_policy policy_link_info[] = { - [IFLA_INFO_KIND] = {.type = NLA_STRING}, - [IFLA_INFO_DATA] = {.type = NLA_NESTED}, - [IFLA_INFO_XSTATS] = {.type = NLA_NESTED}, - }; - struct nlattr *li[G_N_ELEMENTS(policy_link_info)]; - - if (nla_parse_nested_arr(li, tb[IFLA_LINKINFO], policy_link_info) < 0) - return NULL; - - if (li[IFLA_INFO_KIND]) - nl_info_kind = nla_get_string(li[IFLA_INFO_KIND]); - - nl_info_data = li[IFLA_INFO_DATA]; - } - - if (tb[IFLA_STATS64]) { - const char *stats = nla_data(tb[IFLA_STATS64]); - - obj->link.rx_packets = - unaligned_read_ne64(&stats[G_STRUCT_OFFSET(struct rtnl_link_stats64, rx_packets)]); - obj->link.rx_bytes = - unaligned_read_ne64(&stats[G_STRUCT_OFFSET(struct rtnl_link_stats64, rx_bytes)]); - obj->link.tx_packets = - unaligned_read_ne64(&stats[G_STRUCT_OFFSET(struct rtnl_link_stats64, tx_packets)]); - obj->link.tx_bytes = - unaligned_read_ne64(&stats[G_STRUCT_OFFSET(struct rtnl_link_stats64, tx_bytes)]); - } - - obj->link.n_ifi_flags = ifi->ifi_flags; - obj->link.connected = NM_FLAGS_HAS(obj->link.n_ifi_flags, IFF_LOWER_UP); - obj->link.arptype = ifi->ifi_type; - - obj->link.type = _linktype_get_type(platform, - cache, - nl_info_kind, - obj->link.ifindex, - obj->link.name, - obj->link.n_ifi_flags, - obj->link.arptype, - completed_from_cache, - &link_cached, - &obj->link.kind); - - if (tb[IFLA_MASTER]) - obj->link.master = nla_get_u32(tb[IFLA_MASTER]); - - if (tb[IFLA_LINK]) { - if (!tb[IFLA_LINK_NETNSID]) - obj->link.parent = nla_get_u32(tb[IFLA_LINK]); - else - obj->link.parent = NM_PLATFORM_LINK_OTHER_NETNS; - } - - if (tb[IFLA_ADDRESS]) { - _nmp_link_address_set(&obj->link.l_address, tb[IFLA_ADDRESS]); - address_complete_from_cache = FALSE; - } - - if (tb[IFLA_BROADCAST]) { - _nmp_link_address_set(&obj->link.l_broadcast, tb[IFLA_BROADCAST]); - broadcast_complete_from_cache = FALSE; - } - - if (tb[IFLA_AF_SPEC]) { - struct nlattr *af_attr; - int remaining; - - nla_for_each_nested (af_attr, tb[IFLA_AF_SPEC], remaining) { - switch (nla_type(af_attr)) { - case AF_INET6: - _parse_af_inet6(platform, - af_attr, - &obj->link.inet6_token, - &af_inet6_token_valid, - &obj->link.inet6_addr_gen_mode_inv, - &af_inet6_addr_gen_mode_valid); - break; - } - } - } - - switch (obj->link.type) { - case NM_LINK_TYPE_BRIDGE: - lnk_data = _parse_lnk_bridge(nl_info_kind, nl_info_data); - break; - case NM_LINK_TYPE_GRE: - case NM_LINK_TYPE_GRETAP: - lnk_data = _parse_lnk_gre(nl_info_kind, nl_info_data); - break; - case NM_LINK_TYPE_INFINIBAND: - lnk_data = _parse_lnk_infiniband(nl_info_kind, nl_info_data); - break; - case NM_LINK_TYPE_IP6TNL: - lnk_data = _parse_lnk_ip6tnl(nl_info_kind, nl_info_data); - break; - case NM_LINK_TYPE_IP6GRE: - case NM_LINK_TYPE_IP6GRETAP: - lnk_data = _parse_lnk_ip6gre(nl_info_kind, nl_info_data); - break; - case NM_LINK_TYPE_IPIP: - lnk_data = _parse_lnk_ipip(nl_info_kind, nl_info_data); - break; - case NM_LINK_TYPE_MACSEC: - lnk_data = _parse_lnk_macsec(nl_info_kind, nl_info_data); - break; - case NM_LINK_TYPE_MACVLAN: - case NM_LINK_TYPE_MACVTAP: - lnk_data = _parse_lnk_macvlan(nl_info_kind, nl_info_data); - break; - case NM_LINK_TYPE_SIT: - lnk_data = _parse_lnk_sit(nl_info_kind, nl_info_data); - break; - case NM_LINK_TYPE_TUN: - lnk_data = _parse_lnk_tun(nl_info_kind, nl_info_data); - break; - case NM_LINK_TYPE_VLAN: - lnk_data = _parse_lnk_vlan(nl_info_kind, nl_info_data); - break; - case NM_LINK_TYPE_VRF: - lnk_data = _parse_lnk_vrf(nl_info_kind, nl_info_data); - break; - case NM_LINK_TYPE_VXLAN: - lnk_data = _parse_lnk_vxlan(nl_info_kind, nl_info_data); - break; - case NM_LINK_TYPE_WIFI: - case NM_LINK_TYPE_OLPC_MESH: - case NM_LINK_TYPE_WPAN: - need_ext_data = TRUE; - lnk_data_complete_from_cache = FALSE; - break; - case NM_LINK_TYPE_WIREGUARD: - lnk_data_complete_from_cache = TRUE; - break; - default: - lnk_data_complete_from_cache = FALSE; - break; - } - - if (completed_from_cache - && (lnk_data_complete_from_cache || need_ext_data || address_complete_from_cache - || broadcast_complete_from_cache || !af_inet6_token_valid - || !af_inet6_addr_gen_mode_valid || !tb[IFLA_STATS64])) { - _lookup_cached_link(cache, obj->link.ifindex, completed_from_cache, &link_cached); - if (link_cached && link_cached->_link.netlink.is_in_netlink) { - if (lnk_data_complete_from_cache && link_cached->link.type == obj->link.type - && link_cached->_link.netlink.lnk - && (!lnk_data || nmp_object_equal(lnk_data, link_cached->_link.netlink.lnk))) { - /* We always try to look into the cache and reuse the object there. - * We do that, because we consider the lnk object as immutable and don't - * modify it after creating. Hence we can share it and reuse. - * - * Also, sometimes the info-data is missing for updates. In this case - * we want to keep the previously received lnk_data. */ - nmp_object_unref(lnk_data); - lnk_data = nmp_object_ref(link_cached->_link.netlink.lnk); - } - - if (need_ext_data && link_cached->link.type == obj->link.type - && link_cached->_link.ext_data) { - /* Prefer reuse of existing ext_data object */ - obj->_link.ext_data = g_object_ref(link_cached->_link.ext_data); - } - - if (address_complete_from_cache) - obj->link.l_address = link_cached->link.l_address; - if (broadcast_complete_from_cache) - obj->link.l_broadcast = link_cached->link.l_broadcast; - if (!af_inet6_token_valid) - obj->link.inet6_token = link_cached->link.inet6_token; - if (!af_inet6_addr_gen_mode_valid) - obj->link.inet6_addr_gen_mode_inv = link_cached->link.inet6_addr_gen_mode_inv; - if (!tb[IFLA_STATS64]) { - obj->link.rx_packets = link_cached->link.rx_packets; - obj->link.rx_bytes = link_cached->link.rx_bytes; - obj->link.tx_packets = link_cached->link.tx_packets; - obj->link.tx_bytes = link_cached->link.tx_bytes; - } - } - } - - obj->_link.netlink.lnk = lnk_data; - - if (need_ext_data && obj->_link.ext_data == NULL) { - switch (obj->link.type) { - case NM_LINK_TYPE_WIFI: - case NM_LINK_TYPE_OLPC_MESH: - obj->_link.ext_data = - (GObject *) nm_wifi_utils_new(ifi->ifi_index, - _genl_sock(NM_LINUX_PLATFORM(platform)), - TRUE); - break; - case NM_LINK_TYPE_WPAN: - obj->_link.ext_data = - (GObject *) nm_wpan_utils_new(ifi->ifi_index, - _genl_sock(NM_LINUX_PLATFORM(platform)), - TRUE); - break; - default: - g_assert_not_reached(); - } - } - - if (obj->link.type == NM_LINK_TYPE_WIREGUARD) { - const NMPObject *lnk_data_new = NULL; - struct nl_sock * genl = NM_LINUX_PLATFORM_GET_PRIVATE(platform)->genl; - - /* The WireGuard kernel module does not yet send link update - * notifications, so we don't actually update the cache. For - * now, always refetch link data here. */ - - _lookup_cached_link(cache, obj->link.ifindex, completed_from_cache, &link_cached); - if (link_cached && link_cached->_link.netlink.is_in_netlink - && link_cached->link.type == NM_LINK_TYPE_WIREGUARD) - obj->_link.wireguard_family_id = link_cached->_link.wireguard_family_id; - else - obj->_link.wireguard_family_id = -1; - - if (obj->_link.wireguard_family_id < 0) - obj->_link.wireguard_family_id = genl_ctrl_resolve(genl, "wireguard"); - - if (obj->_link.wireguard_family_id >= 0) { - lnk_data_new = _wireguard_read_info(platform, - genl, - obj->_link.wireguard_family_id, - obj->link.ifindex); - } - - if (lnk_data_new && obj->_link.netlink.lnk - && nmp_object_equal(obj->_link.netlink.lnk, lnk_data_new)) - nmp_object_unref(lnk_data_new); - else { - nmp_object_unref(obj->_link.netlink.lnk); - obj->_link.netlink.lnk = lnk_data_new; - } - } - - obj->_link.netlink.is_in_netlink = TRUE; - return g_steal_pointer(&obj); -} - -/* Copied and heavily modified from libnl3's addr_msg_parser(). */ -static NMPObject * -_new_from_nl_addr(struct nlmsghdr *nlh, gboolean id_only) -{ - static const struct nla_policy policy[] = { - [IFA_LABEL] = {.type = NLA_STRING, .maxlen = IFNAMSIZ}, - [IFA_CACHEINFO] = {.minlen = nm_offsetofend(struct ifa_cacheinfo, tstamp)}, - [IFA_FLAGS] = {}, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - const struct ifaddrmsg *ifa; - gboolean is_v4; - nm_auto_nmpobj NMPObject *obj = NULL; - int addr_len; - guint32 lifetime, preferred, timestamp; - - if (!nlmsg_valid_hdr(nlh, sizeof(*ifa))) - return NULL; - - ifa = nlmsg_data(nlh); - - if (!NM_IN_SET(ifa->ifa_family, AF_INET, AF_INET6)) - return NULL; - - is_v4 = ifa->ifa_family == AF_INET; - - if (nlmsg_parse_arr(nlh, sizeof(*ifa), tb, policy) < 0) - return NULL; - - addr_len = is_v4 ? sizeof(in_addr_t) : sizeof(struct in6_addr); - - if (ifa->ifa_prefixlen > (is_v4 ? 32 : 128)) - return NULL; - - /*****************************************************************/ - - obj = nmp_object_new(is_v4 ? NMP_OBJECT_TYPE_IP4_ADDRESS : NMP_OBJECT_TYPE_IP6_ADDRESS, NULL); - - obj->ip_address.ifindex = ifa->ifa_index; - obj->ip_address.plen = ifa->ifa_prefixlen; - - _check_addr_or_return_null(tb, IFA_ADDRESS, addr_len); - _check_addr_or_return_null(tb, IFA_LOCAL, addr_len); - if (is_v4) { - /* For IPv4, kernel omits IFA_LOCAL/IFA_ADDRESS if (and only if) they - * are effectively 0.0.0.0 (all-zero). */ - if (tb[IFA_LOCAL]) - memcpy(&obj->ip4_address.address, nla_data(tb[IFA_LOCAL]), addr_len); - if (tb[IFA_ADDRESS]) - memcpy(&obj->ip4_address.peer_address, nla_data(tb[IFA_ADDRESS]), addr_len); - - _check_addr_or_return_null(tb, IFA_BROADCAST, addr_len); - obj->ip4_address.broadcast_address = - tb[IFA_BROADCAST] ? nla_get_u32(tb[IFA_BROADCAST]) : 0u; - obj->ip4_address.use_ip4_broadcast_address = TRUE; - } else { - /* For IPv6, IFA_ADDRESS is always present. - * - * If IFA_LOCAL is missing, IFA_ADDRESS is @address and @peer_address - * is :: (all-zero). - * - * If unexpectedly IFA_ADDRESS is missing, make the best of it -- but it _should_ - * actually be there. */ - if (tb[IFA_ADDRESS] || tb[IFA_LOCAL]) { - if (tb[IFA_LOCAL]) { - memcpy(&obj->ip6_address.address, nla_data(tb[IFA_LOCAL]), addr_len); - if (tb[IFA_ADDRESS]) - memcpy(&obj->ip6_address.peer_address, nla_data(tb[IFA_ADDRESS]), addr_len); - else - obj->ip6_address.peer_address = obj->ip6_address.address; - } else - memcpy(&obj->ip6_address.address, nla_data(tb[IFA_ADDRESS]), addr_len); - } - } - - obj->ip_address.addr_source = NM_IP_CONFIG_SOURCE_KERNEL; - - obj->ip_address.n_ifa_flags = tb[IFA_FLAGS] ? nla_get_u32(tb[IFA_FLAGS]) : ifa->ifa_flags; - - if (is_v4) { - if (tb[IFA_LABEL]) { - char label[IFNAMSIZ]; - - nla_strlcpy(label, tb[IFA_LABEL], IFNAMSIZ); - - /* Check for ':'; we're only interested in labels used as interface aliases */ - if (strchr(label, ':')) - g_strlcpy(obj->ip4_address.label, label, sizeof(obj->ip4_address.label)); - } - } - - lifetime = NM_PLATFORM_LIFETIME_PERMANENT; - preferred = NM_PLATFORM_LIFETIME_PERMANENT; - timestamp = 0; - /* IPv6 only */ - if (tb[IFA_CACHEINFO]) { - const struct ifa_cacheinfo *ca; - - ca = nla_data_as(struct ifa_cacheinfo, tb[IFA_CACHEINFO]); - lifetime = ca->ifa_valid; - preferred = ca->ifa_prefered; - timestamp = ca->tstamp; - } - _addrtime_get_lifetimes(timestamp, - lifetime, - preferred, - &obj->ip_address.timestamp, - &obj->ip_address.lifetime, - &obj->ip_address.preferred); - - return g_steal_pointer(&obj); -} - -/* Copied and heavily modified from libnl3's rtnl_route_parse() and parse_multipath(). */ -static NMPObject * -_new_from_nl_route(struct nlmsghdr *nlh, gboolean id_only) -{ - static const struct nla_policy policy[] = { - [RTA_TABLE] = {.type = NLA_U32}, - [RTA_IIF] = {.type = NLA_U32}, - [RTA_OIF] = {.type = NLA_U32}, - [RTA_PRIORITY] = {.type = NLA_U32}, - [RTA_PREF] = {.type = NLA_U8}, - [RTA_FLOW] = {.type = NLA_U32}, - [RTA_CACHEINFO] = {.minlen = nm_offsetofend(struct rta_cacheinfo, rta_tsage)}, - [RTA_METRICS] = {.type = NLA_NESTED}, - [RTA_MULTIPATH] = {.type = NLA_NESTED}, - }; - const struct rtmsg *rtm; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - gboolean is_v4; - nm_auto_nmpobj NMPObject *obj = NULL; - int addr_len; - struct { - gboolean is_present; - int ifindex; - NMIPAddr gateway; - } nh = { - .is_present = FALSE, - }; - guint32 mss; - guint32 window = 0; - guint32 cwnd = 0; - guint32 initcwnd = 0; - guint32 initrwnd = 0; - guint32 mtu = 0; - guint32 lock = 0; - - if (!nlmsg_valid_hdr(nlh, sizeof(*rtm))) - return NULL; - - rtm = nlmsg_data(nlh); - - /***************************************************************** - * only handle ~supported~ routes. - *****************************************************************/ - - if (!NM_IN_SET(rtm->rtm_family, AF_INET, AF_INET6)) - return NULL; - - if (!NM_IN_SET(rtm->rtm_type, RTN_UNICAST, RTN_LOCAL)) - return NULL; - - if (nlmsg_parse_arr(nlh, sizeof(struct rtmsg), tb, policy) < 0) - return NULL; - - /*****************************************************************/ - - is_v4 = rtm->rtm_family == AF_INET; - addr_len = is_v4 ? sizeof(in_addr_t) : sizeof(struct in6_addr); - - if (rtm->rtm_dst_len > (is_v4 ? 32 : 128)) - return NULL; - - /***************************************************************** - * parse nexthops. Only handle routes with one nh. - *****************************************************************/ - - if (tb[RTA_MULTIPATH]) { - size_t tlen = nla_len(tb[RTA_MULTIPATH]); - struct rtnexthop *rtnh; - - if (tlen < sizeof(*rtnh)) - goto rta_multipath_done; - - rtnh = nla_data_as(struct rtnexthop, tb[RTA_MULTIPATH]); - - if (tlen < rtnh->rtnh_len) - goto rta_multipath_done; - - while (TRUE) { - if (nh.is_present) { - /* we don't support multipath routes. */ - return NULL; - } - - nh.is_present = TRUE; - nh.ifindex = rtnh->rtnh_ifindex; - - if (rtnh->rtnh_len > sizeof(*rtnh)) { - struct nlattr *ntb[G_N_ELEMENTS(policy)]; - - if (nla_parse_arr(ntb, - (struct nlattr *) RTNH_DATA(rtnh), - rtnh->rtnh_len - sizeof(*rtnh), - policy) - < 0) - return NULL; - - if (_check_addr_or_return_null(ntb, RTA_GATEWAY, addr_len)) - memcpy(&nh.gateway, nla_data(ntb[RTA_GATEWAY]), addr_len); - } - - if (tlen < RTNH_ALIGN(rtnh->rtnh_len) + sizeof(*rtnh)) - goto rta_multipath_done; - - tlen -= RTNH_ALIGN(rtnh->rtnh_len); - rtnh = RTNH_NEXT(rtnh); - } -rta_multipath_done:; - } - - if (tb[RTA_OIF] || tb[RTA_GATEWAY] || tb[RTA_FLOW]) { - int ifindex = 0; - NMIPAddr gateway = {}; - - if (tb[RTA_OIF]) - ifindex = nla_get_u32(tb[RTA_OIF]); - if (_check_addr_or_return_null(tb, RTA_GATEWAY, addr_len)) - memcpy(&gateway, nla_data(tb[RTA_GATEWAY]), addr_len); - - if (!nh.is_present) { - /* If no nexthops have been provided via RTA_MULTIPATH - * we add it as regular nexthop to maintain backwards - * compatibility */ - nh.ifindex = ifindex; - nh.gateway = gateway; - } else { - /* Kernel supports new style nexthop configuration, - * verify that it is a duplicate and ignore old-style nexthop. */ - if (nh.ifindex != ifindex || memcmp(&nh.gateway, &gateway, addr_len) != 0) - return NULL; - } - } else if (!nh.is_present) - return NULL; - - /*****************************************************************/ - - mss = 0; - if (tb[RTA_METRICS]) { - static const struct nla_policy rtax_policy[] = { - [RTAX_LOCK] = {.type = NLA_U32}, - [RTAX_ADVMSS] = {.type = NLA_U32}, - [RTAX_WINDOW] = {.type = NLA_U32}, - [RTAX_CWND] = {.type = NLA_U32}, - [RTAX_INITCWND] = {.type = NLA_U32}, - [RTAX_INITRWND] = {.type = NLA_U32}, - [RTAX_MTU] = {.type = NLA_U32}, - }; - struct nlattr *mtb[G_N_ELEMENTS(rtax_policy)]; - - if (nla_parse_nested_arr(mtb, tb[RTA_METRICS], rtax_policy) < 0) - return NULL; - - if (mtb[RTAX_LOCK]) - lock = nla_get_u32(mtb[RTAX_LOCK]); - if (mtb[RTAX_ADVMSS]) - mss = nla_get_u32(mtb[RTAX_ADVMSS]); - if (mtb[RTAX_WINDOW]) - window = nla_get_u32(mtb[RTAX_WINDOW]); - if (mtb[RTAX_CWND]) - cwnd = nla_get_u32(mtb[RTAX_CWND]); - if (mtb[RTAX_INITCWND]) - initcwnd = nla_get_u32(mtb[RTAX_INITCWND]); - if (mtb[RTAX_INITRWND]) - initrwnd = nla_get_u32(mtb[RTAX_INITRWND]); - if (mtb[RTAX_MTU]) - mtu = nla_get_u32(mtb[RTAX_MTU]); - } - - /*****************************************************************/ - - obj = nmp_object_new(is_v4 ? NMP_OBJECT_TYPE_IP4_ROUTE : NMP_OBJECT_TYPE_IP6_ROUTE, NULL); - - obj->ip_route.type_coerced = nm_platform_route_type_coerce(rtm->rtm_type); - obj->ip_route.table_coerced = nm_platform_route_table_coerce( - tb[RTA_TABLE] ? nla_get_u32(tb[RTA_TABLE]) : (guint32) rtm->rtm_table); - - obj->ip_route.ifindex = nh.ifindex; - - if (_check_addr_or_return_null(tb, RTA_DST, addr_len)) - memcpy(obj->ip_route.network_ptr, nla_data(tb[RTA_DST]), addr_len); - - obj->ip_route.plen = rtm->rtm_dst_len; - - if (tb[RTA_PRIORITY]) - obj->ip_route.metric = nla_get_u32(tb[RTA_PRIORITY]); - - if (is_v4) - obj->ip4_route.gateway = nh.gateway.addr4; - else - obj->ip6_route.gateway = nh.gateway.addr6; - - if (is_v4) - obj->ip4_route.scope_inv = nm_platform_route_scope_inv(rtm->rtm_scope); - - if (_check_addr_or_return_null(tb, RTA_PREFSRC, addr_len)) { - if (is_v4) - memcpy(&obj->ip4_route.pref_src, nla_data(tb[RTA_PREFSRC]), addr_len); - else - memcpy(&obj->ip6_route.pref_src, nla_data(tb[RTA_PREFSRC]), addr_len); - } - - if (is_v4) - obj->ip4_route.tos = rtm->rtm_tos; - else { - if (tb[RTA_SRC]) { - _check_addr_or_return_null(tb, RTA_SRC, addr_len); - memcpy(&obj->ip6_route.src, nla_data(tb[RTA_SRC]), addr_len); - } - obj->ip6_route.src_plen = rtm->rtm_src_len; - } - - obj->ip_route.mss = mss; - obj->ip_route.window = window; - obj->ip_route.cwnd = cwnd; - obj->ip_route.initcwnd = initcwnd; - obj->ip_route.initrwnd = initrwnd; - obj->ip_route.mtu = mtu; - obj->ip_route.lock_window = NM_FLAGS_HAS(lock, 1 << RTAX_WINDOW); - obj->ip_route.lock_cwnd = NM_FLAGS_HAS(lock, 1 << RTAX_CWND); - obj->ip_route.lock_initcwnd = NM_FLAGS_HAS(lock, 1 << RTAX_INITCWND); - obj->ip_route.lock_initrwnd = NM_FLAGS_HAS(lock, 1 << RTAX_INITRWND); - obj->ip_route.lock_mtu = NM_FLAGS_HAS(lock, 1 << RTAX_MTU); - - if (!is_v4) { - if (!_nm_platform_kernel_support_detected(NM_PLATFORM_KERNEL_SUPPORT_TYPE_RTA_PREF)) { - /* Detect support for RTA_PREF by inspecting the netlink message. - * RTA_PREF was added in kernel 4.1, dated 21 June, 2015. */ - _nm_platform_kernel_support_init(NM_PLATFORM_KERNEL_SUPPORT_TYPE_RTA_PREF, - tb[RTA_PREF] ? 1 : -1); - } - - if (tb[RTA_PREF]) - obj->ip6_route.rt_pref = nla_get_u8(tb[RTA_PREF]); - } - - obj->ip_route.r_rtm_flags = rtm->rtm_flags; - obj->ip_route.rt_source = nmp_utils_ip_config_source_from_rtprot(rtm->rtm_protocol); - - return g_steal_pointer(&obj); -} - -static NMPObject * -_new_from_nl_routing_rule(struct nlmsghdr *nlh, gboolean id_only) -{ - static const struct nla_policy policy[] = { - [FRA_UNSPEC] = {}, - [FRA_DST] = {/* struct in_addr, struct in6_addr */}, - [FRA_SRC] = {/* struct in_addr, struct in6_addr */}, - [FRA_IIFNAME] = - { - .type = NLA_STRING, - .maxlen = IFNAMSIZ, - }, - [FRA_GOTO] = - { - .type = NLA_U32, - }, - [FRA_UNUSED2] = {}, - [FRA_PRIORITY] = - { - .type = NLA_U32, - }, - [FRA_UNUSED3] = {}, - [FRA_UNUSED4] = {}, - [FRA_UNUSED5] = {}, - [FRA_FWMARK] = - { - .type = NLA_U32, - }, - [FRA_FLOW] = - { - .type = NLA_U32, - }, - [FRA_TUN_ID] = - { - .type = NLA_U64, - }, - [FRA_SUPPRESS_IFGROUP] = - { - .type = NLA_U32, - }, - [FRA_SUPPRESS_PREFIXLEN] = - { - .type = NLA_U32, - }, - [FRA_TABLE] = - { - .type = NLA_U32, - }, - [FRA_FWMASK] = - { - .type = NLA_U32, - }, - [FRA_OIFNAME] = - { - .type = NLA_STRING, - .maxlen = IFNAMSIZ, - }, - [FRA_PAD] = - { - .type = NLA_U32, - }, - [FRA_L3MDEV] = - { - .type = NLA_U8, - }, - [FRA_UID_RANGE] = - { - .minlen = sizeof(NMFibRuleUidRange), - .maxlen = sizeof(NMFibRuleUidRange), - }, - [FRA_PROTOCOL] = - { - .type = NLA_U8, - }, - [FRA_IP_PROTO] = - { - .type = NLA_U8, - }, - [FRA_SPORT_RANGE] = - { - .minlen = sizeof(NMFibRulePortRange), - .maxlen = sizeof(NMFibRulePortRange), - }, - [FRA_DPORT_RANGE] = - { - .minlen = sizeof(NMFibRulePortRange), - .maxlen = sizeof(NMFibRulePortRange), - }, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - const struct fib_rule_hdr *frh; - NMPlatformRoutingRule * props; - nm_auto_nmpobj NMPObject *obj = NULL; - int addr_family; - guint8 addr_size; - - if (nlmsg_parse_arr(nlh, sizeof(*frh), tb, policy) < 0) - return NULL; - - frh = nlmsg_data(nlh); - - addr_family = frh->family; - - if (!NM_IN_SET(addr_family, AF_INET, AF_INET6)) { - /* we don't care about other address families. */ - return NULL; - } - - addr_size = nm_utils_addr_family_to_size(addr_family); - - obj = nmp_object_new(NMP_OBJECT_TYPE_ROUTING_RULE, NULL); - props = &obj->routing_rule; - - props->addr_family = addr_family; - props->action = frh->action; - props->flags = frh->flags; - props->tos = frh->tos; - - props->table = tb[FRA_TABLE] ? nla_get_u32(tb[FRA_TABLE]) : frh->table; - - if (tb[FRA_SUPPRESS_PREFIXLEN]) - props->suppress_prefixlen_inverse = ~nla_get_u32(tb[FRA_SUPPRESS_PREFIXLEN]); - - if (tb[FRA_SUPPRESS_IFGROUP]) - props->suppress_ifgroup_inverse = ~nla_get_u32(tb[FRA_SUPPRESS_IFGROUP]); - - if (tb[FRA_IIFNAME]) - nla_strlcpy(props->iifname, tb[FRA_IIFNAME], sizeof(props->iifname)); - - if (tb[FRA_OIFNAME]) - nla_strlcpy(props->oifname, tb[FRA_OIFNAME], sizeof(props->oifname)); - - if (tb[FRA_PRIORITY]) - props->priority = nla_get_u32(tb[FRA_PRIORITY]); - - if (tb[FRA_FWMARK]) - props->fwmark = nla_get_u32(tb[FRA_FWMARK]); - - if (tb[FRA_FWMASK]) - props->fwmask = nla_get_u32(tb[FRA_FWMASK]); - - if (tb[FRA_GOTO]) - props->goto_target = nla_get_u32(tb[FRA_GOTO]); - - props->src_len = frh->src_len; - if (props->src_len > addr_size * 8) - return NULL; - if (!tb[FRA_SRC]) { - if (props->src_len > 0) - return NULL; - } else if (!nm_ip_addr_set_from_untrusted(addr_family, - &props->src, - nla_data(tb[FRA_SRC]), - nla_len(tb[FRA_SRC]), - NULL)) - return NULL; - - props->dst_len = frh->dst_len; - if (props->dst_len > addr_size * 8) - return NULL; - if (!tb[FRA_DST]) { - if (props->dst_len > 0) - return NULL; - } else if (!nm_ip_addr_set_from_untrusted(addr_family, - &props->dst, - nla_data(tb[FRA_DST]), - nla_len(tb[FRA_DST]), - NULL)) - return NULL; - - if (tb[FRA_FLOW]) - props->flow = nla_get_u32(tb[FRA_FLOW]); - - if (tb[FRA_TUN_ID]) - props->tun_id = nla_get_be64(tb[FRA_TUN_ID]); - - if (tb[FRA_L3MDEV]) { - if (!_nm_platform_kernel_support_detected(NM_PLATFORM_KERNEL_SUPPORT_TYPE_FRA_L3MDEV)) { - /* support for FRA_L3MDEV was added in 96c63fa7393d0a346acfe5a91e0c7d4c7782641b, - * kernel 4.8, 3 October 2017. - * - * We can only detect support if the attribute is present. A missing attribute - * is not conclusive. */ - _nm_platform_kernel_support_init(NM_PLATFORM_KERNEL_SUPPORT_TYPE_FRA_L3MDEV, 1); - } - - /* actually, kernel only allows this attribute to be missing or - * "1". Still, encode it as full uint8. - * - * Note that FRA_L3MDEV and FRA_TABLE are mutally exclusive. */ - props->l3mdev = nla_get_u8(tb[FRA_L3MDEV]); - } - - if (tb[FRA_PROTOCOL]) - props->protocol = nla_get_u8(tb[FRA_PROTOCOL]); - else - nm_assert(props->protocol == RTPROT_UNSPEC); - - if (!_nm_platform_kernel_support_detected(NM_PLATFORM_KERNEL_SUPPORT_TYPE_FRA_PROTOCOL)) { - /* FRA_PROTOCOL was added in kernel 4.17, dated 3 June, 2018. - * See commit 1b71af6053af1bd2f849e9fda4f71c1e3f145dcf. */ - _nm_platform_kernel_support_init(NM_PLATFORM_KERNEL_SUPPORT_TYPE_FRA_PROTOCOL, - tb[FRA_PROTOCOL] ? 1 : -1); - } - - if (tb[FRA_IP_PROTO]) - props->ip_proto = nla_get_u8(tb[FRA_IP_PROTO]); - - G_STATIC_ASSERT_EXPR(sizeof(NMFibRulePortRange) == 4); - G_STATIC_ASSERT_EXPR(G_STRUCT_OFFSET(NMFibRulePortRange, start) == 0); - G_STATIC_ASSERT_EXPR(G_STRUCT_OFFSET(NMFibRulePortRange, end) == 2); - - nla_memcpy_checked_size(&props->sport_range, tb[FRA_SPORT_RANGE], sizeof(props->sport_range)); - nla_memcpy_checked_size(&props->dport_range, tb[FRA_DPORT_RANGE], sizeof(props->dport_range)); - - if (!_nm_platform_kernel_support_detected(NM_PLATFORM_KERNEL_SUPPORT_TYPE_FRA_IP_PROTO)) { - /* support for FRA_IP_PROTO, FRA_SPORT_RANGE, and FRA_DPORT_RANGE was added together - * by bfff4862653bb96001ab57c1edd6d03f48e5f035, kernel 4.17, 4 June 2018. - * - * Unfortunately, a missing attribute does not tell us anything about support. - * We can only tell for sure when we have support, but not when we don't have. */ - if (tb[FRA_IP_PROTO] || tb[FRA_SPORT_RANGE] || tb[FRA_DPORT_RANGE]) - _nm_platform_kernel_support_init(NM_PLATFORM_KERNEL_SUPPORT_TYPE_FRA_IP_PROTO, 1); - } - - G_STATIC_ASSERT_EXPR(sizeof(NMFibRuleUidRange) == 8); - G_STATIC_ASSERT_EXPR(G_STRUCT_OFFSET(NMFibRuleUidRange, start) == 0); - G_STATIC_ASSERT_EXPR(G_STRUCT_OFFSET(NMFibRuleUidRange, end) == 4); - - if (tb[FRA_UID_RANGE]) { - if (!