2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
5 * Copyright (C) 2013 Steven Barth <steven@midlink.org>
6 * Copyright (C) 2014 Gioacchino Mazzurco <gio@eigenlab.org>
7 * Copyright (C) 2017 Matthias Schiffer <mschiffer@universe-factory.net>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2
11 * as published by the Free Software Foundation
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
20 #include <sys/socket.h>
21 #include <sys/ioctl.h>
23 #include <sys/syscall.h>
26 #include <net/if_arp.h>
28 #include <arpa/inet.h>
29 #include <netinet/ether.h>
30 #include <netinet/in.h>
32 #include <linux/rtnetlink.h>
33 #include <linux/sockios.h>
35 #include <linux/if_addr.h>
36 #include <linux/if_link.h>
37 #include <linux/if_vlan.h>
38 #include <linux/if_bridge.h>
39 #include <linux/if_tunnel.h>
40 #include <linux/ip6_tunnel.h>
41 #include <linux/ethtool.h>
42 #include <linux/fib_rules.h>
43 #include <linux/veth.h>
44 #include <linux/version.h>
46 #ifndef RTN_FAILED_POLICY
47 #define RTN_FAILED_POLICY 12
50 #ifndef IFA_F_NOPREFIXROUTE
51 #define IFA_F_NOPREFIXROUTE 0x200
55 #define IFA_FLAGS (IFA_MULTICAST + 1)
64 #include <netlink/msg.h>
65 #include <netlink/attr.h>
66 #include <netlink/socket.h>
67 #include <libubox/uloop.h>
74 struct uloop_fd uloop;
79 static int sock_ioctl = -1;
80 static struct nl_sock *sock_rtnl = NULL;
82 static int cb_rtnl_event(struct nl_msg *msg, void *arg);
83 static void handle_hotplug_event(struct uloop_fd *u, unsigned int events);
84 static int system_add_proto_tunnel(const char *name, const uint8_t proto,
85 const unsigned int link, struct blob_attr **tb);
86 static int __system_del_ip_tunnel(const char *name, struct blob_attr **tb);
88 static char dev_buf[256];
91 handler_nl_event(struct uloop_fd *u, unsigned int events)
93 struct event_socket *ev = container_of(u, struct event_socket, uloop);
95 socklen_t errlen = sizeof(err);
98 nl_recvmsgs_default(ev->sock);
102 if (getsockopt(u->fd, SOL_SOCKET, SO_ERROR, (void *)&err, &errlen))
107 // Increase rx buffer size on netlink socket
109 if (nl_socket_set_buffer_size(ev->sock, ev->bufsize, 0))
112 // Request full dump since some info got dropped
113 struct rtgenmsg msg = { .rtgen_family = AF_UNSPEC };
114 nl_send_simple(ev->sock, RTM_GETLINK, NLM_F_DUMP, &msg, sizeof(msg));
124 uloop_fd_delete(&ev->uloop);
128 static struct nl_sock *
129 create_socket(int protocol, int groups)
131 struct nl_sock *sock;
133 sock = nl_socket_alloc();
138 nl_join_groups(sock, groups);
140 if (nl_connect(sock, protocol))
147 create_raw_event_socket(struct event_socket *ev, int protocol, int groups,
148 uloop_fd_handler cb, int flags)
150 ev->sock = create_socket(protocol, groups);
154 ev->uloop.fd = nl_socket_get_fd(ev->sock);
156 if (uloop_fd_add(&ev->uloop, ULOOP_READ|flags))
163 create_event_socket(struct event_socket *ev, int protocol,
164 int (*cb)(struct nl_msg *msg, void *arg))
166 if (!create_raw_event_socket(ev, protocol, 0, handler_nl_event, ULOOP_ERROR_CB))
169 // Install the valid custom callback handler
170 nl_socket_modify_cb(ev->sock, NL_CB_VALID, NL_CB_CUSTOM, cb, NULL);
172 // Disable sequence number checking on event sockets
173 nl_socket_disable_seq_check(ev->sock);
175 // Increase rx buffer size to 65K on event sockets
177 if (nl_socket_set_buffer_size(ev->sock, ev->bufsize, 0))
184 system_rtn_aton(const char *src, unsigned int *dst)
189 if (!strcmp(src, "local"))
191 else if (!strcmp(src, "nat"))
193 else if (!strcmp(src, "broadcast"))
195 else if (!strcmp(src, "anycast"))
197 else if (!strcmp(src, "multicast"))
199 else if (!strcmp(src, "prohibit"))
201 else if (!strcmp(src, "unreachable"))
203 else if (!strcmp(src, "blackhole"))
205 else if (!strcmp(src, "xresolve"))
207 else if (!strcmp(src, "unicast"))
209 else if (!strcmp(src, "throw"))
211 else if (!strcmp(src, "failed_policy"))
212 n = RTN_FAILED_POLICY;
214 n = strtoul(src, &e, 0);
215 if (!e || *e || e == src || n > 255)
224 system_tos_aton(const char *src, unsigned *dst)
228 *dst = strtoul(src, &e, 16);
229 if (e == src || *e || *dst > 255)
235 int system_init(void)
237 static struct event_socket rtnl_event;
238 static struct event_socket hotplug_event;
240 sock_ioctl = socket(AF_LOCAL, SOCK_DGRAM, 0);
241 system_fd_set_cloexec(sock_ioctl);
243 // Prepare socket for routing / address control
244 sock_rtnl = create_socket(NETLINK_ROUTE, 0);
248 if (!create_event_socket(&rtnl_event, NETLINK_ROUTE, cb_rtnl_event))
251 if (!create_raw_event_socket(&hotplug_event, NETLINK_KOBJECT_UEVENT, 1,
252 handle_hotplug_event, 0))
255 // Receive network link events form kernel
256 nl_socket_add_membership(rtnl_event.sock, RTNLGRP_LINK);
261 static void system_set_sysctl(const char *path, const char *val)
265 fd = open(path, O_WRONLY);
269 if (write(fd, val, strlen(val))) {}
273 static void system_set_dev_sysctl(const char *path, const char *device, const char *val)
275 snprintf(dev_buf, sizeof(dev_buf), path, device);
276 system_set_sysctl(dev_buf, val);
279 static void system_set_disable_ipv6(struct device *dev, const char *val)
281 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev->ifname, val);
284 static void system_set_rpfilter(struct device *dev, const char *val)
286 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter", dev->ifname, val);
289 static void system_set_acceptlocal(struct device *dev, const char *val)
291 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local", dev->ifname, val);
294 static void system_set_igmpversion(struct device *dev, const char *val)
296 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version", dev->ifname, val);
299 static void system_set_mldversion(struct device *dev, const char *val)
301 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version", dev->ifname, val);
304 static void system_set_neigh4reachabletime(struct device *dev, const char *val)
306 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms", dev->ifname, val);
309 static void system_set_neigh6reachabletime(struct device *dev, const char *val)
311 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms", dev->ifname, val);
314 static void system_set_neigh4gcstaletime(struct device *dev, const char *val)
316 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time", dev->ifname, val);
319 static void system_set_neigh6gcstaletime(struct device *dev, const char *val)
321 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time", dev->ifname, val);
324 static void system_set_neigh4locktime(struct device *dev, const char *val)
326 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime", dev->ifname, val);
329 static void system_set_dadtransmits(struct device *dev, const char *val)
331 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits", dev->ifname, val);
334 static void system_bridge_set_multicast_to_unicast(struct device *dev, const char *val)
336 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_to_unicast", dev->ifname, val);
339 static void system_bridge_set_multicast_fast_leave(struct device *dev, const char *val)
341 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_fast_leave", dev->ifname, val);
344 static void system_bridge_set_hairpin_mode(struct device *dev, const char *val)
346 system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev->ifname, val);
349 static void system_bridge_set_multicast_router(struct device *dev, const char *val, bool bridge)
351 system_set_dev_sysctl(bridge ? "/sys/class/net/%s/bridge/multicast_router" :
352 "/sys/class/net/%s/brport/multicast_router",
356 static void system_bridge_set_robustness(struct device *dev, const char *val)
358 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_count",
360 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_count",
364 static void system_bridge_set_query_interval(struct device *dev, const char *val)
366 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_interval",
370 static void system_bridge_set_query_response_interval(struct device *dev, const char *val)
372 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_response_interval",
376 static void system_bridge_set_last_member_interval(struct device *dev, const char *val)
378 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_interval",
