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>
8 * Copyright (C) 2018 Hans Dedecker <dedeckeh@gmail.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2
12 * as published by the Free Software Foundation
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
21 #include <sys/socket.h>
22 #include <sys/ioctl.h>
24 #include <sys/syscall.h>
27 #include <net/if_arp.h>
30 #include <arpa/inet.h>
31 #include <netinet/ether.h>
32 #include <netinet/in.h>
34 #include <linux/rtnetlink.h>
35 #include <linux/neighbour.h>
36 #include <linux/sockios.h>
38 #include <linux/if_addr.h>
39 #include <linux/if_link.h>
40 #include <linux/if_vlan.h>
41 #include <linux/if_bridge.h>
42 #include <linux/if_tunnel.h>
43 #include <linux/ip6_tunnel.h>
44 #include <linux/ethtool.h>
45 #include <linux/fib_rules.h>
46 #include <linux/veth.h>
47 #include <linux/version.h>
51 #ifndef RTN_FAILED_POLICY
52 #define RTN_FAILED_POLICY 12
55 #ifndef IFA_F_NOPREFIXROUTE
56 #define IFA_F_NOPREFIXROUTE 0x200
60 #define IFA_FLAGS (IFA_MULTICAST + 1)
69 #include <netlink/msg.h>
70 #include <netlink/attr.h>
71 #include <netlink/socket.h>
72 #include <libubox/uloop.h>
80 struct uloop_fd uloop
;
85 static int sock_ioctl
= -1;
86 static struct nl_sock
*sock_rtnl
= NULL
;
88 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
);
89 static void handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
);
90 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
,
91 const unsigned int link
, struct blob_attr
**tb
);
92 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
);
94 static char dev_buf
[256];
97 handler_nl_event(struct uloop_fd
*u
, unsigned int events
)
99 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
101 socklen_t errlen
= sizeof(err
);
104 nl_recvmsgs_default(ev
->sock
);
108 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
113 /* Increase rx buffer size on netlink socket */
115 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
118 /* Request full dump since some info got dropped */
119 struct rtgenmsg msg
= { .rtgen_family
= AF_UNSPEC
};
120 nl_send_simple(ev
->sock
, RTM_GETLINK
, NLM_F_DUMP
, &msg
, sizeof(msg
));
130 uloop_fd_delete(&ev
->uloop
);
134 static struct nl_sock
*
135 create_socket(int protocol
, int groups
)
137 struct nl_sock
*sock
;
139 sock
= nl_socket_alloc();
144 nl_join_groups(sock
, groups
);
146 if (nl_connect(sock
, protocol
)) {
147 nl_socket_free(sock
);
155 create_raw_event_socket(struct event_socket
*ev
, int protocol
, int groups
,
156 uloop_fd_handler cb
, int flags
)
158 ev
->sock
= create_socket(protocol
, groups
);
162 ev
->uloop
.fd
= nl_socket_get_fd(ev
->sock
);
164 if (uloop_fd_add(&ev
->uloop
, ULOOP_READ
|flags
))
171 create_event_socket(struct event_socket
*ev
, int protocol
,
172 int (*cb
)(struct nl_msg
*msg
, void *arg
))
174 if (!create_raw_event_socket(ev
, protocol
, 0, handler_nl_event
, ULOOP_ERROR_CB
))
177 /* Install the valid custom callback handler */
178 nl_socket_modify_cb(ev
->sock
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, NULL
);
180 /* Disable sequence number checking on event sockets */
181 nl_socket_disable_seq_check(ev
->sock
);
183 /* Increase rx buffer size to 65K on event sockets */
185 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
192 create_hotplug_event_socket(struct event_socket
*ev
, int protocol
,
193 void (*cb
)(struct uloop_fd
*u
, unsigned int events
))
195 if (!create_raw_event_socket(ev
, protocol
, 1, cb
, ULOOP_ERROR_CB
))
198 /* Increase rx buffer size to 65K on event sockets */
200 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
207 system_rtn_aton(const char *src
, unsigned int *dst
)
212 if (!strcmp(src
, "local"))
214 else if (!strcmp(src
, "nat"))
216 else if (!strcmp(src
, "broadcast"))
218 else if (!strcmp(src
, "anycast"))
220 else if (!strcmp(src
, "multicast"))
222 else if (!strcmp(src
, "prohibit"))
224 else if (!strcmp(src
, "unreachable"))
226 else if (!strcmp(src
, "blackhole"))
228 else if (!strcmp(src
, "xresolve"))
230 else if (!strcmp(src
, "unicast"))
232 else if (!strcmp(src
, "throw"))
234 else if (!strcmp(src
, "failed_policy"))
235 n
= RTN_FAILED_POLICY
;
237 n
= strtoul(src
, &e
, 0);
238 if (!e
|| *e
|| e
== src
|| n
> 255)
247 system_tos_aton(const char *src
, unsigned *dst
)
251 *dst
= strtoul(src
, &e
, 16);
252 if (e
== src
|| *e
|| *dst
> 255)
258 int system_init(void)
260 static struct event_socket rtnl_event
;
261 static struct event_socket hotplug_event
;
263 sock_ioctl
= socket(AF_LOCAL
, SOCK_DGRAM
, 0);
264 system_fd_set_cloexec(sock_ioctl
);
266 /* Prepare socket for routing / address control */
267 sock_rtnl
= create_socket(NETLINK_ROUTE
, 0);
271 if (!create_event_socket(&rtnl_event
, NETLINK_ROUTE
, cb_rtnl_event
))
274 if (!create_hotplug_event_socket(&hotplug_event
, NETLINK_KOBJECT_UEVENT
,
275 handle_hotplug_event
))
278 /* Receive network link events form kernel */
279 nl_socket_add_membership(rtnl_event
.sock
, RTNLGRP_LINK
);
284 static void system_set_sysctl(const char *path
, const char *val
)
288 fd
= open(path
, O_WRONLY
);
292 if (write(fd
, val
, strlen(val
))) {}
296 static void system_set_dev_sysctl(const char *path
, const char *device
, const char *val
)
298 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
299 system_set_sysctl(dev_buf
, val
);
302 static void system_set_disable_ipv6(struct device
*dev
, const char *val
)
304 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev
->ifname
, val
);
307 static void system_set_rpfilter(struct device
*dev
, const char *val
)
309 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter", dev
->ifname
, val
);
312 static void system_set_acceptlocal(struct device
*dev
, const char *val
)
314 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local", dev
->ifname
, val
);
317 static void system_set_igmpversion(struct device
*dev
, const char *val
)
319 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version", dev
->ifname
, val
);
322 static void system_set_mldversion(struct device
*dev
, const char *val
)
324 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version", dev
->ifname
, val
);
327 static void system_set_neigh4reachabletime(struct device
*dev
, const char *val
)
329 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
332 static void system_set_neigh6reachabletime(struct device
*dev
, const char *val
)
334 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
337 static void system_set_neigh4gcstaletime(struct device
*dev
, const char *val
)
339 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time", dev
->ifname
, val
);
342 static void system_set_neigh6gcstaletime(struct device
*dev
, const char *val
)
344 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time", dev
->ifname
, val
);
347 static void system_set_neigh4locktime(struct device
*dev
, const char *val
)
349 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime", dev
->ifname
, val
);
352 static void system_set_dadtransmits(struct device
*dev
, const char *val
)
354 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits", dev
->ifname
, val
);
357 static void system_bridge_set_multicast_to_unicast(struct device
*dev
, const char *val
)
359 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_to_unicast", dev
->ifname
, val
);
362 static void system_bridge_set_multicast_fast_leave(struct device
*dev
, const char *val
)
364 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_fast_leave", dev
->ifname
, val
);
367 static void system_bridge_set_hairpin_mode(struct device
*dev
, const char *val
)
369 system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev
->ifname
, val
);
372 static void system_bridge_set_isolated(struct device
*dev
, const char *val
)
374 system_set_dev_sysctl("/sys/class/net/%s/brport/isolated", dev
->ifname
, val
);
377 static void system_bridge_set_multicast_router(struct device
*dev
, const char *val
, bool bridge
)
379 system_set_dev_sysctl(bridge
? "/sys/class/net/%s/bridge/multicast_router" :
380 "/sys/class/net/%s/brport/multicast_router",
384 static void system_bridge_set_robustness(struct device
*dev
, const char *val
)
386 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_count",
388 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_count",
392 static void system_bridge_set_query_interval(struct device
*dev
, const char *val
)
394 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_interval",
398 static void system_bridge_set_query_response_interval(struct device
*dev
, const char *val
)
400 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_response_interval",
404 static void system_bridge_set_last_member_interval(struct device
*dev
, const char *val
)
406 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_interval",
410 static void system_bridge_set_membership_interval(struct device
*dev
, const char *val
)
412 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_membership_interval",
416 static void system_bridge_set_other_querier_timeout(struct device
*dev
, const char *val
)
418 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier_interval",
422 static void system_bridge_set_startup_query_interval(struct device
*dev
, const char *val
)
424 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_interval",
428 static void system_bridge_set_stp_state(struct device
*dev
, const char *val
)
430 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/stp_state", dev
->ifname
, val
);
433 static void system_bridge_set_forward_delay(struct device
*dev
, const char *val
)
435 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/forward_delay", dev
->ifname
, val
);
438 static void system_bridge_set_priority(struct device
*dev
, const char *val
)
