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>
79 struct uloop_fd uloop
;
84 static int sock_ioctl
= -1;
85 static struct nl_sock
*sock_rtnl
= NULL
;
87 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
);
88 static void handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
);
89 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
,
90 const unsigned int link
, struct blob_attr
**tb
);
91 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
);
93 static char dev_buf
[256];
96 handler_nl_event(struct uloop_fd
*u
, unsigned int events
)
98 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
100 socklen_t errlen
= sizeof(err
);
103 nl_recvmsgs_default(ev
->sock
);
107 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
112 /* Increase rx buffer size on netlink socket */
114 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
117 /* Request full dump since some info got dropped */
118 struct rtgenmsg msg
= { .rtgen_family
= AF_UNSPEC
};
119 nl_send_simple(ev
->sock
, RTM_GETLINK
, NLM_F_DUMP
, &msg
, sizeof(msg
));
129 uloop_fd_delete(&ev
->uloop
);
133 static struct nl_sock
*
134 create_socket(int protocol
, int groups
)
136 struct nl_sock
*sock
;
138 sock
= nl_socket_alloc();
143 nl_join_groups(sock
, groups
);
145 if (nl_connect(sock
, protocol
)) {
146 nl_socket_free(sock
);
154 create_raw_event_socket(struct event_socket
*ev
, int protocol
, int groups
,
155 uloop_fd_handler cb
, int flags
)
157 ev
->sock
= create_socket(protocol
, groups
);
161 ev
->uloop
.fd
= nl_socket_get_fd(ev
->sock
);
163 if (uloop_fd_add(&ev
->uloop
, ULOOP_READ
|flags
))
170 create_event_socket(struct event_socket
*ev
, int protocol
,
171 int (*cb
)(struct nl_msg
*msg
, void *arg
))
173 if (!create_raw_event_socket(ev
, protocol
, 0, handler_nl_event
, ULOOP_ERROR_CB
))
176 /* Install the valid custom callback handler */
177 nl_socket_modify_cb(ev
->sock
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, NULL
);
179 /* Disable sequence number checking on event sockets */
180 nl_socket_disable_seq_check(ev
->sock
);
182 /* Increase rx buffer size to 65K on event sockets */
184 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
191 create_hotplug_event_socket(struct event_socket
*ev
, int protocol
,
192 void (*cb
)(struct uloop_fd
*u
, unsigned int events
))
194 if (!create_raw_event_socket(ev
, protocol
, 1, cb
, ULOOP_ERROR_CB
))
197 /* Increase rx buffer size to 65K on event sockets */
199 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
206 system_rtn_aton(const char *src
, unsigned int *dst
)
211 if (!strcmp(src
, "local"))
213 else if (!strcmp(src
, "nat"))
215 else if (!strcmp(src
, "broadcast"))
217 else if (!strcmp(src
, "anycast"))
219 else if (!strcmp(src
, "multicast"))
221 else if (!strcmp(src
, "prohibit"))
223 else if (!strcmp(src
, "unreachable"))
225 else if (!strcmp(src
, "blackhole"))
227 else if (!strcmp(src
, "xresolve"))
229 else if (!strcmp(src
, "unicast"))
231 else if (!strcmp(src
, "throw"))
233 else if (!strcmp(src
, "failed_policy"))
234 n
= RTN_FAILED_POLICY
;
236 n
= strtoul(src
, &e
, 0);
237 if (!e
|| *e
|| e
== src
|| n
> 255)
246 system_tos_aton(const char *src
, unsigned *dst
)
250 *dst
= strtoul(src
, &e
, 16);
251 if (e
== src
|| *e
|| *dst
> 255)
257 int system_init(void)
259 static struct event_socket rtnl_event
;
260 static struct event_socket hotplug_event
;
262 sock_ioctl
= socket(AF_LOCAL
, SOCK_DGRAM
, 0);
263 system_fd_set_cloexec(sock_ioctl
);
265 /* Prepare socket for routing / address control */
266 sock_rtnl
= create_socket(NETLINK_ROUTE
, 0);
270 if (!create_event_socket(&rtnl_event
, NETLINK_ROUTE
, cb_rtnl_event
))
273 if (!create_hotplug_event_socket(&hotplug_event
, NETLINK_KOBJECT_UEVENT
,
274 handle_hotplug_event
))
277 /* Receive network link events form kernel */
278 nl_socket_add_membership(rtnl_event
.sock
, RTNLGRP_LINK
);
283 static void system_set_sysctl(const char *path
, const char *val
)
287 fd
= open(path
, O_WRONLY
);
291 if (write(fd
, val
, strlen(val
))) {}
295 static void system_set_dev_sysctl(const char *path
, const char *device
, const char *val
)
297 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
298 system_set_sysctl(dev_buf
, val
);
301 static void system_set_disable_ipv6(struct device
*dev
, const char *val
)
303 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev
->ifname
, val
);
306 static void system_set_rpfilter(struct device
*dev
, const char *val
)
308 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter", dev
->ifname
, val
);
311 static void system_set_acceptlocal(struct device
*dev
, const char *val
)
313 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local", dev
->ifname
, val
);
316 static void system_set_igmpversion(struct device
*dev
, const char *val
)
318 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version", dev
->ifname
, val
);
321 static void system_set_mldversion(struct device
*dev
, const char *val
)
323 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version", dev
->ifname
, val
);
326 static void system_set_neigh4reachabletime(struct device
*dev
, const char *val
)
328 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
331 static void system_set_neigh6reachabletime(struct device
*dev
, const char *val
)
333 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
336 static void system_set_neigh4gcstaletime(struct device
*dev
, const char *val
)
338 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time", dev
->ifname
, val
);
341 static void system_set_neigh6gcstaletime(struct device
*dev
, const char *val
)
343 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time", dev
->ifname
, val
);
346 static void system_set_neigh4locktime(struct device
*dev
, const char *val
)
348 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime", dev
->ifname
, val
);
351 static void system_set_dadtransmits(struct device
*dev
, const char *val
)
353 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits", dev
->ifname
, val
);
356 static void system_bridge_set_multicast_to_unicast(struct device
*dev
, const char *val
)
358 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_to_unicast", dev
->ifname
, val
);
361 static void system_bridge_set_multicast_fast_leave(struct device
*dev
, const char *val
)
363 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_fast_leave", dev
->ifname
, val
);
366 static void system_bridge_set_hairpin_mode(struct device
*dev
, const char *val
)
368 system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev
->ifname
, val
);
371 static void system_bridge_set_isolated(struct device
*dev
, const char *val
)
373 system_set_dev_sysctl("/sys/class/net/%s/brport/isolated", dev
->ifname
, val
);
376 static void system_bridge_set_multicast_router(struct device
*dev
, const char *val
, bool bridge
)
378 system_set_dev_sysctl(bridge
? "/sys/class/net/%s/bridge/multicast_router" :
379 "/sys/class/net/%s/brport/multicast_router",
383 static void system_bridge_set_robustness(struct device
*dev
, const char *val
)
385 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_count",
387 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_count",
391 static void system_bridge_set_query_interval(struct device
*dev
, const char *val
)
393 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_interval",
397 static void system_bridge_set_query_response_interval(struct device
*dev
, const char *val
)
399 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_response_interval",
403 static void system_bridge_set_last_member_interval(struct device
*dev
, const char *val
)
405 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_interval",
409 static void system_bridge_set_membership_interval(struct device
*dev
, const char *val
)
411 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_membership_interval",
415 static void system_bridge_set_other_querier_timeout(struct device
*dev
, const char *val
)
417 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier_interval",
421 static void system_bridge_set_startup_query_interval(struct device
*dev
, const char *val
)
423 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_interval",
427 static void system_bridge_set_stp_state(struct device
*dev
, const char *val
)
429 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/stp_state", dev
->ifname
, val
);
432 static void system_bridge_set_forward_delay(struct device
*dev
, const char *val
)
434 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/forward_delay", dev
->ifname
, val
);
437 static void system_bridge_set_priority(struct device
*dev
, const char *val
)
439 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/priority", dev
->ifname
, val
);
442 static void system_bridge_set_ageing_time(struct device
*dev
, const char *val
)
444 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/ageing_time", dev
->ifname
, val
);
447 static void system_bridge_set_hello_time(struct device
*dev
, const char *val
)
449 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hello_time", dev
->ifname
, val
);
452 static void system_bridge_set_max_age(struct device
*dev
, const char *val
)
454 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/max_age", dev
->ifname
, val
);
457 static void system_bridge_set_learning(struct device
*dev
, const char *val
)
459 system_set_dev_sysctl("/sys/class/net/%s/brport/learning", dev
->ifname
, val
);
