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_isolate_mode(struct device *dev, const char *val)
351 system_set_dev_sysctl("/sys/class/net/%s/brport/isolate_mode", dev->ifname, val);
354 static void system_bridge_set_multicast_router(struct device *dev, const char *val, bool bridge)
356 system_set_dev_sysctl(bridge ? "/sys/class/net/%s/bridge/multicast_router" :
357 "/sys/class/net/%s/brport/multicast_router",
361 static void system_bridge_set_robustness(struct device *dev, const char *val)
363 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_count",
365 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_count",
369 static void system_bridge_set_query_interval(struct device *dev, const char *val)
371 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_interval",
375 static void system_bridge_set_query_response_interval(struct device *dev, const char *val)
377 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_response_interval",
381 static void system_bridge_set_last_member_interval(struct device *dev, const char *val)
383 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_interval",
387 static void system_bridge_set_membership_interval(struct device *dev, const char *val)
389 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_membership_interval",
393 static void system_bridge_set_other_querier_timeout(struct device *dev, const char *val)
395 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier_interval",
399 static void system_bridge_set_startup_query_interval(struct device *dev, const char *val)
401 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_interval",
405 static void system_bridge_set_learning(struct device *dev, const char *val)
407 system_set_dev_sysctl("/sys/class/net/%s/brport/learning", dev->ifname, val);
410 static void system_bridge_set_unicast_flood(struct device *dev, const char *val)
412 system_set_dev_sysctl("/sys/class/net/%s/brport/unicast_flood", dev->ifname, val);
415 static void system_set_sendredirects(struct device *dev, const char *val)
417 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects", dev->ifname, val);
420 static int system_get_sysctl(const char *path, char *buf, const size_t buf_sz)
422 int fd = -1, ret = -1;
424 fd = open(path, O_RDONLY);
428 ssize_t len = read(fd, buf, buf_sz - 1);
442 system_get_dev_sysctl(const char *path, const char *device, char *buf, const size_t buf_sz)
444 snprintf(dev_buf, sizeof(dev_buf), path, device);
445 return system_get_sysctl(dev_buf, buf, buf_sz);
448 static int system_get_disable_ipv6(struct device *dev, char *buf, const size_t buf_sz)
450 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
451 dev->ifname, buf, buf_sz);
454 static int system_get_rpfilter(struct device *dev, char *buf, const size_t buf_sz)
456 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
457 dev->ifname, buf, buf_sz);
460 static int system_get_acceptlocal(struct device *dev, char *buf, const size_t buf_sz)
462 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
463 dev->ifname, buf, buf_sz);
466 static int system_get_igmpversion(struct device *dev, char *buf, const size_t buf_sz)
468 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
469 dev->ifname, buf, buf_sz);
472 static int system_get_mldversion(struct device *dev, char *buf, const size_t buf_sz)
474 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
475 dev->ifname, buf, buf_sz);
478 static int system_get_neigh4reachabletime(struct device *dev, char *buf, const size_t buf_sz)
480 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
481 dev->ifname, buf, buf_sz);
484 static int system_get_neigh6reachabletime(struct device *dev, char *buf, const size_t buf_sz)
486 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
487 dev->ifname, buf, buf_sz);
490 static int system_get_neigh4gcstaletime(struct device *dev, char *buf, const size_t buf_sz)
492 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time",
493 dev->ifname, buf, buf_sz);
496 static int system_get_neigh6gcstaletime(struct device *dev, char *buf, const size_t buf_sz)
498 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time",
499 dev->ifname, buf, buf_sz);
502 static int system_get_neigh4locktime(struct device *dev, char *buf, const size_t buf_sz)
504 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime",
505 dev->ifname, buf, buf_sz);
508 static int system_get_dadtransmits(struct device *dev, char *buf, const size_t buf_sz)
510 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
511 dev->ifname, buf, buf_sz);
514 static int system_get_sendredirects(struct device *dev, char *buf, const size_t buf_sz)
516 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects",
517 dev->ifname, buf, buf_sz);
520 // Evaluate netlink messages
521 static int cb_rtnl_event(struct nl_msg *msg, void *arg)
523 struct nlmsghdr *nh = nlmsg_hdr(msg);
524 struct nlattr *nla[__IFLA_MAX];
528 if (nh->nlmsg_type != RTM_NEWLINK)
531 nlmsg_parse(nh, sizeof(struct ifinfomsg), nla, __IFLA_MAX - 1, NULL);
532 if (!nla[IFLA_IFNAME])
535 struct device *dev = device_find(nla_data(nla[IFLA_IFNAME]));
539 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev->ifname, buf, sizeof(buf)))
540 link_state = strtoul(buf, NULL, 0);
542 device_set_link(dev, link_state ? true : false);
549 handle_hotplug_msg(char *data, int size)
551 const char *subsystem = NULL, *interface = NULL, *interface_old = NULL;
552 char *cur, *end, *sep;
555 bool add, move = false;
557 if (!strncmp(data, "add@", 4))
559 else if (!strncmp(data, "remove@", 7))
561 else if (!strncmp(data, "move@", 5)) {
568 skip = strlen(data) + 1;
571 for (cur = data + skip; cur < end; cur += skip) {
572 skip = strlen(cur) + 1;
574 sep = strchr(cur, '=');
579 if (!strcmp(cur, "INTERFACE"))
581 else if (!strcmp(cur, "SUBSYSTEM")) {
583 if (strcmp(subsystem, "net") != 0)
585 } else if (!strcmp(cur, "DEVPATH_OLD")) {
586 interface_old = strrchr(sep + 1, '/');
592 if (subsystem && interface) {
593 if (move && interface_old)
602 dev = device_find(interface_old);
606 if (dev->type != &simple_device_type)
609 device_set_present(dev, false);
612 dev = device_find(interface);
616 if (dev->type != &simple_device_type)
619 if (add && system_if_force_external(dev->ifname))
622 device_set_present(dev, add);
626 handle_hotplug_event(struct uloop_fd *u, unsigned int events)
628 struct event_socket *ev = container_of(u, struct event_socket, uloop);
629 struct sockaddr_nl nla;
630 unsigned char *buf = NULL;
633 while ((size = nl_recv(ev->sock, &nla, &buf, NULL)) > 0) {
635 handle_hotplug_msg((char *) buf, size);
641 static int system_rtnl_call(struct nl_msg *msg)
645 ret = nl_send_auto_complete(sock_rtnl, msg);
651 return nl_wait_for_ack(sock_rtnl);
654 int system_bridge_delbr(struct device *bridge)
656 return ioctl(sock_ioctl, SIOCBRDELBR, bridge->ifname);
659 static int system_bridge_if(const char *bridge, struct device *dev, int cmd, void *data)
663 memset(&ifr, 0, sizeof(ifr));
665 ifr.ifr_ifindex = dev->ifindex;
668 strncpy(ifr.ifr_name, bridge, sizeof(ifr.ifr_name));
669 return ioctl(sock_ioctl, cmd, &ifr);
672 static bool system_is_bridge(const char *name, char *buf, int buflen)
