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>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2
10 * as published by the Free Software Foundation
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
19 #include <sys/socket.h>
20 #include <sys/ioctl.h>
22 #include <sys/syscall.h>
25 #include <net/if_arp.h>
27 #include <arpa/inet.h>
28 #include <netinet/in.h>
30 #include <linux/rtnetlink.h>
31 #include <linux/sockios.h>
33 #include <linux/if_addr.h>
34 #include <linux/if_link.h>
35 #include <linux/if_vlan.h>
36 #include <linux/if_bridge.h>
37 #include <linux/if_tunnel.h>
38 #include <linux/ip6_tunnel.h>
39 #include <linux/ethtool.h>
40 #include <linux/fib_rules.h>
41 #include <linux/version.h>
43 #ifndef RTN_FAILED_POLICY
44 #define RTN_FAILED_POLICY 12
47 #ifndef RT_TABLE_PRELOCAL
48 #define RT_TABLE_PRELOCAL 128
51 #ifndef IFA_F_NOPREFIXROUTE
52 #define IFA_F_NOPREFIXROUTE 0x200
56 #define IFA_FLAGS (IFA_MULTICAST + 1)
66 #include <netlink/msg.h>
67 #include <netlink/attr.h>
68 #include <netlink/socket.h>
69 #include <libubox/uloop.h>
76 struct uloop_fd uloop;
81 static int sock_ioctl = -1;
82 static struct nl_sock *sock_rtnl = NULL;
84 static int cb_rtnl_event(struct nl_msg *msg, void *arg);
85 static void handle_hotplug_event(struct uloop_fd *u, unsigned int events);
87 static char dev_buf[256];
90 handler_nl_event(struct uloop_fd *u, unsigned int events)
92 struct event_socket *ev = container_of(u, struct event_socket, uloop);
94 socklen_t errlen = sizeof(err);
97 nl_recvmsgs_default(ev->sock);
101 if (getsockopt(u->fd, SOL_SOCKET, SO_ERROR, (void *)&err, &errlen))
106 // Increase rx buffer size on netlink socket
108 if (nl_socket_set_buffer_size(ev->sock, ev->bufsize, 0))
111 // Request full dump since some info got dropped
112 struct rtgenmsg msg = { .rtgen_family = AF_UNSPEC };
113 nl_send_simple(ev->sock, RTM_GETLINK, NLM_F_DUMP, &msg, sizeof(msg));
123 uloop_fd_delete(&ev->uloop);
127 static struct nl_sock *
128 create_socket(int protocol, int groups)
130 struct nl_sock *sock;
132 sock = nl_socket_alloc();
137 nl_join_groups(sock, groups);
139 if (nl_connect(sock, protocol))
146 create_raw_event_socket(struct event_socket *ev, int protocol, int groups,
147 uloop_fd_handler cb, int flags)
149 ev->sock = create_socket(protocol, groups);
153 ev->uloop.fd = nl_socket_get_fd(ev->sock);
155 if (uloop_fd_add(&ev->uloop, ULOOP_READ|flags))
162 create_event_socket(struct event_socket *ev, int protocol,
163 int (*cb)(struct nl_msg *msg, void *arg))
165 if (!create_raw_event_socket(ev, protocol, 0, handler_nl_event, ULOOP_ERROR_CB))
168 // Install the valid custom callback handler
169 nl_socket_modify_cb(ev->sock, NL_CB_VALID, NL_CB_CUSTOM, cb, NULL);
171 // Disable sequence number checking on event sockets
172 nl_socket_disable_seq_check(ev->sock);
174 // Increase rx buffer size to 65K on event sockets
176 if (nl_socket_set_buffer_size(ev->sock, ev->bufsize, 0))
183 system_rtn_aton(const char *src, unsigned int *dst)
188 if (!strcmp(src, "local"))
190 else if (!strcmp(src, "nat"))
192 else if (!strcmp(src, "broadcast"))
194 else if (!strcmp(src, "anycast"))
196 else if (!strcmp(src, "multicast"))
198 else if (!strcmp(src, "prohibit"))
200 else if (!strcmp(src, "unreachable"))
202 else if (!strcmp(src, "blackhole"))
204 else if (!strcmp(src, "xresolve"))
206 else if (!strcmp(src, "unicast"))
208 else if (!strcmp(src, "throw"))
210 else if (!strcmp(src, "failed_policy"))
211 n = RTN_FAILED_POLICY;
213 n = strtoul(src, &e, 0);
214 if (!e || *e || e == src || n > 255)
223 system_tos_aton(const char *src, unsigned *dst)
227 *dst = strtoul(src, &e, 16);
228 if (e == src || *e || *dst > 255)
234 int system_init(void)
236 static struct event_socket rtnl_event;
237 static struct event_socket hotplug_event;
239 sock_ioctl = socket(AF_LOCAL, SOCK_DGRAM, 0);
240 system_fd_set_cloexec(sock_ioctl);
242 // Prepare socket for routing / address control
243 sock_rtnl = create_socket(NETLINK_ROUTE, 0);
247 if (!create_event_socket(&rtnl_event, NETLINK_ROUTE, cb_rtnl_event))
250 if (!create_raw_event_socket(&hotplug_event, NETLINK_KOBJECT_UEVENT, 1,
251 handle_hotplug_event, 0))
254 // Receive network link events form kernel
255 nl_socket_add_membership(rtnl_event.sock, RTNLGRP_LINK);
260 static void system_set_sysctl(const char *path, const char *val)
264 fd = open(path, O_WRONLY);
268 if (write(fd, val, strlen(val))) {}
272 static void system_set_dev_sysctl(const char *path, const char *device, const char *val)
274 snprintf(dev_buf, sizeof(dev_buf), path, device);
275 system_set_sysctl(dev_buf, val);
278 static void system_set_disable_ipv6(struct device *dev, const char *val)
280 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev->ifname, val);
283 static void system_set_rpfilter(struct device *dev, const char *val)
285 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter", dev->ifname, val);
288 static void system_set_acceptlocal(struct device *dev, const char *val)
290 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local", dev->ifname, val);
293 static void system_set_igmpversion(struct device *dev, const char *val)
295 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version", dev->ifname, val);
298 static void system_set_mldversion(struct device *dev, const char *val)
300 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version", dev->ifname, val);
303 static void system_set_neigh4reachabletime(struct device *dev, const char *val)
305 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms", dev->ifname, val);
308 static void system_set_neigh6reachabletime(struct device *dev, const char *val)
310 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms", dev->ifname, val);
313 static void system_set_dadtransmits(struct device *dev, const char *val)
315 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits", dev->ifname, val);
318 static void system_bridge_set_multicast_to_unicast(struct device *dev, const char *val)
320 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_to_unicast", dev->ifname, val);
323 static void system_bridge_set_hairpin_mode(struct device *dev, const char *val)
325 system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev->ifname, val);
328 static void system_bridge_set_multicast_router(struct device *dev, const char *val, bool bridge)
330 system_set_dev_sysctl(bridge ? "/sys/class/net/%s/bridge/multicast_router" :
331 "/sys/class/net/%s/brport/multicast_router",
335 static int system_get_sysctl(const char *path, char *buf, const size_t buf_sz)
