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, *interface_old = NULL;
547 char *cur, *end, *sep;
550 bool add, move = false;
552 if (!strncmp(data, "add@", 4))
554 else if (!strncmp(data, "remove@", 7))
556 else if (!strncmp(data, "move@", 5)) {
563 skip = strlen(data) + 1;
566 for (cur = data + skip; cur < end; cur += skip) {
567 skip = strlen(cur) + 1;
569 sep = strchr(cur, '=');
574 if (!strcmp(cur, "INTERFACE"))
576 else if (!strcmp(cur, "SUBSYSTEM")) {
578 if (strcmp(subsystem, "net") != 0)
580 } else if (!strcmp(cur, "DEVPATH_OLD")) {
581 interface_old = strrchr(sep + 1, '/');
587 if (subsystem && interface) {
588 if (move && interface_old)
597 dev = device_find(interface_old);
601 if (dev->type != &simple_device_type)
604 device_set_present(dev, false);
607 dev = device_find(interface);
611 if (dev->type != &simple_device_type)
614 if (add && system_if_force_external(dev->ifname))
617 device_set_present(dev, add);
621 handle_hotplug_event(struct uloop_fd *u, unsigned int events)
623 struct event_socket *ev = container_of(u, struct event_socket, uloop);
624 struct sockaddr_nl nla;
625 unsigned char *buf = NULL;
628 while ((size = nl_recv(ev->sock, &nla, &buf, NULL)) > 0) {
630 handle_hotplug_msg((char *) buf, size);
636 static int system_rtnl_call(struct nl_msg *msg)
640 ret = nl_send_auto_complete(sock_rtnl, msg);
646 return nl_wait_for_ack(sock_rtnl);
649 int system_bridge_delbr(struct device *bridge)
651 return ioctl(sock_ioctl, SIOCBRDELBR, bridge->ifname);
654 static int system_bridge_if(const char *bridge, struct device *dev, int cmd, void *data)
658 memset(&ifr, 0, sizeof(ifr));
660 ifr.ifr_ifindex = dev->ifindex;
663 strncpy(ifr.ifr_name, bridge, sizeof(ifr.ifr_name));
664 return ioctl(sock_ioctl, cmd, &ifr);
667 static bool system_is_bridge(const char *name, char *buf, int buflen)
671 snprintf(buf, buflen, "/sys/devices/virtual/net/%s/bridge", name);
672 if (stat(buf, &st) < 0)
678 static char *system_get_bridge(const char *name, char *buf, int buflen)
684 snprintf(buf, buflen, "/sys/devices/virtual/net/*/brif/%s/bridge", name);
685 if (glob(buf, GLOB_NOSORT, NULL, &gl) < 0)
689 len = readlink(gl.gl_pathv[0], buf, buflen);
697 path = strrchr(buf, '/');
705 system_bridge_set_wireless(struct device *bridge, struct device *dev)
707 bool mcast_to_ucast = dev->wireless_ap;
710 if (bridge->settings.flags & DEV_OPT_MULTICAST_TO_UNICAST &&
711 !bridge->settings.multicast_to_unicast)
712 mcast_to_ucast = false;
714 if (!mcast_to_ucast || dev->wireless_isolate)
717 system_bridge_set_multicast_to_unicast(dev, mcast_to_ucast ? "1" : "0");
718 system_bridge_set_hairpin_mode(dev, hairpin ? "1" : "0");
721 int system_bridge_addif(struct device *bridge, struct device *dev)
727 oldbr = system_get_bridge(dev->ifname, dev_buf, sizeof(dev_buf));
728 if (!oldbr || strcmp(oldbr, bridge->ifname) != 0)
729 ret = system_bridge_if(bridge->ifname, dev, SIOCBRADDIF, NULL);
732 system_bridge_set_wireless(bridge, dev);
734 if (dev->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
735 snprintf(buf, sizeof(buf), "%u", dev->settings.multicast_router);
736 system_bridge_set_multicast_router(dev, buf, false);
739 if (dev->settings.flags & DEV_OPT_MULTICAST_FAST_LEAVE &&
740 dev->settings.multicast_fast_leave)
741 system_bridge_set_multicast_fast_leave(dev, "1");
743 if (dev->settings.flags & DEV_OPT_LEARNING &&
744 !dev->settings.learning)
745 system_bridge_set_learning(dev, "0");
747 if (dev->settings.flags & DEV_OPT_UNICAST_FLOOD &&
748 !dev->settings.unicast_flood)
749 system_bridge_set_unicast_flood(dev, "0");
754 int system_bridge_delif(struct device *bridge, struct device *dev)
756 return system_bridge_if(bridge->ifname, dev, SIOCBRDELIF, NULL);
759 int system_if_resolve(struct device *dev)
762 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
763 if (!ioctl(sock_ioctl, SIOCGIFINDEX, &ifr))
764 return ifr.ifr_ifindex;
769 static int system_if_flags(const char *ifname, unsigned add, unsigned rem)
773 memset(&ifr, 0, sizeof(ifr));
774 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
775 ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr);
776 ifr.ifr_flags |= add;
777 ifr.ifr_flags &= ~rem;
778 return ioctl(sock_ioctl, SIOCSIFFLAGS, &ifr);
790 static bool check_ifaddr(struct nlmsghdr *hdr, int ifindex)
792 struct ifaddrmsg *ifa = NLMSG_DATA(hdr);
794 return ifa->ifa_index == ifindex;
797 static bool check_route(struct nlmsghdr *hdr, int ifindex)
799 struct rtmsg *r = NLMSG_DATA(hdr);
800 struct nlattr *tb[__RTA_MAX];
802 if (r->rtm_protocol == RTPROT_KERNEL &&
803 r->rtm_family == AF_INET6)
806 nlmsg_parse(hdr, sizeof(struct rtmsg), tb, __RTA_MAX - 1, NULL);
810 return *(int *)RTA_DATA(tb[RTA_OIF]) == ifindex;
813 static bool check_rule(struct nlmsghdr *hdr, int ifindex)
818 static int cb_clear_event(struct nl_msg *msg, void *arg)
820 struct clear_data *clr = arg;
821 struct nlmsghdr *hdr = nlmsg_hdr(msg);
822 bool (*cb)(struct nlmsghdr *, int ifindex);
828 if (hdr->nlmsg_type != RTM_NEWADDR)
835 if (hdr->nlmsg_type != RTM_NEWROUTE)
842 if (hdr->nlmsg_type != RTM_NEWRULE)
851 if (!cb(hdr, clr->dev ? clr->dev->ifindex : 0))
854 if (type == RTM_DELRULE)
855 D(SYSTEM, "Remove a rule\n");
857 D(SYSTEM, "Remove %s from device %s\n",
858 type == RTM_DELADDR ? "an address" : "a route",
860 memcpy(nlmsg_hdr(clr->msg), hdr, hdr->nlmsg_len);
861 hdr = nlmsg_hdr(clr->msg);
862 hdr->nlmsg_type = type;
863 hdr->nlmsg_flags = NLM_F_REQUEST;
865 nl_socket_disable_auto_ack(sock_rtnl);
866 nl_send_auto_complete(sock_rtnl, clr->msg);
867 nl_socket_enable_auto_ack(sock_rtnl);
873 cb_finish_event(struct nl_msg *msg, void *arg)
881 error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
884 *pending = err->error;
889 system_if_clear_entries(struct device *dev, int type, int af)
891 struct clear_data clr;
892 struct nl_cb *cb = nl_cb_alloc(NL_CB_DEFAULT);
895 .rtm_flags = RTM_F_CLONED,
897 int flags = NLM_F_DUMP;
906 clr.size = sizeof(struct rtgenmsg);
909 clr.size = sizeof(struct rtmsg);
918 clr.msg = nlmsg_alloc_simple(type, flags);
922 nlmsg_append(clr.msg, &rtm, clr.size, 0);
923 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, cb_clear_event, &clr);
924 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, cb_finish_event, &pending);
925 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &pending);
927 nl_send_auto_complete(sock_rtnl, clr.msg);
929 nl_recvmsgs(sock_rtnl, cb);
937 * Clear bridge (membership) state and bring down device
939 void system_if_clear_state(struct device *dev)
941 static char buf[256];
944 device_set_ifindex(dev, system_if_resolve(dev));
945 if (dev->external || !dev->ifindex)
948 system_if_flags(dev->ifname, 0, IFF_UP);
950 if (system_is_bridge(dev->ifname, buf, sizeof(buf))) {