440 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/priority", dev
->ifname
, val
);
443 static void system_bridge_set_ageing_time(struct device
*dev
, const char *val
)
445 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/ageing_time", dev
->ifname
, val
);
448 static void system_bridge_set_hello_time(struct device
*dev
, const char *val
)
450 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hello_time", dev
->ifname
, val
);
453 static void system_bridge_set_max_age(struct device
*dev
, const char *val
)
455 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/max_age", dev
->ifname
, val
);
458 static void system_bridge_set_learning(struct device
*dev
, const char *val
)
460 system_set_dev_sysctl("/sys/class/net/%s/brport/learning", dev
->ifname
, val
);
463 static void system_bridge_set_unicast_flood(struct device
*dev
, const char *val
)
465 system_set_dev_sysctl("/sys/class/net/%s/brport/unicast_flood", dev
->ifname
, val
);
468 static void system_set_sendredirects(struct device
*dev
, const char *val
)
470 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects", dev
->ifname
, val
);
473 static void system_bridge_set_vlan_filtering(struct device
*dev
, const char *val
)
475 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/vlan_filtering", dev
->ifname
, val
);
478 static int system_get_sysctl(const char *path
, char *buf
, const size_t buf_sz
)
480 int fd
= -1, ret
= -1;
482 fd
= open(path
, O_RDONLY
);
486 ssize_t len
= read(fd
, buf
, buf_sz
- 1);
500 system_get_dev_sysctl(const char *path
, const char *device
, char *buf
, const size_t buf_sz
)
502 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
503 return system_get_sysctl(dev_buf
, buf
, buf_sz
);
506 static int system_get_disable_ipv6(struct device
*dev
, char *buf
, const size_t buf_sz
)
508 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
509 dev
->ifname
, buf
, buf_sz
);
512 static int system_get_rpfilter(struct device
*dev
, char *buf
, const size_t buf_sz
)
514 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
515 dev
->ifname
, buf
, buf_sz
);
518 static int system_get_acceptlocal(struct device
*dev
, char *buf
, const size_t buf_sz
)
520 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
521 dev
->ifname
, buf
, buf_sz
);
524 static int system_get_igmpversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
526 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
527 dev
->ifname
, buf
, buf_sz
);
530 static int system_get_mldversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
532 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
533 dev
->ifname
, buf
, buf_sz
);
536 static int system_get_neigh4reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
538 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
539 dev
->ifname
, buf
, buf_sz
);
542 static int system_get_neigh6reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
544 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
545 dev
->ifname
, buf
, buf_sz
);
548 static int system_get_neigh4gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
550 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time",
551 dev
->ifname
, buf
, buf_sz
);
554 static int system_get_neigh6gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
556 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time",
557 dev
->ifname
, buf
, buf_sz
);
560 static int system_get_neigh4locktime(struct device
*dev
, char *buf
, const size_t buf_sz
)
562 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime",
563 dev
->ifname
, buf
, buf_sz
);
566 static int system_get_dadtransmits(struct device
*dev
, char *buf
, const size_t buf_sz
)
568 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
569 dev
->ifname
, buf
, buf_sz
);
572 static int system_get_sendredirects(struct device
*dev
, char *buf
, const size_t buf_sz
)
574 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects",
575 dev
->ifname
, buf
, buf_sz
);
578 /* Evaluate netlink messages */
579 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
581 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
582 struct nlattr
*nla
[__IFLA_MAX
];
586 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
589 nlmsg_parse(nh
, sizeof(struct ifinfomsg
), nla
, __IFLA_MAX
- 1, NULL
);
590 if (!nla
[IFLA_IFNAME
])
593 struct device
*dev
= device_find(nla_data(nla
[IFLA_IFNAME
]));
597 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev
->ifname
, buf
, sizeof(buf
)))
598 link_state
= strtoul(buf
, NULL
, 0);
600 if (dev
->type
== &simple_device_type
&& !system_if_force_external(dev
->ifname
))
601 device_set_present(dev
, true);
603 device_set_link(dev
, link_state
? true : false);
610 handle_hotplug_msg(char *data
, int size
)
612 const char *subsystem
= NULL
, *interface
= NULL
, *interface_old
= NULL
;
613 char *cur
, *end
, *sep
;
616 bool add
, move
= false;
618 if (!strncmp(data
, "add@", 4))
620 else if (!strncmp(data
, "remove@", 7))
622 else if (!strncmp(data
, "move@", 5)) {
629 skip
= strlen(data
) + 1;
632 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
633 skip
= strlen(cur
) + 1;
635 sep
= strchr(cur
, '=');
640 if (!strcmp(cur
, "INTERFACE"))
642 else if (!strcmp(cur
, "SUBSYSTEM")) {
644 if (strcmp(subsystem
, "net") != 0)
646 } else if (!strcmp(cur
, "DEVPATH_OLD")) {
647 interface_old
= strrchr(sep
+ 1, '/');
653 if (subsystem
&& interface
) {
654 if (move
&& interface_old
)
663 dev
= device_find(interface_old
);
667 if (dev
->type
!= &simple_device_type
)
670 device_set_present(dev
, false);
675 dev
= device_find(interface
);
679 if (dev
->type
!= &simple_device_type
)
682 if (add
&& system_if_force_external(dev
->ifname
))
685 device_set_present(dev
, add
);
689 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
691 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
692 struct sockaddr_nl nla
;
693 unsigned char *buf
= NULL
;
696 socklen_t errlen
= sizeof(err
);
699 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
701 handle_hotplug_msg((char *) buf
, size
);
708 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
713 /* Increase rx buffer size on netlink socket */
715 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
726 uloop_fd_delete(&ev
->uloop
);
730 static int system_rtnl_call(struct nl_msg
*msg
)
734 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
740 return nl_wait_for_ack(sock_rtnl
);
743 int system_bridge_delbr(struct device
*bridge
)
745 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
748 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
752 memset(&ifr
, 0, sizeof(ifr
));
754 ifr
.ifr_ifindex
= dev
->ifindex
;
757 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
) - 1);
758 return ioctl(sock_ioctl
, cmd
, &ifr
);
761 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
765 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
766 if (stat(buf
, &st
) < 0)
772 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
778 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
779 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
783 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
791 path
= strrchr(buf
, '/');
799 system_bridge_set_wireless(struct device
*bridge
, struct device
*dev
)
801 bool mcast_to_ucast
= dev
->wireless_ap
;
804 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_TO_UNICAST
&&
805 !bridge
->settings
.multicast_to_unicast
)
806 mcast_to_ucast
= false;
808 if (!mcast_to_ucast
|| dev
->wireless_isolate
)
811 system_bridge_set_multicast_to_unicast(dev
, mcast_to_ucast
? "1" : "0");
812 system_bridge_set_hairpin_mode(dev
, hairpin
? "1" : "0");
815 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
821 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
822 if (!oldbr
|| strcmp(oldbr
, bridge
->ifname
) != 0)
823 ret
= system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
826 system_bridge_set_wireless(bridge
, dev
);
828 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
829 snprintf(buf
, sizeof(buf
), "%u", dev
->settings
.multicast_router
);
830 system_bridge_set_multicast_router(dev
, buf
, false);
833 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_FAST_LEAVE
&&
834 dev
->settings
.multicast_fast_leave
)
835 system_bridge_set_multicast_fast_leave(dev
, "1");
837 if (dev
->settings
.flags
& DEV_OPT_LEARNING
&&
838 !dev
->settings
.learning
)
839 system_bridge_set_learning(dev
, "0");
841 if (dev
->settings
.flags
& DEV_OPT_UNICAST_FLOOD
&&
842 !dev
->settings
.unicast_flood
)
843 system_bridge_set_unicast_flood(dev
, "0");
845 if (dev
->settings
.flags
& DEV_OPT_ISOLATE
&&
846 dev
->settings
.isolate
)
847 system_bridge_set_isolated(dev
, "1");
852 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
854 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
857 int system_if_resolve(struct device
*dev
)
860 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
861 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
862 return ifr
.ifr_ifindex
;
867 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
871 memset(&ifr
, 0, sizeof(ifr
));
872 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
) - 1);
873 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) < 0)
876 ifr
.ifr_flags
|= add
;
877 ifr
.ifr_flags
&= ~rem
;
878 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
890 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
892 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
894 return ifa
->ifa_index
== ifindex
;
897 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
899 struct rtmsg
*r
= NLMSG_DATA(hdr
);
900 struct nlattr
*tb
[__RTA_MAX
];
902 if (r
->rtm_protocol
== RTPROT_KERNEL
&&
903 r
->rtm_family
== AF_INET6
)
906 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