337 int fd = -1, ret = -1;
339 fd = open(path, O_RDONLY);
343 ssize_t len = read(fd, buf, buf_sz - 1);
357 system_get_dev_sysctl(const char *path, const char *device, char *buf, const size_t buf_sz)
359 snprintf(dev_buf, sizeof(dev_buf), path, device);
360 return system_get_sysctl(dev_buf, buf, buf_sz);
363 static int system_get_disable_ipv6(struct device *dev, char *buf, const size_t buf_sz)
365 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
366 dev->ifname, buf, buf_sz);
369 static int system_get_rpfilter(struct device *dev, char *buf, const size_t buf_sz)
371 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
372 dev->ifname, buf, buf_sz);
375 static int system_get_acceptlocal(struct device *dev, char *buf, const size_t buf_sz)
377 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
378 dev->ifname, buf, buf_sz);
381 static int system_get_igmpversion(struct device *dev, char *buf, const size_t buf_sz)
383 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
384 dev->ifname, buf, buf_sz);
387 static int system_get_mldversion(struct device *dev, char *buf, const size_t buf_sz)
389 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
390 dev->ifname, buf, buf_sz);
393 static int system_get_neigh4reachabletime(struct device *dev, char *buf, const size_t buf_sz)
395 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
396 dev->ifname, buf, buf_sz);
399 static int system_get_neigh6reachabletime(struct device *dev, char *buf, const size_t buf_sz)
401 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
402 dev->ifname, buf, buf_sz);
405 static int system_get_dadtransmits(struct device *dev, char *buf, const size_t buf_sz)
407 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
408 dev->ifname, buf, buf_sz);
411 // Evaluate netlink messages
412 static int cb_rtnl_event(struct nl_msg *msg, void *arg)
414 struct nlmsghdr *nh = nlmsg_hdr(msg);
415 struct nlattr *nla[__IFLA_MAX];
419 if (nh->nlmsg_type != RTM_NEWLINK)
422 nlmsg_parse(nh, sizeof(struct ifinfomsg), nla, __IFLA_MAX - 1, NULL);
423 if (!nla[IFLA_IFNAME])
426 struct device *dev = device_get(nla_data(nla[IFLA_IFNAME]), false);
430 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev->ifname, buf, sizeof(buf)))
431 link_state = strtoul(buf, NULL, 0);
433 device_set_link(dev, link_state ? true : false);
440 handle_hotplug_msg(char *data, int size)
442 const char *subsystem = NULL, *interface = NULL;
443 char *cur, *end, *sep;
448 if (!strncmp(data, "add@", 4))
450 else if (!strncmp(data, "remove@", 7))
455 skip = strlen(data) + 1;
458 for (cur = data + skip; cur < end; cur += skip) {
459 skip = strlen(cur) + 1;
461 sep = strchr(cur, '=');
466 if (!strcmp(cur, "INTERFACE"))
468 else if (!strcmp(cur, "SUBSYSTEM")) {
470 if (strcmp(subsystem, "net") != 0)
473 if (subsystem && interface)
479 dev = device_get(interface, false);
483 if (dev->type != &simple_device_type)
486 if (add && system_if_force_external(dev->ifname))
489 device_set_present(dev, add);
493 handle_hotplug_event(struct uloop_fd *u, unsigned int events)
495 struct event_socket *ev = container_of(u, struct event_socket, uloop);
496 struct sockaddr_nl nla;
497 unsigned char *buf = NULL;
500 while ((size = nl_recv(ev->sock, &nla, &buf, NULL)) > 0) {
502 handle_hotplug_msg((char *) buf, size);
508 static int system_rtnl_call(struct nl_msg *msg)
512 ret = nl_send_auto_complete(sock_rtnl, msg);
518 return nl_wait_for_ack(sock_rtnl);
521 int system_bridge_delbr(struct device *bridge)
523 return ioctl(sock_ioctl, SIOCBRDELBR, bridge->ifname);
526 static int system_bridge_if(const char *bridge, struct device *dev, int cmd, void *data)
530 memset(&ifr, 0, sizeof(ifr));
532 ifr.ifr_ifindex = dev->ifindex;
535 strncpy(ifr.ifr_name, bridge, sizeof(ifr.ifr_name));
536 return ioctl(sock_ioctl, cmd, &ifr);
539 static bool system_is_bridge(const char *name, char *buf, int buflen)
543 snprintf(buf, buflen, "/sys/devices/virtual/net/%s/bridge", name);
544 if (stat(buf, &st) < 0)
550 static char *system_get_bridge(const char *name, char *buf, int buflen)
556 snprintf(buf, buflen, "/sys/devices/virtual/net/*/brif/%s/bridge", name);
557 if (glob(buf, GLOB_NOSORT, NULL, &gl) < 0)
561 len = readlink(gl.gl_pathv[0], buf, buflen);
569 path = strrchr(buf, '/');
577 system_bridge_set_wireless(struct device *bridge, struct device *dev)
579 bool mcast_to_ucast = dev->wireless_ap;
582 if (bridge->settings.flags & DEV_OPT_MULTICAST_TO_UNICAST &&
583 !bridge->settings.multicast_to_unicast)
584 mcast_to_ucast = false;
586 if (!mcast_to_ucast || dev->wireless_isolate)
589 system_bridge_set_multicast_to_unicast(dev, mcast_to_ucast ? "1" : "0");
590 system_bridge_set_hairpin_mode(dev, hairpin ? "1" : "0");
593 int system_bridge_addif(struct device *bridge, struct device *dev)
599 oldbr = system_get_bridge(dev->ifname, dev_buf, sizeof(dev_buf));
600 if (!oldbr || strcmp(oldbr, bridge->ifname) != 0)
601 ret = system_bridge_if(bridge->ifname, dev, SIOCBRADDIF, NULL);
604 system_bridge_set_wireless(bridge, dev);
606 if (dev->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
607 snprintf(buf, sizeof(buf), "%i", dev->settings.multicast_router);
608 system_bridge_set_multicast_router(dev, buf, false);
614 int system_bridge_delif(struct device *bridge, struct device *dev)
616 return system_bridge_if(bridge->ifname, dev, SIOCBRDELIF, NULL);
619 int system_if_resolve(struct device *dev)
622 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
623 if (!ioctl(sock_ioctl, SIOCGIFINDEX, &ifr))
624 return ifr.ifr_ifindex;
629 static int system_if_flags(const char *ifname, unsigned add, unsigned rem)
633 memset(&ifr, 0, sizeof(ifr));
634 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
635 ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr);
636 ifr.ifr_flags |= add;
637 ifr.ifr_flags &= ~rem;
638 return ioctl(sock_ioctl, SIOCSIFFLAGS, &ifr);
650 static bool check_ifaddr(struct nlmsghdr *hdr, int ifindex)
652 struct ifaddrmsg *ifa = NLMSG_DATA(hdr);
654 return ifa->ifa_index == ifindex;
657 static bool check_route(struct nlmsghdr *hdr, int ifindex)
659 struct rtmsg *r = NLMSG_DATA(hdr);
660 struct nlattr *tb[__RTA_MAX];
662 if (r->rtm_protocol == RTPROT_KERNEL &&
663 r->rtm_family == AF_INET6)
666 nlmsg_parse(hdr, sizeof(struct rtmsg), tb, __RTA_MAX - 1, NULL);
670 return *(int *)RTA_DATA(tb[RTA_OIF]) == ifindex;
673 static bool check_rule(struct nlmsghdr *hdr, int ifindex)
678 static int cb_clear_event(struct nl_msg *msg, void *arg)
680 struct clear_data *clr = arg;
681 struct nlmsghdr *hdr = nlmsg_hdr(msg);