951 D(SYSTEM, "Delete existing bridge named '%s'\n", dev->ifname);
952 system_bridge_delbr(dev);
956 bridge = system_get_bridge(dev->ifname, buf, sizeof(buf));
958 D(SYSTEM, "Remove device '%s' from bridge '%s'\n", dev->ifname, bridge);
959 system_bridge_if(bridge, dev, SIOCBRDELIF, NULL);
962 system_if_clear_entries(dev, RTM_GETROUTE, AF_INET);
963 system_if_clear_entries(dev, RTM_GETADDR, AF_INET);
964 system_if_clear_entries(dev, RTM_GETROUTE, AF_INET6);
965 system_if_clear_entries(dev, RTM_GETADDR, AF_INET6);
966 system_set_disable_ipv6(dev, "0");
969 static inline unsigned long
970 sec_to_jiffies(int val)
972 return (unsigned long) val * 100;
975 static void system_bridge_conf_multicast_deps(struct device *bridge,
976 struct bridge_config *cfg,
982 if (cfg->flags & BRIDGE_OPT_ROBUSTNESS ||
983 cfg->flags & BRIDGE_OPT_QUERY_INTERVAL ||
984 cfg->flags & BRIDGE_OPT_QUERY_RESPONSE_INTERVAL) {
985 val = cfg->robustness * cfg->query_interval +
986 cfg->query_response_interval;
988 snprintf(buf, buf_len, "%i", val);
989 system_bridge_set_membership_interval(bridge, buf);
991 val = cfg->robustness * cfg->query_interval +
992 cfg->query_response_interval / 2;
994 snprintf(buf, buf_len, "%i", val);
995 system_bridge_set_other_querier_timeout(bridge, buf);
998 if (cfg->flags & BRIDGE_OPT_QUERY_INTERVAL) {
999 val = cfg->query_interval / 4;
1001 snprintf(buf, buf_len, "%i", val);
1002 system_bridge_set_startup_query_interval(bridge, buf);
1006 static void system_bridge_conf_multicast(struct device *bridge,
1007 struct bridge_config *cfg,
1011 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
1012 bridge->ifname, cfg->igmp_snoop ? "1" : "0");
1014 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
1015 bridge->ifname, cfg->multicast_querier ? "1" : "0");
1017 snprintf(buf, buf_len, "%i", cfg->hash_max);
1018 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
1019 bridge->ifname, buf);
1021 if (bridge->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
1022 snprintf(buf, buf_len, "%u", bridge->settings.multicast_router);
1023 system_bridge_set_multicast_router(bridge, buf, true);
1026 if (cfg->flags & BRIDGE_OPT_ROBUSTNESS) {
1027 snprintf(buf, buf_len, "%i", cfg->robustness);
1028 system_bridge_set_robustness(bridge, buf);
1031 if (cfg->flags & BRIDGE_OPT_QUERY_INTERVAL) {
1032 snprintf(buf, buf_len, "%i", cfg->query_interval);
1033 system_bridge_set_query_interval(bridge, buf);
1036 if (cfg->flags & BRIDGE_OPT_QUERY_RESPONSE_INTERVAL) {
1037 snprintf(buf, buf_len, "%i", cfg->query_response_interval);
1038 system_bridge_set_query_response_interval(bridge, buf);
1041 if (cfg->flags & BRIDGE_OPT_LAST_MEMBER_INTERVAL) {
1042 snprintf(buf, buf_len, "%i", cfg->last_member_interval);
1043 system_bridge_set_last_member_interval(bridge, buf);
1046 system_bridge_conf_multicast_deps(bridge, cfg, buf, buf_len);
1049 int system_bridge_addbr(struct device *bridge, struct bridge_config *cfg)
1052 unsigned long args[4] = {};
1054 if (ioctl(sock_ioctl, SIOCBRADDBR, bridge->ifname) < 0)
1057 args[0] = BRCTL_SET_BRIDGE_STP_STATE;
1058 args[1] = !!cfg->stp;
1059 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1061 args[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY;
1062 args[1] = sec_to_jiffies(cfg->forward_delay);
1063 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1065 system_bridge_conf_multicast(bridge, cfg, buf, sizeof(buf));
1067 args[0] = BRCTL_SET_BRIDGE_PRIORITY;
1068 args[1] = cfg->priority;
1069 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1071 if (cfg->flags & BRIDGE_OPT_AGEING_TIME) {
1072 args[0] = BRCTL_SET_AGEING_TIME;
1073 args[1] = sec_to_jiffies(cfg->ageing_time);
1074 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1077 if (cfg->flags & BRIDGE_OPT_HELLO_TIME) {
1078 args[0] = BRCTL_SET_BRIDGE_HELLO_TIME;
1079 args[1] = sec_to_jiffies(cfg->hello_time);
1080 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1083 if (cfg->flags & BRIDGE_OPT_MAX_AGE) {
1084 args[0] = BRCTL_SET_BRIDGE_MAX_AGE;
1085 args[1] = sec_to_jiffies(cfg->max_age);
1086 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1092 int system_macvlan_add(struct device *macvlan, struct device *dev, struct macvlan_config *cfg)
1095 struct nlattr *linkinfo, *data;
1096 struct ifinfomsg iim = { .ifi_family = AF_UNSPEC, };
1098 static const struct {
1100 enum macvlan_mode val;
1102 { "private", MACVLAN_MODE_PRIVATE },
1103 { "vepa", MACVLAN_MODE_VEPA },
1104 { "bridge", MACVLAN_MODE_BRIDGE },
1105 { "passthru", MACVLAN_MODE_PASSTHRU },
1108 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
1113 nlmsg_append(msg, &iim, sizeof(iim), 0);
1115 if (cfg->flags & MACVLAN_OPT_MACADDR)
1116 nla_put(msg, IFLA_ADDRESS, sizeof(cfg->macaddr), cfg->macaddr);
1117 nla_put_string(msg, IFLA_IFNAME, macvlan->ifname);
1118 nla_put_u32(msg, IFLA_LINK, dev->ifindex);
1120 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
1121 goto nla_put_failure;
1123 nla_put_string(msg, IFLA_INFO_KIND, "macvlan");
1125 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
1126 goto nla_put_failure;
1129 for (i = 0; i < ARRAY_SIZE(modes); i++) {
1130 if (strcmp(cfg->mode, modes[i].name) != 0)
1133 nla_put_u32(msg, IFLA_MACVLAN_MODE, modes[i].val);
1138 nla_nest_end(msg, data);
1139 nla_nest_end(msg, linkinfo);
1141 rv = system_rtnl_call(msg);
1143 D(SYSTEM, "Error adding macvlan '%s' over '%s': %d\n", macvlan->ifname, dev->ifname, rv);
1152 static int system_link_del(const char *ifname)
1155 struct ifinfomsg iim = {
1156 .ifi_family = AF_UNSPEC,
1160 msg = nlmsg_alloc_simple(RTM_DELLINK, NLM_F_REQUEST);
1165 nlmsg_append(msg, &iim, sizeof(iim), 0);
1166 nla_put_string(msg, IFLA_IFNAME, ifname);
1167 return system_rtnl_call(msg);
1170 int system_macvlan_del(struct device *macvlan)
1172 return system_link_del(macvlan->ifname);
1175 int system_veth_add(struct device *veth, struct veth_config *cfg)
1178 struct ifinfomsg empty_iim = {};
1179 struct nlattr *linkinfo, *data, *veth_info;
1182 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
1187 nlmsg_append(msg, &empty_iim, sizeof(empty_iim), 0);
1189 if (cfg->flags & VETH_OPT_MACADDR)
1190 nla_put(msg, IFLA_ADDRESS, sizeof(cfg->macaddr), cfg->macaddr);
1191 nla_put_string(msg, IFLA_IFNAME, veth->ifname);
1193 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
1194 goto nla_put_failure;
1196 nla_put_string(msg, IFLA_INFO_KIND, "veth");
1198 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
1199 goto nla_put_failure;
1201 if (!(veth_info = nla_nest_start(msg, VETH_INFO_PEER)))
1202 goto nla_put_failure;
1204 nlmsg_append(msg, &empty_iim, sizeof(empty_iim), 0);
1206 if (cfg->flags & VETH_OPT_PEER_NAME)
1207 nla_put_string(msg, IFLA_IFNAME, cfg->peer_name);
1208 if (cfg->flags & VETH_OPT_PEER_MACADDR)
