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>
29 #include <arpa/inet.h>
30 #include <netinet/ether.h>
31 #include <netinet/in.h>
33 #include <linux/rtnetlink.h>
34 #include <linux/neighbour.h>
35 #include <linux/sockios.h>
37 #include <linux/if_addr.h>
38 #include <linux/if_link.h>
39 #include <linux/if_vlan.h>
40 #include <linux/if_bridge.h>
41 #include <linux/if_tunnel.h>
42 #include <linux/ip6_tunnel.h>
43 #include <linux/ethtool.h>
44 #include <linux/fib_rules.h>
45 #include <linux/veth.h>
46 #include <linux/version.h>
48 #ifndef RTN_FAILED_POLICY
49 #define RTN_FAILED_POLICY 12
52 #ifndef IFA_F_NOPREFIXROUTE
53 #define IFA_F_NOPREFIXROUTE 0x200
57 #define IFA_FLAGS (IFA_MULTICAST + 1)
66 #include <netlink/msg.h>
67 #include <netlink/attr.h>
68 #include <netlink/socket.h>
69 #include <libubox/uloop.h>
76 struct uloop_fd uloop
;
81 static int sock_ioctl
= -1;
82 static struct nl_sock
*sock_rtnl
= NULL
;
84 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
);
85 static void handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
);
86 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
,
87 const unsigned int link
, struct blob_attr
**tb
);
88 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
);
90 static char dev_buf
[256];
93 handler_nl_event(struct uloop_fd
*u
, unsigned int events
)
95 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
97 socklen_t errlen
= sizeof(err
);
100 nl_recvmsgs_default(ev
->sock
);
104 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
109 /* Increase rx buffer size on netlink socket */
111 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
114 /* Request full dump since some info got dropped */
115 struct rtgenmsg msg
= { .rtgen_family
= AF_UNSPEC
};
116 nl_send_simple(ev
->sock
, RTM_GETLINK
, NLM_F_DUMP
, &msg
, sizeof(msg
));
126 uloop_fd_delete(&ev
->uloop
);
130 static struct nl_sock
*
131 create_socket(int protocol
, int groups
)
133 struct nl_sock
*sock
;
135 sock
= nl_socket_alloc();
140 nl_join_groups(sock
, groups
);
142 if (nl_connect(sock
, protocol
))
149 create_raw_event_socket(struct event_socket
*ev
, int protocol
, int groups
,
150 uloop_fd_handler cb
, int flags
)
152 ev
->sock
= create_socket(protocol
, groups
);
156 ev
->uloop
.fd
= nl_socket_get_fd(ev
->sock
);
158 if (uloop_fd_add(&ev
->uloop
, ULOOP_READ
|flags
))
165 create_event_socket(struct event_socket
*ev
, int protocol
,
166 int (*cb
)(struct nl_msg
*msg
, void *arg
))
168 if (!create_raw_event_socket(ev
, protocol
, 0, handler_nl_event
, ULOOP_ERROR_CB
))
171 /* Install the valid custom callback handler */
172 nl_socket_modify_cb(ev
->sock
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, NULL
);
174 /* Disable sequence number checking on event sockets */
175 nl_socket_disable_seq_check(ev
->sock
);
177 /* Increase rx buffer size to 65K on event sockets */
179 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
186 create_hotplug_event_socket(struct event_socket
*ev
, int protocol
,
187 void (*cb
)(struct uloop_fd
*u
, unsigned int events
))
189 if (!create_raw_event_socket(ev
, protocol
, 1, cb
, ULOOP_ERROR_CB
))
192 /* Increase rx buffer size to 65K on event sockets */
194 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
201 system_rtn_aton(const char *src
, unsigned int *dst
)
206 if (!strcmp(src
, "local"))
208 else if (!strcmp(src
, "nat"))
210 else if (!strcmp(src
, "broadcast"))
212 else if (!strcmp(src
, "anycast"))
214 else if (!strcmp(src
, "multicast"))
216 else if (!strcmp(src
, "prohibit"))
218 else if (!strcmp(src
, "unreachable"))
220 else if (!strcmp(src
, "blackhole"))
222 else if (!strcmp(src
, "xresolve"))
224 else if (!strcmp(src
, "unicast"))
226 else if (!strcmp(src
, "throw"))
228 else if (!strcmp(src
, "failed_policy"))
229 n
= RTN_FAILED_POLICY
;
231 n
= strtoul(src
, &e
, 0);
232 if (!e
|| *e
|| e
== src
|| n
> 255)
241 system_tos_aton(const char *src
, unsigned *dst
)
245 *dst
= strtoul(src
, &e
, 16);
246 if (e
== src
|| *e
|| *dst
> 255)
252 int system_init(void)
254 static struct event_socket rtnl_event
;
255 static struct event_socket hotplug_event
;
257 sock_ioctl
= socket(AF_LOCAL
, SOCK_DGRAM
, 0);
258 system_fd_set_cloexec(sock_ioctl
);
260 /* Prepare socket for routing / address control */
261 sock_rtnl
= create_socket(NETLINK_ROUTE
, 0);
265 if (!create_event_socket(&rtnl_event
, NETLINK_ROUTE
, cb_rtnl_event
))
268 if (!create_hotplug_event_socket(&hotplug_event
, NETLINK_KOBJECT_UEVENT
,
269 handle_hotplug_event
))
272 /* Receive network link events form kernel */
273 nl_socket_add_membership(rtnl_event
.sock
, RTNLGRP_LINK
);
278 static void system_set_sysctl(const char *path
, const char *val
)
282 fd
= open(path
, O_WRONLY
);
286 if (write(fd
, val
, strlen(val
))) {}
290 static void system_set_dev_sysctl(const char *path
, const char *device
, const char *val
)
292 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
293 system_set_sysctl(dev_buf
, val
);
296 static void system_set_disable_ipv6(struct device
*dev
, const char *val
)
298 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev
->ifname
, val
);
301 static void system_set_rpfilter(struct device
*dev
, const char *val
)
303 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter", dev
->ifname
, val
);
306 static void system_set_acceptlocal(struct device
*dev
, const char *val
)
308 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local", dev
->ifname
, val
);
311 static void system_set_igmpversion(struct device
*dev
, const char *val
)
313 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version", dev
->ifname
, val
);
316 static void system_set_mldversion(struct device
*dev
, const char *val
)
318 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version", dev
->ifname
, val
);
321 static void system_set_neigh4reachabletime(struct device
*dev
, const char *val
)
323 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
326 static void system_set_neigh6reachabletime(struct device
*dev
, const char *val
)
328 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
331 static void system_set_neigh4gcstaletime(struct device
*dev
, const char *val
)
333 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time", dev
->ifname
, val
);
336 static void system_set_neigh6gcstaletime(struct device
*dev
, const char *val
)
338 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time", dev
->ifname
, val
);
341 static void system_set_neigh4locktime(struct device
*dev
, const char *val
)
343 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime", dev
->ifname
, val
);
346 static void system_set_dadtransmits(struct device
*dev
, const char *val
)
348 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits", dev
->ifname
, val
);
351 static void system_bridge_set_multicast_to_unicast(struct device
*dev
, const char *val
)
353 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_to_unicast", dev
->ifname
, val
);
356 static void system_bridge_set_multicast_fast_leave(struct device
*dev
, const char *val
)
358 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_fast_leave", dev
->ifname
, val
);
361 static void system_bridge_set_hairpin_mode(struct device
*dev
, const char *val
)
363 system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev
->ifname
, val
);
366 static void system_bridge_set_isolated(struct device
*dev
, const char *val
)
368 system_set_dev_sysctl("/sys/class/net/%s/brport/isolated", dev
->ifname
, val
);
371 static void system_bridge_set_multicast_router(struct device
*dev
, const char *val
, bool bridge
)
373 system_set_dev_sysctl(bridge
? "/sys/class/net/%s/bridge/multicast_router" :
374 "/sys/class/net/%s/brport/multicast_router",
378 static void system_bridge_set_robustness(struct device
*dev
, const char *val
)
380 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_count",
382 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_count",
386 static void system_bridge_set_query_interval(struct device
*dev
, const char *val
)
388 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_interval",
392 static void system_bridge_set_query_response_interval(struct device
*dev
, const char *val
)
394 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_response_interval",
398 static void system_bridge_set_last_member_interval(struct device
*dev
, const char *val
)
400 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_interval",
404 static void system_bridge_set_membership_interval(struct device
*dev
, const char *val
)
406 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_membership_interval",
410 static void system_bridge_set_other_querier_timeout(struct device
*dev
, const char *val
)
412 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier_interval",
416 static void system_bridge_set_startup_query_interval(struct device
*dev
, const char *val
)
418 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_interval",
422 static void system_bridge_set_stp_state(struct device
*dev
, const char *val
)
424 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/stp_state", dev
->ifname
, val
);
427 static void system_bridge_set_forward_delay(struct device
*dev
, const char *val
)
429 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/forward_delay", dev