676 snprintf(buf, buflen, "/sys/devices/virtual/net/%s/bridge", name);
677 if (stat(buf, &st) < 0)
683 static char *system_get_bridge(const char *name, char *buf, int buflen)
689 snprintf(buf, buflen, "/sys/devices/virtual/net/*/brif/%s/bridge", name);
690 if (glob(buf, GLOB_NOSORT, NULL, &gl) < 0)
694 len = readlink(gl.gl_pathv[0], buf, buflen);
702 path = strrchr(buf, '/');
710 system_bridge_set_wireless(struct device *bridge, struct device *dev)
712 bool mcast_to_ucast = dev->wireless_ap;
715 if (bridge->settings.flags & DEV_OPT_MULTICAST_TO_UNICAST &&
716 !bridge->settings.multicast_to_unicast)
717 mcast_to_ucast = false;
719 if (!mcast_to_ucast || dev->wireless_isolate)
722 system_bridge_set_multicast_to_unicast(dev, mcast_to_ucast ? "1" : "0");
723 system_bridge_set_hairpin_mode(dev, hairpin ? "1" : "0");
726 int system_bridge_addif(struct device *bridge, struct device *dev)
732 oldbr = system_get_bridge(dev->ifname, dev_buf, sizeof(dev_buf));
733 if (!oldbr || strcmp(oldbr, bridge->ifname) != 0)
734 ret = system_bridge_if(bridge->ifname, dev, SIOCBRADDIF, NULL);
737 system_bridge_set_wireless(bridge, dev);
739 if (dev->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
740 snprintf(buf, sizeof(buf), "%u", dev->settings.multicast_router);
741 system_bridge_set_multicast_router(dev, buf, false);
744 if (dev->settings.flags & DEV_OPT_MULTICAST_FAST_LEAVE &&
745 dev->settings.multicast_fast_leave)
746 system_bridge_set_multicast_fast_leave(dev, "1");
748 if (dev->settings.flags & DEV_OPT_LEARNING &&
749 !dev->settings.learning)
750 system_bridge_set_learning(dev, "0");
752 if (dev->settings.flags & DEV_OPT_UNICAST_FLOOD &&
753 !dev->settings.unicast_flood)
754 system_bridge_set_unicast_flood(dev, "0");
756 if (dev->settings.flags & DEV_OPT_ISOLATE &&
757 dev->settings.isolate)
758 system_bridge_set_isolate_mode(dev, "1");
763 int system_bridge_delif(struct device *bridge, struct device *dev)
765 return system_bridge_if(bridge->ifname, dev, SIOCBRDELIF, NULL);
768 int system_if_resolve(struct device *dev)
771 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
772 if (!ioctl(sock_ioctl, SIOCGIFINDEX, &ifr))
773 return ifr.ifr_ifindex;
778 static int system_if_flags(const char *ifname, unsigned add, unsigned rem)
782 memset(&ifr, 0, sizeof(ifr));
783 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
784 ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr);
785 ifr.ifr_flags |= add;
786 ifr.ifr_flags &= ~rem;
787 return ioctl(sock_ioctl, SIOCSIFFLAGS, &ifr);
799 static bool check_ifaddr(struct nlmsghdr *hdr, int ifindex)
801 struct ifaddrmsg *ifa = NLMSG_DATA(hdr);
803 return ifa->ifa_index == ifindex;
806 static bool check_route(struct nlmsghdr *hdr, int ifindex)
808 struct rtmsg *r = NLMSG_DATA(hdr);
809 struct nlattr *tb[__RTA_MAX];
811 if (r->rtm_protocol == RTPROT_KERNEL &&
812 r->rtm_family == AF_INET6)
815 nlmsg_parse(hdr, sizeof(struct rtmsg), tb, __RTA_MAX - 1, NULL);
819 return *(int *)RTA_DATA(tb[RTA_OIF]) == ifindex;
822 static bool check_rule(struct nlmsghdr *hdr, int ifindex)
827 static int cb_clear_event(struct nl_msg *msg, void *arg)
829 struct clear_data *clr = arg;
830 struct nlmsghdr *hdr = nlmsg_hdr(msg);
831 bool (*cb)(struct nlmsghdr *, int ifindex);
837 if (hdr->nlmsg_type != RTM_NEWADDR)
844 if (hdr->nlmsg_type != RTM_NEWROUTE)
851 if (hdr->nlmsg_type != RTM_NEWRULE)
860 if (!cb(hdr, clr->dev ? clr->dev->ifindex : 0))
863 if (type == RTM_DELRULE)
864 D(SYSTEM, "Remove a rule\n");
866 D(SYSTEM, "Remove %s from device %s\n",
867 type == RTM_DELADDR ? "an address" : "a route",
869 memcpy(nlmsg_hdr(clr->msg), hdr, hdr->nlmsg_len);
870 hdr = nlmsg_hdr(clr->msg);
871 hdr->nlmsg_type = type;
872 hdr->nlmsg_flags = NLM_F_REQUEST;
874 nl_socket_disable_auto_ack(sock_rtnl);
875 nl_send_auto_complete(sock_rtnl, clr->msg);
876 nl_socket_enable_auto_ack(sock_rtnl);
882 cb_finish_event(struct nl_msg *msg, void *arg)
890 error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
893 *pending = err->error;
898 system_if_clear_entries(struct device *dev, int type, int af)
900 struct clear_data clr;
901 struct nl_cb *cb = nl_cb_alloc(NL_CB_DEFAULT);
904 .rtm_flags = RTM_F_CLONED,
906 int flags = NLM_F_DUMP;
915 clr.size = sizeof(struct rtgenmsg);
918 clr.size = sizeof(struct rtmsg);
927 clr.msg = nlmsg_alloc_simple(type, flags);
931 nlmsg_append(clr.msg, &rtm, clr.size, 0);
932 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, cb_clear_event, &clr);
933 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, cb_finish_event, &pending);
934 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &pending);
936 nl_send_auto_complete(sock_rtnl, clr.msg);
938 nl_recvmsgs(sock_rtnl, cb);
946 * Clear bridge (membership) state and bring down device
948 void system_if_clear_state(struct device *dev)
950 static char buf[256];
953 device_set_ifindex(dev, system_if_resolve(dev));
954 if (dev->external || !dev->ifindex)
957 system_if_flags(dev->ifname, 0, IFF_UP);
959 if (system_is_bridge(dev->ifname, buf, sizeof(buf))) {
960 D(SYSTEM, "Delete existing bridge named '%s'\n", dev->ifname);
961 system_bridge_delbr(dev);
965 bridge = system_get_bridge(dev->ifname, buf, sizeof(buf));
967 D(SYSTEM, "Remove device '%s' from bridge '%s'\n", dev->ifname, bridge);
968 system_bridge_if(bridge, dev, SIOCBRDELIF, NULL);
971 system_if_clear_entries(dev, RTM_GETROUTE, AF_INET);
972 system_if_clear_entries(dev, RTM_GETADDR, AF_INET);
973 system_if_clear_entries(dev, RTM_GETROUTE, AF_INET6);
974 system_if_clear_entries(dev, RTM_GETADDR, AF_INET6);
975 system_set_disable_ipv6(dev, "0");
978 static inline unsigned long
979 sec_to_jiffies(int val)
981 return (unsigned long) val * 100;
984 static void system_bridge_conf_multicast_deps(struct device *bridge,
985 struct bridge_config *cfg,
991 if (cfg->flags & BRIDGE_OPT_ROBUSTNESS ||
992 cfg->flags & BRIDGE_OPT_QUERY_INTERVAL ||
993 cfg->flags & BRIDGE_OPT_QUERY_RESPONSE_INTERVAL) {
994 val = cfg->robustness * cfg->query_interval +
995 cfg->query_response_interval;
997 snprintf(buf, buf_len, "%i", val);
998 system_bridge_set_membership_interval(bridge, buf);
1000 val = cfg->robustness * cfg->query_interval +
1001 cfg->query_response_interval / 2;
1003 snprintf(buf, buf_len, "%i", val);
1004 system_bridge_set_other_querier_timeout(bridge, buf);
1007 if (cfg->flags & BRIDGE_OPT_QUERY_INTERVAL) {
1008 val = cfg->query_interval / 4;
1010 snprintf(buf, buf_len, "%i", val);
1011 system_bridge_set_startup_query_interval(bridge, buf);
1015 static void system_bridge_conf_multicast(struct device *bridge,
1016 struct bridge_config *cfg,
1020 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
1021 bridge->ifname, cfg->igmp_snoop ? "1" : "0");
1023 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
1024 bridge->ifname, cfg->multicast_querier ? "1" : "0");
1026 snprintf(buf, buf_len, "%i", cfg->hash_max);
1027 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
1028 bridge->ifname, buf);
1030 if (bridge->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
1031 snprintf(buf, buf_len, "%u", bridge->settings.multicast_router);
1032 system_bridge_set_multicast_router(bridge, buf, true);