682 bool (*cb)(struct nlmsghdr *, int ifindex);
688 if (hdr->nlmsg_type != RTM_NEWADDR)
695 if (hdr->nlmsg_type != RTM_NEWROUTE)
702 if (hdr->nlmsg_type != RTM_NEWRULE)
711 if (!cb(hdr, clr->dev ? clr->dev->ifindex : 0))
714 if (type == RTM_DELRULE)
715 D(SYSTEM, "Remove a rule\n");
717 D(SYSTEM, "Remove %s from device %s\n",
718 type == RTM_DELADDR ? "an address" : "a route",
720 memcpy(nlmsg_hdr(clr->msg), hdr, hdr->nlmsg_len);
721 hdr = nlmsg_hdr(clr->msg);
722 hdr->nlmsg_type = type;
723 hdr->nlmsg_flags = NLM_F_REQUEST;
725 nl_socket_disable_auto_ack(sock_rtnl);
726 nl_send_auto_complete(sock_rtnl, clr->msg);
727 nl_socket_enable_auto_ack(sock_rtnl);
733 cb_finish_event(struct nl_msg *msg, void *arg)
741 error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
744 *pending = err->error;
749 system_if_clear_entries(struct device *dev, int type, int af)
751 struct clear_data clr;
752 struct nl_cb *cb = nl_cb_alloc(NL_CB_DEFAULT);
755 .rtm_flags = RTM_F_CLONED,
757 int flags = NLM_F_DUMP;
766 clr.size = sizeof(struct rtgenmsg);
769 clr.size = sizeof(struct rtmsg);
778 clr.msg = nlmsg_alloc_simple(type, flags);
782 nlmsg_append(clr.msg, &rtm, clr.size, 0);
783 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, cb_clear_event, &clr);
784 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, cb_finish_event, &pending);
785 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &pending);
787 nl_send_auto_complete(sock_rtnl, clr.msg);
789 nl_recvmsgs(sock_rtnl, cb);
797 * Clear bridge (membership) state and bring down device
799 void system_if_clear_state(struct device *dev)
801 static char buf[256];
804 device_set_ifindex(dev, system_if_resolve(dev));
805 if (dev->external || !dev->ifindex)
808 system_if_flags(dev->ifname, 0, IFF_UP);
810 if (system_is_bridge(dev->ifname, buf, sizeof(buf))) {
811 D(SYSTEM, "Delete existing bridge named '%s'\n", dev->ifname);
812 system_bridge_delbr(dev);
816 bridge = system_get_bridge(dev->ifname, buf, sizeof(buf));
818 D(SYSTEM, "Remove device '%s' from bridge '%s'\n", dev->ifname, bridge);
819 system_bridge_if(bridge, dev, SIOCBRDELIF, NULL);
822 system_if_clear_entries(dev, RTM_GETROUTE, AF_INET);
823 system_if_clear_entries(dev, RTM_GETADDR, AF_INET);
824 system_if_clear_entries(dev, RTM_GETROUTE, AF_INET6);
825 system_if_clear_entries(dev, RTM_GETADDR, AF_INET6);
826 system_set_disable_ipv6(dev, "0");
829 static inline unsigned long
830 sec_to_jiffies(int val)
832 return (unsigned long) val * 100;
835 int system_bridge_addbr(struct device *bridge, struct bridge_config *cfg)
838 unsigned long args[4] = {};
840 if (ioctl(sock_ioctl, SIOCBRADDBR, bridge->ifname) < 0)
843 args[0] = BRCTL_SET_BRIDGE_STP_STATE;
844 args[1] = !!cfg->stp;
845 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
847 args[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY;
848 args[1] = sec_to_jiffies(cfg->forward_delay);
849 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
851 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
852 bridge->ifname, cfg->igmp_snoop ? "1" : "0");
854 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
855 bridge->ifname, cfg->multicast_querier ? "1" : "0");
857 snprintf(buf, sizeof(buf), "%i", cfg->hash_max);
858 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
859 bridge->ifname, buf);
861 if (bridge->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
862 snprintf(buf, sizeof(buf), "%i", bridge->settings.multicast_router);
863 system_bridge_set_multicast_router(bridge, buf, true);
866 args[0] = BRCTL_SET_BRIDGE_PRIORITY;
867 args[1] = cfg->priority;
868 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
870 if (cfg->flags & BRIDGE_OPT_AGEING_TIME) {
871 args[0] = BRCTL_SET_AGEING_TIME;
872 args[1] = sec_to_jiffies(cfg->ageing_time);
873 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
876 if (cfg->flags & BRIDGE_OPT_HELLO_TIME) {
877 args[0] = BRCTL_SET_BRIDGE_HELLO_TIME;
878 args[1] = sec_to_jiffies(cfg->hello_time);
879 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
882 if (cfg->flags & BRIDGE_OPT_MAX_AGE) {
883 args[0] = BRCTL_SET_BRIDGE_MAX_AGE;
884 args[1] = sec_to_jiffies(cfg->max_age);
885 system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
891 int system_macvlan_add(struct device *macvlan, struct device *dev, struct macvlan_config *cfg)
894 struct nlattr *linkinfo, *data;
895 struct ifinfomsg iim = { .ifi_family = AF_UNSPEC, };
897 static const struct {
899 enum macvlan_mode val;
901 { "private", MACVLAN_MODE_PRIVATE },
902 { "vepa", MACVLAN_MODE_VEPA },
903 { "bridge", MACVLAN_MODE_BRIDGE },
904 { "passthru", MACVLAN_MODE_PASSTHRU },
907 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
912 nlmsg_append(msg, &iim, sizeof(iim), 0);
914 if (cfg->flags & MACVLAN_OPT_MACADDR)
915 nla_put(msg, IFLA_ADDRESS, sizeof(cfg->macaddr), cfg->macaddr);
916 nla_put_string(msg, IFLA_IFNAME, macvlan->ifname);
917 nla_put_u32(msg, IFLA_LINK, dev->ifindex);
919 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
920 goto nla_put_failure;
922 nla_put_string(msg, IFLA_INFO_KIND, "macvlan");
924 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
925 goto nla_put_failure;
928 for (i = 0; i < ARRAY_SIZE(modes); i++) {
929 if (strcmp(cfg->mode, modes[i].name) != 0)
932 nla_put_u32(msg, IFLA_MACVLAN_MODE, modes[i].val);
937 nla_nest_end(msg, data);
938 nla_nest_end(msg, linkinfo);
940 rv = system_rtnl_call(msg);
942 D(SYSTEM, "Error adding macvlan '%s' over '%s': %d\n", macvlan->ifname, dev->ifname, rv);
951 static int system_link_del(const char *ifname)
954 struct ifinfomsg iim = {
955 .ifi_family = AF_UNSPEC,
959 msg = nlmsg_alloc_simple(RTM_DELLINK, NLM_F_REQUEST);
964 nlmsg_append(msg, &iim, sizeof(iim), 0);
965 nla_put_string(msg, IFLA_IFNAME, ifname);
966 return system_rtnl_call(msg);
969 int system_macvlan_del(struct device *macvlan)
971 return system_link_del(macvlan->ifname);
974 static int system_vlan(struct device *dev, int id)
976 struct vlan_ioctl_args ifr = {
977 .cmd = SET_VLAN_NAME_TYPE_CMD,
978 .u.name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD,
981 ioctl(sock_ioctl, SIOCSIFVLAN, &ifr);
984 ifr.cmd = DEL_VLAN_CMD;
987 ifr.cmd = ADD_VLAN_CMD;
990 strncpy(ifr.device1, dev->ifname, sizeof(ifr.device1));
991 return ioctl(sock_ioctl, SIOCSIFVLAN, &ifr);
994 int system_vlan_add(struct device *dev, int id)
996 return system_vlan(dev, id);
999 int system_vlan_del(struct device *dev)
1001 return system_vlan(dev, -1);
1004 int system_vlandev_add(struct device *vlandev, struct device *dev, struct vlandev_config *cfg)