_nm_platform_kernel_support_detected(NM_PLATFORM_KERNEL_SUPPORT_TYPE_FRA_UID_RANGE)) { - /* support for FRA_UID_RANGE was added in 622ec2c9d52405973c9f1ca5116eb1c393adfc7d, - * kernel 4.10, 19 February 2017. - * - * We can only detect support if the attribute is present. A missing attribute - * is not conclusive. */ - _nm_platform_kernel_support_init(NM_PLATFORM_KERNEL_SUPPORT_TYPE_FRA_UID_RANGE, 1); - } - - nla_memcpy_checked_size(&props->uid_range, tb[FRA_UID_RANGE], sizeof(props->uid_range)); - props->uid_range_has = TRUE; - } - - return g_steal_pointer(&obj); -} - -static guint32 -psched_tick_to_time(NMPlatform *platform, guint32 tick) -{ - static gboolean initialized; - static double tick_in_usec = 1; - - if (!initialized) { - gs_free char *params = NULL; - double clock_factor = 1; - guint32 clock_res; - guint32 t2us; - guint32 us2t; - - initialized = TRUE; - params = nm_platform_sysctl_get(platform, NMP_SYSCTL_PATHID_ABSOLUTE("/proc/net/psched")); - if (!params || sscanf(params, "%08x%08x%08x", &t2us, &us2t, &clock_res) != 3) { - _LOGW("packet scheduler parameters not available"); - } else { - /* See tc_core_init() in iproute2 */ - if (clock_res == 1000000000) - t2us = us2t; - - clock_factor = (double) clock_res / PSCHED_TIME_UNITS_PER_SEC; - tick_in_usec = (double) t2us / us2t * clock_factor; - } - } - - return tick / tick_in_usec; -} - -static NMPObject * -_new_from_nl_qdisc(NMPlatform *platform, struct nlmsghdr *nlh, gboolean id_only) -{ - static const struct nla_policy policy[] = { - [TCA_KIND] = {.type = NLA_STRING}, - [TCA_OPTIONS] = {.type = NLA_NESTED}, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - const struct tcmsg *tcm; - nm_auto_nmpobj NMPObject *obj = NULL; - - if (nlmsg_parse_arr(nlh, sizeof(*tcm), tb, policy) < 0) - return NULL; - - if (!tb[TCA_KIND]) - return NULL; - - tcm = nlmsg_data(nlh); - - obj = nmp_object_new(NMP_OBJECT_TYPE_QDISC, NULL); - - obj->qdisc.kind = g_intern_string(nla_get_string(tb[TCA_KIND])); - obj->qdisc.ifindex = tcm->tcm_ifindex; - obj->qdisc.addr_family = tcm->tcm_family; - obj->qdisc.handle = tcm->tcm_handle; - obj->qdisc.parent = tcm->tcm_parent; - obj->qdisc.info = tcm->tcm_info; - - if (nm_streq0(obj->qdisc.kind, "fq_codel")) { - obj->qdisc.fq_codel.memory_limit = NM_PLATFORM_FQ_CODEL_MEMORY_LIMIT_UNSET; - obj->qdisc.fq_codel.ce_threshold = NM_PLATFORM_FQ_CODEL_CE_THRESHOLD_DISABLED; - } - - if (tb[TCA_OPTIONS]) { - struct nlattr *options_attr; - int remaining; - - if (nm_streq0(obj->qdisc.kind, "sfq")) { - struct tc_sfq_qopt_v1 opt; - - if (tb[TCA_OPTIONS]->nla_len >= nla_attr_size(sizeof(opt))) { - memcpy(&opt, nla_data(tb[TCA_OPTIONS]), sizeof(opt)); - obj->qdisc.sfq.quantum = opt.v0.quantum; - obj->qdisc.sfq.perturb_period = opt.v0.perturb_period; - obj->qdisc.sfq.limit = opt.v0.limit; - obj->qdisc.sfq.divisor = opt.v0.divisor; - obj->qdisc.sfq.flows = opt.v0.flows; - obj->qdisc.sfq.depth = opt.depth; - } - } else if (nm_streq0(obj->qdisc.kind, "tbf")) { - static const struct nla_policy tbf_policy[] = { - [TCA_TBF_PARMS] = {.minlen = sizeof(struct tc_tbf_qopt)}, - [TCA_TBF_RATE64] = {.type = NLA_U64}, - }; - struct nlattr * tbf_tb[G_N_ELEMENTS(tbf_policy)]; - struct tc_tbf_qopt opt; - - if (nla_parse_nested_arr(tbf_tb, tb[TCA_OPTIONS], tbf_policy) < 0) - return NULL; - if (!tbf_tb[TCA_TBF_PARMS]) - return NULL; - - nla_memcpy_checked_size(&opt, tbf_tb[TCA_TBF_PARMS], sizeof(opt)); - obj->qdisc.tbf.rate = opt.rate.rate; - if (tbf_tb[TCA_TBF_RATE64]) - obj->qdisc.tbf.rate = nla_get_u64(tbf_tb[TCA_TBF_RATE64]); - obj->qdisc.tbf.burst = - ((double) obj->qdisc.tbf.rate * psched_tick_to_time(platform, opt.buffer)) - / PSCHED_TIME_UNITS_PER_SEC; - obj->qdisc.tbf.limit = opt.limit; - } else { - nla_for_each_nested (options_attr, tb[TCA_OPTIONS], remaining) { - if (nla_len(options_attr) < sizeof(uint32_t)) - continue; - - if (nm_streq0(obj->qdisc.kind, "fq_codel")) { - switch (nla_type(options_attr)) { - case TCA_FQ_CODEL_LIMIT: - obj->qdisc.fq_codel.limit = nla_get_u32(options_attr); - break; - case TCA_FQ_CODEL_FLOWS: - obj->qdisc.fq_codel.flows = nla_get_u32(options_attr); - break; - case TCA_FQ_CODEL_TARGET: - obj->qdisc.fq_codel.target = nla_get_u32(options_attr); - break; - case TCA_FQ_CODEL_INTERVAL: - obj->qdisc.fq_codel.interval = nla_get_u32(options_attr); - break; - case TCA_FQ_CODEL_QUANTUM: - obj->qdisc.fq_codel.quantum = nla_get_u32(options_attr); - break; - case TCA_FQ_CODEL_CE_THRESHOLD: - obj->qdisc.fq_codel.ce_threshold = nla_get_u32(options_attr); - break; - case TCA_FQ_CODEL_MEMORY_LIMIT: - obj->qdisc.fq_codel.memory_limit = nla_get_u32(options_attr); - break; - case TCA_FQ_CODEL_ECN: - obj->qdisc.fq_codel.ecn = !!nla_get_u32(options_attr); - break; - } - } - } - } - } - - return g_steal_pointer(&obj); -} - -static NMPObject * -_new_from_nl_tfilter(struct nlmsghdr *nlh, gboolean id_only) -{ - static const struct nla_policy policy[] = { - [TCA_KIND] = {.type = NLA_STRING}, - }; - struct nlattr * tb[G_N_ELEMENTS(policy)]; - NMPObject * obj = NULL; - const struct tcmsg *tcm; - - if (nlmsg_parse_arr(nlh, sizeof(*tcm), tb, policy) < 0) - return NULL; - - if (!tb[TCA_KIND]) - return NULL; - - tcm = nlmsg_data(nlh); - - obj = nmp_object_new(NMP_OBJECT_TYPE_TFILTER, NULL); - - obj->tfilter.kind = g_intern_string(nla_get_string(tb[TCA_KIND])); - obj->tfilter.ifindex = tcm->tcm_ifindex; - obj->tfilter.addr_family = tcm->tcm_family; - obj->tfilter.handle = tcm->tcm_handle; - obj->tfilter.parent = tcm->tcm_parent; - obj->tfilter.info = tcm->tcm_info; - - return obj; -} - -/** - * nmp_object_new_from_nl: - * @platform: (allow-none): for creating certain objects, the constructor wants to check - * sysfs. For this the platform instance is needed. If missing, the object might not - * be correctly detected. - * @cache: (allow-none): for certain objects, the netlink message doesn't contain all the information. - * If a cache is given, the object is completed with information from the cache. - * @nlh: the netlink message header - * @id_only: whether only to create an empty object with only the ID fields set. - * - * Returns: %NULL or a newly created NMPObject instance. - **/ -static NMPObject * -nmp_object_new_from_nl(NMPlatform * platform, - const NMPCache *cache, - struct nl_msg * msg, - gboolean id_only) -{ - struct nlmsghdr *msghdr; - - if (nlmsg_get_proto(msg) != NETLINK_ROUTE) - return NULL; - - msghdr = nlmsg_hdr(msg); - - switch (msghdr->nlmsg_type) { - case RTM_NEWLINK: - case RTM_DELLINK: - case RTM_GETLINK: - case RTM_SETLINK: - return _new_from_nl_link(platform, cache, msghdr, id_only); - case RTM_NEWADDR: - case RTM_DELADDR: - case RTM_GETADDR: - return _new_from_nl_addr(msghdr, id_only); - case RTM_NEWROUTE: - case RTM_DELROUTE: - case RTM_GETROUTE: - return _new_from_nl_route(msghdr, id_only); - case RTM_NEWRULE: - case RTM_DELRULE: - case RTM_GETRULE: - return _new_from_nl_routing_rule(msghdr, id_only); - case RTM_NEWQDISC: - case RTM_DELQDISC: - case RTM_GETQDISC: - return _new_from_nl_qdisc(platform, msghdr, id_only); - case RTM_NEWTFILTER: - case RTM_DELTFILTER: - case RTM_GETTFILTER: - return _new_from_nl_tfilter(msghdr, id_only); - default: - return NULL; - } -} - -/*****************************************************************************/ - -static gboolean -_nl_msg_new_link_set_afspec(struct nl_msg *msg, int addr_gen_mode, NMUtilsIPv6IfaceId *iid) -{ - struct nlattr *af_spec; - struct nlattr *af_attr; - - nm_assert(msg); - - if (!(af_spec = nla_nest_start(msg, IFLA_AF_SPEC))) - goto nla_put_failure; - - if (addr_gen_mode >= 0 || iid) { - if (!(af_attr = nla_nest_start(msg, AF_INET6))) - goto nla_put_failure; - - if (addr_gen_mode >= 0) - NLA_PUT_U8(msg, IFLA_INET6_ADDR_GEN_MODE, addr_gen_mode); - - if (iid) { - struct in6_addr i6_token = {.s6_addr = { - 0, - }}; - - nm_utils_ipv6_addr_set_interface_identifier(&i6_token, *iid); - NLA_PUT(msg, IFLA_INET6_TOKEN, sizeof(struct in6_addr), &i6_token); - } - - nla_nest_end(msg, af_attr); - } - - nla_nest_end(msg, af_spec); - - return TRUE; -nla_put_failure: - g_return_val_if_reached(FALSE); -} - -static gboolean -_nl_msg_new_link_set_linkinfo(struct nl_msg *msg, NMLinkType link_type, gconstpointer extra_data) -{ - struct nlattr *info; - struct nlattr *data = NULL; - const char * kind; - - nm_assert(msg); - - kind = nm_link_type_to_rtnl_type_string(link_type); - if (!kind) - goto nla_put_failure; - - if (!(info = nla_nest_start(msg, IFLA_LINKINFO))) - goto nla_put_failure; - - NLA_PUT_STRING(msg, IFLA_INFO_KIND, kind); - - switch (link_type) { - case NM_LINK_TYPE_BRIDGE: - { - const NMPlatformLnkBridge *props = extra_data; - - nm_assert(extra_data); - - if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) - goto nla_put_failure; - - NLA_PUT_U32(msg, IFLA_BR_FORWARD_DELAY, props->forward_delay); - NLA_PUT_U32(msg, IFLA_BR_HELLO_TIME, props->hello_time); - NLA_PUT_U32(msg, IFLA_BR_MAX_AGE, props->max_age); - NLA_PUT_U32(msg, IFLA_BR_AGEING_TIME, props->ageing_time); - NLA_PUT_U32(msg, IFLA_BR_STP_STATE, !!props->stp_state); - NLA_PUT_U16(msg, IFLA_BR_PRIORITY, props->priority); - NLA_PUT_U16(msg, IFLA_BR_VLAN_PROTOCOL, htons(props->vlan_protocol)); - if (props->vlan_stats_enabled) - NLA_PUT_U8(msg, IFLA_BR_VLAN_STATS_ENABLED, !!props->vlan_stats_enabled); - NLA_PUT_U16(msg, IFLA_BR_GROUP_FWD_MASK, props->group_fwd_mask); - NLA_PUT(msg, IFLA_BR_GROUP_ADDR, sizeof(props->group_addr), &props->group_addr); - NLA_PUT_U8(msg, IFLA_BR_MCAST_SNOOPING, !!props->mcast_snooping); - NLA_PUT_U8(msg, IFLA_BR_MCAST_ROUTER, props->mcast_router); - NLA_PUT_U8(msg, IFLA_BR_MCAST_QUERY_USE_IFADDR, !!props->mcast_query_use_ifaddr); - NLA_PUT_U8(msg, IFLA_BR_MCAST_QUERIER, !!props->mcast_querier); - NLA_PUT_U32(msg, IFLA_BR_MCAST_HASH_MAX, props->mcast_hash_max); - NLA_PUT_U32(msg, IFLA_BR_MCAST_LAST_MEMBER_CNT, props->mcast_last_member_count); - NLA_PUT_U32(msg, IFLA_BR_MCAST_STARTUP_QUERY_CNT, props->mcast_startup_query_count); - NLA_PUT_U64(msg, IFLA_BR_MCAST_LAST_MEMBER_INTVL, props->mcast_last_member_interval); - NLA_PUT_U64(msg, IFLA_BR_MCAST_MEMBERSHIP_INTVL, props->mcast_membership_interval); - NLA_PUT_U64(msg, IFLA_BR_MCAST_QUERIER_INTVL, props->mcast_querier_interval); - NLA_PUT_U64(msg, IFLA_BR_MCAST_QUERY_INTVL, props->mcast_query_interval); - NLA_PUT_U64(msg, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, props->mcast_query_response_interval); - NLA_PUT_U64(msg, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, props->mcast_startup_query_interval); - break; - } - case NM_LINK_TYPE_VLAN: - { - const NMPlatformLnkVlan *props = extra_data; - - nm_assert(extra_data); - - if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) - goto nla_put_failure; - - NLA_PUT_U16(msg, IFLA_VLAN_ID, props->id); - - { - struct ifla_vlan_flags flags = { - .flags = props->flags & NM_VLAN_FLAGS_ALL, - .mask = NM_VLAN_FLAGS_ALL, - }; - - NLA_PUT(msg, IFLA_VLAN_FLAGS, sizeof(flags), &flags); - } - break; - } - case NM_LINK_TYPE_VRF: - { - const NMPlatformLnkVrf *props = extra_data; - - nm_assert(extra_data); - - if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) - goto nla_put_failure; - - NLA_PUT_U32(msg, IFLA_VRF_TABLE, props->table); - break; - } - case NM_LINK_TYPE_VXLAN: - { - const NMPlatformLnkVxlan *props = extra_data; - - nm_assert(extra_data); - - if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) - goto nla_put_failure; - - NLA_PUT_U32(msg, IFLA_VXLAN_ID, props->id); - - if (props->group) - NLA_PUT(msg, IFLA_VXLAN_GROUP, sizeof(props->group), &props->group); - else if (!IN6_IS_ADDR_UNSPECIFIED(&props->group6)) - NLA_PUT(msg, IFLA_VXLAN_GROUP6, sizeof(props->group6), &props->group6); - - if (props->local) - NLA_PUT(msg, IFLA_VXLAN_LOCAL, sizeof(props->local), &props->local); - else if (!IN6_IS_ADDR_UNSPECIFIED(&props->local6)) - NLA_PUT(msg, IFLA_VXLAN_LOCAL6, sizeof(props->local6), &props->local6); - - if (props->parent_ifindex >= 0) - NLA_PUT_U32(msg, IFLA_VXLAN_LINK, props->parent_ifindex); - - if (props->src_port_min || props->src_port_max) { - struct nm_ifla_vxlan_port_range port_range = { - .low = htons(props->src_port_min), - .high = htons(props->src_port_max), - }; - - NLA_PUT(msg, IFLA_VXLAN_PORT_RANGE, sizeof(port_range), &port_range); - } - - NLA_PUT_U16(msg, IFLA_VXLAN_PORT, htons(props->dst_port)); - NLA_PUT_U8(msg, IFLA_VXLAN_TOS, props->tos); - NLA_PUT_U8(msg, IFLA_VXLAN_TTL, props->ttl); - NLA_PUT_U32(msg, IFLA_VXLAN_AGEING, props->ageing); - NLA_PUT_U32(msg, IFLA_VXLAN_LIMIT, props->limit); - NLA_PUT_U8(msg, IFLA_VXLAN_LEARNING, !!props->learning); - NLA_PUT_U8(msg, IFLA_VXLAN_PROXY, !!props->proxy); - NLA_PUT_U8(msg, IFLA_VXLAN_RSC, !!props->rsc); - NLA_PUT_U8(msg, IFLA_VXLAN_L2MISS, !!props->l2miss); - NLA_PUT_U8(msg, IFLA_VXLAN_L3MISS, !!props->l3miss); - break; - } - case NM_LINK_TYPE_VETH: - { - const char * veth_peer = extra_data; - const struct ifinfomsg ifi = {}; - struct nlattr * info_peer; - - nm_assert(veth_peer); - - if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) - goto nla_put_failure; - if (!(info_peer = nla_nest_start(msg, 1 /*VETH_INFO_PEER*/))) - goto nla_put_failure; - if (nlmsg_append_struct(msg, &ifi) < 0) - goto nla_put_failure; - NLA_PUT_STRING(msg, IFLA_IFNAME, veth_peer); - nla_nest_end(msg, info_peer); - break; - } - case NM_LINK_TYPE_GRE: - case NM_LINK_TYPE_GRETAP: - { - const NMPlatformLnkGre *props = extra_data; - - nm_assert(props); - nm_assert(props->is_tap == (link_type == NM_LINK_TYPE_GRETAP)); - - if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) - goto nla_put_failure; - - if (props->parent_ifindex) - NLA_PUT_U32(msg, IFLA_GRE_LINK, props->parent_ifindex); - NLA_PUT_U32(msg, IFLA_GRE_LOCAL, props->local); - NLA_PUT_U32(msg, IFLA_GRE_REMOTE, props->remote); - NLA_PUT_U8(msg, IFLA_GRE_TTL, props->ttl); - NLA_PUT_U8(msg, IFLA_GRE_TOS, props->tos); - NLA_PUT_U8(msg, IFLA_GRE_PMTUDISC, !!props->path_mtu_discovery); - NLA_PUT_U32(msg, IFLA_GRE_IKEY, htonl(props->input_key)); - NLA_PUT_U32(msg, IFLA_GRE_OKEY, htonl(props->output_key)); - NLA_PUT_U16(msg, IFLA_GRE_IFLAGS, htons(props->input_flags)); - NLA_PUT_U16(msg, IFLA_GRE_OFLAGS, htons(props->output_flags)); - break; - } - case NM_LINK_TYPE_SIT: - { - const NMPlatformLnkSit *props = extra_data; - - nm_assert(props); - - if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) - goto nla_put_failure; - - if (props->parent_ifindex) - NLA_PUT_U32(msg, IFLA_IPTUN_LINK, props->parent_ifindex); - NLA_PUT_U32(msg, IFLA_IPTUN_LOCAL, props->local); - NLA_PUT_U32(msg, IFLA_IPTUN_REMOTE, props->remote); - NLA_PUT_U8(msg, IFLA_IPTUN_TTL, props->ttl); - NLA_PUT_U8(msg, IFLA_IPTUN_TOS, props->tos); - NLA_PUT_U8(msg, IFLA_IPTUN_PMTUDISC, !!props->path_mtu_discovery); - break; - } - case NM_LINK_TYPE_IP6TNL: - { - const NMPlatformLnkIp6Tnl *props = extra_data; - guint32 flowinfo; - - nm_assert(props); - nm_assert(!props->is_gre); - - if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) - goto nla_put_failure; - - if (props->parent_ifindex) - NLA_PUT_U32(msg, IFLA_IPTUN_LINK, props->parent_ifindex); - - if (!IN6_IS_ADDR_UNSPECIFIED(&props->local)) - NLA_PUT(msg, IFLA_IPTUN_LOCAL, sizeof(props->local), &props->local); - if (!IN6_IS_ADDR_UNSPECIFIED(&props->remote)) - NLA_PUT(msg, IFLA_IPTUN_REMOTE, sizeof(props->remote), &props->remote); - - NLA_PUT_U8(msg, IFLA_IPTUN_TTL, props->ttl); - NLA_PUT_U8(msg, IFLA_IPTUN_ENCAP_LIMIT, props->encap_limit); - - flowinfo = props->flow_label & IP6_FLOWINFO_FLOWLABEL_MASK; - flowinfo |= (props->tclass << IP6_FLOWINFO_TCLASS_SHIFT) & IP6_FLOWINFO_TCLASS_MASK; - NLA_PUT_U32(msg, IFLA_IPTUN_FLOWINFO, htonl(flowinfo)); - NLA_PUT_U8(msg, IFLA_IPTUN_PROTO, props->proto); - NLA_PUT_U32(msg, IFLA_IPTUN_FLAGS, props->flags); - break; - } - case NM_LINK_TYPE_IP6GRE: - case NM_LINK_TYPE_IP6GRETAP: - { - const NMPlatformLnkIp6Tnl *props = extra_data; - guint32 flowinfo; - - nm_assert(props); - nm_assert(props->is_gre); - - if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) - goto nla_put_failure; - - if (props->parent_ifindex) - NLA_PUT_U32(msg, IFLA_GRE_LINK, props->parent_ifindex); - - NLA_PUT_U32(msg, IFLA_GRE_IKEY, htonl(props->input_key)); - NLA_PUT_U32(msg, IFLA_GRE_OKEY, htonl(props->output_key)); - NLA_PUT_U16(msg, IFLA_GRE_IFLAGS, htons(props->input_flags)); - NLA_PUT_U16(msg, IFLA_GRE_OFLAGS, htons(props->output_flags)); - - if (!IN6_IS_ADDR_UNSPECIFIED(&props->local)) - NLA_PUT(msg, IFLA_GRE_LOCAL, sizeof(props->local), &props->local); - if (!IN6_IS_ADDR_UNSPECIFIED(&props->local)) - NLA_PUT(msg, IFLA_GRE_REMOTE, sizeof(props->remote), &props->remote); - - NLA_PUT_U8(msg, IFLA_GRE_TTL, props->ttl); - NLA_PUT_U8(msg, IFLA_GRE_ENCAP_LIMIT, props->encap_limit); - - flowinfo = props->flow_label & IP6_FLOWINFO_FLOWLABEL_MASK; - flowinfo |= (props->tclass << IP6_FLOWINFO_TCLASS_SHIFT) & IP6_FLOWINFO_TCLASS_MASK; - NLA_PUT_U32(msg, IFLA_GRE_FLOWINFO, htonl(flowinfo)); - NLA_PUT_U32(msg, IFLA_GRE_FLAGS, props->flags); - break; - } - case NM_LINK_TYPE_IPIP: - { - const NMPlatformLnkIpIp *props = extra_data; - - nm_assert(props); - - if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) - goto nla_put_failure; - - if (props->parent_ifindex) - NLA_PUT_U32(msg, IFLA_IPTUN_LINK, props->parent_ifindex); - NLA_PUT_U32(msg, IFLA_IPTUN_LOCAL, props->local); - NLA_PUT_U32(msg, IFLA_IPTUN_REMOTE, props->remote); - NLA_PUT_U8(msg, IFLA_IPTUN_TTL, props->ttl); - NLA_PUT_U8(msg, IFLA_IPTUN_TOS, props->tos); - NLA_PUT_U8(msg, IFLA_IPTUN_PMTUDISC, !!props->path_mtu_discovery); - break; - } - case NM_LINK_TYPE_MACSEC: - { - const NMPlatformLnkMacsec *props = extra_data; - - nm_assert(props); - - if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) - goto nla_put_failure; - - if (props->icv_length) - NLA_PUT_U8(msg, IFLA_MACSEC_ICV_LEN, 16); - if (props->cipher_suite) - NLA_PUT_U64(msg, IFLA_MACSEC_CIPHER_SUITE, props->cipher_suite); - if (props->replay_protect) - NLA_PUT_U32(msg, IFLA_MACSEC_WINDOW, props->window); - - NLA_PUT_U64(msg, IFLA_MACSEC_SCI, htobe64(props->sci)); - NLA_PUT_U8(msg, IFLA_MACSEC_ENCODING_SA, props->encoding_sa); - NLA_PUT_U8(msg, IFLA_MACSEC_ENCRYPT, props->encrypt); - NLA_PUT_U8(msg, IFLA_MACSEC_PROTECT, props->protect); - NLA_PUT_U8(msg, IFLA_MACSEC_INC_SCI, props->include_sci); - NLA_PUT_U8(msg, IFLA_MACSEC_ES, props->es); - NLA_PUT_U8(msg, IFLA_MACSEC_SCB, props->scb); - NLA_PUT_U8(msg, IFLA_MACSEC_REPLAY_PROTECT, props->replay_protect); - NLA_PUT_U8(msg, IFLA_MACSEC_VALIDATION, props->validation); - break; - }; - case NM_LINK_TYPE_MACVTAP: - case NM_LINK_TYPE_MACVLAN: - { - const NMPlatformLnkMacvlan *props = extra_data; - - nm_assert(props); - - if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) - goto nla_put_failure; - - NLA_PUT_U32(msg, IFLA_MACVLAN_MODE, props->mode); - NLA_PUT_U16(msg, IFLA_MACVLAN_FLAGS, props->no_promisc ? MACVLAN_FLAG_NOPROMISC : 0); - break; - } - default: - nm_assert(!extra_data); - break; - } - - if (data) - nla_nest_end(msg, data); - - nla_nest_end(msg, info); - - return TRUE; -nla_put_failure: - g_return_val_if_reached(FALSE); -} - -static gboolean -_nl_msg_new_link_set_linkinfo_vlan(struct nl_msg * msg, - int vlan_id, - guint32 flags_mask, - guint32 flags_set, - const NMVlanQosMapping *ingress_qos, - int ingress_qos_len, - const NMVlanQosMapping *egress_qos, - int egress_qos_len) -{ - struct nlattr *info; - struct nlattr *data; - guint i; - gboolean has_any_vlan_properties = FALSE; - - G_STATIC_ASSERT(NM_VLAN_FLAG_REORDER_HEADERS == (guint32) VLAN_FLAG_REORDER_HDR); - G_STATIC_ASSERT(NM_VLAN_FLAG_GVRP == (guint32) VLAN_FLAG_GVRP); - G_STATIC_ASSERT(NM_VLAN_FLAG_LOOSE_BINDING == (guint32) VLAN_FLAG_LOOSE_BINDING); - G_STATIC_ASSERT(NM_VLAN_FLAG_MVRP == (guint32) VLAN_FLAG_MVRP); - -#define VLAN_XGRESS_PRIO_VALID(from) (((from) & ~(guint32) 0x07) == 0) - - nm_assert(msg); - - /* We must not create an empty IFLA_LINKINFO section. Otherwise, kernel - * rejects the request as invalid. */ - if (flags_mask != 0 || vlan_id >= 0) - has_any_vlan_properties = TRUE; - if (!has_any_vlan_properties && ingress_qos && ingress_qos_len > 0) { - for (i = 0; i < ingress_qos_len; i++) { - if (VLAN_XGRESS_PRIO_VALID(ingress_qos[i].from)) { - has_any_vlan_properties = TRUE; - break; - } - } - } - if (!has_any_vlan_properties && egress_qos && egress_qos_len > 0) { - for (i = 0; i < egress_qos_len; i++) { - if (VLAN_XGRESS_PRIO_VALID(egress_qos[i].to)) { - has_any_vlan_properties = TRUE; - break; - } - } - } - if (!has_any_vlan_properties) - return TRUE; - - if (!(info = nla_nest_start(msg, IFLA_LINKINFO))) - goto nla_put_failure; - - NLA_PUT_STRING(msg, IFLA_INFO_KIND, "vlan"); - - if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) - goto nla_put_failure; - - if (vlan_id >= 0) - NLA_PUT_U16(msg, IFLA_VLAN_ID, vlan_id); - - if (flags_mask != 0) { - struct ifla_vlan_flags flags = { - .flags = flags_mask & flags_set, - .mask = flags_mask, - }; - - NLA_PUT(msg, IFLA_VLAN_FLAGS, sizeof(flags), &flags); - } - - if (ingress_qos && ingress_qos_len > 0) { - struct nlattr *qos = NULL; - - for (i = 0; i < ingress_qos_len; i++) { - /* Silently ignore invalid mappings. Kernel would truncate - * them and modify the wrong mapping. */ - if (VLAN_XGRESS_PRIO_VALID(ingress_qos[i].from)) { - if (!qos) { - if (!(qos = nla_nest_start(msg, IFLA_VLAN_INGRESS_QOS))) - goto nla_put_failure; - } - NLA_PUT(msg, i, sizeof(ingress_qos[i]), &ingress_qos[i]); - } - } - - if (qos) - nla_nest_end(msg, qos); - } - - if (egress_qos && egress_qos_len > 0) { - struct nlattr *qos = NULL; - - for (i = 0; i < egress_qos_len; i++) { - if (VLAN_XGRESS_PRIO_VALID(egress_qos[i].to)) { - if (!qos) { - if (!(qos = nla_nest_start(msg, IFLA_VLAN_EGRESS_QOS))) - goto nla_put_failure; - } - NLA_PUT(msg, i, sizeof(egress_qos[i]), &egress_qos[i]); - } - } - - if (qos) - nla_nest_end(msg, qos); - } - - nla_nest_end(msg, data); - nla_nest_end(msg, info); - - return TRUE; -nla_put_failure: - g_return_val_if_reached(FALSE); -} - -static struct nl_msg * -_nl_msg_new_link_full(int nlmsg_type, - int nlmsg_flags, - int ifindex, - const char *ifname, - guint8 family, - unsigned flags_mask, - unsigned flags_set) -{ - nm_auto_nlmsg struct nl_msg *msg = NULL; - const struct ifinfomsg ifi = { - .ifi_family = family, - .ifi_change = flags_mask, - .ifi_flags = flags_set, - .ifi_index = ifindex, - }; - - nm_assert(NM_IN_SET(nlmsg_type, RTM_DELLINK, RTM_NEWLINK, RTM_GETLINK, RTM_SETLINK)); - - msg = nlmsg_alloc_simple(nlmsg_type, nlmsg_flags); - - if (nlmsg_append_struct(msg, &ifi) < 0) - goto nla_put_failure; - - if (ifname) - NLA_PUT_STRING(msg, IFLA_IFNAME, ifname); - - return g_steal_pointer(&msg); - -nla_put_failure: - g_return_val_if_reached(NULL); -} - -static struct nl_msg * -_nl_msg_new_link(int nlmsg_type, int nlmsg_flags, int ifindex, const char *ifname) -{ - return _nl_msg_new_link_full(nlmsg_type, nlmsg_flags, ifindex, ifname, AF_UNSPEC, 0, 0); -} - -/* Copied and modified from libnl3's build_addr_msg(). */ -static struct nl_msg * -_nl_msg_new_address(int nlmsg_type, - int nlmsg_flags, - int family, - int ifindex, - gconstpointer address, - guint8 plen, - gconstpointer peer_address, - guint32 flags, - int scope, - guint32 lifetime, - guint32 preferred, - in_addr_t ip4_broadcast_address, - const char * label) -{ - nm_auto_nlmsg struct nl_msg *msg = NULL; - struct ifaddrmsg am = { - .ifa_family = family, - .ifa_index = ifindex, - .ifa_prefixlen = plen, - .ifa_flags = flags, - }; - gsize addr_len; - - nm_assert(NM_IN_SET(family, AF_INET, AF_INET6)); - nm_assert(NM_IN_SET(nlmsg_type, RTM_NEWADDR, RTM_DELADDR)); - - msg = nlmsg_alloc_simple(nlmsg_type, nlmsg_flags); - - if (scope == -1) { - /* Allow having scope unset, and detect the scope (including IPv4 compatibility hack). */ - if (family == AF_INET && address && *((char *) address) == 127) - scope = RT_SCOPE_HOST; - else - scope = RT_SCOPE_UNIVERSE; - } - am.ifa_scope = scope, - - addr_len = family == AF_INET ? sizeof(in_addr_t) : sizeof(struct in6_addr); - - if (nlmsg_append_struct(msg, &am) < 0) - goto nla_put_failure; - - if (address) - NLA_PUT(msg, IFA_LOCAL, addr_len, address); - - if (peer_address) - NLA_PUT(msg, IFA_ADDRESS, addr_len, peer_address); - else if (address) - NLA_PUT(msg, IFA_ADDRESS, addr_len, address); - - if (label && label[0]) - NLA_PUT_STRING(msg, IFA_LABEL, label); - - if (ip4_broadcast_address != 0) - NLA_PUT(msg, IFA_BROADCAST, sizeof(in_addr_t), &ip4_broadcast_address); - - if (lifetime != NM_PLATFORM_LIFETIME_PERMANENT || preferred != NM_PLATFORM_LIFETIME_PERMANENT) { - struct ifa_cacheinfo ca = { - .ifa_valid = lifetime, - .ifa_prefered = preferred, - }; - - NLA_PUT(msg, IFA_CACHEINFO, sizeof(ca), &ca); - } - - if (flags & ~((guint32) 0xFF)) { - /* only set the IFA_FLAGS attribute, if they actually contain additional - * flags that are not already set to am.ifa_flags. - * - * Older kernels refuse RTM_NEWADDR and RTM_NEWROUTE messages with EINVAL - * if they contain unknown netlink attributes. See net/core/rtnetlink.c, which - * was fixed by kernel commit 661d2967b3f1b34eeaa7e212e7b9bbe8ee072b59. */ - NLA_PUT_U32(msg, IFA_FLAGS, flags); - } - - return g_steal_pointer(&msg); - -nla_put_failure: - g_return_val_if_reached(NULL); -} - -static guint32 -ip_route_get_lock_flag(const NMPlatformIPRoute *route) -{ - return (((guint32) route->lock_window) << RTAX_WINDOW) - | (((guint32) route->lock_cwnd) << RTAX_CWND) - | (((guint32) route->lock_initcwnd) << RTAX_INITCWND) - | (((guint32) route->lock_initrwnd) << RTAX_INITRWND) - | (((guint32) route->lock_mtu) << RTAX_MTU); -} - -/* Copied and modified from libnl3's build_route_msg() and rtnl_route_build_msg(). */ -static struct nl_msg * -_nl_msg_new_route(int nlmsg_type, guint16 nlmsgflags, const NMPObject *obj) -{ - nm_auto_nlmsg struct nl_msg *msg = NULL; - const NMPClass * klass = NMP_OBJECT_GET_CLASS(obj); - gboolean is_v4 = klass->addr_family == AF_INET; - const guint32 lock = ip_route_get_lock_flag(NMP_OBJECT_CAST_IP_ROUTE(obj)); - const guint32 table = - nm_platform_route_table_uncoerce(NMP_OBJECT_CAST_IP_ROUTE(obj)->table_coerced, TRUE); - const struct rtmsg rtmsg = { - .rtm_family = klass->addr_family, - .rtm_tos = is_v4 ? obj->ip4_route.tos : 0, - .rtm_table = table <= 0xFF ? table : RT_TABLE_UNSPEC, - .rtm_protocol = nmp_utils_ip_config_source_coerce_to_rtprot(obj->ip_route.rt_source), - .rtm_scope = - is_v4 ? nm_platform_route_scope_inv(obj->ip4_route.scope_inv) : RT_SCOPE_NOWHERE, - .rtm_type = nm_platform_route_type_uncoerce(NMP_OBJECT_CAST_IP_ROUTE(obj)->type_coerced), - .rtm_flags = obj->ip_route.r_rtm_flags & ((unsigned) (RTNH_F_ONLINK)), - .rtm_dst_len = obj->ip_route.plen, - .rtm_src_len = is_v4 ? 