382 static void system_bridge_set_membership_interval(struct device *dev, const char *val)
384 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_membership_interval",
388 static void system_bridge_set_other_querier_timeout(struct device *dev, const char *val)
390 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier_interval",
394 static void system_bridge_set_startup_query_interval(struct device *dev, const char *val)
396 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_interval",
400 static void system_bridge_set_learning(struct device *dev, const char *val)
402 system_set_dev_sysctl("/sys/class/net/%s/brport/learning", dev->ifname, val);
405 static void system_bridge_set_unicast_flood(struct device *dev, const char *val)
407 system_set_dev_sysctl("/sys/class/net/%s/brport/unicast_flood", dev->ifname, val);
410 static void system_set_sendredirects(struct device *dev, const char *val)
412 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects", dev->ifname, val);
415 static int system_get_sysctl(const char *path, char *buf, const size_t buf_sz)
417 int fd = -1, ret = -1;
419 fd = open(path, O_RDONLY);
423 ssize_t len = read(fd, buf, buf_sz - 1);
437 system_get_dev_sysctl(const char *path, const char *device, char *buf, const size_t buf_sz)
439 snprintf(dev_buf, sizeof(dev_buf), path, device);
440 return system_get_sysctl(dev_buf, buf, buf_sz);
443 static int system_get_disable_ipv6(struct device *dev, char *buf, const size_t buf_sz)
445 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
446 dev->ifname, buf, buf_sz);
449 static int system_get_rpfilter(struct device *dev, char *buf, const size_t buf_sz)
451 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
452 dev->ifname, buf, buf_sz);
455 static int system_get_acceptlocal(struct device *dev, char *buf, const size_t buf_sz)
457 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
458 dev->ifname, buf, buf_sz);
461 static int system_get_igmpversion(struct device *dev, char *buf, const size_t buf_sz)
463 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
464 dev->ifname, buf, buf_sz);
467 static int system_get_mldversion(struct device *dev, char *buf, const size_t buf_sz)
469 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
470 dev->ifname, buf, buf_sz);
473 static int system_get_neigh4reachabletime(struct device *dev, char *buf, const size_t buf_sz)
475 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
476 dev->ifname, buf, buf_sz);
479 static int system_get_neigh6reachabletime(struct device *dev, char *buf, const size_t buf_sz)
481 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
482 dev->ifname, buf, buf_sz);
485 static int system_get_neigh4gcstaletime(struct device *dev, char *buf, const size_t buf_sz)
487 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time",
488 dev->ifname, buf, buf_sz);
491 static int system_get_neigh6gcstaletime(struct device *dev, char *buf, const size_t buf_sz)
493 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time",
494 dev->ifname, buf, buf_sz);
497 static int system_get_neigh4locktime(struct device *dev, char *buf, const size_t buf_sz)
499 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime",
500 dev->ifname, buf, buf_sz);
503 static int system_get_dadtransmits(struct device *dev, char *buf, const size_t buf_sz)
505 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
506 dev->ifname, buf, buf_sz);
509 static int system_get_sendredirects(struct device *dev, char *buf, const size_t buf_sz)
511 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects",
512 dev->ifname, buf, buf_sz);
515 // Evaluate netlink messages
516 static int cb_rtnl_event(struct nl_msg *msg, void *arg)
518 struct nlmsghdr *nh = nlmsg_hdr(msg);
519 struct nlattr *nla[__IFLA_MAX];
523 if (nh->nlmsg_type != RTM_NEWLINK)
526 nlmsg_parse(nh, sizeof(struct ifinfomsg), nla, __IFLA_MAX - 1, NULL);
527 if (!nla[IFLA_IFNAME])
530 struct device *dev = device_find(nla_data(nla[IFLA_IFNAME]));
534 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev->ifname, buf, sizeof(buf)))
535 link_state = strtoul(buf, NULL, 0);
537 device_set_link(dev, link_state ? true : false);
544 handle_hotplug_msg(char *data, int size)
546 const char *subsystem = NULL, *interface = NULL;
547 char *cur, *end, *sep;
552 if (!strncmp(data, "add@", 4))
554 else if (!strncmp(data, "remove@", 7))
559 skip = strlen(data) + 1;
562 for (cur = data + skip; cur < end; cur += skip) {
563 skip = strlen(cur) + 1;
565 sep = strchr(cur, '=');
570 if (!strcmp(cur, "INTERFACE"))
572 else if (!strcmp(cur, "SUBSYSTEM")) {
574 if (strcmp(subsystem, "net") != 0)
577 if (subsystem && interface)
583 dev = device_find(interface);
587 if (dev->type != &simple_device_type)
590 if (add && system_if_force_external(dev->ifname))
593 device_set_present(dev, add);
597 handle_hotplug_event(struct uloop_fd *u, unsigned int events)
599 struct event_socket *ev = container_of(u, struct event_socket, uloop);
600 struct sockaddr_nl nla;
601 unsigned char *buf = NULL;
604 while ((size = nl_recv(ev->sock, &nla, &buf, NULL)) > 0) {
606 handle_hotplug_msg((char *) buf, size);
612 static int system_rtnl_call(struct nl_msg *msg)
616 ret = nl_send_auto_complete(sock_rtnl, msg);
622 return nl_wait_for_ack(sock_rtnl);
625 int system_bridge_delbr(struct device *bridge)
627 return ioctl(sock_ioctl, SIOCBRDELBR, bridge->ifname);
630 static int system_bridge_if(const char *bridge, struct device *dev, int cmd, void *data)
634 memset(&ifr, 0, sizeof(ifr));
636 ifr.ifr_ifindex = dev->ifindex;
639 strncpy(ifr.ifr_name, bridge, sizeof(ifr.ifr_name));
640 return ioctl(sock_ioctl, cmd, &ifr);
643 static bool system_is_bridge(const char *name, char *buf, int buflen)
647 snprintf(buf, buflen, "/sys/devices/virtual/net/%s/bridge", name);
648 if (stat(buf, &st) < 0)
654 static char *system_get_bridge(const char *name, char *buf, int buflen)
660 snprintf(buf, buflen, "/sys/devices/virtual/net/*/brif/%s/bridge", name);
661 if (glob(buf, GLOB_NOSORT, NULL, &gl) < 0)
665 len = readlink(gl.gl_pathv[0], buf, buflen);
673 path = strrchr(buf, '/');
681 system_bridge_set_wireless(struct device *bridge, struct device *dev)
683 bool mcast_to_ucast = dev->wireless_ap;
686 if (bridge->settings.flags & DEV_OPT_MULTICAST_TO_UNICAST &&
687 !bridge->settings.multicast_to_unicast)
688 mcast_to_ucast = false;
690 if (!mcast_to_ucast || dev->wireless_isolate)
693 system_bridge_set_multicast_to_unicast(dev, mcast_to_ucast ? "1" : "0");
694 system_bridge_set_hairpin_mode(dev, hairpin ? "1" : "0");
697 int system_bridge_addif(struct device *bridge, struct device *dev)
703 oldbr = system_get_bridge(dev->ifname, dev_buf, sizeof(dev_buf));
704 if (!oldbr || strcmp(oldbr, bridge->ifname) != 0)
705 ret = system_bridge_if(bridge->ifname, dev, SIOCBRADDIF, NULL);
708 system_bridge_set_wireless(bridge, dev);
710 if (dev->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
711 snprintf(buf, sizeof(buf), "%i", dev->settings.multicast_router);
712 system_bridge_set_multicast_router(dev, buf, false);
715 if (dev->settings.flags & DEV_OPT_MULTICAST_FAST_LEAVE &&
716 dev->settings.multicast_fast_leave)
717 system_bridge_set_multicast_fast_leave(dev, "1");
719 if (dev->settings.flags & DEV_OPT_LEARNING &&
720 !dev->settings.learning)
721 system_bridge_set_learning(dev, "0");
723 if (dev->settings.flags & DEV_OPT_UNICAST_FLOOD &&
724 !dev->settings.unicast_flood)
725 system_bridge_set_unicast_flood(dev, "0");
730 int system_bridge_delif(struct device *bridge, struct device *dev)
732 return system_bridge_if(bridge->ifname, dev, SIOCBRDELIF, NULL);
735 int system_if_resolve(struct device *dev)
738 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
739 if (!ioctl(sock_ioctl, SIOCGIFINDEX, &ifr))
740 return ifr.ifr_ifindex;
745 static int system_if_flags(const char *ifname, unsigned add, unsigned rem)
749 memset(&ifr, 0, sizeof(ifr));
750 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
751 ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr);
752 ifr.ifr_flags |= add;
753 ifr.ifr_flags &= ~rem;
754 return ioctl(sock_ioctl, SIOCSIFFLAGS, &ifr);
766 static bool check_ifaddr(struct nlmsghdr *hdr, int ifindex)