910 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
913 static bool check_rule(struct nlmsghdr
*hdr
, int ifindex
)
918 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
920 struct clear_data
*clr
= arg
;
921 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
922 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
928 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
935 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
942 if (hdr
->nlmsg_type
!= RTM_NEWRULE
)
951 if (!cb(hdr
, clr
->dev
? clr
->dev
->ifindex
: 0))
954 if (type
== RTM_DELRULE
)
955 D(SYSTEM
, "Remove a rule\n");
957 D(SYSTEM
, "Remove %s from device %s\n",
958 type
== RTM_DELADDR
? "an address" : "a route",
961 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
962 hdr
= nlmsg_hdr(clr
->msg
);
963 hdr
->nlmsg_type
= type
;
964 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
966 nl_socket_disable_auto_ack(sock_rtnl
);
967 ret
= nl_send_auto_complete(sock_rtnl
, clr
->msg
);
969 if (type
== RTM_DELRULE
)
970 D(SYSTEM
, "Error deleting a rule: %d\n", ret
);
972 D(SYSTEM
, "Error deleting %s from device '%s': %d\n",
973 type
== RTM_DELADDR
? "an address" : "a route",
974 clr
->dev
->ifname
, ret
);
977 nl_socket_enable_auto_ack(sock_rtnl
);
983 cb_finish_event(struct nl_msg
*msg
, void *arg
)
991 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
994 *pending
= err
->error
;
999 system_if_clear_entries(struct device
*dev
, int type
, int af
)
1001 struct clear_data clr
;
1003 struct rtmsg rtm
= {
1005 .rtm_flags
= RTM_F_CLONED
,
1007 int flags
= NLM_F_DUMP
;
1016 clr
.size
= sizeof(struct rtgenmsg
);
1019 clr
.size
= sizeof(struct rtmsg
);
1025 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1029 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
1033 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
1034 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
1035 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
1036 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
1038 if (nl_send_auto_complete(sock_rtnl
, clr
.msg
) < 0)
1042 nl_recvmsgs(sock_rtnl
, cb
);
1045 nlmsg_free(clr
.msg
);
1051 * Clear bridge (membership) state and bring down device
1053 void system_if_clear_state(struct device
*dev
)
1055 static char buf
[256];
1057 device_set_ifindex(dev
, system_if_resolve(dev
));
1059 if (dev
->external
|| !dev
->ifindex
)
1062 system_if_flags(dev
->ifname
, 0, IFF_UP
);
1064 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
1065 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
1066 system_bridge_delbr(dev
);
1070 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
1072 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
1073 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
1076 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
1077 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
1078 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
1079 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
1080 system_if_clear_entries(dev
, RTM_GETNEIGH
, AF_INET
);
1081 system_if_clear_entries(dev
, RTM_GETNEIGH
, AF_INET6
);
1082 system_set_disable_ipv6(dev
, "0");
1085 static inline unsigned long
1086 sec_to_jiffies(int val
)
1088 return (unsigned long) val
* 100;
1091 static void system_bridge_conf_multicast_deps(struct device
*bridge
,
1092 struct bridge_config
*cfg
,
1098 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
||
1099 cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
||
1100 cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
1101 val
= cfg
->robustness
* cfg
->query_interval
+
1102 cfg
->query_response_interval
;
1104 snprintf(buf
, buf_len
, "%i", val
);
1105 system_bridge_set_membership_interval(bridge
, buf
);
1107 val
= cfg
->robustness
* cfg
->query_interval
+
1108 cfg
->query_response_interval
/ 2;
1110 snprintf(buf
, buf_len
, "%i", val
);
1111 system_bridge_set_other_querier_timeout(bridge
, buf
);
1114 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
1115 val
= cfg
->query_interval
/ 4;
1117 snprintf(buf
, buf_len
, "%i", val
);
1118 system_bridge_set_startup_query_interval(bridge
, buf
);
1122 static void system_bridge_conf_multicast(struct device
*bridge
,
1123 struct bridge_config
*cfg
,
1127 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
1128 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
1130 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
1131 bridge
->ifname
, cfg
->multicast_querier
? "1" : "0");
1133 snprintf(buf
, buf_len
, "%i", cfg
->hash_max
);
1134 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
1135 bridge
->ifname
, buf
);
1137 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
1138 snprintf(buf
, buf_len
, "%u", bridge
->settings
.multicast_router
);
1139 system_bridge_set_multicast_router(bridge
, buf
, true);
1142 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
) {
1143 snprintf(buf
, buf_len
, "%i", cfg
->robustness
);
1144 system_bridge_set_robustness(bridge
, buf
);
1147 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
1148 snprintf(buf
, buf_len
, "%i", cfg
->query_interval
);
1149 system_bridge_set_query_interval(bridge
, buf
);
1152 if (cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
1153 snprintf(buf
, buf_len
, "%i", cfg
->query_response_interval
);
1154 system_bridge_set_query_response_interval(bridge
, buf
);
1157 if (cfg
->flags
& BRIDGE_OPT_LAST_MEMBER_INTERVAL
) {
1158 snprintf(buf
, buf_len
, "%i", cfg
->last_member_interval
);
1159 system_bridge_set_last_member_interval(bridge
, buf
);
1162 system_bridge_conf_multicast_deps(bridge
, cfg
, buf
, buf_len
);
1165 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
1169 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
1172 system_bridge_set_stp_state(bridge
, cfg
->stp
? "1" : "0");
1174 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->forward_delay
));
1175 system_bridge_set_forward_delay(bridge
, buf
);
1177 system_bridge_conf_multicast(bridge
, cfg
, buf
, sizeof(buf
));
1178 system_bridge_set_vlan_filtering(bridge
, cfg
->vlan_filtering
? "1" : "0");
1180 snprintf(buf
, sizeof(buf
), "%d", cfg
->priority
);
1181 system_bridge_set_priority(bridge
, buf
);
1183 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
1184 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->ageing_time
));
1185 system_bridge_set_ageing_time(bridge
, buf
);
1188 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
1189 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->hello_time
));
1190 system_bridge_set_hello_time(bridge
, buf
);
1193 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
1194 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->max_age
));
1195 system_bridge_set_max_age(bridge
, buf
);
1201 int system_macvlan_add(struct device
*macvlan
, struct device
*dev
, struct macvlan_config
*cfg
)
1204 struct nlattr
*linkinfo
, *data
;
1205 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
1207 static const struct {
1209 enum macvlan_mode val
;
1211 { "private", MACVLAN_MODE_PRIVATE
},
1212 { "vepa", MACVLAN_MODE_VEPA
},
1213 { "bridge", MACVLAN_MODE_BRIDGE
},
1214 { "passthru", MACVLAN_MODE_PASSTHRU
},
1217 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1222 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1224 if (cfg
->flags
& MACVLAN_OPT_MACADDR
)
1225 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1226 nla_put_string(msg
, IFLA_IFNAME
, macvlan
->ifname
);
1227 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1229 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1230 goto nla_put_failure
;
1232 nla_put_string(msg
, IFLA_INFO_KIND
, "macvlan");
1234 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1235 goto nla_put_failure
;
1238 for (i
= 0; i
< ARRAY_SIZE(modes
); i
++) {
1239 if (strcmp(cfg
->mode
, modes
[i
].name
) != 0)
1242 nla_put_u32(msg
, IFLA_MACVLAN_MODE
, modes
[i
].val
);
1247 nla_nest_end(msg
, data
);
1248 nla_nest_end(msg
, linkinfo
);
1250 rv
= system_rtnl_call(msg
);
1252 D(SYSTEM
, "Error adding macvlan '%s' over '%s': %d\n", macvlan
->ifname
, dev
->ifname
, rv
);
1261 int system_link_netns_move(struct device
*dev
, int netns_fd
, const char *target_ifname
)
1264 struct ifinfomsg iim
= {
1265 .ifi_family
= AF_UNSPEC
,
1271 iim
.ifi_index
= system_if_resolve(dev
);
1272 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
);
1277 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1279 nla_put_string(msg
, IFLA_IFNAME
, target_ifname
);
1281 nla_put_u32(msg
, IFLA_NET_NS_FD
, netns_fd
);
1282 return system_rtnl_call(msg
);
1285 static int system_link_del(const char *ifname
)
1288 struct ifinfomsg iim
= {
1289 .ifi_family
= AF_UNSPEC
,
1293 msg
= nlmsg_alloc_simple(RTM_DELLINK
, NLM_F_REQUEST
);
1298 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1299 nla_put_string(msg
, IFLA_IFNAME
, ifname
);
1300 return system_rtnl_call(msg
);
1303 int system_macvlan_del(struct device
*macvlan
)
1305 return system_link_del(macvlan
->ifname
);
1308 int system_netns_open(const pid_t target_ns
)
1310 char pid_net_path
[PATH_MAX
];
1312 snprintf(pid_net_path
, sizeof(pid_net_path
), "/proc/%u/ns/net", target_ns
);
1314 return open(pid_net_path
, O_RDONLY
);
1317 int system_netns_set(int netns_fd
)
1319 return setns(netns_fd
, CLONE_NEWNET
);
1322 int system_veth_add(struct device
*veth
, struct veth_config
*cfg
)
1325 struct ifinfomsg empty_iim
= {};
1326 struct nlattr
*linkinfo
, *data
, *veth_info
;
1329 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1334 nlmsg_append(msg
, &empty_iim
, sizeof(empty_iim
), 0);
1336 if (cfg
->flags
& VETH_OPT_MACADDR
)
1337 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1338 nla_put_string(msg