1035 if (cfg->flags & BRIDGE_OPT_ROBUSTNESS) {
1036 snprintf(buf, buf_len, "%i", cfg->robustness);
1037 system_bridge_set_robustness(bridge, buf);
1040 if (cfg->flags & BRIDGE_OPT_QUERY_INTERVAL) {
1041 snprintf(buf, buf_len, "%i", cfg->query_interval);
1042 system_bridge_set_query_interval(bridge, buf);
1045 if (cfg->flags & BRIDGE_OPT_QUERY_RESPONSE_INTERVAL) {
1046 snprintf(buf, buf_len, "%i", cfg->query_response_interval);
1047 system_bridge_set_query_response_interval(bridge, buf);
1050 if (cfg->flags & BRIDGE_OPT_LAST_MEMBER_INTERVAL) {
1051 snprintf(buf, buf_len, "%i", cfg->last_member_interval);
1052 system_bridge_set_last_member_interval(bridge, buf);
1055 system_bridge_conf_multicast_deps(bridge, cfg, buf, buf_len);
1058 int system_bridge_addbr(struct device *bridge, struct bridge_config *cfg)
1061 unsigned long args[4] = {};
1063 if (ioctl(sock_ioctl, SIOCBRADDBR, bridge->ifname) < 0)
1066 args[0] = BRCTL_SET_BRIDGE_STP_STATE;
1067 args[1] = !!cfg->stp;
1068 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1070 args[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY;
1071 args[1] = sec_to_jiffies(cfg->forward_delay);
1072 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1074 system_bridge_conf_multicast(bridge, cfg, buf, sizeof(buf));
1076 args[0] = BRCTL_SET_BRIDGE_PRIORITY;
1077 args[1] = cfg->priority;
1078 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1080 if (cfg->flags & BRIDGE_OPT_AGEING_TIME) {
1081 args[0] = BRCTL_SET_AGEING_TIME;
1082 args[1] = sec_to_jiffies(cfg->ageing_time);
1083 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1086 if (cfg->flags & BRIDGE_OPT_HELLO_TIME) {
1087 args[0] = BRCTL_SET_BRIDGE_HELLO_TIME;
1088 args[1] = sec_to_jiffies(cfg->hello_time);
1089 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1092 if (cfg->flags & BRIDGE_OPT_MAX_AGE) {
1093 args[0] = BRCTL_SET_BRIDGE_MAX_AGE;
1094 args[1] = sec_to_jiffies(cfg->max_age);
1095 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
1101 int system_macvlan_add(struct device *macvlan, struct device *dev, struct macvlan_config *cfg)
1104 struct nlattr *linkinfo, *data;
1105 struct ifinfomsg iim = { .ifi_family = AF_UNSPEC, };
1107 static const struct {
1109 enum macvlan_mode val;
1111 { "private", MACVLAN_MODE_PRIVATE },
1112 { "vepa", MACVLAN_MODE_VEPA },
1113 { "bridge", MACVLAN_MODE_BRIDGE },
1114 { "passthru", MACVLAN_MODE_PASSTHRU },
1117 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
1122 nlmsg_append(msg, &iim, sizeof(iim), 0);
1124 if (cfg->flags & MACVLAN_OPT_MACADDR)
1125 nla_put(msg, IFLA_ADDRESS, sizeof(cfg->macaddr), cfg->macaddr);
1126 nla_put_string(msg, IFLA_IFNAME, macvlan->ifname);
1127 nla_put_u32(msg, IFLA_LINK, dev->ifindex);
1129 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
1130 goto nla_put_failure;
1132 nla_put_string(msg, IFLA_INFO_KIND, "macvlan");
1134 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
1135 goto nla_put_failure;
1138 for (i = 0; i < ARRAY_SIZE(modes); i++) {
1139 if (strcmp(cfg->mode, modes[i].name) != 0)
1142 nla_put_u32(msg, IFLA_MACVLAN_MODE, modes[i].val);
1147 nla_nest_end(msg, data);
1148 nla_nest_end(msg, linkinfo);
1150 rv = system_rtnl_call(msg);
1152 D(SYSTEM, "Error adding macvlan '%s' over '%s': %d\n", macvlan->ifname, dev->ifname, rv);
1161 static int system_link_del(const char *ifname)
1164 struct ifinfomsg iim = {
1165 .ifi_family = AF_UNSPEC,
1169 msg = nlmsg_alloc_simple(RTM_DELLINK, NLM_F_REQUEST);
1174 nlmsg_append(msg, &iim, sizeof(iim), 0);
1175 nla_put_string(msg, IFLA_IFNAME, ifname);
1176 return system_rtnl_call(msg);
1179 int system_macvlan_del(struct device *macvlan)
1181 return system_link_del(macvlan->ifname);
1184 int system_veth_add(struct device *veth, struct veth_config *cfg)
1187 struct ifinfomsg empty_iim = {};
1188 struct nlattr *linkinfo, *data, *veth_info;
1191 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
1196 nlmsg_append(msg, &empty_iim, sizeof(empty_iim), 0);
1198 if (cfg->flags & VETH_OPT_MACADDR)
1199 nla_put(msg, IFLA_ADDRESS, sizeof(cfg->macaddr), cfg->macaddr);
1200 nla_put_string(msg, IFLA_IFNAME, veth->ifname);
1202 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
1203 goto nla_put_failure;
1205 nla_put_string(msg, IFLA_INFO_KIND, "veth");
1207 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
1208 goto nla_put_failure;
1210 if (!(veth_info = nla_nest_start(msg, VETH_INFO_PEER)))
1211 goto nla_put_failure;
1213 nlmsg_append(msg, &empty_iim, sizeof(empty_iim), 0);
1215 if (cfg->flags & VETH_OPT_PEER_NAME)
1216 nla_put_string(msg, IFLA_IFNAME, cfg->peer_name);
1217 if (cfg->flags & VETH_OPT_PEER_MACADDR)
1218 nla_put(msg, IFLA_ADDRESS, sizeof(cfg->peer_macaddr), cfg->peer_macaddr);
1220 nla_nest_end(msg, veth_info);
1221 nla_nest_end(msg, data);
1222 nla_nest_end(msg, linkinfo);
1224 rv = system_rtnl_call(msg);
1226 if (cfg->flags & VETH_OPT_PEER_NAME)
1227 D(SYSTEM, "Error adding veth '%s' with peer '%s': %d\n", veth->ifname, cfg->peer_name, rv);
1229 D(SYSTEM, "Error adding veth '%s': %d\n", veth->ifname, rv);
1239 int system_veth_del(struct device *veth)
1241 return system_link_del(veth->ifname);
1244 static int system_vlan(struct device *dev, int id)
1246 struct vlan_ioctl_args ifr = {
1247 .cmd = SET_VLAN_NAME_TYPE_CMD,
1248 .u.name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD,
1251 ioctl(sock_ioctl, SIOCSIFVLAN, &ifr);
1254 ifr.cmd = DEL_VLAN_CMD;
1257 ifr.cmd = ADD_VLAN_CMD;
1260 strncpy(ifr.device1, dev->ifname, sizeof(ifr.device1));
1261 return ioctl(sock_ioctl, SIOCSIFVLAN, &ifr);
1264 int system_vlan_add(struct device *dev, int id)
1266 return system_vlan(dev, id);
1269 int system_vlan_del(struct device *dev)
1271 return system_vlan(dev, -1);
1274 int system_vlandev_add(struct device *vlandev, struct device *dev, struct vlandev_config *cfg)
1277 struct nlattr *linkinfo, *data;
1278 struct ifinfomsg iim = { .ifi_family = AF_UNSPEC };
1281 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
1286 nlmsg_append(msg, &iim, sizeof(iim), 0);
1287 nla_put_string(msg, IFLA_IFNAME, vlandev->ifname);
1288 nla_put_u32(msg, IFLA_LINK, dev->ifindex);
1290 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
1291 goto nla_put_failure;
1293 nla_put_string(msg, IFLA_INFO_KIND, "vlan");
1295 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
1296 goto nla_put_failure;
1298 nla_put_u16(msg, IFLA_VLAN_ID, cfg->vid);
1300 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1301 nla_put_u16(msg, IFLA_VLAN_PROTOCOL, htons(cfg->proto));
1303 if(cfg->proto == VLAN_PROTO_8021AD)
1304 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);
1307 nla_nest_end(msg, data);
1308 nla_nest_end(msg, linkinfo);
1310 rv = system_rtnl_call(msg);
1312 D(SYSTEM, "Error adding vlandev '%s' over '%s': %d\n", vlandev->ifname, dev->ifname, rv);
1321 int system_vlandev_del(struct device *vlandev)
1323 return system_link_del(vlandev->ifname);
1327 system_if_get_settings(struct device *dev, struct device_settings *s)
1332 memset(&ifr, 0, sizeof(ifr));
1333 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
1335 if (ioctl(sock_ioctl, SIOCGIFMTU, &ifr) == 0) {
1336 s->mtu = ifr.ifr_mtu;