0 : NMP_OBJECT_CAST_IP6_ROUTE(obj)->src_plen, - }; - - gsize addr_len; - - nm_assert( - NM_IN_SET(NMP_OBJECT_GET_TYPE(obj), NMP_OBJECT_TYPE_IP4_ROUTE, NMP_OBJECT_TYPE_IP6_ROUTE)); - nm_assert(NM_IN_SET(nlmsg_type, RTM_NEWROUTE, RTM_DELROUTE)); - - msg = nlmsg_alloc_simple(nlmsg_type, (int) nlmsgflags); - - if (nlmsg_append_struct(msg, &rtmsg) < 0) - goto nla_put_failure; - - addr_len = is_v4 ? sizeof(in_addr_t) : sizeof(struct in6_addr); - - NLA_PUT(msg, - RTA_DST, - addr_len, - is_v4 ? (gconstpointer) &obj->ip4_route.network - : (gconstpointer) &obj->ip6_route.network); - - if (!is_v4) { - if (!IN6_IS_ADDR_UNSPECIFIED(&NMP_OBJECT_CAST_IP6_ROUTE(obj)->src)) - NLA_PUT(msg, RTA_SRC, addr_len, &obj->ip6_route.src); - } - - NLA_PUT_U32(msg, - RTA_PRIORITY, - is_v4 ? nm_platform_ip4_route_get_effective_metric(&obj->ip4_route) - : nm_platform_ip6_route_get_effective_metric(&obj->ip6_route)); - - if (table > 0xFF) - NLA_PUT_U32(msg, RTA_TABLE, table); - - if (is_v4) { - if (NMP_OBJECT_CAST_IP4_ROUTE(obj)->pref_src) - NLA_PUT(msg, RTA_PREFSRC, addr_len, &obj->ip4_route.pref_src); - } else { - if (!IN6_IS_ADDR_UNSPECIFIED(&NMP_OBJECT_CAST_IP6_ROUTE(obj)->pref_src)) - NLA_PUT(msg, RTA_PREFSRC, addr_len, &obj->ip6_route.pref_src); - } - - if (obj->ip_route.mss || obj->ip_route.window || obj->ip_route.cwnd || obj->ip_route.initcwnd - || obj->ip_route.initrwnd || obj->ip_route.mtu || lock) { - struct nlattr *metrics; - - metrics = nla_nest_start(msg, RTA_METRICS); - if (!metrics) - goto nla_put_failure; - - if (obj->ip_route.mss) - NLA_PUT_U32(msg, RTAX_ADVMSS, obj->ip_route.mss); - if (obj->ip_route.window) - NLA_PUT_U32(msg, RTAX_WINDOW, obj->ip_route.window); - if (obj->ip_route.cwnd) - NLA_PUT_U32(msg, RTAX_CWND, obj->ip_route.cwnd); - if (obj->ip_route.initcwnd) - NLA_PUT_U32(msg, RTAX_INITCWND, obj->ip_route.initcwnd); - if (obj->ip_route.initrwnd) - NLA_PUT_U32(msg, RTAX_INITRWND, obj->ip_route.initrwnd); - if (obj->ip_route.mtu) - NLA_PUT_U32(msg, RTAX_MTU, obj->ip_route.mtu); - if (lock) - NLA_PUT_U32(msg, RTAX_LOCK, lock); - - nla_nest_end(msg, metrics); - } - - /* We currently don't have need for multi-hop routes... */ - if (is_v4) { - NLA_PUT(msg, RTA_GATEWAY, addr_len, &obj->ip4_route.gateway); - } else { - if (!IN6_IS_ADDR_UNSPECIFIED(&obj->ip6_route.gateway)) - NLA_PUT(msg, RTA_GATEWAY, addr_len, &obj->ip6_route.gateway); - } - NLA_PUT_U32(msg, RTA_OIF, obj->ip_route.ifindex); - - if (!is_v4 && obj->ip6_route.rt_pref != NM_ICMPV6_ROUTER_PREF_MEDIUM) - NLA_PUT_U8(msg, RTA_PREF, obj->ip6_route.rt_pref); - - return g_steal_pointer(&msg); - -nla_put_failure: - g_return_val_if_reached(NULL); -} - -static struct nl_msg * -_nl_msg_new_routing_rule(int nlmsg_type, int nlmsg_flags, const NMPlatformRoutingRule *routing_rule) -{ - nm_auto_nlmsg struct nl_msg *msg = NULL; - const guint8 addr_size = nm_utils_addr_family_to_size(routing_rule->addr_family); - guint32 table; - - msg = nlmsg_alloc_simple(nlmsg_type, nlmsg_flags); - - table = routing_rule->table; - - if (NM_IN_SET(routing_rule->addr_family, AF_INET, AF_INET6) - && routing_rule->action == FR_ACT_TO_TBL && routing_rule->l3mdev == 0 - && table == RT_TABLE_UNSPEC) { - /* for IPv6, this setting is invalid and rejected by kernel. That's fine. - * - * for IPv4, kernel will automatically assign an unused table. That's not - * fine, because we don't know what we will get. - * - * The caller must not allow that to happen. */ - nm_assert_not_reached(); - } - - { - const struct fib_rule_hdr frh = { - .family = routing_rule->addr_family, - .src_len = routing_rule->src_len, - .dst_len = routing_rule->dst_len, - .tos = routing_rule->tos, - .table = table < 0x100u ? (guint8) table : (guint8) RT_TABLE_UNSPEC, - .action = routing_rule->action, - - /* we only allow setting the "not" flag. */ - .flags = routing_rule->flags & ((guint32) FIB_RULE_INVERT), - }; - - if (nlmsg_append_struct(msg, &frh) < 0) - goto nla_put_failure; - } - - if (table > G_MAXINT8) - NLA_PUT_U32(msg, FRA_TABLE, table); - - if (routing_rule->suppress_prefixlen_inverse != 0) - NLA_PUT_U32(msg, FRA_SUPPRESS_PREFIXLEN, ~routing_rule->suppress_prefixlen_inverse); - - if (routing_rule->suppress_ifgroup_inverse != 0) - NLA_PUT_U32(msg, FRA_SUPPRESS_IFGROUP, ~routing_rule->suppress_ifgroup_inverse); - - if (routing_rule->iifname[0] != '\0') - NLA_PUT_STRING(msg, FRA_IIFNAME, routing_rule->iifname); - - if (routing_rule->oifname[0] != '\0') - NLA_PUT_STRING(msg, FRA_OIFNAME, routing_rule->oifname); - - /* we always set the priority and don't support letting kernel pick one. */ - NLA_PUT_U32(msg, FRA_PRIORITY, routing_rule->priority); - - if (routing_rule->fwmark != 0 || routing_rule->fwmask != 0) { - NLA_PUT_U32(msg, FRA_FWMARK, routing_rule->fwmark); - NLA_PUT_U32(msg, FRA_FWMASK, routing_rule->fwmask); - } - - if (routing_rule->src_len > 0) - NLA_PUT(msg, FRA_SRC, addr_size, &routing_rule->src); - - if (routing_rule->dst_len > 0) - NLA_PUT(msg, FRA_DST, addr_size, &routing_rule->dst); - - if (routing_rule->flow != 0) { - /* only relevant for IPv4. */ - NLA_PUT_U32(msg, FRA_FLOW, routing_rule->flow); - } - - if (routing_rule->tun_id != 0) - NLA_PUT_U64(msg, FRA_TUN_ID, htobe64(routing_rule->tun_id)); - - if (routing_rule->l3mdev) - NLA_PUT_U8(msg, FRA_L3MDEV, routing_rule->l3mdev); - - if (routing_rule->protocol != RTPROT_UNSPEC) - NLA_PUT_U8(msg, FRA_PROTOCOL, routing_rule->protocol); - - if (routing_rule->ip_proto != 0) - NLA_PUT_U8(msg, FRA_IP_PROTO, routing_rule->ip_proto); - - if (routing_rule->sport_range.start || routing_rule->sport_range.end) - NLA_PUT(msg, - FRA_SPORT_RANGE, - sizeof(routing_rule->sport_range), - &routing_rule->sport_range); - - if (routing_rule->dport_range.start || routing_rule->dport_range.end) - NLA_PUT(msg, - FRA_DPORT_RANGE, - sizeof(routing_rule->dport_range), - &routing_rule->dport_range); - - if (routing_rule->uid_range_has) - NLA_PUT(msg, FRA_UID_RANGE, sizeof(routing_rule->uid_range), &routing_rule->uid_range); - - switch (routing_rule->action) { - case FR_ACT_GOTO: - NLA_PUT_U32(msg, FRA_GOTO, routing_rule->goto_target); - break; - } - - return g_steal_pointer(&msg); - -nla_put_failure: - g_return_val_if_reached(NULL); -} - -static struct nl_msg * -_nl_msg_new_qdisc(int nlmsg_type, int nlmsg_flags, const NMPlatformQdisc *qdisc) -{ - nm_auto_nlmsg struct nl_msg *msg = NULL; - struct nlattr * tc_options; - const struct tcmsg tcm = { - .tcm_family = qdisc->addr_family, - .tcm_ifindex = qdisc->ifindex, - .tcm_handle = qdisc->handle, - .tcm_parent = qdisc->parent, - .tcm_info = qdisc->info, - }; - - msg = nlmsg_alloc_simple(nlmsg_type, nlmsg_flags | NMP_NLM_FLAG_F_ECHO); - - if (nlmsg_append_struct(msg, &tcm) < 0) - goto nla_put_failure; - - NLA_PUT_STRING(msg, TCA_KIND, qdisc->kind); - - if (nm_streq(qdisc->kind, "sfq")) { - struct tc_sfq_qopt_v1 opt = {}; - - opt.v0.quantum = qdisc->sfq.quantum; - opt.v0.limit = qdisc->sfq.limit; - opt.v0.perturb_period = qdisc->sfq.perturb_period; - opt.v0.flows = qdisc->sfq.flows; - opt.v0.divisor = qdisc->sfq.divisor; - opt.depth = qdisc->sfq.depth; - - NLA_PUT(msg, TCA_OPTIONS, sizeof(opt), &opt); - } else if (nm_streq(qdisc->kind, "tbf")) { - struct tc_tbf_qopt opt = {}; - - if (!(tc_options = nla_nest_start(msg, TCA_OPTIONS))) - goto nla_put_failure; - - opt.rate.rate = (qdisc->tbf.rate >= (1ULL << 32)) ? ~0U : (guint32) qdisc->tbf.rate; - if (qdisc->tbf.limit) - opt.limit = qdisc->tbf.limit; - else if (qdisc->tbf.latency) { - opt.limit = qdisc->tbf.rate * (double) qdisc->tbf.latency / PSCHED_TIME_UNITS_PER_SEC - + qdisc->tbf.burst; - } - - NLA_PUT(msg, TCA_TBF_PARMS, sizeof(opt), &opt); - if (qdisc->tbf.rate >= (1ULL << 32)) - NLA_PUT_U64(msg, TCA_TBF_RATE64, qdisc->tbf.rate); - NLA_PUT_U32(msg, TCA_TBF_BURST, qdisc->tbf.burst); - - nla_nest_end(msg, tc_options); - } else if (nm_streq(qdisc->kind, "prio")) { - struct tc_prio_qopt opt = {3, {1, 2, 2, 2, 1, 2, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1}}; - - NLA_PUT(msg, TCA_OPTIONS, sizeof(opt), &opt); - } else { - if (!(tc_options = nla_nest_start(msg, TCA_OPTIONS))) - goto nla_put_failure; - - if (nm_streq(qdisc->kind, "fq_codel")) { - if (qdisc->fq_codel.limit) - NLA_PUT_U32(msg, TCA_FQ_CODEL_LIMIT, qdisc->fq_codel.limit); - if (qdisc->fq_codel.flows) - NLA_PUT_U32(msg, TCA_FQ_CODEL_FLOWS, qdisc->fq_codel.flows); - if (qdisc->fq_codel.target) - NLA_PUT_U32(msg, TCA_FQ_CODEL_TARGET, qdisc->fq_codel.target); - if (qdisc->fq_codel.interval) - NLA_PUT_U32(msg, TCA_FQ_CODEL_INTERVAL, qdisc->fq_codel.interval); - if (qdisc->fq_codel.quantum) - NLA_PUT_U32(msg, TCA_FQ_CODEL_QUANTUM, qdisc->fq_codel.quantum); - if (qdisc->fq_codel.ce_threshold != NM_PLATFORM_FQ_CODEL_CE_THRESHOLD_DISABLED) - NLA_PUT_U32(msg, TCA_FQ_CODEL_CE_THRESHOLD, qdisc->fq_codel.ce_threshold); - if (qdisc->fq_codel.memory_limit != NM_PLATFORM_FQ_CODEL_MEMORY_LIMIT_UNSET) - NLA_PUT_U32(msg, TCA_FQ_CODEL_MEMORY_LIMIT, qdisc->fq_codel.memory_limit); - if (qdisc->fq_codel.ecn) - NLA_PUT_U32(msg, TCA_FQ_CODEL_ECN, qdisc->fq_codel.ecn); - } - - nla_nest_end(msg, tc_options); - } - - return g_steal_pointer(&msg); - -nla_put_failure: - g_return_val_if_reached(NULL); -} - -static struct nl_msg * -_nl_msg_new_tfilter(int nlmsg_type, int nlmsg_flags, const NMPlatformTfilter *tfilter) -{ - nm_auto_nlmsg struct nl_msg *msg = NULL; - struct nlattr * tc_options; - struct nlattr * act_tab; - const struct tcmsg tcm = { - .tcm_family = tfilter->addr_family, - .tcm_ifindex = tfilter->ifindex, - .tcm_handle = tfilter->handle, - .tcm_parent = tfilter->parent, - .tcm_info = tfilter->info, - }; - - msg = nlmsg_alloc_simple(nlmsg_type, nlmsg_flags | NMP_NLM_FLAG_F_ECHO); - - if (nlmsg_append_struct(msg, &tcm) < 0) - goto nla_put_failure; - - NLA_PUT_STRING(msg, TCA_KIND, tfilter->kind); - - if (!(tc_options = nla_nest_start(msg, TCA_OPTIONS))) - goto nla_put_failure; - - if (!(act_tab = nla_nest_start(msg, TCA_OPTIONS))) // 3 TCA_ACT_KIND TCA_ACT_KIND - goto nla_put_failure; - - if (tfilter->action.kind) { - const NMPlatformAction *action = &tfilter->action; - struct nlattr * prio; - struct nlattr * act_options; - - if (!(prio = nla_nest_start(msg, 1 /* priority */))) - goto nla_put_failure; - - NLA_PUT_STRING(msg, TCA_ACT_KIND, action->kind); - - if (nm_streq(action->kind, NM_PLATFORM_ACTION_KIND_SIMPLE)) { - const NMPlatformActionSimple *simple = &action->simple; - struct tc_defact sel = { - 0, - }; - - if (!(act_options = nla_nest_start(msg, TCA_ACT_OPTIONS))) - goto nla_put_failure; - - NLA_PUT(msg, TCA_DEF_PARMS, sizeof(sel), &sel); - NLA_PUT(msg, TCA_DEF_DATA, sizeof(simple->sdata), simple->sdata); - - nla_nest_end(msg, act_options); - - } else if (nm_streq(action->kind, NM_PLATFORM_ACTION_KIND_MIRRED)) { - const NMPlatformActionMirred *mirred = &action->mirred; - struct tc_mirred sel = { - 0, - }; - - if (!(act_options = nla_nest_start(msg, TCA_ACT_OPTIONS))) - goto nla_put_failure; - - if (mirred->egress && mirred->redirect) - sel.eaction = TCA_EGRESS_REDIR; - else if (mirred->egress && mirred->mirror) - sel.eaction = TCA_EGRESS_MIRROR; - else if (mirred->ingress && mirred->redirect) - sel.eaction = TCA_INGRESS_REDIR; - else if (mirred->ingress && mirred->mirror) - sel.eaction = TCA_INGRESS_MIRROR; - sel.ifindex = mirred->ifindex; - - NLA_PUT(msg, TCA_MIRRED_PARMS, sizeof(sel), &sel); - - nla_nest_end(msg, act_options); - } - - nla_nest_end(msg, prio); - } - - nla_nest_end(msg, tc_options); - - nla_nest_end(msg, act_tab); - - return g_steal_pointer(&msg); - -nla_put_failure: - g_return_val_if_reached(NULL); -} - -/*****************************************************************************/ - -static struct nl_sock * -_genl_sock(NMLinuxPlatform *platform) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - - return priv->genl; -} - -#define ASSERT_SYSCTL_ARGS(pathid, dirfd, path) \ - G_STMT_START \ - { \ - const char *const _pathid = (pathid); \ - const int _dirfd = (dirfd); \ - const char *const _path = (path); \ - \ - nm_assert(_path &&_path[0]); \ - g_assert(!strstr(_path, "/../")); \ - if (_dirfd < 0) { \ - nm_assert(!_pathid); \ - nm_assert(_path[0] == '/'); \ - nm_assert(g_str_has_prefix(_path, "/proc/sys/") || g_str_has_prefix(_path, "/sys/") \ - || g_str_has_prefix(_path, "/proc/net")); \ - } else { \ - nm_assert(_pathid &&_pathid[0] && _pathid[0] != '/'); \ - nm_assert(_path[0] != '/'); \ - } \ - } \ - G_STMT_END - -/*****************************************************************************/ - -/* core sysctl-set functions can be called from a non-main thread. - * Hence, we require locking from nm-logging. Indicate that by - * setting NM_THREAD_SAFE_ON_MAIN_THREAD to zero. */ -#undef NM_THREAD_SAFE_ON_MAIN_THREAD -#define NM_THREAD_SAFE_ON_MAIN_THREAD 0 - -static void -_log_dbg_sysctl_set_impl(NMPlatform *platform, - const char *pathid, - int dirfd, - const char *path, - const char *value) -{ - GError * error = NULL; - gs_free char *contents = NULL; - gs_free char *value_escaped = g_strescape(value, NULL); - - if (!nm_utils_file_get_contents(dirfd, - path, - 1 * 1024 * 1024, - NM_UTILS_FILE_GET_CONTENTS_FLAG_NONE, - &contents, - NULL, - NULL, - &error)) { - _LOGD("sysctl: setting '%s' to '%s' (current value cannot be read: %s)", - pathid ?: path, - value_escaped, - error->message); - g_clear_error(&error); - return; - } - - g_strstrip(contents); - if (nm_streq(contents, value)) - _LOGD("sysctl: setting '%s' to '%s' (current value is identical)", - pathid ?: path, - value_escaped); - else { - gs_free char *contents_escaped = g_strescape(contents, NULL); - - _LOGD("sysctl: setting '%s' to '%s' (current value is '%s')", - pathid ?: path, - value_escaped, - contents_escaped); - } -} - -#define _log_dbg_sysctl_set(platform, pathid, dirfd, path, value) \ - G_STMT_START \ - { \ - if (_LOGD_ENABLED()) { \ - _log_dbg_sysctl_set_impl(platform, pathid, dirfd, path, value); \ - } \ - } \ - G_STMT_END - -static gboolean -sysctl_set_internal(NMPlatform *platform, - const char *pathid, - int dirfd, - const char *path, - const char *value) -{ - int fd, tries; - gssize nwrote; - gssize len; - char * actual; - gs_free char *actual_free = NULL; - int errsv; - - if (dirfd < 0) { - pathid = path; - - fd = open(path, O_WRONLY | O_TRUNC | O_CLOEXEC); - if (fd == -1) { - errsv = errno; - if (errsv == ENOENT) { - _LOGD("sysctl: failed to open '%s': (%d) %s", - pathid, - errsv, - nm_strerror_native(errsv)); - } else { - _LOGE("sysctl: failed to open '%s': (%d) %s", - pathid, - errsv, - nm_strerror_native(errsv)); - } - errno = errsv; - return FALSE; - } - } else { - fd = openat(dirfd, path, O_WRONLY | O_TRUNC | O_CLOEXEC); - if (fd == -1) { - errsv = errno; - if (errsv == ENOENT) { - _LOGD("sysctl: failed to openat '%s': (%d) %s", - pathid, - errsv, - nm_strerror_native(errsv)); - } else { - _LOGE("sysctl: failed to openat '%s': (%d) %s", - pathid, - errsv, - nm_strerror_native(errsv)); - } - errno = errsv; - return FALSE; - } - } - - _log_dbg_sysctl_set(platform, pathid, dirfd, path, value); - - /* Most sysfs and sysctl options don't care about a trailing LF, while some - * (like infiniband) do. So always add the LF. Also, neither sysfs nor - * sysctl support partial writes so the LF must be added to the string we're - * about to write. - */ - len = strlen(value) + 1; - nm_assert(len > 0); - if (len > 512) - actual = actual_free = g_malloc(len + 1); - else - actual = g_alloca(len + 1); - memcpy(actual, value, len - 1); - actual[len - 1] = '\n'; - actual[len] = '\0'; - - /* Try to write the entire value three times if a partial write occurs */ - errsv = 0; - for (tries = 0, nwrote = 0; tries < 3 && nwrote < len - 1; tries++) { - nwrote = write(fd, actual, len); - if (nwrote == -1) { - errsv = errno; - if (errsv == EINTR) { - _LOGD("sysctl: interrupted, will try again"); - continue; - } - break; - } - } - if (nwrote == -1) { - NMLogLevel level = LOGL_ERR; - - if (errsv == EEXIST) { - level = LOGL_DEBUG; - } else if (errsv == EINVAL - && nm_utils_sysctl_ip_conf_is_path(AF_INET6, path, NULL, "mtu")) { - /* setting the MTU can fail under regular conditions. Suppress - * logging a warning. */ - level = LOGL_DEBUG; - } - - _NMLOG(level, - "sysctl: failed to set '%s' to '%s': (%d) %s", - path, - value, - errsv, - nm_strerror_native(errsv)); - } else if (nwrote < len - 1) { - _LOGE("sysctl: failed to set '%s' to '%s' after three attempts", path, value); - } - - if (nwrote < len - 1) { - if (nm_close(fd) != 0) { - if (errsv != 0) - errno = errsv; - } else if (errsv != 0) - errno = errsv; - else - errno = EIO; - return FALSE; - } - if (nm_close(fd) != 0) { - /* errno is already properly set. */ - return FALSE; - } - - /* success. errno is undefined (no need to set). */ - return TRUE; -} - -#undef NM_THREAD_SAFE_ON_MAIN_THREAD -#define NM_THREAD_SAFE_ON_MAIN_THREAD 1 - -/*****************************************************************************/ - -static gboolean -sysctl_set(NMPlatform *platform, const char *pathid, int dirfd, const char *path, const char *value) -{ - nm_auto_pop_netns NMPNetns *netns = NULL; - - g_return_val_if_fail(path, FALSE); - g_return_val_if_fail(value, FALSE); - - ASSERT_SYSCTL_ARGS(pathid, dirfd, path); - - if (dirfd < 0 && !nm_platform_netns_push(platform, &netns)) { - errno = ENETDOWN; - return FALSE; - } - - return sysctl_set_internal(platform, pathid, dirfd, path, value); -} - -typedef struct { - NMPlatform * platform; - char * pathid; - int dirfd; - char * path; - char ** values; - GCancellable * cancellable; - NMPlatformAsyncCallback callback; - gpointer callback_data; -} SysctlAsyncInfo; - -static void -sysctl_async_info_free(SysctlAsyncInfo *info) -{ - g_object_unref(info->platform); - g_free(info->pathid); - if (info->dirfd >= 0) - nm_close(info->dirfd); - g_free(info->path); - g_strfreev(info->values); - g_object_unref(info->cancellable); - g_slice_free(SysctlAsyncInfo, info); -} - -static void -sysctl_async_cb(GObject *object, GAsyncResult *res, gpointer user_data) -{ - NMPlatform * platform; - GTask * task = G_TASK(res); - SysctlAsyncInfo *info; - gs_free_error GError *error = NULL; - gs_free char * values_str = NULL; - - info = g_task_get_task_data(task); - - if (g_task_propagate_boolean(task, &error)) { - platform = info->platform; - _LOGD("sysctl: successfully set-async '%s' to values '%s'", - info->pathid ?: info->path, - (values_str = g_strjoinv(", ", info->values))); - } - - if (info->callback) - info->callback(error, info->callback_data); -} - -static void -sysctl_async_thread_fn(GTask * task, - gpointer source_object, - gpointer task_data, - GCancellable *cancellable) -{ - nm_auto_pop_netns NMPNetns *netns = NULL; - SysctlAsyncInfo * info = task_data; - GError * error = NULL; - char ** value; - - if (g_task_return_error_if_cancelled(task)) - return; - - if (info->dirfd < 0 && !nm_platform_netns_push(info->platform, &netns)) { - g_set_error_literal(&error, - NM_UTILS_ERROR, - NM_UTILS_ERROR_UNKNOWN, - "sysctl: failed changing namespace"); - g_task_return_error(task, error); - return; - } - - for (value = info->values; *value; value++) { - if (!sysctl_set_internal(info->platform, info->pathid, info->dirfd, info->path, *value)) { - g_set_error(&error, - NM_UTILS_ERROR, - NM_UTILS_ERROR_UNKNOWN, - "sysctl: failed setting '%s' to value '%s': %s", - info->pathid ?: info->path, - *value, - nm_strerror_native(errno)); - g_task_return_error(task, error); - return; - } - if (g_task_return_error_if_cancelled(task)) - return; - } - g_task_return_boolean(task, TRUE); -} - -static void -sysctl_set_async_return_idle(gpointer user_data, GCancellable *cancellable) -{ - gs_unref_object NMPlatform *platform = NULL; - gs_free_error GError *cancelled_error = NULL; - gs_free_error GError * error = NULL; - NMPlatformAsyncCallback callback; - gpointer callback_data; - - nm_utils_user_data_unpack(user_data, &platform, &callback, &callback_data, &error); - g_cancellable_set_error_if_cancelled(cancellable, &cancelled_error); - callback(cancelled_error ?: error, callback_data); -} - -static void -sysctl_set_async(NMPlatform * platform, - const char * pathid, - int dirfd, - const char * path, - const char *const * values, - NMPlatformAsyncCallback callback, - gpointer data, - GCancellable * cancellable) -{ - SysctlAsyncInfo *info; - GTask * task; - int dirfd_dup, errsv; - gpointer packed; - GError * error = NULL; - - g_return_if_fail(platform); - g_return_if_fail(path); - g_return_if_fail(values && values[0]); - g_return_if_fail(cancellable); - g_return_if_fail(!data || callback); - - ASSERT_SYSCTL_ARGS(pathid, dirfd, path); - - if (dirfd >= 0) { - dirfd_dup = fcntl(dirfd, F_DUPFD_CLOEXEC, 0); - if (dirfd_dup < 0) { - if (!callback) - return; - errsv = errno; - g_set_error(&error, - NM_UTILS_ERROR, - NM_UTILS_ERROR_UNKNOWN, - "sysctl: failure duplicating directory fd: %s", - nm_strerror_native(errsv)); - packed = nm_utils_user_data_pack(g_object_ref(platform), callback, data, error); - nm_utils_invoke_on_idle(cancellable, sysctl_set_async_return_idle, packed); - return; - } - } else - dirfd_dup = -1; - - info = g_slice_new0(SysctlAsyncInfo); - info->platform = g_object_ref(platform); - info->pathid = g_strdup(pathid); - info->dirfd = dirfd_dup; - info->path = g_strdup(path); - info->values = g_strdupv((char **) values); - info->callback = callback; - info->callback_data = data; - info->cancellable = g_object_ref(cancellable); - - task = g_task_new(platform, cancellable, sysctl_async_cb, NULL); - g_task_set_task_data(task, info, (GDestroyNotify) sysctl_async_info_free); - g_task_set_return_on_cancel(task, FALSE); - g_task_run_in_thread(task, sysctl_async_thread_fn); - g_object_unref(task); -} - -static GSList *sysctl_clear_cache_list; - -void -_nm_logging_clear_platform_logging_cache(void) -{ - while (sysctl_clear_cache_list) { - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(sysctl_clear_cache_list->data); - - sysctl_clear_cache_list = - g_slist_delete_link(sysctl_clear_cache_list, sysctl_clear_cache_list); - - g_hash_table_destroy(priv->sysctl_get_prev_values); - priv->sysctl_get_prev_values = NULL; - } -} - -typedef struct { - const char *path; - CList lst; - char * value; - char path_data[]; -} SysctlCacheEntry; - -static void -sysctl_cache_entry_free(SysctlCacheEntry *entry) -{ - c_list_unlink_stale(&entry->lst); - g_free(entry->value); - g_free(entry); -} - -static void -_log_dbg_sysctl_get_impl(NMPlatform *platform, const char *pathid, const char *contents) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - SysctlCacheEntry * entry = NULL; - - if (!priv->sysctl_get_prev_values) { - sysctl_clear_cache_list = g_slist_prepend(sysctl_clear_cache_list, platform); - c_list_init(&priv->sysctl_list); - priv->sysctl_get_prev_values = - g_hash_table_new_full(nm_pstr_hash, - nm_pstr_equal, - (GDestroyNotify) sysctl_cache_entry_free, - NULL); - } else - entry = g_hash_table_lookup(priv->sysctl_get_prev_values, &pathid); - - if (entry) { - if (!nm_streq(entry->value, contents)) { - gs_free char *contents_escaped = g_strescape(contents, NULL); - gs_free char *prev_value_escaped = g_strescape(entry->value, NULL); - - _LOGD("sysctl: reading '%s': '%s' (changed from '%s' on last read)", - pathid, - contents_escaped, - prev_value_escaped); - g_free(entry->value); - entry->value = g_strdup(contents); - } - nm_c_list_move_front(&priv->sysctl_list, &entry->lst); - } else { - gs_free char * contents_escaped = g_strescape(contents, NULL); - SysctlCacheEntry *old; - size_t len; - - len = strlen(pathid); - entry = g_malloc(sizeof(SysctlCacheEntry) + len + 1); - entry->value = g_strdup(contents); - entry->path = entry->path_data; - memcpy(entry->path_data, pathid, len + 1); - - /* Remove oldest entry when the cache becomes too big */ - if (g_hash_table_size(priv->sysctl_get_prev_values) > 1000) { - old = c_list_last_entry(&priv->sysctl_list, SysctlCacheEntry, lst); - g_hash_table_remove(priv->sysctl_get_prev_values, old); - } - - _LOGD("sysctl: reading '%s': '%s'", pathid, contents_escaped); - - g_hash_table_add(priv->sysctl_get_prev_values, entry); - c_list_link_front(&priv->sysctl_list, &entry->lst); - } -} - -#define _log_dbg_sysctl_get(platform, pathid, contents) \ - G_STMT_START \ - { \ - if (_LOGD_ENABLED()) \ - _log_dbg_sysctl_get_impl(platform, pathid, contents); \ - } \ - G_STMT_END - -static char * -sysctl_get(NMPlatform *platform, const char *pathid, int dirfd, const char *path) -{ - nm_auto_pop_netns NMPNetns *netns = NULL; - GError * error = NULL; - gs_free char * contents = NULL; - - ASSERT_SYSCTL_ARGS(pathid, dirfd, path); - - if (dirfd < 0) { - if (!nm_platform_netns_push(platform, &netns)) { - errno = EBUSY; - return NULL; - } - pathid = path; - } - - if (!nm_utils_file_get_contents(dirfd, - path, - 1 * 1024 * 1024, - NM_UTILS_FILE_GET_CONTENTS_FLAG_NONE, - &contents, - NULL, - NULL, - &error)) { - NMLogLevel log_level = LOGL_ERR; - int errsv = EBUSY; - - if (g_error_matches(error, G_FILE_ERROR, G_FILE_ERROR_NOENT)) { - errsv = ENOENT; - log_level = LOGL_DEBUG; - } else if (g_error_matches(error, G_FILE_ERROR, G_FILE_ERROR_NODEV) - || g_error_matches(error, G_FILE_ERROR, G_FILE_ERROR_FAILED)) { - /* We assume FAILED means EOPNOTSUP and don't log a error message. */ - log_level = LOGL_DEBUG; - } - - _NMLOG(log_level, "error reading %s: %s", pathid, error->message); - g_clear_error(&error); - errno = errsv; - return NULL; - } - - g_strstrip(contents); - - _log_dbg_sysctl_get(platform, pathid, contents); - - /* errno is left undefined (as we don't return NULL). */ - return g_steal_pointer(&contents); -} - -/*****************************************************************************/ - -static void -process_events(NMPlatform *platform) -{ - delayed_action_handle_all(platform, TRUE); -} - -/*****************************************************************************/ - -static const RefreshAllInfo * -refresh_all_type_get_info(RefreshAllType refresh_all_type) -{ - static const RefreshAllInfo infos[] = { -#define R(_refresh_all_type, _obj_type, _addr_family) \ - [_refresh_all_type] = { \ - .obj_type = _obj_type, \ - .addr_family = _addr_family, \ - } - R(REFRESH_ALL_TYPE_LINKS, NMP_OBJECT_TYPE_LINK, AF_UNSPEC), - R(REFRESH_ALL_TYPE_IP4_ADDRESSES, NMP_OBJECT_TYPE_IP4_ADDRESS, AF_UNSPEC), - R(REFRESH_ALL_TYPE_IP6_ADDRESSES, NMP_OBJECT_TYPE_IP6_ADDRESS, AF_UNSPEC), - R(REFRESH_ALL_TYPE_IP4_ROUTES, NMP_OBJECT_TYPE_IP4_ROUTE, AF_UNSPEC), - R(REFRESH_ALL_TYPE_IP6_ROUTES, NMP_OBJECT_TYPE_IP6_ROUTE, AF_UNSPEC), - R(REFRESH_ALL_TYPE_ROUTING_RULES_IP4, NMP_OBJECT_TYPE_ROUTING_RULE, AF_INET), - R(REFRESH_ALL_TYPE_ROUTING_RULES_IP6, NMP_OBJECT_TYPE_ROUTING_RULE, AF_INET6), - R(REFRESH_ALL_TYPE_QDISCS, NMP_OBJECT_TYPE_QDISC, AF_UNSPEC), - R(REFRESH_ALL_TYPE_TFILTERS, NMP_OBJECT_TYPE_TFILTER, AF_UNSPEC), -#undef R - }; - - nm_assert(_NM_INT_NOT_NEGATIVE(refresh_all_type)); - nm_assert(refresh_all_type < G_N_ELEMENTS(infos)); - nm_assert(nmp_class_from_type(infos[refresh_all_type].obj_type)); - - return &infos[refresh_all_type]; -} - -static NM_UTILS_LOOKUP_DEFINE( - delayed_action_type_to_refresh_all_type, - DelayedActionType, - RefreshAllType, - NM_UTILS_LOOKUP_DEFAULT_NM_ASSERT(0), - NM_UTILS_LOOKUP_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_LINKS, REFRESH_ALL_TYPE_LINKS), - NM_UTILS_LOOKUP_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ADDRESSES, - REFRESH_ALL_TYPE_IP4_ADDRESSES), - NM_UTILS_LOOKUP_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ADDRESSES, - REFRESH_ALL_TYPE_IP6_ADDRESSES), - NM_UTILS_LOOKUP_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ROUTES, REFRESH_ALL_TYPE_IP4_ROUTES), - NM_UTILS_LOOKUP_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ROUTES, REFRESH_ALL_TYPE_IP6_ROUTES), - NM_UTILS_LOOKUP_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_IP4, - REFRESH_ALL_TYPE_ROUTING_RULES_IP4), - NM_UTILS_LOOKUP_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_IP6, - REFRESH_ALL_TYPE_ROUTING_RULES_IP6), - NM_UTILS_LOOKUP_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_QDISCS, REFRESH_ALL_TYPE_QDISCS), - NM_UTILS_LOOKUP_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_TFILTERS, REFRESH_ALL_TYPE_TFILTERS), - NM_UTILS_LOOKUP_ITEM_IGNORE_OTHER(), ); - -static DelayedActionType -delayed_action_type_from_refresh_all_type(RefreshAllType refresh_all_type) -{ - DelayedActionType t; - - nm_assert(refresh_all_type_get_info(refresh_all_type)); - - t = (((DelayedActionType) 1) << refresh_all_type); - - nm_assert(refresh_all_type == delayed_action_type_to_refresh_all_type(t)); - - return t; -} - -static RefreshAllType -refresh_all_type_from_needle_object(const NMPObject *obj_needle) -{ - switch (NMP_OBJECT_GET_TYPE(obj_needle)) { - case NMP_OBJECT_TYPE_LINK: - return REFRESH_ALL_TYPE_LINKS; - case NMP_OBJECT_TYPE_IP4_ADDRESS: - return REFRESH_ALL_TYPE_IP4_ADDRESSES; - case NMP_OBJECT_TYPE_IP6_ADDRESS: - return REFRESH_ALL_TYPE_IP6_ADDRESSES; - case NMP_OBJECT_TYPE_IP4_ROUTE: - return REFRESH_ALL_TYPE_IP4_ROUTES; - case NMP_OBJECT_TYPE_IP6_ROUTE: - return REFRESH_ALL_TYPE_IP6_ROUTES; - case NMP_OBJECT_TYPE_QDISC: - return REFRESH_ALL_TYPE_QDISCS; - case NMP_OBJECT_TYPE_TFILTER: - return REFRESH_ALL_TYPE_TFILTERS; - case NMP_OBJECT_TYPE_ROUTING_RULE: - switch (NMP_OBJECT_CAST_ROUTING_RULE(obj_needle)->addr_family) { - case AF_INET: - return REFRESH_ALL_TYPE_ROUTING_RULES_IP4; - case AF_INET6: - return REFRESH_ALL_TYPE_ROUTING_RULES_IP6; - } - nm_assert_not_reached(); - return 0; - default: - nm_assert_not_reached(); - return 0; - } -} - -static const NMPLookup * -refresh_all_type_init_lookup(RefreshAllType refresh_all_type, NMPLookup *lookup) -{ - const RefreshAllInfo *refresh_all_info; - - nm_assert(lookup); - - refresh_all_info = refresh_all_type_get_info(refresh_all_type); - - nm_assert(refresh_all_info); - - if (NM_IN_SET(refresh_all_info->obj_type, NMP_OBJECT_TYPE_ROUTING_RULE)) { - return nmp_lookup_init_object_by_addr_family(lookup, - refresh_all_info->obj_type, - refresh_all_info->addr_family); - } - - /* not yet implemented. */ - nm_assert(refresh_all_info->addr_family == AF_UNSPEC); - - return nmp_lookup_init_obj_type(lookup, refresh_all_info->obj_type); -} - -static DelayedActionType -delayed_action_refresh_from_needle_object(const NMPObject *obj_needle) -{ - return delayed_action_type_from_refresh_all_type( - refresh_all_type_from_needle_object(obj_needle)); -} - -static NM_UTILS_LOOKUP_STR_DEFINE( - delayed_action_to_string, - DelayedActionType, - NM_UTILS_LOOKUP_DEFAULT_NM_ASSERT("unknown"), - NM_UTILS_LOOKUP_STR_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_LINKS, "refresh-all-links"), - NM_UTILS_LOOKUP_STR_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ADDRESSES, - "refresh-all-ip4-addresses"), - NM_UTILS_LOOKUP_STR_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ADDRESSES, - "refresh-all-ip6-addresses"), - NM_UTILS_LOOKUP_STR_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ROUTES, "refresh-all-ip4-routes"), - NM_UTILS_LOOKUP_STR_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ROUTES, "refresh-all-ip6-routes"), - NM_UTILS_LOOKUP_STR_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_IP4, - "refresh-all-routing-rules-ip4"), - NM_UTILS_LOOKUP_STR_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_IP6, - "refresh-all-routing-rules-ip6"), - NM_UTILS_LOOKUP_STR_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_QDISCS, "refresh-all-qdiscs"), - NM_UTILS_LOOKUP_STR_ITEM(DELAYED_ACTION_TYPE_REFRESH_ALL_TFILTERS, "refresh-all-tfilters"), - NM_UTILS_LOOKUP_STR_ITEM(DELAYED_ACTION_TYPE_REFRESH_LINK, "refresh-link"), - NM_UTILS_LOOKUP_STR_ITEM(DELAYED_ACTION_TYPE_MASTER_CONNECTED, "master-connected"), - NM_UTILS_LOOKUP_STR_ITEM(DELAYED_ACTION_TYPE_READ_NETLINK, "read-netlink"), - NM_UTILS_LOOKUP_STR_ITEM(DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE, "wait-for-nl-response"), - NM_UTILS_LOOKUP_ITEM_IGNORE(DELAYED_ACTION_TYPE_NONE), - NM_UTILS_LOOKUP_ITEM_IGNORE(DELAYED_ACTION_TYPE_REFRESH_ALL), - NM_UTILS_LOOKUP_ITEM_IGNORE(DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_ALL), - NM_UTILS_LOOKUP_ITEM_IGNORE(__DELAYED_ACTION_TYPE_MAX), ); - -static const char * -delayed_action_to_string_full(DelayedActionType action_type, - gpointer user_data, - char * buf, - gsize buf_size) -{ - char * buf0 = buf; - const DelayedActionWaitForNlResponseData *data; - - nm_utils_strbuf_append_str(&buf, &buf_size, delayed_action_to_string(action_type)); - switch (action_type) { - case DELAYED_ACTION_TYPE_MASTER_CONNECTED: - nm_utils_strbuf_append(&buf, &buf_size, " (master-ifindex %d)", GPOINTER_TO_INT(user_data)); - break; - case DELAYED_ACTION_TYPE_REFRESH_LINK: - nm_utils_strbuf_append(&buf, &buf_size, " (ifindex %d)", GPOINTER_TO_INT(user_data)); - break; - case DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE: - data = user_data; - - if (data) { - gint64 timeout = data->timeout_abs_ns - nm_utils_get_monotonic_timestamp_nsec(); - char b[255]; - - nm_utils_strbuf_append( - &buf, - &buf_size, - " (seq %u, timeout in %s%" G_GINT64_FORMAT ".%09" G_GINT64_FORMAT - ", response-type %d%s%s)", - data->seq_number, - timeout < 0 ? "-" : "", - (timeout < 0 ? -timeout : timeout) / NM_UTILS_NSEC_PER_SEC, - (timeout < 0 ? -timeout : timeout) % NM_UTILS_NSEC_PER_SEC, - (int) data->response_type, - data->seq_result ? ", " : "", - data->seq_result - ? wait_for_nl_response_to_string(data->seq_result, NULL, b, sizeof(b)) - : ""); - } else - nm_utils_strbuf_append_str(&buf, &buf_size, " (any)"); - break; - default: - nm_assert(!user_data); - break; - } - return buf0; -} - -#define _LOGt_delayed_action(action_type, user_data, operation) \ - G_STMT_START \ - { \ - char _buf[255]; \ - \ - _LOGt("delayed-action: %s %s", \ - "" operation, \ - delayed_action_to_string_full(action_type, user_data, _buf, sizeof(_buf))); \ - } \ - G_STMT_END - -/*****************************************************************************/ - -static gboolean -delayed_action_refresh_all_in_progress(NMPlatform *platform, DelayedActionType action_type) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - RefreshAllType refresh_all_type; - - nm_assert(nm_utils_is_power_of_two(action_type)); - nm_assert(NM_FLAGS_ANY(action_type, DELAYED_ACTION_TYPE_REFRESH_ALL)); - nm_assert(!NM_FLAGS_ANY(action_type, ~DELAYED_ACTION_TYPE_REFRESH_ALL)); - - if (NM_FLAGS_ANY(priv->delayed_action.flags, action_type)) - return TRUE; - - refresh_all_type = delayed_action_type_to_refresh_all_type(action_type); - return (priv->delayed_action.refresh_all_in_progress[refresh_all_type] > 0); -} - -static void -delayed_action_wait_for_nl_response_complete(NMPlatform * platform, - guint idx, - WaitForNlResponseResult seq_result) -{ - NMLinuxPlatformPrivate * priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - DelayedActionWaitForNlResponseData *data; - - nm_assert(NM_FLAGS_HAS(priv->delayed_action.flags, DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE)); - nm_assert(idx < priv->delayed_action.list_wait_for_nl_response->len); - nm_assert(seq_result); - - data = &g_array_index(priv->delayed_action.list_wait_for_nl_response, - DelayedActionWaitForNlResponseData, - idx); - - _LOGt_delayed_action(DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE, data, "complete"); - - if (priv->delayed_action.list_wait_for_nl_response->len <= 1) - priv->delayed_action.flags &= ~DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE; - if (data->out_seq_result) - *data->out_seq_result = seq_result; - switch (data->response_type) { - case DELAYED_ACTION_RESPONSE_TYPE_VOID: - break; - case DELAYED_ACTION_RESPONSE_TYPE_REFRESH_ALL_IN_PROGRESS: - if (data->response.out_refresh_all_in_progress) { - nm_assert(*data->response.out_refresh_all_in_progress > 0); - *data->response.out_refresh_all_in_progress -= 1; - data->response.out_refresh_all_in_progress = NULL; - } - break; - case DELAYED_ACTION_RESPONSE_TYPE_ROUTE_GET: - if (data->response.out_route_get) { - nm_assert(!*data->response.out_route_get); - data->response.out_route_get = NULL; - } - break; - } - - g_array_remove_index_fast(priv->delayed_action.list_wait_for_nl_response, idx); -} - -static void -delayed_action_wait_for_nl_response_complete_check(NMPlatform * platform, - WaitForNlResponseResult force_result, - guint32 * out_next_seq_number, - gint64 * out_next_timeout_abs_ns, - gint64 * p_now_ns) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - guint i; - guint32 next_seq_number = 0; - gint64 next_timeout_abs_ns = 0; - int now_ns = 0; - - for (i = 0; i < priv->delayed_action.list_wait_for_nl_response->len;) { - const DelayedActionWaitForNlResponseData *data = - &g_array_index(priv->delayed_action.list_wait_for_nl_response, - DelayedActionWaitForNlResponseData, - i); - - if (data->seq_result) - delayed_action_wait_for_nl_response_complete(platform, i, data->seq_result); - else if (p_now_ns - && ((now_ns ?: (now_ns = nm_utils_get_monotonic_timestamp_nsec())) - >= data->timeout_abs_ns)) { - /* the caller can optionally check for timeout by providing a p_now_ns argument. */ - delayed_action_wait_for_nl_response_complete( - platform, - i, - WAIT_FOR_NL_RESPONSE_RESULT_FAILED_TIMEOUT); - } else if (force_result != WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN) - delayed_action_wait_for_nl_response_complete(platform, i, force_result); - else { - if (next_seq_number == 0 || next_timeout_abs_ns > data->timeout_abs_ns) { - next_seq_number = data->seq_number; - next_timeout_abs_ns = data->timeout_abs_ns; - } - i++; - } - } - - if (force_result != WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN) { - nm_assert( - !NM_FLAGS_HAS(priv->delayed_action.flags, DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE)); - nm_assert(priv->delayed_action.list_wait_for_nl_response->len == 0); - } - - NM_SET_OUT(out_next_seq_number, next_seq_number); - NM_SET_OUT(out_next_timeout_abs_ns, next_timeout_abs_ns); - NM_SET_OUT(p_now_ns, now_ns); -} - -static void -delayed_action_wait_for_nl_response_complete_all(NMPlatform * platform, - WaitForNlResponseResult fallback_result) -{ - delayed_action_wait_for_nl_response_complete_check(platform, fallback_result, NULL, NULL, NULL); -} - -/*****************************************************************************/ - -static void -delayed_action_handle_MASTER_CONNECTED(NMPlatform *platform, int master_ifindex) -{ - nm_auto_nmpobj const NMPObject *obj_old = NULL; - nm_auto_nmpobj const NMPObject *obj_new = NULL; - NMPCacheOpsType cache_op; - - cache_op = nmp_cache_update_link_master_connected(nm_platform_get_cache(platform), - master_ifindex, - &obj_old, - &obj_new); - if (cache_op == NMP_CACHE_OPS_UNCHANGED) - return; - cache_on_change(platform, cache_op, obj_old, obj_new); - nm_platform_cache_update_emit_signal(platform, cache_op, obj_old, obj_new); -} - -static void -delayed_action_handle_REFRESH_LINK(NMPlatform *platform, int ifindex) -{ - do_request_link_no_delayed_actions(platform, ifindex, NULL); -} - -static void -delayed_action_handle_REFRESH_ALL(NMPlatform *platform, DelayedActionType flags) -{ - do_request_all_no_delayed_actions(platform, flags); -} - -static void -delayed_action_handle_READ_NETLINK(NMPlatform *platform) -{ - event_handler_read_netlink(platform, FALSE); -} - -static void -delayed_action_handle_WAIT_FOR_NL_RESPONSE(NMPlatform *platform) -{ - event_handler_read_netlink(platform, TRUE); -} - -static gboolean -delayed_action_handle_one(NMPlatform *platform) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - gpointer user_data; - - if (priv->delayed_action.flags == DELAYED_ACTION_TYPE_NONE) - return FALSE; - - /* First process DELAYED_ACTION_TYPE_MASTER_CONNECTED actions. - * This type of action is entirely cache-internal and is here to resolve a - * cache inconsistency. It should be fixed right away. */ - if (NM_FLAGS_HAS(priv->delayed_action.flags, DELAYED_ACTION_TYPE_MASTER_CONNECTED)) { - nm_assert(priv->delayed_action.list_master_connected->len > 0); - - user_data = priv->delayed_action.list_master_connected->pdata[0]; - g_ptr_array_remove_index_fast(priv->delayed_action.list_master_connected, 0); - if (priv->delayed_action.list_master_connected->len == 0) - priv->delayed_action.flags &= ~DELAYED_ACTION_TYPE_MASTER_CONNECTED; - nm_assert(_nm_utils_ptrarray_find_first( - (gconstpointer *) priv->delayed_action.list_master_connected->pdata, - priv->delayed_action.list_master_connected->len, - user_data) - < 0); - - _LOGt_delayed_action(DELAYED_ACTION_TYPE_MASTER_CONNECTED, user_data, "handle"); - delayed_action_handle_MASTER_CONNECTED(platform, GPOINTER_TO_INT(user_data)); - return TRUE; - } - nm_assert(priv->delayed_action.list_master_connected->len == 0); - - /* Next we prefer read-netlink, because the buffer size is limited and we want to process events - * from netlink early. */ - if (NM_FLAGS_HAS(priv->delayed_action.flags, DELAYED_ACTION_TYPE_READ_NETLINK)) { - _LOGt_delayed_action(DELAYED_ACTION_TYPE_READ_NETLINK, NULL, "handle"); - priv->delayed_action.flags &= ~DELAYED_ACTION_TYPE_READ_NETLINK; - delayed_action_handle_READ_NETLINK(platform); - return TRUE; - } - - if (NM_FLAGS_ANY(priv->delayed_action.flags, DELAYED_ACTION_TYPE_REFRESH_ALL)) { - DelayedActionType flags, iflags; - - flags = priv->delayed_action.flags & DELAYED_ACTION_TYPE_REFRESH_ALL; - - priv->delayed_action.flags &= ~DELAYED_ACTION_TYPE_REFRESH_ALL; - - if (_LOGt_ENABLED()) { - FOR_EACH_DELAYED_ACTION(iflags, flags) - _LOGt_delayed_action(iflags, NULL, "handle"); - } - - delayed_action_handle_REFRESH_ALL(platform, flags); - return TRUE; - } - - if (NM_FLAGS_HAS(priv->delayed_action.flags, DELAYED_ACTION_TYPE_REFRESH_LINK)) { - nm_assert(priv->delayed_action.list_refresh_link->len > 0); - - user_data = priv->delayed_action.list_refresh_link->pdata[0]; - g_ptr_array_remove_index_fast(priv->delayed_action.list_refresh_link, 0); - if (priv->delayed_action.list_refresh_link->len == 0) - priv->delayed_action.flags &= ~DELAYED_ACTION_TYPE_REFRESH_LINK; - nm_assert(_nm_utils_ptrarray_find_first( - (gconstpointer *) priv->delayed_action.list_refresh_link->pdata, - priv->delayed_action.list_refresh_link->len, - user_data) - < 0); - - _LOGt_delayed_action(DELAYED_ACTION_TYPE_REFRESH_LINK, user_data, "handle"); - - delayed_action_handle_REFRESH_LINK(platform, GPOINTER_TO_INT(user_data)); - - return TRUE; - } - - if (NM_FLAGS_HAS(priv->delayed_action.flags, DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE)) { - nm_assert(priv->delayed_action.list_wait_for_nl_response->len > 0); - _LOGt_delayed_action(DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE, NULL, "handle"); - delayed_action_handle_WAIT_FOR_NL_RESPONSE(platform); - return TRUE; - } - - return FALSE; -} - -static gboolean -delayed_action_handle_all(NMPlatform *platform, gboolean read_netlink) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - gboolean any = FALSE; - - g_return_val_if_fail(priv->delayed_action.is_handling == 0, FALSE); - - priv->delayed_action.is_handling++; - if (read_netlink) - delayed_action_schedule(platform, DELAYED_ACTION_TYPE_READ_NETLINK, NULL); - while (delayed_action_handle_one(platform)) - any = TRUE; - priv->delayed_action.is_handling--; - - cache_prune_all(platform); - - return any; -} - -static void -delayed_action_schedule(NMPlatform *platform, DelayedActionType action_type, gpointer user_data) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - DelayedActionType iflags; - - nm_assert(action_type != DELAYED_ACTION_TYPE_NONE); - - switch (action_type) { - case DELAYED_ACTION_TYPE_REFRESH_LINK: - if (_nm_utils_ptrarray_find_first( - (gconstpointer *) priv->delayed_action.list_refresh_link->pdata, - priv->delayed_action.list_refresh_link->len, - user_data) - < 0) - g_ptr_array_add(priv->delayed_action.list_refresh_link, user_data); - break; - case DELAYED_ACTION_TYPE_MASTER_CONNECTED: - if (_nm_utils_ptrarray_find_first( - (gconstpointer *) priv->delayed_action.list_master_connected->pdata, - priv->delayed_action.list_master_connected->len, - user_data) - < 0) - g_ptr_array_add(priv->delayed_action.list_master_connected, user_data); - break; - case DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE: - g_array_append_vals(priv->delayed_action.list_wait_for_nl_response, user_data, 1); - break; - default: - nm_assert(!user_data); - nm_assert(!NM_FLAGS_HAS(action_type, DELAYED_ACTION_TYPE_REFRESH_LINK)); - nm_assert(!NM_FLAGS_HAS(action_type, DELAYED_ACTION_TYPE_MASTER_CONNECTED)); - nm_assert(!NM_FLAGS_HAS(action_type, DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE)); - break; - } - - priv->delayed_action.flags |= action_type; - - if (_LOGt_ENABLED()) { - FOR_EACH_DELAYED_ACTION(iflags, action_type) - _LOGt_delayed_action(iflags, user_data, "schedule"); - } -} - -static void -delayed_action_schedule_WAIT_FOR_NL_RESPONSE(NMPlatform * platform, - guint32 seq_number, - WaitForNlResponseResult * out_seq_result, - char ** out_errmsg, - DelayedActionWaitForNlResponseType response_type, - gpointer response_out_data) -{ - DelayedActionWaitForNlResponseData data = { - .seq_number = seq_number, - .timeout_abs_ns = - nm_utils_get_monotonic_timestamp_nsec() + (200 * (NM_UTILS_NSEC_PER_SEC / 1000)), - .out_seq_result = out_seq_result, - .out_errmsg = out_errmsg, - .response_type = response_type, - .response.out_data = response_out_data, - }; - - delayed_action_schedule(platform, DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE, &data); -} - -/*****************************************************************************/ - -static void -cache_prune_one_type(NMPlatform *platform, const NMPLookup *lookup) -{ - NMDedupMultiIter iter; - const NMPObject *obj; - NMPCacheOpsType cache_op; - NMPCache * cache = nm_platform_get_cache(platform); - - nm_dedup_multi_iter_init(&iter, nmp_cache_lookup(cache, lookup)); - while (nm_dedup_multi_iter_next(&iter)) { - const NMDedupMultiEntry *main_entry; - - /* we only track the dirty flag for the OBJECT-TYPE index. That means, - * for other lookup types we need to check the dirty flag of the main-entry. */ - main_entry = nmp_cache_reresolve_main_entry(cache, iter.current, lookup); - if (!main_entry->dirty) - continue; - - obj = main_entry->obj; - - _LOGt("cache-prune: prune %s", - nmp_object_to_string(obj, NMP_OBJECT_TO_STRING_ALL, NULL, 0)); - - { - nm_auto_nmpobj const NMPObject *obj_old = NULL; - - cache_op = nmp_cache_remove(cache, obj, TRUE, TRUE, &obj_old); - nm_assert(cache_op == NMP_CACHE_OPS_REMOVED); - cache_on_change(platform, cache_op, obj_old, NULL); - nm_platform_cache_update_emit_signal(platform, cache_op, obj_old, NULL); - } - } -} - -static void -cache_prune_all(NMPlatform *platform) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - RefreshAllType refresh_all_type; - - for (refresh_all_type = _REFRESH_ALL_TYPE_FIRST; refresh_all_type < _REFRESH_ALL_TYPE_NUM; - refresh_all_type++) { - NMPLookup lookup; - - if (priv->pruning[refresh_all_type] == 0) - continue; - priv->pruning[refresh_all_type] -= 1; - if (priv->pruning[refresh_all_type] > 0) - continue; - refresh_all_type_init_lookup(refresh_all_type, &lookup); - cache_prune_one_type(platform, &lookup); - } -} - -static void -cache_on_change(NMPlatform * platform, - NMPCacheOpsType cache_op, - const NMPObject *obj_old, - const NMPObject *obj_new) -{ - const NMPClass *klass; - char str_buf[sizeof(_nm_utils_to_string_buffer)]; - char str_buf2[sizeof(_nm_utils_to_string_buffer)]; - NMPCache * cache = nm_platform_get_cache(platform); - - ASSERT_nmp_cache_ops(cache, cache_op, obj_old, obj_new); - nm_assert(cache_op != NMP_CACHE_OPS_UNCHANGED); - - klass = obj_old ? NMP_OBJECT_GET_CLASS(obj_old) : NMP_OBJECT_GET_CLASS(obj_new); - - _LOGt( - "update-cache-%s: %s: %s%s%s", - klass->obj_type_name, - (cache_op == NMP_CACHE_OPS_UPDATED ? "UPDATE" - : (cache_op == NMP_CACHE_OPS_REMOVED ? "REMOVE" - : (cache_op == NMP_CACHE_OPS_ADDED) ? "ADD" - : "???")), - (cache_op != NMP_CACHE_OPS_ADDED - ? nmp_object_to_string(obj_old, NMP_OBJECT_TO_STRING_ALL, str_buf2, sizeof(str_buf2)) - : nmp_object_to_string(obj_new, NMP_OBJECT_TO_STRING_ALL, str_buf2, sizeof(str_buf2))), - (cache_op == NMP_CACHE_OPS_UPDATED) ? " -> " : "", - (cache_op == NMP_CACHE_OPS_UPDATED - ? nmp_object_to_string(obj_new, NMP_OBJECT_TO_STRING_ALL, str_buf, sizeof(str_buf)) - : "")); - - switch (klass->obj_type) { - case NMP_OBJECT_TYPE_LINK: - { - /* check whether changing a slave link can cause a master link (bridge or bond) to go up/down */ - if (obj_old - && nmp_cache_link_connected_needs_toggle_by_ifindex(cache, - obj_old->link.master, - obj_new, - obj_old)) - delayed_action_schedule(platform, - DELAYED_ACTION_TYPE_MASTER_CONNECTED, - GINT_TO_POINTER(obj_old->link.master)); - if (obj_new && (!obj_old || obj_old->link.master != obj_new->link.master) - && nmp_cache_link_connected_needs_toggle_by_ifindex(cache, - obj_new->link.master, - obj_new, - obj_old)) - delayed_action_schedule(platform, - DELAYED_ACTION_TYPE_MASTER_CONNECTED, - GINT_TO_POINTER(obj_new->link.master)); - } - { - /* check whether we are about to change a master link that needs toggling connected state. */ - if (obj_new /* <-- nonsensical, make coverity happy */ - && nmp_cache_link_connected_needs_toggle(cache, obj_new, obj_new, obj_old)) - delayed_action_schedule(platform, - DELAYED_ACTION_TYPE_MASTER_CONNECTED, - GINT_TO_POINTER(obj_new->link.ifindex)); - } - { - int ifindex = 0; - - /* if we remove a link (from netlink), we must refresh the addresses, routes, qdiscs and tfilters */ - if (cache_op == NMP_CACHE_OPS_REMOVED - && obj_old /* <-- nonsensical, make coverity happy */) - ifindex = obj_old->link.ifindex; - else if (cache_op == NMP_CACHE_OPS_UPDATED && obj_old - && obj_new /* <-- nonsensical, make coverity happy */ - && !obj_new->_link.netlink.is_in_netlink - && obj_new->_link.netlink.is_in_netlink - != obj_old->_link.netlink.is_in_netlink) - ifindex = obj_new->link.ifindex; - - if (ifindex > 0) { - delayed_action_schedule(platform, - DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ADDRESSES - | DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ADDRESSES - | DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ROUTES - | DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ROUTES - | DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_ALL - | DELAYED_ACTION_TYPE_REFRESH_ALL_QDISCS - | DELAYED_ACTION_TYPE_REFRESH_ALL_TFILTERS, - NULL); - } - } - { - int ifindex = -1; - - /* removal of a link could be caused by moving the link to another netns. - * In this case, we potentially have to update other links that have this link as parent. - * Currently, kernel misses to sent us a notification in this case - * (https://bugzilla.redhat.com/show_bug.cgi?id=1262908). */ - - if (cache_op == NMP_CACHE_OPS_REMOVED - && obj_old /* <-- nonsensical, make coverity happy */ - && obj_old->_link.netlink.is_in_netlink) - ifindex = obj_old->link.ifindex; - else if (cache_op == NMP_CACHE_OPS_UPDATED && obj_old - && obj_new /* <-- nonsensical, make coverity happy */ - && obj_old->_link.netlink.is_in_netlink - && !obj_new->_link.netlink.is_in_netlink) - ifindex = obj_new->link.ifindex; - - if (ifindex > 0) { - NMPLookup lookup; - NMDedupMultiIter iter; - const NMPlatformLink *l; - - nmp_lookup_init_obj_type(&lookup, NMP_OBJECT_TYPE_LINK); - nmp_cache_iter_for_each_link (&iter, nmp_cache_lookup(cache, &lookup), &l) { - if (l->parent == ifindex) - delayed_action_schedule(platform, - DELAYED_ACTION_TYPE_REFRESH_LINK, - GINT_TO_POINTER(l->ifindex)); - } - } - } - { - /* if a link goes down, we must refresh routes */ - if (cache_op == NMP_CACHE_OPS_UPDATED && obj_old - && obj_new /* <-- nonsensical, make coverity happy */ - && obj_old->_link.netlink.is_in_netlink && obj_new->_link.netlink.is_in_netlink - && ((NM_FLAGS_HAS(obj_old->link.n_ifi_flags, IFF_UP) - && !NM_FLAGS_HAS(obj_new->link.n_ifi_flags, IFF_UP)) - || (NM_FLAGS_HAS(obj_old->link.n_ifi_flags, IFF_LOWER_UP) - && !NM_FLAGS_HAS(obj_new->link.n_ifi_flags, IFF_LOWER_UP)))) { - /* FIXME: I suspect that IFF_LOWER_UP must not be considered, and I - * think kernel does send RTM_DELROUTE events for IPv6 routes, so - * we might not need to refresh IPv6 routes. */ - delayed_action_schedule(platform, - DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ROUTES - | DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ROUTES, - NULL); - } - } - if (NM_IN_SET(cache_op, NMP_CACHE_OPS_ADDED, NMP_CACHE_OPS_UPDATED) - && (obj_new && obj_new->_link.netlink.is_in_netlink) - && (!obj_old || !obj_old->_link.netlink.is_in_netlink)) { - gboolean re_request_link = FALSE; - const NMPlatformLnkTun *lnk_tun; - - if (!obj_new->_link.netlink.lnk - && NM_IN_SET(obj_new->link.type, - NM_LINK_TYPE_GRE, - NM_LINK_TYPE_GRETAP, - NM_LINK_TYPE_IP6TNL, - NM_LINK_TYPE_IP6GRE, - NM_LINK_TYPE_IP6GRETAP, - NM_LINK_TYPE_INFINIBAND, - NM_LINK_TYPE_MACVLAN, - NM_LINK_TYPE_MACVLAN, - NM_LINK_TYPE_SIT, - NM_LINK_TYPE_TUN, - NM_LINK_TYPE_VLAN, - NM_LINK_TYPE_VXLAN)) { - /* certain link-types also come with a IFLA_INFO_DATA/lnk_data. It may happen that - * kernel didn't send this notification, thus when we first learn about a link - * that lacks an lnk_data we re-request it again. - * - * For example https://bugzilla.redhat.com/show_bug.cgi?id=1284001 */ - re_request_link = TRUE; - } else if (obj_new->link.type == NM_LINK_TYPE_TUN && obj_new->_link.netlink.lnk - && (lnk_tun = &(obj_new->_link.netlink.lnk)->lnk_tun) && !lnk_tun->persist - && lnk_tun->pi && !lnk_tun->vnet_hdr && !lnk_tun->multi_queue - && !lnk_tun->owner_valid && !lnk_tun->group_valid) { - /* kernel has/had a know issue that the first notification for TUN device would - * be sent with invalid parameters. The message looks like that kind, so refetch - * it. */ - re_request_link = TRUE; - } else if (obj_new->link.type == NM_LINK_TYPE_VETH && obj_new->link.parent == 0) { - /* the initial notification when adding a veth pair can lack the parent/IFLA_LINK - * (https://bugzilla.redhat.com/show_bug.cgi?id=1285827). - * Request it again. */ - re_request_link = TRUE; - } else if (obj_new->link.type == NM_LINK_TYPE_ETHERNET - && obj_new->link.l_address.len == 0) { - /* Due to a kernel bug, we sometimes receive spurious NEWLINK - * messages after a wifi interface has disappeared. Since the - * link is not present anymore we can't determine its type and - * thus it will show up as a Ethernet one, with no address - * specified. Request the link again to check if it really - * exists. https://bugzilla.redhat.com/show_bug.cgi?id=1302037 - */ - re_request_link = TRUE; - } - if (re_request_link) { - delayed_action_schedule(platform, - DELAYED_ACTION_TYPE_REFRESH_LINK, - GINT_TO_POINTER(obj_new->link.ifindex)); - } - } - { - /* on enslave/release, we also refresh the master. */ - int ifindex1 = 0, ifindex2 = 0; - gboolean changed_master, changed_connected; - - changed_master = - (obj_new && obj_new->_link.netlink.is_in_netlink && obj_new->link.master > 0 - ? obj_new->link.master - : 0) - != (obj_old && obj_old->_link.netlink.is_in_netlink && obj_old->link.master > 0 - ? obj_old->link.master - : 0); - changed_connected = (obj_new && obj_new->_link.netlink.is_in_netlink - ? NM_FLAGS_HAS(obj_new->link.n_ifi_flags, IFF_LOWER_UP) - : 2) - != (obj_old && obj_old->_link.netlink.is_in_netlink - ? NM_FLAGS_HAS(obj_old->link.n_ifi_flags, IFF_LOWER_UP) - : 2); - - if (changed_master || changed_connected) { - ifindex1 = - (obj_old && obj_old->_link.netlink.is_in_netlink && obj_old->link.master > 0) - ? obj_old->link.master - : 0; - ifindex2 = - (obj_new && obj_new->_link.netlink.is_in_netlink && obj_new->link.master > 0) - ? obj_new->link.master - : 0; - - if (ifindex1 > 0) - delayed_action_schedule(platform, - DELAYED_ACTION_TYPE_REFRESH_LINK, - GINT_TO_POINTER(ifindex1)); - if (ifindex2 > 0 && ifindex1 != ifindex2) - delayed_action_schedule(platform, - DELAYED_ACTION_TYPE_REFRESH_LINK, - GINT_TO_POINTER(ifindex2)); - } - } - break; - case NMP_OBJECT_TYPE_IP4_ADDRESS: - case NMP_OBJECT_TYPE_IP6_ADDRESS: - { - /* Address deletion is sometimes accompanied by route deletion. We need to - * check all routes belonging to the same interface. */ - if (cache_op == NMP_CACHE_OPS_REMOVED) { - delayed_action_schedule(platform, - (klass->obj_type == NMP_OBJECT_TYPE_IP4_ADDRESS) - ? DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ROUTES - : DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ROUTES, - NULL); - } - } break; - default: - break; - } -} - -/*****************************************************************************/ - -static guint32 -_nlh_seq_next_get(NMLinuxPlatformPrivate *priv) -{ - /* generate a new sequence number, but never return zero. - * Wrapping numbers are not a problem, because we don't rely - * on strictly increasing sequence numbers. */ - return (++priv->nlh_seq_next) ?: (++priv->nlh_seq_next); -} - -/** - * _nl_send_nlmsghdr: - * @platform: - * @nlhdr: - * @out_seq_result: - * @response_type: - * @response_out_data: - * - * Returns: 0 on success or a negative errno. - */ -static int -_nl_send_nlmsghdr(NMPlatform * platform, - struct nlmsghdr * nlhdr, - WaitForNlResponseResult * out_seq_result, - char ** out_errmsg, - DelayedActionWaitForNlResponseType response_type, - gpointer response_out_data) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - guint32 seq; - int errsv; - - nm_assert(nlhdr); - - seq = _nlh_seq_next_get(priv); - nlhdr->nlmsg_seq = seq; - - { - struct sockaddr_nl nladdr = { - .nl_family = AF_NETLINK, - }; - struct iovec iov = {.iov_base = nlhdr, .iov_len = nlhdr->nlmsg_len}; - struct msghdr msg = { - .msg_name = &nladdr, - .msg_namelen = sizeof(nladdr), - .msg_iov = &iov, - .msg_iovlen = 1, - }; - int try_count; - - if (!nlhdr->nlmsg_pid) - nlhdr->nlmsg_pid = nl_socket_get_local_port(priv->nlh); - nlhdr->nlmsg_flags |= (NLM_F_REQUEST | NLM_F_ACK); - - try_count = 0; -again: - errsv = sendmsg(nl_socket_get_fd(priv->nlh), &msg, 0); - if (errsv < 0) { - errsv = errno; - if (errsv == EINTR && try_count++ < 100) - goto again; - _LOGD("netlink: nl-send-nlmsghdr: failed sending message: %s (%d)", - nm_strerror_native(errsv), - errsv); - return -nm_errno_from_native(errsv); - } - } - - delayed_action_schedule_WAIT_FOR_NL_RESPONSE(platform, - seq, - out_seq_result, - out_errmsg, - response_type, - response_out_data); - return 0; -} - -/** - * _nl_send_nlmsg: - * @platform: - * @nlmsg: - * @out_seq_result: - * @response_type: - * @response_out_data: - * - * Returns: 0 on success, or a negative libnl3 error code (beware, it's not an errno). - */ -static int -_nl_send_nlmsg(NMPlatform * platform, - struct nl_msg * nlmsg, - WaitForNlResponseResult * out_seq_result, - char ** out_errmsg, - DelayedActionWaitForNlResponseType response_type, - gpointer response_out_data) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - struct nlmsghdr * nlhdr; - guint32 seq; - int nle; - - nlhdr = nlmsg_hdr(nlmsg); - seq = _nlh_seq_next_get(priv); - nlhdr->nlmsg_seq = seq; - - nle = nl_send_auto(priv->nlh, nlmsg); - if (nle < 0) { - _LOGD("netlink: nl-send-nlmsg: failed sending message: %s (%d)", nm_strerror(nle), nle); - return nle; - } - - delayed_action_schedule_WAIT_FOR_NL_RESPONSE(platform, - seq, - out_seq_result, - out_errmsg, - response_type, - response_out_data); - return 0; -} - -static void -do_request_link_no_delayed_actions(NMPlatform *platform, int ifindex, const char *name) -{ - NMLinuxPlatformPrivate * priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - int nle; - - if (name && !name[0]) - name = NULL; - - g_return_if_fail(ifindex > 0 || name); - - _LOGD("do-request-link: %d %s", ifindex, name ?: ""); - - if (ifindex > 0) { - const NMDedupMultiEntry *entry; - - entry = nmp_cache_lookup_entry_link(nm_platform_get_cache(platform), ifindex); - if (entry) { - priv->pruning[REFRESH_ALL_TYPE_LINKS] += 1; - nm_dedup_multi_entry_set_dirty(entry, TRUE); - } - } - - event_handler_read_netlink(platform, FALSE); - - nlmsg = _nl_msg_new_link(RTM_GETLINK, 0, ifindex, name); - if (nlmsg) { - nle = _nl_send_nlmsg(platform, nlmsg, NULL, NULL, DELAYED_ACTION_RESPONSE_TYPE_VOID, NULL); - if (nle < 0) { - _LOGE("do-request-link: %d %s: failed sending netlink request \"%s\" (%d)", - ifindex, - name ?: "", - nm_strerror(nle), - -nle); - return; - } - } -} - -static void -do_request_link(NMPlatform *platform, int ifindex, const char *name) -{ - do_request_link_no_delayed_actions(platform, ifindex, name); - delayed_action_handle_all(platform, FALSE); -} - -static struct nl_msg * -_nl_msg_new_dump(NMPObjectType obj_type, int preferred_addr_family) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - const NMPClass * klass; - - klass = nmp_class_from_type(obj_type); - - nm_assert(klass); - nm_assert(klass->rtm_gettype > 0); - - nlmsg = nlmsg_alloc_simple(klass->rtm_gettype, NLM_F_DUMP); - - if (klass->addr_family != AF_UNSPEC) { - /* if the class specifies a particular address family, then it is preferred. */ - nm_assert(NM_IN_SET(preferred_addr_family, AF_UNSPEC, klass->addr_family)); - preferred_addr_family = klass->addr_family; - } - - switch (klass->obj_type) { - case NMP_OBJECT_TYPE_QDISC: - case NMP_OBJECT_TYPE_TFILTER: - { - const struct tcmsg tcmsg = { - .tcm_family = preferred_addr_family, - }; - - if (nlmsg_append_struct(nlmsg, &tcmsg) < 0) - g_return_val_if_reached(NULL); - } break; - case NMP_OBJECT_TYPE_LINK: - case NMP_OBJECT_TYPE_IP4_ADDRESS: - case NMP_OBJECT_TYPE_IP6_ADDRESS: - case NMP_OBJECT_TYPE_IP4_ROUTE: - case NMP_OBJECT_TYPE_IP6_ROUTE: - case NMP_OBJECT_TYPE_ROUTING_RULE: - { - const struct rtgenmsg gmsg = { - .rtgen_family = preferred_addr_family, - }; - - if (nlmsg_append_struct(nlmsg, &gmsg) < 0) - g_return_val_if_reached(NULL); - } break; - default: - g_return_val_if_reached(NULL); - } - - return g_steal_pointer(&nlmsg); -} - -static void -do_request_all_no_delayed_actions(NMPlatform *platform, DelayedActionType action_type) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - DelayedActionType action_type_prune; - DelayedActionType iflags; - - nm_assert(!NM_FLAGS_ANY(action_type, ~DELAYED_ACTION_TYPE_REFRESH_ALL)); - action_type &= DELAYED_ACTION_TYPE_REFRESH_ALL; - - action_type_prune = action_type; - - /* calling nmp_cache_dirty_set_all_main() with a non-main lookup-index requires an extra - * cache lookup for every entry. - * - * Avoid that, by special casing routing-rules here. */ - if (NM_FLAGS_ALL(action_type_prune, DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_ALL)) { - NMPLookup lookup; - - priv->pruning[REFRESH_ALL_TYPE_ROUTING_RULES_IP4] += 1; - priv->pruning[REFRESH_ALL_TYPE_ROUTING_RULES_IP6] += 1; - nmp_lookup_init_obj_type(&lookup, NMP_OBJECT_TYPE_ROUTING_RULE); - nmp_cache_dirty_set_all_main(nm_platform_get_cache(platform), &lookup); - action_type_prune &= ~DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_ALL; - } - - FOR_EACH_DELAYED_ACTION(iflags, action_type_prune) - { - RefreshAllType refresh_all_type = delayed_action_type_to_refresh_all_type(iflags); - NMPLookup lookup; - - priv->pruning[refresh_all_type] += 1; - refresh_all_type_init_lookup(refresh_all_type, &lookup); - nmp_cache_dirty_set_all_main(nm_platform_get_cache(platform), &lookup); - } - - FOR_EACH_DELAYED_ACTION(iflags, action_type) - { - RefreshAllType refresh_all_type = delayed_action_type_to_refresh_all_type(iflags); - const RefreshAllInfo *refresh_all_info = refresh_all_type_get_info(refresh_all_type); - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - int * out_refresh_all_in_progress; - - out_refresh_all_in_progress = - &priv->delayed_action.refresh_all_in_progress[refresh_all_type]; - nm_assert(*out_refresh_all_in_progress >= 0); - *out_refresh_all_in_progress += 1; - - /* clear any delayed action that request a refresh of this object type. */ - priv->delayed_action.flags &= ~iflags; - _LOGt_delayed_action(iflags, NULL, "handle (do-request-all)"); - - if (refresh_all_type == REFRESH_ALL_TYPE_LINKS) { - nm_assert( - (priv->delayed_action.list_refresh_link->len > 0) - == NM_FLAGS_HAS(priv->delayed_action.flags, DELAYED_ACTION_TYPE_REFRESH_LINK)); - if (NM_FLAGS_HAS(priv->delayed_action.flags, DELAYED_ACTION_TYPE_REFRESH_LINK)) { - _LOGt_delayed_action(DELAYED_ACTION_TYPE_REFRESH_LINK, - NULL, - "clear (do-request-all)"); - priv->delayed_action.flags &= ~DELAYED_ACTION_TYPE_REFRESH_LINK; - g_ptr_array_set_size(priv->delayed_action.list_refresh_link, 0); - } - } - - event_handler_read_netlink(platform, FALSE); - - nlmsg = _nl_msg_new_dump(refresh_all_info->obj_type, refresh_all_info->addr_family); - if (!nlmsg) - goto next_after_fail; - - if (_nl_send_nlmsg(platform, - nlmsg, - NULL, - NULL, - DELAYED_ACTION_RESPONSE_TYPE_REFRESH_ALL_IN_PROGRESS, - out_refresh_all_in_progress) - < 0) - goto next_after_fail; - - continue; - -next_after_fail: - nm_assert(*out_refresh_all_in_progress > 0); - *out_refresh_all_in_progress -= 1; - } -} - -static void -do_request_one_type_by_needle_object(NMPlatform *platform, const NMPObject *obj_needle) -{ - do_request_all_no_delayed_actions(platform, - delayed_action_refresh_from_needle_object(obj_needle)); - delayed_action_handle_all(platform, FALSE); -} - -static void -event_seq_check_refresh_all(NMPlatform *platform, guint32 seq_number) -{ - NMLinuxPlatformPrivate * priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - DelayedActionWaitForNlResponseData *data; - guint i; - - if (NM_IN_SET(seq_number, 0, priv->nlh_seq_last_seen)) - return; - - if (NM_FLAGS_HAS(priv->delayed_action.flags, DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE)) { - nm_assert(priv->delayed_action.list_wait_for_nl_response->len > 0); - - for (i = 0; i < priv->delayed_action.list_wait_for_nl_response->len; i++) { - data = &g_array_index(priv->delayed_action.list_wait_for_nl_response, - DelayedActionWaitForNlResponseData, - i); - - if (data->response_type == DELAYED_ACTION_RESPONSE_TYPE_REFRESH_ALL_IN_PROGRESS - && data->response.out_refresh_all_in_progress - && data->seq_number == priv->nlh_seq_last_seen) { - *data->response.out_refresh_all_in_progress -= 1; - data->response.out_refresh_all_in_progress = NULL; - break; - } - } - } - - priv->nlh_seq_last_seen = seq_number; -} - -static void -event_seq_check(NMPlatform * platform, - guint32 seq_number, - WaitForNlResponseResult seq_result, - const char * msg) -{ - NMLinuxPlatformPrivate * priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - DelayedActionWaitForNlResponseData *data; - guint i; - - if (seq_number == 0) - return; - - if (NM_FLAGS_HAS(priv->delayed_action.flags, DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE)) { - nm_assert(priv->delayed_action.list_wait_for_nl_response->len > 0); - - for (i = 0; i < priv->delayed_action.list_wait_for_nl_response->len; i++) { - data = &g_array_index(priv->delayed_action.list_wait_for_nl_response, - DelayedActionWaitForNlResponseData, - i); - - if (data->seq_number == seq_number) { - /* We potentially receive many parts partial responses for the same sequence number. - * Thus, we only remember the result, and collect it later. */ - if (data->seq_result < 0) { - /* we already saw an error for this sequence number. - * Preserve it. */ - } else if (seq_result != WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_UNKNOWN - || data->seq_result == WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN) - data->seq_result = seq_result; - if (data->out_errmsg && !*data->out_errmsg) - *data->out_errmsg = g_strdup(msg); - return; - } - } - } - -#if NM_MORE_LOGGING - if (seq_number != priv->nlh_seq_last_handled) - _LOGt("netlink: recvmsg: unwaited sequence number %u", seq_number); - priv->nlh_seq_last_handled = seq_number; -#endif -} - -static void -event_valid_msg(NMPlatform *platform, struct nl_msg *msg, gboolean handle_events) -{ - NMLinuxPlatformPrivate *priv; - nm_auto_nmpobj NMPObject *obj = NULL; - NMPCacheOpsType cache_op; - struct nlmsghdr * msghdr; - char buf_nlmsghdr[400]; - gboolean is_del = FALSE; - gboolean is_dump = FALSE; - NMPCache * cache = nm_platform_get_cache(platform); - - msghdr = nlmsg_hdr(msg); - - if (!_nm_platform_kernel_support_detected(NM_PLATFORM_KERNEL_SUPPORT_TYPE_EXTENDED_IFA_FLAGS) - && msghdr->nlmsg_type == RTM_NEWADDR) { - /* IFA_FLAGS is set for IPv4 and IPv6 addresses. It was added first to IPv6, - * but if we encounter an IPv4 address with IFA_FLAGS, we surely have support. */ - if (nlmsg_valid_hdr(msghdr, sizeof(struct ifaddrmsg)) - && NM_IN_SET(((struct ifaddrmsg *) nlmsg_data(msghdr))->ifa_family, - AF_INET, - AF_INET6)) { - /* see if the nl_msg contains the IFA_FLAGS attribute. If it does, - * we assume, that the kernel supports extended flags, IFA_F_MANAGETEMPADDR - * and IFA_F_NOPREFIXROUTE for IPv6. They were added together in kernel 3.14, - * dated 30 March, 2014. - * - * For IPv4, IFA_F_NOPREFIXROUTE was added later, but there is no easy - * way to detect kernel support. */ - _nm_platform_kernel_support_init( - NM_PLATFORM_KERNEL_SUPPORT_TYPE_EXTENDED_IFA_FLAGS, - !!nlmsg_find_attr(msghdr, sizeof(struct ifaddrmsg), IFA_FLAGS) ? 1 : -1); - } - } - - if (!handle_events) - return; - - if (NM_IN_SET(msghdr->nlmsg_type, - RTM_DELLINK, - RTM_DELADDR, - RTM_DELROUTE, - RTM_DELRULE, - RTM_DELQDISC, - RTM_DELTFILTER)) { - /* The event notifies about a deleted object. We don't need to initialize all - * fields of the object. */ - is_del = TRUE; - } - - obj = nmp_object_new_from_nl(platform, cache, msg, is_del); - if (!obj) { - _LOGT("event-notification: %s: ignore", - nl_nlmsghdr_to_str(msghdr, buf_nlmsghdr, sizeof(buf_nlmsghdr))); - return; - } - - if (!is_del - && NM_IN_SET(msghdr->nlmsg_type, - RTM_NEWADDR, - RTM_NEWLINK, - RTM_NEWROUTE, - RTM_NEWRULE, - RTM_NEWQDISC, - RTM_NEWTFILTER)) { - is_dump = - delayed_action_refresh_all_in_progress(platform, - delayed_action_refresh_from_needle_object(obj)); - } - - _LOGT("event-notification: %s%s: %s", - nl_nlmsghdr_to_str(msghdr, buf_nlmsghdr, sizeof(buf_nlmsghdr)), - is_dump ? ", in-dump" : "", - nmp_object_to_string(obj, - is_del ? NMP_OBJECT_TO_STRING_ID : NMP_OBJECT_TO_STRING_PUBLIC, - NULL, - 0)); - - { - nm_auto_nmpobj const NMPObject *obj_old = NULL; - nm_auto_nmpobj const NMPObject *obj_new = NULL; - - switch (msghdr->nlmsg_type) { - case RTM_GETLINK: - case RTM_NEWADDR: - case RTM_NEWLINK: - case RTM_NEWQDISC: - case RTM_NEWRULE: - case RTM_NEWTFILTER: - cache_op = nmp_cache_update_netlink(cache, obj, is_dump, &obj_old, &obj_new); - if (cache_op != NMP_CACHE_OPS_UNCHANGED) { - cache_on_change(platform, cache_op, obj_old, obj_new); - nm_platform_cache_update_emit_signal(platform, cache_op, obj_old, obj_new); - } - break; - - case RTM_NEWROUTE: - { - nm_auto_nmpobj const NMPObject *obj_replace = NULL; - gboolean resync_required = FALSE; - gboolean only_dirty = FALSE; - gboolean is_ipv6; - - /* IPv4 routes that are a response to RTM_GETROUTE must have - * the cloned flag while IPv6 routes don't have to. */ - is_ipv6 = NMP_OBJECT_GET_TYPE(obj) == NMP_OBJECT_TYPE_IP6_ROUTE; - if (is_ipv6 || NM_FLAGS_HAS(obj->ip_route.r_rtm_flags, RTM_F_CLONED)) { - nm_assert(is_ipv6 || !nmp_object_is_alive(obj)); - priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - if (NM_FLAGS_HAS(priv->delayed_action.flags, - DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE)) { - guint i; - - nm_assert(priv->delayed_action.list_wait_for_nl_response->len > 0); - for (i = 0; i < priv->delayed_action.list_wait_for_nl_response->len; i++) { - DelayedActionWaitForNlResponseData *data = - &g_array_index(priv->delayed_action.list_wait_for_nl_response, - DelayedActionWaitForNlResponseData, - i); - - if (data->response_type == DELAYED_ACTION_RESPONSE_TYPE_ROUTE_GET - && data->response.out_route_get) { - nm_assert(!