1007 struct nlattr *linkinfo, *data;
1008 struct ifinfomsg iim = { .ifi_family = AF_UNSPEC };
1011 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
1016 nlmsg_append(msg, &iim, sizeof(iim), 0);
1017 nla_put_string(msg, IFLA_IFNAME, vlandev->ifname);
1018 nla_put_u32(msg, IFLA_LINK, dev->ifindex);
1020 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
1021 goto nla_put_failure;
1023 nla_put_string(msg, IFLA_INFO_KIND, "vlan");
1025 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
1026 goto nla_put_failure;
1028 nla_put_u16(msg, IFLA_VLAN_ID, cfg->vid);
1030 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1031 nla_put_u16(msg, IFLA_VLAN_PROTOCOL, htons(cfg->proto));
1033 if(cfg->proto == VLAN_PROTO_8021AD)
1034 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);
1037 nla_nest_end(msg, data);
1038 nla_nest_end(msg, linkinfo);
1040 rv = system_rtnl_call(msg);
1042 D(SYSTEM, "Error adding vlandev '%s' over '%s': %d\n", vlandev->ifname, dev->ifname, rv);
1051 int system_vlandev_del(struct device *vlandev)
1053 return system_link_del(vlandev->ifname);
1057 system_if_get_settings(struct device *dev, struct device_settings *s)
1062 memset(&ifr, 0, sizeof(ifr));
1063 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
1065 if (ioctl(sock_ioctl, SIOCGIFMTU, &ifr) == 0) {
1066 s->mtu = ifr.ifr_mtu;
1067 s->flags |= DEV_OPT_MTU;
1070 s->mtu6 = system_update_ipv6_mtu(dev, 0);
1072 s->flags |= DEV_OPT_MTU6;
1074 if (ioctl(sock_ioctl, SIOCGIFTXQLEN, &ifr) == 0) {
1075 s->txqueuelen = ifr.ifr_qlen;
1076 s->flags |= DEV_OPT_TXQUEUELEN;
1079 if (ioctl(sock_ioctl, SIOCGIFHWADDR, &ifr) == 0) {
1080 memcpy(s->macaddr, &ifr.ifr_hwaddr.sa_data, sizeof(s->macaddr));
1081 s->flags |= DEV_OPT_MACADDR;
1084 if (!system_get_disable_ipv6(dev, buf, sizeof(buf))) {
1085 s->ipv6 = !strtoul(buf, NULL, 0);
1086 s->flags |= DEV_OPT_IPV6;
1089 if (ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr) == 0) {
1090 s->promisc = ifr.ifr_flags & IFF_PROMISC;
1091 s->flags |= DEV_OPT_PROMISC;
1094 if (!system_get_rpfilter(dev, buf, sizeof(buf))) {
1095 s->rpfilter = strtoul(buf, NULL, 0);
1096 s->flags |= DEV_OPT_RPFILTER;
1099 if (!system_get_acceptlocal(dev, buf, sizeof(buf))) {
1100 s->acceptlocal = strtoul(buf, NULL, 0);
1101 s->flags |= DEV_OPT_ACCEPTLOCAL;
1104 if (!system_get_igmpversion(dev, buf, sizeof(buf))) {
1105 s->igmpversion = strtoul(buf, NULL, 0);
1106 s->flags |= DEV_OPT_IGMPVERSION;
1109 if (!system_get_mldversion(dev, buf, sizeof(buf))) {
1110 s->mldversion = strtoul(buf, NULL, 0);
1111 s->flags |= DEV_OPT_MLDVERSION;
1114 if (!system_get_neigh4reachabletime(dev, buf, sizeof(buf))) {
1115 s->neigh4reachabletime = strtoul(buf, NULL, 0);
1116 s->flags |= DEV_OPT_NEIGHREACHABLETIME;
1119 if (!system_get_neigh6reachabletime(dev, buf, sizeof(buf))) {
1120 s->neigh6reachabletime = strtoul(buf, NULL, 0);
1121 s->flags |= DEV_OPT_NEIGHREACHABLETIME;
1124 if (!system_get_dadtransmits(dev, buf, sizeof(buf))) {
1125 s->dadtransmits = strtoul(buf, NULL, 0);
1126 s->flags |= DEV_OPT_DADTRANSMITS;
1131 system_if_set_rps_xps_val(const char *path, int val)
1137 if (glob(path, 0, NULL, &gl))
1140 snprintf(val_buf, sizeof(val_buf), "%x", val);
1141 for (i = 0; i < gl.gl_pathc; i++)
1142 system_set_sysctl(gl.gl_pathv[i], val_buf);
1148 system_if_apply_rps_xps(struct device *dev, struct device_settings *s)
1150 long n_cpus = sysconf(_SC_NPROCESSORS_ONLN);
1156 val = (1 << n_cpus) - 1;
1157 snprintf(dev_buf, sizeof(dev_buf), "/sys/class/net/%s/queues/*/rps_cpus", dev->ifname);
1158 system_if_set_rps_xps_val(dev_buf, s->rps ? val : 0);
1160 snprintf(dev_buf, sizeof(dev_buf), "/sys/class/net/%s/queues/*/xps_cpus", dev->ifname);
1161 system_if_set_rps_xps_val(dev_buf, s->xps ? val : 0);
1165 system_if_apply_settings(struct device *dev, struct device_settings *s, unsigned int apply_mask)
1170 memset(&ifr, 0, sizeof(ifr));
1171 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
1172 if (s->flags & DEV_OPT_MTU & apply_mask) {
1173 ifr.ifr_mtu = s->mtu;
1174 if (ioctl(sock_ioctl, SIOCSIFMTU, &ifr) < 0)
1175 s->flags &= ~DEV_OPT_MTU;
1177 if (s->flags & DEV_OPT_MTU6 & apply_mask) {
1178 system_update_ipv6_mtu(dev, s->mtu6);
1180 if (s->flags & DEV_OPT_TXQUEUELEN & apply_mask) {
1181 ifr.ifr_qlen = s->txqueuelen;
1182 if (ioctl(sock_ioctl, SIOCSIFTXQLEN, &ifr) < 0)
1183 s->flags &= ~DEV_OPT_TXQUEUELEN;
1185 if ((s->flags & DEV_OPT_MACADDR & apply_mask) && !dev->external) {
1186 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
1187 memcpy(&ifr.ifr_hwaddr.sa_data, s->macaddr, sizeof(s->macaddr));
1188 if (ioctl(sock_ioctl, SIOCSIFHWADDR, &ifr) < 0)
1189 s->flags &= ~DEV_OPT_MACADDR;
1191 if (s->flags & DEV_OPT_IPV6 & apply_mask)
1192 system_set_disable_ipv6(dev, s->ipv6 ? "0" : "1");
1193 if (s->flags & DEV_OPT_PROMISC & apply_mask) {
1194 if (system_if_flags(dev->ifname, s->promisc ? IFF_PROMISC : 0,
1195 !s->promisc ? IFF_PROMISC : 0) < 0)
1196 s->flags &= ~DEV_OPT_PROMISC;
1198 if (s->flags & DEV_OPT_RPFILTER & apply_mask) {
1199 snprintf(buf, sizeof(buf), "%d", s->rpfilter);
1200 system_set_rpfilter(dev, buf);
1202 if (s->flags & DEV_OPT_ACCEPTLOCAL & apply_mask)
1203 system_set_acceptlocal(dev, s->acceptlocal ? "1" : "0");
1204 if (s->flags & DEV_OPT_IGMPVERSION & apply_mask) {
1205 snprintf(buf, sizeof(buf), "%d", s->igmpversion);
1206 system_set_igmpversion(dev, buf);
1208 if (s->flags & DEV_OPT_MLDVERSION & apply_mask) {
1209 snprintf(buf, sizeof(buf), "%d", s->mldversion);
1210 system_set_mldversion(dev, buf);
1212 if (s->flags & DEV_OPT_NEIGHREACHABLETIME & apply_mask) {
1213 snprintf(buf, sizeof(buf), "%d", s->neigh4reachabletime);
1214 system_set_neigh4reachabletime(dev, buf);
1215 snprintf(buf, sizeof(buf), "%d", s->neigh6reachabletime);
1216 system_set_neigh6reachabletime(dev, buf);
1218 if (s->flags & DEV_OPT_DADTRANSMITS & apply_mask) {
1219 snprintf(buf, sizeof(buf), "%d", s->dadtransmits);
1220 system_set_dadtransmits(dev, buf);
1223 system_if_apply_rps_xps(dev, s);
1226 int system_if_up(struct device *dev)
1228 system_if_get_settings(dev, &dev->orig_settings);
1229 /* Only keep orig settings based on what needs to be set */
1230 dev->orig_settings.valid_flags = dev->orig_settings.flags;
1231 dev->orig_settings.flags &= dev->settings.flags;
1232 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
1233 return system_if_flags(dev->ifname, IFF_UP, 0);
1236 int system_if_down(struct device *dev)
1238 int ret = system_if_flags(dev->ifname, 0, IFF_UP);
1239 system_if_apply_settings(dev, &dev->orig_settings, dev->orig_settings.flags);