1337 s->flags |= DEV_OPT_MTU;
1340 s->mtu6 = system_update_ipv6_mtu(dev, 0);
1342 s->flags |= DEV_OPT_MTU6;
1344 if (ioctl(sock_ioctl, SIOCGIFTXQLEN, &ifr) == 0) {
1345 s->txqueuelen = ifr.ifr_qlen;
1346 s->flags |= DEV_OPT_TXQUEUELEN;
1349 if (ioctl(sock_ioctl, SIOCGIFHWADDR, &ifr) == 0) {
1350 memcpy(s->macaddr, &ifr.ifr_hwaddr.sa_data, sizeof(s->macaddr));
1351 s->flags |= DEV_OPT_MACADDR;
1354 if (!system_get_disable_ipv6(dev, buf, sizeof(buf))) {
1355 s->ipv6 = !strtoul(buf, NULL, 0);
1356 s->flags |= DEV_OPT_IPV6;
1359 if (ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr) == 0) {
1360 s->promisc = ifr.ifr_flags & IFF_PROMISC;
1361 s->flags |= DEV_OPT_PROMISC;
1363 s->multicast = ifr.ifr_flags & IFF_MULTICAST;
1364 s->flags |= DEV_OPT_MULTICAST;
1367 if (!system_get_rpfilter(dev, buf, sizeof(buf))) {
1368 s->rpfilter = strtoul(buf, NULL, 0);
1369 s->flags |= DEV_OPT_RPFILTER;
1372 if (!system_get_acceptlocal(dev, buf, sizeof(buf))) {
1373 s->acceptlocal = strtoul(buf, NULL, 0);
1374 s->flags |= DEV_OPT_ACCEPTLOCAL;
1377 if (!system_get_igmpversion(dev, buf, sizeof(buf))) {
1378 s->igmpversion = strtoul(buf, NULL, 0);
1379 s->flags |= DEV_OPT_IGMPVERSION;
1382 if (!system_get_mldversion(dev, buf, sizeof(buf))) {
1383 s->mldversion = strtoul(buf, NULL, 0);
1384 s->flags |= DEV_OPT_MLDVERSION;
1387 if (!system_get_neigh4reachabletime(dev, buf, sizeof(buf))) {
1388 s->neigh4reachabletime = strtoul(buf, NULL, 0);
1389 s->flags |= DEV_OPT_NEIGHREACHABLETIME;
1392 if (!system_get_neigh6reachabletime(dev, buf, sizeof(buf))) {
1393 s->neigh6reachabletime = strtoul(buf, NULL, 0);
1394 s->flags |= DEV_OPT_NEIGHREACHABLETIME;
1397 if (!system_get_neigh4locktime(dev, buf, sizeof(buf))) {
1398 s->neigh4locktime = strtol(buf, NULL, 0);
1399 s->flags |= DEV_OPT_NEIGHLOCKTIME;
1402 if (!system_get_neigh4gcstaletime(dev, buf, sizeof(buf))) {
1403 s->neigh4gcstaletime = strtoul(buf, NULL, 0);
1404 s->flags |= DEV_OPT_NEIGHGCSTALETIME;
1407 if (!system_get_neigh6gcstaletime(dev, buf, sizeof(buf))) {
1408 s->neigh6gcstaletime = strtoul(buf, NULL, 0);
1409 s->flags |= DEV_OPT_NEIGHGCSTALETIME;
1412 if (!system_get_dadtransmits(dev, buf, sizeof(buf))) {
1413 s->dadtransmits = strtoul(buf, NULL, 0);
1414 s->flags |= DEV_OPT_DADTRANSMITS;
1417 if (!system_get_sendredirects(dev, buf, sizeof(buf))) {
1418 s->sendredirects = strtoul(buf, NULL, 0);
1419 s->flags |= DEV_OPT_SENDREDIRECTS;
1424 system_if_apply_settings(struct device *dev, struct device_settings *s, unsigned int apply_mask)
1429 memset(&ifr, 0, sizeof(ifr));
1430 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
1431 if (s->flags & DEV_OPT_MTU & apply_mask) {
1432 ifr.ifr_mtu = s->mtu;
1433 if (ioctl(sock_ioctl, SIOCSIFMTU, &ifr) < 0)
1434 s->flags &= ~DEV_OPT_MTU;
1436 if (s->flags & DEV_OPT_MTU6 & apply_mask) {
1437 system_update_ipv6_mtu(dev, s->mtu6);
1439 if (s->flags & DEV_OPT_TXQUEUELEN & apply_mask) {
1440 ifr.ifr_qlen = s->txqueuelen;
1441 if (ioctl(sock_ioctl, SIOCSIFTXQLEN, &ifr) < 0)
1442 s->flags &= ~DEV_OPT_TXQUEUELEN;
1444 if ((s->flags & DEV_OPT_MACADDR & apply_mask) && !dev->external) {
1445 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
1446 memcpy(&ifr.ifr_hwaddr.sa_data, s->macaddr, sizeof(s->macaddr));
1447 if (ioctl(sock_ioctl, SIOCSIFHWADDR, &ifr) < 0)
1448 s->flags &= ~DEV_OPT_MACADDR;
1450 if (s->flags & DEV_OPT_IPV6 & apply_mask)
1451 system_set_disable_ipv6(dev, s->ipv6 ? "0" : "1");
1452 if (s->flags & DEV_OPT_PROMISC & apply_mask) {
1453 if (system_if_flags(dev->ifname, s->promisc ? IFF_PROMISC : 0,
1454 !s->promisc ? IFF_PROMISC : 0) < 0)
1455 s->flags &= ~DEV_OPT_PROMISC;
1457 if (s->flags & DEV_OPT_RPFILTER & apply_mask) {
1458 snprintf(buf, sizeof(buf), "%u", s->rpfilter);
1459 system_set_rpfilter(dev, buf);
1461 if (s->flags & DEV_OPT_ACCEPTLOCAL & apply_mask)
1462 system_set_acceptlocal(dev, s->acceptlocal ? "1" : "0");
1463 if (s->flags & DEV_OPT_IGMPVERSION & apply_mask) {
1464 snprintf(buf, sizeof(buf), "%u", s->igmpversion);
1465 system_set_igmpversion(dev, buf);
1467 if (s->flags & DEV_OPT_MLDVERSION & apply_mask) {
1468 snprintf(buf, sizeof(buf), "%u", s->mldversion);
1469 system_set_mldversion(dev, buf);
1471 if (s->flags & DEV_OPT_NEIGHREACHABLETIME & apply_mask) {
1472 snprintf(buf, sizeof(buf), "%u", s->neigh4reachabletime);
1473 system_set_neigh4reachabletime(dev, buf);
1474 snprintf(buf, sizeof(buf), "%u", s->neigh6reachabletime);
1475 system_set_neigh6reachabletime(dev, buf);
1477 if (s->flags & DEV_OPT_NEIGHLOCKTIME & apply_mask) {
1478 snprintf(buf, sizeof(buf), "%d", s->neigh4locktime);
1479 system_set_neigh4locktime(dev, buf);
1481 if (s->flags & DEV_OPT_NEIGHGCSTALETIME & apply_mask) {
1482 snprintf(buf, sizeof(buf), "%u", s->neigh4gcstaletime);
1483 system_set_neigh4gcstaletime(dev, buf);
1484 snprintf(buf, sizeof(buf), "%u", s->neigh6gcstaletime);
1485 system_set_neigh6gcstaletime(dev, buf);
1487 if (s->flags & DEV_OPT_DADTRANSMITS & apply_mask) {
1488 snprintf(buf, sizeof(buf), "%u", s->dadtransmits);
1489 system_set_dadtransmits(dev, buf);
1491 if (s->flags & DEV_OPT_MULTICAST & apply_mask) {
1492 if (system_if_flags(dev->ifname, s->multicast ? IFF_MULTICAST : 0,
1493 !s->multicast ? IFF_MULTICAST : 0) < 0)
1494 s->flags &= ~DEV_OPT_MULTICAST;
1496 if (s->flags & DEV_OPT_SENDREDIRECTS & apply_mask)
1497 system_set_sendredirects(dev, s->sendredirects ? "1" : "0");
1500 int system_if_up(struct device *dev)
1502 system_if_get_settings(dev, &dev->orig_settings);
1503 /* Only keep orig settings based on what needs to be set */
1504 dev->orig_settings.valid_flags = dev->orig_settings.flags;
1505 dev->orig_settings.flags &= dev->settings.flags;
1506 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
1507 return system_if_flags(dev->ifname, IFF_UP, 0);
1510 int system_if_down(struct device *dev)
1512 int ret = system_if_flags(dev->ifname, 0, IFF_UP);
1513 system_if_apply_settings(dev, &dev->orig_settings, dev->orig_settings.flags);
1517 struct if_check_data {
1523 #ifndef IFF_LOWER_UP
1524 #define IFF_LOWER_UP 0x10000
1527 static int cb_if_check_valid(struct nl_msg *msg, void *arg)
1529 struct nlmsghdr *nh = nlmsg_hdr(msg);
1530 struct ifinfomsg *ifi = NLMSG_DATA(nh);
1531 struct if_check_data *chk = (struct if_check_data *)arg;
1533 if (nh->nlmsg_type != RTM_NEWLINK)
1536 device_set_present(chk->dev, ifi->ifi_index > 0 ? true : false);
1537 device_set_link(chk->dev, ifi->ifi_flags & IFF_LOWER_UP ? true : false);
1542 static int cb_if_check_ack(struct nl_msg *msg, void *arg)
1544 struct if_check_data *chk = (struct if_check_data *)arg;
1549 static int cb_if_check_error(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
1551 struct if_check_data *chk = (struct if_check_data *)arg;
1553 device_set_present(chk->dev, false);
1554 device_set_link(chk->dev, false);
1555 chk->pending = err->error;
1560 int system_if_check(struct device *dev)
1562 struct nl_cb *cb = nl_cb_alloc(NL_CB_DEFAULT);
1564 struct ifinfomsg ifi = {
1565 .ifi_family = AF_UNSPEC,
1568 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;
1717 memset(&ecmd, 0, sizeof(ecmd));
1718 memset(&ifr, 0, sizeof(ifr));
1719 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