, IFLA_IFNAME
, veth
->ifname
);
1340 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1341 goto nla_put_failure
;
1343 nla_put_string(msg
, IFLA_INFO_KIND
, "veth");
1345 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1346 goto nla_put_failure
;
1348 if (!(veth_info
= nla_nest_start(msg
, VETH_INFO_PEER
)))
1349 goto nla_put_failure
;
1351 nlmsg_append(msg
, &empty_iim
, sizeof(empty_iim
), 0);
1353 if (cfg
->flags
& VETH_OPT_PEER_NAME
)
1354 nla_put_string(msg
, IFLA_IFNAME
, cfg
->peer_name
);
1355 if (cfg
->flags
& VETH_OPT_PEER_MACADDR
)
1356 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->peer_macaddr
), cfg
->peer_macaddr
);
1358 nla_nest_end(msg
, veth_info
);
1359 nla_nest_end(msg
, data
);
1360 nla_nest_end(msg
, linkinfo
);
1362 rv
= system_rtnl_call(msg
);
1364 if (cfg
->flags
& VETH_OPT_PEER_NAME
)
1365 D(SYSTEM
, "Error adding veth '%s' with peer '%s': %d\n", veth
->ifname
, cfg
->peer_name
, rv
);
1367 D(SYSTEM
, "Error adding veth '%s': %d\n", veth
->ifname
, rv
);
1377 int system_veth_del(struct device
*veth
)
1379 return system_link_del(veth
->ifname
);
1382 static int system_vlan(struct device
*dev
, int id
)
1384 struct vlan_ioctl_args ifr
= {
1385 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
1386 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
1389 if (ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
) < 0)
1393 ifr
.cmd
= DEL_VLAN_CMD
;
1396 ifr
.cmd
= ADD_VLAN_CMD
;
1399 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
1400 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1403 int system_vlan_add(struct device
*dev
, int id
)
1405 return system_vlan(dev
, id
);
1408 int system_vlan_del(struct device
*dev
)
1410 return system_vlan(dev
, -1);
1413 int system_vlandev_add(struct device
*vlandev
, struct device
*dev
, struct vlandev_config
*cfg
)
1416 struct nlattr
*linkinfo
, *data
, *qos
;
1417 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
};
1418 struct vlan_qos_mapping
*elem
;
1419 struct ifla_vlan_qos_mapping nl_qos_map
;
1422 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1427 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1428 nla_put_string(msg
, IFLA_IFNAME
, vlandev
->ifname
);
1429 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1431 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1432 goto nla_put_failure
;
1434 nla_put_string(msg
, IFLA_INFO_KIND
, "vlan");
1436 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1437 goto nla_put_failure
;
1439 nla_put_u16(msg
, IFLA_VLAN_ID
, cfg
->vid
);
1441 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1442 nla_put_u16(msg
, IFLA_VLAN_PROTOCOL
, htons(cfg
->proto
));
1444 if(cfg
->proto
== VLAN_PROTO_8021AD
)
1445 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
);
1448 if (!(qos
= nla_nest_start(msg
, IFLA_VLAN_INGRESS_QOS
)))
1449 goto nla_put_failure
;
1451 vlist_simple_for_each_element(&cfg
->ingress_qos_mapping_list
, elem
, node
) {
1452 nl_qos_map
.from
= elem
->from
;
1453 nl_qos_map
.to
= elem
->to
;
1454 nla_put(msg
, IFLA_VLAN_QOS_MAPPING
, sizeof(nl_qos_map
), &nl_qos_map
);
1456 nla_nest_end(msg
, qos
);
1458 if (!(qos
= nla_nest_start(msg
, IFLA_VLAN_EGRESS_QOS
)))
1459 goto nla_put_failure
;
1461 vlist_simple_for_each_element(&cfg
->egress_qos_mapping_list
, elem
, node
) {
1462 nl_qos_map
.from
= elem
->from
;
1463 nl_qos_map
.to
= elem
->to
;
1464 nla_put(msg
, IFLA_VLAN_QOS_MAPPING
, sizeof(nl_qos_map
), &nl_qos_map
);
1466 nla_nest_end(msg
, qos
);
1468 nla_nest_end(msg
, data
);
1469 nla_nest_end(msg
, linkinfo
);
1471 rv
= system_rtnl_call(msg
);
1473 D(SYSTEM
, "Error adding vlandev '%s' over '%s': %d\n", vlandev
->ifname
, dev
->ifname
, rv
);
1482 int system_vlandev_del(struct device
*vlandev
)
1484 return system_link_del(vlandev
->ifname
);
1488 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
1493 memset(&ifr
, 0, sizeof(ifr
));
1494 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1496 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
1497 s
->mtu
= ifr
.ifr_mtu
;
1498 s
->flags
|= DEV_OPT_MTU
;
1501 s
->mtu6
= system_update_ipv6_mtu(dev
, 0);
1503 s
->flags
|= DEV_OPT_MTU6
;
1505 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
1506 s
->txqueuelen
= ifr
.ifr_qlen
;
1507 s
->flags
|= DEV_OPT_TXQUEUELEN
;
1510 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
1511 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
1512 s
->flags
|= DEV_OPT_MACADDR
;
1515 if (!system_get_disable_ipv6(dev
, buf
, sizeof(buf
))) {
1516 s
->ipv6
= !strtoul(buf
, NULL
, 0);
1517 s
->flags
|= DEV_OPT_IPV6
;
1520 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) == 0) {
1521 s
->promisc
= ifr
.ifr_flags
& IFF_PROMISC
;
1522 s
->flags
|= DEV_OPT_PROMISC
;
1524 s
->multicast
= ifr
.ifr_flags
& IFF_MULTICAST
;
1525 s
->flags
|= DEV_OPT_MULTICAST
;
1528 if (!system_get_rpfilter(dev
, buf
, sizeof(buf
))) {
1529 s
->rpfilter
= strtoul(buf
, NULL
, 0);
1530 s
->flags
|= DEV_OPT_RPFILTER
;
1533 if (!system_get_acceptlocal(dev
, buf
, sizeof(buf
))) {
1534 s
->acceptlocal
= strtoul(buf
, NULL
, 0);
1535 s
->flags
|= DEV_OPT_ACCEPTLOCAL
;
1538 if (!system_get_igmpversion(dev
, buf
, sizeof(buf
))) {
1539 s
->igmpversion
= strtoul(buf
, NULL
, 0);
1540 s
->flags
|= DEV_OPT_IGMPVERSION
;
1543 if (!system_get_mldversion(dev
, buf
, sizeof(buf
))) {
1544 s
->mldversion
= strtoul(buf
, NULL
, 0);
1545 s
->flags
|= DEV_OPT_MLDVERSION
;
1548 if (!system_get_neigh4reachabletime(dev
, buf
, sizeof(buf
))) {
1549 s
->neigh4reachabletime
= strtoul(buf
, NULL
, 0);
1550 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1553 if (!system_get_neigh6reachabletime(dev
, buf
, sizeof(buf
))) {
1554 s
->neigh6reachabletime
= strtoul(buf
, NULL
, 0);
1555 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1558 if (!system_get_neigh4locktime(dev
, buf
, sizeof(buf
))) {
1559 s
->neigh4locktime
= strtol(buf
, NULL
, 0);
1560 s
->flags
|= DEV_OPT_NEIGHLOCKTIME
;
1563 if (!system_get_neigh4gcstaletime(dev
, buf
, sizeof(buf
))) {
1564 s
->neigh4gcstaletime
= strtoul(buf
, NULL
, 0);
1565 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1568 if (!system_get_neigh6gcstaletime(dev
, buf
, sizeof(buf
))) {
1569 s
->neigh6gcstaletime
= strtoul(buf
, NULL
, 0);
1570 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1573 if (!system_get_dadtransmits(dev
, buf
, sizeof(buf
))) {
1574 s
->dadtransmits
= strtoul(buf
, NULL
, 0);
1575 s
->flags
|= DEV_OPT_DADTRANSMITS
;
1578 if (!system_get_sendredirects(dev
, buf
, sizeof(buf
))) {
1579 s
->sendredirects
= strtoul(buf
, NULL
, 0);
1580 s
->flags
|= DEV_OPT_SENDREDIRECTS
;
1585 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
, unsigned int apply_mask
)
1590 memset(&ifr
, 0, sizeof(ifr
));
1591 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1592 if (s
->flags
& DEV_OPT_MTU
& apply_mask
) {
1593 ifr
.ifr_mtu
= s
->mtu
;
1594 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
1595 s
->flags
&= ~DEV_OPT_MTU
;
1597 if (s
->flags
& DEV_OPT_MTU6
& apply_mask
) {
1598 system_update_ipv6_mtu(dev
, s
->mtu6
);
1600 if (s
->flags
& DEV_OPT_TXQUEUELEN
& apply_mask
) {
1601 ifr
.ifr_qlen
= s
->txqueuelen
;
1602 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
1603 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
1605 if ((s
->flags
& DEV_OPT_MACADDR
& apply_mask
) && !dev
->external
) {
1606 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
1607 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
1608 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
1609 s
->flags
&= ~DEV_OPT_MACADDR
;
1611 if (s
->flags
& DEV_OPT_IPV6
& apply_mask
)
1612 system_set_disable_ipv6(dev
, s
->ipv6
? "0" : "1");
1613 if (s
->flags
& DEV_OPT_PROMISC
& apply_mask
) {
1614 if (system_if_flags(dev
->ifname
, s
->promisc
? IFF_PROMISC
: 0,
1615 !s
->promisc
? IFF_PROMISC
: 0) < 0)
1616 s
->flags
&= ~DEV_OPT_PROMISC
;
1618 if (s
->flags
& DEV_OPT_RPFILTER
& apply_mask
) {
1619 snprintf(buf
, sizeof(buf
), "%u", s
->rpfilter
);
1620 system_set_rpfilter(dev
, buf
);
1622 if (s
->flags
& DEV_OPT_ACCEPTLOCAL
& apply_mask
)
1623 system_set_acceptlocal(dev
, s
->acceptlocal
? "1" : "0");
1624 if (s
->flags
& DEV_OPT_IGMPVERSION
& apply_mask
) {
1625 snprintf(buf
, sizeof(buf
), "%u", s
->igmpversion
);
1626 system_set_igmpversion(dev
, buf
);
1628 if (s
->flags
& DEV_OPT_MLDVERSION
& apply_mask
) {
1629 snprintf(buf
, sizeof(buf
), "%u", s
->mldversion
);
1630 system_set_mldversion(dev
, buf
);
1632 if (s
->flags
& DEV_OPT_NEIGHREACHABLETIME
& apply_mask
) {
1633 snprintf(buf
, sizeof(buf
), "%u", s
->neigh4reachabletime
);
1634 system_set_neigh4reachabletime(dev
, buf
);
1635 snprintf(buf
, sizeof(buf
), "%u", s
->neigh6reachabletime
);
1636 system_set_neigh6reachabletime(dev
, buf
);
1638 if (s
->flags
& DEV_OPT_NEIGHLOCKTIME
& apply_mask
) {
1639 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4locktime
);
1640 system_set_neigh4locktime(dev
, buf
);
1642 if (s
->flags
& DEV_OPT_NEIGHGCSTALETIME
& apply_mask
) {
1643 snprintf(buf
, sizeof(buf
), "%u", s
->neigh4gcstaletime
);
1644 system_set_neigh4gcstaletime(dev
, buf
);
1645 snprintf(buf
, sizeof(buf
), "%u", s
->neigh6gcstaletime
);
1646 system_set_neigh6gcstaletime(dev
, buf
);
1648 if (s
->flags
& DEV_OPT_DADTRANSMITS
& apply_mask
) {
1649 snprintf(buf
, sizeof(buf
), "%u", s
->dadtransmits
);
1650 system_set_dadtransmits(dev
, buf
);
1652 if (s
->flags
& DEV_OPT_MULTICAST
& apply_mask
) {
1653 if (system_if_flags(dev
->ifname
, s
->multicast
? IFF_MULTICAST
: 0,
1654 !s
->multicast
? IFF_MULTICAST
: 0) < 0)
1655 s
->flags
&= ~DEV_OPT_MULTICAST
;
1657 if (s
->flags
& DEV_OPT_SENDREDIRECTS
& apply_mask
)