462 static void system_bridge_set_unicast_flood(struct device
*dev
, const char *val
)
464 system_set_dev_sysctl("/sys/class/net/%s/brport/unicast_flood", dev
->ifname
, val
);
467 static void system_set_sendredirects(struct device
*dev
, const char *val
)
469 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects", dev
->ifname
, val
);
472 static int system_get_sysctl(const char *path
, char *buf
, const size_t buf_sz
)
474 int fd
= -1, ret
= -1;
476 fd
= open(path
, O_RDONLY
);
480 ssize_t len
= read(fd
, buf
, buf_sz
- 1);
494 system_get_dev_sysctl(const char *path
, const char *device
, char *buf
, const size_t buf_sz
)
496 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
497 return system_get_sysctl(dev_buf
, buf
, buf_sz
);
500 static int system_get_disable_ipv6(struct device
*dev
, char *buf
, const size_t buf_sz
)
502 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
503 dev
->ifname
, buf
, buf_sz
);
506 static int system_get_rpfilter(struct device
*dev
, char *buf
, const size_t buf_sz
)
508 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
509 dev
->ifname
, buf
, buf_sz
);
512 static int system_get_acceptlocal(struct device
*dev
, char *buf
, const size_t buf_sz
)
514 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
515 dev
->ifname
, buf
, buf_sz
);
518 static int system_get_igmpversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
520 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
521 dev
->ifname
, buf
, buf_sz
);
524 static int system_get_mldversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
526 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
527 dev
->ifname
, buf
, buf_sz
);
530 static int system_get_neigh4reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
532 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
533 dev
->ifname
, buf
, buf_sz
);
536 static int system_get_neigh6reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
538 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
539 dev
->ifname
, buf
, buf_sz
);
542 static int system_get_neigh4gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
544 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time",
545 dev
->ifname
, buf
, buf_sz
);
548 static int system_get_neigh6gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
550 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time",
551 dev
->ifname
, buf
, buf_sz
);
554 static int system_get_neigh4locktime(struct device
*dev
, char *buf
, const size_t buf_sz
)
556 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime",
557 dev
->ifname
, buf
, buf_sz
);
560 static int system_get_dadtransmits(struct device
*dev
, char *buf
, const size_t buf_sz
)
562 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
563 dev
->ifname
, buf
, buf_sz
);
566 static int system_get_sendredirects(struct device
*dev
, char *buf
, const size_t buf_sz
)
568 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects",
569 dev
->ifname
, buf
, buf_sz
);
572 /* Evaluate netlink messages */
573 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
575 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
576 struct nlattr
*nla
[__IFLA_MAX
];
580 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
583 nlmsg_parse(nh
, sizeof(struct ifinfomsg
), nla
, __IFLA_MAX
- 1, NULL
);
584 if (!nla
[IFLA_IFNAME
])
587 struct device
*dev
= device_find(nla_data(nla
[IFLA_IFNAME
]));
591 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev
->ifname
, buf
, sizeof(buf
)))
592 link_state
= strtoul(buf
, NULL
, 0);
594 device_set_link(dev
, link_state
? true : false);
601 handle_hotplug_msg(char *data
, int size
)
603 const char *subsystem
= NULL
, *interface
= NULL
, *interface_old
= NULL
;
604 char *cur
, *end
, *sep
;
607 bool add
, move
= false;
609 if (!strncmp(data
, "add@", 4))
611 else if (!strncmp(data
, "remove@", 7))
613 else if (!strncmp(data
, "move@", 5)) {
620 skip
= strlen(data
) + 1;
623 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
624 skip
= strlen(cur
) + 1;
626 sep
= strchr(cur
, '=');
631 if (!strcmp(cur
, "INTERFACE"))
633 else if (!strcmp(cur
, "SUBSYSTEM")) {
635 if (strcmp(subsystem
, "net") != 0)
637 } else if (!strcmp(cur
, "DEVPATH_OLD")) {
638 interface_old
= strrchr(sep
+ 1, '/');
644 if (subsystem
&& interface
) {
645 if (move
&& interface_old
)
654 dev
= device_find(interface_old
);
658 if (dev
->type
!= &simple_device_type
)
661 device_set_present(dev
, false);
664 dev
= device_find(interface
);
668 if (dev
->type
!= &simple_device_type
)
671 if (add
&& system_if_force_external(dev
->ifname
))
674 device_set_present(dev
, add
);
678 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
680 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
681 struct sockaddr_nl nla
;
682 unsigned char *buf
= NULL
;
685 socklen_t errlen
= sizeof(err
);
688 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
690 handle_hotplug_msg((char *) buf
, size
);
697 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
702 /* Increase rx buffer size on netlink socket */
704 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
715 uloop_fd_delete(&ev
->uloop
);
719 static int system_rtnl_call(struct nl_msg
*msg
)
723 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
729 return nl_wait_for_ack(sock_rtnl
);
732 int system_bridge_delbr(struct device
*bridge
)
734 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
737 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
741 memset(&ifr
, 0, sizeof(ifr
));
743 ifr
.ifr_ifindex
= dev
->ifindex
;
746 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
) - 1);
747 return ioctl(sock_ioctl
, cmd
, &ifr
);
750 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
754 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
755 if (stat(buf
, &st
) < 0)
761 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
767 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
768 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
772 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
780 path
= strrchr(buf
, '/');
788 system_bridge_set_wireless(struct device
*bridge
, struct device
*dev
)
790 bool mcast_to_ucast
= dev
->wireless_ap
;
793 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_TO_UNICAST
&&
794 !bridge
->settings
.multicast_to_unicast
)
795 mcast_to_ucast
= false;
797 if (!mcast_to_ucast
|| dev
->wireless_isolate
)
800 system_bridge_set_multicast_to_unicast(dev
, mcast_to_ucast
? "1" : "0");
801 system_bridge_set_hairpin_mode(dev
, hairpin
? "1" : "0");
804 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
810 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
811 if (!oldbr
|| strcmp(oldbr
, bridge
->ifname
) != 0)
812 ret
= system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
815 system_bridge_set_wireless(bridge
, dev
);
817 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
818 snprintf(buf
, sizeof(buf
), "%u", dev
->settings
.multicast_router
);
819 system_bridge_set_multicast_router(dev
, buf
, false);
822 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_FAST_LEAVE
&&
823 dev
->settings
.multicast_fast_leave
)
824 system_bridge_set_multicast_fast_leave(dev
, "1");
826 if (dev
->settings
.flags
& DEV_OPT_LEARNING
&&
827 !dev
->settings
.learning
)
828 system_bridge_set_learning(dev
, "0");
830 if (dev
->settings
.flags
& DEV_OPT_UNICAST_FLOOD
&&
831 !dev
->settings
.unicast_flood
)
832 system_bridge_set_unicast_flood(dev
, "0");
834 if (dev
->settings
.flags
& DEV_OPT_ISOLATE
&&
835 dev
->settings
.isolate
)
836 system_bridge_set_isolated(dev
, "1");
841 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
843 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
846 int system_if_resolve(struct device
*dev
)
849 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
850 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
851 return ifr
.ifr_ifindex
;
856 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
860 memset(&ifr
, 0, sizeof(ifr
));
861 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
) - 1);
862 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) < 0)
865 ifr
.ifr_flags
|= add
;
866 ifr
.ifr_flags
&= ~rem
;
867 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
879 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
881 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
883 return ifa
->ifa_index
== ifindex
;
886 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
888 struct rtmsg
*r
= NLMSG_DATA(hdr
);
889 struct nlattr
*tb
[__RTA_MAX
];
891 if (r
->rtm_protocol
== RTPROT_KERNEL
&&
892 r
->rtm_family
== AF_INET6
)
895 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
899 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
902 static bool check_rule(struct nlmsghdr
*hdr
, int ifindex
)
907 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
909 struct clear_data
*clr
= arg
;
910 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
911 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
917 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
924 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
931 if (hdr
->nlmsg_type
!= RTM_NEWRULE
)
940 if (!cb(hdr
, clr
->dev
? clr
->dev
->ifindex
: 0))
943 if (type
== RTM_DELRULE
)
944 D(SYSTEM
, "Remove a rule\n");
946 D(SYSTEM
, "Remove %s from device %s\n",
947 type
== RTM_DELADDR
? "an address" : "a route",
950 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
951 hdr