1720 ifr.ifr_data = (caddr_t) &ecmd;
1721 ecmd.cmd = ETHTOOL_GSET;
1723 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) == 0) {
1724 c = blobmsg_open_array(b, "link-advertising");
1725 system_add_link_modes(b, ecmd.advertising);
1726 blobmsg_close_array(b, c);
1728 c = blobmsg_open_array(b, "link-supported");
1729 system_add_link_modes(b, ecmd.supported);
1730 blobmsg_close_array(b, c);
1732 s = blobmsg_alloc_string_buffer(b, "speed", 8);
1733 snprintf(s, 8, "%d%c", ethtool_cmd_speed(&ecmd),
1734 ecmd.duplex == DUPLEX_HALF ? 'H' : 'F');
1735 blobmsg_add_string_buffer(b);
1742 system_if_dump_stats(struct device *dev, struct blob_buf *b)
1744 const char *const counters[] = {
1745 "collisions", "rx_frame_errors", "tx_compressed",
1746 "multicast", "rx_length_errors", "tx_dropped",
1747 "rx_bytes", "rx_missed_errors", "tx_errors",
1748 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1749 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1750 "rx_dropped", "tx_aborted_errors", "tx_packets",
1751 "rx_errors", "tx_bytes", "tx_window_errors",
1752 "rx_fifo_errors", "tx_carrier_errors",
1759 snprintf(buf, sizeof(buf), "/sys/class/net/%s/statistics", dev->ifname);
1760 stats_dir = open(buf, O_DIRECTORY);
1764 for (i = 0; i < ARRAY_SIZE(counters); i++)
1765 if (read_uint64_file(stats_dir, counters[i], &val))
1766 blobmsg_add_u64(b, counters[i], val);
1772 static int system_addr(struct device *dev, struct device_addr *addr, int cmd)
1774 bool v4 = ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET4);
1775 int alen = v4 ? 4 : 16;
1776 unsigned int flags = 0;
1777 struct ifaddrmsg ifa = {
1778 .ifa_family = (alen == 4) ? AF_INET : AF_INET6,
1779 .ifa_prefixlen = addr->mask,
1780 .ifa_index = dev->ifindex,
1784 if (cmd == RTM_NEWADDR)
1785 flags |= NLM_F_CREATE | NLM_F_REPLACE;
1787 msg = nlmsg_alloc_simple(cmd, flags);
1791 nlmsg_append(msg, &ifa, sizeof(ifa), 0);
1792 nla_put(msg, IFA_LOCAL, alen, &addr->addr);
1794 if (addr->broadcast)
1795 nla_put_u32(msg, IFA_BROADCAST, addr->broadcast);
1796 if (addr->point_to_point)
1797 nla_put_u32(msg, IFA_ADDRESS, addr->point_to_point);
1799 time_t now = system_get_rtime();
1800 struct ifa_cacheinfo cinfo = {0xffffffffU, 0xffffffffU, 0, 0};
1802 if (addr->preferred_until) {
1803 int64_t preferred = addr->preferred_until - now;
1806 else if (preferred > UINT32_MAX)
1807 preferred = UINT32_MAX;
1809 cinfo.ifa_prefered = preferred;
1812 if (addr->valid_until) {
1813 int64_t valid = addr->valid_until - now;
1818 else if (valid > UINT32_MAX)
1821 cinfo.ifa_valid = valid;
1824 nla_put(msg, IFA_CACHEINFO, sizeof(cinfo), &cinfo);
1826 if (cmd == RTM_NEWADDR && (addr->flags & DEVADDR_OFFLINK))
1827 nla_put_u32(msg, IFA_FLAGS, IFA_F_NOPREFIXROUTE);
1830 return system_rtnl_call(msg);
1833 int system_add_address(struct device *dev, struct device_addr *addr)
1835 return system_addr(dev, addr, RTM_NEWADDR);
1838 int system_del_address(struct device *dev, struct device_addr *addr)
1840 return system_addr(dev, addr, RTM_DELADDR);
1843 static int system_rt(struct device *dev, struct device_route *route, int cmd)
1845 int alen = ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET4) ? 4 : 16;
1847 unsigned int flags = 0;
1850 have_gw = !!route->nexthop.in.s_addr;
1852 have_gw = route->nexthop.in6.s6_addr32[0] ||
1853 route->nexthop.in6.s6_addr32[1] ||
1854 route->nexthop.in6.s6_addr32[2] ||
1855 route->nexthop.in6.s6_addr32[3];
1857 unsigned int table = (route->flags & (DEVROUTE_TABLE | DEVROUTE_SRCTABLE))
1858 ? route->table : RT_TABLE_MAIN;
1860 struct rtmsg rtm = {
1861 .rtm_family = (alen == 4) ? AF_INET : AF_INET6,
1862 .rtm_dst_len = route->mask,
1863 .rtm_src_len = route->sourcemask,
1864 .rtm_table = (table < 256) ? table : RT_TABLE_UNSPEC,
1865 .rtm_protocol = (route->flags & DEVROUTE_PROTO) ? route->proto : RTPROT_STATIC,
1866 .rtm_scope = RT_SCOPE_NOWHERE,
1867 .rtm_type = (cmd == RTM_DELROUTE) ? 0: RTN_UNICAST,
1868 .rtm_flags = (route->flags & DEVROUTE_ONLINK) ? RTNH_F_ONLINK : 0,
1872 if (cmd == RTM_NEWROUTE) {
1873 flags |= NLM_F_CREATE | NLM_F_REPLACE;
1875 if (!dev) { // Add null-route
1876 rtm.rtm_scope = RT_SCOPE_UNIVERSE;
1877 rtm.rtm_type = RTN_UNREACHABLE;
1880 rtm.rtm_scope = (have_gw) ? RT_SCOPE_UNIVERSE : RT_SCOPE_LINK;
1883 if (route->flags & DEVROUTE_TYPE) {
1884 rtm.rtm_type = route->type;
1885 if (!(route->flags & (DEVROUTE_TABLE | DEVROUTE_SRCTABLE))) {
1886 if (rtm.rtm_type == RTN_LOCAL || rtm.rtm_type == RTN_BROADCAST ||
1887 rtm.rtm_type == RTN_NAT || rtm.rtm_type == RTN_ANYCAST)
1888 rtm.rtm_table = RT_TABLE_LOCAL;
1891 if (rtm.rtm_type == RTN_LOCAL || rtm.rtm_type == RTN_NAT) {
1892 rtm.rtm_scope = RT_SCOPE_HOST;
1893 } else if (rtm.rtm_type == RTN_BROADCAST || rtm.rtm_type == RTN_MULTICAST ||
1894 rtm.rtm_type == RTN_ANYCAST) {
1895 rtm.rtm_scope = RT_SCOPE_LINK;
1896 } else if (rtm.rtm_type == RTN_BLACKHOLE || rtm.rtm_type == RTN_UNREACHABLE ||
1897 rtm.rtm_type == RTN_PROHIBIT || rtm.rtm_type == RTN_FAILED_POLICY ||
1898 rtm.rtm_type == RTN_THROW) {
1899 rtm.rtm_scope = RT_SCOPE_UNIVERSE;
1904 msg = nlmsg_alloc_simple(cmd, flags);
1908 nlmsg_append(msg, &rtm, sizeof(rtm), 0);
1911 nla_put(msg, RTA_DST, alen, &route->addr);
1913 if (route->sourcemask) {
1914 if (rtm.rtm_family == AF_INET)
1915 nla_put(msg, RTA_PREFSRC, alen, &route->source);
1917 nla_put(msg, RTA_SRC, alen, &route->source);
1920 if (route->metric > 0)
1921 nla_put_u32(msg, RTA_PRIORITY, route->metric);
1924 nla_put(msg, RTA_GATEWAY, alen, &route->nexthop);
1927 nla_put_u32(msg, RTA_OIF, dev->ifindex);
1930 nla_put_u32(msg, RTA_TABLE, table);
1932 if (route->flags & DEVROUTE_MTU) {
1933 struct nlattr *metrics;
1935 if (!(metrics = nla_nest_start(msg, RTA_METRICS)))
1936 goto nla_put_failure;
1938 nla_put_u32(msg, RTAX_MTU, route->mtu);
1940 nla_nest_end(msg, metrics);
1943 return system_rtnl_call(msg);
1950 int system_add_route(struct device *dev, struct device_route *route)
1952 return system_rt(dev, route, RTM_NEWROUTE);
1955 int system_del_route(struct device *dev, struct device_route *route)
1957 return system_rt(dev, route, RTM_DELROUTE);
1960 int system_flush_routes(void)
1962 const char *names[] = {
1963 "/proc/sys/net/ipv4/route/flush",
1964 "/proc/sys/net/ipv6/route/flush"
1968 for (i = 0; i < ARRAY_SIZE(names); i++) {
1969 fd = open(names[i], O_WRONLY);
1973 if (write(fd, "-1", 2)) {}
1979 bool system_resolve_rt_type(const char *type, unsigned int *id)
1981 return system_rtn_aton(type, id);
1984 bool system_resolve_rt_proto(const char *type, unsigned int *id)
1988 unsigned int n, proto = 256;
1989 n = strtoul(type, &e, 0);
1990 if (!*e && e != type)
1992 else if (!strcmp(type, "unspec"))
1993 proto = RTPROT_UNSPEC;
1994 else if (!strcmp(type, "kernel"))
1995 proto = RTPROT_KERNEL;
1996 else if (!strcmp(type, "boot"))
1997 proto = RTPROT_BOOT;
1998 else if (!strcmp(type, "static"))
1999 proto = RTPROT_STATIC;
2000 else if ((f = fopen("/etc/iproute2/rt_protos", "r")) != NULL) {
2001 while (fgets(buf, sizeof(buf) - 1, f) != NULL) {
2002 if ((e = strtok(buf, " \t\n")) == NULL || *e == '#')
2005 n = strtoul(e, NULL, 10);
2006 e = strtok(NULL, " \t\n");