->ifname
, val
);
432 static void system_bridge_set_priority(struct device
*dev
, const char *val
)
434 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/priority", dev
->ifname
, val
);
437 static void system_bridge_set_ageing_time(struct device
*dev
, const char *val
)
439 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/ageing_time", dev
->ifname
, val
);
442 static void system_bridge_set_hello_time(struct device
*dev
, const char *val
)
444 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hello_time", dev
->ifname
, val
);
447 static void system_bridge_set_max_age(struct device
*dev
, const char *val
)
449 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/max_age", dev
->ifname
, val
);
452 static void system_bridge_set_learning(struct device
*dev
, const char *val
)
454 system_set_dev_sysctl("/sys/class/net/%s/brport/learning", dev
->ifname
, val
);
457 static void system_bridge_set_unicast_flood(struct device
*dev
, const char *val
)
459 system_set_dev_sysctl("/sys/class/net/%s/brport/unicast_flood", dev
->ifname
, val
);
462 static void system_set_sendredirects(struct device
*dev
, const char *val
)
464 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects", dev
->ifname
, val
);
467 static int system_get_sysctl(const char *path
, char *buf
, const size_t buf_sz
)
469 int fd
= -1, ret
= -1;
471 fd
= open(path
, O_RDONLY
);
475 ssize_t len
= read(fd
, buf
, buf_sz
- 1);
489 system_get_dev_sysctl(const char *path
, const char *device
, char *buf
, const size_t buf_sz
)
491 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
492 return system_get_sysctl(dev_buf
, buf
, buf_sz
);
495 static int system_get_disable_ipv6(struct device
*dev
, char *buf
, const size_t buf_sz
)
497 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
498 dev
->ifname
, buf
, buf_sz
);
501 static int system_get_rpfilter(struct device
*dev
, char *buf
, const size_t buf_sz
)
503 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
504 dev
->ifname
, buf
, buf_sz
);
507 static int system_get_acceptlocal(struct device
*dev
, char *buf
, const size_t buf_sz
)
509 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
510 dev
->ifname
, buf
, buf_sz
);
513 static int system_get_igmpversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
515 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
516 dev
->ifname
, buf
, buf_sz
);
519 static int system_get_mldversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
521 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
522 dev
->ifname
, buf
, buf_sz
);
525 static int system_get_neigh4reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
527 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
528 dev
->ifname
, buf
, buf_sz
);
531 static int system_get_neigh6reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
533 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
534 dev
->ifname
, buf
, buf_sz
);
537 static int system_get_neigh4gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
539 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time",
540 dev
->ifname
, buf
, buf_sz
);
543 static int system_get_neigh6gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
545 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time",
546 dev
->ifname
, buf
, buf_sz
);
549 static int system_get_neigh4locktime(struct device
*dev
, char *buf
, const size_t buf_sz
)
551 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime",
552 dev
->ifname
, buf
, buf_sz
);
555 static int system_get_dadtransmits(struct device
*dev
, char *buf
, const size_t buf_sz
)
557 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
558 dev
->ifname
, buf
, buf_sz
);
561 static int system_get_sendredirects(struct device
*dev
, char *buf
, const size_t buf_sz
)
563 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects",
564 dev
->ifname
, buf
, buf_sz
);
567 /* Evaluate netlink messages */
568 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
570 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
571 struct nlattr
*nla
[__IFLA_MAX
];
575 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
578 nlmsg_parse(nh
, sizeof(struct ifinfomsg
), nla
, __IFLA_MAX
- 1, NULL
);
579 if (!nla
[IFLA_IFNAME
])
582 struct device
*dev
= device_find(nla_data(nla
[IFLA_IFNAME
]));
586 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev
->ifname
, buf
, sizeof(buf
)))
587 link_state
= strtoul(buf
, NULL
, 0);
589 device_set_link(dev
, link_state
? true : false);
596 handle_hotplug_msg(char *data
, int size
)
598 const char *subsystem
= NULL
, *interface
= NULL
, *interface_old
= NULL
;
599 char *cur
, *end
, *sep
;
602 bool add
, move
= false;
604 if (!strncmp(data
, "add@", 4))
606 else if (!strncmp(data
, "remove@", 7))
608 else if (!strncmp(data
, "move@", 5)) {
615 skip
= strlen(data
) + 1;
618 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
619 skip
= strlen(cur
) + 1;
621 sep
= strchr(cur
, '=');
626 if (!strcmp(cur
, "INTERFACE"))
628 else if (!strcmp(cur
, "SUBSYSTEM")) {
630 if (strcmp(subsystem
, "net") != 0)
632 } else if (!strcmp(cur
, "DEVPATH_OLD")) {
633 interface_old
= strrchr(sep
+ 1, '/');
639 if (subsystem
&& interface
) {
640 if (move
&& interface_old
)
649 dev
= device_find(interface_old
);
653 if (dev
->type
!= &simple_device_type
)
656 device_set_present(dev
, false);
659 dev
= device_find(interface
);
663 if (dev
->type
!= &simple_device_type
)
666 if (add
&& system_if_force_external(dev
->ifname
))
669 device_set_present(dev
, add
);
673 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
675 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
676 struct sockaddr_nl nla
;
677 unsigned char *buf
= NULL
;
680 socklen_t errlen
= sizeof(err
);
683 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
685 handle_hotplug_msg((char *) buf
, size
);
692 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
697 /* Increase rx buffer size on netlink socket */
699 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
710 uloop_fd_delete(&ev
->uloop
);
714 static int system_rtnl_call(struct nl_msg
*msg
)
718 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
724 return nl_wait_for_ack(sock_rtnl
);
727 int system_bridge_delbr(struct device
*bridge
)
729 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
732 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
736 memset(&ifr
, 0, sizeof(ifr
));
738 ifr
.ifr_ifindex
= dev
->ifindex
;
741 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
) - 1);
742 return ioctl(sock_ioctl
, cmd
, &ifr
);
745 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
749 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
750 if (stat(buf
, &st
) < 0)
756 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
762 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
763 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
767 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
775 path
= strrchr(buf
, '/');
783 system_bridge_set_wireless(struct device
*bridge
, struct device
*dev
)
785 bool mcast_to_ucast
= dev
->wireless_ap
;
788 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_TO_UNICAST
&&
789 !bridge
->settings
.multicast_to_unicast
)
790 mcast_to_ucast
= false;
792 if (!mcast_to_ucast
|| dev
->wireless_isolate
)
795 system_bridge_set_multicast_to_unicast(dev
, mcast_to_ucast
? "1" : "0");
796 system_bridge_set_hairpin_mode(dev
, hairpin
? "1" : "0");
799 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
805 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
806 if (!oldbr
|| strcmp(oldbr
, bridge
->ifname
) != 0)
807 ret
= system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
810 system_bridge_set_wireless(bridge
, dev
);
812 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
813 snprintf(buf
, sizeof(buf
), "%u", dev
->settings
.multicast_router
);
814 system_bridge_set_multicast_router(dev
, buf
, false);
817 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_FAST_LEAVE
&&
818 dev
->settings
.multicast_fast_leave
)
819 system_bridge_set_multicast_fast_leave(dev
, "1");
821 if (dev
->settings
.flags
& DEV_OPT_LEARNING
&&
822 !dev
->settings
.learning
)
823 system_bridge_set_learning(dev
, "0");
825 if (dev
->settings
.flags
& DEV_OPT_UNICAST_FLOOD
&&
826 !dev
->settings
.unicast_flood
)
827 system_bridge_set_unicast_flood(dev
, "0");
829 if (dev
->settings
.flags
& DEV_OPT_ISOLATE
&&
830 dev
->settings
.isolate
)
831 system_bridge_set_isolated(dev
, "1");
836 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
838 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
841 int system_if_resolve(struct device
*dev
)
844 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
845 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
846 return ifr
.ifr_ifindex
;
851 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
855 memset(&ifr
, 0, sizeof(ifr
));
856 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
) - 1);
857 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) < 0)
860 ifr
.ifr_flags
|= add
;
861 ifr
.ifr_flags
&= ~rem
;
862 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
874 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
876 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