768 struct ifaddrmsg *ifa = NLMSG_DATA(hdr);
770 return ifa->ifa_index == ifindex;
773 static bool check_route(struct nlmsghdr *hdr, int ifindex)
775 struct rtmsg *r = NLMSG_DATA(hdr);
776 struct nlattr *tb[__RTA_MAX];
778 if (r->rtm_protocol == RTPROT_KERNEL &&
779 r->rtm_family == AF_INET6)
782 nlmsg_parse(hdr, sizeof(struct rtmsg), tb, __RTA_MAX - 1, NULL);
786 return *(int *)RTA_DATA(tb[RTA_OIF]) == ifindex;
789 static bool check_rule(struct nlmsghdr *hdr, int ifindex)
794 static int cb_clear_event(struct nl_msg *msg, void *arg)
796 struct clear_data *clr = arg;
797 struct nlmsghdr *hdr = nlmsg_hdr(msg);
798 bool (*cb)(struct nlmsghdr *, int ifindex);
804 if (hdr->nlmsg_type != RTM_NEWADDR)
811 if (hdr->nlmsg_type != RTM_NEWROUTE)
818 if (hdr->nlmsg_type != RTM_NEWRULE)
827 if (!cb(hdr, clr->dev ? clr->dev->ifindex : 0))
830 if (type == RTM_DELRULE)
831 D(SYSTEM, "Remove a rule\n");
833 D(SYSTEM, "Remove %s from device %s\n",
834 type == RTM_DELADDR ? "an address" : "a route",
836 memcpy(nlmsg_hdr(clr->msg), hdr, hdr->nlmsg_len);
837 hdr = nlmsg_hdr(clr->msg);
838 hdr->nlmsg_type = type;
839 hdr->nlmsg_flags = NLM_F_REQUEST;
841 nl_socket_disable_auto_ack(sock_rtnl);
842 nl_send_auto_complete(sock_rtnl, clr->msg);
843 nl_socket_enable_auto_ack(sock_rtnl);
849 cb_finish_event(struct nl_msg *msg, void *arg)
857 error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
860 *pending = err->error;
865 system_if_clear_entries(struct device *dev, int type, int af)
867 struct clear_data clr;
868 struct nl_cb *cb = nl_cb_alloc(NL_CB_DEFAULT);
871 .rtm_flags = RTM_F_CLONED,
873 int flags = NLM_F_DUMP;
882 clr.size = sizeof(struct rtgenmsg);
885 clr.size = sizeof(struct rtmsg);
894 clr.msg = nlmsg_alloc_simple(type, flags);
898 nlmsg_append(clr.msg, &rtm, clr.size, 0);
899 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, cb_clear_event, &clr);
900 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, cb_finish_event, &pending);
901 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &pending);
903 nl_send_auto_complete(sock_rtnl, clr.msg);
905 nl_recvmsgs(sock_rtnl, cb);
913 * Clear bridge (membership) state and bring down device
915 void system_if_clear_state(struct device *dev)
917 static char buf[256];
920 device_set_ifindex(dev, system_if_resolve(dev));
921 if (dev->external || !dev->ifindex)
924 system_if_flags(dev->ifname, 0, IFF_UP);
926 if (system_is_bridge(dev->ifname, buf, sizeof(buf))) {
927 D(SYSTEM, "Delete existing bridge named '%s'\n", dev->ifname);
928 system_bridge_delbr(dev);
932 bridge = system_get_bridge(dev->ifname, buf, sizeof(buf));
934 D(SYSTEM, "Remove device '%s' from bridge '%s'\n", dev->ifname, bridge);
935 system_bridge_if(bridge, dev, SIOCBRDELIF, NULL);
938 system_if_clear_entries(dev, RTM_GETROUTE, AF_INET);
939 system_if_clear_entries(dev, RTM_GETADDR, AF_INET);
940 system_if_clear_entries(dev, RTM_GETROUTE, AF_INET6);
941 system_if_clear_entries(dev, RTM_GETADDR, AF_INET6);
942 system_set_disable_ipv6(dev, "0");
945 static inline unsigned long
946 sec_to_jiffies(int val)
948 return (unsigned long) val * 100;
951 static void system_bridge_conf_multicast_deps(struct device *bridge,
952 struct bridge_config *cfg,
958 if (cfg->flags & BRIDGE_OPT_ROBUSTNESS ||
959 cfg->flags & BRIDGE_OPT_QUERY_INTERVAL ||
960 cfg->flags & BRIDGE_OPT_QUERY_RESPONSE_INTERVAL) {
961 val = cfg->robustness * cfg->query_interval +
962 cfg->query_response_interval;
964 snprintf(buf, buf_len, "%i", val);
965 system_bridge_set_membership_interval(bridge, buf);
967 val = cfg->robustness * cfg->query_interval +
968 cfg->query_response_interval / 2;
970 snprintf(buf, buf_len, "%i", val);
971 system_bridge_set_other_querier_timeout(bridge, buf);
974 if (cfg->flags & BRIDGE_OPT_QUERY_INTERVAL) {
975 val = cfg->query_interval / 4;
977 snprintf(buf, buf_len, "%i", val);
978 system_bridge_set_startup_query_interval(bridge, buf);
982 static void system_bridge_conf_multicast(struct device *bridge,
983 struct bridge_config *cfg,
987 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
988 bridge->ifname, cfg->igmp_snoop ? "1" : "0");
990 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
991 bridge->ifname, cfg->multicast_querier ? "1" : "0");
993 snprintf(buf, buf_len, "%i", cfg->hash_max);
994 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
995 bridge->ifname, buf);
997 if (bridge->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
998 snprintf(buf, buf_len, "%i", bridge->settings.multicast_router);
999 system_bridge_set_multicast_router(bridge, buf, true);
1002 if (cfg->flags & BRIDGE_OPT_ROBUSTNESS) {
1003 snprintf(buf, buf_len, "%i", cfg->robustness);
1004 system_bridge_set_robustness(bridge, buf);
1007 if (cfg->flags & BRIDGE_OPT_QUERY_INTERVAL) {
1008 snprintf(buf, buf_len, "%i", cfg->query_interval);
1009 system_bridge_set_query_interval(bridge, buf);
1012 if (cfg->flags & BRIDGE_OPT_QUERY_RESPONSE_INTERVAL) {
1013 snprintf(buf, buf_len, "%i", cfg->query_response_interval);
1014 system_bridge_set_query_response_interval(bridge, buf);
1017 if (cfg->flags & BRIDGE_OPT_LAST_MEMBER_INTERVAL) {
1018 snprintf(buf, buf_len, "%i", cfg->last_member_interval);
1019 system_bridge_set_last_member_interval(bridge, buf);
1022 system_bridge_conf_multicast_deps(bridge, cfg, buf, buf_len);
1025 int system_bridge_addbr(struct device *bridge, struct bridge_config *cfg)
1028 unsigned long args[4] = {};
1030 if (ioctl(sock_ioctl, SIOCBRADDBR, bridge->ifname) < 0)
1033 args[0] = BRCTL_SET_BRIDGE_STP_STATE;
1034 args[1] = !!cfg->stp;
1035 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1037 args[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY;
1038 args[1] = sec_to_jiffies(cfg->forward_delay);
1039 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1041 system_bridge_conf_multicast(bridge, cfg, buf, sizeof(buf));
1043 args[0] = BRCTL_SET_BRIDGE_PRIORITY;
1044 args[1] = cfg->priority;
1045 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1047 if (cfg->flags & BRIDGE_OPT_AGEING_TIME) {
1048 args[0] = BRCTL_SET_AGEING_TIME;
1049 args[1] = sec_to_jiffies(cfg->ageing_time);
1050 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1053 if (cfg->flags & BRIDGE_OPT_HELLO_TIME) {
1054 args[0] = BRCTL_SET_BRIDGE_HELLO_TIME;
1055 args[1] = sec_to_jiffies(cfg->hello_time);
1056 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1059 if (cfg->flags & BRIDGE_OPT_MAX_AGE) {
1060 args[0] = BRCTL_SET_BRIDGE_MAX_AGE;
1061 args[1] = sec_to_jiffies(cfg->max_age);
1062 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1068 int system_macvlan_add(struct device *macvlan, struct device *dev, struct macvlan_config *cfg)
1071 struct nlattr *linkinfo, *data;
1072 struct ifinfomsg iim = { .ifi_family = AF_UNSPEC, };
1074 static const struct {
1076 enum macvlan_mode val;
1078 { "private", MACVLAN_MODE_PRIVATE },
1079 { "vepa", MACVLAN_MODE_VEPA },
1080 { "bridge", MACVLAN_MODE_BRIDGE },
1081 { "passthru", MACVLAN_MODE_PASSTHRU },
1084 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
1089 nlmsg_append(msg, &iim, sizeof(iim), 0);
1091 if (cfg->flags & MACVLAN_OPT_MACADDR)
1092 nla_put(msg, IFLA_ADDRESS, sizeof(cfg->macaddr), cfg->macaddr);
1093 nla_put_string(msg, IFLA_IFNAME, macvlan->ifname);
1094 nla_put_u32(msg, IFLA_LINK, dev->ifindex);
1096 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
1097 goto nla_put_failure;
1099 nla_put_string(msg, IFLA_INFO_KIND, "macvlan");
1101 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
1102 goto nla_put_failure;
1105 for (i = 0; i < ARRAY_SIZE(modes); i++) {
1106 if (strcmp(cfg->mode, modes[i].name) != 0)
1109 nla_put_u32(msg, IFLA_MACVLAN_MODE, modes[i].val);
1114 nla_nest_end(msg, data);
1115 nla_nest_end(msg, linkinfo);
1117 rv = system_rtnl_call(msg);
1119 D(SYSTEM, "Error adding macvlan '%s' over '%s': %d\n", macvlan->ifname, dev->ifname, rv);
1128 static int system_link_del(const char *ifname)
1131 struct ifinfomsg iim = {
1132 .ifi_family = AF_UNSPEC,
1136 msg = nlmsg_alloc_simple(RTM_DELLINK, NLM_F_REQUEST);
1141 nlmsg_append(msg, &iim, sizeof(iim), 0);
1142 nla_put_string(msg, IFLA_IFNAME, ifname);
1143 return system_rtnl_call(msg);
1146 int system_macvlan_del(struct device *macvlan)
