2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
5 * Copyright (C) 2013 Steven Barth <steven@midlink.org>
6 * Copyright (C) 2014 Gioacchino Mazzurco <gio@eigenlab.org>
7 * Copyright (C) 2017 Matthias Schiffer <mschiffer@universe-factory.net>
8 * Copyright (C) 2018 Hans Dedecker <dedeckeh@gmail.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2
12 * as published by the Free Software Foundation
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
21 #include <sys/socket.h>
22 #include <sys/ioctl.h>
24 #include <sys/syscall.h>
27 #include <net/if_arp.h>
30 #include <arpa/inet.h>
31 #include <netinet/ether.h>
32 #include <netinet/in.h>
34 #include <linux/rtnetlink.h>
35 #include <linux/neighbour.h>
36 #include <linux/sockios.h>
38 #include <linux/if_addr.h>
39 #include <linux/if_link.h>
40 #include <linux/if_vlan.h>
41 #include <linux/if_bridge.h>
42 #include <linux/if_tunnel.h>
43 #include <linux/ip6_tunnel.h>
44 #include <linux/ethtool.h>
45 #include <linux/fib_rules.h>
46 #include <linux/veth.h>
47 #include <linux/version.h>
51 #ifndef RTN_FAILED_POLICY
52 #define RTN_FAILED_POLICY 12
55 #ifndef IFA_F_NOPREFIXROUTE
56 #define IFA_F_NOPREFIXROUTE 0x200
60 #define IFA_FLAGS (IFA_MULTICAST + 1)
69 #include <netlink/msg.h>
70 #include <netlink/attr.h>
71 #include <netlink/socket.h>
72 #include <libubox/uloop.h>
80 struct uloop_fd uloop
;
85 static int sock_ioctl
= -1;
86 static struct nl_sock
*sock_rtnl
= NULL
;
88 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
);
89 static void handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
);
90 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
,
91 const unsigned int link
, struct blob_attr
**tb
);
92 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
);
94 static char dev_buf
[256];
97 handler_nl_event(struct uloop_fd
*u
, unsigned int events
)
99 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
101 socklen_t errlen
= sizeof(err
);
104 nl_recvmsgs_default(ev
->sock
);
108 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
113 /* Increase rx buffer size on netlink socket */
115 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
118 /* Request full dump since some info got dropped */
119 struct rtgenmsg msg
= { .rtgen_family
= AF_UNSPEC
};
120 nl_send_simple(ev
->sock
, RTM_GETLINK
, NLM_F_DUMP
, &msg
, sizeof(msg
));
130 uloop_fd_delete(&ev
->uloop
);
134 static struct nl_sock
*
135 create_socket(int protocol
, int groups
)
137 struct nl_sock
*sock
;
139 sock
= nl_socket_alloc();
144 nl_join_groups(sock
, groups
);
146 if (nl_connect(sock
, protocol
)) {
147 nl_socket_free(sock
);
155 create_raw_event_socket(struct event_socket
*ev
, int protocol
, int groups
,
156 uloop_fd_handler cb
, int flags
)
158 ev
->sock
= create_socket(protocol
, groups
);
162 ev
->uloop
.fd
= nl_socket_get_fd(ev
->sock
);
164 if (uloop_fd_add(&ev
->uloop
, ULOOP_READ
|flags
))
171 create_event_socket(struct event_socket
*ev
, int protocol
,
172 int (*cb
)(struct nl_msg
*msg
, void *arg
))
174 if (!create_raw_event_socket(ev
, protocol
, 0, handler_nl_event
, ULOOP_ERROR_CB
))
177 /* Install the valid custom callback handler */
178 nl_socket_modify_cb(ev
->sock
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, NULL
);
180 /* Disable sequence number checking on event sockets */
181 nl_socket_disable_seq_check(ev
->sock
);
183 /* Increase rx buffer size to 65K on event sockets */
185 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
192 create_hotplug_event_socket(struct event_socket
*ev
, int protocol
,
193 void (*cb
)(struct uloop_fd
*u
, unsigned int events
))
195 if (!create_raw_event_socket(ev
, protocol
, 1, cb
, ULOOP_ERROR_CB
))
198 /* Increase rx buffer size to 65K on event sockets */
200 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
207 system_rtn_aton(const char *src
, unsigned int *dst
)
212 if (!strcmp(src
, "local"))
214 else if (!strcmp(src
, "nat"))
216 else if (!strcmp(src
, "broadcast"))
218 else if (!strcmp(src
, "anycast"))
220 else if (!strcmp(src
, "multicast"))
222 else if (!strcmp(src
, "prohibit"))
224 else if (!strcmp(src
, "unreachable"))
226 else if (!strcmp(src
, "blackhole"))
228 else if (!strcmp(src
, "xresolve"))
230 else if (!strcmp(src
, "unicast"))
232 else if (!strcmp(src
, "throw"))
234 else if (!strcmp(src
, "failed_policy"))
235 n
= RTN_FAILED_POLICY
;
237 n
= strtoul(src
, &e
, 0);
238 if (!e
|| *e
|| e
== src
|| n
> 255)
247 system_tos_aton(const char *src
, unsigned *dst
)
251 *dst
= strtoul(src
, &e
, 16);
252 if (e
== src
|| *e
|| *dst
> 255)
258 int system_init(void)
260 static struct event_socket rtnl_event
;
261 static struct event_socket hotplug_event
;
263 sock_ioctl
= socket(AF_LOCAL
, SOCK_DGRAM
, 0);
264 system_fd_set_cloexec(sock_ioctl
);
266 /* Prepare socket for routing / address control */
267 sock_rtnl
= create_socket(NETLINK_ROUTE
, 0);
271 if (!create_event_socket(&rtnl_event
, NETLINK_ROUTE
, cb_rtnl_event
))
274 if (!create_hotplug_event_socket(&hotplug_event
, NETLINK_KOBJECT_UEVENT
,
275 handle_hotplug_event
))
278 /* Receive network link events form kernel */