1658 system_set_sendredirects(dev
, s
->sendredirects
? "1" : "0");
1661 int system_if_up(struct device
*dev
)
1663 system_if_get_settings(dev
, &dev
->orig_settings
);
1664 /* Only keep orig settings based on what needs to be set */
1665 dev
->orig_settings
.valid_flags
= dev
->orig_settings
.flags
;
1666 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
1667 system_if_apply_settings(dev
, &dev
->settings
, dev
->settings
.flags
);
1668 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
1671 int system_if_down(struct device
*dev
)
1673 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
1674 system_if_apply_settings(dev
, &dev
->orig_settings
, dev
->orig_settings
.flags
);
1678 struct if_check_data
{
1684 #ifndef IFF_LOWER_UP
1685 #define IFF_LOWER_UP 0x10000
1688 static int cb_if_check_valid(struct nl_msg
*msg
, void *arg
)
1690 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
1691 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
1692 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1694 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
1697 device_set_present(chk
->dev
, ifi
->ifi_index
> 0 ? true : false);
1698 device_set_link(chk
->dev
, ifi
->ifi_flags
& IFF_LOWER_UP
? true : false);
1703 static int cb_if_check_ack(struct nl_msg
*msg
, void *arg
)
1705 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1710 static int cb_if_check_error(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
1712 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1714 device_set_present(chk
->dev
, false);
1715 device_set_link(chk
->dev
, false);
1716 chk
->pending
= err
->error
;
1721 int system_if_check(struct device
*dev
)
1723 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1725 struct ifinfomsg ifi
= {
1726 .ifi_family
= AF_UNSPEC
,
1729 struct if_check_data chk
= {
1738 msg
= nlmsg_alloc_simple(RTM_GETLINK
, 0);
1742 if (nlmsg_append(msg
, &ifi
, sizeof(ifi
), 0) ||
1743 nla_put_string(msg
, IFLA_IFNAME
, dev
->ifname
))
1746 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_if_check_valid
, &chk
);
1747 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, cb_if_check_ack
, &chk
);
1748 nl_cb_err(cb
, NL_CB_CUSTOM
, cb_if_check_error
, &chk
);
1750 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
1754 while (chk
.pending
> 0)
1755 nl_recvmsgs(sock_rtnl
, cb
);
1767 system_if_get_parent(struct device
*dev
)
1769 char buf
[64], *devname
;
1770 int ifindex
, iflink
, len
;
1773 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
1774 f
= fopen(buf
, "r");
1778 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
1785 iflink
= strtoul(buf
, NULL
, 0);
1786 ifindex
= system_if_resolve(dev
);
1787 if (!iflink
|| iflink
== ifindex
)
1790 devname
= if_indextoname(iflink
, buf
);
1794 return device_get(devname
, true);
1798 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
1804 fd
= openat(dir_fd
, file
, O_RDONLY
);
1809 len
= read(fd
, buf
, len
- 1);
1813 } else if (len
> 0) {
1816 c
= strchr(buf
, '\n');
1829 read_uint64_file(int dir_fd
, const char *file
, uint64_t *val
)
1834 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
1836 *val
= strtoull(buf
, NULL
, 0);
1841 /* Assume advertised flags == supported flags */
1842 static const struct {
1845 } ethtool_link_modes
[] = {
1846 { ADVERTISED_10baseT_Half
, "10baseT-H" },
1847 { ADVERTISED_10baseT_Full
, "10baseT-F" },
1848 { ADVERTISED_100baseT_Half
, "100baseT-H" },
1849 { ADVERTISED_100baseT_Full
, "100baseT-F" },
1850 { ADVERTISED_1000baseT_Half
, "1000baseT-H" },
1851 { ADVERTISED_1000baseT_Full
, "1000baseT-F" },
1852 { ADVERTISED_1000baseKX_Full
, "1000baseKX-F" },
1853 { ADVERTISED_2500baseX_Full
, "2500baseX-F" },
1854 { ADVERTISED_10000baseT_Full
, "10000baseT-F" },
1855 { ADVERTISED_10000baseKX4_Full
, "10000baseKX4-F" },
1856 { ADVERTISED_10000baseKR_Full
, "10000baseKR-F" },
1857 { ADVERTISED_20000baseMLD2_Full
, "20000baseMLD2-F" },
1858 { ADVERTISED_20000baseKR2_Full
, "20000baseKR2-F" },
1859 { ADVERTISED_40000baseKR4_Full
, "40000baseKR4-F" },
1860 { ADVERTISED_40000baseCR4_Full
, "40000baseCR4-F" },
1861 { ADVERTISED_40000baseSR4_Full
, "40000baseSR4-F" },
1862 { ADVERTISED_40000baseLR4_Full
, "40000baseLR4-F" },
1863 #ifdef ADVERTISED_56000baseKR4_Full
1864 { ADVERTISED_56000baseKR4_Full
, "56000baseKR4-F" },
1865 { ADVERTISED_56000baseCR4_Full
, "56000baseCR4-F" },
1866 { ADVERTISED_56000baseSR4_Full
, "56000baseSR4-F" },
1867 { ADVERTISED_56000baseLR4_Full
, "56000baseLR4-F" },
1871 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
1874 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
1875 if (mask
& ethtool_link_modes
[i
].mask
)
1876 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
1881 system_if_force_external(const char *ifname
)
1886 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/phy80211", ifname
);
1887 return stat(buf
, &s
) == 0;
1891 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
1893 struct ethtool_cmd ecmd
;
1898 memset(&ecmd
, 0, sizeof(ecmd
));
1899 memset(&ifr
, 0, sizeof(ifr
));
1900 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1901 ifr
.ifr_data
= (caddr_t
) &ecmd
;
1902 ecmd
.cmd
= ETHTOOL_GSET
;
1904 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
1905 c
= blobmsg_open_array(b
, "link-advertising");
1906 system_add_link_modes(b
, ecmd
.advertising
);
1907 blobmsg_close_array(b
, c
);
1909 c
= blobmsg_open_array(b
, "link-partner-advertising");
1910 system_add_link_modes(b
, ecmd
.lp_advertising
);
1911 blobmsg_close_array(b
, c
);
1913 c
= blobmsg_open_array(b
, "link-supported");
1914 system_add_link_modes(b
, ecmd
.supported
);
1915 blobmsg_close_array(b
, c
);
1917 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
1918 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
1919 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
1920 blobmsg_add_string_buffer(b
);
1922 blobmsg_add_u8(b
, "autoneg", !!ecmd
.autoneg
);
1929 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
1931 const char *const counters
[] = {
1932 "collisions", "rx_frame_errors", "tx_compressed",
1933 "multicast", "rx_length_errors", "tx_dropped",
1934 "rx_bytes", "rx_missed_errors", "tx_errors",
1935 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1936 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1937 "rx_dropped", "tx_aborted_errors", "tx_packets",
1938 "rx_errors", "tx_bytes", "tx_window_errors",
1939 "rx_fifo_errors", "tx_carrier_errors",
1946 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
1947 stats_dir
= open(buf
, O_DIRECTORY
);
1951 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
1952 if (read_uint64_file(stats_dir
, counters
[i
], &val
))
1953 blobmsg_add_u64(b
, counters
[i
], val
);
1959 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
1961 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
1962 int alen
= v4
? 4 : 16;
1963 unsigned int flags
= 0;
1964 struct ifaddrmsg ifa
= {
1965 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1966 .ifa_prefixlen
= addr
->mask
,
1967 .ifa_index
= dev
->ifindex
,
1971 if (cmd
== RTM_NEWADDR
)
1972 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1974 msg
= nlmsg_alloc_simple(cmd
, flags
);
1978 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
1979 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
1981 if (addr
->broadcast
)
1982 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
1983 if (addr
->point_to_point
)
1984 nla_put_u32(msg
, IFA_ADDRESS
, addr
->point_to_point
);
1986 time_t now
= system_get_rtime();
1987 struct ifa_cacheinfo cinfo
= {0xffffffffU
, 0xffffffffU
, 0, 0};
1989 if (addr
->preferred_until
) {
1990 int64_t preferred
= addr
->preferred_until
- now
;
1993 else if (preferred
> UINT32_MAX
)
1994 preferred
= UINT32_MAX
;
1996 cinfo
.ifa_prefered
= preferred
;
1999 if (addr
->valid_until
) {
2000 int64_t valid
= addr
->valid_until
- now
;
2005 else if (valid
> UINT32_MAX
)
2008 cinfo
.ifa_valid
= valid
;
2011 nla_put(msg
, IFA_CACHEINFO
, sizeof(cinfo
), &cinfo
);
2013 if (cmd
== RTM_NEWADDR
&& (addr
->flags
& DEVADDR_OFFLINK
))
2014 nla_put_u32(msg
, IFA_FLAGS
, IFA_F_NOPREFIXROUTE
);
2017 return system_rtnl_call(msg
);
2020 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
2022 return system_addr(dev
, addr
, RTM_NEWADDR
);
2025 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
2027 return system_addr(dev
, addr
, RTM_DELADDR
);
2030 static int system_neigh(struct device
*dev
, struct device_neighbor
*neighbor
, int cmd
)
2032 int alen
= ((neighbor
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
2033 unsigned int flags
= 0;
2034 struct ndmsg ndm
= {
2035 .ndm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
2036 .ndm_ifindex
= dev
->ifindex
,
2037 .ndm_state
= NUD_PERMANENT
,
2038 .ndm_flags
= (neighbor
->proxy
? NTF_PROXY
: 0) | (neighbor
->router
? NTF_ROUTER
: 0),
2042 if (cmd
== RTM_NEWNEIGH
)
2043 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
2045 msg
= nlmsg_alloc_simple(cmd
, flags
);
2050 nlmsg_append(msg
, &ndm
, sizeof(ndm
), 0);
2052 nla_put(msg
, NDA_DST
, alen
, &neighbor
->addr
);
2053 if (neighbor
->flags
& DEVNEIGH_MAC
)
2054 nla_put(msg
, NDA_LLADDR
, sizeof(neighbor
->macaddr
), &neighbor
->macaddr
);
2057 return system_rtnl_call(msg
);
2060 int system_add_neighbor(struct device
*dev
, struct device_neighbor
*neighbor
)
2062 return system_neigh(dev
, neighbor
, RTM_NEWNEIGH
);
2065 int system_del_neighbor(struct device
*dev
, struct device_neighbor
*neighbor
)
2067 return system_neigh(dev
, neighbor
, RTM_DELNEIGH
);
2070 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
2072 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
2074 unsigned int flags
= 0;
2077 have_gw
= !!route
->nexthop