1148 return system_link_del(macvlan->ifname);
1151 int system_veth_add(struct device *veth, struct veth_config *cfg)
1154 struct ifinfomsg empty_iim = {};
1155 struct nlattr *linkinfo, *data, *veth_info;
1158 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
1163 nlmsg_append(msg, &empty_iim, sizeof(empty_iim), 0);
1165 if (cfg->flags & VETH_OPT_MACADDR)
1166 nla_put(msg, IFLA_ADDRESS, sizeof(cfg->macaddr), cfg->macaddr);
1167 nla_put_string(msg, IFLA_IFNAME, veth->ifname);
1169 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
1170 goto nla_put_failure;
1172 nla_put_string(msg, IFLA_INFO_KIND, "veth");
1174 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
1175 goto nla_put_failure;
1177 if (!(veth_info = nla_nest_start(msg, VETH_INFO_PEER)))
1178 goto nla_put_failure;
1180 nlmsg_append(msg, &empty_iim, sizeof(empty_iim), 0);
1182 if (cfg->flags & VETH_OPT_PEER_NAME)
1183 nla_put_string(msg, IFLA_IFNAME, cfg->peer_name);
1184 if (cfg->flags & VETH_OPT_PEER_MACADDR)
1185 nla_put(msg, IFLA_ADDRESS, sizeof(cfg->peer_macaddr), cfg->peer_macaddr);
1187 nla_nest_end(msg, veth_info);
1188 nla_nest_end(msg, data);
1189 nla_nest_end(msg, linkinfo);
1191 rv = system_rtnl_call(msg);
1193 if (cfg->flags & VETH_OPT_PEER_NAME)
1194 D(SYSTEM, "Error adding veth '%s' with peer '%s': %d\n", veth->ifname, cfg->peer_name, rv);
1196 D(SYSTEM, "Error adding veth '%s': %d\n", veth->ifname, rv);
1206 int system_veth_del(struct device *veth)
1208 return system_link_del(veth->ifname);
1211 static int system_vlan(struct device *dev, int id)
1213 struct vlan_ioctl_args ifr = {
1214 .cmd = SET_VLAN_NAME_TYPE_CMD,
1215 .u.name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD,
1218 ioctl(sock_ioctl, SIOCSIFVLAN, &ifr);
1221 ifr.cmd = DEL_VLAN_CMD;
1224 ifr.cmd = ADD_VLAN_CMD;
1227 strncpy(ifr.device1, dev->ifname, sizeof(ifr.device1));
1228 return ioctl(sock_ioctl, SIOCSIFVLAN, &ifr);
1231 int system_vlan_add(struct device *dev, int id)
1233 return system_vlan(dev, id);
1236 int system_vlan_del(struct device *dev)
1238 return system_vlan(dev, -1);
1241 int system_vlandev_add(struct device *vlandev, struct device *dev, struct vlandev_config *cfg)
1244 struct nlattr *linkinfo, *data;
1245 struct ifinfomsg iim = { .ifi_family = AF_UNSPEC };
1248 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
1253 nlmsg_append(msg, &iim, sizeof(iim), 0);
1254 nla_put_string(msg, IFLA_IFNAME, vlandev->ifname);
1255 nla_put_u32(msg, IFLA_LINK, dev->ifindex);
1257 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
1258 goto nla_put_failure;
1260 nla_put_string(msg, IFLA_INFO_KIND, "vlan");
1262 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
1263 goto nla_put_failure;
1265 nla_put_u16(msg, IFLA_VLAN_ID, cfg->vid);
1267 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1268 nla_put_u16(msg, IFLA_VLAN_PROTOCOL, htons(cfg->proto));
1270 if(cfg->proto == VLAN_PROTO_8021AD)
1271 netifd_log_message(L_WARNING, "%s Your kernel is older than linux 3.10.0, 802.1ad is not supported defaulting to 802.1q", vlandev->type->name);
1274 nla_nest_end(msg, data);
1275 nla_nest_end(msg, linkinfo);
1277 rv = system_rtnl_call(msg);
1279 D(SYSTEM, "Error adding vlandev '%s' over '%s': %d\n", vlandev->ifname, dev->ifname, rv);
1288 int system_vlandev_del(struct device *vlandev)
1290 return system_link_del(vlandev->ifname);
1294 system_if_get_settings(struct device *dev, struct device_settings *s)
1299 memset(&ifr, 0, sizeof(ifr));
1300 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
1302 if (ioctl(sock_ioctl, SIOCGIFMTU, &ifr) == 0) {
1303 s->mtu = ifr.ifr_mtu;
1304 s->flags |= DEV_OPT_MTU;
1307 s->mtu6 = system_update_ipv6_mtu(dev, 0);
1309 s->flags |= DEV_OPT_MTU6;
1311 if (ioctl(sock_ioctl, SIOCGIFTXQLEN, &ifr) == 0) {
1312 s->txqueuelen = ifr.ifr_qlen;
1313 s->flags |= DEV_OPT_TXQUEUELEN;
1316 if (ioctl(sock_ioctl, SIOCGIFHWADDR, &ifr) == 0) {
1317 memcpy(s->macaddr, &ifr.ifr_hwaddr.sa_data, sizeof(s->macaddr));
1318 s->flags |= DEV_OPT_MACADDR;
1321 if (!system_get_disable_ipv6(dev, buf, sizeof(buf))) {
1322 s->ipv6 = !strtoul(buf, NULL, 0);
1323 s->flags |= DEV_OPT_IPV6;
1326 if (ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr) == 0) {
1327 s->promisc = ifr.ifr_flags & IFF_PROMISC;
1328 s->flags |= DEV_OPT_PROMISC;
1330 s->multicast = ifr.ifr_flags & IFF_MULTICAST;
1331 s->flags |= DEV_OPT_MULTICAST;
1334 if (!system_get_rpfilter(dev, buf, sizeof(buf))) {
1335 s->rpfilter = strtoul(buf, NULL, 0);
1336 s->flags |= DEV_OPT_RPFILTER;
1339 if (!system_get_acceptlocal(dev, buf, sizeof(buf))) {
1340 s->acceptlocal = strtoul(buf, NULL, 0);
1341 s->flags |= DEV_OPT_ACCEPTLOCAL;
1344 if (!system_get_igmpversion(dev, buf, sizeof(buf))) {
1345 s->igmpversion = strtoul(buf, NULL, 0);
1346 s->flags |= DEV_OPT_IGMPVERSION;
1349 if (!system_get_mldversion(dev, buf, sizeof(buf))) {
1350 s->mldversion = strtoul(buf, NULL, 0);
1351 s->flags |= DEV_OPT_MLDVERSION;
1354 if (!system_get_neigh4reachabletime(dev, buf, sizeof(buf))) {
1355 s->neigh4reachabletime = strtoul(buf, NULL, 0);
1356 s->flags |= DEV_OPT_NEIGHREACHABLETIME;
1359 if (!system_get_neigh6reachabletime(dev, buf, sizeof(buf))) {
1360 s->neigh6reachabletime = strtoul(buf, NULL, 0);
1361 s->flags |= DEV_OPT_NEIGHREACHABLETIME;
1364 if (!system_get_neigh4locktime(dev, buf, sizeof(buf))) {
1365 s->neigh4locktime = strtoul(buf, NULL, 0);
1366 s->flags |= DEV_OPT_NEIGHLOCKTIME;
1369 if (!system_get_neigh4gcstaletime(dev, buf, sizeof(buf))) {
1370 s->neigh4gcstaletime = strtoul(buf, NULL, 0);
1371 s->flags |= DEV_OPT_NEIGHGCSTALETIME;
1374 if (!system_get_neigh6gcstaletime(dev, buf, sizeof(buf))) {
1375 s->neigh6gcstaletime = strtoul(buf, NULL, 0);
1376 s->flags |= DEV_OPT_NEIGHGCSTALETIME;
1379 if (!system_get_dadtransmits(dev, buf, sizeof(buf))) {
1380 s->dadtransmits = strtoul(buf, NULL, 0);
1381 s->flags |= DEV_OPT_DADTRANSMITS;
1384 if (!system_get_sendredirects(dev, buf, sizeof(buf))) {
1385 s->sendredirects = strtoul(buf, NULL, 0);
1386 s->flags |= DEV_OPT_SENDREDIRECTS;
1391 system_if_set_rps_xps_val(const char *path, int val)
1397 if (glob(path, 0, NULL, &gl))
1400 snprintf(val_buf, sizeof(val_buf), "%x", val);
1401 for (i = 0; i < gl.gl_pathc; i++)
1402 system_set_sysctl(gl.gl_pathv[i], val_buf);
1408 system_if_apply_rps_xps(struct device *dev, struct device_settings *s)
1410 long n_cpus = sysconf(_SC_NPROCESSORS_ONLN);
1416 val = (1 << n_cpus) - 1;
1417 snprintf(dev_buf, sizeof(dev_buf), "/sys/class/net/%s/queues/*/rps_cpus", dev->ifname);
1418 system_if_set_rps_xps_val(dev_buf, s->rps ? val : 0);
1420 snprintf(dev_buf, sizeof(dev_buf), "/sys/class/net/%s/queues/*/xps_cpus", dev->ifname);
1421 system_if_set_rps_xps_val(dev_buf, s->xps ? val : 0);
1425 system_if_apply_settings(struct device *dev, struct device_settings *s, unsigned int apply_mask)
1430 memset(&ifr, 0, sizeof(ifr));
1431 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
1432 if (s->flags & DEV_OPT_MTU & apply_mask) {
1433 ifr.ifr_mtu = s->mtu;
1434 if (ioctl(sock_ioctl, SIOCSIFMTU, &ifr) < 0)
1435 s->flags &= ~DEV_OPT_MTU;
1437 if (s->flags & DEV_OPT_MTU6 & apply_mask) {
1438 system_update_ipv6_mtu(dev, s->mtu6);
1440 if (s->flags & DEV_OPT_TXQUEUELEN & apply_mask) {
1441 ifr.ifr_qlen = s->txqueuelen;
1442 if (ioctl(sock_ioctl, SIOCSIFTXQLEN, &ifr) < 0)
1443 s->flags &= ~DEV_OPT_TXQUEUELEN;
1445 if ((s->flags & DEV_OPT_MACADDR & apply_mask) && !dev->external) {
1446 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
1447 memcpy(&ifr.ifr_hwaddr.sa_data, s->macaddr, sizeof(s->macaddr));
1448 if (ioctl(sock_ioctl, SIOCSIFHWADDR, &ifr) < 0)
1449 s->flags &= ~DEV_OPT_MACADDR;
1451 if (s->flags & DEV_OPT_IPV6 & apply_mask)
1452 system_set_disable_ipv6(dev, s->ipv6 ? "0" : "1");
1453 if (s->flags & DEV_OPT_PROMISC & apply_mask) {
1454 if (system_if_flags(dev->ifname, s->promisc ? IFF_PROMISC : 0,
1455 !s->promisc ? IFF_PROMISC : 0) < 0)
1456 s->flags &= ~DEV_OPT_PROMISC;
1458 if (s->flags & DEV_OPT_RPFILTER & apply_mask) {
1459 snprintf(buf, sizeof(buf), "%d", s->rpfilter);
1460 system_set_rpfilter(dev, buf);
1462 if (s->flags & DEV_OPT_ACCEPTLOCAL & apply_mask)
1463 system_set_acceptlocal(dev, s->acceptlocal ? "1" : "0");