*data->response.out_route_get); - if (data->seq_number == nlmsg_hdr(msg)->nlmsg_seq) { - *data->response.out_route_get = nmp_object_clone(obj, FALSE); - data->response.out_route_get = NULL; - break; - } - } - } - } - } - - cache_op = nmp_cache_update_netlink_route(cache, - obj, - is_dump, - msghdr->nlmsg_flags, - &obj_old, - &obj_new, - &obj_replace, - &resync_required); - if (cache_op != NMP_CACHE_OPS_UNCHANGED) { - if (obj_replace) { - const NMDedupMultiEntry *entry_replace; - - /* we found an object that is to be replaced by the RTM_NEWROUTE message. - * While we invoke the signal, the platform cache might change and invalidate - * the findings. Mitigate that (for the most part), by marking the entry as - * dirty and only delete @obj_replace if it is still dirty afterwards. - * - * Yes, there is a tiny tiny chance for still getting it wrong. But in practice, - * the signal handlers do not cause to call the platform again, so the cache - * is not really changing. -- if they would, it would anyway be dangerous to overflow - * the stack and it's not ensured that the processing of netlink messages is - * reentrant (maybe it is). - */ - entry_replace = nmp_cache_lookup_entry(cache, obj_replace); - nm_assert(entry_replace && entry_replace->obj == obj_replace); - nm_dedup_multi_entry_set_dirty(entry_replace, TRUE); - only_dirty = TRUE; - } - cache_on_change(platform, cache_op, obj_old, obj_new); - nm_platform_cache_update_emit_signal(platform, cache_op, obj_old, obj_new); - } - - if (obj_replace) { - /* the RTM_NEWROUTE message indicates that another route was replaced. - * Remove it now. */ - cache_op = nmp_cache_remove(cache, obj_replace, TRUE, only_dirty, NULL); - if (cache_op != NMP_CACHE_OPS_UNCHANGED) { - nm_assert(cache_op == NMP_CACHE_OPS_REMOVED); - cache_on_change(platform, cache_op, obj_replace, NULL); - nm_platform_cache_update_emit_signal(platform, cache_op, obj_replace, NULL); - } - } - - if (resync_required) { - /* we'd like to avoid such resyncs as they are expensive and we should only rely on the - * netlink events. This needs investigation. */ - _LOGT("schedule resync of routes after RTM_NEWROUTE"); - delayed_action_schedule(platform, - delayed_action_refresh_from_needle_object(obj), - NULL); - } - break; - } - - case RTM_DELADDR: - case RTM_DELLINK: - case RTM_DELQDISC: - case RTM_DELROUTE: - case RTM_DELRULE: - case RTM_DELTFILTER: - cache_op = nmp_cache_remove_netlink(cache, obj, &obj_old, &obj_new); - if (cache_op != NMP_CACHE_OPS_UNCHANGED) { - cache_on_change(platform, cache_op, obj_old, obj_new); - nm_platform_cache_update_emit_signal(platform, cache_op, obj_old, obj_new); - } - break; - default: - break; - } - } -} - -/*****************************************************************************/ - -static int -do_add_link_with_lookup(NMPlatform * platform, - NMLinkType link_type, - const char * name, - struct nl_msg * nlmsg, - const NMPlatformLink **out_link) -{ - const NMPObject * obj = NULL; - WaitForNlResponseResult seq_result = WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN; - gs_free char * errmsg = NULL; - int nle; - char s_buf[256]; - NMPCache * cache = nm_platform_get_cache(platform); - - event_handler_read_netlink(platform, FALSE); - - nle = _nl_send_nlmsg(platform, - nlmsg, - &seq_result, - &errmsg, - DELAYED_ACTION_RESPONSE_TYPE_VOID, - NULL); - if (nle < 0) { - _LOGE("do-add-link[%s/%s]: failed sending netlink request \"%s\" (%d)", - name, - nm_link_type_to_string(link_type), - nm_strerror(nle), - -nle); - NM_SET_OUT(out_link, NULL); - return nle; - } - - delayed_action_handle_all(platform, FALSE); - - nm_assert(seq_result); - - _NMLOG(seq_result == WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK ? LOGL_DEBUG : LOGL_WARN, - "do-add-link[%s/%s]: %s", - name, - nm_link_type_to_string(link_type), - wait_for_nl_response_to_string(seq_result, errmsg, s_buf, sizeof(s_buf))); - - if (out_link) { - obj = nmp_cache_lookup_link_full(cache, 0, name, FALSE, link_type, NULL, NULL); - *out_link = NMP_OBJECT_CAST_LINK(obj); - } - - return wait_for_nl_response_to_nmerr(seq_result); -} - -static int -do_add_addrroute(NMPlatform * platform, - const NMPObject *obj_id, - struct nl_msg * nlmsg, - gboolean suppress_netlink_failure) -{ - WaitForNlResponseResult seq_result = WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN; - gs_free char * errmsg = NULL; - int nle; - char s_buf[256]; - - nm_assert(NM_IN_SET(NMP_OBJECT_GET_TYPE(obj_id), - NMP_OBJECT_TYPE_IP4_ADDRESS, - NMP_OBJECT_TYPE_IP6_ADDRESS, - NMP_OBJECT_TYPE_IP4_ROUTE, - NMP_OBJECT_TYPE_IP6_ROUTE)); - - event_handler_read_netlink(platform, FALSE); - - nle = _nl_send_nlmsg(platform, - nlmsg, - &seq_result, - &errmsg, - DELAYED_ACTION_RESPONSE_TYPE_VOID, - NULL); - if (nle < 0) { - _LOGE("do-add-%s[%s]: failure sending netlink request \"%s\" (%d)", - NMP_OBJECT_GET_CLASS(obj_id)->obj_type_name, - nmp_object_to_string(obj_id, NMP_OBJECT_TO_STRING_ID, NULL, 0), - nm_strerror(nle), - -nle); - return -NME_PL_NETLINK; - } - - delayed_action_handle_all(platform, FALSE); - - nm_assert(seq_result); - - _NMLOG((seq_result == WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK - || (suppress_netlink_failure && seq_result < 0)) - ? LOGL_DEBUG - : LOGL_WARN, - "do-add-%s[%s]: %s", - NMP_OBJECT_GET_CLASS(obj_id)->obj_type_name, - nmp_object_to_string(obj_id, NMP_OBJECT_TO_STRING_ID, NULL, 0), - wait_for_nl_response_to_string(seq_result, errmsg, s_buf, sizeof(s_buf))); - - if (NMP_OBJECT_GET_TYPE(obj_id) == NMP_OBJECT_TYPE_IP6_ADDRESS) { - /* In rare cases, the object is not yet ready as we received the ACK from - * kernel. Need to refetch. - * - * We want to safe the expensive refetch, thus we look first into the cache - * whether the object exists. - * - * rh#1484434 */ - if (!nmp_cache_lookup_obj(nm_platform_get_cache(platform), obj_id)) - do_request_one_type_by_needle_object(platform, obj_id); - } - - return wait_for_nl_response_to_nmerr(seq_result); -} - -static gboolean -do_delete_object(NMPlatform *platform, const NMPObject *obj_id, struct nl_msg *nlmsg) -{ - WaitForNlResponseResult seq_result = WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN; - gs_free char * errmsg = NULL; - int nle; - char s_buf[256]; - gboolean success; - const char * log_detail = ""; - - event_handler_read_netlink(platform, FALSE); - - nle = _nl_send_nlmsg(platform, - nlmsg, - &seq_result, - &errmsg, - DELAYED_ACTION_RESPONSE_TYPE_VOID, - NULL); - if (nle < 0) { - _LOGE("do-delete-%s[%s]: failure sending netlink request \"%s\" (%d)", - NMP_OBJECT_GET_CLASS(obj_id)->obj_type_name, - nmp_object_to_string(obj_id, NMP_OBJECT_TO_STRING_ID, NULL, 0), - nm_strerror(nle), - -nle); - return FALSE; - } - - delayed_action_handle_all(platform, FALSE); - - nm_assert(seq_result); - - success = TRUE; - if (seq_result == WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK) { - /* ok */ - } else if (NM_IN_SET(-((int) seq_result), ESRCH, ENOENT)) - log_detail = ", meaning the object was already removed"; - else if (NM_IN_SET(-((int) seq_result), ENXIO) - && NM_IN_SET(NMP_OBJECT_GET_TYPE(obj_id), NMP_OBJECT_TYPE_IP6_ADDRESS)) { - /* On RHEL7 kernel, deleting a non existing address fails with ENXIO */ - log_detail = ", meaning the address was already removed"; - } else if (NM_IN_SET(-((int) seq_result), EADDRNOTAVAIL) - && NM_IN_SET(NMP_OBJECT_GET_TYPE(obj_id), - NMP_OBJECT_TYPE_IP4_ADDRESS, - NMP_OBJECT_TYPE_IP6_ADDRESS)) - log_detail = ", meaning the address was already removed"; - else - success = FALSE; - - _NMLOG(success ? LOGL_DEBUG : LOGL_WARN, - "do-delete-%s[%s]: %s%s", - NMP_OBJECT_GET_CLASS(obj_id)->obj_type_name, - nmp_object_to_string(obj_id, NMP_OBJECT_TO_STRING_ID, NULL, 0), - wait_for_nl_response_to_string(seq_result, errmsg, s_buf, sizeof(s_buf)), - log_detail); - - if (NM_IN_SET(NMP_OBJECT_GET_TYPE(obj_id), - NMP_OBJECT_TYPE_IP6_ADDRESS, - NMP_OBJECT_TYPE_QDISC, - NMP_OBJECT_TYPE_TFILTER)) { - /* In rare cases, the object is still there after we receive the ACK from - * kernel. Need to refetch. - * - * We want to safe the expensive refetch, thus we look first into the cache - * whether the object exists. - * - * rh#1484434 */ - if (nmp_cache_lookup_obj(nm_platform_get_cache(platform), obj_id)) - do_request_one_type_by_needle_object(platform, obj_id); - } - - return success; -} - -static int -do_change_link(NMPlatform * platform, - ChangeLinkType change_link_type, - int ifindex, - struct nl_msg * nlmsg, - const ChangeLinkData *data) -{ - nm_auto_pop_netns NMPNetns *netns = NULL; - int nle; - WaitForNlResponseResult seq_result = WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN; - gs_free char * errmsg = NULL; - char s_buf[256]; - int result = 0; - NMLogLevel log_level = LOGL_DEBUG; - const char * log_result = "failure"; - const char * log_detail = ""; - gs_free char * log_detail_free = NULL; - const NMPObject * obj_cache; - - if (!nm_platform_netns_push(platform, &netns)) { - log_level = LOGL_ERR; - log_detail = ", failure to change network namespace"; - goto out; - } - -retry: - nle = _nl_send_nlmsg(platform, - nlmsg, - &seq_result, - &errmsg, - DELAYED_ACTION_RESPONSE_TYPE_VOID, - NULL); - if (nle < 0) { - log_level = LOGL_ERR; - log_detail_free = - g_strdup_printf(", failure sending netlink request: %s (%d)", nm_strerror(nle), -nle); - log_detail = log_detail_free; - goto out; - } - - /* always refetch the link after changing it. There seems to be issues - * and we sometimes lack events. Nuke it from the orbit... */ - delayed_action_schedule(platform, DELAYED_ACTION_TYPE_REFRESH_LINK, GINT_TO_POINTER(ifindex)); - - delayed_action_handle_all(platform, FALSE); - - nm_assert(seq_result); - - if (NM_IN_SET(-((int) seq_result), EOPNOTSUPP) && nlmsg_hdr(nlmsg)->nlmsg_type == RTM_NEWLINK) { - nlmsg_hdr(nlmsg)->nlmsg_type = RTM_SETLINK; - goto retry; - } - - if (seq_result == WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK) { - log_result = "success"; - } else if (NM_IN_SET(-((int) seq_result), EEXIST, EADDRINUSE)) { - /* */ - } else if (NM_IN_SET(-((int) seq_result), ESRCH, ENOENT)) { - log_detail = ", firmware not found"; - result = -NME_PL_NO_FIRMWARE; - } else if (NM_IN_SET(-((int) seq_result), ERANGE) - && change_link_type == CHANGE_LINK_TYPE_SET_MTU) { - log_detail = ", setting MTU to requested size is not possible"; - result = -NME_PL_CANT_SET_MTU; - } else if (NM_IN_SET(-((int) seq_result), ENFILE) - && change_link_type == CHANGE_LINK_TYPE_SET_ADDRESS - && (obj_cache = nmp_cache_lookup_link(nm_platform_get_cache(platform), ifindex)) - && obj_cache->link.l_address.len == data->set_address.length - && memcmp(obj_cache->link.l_address.data, - data->set_address.address, - data->set_address.length) - == 0) { - /* workaround ENFILE which may be wrongly returned (bgo #770456). - * If the MAC address is as expected, assume success? */ - log_result = "success"; - log_detail = " (assume success changing address)"; - result = 0; - } else if (NM_IN_SET(-((int) seq_result), ENODEV)) { - log_level = LOGL_DEBUG; - result = -NME_PL_NOT_FOUND; - } else if (-((int) seq_result) == EAFNOSUPPORT) { - log_level = LOGL_DEBUG; - result = -NME_PL_OPNOTSUPP; - } else { - log_level = LOGL_WARN; - result = -NME_UNSPEC; - } - -out: - _NMLOG(log_level, - "do-change-link[%d]: %s changing link: %s%s", - ifindex, - log_result, - wait_for_nl_response_to_string(seq_result, errmsg, s_buf, sizeof(s_buf)), - log_detail); - return result; -} - -static int -link_add(NMPlatform * platform, - NMLinkType type, - const char * name, - int parent, - const void * address, - size_t address_len, - guint32 mtu, - gconstpointer extra_data, - const NMPlatformLink **out_link) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - - if (type == NM_LINK_TYPE_BOND) { - /* When the kernel loads the bond module, either via explicit modprobe - * or automatically in response to creating a bond master, it will also - * create a 'bond0' interface. Since the bond we're about to create may - * or may not be named 'bond0' prevent potential confusion about a bond - * that the user didn't want by telling the bonding module not to create - * bond0 automatically. - */ - if (!g_file_test("/sys/class/net/bonding_masters", G_FILE_TEST_EXISTS)) - (void) nm_utils_modprobe(NULL, TRUE, "bonding", "max_bonds=0", NULL); - } - - nlmsg = _nl_msg_new_link(RTM_NEWLINK, NLM_F_CREATE | NLM_F_EXCL, 0, name); - if (!nlmsg) - return -NME_UNSPEC; - - if (parent > 0) - NLA_PUT_U32(nlmsg, IFLA_LINK, parent); - - if (address && address_len) - NLA_PUT(nlmsg, IFLA_ADDRESS, address_len, address); - - if (mtu) - NLA_PUT_U32(nlmsg, IFLA_MTU, mtu); - - if (!_nl_msg_new_link_set_linkinfo(nlmsg, type, extra_data)) - return -NME_UNSPEC; - - return do_add_link_with_lookup(platform, type, name, nlmsg, out_link); -nla_put_failure: - g_return_val_if_reached(-NME_BUG); -} - -static gboolean -link_delete(NMPlatform *platform, int ifindex) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - NMPObject obj_id; - const NMPObject * obj; - - obj = nmp_cache_lookup_link(nm_platform_get_cache(platform), ifindex); - if (!obj || !obj->_link.netlink.is_in_netlink) - return FALSE; - - nlmsg = _nl_msg_new_link(RTM_DELLINK, 0, ifindex, NULL); - - nmp_object_stackinit_id_link(&obj_id, ifindex); - return do_delete_object(platform, &obj_id, nlmsg); -} - -static gboolean -link_refresh(NMPlatform *platform, int ifindex) -{ - do_request_link(platform, ifindex, NULL); - return !!nm_platform_link_get_obj(platform, ifindex, TRUE); -} - -static gboolean -link_set_netns(NMPlatform *platform, int ifindex, int netns_fd) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - - nlmsg = _nl_msg_new_link(RTM_NEWLINK, 0, ifindex, NULL); - if (!nlmsg) - return FALSE; - - NLA_PUT(nlmsg, IFLA_NET_NS_FD, 4, &netns_fd); - return (do_change_link(platform, CHANGE_LINK_TYPE_UNSPEC, ifindex, nlmsg, NULL) >= 0); - -nla_put_failure: - g_return_val_if_reached(FALSE); -} - -static int -link_change_flags(NMPlatform *platform, int ifindex, unsigned flags_mask, unsigned flags_set) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - char s_flags[100]; - - _LOGD("link: change %d: flags: set 0x%x/0x%x ([%s] / [%s])", - ifindex, - flags_set, - flags_mask, - nm_platform_link_flags2str(flags_set, s_flags, sizeof(s_flags)), - nm_platform_link_flags2str(flags_mask, NULL, 0)); - - nlmsg = _nl_msg_new_link_full(RTM_NEWLINK, 0, ifindex, NULL, AF_UNSPEC, flags_mask, flags_set); - if (!nlmsg) - return -NME_UNSPEC; - return do_change_link(platform, CHANGE_LINK_TYPE_UNSPEC, ifindex, nlmsg, NULL); -} - -static gboolean -link_set_up(NMPlatform *platform, int ifindex, gboolean *out_no_firmware) -{ - int r; - - r = link_change_flags(platform, ifindex, IFF_UP, IFF_UP); - NM_SET_OUT(out_no_firmware, (r == -NME_PL_NO_FIRMWARE)); - return r >= 0; -} - -static gboolean -link_set_down(NMPlatform *platform, int ifindex) -{ - return (link_change_flags(platform, ifindex, IFF_UP, 0) >= 0); -} - -static gboolean -link_set_arp(NMPlatform *platform, int ifindex) -{ - return (link_change_flags(platform, ifindex, IFF_NOARP, 0) >= 0); -} - -static gboolean -link_set_noarp(NMPlatform *platform, int ifindex) -{ - return (link_change_flags(platform, ifindex, IFF_NOARP, IFF_NOARP) >= 0); -} - -static int -link_set_user_ipv6ll_enabled(NMPlatform *platform, int ifindex, gboolean enabled) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - guint8 mode = enabled ? NM_IN6_ADDR_GEN_MODE_NONE : NM_IN6_ADDR_GEN_MODE_EUI64; - - _LOGD("link: change %d: user-ipv6ll: set IPv6 address generation mode to %s", - ifindex, - nm_platform_link_inet6_addrgenmode2str(mode, NULL, 0)); - - if (!nm_platform_kernel_support_get(NM_PLATFORM_KERNEL_SUPPORT_TYPE_USER_IPV6LL)) { - _LOGD("link: change %d: user-ipv6ll: not supported", ifindex); - return -NME_PL_OPNOTSUPP; - } - - nlmsg = _nl_msg_new_link(RTM_NEWLINK, 0, ifindex, NULL); - if (!nlmsg || !_nl_msg_new_link_set_afspec(nlmsg, mode, NULL)) - g_return_val_if_reached(-NME_BUG); - - return do_change_link(platform, CHANGE_LINK_TYPE_UNSPEC, ifindex, nlmsg, NULL); -} - -static gboolean -link_set_token(NMPlatform *platform, int ifindex, NMUtilsIPv6IfaceId iid) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - char sbuf[NM_UTILS_INET_ADDRSTRLEN]; - - _LOGD("link: change %d: token: set IPv6 address generation token to %s", - ifindex, - nm_utils_inet6_interface_identifier_to_token(iid, sbuf)); - - nlmsg = _nl_msg_new_link(RTM_NEWLINK, 0, ifindex, NULL); - if (!nlmsg || !_nl_msg_new_link_set_afspec(nlmsg, -1, &iid)) - g_return_val_if_reached(FALSE); - - return (do_change_link(platform, CHANGE_LINK_TYPE_UNSPEC, ifindex, nlmsg, NULL) >= 0); -} - -static gboolean -link_supports_carrier_detect(NMPlatform *platform, int ifindex) -{ - nm_auto_pop_netns NMPNetns *netns = NULL; - - if (!nm_platform_netns_push(platform, &netns)) - return FALSE; - - /* We use netlink for the actual carrier detection, but netlink can't tell - * us whether the device actually supports carrier detection in the first - * place. We assume any device that does implements one of these two APIs. - */ - return nmp_utils_ethtool_supports_carrier_detect(ifindex) - || nmp_utils_mii_supports_carrier_detect(ifindex); -} - -static gboolean -link_supports_vlans(NMPlatform *platform, int ifindex) -{ - nm_auto_pop_netns NMPNetns *netns = NULL; - const NMPObject * obj; - - obj = nm_platform_link_get_obj(platform, ifindex, TRUE); - - /* Only ARPHRD_ETHER links can possibly support VLANs. */ - if (!obj || obj->link.arptype != ARPHRD_ETHER) - return FALSE; - - if (!nm_platform_netns_push(platform, &netns)) - return FALSE; - - return nmp_utils_ethtool_supports_vlans(ifindex); -} - -static gboolean -link_supports_sriov(NMPlatform *platform, int ifindex) -{ - nm_auto_pop_netns NMPNetns *netns = NULL; - nm_auto_close int dirfd = -1; - char ifname[IFNAMSIZ]; - int num = -1; - - if (!nm_platform_netns_push(platform, &netns)) - return FALSE; - - dirfd = nm_platform_sysctl_open_netdir(platform, ifindex, ifname); - if (dirfd < 0) - return FALSE; - - num = - nm_platform_sysctl_get_int32(platform, - NMP_SYSCTL_PATHID_NETDIR(dirfd, ifname, "device/sriov_numvfs"), - -1); - - return num != -1; -} - -static int -link_set_address(NMPlatform *platform, int ifindex, gconstpointer address, size_t length) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - const ChangeLinkData d = { - .set_address = - { - .address = address, - .length = length, - }, - }; - - if (!address || !length) - g_return_val_if_reached(-NME_BUG); - - nlmsg = _nl_msg_new_link(RTM_NEWLINK, 0, ifindex, NULL); - if (!nlmsg) - g_return_val_if_reached(-NME_BUG); - - NLA_PUT(nlmsg, IFLA_ADDRESS, length, address); - - return do_change_link(platform, CHANGE_LINK_TYPE_SET_ADDRESS, ifindex, nlmsg, &d); -nla_put_failure: - g_return_val_if_reached(-NME_BUG); -} - -static int -link_set_name(NMPlatform *platform, int ifindex, const char *name) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - - nlmsg = _nl_msg_new_link(RTM_NEWLINK, 0, ifindex, NULL); - if (!nlmsg) - g_return_val_if_reached(-NME_BUG); - - NLA_PUT(nlmsg, IFLA_IFNAME, strlen(name) + 1, name); - - return (do_change_link(platform, CHANGE_LINK_TYPE_UNSPEC, ifindex, nlmsg, NULL) >= 0); -nla_put_failure: - g_return_val_if_reached(FALSE); -} - -static gboolean -link_get_permanent_address(NMPlatform *platform, int ifindex, guint8 *buf, size_t *length) -{ - nm_auto_pop_netns NMPNetns *netns = NULL; - - if (!nm_platform_netns_push(platform, &netns)) - return FALSE; - - return nmp_utils_ethtool_get_permanent_address(ifindex, buf, length); -} - -static int -link_set_mtu(NMPlatform *platform, int ifindex, guint32 mtu) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - - nlmsg = _nl_msg_new_link(RTM_NEWLINK, 0, ifindex, NULL); - if (!nlmsg) - return FALSE; - - NLA_PUT_U32(nlmsg, IFLA_MTU, mtu); - - return do_change_link(platform, CHANGE_LINK_TYPE_SET_MTU, ifindex, nlmsg, NULL); -nla_put_failure: - g_return_val_if_reached(FALSE); -} - -static void -sriov_idle_cb(gpointer user_data, GCancellable *cancellable) -{ - gs_unref_object NMPlatform *platform = NULL; - gs_free_error GError *cancelled_error = NULL; - gs_free_error GError * error = NULL; - NMPlatformAsyncCallback callback; - gpointer callback_data; - - g_cancellable_set_error_if_cancelled(cancellable, &cancelled_error); - nm_utils_user_data_unpack(user_data, &platform, &error, &callback, &callback_data); - callback(cancelled_error ?: error, callback_data); -} - -static void -link_set_sriov_params_async(NMPlatform * platform, - int ifindex, - guint num_vfs, - NMOptionBool autoprobe, - NMPlatformAsyncCallback callback, - gpointer data, - GCancellable * cancellable) -{ - nm_auto_pop_netns NMPNetns *netns = NULL; - gs_free_error GError *error = NULL; - nm_auto_close int dirfd = -1; - int current_autoprobe; - guint i, total; - gint64 current_num; - char ifname[IFNAMSIZ]; - gpointer packed; - const char * values[3]; - char buf[64]; - - g_return_if_fail(callback || !data); - g_return_if_fail(cancellable); - - if (!nm_platform_netns_push(platform, &netns)) { - g_set_error_literal(&error, - NM_UTILS_ERROR, - NM_UTILS_ERROR_UNKNOWN, - "couldn't change namespace"); - goto out_idle; - } - - dirfd = nm_platform_sysctl_open_netdir(platform, ifindex, ifname); - if (!dirfd) { - g_set_error_literal(&error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN, "couldn't open netdir"); - goto out_idle; - } - - total = nm_platform_sysctl_get_int_checked( - platform, - NMP_SYSCTL_PATHID_NETDIR(dirfd, ifname, "device/sriov_totalvfs"), - 10, - 0, - G_MAXUINT, - 0); - if (!errno && num_vfs > total) { - _LOGW("link: %d only supports %u VFs (requested %u)", ifindex, total, num_vfs); - num_vfs = total; - } - - /* - * Take special care when setting new values: - * - don't touch anything if the right values are already set - * - to change the number of VFs or autoprobe we need to destroy existing VFs - * - the autoprobe setting is irrelevant when numvfs is zero - */ - current_num = nm_platform_sysctl_get_int_checked( - platform, - NMP_SYSCTL_PATHID_NETDIR(dirfd, ifname, "device/sriov_numvfs"), - 10, - 0, - G_MAXUINT, - -1); - current_autoprobe = nm_platform_sysctl_get_int_checked( - platform, - NMP_SYSCTL_PATHID_NETDIR(dirfd, ifname, "device/sriov_drivers_autoprobe"), - 10, - 0, - 1, - -1); - - if (current_autoprobe == -1 && errno == ENOENT) { - /* older kernel versions don't have this sysctl. Assume the value is - * "1". */ - current_autoprobe = 1; - } - - if (current_num == num_vfs - && (autoprobe == NM_OPTION_BOOL_DEFAULT || current_autoprobe == autoprobe)) - goto out_idle; - - if (NM_IN_SET(autoprobe, NM_OPTION_BOOL_TRUE, NM_OPTION_BOOL_FALSE) - && current_autoprobe != autoprobe - && !nm_platform_sysctl_set( - NM_PLATFORM_GET, - NMP_SYSCTL_PATHID_NETDIR(dirfd, ifname, "device/sriov_drivers_autoprobe"), - nm_sprintf_buf(buf, "%d", (int) autoprobe))) { - g_set_error(&error, - NM_UTILS_ERROR, - NM_UTILS_ERROR_UNKNOWN, - "couldn't set SR-IOV drivers-autoprobe to %d: %s", - (int) autoprobe, - nm_strerror_native(errno)); - goto out_idle; - } - - if (current_num == 0 && num_vfs == 0) - goto out_idle; - - i = 0; - if (current_num != 0) - values[i++] = "0"; - if (num_vfs != 0) - values[i++] = nm_sprintf_bufa(32, "%u", num_vfs); - values[i++] = NULL; - - sysctl_set_async(platform, - NMP_SYSCTL_PATHID_NETDIR(dirfd, ifname, "device/sriov_numvfs"), - values, - callback, - data, - cancellable); - return; - -out_idle: - if (callback) { - packed = nm_utils_user_data_pack(g_object_ref(platform), - g_steal_pointer(&error), - callback, - data); - nm_utils_invoke_on_idle(cancellable, sriov_idle_cb, packed); - } -} - -static gboolean -link_set_sriov_vfs(NMPlatform *platform, int ifindex, const NMPlatformVF *const *vfs) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - struct nlattr * list, *info, *vlan_list; - guint i; - - nlmsg = _nl_msg_new_link(RTM_NEWLINK, 0, ifindex, NULL); - if (!nlmsg) - g_return_val_if_reached(-NME_BUG); - - if (!(list = nla_nest_start(nlmsg, IFLA_VFINFO_LIST))) - goto nla_put_failure; - - for (i = 0; vfs[i]; i++) { - const NMPlatformVF *vf = vfs[i]; - - if (!(info = nla_nest_start(nlmsg, IFLA_VF_INFO))) - goto nla_put_failure; - - if (vf->spoofchk >= 0) { - struct _ifla_vf_setting ivs = {0}; - - ivs.vf = vf->index; - ivs.setting = vf->spoofchk; - NLA_PUT(nlmsg, IFLA_VF_SPOOFCHK, sizeof(ivs), &ivs); - } - - if (vf->trust >= 0) { - struct _ifla_vf_setting ivs = {0}; - - ivs.vf = vf->index; - ivs.setting = vf->trust; - NLA_PUT(nlmsg, IFLA_VF_TRUST, sizeof(ivs), &ivs); - } - - if (vf->mac.len) { - struct ifla_vf_mac ivm = {0}; - - ivm.vf = vf->index; - memcpy(ivm.mac, vf->mac.data, vf->mac.len); - NLA_PUT(nlmsg, IFLA_VF_MAC, sizeof(ivm), &ivm); - } - - if (vf->min_tx_rate || vf->max_tx_rate) { - struct _ifla_vf_rate ivr = {0}; - - ivr.vf = vf->index; - ivr.min_tx_rate = vf->min_tx_rate; - ivr.max_tx_rate = vf->max_tx_rate; - NLA_PUT(nlmsg, IFLA_VF_RATE, sizeof(ivr), &ivr); - } - - /* Kernel only supports one VLAN per VF now. If this - * changes in the future, we need to figure out how to - * clear existing VLANs and set new ones in one message - * with the new API.*/ - if (vf->num_vlans > 1) { - _LOGW("multiple VLANs per VF are not supported at the moment"); - return FALSE; - } else { - struct _ifla_vf_vlan_info ivvi = {0}; - - if (!(vlan_list = nla_nest_start(nlmsg, IFLA_VF_VLAN_LIST))) - goto nla_put_failure; - - ivvi.vf = vf->index; - if (vf->num_vlans == 1) { - ivvi.vlan = vf->vlans[0].id; - ivvi.qos = vf->vlans[0].qos; - ivvi.vlan_proto = htons(vf->vlans[0].proto_ad ? ETH_P_8021AD : ETH_P_8021Q); - } else { - /* Clear existing VLAN */ - ivvi.vlan = 0; - ivvi.qos = 0; - ivvi.vlan_proto = htons(ETH_P_8021Q); - } - - NLA_PUT(nlmsg, IFLA_VF_VLAN_INFO, sizeof(ivvi), &ivvi); - nla_nest_end(nlmsg, vlan_list); - } - nla_nest_end(nlmsg, info); - } - nla_nest_end(nlmsg, list); - - return (do_change_link(platform, CHANGE_LINK_TYPE_UNSPEC, ifindex, nlmsg, NULL) >= 0); -nla_put_failure: - g_return_val_if_reached(FALSE); -} - -static gboolean -link_set_bridge_vlans(NMPlatform * platform, - int ifindex, - gboolean on_master, - const NMPlatformBridgeVlan *const *vlans) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - struct nlattr * list; - struct bridge_vlan_info vinfo = {}; - guint i; - - nlmsg = - _nl_msg_new_link_full(vlans ? RTM_SETLINK : RTM_DELLINK, 0, ifindex, NULL, AF_BRIDGE, 0, 0); - if (!nlmsg) - g_return_val_if_reached(-NME_BUG); - - if (!