878 return ifa
->ifa_index
== ifindex
;
881 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
883 struct rtmsg
*r
= NLMSG_DATA(hdr
);
884 struct nlattr
*tb
[__RTA_MAX
];
886 if (r
->rtm_protocol
== RTPROT_KERNEL
&&
887 r
->rtm_family
== AF_INET6
)
890 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
894 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
897 static bool check_rule(struct nlmsghdr
*hdr
, int ifindex
)
902 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
904 struct clear_data
*clr
= arg
;
905 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
906 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
912 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
919 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
926 if (hdr
->nlmsg_type
!= RTM_NEWRULE
)
935 if (!cb(hdr
, clr
->dev
? clr
->dev
->ifindex
: 0))
938 if (type
== RTM_DELRULE
)
939 D(SYSTEM
, "Remove a rule\n");
941 D(SYSTEM
, "Remove %s from device %s\n",
942 type
== RTM_DELADDR
? "an address" : "a route",
944 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
945 hdr
= nlmsg_hdr(clr
->msg
);
946 hdr
->nlmsg_type
= type
;
947 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
949 nl_socket_disable_auto_ack(sock_rtnl
);
950 nl_send_auto_complete(sock_rtnl
, clr
->msg
);
951 nl_socket_enable_auto_ack(sock_rtnl
);
957 cb_finish_event(struct nl_msg
*msg
, void *arg
)
965 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
968 *pending
= err
->error
;
973 system_if_clear_entries(struct device
*dev
, int type
, int af
)
975 struct clear_data clr
;
976 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
979 .rtm_flags
= RTM_F_CLONED
,
981 int flags
= NLM_F_DUMP
;
990 clr
.size
= sizeof(struct rtgenmsg
);
993 clr
.size
= sizeof(struct rtmsg
);
1002 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
1006 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
1007 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
1008 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
1009 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
1011 nl_send_auto_complete(sock_rtnl
, clr
.msg
);
1013 nl_recvmsgs(sock_rtnl
, cb
);
1015 nlmsg_free(clr
.msg
);
1021 * Clear bridge (membership) state and bring down device
1023 void system_if_clear_state(struct device
*dev
)
1025 static char buf
[256];
1027 device_set_ifindex(dev
, system_if_resolve(dev
));
1029 if (dev
->external
|| !dev
->ifindex
)
1032 system_if_flags(dev
->ifname
, 0, IFF_UP
);
1034 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
1035 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
1036 system_bridge_delbr(dev
);
1040 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
1042 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
1043 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
1046 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
1047 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
1048 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
1049 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
1050 system_if_clear_entries(dev
, RTM_GETNEIGH
, AF_INET
);
1051 system_if_clear_entries(dev
, RTM_GETNEIGH
, AF_INET6
);
1052 system_set_disable_ipv6(dev
, "0");
1055 static inline unsigned long
1056 sec_to_jiffies(int val
)
1058 return (unsigned long) val
* 100;
1061 static void system_bridge_conf_multicast_deps(struct device
*bridge
,
1062 struct bridge_config
*cfg
,
1068 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
||
1069 cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
||
1070 cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
1071 val
= cfg
->robustness
* cfg
->query_interval
+
1072 cfg
->query_response_interval
;
1074 snprintf(buf
, buf_len
, "%i", val
);
1075 system_bridge_set_membership_interval(bridge
, buf
);
1077 val
= cfg
->robustness
* cfg
->query_interval
+
1078 cfg
->query_response_interval
/ 2;
1080 snprintf(buf
, buf_len
, "%i", val
);
1081 system_bridge_set_other_querier_timeout(bridge
, buf
);
1084 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
1085 val
= cfg
->query_interval
/ 4;
1087 snprintf(buf
, buf_len
, "%i", val
);
1088 system_bridge_set_startup_query_interval(bridge
, buf
);
1092 static void system_bridge_conf_multicast(struct device
*bridge
,
1093 struct bridge_config
*cfg
,
1097 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
1098 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
1100 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
1101 bridge
->ifname
, cfg
->multicast_querier
? "1" : "0");
1103 snprintf(buf
, buf_len
, "%i", cfg
->hash_max
);
1104 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
1105 bridge
->ifname
, buf
);
1107 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
1108 snprintf(buf
, buf_len
, "%u", bridge
->settings
.multicast_router
);
1109 system_bridge_set_multicast_router(bridge
, buf
, true);
1112 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
) {
1113 snprintf(buf
, buf_len
, "%i", cfg
->robustness
);
1114 system_bridge_set_robustness(bridge
, buf
);
1117 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
1118 snprintf(buf
, buf_len
, "%i", cfg
->query_interval
);
1119 system_bridge_set_query_interval(bridge
, buf
);
1122 if (cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
1123 snprintf(buf
, buf_len
, "%i", cfg
->query_response_interval
);
1124 system_bridge_set_query_response_interval(bridge
, buf
);
1127 if (cfg
->flags
& BRIDGE_OPT_LAST_MEMBER_INTERVAL
) {
1128 snprintf(buf
, buf_len
, "%i", cfg
->last_member_interval
);
1129 system_bridge_set_last_member_interval(bridge
, buf
);
1132 system_bridge_conf_multicast_deps(bridge
, cfg
, buf
, buf_len
);
1135 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
1139 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
1142 system_bridge_set_stp_state(bridge
, cfg
->stp
? "1" : "0");
1144 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->forward_delay
));
1145 system_bridge_set_forward_delay(bridge
, buf
);
1147 system_bridge_conf_multicast(bridge
, cfg
, buf
, sizeof(buf
));
1149 snprintf(buf
, sizeof(buf
), "%d", cfg
->priority
);
1150 system_bridge_set_priority(bridge
, buf
);
1152 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
1153 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->ageing_time
));
1154 system_bridge_set_ageing_time(bridge
, buf
);
1157 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
1158 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->hello_time
));
1159 system_bridge_set_hello_time(bridge
, buf
);
1162 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
1163 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->max_age
));
1164 system_bridge_set_max_age(bridge
, buf
);
1170 int system_macvlan_add(struct device
*macvlan
, struct device
*dev
, struct macvlan_config
*cfg
)
1173 struct nlattr
*linkinfo
, *data
;
1174 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
1176 static const struct {
1178 enum macvlan_mode val
;
1180 { "private", MACVLAN_MODE_PRIVATE
},
1181 { "vepa", MACVLAN_MODE_VEPA
},
1182 { "bridge", MACVLAN_MODE_BRIDGE
},
1183 { "passthru", MACVLAN_MODE_PASSTHRU
},
1186 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1191 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1193 if (cfg
->flags
& MACVLAN_OPT_MACADDR
)
1194 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1195 nla_put_string(msg
, IFLA_IFNAME
, macvlan
->ifname
);
1196 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1198 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1199 goto nla_put_failure
;
1201 nla_put_string(msg
, IFLA_INFO_KIND
, "macvlan");
1203 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1204 goto nla_put_failure
;
1207 for (i
= 0; i
< ARRAY_SIZE(modes
); i
++) {
1208 if (strcmp(cfg
->mode
, modes
[i
].name
) != 0)
1211 nla_put_u32(msg
, IFLA_MACVLAN_MODE
, modes
[i
].val
);
1216 nla_nest_end(msg
, data
);
1217 nla_nest_end(msg
, linkinfo
);
1219 rv
= system_rtnl_call(msg
);
1221 D(SYSTEM
, "Error adding macvlan '%s' over '%s': %d\n", macvlan
->ifname
, dev
->ifname
, rv
);
1230 static int system_link_del(const char *ifname
)
1233 struct ifinfomsg iim
= {
1234 .ifi_family
= AF_UNSPEC
,
1238 msg
= nlmsg_alloc_simple(RTM_DELLINK
, NLM_F_REQUEST
);
1243 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1244 nla_put_string(msg
, IFLA_IFNAME
, ifname
);
1245 return system_rtnl_call(msg
);
1248 int system_macvlan_del(struct device
*macvlan
)
1250 return system_link_del(macvlan
->ifname
);
1253 int system_veth_add(struct device
*veth
, struct veth_config
*cfg
)
1256 struct ifinfomsg empty_iim
= {};
1257 struct nlattr
*linkinfo
, *data
, *veth_info
;
1260 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1265 nlmsg_append(msg
, &empty_iim
, sizeof(empty_iim
), 0);
1267 if (cfg
->flags
& VETH_OPT_MACADDR
)
1268 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1269 nla_put_string(msg
, IFLA_IFNAME
, veth
->ifname
);
1271 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1272 goto nla_put_failure
;
1274 nla_put_string(msg
, IFLA_INFO_KIND
, "veth");
1276 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1277 goto nla_put_failure
;
1279 if (!(veth_info
= nla_nest_start(msg