= nlmsg_hdr(clr
->msg
);
952 hdr
->nlmsg_type
= type
;
953 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
955 nl_socket_disable_auto_ack(sock_rtnl
);
956 ret
= nl_send_auto_complete(sock_rtnl
, clr
->msg
);
958 if (type
== RTM_DELRULE
)
959 D(SYSTEM
, "Error deleting a rule: %d\n", ret
);
961 D(SYSTEM
, "Error deleting %s from device '%s': %d\n",
962 type
== RTM_DELADDR
? "an address" : "a route",
963 clr
->dev
->ifname
, ret
);
966 nl_socket_enable_auto_ack(sock_rtnl
);
972 cb_finish_event(struct nl_msg
*msg
, void *arg
)
980 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
983 *pending
= err
->error
;
988 system_if_clear_entries(struct device
*dev
, int type
, int af
)
990 struct clear_data clr
;
994 .rtm_flags
= RTM_F_CLONED
,
996 int flags
= NLM_F_DUMP
;
1005 clr
.size
= sizeof(struct rtgenmsg
);
1008 clr
.size
= sizeof(struct rtmsg
);
1014 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1018 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
1022 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
1023 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
1024 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
1025 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
1027 if (nl_send_auto_complete(sock_rtnl
, clr
.msg
) < 0)
1031 nl_recvmsgs(sock_rtnl
, cb
);
1034 nlmsg_free(clr
.msg
);
1040 * Clear bridge (membership) state and bring down device
1042 void system_if_clear_state(struct device
*dev
)
1044 static char buf
[256];
1046 device_set_ifindex(dev
, system_if_resolve(dev
));
1048 if (dev
->external
|| !dev
->ifindex
)
1051 system_if_flags(dev
->ifname
, 0, IFF_UP
);
1053 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
1054 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
1055 system_bridge_delbr(dev
);
1059 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
1061 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
1062 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
1065 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
1066 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
1067 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
1068 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
1069 system_if_clear_entries(dev
, RTM_GETNEIGH
, AF_INET
);
1070 system_if_clear_entries(dev
, RTM_GETNEIGH
, AF_INET6
);
1071 system_set_disable_ipv6(dev
, "0");
1074 static inline unsigned long
1075 sec_to_jiffies(int val
)
1077 return (unsigned long) val
* 100;
1080 static void system_bridge_conf_multicast_deps(struct device
*bridge
,
1081 struct bridge_config
*cfg
,
1087 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
||
1088 cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
||
1089 cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
1090 val
= cfg
->robustness
* cfg
->query_interval
+
1091 cfg
->query_response_interval
;
1093 snprintf(buf
, buf_len
, "%i", val
);
1094 system_bridge_set_membership_interval(bridge
, buf
);
1096 val
= cfg
->robustness
* cfg
->query_interval
+
1097 cfg
->query_response_interval
/ 2;
1099 snprintf(buf
, buf_len
, "%i", val
);
1100 system_bridge_set_other_querier_timeout(bridge
, buf
);
1103 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
1104 val
= cfg
->query_interval
/ 4;
1106 snprintf(buf
, buf_len
, "%i", val
);
1107 system_bridge_set_startup_query_interval(bridge
, buf
);
1111 static void system_bridge_conf_multicast(struct device
*bridge
,
1112 struct bridge_config
*cfg
,
1116 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
1117 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
1119 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
1120 bridge
->ifname
, cfg
->multicast_querier
? "1" : "0");
1122 snprintf(buf
, buf_len
, "%i", cfg
->hash_max
);
1123 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
1124 bridge
->ifname
, buf
);
1126 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
1127 snprintf(buf
, buf_len
, "%u", bridge
->settings
.multicast_router
);
1128 system_bridge_set_multicast_router(bridge
, buf
, true);
1131 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
) {
1132 snprintf(buf
, buf_len
, "%i", cfg
->robustness
);
1133 system_bridge_set_robustness(bridge
, buf
);
1136 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
1137 snprintf(buf
, buf_len
, "%i", cfg
->query_interval
);
1138 system_bridge_set_query_interval(bridge
, buf
);
1141 if (cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
1142 snprintf(buf
, buf_len
, "%i", cfg
->query_response_interval
);
1143 system_bridge_set_query_response_interval(bridge
, buf
);
1146 if (cfg
->flags
& BRIDGE_OPT_LAST_MEMBER_INTERVAL
) {
1147 snprintf(buf
, buf_len
, "%i", cfg
->last_member_interval
);
1148 system_bridge_set_last_member_interval(bridge
, buf
);
1151 system_bridge_conf_multicast_deps(bridge
, cfg
, buf
, buf_len
);
1154 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
1158 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
1161 system_bridge_set_stp_state(bridge
, cfg
->stp
? "1" : "0");
1163 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->forward_delay
));
1164 system_bridge_set_forward_delay(bridge
, buf
);
1166 system_bridge_conf_multicast(bridge
, cfg
, buf
, sizeof(buf
));
1168 snprintf(buf
, sizeof(buf
), "%d", cfg
->priority
);
1169 system_bridge_set_priority(bridge
, buf
);
1171 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
1172 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->ageing_time
));
1173 system_bridge_set_ageing_time(bridge
, buf
);
1176 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
1177 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->hello_time
));
1178 system_bridge_set_hello_time(bridge
, buf
);
1181 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
1182 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->max_age
));
1183 system_bridge_set_max_age(bridge
, buf
);
1189 int system_macvlan_add(struct device
*macvlan
, struct device
*dev
, struct macvlan_config
*cfg
)
1192 struct nlattr
*linkinfo
, *data
;
1193 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
1195 static const struct {
1197 enum macvlan_mode val
;
1199 { "private", MACVLAN_MODE_PRIVATE
},
1200 { "vepa", MACVLAN_MODE_VEPA
},
1201 { "bridge", MACVLAN_MODE_BRIDGE
},
1202 { "passthru", MACVLAN_MODE_PASSTHRU
},
1205 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1210 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1212 if (cfg
->flags
& MACVLAN_OPT_MACADDR
)
1213 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1214 nla_put_string(msg
, IFLA_IFNAME
, macvlan
->ifname
);
1215 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1217 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1218 goto nla_put_failure
;
1220 nla_put_string(msg
, IFLA_INFO_KIND
, "macvlan");
1222 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1223 goto nla_put_failure
;
1226 for (i
= 0; i
< ARRAY_SIZE(modes
); i
++) {
1227 if (strcmp(cfg
->mode
, modes
[i
].name
) != 0)
1230 nla_put_u32(msg
, IFLA_MACVLAN_MODE
, modes
[i
].val
);
1235 nla_nest_end(msg
, data
);
1236 nla_nest_end(msg
, linkinfo
);
1238 rv
= system_rtnl_call(msg
);
1240 D(SYSTEM
, "Error adding macvlan '%s' over '%s': %d\n", macvlan
->ifname
, dev
->ifname
, rv
);
1249 int system_link_netns_move(const char *ifname
, int netns_fd
)
1252 struct ifinfomsg iim
= {
1253 .ifi_family
= AF_UNSPEC
,
1257 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
);
1262 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1263 nla_put_string(msg
, IFLA_IFNAME
, ifname
);
1264 nla_put_u32(msg
, IFLA_NET_NS_FD
, netns_fd
);
1265 return system_rtnl_call(msg
);
1268 static int system_link_del(const char *ifname
)
1271 struct ifinfomsg iim
= {
1272 .ifi_family
= AF_UNSPEC
,
1276 msg
= nlmsg_alloc_simple(RTM_DELLINK
, NLM_F_REQUEST
);
1281 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1282 nla_put_string(msg
, IFLA_IFNAME
, ifname
);
1283 return system_rtnl_call(msg
);
1286 int system_macvlan_del(struct device
*macvlan
)
1288 return system_link_del(macvlan
->ifname
);
1291 int system_netns_open(const pid_t target_ns
)
1293 char pid_net_path
[PATH_MAX
];
1295 snprintf(pid_net_path
, sizeof(pid_net_path
), "/proc/%u/ns/net", target_ns
);
1297 return open(pid_net_path
, O_RDONLY
);
1300 int system_netns_set(int netns_fd
)
1302 return setns(netns_fd
, CLONE_NEWNET
);
1305 int system_veth_add(struct device
*veth
, struct veth_config
*cfg
)
1308 struct ifinfomsg empty_iim
= {};
1309 struct nlattr
*linkinfo
, *data
, *veth_info
;
1312 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1317 nlmsg_append(msg
, &empty_iim
, sizeof(empty_iim
), 0);
1319 if (cfg
->flags
& VETH_OPT_MACADDR
)
1320 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1321 nla_put_string(msg
, IFLA_IFNAME
, veth
->ifname
);
1323 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1324 goto nla_put_failure
;
1326 nla_put_string(msg
, IFLA_INFO_KIND
, "veth");
1328 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1329 goto nla_put_failure
;
1331 if (!(veth_info
= nla_nest_start(msg
, VETH_INFO_PEER
)))
1332 goto nla_put_failure
;
1334 nlmsg_append(msg
, &empty_iim
, sizeof(empty_iim
), 0);
1336 if (cfg
->flags
& VETH_OPT_PEER_NAME
)
1337 nla_put_string(msg
, IFLA_IFNAME
, cfg
->peer_name
);
1338 if (cfg
->flags
& VETH_OPT_PEER_MACADDR
)
1339 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->peer_macaddr
), cfg
->peer_macaddr
);