279 nl_socket_add_membership(rtnl_event
.sock
, RTNLGRP_LINK
);
284 static void system_set_sysctl(const char *path
, const char *val
)
288 fd
= open(path
, O_WRONLY
);
292 if (write(fd
, val
, strlen(val
))) {}
296 static void system_set_dev_sysctl(const char *path
, const char *device
, const char *val
)
298 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
299 system_set_sysctl(dev_buf
, val
);
302 static void system_set_disable_ipv6(struct device
*dev
, const char *val
)
304 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev
->ifname
, val
);
307 static void system_set_rpfilter(struct device
*dev
, const char *val
)
309 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter", dev
->ifname
, val
);
312 static void system_set_acceptlocal(struct device
*dev
, const char *val
)
314 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local", dev
->ifname
, val
);
317 static void system_set_igmpversion(struct device
*dev
, const char *val
)
319 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version", dev
->ifname
, val
);
322 static void system_set_mldversion(struct device
*dev
, const char *val
)
324 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version", dev
->ifname
, val
);
327 static void system_set_neigh4reachabletime(struct device
*dev
, const char *val
)
329 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
332 static void system_set_neigh6reachabletime(struct device
*dev
, const char *val
)
334 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
337 static void system_set_neigh4gcstaletime(struct device
*dev
, const char *val
)
339 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time", dev
->ifname
, val
);
342 static void system_set_neigh6gcstaletime(struct device
*dev
, const char *val
)
344 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time", dev
->ifname
, val
);
347 static void system_set_neigh4locktime(struct device
*dev
, const char *val
)
349 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime", dev
->ifname
, val
);
352 static void system_set_dadtransmits(struct device
*dev
, const char *val
)
354 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits", dev
->ifname
, val
);
357 static void system_bridge_set_multicast_to_unicast(struct device
*dev
, const char *val
)
359 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_to_unicast", dev
->ifname
, val
);
362 static void system_bridge_set_multicast_fast_leave(struct device
*dev
, const char *val
)
364 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_fast_leave", dev
->ifname
, val
);
367 static void system_bridge_set_hairpin_mode(struct device
*dev
, const char *val
)
369 system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev
->ifname
, val
);
372 static void system_bridge_set_isolated(struct device
*dev
, const char *val
)
374 system_set_dev_sysctl("/sys/class/net/%s/brport/isolated", dev
->ifname
, val
);
377 static void system_bridge_set_multicast_router(struct device
*dev
, const char *val
, bool bridge
)
379 system_set_dev_sysctl(bridge
? "/sys/class/net/%s/bridge/multicast_router" :
380 "/sys/class/net/%s/brport/multicast_router",
384 static void system_bridge_set_robustness(struct device
*dev
, const char *val
)
386 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_count",
388 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_count",
392 static void system_bridge_set_query_interval(struct device
*dev
, const char *val
)
394 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_interval",
398 static void system_bridge_set_query_response_interval(struct device
*dev
, const char *val
)
400 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_response_interval",
404 static void system_bridge_set_last_member_interval(struct device
*dev
, const char *val
)
406 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_interval",
410 static void system_bridge_set_membership_interval(struct device
*dev
, const char *val
)
412 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_membership_interval",
416 static void system_bridge_set_other_querier_timeout(struct device
*dev
, const char *val
)
418 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier_interval",
422 static void system_bridge_set_startup_query_interval(struct device
*dev
, const char *val
)
424 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_interval",
428 static void system_bridge_set_stp_state(struct device
*dev
, const char *val
)
430 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/stp_state", dev
->ifname
, val
);
433 static void system_bridge_set_forward_delay(struct device
*dev
, const char *val
)
435 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/forward_delay", dev
->ifname
, val
);
438 static void system_bridge_set_priority(struct device
*dev
, const char *val
)
440 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/priority", dev
->ifname
, val
);
443 static void system_bridge_set_ageing_time(struct device
*dev
, const char *val
)
445 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/ageing_time", dev
->ifname
, val
);
448 static void system_bridge_set_hello_time(struct device