.in
.s_addr
;
2079 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
2080 route
->nexthop
.in6
.s6_addr32
[1] ||
2081 route
->nexthop
.in6
.s6_addr32
[2] ||
2082 route
->nexthop
.in6
.s6_addr32
[3];
2084 unsigned int table
= (route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))
2085 ? route
->table
: RT_TABLE_MAIN
;
2087 struct rtmsg rtm
= {
2088 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
2089 .rtm_dst_len
= route
->mask
,
2090 .rtm_src_len
= route
->sourcemask
,
2091 .rtm_table
= (table
< 256) ? table
: RT_TABLE_UNSPEC
,
2092 .rtm_protocol
= (route
->flags
& DEVROUTE_PROTO
) ? route
->proto
: RTPROT_STATIC
,
2093 .rtm_scope
= RT_SCOPE_NOWHERE
,
2094 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
2095 .rtm_flags
= (route
->flags
& DEVROUTE_ONLINK
) ? RTNH_F_ONLINK
: 0,
2099 if (cmd
== RTM_NEWROUTE
) {
2100 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
2102 if (!dev
) { /* Add null-route */
2103 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
2104 rtm
.rtm_type
= RTN_UNREACHABLE
;
2107 rtm
.rtm_scope
= (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
2110 if (route
->flags
& DEVROUTE_TYPE
) {
2111 rtm
.rtm_type
= route
->type
;
2112 if (!(route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))) {
2113 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_BROADCAST
||
2114 rtm
.rtm_type
== RTN_NAT
|| rtm
.rtm_type
== RTN_ANYCAST
)
2115 rtm
.rtm_table
= RT_TABLE_LOCAL
;
2118 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_NAT
) {
2119 rtm
.rtm_scope
= RT_SCOPE_HOST
;
2120 } else if (rtm
.rtm_type
== RTN_BROADCAST
|| rtm
.rtm_type
== RTN_MULTICAST
||
2121 rtm
.rtm_type
== RTN_ANYCAST
) {
2122 rtm
.rtm_scope
= RT_SCOPE_LINK
;
2123 } else if (rtm
.rtm_type
== RTN_BLACKHOLE
|| rtm
.rtm_type
== RTN_UNREACHABLE
||
2124 rtm
.rtm_type
== RTN_PROHIBIT
|| rtm
.rtm_type
== RTN_FAILED_POLICY
||
2125 rtm
.rtm_type
== RTN_THROW
) {
2126 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
2131 msg
= nlmsg_alloc_simple(cmd
, flags
);
2135 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
2138 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
2140 if (route
->sourcemask
) {
2141 if (rtm
.rtm_family
== AF_INET
)
2142 nla_put(msg
, RTA_PREFSRC
, alen
, &route
->source
);
2144 nla_put(msg
, RTA_SRC
, alen
, &route
->source
);
2147 if (route
->metric
> 0)
2148 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
2151 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
2154 nla_put_u32(msg
, RTA_OIF
, dev
->ifindex
);
2157 nla_put_u32(msg
, RTA_TABLE
, table
);
2159 if (route
->flags
& DEVROUTE_MTU
) {
2160 struct nlattr
*metrics
;
2162 if (!(metrics
= nla_nest_start(msg
, RTA_METRICS
)))
2163 goto nla_put_failure
;
2165 nla_put_u32(msg
, RTAX_MTU
, route
->mtu
);
2167 nla_nest_end(msg
, metrics
);
2170 return system_rtnl_call(msg
);
2177 int system_add_route(struct device
*dev
, struct device_route
*route
)
2179 return system_rt(dev
, route
, RTM_NEWROUTE
);
2182 int system_del_route(struct device
*dev
, struct device_route
*route
)
2184 return system_rt(dev
, route
, RTM_DELROUTE
);
2187 int system_flush_routes(void)
2189 const char *names
[] = {
2190 "/proc/sys/net/ipv4/route/flush",
2191 "/proc/sys/net/ipv6/route/flush"
2195 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
2196 fd
= open(names
[i
], O_WRONLY
);
2200 if (write(fd
, "-1", 2)) {}
2206 bool system_resolve_rt_type(const char *type
, unsigned int *id
)
2208 return system_rtn_aton(type
, id
);
2211 bool system_resolve_rt_proto(const char *type
, unsigned int *id
)
2215 unsigned int n
, proto
= 256;
2216 n
= strtoul(type
, &e
, 0);
2217 if (!*e
&& e
!= type
)
2219 else if (!strcmp(type
, "unspec"))
2220 proto
= RTPROT_UNSPEC
;
2221 else if (!strcmp(type
, "kernel"))
2222 proto
= RTPROT_KERNEL
;
2223 else if (!strcmp(type
, "boot"))
2224 proto
= RTPROT_BOOT
;
2225 else if (!strcmp(type
, "static"))
2226 proto
= RTPROT_STATIC
;
2227 else if ((f
= fopen("/etc/iproute2/rt_protos", "r")) != NULL
) {
2228 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
) {
2229 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
2232 n
= strtoul(e
, NULL
, 10);
2233 e
= strtok(NULL
, " \t\n");
2235 if (e
&& !strcmp(e
, type
)) {
2250 bool system_resolve_rt_table(const char *name
, unsigned int *id
)
2254 unsigned int n
, table
= RT_TABLE_UNSPEC
;
2256 /* first try to parse table as number */
2257 if ((n
= strtoul(name
, &e
, 0)) > 0 && !*e
)
2260 /* handle well known aliases */
2261 else if (!strcmp(name
, "default"))
2262 table
= RT_TABLE_DEFAULT
;
2263 else if (!strcmp(name
, "main"))
2264 table
= RT_TABLE_MAIN
;
2265 else if (!strcmp(name
, "local"))
2266 table
= RT_TABLE_LOCAL
;
2268 /* try to look up name in /etc/iproute2/rt_tables */
2269 else if ((f
= fopen("/etc/iproute2/rt_tables", "r")) != NULL
)
2271 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
)
2273 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
2276 n
= strtoul(e
, NULL
, 10);
2277 e
= strtok(NULL
, " \t\n");
2279 if (e
&& !strcmp(e
, name
))
2289 if (table
== RT_TABLE_UNSPEC
)
2296 bool system_is_default_rt_table(unsigned int id
)
2298 return (id
== RT_TABLE_MAIN
);
2301 bool system_resolve_rpfilter(const char *filter
, unsigned int *id
)
2306 if (!strcmp(filter
, "strict"))
2308 else if (!strcmp(filter
, "loose"))
2311 n
= strtoul(filter
, &e
, 0);
2312 if (*e
|| e
== filter
|| n
> 2)
2320 static int system_iprule(struct iprule
*rule
, int cmd
)
2322 int alen
= ((rule
->flags
& IPRULE_FAMILY
) == IPRULE_INET4
) ? 4 : 16;
2325 struct rtmsg rtm
= {
2326 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
2327 .rtm_protocol
= RTPROT_STATIC
,
2328 .rtm_scope
= RT_SCOPE_UNIVERSE
,
2329 .rtm_table
= RT_TABLE_UNSPEC
,
2330 .rtm_type
= RTN_UNSPEC
,
2334 if (cmd
== RTM_NEWRULE
)
2335 rtm
.rtm_type
= RTN_UNICAST
;
2338 rtm
.rtm_flags
|= FIB_RULE_INVERT
;
2340 if (rule
->flags
& IPRULE_SRC
)
2341 rtm
.rtm_src_len
= rule
->src_mask
;
2343 if (rule
->flags
& IPRULE_DEST
)
2344 rtm
.rtm_dst_len
= rule
->dest_mask
;
2346 if (rule
->flags
& IPRULE_TOS
)
2347 rtm
.rtm_tos
= rule
->tos
;
2349 if (rule
->flags
& IPRULE_LOOKUP
) {
2350 if (rule
->lookup
< 256)
2351 rtm
.rtm_table
= rule
->lookup
;
2354 if (rule
->flags
& IPRULE_ACTION
)
2355 rtm
.rtm_type
= rule
->action
;
2356 else if (rule
->flags
& IPRULE_GOTO
)
2357 rtm
.rtm_type
= FR_ACT_GOTO
;
2358 else if (!(rule
->flags
& (IPRULE_LOOKUP
| IPRULE_ACTION
| IPRULE_GOTO
)))
2359 rtm
.rtm_type
= FR_ACT_NOP
;
2361 msg
= nlmsg_alloc_simple(cmd
, NLM_F_REQUEST
);
2366 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
2368 if (rule
->flags
& IPRULE_IN
)
2369 nla_put(msg
, FRA_IFNAME
, strlen(rule
->in_dev
) + 1, rule
->in_dev
);
2371 if (rule
->flags
& IPRULE_OUT
)
2372 nla_put(msg
, FRA_OIFNAME
, strlen(rule
->out_dev
) + 1, rule
->out_dev
);
2374 if (rule
->flags
& IPRULE_SRC
)
2375 nla_put(msg
, FRA_SRC
, alen
, &rule
->src_addr
);
2377 if (rule
->flags
& IPRULE_DEST
)
2378 nla_put(msg
, FRA_DST
, alen
, &rule
->dest_addr
);
2380 if (rule
->flags
& IPRULE_PRIORITY
)
2381 nla_put_u32(msg
, FRA_PRIORITY
, rule
->priority
);
2382 else if (cmd
== RTM_NEWRULE
)
2383 nla_put_u32(msg
, FRA_PRIORITY
, rule
->order
);
2385 if (rule
->flags
& IPRULE_FWMARK
)
2386 nla_put_u32(msg
, FRA_FWMARK
, rule
->fwmark
);
2388 if (rule
->flags
& IPRULE_FWMASK
)
2389 nla_put_u32(msg
, FRA_FWMASK
, rule
->fwmask
);
2391 if (rule
->flags
& IPRULE_LOOKUP
) {
2392 if (rule
->lookup
>= 256)
2393 nla_put_u32(msg
, FRA_TABLE
, rule
->lookup
);
2396 if (rule
->flags
& IPRULE_SUP_PREFIXLEN
)
2397 nla_put_u32(msg
, FRA_SUPPRESS_PREFIXLEN
, rule
->sup_prefixlen
);
2399 if (rule
->flags
& IPRULE_GOTO
)
2400 nla_put_u32(msg
, FRA_GOTO
, rule
->gotoid
);
2402 return system_rtnl_call(msg
);
2405 int system_add_iprule(struct iprule
*rule
)
2407 return system_iprule(rule
, RTM_NEWRULE
);
2410 int system_del_iprule(struct iprule
*rule
)
2412 return system_iprule(rule
, RTM_DELRULE
);
2415 int system_flush_iprules(void)
2420 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET
);
2421 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET6
);
2423 memset(&rule
, 0, sizeof(rule
));
2426 rule
.flags
= IPRULE_INET4
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2429 rule
.lookup
= RT_TABLE_LOCAL
;
2430 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2432 rule
.priority
= 32766;
2433 rule
.lookup
= RT_TABLE_MAIN
;
2434 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2436 rule
.priority
= 32767;
2437 rule
.lookup
= RT_TABLE_DEFAULT
;
2438 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2441 rule
.flags
= IPRULE_INET6
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2444 rule
.lookup
= RT_TABLE_LOCAL
;
2445 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2447 rule
.priority
= 32766;
2448 rule
.lookup
= RT_TABLE_MAIN
;
2449 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2454 bool system_resolve_iprule_action(const char *action
, unsigned int *id
)
2456 return system_rtn_aton(action
, id
);
2459 time_t system_get_rtime(void)
2464 if (clock_gettime(CLOCK_MONOTONIC
, &ts
) == 0)
2467 if (gettimeofday(&tv
, NULL
) == 0)
2474 #define IP_DF 0x4000
2477 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
2481 memset(&ifr
, 0, sizeof(ifr
));
2482 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
) - 1);
2483 ifr
.ifr_ifru
.ifru_data
= p
;
2484 return ioctl(sock_ioctl
, cmd
, &ifr
);
2487 #ifdef IFLA_IPTUN_MAX
2488 static int system_add_ip6_tunnel(const char *name
, const unsigned int link
,
2489 struct blob_attr
**tb
)
2491 struct nl_msg
*nlm
= nlmsg_alloc_simple(RTM_NEWLINK
,
2492 NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2493 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