1341 nla_nest_end(msg
, veth_info
);
1342 nla_nest_end(msg
, data
);
1343 nla_nest_end(msg
, linkinfo
);
1345 rv
= system_rtnl_call(msg
);
1347 if (cfg
->flags
& VETH_OPT_PEER_NAME
)
1348 D(SYSTEM
, "Error adding veth '%s' with peer '%s': %d\n", veth
->ifname
, cfg
->peer_name
, rv
);
1350 D(SYSTEM
, "Error adding veth '%s': %d\n", veth
->ifname
, rv
);
1360 int system_veth_del(struct device
*veth
)
1362 return system_link_del(veth
->ifname
);
1365 static int system_vlan(struct device
*dev
, int id
)
1367 struct vlan_ioctl_args ifr
= {
1368 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
1369 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
1372 if (ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
) < 0)
1376 ifr
.cmd
= DEL_VLAN_CMD
;
1379 ifr
.cmd
= ADD_VLAN_CMD
;
1382 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
1383 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1386 int system_vlan_add(struct device
*dev
, int id
)
1388 return system_vlan(dev
, id
);
1391 int system_vlan_del(struct device
*dev
)
1393 return system_vlan(dev
, -1);
1396 int system_vlandev_add(struct device
*vlandev
, struct device
*dev
, struct vlandev_config
*cfg
)
1399 struct nlattr
*linkinfo
, *data
;
1400 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
};
1403 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1408 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1409 nla_put_string(msg
, IFLA_IFNAME
, vlandev
->ifname
);
1410 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1412 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1413 goto nla_put_failure
;
1415 nla_put_string(msg
, IFLA_INFO_KIND
, "vlan");
1417 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1418 goto nla_put_failure
;
1420 nla_put_u16(msg
, IFLA_VLAN_ID
, cfg
->vid
);
1422 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1423 nla_put_u16(msg
, IFLA_VLAN_PROTOCOL
, htons(cfg
->proto
));
1425 if(cfg
->proto
== VLAN_PROTO_8021AD
)
1426 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
);
1429 nla_nest_end(msg
, data
);
1430 nla_nest_end(msg
, linkinfo
);
1432 rv
= system_rtnl_call(msg
);
1434 D(SYSTEM
, "Error adding vlandev '%s' over '%s': %d\n", vlandev
->ifname
, dev
->ifname
, rv
);
1443 int system_vlandev_del(struct device
*vlandev
)
1445 return system_link_del(vlandev
->ifname
);
1449 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
1454 memset(&ifr
, 0, sizeof(ifr
));
1455 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1457 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
1458 s
->mtu
= ifr
.ifr_mtu
;
1459 s
->flags
|= DEV_OPT_MTU
;
1462 s
->mtu6
= system_update_ipv6_mtu(dev
, 0);
1464 s
->flags
|= DEV_OPT_MTU6
;
1466 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
1467 s
->txqueuelen
= ifr
.ifr_qlen
;
1468 s
->flags
|= DEV_OPT_TXQUEUELEN
;
1471 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
1472 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
1473 s
->flags
|= DEV_OPT_MACADDR
;
1476 if (!system_get_disable_ipv6(dev
, buf
, sizeof(buf
))) {
1477 s
->ipv6
= !strtoul(buf
, NULL
, 0);
1478 s
->flags
|= DEV_OPT_IPV6
;
1481 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) == 0) {
1482 s
->promisc
= ifr
.ifr_flags
& IFF_PROMISC
;
1483 s
->flags
|= DEV_OPT_PROMISC
;
1485 s
->multicast
= ifr
.ifr_flags
& IFF_MULTICAST
;
1486 s
->flags
|= DEV_OPT_MULTICAST
;
1489 if (!system_get_rpfilter(dev
, buf
, sizeof(buf
))) {
1490 s
->rpfilter
= strtoul(buf
, NULL
, 0);
1491 s
->flags
|= DEV_OPT_RPFILTER
;
1494 if (!system_get_acceptlocal(dev
, buf
, sizeof(buf
))) {
1495 s
->acceptlocal
= strtoul(buf
, NULL
, 0);
1496 s
->flags
|= DEV_OPT_ACCEPTLOCAL
;
1499 if (!system_get_igmpversion(dev
, buf
, sizeof(buf
))) {
1500 s
->igmpversion
= strtoul(buf
, NULL
, 0);
1501 s
->flags
|= DEV_OPT_IGMPVERSION
;
1504 if (!system_get_mldversion(dev
, buf
, sizeof(buf
))) {
1505 s
->mldversion
= strtoul(buf
, NULL
, 0);
1506 s
->flags
|= DEV_OPT_MLDVERSION
;
1509 if (!system_get_neigh4reachabletime(dev
, buf
, sizeof(buf
))) {
1510 s
->neigh4reachabletime
= strtoul(buf
, NULL
, 0);
1511 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1514 if (!system_get_neigh6reachabletime(dev
, buf
, sizeof(buf
))) {
1515 s
->neigh6reachabletime
= strtoul(buf
, NULL
, 0);
1516 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1519 if (!system_get_neigh4locktime(dev
, buf
, sizeof(buf
))) {
1520 s
->neigh4locktime
= strtol(buf
, NULL
, 0);
1521 s
->flags
|= DEV_OPT_NEIGHLOCKTIME
;
1524 if (!system_get_neigh4gcstaletime(dev
, buf
, sizeof(buf
))) {
1525 s
->neigh4gcstaletime
= strtoul(buf
, NULL
, 0);
1526 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1529 if (!system_get_neigh6gcstaletime(dev
, buf
, sizeof(buf
))) {
1530 s
->neigh6gcstaletime
= strtoul(buf
, NULL
, 0);
1531 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1534 if (!system_get_dadtransmits(dev
, buf
, sizeof(buf
))) {
1535 s
->dadtransmits
= strtoul(buf
, NULL
, 0);
1536 s
->flags
|= DEV_OPT_DADTRANSMITS
;
1539 if (!system_get_sendredirects(dev
, buf
, sizeof(buf
))) {
1540 s
->sendredirects
= strtoul(buf
, NULL
, 0);
1541 s
->flags
|= DEV_OPT_SENDREDIRECTS
;
1546 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
, unsigned int apply_mask
)
1551 memset(&ifr
, 0, sizeof(ifr
));
1552 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1553 if (s
->flags
& DEV_OPT_MTU
& apply_mask
) {
1554 ifr
.ifr_mtu
= s
->mtu
;
1555 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
1556 s
->flags
&= ~DEV_OPT_MTU
;
1558 if (s
->flags
& DEV_OPT_MTU6
& apply_mask
) {
1559 system_update_ipv6_mtu(dev
, s
->mtu6
);
1561 if (s
->flags
& DEV_OPT_TXQUEUELEN
& apply_mask
) {
1562 ifr
.ifr_qlen
= s
->txqueuelen
;
1563 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
1564 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
1566 if ((s
->flags
& DEV_OPT_MACADDR
& apply_mask
) && !dev
->external
) {
1567 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
1568 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
1569 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
1570 s
->flags
&= ~DEV_OPT_MACADDR
;
1572 if (s
->flags
& DEV_OPT_IPV6
& apply_mask
)
1573 system_set_disable_ipv6(dev
, s
->ipv6
? "0" : "1");
1574 if (s
->flags
& DEV_OPT_PROMISC
& apply_mask
) {
1575 if (system_if_flags(dev
->ifname
, s
->promisc
? IFF_PROMISC
: 0,
1576 !s
->promisc
? IFF_PROMISC
: 0) < 0)
1577 s
->flags
&= ~DEV_OPT_PROMISC
;
1579 if (s
->flags
& DEV_OPT_RPFILTER
& apply_mask
) {
1580 snprintf(buf
, sizeof(buf
), "%u", s
->rpfilter
);
1581 system_set_rpfilter(dev
, buf
);
1583 if (s
->flags
& DEV_OPT_ACCEPTLOCAL
& apply_mask
)
1584 system_set_acceptlocal(dev
, s
->acceptlocal
? "1" : "0");
1585 if (s
->flags
& DEV_OPT_IGMPVERSION
& apply_mask
) {
1586 snprintf(buf
, sizeof(buf
), "%u", s
->igmpversion
);
1587 system_set_igmpversion(dev
, buf
);
1589 if (s
->flags
& DEV_OPT_MLDVERSION
& apply_mask
) {
1590 snprintf(buf
, sizeof(buf
), "%u", s
->mldversion
);
1591 system_set_mldversion(dev
, buf
);
1593 if (s
->flags
& DEV_OPT_NEIGHREACHABLETIME
& apply_mask
) {
1594 snprintf(buf
, sizeof(buf
), "%u", s
->neigh4reachabletime
);
1595 system_set_neigh4reachabletime(dev
, buf
);
1596 snprintf(buf
, sizeof(buf
), "%u", s
->neigh6reachabletime
);
1597 system_set_neigh6reachabletime(dev
, buf
);
1599 if (s
->flags
& DEV_OPT_NEIGHLOCKTIME
& apply_mask
) {
1600 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4locktime
);
1601 system_set_neigh4locktime(dev
, buf
);
1603 if (s
->flags
& DEV_OPT_NEIGHGCSTALETIME
& apply_mask
) {
1604 snprintf(buf
, sizeof(buf
), "%u", s
->neigh4gcstaletime
);
1605 system_set_neigh4gcstaletime(dev
, buf
);
1606 snprintf(buf
, sizeof(buf
), "%u", s
->neigh6gcstaletime
);
1607 system_set_neigh6gcstaletime(dev
, buf
);
1609 if (s
->flags
& DEV_OPT_DADTRANSMITS
& apply_mask
) {
1610 snprintf(buf
, sizeof(buf
), "%u", s
->dadtransmits
);
1611 system_set_dadtransmits(dev
, buf
);
1613 if (s
->flags
& DEV_OPT_MULTICAST
& apply_mask
) {
1614 if (system_if_flags(dev
->ifname
, s
->multicast
? IFF_MULTICAST
: 0,
1615 !s
->multicast
? IFF_MULTICAST
: 0) < 0)
1616 s
->flags
&= ~DEV_OPT_MULTICAST
;
1618 if (s
->flags
& DEV_OPT_SENDREDIRECTS
& apply_mask
)
1619 system_set_sendredirects(dev
, s
->sendredirects
? "1" : "0");
1622 int system_if_up(struct device
*dev
)
1624 system_if_get_settings(dev
, &dev
->orig_settings
);
1625 /* Only keep orig settings based on what needs to be set */
1626 dev
->orig_settings
.valid_flags
= dev
->orig_settings
.flags
;
1627 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
1628 system_if_apply_settings(dev
, &dev
->settings
, dev
->settings
.flags
);
1629 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
1632 int system_if_down(struct device
*dev
)
1634 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
1635 system_if_apply_settings(dev
, &dev
->orig_settings
, dev
->orig_settings
.flags
);
1639 struct if_check_data
{
1645 #ifndef IFF_LOWER_UP
1646 #define IFF_LOWER_UP 0x10000
1649 static int cb_if_check_valid(struct nl_msg
*msg
, void *arg
)
1651 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
1652 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
1653 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1655 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
1658 device_set_present(chk
->dev
, ifi
->ifi_index
> 0 ? true : false);
1659 device_set_link(chk
->dev
, ifi
->ifi_flags