*dev
, const char *val
)
450 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hello_time", dev
->ifname
, val
);
453 static void system_bridge_set_max_age(struct device
*dev
, const char *val
)
455 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/max_age", dev
->ifname
, val
);
458 static void system_bridge_set_learning(struct device
*dev
, const char *val
)
460 system_set_dev_sysctl("/sys/class/net/%s/brport/learning", dev
->ifname
, val
);
463 static void system_bridge_set_unicast_flood(struct device
*dev
, const char *val
)
465 system_set_dev_sysctl("/sys/class/net/%s/brport/unicast_flood", dev
->ifname
, val
);
468 static void system_set_sendredirects(struct device
*dev
, const char *val
)
470 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects", dev
->ifname
, val
);
473 static int system_get_sysctl(const char *path
, char *buf
, const size_t buf_sz
)
475 int fd
= -1, ret
= -1;
477 fd
= open(path
, O_RDONLY
);
481 ssize_t len
= read(fd
, buf
, buf_sz
- 1);
495 system_get_dev_sysctl(const char *path
, const char *device
, char *buf
, const size_t buf_sz
)
497 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
498 return system_get_sysctl(dev_buf
, buf
, buf_sz
);
501 static int system_get_disable_ipv6(struct device
*dev
, char *buf
, const size_t buf_sz
)
503 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
504 dev
->ifname
, buf
, buf_sz
);
507 static int system_get_rpfilter(struct device
*dev
, char *buf
, const size_t buf_sz
)
509 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
510 dev
->ifname
, buf
, buf_sz
);
513 static int system_get_acceptlocal(struct device
*dev
, char *buf
, const size_t buf_sz
)
515 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
516 dev
->ifname
, buf
, buf_sz
);
519 static int system_get_igmpversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
521 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
522 dev
->ifname
, buf
, buf_sz
);
525 static int system_get_mldversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
527 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
528 dev
->ifname
, buf
, buf_sz
);
531 static int system_get_neigh4reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
533 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
534 dev
->ifname
, buf
, buf_sz
);
537 static int system_get_neigh6reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
539 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
540 dev
->ifname
, buf
, buf_sz
);
543 static int system_get_neigh4gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
545 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time",
546 dev
->ifname
, buf
, buf_sz
);
549 static int system_get_neigh6gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
551 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time",
552 dev
->ifname
, buf
, buf_sz
);
555 static int system_get_neigh4locktime(struct device
*dev
, char *buf
, const size_t buf_sz
)
557 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime",
558 dev
->ifname
, buf
, buf_sz
);
561 static int system_get_dadtransmits(struct device
*dev
, char *buf
, const size_t buf_sz
)
563 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
564 dev
->ifname
, buf
, buf_sz
);
567 static int system_get_sendredirects(struct device
*dev
, char *buf
, const size_t buf_sz
)
569 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects",
570 dev
->ifname
, buf
, buf_sz
);
573 /* Evaluate netlink messages */
574 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
576 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
577 struct nlattr
*nla
[__IFLA_MAX
];
581 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
584 nlmsg_parse(nh
, sizeof(struct ifinfomsg
), nla
, __IFLA_MAX
- 1, NULL
);
585 if (!nla
[IFLA_IFNAME
])
588 struct device
*dev
= device_find(nla_data(nla
[IFLA_IFNAME
]));
592 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev
->ifname
, buf
, sizeof(buf
)))
593 link_state
= strtoul(buf
, NULL
, 0);
595 device_set_link(dev
, link_state
? true : false);
602 handle_hotplug_msg(char *data
, int size
)
604 const char *subsystem
= NULL
, *interface
= NULL
, *interface_old
= NULL
;
605 char *cur
, *end
, *sep
;
608 bool add
, move
= false;
610 if (!strncmp(data
, "add@", 4))
612 else if (!strncmp(data
, "remove@", 7))
614 else if (!strncmp(data
, "move@", 5)) {
621 skip
= strlen(data
) + 1;
624 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
625 skip
= strlen(cur
) + 1;
627 sep
= strchr(cur
, '=');
632 if (!strcmp(cur
, "INTERFACE"))
634 else if (!strcmp(cur
, "SUBSYSTEM")) {
636 if (strcmp(subsystem
, "net") != 0)
638 } else if (!strcmp(cur
, "DEVPATH_OLD")) {
639 interface_old
= strrchr(sep
+ 1, '/');
645 if (subsystem
&& interface
) {
646 if (move
&& interface_old
)
655 dev
= device_find(interface_old
);
659 if (dev
->type
!= &simple_device_type
)
662 device_set_present(dev
, false);
665 dev
= device_find(interface
);
669 if (dev
->type
!= &simple_device_type
)
672 if (add
&& system_if_force_external(dev
->ifname
))
675 device_set_present(dev