1243 struct if_check_data {
1249 #ifndef IFF_LOWER_UP
1250 #define IFF_LOWER_UP 0x10000
1253 static int cb_if_check_valid(struct nl_msg *msg, void *arg)
1255 struct nlmsghdr *nh = nlmsg_hdr(msg);
1256 struct ifinfomsg *ifi = NLMSG_DATA(nh);
1257 struct if_check_data *chk = (struct if_check_data *)arg;
1259 if (nh->nlmsg_type != RTM_NEWLINK)
1262 device_set_present(chk->dev, ifi->ifi_index > 0 ? true : false);
1263 device_set_link(chk->dev, ifi->ifi_flags & IFF_LOWER_UP ? true : false);
1268 static int cb_if_check_ack(struct nl_msg *msg, void *arg)
1270 struct if_check_data *chk = (struct if_check_data *)arg;
1275 static int cb_if_check_error(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
1277 struct if_check_data *chk = (struct if_check_data *)arg;
1279 device_set_present(chk->dev, false);
1280 device_set_link(chk->dev, false);
1281 chk->pending = err->error;
1286 int system_if_check(struct device *dev)
1288 struct nl_cb *cb = nl_cb_alloc(NL_CB_DEFAULT);
1290 struct ifinfomsg ifi = {
1291 .ifi_family = AF_UNSPEC,
1294 struct if_check_data chk = {
1300 msg = nlmsg_alloc_simple(RTM_GETLINK, 0);
1304 if (nlmsg_append(msg, &ifi, sizeof(ifi), 0) ||
1305 nla_put_string(msg, IFLA_IFNAME, dev->ifname))
1308 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, cb_if_check_valid, &chk);
1309 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, cb_if_check_ack, &chk);
1310 nl_cb_err(cb, NL_CB_CUSTOM, cb_if_check_error, &chk);
1312 nl_send_auto_complete(sock_rtnl, msg);
1313 while (chk.pending > 0)
1314 nl_recvmsgs(sock_rtnl, cb);
1326 system_if_get_parent(struct device *dev)
1328 char buf[64], *devname;
1329 int ifindex, iflink, len;
1332 snprintf(buf, sizeof(buf), "/sys/class/net/%s/iflink", dev->ifname);
1333 f = fopen(buf, "r");
1337 len = fread(buf, 1, sizeof(buf) - 1, f);
1344 iflink = strtoul(buf, NULL, 0);
1345 ifindex = system_if_resolve(dev);
1346 if (!iflink || iflink == ifindex)
1349 devname = if_indextoname(iflink, buf);
1353 return device_get(devname, true);
1357 read_string_file(int dir_fd, const char *file, char *buf, int len)
1363 fd = openat(dir_fd, file, O_RDONLY);
1368 len = read(fd, buf, len - 1);
1372 } else if (len > 0) {
1375 c = strchr(buf, '\n');
1388 read_uint64_file(int dir_fd, const char *file, uint64_t *val)
1393 ret = read_string_file(dir_fd, file, buf, sizeof(buf));
1395 *val = strtoull(buf, NULL, 0);
1400 /* Assume advertised flags == supported flags */
1401 static const struct {
1404 } ethtool_link_modes[] = {
1405 { ADVERTISED_10baseT_Half, "10H" },
1406 { ADVERTISED_10baseT_Full, "10F" },
1407 { ADVERTISED_100baseT_Half, "100H" },
1408 { ADVERTISED_100baseT_Full, "100F" },
1409 { ADVERTISED_1000baseT_Half, "1000H" },
1410 { ADVERTISED_1000baseT_Full, "1000F" },
1413 static void system_add_link_modes(struct blob_buf *b, __u32 mask)
1416 for (i = 0; i < ARRAY_SIZE(ethtool_link_modes); i++) {
1417 if (mask & ethtool_link_modes[i].mask)
1418 blobmsg_add_string(b, NULL, ethtool_link_modes[i].name);
1423 system_if_force_external(const char *ifname)
1428 snprintf(buf, sizeof(buf), "/sys/class/net/%s/phy80211", ifname);
1429 return stat(buf, &s) == 0;
1433 system_if_dump_info(struct device *dev, struct blob_buf *b)
1435 struct ethtool_cmd ecmd;
1441 snprintf(buf, sizeof(buf), "/sys/class/net/%s", dev->ifname);
1442 dir_fd = open(buf, O_DIRECTORY);
1444 memset(&ecmd, 0, sizeof(ecmd));
1445 memset(&ifr, 0, sizeof(ifr));
1446 strcpy(ifr.ifr_name, dev->ifname);
1447 ifr.ifr_data = (caddr_t) &ecmd;
1448 ecmd.cmd = ETHTOOL_GSET;
1450 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) == 0) {
1451 c = blobmsg_open_array(b, "link-advertising");
1452 system_add_link_modes(b, ecmd.advertising);
1453 blobmsg_close_array(b, c);
1455 c = blobmsg_open_array(b, "link-supported");
1456 system_add_link_modes(b, ecmd.supported);
1457 blobmsg_close_array(b, c);
1459 s = blobmsg_alloc_string_buffer(b, "speed", 8);
1460 snprintf(s, 8, "%d%c", ethtool_cmd_speed(&ecmd),
1461 ecmd.duplex == DUPLEX_HALF ? 'H' : 'F');
1462 blobmsg_add_string_buffer(b);
1470 system_if_dump_stats(struct device *dev, struct blob_buf *b)
1472 const char *const counters[] = {
1473 "collisions", "rx_frame_errors", "tx_compressed",
1474 "multicast", "rx_length_errors", "tx_dropped",
1475 "rx_bytes", "rx_missed_errors", "tx_errors",
1476 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1477 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1478 "rx_dropped", "tx_aborted_errors", "tx_packets",
1479 "rx_errors", "tx_bytes", "tx_window_errors",
1480 "rx_fifo_errors", "tx_carrier_errors",
1487 snprintf(buf, sizeof(buf), "/sys/class/net/%s/statistics", dev->ifname);
1488 stats_dir = open(buf, O_DIRECTORY);
1492 for (i = 0; i < ARRAY_SIZE(counters); i++)
1493 if (read_uint64_file(stats_dir, counters[i], &val))
1494 blobmsg_add_u64(b, counters[i], val);
1500 static int system_addr(struct device *dev, struct device_addr *addr, int cmd)
1502 bool v4 = ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET4);
1503 int alen = v4 ? 4 : 16;
1504 unsigned int flags = 0;
1505 struct ifaddrmsg ifa = {
1506 .ifa_family = (alen == 4) ? AF_INET : AF_INET6,
1507 .ifa_prefixlen = addr->mask,
1508 .ifa_index = dev->ifindex,
1512 if (cmd == RTM_NEWADDR)
1513 flags |= NLM_F_CREATE | NLM_F_REPLACE;
1515 msg = nlmsg_alloc_simple(cmd, flags);
1519 nlmsg_append(msg, &ifa, sizeof(ifa), 0);
1520 nla_put(msg, IFA_LOCAL, alen, &addr->addr);
1522 if (addr->broadcast)
1523 nla_put_u32(msg, IFA_BROADCAST, addr->broadcast);
1524 if (addr->point_to_point)
1525 nla_put_u32(msg, IFA_ADDRESS, addr->point_to_point);
1527 time_t now = system_get_rtime();
1528 struct ifa_cacheinfo cinfo = {0xffffffffU, 0xffffffffU, 0, 0};
1530 if (addr->preferred_until) {
1531 int64_t preferred = addr->preferred_until - now;
1534 else if (preferred > UINT32_MAX)
1535 preferred = UINT32_MAX;
1537 cinfo.ifa_prefered = preferred;
1540 if (addr->valid_until) {
1541 int64_t valid = addr->valid_until - now;
1546 else if (valid > UINT32_MAX)
1549 cinfo.ifa_valid = valid;
1552 nla_put(msg, IFA_CACHEINFO, sizeof(cinfo), &cinfo);
1554 if (cmd == RTM_NEWADDR && (addr->flags & DEVADDR_OFFLINK))
1555 nla_put_u32(msg, IFA_FLAGS, IFA_F_NOPREFIXROUTE);
1558 return system_rtnl_call(msg);
1561 int system_add_address(struct device *dev, struct device_addr *addr)
1563 return system_addr(dev, addr, RTM_NEWADDR);
1566 int system_del_address(struct device *dev, struct device_addr *addr)
1568 return system_addr(dev, addr, RTM_DELADDR);