& IFF_LOWER_UP
? true : false);
1664 static int cb_if_check_ack(struct nl_msg
*msg
, void *arg
)
1666 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1671 static int cb_if_check_error(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
1673 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1675 device_set_present(chk
->dev
, false);
1676 device_set_link(chk
->dev
, false);
1677 chk
->pending
= err
->error
;
1682 int system_if_check(struct device
*dev
)
1684 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1686 struct ifinfomsg ifi
= {
1687 .ifi_family
= AF_UNSPEC
,
1690 struct if_check_data chk
= {
1699 msg
= nlmsg_alloc_simple(RTM_GETLINK
, 0);
1703 if (nlmsg_append(msg
, &ifi
, sizeof(ifi
), 0) ||
1704 nla_put_string(msg
, IFLA_IFNAME
, dev
->ifname
))
1707 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_if_check_valid
, &chk
);
1708 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, cb_if_check_ack
, &chk
);
1709 nl_cb_err(cb
, NL_CB_CUSTOM
, cb_if_check_error
, &chk
);
1711 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
1715 while (chk
.pending
> 0)
1716 nl_recvmsgs(sock_rtnl
, cb
);
1728 system_if_get_parent(struct device
*dev
)
1730 char buf
[64], *devname
;
1731 int ifindex
, iflink
, len
;
1734 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
1735 f
= fopen(buf
, "r");
1739 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
1746 iflink
= strtoul(buf
, NULL
, 0);
1747 ifindex
= system_if_resolve(dev
);
1748 if (!iflink
|| iflink
== ifindex
)
1751 devname
= if_indextoname(iflink
, buf
);
1755 return device_get(devname
, true);
1759 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
1765 fd
= openat(dir_fd
, file
, O_RDONLY
);
1770 len
= read(fd
, buf
, len
- 1);
1774 } else if (len
> 0) {
1777 c
= strchr(buf
, '\n');
1790 read_uint64_file(int dir_fd
, const char *file
, uint64_t *val
)
1795 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
1797 *val
= strtoull(buf
, NULL
, 0);
1802 /* Assume advertised flags == supported flags */
1803 static const struct {
1806 } ethtool_link_modes
[] = {
1807 { ADVERTISED_10baseT_Half
, "10baseT-H" },
1808 { ADVERTISED_10baseT_Full
, "10baseT-F" },
1809 { ADVERTISED_100baseT_Half
, "100baseT-H" },
1810 { ADVERTISED_100baseT_Full
, "100baseT-F" },
1811 { ADVERTISED_1000baseT_Half
, "1000baseT-H" },
1812 { ADVERTISED_1000baseT_Full
, "1000baseT-F" },
1813 { ADVERTISED_1000baseKX_Full
, "1000baseKX-F" },
1814 { ADVERTISED_2500baseX_Full
, "2500baseX-F" },
1815 { ADVERTISED_10000baseT_Full
, "10000baseT-F" },
1816 { ADVERTISED_10000baseKX4_Full
, "10000baseKX4-F" },
1817 { ADVERTISED_10000baseKR_Full
, "10000baseKR-F" },
1818 { ADVERTISED_20000baseMLD2_Full
, "20000baseMLD2-F" },
1819 { ADVERTISED_20000baseKR2_Full
, "20000baseKR2-F" },
1820 { ADVERTISED_40000baseKR4_Full
, "40000baseKR4-F" },
1821 { ADVERTISED_40000baseCR4_Full
, "40000baseCR4-F" },
1822 { ADVERTISED_40000baseSR4_Full
, "40000baseSR4-F" },
1823 { ADVERTISED_40000baseLR4_Full
, "40000baseLR4-F" },
1824 #ifdef ADVERTISED_56000baseKR4_Full
1825 { ADVERTISED_56000baseKR4_Full
, "56000baseKR4-F" },
1826 { ADVERTISED_56000baseCR4_Full
, "56000baseCR4-F" },
1827 { ADVERTISED_56000baseSR4_Full
, "56000baseSR4-F" },
1828 { ADVERTISED_56000baseLR4_Full
, "56000baseLR4-F" },
1832 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
1835 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
1836 if (mask
& ethtool_link_modes
[i
].mask
)
1837 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
1842 system_if_force_external(const char *ifname
)
1847 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/phy80211", ifname
);
1848 return stat(buf
, &s
) == 0;
1852 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
1854 struct ethtool_cmd ecmd
;
1859 memset(&ecmd
, 0, sizeof(ecmd
));
1860 memset(&ifr
, 0, sizeof(ifr
));
1861 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1862 ifr
.ifr_data
= (caddr_t
) &ecmd
;
1863 ecmd
.cmd
= ETHTOOL_GSET
;
1865 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
1866 c
= blobmsg_open_array(b
, "link-advertising");
1867 system_add_link_modes(b
, ecmd
.advertising
);
1868 blobmsg_close_array(b
, c
);
1870 c
= blobmsg_open_array(b
, "link-partner-advertising");
1871 system_add_link_modes(b
, ecmd
.lp_advertising
);
1872 blobmsg_close_array(b
, c
);
1874 c
= blobmsg_open_array(b
, "link-supported");
1875 system_add_link_modes(b
, ecmd
.supported
);
1876 blobmsg_close_array(b
, c
);
1878 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
1879 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
1880 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
1881 blobmsg_add_string_buffer(b
);
1883 blobmsg_add_u8(b
, "autoneg", !!ecmd
.autoneg
);
1890 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
1892 const char *const counters
[] = {
1893 "collisions", "rx_frame_errors", "tx_compressed",
1894 "multicast", "rx_length_errors", "tx_dropped",
1895 "rx_bytes", "rx_missed_errors", "tx_errors",
1896 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1897 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1898 "rx_dropped", "tx_aborted_errors", "tx_packets",
1899 "rx_errors", "tx_bytes", "tx_window_errors",
1900 "rx_fifo_errors", "tx_carrier_errors",
1907 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
1908 stats_dir
= open(buf
, O_DIRECTORY
);
1912 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
1913 if (read_uint64_file(stats_dir
, counters
[i
], &val
))
1914 blobmsg_add_u64(b
, counters
[i
], val
);
1920 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
1922 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
1923 int alen
= v4
? 4 : 16;
1924 unsigned int flags
= 0;
1925 struct ifaddrmsg ifa
= {
1926 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1927 .ifa_prefixlen
= addr
->mask
,
1928 .ifa_index
= dev
->ifindex
,
1932 if (cmd
== RTM_NEWADDR
)
1933 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1935 msg
= nlmsg_alloc_simple(cmd
, flags
);
1939 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
1940 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
1942 if (addr
->broadcast
)
1943 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
1944 if (addr
->point_to_point
)
1945 nla_put_u32(msg
, IFA_ADDRESS
, addr
->point_to_point
);
1947 time_t now
= system_get_rtime();
1948 struct ifa_cacheinfo cinfo
= {0xffffffffU
, 0xffffffffU
, 0, 0};
1950 if (addr
->preferred_until
) {
1951 int64_t preferred
= addr
->preferred_until
- now
;
1954 else if (preferred
> UINT32_MAX
)
1955 preferred
= UINT32_MAX
;
1957 cinfo
.ifa_prefered
= preferred
;
1960 if (addr
->valid_until
) {
1961 int64_t valid
= addr
->valid_until
- now
;
1966 else if (valid
> UINT32_MAX
)
1969 cinfo
.ifa_valid
= valid
;
1972 nla_put(msg
, IFA_CACHEINFO
, sizeof(cinfo
), &cinfo
);
1974 if (cmd
== RTM_NEWADDR
&& (addr
->flags
& DEVADDR_OFFLINK
))
1975 nla_put_u32(msg
, IFA_FLAGS
, IFA_F_NOPREFIXROUTE
);
1978 return system_rtnl_call(msg
);
1981 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
1983 return system_addr(dev
, addr
, RTM_NEWADDR
);
1986 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
1988 return system_addr(dev
, addr
, RTM_DELADDR
);
1991 static int system_neigh(struct device
*dev
, struct device_neighbor
*neighbor
, int cmd
)
1993 int alen
= ((neighbor
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
1994 unsigned int flags
= 0;
1995 struct ndmsg ndm
= {
1996 .ndm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1997 .ndm_ifindex
= dev
->ifindex
,
1998 .ndm_state
= NUD_PERMANENT
,
1999 .ndm_flags
= (neighbor
->proxy
? NTF_PROXY
: 0) | (neighbor
->router
? NTF_ROUTER
: 0),
2003 if (cmd
== RTM_NEWNEIGH
)
2004 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
2006 msg
= nlmsg_alloc_simple(cmd
, flags
);
2011 nlmsg_append(msg
, &ndm
, sizeof(ndm
), 0);
2013 nla_put(msg
, NDA_DST
, alen
, &neighbor
->addr
);
2014 if (neighbor
->flags
& DEVNEIGH_MAC
)
2015 nla_put(msg
, NDA_LLADDR
, sizeof(neighbor
->macaddr
), &neighbor
->macaddr
);
2018 return system_rtnl_call(msg
);
2021 int system_add_neighbor(struct device
*dev
, struct device_neighbor
*neighbor
)
2023 return system_neigh(dev
, neighbor
, RTM_NEWNEIGH
);
2026 int system_del_neighbor(struct device
*dev
, struct device_neighbor
*neighbor
)
2028 return system_neigh(dev
, neighbor
, RTM_DELNEIGH
);
2031 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
2033 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
2035 unsigned int flags
= 0;
2038 have_gw
= !!route
->nexthop
.in
.s_addr
;
2040 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
2041 route
->nexthop
.in6
.s6_addr32
[1] ||
2042 route
->nexthop
.in6
.s6_addr32
[2] ||
2043 route
->nexthop
.in6
.s6_addr32
[3];
2045 unsigned int table
= (route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))
2046 ? route
->table
: RT_TABLE_MAIN
;
2048 struct rtmsg rtm
= {
2049 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
2050 .rtm_dst_len
= route
->mask
,
2051 .rtm_src_len
= route
->sourcemask
,
2052 .rtm_table
= (table
< 256) ? table
: RT_TABLE_UNSPEC
,
2053 .rtm_protocol
= (route
->flags
& DEVROUTE_PROTO
) ? route
->proto
: RTPROT_STATIC
,
2054 .rtm_scope
= RT_SCOPE_NOWHERE
,
2055 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
2056 .rtm_flags
= (route
->flags
& DEVROUTE_ONLINK
) ? RTNH_F_ONLINK
: 0,
2060 if (cmd
== RTM_NEWROUTE
) {
2061 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