, VETH_INFO_PEER
)))
1280 goto nla_put_failure
;
1282 nlmsg_append(msg
, &empty_iim
, sizeof(empty_iim
), 0);
1284 if (cfg
->flags
& VETH_OPT_PEER_NAME
)
1285 nla_put_string(msg
, IFLA_IFNAME
, cfg
->peer_name
);
1286 if (cfg
->flags
& VETH_OPT_PEER_MACADDR
)
1287 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->peer_macaddr
), cfg
->peer_macaddr
);
1289 nla_nest_end(msg
, veth_info
);
1290 nla_nest_end(msg
, data
);
1291 nla_nest_end(msg
, linkinfo
);
1293 rv
= system_rtnl_call(msg
);
1295 if (cfg
->flags
& VETH_OPT_PEER_NAME
)
1296 D(SYSTEM
, "Error adding veth '%s' with peer '%s': %d\n", veth
->ifname
, cfg
->peer_name
, rv
);
1298 D(SYSTEM
, "Error adding veth '%s': %d\n", veth
->ifname
, rv
);
1308 int system_veth_del(struct device
*veth
)
1310 return system_link_del(veth
->ifname
);
1313 static int system_vlan(struct device
*dev
, int id
)
1315 struct vlan_ioctl_args ifr
= {
1316 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
1317 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
1320 if (ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
) < 0)
1324 ifr
.cmd
= DEL_VLAN_CMD
;
1327 ifr
.cmd
= ADD_VLAN_CMD
;
1330 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
1331 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1334 int system_vlan_add(struct device
*dev
, int id
)
1336 return system_vlan(dev
, id
);
1339 int system_vlan_del(struct device
*dev
)
1341 return system_vlan(dev
, -1);
1344 int system_vlandev_add(struct device
*vlandev
, struct device
*dev
, struct vlandev_config
*cfg
)
1347 struct nlattr
*linkinfo
, *data
;
1348 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
};
1351 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1356 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1357 nla_put_string(msg
, IFLA_IFNAME
, vlandev
->ifname
);
1358 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1360 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1361 goto nla_put_failure
;
1363 nla_put_string(msg
, IFLA_INFO_KIND
, "vlan");
1365 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1366 goto nla_put_failure
;
1368 nla_put_u16(msg
, IFLA_VLAN_ID
, cfg
->vid
);
1370 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1371 nla_put_u16(msg
, IFLA_VLAN_PROTOCOL
, htons(cfg
->proto
));
1373 if(cfg
->proto
== VLAN_PROTO_8021AD
)
1374 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
);
1377 nla_nest_end(msg
, data
);
1378 nla_nest_end(msg
, linkinfo
);
1380 rv
= system_rtnl_call(msg
);
1382 D(SYSTEM
, "Error adding vlandev '%s' over '%s': %d\n", vlandev
->ifname
, dev
->ifname
, rv
);
1391 int system_vlandev_del(struct device
*vlandev
)
1393 return system_link_del(vlandev
->ifname
);
1397 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
1402 memset(&ifr
, 0, sizeof(ifr
));
1403 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1405 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
1406 s
->mtu
= ifr
.ifr_mtu
;
1407 s
->flags
|= DEV_OPT_MTU
;
1410 s
->mtu6
= system_update_ipv6_mtu(dev
, 0);
1412 s
->flags
|= DEV_OPT_MTU6
;
1414 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
1415 s
->txqueuelen
= ifr
.ifr_qlen
;
1416 s
->flags
|= DEV_OPT_TXQUEUELEN
;
1419 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
1420 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
1421 s
->flags
|= DEV_OPT_MACADDR
;
1424 if (!system_get_disable_ipv6(dev
, buf
, sizeof(buf
))) {
1425 s
->ipv6
= !strtoul(buf
, NULL
, 0);
1426 s
->flags
|= DEV_OPT_IPV6
;
1429 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) == 0) {
1430 s
->promisc
= ifr
.ifr_flags
& IFF_PROMISC
;
1431 s
->flags
|= DEV_OPT_PROMISC
;
1433 s
->multicast
= ifr
.ifr_flags
& IFF_MULTICAST
;
1434 s
->flags
|= DEV_OPT_MULTICAST
;
1437 if (!system_get_rpfilter(dev
, buf
, sizeof(buf
))) {
1438 s
->rpfilter
= strtoul(buf
, NULL
, 0);
1439 s
->flags
|= DEV_OPT_RPFILTER
;
1442 if (!system_get_acceptlocal(dev
, buf
, sizeof(buf
))) {
1443 s
->acceptlocal
= strtoul(buf
, NULL
, 0);
1444 s
->flags
|= DEV_OPT_ACCEPTLOCAL
;
1447 if (!system_get_igmpversion(dev
, buf
, sizeof(buf
))) {
1448 s
->igmpversion
= strtoul(buf
, NULL
, 0);
1449 s
->flags
|= DEV_OPT_IGMPVERSION
;
1452 if (!system_get_mldversion(dev
, buf
, sizeof(buf
))) {
1453 s
->mldversion
= strtoul(buf
, NULL
, 0);
1454 s
->flags
|= DEV_OPT_MLDVERSION
;
1457 if (!system_get_neigh4reachabletime(dev
, buf
, sizeof(buf
))) {
1458 s
->neigh4reachabletime
= strtoul(buf
, NULL
, 0);
1459 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1462 if (!system_get_neigh6reachabletime(dev
, buf
, sizeof(buf
))) {
1463 s
->neigh6reachabletime
= strtoul(buf
, NULL
, 0);
1464 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1467 if (!system_get_neigh4locktime(dev
, buf
, sizeof(buf
))) {
1468 s
->neigh4locktime
= strtol(buf
, NULL
, 0);
1469 s
->flags
|= DEV_OPT_NEIGHLOCKTIME
;
1472 if (!system_get_neigh4gcstaletime(dev
, buf
, sizeof(buf
))) {
1473 s
->neigh4gcstaletime
= strtoul(buf
, NULL
, 0);
1474 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1477 if (!system_get_neigh6gcstaletime(dev
, buf
, sizeof(buf
))) {
1478 s
->neigh6gcstaletime
= strtoul(buf
, NULL
, 0);
1479 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1482 if (!system_get_dadtransmits(dev
, buf
, sizeof(buf
))) {
1483 s
->dadtransmits
= strtoul(buf
, NULL
, 0);
1484 s
->flags
|= DEV_OPT_DADTRANSMITS
;
1487 if (!system_get_sendredirects(dev
, buf
, sizeof(buf
))) {
1488 s
->sendredirects
= strtoul(buf
, NULL
, 0);
1489 s
->flags
|= DEV_OPT_SENDREDIRECTS
;
1494 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
, unsigned int apply_mask
)
1499 memset(&ifr
, 0, sizeof(ifr
));
1500 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1501 if (s
->flags
& DEV_OPT_MTU
& apply_mask
) {
1502 ifr
.ifr_mtu
= s
->mtu
;
1503 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
1504 s
->flags
&= ~DEV_OPT_MTU
;
1506 if (s
->flags
& DEV_OPT_MTU6
& apply_mask
) {
1507 system_update_ipv6_mtu(dev
, s
->mtu6
);
1509 if (s
->flags
& DEV_OPT_TXQUEUELEN
& apply_mask
) {
1510 ifr
.ifr_qlen
= s
->txqueuelen
;
1511 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
1512 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
1514 if ((s
->flags
& DEV_OPT_MACADDR
& apply_mask
) && !dev
->external
) {
1515 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
1516 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
1517 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
1518 s
->flags
&= ~DEV_OPT_MACADDR
;
1520 if (s
->flags
& DEV_OPT_IPV6
& apply_mask
)
1521 system_set_disable_ipv6(dev
, s
->ipv6
? "0" : "1");
1522 if (s
->flags
& DEV_OPT_PROMISC
& apply_mask
) {
1523 if (system_if_flags(dev
->ifname
, s
->promisc
? IFF_PROMISC
: 0,
1524 !s
->promisc
? IFF_PROMISC
: 0) < 0)
1525 s
->flags
&= ~DEV_OPT_PROMISC
;
1527 if (s
->flags
& DEV_OPT_RPFILTER
& apply_mask
) {
1528 snprintf(buf
, sizeof(buf
), "%u", s
->rpfilter
);
1529 system_set_rpfilter(dev
, buf
);
1531 if (s
->flags
& DEV_OPT_ACCEPTLOCAL
& apply_mask
)
1532 system_set_acceptlocal(dev
, s
->acceptlocal
? "1" : "0");
1533 if (s
->flags
& DEV_OPT_IGMPVERSION
& apply_mask
) {
1534 snprintf(buf
, sizeof(buf
), "%u", s
->igmpversion
);
1535 system_set_igmpversion(dev
, buf
);
1537 if (s
->flags
& DEV_OPT_MLDVERSION
& apply_mask
) {
1538 snprintf(buf
, sizeof(buf
), "%u", s
->mldversion
);
1539 system_set_mldversion(dev
, buf
);
1541 if (s
->flags
& DEV_OPT_NEIGHREACHABLETIME
& apply_mask
) {
1542 snprintf(buf
, sizeof(buf
), "%u", s
->neigh4reachabletime
);
1543 system_set_neigh4reachabletime(dev
, buf
);
1544 snprintf(buf
, sizeof(buf
), "%u", s
->neigh6reachabletime
);
1545 system_set_neigh6reachabletime(dev
, buf
);
1547 if (s
->flags
& DEV_OPT_NEIGHLOCKTIME
& apply_mask
) {
1548 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4locktime
);
1549 system_set_neigh4locktime(dev
, buf
);
1551 if (s
->flags
& DEV_OPT_NEIGHGCSTALETIME
& apply_mask
) {
1552 snprintf(buf
, sizeof(buf
), "%u", s
->neigh4gcstaletime
);
1553 system_set_neigh4gcstaletime(dev
, buf
);
1554 snprintf(buf
, sizeof(buf
), "%u", s
->neigh6gcstaletime
);
1555 system_set_neigh6gcstaletime(dev
, buf
);
1557 if (s
->flags
& DEV_OPT_DADTRANSMITS
& apply_mask
) {
1558 snprintf(buf
, sizeof(buf
), "%u", s
->dadtransmits
);
1559 system_set_dadtransmits(dev
, buf
);
1561 if (s
->flags
& DEV_OPT_MULTICAST
& apply_mask
) {
1562 if (system_if_flags(dev
->ifname
, s
->multicast
? IFF_MULTICAST
: 0,
1563 !s
->multicast
? IFF_MULTICAST
: 0) < 0)
1564 s
->flags
&= ~DEV_OPT_MULTICAST
;
1566 if (s
->flags
& DEV_OPT_SENDREDIRECTS
& apply_mask
)
1567 system_set_sendredirects(dev
, s
->sendredirects
? "1" : "0");
1570 int system_if_up(struct device
*dev
)
1572 system_if_get_settings(dev
, &dev
->orig_settings
);
1573 /* Only keep orig settings based on what needs to be set */
1574 dev
->orig_settings
.valid_flags
= dev
->orig_settings
.flags
;
1575 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
1576 system_if_apply_settings(dev
, &dev
->settings
, dev
->settings
.flags
);
1577 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
1580 int system_if_down(struct device
*dev
)
1582 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
1583 system_if_apply_settings(dev
, &dev