1464 if (s->flags & DEV_OPT_IGMPVERSION & apply_mask) {
1465 snprintf(buf, sizeof(buf), "%d", s->igmpversion);
1466 system_set_igmpversion(dev, buf);
1468 if (s->flags & DEV_OPT_MLDVERSION & apply_mask) {
1469 snprintf(buf, sizeof(buf), "%d", s->mldversion);
1470 system_set_mldversion(dev, buf);
1472 if (s->flags & DEV_OPT_NEIGHREACHABLETIME & apply_mask) {
1473 snprintf(buf, sizeof(buf), "%d", s->neigh4reachabletime);
1474 system_set_neigh4reachabletime(dev, buf);
1475 snprintf(buf, sizeof(buf), "%d", s->neigh6reachabletime);
1476 system_set_neigh6reachabletime(dev, buf);
1478 if (s->flags & DEV_OPT_NEIGHLOCKTIME & apply_mask) {
1479 snprintf(buf, sizeof(buf), "%d", s->neigh4locktime);
1480 system_set_neigh4locktime(dev, buf);
1482 if (s->flags & DEV_OPT_NEIGHGCSTALETIME & apply_mask) {
1483 snprintf(buf, sizeof(buf), "%d", s->neigh4gcstaletime);
1484 system_set_neigh4gcstaletime(dev, buf);
1485 snprintf(buf, sizeof(buf), "%d", s->neigh6gcstaletime);
1486 system_set_neigh6gcstaletime(dev, buf);
1488 if (s->flags & DEV_OPT_DADTRANSMITS & apply_mask) {
1489 snprintf(buf, sizeof(buf), "%d", s->dadtransmits);
1490 system_set_dadtransmits(dev, buf);
1492 if (s->flags & DEV_OPT_MULTICAST & apply_mask) {
1493 if (system_if_flags(dev->ifname, s->multicast ? IFF_MULTICAST : 0,
1494 !s->multicast ? IFF_MULTICAST : 0) < 0)
1495 s->flags &= ~DEV_OPT_MULTICAST;
1497 if (s->flags & DEV_OPT_SENDREDIRECTS & apply_mask)
1498 system_set_sendredirects(dev, s->sendredirects ? "1" : "0");
1500 system_if_apply_rps_xps(dev, s);
1503 int system_if_up(struct device *dev)
1505 system_if_get_settings(dev, &dev->orig_settings);
1506 /* Only keep orig settings based on what needs to be set */
1507 dev->orig_settings.valid_flags = dev->orig_settings.flags;
1508 dev->orig_settings.flags &= dev->settings.flags;
1509 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
1510 return system_if_flags(dev->ifname, IFF_UP, 0);
1513 int system_if_down(struct device *dev)
1515 int ret = system_if_flags(dev->ifname, 0, IFF_UP);
1516 system_if_apply_settings(dev, &dev->orig_settings, dev->orig_settings.flags);
1520 struct if_check_data {
1526 #ifndef IFF_LOWER_UP
1527 #define IFF_LOWER_UP 0x10000
1530 static int cb_if_check_valid(struct nl_msg *msg, void *arg)
1532 struct nlmsghdr *nh = nlmsg_hdr(msg);
1533 struct ifinfomsg *ifi = NLMSG_DATA(nh);
1534 struct if_check_data *chk = (struct if_check_data *)arg;
1536 if (nh->nlmsg_type != RTM_NEWLINK)
1539 device_set_present(chk->dev, ifi->ifi_index > 0 ? true : false);
1540 device_set_link(chk->dev, ifi->ifi_flags & IFF_LOWER_UP ? true : false);
1545 static int cb_if_check_ack(struct nl_msg *msg, void *arg)
1547 struct if_check_data *chk = (struct if_check_data *)arg;
1552 static int cb_if_check_error(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
1554 struct if_check_data *chk = (struct if_check_data *)arg;
1556 device_set_present(chk->dev, false);
1557 device_set_link(chk->dev, false);
1558 chk->pending = err->error;
1563 int system_if_check(struct device *dev)
1565 struct nl_cb *cb = nl_cb_alloc(NL_CB_DEFAULT);
1567 struct ifinfomsg ifi = {
1568 .ifi_family = AF_UNSPEC,
1571 struct if_check_data chk = {
1577 msg = nlmsg_alloc_simple(RTM_GETLINK, 0);
1581 if (nlmsg_append(msg, &ifi, sizeof(ifi), 0) ||
1582 nla_put_string(msg, IFLA_IFNAME, dev->ifname))
1585 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, cb_if_check_valid, &chk);
1586 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, cb_if_check_ack, &chk);
1587 nl_cb_err(cb, NL_CB_CUSTOM, cb_if_check_error, &chk);
1589 nl_send_auto_complete(sock_rtnl, msg);
1590 while (chk.pending > 0)
1591 nl_recvmsgs(sock_rtnl, cb);
1603 system_if_get_parent(struct device *dev)
1605 char buf[64], *devname;
1606 int ifindex, iflink, len;
1609 snprintf(buf, sizeof(buf), "/sys/class/net/%s/iflink", dev->ifname);
1610 f = fopen(buf, "r");
1614 len = fread(buf, 1, sizeof(buf) - 1, f);
1621 iflink = strtoul(buf, NULL, 0);
1622 ifindex = system_if_resolve(dev);
1623 if (!iflink || iflink == ifindex)
1626 devname = if_indextoname(iflink, buf);
1630 return device_get(devname, true);
1634 read_string_file(int dir_fd, const char *file, char *buf, int len)
1640 fd = openat(dir_fd, file, O_RDONLY);
1645 len = read(fd, buf, len - 1);
1649 } else if (len > 0) {
1652 c = strchr(buf, '\n');
1665 read_uint64_file(int dir_fd, const char *file, uint64_t *val)
1670 ret = read_string_file(dir_fd, file, buf, sizeof(buf));
1672 *val = strtoull(buf, NULL, 0);
1677 /* Assume advertised flags == supported flags */
1678 static const struct {
1681 } ethtool_link_modes[] = {
1682 { ADVERTISED_10baseT_Half, "10H" },
1683 { ADVERTISED_10baseT_Full, "10F" },
1684 { ADVERTISED_100baseT_Half, "100H" },
1685 { ADVERTISED_100baseT_Full, "100F" },
1686 { ADVERTISED_1000baseT_Half, "1000H" },
1687 { ADVERTISED_1000baseT_Full, "1000F" },
1690 static void system_add_link_modes(struct blob_buf *b, __u32 mask)
1693 for (i = 0; i < ARRAY_SIZE(ethtool_link_modes); i++) {
1694 if (mask & ethtool_link_modes[i].mask)
1695 blobmsg_add_string(b, NULL, ethtool_link_modes[i].name);
1700 system_if_force_external(const char *ifname)
1705 snprintf(buf, sizeof(buf), "/sys/class/net/%s/phy80211", ifname);
1706 return stat(buf, &s) == 0;
1710 system_if_dump_info(struct device *dev, struct blob_buf *b)
1712 struct ethtool_cmd ecmd;
1718 snprintf(buf, sizeof(buf), "/sys/class/net/%s", dev->ifname);
1719 dir_fd = open(buf, O_DIRECTORY);
1721 memset(&ecmd, 0, sizeof(ecmd));
1722 memset(&ifr, 0, sizeof(ifr));
1723 strcpy(ifr.ifr_name, dev->ifname);
1724 ifr.ifr_data = (caddr_t) &ecmd;
1725 ecmd.cmd = ETHTOOL_GSET;
1727 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) == 0) {
1728 c = blobmsg_open_array(b, "link-advertising");
1729 system_add_link_modes(b, ecmd.advertising);
1730 blobmsg_close_array(b, c);
1732 c = blobmsg_open_array(b, "link-supported");
1733 system_add_link_modes(b, ecmd.supported);
1734 blobmsg_close_array(b, c);
1736 s = blobmsg_alloc_string_buffer(b, "speed", 8);
1737 snprintf(s, 8, "%d%c", ethtool_cmd_speed(&ecmd),
1738 ecmd.duplex == DUPLEX_HALF ? 'H' : 'F');
1739 blobmsg_add_string_buffer(b);
1747 system_if_dump_stats(struct device *dev, struct blob_buf *b)
1749 const char *const counters[] = {
1750 "collisions", "rx_frame_errors", "tx_compressed",
1751 "multicast", "rx_length_errors", "tx_dropped",
1752 "rx_bytes", "rx_missed_errors", "tx_errors",
1753 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1754 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1755 "rx_dropped", "tx_aborted_errors", "tx_packets",
1756 "rx_errors", "tx_bytes", "tx_window_errors",
1757 "rx_fifo_errors", "tx_carrier_errors",
1764 snprintf(buf, sizeof(buf), "/sys/class/net/%s/statistics", dev->ifname);
1765 stats_dir = open(buf, O_DIRECTORY);
1769 for (i = 0; i < ARRAY_SIZE(counters); i++)
1770 if (read_uint64_file(stats_dir, counters[i], &val))
1771 blobmsg_add_u64(b, counters[i], val);
1777 static int system_addr(struct device *dev, struct device_addr *addr, int cmd)
1779 bool v4 = ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET4);
1780 int alen = v4 ? 4 : 16;
1781 unsigned int flags = 0;
1782 struct ifaddrmsg ifa = {
1783 .ifa_family = (alen == 4) ? AF_INET : AF_INET6,
1784 .ifa_prefixlen = addr->mask,
1785 .ifa_index = dev->ifindex,
1789 if (cmd == RTM_NEWADDR)
1790 flags |= NLM_F_CREATE | NLM_F_REPLACE;
1792 msg = nlmsg_alloc_simple(cmd, flags);
1796 nlmsg_append(msg, &ifa, sizeof(ifa), 0);
1797 nla_put(msg, IFA_LOCAL, alen, &addr->addr);
1799 if (addr->broadcast)
1800 nla_put_u32(msg, IFA_BROADCAST, addr->broadcast);
1801 if (addr->point_to_point)
1802 nla_put_u32(msg, IFA_ADDRESS, addr->point_to_point);
1804 time_t now = system_get_rtime();
1805 struct ifa_cacheinfo cinfo = {0xffffffffU, 0xffffffffU, 0, 0};
1807 if (addr->preferred_until) {
1808 int64_t preferred = addr->preferred_until - now;
1811 else if (preferred > UINT32_MAX)
1812 preferred = UINT32_MAX;
1814 cinfo.ifa_prefered = preferred;
1817 if (addr->valid_until) {
1818 int64_t valid = addr->valid_until - now;
1823 else if (valid > UINT32_MAX)
1826 cinfo.ifa_valid = valid;
1829 nla_put(msg, IFA_CACHEINFO, sizeof(cinfo), &cinfo);