1209 nla_put(msg, IFLA_ADDRESS, sizeof(cfg->peer_macaddr), cfg->peer_macaddr);
1211 nla_nest_end(msg, veth_info);
1212 nla_nest_end(msg, data);
1213 nla_nest_end(msg, linkinfo);
1215 rv = system_rtnl_call(msg);
1217 if (cfg->flags & VETH_OPT_PEER_NAME)
1218 D(SYSTEM, "Error adding veth '%s' with peer '%s': %d\n", veth->ifname, cfg->peer_name, rv);
1220 D(SYSTEM, "Error adding veth '%s': %d\n", veth->ifname, rv);
1230 int system_veth_del(struct device *veth)
1232 return system_link_del(veth->ifname);
1235 static int system_vlan(struct device *dev, int id)
1237 struct vlan_ioctl_args ifr = {
1238 .cmd = SET_VLAN_NAME_TYPE_CMD,
1239 .u.name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD,
1242 ioctl(sock_ioctl, SIOCSIFVLAN, &ifr);
1245 ifr.cmd = DEL_VLAN_CMD;
1248 ifr.cmd = ADD_VLAN_CMD;
1251 strncpy(ifr.device1, dev->ifname, sizeof(ifr.device1));
1252 return ioctl(sock_ioctl, SIOCSIFVLAN, &ifr);
1255 int system_vlan_add(struct device *dev, int id)
1257 return system_vlan(dev, id);
1260 int system_vlan_del(struct device *dev)
1262 return system_vlan(dev, -1);
1265 int system_vlandev_add(struct device *vlandev, struct device *dev, struct vlandev_config *cfg)
1268 struct nlattr *linkinfo, *data;
1269 struct ifinfomsg iim = { .ifi_family = AF_UNSPEC };
1272 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
1277 nlmsg_append(msg, &iim, sizeof(iim), 0);
1278 nla_put_string(msg, IFLA_IFNAME, vlandev->ifname);
1279 nla_put_u32(msg, IFLA_LINK, dev->ifindex);
1281 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
1282 goto nla_put_failure;
1284 nla_put_string(msg, IFLA_INFO_KIND, "vlan");
1286 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
1287 goto nla_put_failure;
1289 nla_put_u16(msg, IFLA_VLAN_ID, cfg->vid);
1291 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1292 nla_put_u16(msg, IFLA_VLAN_PROTOCOL, htons(cfg->proto));
1294 if(cfg->proto == VLAN_PROTO_8021AD)
1295 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);
1298 nla_nest_end(msg, data);
1299 nla_nest_end(msg, linkinfo);
1301 rv = system_rtnl_call(msg);
1303 D(SYSTEM, "Error adding vlandev '%s' over '%s': %d\n", vlandev->ifname, dev->ifname, rv);
1312 int system_vlandev_del(struct device *vlandev)
1314 return system_link_del(vlandev->ifname);
1318 system_if_get_settings(struct device *dev, struct device_settings *s)
1323 memset(&ifr, 0, sizeof(ifr));
1324 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
1326 if (ioctl(sock_ioctl, SIOCGIFMTU, &ifr) == 0) {
1327 s->mtu = ifr.ifr_mtu;
1328 s->flags |= DEV_OPT_MTU;
1331 s->mtu6 = system_update_ipv6_mtu(dev, 0);
1333 s->flags |= DEV_OPT_MTU6;
1335 if (ioctl(sock_ioctl, SIOCGIFTXQLEN, &ifr) == 0) {
1336 s->txqueuelen = ifr.ifr_qlen;
1337 s->flags |= DEV_OPT_TXQUEUELEN;
1340 if (ioctl(sock_ioctl, SIOCGIFHWADDR, &ifr) == 0) {
1341 memcpy(s->macaddr, &ifr.ifr_hwaddr.sa_data, sizeof(s->macaddr));
1342 s->flags |= DEV_OPT_MACADDR;
1345 if (!system_get_disable_ipv6(dev, buf, sizeof(buf))) {
1346 s->ipv6 = !strtoul(buf, NULL, 0);
1347 s->flags |= DEV_OPT_IPV6;
1350 if (ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr) == 0) {
1351 s->promisc = ifr.ifr_flags & IFF_PROMISC;
1352 s->flags |= DEV_OPT_PROMISC;
1354 s->multicast = ifr.ifr_flags & IFF_MULTICAST;
1355 s->flags |= DEV_OPT_MULTICAST;
1358 if (!system_get_rpfilter(dev, buf, sizeof(buf))) {
1359 s->rpfilter = strtoul(buf, NULL, 0);
1360 s->flags |= DEV_OPT_RPFILTER;
1363 if (!system_get_acceptlocal(dev, buf, sizeof(buf))) {
1364 s->acceptlocal = strtoul(buf, NULL, 0);
1365 s->flags |= DEV_OPT_ACCEPTLOCAL;
1368 if (!system_get_igmpversion(dev, buf, sizeof(buf))) {
1369 s->igmpversion = strtoul(buf, NULL, 0);
1370 s->flags |= DEV_OPT_IGMPVERSION;
1373 if (!system_get_mldversion(dev, buf, sizeof(buf))) {
1374 s->mldversion = strtoul(buf, NULL, 0);
1375 s->flags |= DEV_OPT_MLDVERSION;
1378 if (!system_get_neigh4reachabletime(dev, buf, sizeof(buf))) {
1379 s->neigh4reachabletime = strtoul(buf, NULL, 0);
1380 s->flags |= DEV_OPT_NEIGHREACHABLETIME;
1383 if (!system_get_neigh6reachabletime(dev, buf, sizeof(buf))) {
1384 s->neigh6reachabletime = strtoul(buf, NULL, 0);
1385 s->flags |= DEV_OPT_NEIGHREACHABLETIME;
1388 if (!system_get_neigh4locktime(dev, buf, sizeof(buf))) {
1389 s->neigh4locktime = strtol(buf, NULL, 0);
1390 s->flags |= DEV_OPT_NEIGHLOCKTIME;
1393 if (!system_get_neigh4gcstaletime(dev, buf, sizeof(buf))) {
1394 s->neigh4gcstaletime = strtoul(buf, NULL, 0);
1395 s->flags |= DEV_OPT_NEIGHGCSTALETIME;
1398 if (!system_get_neigh6gcstaletime(dev, buf, sizeof(buf))) {
1399 s->neigh6gcstaletime = strtoul(buf, NULL, 0);
1400 s->flags |= DEV_OPT_NEIGHGCSTALETIME;
1403 if (!system_get_dadtransmits(dev, buf, sizeof(buf))) {
1404 s->dadtransmits = strtoul(buf, NULL, 0);
1405 s->flags |= DEV_OPT_DADTRANSMITS;
1408 if (!system_get_sendredirects(dev, buf, sizeof(buf))) {
1409 s->sendredirects = strtoul(buf, NULL, 0);
1410 s->flags |= DEV_OPT_SENDREDIRECTS;
1415 system_if_apply_settings(struct device *dev, struct device_settings *s, unsigned int apply_mask)
1420 memset(&ifr, 0, sizeof(ifr));
1421 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
1422 if (s->flags & DEV_OPT_MTU & apply_mask) {
1423 ifr.ifr_mtu = s->mtu;
1424 if (ioctl(sock_ioctl, SIOCSIFMTU, &ifr) < 0)
1425 s->flags &= ~DEV_OPT_MTU;
1427 if (s->flags & DEV_OPT_MTU6 & apply_mask) {
1428 system_update_ipv6_mtu(dev, s->mtu6);
1430 if (s->flags & DEV_OPT_TXQUEUELEN & apply_mask) {
1431 ifr.ifr_qlen = s->txqueuelen;
1432 if (ioctl(sock_ioctl, SIOCSIFTXQLEN, &ifr) < 0)
1433 s->flags &= ~DEV_OPT_TXQUEUELEN;
1435 if ((s->flags & DEV_OPT_MACADDR & apply_mask) && !dev->external) {
1436 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
1437 memcpy(&ifr.ifr_hwaddr.sa_data, s->macaddr, sizeof(s->macaddr));
1438 if (ioctl(sock_ioctl, SIOCSIFHWADDR, &ifr) < 0)
1439 s->flags &= ~DEV_OPT_MACADDR;
1441 if (s->flags & DEV_OPT_IPV6 & apply_mask)
1442 system_set_disable_ipv6(dev, s->ipv6 ? "0" : "1");
1443 if (s->flags & DEV_OPT_PROMISC & apply_mask) {
1444 if (system_if_flags(dev->ifname, s->promisc ? IFF_PROMISC : 0,
1445 !s->promisc ? IFF_PROMISC : 0) < 0)
1446 s->flags &= ~DEV_OPT_PROMISC;
1448 if (s->flags & DEV_OPT_RPFILTER & apply_mask) {
1449 snprintf(buf, sizeof(buf), "%u", s->rpfilter);
1450 system_set_rpfilter(dev, buf);
1452 if (s->flags & DEV_OPT_ACCEPTLOCAL & apply_mask)
1453 system_set_acceptlocal(dev, s->acceptlocal ? "1" : "0");
1454 if (s->flags & DEV_OPT_IGMPVERSION & apply_mask) {
1455 snprintf(buf, sizeof(buf), "%u", s->igmpversion);
1456 system_set_igmpversion(dev, buf);
1458 if (s->flags & DEV_OPT_MLDVERSION & apply_mask) {
1459 snprintf(buf, sizeof(buf), "%u", s->mldversion);
1460 system_set_mldversion(dev, buf);
1462 if (s->flags & DEV_OPT_NEIGHREACHABLETIME & apply_mask) {