};
2494 struct blob_attr
*cur
;
2495 int ret
= 0, ttl
= 0;
2500 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2501 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2504 nla_put_u32(nlm
, IFLA_LINK
, link
);
2506 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2512 nla_put_string(nlm
, IFLA_INFO_KIND
, "ip6tnl");
2513 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2520 nla_put_u32(nlm
, IFLA_IPTUN_LINK
, link
);
2522 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2523 ttl
= blobmsg_get_u32(cur
);
2525 nla_put_u8(nlm
, IFLA_IPTUN_PROTO
, IPPROTO_IPIP
);
2526 nla_put_u8(nlm
, IFLA_IPTUN_TTL
, (ttl
) ? ttl
: 64);
2528 struct in6_addr in6buf
;
2529 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2530 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2534 nla_put(nlm
, IFLA_IPTUN_LOCAL
, sizeof(in6buf
), &in6buf
);
2537 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2538 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2542 nla_put(nlm
, IFLA_IPTUN_REMOTE
, sizeof(in6buf
), &in6buf
);
2545 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2546 struct blob_attr
*tb_data
[__IPIP6_DATA_ATTR_MAX
];
2547 uint32_t tun_flags
= IP6_TNL_F_IGN_ENCAP_LIMIT
;
2549 blobmsg_parse(ipip6_data_attr_list
.params
, __IPIP6_DATA_ATTR_MAX
, tb_data
,
2550 blobmsg_data(cur
), blobmsg_len(cur
));
2552 if ((cur
= tb_data
[IPIP6_DATA_ENCAPLIMIT
])) {
2553 char *str
= blobmsg_get_string(cur
);
2555 if (strcmp(str
, "ignore")) {
2557 unsigned encap_limit
= strtoul(str
, &e
, 0);
2559 if (e
== str
|| *e
|| encap_limit
> 255) {
2564 nla_put_u8(nlm
, IFLA_IPTUN_ENCAP_LIMIT
, encap_limit
);
2565 tun_flags
&= ~IP6_TNL_F_IGN_ENCAP_LIMIT
;
2569 #ifdef IFLA_IPTUN_FMR_MAX
2570 if ((cur
= tb_data
[IPIP6_DATA_FMRS
])) {
2571 struct blob_attr
*rcur
;
2572 unsigned rrem
, fmrcnt
= 0;
2573 struct nlattr
*fmrs
= nla_nest_start(nlm
, IFLA_IPTUN_FMRS
);
2580 blobmsg_for_each_attr(rcur
, cur
, rrem
) {
2581 struct blob_attr
*tb_fmr
[__FMR_DATA_ATTR_MAX
], *tb_cur
;
2582 struct in6_addr ip6prefix
;
2583 struct in_addr ip4prefix
;
2584 unsigned ip4len
, ip6len
, ealen
, offset
;
2586 blobmsg_parse(fmr_data_attr_list
.params
, __FMR_DATA_ATTR_MAX
, tb_fmr
,
2587 blobmsg_data(rcur
), blobmsg_len(rcur
));
2589 if (!(tb_cur
= tb_fmr
[FMR_DATA_PREFIX6
]) ||
2590 !parse_ip_and_netmask(AF_INET6
,
2591 blobmsg_data(tb_cur
), &ip6prefix
,
2597 if (!(tb_cur
= tb_fmr
[FMR_DATA_PREFIX4
]) ||
2598 !parse_ip_and_netmask(AF_INET
,
2599 blobmsg_data(tb_cur
), &ip4prefix
,
2605 if (!(tb_cur
= tb_fmr
[FMR_DATA_EALEN
])) {
2609 ealen
= blobmsg_get_u32(tb_cur
);
2611 if (!(tb_cur
= tb_fmr
[FMR_DATA_OFFSET
])) {
2615 offset
= blobmsg_get_u32(tb_cur
);
2617 struct nlattr
*rule
= nla_nest_start(nlm
, ++fmrcnt
);
2623 nla_put(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX
, sizeof(ip6prefix
), &ip6prefix
);
2624 nla_put(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX
, sizeof(ip4prefix
), &ip4prefix
);
2625 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX_LEN
, ip6len
);
2626 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX_LEN
, ip4len
);
2627 nla_put_u8(nlm
, IFLA_IPTUN_FMR_EA_LEN
, ealen
);
2628 nla_put_u8(nlm
, IFLA_IPTUN_FMR_OFFSET
, offset
);
2630 nla_nest_end(nlm
, rule
);
2633 nla_nest_end(nlm
, fmrs
);
2637 nla_put_u32(nlm
, IFLA_IPTUN_FLAGS
, tun_flags
);
2640 nla_nest_end(nlm
, infodata
);
2641 nla_nest_end(nlm
, linkinfo
);
2643 return system_rtnl_call(nlm
);
2651 #ifdef IFLA_IPTUN_MAX
2652 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
2653 static int system_add_gre_tunnel(const char *name
, const char *kind
,
2654 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2657 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2658 struct blob_attr
*cur
;
2659 uint32_t ikey
= 0, okey
= 0, flowinfo
= 0, flags6
= IP6_TNL_F_IGN_ENCAP_LIMIT
;
2660 uint16_t iflags
= 0, oflags
= 0;
2662 int ret
= 0, ttl
= 0;
2663 unsigned encap_limit
= 0;
2665 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2669 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2670 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2672 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2678 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2679 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2686 nla_put_u32(nlm
, IFLA_GRE_LINK
, link
);
2688 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2689 ttl
= blobmsg_get_u32(cur
);
2691 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2692 char *str
= blobmsg_get_string(cur
);
2693 if (strcmp(str
, "inherit")) {
2696 if (!system_tos_aton(str
, &uval
)) {
2702 flowinfo
|= htonl(uval
<< 20) & IP6_FLOWINFO_TCLASS
;
2707 flags6
|= IP6_TNL_F_USE_ORIG_TCLASS
;
2713 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2714 struct blob_attr
*tb_data
[__GRE_DATA_ATTR_MAX
];
2716 blobmsg_parse(gre_data_attr_list
.params
, __GRE_DATA_ATTR_MAX
, tb_data
,
2717 blobmsg_data(cur
), blobmsg_len(cur
));
2719 if ((cur
= tb_data
[GRE_DATA_IKEY
])) {
2720 if ((ikey
= blobmsg_get_u32(cur
)))
2724 if ((cur
= tb_data
[GRE_DATA_OKEY
])) {
2725 if ((okey
= blobmsg_get_u32(cur
)))
2729 if ((cur
= tb_data
[GRE_DATA_ICSUM
])) {
2730 if (blobmsg_get_bool(cur
))
2734 if ((cur
= tb_data
[GRE_DATA_OCSUM
])) {
2735 if (blobmsg_get_bool(cur
))
2739 if ((cur
= tb_data
[GRE_DATA_ISEQNO
])) {
2740 if (blobmsg_get_bool(cur
))
2744 if ((cur
= tb_data
[GRE_DATA_OSEQNO
])) {
2745 if (blobmsg_get_bool(cur
))
2749 if ((cur
= tb_data
[GRE_DATA_ENCAPLIMIT
])) {
2750 char *str
= blobmsg_get_string(cur
);
2752 if (strcmp(str
, "ignore")) {
2755 encap_limit
= strtoul(str
, &e
, 0);
2757 if (e
== str
|| *e
|| encap_limit
> 255) {
2762 flags6
&= ~IP6_TNL_F_IGN_ENCAP_LIMIT
;
2768 struct in6_addr in6buf
;
2769 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2770 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2774 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(in6buf
), &in6buf
);
2777 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2778 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2782 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(in6buf
), &in6buf
);
2785 if (!(flags6
& IP6_TNL_F_IGN_ENCAP_LIMIT
))
2786 nla_put_u8(nlm
, IFLA_GRE_ENCAP_LIMIT
, encap_limit
);
2789 nla_put_u32(nlm
, IFLA_GRE_FLOWINFO
, flowinfo
);
2792 nla_put_u32(nlm
, IFLA_GRE_FLAGS
, flags6
);
2797 struct in_addr inbuf
;
2800 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2801 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2805 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(inbuf
), &inbuf
);
2808 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2809 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2813 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(inbuf
), &inbuf
);
2815 if (IN_MULTICAST(ntohl(inbuf
.s_addr
))) {
2817 okey
= inbuf
.s_addr
;
2822 ikey
= inbuf
.s_addr
;
2828 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2829 set_df
= blobmsg_get_bool(cur
);
2832 /* ttl != 0 and nopmtudisc are incompatible */
2840 nla_put_u8(nlm
, IFLA_GRE_PMTUDISC
, set_df
? 1 : 0);
2842 nla_put_u8(nlm
, IFLA_GRE_TOS
, tos
);
2846 nla_put_u8(nlm
, IFLA_GRE_TTL
, ttl
);
2849 nla_put_u16(nlm
, IFLA_GRE_OFLAGS
, oflags
);
2852 nla_put_u16(nlm
, IFLA_GRE_IFLAGS
, iflags
);
2855 nla_put_u32(nlm
, IFLA_GRE_OKEY
, htonl(okey
));
2858 nla_put_u32(nlm
, IFLA_GRE_IKEY
, htonl(ikey
));
2860 nla_nest_end(nlm
, infodata
);
2861 nla_nest_end(nlm
, linkinfo
);
2863 return system_rtnl_call(nlm
);
2872 static int system_add_vti_tunnel(const char *name
, const char *kind
,
2873 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2876 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2877 struct blob_attr
*cur
;
2880 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2884 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2885 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2887 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2893 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2894 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2901 nla_put_u32(nlm
, IFLA_VTI_LINK
, link
);
2904 struct in6_addr in6buf
;
2905 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2906 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2910 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(in6buf
), &in6buf
);
2913 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2914 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2918 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(in6buf
), &in6buf
);
2922 struct in_addr inbuf
;
2924 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2925 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2929 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(inbuf
), &inbuf
);
2932 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2933 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2937 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(inbuf
), &inbuf
);
2942 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2943 struct blob_attr
*tb_data
[__VTI_DATA_ATTR_MAX
];
2944 uint32_t ikey
= 0, okey
= 0;
2946 blobmsg_parse(vti_data_attr_list
.params
, __VTI_DATA_ATTR_MAX
, tb_data
,
2947 blobmsg_data(cur
), blobmsg_len(cur
));
2949 if ((cur
= tb_data
[VTI_DATA_IKEY
])) {
2950 if ((ikey
= blobmsg_get_u32(cur
)))
2951 nla_put_u32(nlm
, IFLA_VTI_IKEY
, htonl(ikey
));
2954 if ((cur
= tb_data
[VTI_DATA_OKEY
])) {
2955 if ((okey
= blobmsg_get_u32(cur
)))
2956 nla_put_u32(nlm
, IFLA_VTI_OKEY
, htonl(okey
));
2960 nla_nest_end(nlm
, infodata
);
2961 nla_nest_end(nlm
, linkinfo
);
2963 return system_rtnl_call(nlm
);
2971 #ifdef IFLA_XFRM_MAX
2972 static int system_add_xfrm_tunnel(const char *name
, const char *kind
,