1831 if (cmd == RTM_NEWADDR && (addr->flags & DEVADDR_OFFLINK))
1832 nla_put_u32(msg, IFA_FLAGS, IFA_F_NOPREFIXROUTE);
1835 return system_rtnl_call(msg);
1838 int system_add_address(struct device *dev, struct device_addr *addr)
1840 return system_addr(dev, addr, RTM_NEWADDR);
1843 int system_del_address(struct device *dev, struct device_addr *addr)
1845 return system_addr(dev, addr, RTM_DELADDR);
1848 static int system_rt(struct device *dev, struct device_route *route, int cmd)
1850 int alen = ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET4) ? 4 : 16;
1852 unsigned int flags = 0;
1855 have_gw = !!route->nexthop.in.s_addr;
1857 have_gw = route->nexthop.in6.s6_addr32[0] ||
1858 route->nexthop.in6.s6_addr32[1] ||
1859 route->nexthop.in6.s6_addr32[2] ||
1860 route->nexthop.in6.s6_addr32[3];
1862 unsigned int table = (route->flags & (DEVROUTE_TABLE | DEVROUTE_SRCTABLE))
1863 ? route->table : RT_TABLE_MAIN;
1865 struct rtmsg rtm = {
1866 .rtm_family = (alen == 4) ? AF_INET : AF_INET6,
1867 .rtm_dst_len = route->mask,
1868 .rtm_src_len = route->sourcemask,
1869 .rtm_table = (table < 256) ? table : RT_TABLE_UNSPEC,
1870 .rtm_protocol = (route->flags & DEVROUTE_PROTO) ? route->proto : RTPROT_STATIC,
1871 .rtm_scope = RT_SCOPE_NOWHERE,
1872 .rtm_type = (cmd == RTM_DELROUTE) ? 0: RTN_UNICAST,
1873 .rtm_flags = (route->flags & DEVROUTE_ONLINK) ? RTNH_F_ONLINK : 0,
1877 if (cmd == RTM_NEWROUTE) {
1878 flags |= NLM_F_CREATE | NLM_F_REPLACE;
1880 if (!dev) { // Add null-route
1881 rtm.rtm_scope = RT_SCOPE_UNIVERSE;
1882 rtm.rtm_type = RTN_UNREACHABLE;
1885 rtm.rtm_scope = (have_gw) ? RT_SCOPE_UNIVERSE : RT_SCOPE_LINK;
1888 if (route->flags & DEVROUTE_TYPE) {
1889 rtm.rtm_type = route->type;
1890 if (!(route->flags & (DEVROUTE_TABLE | DEVROUTE_SRCTABLE))) {
1891 if (rtm.rtm_type == RTN_LOCAL || rtm.rtm_type == RTN_BROADCAST ||
1892 rtm.rtm_type == RTN_NAT || rtm.rtm_type == RTN_ANYCAST)
1893 rtm.rtm_table = RT_TABLE_LOCAL;
1896 if (rtm.rtm_type == RTN_LOCAL || rtm.rtm_type == RTN_NAT) {
1897 rtm.rtm_scope = RT_SCOPE_HOST;
1898 } else if (rtm.rtm_type == RTN_BROADCAST || rtm.rtm_type == RTN_MULTICAST ||
1899 rtm.rtm_type == RTN_ANYCAST) {
1900 rtm.rtm_scope = RT_SCOPE_LINK;
1901 } else if (rtm.rtm_type == RTN_BLACKHOLE || rtm.rtm_type == RTN_UNREACHABLE ||
1902 rtm.rtm_type == RTN_PROHIBIT || rtm.rtm_type == RTN_FAILED_POLICY ||
1903 rtm.rtm_type == RTN_THROW) {
1904 rtm.rtm_scope = RT_SCOPE_UNIVERSE;
1909 msg = nlmsg_alloc_simple(cmd, flags);
1913 nlmsg_append(msg, &rtm, sizeof(rtm), 0);
1916 nla_put(msg, RTA_DST, alen, &route->addr);
1918 if (route->sourcemask) {
1919 if (rtm.rtm_family == AF_INET)
1920 nla_put(msg, RTA_PREFSRC, alen, &route->source);
1922 nla_put(msg, RTA_SRC, alen, &route->source);
1925 if (route->metric > 0)
1926 nla_put_u32(msg, RTA_PRIORITY, route->metric);
1929 nla_put(msg, RTA_GATEWAY, alen, &route->nexthop);
1932 nla_put_u32(msg, RTA_OIF, dev->ifindex);
1935 nla_put_u32(msg, RTA_TABLE, table);
1937 if (route->flags & DEVROUTE_MTU) {
1938 struct nlattr *metrics;
1940 if (!(metrics = nla_nest_start(msg, RTA_METRICS)))
1941 goto nla_put_failure;
1943 nla_put_u32(msg, RTAX_MTU, route->mtu);
1945 nla_nest_end(msg, metrics);
1948 return system_rtnl_call(msg);
1955 int system_add_route(struct device *dev, struct device_route *route)
1957 return system_rt(dev, route, RTM_NEWROUTE);
1960 int system_del_route(struct device *dev, struct device_route *route)
1962 return system_rt(dev, route, RTM_DELROUTE);
1965 int system_flush_routes(void)
1967 const char *names[] = {
1968 "/proc/sys/net/ipv4/route/flush",
1969 "/proc/sys/net/ipv6/route/flush"
1973 for (i = 0; i < ARRAY_SIZE(names); i++) {
1974 fd = open(names[i], O_WRONLY);
1978 if (write(fd, "-1", 2)) {}
1984 bool system_resolve_rt_type(const char *type, unsigned int *id)
1986 return system_rtn_aton(type, id);
1989 bool system_resolve_rt_proto(const char *type, unsigned int *id)
1993 unsigned int n, proto = 256;
1994 n = strtoul(type, &e, 0);
1995 if (!*e && e != type)
1997 else if (!strcmp(type, "unspec"))
1998 proto = RTPROT_UNSPEC;
1999 else if (!strcmp(type, "kernel"))
2000 proto = RTPROT_KERNEL;
2001 else if (!strcmp(type, "boot"))
2002 proto = RTPROT_BOOT;
2003 else if (!strcmp(type, "static"))
2004 proto = RTPROT_STATIC;
2005 else if ((f = fopen("/etc/iproute2/rt_protos", "r")) != NULL) {
2006 while (fgets(buf, sizeof(buf) - 1, f) != NULL) {
2007 if ((e = strtok(buf, " \t\n")) == NULL || *e == '#')
2010 n = strtoul(e, NULL, 10);
2011 e = strtok(NULL, " \t\n");
2013 if (e && !strcmp(e, type)) {
2028 bool system_resolve_rt_table(const char *name, unsigned int *id)
2032 unsigned int n, table = RT_TABLE_UNSPEC;
2034 /* first try to parse table as number */
2035 if ((n = strtoul(name, &e, 0)) > 0 && !*e)
2038 /* handle well known aliases */
2039 else if (!strcmp(name, "default"))
2040 table = RT_TABLE_DEFAULT;
2041 else if (!strcmp(name, "main"))
2042 table = RT_TABLE_MAIN;
2043 else if (!strcmp(name, "local"))
2044 table = RT_TABLE_LOCAL;
2046 /* try to look up name in /etc/iproute2/rt_tables */
2047 else if ((f = fopen("/etc/iproute2/rt_tables", "r")) != NULL)
2049 while (fgets(buf, sizeof(buf) - 1, f) != NULL)
2051 if ((e = strtok(buf, " \t\n")) == NULL || *e == '#')
2054 n = strtoul(e, NULL, 10);
2055 e = strtok(NULL, " \t\n");
2057 if (e && !strcmp(e, name))
2067 if (table == RT_TABLE_UNSPEC)
2074 bool system_is_default_rt_table(unsigned int id)
2076 return (id == RT_TABLE_MAIN);
2079 bool system_resolve_rpfilter(const char *filter, unsigned int *id)
2084 if (!strcmp(filter, "strict"))
2086 else if (!strcmp(filter, "loose"))
2089 n = strtoul(filter, &e, 0);
2090 if (*e || e == filter || n > 2)
2098 static int system_iprule(struct iprule *rule, int cmd)
2100 int alen = ((rule->flags & IPRULE_FAMILY) == IPRULE_INET4) ? 4 : 16;
2103 struct rtmsg rtm = {
2104 .rtm_family = (alen == 4) ? AF_INET : AF_INET6,
2105 .rtm_protocol = RTPROT_STATIC,
2106 .rtm_scope = RT_SCOPE_UNIVERSE,
2107 .rtm_table = RT_TABLE_UNSPEC,
2108 .rtm_type = RTN_UNSPEC,
2112 if (cmd == RTM_NEWRULE)
2113 rtm.rtm_type = RTN_UNICAST;
2116 rtm.rtm_flags |= FIB_RULE_INVERT;
2118 if (rule->flags & IPRULE_SRC)
2119 rtm.rtm_src_len = rule->src_mask;
2121 if (rule->flags & IPRULE_DEST)
2122 rtm.rtm_dst_len = rule->dest_mask;
2124 if (rule->flags & IPRULE_TOS)
2125 rtm.rtm_tos = rule->tos;
2127 if (rule->flags & IPRULE_LOOKUP) {
2128 if (rule->lookup < 256)
2129 rtm.rtm_table = rule->lookup;
2132 if (rule->flags & IPRULE_ACTION)
2133 rtm.rtm_type = rule->action;
2134 else if (rule->flags & IPRULE_GOTO)
2135 rtm.rtm_type = FR_ACT_GOTO;
2136 else if (!(rule->flags & (IPRULE_LOOKUP | IPRULE_ACTION | IPRULE_GOTO)))
2137 rtm.rtm_type = FR_ACT_NOP;
2139 msg = nlmsg_alloc_simple(cmd, NLM_F_REQUEST);
2144 nlmsg_append(msg, &rtm, sizeof(rtm), 0);
2146 if (rule->flags & IPRULE_IN)
2147 nla_put(msg, FRA_IFNAME, strlen(rule->in_dev) + 1, rule->in_dev);
2149 if (rule->flags & IPRULE_OUT)
2150 nla_put(msg, FRA_OIFNAME, strlen(rule->out_dev) + 1, rule->out_dev);
2152 if (rule->flags & IPRULE_SRC)
2153 nla_put(msg, FRA_SRC, alen, &rule->src_addr);
2155 if (rule->flags & IPRULE_DEST)
2156 nla_put(msg, FRA_DST, alen, &rule->dest_addr);
2158 if (rule->flags & IPRULE_PRIORITY)
2159 nla_put_u32(msg, FRA_PRIORITY, rule->priority);
2160 else if (cmd == RTM_NEWRULE)
2161 nla_put_u32(msg, FRA_PRIORITY, rule->order);
2163 if (rule->flags & IPRULE_FWMARK)
2164 nla_put_u32(msg, FRA_FWMARK, rule->fwmark);
2166 if (rule->flags & IPRULE_FWMASK)
2167 nla_put_u32(msg, FRA_FWMASK, rule->fwmask);
2169 if (rule->flags & IPRULE_LOOKUP) {
2170 if (rule->lookup >= 256)
2171 nla_put_u32(msg, FRA_TABLE, rule->lookup);
2174 if (rule->flags & IPRULE_GOTO)
2175 nla_put_u32(msg, FRA_GOTO, rule->gotoid);
2177 return system_rtnl_call(msg);
2180 int system_add_iprule(struct iprule *rule)
2182 return system_iprule(rule, RTM_NEWRULE);
2185 int system_del_iprule(struct iprule *rule)
2187 return system_iprule(rule, RTM_DELRULE);
2190 int system_flush_iprules(void)
2195 system_if_clear_entries(NULL, RTM_GETRULE, AF_INET);
2196 system_if_clear_entries(NULL, RTM_GETRULE, AF_INET6);
2198 memset(&rule, 0, sizeof(rule));
2201 rule.flags = IPRULE_INET4 | IPRULE_PRIORITY | IPRULE_LOOKUP;