1463 snprintf(buf, sizeof(buf), "%u", s->neigh4reachabletime);
1464 system_set_neigh4reachabletime(dev, buf);
1465 snprintf(buf, sizeof(buf), "%u", s->neigh6reachabletime);
1466 system_set_neigh6reachabletime(dev, buf);
1468 if (s->flags & DEV_OPT_NEIGHLOCKTIME & apply_mask) {
1469 snprintf(buf, sizeof(buf), "%d", s->neigh4locktime);
1470 system_set_neigh4locktime(dev, buf);
1472 if (s->flags & DEV_OPT_NEIGHGCSTALETIME & apply_mask) {
1473 snprintf(buf, sizeof(buf), "%u", s->neigh4gcstaletime);
1474 system_set_neigh4gcstaletime(dev, buf);
1475 snprintf(buf, sizeof(buf), "%u", s->neigh6gcstaletime);
1476 system_set_neigh6gcstaletime(dev, buf);
1478 if (s->flags & DEV_OPT_DADTRANSMITS & apply_mask) {
1479 snprintf(buf, sizeof(buf), "%u", s->dadtransmits);
1480 system_set_dadtransmits(dev, buf);
1482 if (s->flags & DEV_OPT_MULTICAST & apply_mask) {
1483 if (system_if_flags(dev->ifname, s->multicast ? IFF_MULTICAST : 0,
1484 !s->multicast ? IFF_MULTICAST : 0) < 0)
1485 s->flags &= ~DEV_OPT_MULTICAST;
1487 if (s->flags & DEV_OPT_SENDREDIRECTS & apply_mask)
1488 system_set_sendredirects(dev, s->sendredirects ? "1" : "0");
1491 int system_if_up(struct device *dev)
1493 system_if_get_settings(dev, &dev->orig_settings);
1494 /* Only keep orig settings based on what needs to be set */
1495 dev->orig_settings.valid_flags = dev->orig_settings.flags;
1496 dev->orig_settings.flags &= dev->settings.flags;
1497 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
1498 return system_if_flags(dev->ifname, IFF_UP, 0);
1501 int system_if_down(struct device *dev)
1503 int ret = system_if_flags(dev->ifname, 0, IFF_UP);
1504 system_if_apply_settings(dev, &dev->orig_settings, dev->orig_settings.flags);
1508 struct if_check_data {
1514 #ifndef IFF_LOWER_UP
1515 #define IFF_LOWER_UP 0x10000
1518 static int cb_if_check_valid(struct nl_msg *msg, void *arg)
1520 struct nlmsghdr *nh = nlmsg_hdr(msg);
1521 struct ifinfomsg *ifi = NLMSG_DATA(nh);
1522 struct if_check_data *chk = (struct if_check_data *)arg;
1524 if (nh->nlmsg_type != RTM_NEWLINK)
1527 device_set_present(chk->dev, ifi->ifi_index > 0 ? true : false);
1528 device_set_link(chk->dev, ifi->ifi_flags & IFF_LOWER_UP ? true : false);
1533 static int cb_if_check_ack(struct nl_msg *msg, void *arg)
1535 struct if_check_data *chk = (struct if_check_data *)arg;
1540 static int cb_if_check_error(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
1542 struct if_check_data *chk = (struct if_check_data *)arg;
1544 device_set_present(chk->dev, false);
1545 device_set_link(chk->dev, false);
1546 chk->pending = err->error;
1551 int system_if_check(struct device *dev)
1553 struct nl_cb *cb = nl_cb_alloc(NL_CB_DEFAULT);
1555 struct ifinfomsg ifi = {
1556 .ifi_family = AF_UNSPEC,
1559 struct if_check_data chk = {
1565 msg = nlmsg_alloc_simple(RTM_GETLINK, 0);
1569 if (nlmsg_append(msg, &ifi, sizeof(ifi), 0) ||
1570 nla_put_string(msg, IFLA_IFNAME, dev->ifname))
1573 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, cb_if_check_valid, &chk);
1574 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, cb_if_check_ack, &chk);
1575 nl_cb_err(cb, NL_CB_CUSTOM, cb_if_check_error, &chk);
1577 nl_send_auto_complete(sock_rtnl, msg);
1578 while (chk.pending > 0)
1579 nl_recvmsgs(sock_rtnl, cb);
1591 system_if_get_parent(struct device *dev)
1593 char buf[64], *devname;
1594 int ifindex, iflink, len;
1597 snprintf(buf, sizeof(buf), "/sys/class/net/%s/iflink", dev->ifname);
1598 f = fopen(buf, "r");
1602 len = fread(buf, 1, sizeof(buf) - 1, f);
1609 iflink = strtoul(buf, NULL, 0);
1610 ifindex = system_if_resolve(dev);
1611 if (!iflink || iflink == ifindex)
1614 devname = if_indextoname(iflink, buf);
1618 return device_get(devname, true);
1622 read_string_file(int dir_fd, const char *file, char *buf, int len)
1628 fd = openat(dir_fd, file, O_RDONLY);
1633 len = read(fd, buf, len - 1);
1637 } else if (len > 0) {
1640 c = strchr(buf, '\n');
1653 read_uint64_file(int dir_fd, const char *file, uint64_t *val)
1658 ret = read_string_file(dir_fd, file, buf, sizeof(buf));
1660 *val = strtoull(buf, NULL, 0);
1665 /* Assume advertised flags == supported flags */
1666 static const struct {
1669 } ethtool_link_modes[] = {
1670 { ADVERTISED_10baseT_Half, "10H" },
1671 { ADVERTISED_10baseT_Full, "10F" },
1672 { ADVERTISED_100baseT_Half, "100H" },
1673 { ADVERTISED_100baseT_Full, "100F" },
1674 { ADVERTISED_1000baseT_Half, "1000H" },
1675 { ADVERTISED_1000baseT_Full, "1000F" },
1678 static void system_add_link_modes(struct blob_buf *b, __u32 mask)
1681 for (i = 0; i < ARRAY_SIZE(ethtool_link_modes); i++) {
1682 if (mask & ethtool_link_modes[i].mask)
1683 blobmsg_add_string(b, NULL, ethtool_link_modes[i].name);
1688 system_if_force_external(const char *ifname)
1693 snprintf(buf, sizeof(buf), "/sys/class/net/%s/phy80211", ifname);
1694 return stat(buf, &s) == 0;
1698 system_if_dump_info(struct device *dev, struct blob_buf *b)
1700 struct ethtool_cmd ecmd;
1706 snprintf(buf, sizeof(buf), "/sys/class/net/%s", dev->ifname);
1707 dir_fd = open(buf, O_DIRECTORY);
1709 memset(&ecmd, 0, sizeof(ecmd));
1710 memset(&ifr, 0, sizeof(ifr));
1711 strcpy(ifr.ifr_name, dev->ifname);
1712 ifr.ifr_data = (caddr_t) &ecmd;
1713 ecmd.cmd = ETHTOOL_GSET;
1715 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) == 0) {
1716 c = blobmsg_open_array(b, "link-advertising");
1717 system_add_link_modes(b, ecmd.advertising);
1718 blobmsg_close_array(b, c);
1720 c = blobmsg_open_array(b, "link-supported");
1721 system_add_link_modes(b, ecmd.supported);
1722 blobmsg_close_array(b, c);
1724 s = blobmsg_alloc_string_buffer(b, "speed", 8);
1725 snprintf(s, 8, "%d%c", ethtool_cmd_speed(&ecmd),
1726 ecmd.duplex == DUPLEX_HALF ? 'H' : 'F');
1727 blobmsg_add_string_buffer(b);
1735 system_if_dump_stats(struct device *dev, struct blob_buf *b)
1737 const char *const counters[] = {
1738 "collisions", "rx_frame_errors", "tx_compressed",
1739 "multicast", "rx_length_errors", "tx_dropped",
1740 "rx_bytes", "rx_missed_errors", "tx_errors",
1741 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1742 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1743 "rx_dropped", "tx_aborted_errors", "tx_packets",
1744 "rx_errors", "tx_bytes", "tx_window_errors",
1745 "rx_fifo_errors", "tx_carrier_errors",
1752 snprintf(buf, sizeof(buf), "/sys/class/net/%s/statistics", dev->ifname);
1753 stats_dir = open(buf, O_DIRECTORY);
1757 for (i = 0; i < ARRAY_SIZE(counters); i++)
1758 if (read_uint64_file(stats_dir, counters[i], &val))
1759 blobmsg_add_u64(b, counters[i], val);
1765 static int system_addr(struct device *dev, struct device_addr *addr, int cmd)
1767 bool v4 = ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET4);
1768 int alen = v4 ? 4 : 16;
1769 unsigned int flags = 0;