2008 if (e && !strcmp(e, type)) {
2023 bool system_resolve_rt_table(const char *name, unsigned int *id)
2027 unsigned int n, table = RT_TABLE_UNSPEC;
2029 /* first try to parse table as number */
2030 if ((n = strtoul(name, &e, 0)) > 0 && !*e)
2033 /* handle well known aliases */
2034 else if (!strcmp(name, "default"))
2035 table = RT_TABLE_DEFAULT;
2036 else if (!strcmp(name, "main"))
2037 table = RT_TABLE_MAIN;
2038 else if (!strcmp(name, "local"))
2039 table = RT_TABLE_LOCAL;
2041 /* try to look up name in /etc/iproute2/rt_tables */
2042 else if ((f = fopen("/etc/iproute2/rt_tables", "r")) != NULL)
2044 while (fgets(buf, sizeof(buf) - 1, f) != NULL)
2046 if ((e = strtok(buf, " \t\n")) == NULL || *e == '#')
2049 n = strtoul(e, NULL, 10);
2050 e = strtok(NULL, " \t\n");
2052 if (e && !strcmp(e, name))
2062 if (table == RT_TABLE_UNSPEC)
2069 bool system_is_default_rt_table(unsigned int id)
2071 return (id == RT_TABLE_MAIN);
2074 bool system_resolve_rpfilter(const char *filter, unsigned int *id)
2079 if (!strcmp(filter, "strict"))
2081 else if (!strcmp(filter, "loose"))
2084 n = strtoul(filter, &e, 0);
2085 if (*e || e == filter || n > 2)
2093 static int system_iprule(struct iprule *rule, int cmd)
2095 int alen = ((rule->flags & IPRULE_FAMILY) == IPRULE_INET4) ? 4 : 16;
2098 struct rtmsg rtm = {
2099 .rtm_family = (alen == 4) ? AF_INET : AF_INET6,
2100 .rtm_protocol = RTPROT_STATIC,
2101 .rtm_scope = RT_SCOPE_UNIVERSE,
2102 .rtm_table = RT_TABLE_UNSPEC,
2103 .rtm_type = RTN_UNSPEC,
2107 if (cmd == RTM_NEWRULE)
2108 rtm.rtm_type = RTN_UNICAST;
2111 rtm.rtm_flags |= FIB_RULE_INVERT;
2113 if (rule->flags & IPRULE_SRC)
2114 rtm.rtm_src_len = rule->src_mask;
2116 if (rule->flags & IPRULE_DEST)
2117 rtm.rtm_dst_len = rule->dest_mask;
2119 if (rule->flags & IPRULE_TOS)
2120 rtm.rtm_tos = rule->tos;
2122 if (rule->flags & IPRULE_LOOKUP) {
2123 if (rule->lookup < 256)
2124 rtm.rtm_table = rule->lookup;
2127 if (rule->flags & IPRULE_ACTION)
2128 rtm.rtm_type = rule->action;
2129 else if (rule->flags & IPRULE_GOTO)
2130 rtm.rtm_type = FR_ACT_GOTO;
2131 else if (!(rule->flags & (IPRULE_LOOKUP | IPRULE_ACTION | IPRULE_GOTO)))
2132 rtm.rtm_type = FR_ACT_NOP;
2134 msg = nlmsg_alloc_simple(cmd, NLM_F_REQUEST);
2139 nlmsg_append(msg, &rtm, sizeof(rtm), 0);
2141 if (rule->flags & IPRULE_IN)
2142 nla_put(msg, FRA_IFNAME, strlen(rule->in_dev) + 1, rule->in_dev);
2144 if (rule->flags & IPRULE_OUT)
2145 nla_put(msg, FRA_OIFNAME, strlen(rule->out_dev) + 1, rule->out_dev);
2147 if (rule->flags & IPRULE_SRC)
2148 nla_put(msg, FRA_SRC, alen, &rule->src_addr);
2150 if (rule->flags & IPRULE_DEST)
2151 nla_put(msg, FRA_DST, alen, &rule->dest_addr);
2153 if (rule->flags & IPRULE_PRIORITY)
2154 nla_put_u32(msg, FRA_PRIORITY, rule->priority);
2155 else if (cmd == RTM_NEWRULE)
2156 nla_put_u32(msg, FRA_PRIORITY, rule->order);
2158 if (rule->flags & IPRULE_FWMARK)
2159 nla_put_u32(msg, FRA_FWMARK, rule->fwmark);
2161 if (rule->flags & IPRULE_FWMASK)
2162 nla_put_u32(msg, FRA_FWMASK, rule->fwmask);
2164 if (rule->flags & IPRULE_LOOKUP) {
2165 if (rule->lookup >= 256)
2166 nla_put_u32(msg, FRA_TABLE, rule->lookup);
2169 if (rule->flags & IPRULE_SUP_PREFIXLEN)
2170 nla_put_u32(msg, FRA_SUPPRESS_PREFIXLEN, rule->sup_prefixlen);
2172 if (rule->flags & IPRULE_GOTO)
2173 nla_put_u32(msg, FRA_GOTO, rule->gotoid);
2175 return system_rtnl_call(msg);
2178 int system_add_iprule(struct iprule *rule)
2180 return system_iprule(rule, RTM_NEWRULE);
2183 int system_del_iprule(struct iprule *rule)
2185 return system_iprule(rule, RTM_DELRULE);
2188 int system_flush_iprules(void)
2193 system_if_clear_entries(NULL, RTM_GETRULE, AF_INET);
2194 system_if_clear_entries(NULL, RTM_GETRULE, AF_INET6);
2196 memset(&rule, 0, sizeof(rule));
2199 rule.flags = IPRULE_INET4 | IPRULE_PRIORITY | IPRULE_LOOKUP;
2202 rule.lookup = RT_TABLE_LOCAL;
2203 rv |= system_iprule(&rule, RTM_NEWRULE);
2205 rule.priority = 32766;
2206 rule.lookup = RT_TABLE_MAIN;
2207 rv |= system_iprule(&rule, RTM_NEWRULE);
2209 rule.priority = 32767;
2210 rule.lookup = RT_TABLE_DEFAULT;
2211 rv |= system_iprule(&rule, RTM_NEWRULE);
2214 rule.flags = IPRULE_INET6 | IPRULE_PRIORITY | IPRULE_LOOKUP;
2217 rule.lookup = RT_TABLE_LOCAL;
2218 rv |= system_iprule(&rule, RTM_NEWRULE);
2220 rule.priority = 32766;
2221 rule.lookup = RT_TABLE_MAIN;
2222 rv |= system_iprule(&rule, RTM_NEWRULE);
2227 bool system_resolve_iprule_action(const char *action, unsigned int *id)
2229 return system_rtn_aton(action, id);
2232 time_t system_get_rtime(void)
2237 if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, &ts) == 0)
2240 if (gettimeofday(&tv, NULL) == 0)
2247 #define IP_DF 0x4000
2250 static int tunnel_ioctl(const char *name, int cmd, void *p)
2254 memset(&ifr, 0, sizeof(ifr));
2255 strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
2256 ifr.ifr_ifru.ifru_data = p;
2257 return ioctl(sock_ioctl, cmd, &ifr);
2260 #ifdef IFLA_IPTUN_MAX
2261 static int system_add_ip6_tunnel(const char *name, const unsigned int link,
2262 struct blob_attr **tb)
2264 struct nl_msg *nlm = nlmsg_alloc_simple(RTM_NEWLINK,
2265 NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
2266 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC };
2267 struct blob_attr *cur;
2268 int ret = 0, ttl = 0;
2273 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
2274 nla_put_string(nlm, IFLA_IFNAME, name);
2277 nla_put_u32(nlm, IFLA_LINK, link);
2279 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
2285 nla_put_string(nlm, IFLA_INFO_KIND, "ip6tnl");
2286 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
2293 nla_put_u32(nlm, IFLA_IPTUN_LINK, link);
2295 if ((cur = tb[TUNNEL_ATTR_TTL]))
2296 ttl = blobmsg_get_u32(cur);
2298 nla_put_u8(nlm, IFLA_IPTUN_PROTO, IPPROTO_IPIP);
2299 nla_put_u8(nlm, IFLA_IPTUN_TTL, (ttl) ? ttl : 64);
2300 nla_put_u8(nlm, IFLA_IPTUN_ENCAP_LIMIT, 4);
2302 struct in6_addr in6buf;
2303 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2304 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2308 nla_put(nlm, IFLA_IPTUN_LOCAL, sizeof(in6buf), &in6buf);
2311 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2312 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2316 nla_put(nlm, IFLA_IPTUN_REMOTE, sizeof(in6buf), &in6buf);
2319 #ifdef IFLA_IPTUN_FMR_MAX
2320 if ((cur = tb[TUNNEL_ATTR_DATA])) {
2321 struct blob_attr *dcur;
2322 unsigned drem, fmrcnt = 0;
2323 struct nlattr *fmrs = nla_nest_start(nlm, IFLA_IPTUN_FMRS);
2330 blobmsg_for_each_attr(dcur, cur, drem) {
2331 if (blobmsg_type(dcur) != BLOBMSG_TYPE_ARRAY ||
2332 strcmp(blobmsg_name(dcur), "fmrs") ||
2333 blobmsg_check_array(dcur, BLOBMSG_TYPE_UNSPEC) <= 0)
2336 struct blob_attr *rcur;
2338 blobmsg_for_each_attr(rcur, dcur, rrem) {
2339 struct blob_attr *tb_fmr[__FMR_DATA_ATTR_MAX], *tb_cur;
2340 struct in6_addr ip6prefix;
2341 struct in_addr ip4prefix;
2342 unsigned ip4len, ip6len, ealen, offset;
2344 blobmsg_parse(fmr_data_attr_list.params, __FMR_DATA_ATTR_MAX, tb_fmr,
2345 blobmsg_data(rcur), blobmsg_len(rcur));
2347 if (!(tb_cur = tb_fmr[FMR_DATA_PREFIX6]) ||
2348 !parse_ip_and_netmask(AF_INET6,
2349 blobmsg_data(tb_cur), &ip6prefix,