2204 rule.lookup = RT_TABLE_LOCAL;
2205 rv |= system_iprule(&rule, RTM_NEWRULE);
2207 rule.priority = 32766;
2208 rule.lookup = RT_TABLE_MAIN;
2209 rv |= system_iprule(&rule, RTM_NEWRULE);
2211 rule.priority = 32767;
2212 rule.lookup = RT_TABLE_DEFAULT;
2213 rv |= system_iprule(&rule, RTM_NEWRULE);
2216 rule.flags = IPRULE_INET6 | IPRULE_PRIORITY | IPRULE_LOOKUP;
2219 rule.lookup = RT_TABLE_LOCAL;
2220 rv |= system_iprule(&rule, RTM_NEWRULE);
2222 rule.priority = 32766;
2223 rule.lookup = RT_TABLE_MAIN;
2224 rv |= system_iprule(&rule, RTM_NEWRULE);
2229 bool system_resolve_iprule_action(const char *action, unsigned int *id)
2231 return system_rtn_aton(action, id);
2234 time_t system_get_rtime(void)
2239 if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, &ts) == 0)
2242 if (gettimeofday(&tv, NULL) == 0)
2249 #define IP_DF 0x4000
2252 static int tunnel_ioctl(const char *name, int cmd, void *p)
2256 memset(&ifr, 0, sizeof(ifr));
2257 strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
2258 ifr.ifr_ifru.ifru_data = p;
2259 return ioctl(sock_ioctl, cmd, &ifr);
2262 #ifdef IFLA_IPTUN_MAX
2263 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
2264 static int system_add_gre_tunnel(const char *name, const char *kind,
2265 const unsigned int link, struct blob_attr **tb, bool v6)
2268 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
2269 struct blob_attr *cur;
2270 uint32_t ikey = 0, okey = 0, flags = 0, flowinfo = 0;
2271 uint16_t iflags = 0, oflags = 0;
2273 int ret = 0, ttl = 0;
2275 nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
2279 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
2280 nla_put_string(nlm, IFLA_IFNAME, name);
2282 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
2288 nla_put_string(nlm, IFLA_INFO_KIND, kind);
2289 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
2296 nla_put_u32(nlm, IFLA_GRE_LINK, link);
2298 if ((cur = tb[TUNNEL_ATTR_TTL]))
2299 ttl = blobmsg_get_u32(cur);
2301 if ((cur = tb[TUNNEL_ATTR_TOS])) {
2302 char *str = blobmsg_get_string(cur);
2303 if (strcmp(str, "inherit")) {
2306 if (!system_tos_aton(str, &uval)) {
2312 flowinfo |= htonl(uval << 20) & IP6_FLOWINFO_TCLASS;
2317 flags |= IP6_TNL_F_USE_ORIG_TCLASS;
2323 if ((cur = tb[TUNNEL_ATTR_DATA])) {
2324 struct blob_attr *tb_data[__GRE_DATA_ATTR_MAX];
2326 blobmsg_parse(gre_data_attr_list.params, __GRE_DATA_ATTR_MAX, tb_data,
2327 blobmsg_data(cur), blobmsg_len(cur));
2329 if ((cur = tb_data[GRE_DATA_IKEY])) {
2330 if ((ikey = blobmsg_get_u32(cur)))
2334 if ((cur = tb_data[GRE_DATA_OKEY])) {
2335 if ((okey = blobmsg_get_u32(cur)))
2339 if ((cur = tb_data[GRE_DATA_ICSUM])) {
2340 if (blobmsg_get_bool(cur))
2344 if ((cur = tb_data[GRE_DATA_OCSUM])) {
2345 if (blobmsg_get_bool(cur))
2349 if ((cur = tb_data[GRE_DATA_ISEQNO])) {
2350 if (blobmsg_get_bool(cur))
2354 if ((cur = tb[GRE_DATA_OSEQNO])) {
2355 if (blobmsg_get_bool(cur))
2361 struct in6_addr in6buf;
2362 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2363 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2367 nla_put(nlm, IFLA_GRE_LOCAL, sizeof(in6buf), &in6buf);
2370 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2371 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2375 nla_put(nlm, IFLA_GRE_REMOTE, sizeof(in6buf), &in6buf);
2377 nla_put_u8(nlm, IFLA_GRE_ENCAP_LIMIT, 4);
2380 nla_put_u32(nlm, IFLA_GRE_FLOWINFO, flowinfo);
2383 nla_put_u32(nlm, IFLA_GRE_FLAGS, flags);
2388 struct in_addr inbuf;
2391 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2392 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2396 nla_put(nlm, IFLA_GRE_LOCAL, sizeof(inbuf), &inbuf);
2399 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2400 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2404 nla_put(nlm, IFLA_GRE_REMOTE, sizeof(inbuf), &inbuf);
2406 if (IN_MULTICAST(ntohl(inbuf.s_addr))) {
2408 okey = inbuf.s_addr;
2413 ikey = inbuf.s_addr;
2419 if ((cur = tb[TUNNEL_ATTR_DF]))
2420 set_df = blobmsg_get_bool(cur);
2423 /* ttl != 0 and nopmtudisc are incompatible */
2431 nla_put_u8(nlm, IFLA_GRE_PMTUDISC, set_df ? 1 : 0);
2433 nla_put_u8(nlm, IFLA_GRE_TOS, tos);
2437 nla_put_u8(nlm, IFLA_GRE_TTL, ttl);
2440 nla_put_u16(nlm, IFLA_GRE_OFLAGS, oflags);
2443 nla_put_u16(nlm, IFLA_GRE_IFLAGS, iflags);
2446 nla_put_u32(nlm, IFLA_GRE_OKEY, okey);
2449 nla_put_u32(nlm, IFLA_GRE_IKEY, ikey);
2451 nla_nest_end(nlm, infodata);
2452 nla_nest_end(nlm, linkinfo);
2454 return system_rtnl_call(nlm);
2463 static int system_add_vti_tunnel(const char *name, const char *kind,
2464 const unsigned int link, struct blob_attr **tb, bool v6)
2467 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
2468 struct blob_attr *cur;
2471 nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
2475 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
2476 nla_put_string(nlm, IFLA_IFNAME, name);
2478 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
2484 nla_put_string(nlm, IFLA_INFO_KIND, kind);
2485 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
2492 nla_put_u32(nlm, IFLA_VTI_LINK, link);
2495 struct in6_addr in6buf;
2496 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2497 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2501 nla_put(nlm, IFLA_VTI_LOCAL, sizeof(in6buf), &in6buf);
2504 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2505 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2509 nla_put(nlm, IFLA_VTI_REMOTE, sizeof(in6buf), &in6buf);
2513 struct in_addr inbuf;
2515 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2516 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2520 nla_put(nlm, IFLA_VTI_LOCAL, sizeof(inbuf), &inbuf);
2523 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2524 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2528 nla_put(nlm, IFLA_VTI_REMOTE, sizeof(inbuf), &inbuf);
2533 if ((cur = tb[TUNNEL_ATTR_DATA])) {
2534 struct blob_attr *tb_data[__VTI_DATA_ATTR_MAX];
2535 uint32_t ikey = 0, okey = 0;
2537 blobmsg_parse(vti_data_attr_list.params, __VTI_DATA_ATTR_MAX, tb_data,
2538 blobmsg_data(cur), blobmsg_len(cur));
2540 if ((cur = tb_data[VTI_DATA_IKEY])) {
2541 if ((ikey = blobmsg_get_u32(cur)))
2542 nla_put_u32(nlm, IFLA_VTI_IKEY, htonl(ikey));
2545 if ((cur = tb_data[VTI_DATA_OKEY])) {
2546 if ((okey = blobmsg_get_u32(cur)))
2547 nla_put_u32(nlm, IFLA_VTI_OKEY, htonl(okey));
2551 nla_nest_end(nlm, infodata);
2552 nla_nest_end(nlm, linkinfo);
2554 return system_rtnl_call(nlm);
2562 #ifdef IFLA_VXLAN_MAX
2563 static int system_add_vxlan(const char *name, const unsigned int link, struct blob_attr **tb, bool v6)
2565 struct blob_attr *tb_data[__VXLAN_DATA_ATTR_MAX];
2567 struct nlattr *linkinfo, *data;
2568 struct ifinfomsg iim = { .ifi_family = AF_UNSPEC, };
2569 struct blob_attr *cur;
2572 if ((cur = tb[TUNNEL_ATTR_DATA]))
2573 blobmsg_parse(vxlan_data_attr_list.params, __VXLAN_DATA_ATTR_MAX, tb_data,
2574 blobmsg_data(cur), blobmsg_len(cur));
2578 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
2583 nlmsg_append(msg, &iim, sizeof(iim), 0);
2585 nla_put_string(msg, IFLA_IFNAME, name);
2587 if ((cur = tb_data[VXLAN_DATA_ATTR_MACADDR])) {
2588 struct ether_addr *ea = ether_aton(blobmsg_get_string(cur));
2594 nla_put(msg, IFLA_ADDRESS, ETH_ALEN, ea);
2597 if ((cur = tb[TUNNEL_ATTR_MTU])) {
2598 uint32_t mtu = blobmsg_get_u32(cur);
2599 nla_put_u32(msg, IFLA_MTU, mtu);
2602 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO))) {
2607 nla_put_string(msg, IFLA_INFO_KIND, "vxlan");
2609 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) {
2615 nla_put_u32(msg, IFLA_VXLAN_LINK, link);
2617 if ((cur = tb_data[VXLAN_DATA_ATTR_ID])) {
2618 uint32_t id = blobmsg_get_u32(cur);
2619 if (id >= (1u << 24) - 1) {
2624 nla_put_u32(msg, IFLA_VXLAN_ID, id);
2628 struct in6_addr in6buf;
2629 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2630 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2634 nla_put(msg, IFLA_VXLAN_LOCAL6, sizeof(in6buf), &in6buf);
2637 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2638 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2642 nla_put(msg, IFLA_VXLAN_GROUP6, sizeof(in6buf), &in6buf);
2645 struct in_addr inbuf;