->orig_settings
, dev
->orig_settings
.flags
);
1587 struct if_check_data
{
1593 #ifndef IFF_LOWER_UP
1594 #define IFF_LOWER_UP 0x10000
1597 static int cb_if_check_valid(struct nl_msg
*msg
, void *arg
)
1599 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
1600 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
1601 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1603 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
1606 device_set_present(chk
->dev
, ifi
->ifi_index
> 0 ? true : false);
1607 device_set_link(chk
->dev
, ifi
->ifi_flags
& IFF_LOWER_UP
? true : false);
1612 static int cb_if_check_ack(struct nl_msg
*msg
, void *arg
)
1614 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1619 static int cb_if_check_error(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
1621 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1623 device_set_present(chk
->dev
, false);
1624 device_set_link(chk
->dev
, false);
1625 chk
->pending
= err
->error
;
1630 int system_if_check(struct device
*dev
)
1632 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1634 struct ifinfomsg ifi
= {
1635 .ifi_family
= AF_UNSPEC
,
1638 struct if_check_data chk
= {
1647 msg
= nlmsg_alloc_simple(RTM_GETLINK
, 0);
1651 if (nlmsg_append(msg
, &ifi
, sizeof(ifi
), 0) ||
1652 nla_put_string(msg
, IFLA_IFNAME
, dev
->ifname
))
1655 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_if_check_valid
, &chk
);
1656 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, cb_if_check_ack
, &chk
);
1657 nl_cb_err(cb
, NL_CB_CUSTOM
, cb_if_check_error
, &chk
);
1659 nl_send_auto_complete(sock_rtnl
, msg
);
1660 while (chk
.pending
> 0)
1661 nl_recvmsgs(sock_rtnl
, cb
);
1673 system_if_get_parent(struct device
*dev
)
1675 char buf
[64], *devname
;
1676 int ifindex
, iflink
, len
;
1679 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
1680 f
= fopen(buf
, "r");
1684 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
1691 iflink
= strtoul(buf
, NULL
, 0);
1692 ifindex
= system_if_resolve(dev
);
1693 if (!iflink
|| iflink
== ifindex
)
1696 devname
= if_indextoname(iflink
, buf
);
1700 return device_get(devname
, true);
1704 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
1710 fd
= openat(dir_fd
, file
, O_RDONLY
);
1715 len
= read(fd
, buf
, len
- 1);
1719 } else if (len
> 0) {
1722 c
= strchr(buf
, '\n');
1735 read_uint64_file(int dir_fd
, const char *file
, uint64_t *val
)
1740 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
1742 *val
= strtoull(buf
, NULL
, 0);
1747 /* Assume advertised flags == supported flags */
1748 static const struct {
1751 } ethtool_link_modes
[] = {
1752 { ADVERTISED_10baseT_Half
, "10baseT-H" },
1753 { ADVERTISED_10baseT_Full
, "10baseT-F" },
1754 { ADVERTISED_100baseT_Half
, "100baseT-H" },
1755 { ADVERTISED_100baseT_Full
, "100baseT-F" },
1756 { ADVERTISED_1000baseT_Half
, "1000baseT-H" },
1757 { ADVERTISED_1000baseT_Full
, "1000baseT-F" },
1758 { ADVERTISED_1000baseKX_Full
, "1000baseKX-F" },
1759 { ADVERTISED_2500baseX_Full
, "2500baseX-F" },
1760 { ADVERTISED_10000baseT_Full
, "10000baseT-F" },
1761 { ADVERTISED_10000baseKX4_Full
, "10000baseKX4-F" },
1762 { ADVERTISED_10000baseKR_Full
, "10000baseKR-F" },
1763 { ADVERTISED_20000baseMLD2_Full
, "20000baseMLD2-F" },
1764 { ADVERTISED_20000baseKR2_Full
, "20000baseKR2-F" },
1765 { ADVERTISED_40000baseKR4_Full
, "40000baseKR4-F" },
1766 { ADVERTISED_40000baseCR4_Full
, "40000baseCR4-F" },
1767 { ADVERTISED_40000baseSR4_Full
, "40000baseSR4-F" },
1768 { ADVERTISED_40000baseLR4_Full
, "40000baseLR4-F" },
1769 #ifdef ADVERTISED_56000baseKR4_Full
1770 { ADVERTISED_56000baseKR4_Full
, "56000baseKR4-F" },
1771 { ADVERTISED_56000baseCR4_Full
, "56000baseCR4-F" },
1772 { ADVERTISED_56000baseSR4_Full
, "56000baseSR4-F" },
1773 { ADVERTISED_56000baseLR4_Full
, "56000baseLR4-F" },
1777 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
1780 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
1781 if (mask
& ethtool_link_modes
[i
].mask
)
1782 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
1787 system_if_force_external(const char *ifname
)
1792 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/phy80211", ifname
);
1793 return stat(buf
, &s
) == 0;
1797 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
1799 struct ethtool_cmd ecmd
;
1804 memset(&ecmd
, 0, sizeof(ecmd
));
1805 memset(&ifr
, 0, sizeof(ifr
));
1806 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1807 ifr
.ifr_data
= (caddr_t
) &ecmd
;
1808 ecmd
.cmd
= ETHTOOL_GSET
;
1810 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
1811 c
= blobmsg_open_array(b
, "link-advertising");
1812 system_add_link_modes(b
, ecmd
.advertising
);
1813 blobmsg_close_array(b
, c
);
1815 c
= blobmsg_open_array(b
, "link-partner-advertising");
1816 system_add_link_modes(b
, ecmd
.lp_advertising
);
1817 blobmsg_close_array(b
, c
);
1819 c
= blobmsg_open_array(b
, "link-supported");
1820 system_add_link_modes(b
, ecmd
.supported
);
1821 blobmsg_close_array(b
, c
);
1823 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
1824 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
1825 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
1826 blobmsg_add_string_buffer(b
);
1828 blobmsg_add_u8(b
, "autoneg", !!ecmd
.autoneg
);
1835 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
1837 const char *const counters
[] = {
1838 "collisions", "rx_frame_errors", "tx_compressed",
1839 "multicast", "rx_length_errors", "tx_dropped",
1840 "rx_bytes", "rx_missed_errors", "tx_errors",
1841 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1842 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1843 "rx_dropped", "tx_aborted_errors", "tx_packets",
1844 "rx_errors", "tx_bytes", "tx_window_errors",
1845 "rx_fifo_errors", "tx_carrier_errors",
1852 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
1853 stats_dir
= open(buf
, O_DIRECTORY
);
1857 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
1858 if (read_uint64_file(stats_dir
, counters
[i
], &val
))
1859 blobmsg_add_u64(b
, counters
[i
], val
);
1865 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
1867 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
1868 int alen
= v4
? 4 : 16;
1869 unsigned int flags
= 0;
1870 struct ifaddrmsg ifa
= {
1871 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1872 .ifa_prefixlen
= addr
->mask
,
1873 .ifa_index
= dev
->ifindex
,
1877 if (cmd
== RTM_NEWADDR
)
1878 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1880 msg
= nlmsg_alloc_simple(cmd
, flags
);
1884 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
1885 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
1887 if (addr
->broadcast
)
1888 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
1889 if (addr
->point_to_point
)
1890 nla_put_u32(msg
, IFA_ADDRESS
, addr
->point_to_point
);
1892 time_t now
= system_get_rtime();
1893 struct ifa_cacheinfo cinfo
= {0xffffffffU
, 0xffffffffU
, 0, 0};
1895 if (addr
->preferred_until
) {
1896 int64_t preferred
= addr
->preferred_until
- now
;
1899 else if (preferred
> UINT32_MAX
)
1900 preferred
= UINT32_MAX
;
1902 cinfo
.ifa_prefered
= preferred
;
1905 if (addr
->valid_until
) {
1906 int64_t valid
= addr
->valid_until
- now
;
1911 else if (valid
> UINT32_MAX
)
1914 cinfo
.ifa_valid
= valid
;
1917 nla_put(msg
, IFA_CACHEINFO
, sizeof(cinfo
), &cinfo
);
1919 if (cmd
== RTM_NEWADDR
&& (addr
->flags
& DEVADDR_OFFLINK
))
1920 nla_put_u32(msg
, IFA_FLAGS
, IFA_F_NOPREFIXROUTE
);
1923 return system_rtnl_call(msg
);
1926 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
1928 return system_addr(dev
, addr
, RTM_NEWADDR
);
1931 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
1933 return system_addr(dev
, addr
, RTM_DELADDR
);
1936 static int system_neigh(struct device
*dev
, struct device_neighbor
*neighbor
, int cmd
)
1938 int alen
= ((neighbor
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
1939 unsigned int flags
= 0;
1940 struct ndmsg ndm
= {
1941 .ndm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1942 .ndm_ifindex
= dev
->ifindex
,
1943 .ndm_state
= NUD_PERMANENT
,
1944 .ndm_flags
= (neighbor
->proxy
? NTF_PROXY
: 0) | (neighbor
->router
? NTF_ROUTER
: 0),
1951 if (cmd
== RTM_NEWNEIGH
)
1952 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1954 msg
= nlmsg_alloc_simple(cmd
, flags
);
1959 nlmsg_append(msg
, &ndm
, sizeof(ndm
), 0);
1961 nla_put(msg
, NDA_DST
, alen
, &neighbor
->addr
);
1962 if (neighbor
->flags
& DEVNEIGH_MAC
)
1963 nla_put(msg
, NDA_LLADDR
, sizeof(neighbor
->macaddr
), &neighbor
->macaddr
);
1966 return system_rtnl_call(msg
);
1969 int system_add_neighbor(struct device
*dev
, struct device_neighbor
*neighbor
)
1971 return system_neigh(dev
, neighbor
, RTM_NEWNEIGH
);
1974 int system_del_neighbor(struct device
*dev
, struct device_neighbor
*neighbor
)
1976 return system_neigh(dev
, neighbor
, RTM_DELNEIGH
);
1979 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
1981 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
1983 unsigned int flags
= 0;
1986 have_gw
= !!route
->nexthop
.in
.s_addr
;
1988 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
1989 route
->nexthop
.in6
.s6_addr32
[1] ||
1990 route
->nexthop
.in6
.s6_addr32
[2] ||
1991 route