1571 static int system_rt(struct device *dev, struct device_route *route, int cmd)
1573 int alen = ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET4) ? 4 : 16;
1575 unsigned int flags = 0;
1578 have_gw = !!route->nexthop.in.s_addr;
1580 have_gw = route->nexthop.in6.s6_addr32[0] ||
1581 route->nexthop.in6.s6_addr32[1] ||
1582 route->nexthop.in6.s6_addr32[2] ||
1583 route->nexthop.in6.s6_addr32[3];
1585 unsigned int table = (route->flags & (DEVROUTE_TABLE | DEVROUTE_SRCTABLE))
1586 ? route->table : RT_TABLE_MAIN;
1588 struct rtmsg rtm = {
1589 .rtm_family = (alen == 4) ? AF_INET : AF_INET6,
1590 .rtm_dst_len = route->mask,
1591 .rtm_src_len = route->sourcemask,
1592 .rtm_table = (table < 256) ? table : RT_TABLE_UNSPEC,
1593 .rtm_protocol = (route->flags & DEVADDR_KERNEL) ? RTPROT_KERNEL : RTPROT_STATIC,
1594 .rtm_scope = RT_SCOPE_NOWHERE,
1595 .rtm_type = (cmd == RTM_DELROUTE) ? 0: RTN_UNICAST,
1596 .rtm_flags = (route->flags & DEVROUTE_ONLINK) ? RTNH_F_ONLINK : 0,
1600 if (cmd == RTM_NEWROUTE) {
1601 flags |= NLM_F_CREATE | NLM_F_REPLACE;
1603 if (!dev) { // Add null-route
1604 rtm.rtm_scope = RT_SCOPE_UNIVERSE;
1605 rtm.rtm_type = RTN_UNREACHABLE;
1608 rtm.rtm_scope = (have_gw) ? RT_SCOPE_UNIVERSE : RT_SCOPE_LINK;
1611 if (route->flags & DEVROUTE_TYPE) {
1612 rtm.rtm_type = route->type;
1613 if (!(route->flags & (DEVROUTE_TABLE | DEVROUTE_SRCTABLE))) {
1614 if (rtm.rtm_type == RTN_LOCAL || rtm.rtm_type == RTN_BROADCAST ||
1615 rtm.rtm_type == RTN_NAT || rtm.rtm_type == RTN_ANYCAST)
1616 rtm.rtm_table = RT_TABLE_LOCAL;
1619 if (rtm.rtm_type == RTN_LOCAL || rtm.rtm_type == RTN_NAT) {
1620 rtm.rtm_scope = RT_SCOPE_HOST;
1621 } else if (rtm.rtm_type == RTN_BROADCAST || rtm.rtm_type == RTN_MULTICAST ||
1622 rtm.rtm_type == RTN_ANYCAST) {
1623 rtm.rtm_scope = RT_SCOPE_LINK;
1624 } else if (rtm.rtm_type == RTN_BLACKHOLE || rtm.rtm_type == RTN_UNREACHABLE ||
1625 rtm.rtm_type == RTN_PROHIBIT || rtm.rtm_type == RTN_FAILED_POLICY) {
1626 rtm.rtm_scope = RT_SCOPE_UNIVERSE;
1631 msg = nlmsg_alloc_simple(cmd, flags);
1635 nlmsg_append(msg, &rtm, sizeof(rtm), 0);
1638 nla_put(msg, RTA_DST, alen, &route->addr);
1640 if (route->sourcemask) {
1641 if (rtm.rtm_family == AF_INET)
1642 nla_put(msg, RTA_PREFSRC, alen, &route->source);
1644 nla_put(msg, RTA_SRC, alen, &route->source);
1647 if (route->metric > 0)
1648 nla_put_u32(msg, RTA_PRIORITY, route->metric);
1651 nla_put(msg, RTA_GATEWAY, alen, &route->nexthop);
1654 nla_put_u32(msg, RTA_OIF, dev->ifindex);
1657 nla_put_u32(msg, RTA_TABLE, table);
1659 if (route->flags & DEVROUTE_MTU) {
1660 struct nlattr *metrics;
1662 if (!(metrics = nla_nest_start(msg, RTA_METRICS)))
1663 goto nla_put_failure;
1665 nla_put_u32(msg, RTAX_MTU, route->mtu);
1667 nla_nest_end(msg, metrics);
1670 return system_rtnl_call(msg);
1677 int system_add_route(struct device *dev, struct device_route *route)
1679 return system_rt(dev, route, RTM_NEWROUTE);
1682 int system_del_route(struct device *dev, struct device_route *route)
1684 return system_rt(dev, route, RTM_DELROUTE);
1687 int system_flush_routes(void)
1689 const char *names[] = {
1690 "/proc/sys/net/ipv4/route/flush",
1691 "/proc/sys/net/ipv6/route/flush"
1695 for (i = 0; i < ARRAY_SIZE(names); i++) {
1696 fd = open(names[i], O_WRONLY);
1700 if (write(fd, "-1", 2)) {}
1706 bool system_resolve_rt_type(const char *type, unsigned int *id)
1708 return system_rtn_aton(type, id);
1711 bool system_resolve_rt_table(const char *name, unsigned int *id)
1715 unsigned int n, table = RT_TABLE_UNSPEC;
1717 /* first try to parse table as number */
1718 if ((n = strtoul(name, &e, 0)) > 0 && !*e)
1721 /* handle well known aliases */
1722 else if (!strcmp(name, "default"))
1723 table = RT_TABLE_DEFAULT;
1724 else if (!strcmp(name, "main"))
1725 table = RT_TABLE_MAIN;
1726 else if (!strcmp(name, "local"))
1727 table = RT_TABLE_LOCAL;
1728 else if (!strcmp(name, "prelocal"))
1729 table = RT_TABLE_PRELOCAL;
1731 /* try to look up name in /etc/iproute2/rt_tables */
1732 else if ((f = fopen("/etc/iproute2/rt_tables", "r")) != NULL)
1734 while (fgets(buf, sizeof(buf) - 1, f) != NULL)
1736 if ((e = strtok(buf, " \t\n")) == NULL || *e == '#')
1739 n = strtoul(e, NULL, 10);
1740 e = strtok(NULL, " \t\n");
1742 if (e && !strcmp(e, name))
1752 if (table == RT_TABLE_UNSPEC)
1759 bool system_is_default_rt_table(unsigned int id)
1761 return (id == RT_TABLE_MAIN);
1764 bool system_resolve_rpfilter(const char *filter, unsigned int *id)
1769 if (!strcmp(filter, "strict"))
1771 else if (!strcmp(filter, "loose"))
1774 n = strtoul(filter, &e, 0);
1775 if (*e || e == filter || n > 2)
1783 static int system_iprule(struct iprule *rule, int cmd)
1785 int alen = ((rule->flags & IPRULE_FAMILY) == IPRULE_INET4) ? 4 : 16;
1788 struct rtmsg rtm = {
1789 .rtm_family = (alen == 4) ? AF_INET : AF_INET6,
1790 .rtm_protocol = RTPROT_STATIC,
1791 .rtm_scope = RT_SCOPE_UNIVERSE,
1792 .rtm_table = RT_TABLE_UNSPEC,
1793 .rtm_type = RTN_UNSPEC,
1797 if (cmd == RTM_NEWRULE)
1798 rtm.rtm_type = RTN_UNICAST;
1801 rtm.rtm_flags |= FIB_RULE_INVERT;
1803 if (rule->flags & IPRULE_SRC)
1804 rtm.rtm_src_len = rule->src_mask;
1806 if (rule->flags & IPRULE_DEST)
1807 rtm.rtm_dst_len = rule->dest_mask;
1809 if (rule->flags & IPRULE_TOS)
1810 rtm.rtm_tos = rule->tos;
1812 if (rule->flags & IPRULE_LOOKUP) {
1813 if (rule->lookup < 256)
1814 rtm.rtm_table = rule->lookup;
1817 if (rule->flags & IPRULE_ACTION)
1818 rtm.rtm_type = rule->action;
1819 else if (rule->flags & IPRULE_GOTO)
1820 rtm.rtm_type = FR_ACT_GOTO;
1821 else if (!(rule->flags & (IPRULE_LOOKUP | IPRULE_ACTION | IPRULE_GOTO)))
1822 rtm.rtm_type = FR_ACT_NOP;
1824 msg = nlmsg_alloc_simple(cmd, NLM_F_REQUEST);
1829 nlmsg_append(msg, &rtm, sizeof(rtm), 0);
1831 if (rule->flags & IPRULE_IN)
1832 nla_put(msg, FRA_IFNAME, strlen(rule->in_dev) + 1, rule->in_dev);
1834 if (rule->flags & IPRULE_OUT)
1835 nla_put(msg, FRA_OIFNAME, strlen(rule->out_dev) + 1, rule->out_dev);
1837 if (rule->flags & IPRULE_SRC)
1838 nla_put(msg, FRA_SRC, alen, &rule->src_addr);
1840 if (rule->flags & IPRULE_DEST)
1841 nla_put(msg, FRA_DST, alen, &rule->dest_addr);
1843 if (rule->flags & IPRULE_PRIORITY)
1844 nla_put_u32(msg, FRA_PRIORITY, rule->priority);
1845 else if (cmd == RTM_NEWRULE)
1846 nla_put_u32(msg, FRA_PRIORITY, rule->order);
1848 if (rule->flags & IPRULE_FWMARK)
1849 nla_put_u32(msg, FRA_FWMARK, rule->fwmark);
1851 if (rule->flags & IPRULE_FWMASK)
1852 nla_put_u32(msg, FRA_FWMASK, rule->fwmask);
1854 if (rule->flags & IPRULE_LOOKUP) {
1855 if (rule->lookup >= 256)