2355 if (!(tb_cur = tb_fmr[FMR_DATA_PREFIX4]) ||
2356 !parse_ip_and_netmask(AF_INET,
2357 blobmsg_data(tb_cur), &ip4prefix,
2363 if (!(tb_cur = tb_fmr[FMR_DATA_EALEN])) {
2367 ealen = blobmsg_get_u32(tb_cur);
2369 if (!(tb_cur = tb_fmr[FMR_DATA_OFFSET])) {
2373 offset = blobmsg_get_u32(tb_cur);
2375 struct nlattr *rule = nla_nest_start(nlm, ++fmrcnt);
2381 nla_put(nlm, IFLA_IPTUN_FMR_IP6_PREFIX, sizeof(ip6prefix), &ip6prefix);
2382 nla_put(nlm, IFLA_IPTUN_FMR_IP4_PREFIX, sizeof(ip4prefix), &ip4prefix);
2383 nla_put_u8(nlm, IFLA_IPTUN_FMR_IP6_PREFIX_LEN, ip6len);
2384 nla_put_u8(nlm, IFLA_IPTUN_FMR_IP4_PREFIX_LEN, ip4len);
2385 nla_put_u8(nlm, IFLA_IPTUN_FMR_EA_LEN, ealen);
2386 nla_put_u8(nlm, IFLA_IPTUN_FMR_OFFSET, offset);
2388 nla_nest_end(nlm, rule);
2391 nla_nest_end(nlm, fmrs);
2395 nla_nest_end(nlm, infodata);
2396 nla_nest_end(nlm, linkinfo);
2398 return system_rtnl_call(nlm);
2406 #ifdef IFLA_IPTUN_MAX
2407 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
2408 static int system_add_gre_tunnel(const char *name, const char *kind,
2409 const unsigned int link, struct blob_attr **tb, bool v6)
2412 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
2413 struct blob_attr *cur;
2414 uint32_t ikey = 0, okey = 0, flags = 0, flowinfo = 0;
2415 uint16_t iflags = 0, oflags = 0;
2417 int ret = 0, ttl = 0;
2419 nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
2423 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
2424 nla_put_string(nlm, IFLA_IFNAME, name);
2426 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
2432 nla_put_string(nlm, IFLA_INFO_KIND, kind);
2433 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
2440 nla_put_u32(nlm, IFLA_GRE_LINK, link);
2442 if ((cur = tb[TUNNEL_ATTR_TTL]))
2443 ttl = blobmsg_get_u32(cur);
2445 if ((cur = tb[TUNNEL_ATTR_TOS])) {
2446 char *str = blobmsg_get_string(cur);
2447 if (strcmp(str, "inherit")) {
2450 if (!system_tos_aton(str, &uval)) {
2456 flowinfo |= htonl(uval << 20) & IP6_FLOWINFO_TCLASS;
2461 flags |= IP6_TNL_F_USE_ORIG_TCLASS;
2467 if ((cur = tb[TUNNEL_ATTR_DATA])) {
2468 struct blob_attr *tb_data[__GRE_DATA_ATTR_MAX];
2470 blobmsg_parse(gre_data_attr_list.params, __GRE_DATA_ATTR_MAX, tb_data,
2471 blobmsg_data(cur), blobmsg_len(cur));
2473 if ((cur = tb_data[GRE_DATA_IKEY])) {
2474 if ((ikey = blobmsg_get_u32(cur)))
2478 if ((cur = tb_data[GRE_DATA_OKEY])) {
2479 if ((okey = blobmsg_get_u32(cur)))
2483 if ((cur = tb_data[GRE_DATA_ICSUM])) {
2484 if (blobmsg_get_bool(cur))
2488 if ((cur = tb_data[GRE_DATA_OCSUM])) {
2489 if (blobmsg_get_bool(cur))
2493 if ((cur = tb_data[GRE_DATA_ISEQNO])) {
2494 if (blobmsg_get_bool(cur))
2498 if ((cur = tb[GRE_DATA_OSEQNO])) {
2499 if (blobmsg_get_bool(cur))
2505 struct in6_addr in6buf;
2506 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2507 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2511 nla_put(nlm, IFLA_GRE_LOCAL, sizeof(in6buf), &in6buf);
2514 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2515 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2519 nla_put(nlm, IFLA_GRE_REMOTE, sizeof(in6buf), &in6buf);
2521 nla_put_u8(nlm, IFLA_GRE_ENCAP_LIMIT, 4);
2524 nla_put_u32(nlm, IFLA_GRE_FLOWINFO, flowinfo);
2527 nla_put_u32(nlm, IFLA_GRE_FLAGS, flags);
2532 struct in_addr inbuf;
2535 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2536 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2540 nla_put(nlm, IFLA_GRE_LOCAL, sizeof(inbuf), &inbuf);
2543 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2544 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2548 nla_put(nlm, IFLA_GRE_REMOTE, sizeof(inbuf), &inbuf);
2550 if (IN_MULTICAST(ntohl(inbuf.s_addr))) {
2552 okey = inbuf.s_addr;
2557 ikey = inbuf.s_addr;
2563 if ((cur = tb[TUNNEL_ATTR_DF]))
2564 set_df = blobmsg_get_bool(cur);
2567 /* ttl != 0 and nopmtudisc are incompatible */
2575 nla_put_u8(nlm, IFLA_GRE_PMTUDISC, set_df ? 1 : 0);
2577 nla_put_u8(nlm, IFLA_GRE_TOS, tos);
2581 nla_put_u8(nlm, IFLA_GRE_TTL, ttl);
2584 nla_put_u16(nlm, IFLA_GRE_OFLAGS, oflags);
2587 nla_put_u16(nlm, IFLA_GRE_IFLAGS, iflags);
2590 nla_put_u32(nlm, IFLA_GRE_OKEY, htonl(okey));
2593 nla_put_u32(nlm, IFLA_GRE_IKEY, htonl(ikey));
2595 nla_nest_end(nlm, infodata);
2596 nla_nest_end(nlm, linkinfo);
2598 return system_rtnl_call(nlm);
2607 static int system_add_vti_tunnel(const char *name, const char *kind,
2608 const unsigned int link, struct blob_attr **tb, bool v6)
2611 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
2612 struct blob_attr *cur;
2615 nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
2619 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
2620 nla_put_string(nlm, IFLA_IFNAME, name);
2622 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
2628 nla_put_string(nlm, IFLA_INFO_KIND, kind);
2629 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
2636 nla_put_u32(nlm, IFLA_VTI_LINK, link);
2639 struct in6_addr in6buf;
2640 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2641 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2645 nla_put(nlm, IFLA_VTI_LOCAL, sizeof(in6buf), &in6buf);
2648 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2649 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2653 nla_put(nlm, IFLA_VTI_REMOTE, sizeof(in6buf), &in6buf);
2657 struct in_addr inbuf;
2659 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2660 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2664 nla_put(nlm, IFLA_VTI_LOCAL, sizeof(inbuf), &inbuf);
2667 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2668 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2672 nla_put(nlm, IFLA_VTI_REMOTE, sizeof(inbuf), &inbuf);
2677 if ((cur = tb[TUNNEL_ATTR_DATA])) {
2678 struct blob_attr *tb_data[__VTI_DATA_ATTR_MAX];
2679 uint32_t ikey = 0, okey = 0;
2681 blobmsg_parse(vti_data_attr_list.params, __VTI_DATA_ATTR_MAX, tb_data,
2682 blobmsg_data(cur), blobmsg_len(cur));
2684 if ((cur = tb_data[VTI_DATA_IKEY])) {
2685 if ((ikey = blobmsg_get_u32(cur)))
2686 nla_put_u32(nlm, IFLA_VTI_IKEY, htonl(ikey));
2689 if ((cur = tb_data[VTI_DATA_OKEY])) {
2690 if ((okey = blobmsg_get_u32(cur)))
2691 nla_put_u32(nlm, IFLA_VTI_OKEY, htonl(okey));
2695 nla_nest_end(nlm, infodata);
2696 nla_nest_end(nlm, linkinfo);
2698 return system_rtnl_call(nlm);
2706 #ifdef IFLA_VXLAN_MAX
2707 static int system_add_vxlan(const char *name, const unsigned int link, struct blob_attr **tb, bool v6)
2709 struct blob_attr *tb_data[__VXLAN_DATA_ATTR_MAX];
2711 struct nlattr *linkinfo, *data;
2712 struct ifinfomsg iim = { .ifi_family = AF_UNSPEC, };
2713 struct blob_attr *cur;
2716 if ((cur = tb[TUNNEL_ATTR_DATA]))
2717 blobmsg_parse(vxlan_data_attr_list.params, __VXLAN_DATA_ATTR_MAX, tb_data,
2718 blobmsg_data(cur), blobmsg_len(cur));
2722 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
2727 nlmsg_append(msg, &iim, sizeof(iim), 0);
2729 nla_put_string(msg, IFLA_IFNAME, name);
2731 if ((cur = tb_data[VXLAN_DATA_ATTR_MACADDR])) {
2732 struct ether_addr *ea = ether_aton(blobmsg_get_string(cur));
2738 nla_put(msg, IFLA_ADDRESS, ETH_ALEN, ea);
2741 if ((cur = tb[TUNNEL_ATTR_MTU])) {
2742 uint32_t mtu = blobmsg_get_u32(cur);
2743 nla_put_u32(msg, IFLA_MTU, mtu);