2647 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2648 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2652 nla_put(msg, IFLA_VXLAN_LOCAL, sizeof(inbuf), &inbuf);
2655 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2656 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2660 nla_put(msg, IFLA_VXLAN_GROUP, sizeof(inbuf), &inbuf);
2664 uint32_t port = 4789;
2665 if ((cur = tb_data[VXLAN_DATA_ATTR_PORT])) {
2666 port = blobmsg_get_u32(cur);
2667 if (port < 1 || port > 65535) {
2672 nla_put_u16(msg, IFLA_VXLAN_PORT, htons(port));
2674 if ((cur = tb[TUNNEL_ATTR_TOS])) {
2675 char *str = blobmsg_get_string(cur);
2678 if (strcmp(str, "inherit")) {
2679 if (!system_tos_aton(str, &tos))
2683 nla_put_u8(msg, IFLA_VXLAN_TOS, tos);
2686 if ((cur = tb[TUNNEL_ATTR_TTL])) {
2687 uint32_t ttl = blobmsg_get_u32(cur);
2688 if (ttl < 1 || ttl > 255) {
2693 nla_put_u8(msg, IFLA_VXLAN_TTL, ttl);
2696 nla_nest_end(msg, data);
2697 nla_nest_end(msg, linkinfo);
2699 ret = system_rtnl_call(msg);
2701 D(SYSTEM, "Error adding vxlan '%s': %d\n", name, ret);
2711 static int system_add_sit_tunnel(const char *name, const unsigned int link, struct blob_attr **tb)
2713 struct blob_attr *cur;
2716 if (system_add_proto_tunnel(name, IPPROTO_IPV6, link, tb) < 0)
2720 if ((cur = tb[TUNNEL_ATTR_DATA])) {
2721 struct blob_attr *tb_data[__SIXRD_DATA_ATTR_MAX];
2723 struct ip_tunnel_6rd p6;
2725 blobmsg_parse(sixrd_data_attr_list.params, __SIXRD_DATA_ATTR_MAX, tb_data,
2726 blobmsg_data(cur), blobmsg_len(cur));
2728 memset(&p6, 0, sizeof(p6));
2730 if ((cur = tb_data[SIXRD_DATA_PREFIX])) {
2731 if (!parse_ip_and_netmask(AF_INET6, blobmsg_data(cur),
2732 &p6.prefix, &mask) || mask > 128) {
2737 p6.prefixlen = mask;
2740 if ((cur = tb_data[SIXRD_DATA_RELAY_PREFIX])) {
2741 if (!parse_ip_and_netmask(AF_INET, blobmsg_data(cur),
2742 &p6.relay_prefix, &mask) || mask > 32) {
2747 p6.relay_prefixlen = mask;
2750 if (tunnel_ioctl(name, SIOCADD6RD, &p6) < 0) {
2760 __system_del_ip_tunnel(name, tb);
2764 static int system_add_proto_tunnel(const char *name, const uint8_t proto, const unsigned int link, struct blob_attr **tb)
2766 struct blob_attr *cur;
2768 struct ip_tunnel_parm p = {
2777 if ((cur = tb[TUNNEL_ATTR_LOCAL]) &&
2778 inet_pton(AF_INET, blobmsg_data(cur), &p.iph.saddr) < 1)
2781 if ((cur = tb[TUNNEL_ATTR_REMOTE]) &&
2782 inet_pton(AF_INET, blobmsg_data(cur), &p.iph.daddr) < 1)
2785 if ((cur = tb[TUNNEL_ATTR_DF]))
2786 set_df = blobmsg_get_bool(cur);
2788 if ((cur = tb[TUNNEL_ATTR_TTL]))
2789 p.iph.ttl = blobmsg_get_u32(cur);
2791 if ((cur = tb[TUNNEL_ATTR_TOS])) {
2792 char *str = blobmsg_get_string(cur);
2793 if (strcmp(str, "inherit")) {
2796 if (!system_tos_aton(str, &uval))
2804 p.iph.frag_off = set_df ? htons(IP_DF) : 0;
2805 /* ttl !=0 and nopmtudisc are incompatible */
2806 if (p.iph.ttl && p.iph.frag_off == 0)
2809 strncpy(p.name, name, sizeof(p.name));
2811 switch (p.iph.protocol) {
2813 return tunnel_ioctl("tunl0", SIOCADDTUNNEL, &p);
2815 return tunnel_ioctl("sit0", SIOCADDTUNNEL, &p);
2822 static int __system_del_ip_tunnel(const char *name, struct blob_attr **tb)
2824 struct blob_attr *cur;
2827 if (!(cur = tb[TUNNEL_ATTR_TYPE]))
2829 str = blobmsg_data(cur);
2831 if (!strcmp(str, "greip") || !strcmp(str, "gretapip") ||
2832 !strcmp(str, "greip6") || !strcmp(str, "gretapip6") ||
2833 !strcmp(str, "vtiip") || !strcmp(str, "vtiip6") ||
2834 !strcmp(str, "vxlan") || !strcmp(str, "vxlan6"))
2835 return system_link_del(name);
2837 return tunnel_ioctl(name, SIOCDELTUNNEL, NULL);
2840 int system_del_ip_tunnel(const char *name, struct blob_attr *attr)
2842 struct blob_attr *tb[__TUNNEL_ATTR_MAX];
2844 blobmsg_parse(tunnel_attr_list.params, __TUNNEL_ATTR_MAX, tb,
2845 blob_data(attr), blob_len(attr));
2847 return __system_del_ip_tunnel(name, tb);
2850 int system_update_ipv6_mtu(struct device *dev, int mtu)
2856 snprintf(buf, sizeof(buf), "/proc/sys/net/ipv6/conf/%s/mtu",
2859 fd = open(buf, O_RDWR);
2864 ssize_t len = read(fd, buf, sizeof(buf) - 1);
2871 if (write(fd, buf, snprintf(buf, sizeof(buf), "%i", mtu)) > 0)
2880 int system_add_ip_tunnel(const char *name, struct blob_attr *attr)
2882 struct blob_attr *tb[__TUNNEL_ATTR_MAX];
2883 struct blob_attr *cur;
2886 blobmsg_parse(tunnel_attr_list.params, __TUNNEL_ATTR_MAX, tb,
2887 blob_data(attr), blob_len(attr));
2889 __system_del_ip_tunnel(name, tb);
2891 if (!(cur = tb[TUNNEL_ATTR_TYPE]))
2893 str = blobmsg_data(cur);
2895 unsigned int ttl = 0;
2896 if ((cur = tb[TUNNEL_ATTR_TTL])) {
2897 ttl = blobmsg_get_u32(cur);
2902 unsigned int link = 0;
2903 if ((cur = tb[TUNNEL_ATTR_LINK])) {
2904 struct interface *iface = vlist_find(&interfaces, blobmsg_data(cur), iface, node);
2908 if (iface->l3_dev.dev)
2909 link = iface->l3_dev.dev->ifindex;
2912 if (!strcmp(str, "sit"))
2913 return system_add_sit_tunnel(name, link, tb);
2914 #ifdef IFLA_IPTUN_MAX
2915 else if (!strcmp(str, "ipip6")) {
2916 struct nl_msg *nlm = nlmsg_alloc_simple(RTM_NEWLINK,
2917 NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
2918 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC };
2924 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
2925 nla_put_string(nlm, IFLA_IFNAME, name);
2928 nla_put_u32(nlm, IFLA_LINK, link);
2930 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
2935 nla_put_string(nlm, IFLA_INFO_KIND, "ip6tnl");
2936 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
2943 nla_put_u32(nlm, IFLA_IPTUN_LINK, link);
2945 nla_put_u8(nlm, IFLA_IPTUN_PROTO, IPPROTO_IPIP);
2946 nla_put_u8(nlm, IFLA_IPTUN_TTL, (ttl) ? ttl : 64);
2947 nla_put_u8(nlm, IFLA_IPTUN_ENCAP_LIMIT, 4);
2949 struct in6_addr in6buf;
2950 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2951 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2955 nla_put(nlm, IFLA_IPTUN_LOCAL, sizeof(in6buf), &in6buf);
2958 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2959 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2963 nla_put(nlm, IFLA_IPTUN_REMOTE, sizeof(in6buf), &in6buf);
2966 #ifdef IFLA_IPTUN_FMR_MAX
2967 if ((cur = tb[TUNNEL_ATTR_FMRS])) {
2968 struct nlattr *fmrs = nla_nest_start(nlm, IFLA_IPTUN_FMRS);
2970 struct blob_attr *fmr;
2971 unsigned rem, fmrcnt = 0;
2972 blobmsg_for_each_attr(fmr, cur, rem) {
2973 if (blobmsg_type(fmr) != BLOBMSG_TYPE_STRING)
2976 unsigned ip4len, ip6len, ealen, offset = 6;
2980 if (sscanf(blobmsg_get_string(fmr), "%47[^/]/%u,%15[^/]/%u,%u,%u",
2981 ip6buf, &ip6len, ip4buf, &ip4len, &ealen, &offset) < 5) {
2986 struct in6_addr ip6prefix;
2987 struct in_addr ip4prefix;
2988 if (inet_pton(AF_INET6, ip6buf, &ip6prefix) != 1 ||
2989 inet_pton(AF_INET, ip4buf, &ip4prefix) != 1) {
2994 struct nlattr *rule = nla_nest_start(nlm, ++fmrcnt);
2996 nla_put(nlm, IFLA_IPTUN_FMR_IP6_PREFIX, sizeof(ip6prefix), &ip6prefix);
2997 nla_put(nlm, IFLA_IPTUN_FMR_IP4_PREFIX, sizeof(ip4prefix), &ip4prefix);
2998 nla_put_u8(nlm, IFLA_IPTUN_FMR_IP6_PREFIX_LEN, ip6len);
2999 nla_put_u8(nlm, IFLA_IPTUN_FMR_IP4_PREFIX_LEN, ip4len);
3000 nla_put_u8(nlm, IFLA_IPTUN_FMR_EA_LEN, ealen);
3001 nla_put_u8(nlm, IFLA_IPTUN_FMR_OFFSET, offset);
3003 nla_nest_end(nlm, rule);
3006 nla_nest_end(nlm, fmrs);
3010 nla_nest_end(nlm, infodata);
3011 nla_nest_end(nlm, linkinfo);
3013 return system_rtnl_call(nlm);
3017 } else if (!strcmp(str, "greip")) {
3018 return system_add_gre_tunnel(name, "gre", link, tb, false);
3019 } else if (!strcmp(str, "gretapip")) {
3020 return system_add_gre_tunnel(name, "gretap", link, tb, false);
3021 } else if (!strcmp(str, "greip6")) {
3022 return system_add_gre_tunnel(name, "ip6gre", link, tb, true);
3023 } else if (!strcmp(str, "gretapip6")) {
3024 return system_add_gre_tunnel(name, "ip6gretap", link, tb, true);
3026 } else if (!strcmp(str, "vtiip")) {
3027 return system_add_vti_tunnel(name, "vti", link, tb, false);
3028 } else if (!strcmp(str, "vtiip6")) {
3029 return system_add_vti_tunnel(name, "vti6", link, tb, true);
3031 #ifdef IFLA_VXLAN_MAX
3032 } else if(!strcmp(str, "vxlan")) {
3033 return system_add_vxlan(name, link, tb, false);
3034 } else if(!strcmp(str, "vxlan6")) {
3035 return system_add_vxlan(name, link, tb, true);
3038 } else if (!strcmp(str, "ipip")) {
3039 return system_add_proto_tunnel(name, IPPROTO_IPIP, link, tb);