1770 struct ifaddrmsg ifa = {
1771 .ifa_family = (alen == 4) ? AF_INET : AF_INET6,
1772 .ifa_prefixlen = addr->mask,
1773 .ifa_index = dev->ifindex,
1777 if (cmd == RTM_NEWADDR)
1778 flags |= NLM_F_CREATE | NLM_F_REPLACE;
1780 msg = nlmsg_alloc_simple(cmd, flags);
1784 nlmsg_append(msg, &ifa, sizeof(ifa), 0);
1785 nla_put(msg, IFA_LOCAL, alen, &addr->addr);
1787 if (addr->broadcast)
1788 nla_put_u32(msg, IFA_BROADCAST, addr->broadcast);
1789 if (addr->point_to_point)
1790 nla_put_u32(msg, IFA_ADDRESS, addr->point_to_point);
1792 time_t now = system_get_rtime();
1793 struct ifa_cacheinfo cinfo = {0xffffffffU, 0xffffffffU, 0, 0};
1795 if (addr->preferred_until) {
1796 int64_t preferred = addr->preferred_until - now;
1799 else if (preferred > UINT32_MAX)
1800 preferred = UINT32_MAX;
1802 cinfo.ifa_prefered = preferred;
1805 if (addr->valid_until) {
1806 int64_t valid = addr->valid_until - now;
1811 else if (valid > UINT32_MAX)
1814 cinfo.ifa_valid = valid;
1817 nla_put(msg, IFA_CACHEINFO, sizeof(cinfo), &cinfo);
1819 if (cmd == RTM_NEWADDR && (addr->flags & DEVADDR_OFFLINK))
1820 nla_put_u32(msg, IFA_FLAGS, IFA_F_NOPREFIXROUTE);
1823 return system_rtnl_call(msg);
1826 int system_add_address(struct device *dev, struct device_addr *addr)
1828 return system_addr(dev, addr, RTM_NEWADDR);
1831 int system_del_address(struct device *dev, struct device_addr *addr)
1833 return system_addr(dev, addr, RTM_DELADDR);
1836 static int system_rt(struct device *dev, struct device_route *route, int cmd)
1838 int alen = ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET4) ? 4 : 16;
1840 unsigned int flags = 0;
1843 have_gw = !!route->nexthop.in.s_addr;
1845 have_gw = route->nexthop.in6.s6_addr32[0] ||
1846 route->nexthop.in6.s6_addr32[1] ||
1847 route->nexthop.in6.s6_addr32[2] ||
1848 route->nexthop.in6.s6_addr32[3];
1850 unsigned int table = (route->flags & (DEVROUTE_TABLE | DEVROUTE_SRCTABLE))
1851 ? route->table : RT_TABLE_MAIN;
1853 struct rtmsg rtm = {
1854 .rtm_family = (alen == 4) ? AF_INET : AF_INET6,
1855 .rtm_dst_len = route->mask,
1856 .rtm_src_len = route->sourcemask,
1857 .rtm_table = (table < 256) ? table : RT_TABLE_UNSPEC,
1858 .rtm_protocol = (route->flags & DEVROUTE_PROTO) ? route->proto : RTPROT_STATIC,
1859 .rtm_scope = RT_SCOPE_NOWHERE,
1860 .rtm_type = (cmd == RTM_DELROUTE) ? 0: RTN_UNICAST,
1861 .rtm_flags = (route->flags & DEVROUTE_ONLINK) ? RTNH_F_ONLINK : 0,
1865 if (cmd == RTM_NEWROUTE) {
1866 flags |= NLM_F_CREATE | NLM_F_REPLACE;
1868 if (!dev) { // Add null-route
1869 rtm.rtm_scope = RT_SCOPE_UNIVERSE;
1870 rtm.rtm_type = RTN_UNREACHABLE;
1873 rtm.rtm_scope = (have_gw) ? RT_SCOPE_UNIVERSE : RT_SCOPE_LINK;
1876 if (route->flags & DEVROUTE_TYPE) {
1877 rtm.rtm_type = route->type;
1878 if (!(route->flags & (DEVROUTE_TABLE | DEVROUTE_SRCTABLE))) {
1879 if (rtm.rtm_type == RTN_LOCAL || rtm.rtm_type == RTN_BROADCAST ||
1880 rtm.rtm_type == RTN_NAT || rtm.rtm_type == RTN_ANYCAST)
1881 rtm.rtm_table = RT_TABLE_LOCAL;
1884 if (rtm.rtm_type == RTN_LOCAL || rtm.rtm_type == RTN_NAT) {
1885 rtm.rtm_scope = RT_SCOPE_HOST;
1886 } else if (rtm.rtm_type == RTN_BROADCAST || rtm.rtm_type == RTN_MULTICAST ||
1887 rtm.rtm_type == RTN_ANYCAST) {
1888 rtm.rtm_scope = RT_SCOPE_LINK;
1889 } else if (rtm.rtm_type == RTN_BLACKHOLE || rtm.rtm_type == RTN_UNREACHABLE ||
1890 rtm.rtm_type == RTN_PROHIBIT || rtm.rtm_type == RTN_FAILED_POLICY ||
1891 rtm.rtm_type == RTN_THROW) {
1892 rtm.rtm_scope = RT_SCOPE_UNIVERSE;
1897 msg = nlmsg_alloc_simple(cmd, flags);
1901 nlmsg_append(msg, &rtm, sizeof(rtm), 0);
1904 nla_put(msg, RTA_DST, alen, &route->addr);
1906 if (route->sourcemask) {
1907 if (rtm.rtm_family == AF_INET)
1908 nla_put(msg, RTA_PREFSRC, alen, &route->source);
1910 nla_put(msg, RTA_SRC, alen, &route->source);
1913 if (route->metric > 0)
1914 nla_put_u32(msg, RTA_PRIORITY, route->metric);
1917 nla_put(msg, RTA_GATEWAY, alen, &route->nexthop);
1920 nla_put_u32(msg, RTA_OIF, dev->ifindex);
1923 nla_put_u32(msg, RTA_TABLE, table);
1925 if (route->flags & DEVROUTE_MTU) {
1926 struct nlattr *metrics;
1928 if (!(metrics = nla_nest_start(msg, RTA_METRICS)))
1929 goto nla_put_failure;
1931 nla_put_u32(msg, RTAX_MTU, route->mtu);
1933 nla_nest_end(msg, metrics);
1936 return system_rtnl_call(msg);
1943 int system_add_route(struct device *dev, struct device_route *route)
1945 return system_rt(dev, route, RTM_NEWROUTE);
1948 int system_del_route(struct device *dev, struct device_route *route)
1950 return system_rt(dev, route, RTM_DELROUTE);
1953 int system_flush_routes(void)
1955 const char *names[] = {
1956 "/proc/sys/net/ipv4/route/flush",
1957 "/proc/sys/net/ipv6/route/flush"
1961 for (i = 0; i < ARRAY_SIZE(names); i++) {
1962 fd = open(names[i], O_WRONLY);
1966 if (write(fd, "-1", 2)) {}
1972 bool system_resolve_rt_type(const char *type, unsigned int *id)
1974 return system_rtn_aton(type, id);
1977 bool system_resolve_rt_proto(const char *type, unsigned int *id)
1981 unsigned int n, proto = 256;
1982 n = strtoul(type, &e, 0);
1983 if (!*e && e != type)
1985 else if (!strcmp(type, "unspec"))
1986 proto = RTPROT_UNSPEC;
1987 else if (!strcmp(type, "kernel"))
1988 proto = RTPROT_KERNEL;
1989 else if (!strcmp(type, "boot"))
1990 proto = RTPROT_BOOT;
1991 else if (!strcmp(type, "static"))
1992 proto = RTPROT_STATIC;
1993 else if ((f = fopen("/etc/iproute2/rt_protos", "r")) != NULL) {
1994 while (fgets(buf, sizeof(buf) - 1, f) != NULL) {
1995 if ((e = strtok(buf, " \t\n")) == NULL || *e == '#')
1998 n = strtoul(e, NULL, 10);
1999 e = strtok(NULL, " \t\n");
2001 if (e && !strcmp(e, type)) {
2016 bool system_resolve_rt_table(const char *name, unsigned int *id)
2020 unsigned int n, table = RT_TABLE_UNSPEC;
2022 /* first try to parse table as number */
2023 if ((n = strtoul(name, &e, 0)) > 0 && !*e)
2026 /* handle well known aliases */
2027 else if (!strcmp(name, "default"))
2028 table = RT_TABLE_DEFAULT;
2029 else if (!strcmp(name, "main"))
2030 table = RT_TABLE_MAIN;
2031 else if (!strcmp(name, "local"))
2032 table = RT_TABLE_LOCAL;
2034 /* try to look up name in /etc/iproute2/rt_tables */
2035 else if ((f = fopen("/etc/iproute2/rt_tables", "r")) != NULL)
2037 while (fgets(buf, sizeof(buf) - 1, f) != NULL)
2039 if ((e = strtok(buf, " \t\n")) == NULL || *e == '#')
2042 n = strtoul(e, NULL, 10);
2043 e = strtok(NULL, " \t\n");
2045 if (e && !strcmp(e, name))
2055 if (table == RT_TABLE_UNSPEC)
2062 bool system_is_default_rt_table(unsigned int id)
2064 return (id == RT_TABLE_MAIN);
2067 bool system_resolve_rpfilter(const char *filter, unsigned int *id)
2072 if (!strcmp(filter, "strict"))
2074 else if (!strcmp(filter, "loose"))
2077 n = strtoul(filter, &e, 0);
2078 if (*e || e == filter || n > 2)
2086 static int system_iprule(struct iprule *rule, int cmd)