(list = nla_nest_start(nlmsg, IFLA_AF_SPEC))) - goto nla_put_failure; - - NLA_PUT_U16(nlmsg, IFLA_BRIDGE_FLAGS, on_master ? BRIDGE_FLAGS_MASTER : BRIDGE_FLAGS_SELF); - - if (vlans) { - /* Add VLANs */ - for (i = 0; vlans[i]; i++) { - const NMPlatformBridgeVlan *vlan = vlans[i]; - gboolean is_range = vlan->vid_start != vlan->vid_end; - - vinfo.vid = vlan->vid_start; - vinfo.flags = is_range ? BRIDGE_VLAN_INFO_RANGE_BEGIN : 0; - - if (vlan->untagged) - vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; - if (vlan->pvid) - vinfo.flags |= BRIDGE_VLAN_INFO_PVID; - - NLA_PUT(nlmsg, IFLA_BRIDGE_VLAN_INFO, sizeof(vinfo), &vinfo); - - if (is_range) { - vinfo.vid = vlan->vid_end; - vinfo.flags = BRIDGE_VLAN_INFO_RANGE_END; - NLA_PUT(nlmsg, IFLA_BRIDGE_VLAN_INFO, sizeof(vinfo), &vinfo); - } - } - } else { - /* Flush existing VLANs */ - vinfo.vid = 1; - vinfo.flags = BRIDGE_VLAN_INFO_RANGE_BEGIN; - NLA_PUT(nlmsg, IFLA_BRIDGE_VLAN_INFO, sizeof(vinfo), &vinfo); - - vinfo.vid = 4094; - vinfo.flags = BRIDGE_VLAN_INFO_RANGE_END; - NLA_PUT(nlmsg, IFLA_BRIDGE_VLAN_INFO, sizeof(vinfo), &vinfo); - } - - nla_nest_end(nlmsg, list); - - return (do_change_link(platform, CHANGE_LINK_TYPE_UNSPEC, ifindex, nlmsg, NULL) >= 0); -nla_put_failure: - g_return_val_if_reached(FALSE); -} - -static char * -link_get_physical_port_id(NMPlatform *platform, int ifindex) -{ - nm_auto_close int dirfd = -1; - char ifname_verified[IFNAMSIZ]; - - dirfd = nm_platform_sysctl_open_netdir(platform, ifindex, ifname_verified); - if (dirfd < 0) - return NULL; - return sysctl_get(platform, NMP_SYSCTL_PATHID_NETDIR(dirfd, ifname_verified, "phys_port_id")); -} - -static guint -link_get_dev_id(NMPlatform *platform, int ifindex) -{ - nm_auto_close int dirfd = -1; - char ifname_verified[IFNAMSIZ]; - - dirfd = nm_platform_sysctl_open_netdir(platform, ifindex, ifname_verified); - if (dirfd < 0) - return 0; - return nm_platform_sysctl_get_int_checked( - platform, - NMP_SYSCTL_PATHID_NETDIR(dirfd, ifname_verified, "dev_id"), - 16, - 0, - G_MAXUINT16, - 0); -} - -static gboolean -link_tun_add(NMPlatform * platform, - const char * name, - const NMPlatformLnkTun *props, - const NMPlatformLink ** out_link, - int * out_fd) -{ - const NMPObject * obj; - struct ifreq ifr = {}; - nm_auto_close int fd = -1; - - nm_assert(NM_IN_SET(props->type, IFF_TAP, IFF_TUN)); - nm_assert(props->persist || out_fd); - - fd = open("/dev/net/tun", O_RDWR | O_CLOEXEC); - if (fd < 0) - return FALSE; - - nm_utils_ifname_cpy(ifr.ifr_name, name); - ifr.ifr_flags = ((short) props->type) | ((short) IFF_TUN_EXCL) - | (!props->pi ? (short) IFF_NO_PI : (short) 0) - | (props->vnet_hdr ? (short) IFF_VNET_HDR : (short) 0) - | (props->multi_queue ? (short) NM_IFF_MULTI_QUEUE : (short) 0); - if (ioctl(fd, TUNSETIFF, &ifr)) - return FALSE; - - if (props->owner_valid) { - if (ioctl(fd, TUNSETOWNER, (uid_t) props->owner)) - return FALSE; - } - - if (props->group_valid) { - if (ioctl(fd, TUNSETGROUP, (gid_t) props->group)) - return FALSE; - } - - if (props->persist) { - if (ioctl(fd, TUNSETPERSIST, 1)) - return FALSE; - } - - do_request_link(platform, 0, name); - obj = nmp_cache_lookup_link_full(nm_platform_get_cache(platform), - 0, - name, - FALSE, - NM_LINK_TYPE_TUN, - NULL, - NULL); - - if (!obj) - return FALSE; - - NM_SET_OUT(out_link, &obj->link); - NM_SET_OUT(out_fd, nm_steal_fd(&fd)); - return TRUE; -} - -static void -_vlan_change_vlan_qos_mapping_create(gboolean is_ingress_map, - gboolean reset_all, - const NMVlanQosMapping *current_map, - guint current_n_map, - const NMVlanQosMapping *set_map, - guint set_n_map, - NMVlanQosMapping ** out_map, - guint * out_n_map) -{ - NMVlanQosMapping *map; - guint i, j, len; - const guint INGRESS_RANGE_LEN = 8; - - nm_assert(out_map && !*out_map); - nm_assert(out_n_map && !*out_n_map); - - if (!reset_all) - current_n_map = 0; - else if (is_ingress_map) - current_n_map = INGRESS_RANGE_LEN; - - len = current_n_map + set_n_map; - - if (len == 0) - return; - - map = g_new(NMVlanQosMapping, len); - - if (current_n_map) { - if (is_ingress_map) { - /* For the ingress-map, there are only 8 entries (0 to 7). - * When the user requests to reset all entries, we don't actually - * need the cached entries, we can just explicitly clear all possible - * ones. - * - * That makes only a real difference in case our cache is out-of-date. - * - * For the egress map we cannot do that, because there are far too - * many. There we can only clear the entries that we know about. */ - for (i = 0; i < INGRESS_RANGE_LEN; i++) { - map[i].from = i; - map[i].to = 0; - } - } else { - for (i = 0; i < current_n_map; i++) { - map[i].from = current_map[i].from; - map[i].to = 0; - } - } - } - if (set_n_map) - memcpy(&map[current_n_map], set_map, sizeof(*set_map) * set_n_map); - - g_qsort_with_data(map, len, sizeof(*map), _vlan_qos_mapping_cmp_from, NULL); - - for (i = 0, j = 0; i < len; i++) { - if ((is_ingress_map && !VLAN_XGRESS_PRIO_VALID(map[i].from)) - || (!is_ingress_map && !VLAN_XGRESS_PRIO_VALID(map[i].to))) - continue; - if (j > 0 && map[j - 1].from == map[i].from) - map[j - 1] = map[i]; - else - map[j++] = map[i]; - } - - *out_map = map; - *out_n_map = j; -} - -static gboolean -link_vlan_change(NMPlatform * platform, - int ifindex, - NMVlanFlags flags_mask, - NMVlanFlags flags_set, - gboolean ingress_reset_all, - const NMVlanQosMapping *ingress_map, - gsize n_ingress_map, - gboolean egress_reset_all, - const NMVlanQosMapping *egress_map, - gsize n_egress_map) -{ - const NMPObject * obj_cache; - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - const NMPObjectLnkVlan * lnk; - guint new_n_ingress_map = 0; - guint new_n_egress_map = 0; - gs_free NMVlanQosMapping *new_ingress_map = NULL; - gs_free NMVlanQosMapping *new_egress_map = NULL; - - obj_cache = nmp_cache_lookup_link(nm_platform_get_cache(platform), ifindex); - if (!obj_cache || !obj_cache->_link.netlink.is_in_netlink) { - _LOGD("link: change %d: %s: link does not exist", ifindex, "vlan"); - return FALSE; - } - - lnk = obj_cache->_link.netlink.lnk ? &obj_cache->_link.netlink.lnk->_lnk_vlan : NULL; - - flags_set &= flags_mask; - - _vlan_change_vlan_qos_mapping_create(TRUE, - ingress_reset_all, - lnk ? lnk->ingress_qos_map : NULL, - lnk ? lnk->n_ingress_qos_map : 0, - ingress_map, - n_ingress_map, - &new_ingress_map, - &new_n_ingress_map); - - _vlan_change_vlan_qos_mapping_create(FALSE, - egress_reset_all, - lnk ? lnk->egress_qos_map : NULL, - lnk ? lnk->n_egress_qos_map : 0, - egress_map, - n_egress_map, - &new_egress_map, - &new_n_egress_map); - - nlmsg = _nl_msg_new_link(RTM_NEWLINK, 0, ifindex, NULL); - if (!nlmsg - || !_nl_msg_new_link_set_linkinfo_vlan(nlmsg, - -1, - flags_mask, - flags_set, - new_ingress_map, - new_n_ingress_map, - new_egress_map, - new_n_egress_map)) - g_return_val_if_reached(FALSE); - - return (do_change_link(platform, CHANGE_LINK_TYPE_UNSPEC, ifindex, nlmsg, NULL) >= 0); -} - -static gboolean -link_enslave(NMPlatform *platform, int master, int slave) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - int ifindex = slave; - - nlmsg = _nl_msg_new_link(RTM_NEWLINK, 0, ifindex, NULL); - if (!nlmsg) - return FALSE; - - NLA_PUT_U32(nlmsg, IFLA_MASTER, master); - - return (do_change_link(platform, CHANGE_LINK_TYPE_UNSPEC, ifindex, nlmsg, NULL) >= 0); -nla_put_failure: - g_return_val_if_reached(FALSE); -} - -static gboolean -link_release(NMPlatform *platform, int master, int slave) -{ - return link_enslave(platform, 0, slave); -} - -/*****************************************************************************/ - -static gboolean -_infiniband_partition_action(NMPlatform * platform, - InfinibandAction action, - int parent, - int p_key, - const NMPlatformLink **out_link) -{ - nm_auto_close int dirfd = -1; - char ifname_parent[IFNAMSIZ]; - const NMPObject * obj; - char id[20]; - char name[IFNAMSIZ]; - gboolean success; - - nm_assert(NM_IN_SET(action, INFINIBAND_ACTION_CREATE_CHILD, INFINIBAND_ACTION_DELETE_CHILD)); - nm_assert(p_key > 0 && p_key <= 0xffff && p_key != 0x8000); - - dirfd = nm_platform_sysctl_open_netdir(platform, parent, ifname_parent); - if (dirfd < 0) { - errno = ENOENT; - return FALSE; - } - - nm_sprintf_buf(id, "0x%04x", p_key); - if (action == INFINIBAND_ACTION_CREATE_CHILD) - success = - nm_platform_sysctl_set(platform, - NMP_SYSCTL_PATHID_NETDIR(dirfd, ifname_parent, "create_child"), - id); - else - success = - nm_platform_sysctl_set(platform, - NMP_SYSCTL_PATHID_NETDIR(dirfd, ifname_parent, "delete_child"), - id); - - if (!success) { - if (action == INFINIBAND_ACTION_DELETE_CHILD && errno == ENODEV) - return TRUE; - return FALSE; - } - - nm_utils_new_infiniband_name(name, ifname_parent, p_key); - do_request_link(platform, 0, name); - - if (action == INFINIBAND_ACTION_DELETE_CHILD) - return TRUE; - - obj = nmp_cache_lookup_link_full(nm_platform_get_cache(platform), - 0, - name, - FALSE, - NM_LINK_TYPE_INFINIBAND, - NULL, - NULL); - if (out_link) - *out_link = obj ? &obj->link : NULL; - return !!obj; -} - -static gboolean -infiniband_partition_add(NMPlatform * platform, - int parent, - int p_key, - const NMPlatformLink **out_link) -{ - return _infiniband_partition_action(platform, - INFINIBAND_ACTION_CREATE_CHILD, - parent, - p_key, - out_link); -} - -static gboolean -infiniband_partition_delete(NMPlatform *platform, int parent, int p_key) -{ - return _infiniband_partition_action(platform, - INFINIBAND_ACTION_DELETE_CHILD, - parent, - p_key, - NULL); -} - -/*****************************************************************************/ - -static GObject * -get_ext_data(NMPlatform *platform, int ifindex) -{ - const NMPObject *obj; - - obj = nmp_cache_lookup_link(nm_platform_get_cache(platform), ifindex); - if (!obj) - return NULL; - - return obj->_link.ext_data; -} - -/*****************************************************************************/ - -#define WIFI_GET_WIFI_DATA_NETNS(wifi_data, platform, ifindex, retval) \ - nm_auto_pop_netns NMPNetns *netns = NULL; \ - NMWifiUtils * wifi_data; \ - if (!nm_platform_netns_push(platform, &netns)) \ - return retval; \ - wifi_data = NM_WIFI_UTILS(get_ext_data(platform, ifindex)); \ - if (!wifi_data) \ - return retval; - -static gboolean -wifi_get_capabilities(NMPlatform *platform, int ifindex, NMDeviceWifiCapabilities *caps) -{ - WIFI_GET_WIFI_DATA_NETNS(wifi_data, platform, ifindex, FALSE); - if (caps) - *caps = nm_wifi_utils_get_caps(wifi_data); - return TRUE; -} - -static guint32 -wifi_get_frequency(NMPlatform *platform, int ifindex) -{ - WIFI_GET_WIFI_DATA_NETNS(wifi_data, platform, ifindex, 0); - return nm_wifi_utils_get_freq(wifi_data); -} - -static gboolean -wifi_get_station(NMPlatform * platform, - int ifindex, - NMEtherAddr *out_bssid, - int * out_quality, - guint32 * out_rate) -{ - WIFI_GET_WIFI_DATA_NETNS(wifi_data, platform, ifindex, FALSE); - return nm_wifi_utils_get_station(wifi_data, out_bssid, out_quality, out_rate); -} - -static NM80211Mode -wifi_get_mode(NMPlatform *platform, int ifindex) -{ - WIFI_GET_WIFI_DATA_NETNS(wifi_data, platform, ifindex, NM_802_11_MODE_UNKNOWN); - return nm_wifi_utils_get_mode(wifi_data); -} - -static void -wifi_set_mode(NMPlatform *platform, int ifindex, NM80211Mode mode) -{ - WIFI_GET_WIFI_DATA_NETNS(wifi_data, platform, ifindex, ); - nm_wifi_utils_set_mode(wifi_data, mode); -} - -static void -wifi_set_powersave(NMPlatform *platform, int ifindex, guint32 powersave) -{ - WIFI_GET_WIFI_DATA_NETNS(wifi_data, platform, ifindex, ); - nm_wifi_utils_set_powersave(wifi_data, powersave); -} - -static guint32 -wifi_find_frequency(NMPlatform *platform, int ifindex, const guint32 *freqs) -{ - WIFI_GET_WIFI_DATA_NETNS(wifi_data, platform, ifindex, 0); - return nm_wifi_utils_find_freq(wifi_data, freqs); -} - -static void -wifi_indicate_addressing_running(NMPlatform *platform, int ifindex, gboolean running) -{ - WIFI_GET_WIFI_DATA_NETNS(wifi_data, platform, ifindex, ); - nm_wifi_utils_indicate_addressing_running(wifi_data, running); -} - -static NMSettingWirelessWakeOnWLan -wifi_get_wake_on_wlan(NMPlatform *platform, int ifindex) -{ - WIFI_GET_WIFI_DATA_NETNS(wifi_data, platform, ifindex, FALSE); - return nm_wifi_utils_get_wake_on_wlan(wifi_data); -} - -static gboolean -wifi_set_wake_on_wlan(NMPlatform *platform, int ifindex, NMSettingWirelessWakeOnWLan wowl) -{ - WIFI_GET_WIFI_DATA_NETNS(wifi_data, platform, ifindex, FALSE); - return nm_wifi_utils_set_wake_on_wlan(wifi_data, wowl); -} - -/*****************************************************************************/ - -static gboolean -link_can_assume(NMPlatform *platform, int ifindex) -{ - NMPLookup lookup; - const NMPObject *link, *o; - NMDedupMultiIter iter; - NMPCache * cache = nm_platform_get_cache(platform); - - if (ifindex <= 0) - return FALSE; - - link = nm_platform_link_get_obj(platform, ifindex, TRUE); - if (!link) - return FALSE; - - if (!NM_FLAGS_HAS(link->link.n_ifi_flags, IFF_UP)) - return FALSE; - - if (link->link.master > 0) - return TRUE; - - nmp_lookup_init_object(&lookup, NMP_OBJECT_TYPE_IP4_ADDRESS, ifindex); - if (nmp_cache_lookup(cache, &lookup)) - return TRUE; - - nmp_lookup_init_object(&lookup, NMP_OBJECT_TYPE_IP6_ADDRESS, ifindex); - nmp_cache_iter_for_each (&iter, nmp_cache_lookup(cache, &lookup), &o) { - nm_assert(NMP_OBJECT_GET_TYPE(o) == NMP_OBJECT_TYPE_IP6_ADDRESS); - if (!IN6_IS_ADDR_LINKLOCAL(&o->ip6_address.address)) - return TRUE; - } - return FALSE; -} - -/*****************************************************************************/ - -static guint32 -mesh_get_channel(NMPlatform *platform, int ifindex) -{ - WIFI_GET_WIFI_DATA_NETNS(wifi_data, platform, ifindex, 0); - return nm_wifi_utils_get_mesh_channel(wifi_data); -} - -static gboolean -mesh_set_channel(NMPlatform *platform, int ifindex, guint32 channel) -{ - WIFI_GET_WIFI_DATA_NETNS(wifi_data, platform, ifindex, FALSE); - return nm_wifi_utils_set_mesh_channel(wifi_data, channel); -} - -static gboolean -mesh_set_ssid(NMPlatform *platform, int ifindex, const guint8 *ssid, gsize len) -{ - WIFI_GET_WIFI_DATA_NETNS(wifi_data, platform, ifindex, FALSE); - return nm_wifi_utils_set_mesh_ssid(wifi_data, ssid, len); -} - -/*****************************************************************************/ - -#define WPAN_GET_WPAN_DATA(wpan_data, platform, ifindex, retval) \ - NMWpanUtils *wpan_data = NM_WPAN_UTILS(get_ext_data(platform, ifindex)); \ - if (!wpan_data) \ - return retval; - -static guint16 -wpan_get_pan_id(NMPlatform *platform, int ifindex) -{ - WPAN_GET_WPAN_DATA(wpan_data, platform, ifindex, G_MAXINT16); - return nm_wpan_utils_get_pan_id(wpan_data); -} - -static gboolean -wpan_set_pan_id(NMPlatform *platform, int ifindex, guint16 pan_id) -{ - WPAN_GET_WPAN_DATA(wpan_data, platform, ifindex, FALSE); - return nm_wpan_utils_set_pan_id(wpan_data, pan_id); -} - -static guint16 -wpan_get_short_addr(NMPlatform *platform, int ifindex) -{ - WPAN_GET_WPAN_DATA(wpan_data, platform, ifindex, G_MAXINT16); - return nm_wpan_utils_get_short_addr(wpan_data); -} - -static gboolean -wpan_set_short_addr(NMPlatform *platform, int ifindex, guint16 short_addr) -{ - WPAN_GET_WPAN_DATA(wpan_data, platform, ifindex, FALSE); - return nm_wpan_utils_set_short_addr(wpan_data, short_addr); -} - -static gboolean -wpan_set_channel(NMPlatform *platform, int ifindex, guint8 page, guint8 channel) -{ - WPAN_GET_WPAN_DATA(wpan_data, platform, ifindex, FALSE); - return nm_wpan_utils_set_channel(wpan_data, page, channel); -} - -/*****************************************************************************/ - -static gboolean -link_get_wake_on_lan(NMPlatform *platform, int ifindex) -{ - nm_auto_pop_netns NMPNetns *netns = NULL; - NMLinkType type = nm_platform_link_get_type(platform, ifindex); - - if (!nm_platform_netns_push(platform, &netns)) - return FALSE; - - if (type == NM_LINK_TYPE_ETHERNET) - return nmp_utils_ethtool_get_wake_on_lan(ifindex); - else if (type == NM_LINK_TYPE_WIFI) { - NMWifiUtils *wifi_data = NM_WIFI_UTILS(get_ext_data(platform, ifindex)); - - if (!wifi_data) - return FALSE; - - return !NM_IN_SET(nm_wifi_utils_get_wake_on_wlan(wifi_data), - NM_SETTING_WIRELESS_WAKE_ON_WLAN_NONE, - NM_SETTING_WIRELESS_WAKE_ON_WLAN_IGNORE); - - } else - return FALSE; -} - -static gboolean -link_get_driver_info(NMPlatform *platform, - int ifindex, - char ** out_driver_name, - char ** out_driver_version, - char ** out_fw_version) -{ - nm_auto_pop_netns NMPNetns *netns = NULL; - NMPUtilsEthtoolDriverInfo driver_info; - - if (!nm_platform_netns_push(platform, &netns)) - return FALSE; - - if (!nmp_utils_ethtool_get_driver_info(ifindex, &driver_info)) - return FALSE; - NM_SET_OUT(out_driver_name, g_strdup(driver_info.driver)); - NM_SET_OUT(out_driver_version, g_strdup(driver_info.version)); - NM_SET_OUT(out_fw_version, g_strdup(driver_info.fw_version)); - return TRUE; -} - -/*****************************************************************************/ - -static gboolean -ip4_address_add(NMPlatform *platform, - int ifindex, - in_addr_t addr, - guint8 plen, - in_addr_t peer_addr, - in_addr_t broadcast_address, - guint32 lifetime, - guint32 preferred, - guint32 flags, - const char *label) -{ - NMPObject obj_id; - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - - nlmsg = _nl_msg_new_address(RTM_NEWADDR, - NLM_F_CREATE | NLM_F_REPLACE, - AF_INET, - ifindex, - &addr, - plen, - &peer_addr, - flags, - nm_utils_ip4_address_is_link_local(addr) ? RT_SCOPE_LINK - : RT_SCOPE_UNIVERSE, - lifetime, - preferred, - broadcast_address, - label); - - nmp_object_stackinit_id_ip4_address(&obj_id, ifindex, addr, plen, peer_addr); - return (do_add_addrroute(platform, &obj_id, nlmsg, FALSE) >= 0); -} - -static gboolean -ip6_address_add(NMPlatform * platform, - int ifindex, - struct in6_addr addr, - guint8 plen, - struct in6_addr peer_addr, - guint32 lifetime, - guint32 preferred, - guint32 flags) -{ - NMPObject obj_id; - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - - nlmsg = _nl_msg_new_address(RTM_NEWADDR, - NLM_F_CREATE | NLM_F_REPLACE, - AF_INET6, - ifindex, - &addr, - plen, - IN6_IS_ADDR_UNSPECIFIED(&peer_addr) ? NULL : &peer_addr, - flags, - RT_SCOPE_UNIVERSE, - lifetime, - preferred, - 0, - NULL); - - nmp_object_stackinit_id_ip6_address(&obj_id, ifindex, &addr); - return (do_add_addrroute(platform, &obj_id, nlmsg, FALSE) >= 0); -} - -static gboolean -ip4_address_delete(NMPlatform *platform, - int ifindex, - in_addr_t addr, - guint8 plen, - in_addr_t peer_address) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - NMPObject obj_id; - - nlmsg = _nl_msg_new_address(RTM_DELADDR, - 0, - AF_INET, - ifindex, - &addr, - plen, - &peer_address, - 0, - RT_SCOPE_NOWHERE, - NM_PLATFORM_LIFETIME_PERMANENT, - NM_PLATFORM_LIFETIME_PERMANENT, - 0, - NULL); - if (!nlmsg) - g_return_val_if_reached(FALSE); - - nmp_object_stackinit_id_ip4_address(&obj_id, ifindex, addr, plen, peer_address); - return do_delete_object(platform, &obj_id, nlmsg); -} - -static gboolean -ip6_address_delete(NMPlatform *platform, int ifindex, struct in6_addr addr, guint8 plen) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - NMPObject obj_id; - - nlmsg = _nl_msg_new_address(RTM_DELADDR, - 0, - AF_INET6, - ifindex, - &addr, - plen, - NULL, - 0, - RT_SCOPE_NOWHERE, - NM_PLATFORM_LIFETIME_PERMANENT, - NM_PLATFORM_LIFETIME_PERMANENT, - 0, - NULL); - if (!nlmsg) - g_return_val_if_reached(FALSE); - - nmp_object_stackinit_id_ip6_address(&obj_id, ifindex, &addr); - return do_delete_object(platform, &obj_id, nlmsg); -} - -/*****************************************************************************/ - -static int -ip_route_add(NMPlatform * platform, - NMPNlmFlags flags, - int addr_family, - const NMPlatformIPRoute *route) -{ - nm_auto_nlmsg struct nl_msg *nlmsg = NULL; - NMPObject obj; - - nmp_object_stackinit(&obj, - NMP_OBJECT_TYPE_IP_ROUTE(NM_IS_IPv4(addr_family)), - (const NMPlatformObject *) route); - - nm_platform_ip_route_normalize(addr_family, NMP_OBJECT_CAST_IP_ROUTE(&obj)); - - nlmsg = _nl_msg_new_route(RTM_NEWROUTE, flags & NMP_NLM_FLAG_FMASK, &obj); - if (!nlmsg) - g_return_val_if_reached(-NME_BUG); - return do_add_addrroute(platform, - &obj, - nlmsg, - NM_FLAGS_HAS(flags, NMP_NLM_FLAG_SUPPRESS_NETLINK_FAILURE)); -} - -static gboolean -object_delete(NMPlatform *platform, const NMPObject *obj) -{ - nm_auto_nmpobj const NMPObject *obj_keep_alive = NULL; - nm_auto_nlmsg struct nl_msg * nlmsg = NULL; - - if (!NMP_OBJECT_IS_STACKINIT(obj)) - obj_keep_alive = nmp_object_ref(obj); - - switch (NMP_OBJECT_GET_TYPE(obj)) { - case NMP_OBJECT_TYPE_IP4_ROUTE: - case NMP_OBJECT_TYPE_IP6_ROUTE: - nlmsg = _nl_msg_new_route(RTM_DELROUTE, 0, obj); - break; - case NMP_OBJECT_TYPE_ROUTING_RULE: - nlmsg = _nl_msg_new_routing_rule(RTM_DELRULE, 0, NMP_OBJECT_CAST_ROUTING_RULE(obj)); - break; - case NMP_OBJECT_TYPE_QDISC: - nlmsg = _nl_msg_new_qdisc(RTM_DELQDISC, 0, NMP_OBJECT_CAST_QDISC(obj)); - break; - case NMP_OBJECT_TYPE_TFILTER: - nlmsg = _nl_msg_new_tfilter(RTM_DELTFILTER, 0, NMP_OBJECT_CAST_TFILTER(obj)); - break; - default: - break; - } - - if (!nlmsg) - g_return_val_if_reached(FALSE); - return do_delete_object(platform, obj, nlmsg); -} - -/*****************************************************************************/ - -static int -ip_route_get(NMPlatform * platform, - int addr_family, - gconstpointer address, - int oif_ifindex, - NMPObject ** out_route) -{ - const gboolean is_v4 = (addr_family == AF_INET); - const int addr_len = is_v4 ? 4 : 16; - int try_count = 0; - WaitForNlResponseResult seq_result; - int nle; - nm_auto_nmpobj NMPObject *route = NULL; - - nm_assert(NM_IS_LINUX_PLATFORM(platform)); - nm_assert(NM_IN_SET(addr_family, AF_INET, AF_INET6)); - nm_assert(address); - - do { - struct { - struct nlmsghdr n; - struct rtmsg r; - char buf[64]; - } req = { - .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)), - .n.nlmsg_flags = NLM_F_REQUEST, - .n.nlmsg_type = RTM_GETROUTE, - .r.rtm_family = addr_family, - .r.rtm_tos = 0, - .r.rtm_dst_len = is_v4 ? 32 : 128, - .r.rtm_flags = 0x1000 /* RTM_F_LOOKUP_TABLE */, - }; - - nm_clear_pointer(&route, nmp_object_unref); - - if (!_nl_addattr_l(&req.n, sizeof(req), RTA_DST, address, addr_len)) - nm_assert_not_reached(); - - if (oif_ifindex > 0) { - gint32 ii = oif_ifindex; - - if (!_nl_addattr_l(&req.n, sizeof(req), RTA_OIF, &ii, sizeof(ii))) - nm_assert_not_reached(); - } - - seq_result = WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN; - nle = _nl_send_nlmsghdr(platform, - &req.n, - &seq_result, - NULL, - DELAYED_ACTION_RESPONSE_TYPE_ROUTE_GET, - &route); - if (nle < 0) { - _LOGE("get-route: failure sending netlink request \"%s\" (%d)", - nm_strerror_native(-nle), - -nle); - return -NME_UNSPEC; - } - - delayed_action_handle_all(platform, FALSE); - - /* Retry, if we failed due to a cache resync. That can happen when the netlink - * socket fills up and we lost the response. */ - } while (seq_result == WAIT_FOR_NL_RESPONSE_RESULT_FAILED_RESYNC && ++try_count < 10); - - if (seq_result < 0) { - /* negative seq_result is an errno from kernel. Map it to negative - * int (which are also errno). */ - return (int) seq_result; - } - - if (seq_result == WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK) { - if (route) { - NM_SET_OUT(out_route, g_steal_pointer(&route)); - return 0; - } - seq_result = WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_UNKNOWN; - } - - return -NME_UNSPEC; -} - -/*****************************************************************************/ - -static int -routing_rule_add(NMPlatform *platform, NMPNlmFlags flags, const NMPlatformRoutingRule *routing_rule) -{ - WaitForNlResponseResult seq_result = WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN; - nm_auto_nlmsg struct nl_msg *msg = NULL; - gs_free char * errmsg = NULL; - char s_buf[256]; - int nle; - - msg = _nl_msg_new_routing_rule(RTM_NEWRULE, flags, routing_rule); - - event_handler_read_netlink(platform, FALSE); - - nle = _nl_send_nlmsg(platform, - msg, - &seq_result, - &errmsg, - DELAYED_ACTION_RESPONSE_TYPE_VOID, - NULL); - if (nle < 0) { - _LOGE("do-add-rule: failed sending netlink request \"%s\" (%d)", nm_strerror(nle), -nle); - return -NME_PL_NETLINK; - } - - delayed_action_handle_all(platform, FALSE); - - nm_assert(seq_result); - - _NMLOG(seq_result == WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK ? LOGL_DEBUG : LOGL_WARN, - "do-add-rule: %s", - wait_for_nl_response_to_string(seq_result, errmsg, s_buf, sizeof(s_buf))); - - if (seq_result == WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK) - return 0; - if (seq_result < 0) - return seq_result; - return -NME_UNSPEC; -} - -/*****************************************************************************/ - -static int -qdisc_add(NMPlatform *platform, NMPNlmFlags flags, const NMPlatformQdisc *qdisc) -{ - WaitForNlResponseResult seq_result = WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN; - gs_free char * errmsg = NULL; - int nle; - char s_buf[256]; - nm_auto_nlmsg struct nl_msg *msg = NULL; - - /* Note: @qdisc must not be copied or kept alive because the lifetime of qdisc.kind - * is undefined. */ - - msg = _nl_msg_new_qdisc(RTM_NEWQDISC, flags, qdisc); - - event_handler_read_netlink(platform, FALSE); - - nle = _nl_send_nlmsg(platform, - msg, - &seq_result, - &errmsg, - DELAYED_ACTION_RESPONSE_TYPE_VOID, - NULL); - if (nle < 0) { - _LOGE("do-add-qdisc: failed sending netlink request \"%s\" (%d)", nm_strerror(nle), -nle); - return -NME_PL_NETLINK; - } - - delayed_action_handle_all(platform, FALSE); - - nm_assert(seq_result); - - _NMLOG(seq_result == WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK ? LOGL_DEBUG : LOGL_WARN, - "do-add-qdisc: %s", - wait_for_nl_response_to_string(seq_result, errmsg, s_buf, sizeof(s_buf))); - - if (seq_result == WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK) - return 0; - if (seq_result < 0) - return seq_result; - return -NME_UNSPEC; -} - -/*****************************************************************************/ - -static int -tfilter_add(NMPlatform *platform, NMPNlmFlags flags, const NMPlatformTfilter *tfilter) -{ - WaitForNlResponseResult seq_result = WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN; - gs_free