->nexthop
.in6
.s6_addr32
[3];
1993 unsigned int table
= (route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))
1994 ? route
->table
: RT_TABLE_MAIN
;
1996 struct rtmsg rtm
= {
1997 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1998 .rtm_dst_len
= route
->mask
,
1999 .rtm_src_len
= route
->sourcemask
,
2000 .rtm_table
= (table
< 256) ? table
: RT_TABLE_UNSPEC
,
2001 .rtm_protocol
= (route
->flags
& DEVROUTE_PROTO
) ? route
->proto
: RTPROT_STATIC
,
2002 .rtm_scope
= RT_SCOPE_NOWHERE
,
2003 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
2004 .rtm_flags
= (route
->flags
& DEVROUTE_ONLINK
) ? RTNH_F_ONLINK
: 0,
2008 if (cmd
== RTM_NEWROUTE
) {
2009 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
2011 if (!dev
) { /* Add null-route */
2012 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
2013 rtm
.rtm_type
= RTN_UNREACHABLE
;
2016 rtm
.rtm_scope
= (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
2019 if (route
->flags
& DEVROUTE_TYPE
) {
2020 rtm
.rtm_type
= route
->type
;
2021 if (!(route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))) {
2022 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_BROADCAST
||
2023 rtm
.rtm_type
== RTN_NAT
|| rtm
.rtm_type
== RTN_ANYCAST
)
2024 rtm
.rtm_table
= RT_TABLE_LOCAL
;
2027 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_NAT
) {
2028 rtm
.rtm_scope
= RT_SCOPE_HOST
;
2029 } else if (rtm
.rtm_type
== RTN_BROADCAST
|| rtm
.rtm_type
== RTN_MULTICAST
||
2030 rtm
.rtm_type
== RTN_ANYCAST
) {
2031 rtm
.rtm_scope
= RT_SCOPE_LINK
;
2032 } else if (rtm
.rtm_type
== RTN_BLACKHOLE
|| rtm
.rtm_type
== RTN_UNREACHABLE
||
2033 rtm
.rtm_type
== RTN_PROHIBIT
|| rtm
.rtm_type
== RTN_FAILED_POLICY
||
2034 rtm
.rtm_type
== RTN_THROW
) {
2035 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
2040 msg
= nlmsg_alloc_simple(cmd
, flags
);
2044 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
2047 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
2049 if (route
->sourcemask
) {
2050 if (rtm
.rtm_family
== AF_INET
)
2051 nla_put(msg
, RTA_PREFSRC
, alen
, &route
->source
);
2053 nla_put(msg
, RTA_SRC
, alen
, &route
->source
);
2056 if (route
->metric
> 0)
2057 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
2060 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
2063 nla_put_u32(msg
, RTA_OIF
, dev
->ifindex
);
2066 nla_put_u32(msg
, RTA_TABLE
, table
);
2068 if (route
->flags
& DEVROUTE_MTU
) {
2069 struct nlattr
*metrics
;
2071 if (!(metrics
= nla_nest_start(msg
, RTA_METRICS
)))
2072 goto nla_put_failure
;
2074 nla_put_u32(msg
, RTAX_MTU
, route
->mtu
);
2076 nla_nest_end(msg
, metrics
);
2079 return system_rtnl_call(msg
);
2086 int system_add_route(struct device
*dev
, struct device_route
*route
)
2088 return system_rt(dev
, route
, RTM_NEWROUTE
);
2091 int system_del_route(struct device
*dev
, struct device_route
*route
)
2093 return system_rt(dev
, route
, RTM_DELROUTE
);
2096 int system_flush_routes(void)
2098 const char *names
[] = {
2099 "/proc/sys/net/ipv4/route/flush",
2100 "/proc/sys/net/ipv6/route/flush"
2104 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
2105 fd
= open(names
[i
], O_WRONLY
);
2109 if (write(fd
, "-1", 2)) {}
2115 bool system_resolve_rt_type(const char *type
, unsigned int *id
)
2117 return system_rtn_aton(type
, id
);
2120 bool system_resolve_rt_proto(const char *type
, unsigned int *id
)
2124 unsigned int n
, proto
= 256;
2125 n
= strtoul(type
, &e
, 0);
2126 if (!*e
&& e
!= type
)
2128 else if (!strcmp(type
, "unspec"))
2129 proto
= RTPROT_UNSPEC
;
2130 else if (!strcmp(type
, "kernel"))
2131 proto
= RTPROT_KERNEL
;
2132 else if (!strcmp(type
, "boot"))
2133 proto
= RTPROT_BOOT
;
2134 else if (!strcmp(type
, "static"))
2135 proto
= RTPROT_STATIC
;
2136 else if ((f
= fopen("/etc/iproute2/rt_protos", "r")) != NULL
) {
2137 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
) {
2138 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
2141 n
= strtoul(e
, NULL
, 10);
2142 e
= strtok(NULL
, " \t\n");
2144 if (e
&& !strcmp(e
, type
)) {
2159 bool system_resolve_rt_table(const char *name
, unsigned int *id
)
2163 unsigned int n
, table
= RT_TABLE_UNSPEC
;
2165 /* first try to parse table as number */
2166 if ((n
= strtoul(name
, &e
, 0)) > 0 && !*e
)
2169 /* handle well known aliases */
2170 else if (!strcmp(name
, "default"))
2171 table
= RT_TABLE_DEFAULT
;
2172 else if (!strcmp(name
, "main"))
2173 table
= RT_TABLE_MAIN
;
2174 else if (!strcmp(name
, "local"))
2175 table
= RT_TABLE_LOCAL
;
2177 /* try to look up name in /etc/iproute2/rt_tables */
2178 else if ((f
= fopen("/etc/iproute2/rt_tables", "r")) != NULL
)
2180 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
)
2182 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
2185 n
= strtoul(e
, NULL
, 10);
2186 e
= strtok(NULL
, " \t\n");
2188 if (e
&& !strcmp(e
, name
))
2198 if (table
== RT_TABLE_UNSPEC
)
2205 bool system_is_default_rt_table(unsigned int id
)
2207 return (id
== RT_TABLE_MAIN
);
2210 bool system_resolve_rpfilter(const char *filter
, unsigned int *id
)
2215 if (!strcmp(filter
, "strict"))
2217 else if (!strcmp(filter
, "loose"))
2220 n
= strtoul(filter
, &e
, 0);
2221 if (*e
|| e
== filter
|| n
> 2)
2229 static int system_iprule(struct iprule
*rule
, int cmd
)
2231 int alen
= ((rule
->flags
& IPRULE_FAMILY
) == IPRULE_INET4
) ? 4 : 16;
2234 struct rtmsg rtm
= {
2235 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
2236 .rtm_protocol
= RTPROT_STATIC
,
2237 .rtm_scope
= RT_SCOPE_UNIVERSE
,
2238 .rtm_table
= RT_TABLE_UNSPEC
,
2239 .rtm_type
= RTN_UNSPEC
,
2243 if (cmd
== RTM_NEWRULE
)
2244 rtm
.rtm_type
= RTN_UNICAST
;
2247 rtm
.rtm_flags
|= FIB_RULE_INVERT
;
2249 if (rule
->flags
& IPRULE_SRC
)
2250 rtm
.rtm_src_len
= rule
->src_mask
;
2252 if (rule
->flags
& IPRULE_DEST
)
2253 rtm
.rtm_dst_len
= rule
->dest_mask
;
2255 if (rule
->flags
& IPRULE_TOS
)
2256 rtm
.rtm_tos
= rule
->tos
;
2258 if (rule
->flags
& IPRULE_LOOKUP
) {
2259 if (rule
->lookup
< 256)
2260 rtm
.rtm_table
= rule
->lookup
;
2263 if (rule
->flags
& IPRULE_ACTION
)
2264 rtm
.rtm_type
= rule
->action
;
2265 else if (rule
->flags
& IPRULE_GOTO
)
2266 rtm
.rtm_type
= FR_ACT_GOTO
;
2267 else if (!(rule
->flags
& (IPRULE_LOOKUP
| IPRULE_ACTION
| IPRULE_GOTO
)))
2268 rtm
.rtm_type
= FR_ACT_NOP
;
2270 msg
= nlmsg_alloc_simple(cmd
, NLM_F_REQUEST
);
2275 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
2277 if (rule
->flags
& IPRULE_IN
)
2278 nla_put(msg
, FRA_IFNAME
, strlen(rule
->in_dev
) + 1, rule
->in_dev
);
2280 if (rule
->flags
& IPRULE_OUT
)
2281 nla_put(msg
, FRA_OIFNAME
, strlen(rule
->out_dev
) + 1, rule
->out_dev
);
2283 if (rule
->flags
& IPRULE_SRC
)
2284 nla_put(msg
, FRA_SRC
, alen
, &rule
->src_addr
);
2286 if (rule
->flags
& IPRULE_DEST
)
2287 nla_put(msg
, FRA_DST
, alen
, &rule
->dest_addr
);
2289 if (rule
->flags
& IPRULE_PRIORITY
)
2290 nla_put_u32(msg
, FRA_PRIORITY
, rule
->priority
);
2291 else if (cmd
== RTM_NEWRULE
)
2292 nla_put_u32(msg
, FRA_PRIORITY
, rule
->order
);
2294 if (rule
->flags
& IPRULE_FWMARK
)
2295 nla_put_u32(msg
, FRA_FWMARK
, rule
->fwmark
);
2297 if (rule
->flags
& IPRULE_FWMASK
)
2298 nla_put_u32(msg
, FRA_FWMASK
, rule
->fwmask
);
2300 if (rule
->flags
& IPRULE_LOOKUP
) {
2301 if (rule
->lookup
>= 256)
2302 nla_put_u32(msg
, FRA_TABLE
, rule
->lookup
);
2305 if (rule
->flags
& IPRULE_SUP_PREFIXLEN
)
2306 nla_put_u32(msg
, FRA_SUPPRESS_PREFIXLEN
, rule
->sup_prefixlen
);
2308 if (rule
->flags
& IPRULE_GOTO
)
2309 nla_put_u32(msg
, FRA_GOTO
, rule
->gotoid
);
2311 return system_rtnl_call(msg
);
2314 int system_add_iprule(struct iprule
*rule
)
2316 return system_iprule(rule
, RTM_NEWRULE
);
2319 int system_del_iprule(struct iprule
*rule
)
2321 return system_iprule(rule
, RTM_DELRULE
);
2324 int system_flush_iprules(void)
2329 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET
);
2330 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET6
);
2332 memset(&rule
, 0, sizeof(rule
));
2335 rule
.flags
= IPRULE_INET4
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2338 rule
.lookup
= RT_TABLE_LOCAL
;
2339 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2341 rule
.priority
= 32766;
2342 rule
.lookup
= RT_TABLE_MAIN
;
2343 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2345 rule
.priority
= 32767;
2346 rule
.lookup
= RT_TABLE_DEFAULT
;
2347 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2350 rule
.flags
= IPRULE_INET6
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2353 rule
.lookup
= RT_TABLE_LOCAL
;
2354 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2356 rule
.priority
= 32766;
2357 rule
.lookup
= RT_TABLE_MAIN
;
2358 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2363 bool system_resolve_iprule_action(const char *action
, unsigned int *id
)
2365 return system_rtn_aton(action
, id
);
2368 time_t system_get_rtime(void)
2373 if (syscall(__NR_clock_gettime
, CLOCK_MONOTONIC
, &ts
) == 0)
2376 if (gettimeofday(&tv
, NULL
) == 0)
2383 #define IP_DF 0x4000
2386 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
2390 memset(&ifr
, 0, sizeof(ifr
));
2391 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
) - 1);
2392 ifr
.ifr_ifru
.ifru_data
= p
;
2393 return ioctl(sock_ioctl