2088 int alen = ((rule->flags & IPRULE_FAMILY) == IPRULE_INET4) ? 4 : 16;
2091 struct rtmsg rtm = {
2092 .rtm_family = (alen == 4) ? AF_INET : AF_INET6,
2093 .rtm_protocol = RTPROT_STATIC,
2094 .rtm_scope = RT_SCOPE_UNIVERSE,
2095 .rtm_table = RT_TABLE_UNSPEC,
2096 .rtm_type = RTN_UNSPEC,
2100 if (cmd == RTM_NEWRULE)
2101 rtm.rtm_type = RTN_UNICAST;
2104 rtm.rtm_flags |= FIB_RULE_INVERT;
2106 if (rule->flags & IPRULE_SRC)
2107 rtm.rtm_src_len = rule->src_mask;
2109 if (rule->flags & IPRULE_DEST)
2110 rtm.rtm_dst_len = rule->dest_mask;
2112 if (rule->flags & IPRULE_TOS)
2113 rtm.rtm_tos = rule->tos;
2115 if (rule->flags & IPRULE_LOOKUP) {
2116 if (rule->lookup < 256)
2117 rtm.rtm_table = rule->lookup;
2120 if (rule->flags & IPRULE_ACTION)
2121 rtm.rtm_type = rule->action;
2122 else if (rule->flags & IPRULE_GOTO)
2123 rtm.rtm_type = FR_ACT_GOTO;
2124 else if (!(rule->flags & (IPRULE_LOOKUP | IPRULE_ACTION | IPRULE_GOTO)))
2125 rtm.rtm_type = FR_ACT_NOP;
2127 msg = nlmsg_alloc_simple(cmd, NLM_F_REQUEST);
2132 nlmsg_append(msg, &rtm, sizeof(rtm), 0);
2134 if (rule->flags & IPRULE_IN)
2135 nla_put(msg, FRA_IFNAME, strlen(rule->in_dev) + 1, rule->in_dev);
2137 if (rule->flags & IPRULE_OUT)
2138 nla_put(msg, FRA_OIFNAME, strlen(rule->out_dev) + 1, rule->out_dev);
2140 if (rule->flags & IPRULE_SRC)
2141 nla_put(msg, FRA_SRC, alen, &rule->src_addr);
2143 if (rule->flags & IPRULE_DEST)
2144 nla_put(msg, FRA_DST, alen, &rule->dest_addr);
2146 if (rule->flags & IPRULE_PRIORITY)
2147 nla_put_u32(msg, FRA_PRIORITY, rule->priority);
2148 else if (cmd == RTM_NEWRULE)
2149 nla_put_u32(msg, FRA_PRIORITY, rule->order);
2151 if (rule->flags & IPRULE_FWMARK)
2152 nla_put_u32(msg, FRA_FWMARK, rule->fwmark);
2154 if (rule->flags & IPRULE_FWMASK)
2155 nla_put_u32(msg, FRA_FWMASK, rule->fwmask);
2157 if (rule->flags & IPRULE_LOOKUP) {
2158 if (rule->lookup >= 256)
2159 nla_put_u32(msg, FRA_TABLE, rule->lookup);
2162 if (rule->flags & IPRULE_SUP_PREFIXLEN)
2163 nla_put_u32(msg, FRA_SUPPRESS_PREFIXLEN, rule->sup_prefixlen);
2165 if (rule->flags & IPRULE_GOTO)
2166 nla_put_u32(msg, FRA_GOTO, rule->gotoid);
2168 return system_rtnl_call(msg);
2171 int system_add_iprule(struct iprule *rule)
2173 return system_iprule(rule, RTM_NEWRULE);
2176 int system_del_iprule(struct iprule *rule)
2178 return system_iprule(rule, RTM_DELRULE);
2181 int system_flush_iprules(void)
2186 system_if_clear_entries(NULL, RTM_GETRULE, AF_INET);
2187 system_if_clear_entries(NULL, RTM_GETRULE, AF_INET6);
2189 memset(&rule, 0, sizeof(rule));
2192 rule.flags = IPRULE_INET4 | IPRULE_PRIORITY | IPRULE_LOOKUP;
2195 rule.lookup = RT_TABLE_LOCAL;
2196 rv |= system_iprule(&rule, RTM_NEWRULE);
2198 rule.priority = 32766;
2199 rule.lookup = RT_TABLE_MAIN;
2200 rv |= system_iprule(&rule, RTM_NEWRULE);
2202 rule.priority = 32767;
2203 rule.lookup = RT_TABLE_DEFAULT;
2204 rv |= system_iprule(&rule, RTM_NEWRULE);
2207 rule.flags = IPRULE_INET6 | IPRULE_PRIORITY | IPRULE_LOOKUP;
2210 rule.lookup = RT_TABLE_LOCAL;
2211 rv |= system_iprule(&rule, RTM_NEWRULE);
2213 rule.priority = 32766;
2214 rule.lookup = RT_TABLE_MAIN;
2215 rv |= system_iprule(&rule, RTM_NEWRULE);
2220 bool system_resolve_iprule_action(const char *action, unsigned int *id)
2222 return system_rtn_aton(action, id);
2225 time_t system_get_rtime(void)
2230 if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, &ts) == 0)
2233 if (gettimeofday(&tv, NULL) == 0)
2240 #define IP_DF 0x4000
2243 static int tunnel_ioctl(const char *name, int cmd, void *p)
2247 memset(&ifr, 0, sizeof(ifr));
2248 strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
2249 ifr.ifr_ifru.ifru_data = p;
2250 return ioctl(sock_ioctl, cmd, &ifr);
2253 #ifdef IFLA_IPTUN_MAX
2254 static int system_add_ip6_tunnel(const char *name, const unsigned int link,
2255 struct blob_attr **tb)
2257 struct nl_msg *nlm = nlmsg_alloc_simple(RTM_NEWLINK,
2258 NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
2259 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC };
2260 struct blob_attr *cur;
2261 int ret = 0, ttl = 0;
2266 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
2267 nla_put_string(nlm, IFLA_IFNAME, name);
2270 nla_put_u32(nlm, IFLA_LINK, link);
2272 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
2278 nla_put_string(nlm, IFLA_INFO_KIND, "ip6tnl");
2279 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
2286 nla_put_u32(nlm, IFLA_IPTUN_LINK, link);
2288 if ((cur = tb[TUNNEL_ATTR_TTL]))
2289 ttl = blobmsg_get_u32(cur);
2291 nla_put_u8(nlm, IFLA_IPTUN_PROTO, IPPROTO_IPIP);
2292 nla_put_u8(nlm, IFLA_IPTUN_TTL, (ttl) ? ttl : 64);
2293 nla_put_u8(nlm, IFLA_IPTUN_ENCAP_LIMIT, 4);
2295 struct in6_addr in6buf;
2296 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2297 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2301 nla_put(nlm, IFLA_IPTUN_LOCAL, sizeof(in6buf), &in6buf);
2304 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2305 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2309 nla_put(nlm, IFLA_IPTUN_REMOTE, sizeof(in6buf), &in6buf);
2312 #ifdef IFLA_IPTUN_FMR_MAX
2313 if ((cur = tb[TUNNEL_ATTR_DATA])) {
2314 struct nlattr *fmrs = nla_nest_start(nlm, IFLA_IPTUN_FMRS);
2315 struct blob_attr *dcur;
2316 unsigned drem, fmrcnt = 0;
2318 blobmsg_for_each_attr(dcur, cur, drem) {
2319 if (blobmsg_type(dcur) != BLOBMSG_TYPE_ARRAY ||
2320 strcmp(blobmsg_name(dcur), "fmrs") ||
2321 blobmsg_check_array(dcur, BLOBMSG_TYPE_UNSPEC) <= 0)
2324 struct blob_attr *rcur;
2326 blobmsg_for_each_attr(rcur, dcur, rrem) {
2327 struct blob_attr *tb_fmr[__FMR_DATA_ATTR_MAX], *tb_cur;
2328 struct in6_addr ip6prefix;
2329 struct in_addr ip4prefix;
2330 unsigned ip4len, ip6len, ealen, offset;
2332 blobmsg_parse(fmr_data_attr_list.params, __FMR_DATA_ATTR_MAX, tb_fmr,
2333 blobmsg_data(rcur), blobmsg_len(rcur));
2335 if (!(tb_cur = tb_fmr[FMR_DATA_PREFIX6]) ||
2336 !parse_ip_and_netmask(AF_INET6,
2337 blobmsg_data(tb_cur), &ip6prefix,
2343 if (!(tb_cur = tb_fmr[FMR_DATA_PREFIX4]) ||
2344 !parse_ip_and_netmask(AF_INET,
2345 blobmsg_data(tb_cur), &ip4prefix,
2351 if (!(tb_cur = tb_fmr[FMR_DATA_EALEN])) {
2355 ealen = blobmsg_get_u32(tb_cur);
2357 if (!(tb_cur = tb_fmr[FMR_DATA_OFFSET])) {
2361 offset = blobmsg_get_u32(tb_cur);
2363 struct nlattr *rule = nla_nest_start(nlm, ++fmrcnt);
2365 nla_put(nlm, IFLA_IPTUN_FMR_IP6_PREFIX, sizeof(ip6prefix), &ip6prefix);
2366 nla_put(nlm, IFLA_IPTUN_FMR_IP4_PREFIX, sizeof(ip4prefix), &ip4prefix);
2367 nla_put_u8(nlm, IFLA_IPTUN_FMR_IP6_PREFIX_LEN, ip6len);
2368 nla_put_u8(nlm, IFLA_IPTUN_FMR_IP4_PREFIX_LEN, ip4len);
2369 nla_put_u8(nlm, IFLA_IPTUN_FMR_EA_LEN, ealen);
2370 nla_put_u8(nlm, IFLA_IPTUN_FMR_OFFSET, offset);
2372 nla_nest_end(nlm, rule);
2375 nla_nest_end(nlm, fmrs);
2379 nla_nest_end(nlm, infodata);