2063 if (!dev
) { /* Add null-route */
2064 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
2065 rtm
.rtm_type
= RTN_UNREACHABLE
;
2068 rtm
.rtm_scope
= (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
2071 if (route
->flags
& DEVROUTE_TYPE
) {
2072 rtm
.rtm_type
= route
->type
;
2073 if (!(route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))) {
2074 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_BROADCAST
||
2075 rtm
.rtm_type
== RTN_NAT
|| rtm
.rtm_type
== RTN_ANYCAST
)
2076 rtm
.rtm_table
= RT_TABLE_LOCAL
;
2079 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_NAT
) {
2080 rtm
.rtm_scope
= RT_SCOPE_HOST
;
2081 } else if (rtm
.rtm_type
== RTN_BROADCAST
|| rtm
.rtm_type
== RTN_MULTICAST
||
2082 rtm
.rtm_type
== RTN_ANYCAST
) {
2083 rtm
.rtm_scope
= RT_SCOPE_LINK
;
2084 } else if (rtm
.rtm_type
== RTN_BLACKHOLE
|| rtm
.rtm_type
== RTN_UNREACHABLE
||
2085 rtm
.rtm_type
== RTN_PROHIBIT
|| rtm
.rtm_type
== RTN_FAILED_POLICY
||
2086 rtm
.rtm_type
== RTN_THROW
) {
2087 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
2092 msg
= nlmsg_alloc_simple(cmd
, flags
);
2096 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
2099 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
2101 if (route
->sourcemask
) {
2102 if (rtm
.rtm_family
== AF_INET
)
2103 nla_put(msg
, RTA_PREFSRC
, alen
, &route
->source
);
2105 nla_put(msg
, RTA_SRC
, alen
, &route
->source
);
2108 if (route
->metric
> 0)
2109 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
2112 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
2115 nla_put_u32(msg
, RTA_OIF
, dev
->ifindex
);
2118 nla_put_u32(msg
, RTA_TABLE
, table
);
2120 if (route
->flags
& DEVROUTE_MTU
) {
2121 struct nlattr
*metrics
;
2123 if (!(metrics
= nla_nest_start(msg
, RTA_METRICS
)))
2124 goto nla_put_failure
;
2126 nla_put_u32(msg
, RTAX_MTU
, route
->mtu
);
2128 nla_nest_end(msg
, metrics
);
2131 return system_rtnl_call(msg
);
2138 int system_add_route(struct device
*dev
, struct device_route
*route
)
2140 return system_rt(dev
, route
, RTM_NEWROUTE
);
2143 int system_del_route(struct device
*dev
, struct device_route
*route
)
2145 return system_rt(dev
, route
, RTM_DELROUTE
);
2148 int system_flush_routes(void)
2150 const char *names
[] = {
2151 "/proc/sys/net/ipv4/route/flush",
2152 "/proc/sys/net/ipv6/route/flush"
2156 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
2157 fd
= open(names
[i
], O_WRONLY
);
2161 if (write(fd
, "-1", 2)) {}
2167 bool system_resolve_rt_type(const char *type
, unsigned int *id
)
2169 return system_rtn_aton(type
, id
);
2172 bool system_resolve_rt_proto(const char *type
, unsigned int *id
)
2176 unsigned int n
, proto
= 256;
2177 n
= strtoul(type
, &e
, 0);
2178 if (!*e
&& e
!= type
)
2180 else if (!strcmp(type
, "unspec"))
2181 proto
= RTPROT_UNSPEC
;
2182 else if (!strcmp(type
, "kernel"))
2183 proto
= RTPROT_KERNEL
;
2184 else if (!strcmp(type
, "boot"))
2185 proto
= RTPROT_BOOT
;
2186 else if (!strcmp(type
, "static"))
2187 proto
= RTPROT_STATIC
;
2188 else if ((f
= fopen("/etc/iproute2/rt_protos", "r")) != NULL
) {
2189 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
) {
2190 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
2193 n
= strtoul(e
, NULL
, 10);
2194 e
= strtok(NULL
, " \t\n");
2196 if (e
&& !strcmp(e
, type
)) {
2211 bool system_resolve_rt_table(const char *name
, unsigned int *id
)
2215 unsigned int n
, table
= RT_TABLE_UNSPEC
;
2217 /* first try to parse table as number */
2218 if ((n
= strtoul(name
, &e
, 0)) > 0 && !*e
)
2221 /* handle well known aliases */
2222 else if (!strcmp(name
, "default"))
2223 table
= RT_TABLE_DEFAULT
;
2224 else if (!strcmp(name
, "main"))
2225 table
= RT_TABLE_MAIN
;
2226 else if (!strcmp(name
, "local"))
2227 table
= RT_TABLE_LOCAL
;
2229 /* try to look up name in /etc/iproute2/rt_tables */
2230 else if ((f
= fopen("/etc/iproute2/rt_tables", "r")) != NULL
)
2232 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
)
2234 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
2237 n
= strtoul(e
, NULL
, 10);
2238 e
= strtok(NULL
, " \t\n");
2240 if (e
&& !strcmp(e
, name
))
2250 if (table
== RT_TABLE_UNSPEC
)
2257 bool system_is_default_rt_table(unsigned int id
)
2259 return (id
== RT_TABLE_MAIN
);
2262 bool system_resolve_rpfilter(const char *filter
, unsigned int *id
)
2267 if (!strcmp(filter
, "strict"))
2269 else if (!strcmp(filter
, "loose"))
2272 n
= strtoul(filter
, &e
, 0);
2273 if (*e
|| e
== filter
|| n
> 2)
2281 static int system_iprule(struct iprule
*rule
, int cmd
)
2283 int alen
= ((rule
->flags
& IPRULE_FAMILY
) == IPRULE_INET4
) ? 4 : 16;
2286 struct rtmsg rtm
= {
2287 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
2288 .rtm_protocol
= RTPROT_STATIC
,
2289 .rtm_scope
= RT_SCOPE_UNIVERSE
,
2290 .rtm_table
= RT_TABLE_UNSPEC
,
2291 .rtm_type
= RTN_UNSPEC
,
2295 if (cmd
== RTM_NEWRULE
)
2296 rtm
.rtm_type
= RTN_UNICAST
;
2299 rtm
.rtm_flags
|= FIB_RULE_INVERT
;
2301 if (rule
->flags
& IPRULE_SRC
)
2302 rtm
.rtm_src_len
= rule
->src_mask
;
2304 if (rule
->flags
& IPRULE_DEST
)
2305 rtm
.rtm_dst_len
= rule
->dest_mask
;
2307 if (rule
->flags
& IPRULE_TOS
)
2308 rtm
.rtm_tos
= rule
->tos
;
2310 if (rule
->flags
& IPRULE_LOOKUP
) {
2311 if (rule
->lookup
< 256)
2312 rtm
.rtm_table
= rule
->lookup
;
2315 if (rule
->flags
& IPRULE_ACTION
)
2316 rtm
.rtm_type
= rule
->action
;
2317 else if (rule
->flags
& IPRULE_GOTO
)
2318 rtm
.rtm_type
= FR_ACT_GOTO
;
2319 else if (!(rule
->flags
& (IPRULE_LOOKUP
| IPRULE_ACTION
| IPRULE_GOTO
)))
2320 rtm
.rtm_type
= FR_ACT_NOP
;
2322 msg
= nlmsg_alloc_simple(cmd
, NLM_F_REQUEST
);
2327 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
2329 if (rule
->flags
& IPRULE_IN
)
2330 nla_put(msg
, FRA_IFNAME
, strlen(rule
->in_dev
) + 1, rule
->in_dev
);
2332 if (rule
->flags
& IPRULE_OUT
)
2333 nla_put(msg
, FRA_OIFNAME
, strlen(rule
->out_dev
) + 1, rule
->out_dev
);
2335 if (rule
->flags
& IPRULE_SRC
)
2336 nla_put(msg
, FRA_SRC
, alen
, &rule
->src_addr
);
2338 if (rule
->flags
& IPRULE_DEST
)
2339 nla_put(msg
, FRA_DST
, alen
, &rule
->dest_addr
);
2341 if (rule
->flags
& IPRULE_PRIORITY
)
2342 nla_put_u32(msg
, FRA_PRIORITY
, rule
->priority
);
2343 else if (cmd
== RTM_NEWRULE
)
2344 nla_put_u32(msg
, FRA_PRIORITY
, rule
->order
);
2346 if (rule
->flags
& IPRULE_FWMARK
)
2347 nla_put_u32(msg
, FRA_FWMARK
, rule
->fwmark
);
2349 if (rule
->flags
& IPRULE_FWMASK
)
2350 nla_put_u32(msg
, FRA_FWMASK
, rule
->fwmask
);
2352 if (rule
->flags
& IPRULE_LOOKUP
) {
2353 if (rule
->lookup
>= 256)
2354 nla_put_u32(msg
, FRA_TABLE
, rule
->lookup
);
2357 if (rule
->flags
& IPRULE_SUP_PREFIXLEN
)
2358 nla_put_u32(msg
, FRA_SUPPRESS_PREFIXLEN
, rule
->sup_prefixlen
);
2360 if (rule
->flags
& IPRULE_GOTO
)
2361 nla_put_u32(msg
, FRA_GOTO
, rule
->gotoid
);
2363 return system_rtnl_call(msg
);
2366 int system_add_iprule(struct iprule
*rule
)
2368 return system_iprule(rule
, RTM_NEWRULE
);
2371 int system_del_iprule(struct iprule
*rule
)
2373 return system_iprule(rule
, RTM_DELRULE
);
2376 int system_flush_iprules(void)
2381 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET
);
2382 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET6
);
2384 memset(&rule
, 0, sizeof(rule
));
2387 rule
.flags
= IPRULE_INET4
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2390 rule
.lookup
= RT_TABLE_LOCAL
;
2391 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2393 rule
.priority
= 32766;
2394 rule
.lookup
= RT_TABLE_MAIN
;
2395 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2397 rule
.priority
= 32767;
2398 rule
.lookup
= RT_TABLE_DEFAULT
;
2399 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2402 rule
.flags
= IPRULE_INET6
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2405 rule
.lookup
= RT_TABLE_LOCAL
;
2406 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2408 rule
.priority
= 32766;
2409 rule
.lookup
= RT_TABLE_MAIN
;
2410 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2415 bool system_resolve_iprule_action(const char *action
, unsigned int *id
)
2417 return system_rtn_aton(action
, id
);
2420 time_t system_get_rtime(void)
2425 if (clock_gettime(CLOCK_MONOTONIC
, &ts
) == 0)
2428 if (gettimeofday(&tv
, NULL
) == 0)
2435 #define IP_DF 0x4000
2438 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
2442 memset(&ifr
, 0, sizeof(ifr
));
2443 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
) - 1);
2444 ifr
.ifr_ifru
.ifru_data
= p
;
2445 return ioctl(sock_ioctl
, cmd
, &ifr
);
2448 #ifdef IFLA_IPTUN_MAX
2449 static int system_add_ip6_tunnel(const char *name
, const unsigned int link
,
2450 struct blob_attr
**tb
)
2452 struct nl_msg
*nlm
= nlmsg_alloc_simple(RTM_NEWLINK
,
2453 NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2454 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
};
2455 struct blob_attr
*cur
;
2456 int ret
= 0, ttl
= 0;
2461 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2462 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2465 nla_put_u32(nlm
, IFLA_LINK
, link
);
2467 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2473 nla_put_string(nlm
, IFLA_INFO_KIND
, "ip6tnl");
2474 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2481 nla_put_u32(nlm
, IFLA_IPTUN_LINK
, link
);
2483 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2484 ttl
= blobmsg_get_u32(cur
);
2486 nla_put_u8(nlm
, IFLA_IPTUN_PROTO
, IPPROTO_IPIP
);