1856 nla_put_u32(msg, FRA_TABLE, rule->lookup);
1859 if (rule->flags & IPRULE_GOTO)
1860 nla_put_u32(msg, FRA_GOTO, rule->gotoid);
1862 return system_rtnl_call(msg);
1865 int system_add_iprule(struct iprule *rule)
1867 return system_iprule(rule, RTM_NEWRULE);
1870 int system_del_iprule(struct iprule *rule)
1872 return system_iprule(rule, RTM_DELRULE);
1875 int system_flush_iprules(void)
1880 system_if_clear_entries(NULL, RTM_GETRULE, AF_INET);
1881 system_if_clear_entries(NULL, RTM_GETRULE, AF_INET6);
1883 memset(&rule, 0, sizeof(rule));
1886 rule.flags = IPRULE_INET4 | IPRULE_PRIORITY | IPRULE_LOOKUP;
1889 rule.lookup = RT_TABLE_PRELOCAL;
1890 rv |= system_iprule(&rule, RTM_NEWRULE);
1893 rule.lookup = RT_TABLE_LOCAL;
1894 rv |= system_iprule(&rule, RTM_NEWRULE);
1896 rule.priority = 32766;
1897 rule.lookup = RT_TABLE_MAIN;
1898 rv |= system_iprule(&rule, RTM_NEWRULE);
1900 rule.priority = 32767;
1901 rule.lookup = RT_TABLE_DEFAULT;
1902 rv |= system_iprule(&rule, RTM_NEWRULE);
1905 rule.flags = IPRULE_INET6 | IPRULE_PRIORITY | IPRULE_LOOKUP;
1908 rule.lookup = RT_TABLE_PRELOCAL;
1909 rv |= system_iprule(&rule, RTM_NEWRULE);
1912 rule.lookup = RT_TABLE_LOCAL;
1913 rv |= system_iprule(&rule, RTM_NEWRULE);
1915 rule.priority = 32766;
1916 rule.lookup = RT_TABLE_MAIN;
1917 rv |= system_iprule(&rule, RTM_NEWRULE);
1922 bool system_resolve_iprule_action(const char *action, unsigned int *id)
1924 return system_rtn_aton(action, id);
1927 time_t system_get_rtime(void)
1932 if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, &ts) == 0)
1935 if (gettimeofday(&tv, NULL) == 0)
1942 #define IP_DF 0x4000
1945 static int tunnel_ioctl(const char *name, int cmd, void *p)
1949 memset(&ifr, 0, sizeof(ifr));
1950 strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1951 ifr.ifr_ifru.ifru_data = p;
1952 return ioctl(sock_ioctl, cmd, &ifr);
1955 #ifdef IFLA_IPTUN_MAX
1956 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
1957 static int system_add_gre_tunnel(const char *name, const char *kind,
1958 const unsigned int link, struct blob_attr **tb, bool v6)
1961 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
1962 struct blob_attr *cur;
1963 uint32_t ikey = 0, okey = 0, flags = 0, flowinfo = 0;
1964 uint16_t iflags = 0, oflags = 0;
1966 int ret = 0, ttl = 64;
1968 nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
1972 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
1973 nla_put_string(nlm, IFLA_IFNAME, name);
1975 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
1981 nla_put_string(nlm, IFLA_INFO_KIND, kind);
1982 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
1989 nla_put_u32(nlm, IFLA_GRE_LINK, link);
1991 if ((cur = tb[TUNNEL_ATTR_TTL]))
1992 ttl = blobmsg_get_u32(cur);
1994 nla_put_u8(nlm, IFLA_GRE_TTL, ttl);
1996 if ((cur = tb[TUNNEL_ATTR_TOS])) {
1997 char *str = blobmsg_get_string(cur);
1998 if (strcmp(str, "inherit")) {
2001 if (!system_tos_aton(str, &uval)) {
2007 flowinfo |= htonl(uval << 20) & IP6_FLOWINFO_TCLASS;
2012 flags |= IP6_TNL_F_USE_ORIG_TCLASS;
2018 if ((cur = tb[TUNNEL_ATTR_INFO]) && (blobmsg_type(cur) == BLOBMSG_TYPE_STRING)) {
2019 uint8_t icsum, ocsum, iseqno, oseqno;
2020 if (sscanf(blobmsg_get_string(cur), "%u,%u,%hhu,%hhu,%hhu,%hhu",
2021 &ikey, &okey, &icsum, &ocsum, &iseqno, &oseqno) < 6) {
2046 struct in6_addr in6buf;
2047 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2048 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2052 nla_put(nlm, IFLA_GRE_LOCAL, sizeof(in6buf), &in6buf);
2055 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2056 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2060 nla_put(nlm, IFLA_GRE_REMOTE, sizeof(in6buf), &in6buf);
2062 nla_put_u8(nlm, IFLA_GRE_ENCAP_LIMIT, 4);
2065 nla_put_u32(nlm, IFLA_GRE_FLOWINFO, flowinfo);
2068 nla_put_u32(nlm, IFLA_GRE_FLAGS, flags);
2070 struct in_addr inbuf;
2073 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2074 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2078 nla_put(nlm, IFLA_GRE_LOCAL, sizeof(inbuf), &inbuf);
2081 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2082 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2086 nla_put(nlm, IFLA_GRE_REMOTE, sizeof(inbuf), &inbuf);
2088 if (IN_MULTICAST(ntohl(inbuf.s_addr))) {
2090 okey = inbuf.s_addr;
2095 ikey = inbuf.s_addr;
2101 if ((cur = tb[TUNNEL_ATTR_DF]))
2102 set_df = blobmsg_get_bool(cur);
2104 /* ttl !=0 and nopmtudisc are incompatible */
2105 if (ttl && !set_df) {
2110 nla_put_u8(nlm, IFLA_GRE_PMTUDISC, set_df ? 1 : 0);
2112 nla_put_u8(nlm, IFLA_GRE_TOS, tos);
2116 nla_put_u16(nlm, IFLA_GRE_OFLAGS, oflags);
2119 nla_put_u16(nlm, IFLA_GRE_IFLAGS, iflags);
2122 nla_put_u32(nlm, IFLA_GRE_OKEY, okey);
2125 nla_put_u32(nlm, IFLA_GRE_IKEY, ikey);
2127 nla_nest_end(nlm, infodata);
2128 nla_nest_end(nlm, linkinfo);
2130 return system_rtnl_call(nlm);
2139 static int system_add_vti_tunnel(const char *name, const char *kind,
2140 const unsigned int link, struct blob_attr **tb, bool v6)
2143 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
2144 struct blob_attr *cur;
2145 uint32_t ikey = 0, okey = 0;
2148 nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
2152 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
2153 nla_put_string(nlm, IFLA_IFNAME, name);
2155 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
2161 nla_put_string(nlm, IFLA_INFO_KIND, kind);
2162 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
2169 nla_put_u32(nlm, IFLA_VTI_LINK, link);
2171 if ((cur = tb[TUNNEL_ATTR_INFO]) && (blobmsg_type(cur) == BLOBMSG_TYPE_STRING)) {
2172 if (sscanf(blobmsg_get_string(cur), "%u,%u",
2173 &ikey, &okey) < 2) {
2180 struct in6_addr in6buf;
2181 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2182 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2186 nla_put(nlm, IFLA_VTI_LOCAL, sizeof(in6buf), &in6buf);
2189 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2190 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2194 nla_put(nlm, IFLA_VTI_REMOTE, sizeof(in6buf), &in6buf);
2198 struct in_addr inbuf;
2200 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2201 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2205 nla_put(nlm, IFLA_VTI_LOCAL, sizeof(inbuf), &inbuf);
2208 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2209 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
2213 nla_put(nlm, IFLA_VTI_REMOTE, sizeof(inbuf), &inbuf);
2219 nla_put_u32(nlm, IFLA_VTI_OKEY, okey);
2222 nla_put_u32(nlm, IFLA_VTI_IKEY, ikey);
2224 nla_nest_end(nlm, infodata);
2225 nla_nest_end(nlm, linkinfo);