2380 nla_nest_end(nlm, linkinfo);
2382 return system_rtnl_call(nlm);
2390 #ifdef IFLA_IPTUN_MAX
2391 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
2392 static int system_add_gre_tunnel(const char *name, const char *kind,
2393 const unsigned int link, struct blob_attr **tb, bool v6)
2396 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
2397 struct blob_attr *cur;
2398 uint32_t ikey = 0, okey = 0, flags = 0, flowinfo = 0;
2399 uint16_t iflags = 0, oflags = 0;
2401 int ret = 0, ttl = 0;
2403 nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
2407 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
2408 nla_put_string(nlm, IFLA_IFNAME, name);
2410 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
2416 nla_put_string(nlm, IFLA_INFO_KIND, kind);
2417 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
2424 nla_put_u32(nlm, IFLA_GRE_LINK, link);
2426 if ((cur = tb[TUNNEL_ATTR_TTL]))
2427 ttl = blobmsg_get_u32(cur);
2429 if ((cur = tb[TUNNEL_ATTR_TOS])) {
2430 char *str = blobmsg_get_string(cur);
2431 if (strcmp(str, "inherit")) {
2434 if (!system_tos_aton(str, &uval)) {
2440 flowinfo |= htonl(uval << 20) & IP6_FLOWINFO_TCLASS;
2445 flags |= IP6_TNL_F_USE_ORIG_TCLASS;
2451 if ((cur = tb[TUNNEL_ATTR_DATA])) {
2452 struct blob_attr *tb_data[__GRE_DATA_ATTR_MAX];
2454 blobmsg_parse(gre_data_attr_list.params, __GRE_DATA_ATTR_MAX, tb_data,
2455 blobmsg_data(cur), blobmsg_len(cur));
2457 if ((cur = tb_data[GRE_DATA_IKEY])) {
2458 if ((ikey = blobmsg_get_u32(cur)))
2462 if ((cur = tb_data[GRE_DATA_OKEY])) {
2463 if ((okey = blobmsg_get_u32(cur)))
2467 if ((cur = tb_data[GRE_DATA_ICSUM])) {
2468 if (blobmsg_get_bool(cur))
2472 if ((cur = tb_data[GRE_DATA_OCSUM])) {
2473 if (blobmsg_get_bool(cur))
2477 if ((cur = tb_data[GRE_DATA_ISEQNO])) {
2478 if (blobmsg_get_bool(cur))
2482 if ((cur = tb[GRE_DATA_OSEQNO])) {
2483 if (blobmsg_get_bool(cur))
2489 struct in6_addr in6buf;
2490 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2491 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2495 nla_put(nlm, IFLA_GRE_LOCAL, sizeof(in6buf), &in6buf);
2498 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2499 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2503 nla_put(nlm, IFLA_GRE_REMOTE, sizeof(in6buf), &in6buf);
2505 nla_put_u8(nlm, IFLA_GRE_ENCAP_LIMIT, 4);
2508 nla_put_u32(nlm, IFLA_GRE_FLOWINFO, flowinfo);
2511 nla_put_u32(nlm, IFLA_GRE_FLAGS, flags);
2516 struct in_addr inbuf;
2519 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2520 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2524 nla_put(nlm, IFLA_GRE_LOCAL, sizeof(inbuf), &inbuf);
2527 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2528 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2532 nla_put(nlm, IFLA_GRE_REMOTE, sizeof(inbuf), &inbuf);
2534 if (IN_MULTICAST(ntohl(inbuf.s_addr))) {
2536 okey = inbuf.s_addr;
2541 ikey = inbuf.s_addr;
2547 if ((cur = tb[TUNNEL_ATTR_DF]))
2548 set_df = blobmsg_get_bool(cur);
2551 /* ttl != 0 and nopmtudisc are incompatible */
2559 nla_put_u8(nlm, IFLA_GRE_PMTUDISC, set_df ? 1 : 0);
2561 nla_put_u8(nlm, IFLA_GRE_TOS, tos);
2565 nla_put_u8(nlm, IFLA_GRE_TTL, ttl);
2568 nla_put_u16(nlm, IFLA_GRE_OFLAGS, oflags);
2571 nla_put_u16(nlm, IFLA_GRE_IFLAGS, iflags);
2574 nla_put_u32(nlm, IFLA_GRE_OKEY, htonl(okey));
2577 nla_put_u32(nlm, IFLA_GRE_IKEY, htonl(ikey));
2579 nla_nest_end(nlm, infodata);
2580 nla_nest_end(nlm, linkinfo);
2582 return system_rtnl_call(nlm);
2591 static int system_add_vti_tunnel(const char *name, const char *kind,
2592 const unsigned int link, struct blob_attr **tb, bool v6)
2595 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
2596 struct blob_attr *cur;
2599 nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
2603 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
2604 nla_put_string(nlm, IFLA_IFNAME, name);
2606 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
2612 nla_put_string(nlm, IFLA_INFO_KIND, kind);
2613 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
2620 nla_put_u32(nlm, IFLA_VTI_LINK, link);
2623 struct in6_addr in6buf;
2624 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2625 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2629 nla_put(nlm, IFLA_VTI_LOCAL, sizeof(in6buf), &in6buf);
2632 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2633 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2637 nla_put(nlm, IFLA_VTI_REMOTE, sizeof(in6buf), &in6buf);
2641 struct in_addr inbuf;
2643 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2644 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2648 nla_put(nlm, IFLA_VTI_LOCAL, sizeof(inbuf), &inbuf);
2651 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2652 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2656 nla_put(nlm, IFLA_VTI_REMOTE, sizeof(inbuf), &inbuf);
2661 if ((cur = tb[TUNNEL_ATTR_DATA])) {
2662 struct blob_attr *tb_data[__VTI_DATA_ATTR_MAX];
2663 uint32_t ikey = 0, okey = 0;
2665 blobmsg_parse(vti_data_attr_list.params, __VTI_DATA_ATTR_MAX, tb_data,
2666 blobmsg_data(cur), blobmsg_len(cur));
2668 if ((cur = tb_data[VTI_DATA_IKEY])) {
2669 if ((ikey = blobmsg_get_u32(cur)))
2670 nla_put_u32(nlm, IFLA_VTI_IKEY, htonl(ikey));
2673 if ((cur = tb_data[VTI_DATA_OKEY])) {
2674 if ((okey = blobmsg_get_u32(cur)))
2675 nla_put_u32(nlm, IFLA_VTI_OKEY, htonl(okey));
2679 nla_nest_end(nlm, infodata);
2680 nla_nest_end(nlm, linkinfo);
2682 return system_rtnl_call(nlm);
2690 #ifdef IFLA_VXLAN_MAX
2691 static int system_add_vxlan(const char *name, const unsigned int link, struct blob_attr **tb, bool v6)
2693 struct blob_attr *tb_data[__VXLAN_DATA_ATTR_MAX];
2695 struct nlattr *linkinfo, *data;
2696 struct ifinfomsg iim = { .ifi_family = AF_UNSPEC, };
2697 struct blob_attr *cur;
2700 if ((cur = tb[TUNNEL_ATTR_DATA]))
2701 blobmsg_parse(vxlan_data_attr_list.params, __VXLAN_DATA_ATTR_MAX, tb_data,
2702 blobmsg_data(cur), blobmsg_len(cur));
2706 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
2711 nlmsg_append(msg, &iim, sizeof(iim), 0);
2713 nla_put_string(msg, IFLA_IFNAME, name);
2715 if ((cur = tb_data[VXLAN_DATA_ATTR_MACADDR])) {
2716 struct ether_addr *ea = ether_aton(blobmsg_get_string(cur));
2722 nla_put(msg, IFLA_ADDRESS, ETH_ALEN, ea);
2725 if ((cur = tb[TUNNEL_ATTR_MTU])) {
2726 uint32_t mtu = blobmsg_get_u32(cur);
2727 nla_put_u32(msg, IFLA_MTU, mtu);
2730 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO))) {
2735 nla_put_string(msg, IFLA_INFO_KIND, "vxlan");
2737 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) {
2743 nla_put_u32(msg, IFLA_VXLAN_LINK, link);
2745 if ((cur = tb_data[VXLAN_DATA_ATTR_ID])) {
2746 uint32_t id = blobmsg_get_u32(cur);
2747 if (id >= (1u << 24) - 1) {
2752 nla_put_u32(msg, IFLA_VXLAN_ID, id);