2487 nla_put_u8(nlm
, IFLA_IPTUN_TTL
, (ttl
) ? ttl
: 64);
2489 struct in6_addr in6buf
;
2490 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2491 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2495 nla_put(nlm
, IFLA_IPTUN_LOCAL
, sizeof(in6buf
), &in6buf
);
2498 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2499 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2503 nla_put(nlm
, IFLA_IPTUN_REMOTE
, sizeof(in6buf
), &in6buf
);
2506 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2507 struct blob_attr
*tb_data
[__IPIP6_DATA_ATTR_MAX
];
2508 uint32_t tun_flags
= IP6_TNL_F_IGN_ENCAP_LIMIT
;
2510 blobmsg_parse(ipip6_data_attr_list
.params
, __IPIP6_DATA_ATTR_MAX
, tb_data
,
2511 blobmsg_data(cur
), blobmsg_len(cur
));
2513 if ((cur
= tb_data
[IPIP6_DATA_ENCAPLIMIT
])) {
2514 char *str
= blobmsg_get_string(cur
);
2516 if (strcmp(str
, "ignore")) {
2518 unsigned encap_limit
= strtoul(str
, &e
, 0);
2520 if (e
== str
|| *e
|| encap_limit
> 255) {
2525 nla_put_u8(nlm
, IFLA_IPTUN_ENCAP_LIMIT
, encap_limit
);
2526 tun_flags
&= ~IP6_TNL_F_IGN_ENCAP_LIMIT
;
2530 #ifdef IFLA_IPTUN_FMR_MAX
2531 if ((cur
= tb_data
[IPIP6_DATA_FMRS
])) {
2532 struct blob_attr
*rcur
;
2533 unsigned rrem
, fmrcnt
= 0;
2534 struct nlattr
*fmrs
= nla_nest_start(nlm
, IFLA_IPTUN_FMRS
);
2541 blobmsg_for_each_attr(rcur
, cur
, rrem
) {
2542 struct blob_attr
*tb_fmr
[__FMR_DATA_ATTR_MAX
], *tb_cur
;
2543 struct in6_addr ip6prefix
;
2544 struct in_addr ip4prefix
;
2545 unsigned ip4len
, ip6len
, ealen
, offset
;
2547 blobmsg_parse(fmr_data_attr_list
.params
, __FMR_DATA_ATTR_MAX
, tb_fmr
,
2548 blobmsg_data(rcur
), blobmsg_len(rcur
));
2550 if (!(tb_cur
= tb_fmr
[FMR_DATA_PREFIX6
]) ||
2551 !parse_ip_and_netmask(AF_INET6
,
2552 blobmsg_data(tb_cur
), &ip6prefix
,
2558 if (!(tb_cur
= tb_fmr
[FMR_DATA_PREFIX4
]) ||
2559 !parse_ip_and_netmask(AF_INET
,
2560 blobmsg_data(tb_cur
), &ip4prefix
,
2566 if (!(tb_cur
= tb_fmr
[FMR_DATA_EALEN
])) {
2570 ealen
= blobmsg_get_u32(tb_cur
);
2572 if (!(tb_cur
= tb_fmr
[FMR_DATA_OFFSET
])) {
2576 offset
= blobmsg_get_u32(tb_cur
);
2578 struct nlattr
*rule
= nla_nest_start(nlm
, ++fmrcnt
);
2584 nla_put(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX
, sizeof(ip6prefix
), &ip6prefix
);
2585 nla_put(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX
, sizeof(ip4prefix
), &ip4prefix
);
2586 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX_LEN
, ip6len
);
2587 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX_LEN
, ip4len
);
2588 nla_put_u8(nlm
, IFLA_IPTUN_FMR_EA_LEN
, ealen
);
2589 nla_put_u8(nlm
, IFLA_IPTUN_FMR_OFFSET
, offset
);
2591 nla_nest_end(nlm
, rule
);
2594 nla_nest_end(nlm
, fmrs
);
2598 nla_put_u32(nlm
, IFLA_IPTUN_FLAGS
, tun_flags
);
2601 nla_nest_end(nlm
, infodata
);
2602 nla_nest_end(nlm
, linkinfo
);
2604 return system_rtnl_call(nlm
);
2612 #ifdef IFLA_IPTUN_MAX
2613 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
2614 static int system_add_gre_tunnel(const char *name
, const char *kind
,
2615 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2618 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2619 struct blob_attr
*cur
;
2620 uint32_t ikey
= 0, okey
= 0, flowinfo
= 0, flags6
= IP6_TNL_F_IGN_ENCAP_LIMIT
;
2621 uint16_t iflags
= 0, oflags
= 0;
2623 int ret
= 0, ttl
= 0;
2624 unsigned encap_limit
= 0;
2626 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2630 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2631 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2633 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2639 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2640 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2647 nla_put_u32(nlm
, IFLA_GRE_LINK
, link
);
2649 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2650 ttl
= blobmsg_get_u32(cur
);
2652 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2653 char *str
= blobmsg_get_string(cur
);
2654 if (strcmp(str
, "inherit")) {
2657 if (!system_tos_aton(str
, &uval
)) {
2663 flowinfo
|= htonl(uval
<< 20) & IP6_FLOWINFO_TCLASS
;
2668 flags6
|= IP6_TNL_F_USE_ORIG_TCLASS
;
2674 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2675 struct blob_attr
*tb_data
[__GRE_DATA_ATTR_MAX
];
2677 blobmsg_parse(gre_data_attr_list
.params
, __GRE_DATA_ATTR_MAX
, tb_data
,
2678 blobmsg_data(cur
), blobmsg_len(cur
));
2680 if ((cur
= tb_data
[GRE_DATA_IKEY
])) {
2681 if ((ikey
= blobmsg_get_u32(cur
)))
2685 if ((cur
= tb_data
[GRE_DATA_OKEY
])) {
2686 if ((okey
= blobmsg_get_u32(cur
)))
2690 if ((cur
= tb_data
[GRE_DATA_ICSUM
])) {
2691 if (blobmsg_get_bool(cur
))
2695 if ((cur
= tb_data
[GRE_DATA_OCSUM
])) {
2696 if (blobmsg_get_bool(cur
))
2700 if ((cur
= tb_data
[GRE_DATA_ISEQNO
])) {
2701 if (blobmsg_get_bool(cur
))
2705 if ((cur
= tb_data
[GRE_DATA_OSEQNO
])) {
2706 if (blobmsg_get_bool(cur
))
2710 if ((cur
= tb_data
[GRE_DATA_ENCAPLIMIT
])) {
2711 char *str
= blobmsg_get_string(cur
);
2713 if (strcmp(str
, "ignore")) {
2716 encap_limit
= strtoul(str
, &e
, 0);
2718 if (e
== str
|| *e
|| encap_limit
> 255) {
2723 flags6
&= ~IP6_TNL_F_IGN_ENCAP_LIMIT
;
2729 struct in6_addr in6buf
;
2730 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2731 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2735 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(in6buf
), &in6buf
);
2738 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2739 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2743 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(in6buf
), &in6buf
);
2746 if (!(flags6
& IP6_TNL_F_IGN_ENCAP_LIMIT
))
2747 nla_put_u8(nlm
, IFLA_GRE_ENCAP_LIMIT
, encap_limit
);
2750 nla_put_u32(nlm
, IFLA_GRE_FLOWINFO
, flowinfo
);
2753 nla_put_u32(nlm
, IFLA_GRE_FLAGS
, flags6
);
2758 struct in_addr inbuf
;
2761 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2762 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2766 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(inbuf
), &inbuf
);
2769 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2770 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2774 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(inbuf
), &inbuf
);
2776 if (IN_MULTICAST(ntohl(inbuf
.s_addr
))) {
2778 okey
= inbuf
.s_addr
;
2783 ikey
= inbuf
.s_addr
;
2789 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2790 set_df
= blobmsg_get_bool(cur
);
2793 /* ttl != 0 and nopmtudisc are incompatible */
2801 nla_put_u8(nlm
, IFLA_GRE_PMTUDISC
, set_df
? 1 : 0);
2803 nla_put_u8(nlm
, IFLA_GRE_TOS
, tos
);
2807 nla_put_u8(nlm
, IFLA_GRE_TTL
, ttl
);
2810 nla_put_u16(nlm
, IFLA_GRE_OFLAGS
, oflags
);
2813 nla_put_u16(nlm
, IFLA_GRE_IFLAGS
, iflags
);
2816 nla_put_u32(nlm
, IFLA_GRE_OKEY
, htonl(okey
));
2819 nla_put_u32(nlm
, IFLA_GRE_IKEY
, htonl(ikey
));
2821 nla_nest_end(nlm
, infodata
);
2822 nla_nest_end(nlm
, linkinfo
);
2824 return system_rtnl_call(nlm
);
2833 static int system_add_vti_tunnel(const char *name
, const char *kind
,
2834 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2837 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2838 struct blob_attr
*cur
;
2841 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2845 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2846 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2848 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2854 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2855 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2862 nla_put_u32(nlm
, IFLA_VTI_LINK
, link
);
2865 struct in6_addr in6buf
;
2866 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2867 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2871 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(in6buf
), &in6buf
);
2874 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2875 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2879 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(in6buf
), &in6buf
);
2883 struct in_addr inbuf
;
2885 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2886 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2890 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(inbuf
), &inbuf
);
2893 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2894 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2898 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(inbuf
), &inbuf
);
2903 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2904 struct blob_attr
*tb_data
[__VTI_DATA_ATTR_MAX
];
2905 uint32_t ikey
= 0, okey
= 0;
2907 blobmsg_parse(vti_data_attr_list
.params
, __VTI_DATA_ATTR_MAX
, tb_data
,
2908 blobmsg_data(cur
), blobmsg_len(cur
));
2910 if ((cur
= tb_data
[VTI_DATA_IKEY
])) {
2911 if ((ikey
= blobmsg_get_u32(cur
)))
2912 nla_put_u32(nlm
, IFLA_VTI_IKEY
, htonl(ikey
));
2915 if ((cur
= tb_data
[VTI_DATA_OKEY
])) {
2916 if ((okey
= blobmsg_get_u32(cur
)))
2917 nla_put_u32(nlm
, IFLA_VTI_OKEY
, htonl(okey
));
2921 nla_nest_end(nlm
, infodata
);
2922 nla_nest_end(nlm
, linkinfo
);
2924 return system_rtnl_call(nlm
);
2932 #ifdef IFLA_XFRM_MAX
2933 static int system_add_xfrm_tunnel(const char *name
, const char *kind
,
2934 const unsigned int link
, struct blob_attr
**tb
)
2937 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2938 struct blob_attr
*cur
;