2746 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO))) {
2751 nla_put_string(msg, IFLA_INFO_KIND, "vxlan");
2753 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) {
2759 nla_put_u32(msg, IFLA_VXLAN_LINK, link);
2761 if ((cur = tb_data[VXLAN_DATA_ATTR_ID])) {
2762 uint32_t id = blobmsg_get_u32(cur);
2763 if (id >= (1u << 24) - 1) {
2768 nla_put_u32(msg, IFLA_VXLAN_ID, id);
2772 struct in6_addr in6buf;
2773 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2774 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2778 nla_put(msg, IFLA_VXLAN_LOCAL6, sizeof(in6buf), &in6buf);
2781 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2782 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2786 nla_put(msg, IFLA_VXLAN_GROUP6, sizeof(in6buf), &in6buf);
2789 struct in_addr inbuf;
2791 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2792 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2796 nla_put(msg, IFLA_VXLAN_LOCAL, sizeof(inbuf), &inbuf);
2799 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2800 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2804 nla_put(msg, IFLA_VXLAN_GROUP, sizeof(inbuf), &inbuf);
2808 uint32_t port = 4789;
2809 if ((cur = tb_data[VXLAN_DATA_ATTR_PORT])) {
2810 port = blobmsg_get_u32(cur);
2811 if (port < 1 || port > 65535) {
2816 nla_put_u16(msg, IFLA_VXLAN_PORT, htons(port));
2818 if ((cur = tb_data[VXLAN_DATA_ATTR_RXCSUM])) {
2819 bool rxcsum = blobmsg_get_bool(cur);
2820 nla_put_u8(msg, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, !rxcsum);
2823 if ((cur = tb_data[VXLAN_DATA_ATTR_TXCSUM])) {
2824 bool txcsum = blobmsg_get_bool(cur);
2825 nla_put_u8(msg, IFLA_VXLAN_UDP_CSUM, txcsum);
2826 nla_put_u8(msg, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, !txcsum);
2829 if ((cur = tb[TUNNEL_ATTR_TOS])) {
2830 char *str = blobmsg_get_string(cur);
2833 if (strcmp(str, "inherit")) {
2834 if (!system_tos_aton(str, &tos)) {
2840 nla_put_u8(msg, IFLA_VXLAN_TOS, tos);
2843 if ((cur = tb[TUNNEL_ATTR_TTL])) {
2844 uint32_t ttl = blobmsg_get_u32(cur);
2845 if (ttl < 1 || ttl > 255) {
2850 nla_put_u8(msg, IFLA_VXLAN_TTL, ttl);
2853 nla_nest_end(msg, data);
2854 nla_nest_end(msg, linkinfo);
2856 ret = system_rtnl_call(msg);
2858 D(SYSTEM, "Error adding vxlan '%s': %d\n", name, ret);
2868 static int system_add_sit_tunnel(const char *name, const unsigned int link, struct blob_attr **tb)
2870 struct blob_attr *cur;
2873 if (system_add_proto_tunnel(name, IPPROTO_IPV6, link, tb) < 0)
2877 if ((cur = tb[TUNNEL_ATTR_DATA])) {
2878 struct blob_attr *tb_data[__SIXRD_DATA_ATTR_MAX];
2880 struct ip_tunnel_6rd p6;
2882 blobmsg_parse(sixrd_data_attr_list.params, __SIXRD_DATA_ATTR_MAX, tb_data,
2883 blobmsg_data(cur), blobmsg_len(cur));
2885 memset(&p6, 0, sizeof(p6));
2887 if ((cur = tb_data[SIXRD_DATA_PREFIX])) {
2888 if (!parse_ip_and_netmask(AF_INET6, blobmsg_data(cur),
2889 &p6.prefix, &mask) || mask > 128) {
2894 p6.prefixlen = mask;
2897 if ((cur = tb_data[SIXRD_DATA_RELAY_PREFIX])) {
2898 if (!parse_ip_and_netmask(AF_INET, blobmsg_data(cur),
2899 &p6.relay_prefix, &mask) || mask > 32) {
2904 p6.relay_prefixlen = mask;
2907 if (tunnel_ioctl(name, SIOCADD6RD, &p6) < 0) {
2917 __system_del_ip_tunnel(name, tb);
2921 static int system_add_proto_tunnel(const char *name, const uint8_t proto, const unsigned int link, struct blob_attr **tb)
2923 struct blob_attr *cur;
2925 struct ip_tunnel_parm p = {
2934 if ((cur = tb[TUNNEL_ATTR_LOCAL]) &&
2935 inet_pton(AF_INET, blobmsg_data(cur), &p.iph.saddr) < 1)
2938 if ((cur = tb[TUNNEL_ATTR_REMOTE]) &&
2939 inet_pton(AF_INET, blobmsg_data(cur), &p.iph.daddr) < 1)
2942 if ((cur = tb[TUNNEL_ATTR_DF]))
2943 set_df = blobmsg_get_bool(cur);
2945 if ((cur = tb[TUNNEL_ATTR_TTL]))
2946 p.iph.ttl = blobmsg_get_u32(cur);
2948 if ((cur = tb[TUNNEL_ATTR_TOS])) {
2949 char *str = blobmsg_get_string(cur);
2950 if (strcmp(str, "inherit")) {
2953 if (!system_tos_aton(str, &uval))
2961 p.iph.frag_off = set_df ? htons(IP_DF) : 0;
2962 /* ttl !=0 and nopmtudisc are incompatible */
2963 if (p.iph.ttl && p.iph.frag_off == 0)
2966 strncpy(p.name, name, sizeof(p.name));
2968 switch (p.iph.protocol) {
2970 return tunnel_ioctl("tunl0", SIOCADDTUNNEL, &p);
2972 return tunnel_ioctl("sit0", SIOCADDTUNNEL, &p);
2979 static int __system_del_ip_tunnel(const char *name, struct blob_attr **tb)
2981 struct blob_attr *cur;
2984 if (!(cur = tb[TUNNEL_ATTR_TYPE]))
2986 str = blobmsg_data(cur);
2988 if (!strcmp(str, "greip") || !strcmp(str, "gretapip") ||
2989 !strcmp(str, "greip6") || !strcmp(str, "gretapip6") ||
2990 !strcmp(str, "vtiip") || !strcmp(str, "vtiip6") ||
2991 !strcmp(str, "vxlan") || !strcmp(str, "vxlan6"))
2992 return system_link_del(name);
2994 return tunnel_ioctl(name, SIOCDELTUNNEL, NULL);
2997 int system_del_ip_tunnel(const char *name, struct blob_attr *attr)
2999 struct blob_attr *tb[__TUNNEL_ATTR_MAX];
3001 blobmsg_parse(tunnel_attr_list.params, __TUNNEL_ATTR_MAX, tb,
3002 blob_data(attr), blob_len(attr));
3004 return __system_del_ip_tunnel(name, tb);
3007 int system_update_ipv6_mtu(struct device *dev, int mtu)
3013 snprintf(buf, sizeof(buf), "/proc/sys/net/ipv6/conf/%s/mtu",
3016 fd = open(buf, O_RDWR);
3021 ssize_t len = read(fd, buf, sizeof(buf) - 1);
3028 if (write(fd, buf, snprintf(buf, sizeof(buf), "%i", mtu)) > 0)
3037 int system_add_ip_tunnel(const char *name, struct blob_attr *attr)
3039 struct blob_attr *tb[__TUNNEL_ATTR_MAX];
3040 struct blob_attr *cur;
3043 blobmsg_parse(tunnel_attr_list.params, __TUNNEL_ATTR_MAX, tb,
3044 blob_data(attr), blob_len(attr));
3046 __system_del_ip_tunnel(name, tb);
3048 if (!(cur = tb[TUNNEL_ATTR_TYPE]))
3050 str = blobmsg_data(cur);
3052 unsigned int ttl = 0;
3053 if ((cur = tb[TUNNEL_ATTR_TTL])) {
3054 ttl = blobmsg_get_u32(cur);
3059 unsigned int link = 0;
3060 if ((cur = tb[TUNNEL_ATTR_LINK])) {
3061 struct interface *iface = vlist_find(&interfaces, blobmsg_data(cur), iface, node);
3065 if (iface->l3_dev.dev)
3066 link = iface->l3_dev.dev->ifindex;
3069 if (!strcmp(str, "sit"))
3070 return system_add_sit_tunnel(name, link, tb);
3071 #ifdef IFLA_IPTUN_MAX
3072 else if (!strcmp(str, "ipip6")) {
3073 return system_add_ip6_tunnel(name, link, tb);
3074 } else if (!strcmp(str, "greip")) {
3075 return system_add_gre_tunnel(name, "gre", link, tb, false);
3076 } else if (!strcmp(str, "gretapip")) {
3077 return system_add_gre_tunnel(name, "gretap", link, tb, false);
3078 } else if (!strcmp(str, "greip6")) {
3079 return system_add_gre_tunnel(name, "ip6gre", link, tb, true);
3080 } else if (!strcmp(str, "gretapip6")) {
3081 return system_add_gre_tunnel(name, "ip6gretap", link, tb, true);
3083 } else if (!strcmp(str, "vtiip")) {
3084 return system_add_vti_tunnel(name, "vti", link, tb, false);
3085 } else if (!strcmp(str, "vtiip6")) {
3086 return system_add_vti_tunnel(name, "vti6", link, tb, true);
3088 #ifdef IFLA_VXLAN_MAX
3089 } else if(!strcmp(str, "vxlan")) {
3090 return system_add_vxlan(name, link, tb, false);
3091 } else if(!strcmp(str, "vxlan6")) {
3092 return system_add_vxlan(name, link, tb, true);
3095 } else if (!strcmp(str, "ipip")) {
3096 return system_add_proto_tunnel(name, IPPROTO_IPIP, link, tb);