char * errmsg = NULL; - int nle; - char s_buf[256]; - nm_auto_nlmsg struct nl_msg *msg = NULL; - - /* Note: @tfilter must not be copied or kept alive because the lifetime of tfilter.kind - * and tfilter.action.kind is undefined. */ - - msg = _nl_msg_new_tfilter(RTM_NEWTFILTER, flags, tfilter); - - event_handler_read_netlink(platform, FALSE); - - nle = _nl_send_nlmsg(platform, - msg, - &seq_result, - &errmsg, - DELAYED_ACTION_RESPONSE_TYPE_VOID, - NULL); - if (nle < 0) { - _LOGE("do-add-tfilter: failed sending netlink request \"%s\" (%d)", nm_strerror(nle), -nle); - return -NME_PL_NETLINK; - } - - delayed_action_handle_all(platform, FALSE); - - nm_assert(seq_result); - - _NMLOG(seq_result == WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK ? LOGL_DEBUG : LOGL_WARN, - "do-add-tfilter: %s", - wait_for_nl_response_to_string(seq_result, errmsg, s_buf, sizeof(s_buf))); - - if (seq_result == WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK) - return 0; - - return -NME_UNSPEC; -} - -/*****************************************************************************/ - -static gboolean -event_handler(int fd, GIOCondition io_condition, gpointer user_data) -{ - delayed_action_handle_all(NM_PLATFORM(user_data), TRUE); - return TRUE; -} - -/*****************************************************************************/ - -/* copied from libnl3's recvmsgs() */ -static int -event_handler_recvmsgs(NMPlatform *platform, gboolean handle_events) -{ - NMLinuxPlatformPrivate * priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - struct nl_sock * sk = priv->nlh; - int n; - int err = 0; - gboolean multipart = 0; - gboolean interrupted = FALSE; - struct nlmsghdr * hdr; - WaitForNlResponseResult seq_result; - struct sockaddr_nl nla = {0}; - struct ucred creds; - gboolean creds_has; - nm_auto_free unsigned char *buf = NULL; - -continue_reading: - nm_clear_pointer(&buf, free); - n = nl_recv(sk, &nla, &buf, &creds, &creds_has); - - if (n <= 0) { - if (n == -NME_NL_MSG_TRUNC) { - int buf_size; - - /* the message receive buffer was too small. We lost one message, which - * is unfortunate. Try to double the buffer size for the next time. */ - buf_size = nl_socket_get_msg_buf_size(sk); - if (buf_size < 512 * 1024) { - buf_size *= 2; - _LOGT("netlink: recvmsg: increase message buffer size for recvmsg() to %d bytes", - buf_size); - if (nl_socket_set_msg_buf_size(sk, buf_size) < 0) - nm_assert_not_reached(); - if (!handle_events) - goto continue_reading; - } - } - - return n; - } - - hdr = (struct nlmsghdr *) buf; - while (nlmsg_ok(hdr, n)) { - nm_auto_nlmsg struct nl_msg *msg = NULL; - gboolean abort_parsing = FALSE; - gboolean process_valid_msg = FALSE; - guint32 seq_number; - char buf_nlmsghdr[400]; - const char * extack_msg = NULL; - - msg = nlmsg_alloc_convert(hdr); - - nlmsg_set_proto(msg, NETLINK_ROUTE); - nlmsg_set_src(msg, &nla); - - if (!creds_has || creds.pid) { - if (!creds_has) - _LOGT("netlink: recvmsg: received message without credentials"); - else - _LOGT("netlink: recvmsg: received non-kernel message (pid %d)", creds.pid); - err = 0; - goto stop; - } - - _LOGt("netlink: recvmsg: new message %s", - nl_nlmsghdr_to_str(hdr, buf_nlmsghdr, sizeof(buf_nlmsghdr))); - - nlmsg_set_creds(msg, &creds); - - if (hdr->nlmsg_flags & NLM_F_MULTI) - multipart = TRUE; - - if (hdr->nlmsg_flags & NLM_F_DUMP_INTR) { - /* - * We have to continue reading to clear - * all messages until a NLMSG_DONE is - * received and report the inconsistency. - */ - interrupted = TRUE; - } - - /* Other side wishes to see an ack for this message */ - if (hdr->nlmsg_flags & NLM_F_ACK) { - /* FIXME: implement */ - } - - seq_result = WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_UNKNOWN; - - if (hdr->nlmsg_type == NLMSG_DONE) { - /* messages terminates a multipart message, this is - * usually the end of a message and therefore we slip - * out of the loop by default. the user may overrule - * this action by skipping this packet. */ - multipart = FALSE; - seq_result = WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK; - } else if (hdr->nlmsg_type == NLMSG_NOOP) { - /* Message to be ignored, the default action is to - * skip this message if no callback is specified. The - * user may overrule this action by returning - * NL_PROCEED. */ - } else if (hdr->nlmsg_type == NLMSG_OVERRUN) { - /* Data got lost, report back to user. The default action is to - * quit parsing. The user may overrule this action by returning - * NL_SKIP or NL_PROCEED (dangerous) */ - err = -NME_NL_MSG_OVERFLOW; - abort_parsing = TRUE; - } else if (hdr->nlmsg_type == NLMSG_ERROR) { - /* Message carries a nlmsgerr */ - struct nlmsgerr *e = nlmsg_data(hdr); - - if (hdr->nlmsg_len < nlmsg_size(sizeof(*e))) { - /* Truncated error message, the default action - * is to stop parsing. The user may overrule - * this action by returning NL_SKIP or - * NL_PROCEED (dangerous) */ - err = -NME_NL_MSG_TRUNC; - abort_parsing = TRUE; - } else if (e->error) { - int errsv = nm_errno_native(e->error); - - if (NM_FLAGS_HAS(hdr->nlmsg_flags, NLM_F_ACK_TLVS) - && hdr->nlmsg_len >= sizeof(*e) + e->msg.nlmsg_len) { - static const struct nla_policy policy[] = { - [NLMSGERR_ATTR_MSG] = {.type = NLA_STRING}, - [NLMSGERR_ATTR_OFFS] = {.type = NLA_U32}, - }; - struct nlattr *tb[G_N_ELEMENTS(policy)]; - struct nlattr *tlvs; - - tlvs = (struct nlattr *) ((char *) e + sizeof(*e) + e->msg.nlmsg_len - - NLMSG_HDRLEN); - if (nla_parse_arr(tb, - tlvs, - hdr->nlmsg_len - sizeof(*e) - e->msg.nlmsg_len, - policy) - >= 0) { - if (tb[NLMSGERR_ATTR_MSG]) - extack_msg = nla_get_string(tb[NLMSGERR_ATTR_MSG]); - } - } - - /* Error message reported back from kernel. */ - _LOGD("netlink: recvmsg: error message from kernel: %s (%d)%s%s%s for request %d", - nm_strerror_native(errsv), - errsv, - NM_PRINT_FMT_QUOTED(extack_msg, " \"", extack_msg, "\"", ""), - nlmsg_hdr(msg)->nlmsg_seq); - seq_result = -NM_ERRNO_NATIVE(errsv); - } else - seq_result = WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK; - } else - process_valid_msg = TRUE; - - seq_number = nlmsg_hdr(msg)->nlmsg_seq; - - /* check whether the seq number is different from before, and - * whether the previous number (@nlh_seq_last_seen) is a pending - * refresh-all request. In that case, the pending request is thereby - * completed. - * - * We must do that before processing the message with event_valid_msg(), - * because we must track the completion of the pending request before that. */ - event_seq_check_refresh_all(platform, seq_number); - - if (process_valid_msg) { - /* Valid message (not checking for MULTIPART bit to - * get along with broken kernels. NL_SKIP has no - * effect on this. */ - - event_valid_msg(platform, msg, handle_events); - - seq_result = WAIT_FOR_NL_RESPONSE_RESULT_RESPONSE_OK; - } - - event_seq_check(platform, seq_number, seq_result, extack_msg); - - if (abort_parsing) - goto stop; - - err = 0; - hdr = nlmsg_next(hdr, &n); - } - - if (multipart) { - /* Multipart message not yet complete, continue reading */ - goto continue_reading; - } -stop: - if (!handle_events) { - /* when we don't handle events, we want to drain all messages from the socket - * without handling the messages (but still check for sequence numbers). - * Repeat reading. */ - goto continue_reading; - } - - if (interrupted) - return -NME_NL_DUMP_INTR; - return err; -} - -/*****************************************************************************/ - -static gboolean -event_handler_read_netlink(NMPlatform *platform, gboolean wait_for_acks) -{ - nm_auto_pop_netns NMPNetns *netns = NULL; - NMLinuxPlatformPrivate * priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - int r; - struct pollfd pfd; - gboolean any = FALSE; - int timeout_msec; - struct { - guint32 seq_number; - gint64 timeout_abs_ns; - gint64 now_ns; - } next; - - if (!nm_platform_netns_push(platform, &netns)) { - delayed_action_wait_for_nl_response_complete_all(platform, - WAIT_FOR_NL_RESPONSE_RESULT_FAILED_SETNS); - return FALSE; - } - - for (;;) { - for (;;) { - int nle; - - nle = event_handler_recvmsgs(platform, TRUE); - - if (nle < 0) { - switch (nle) { - case -EAGAIN: - goto after_read; - case -NME_NL_DUMP_INTR: - _LOGD("netlink: read: uncritical failure to retrieve incoming events: %s (%d)", - nm_strerror(nle), - nle); - break; - case -NME_NL_MSG_TRUNC: - case -ENOBUFS: - _LOGI("netlink: read: %s. Need to resynchronize platform cache", ({ - const char *_reason = "unknown"; - switch (nle) { - case -NME_NL_MSG_TRUNC: - _reason = "message truncated"; - break; - case -ENOBUFS: - _reason = "too many netlink events"; - break; - } - _reason; - })); - event_handler_recvmsgs(platform, FALSE); - delayed_action_wait_for_nl_response_complete_all( - platform, - WAIT_FOR_NL_RESPONSE_RESULT_FAILED_RESYNC); - - delayed_action_schedule(platform, - DELAYED_ACTION_TYPE_REFRESH_ALL_LINKS - | DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ADDRESSES - | DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ADDRESSES - | DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ROUTES - | DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ROUTES - | DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_ALL - | DELAYED_ACTION_TYPE_REFRESH_ALL_QDISCS - | DELAYED_ACTION_TYPE_REFRESH_ALL_TFILTERS, - NULL); - break; - default: - _LOGE("netlink: read: failed to retrieve incoming events: %s (%d)", - nm_strerror(nle), - nle); - break; - } - } - any = TRUE; - } - -after_read: - - if (!NM_FLAGS_HAS(priv->delayed_action.flags, DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE)) - return any; - - delayed_action_wait_for_nl_response_complete_check(platform, - WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN, - &next.seq_number, - &next.timeout_abs_ns, - &next.now_ns); - - if (!wait_for_acks - || !NM_FLAGS_HAS(priv->delayed_action.flags, DELAYED_ACTION_TYPE_WAIT_FOR_NL_RESPONSE)) - return any; - - nm_assert(next.seq_number); - nm_assert(next.now_ns > 0); - nm_assert(next.timeout_abs_ns > next.now_ns); - - _LOGT("netlink: read: wait for ACK for sequence number %u...", next.seq_number); - - timeout_msec = (next.timeout_abs_ns - next.now_ns) / (NM_UTILS_NSEC_PER_SEC / 1000); - - memset(&pfd, 0, sizeof(pfd)); - pfd.fd = nl_socket_get_fd(priv->nlh); - pfd.events = POLLIN; - r = poll(&pfd, 1, MAX(1, timeout_msec)); - - if (r == 0) { - /* timeout and there is nothing to read. */ - goto after_read; - } - - if (r < 0) { - int errsv = errno; - - if (errsv != EINTR) { - _LOGE("netlink: read: poll failed with %s", nm_strerror_native(errsv)); - delayed_action_wait_for_nl_response_complete_all( - platform, - WAIT_FOR_NL_RESPONSE_RESULT_FAILED_POLL); - return any; - } - /* Continue to read again, even if there might be nothing to read after EINTR. */ - } - } -} - -/*****************************************************************************/ - -static void -cache_update_link_udev(NMPlatform *platform, int ifindex, struct udev_device *udevice) -{ - nm_auto_nmpobj const NMPObject *obj_old = NULL; - nm_auto_nmpobj const NMPObject *obj_new = NULL; - NMPCacheOpsType cache_op; - - cache_op = nmp_cache_update_link_udev(nm_platform_get_cache(platform), - ifindex, - udevice, - &obj_old, - &obj_new); - - if (cache_op != NMP_CACHE_OPS_UNCHANGED) { - nm_auto_pop_netns NMPNetns *netns = NULL; - - cache_on_change(platform, cache_op, obj_old, obj_new); - if (!nm_platform_netns_push(platform, &netns)) - return; - nm_platform_cache_update_emit_signal(platform, cache_op, obj_old, obj_new); - } -} - -static void -udev_device_added(NMPlatform *platform, struct udev_device *udevice) -{ - const char *ifname; - const char *ifindex_s; - int ifindex; - - ifname = udev_device_get_sysname(udevice); - if (!ifname) { - _LOGD("udev-add: failed to get device's interface"); - return; - } - - ifindex_s = udev_device_get_property_value(udevice, "IFINDEX"); - if (!ifindex_s) { - _LOGW("udev-add[%s]failed to get device's ifindex", ifname); - return; - } - ifindex = _nm_utils_ascii_str_to_int64(ifindex_s, 10, 1, G_MAXINT, 0); - if (ifindex <= 0) { - _LOGW("udev-add[%s]: retrieved invalid IFINDEX=%d", ifname, ifindex); - return; - } - - if (!udev_device_get_syspath(udevice)) { - _LOGD("udev-add[%s,%d]: couldn't determine device path; ignoring...", ifname, ifindex); - return; - } - - _LOGT("udev-add[%s,%d]: device added", ifname, ifindex); - cache_update_link_udev(platform, ifindex, udevice); -} - -static gboolean -_udev_device_removed_match_link(const NMPObject *obj, gpointer udevice) -{ - return obj->_link.udev.device == udevice; -} - -static void -udev_device_removed(NMPlatform *platform, struct udev_device *udevice) -{ - const char *ifindex_s; - int ifindex = 0; - - ifindex_s = udev_device_get_property_value(udevice, "IFINDEX"); - ifindex = _nm_utils_ascii_str_to_int64(ifindex_s, 10, 1, G_MAXINT, 0); - if (ifindex <= 0) { - const NMPObject *obj; - - obj = nmp_cache_lookup_link_full(nm_platform_get_cache(platform), - 0, - NULL, - FALSE, - NM_LINK_TYPE_NONE, - _udev_device_removed_match_link, - udevice); - if (obj) - ifindex = obj->link.ifindex; - } - - _LOGD("udev-remove: IFINDEX=%d", ifindex); - if (ifindex <= 0) - return; - - cache_update_link_udev(platform, ifindex, NULL); -} - -static void -handle_udev_event(NMUdevClient *udev_client, struct udev_device *udevice, gpointer user_data) -{ - nm_auto_pop_netns NMPNetns *netns = NULL; - NMPlatform * platform = NM_PLATFORM(user_data); - const char * subsys; - const char * ifindex; - guint64 seqnum; - const char * action; - - action = udev_device_get_action(udevice); - g_return_if_fail(action); - - subsys = udev_device_get_subsystem(udevice); - g_return_if_fail(nm_streq0(subsys, "net")); - - if (!nm_platform_netns_push(platform, &netns)) - return; - - ifindex = udev_device_get_property_value(udevice, "IFINDEX"); - seqnum = udev_device_get_seqnum(udevice); - _LOGD("UDEV event: action '%s' subsys '%s' device '%s' (%s); seqnum=%" G_GUINT64_FORMAT, - action, - subsys, - udev_device_get_sysname(udevice), - ifindex ?: "unknown", - seqnum); - - if (NM_IN_STRSET(action, "add", "move")) - udev_device_added(platform, udevice); - else if (NM_IN_STRSET(action, "remove")) - udev_device_removed(platform, udevice); -} - -/*****************************************************************************/ - -void -nm_linux_platform_setup(void) -{ - nm_platform_setup(nm_linux_platform_new(FALSE, FALSE)); -} - -/*****************************************************************************/ - -static void -nm_linux_platform_init(NMLinuxPlatform *self) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(self); - - priv->delayed_action.list_master_connected = g_ptr_array_new(); - priv->delayed_action.list_refresh_link = g_ptr_array_new(); - priv->delayed_action.list_wait_for_nl_response = - g_array_new(FALSE, TRUE, sizeof(DelayedActionWaitForNlResponseData)); -} - -static void -constructed(GObject *_object) -{ - NMPlatform * platform = NM_PLATFORM(_object); - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - int nle; - int fd; - - nm_assert(!platform->_netns || platform->_netns == nmp_netns_get_current()); - - if (nm_platform_get_use_udev(platform)) { - priv->udev_client = nm_udev_client_new(NM_MAKE_STRV("net"), handle_udev_event, platform); - } - - _LOGD("create (%s netns, %s, %s udev)", - !platform->_netns ? "ignore" : "use", - !platform->_netns && nmp_netns_is_initial() - ? "initial netns" - : (!nmp_netns_get_current() - ? "no netns support" - : nm_sprintf_bufa(100, - "in netns[%p]%s", - nmp_netns_get_current(), - nmp_netns_get_current() == nmp_netns_get_initial() ? "/main" - : "")), - nm_platform_get_use_udev(platform) ? "use" : "no"); - - priv->genl = nl_socket_alloc(); - g_assert(priv->genl); - - nle = nl_connect(priv->genl, NETLINK_GENERIC); - if (nle) { - _LOGE("unable to connect the generic netlink socket \"%s\" (%d)", nm_strerror(nle), -nle); - nl_socket_free(priv->genl); - priv->genl = NULL; - } - - priv->nlh = nl_socket_alloc(); - g_assert(priv->nlh); - - nle = nl_connect(priv->nlh, NETLINK_ROUTE); - g_assert(!nle); - nle = nl_socket_set_passcred(priv->nlh, 1); - g_assert(!nle); - - /* No blocking for event socket, so that we can drain it safely. */ - nle = nl_socket_set_nonblocking(priv->nlh); - g_assert(!nle); - - /* use 8 MB for receive socket kernel queue. */ - nle = nl_socket_set_buffer_size(priv->nlh, 8 * 1024 * 1024, 0); - g_assert(!nle); - - nle = nl_socket_set_ext_ack(priv->nlh, TRUE); - if (nle) - _LOGD("could not enable extended acks on netlink socket"); - - /* explicitly set the msg buffer size and disable MSG_PEEK. - * If we later encounter NME_NL_MSG_TRUNC, we will adjust the buffer size. */ - nl_socket_disable_msg_peek(priv->nlh); - nle = nl_socket_set_msg_buf_size(priv->nlh, 32 * 1024); - g_assert(!nle); - - nle = nl_socket_add_memberships(priv->nlh, - RTNLGRP_IPV4_IFADDR, - RTNLGRP_IPV4_ROUTE, - RTNLGRP_IPV4_RULE, - RTNLGRP_IPV6_RULE, - RTNLGRP_IPV6_IFADDR, - RTNLGRP_IPV6_ROUTE, - RTNLGRP_LINK, - RTNLGRP_TC, - 0); - g_assert(!nle); - - fd = nl_socket_get_fd(priv->nlh); - - _LOGD("Netlink socket for events established: port=%u, fd=%d", - nl_socket_get_local_port(priv->nlh), - fd); - - priv->event_source = - nm_g_unix_fd_source_new(fd, - G_IO_IN | G_IO_NVAL | G_IO_PRI | G_IO_ERR | G_IO_HUP, - G_PRIORITY_DEFAULT, - event_handler, - platform, - NULL); - g_source_attach(priv->event_source, NULL); - - /* complete construction of the GObject instance before populating the cache. */ - G_OBJECT_CLASS(nm_linux_platform_parent_class)->constructed(_object); - - _LOGD("populate platform cache"); - delayed_action_schedule( - platform, - DELAYED_ACTION_TYPE_REFRESH_ALL_LINKS | DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ADDRESSES - | DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ADDRESSES - | DELAYED_ACTION_TYPE_REFRESH_ALL_IP4_ROUTES - | DELAYED_ACTION_TYPE_REFRESH_ALL_IP6_ROUTES - | DELAYED_ACTION_TYPE_REFRESH_ALL_ROUTING_RULES_ALL - | DELAYED_ACTION_TYPE_REFRESH_ALL_QDISCS | DELAYED_ACTION_TYPE_REFRESH_ALL_TFILTERS, - NULL); - - delayed_action_handle_all(platform, FALSE); - - /* Set up udev monitoring */ - if (priv->udev_client) { - struct udev_enumerate * enumerator; - struct udev_list_entry *devices, *l; - - /* And read initial device list */ - enumerator = nm_udev_client_enumerate_new(priv->udev_client); - - udev_enumerate_add_match_is_initialized(enumerator); - - udev_enumerate_scan_devices(enumerator); - - devices = udev_enumerate_get_list_entry(enumerator); - for (l = devices; l; l = udev_list_entry_get_next(l)) { - struct udev_device *udevice; - - udevice = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerator), - udev_list_entry_get_name(l)); - if (!udevice) - continue; - - udev_device_added(platform, udevice); - udev_device_unref(udevice); - } - - udev_enumerate_unref(enumerator); - } -} - -/* Similar to systemd's path_is_read_only_fs(), at - * https://github.com/systemd/systemd/blob/v246/src/basic/stat-util.c#L132 */ -static int -path_is_read_only_fs(const char *path) -{ - struct statvfs st; - - if (statvfs(path, &st) < 0) - return -errno; - - if (st.f_flag & ST_RDONLY) - return TRUE; - - /* On NFS, statvfs() might not reflect whether we can actually - * write to the remote share. Let's try again with - * access(W_OK) which is more reliable, at least sometimes. */ - if (access(path, W_OK) < 0 && errno == EROFS) - return TRUE; - - return FALSE; -} - -NMPlatform * -nm_linux_platform_new(gboolean log_with_ptr, gboolean netns_support) -{ - gboolean use_udev = FALSE; - - if (nmp_netns_is_initial() && path_is_read_only_fs("/sys") == FALSE) - use_udev = TRUE; - - return g_object_new(NM_TYPE_LINUX_PLATFORM, - NM_PLATFORM_LOG_WITH_PTR, - log_with_ptr, - NM_PLATFORM_USE_UDEV, - use_udev, - NM_PLATFORM_NETNS_SUPPORT, - netns_support, - NULL); -} - -static void -dispose(GObject *object) -{ - NMPlatform * platform = NM_PLATFORM(object); - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform); - - _LOGD("dispose"); - - delayed_action_wait_for_nl_response_complete_all(platform, - WAIT_FOR_NL_RESPONSE_RESULT_FAILED_DISPOSING); - - priv->delayed_action.flags = DELAYED_ACTION_TYPE_NONE; - g_ptr_array_set_size(priv->delayed_action.list_master_connected, 0); - g_ptr_array_set_size(priv->delayed_action.list_refresh_link, 0); - - G_OBJECT_CLASS(nm_linux_platform_parent_class)->dispose(object); -} - -static void -finalize(GObject *object) -{ - NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(object); - - g_ptr_array_unref(priv->delayed_action.list_master_connected); - g_ptr_array_unref(priv->delayed_action.list_refresh_link); - g_array_unref(priv->delayed_action.list_wait_for_nl_response); - - nl_socket_free(priv->genl); - - nm_clear_g_source_inst(&priv->event_source); - - nl_socket_free(priv->nlh); - - if (priv->sysctl_get_prev_values) { - sysctl_clear_cache_list = g_slist_remove(sysctl_clear_cache_list, object); - g_hash_table_destroy(priv->sysctl_get_prev_values); - } - - priv->udev_client = nm_udev_client_destroy(priv->udev_client); - - G_OBJECT_CLASS(nm_linux_platform_parent_class)->finalize(object); -} - -static void -nm_linux_platform_class_init(NMLinuxPlatformClass *klass) -{ - GObjectClass * object_class = G_OBJECT_CLASS(klass); - NMPlatformClass *platform_class = NM_PLATFORM_CLASS(klass); - - object_class->constructed = constructed; - object_class->dispose = dispose; - object_class->finalize = finalize; - - platform_class->sysctl_set = sysctl_set; - platform_class->sysctl_set_async = sysctl_set_async; - platform_class->sysctl_get = sysctl_get; - - platform_class->link_add = link_add; - platform_class->link_delete = link_delete; - - platform_class->link_refresh = link_refresh; - - platform_class->link_set_netns = link_set_netns; - - platform_class->link_set_up = link_set_up; - platform_class->link_set_down = link_set_down; - platform_class->link_set_arp = link_set_arp; - platform_class->link_set_noarp = link_set_noarp; - - platform_class->link_set_user_ipv6ll_enabled = link_set_user_ipv6ll_enabled; - platform_class->link_set_token = link_set_token; - - platform_class->link_set_address = link_set_address; - platform_class->link_get_permanent_address = link_get_permanent_address; - platform_class->link_set_mtu = link_set_mtu; - platform_class->link_set_name = link_set_name; - platform_class->link_set_sriov_params_async = link_set_sriov_params_async; - platform_class->link_set_sriov_vfs = link_set_sriov_vfs; - platform_class->link_set_bridge_vlans = link_set_bridge_vlans; - - platform_class->link_get_physical_port_id = link_get_physical_port_id; - platform_class->link_get_dev_id = link_get_dev_id; - platform_class->link_get_wake_on_lan = link_get_wake_on_lan; - platform_class->link_get_driver_info = link_get_driver_info; - - platform_class->link_supports_carrier_detect = link_supports_carrier_detect; - platform_class->link_supports_vlans = link_supports_vlans; - platform_class->link_supports_sriov = link_supports_sriov; - - platform_class->link_enslave = link_enslave; - platform_class->link_release = link_release; - - platform_class->link_can_assume = link_can_assume; - - platform_class->link_vlan_change = link_vlan_change; - platform_class->link_wireguard_change = link_wireguard_change; - - platform_class->infiniband_partition_add = infiniband_partition_add; - platform_class->infiniband_partition_delete = infiniband_partition_delete; - - platform_class->wifi_get_capabilities = wifi_get_capabilities; - platform_class->wifi_get_frequency = wifi_get_frequency; - platform_class->wifi_get_station = wifi_get_station; - platform_class->wifi_get_mode = wifi_get_mode; - platform_class->wifi_set_mode = wifi_set_mode; - platform_class->wifi_set_powersave = wifi_set_powersave; - platform_class->wifi_find_frequency = wifi_find_frequency; - platform_class->wifi_indicate_addressing_running = wifi_indicate_addressing_running; - platform_class->wifi_get_wake_on_wlan = wifi_get_wake_on_wlan; - platform_class->wifi_set_wake_on_wlan = wifi_set_wake_on_wlan; - - platform_class->mesh_get_channel = mesh_get_channel; - platform_class->mesh_set_channel = mesh_set_channel; - platform_class->mesh_set_ssid = mesh_set_ssid; - - platform_class->wpan_get_pan_id = wpan_get_pan_id; - platform_class->wpan_set_pan_id = wpan_set_pan_id; - platform_class->wpan_get_short_addr = wpan_get_short_addr; - platform_class->wpan_set_short_addr = wpan_set_short_addr; - platform_class->wpan_set_channel = wpan_set_channel; - - platform_class->link_tun_add = link_tun_add; - - platform_class->object_delete = object_delete; - platform_class->ip4_address_add = ip4_address_add; - platform_class->ip6_address_add = ip6_address_add; - platform_class->ip4_address_delete = ip4_address_delete; - platform_class->ip6_address_delete = ip6_address_delete; - - platform_class->ip_route_add = ip_route_add; - platform_class->ip_route_get = ip_route_get; - - platform_class->routing_rule_add = routing_rule_add; - - platform_class->qdisc_add = qdisc_add; - platform_class->tfilter_add = tfilter_add; - - platform_class->process_events = process_events; -} |