2941 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2945 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2946 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2948 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2954 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2955 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2962 nla_put_u32(nlm
, IFLA_XFRM_LINK
, link
);
2964 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2965 struct blob_attr
*tb_data
[__XFRM_DATA_ATTR_MAX
];
2968 blobmsg_parse(xfrm_data_attr_list
.params
, __XFRM_DATA_ATTR_MAX
, tb_data
,
2969 blobmsg_data(cur
), blobmsg_len(cur
));
2971 if ((cur
= tb_data
[XFRM_DATA_IF_ID
])) {
2972 if ((if_id
= blobmsg_get_u32(cur
)))
2973 nla_put_u32(nlm
, IFLA_XFRM_IF_ID
, if_id
);
2978 nla_nest_end(nlm
, infodata
);
2979 nla_nest_end(nlm
, linkinfo
);
2981 return system_rtnl_call(nlm
);
2989 #ifdef IFLA_VXLAN_MAX
2990 static int system_add_vxlan(const char *name
, const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2992 struct blob_attr
*tb_data
[__VXLAN_DATA_ATTR_MAX
];
2994 struct nlattr
*linkinfo
, *data
;
2995 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
2996 struct blob_attr
*cur
;
2999 if ((cur
= tb
[TUNNEL_ATTR_DATA
]))
3000 blobmsg_parse(vxlan_data_attr_list
.params
, __VXLAN_DATA_ATTR_MAX
, tb_data
,
3001 blobmsg_data(cur
), blobmsg_len(cur
));
3005 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
3010 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
3012 nla_put_string(msg
, IFLA_IFNAME
, name
);
3014 if ((cur
= tb_data
[VXLAN_DATA_ATTR_MACADDR
])) {
3015 struct ether_addr
*ea
= ether_aton(blobmsg_get_string(cur
));
3021 nla_put(msg
, IFLA_ADDRESS
, ETH_ALEN
, ea
);
3024 if ((cur
= tb
[TUNNEL_ATTR_MTU
])) {
3025 uint32_t mtu
= blobmsg_get_u32(cur
);
3026 nla_put_u32(msg
, IFLA_MTU
, mtu
);
3029 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
))) {
3034 nla_put_string(msg
, IFLA_INFO_KIND
, "vxlan");
3036 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
))) {
3042 nla_put_u32(msg
, IFLA_VXLAN_LINK
, link
);
3044 if ((cur
= tb_data
[VXLAN_DATA_ATTR_ID
])) {
3045 uint32_t id
= blobmsg_get_u32(cur
);
3046 if (id
>= (1u << 24) - 1) {
3051 nla_put_u32(msg
, IFLA_VXLAN_ID
, id
);
3055 struct in6_addr in6buf
;
3056 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
3057 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
3061 nla_put(msg
, IFLA_VXLAN_LOCAL6
, sizeof(in6buf
), &in6buf
);
3064 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
3065 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
3069 nla_put(msg
, IFLA_VXLAN_GROUP6
, sizeof(in6buf
), &in6buf
);
3072 struct in_addr inbuf
;
3074 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
3075 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
3079 nla_put(msg
, IFLA_VXLAN_LOCAL
, sizeof(inbuf
), &inbuf
);
3082 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
3083 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
3087 nla_put(msg
, IFLA_VXLAN_GROUP
, sizeof(inbuf
), &inbuf
);
3091 uint32_t port
= 4789;
3092 if ((cur
= tb_data
[VXLAN_DATA_ATTR_PORT
])) {
3093 port
= blobmsg_get_u32(cur
);
3094 if (port
< 1 || port
> 65535) {
3099 nla_put_u16(msg
, IFLA_VXLAN_PORT
, htons(port
));
3101 if ((cur
= tb_data
[VXLAN_DATA_ATTR_RXCSUM
])) {
3102 bool rxcsum
= blobmsg_get_bool(cur
);
3103 nla_put_u8(msg
, IFLA_VXLAN_UDP_ZERO_CSUM6_RX
, !rxcsum
);
3106 if ((cur
= tb_data
[VXLAN_DATA_ATTR_TXCSUM
])) {
3107 bool txcsum
= blobmsg_get_bool(cur
);
3108 nla_put_u8(msg
, IFLA_VXLAN_UDP_CSUM
, txcsum
);
3109 nla_put_u8(msg
, IFLA_VXLAN_UDP_ZERO_CSUM6_TX
, !txcsum
);
3112 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
3113 char *str
= blobmsg_get_string(cur
);
3116 if (strcmp(str
, "inherit")) {
3117 if (!system_tos_aton(str
, &tos
)) {
3123 nla_put_u8(msg
, IFLA_VXLAN_TOS
, tos
);
3126 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
3127 uint32_t ttl
= blobmsg_get_u32(cur
);
3128 if (ttl
< 1 || ttl
> 255) {
3133 nla_put_u8(msg
, IFLA_VXLAN_TTL
, ttl
);
3136 nla_nest_end(msg
, data
);
3137 nla_nest_end(msg
, linkinfo
);
3139 ret
= system_rtnl_call(msg
);
3141 D(SYSTEM
, "Error adding vxlan '%s': %d\n", name
, ret
);
3151 static int system_add_sit_tunnel(const char *name
, const unsigned int link
, struct blob_attr
**tb
)
3153 struct blob_attr
*cur
;
3156 if (system_add_proto_tunnel(name
, IPPROTO_IPV6
, link
, tb
) < 0)
3160 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
3161 struct blob_attr
*tb_data
[__SIXRD_DATA_ATTR_MAX
];
3163 struct ip_tunnel_6rd p6
;
3165 blobmsg_parse(sixrd_data_attr_list
.params
, __SIXRD_DATA_ATTR_MAX
, tb_data
,
3166 blobmsg_data(cur
), blobmsg_len(cur
));
3168 memset(&p6
, 0, sizeof(p6
));
3170 if ((cur
= tb_data
[SIXRD_DATA_PREFIX
])) {
3171 if (!parse_ip_and_netmask(AF_INET6
, blobmsg_data(cur
),
3172 &p6
.prefix
, &mask
) || mask
> 128) {
3177 p6
.prefixlen
= mask
;
3180 if ((cur
= tb_data
[SIXRD_DATA_RELAY_PREFIX
])) {
3181 if (!parse_ip_and_netmask(AF_INET
, blobmsg_data(cur
),
3182 &p6
.relay_prefix
, &mask
) || mask
> 32) {
3187 p6
.relay_prefixlen
= mask
;
3190 if (tunnel_ioctl(name
, SIOCADD6RD
, &p6
) < 0) {
3200 __system_del_ip_tunnel(name
, tb
);
3204 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
, const unsigned int link
, struct blob_attr
**tb
)
3206 struct blob_attr
*cur
;
3208 struct ip_tunnel_parm p
= {
3217 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
]) &&
3218 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.saddr
) < 1)
3221 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
]) &&
3222 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.daddr
) < 1)
3225 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
3226 set_df
= blobmsg_get_bool(cur
);
3228 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
3229 p
.iph
.ttl
= blobmsg_get_u32(cur
);
3231 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
3232 char *str
= blobmsg_get_string(cur
);
3233 if (strcmp(str
, "inherit")) {
3236 if (!system_tos_aton(str
, &uval
))
3244 p
.iph
.frag_off
= set_df
? htons(IP_DF
) : 0;
3245 /* ttl !=0 and nopmtudisc are incompatible */
3246 if (p
.iph
.ttl
&& p
.iph
.frag_off
== 0)
3249 strncpy(p
.name
, name
, sizeof(p
.name
) - 1);
3251 switch (p
.iph
.protocol
) {
3253 return tunnel_ioctl("tunl0", SIOCADDTUNNEL
, &p
);
3255 return tunnel_ioctl("sit0", SIOCADDTUNNEL
, &p
);
3262 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
)
3264 struct blob_attr
*cur
;
3267 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
3269 str
= blobmsg_data(cur
);
3271 if (!strcmp(str
, "greip") || !strcmp(str
, "gretapip") ||
3272 !strcmp(str
, "greip6") || !strcmp(str
, "gretapip6") ||
3273 !strcmp(str
, "vtiip") || !strcmp(str
, "vtiip6") ||
3274 !strcmp(str
, "vxlan") || !strcmp(str
, "vxlan6") ||
3275 !strcmp(str
, "xfrm"))
3276 return system_link_del(name
);
3278 return tunnel_ioctl(name
, SIOCDELTUNNEL
, NULL
);
3281 int system_del_ip_tunnel(const char *name
, struct blob_attr
*attr
)
3283 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
3285 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
3286 blob_data(attr
), blob_len(attr
));
3288 return __system_del_ip_tunnel(name
, tb
);
3291 int system_update_ipv6_mtu(struct device
*dev
, int mtu
)
3297 snprintf(buf
, sizeof(buf
), "/proc/sys/net/ipv6/conf/%s/mtu",
3300 fd
= open(buf
, O_RDWR
);
3305 ssize_t len
= read(fd
, buf
, sizeof(buf
) - 1);
3312 if (write(fd
, buf
, snprintf(buf
, sizeof(buf
), "%i", mtu
)) > 0)
3321 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
3323 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
3324 struct blob_attr
*cur
;
3327 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
3328 blob_data(attr
), blob_len(attr
));
3330 __system_del_ip_tunnel(name
, tb
);
3332 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
3334 str
= blobmsg_data(cur
);
3336 unsigned int ttl
= 0;
3337 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
3338 ttl
= blobmsg_get_u32(cur
);
3343 unsigned int link
= 0;
3344 if ((cur
= tb
[TUNNEL_ATTR_LINK
])) {
3345 struct interface
*iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
3349 if (iface
->l3_dev
.dev
)
3350 link
= iface
->l3_dev
.dev
->ifindex
;
3353 if (!strcmp(str
, "sit"))
3354 return system_add_sit_tunnel(name
, link
, tb
);
3355 #ifdef IFLA_IPTUN_MAX
3356 else if (!strcmp(str
, "ipip6")) {
3357 return system_add_ip6_tunnel(name
, link
, tb
);
3358 } else if (!strcmp(str
, "greip")) {
3359 return system_add_gre_tunnel(name
, "gre", link
, tb
, false);
3360 } else if (!strcmp(str
, "gretapip")) {
3361 return system_add_gre_tunnel(name
, "gretap", link
, tb
, false);
3362 } else if (!strcmp(str
, "greip6")) {
3363 return system_add_gre_tunnel(name
, "ip6gre", link
, tb
, true);
3364 } else if (!strcmp(str
, "gretapip6")) {
3365 return system_add_gre_tunnel(name
, "ip6gretap", link
, tb
, true);
3367 } else if (!strcmp(str
, "vtiip")) {
3368 return system_add_vti_tunnel(name
, "vti", link
, tb
, false);
3369 } else if (!strcmp(str
, "vtiip6")) {
3370 return system_add_vti_tunnel(name
, "vti6", link
, tb
, true);
3372 #ifdef IFLA_XFRM_MAX
3373 } else if (!strcmp(str
, "xfrm")) {
3374 return system_add_xfrm_tunnel(name
, "xfrm", link
, tb
);
3376 #ifdef IFLA_VXLAN_MAX
3377 } else if(!strcmp(str
, "vxlan")) {
3378 return system_add_vxlan(name
, link
, tb
, false);
3379 } else if(!strcmp(str
, "vxlan6")) {
3380 return system_add_vxlan(name
, link
, tb
, true);
3383 } else if (!strcmp(str
, "ipip")) {
3384 return system_add_proto_tunnel(name
, IPPROTO_IPIP
, link
, tb
);