, cmd
, &ifr
);
2396 #ifdef IFLA_IPTUN_MAX
2397 static int system_add_ip6_tunnel(const char *name
, const unsigned int link
,
2398 struct blob_attr
**tb
)
2400 struct nl_msg
*nlm
= nlmsg_alloc_simple(RTM_NEWLINK
,
2401 NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2402 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
};
2403 struct blob_attr
*cur
;
2404 int ret
= 0, ttl
= 0;
2409 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2410 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2413 nla_put_u32(nlm
, IFLA_LINK
, link
);
2415 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2421 nla_put_string(nlm
, IFLA_INFO_KIND
, "ip6tnl");
2422 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2429 nla_put_u32(nlm
, IFLA_IPTUN_LINK
, link
);
2431 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2432 ttl
= blobmsg_get_u32(cur
);
2434 nla_put_u8(nlm
, IFLA_IPTUN_PROTO
, IPPROTO_IPIP
);
2435 nla_put_u8(nlm
, IFLA_IPTUN_TTL
, (ttl
) ? ttl
: 64);
2437 struct in6_addr in6buf
;
2438 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2439 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2443 nla_put(nlm
, IFLA_IPTUN_LOCAL
, sizeof(in6buf
), &in6buf
);
2446 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2447 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2451 nla_put(nlm
, IFLA_IPTUN_REMOTE
, sizeof(in6buf
), &in6buf
);
2454 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2455 struct blob_attr
*tb_data
[__IPIP6_DATA_ATTR_MAX
];
2456 uint32_t tun_flags
= IP6_TNL_F_IGN_ENCAP_LIMIT
;
2458 blobmsg_parse(ipip6_data_attr_list
.params
, __IPIP6_DATA_ATTR_MAX
, tb_data
,
2459 blobmsg_data(cur
), blobmsg_len(cur
));
2461 if ((cur
= tb_data
[IPIP6_DATA_ENCAPLIMIT
])) {
2462 char *str
= blobmsg_get_string(cur
);
2464 if (strcmp(str
, "ignore")) {
2466 unsigned encap_limit
= strtoul(str
, &e
, 0);
2468 if (e
== str
|| *e
|| encap_limit
> 255) {
2473 nla_put_u8(nlm
, IFLA_IPTUN_ENCAP_LIMIT
, encap_limit
);
2474 tun_flags
&= ~IP6_TNL_F_IGN_ENCAP_LIMIT
;
2478 #ifdef IFLA_IPTUN_FMR_MAX
2479 if ((cur
= tb_data
[IPIP6_DATA_FMRS
])) {
2480 struct blob_attr
*rcur
;
2481 unsigned rrem
, fmrcnt
= 0;
2482 struct nlattr
*fmrs
= nla_nest_start(nlm
, IFLA_IPTUN_FMRS
);
2489 blobmsg_for_each_attr(rcur
, cur
, rrem
) {
2490 struct blob_attr
*tb_fmr
[__FMR_DATA_ATTR_MAX
], *tb_cur
;
2491 struct in6_addr ip6prefix
;
2492 struct in_addr ip4prefix
;
2493 unsigned ip4len
, ip6len
, ealen
, offset
;
2495 blobmsg_parse(fmr_data_attr_list
.params
, __FMR_DATA_ATTR_MAX
, tb_fmr
,
2496 blobmsg_data(rcur
), blobmsg_len(rcur
));
2498 if (!(tb_cur
= tb_fmr
[FMR_DATA_PREFIX6
]) ||
2499 !parse_ip_and_netmask(AF_INET6
,
2500 blobmsg_data(tb_cur
), &ip6prefix
,
2506 if (!(tb_cur
= tb_fmr
[FMR_DATA_PREFIX4
]) ||
2507 !parse_ip_and_netmask(AF_INET
,
2508 blobmsg_data(tb_cur
), &ip4prefix
,
2514 if (!(tb_cur
= tb_fmr
[FMR_DATA_EALEN
])) {
2518 ealen
= blobmsg_get_u32(tb_cur
);
2520 if (!(tb_cur
= tb_fmr
[FMR_DATA_OFFSET
])) {
2524 offset
= blobmsg_get_u32(tb_cur
);
2526 struct nlattr
*rule
= nla_nest_start(nlm
, ++fmrcnt
);
2532 nla_put(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX
, sizeof(ip6prefix
), &ip6prefix
);
2533 nla_put(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX
, sizeof(ip4prefix
), &ip4prefix
);
2534 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX_LEN
, ip6len
);
2535 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX_LEN
, ip4len
);
2536 nla_put_u8(nlm
, IFLA_IPTUN_FMR_EA_LEN
, ealen
);
2537 nla_put_u8(nlm
, IFLA_IPTUN_FMR_OFFSET
, offset
);
2539 nla_nest_end(nlm
, rule
);
2542 nla_nest_end(nlm
, fmrs
);
2546 nla_put_u32(nlm
, IFLA_IPTUN_FLAGS
, tun_flags
);
2549 nla_nest_end(nlm
, infodata
);
2550 nla_nest_end(nlm
, linkinfo
);
2552 return system_rtnl_call(nlm
);
2560 #ifdef IFLA_IPTUN_MAX
2561 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
2562 static int system_add_gre_tunnel(const char *name
, const char *kind
,
2563 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2566 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2567 struct blob_attr
*cur
;
2568 uint32_t ikey
= 0, okey
= 0, flowinfo
= 0, flags6
= IP6_TNL_F_IGN_ENCAP_LIMIT
;
2569 uint16_t iflags
= 0, oflags
= 0;
2571 int ret
= 0, ttl
= 0;
2572 unsigned encap_limit
= 0;
2574 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2578 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2579 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2581 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2587 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2588 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2595 nla_put_u32(nlm
, IFLA_GRE_LINK
, link
);
2597 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2598 ttl
= blobmsg_get_u32(cur
);
2600 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2601 char *str
= blobmsg_get_string(cur
);
2602 if (strcmp(str
, "inherit")) {
2605 if (!system_tos_aton(str
, &uval
)) {
2611 flowinfo
|= htonl(uval
<< 20) & IP6_FLOWINFO_TCLASS
;
2616 flags6
|= IP6_TNL_F_USE_ORIG_TCLASS
;
2622 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2623 struct blob_attr
*tb_data
[__GRE_DATA_ATTR_MAX
];
2625 blobmsg_parse(gre_data_attr_list
.params
, __GRE_DATA_ATTR_MAX
, tb_data
,
2626 blobmsg_data(cur
), blobmsg_len(cur
));
2628 if ((cur
= tb_data
[GRE_DATA_IKEY
])) {
2629 if ((ikey
= blobmsg_get_u32(cur
)))
2633 if ((cur
= tb_data
[GRE_DATA_OKEY
])) {
2634 if ((okey
= blobmsg_get_u32(cur
)))
2638 if ((cur
= tb_data
[GRE_DATA_ICSUM
])) {
2639 if (blobmsg_get_bool(cur
))
2643 if ((cur
= tb_data
[GRE_DATA_OCSUM
])) {
2644 if (blobmsg_get_bool(cur
))
2648 if ((cur
= tb_data
[GRE_DATA_ISEQNO
])) {
2649 if (blobmsg_get_bool(cur
))
2653 if ((cur
= tb_data
[GRE_DATA_OSEQNO
])) {
2654 if (blobmsg_get_bool(cur
))
2658 if ((cur
= tb_data
[GRE_DATA_ENCAPLIMIT
])) {
2659 char *str
= blobmsg_get_string(cur
);
2661 if (strcmp(str
, "ignore")) {
2664 encap_limit
= strtoul(str
, &e
, 0);
2666 if (e
== str
|| *e
|| encap_limit
> 255) {
2671 flags6
&= ~IP6_TNL_F_IGN_ENCAP_LIMIT
;
2677 struct in6_addr in6buf
;
2678 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2679 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2683 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(in6buf
), &in6buf
);
2686 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2687 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2691 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(in6buf
), &in6buf
);
2694 if (!(flags6
& IP6_TNL_F_IGN_ENCAP_LIMIT
))
2695 nla_put_u8(nlm
, IFLA_GRE_ENCAP_LIMIT
, encap_limit
);
2698 nla_put_u32(nlm
, IFLA_GRE_FLOWINFO
, flowinfo
);
2701 nla_put_u32(nlm
, IFLA_GRE_FLAGS
, flags6
);
2706 struct in_addr inbuf
;
2709 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2710 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2714 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(inbuf
), &inbuf
);
2717 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2718 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2722 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(inbuf
), &inbuf
);
2724 if (IN_MULTICAST(ntohl(inbuf
.s_addr
))) {
2726 okey
= inbuf
.s_addr
;
2731 ikey
= inbuf
.s_addr
;
2737 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2738 set_df
= blobmsg_get_bool(cur
);
2741 /* ttl != 0 and nopmtudisc are incompatible */
2749 nla_put_u8(nlm
, IFLA_GRE_PMTUDISC
, set_df
? 1 : 0);
2751 nla_put_u8(nlm
, IFLA_GRE_TOS
, tos
);
2755 nla_put_u8(nlm
, IFLA_GRE_TTL
, ttl
);
2758 nla_put_u16(nlm
, IFLA_GRE_OFLAGS
, oflags
);
2761 nla_put_u16(nlm
, IFLA_GRE_IFLAGS
, iflags
);
2764 nla_put_u32(nlm
, IFLA_GRE_OKEY
, htonl(okey
));
2767 nla_put_u32(nlm
, IFLA_GRE_IKEY
, htonl(ikey
));
2769 nla_nest_end(nlm
, infodata
);
2770 nla_nest_end(nlm
, linkinfo
);
2772 return system_rtnl_call(nlm
);
2781 static int system_add_vti_tunnel(const char *name
, const char *kind
,
2782 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2785 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2786 struct blob_attr
*cur
;
2789 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2793 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2794 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2796 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2802 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2803 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2810 nla_put_u32(nlm
, IFLA_VTI_LINK
, link
);
2813 struct in6_addr in6buf
;
2814 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2815 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2819 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(in6buf
), &in6buf
);
2822 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2823 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2827 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(in6buf
), &in6buf
);
2831 struct in_addr inbuf
;
2833 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2834 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2838 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(inbuf
), &inbuf
);
2841 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2842 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2846 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(inbuf