2973 const unsigned int link
, struct blob_attr
**tb
)
2976 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2977 struct blob_attr
*cur
;
2980 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2984 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2985 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2987 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2993 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2994 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
3001 nla_put_u32(nlm
, IFLA_XFRM_LINK
, link
);
3003 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
3004 struct blob_attr
*tb_data
[__XFRM_DATA_ATTR_MAX
];
3007 blobmsg_parse(xfrm_data_attr_list
.params
, __XFRM_DATA_ATTR_MAX
, tb_data
,
3008 blobmsg_data(cur
), blobmsg_len(cur
));
3010 if ((cur
= tb_data
[XFRM_DATA_IF_ID
])) {
3011 if ((if_id
= blobmsg_get_u32(cur
)))
3012 nla_put_u32(nlm
, IFLA_XFRM_IF_ID
, if_id
);
3017 nla_nest_end(nlm
, infodata
);
3018 nla_nest_end(nlm
, linkinfo
);
3020 return system_rtnl_call(nlm
);
3028 #ifdef IFLA_VXLAN_MAX
3029 static int system_add_vxlan(const char *name
, const unsigned int link
, struct blob_attr
**tb
, bool v6
)
3031 struct blob_attr
*tb_data
[__VXLAN_DATA_ATTR_MAX
];
3033 struct nlattr
*linkinfo
, *data
;
3034 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
3035 struct blob_attr
*cur
;
3038 if ((cur
= tb
[TUNNEL_ATTR_DATA
]))
3039 blobmsg_parse(vxlan_data_attr_list
.params
, __VXLAN_DATA_ATTR_MAX
, tb_data
,
3040 blobmsg_data(cur
), blobmsg_len(cur
));
3044 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
3049 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
3051 nla_put_string(msg
, IFLA_IFNAME
, name
);
3053 if ((cur
= tb_data
[VXLAN_DATA_ATTR_MACADDR
])) {
3054 struct ether_addr
*ea
= ether_aton(blobmsg_get_string(cur
));
3060 nla_put(msg
, IFLA_ADDRESS
, ETH_ALEN
, ea
);
3063 if ((cur
= tb
[TUNNEL_ATTR_MTU
])) {
3064 uint32_t mtu
= blobmsg_get_u32(cur
);
3065 nla_put_u32(msg
, IFLA_MTU
, mtu
);
3068 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
))) {
3073 nla_put_string(msg
, IFLA_INFO_KIND
, "vxlan");
3075 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
))) {
3081 nla_put_u32(msg
, IFLA_VXLAN_LINK
, link
);
3083 if ((cur
= tb_data
[VXLAN_DATA_ATTR_ID
])) {
3084 uint32_t id
= blobmsg_get_u32(cur
);
3085 if (id
>= (1u << 24) - 1) {
3090 nla_put_u32(msg
, IFLA_VXLAN_ID
, id
);
3094 struct in6_addr in6buf
;
3095 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
3096 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
3100 nla_put(msg
, IFLA_VXLAN_LOCAL6
, sizeof(in6buf
), &in6buf
);
3103 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
3104 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
3108 nla_put(msg
, IFLA_VXLAN_GROUP6
, sizeof(in6buf
), &in6buf
);
3111 struct in_addr inbuf
;
3113 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
3114 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
3118 nla_put(msg
, IFLA_VXLAN_LOCAL
, sizeof(inbuf
), &inbuf
);
3121 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
3122 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
3126 nla_put(msg
, IFLA_VXLAN_GROUP
, sizeof(inbuf
), &inbuf
);
3130 uint32_t port
= 4789;
3131 if ((cur
= tb_data
[VXLAN_DATA_ATTR_PORT
])) {
3132 port
= blobmsg_get_u32(cur
);
3133 if (port
< 1 || port
> 65535) {
3138 nla_put_u16(msg
, IFLA_VXLAN_PORT
, htons(port
));
3140 if ((cur
= tb_data
[VXLAN_DATA_ATTR_RXCSUM
])) {
3141 bool rxcsum
= blobmsg_get_bool(cur
);
3142 nla_put_u8(msg
, IFLA_VXLAN_UDP_ZERO_CSUM6_RX
, !rxcsum
);
3145 if ((cur
= tb_data
[VXLAN_DATA_ATTR_TXCSUM
])) {
3146 bool txcsum
= blobmsg_get_bool(cur
);
3147 nla_put_u8(msg
, IFLA_VXLAN_UDP_CSUM
, txcsum
);
3148 nla_put_u8(msg
, IFLA_VXLAN_UDP_ZERO_CSUM6_TX
, !txcsum
);
3151 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
3152 char *str
= blobmsg_get_string(cur
);
3155 if (strcmp(str
, "inherit")) {
3156 if (!system_tos_aton(str
, &tos
)) {
3162 nla_put_u8(msg
, IFLA_VXLAN_TOS
, tos
);
3165 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
3166 uint32_t ttl
= blobmsg_get_u32(cur
);
3167 if (ttl
< 1 || ttl
> 255) {
3172 nla_put_u8(msg
, IFLA_VXLAN_TTL
, ttl
);
3175 nla_nest_end(msg
, data
);
3176 nla_nest_end(msg
, linkinfo
);
3178 ret
= system_rtnl_call(msg
);
3180 D(SYSTEM
, "Error adding vxlan '%s': %d\n", name
, ret
);
3190 static int system_add_sit_tunnel(const char *name
, const unsigned int link
, struct blob_attr
**tb
)
3192 struct blob_attr
*cur
;
3195 if (system_add_proto_tunnel(name
, IPPROTO_IPV6
, link
, tb
) < 0)
3199 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
3200 struct blob_attr
*tb_data
[__SIXRD_DATA_ATTR_MAX
];
3202 struct ip_tunnel_6rd p6
;
3204 blobmsg_parse(sixrd_data_attr_list
.params
, __SIXRD_DATA_ATTR_MAX
, tb_data
,
3205 blobmsg_data(cur
), blobmsg_len(cur
));
3207 memset(&p6
, 0, sizeof(p6
));
3209 if ((cur
= tb_data
[SIXRD_DATA_PREFIX
])) {
3210 if (!parse_ip_and_netmask(AF_INET6
, blobmsg_data(cur
),
3211 &p6
.prefix
, &mask
) || mask
> 128) {
3216 p6
.prefixlen
= mask
;
3219 if ((cur
= tb_data
[SIXRD_DATA_RELAY_PREFIX
])) {
3220 if (!parse_ip_and_netmask(AF_INET
, blobmsg_data(cur
),
3221 &p6
.relay_prefix
, &mask
) || mask
> 32) {
3226 p6
.relay_prefixlen
= mask
;
3229 if (tunnel_ioctl(name
, SIOCADD6RD
, &p6
) < 0) {
3239 __system_del_ip_tunnel(name
, tb
);
3243 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
, const unsigned int link
, struct blob_attr
**tb
)
3245 struct blob_attr
*cur
;
3247 struct ip_tunnel_parm p
= {
3256 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
]) &&
3257 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.saddr
) < 1)
3260 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
]) &&
3261 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.daddr
) < 1)
3264 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
3265 set_df
= blobmsg_get_bool(cur
);
3267 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
3268 p
.iph
.ttl
= blobmsg_get_u32(cur
);
3270 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
3271 char *str
= blobmsg_get_string(cur
);
3272 if (strcmp(str
, "inherit")) {
3275 if (!system_tos_aton(str
, &uval
))
3283 p
.iph
.frag_off
= set_df
? htons(IP_DF
) : 0;
3284 /* ttl !=0 and nopmtudisc are incompatible */
3285 if (p
.iph
.ttl
&& p
.iph
.frag_off
== 0)
3288 strncpy(p
.name
, name
, sizeof(p
.name
) - 1);
3290 switch (p
.iph
.protocol
) {
3292 return tunnel_ioctl("tunl0", SIOCADDTUNNEL
, &p
);
3294 return tunnel_ioctl("sit0", SIOCADDTUNNEL
, &p
);
3301 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
)
3303 struct blob_attr
*cur
;
3306 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
3308 str
= blobmsg_data(cur
);
3310 if (!strcmp(str
, "greip") || !strcmp(str
, "gretapip") ||
3311 !strcmp(str
, "greip6") || !strcmp(str
, "gretapip6") ||
3312 !strcmp(str
, "vtiip") || !strcmp(str
, "vtiip6") ||
3313 !strcmp(str
, "vxlan") || !strcmp(str
, "vxlan6") ||
3314 !strcmp(str
, "xfrm"))
3315 return system_link_del(name
);
3317 return tunnel_ioctl(name
, SIOCDELTUNNEL
, NULL
);
3320 int system_del_ip_tunnel(const char *name
, struct blob_attr
*attr
)
3322 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
3324 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
3325 blob_data(attr
), blob_len(attr
));
3327 return __system_del_ip_tunnel(name
, tb
);
3330 int system_update_ipv6_mtu(struct device
*dev
, int mtu
)
3336 snprintf(buf
, sizeof(buf
), "/proc/sys/net/ipv6/conf/%s/mtu",
3339 fd
= open(buf
, O_RDWR
);
3344 ssize_t len
= read(fd
, buf
, sizeof(buf
) - 1);
3351 if (write(fd
, buf
, snprintf(buf
, sizeof(buf
), "%i", mtu
)) > 0)
3360 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
3362 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
3363 struct blob_attr
*cur
;
3366 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
3367 blob_data(attr
), blob_len(attr
));
3369 __system_del_ip_tunnel(name
, tb
);
3371 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
3373 str
= blobmsg_data(cur
);
3375 unsigned int ttl
= 0;
3376 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
3377 ttl
= blobmsg_get_u32(cur
);
3382 unsigned int link
= 0;
3383 if ((cur
= tb
[TUNNEL_ATTR_LINK
])) {
3384 struct interface
*iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
3388 if (iface
->l3_dev
.dev
)
3389 link
= iface
->l3_dev
.dev
->ifindex
;
3392 if (!strcmp(str
, "sit"))
3393 return system_add_sit_tunnel(name
, link
, tb
);
3394 #ifdef IFLA_IPTUN_MAX
3395 else if (!strcmp(str
, "ipip6")) {
3396 return system_add_ip6_tunnel(name
, link
, tb
);
3397 } else if (!strcmp(str
, "greip")) {
3398 return system_add_gre_tunnel(name
, "gre", link
, tb
, false);
3399 } else if (!strcmp(str
, "gretapip")) {
3400 return system_add_gre_tunnel(name
, "gretap", link
, tb
, false);
3401 } else if (!strcmp(str
, "greip6")) {
3402 return system_add_gre_tunnel(name
, "ip6gre", link
, tb
, true);
3403 } else if (!strcmp(str
, "gretapip6")) {
3404 return system_add_gre_tunnel(name
, "ip6gretap", link
, tb
, true);
3406 } else if (!strcmp(str
, "vtiip")) {
3407 return system_add_vti_tunnel(name
, "vti", link
, tb
, false);
3408 } else if (!strcmp(str
, "vtiip6")) {
3409 return system_add_vti_tunnel(name
, "vti6", link
, tb
, true);
3411 #ifdef IFLA_XFRM_MAX
3412 } else if (!strcmp(str
, "xfrm")) {
3413 return system_add_xfrm_tunnel(name
, "xfrm", link
, tb
);
3415 #ifdef IFLA_VXLAN_MAX
3416 } else if(!strcmp(str
, "vxlan")) {
3417 return system_add_vxlan(name
, link
, tb
, false);
3418 } else if(!strcmp(str
, "vxlan6")) {
3419 return system_add_vxlan(name
, link
, tb
, true);
3422 } else if (!strcmp(str
, "ipip")) {
3423 return system_add_proto_tunnel(name
, IPPROTO_IPIP
, link
, tb
);