2756 struct in6_addr in6buf;
2757 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2758 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2762 nla_put(msg, IFLA_VXLAN_LOCAL6, sizeof(in6buf), &in6buf);
2765 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2766 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2770 nla_put(msg, IFLA_VXLAN_GROUP6, sizeof(in6buf), &in6buf);
2773 struct in_addr inbuf;
2775 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2776 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2780 nla_put(msg, IFLA_VXLAN_LOCAL, sizeof(inbuf), &inbuf);
2783 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2784 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2788 nla_put(msg, IFLA_VXLAN_GROUP, sizeof(inbuf), &inbuf);
2792 uint32_t port = 4789;
2793 if ((cur = tb_data[VXLAN_DATA_ATTR_PORT])) {
2794 port = blobmsg_get_u32(cur);
2795 if (port < 1 || port > 65535) {
2800 nla_put_u16(msg, IFLA_VXLAN_PORT, htons(port));
2802 if ((cur = tb_data[VXLAN_DATA_ATTR_RXCSUM])) {
2803 bool rxcsum = blobmsg_get_bool(cur);
2804 nla_put_u8(msg, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, !rxcsum);
2807 if ((cur = tb_data[VXLAN_DATA_ATTR_TXCSUM])) {
2808 bool txcsum = blobmsg_get_bool(cur);
2809 nla_put_u8(msg, IFLA_VXLAN_UDP_CSUM, txcsum);
2810 nla_put_u8(msg, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, !txcsum);
2813 if ((cur = tb[TUNNEL_ATTR_TOS])) {
2814 char *str = blobmsg_get_string(cur);
2817 if (strcmp(str, "inherit")) {
2818 if (!system_tos_aton(str, &tos))
2822 nla_put_u8(msg, IFLA_VXLAN_TOS, tos);
2825 if ((cur = tb[TUNNEL_ATTR_TTL])) {
2826 uint32_t ttl = blobmsg_get_u32(cur);
2827 if (ttl < 1 || ttl > 255) {
2832 nla_put_u8(msg, IFLA_VXLAN_TTL, ttl);
2835 nla_nest_end(msg, data);
2836 nla_nest_end(msg, linkinfo);
2838 ret = system_rtnl_call(msg);
2840 D(SYSTEM, "Error adding vxlan '%s': %d\n", name, ret);
2850 static int system_add_sit_tunnel(const char *name, const unsigned int link, struct blob_attr **tb)
2852 struct blob_attr *cur;
2855 if (system_add_proto_tunnel(name, IPPROTO_IPV6, link, tb) < 0)
2859 if ((cur = tb[TUNNEL_ATTR_DATA])) {
2860 struct blob_attr *tb_data[__SIXRD_DATA_ATTR_MAX];
2862 struct ip_tunnel_6rd p6;
2864 blobmsg_parse(sixrd_data_attr_list.params, __SIXRD_DATA_ATTR_MAX, tb_data,
2865 blobmsg_data(cur), blobmsg_len(cur));
2867 memset(&p6, 0, sizeof(p6));
2869 if ((cur = tb_data[SIXRD_DATA_PREFIX])) {
2870 if (!parse_ip_and_netmask(AF_INET6, blobmsg_data(cur),
2871 &p6.prefix, &mask) || mask > 128) {
2876 p6.prefixlen = mask;
2879 if ((cur = tb_data[SIXRD_DATA_RELAY_PREFIX])) {
2880 if (!parse_ip_and_netmask(AF_INET, blobmsg_data(cur),
2881 &p6.relay_prefix, &mask) || mask > 32) {
2886 p6.relay_prefixlen = mask;
2889 if (tunnel_ioctl(name, SIOCADD6RD, &p6) < 0) {
2899 __system_del_ip_tunnel(name, tb);
2903 static int system_add_proto_tunnel(const char *name, const uint8_t proto, const unsigned int link, struct blob_attr **tb)
2905 struct blob_attr *cur;
2907 struct ip_tunnel_parm p = {
2916 if ((cur = tb[TUNNEL_ATTR_LOCAL]) &&
2917 inet_pton(AF_INET, blobmsg_data(cur), &p.iph.saddr) < 1)
2920 if ((cur = tb[TUNNEL_ATTR_REMOTE]) &&
2921 inet_pton(AF_INET, blobmsg_data(cur), &p.iph.daddr) < 1)
2924 if ((cur = tb[TUNNEL_ATTR_DF]))
2925 set_df = blobmsg_get_bool(cur);
2927 if ((cur = tb[TUNNEL_ATTR_TTL]))
2928 p.iph.ttl = blobmsg_get_u32(cur);
2930 if ((cur = tb[TUNNEL_ATTR_TOS])) {
2931 char *str = blobmsg_get_string(cur);
2932 if (strcmp(str, "inherit")) {
2935 if (!system_tos_aton(str, &uval))
2943 p.iph.frag_off = set_df ? htons(IP_DF) : 0;
2944 /* ttl !=0 and nopmtudisc are incompatible */
2945 if (p.iph.ttl && p.iph.frag_off == 0)
2948 strncpy(p.name, name, sizeof(p.name));
2950 switch (p.iph.protocol) {
2952 return tunnel_ioctl("tunl0", SIOCADDTUNNEL, &p);
2954 return tunnel_ioctl("sit0", SIOCADDTUNNEL, &p);
2961 static int __system_del_ip_tunnel(const char *name, struct blob_attr **tb)
2963 struct blob_attr *cur;
2966 if (!(cur = tb[TUNNEL_ATTR_TYPE]))
2968 str = blobmsg_data(cur);
2970 if (!strcmp(str, "greip") || !strcmp(str, "gretapip") ||
2971 !strcmp(str, "greip6") || !strcmp(str, "gretapip6") ||
2972 !strcmp(str, "vtiip") || !strcmp(str, "vtiip6") ||
2973 !strcmp(str, "vxlan") || !strcmp(str, "vxlan6"))
2974 return system_link_del(name);
2976 return tunnel_ioctl(name, SIOCDELTUNNEL, NULL);
2979 int system_del_ip_tunnel(const char *name, struct blob_attr *attr)
2981 struct blob_attr *tb[__TUNNEL_ATTR_MAX];
2983 blobmsg_parse(tunnel_attr_list.params, __TUNNEL_ATTR_MAX, tb,
2984 blob_data(attr), blob_len(attr));
2986 return __system_del_ip_tunnel(name, tb);
2989 int system_update_ipv6_mtu(struct device *dev, int mtu)
2995 snprintf(buf, sizeof(buf), "/proc/sys/net/ipv6/conf/%s/mtu",
2998 fd = open(buf, O_RDWR);
3003 ssize_t len = read(fd, buf, sizeof(buf) - 1);
3010 if (write(fd, buf, snprintf(buf, sizeof(buf), "%i", mtu)) > 0)
3019 int system_add_ip_tunnel(const char *name, struct blob_attr *attr)
3021 struct blob_attr *tb[__TUNNEL_ATTR_MAX];
3022 struct blob_attr *cur;
3025 blobmsg_parse(tunnel_attr_list.params, __TUNNEL_ATTR_MAX, tb,
3026 blob_data(attr), blob_len(attr));
3028 __system_del_ip_tunnel(name, tb);
3030 if (!(cur = tb[TUNNEL_ATTR_TYPE]))
3032 str = blobmsg_data(cur);
3034 unsigned int ttl = 0;
3035 if ((cur = tb[TUNNEL_ATTR_TTL])) {
3036 ttl = blobmsg_get_u32(cur);
3041 unsigned int link = 0;
3042 if ((cur = tb[TUNNEL_ATTR_LINK])) {
3043 struct interface *iface = vlist_find(&interfaces, blobmsg_data(cur), iface, node);
3047 if (iface->l3_dev.dev)
3048 link = iface->l3_dev.dev->ifindex;
3051 if (!strcmp(str, "sit"))
3052 return system_add_sit_tunnel(name, link, tb);
3053 #ifdef IFLA_IPTUN_MAX
3054 else if (!strcmp(str, "ipip6")) {
3055 return system_add_ip6_tunnel(name, link, tb);
3056 } else if (!strcmp(str, "greip")) {
3057 return system_add_gre_tunnel(name, "gre", link, tb, false);
3058 } else if (!strcmp(str, "gretapip")) {
3059 return system_add_gre_tunnel(name, "gretap", link, tb, false);
3060 } else if (!strcmp(str, "greip6")) {
3061 return system_add_gre_tunnel(name, "ip6gre", link, tb, true);
3062 } else if (!strcmp(str, "gretapip6")) {
3063 return system_add_gre_tunnel(name, "ip6gretap", link, tb, true);
3065 } else if (!strcmp(str, "vtiip")) {
3066 return system_add_vti_tunnel(name, "vti", link, tb, false);
3067 } else if (!strcmp(str, "vtiip6")) {
3068 return system_add_vti_tunnel(name, "vti6", link, tb, true);
3070 #ifdef IFLA_VXLAN_MAX
3071 } else if(!strcmp(str, "vxlan")) {
3072 return system_add_vxlan(name, link, tb, false);
3073 } else if(!strcmp(str, "vxlan6")) {
3074 return system_add_vxlan(name, link, tb, true);
3077 } else if (!strcmp(str, "ipip")) {
3078 return system_add_proto_tunnel(name, IPPROTO_IPIP, link, tb);