), &inbuf
);
2851 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2852 struct blob_attr
*tb_data
[__VTI_DATA_ATTR_MAX
];
2853 uint32_t ikey
= 0, okey
= 0;
2855 blobmsg_parse(vti_data_attr_list
.params
, __VTI_DATA_ATTR_MAX
, tb_data
,
2856 blobmsg_data(cur
), blobmsg_len(cur
));
2858 if ((cur
= tb_data
[VTI_DATA_IKEY
])) {
2859 if ((ikey
= blobmsg_get_u32(cur
)))
2860 nla_put_u32(nlm
, IFLA_VTI_IKEY
, htonl(ikey
));
2863 if ((cur
= tb_data
[VTI_DATA_OKEY
])) {
2864 if ((okey
= blobmsg_get_u32(cur
)))
2865 nla_put_u32(nlm
, IFLA_VTI_OKEY
, htonl(okey
));
2869 nla_nest_end(nlm
, infodata
);
2870 nla_nest_end(nlm
, linkinfo
);
2872 return system_rtnl_call(nlm
);
2880 #ifdef IFLA_VXLAN_MAX
2881 static int system_add_vxlan(const char *name
, const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2883 struct blob_attr
*tb_data
[__VXLAN_DATA_ATTR_MAX
];
2885 struct nlattr
*linkinfo
, *data
;
2886 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
2887 struct blob_attr
*cur
;
2890 if ((cur
= tb
[TUNNEL_ATTR_DATA
]))
2891 blobmsg_parse(vxlan_data_attr_list
.params
, __VXLAN_DATA_ATTR_MAX
, tb_data
,
2892 blobmsg_data(cur
), blobmsg_len(cur
));
2896 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
2901 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
2903 nla_put_string(msg
, IFLA_IFNAME
, name
);
2905 if ((cur
= tb_data
[VXLAN_DATA_ATTR_MACADDR
])) {
2906 struct ether_addr
*ea
= ether_aton(blobmsg_get_string(cur
));
2912 nla_put(msg
, IFLA_ADDRESS
, ETH_ALEN
, ea
);
2915 if ((cur
= tb
[TUNNEL_ATTR_MTU
])) {
2916 uint32_t mtu
= blobmsg_get_u32(cur
);
2917 nla_put_u32(msg
, IFLA_MTU
, mtu
);
2920 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
))) {
2925 nla_put_string(msg
, IFLA_INFO_KIND
, "vxlan");
2927 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
))) {
2933 nla_put_u32(msg
, IFLA_VXLAN_LINK
, link
);
2935 if ((cur
= tb_data
[VXLAN_DATA_ATTR_ID
])) {
2936 uint32_t id
= blobmsg_get_u32(cur
);
2937 if (id
>= (1u << 24) - 1) {
2942 nla_put_u32(msg
, IFLA_VXLAN_ID
, id
);
2946 struct in6_addr in6buf
;
2947 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2948 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2952 nla_put(msg
, IFLA_VXLAN_LOCAL6
, sizeof(in6buf
), &in6buf
);
2955 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2956 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2960 nla_put(msg
, IFLA_VXLAN_GROUP6
, sizeof(in6buf
), &in6buf
);
2963 struct in_addr inbuf
;
2965 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2966 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2970 nla_put(msg
, IFLA_VXLAN_LOCAL
, sizeof(inbuf
), &inbuf
);
2973 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2974 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2978 nla_put(msg
, IFLA_VXLAN_GROUP
, sizeof(inbuf
), &inbuf
);
2982 uint32_t port
= 4789;
2983 if ((cur
= tb_data
[VXLAN_DATA_ATTR_PORT
])) {
2984 port
= blobmsg_get_u32(cur
);
2985 if (port
< 1 || port
> 65535) {
2990 nla_put_u16(msg
, IFLA_VXLAN_PORT
, htons(port
));
2992 if ((cur
= tb_data
[VXLAN_DATA_ATTR_RXCSUM
])) {
2993 bool rxcsum
= blobmsg_get_bool(cur
);
2994 nla_put_u8(msg
, IFLA_VXLAN_UDP_ZERO_CSUM6_RX
, !rxcsum
);
2997 if ((cur
= tb_data
[VXLAN_DATA_ATTR_TXCSUM
])) {
2998 bool txcsum
= blobmsg_get_bool(cur
);
2999 nla_put_u8(msg
, IFLA_VXLAN_UDP_CSUM
, txcsum
);
3000 nla_put_u8(msg
, IFLA_VXLAN_UDP_ZERO_CSUM6_TX
, !txcsum
);
3003 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
3004 char *str
= blobmsg_get_string(cur
);
3007 if (strcmp(str
, "inherit")) {
3008 if (!system_tos_aton(str
, &tos
)) {
3014 nla_put_u8(msg
, IFLA_VXLAN_TOS
, tos
);
3017 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
3018 uint32_t ttl
= blobmsg_get_u32(cur
);
3019 if (ttl
< 1 || ttl
> 255) {
3024 nla_put_u8(msg
, IFLA_VXLAN_TTL
, ttl
);
3027 nla_nest_end(msg
, data
);
3028 nla_nest_end(msg
, linkinfo
);
3030 ret
= system_rtnl_call(msg
);
3032 D(SYSTEM
, "Error adding vxlan '%s': %d\n", name
, ret
);
3042 static int system_add_sit_tunnel(const char *name
, const unsigned int link
, struct blob_attr
**tb
)
3044 struct blob_attr
*cur
;
3047 if (system_add_proto_tunnel(name
, IPPROTO_IPV6
, link
, tb
) < 0)
3051 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
3052 struct blob_attr
*tb_data
[__SIXRD_DATA_ATTR_MAX
];
3054 struct ip_tunnel_6rd p6
;
3056 blobmsg_parse(sixrd_data_attr_list
.params
, __SIXRD_DATA_ATTR_MAX
, tb_data
,
3057 blobmsg_data(cur
), blobmsg_len(cur
));
3059 memset(&p6
, 0, sizeof(p6
));
3061 if ((cur
= tb_data
[SIXRD_DATA_PREFIX
])) {
3062 if (!parse_ip_and_netmask(AF_INET6
, blobmsg_data(cur
),
3063 &p6
.prefix
, &mask
) || mask
> 128) {
3068 p6
.prefixlen
= mask
;
3071 if ((cur
= tb_data
[SIXRD_DATA_RELAY_PREFIX
])) {
3072 if (!parse_ip_and_netmask(AF_INET
, blobmsg_data(cur
),
3073 &p6
.relay_prefix
, &mask
) || mask
> 32) {
3078 p6
.relay_prefixlen
= mask
;
3081 if (tunnel_ioctl(name
, SIOCADD6RD
, &p6
) < 0) {
3091 __system_del_ip_tunnel(name
, tb
);
3095 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
, const unsigned int link
, struct blob_attr
**tb
)
3097 struct blob_attr
*cur
;
3099 struct ip_tunnel_parm p
= {
3108 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
]) &&
3109 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.saddr
) < 1)
3112 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
]) &&
3113 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.daddr
) < 1)
3116 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
3117 set_df
= blobmsg_get_bool(cur
);
3119 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
3120 p
.iph
.ttl
= blobmsg_get_u32(cur
);
3122 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
3123 char *str
= blobmsg_get_string(cur
);
3124 if (strcmp(str
, "inherit")) {
3127 if (!system_tos_aton(str
, &uval
))
3135 p
.iph
.frag_off
= set_df
? htons(IP_DF
) : 0;
3136 /* ttl !=0 and nopmtudisc are incompatible */
3137 if (p
.iph
.ttl
&& p
.iph
.frag_off
== 0)
3140 strncpy(p
.name
, name
, sizeof(p
.name
) - 1);
3142 switch (p
.iph
.protocol
) {
3144 return tunnel_ioctl("tunl0", SIOCADDTUNNEL
, &p
);
3146 return tunnel_ioctl("sit0", SIOCADDTUNNEL
, &p
);
3153 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
)
3155 struct blob_attr
*cur
;
3158 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
3160 str
= blobmsg_data(cur
);
3162 if (!strcmp(str
, "greip") || !strcmp(str
, "gretapip") ||
3163 !strcmp(str
, "greip6") || !strcmp(str
, "gretapip6") ||
3164 !strcmp(str
, "vtiip") || !strcmp(str
, "vtiip6") ||
3165 !strcmp(str
, "vxlan") || !strcmp(str
, "vxlan6"))
3166 return system_link_del(name
);
3168 return tunnel_ioctl(name
, SIOCDELTUNNEL
, NULL
);
3171 int system_del_ip_tunnel(const char *name
, struct blob_attr
*attr
)
3173 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
3175 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
3176 blob_data(attr
), blob_len(attr
));
3178 return __system_del_ip_tunnel(name
, tb
);
3181 int system_update_ipv6_mtu(struct device
*dev
, int mtu
)
3187 snprintf(buf
, sizeof(buf
), "/proc/sys/net/ipv6/conf/%s/mtu",
3190 fd
= open(buf
, O_RDWR
);
3195 ssize_t len
= read(fd
, buf
, sizeof(buf
) - 1);
3202 if (write(fd
, buf
, snprintf(buf
, sizeof(buf
), "%i", mtu
)) > 0)
3211 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
3213 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
3214 struct blob_attr
*cur
;
3217 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
3218 blob_data(attr
), blob_len(attr
));
3220 __system_del_ip_tunnel(name
, tb
);
3222 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
3224 str
= blobmsg_data(cur
);
3226 unsigned int ttl
= 0;
3227 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
3228 ttl
= blobmsg_get_u32(cur
);
3233 unsigned int link
= 0;
3234 if ((cur
= tb
[TUNNEL_ATTR_LINK
])) {
3235 struct interface
*iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
3239 if (iface
->l3_dev
.dev
)
3240 link
= iface
->l3_dev
.dev
->ifindex
;
3243 if (!strcmp(str
, "sit"))
3244 return system_add_sit_tunnel(name
, link
, tb
);
3245 #ifdef IFLA_IPTUN_MAX
3246 else if (!strcmp(str
, "ipip6")) {
3247 return system_add_ip6_tunnel(name
, link
, tb
);
3248 } else if (!strcmp(str
, "greip")) {
3249 return system_add_gre_tunnel(name
, "gre", link
, tb
, false);
3250 } else if (!strcmp(str
, "gretapip")) {
3251 return system_add_gre_tunnel(name
, "gretap", link
, tb
, false);
3252 } else if (!strcmp(str
, "greip6")) {
3253 return system_add_gre_tunnel(name
, "ip6gre", link
, tb
, true);
3254 } else if (!strcmp(str
, "gretapip6")) {
3255 return system_add_gre_tunnel(name
, "ip6gretap", link
, tb
, true);
3257 } else if (!strcmp(str
, "vtiip")) {
3258 return system_add_vti_tunnel(name
, "vti", link
, tb
, false);
3259 } else if (!strcmp(str
, "vtiip6")) {
3260 return system_add_vti_tunnel(name
, "vti6", link
, tb
, true);
3262 #ifdef IFLA_VXLAN_MAX
3263 } else if(!strcmp(str
, "vxlan")) {
3264 return system_add_vxlan(name
, link
, tb
, false);
3265 } else if(!strcmp(str
, "vxlan6")) {
3266 return system_add_vxlan(name
, link
, tb
, true);
3269 } else if (!strcmp(str
, "ipip")) {
3270 return system_add_proto_tunnel(name
, IPPROTO_IPIP
, link
, tb
);