2227 return system_rtnl_call(nlm);
2235 static int system_add_proto_tunnel(const char *name, const uint8_t proto, const unsigned int link, struct blob_attr **tb)
2237 struct blob_attr *cur;
2239 struct ip_tunnel_parm p = {
2248 if ((cur = tb[TUNNEL_ATTR_LOCAL]) &&
2249 inet_pton(AF_INET, blobmsg_data(cur), &p.iph.saddr) < 1)
2252 if ((cur = tb[TUNNEL_ATTR_REMOTE]) &&
2253 inet_pton(AF_INET, blobmsg_data(cur), &p.iph.daddr) < 1)
2256 if ((cur = tb[TUNNEL_ATTR_DF]))
2257 set_df = blobmsg_get_bool(cur);
2259 if ((cur = tb[TUNNEL_ATTR_TTL]))
2260 p.iph.ttl = blobmsg_get_u32(cur);
2262 if ((cur = tb[TUNNEL_ATTR_TOS])) {
2263 char *str = blobmsg_get_string(cur);
2264 if (strcmp(str, "inherit")) {
2267 if (!system_tos_aton(str, &uval))
2275 p.iph.frag_off = set_df ? htons(IP_DF) : 0;
2276 /* ttl !=0 and nopmtudisc are incompatible */
2277 if (p.iph.ttl && p.iph.frag_off == 0)
2280 strncpy(p.name, name, sizeof(p.name));
2282 switch (p.iph.protocol) {
2284 return tunnel_ioctl("tunl0", SIOCADDTUNNEL, &p);
2286 return tunnel_ioctl("sit0", SIOCADDTUNNEL, &p);
2293 static int __system_del_ip_tunnel(const char *name, struct blob_attr **tb)
2295 struct blob_attr *cur;
2298 if (!(cur = tb[TUNNEL_ATTR_TYPE]))
2300 str = blobmsg_data(cur);
2302 if (!strcmp(str, "greip") || !strcmp(str, "gretapip") ||
2303 !strcmp(str, "greip6") || !strcmp(str, "gretapip6") ||
2304 !strcmp(str, "vtiip") || !strcmp(str, "vtiip6"))
2305 return system_link_del(name);
2307 return tunnel_ioctl(name, SIOCDELTUNNEL, NULL);
2310 int system_del_ip_tunnel(const char *name, struct blob_attr *attr)
2312 struct blob_attr *tb[__TUNNEL_ATTR_MAX];
2314 blobmsg_parse(tunnel_attr_list.params, __TUNNEL_ATTR_MAX, tb,
2315 blob_data(attr), blob_len(attr));
2317 return __system_del_ip_tunnel(name, tb);
2320 int system_update_ipv6_mtu(struct device *dev, int mtu)
2324 snprintf(buf, sizeof(buf), "/proc/sys/net/ipv6/conf/%s/mtu",
2327 int fd = open(buf, O_RDWR);
2330 ssize_t len = read(fd, buf, sizeof(buf) - 1);
2337 if (write(fd, buf, snprintf(buf, sizeof(buf), "%i", mtu)) > 0)
2346 int system_add_ip_tunnel(const char *name, struct blob_attr *attr)
2348 struct blob_attr *tb[__TUNNEL_ATTR_MAX];
2349 struct blob_attr *cur;
2352 blobmsg_parse(tunnel_attr_list.params, __TUNNEL_ATTR_MAX, tb,
2353 blob_data(attr), blob_len(attr));
2355 __system_del_ip_tunnel(name, tb);
2357 if (!(cur = tb[TUNNEL_ATTR_TYPE]))
2359 str = blobmsg_data(cur);
2361 unsigned int ttl = 0;
2362 if ((cur = tb[TUNNEL_ATTR_TTL])) {
2363 ttl = blobmsg_get_u32(cur);
2368 unsigned int link = 0;
2369 if ((cur = tb[TUNNEL_ATTR_LINK])) {
2370 struct interface *iface = vlist_find(&interfaces, blobmsg_data(cur), iface, node);
2374 if (iface->l3_dev.dev)
2375 link = iface->l3_dev.dev->ifindex;
2378 if (!strcmp(str, "sit")) {
2379 if (system_add_proto_tunnel(name, IPPROTO_IPV6, link, tb) < 0)
2383 if ((cur = tb[TUNNEL_ATTR_6RD_PREFIX])) {
2385 struct ip_tunnel_6rd p6;
2387 memset(&p6, 0, sizeof(p6));
2389 if (!parse_ip_and_netmask(AF_INET6, blobmsg_data(cur),
2390 &p6.prefix, &mask) || mask > 128)
2392 p6.prefixlen = mask;
2394 if ((cur = tb[TUNNEL_ATTR_6RD_RELAY_PREFIX])) {
2395 if (!parse_ip_and_netmask(AF_INET, blobmsg_data(cur),
2396 &p6.relay_prefix, &mask) || mask > 32)
2398 p6.relay_prefixlen = mask;
2401 if (tunnel_ioctl(name, SIOCADD6RD, &p6) < 0) {
2402 __system_del_ip_tunnel(name, tb);
2407 #ifdef IFLA_IPTUN_MAX
2408 } else if (!strcmp(str, "ipip6")) {
2409 struct nl_msg *nlm = nlmsg_alloc_simple(RTM_NEWLINK,
2410 NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
2411 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC };
2417 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
2418 nla_put_string(nlm, IFLA_IFNAME, name);
2421 nla_put_u32(nlm, IFLA_LINK, link);
2423 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
2428 nla_put_string(nlm, IFLA_INFO_KIND, "ip6tnl");
2429 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
2436 nla_put_u32(nlm, IFLA_IPTUN_LINK, link);
2438 nla_put_u8(nlm, IFLA_IPTUN_PROTO, IPPROTO_IPIP);
2439 nla_put_u8(nlm, IFLA_IPTUN_TTL, (ttl) ? ttl : 64);
2440 nla_put_u8(nlm, IFLA_IPTUN_ENCAP_LIMIT, 4);
2442 struct in6_addr in6buf;
2443 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
2444 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2448 nla_put(nlm, IFLA_IPTUN_LOCAL, sizeof(in6buf), &in6buf);
2451 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
2452 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
2456 nla_put(nlm, IFLA_IPTUN_REMOTE, sizeof(in6buf), &in6buf);
2459 #ifdef IFLA_IPTUN_FMR_MAX
2460 if ((cur = tb[TUNNEL_ATTR_FMRS])) {
2461 struct nlattr *fmrs = nla_nest_start(nlm, IFLA_IPTUN_FMRS);
2463 struct blob_attr *fmr;
2464 unsigned rem, fmrcnt = 0;
2465 blobmsg_for_each_attr(fmr, cur, rem) {
2466 if (blobmsg_type(fmr) != BLOBMSG_TYPE_STRING)
2469 unsigned ip4len, ip6len, ealen, offset = 6;
2473 if (sscanf(blobmsg_get_string(fmr), "%47[^/]/%u,%15[^/]/%u,%u,%u",
2474 ip6buf, &ip6len, ip4buf, &ip4len, &ealen, &offset) < 5) {
2479 struct in6_addr ip6prefix;
2480 struct in_addr ip4prefix;
2481 if (inet_pton(AF_INET6, ip6buf, &ip6prefix) != 1 ||
2482 inet_pton(AF_INET, ip4buf, &ip4prefix) != 1) {
2487 struct nlattr *rule = nla_nest_start(nlm, ++fmrcnt);
2489 nla_put(nlm, IFLA_IPTUN_FMR_IP6_PREFIX, sizeof(ip6prefix), &ip6prefix);
2490 nla_put(nlm, IFLA_IPTUN_FMR_IP4_PREFIX, sizeof(ip4prefix), &ip4prefix);
2491 nla_put_u8(nlm, IFLA_IPTUN_FMR_IP6_PREFIX_LEN, ip6len);
2492 nla_put_u8(nlm, IFLA_IPTUN_FMR_IP4_PREFIX_LEN, ip4len);
2493 nla_put_u8(nlm, IFLA_IPTUN_FMR_EA_LEN, ealen);
2494 nla_put_u8(nlm, IFLA_IPTUN_FMR_OFFSET, offset);
2496 nla_nest_end(nlm, rule);
2499 nla_nest_end(nlm, fmrs);
2503 nla_nest_end(nlm, infodata);
2504 nla_nest_end(nlm, linkinfo);
2506 return system_rtnl_call(nlm);
2510 } else if (!strcmp(str, "greip")) {
2511 return system_add_gre_tunnel(name, "gre", link, tb, false);
2512 } else if (!strcmp(str, "gretapip")) {
2513 return system_add_gre_tunnel(name, "gretap", link, tb, false);
2514 } else if (!strcmp(str, "greip6")) {
2515 return system_add_gre_tunnel(name, "ip6gre", link, tb, true);
2516 } else if (!strcmp(str, "gretapip6")) {
2517 return system_add_gre_tunnel(name, "ip6gretap", link, tb, true);
2519 } else if (!strcmp(str, "vtiip")) {
2520 return system_add_vti_tunnel(name, "vti", link, tb, false);
2521 } else if (!strcmp(str, "vtiip6")) {
2522 return system_add_vti_tunnel(name, "vti6", link, tb, true);
2525 } else if (!strcmp(str, "ipip")) {
2526 return system_add_proto_tunnel(name, IPPROTO_IPIP, link, tb);