, add
);
679 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
681 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
682 struct sockaddr_nl nla
;
683 unsigned char *buf
= NULL
;
686 socklen_t errlen
= sizeof(err
);
689 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
691 handle_hotplug_msg((char *) buf
, size
);
698 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
703 /* Increase rx buffer size on netlink socket */
705 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
716 uloop_fd_delete(&ev
->uloop
);
720 static int system_rtnl_call(struct nl_msg
*msg
)
724 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
730 return nl_wait_for_ack(sock_rtnl
);
733 int system_bridge_delbr(struct device
*bridge
)
735 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
738 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
742 memset(&ifr
, 0, sizeof(ifr
));
744 ifr
.ifr_ifindex
= dev
->ifindex
;
747 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
) - 1);
748 return ioctl(sock_ioctl
, cmd
, &ifr
);
751 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
755 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
756 if (stat(buf
, &st
) < 0)
762 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
768 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
769 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
773 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
781 path
= strrchr(buf
, '/');
789 system_bridge_set_wireless(struct device
*bridge
, struct device
*dev
)
791 bool mcast_to_ucast
= dev
->wireless_ap
;
794 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_TO_UNICAST
&&
795 !bridge
->settings
.multicast_to_unicast
)
796 mcast_to_ucast
= false;
798 if (!mcast_to_ucast
|| dev
->wireless_isolate
)
801 system_bridge_set_multicast_to_unicast(dev
, mcast_to_ucast
? "1" : "0");
802 system_bridge_set_hairpin_mode(dev
, hairpin
? "1" : "0");
805 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
811 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
812 if (!oldbr
|| strcmp(oldbr
, bridge
->ifname
) != 0)
813 ret
= system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
816 system_bridge_set_wireless(bridge
, dev
);
818 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
819 snprintf(buf
, sizeof(buf
), "%u", dev
->settings
.multicast_router
);
820 system_bridge_set_multicast_router(dev
, buf
, false);
823 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_FAST_LEAVE
&&
824 dev
->settings
.multicast_fast_leave
)
825 system_bridge_set_multicast_fast_leave(dev
, "1");
827 if (dev
->settings
.flags
& DEV_OPT_LEARNING
&&
828 !dev
->settings
.learning
)
829 system_bridge_set_learning(dev
, "0");
831 if (dev
->settings
.flags
& DEV_OPT_UNICAST_FLOOD
&&
832 !dev
->settings
.unicast_flood
)
833 system_bridge_set_unicast_flood(dev
, "0");
835 if (dev
->settings
.flags
& DEV_OPT_ISOLATE
&&
836 dev
->settings
.isolate
)
837 system_bridge_set_isolated(dev
, "1");
842 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
844 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
847 int system_if_resolve(struct device
*dev
)
850 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
851 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
852 return ifr
.ifr_ifindex
;
857 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
861 memset(&ifr
, 0, sizeof(ifr
));
862 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
) - 1);
863 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) < 0)
866 ifr
.ifr_flags
|= add
;
867 ifr
.ifr_flags
&= ~rem
;
868 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
880 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
882 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
884 return ifa
->ifa_index
== ifindex
;
887 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
889 struct rtmsg
*r
= NLMSG_DATA(hdr
);
890 struct nlattr
*tb
[__RTA_MAX
];
892 if (r
->rtm_protocol
== RTPROT_KERNEL
&&
893 r
->rtm_family
== AF_INET6
)
896 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
900 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
903 static bool check_rule(struct nlmsghdr
*hdr
, int ifindex
)
908 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
910 struct clear_data
*clr
= arg
;
911 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
912 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
918 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
925 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
932 if (hdr
->nlmsg_type
!= RTM_NEWRULE
)
941 if (!cb(hdr
, clr
->dev
? clr
->dev
->ifindex
: 0))
944 if (type
== RTM_DELRULE
)
945 D(SYSTEM
, "Remove a rule\n");
947 D(SYSTEM
, "Remove %s from device %s\n",
948 type
== RTM_DELADDR
? "an address" : "a route",
951 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
952 hdr
= nlmsg_hdr(clr
->msg
);
953 hdr
->nlmsg_type
= type
;
954 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
956 nl_socket_disable_auto_ack(sock_rtnl
);
957 ret
= nl_send_auto_complete(sock_rtnl
, clr
->msg
);
959 if (type
== RTM_DELRULE
)
960 D(SYSTEM
, "Error deleting a rule: %d\n", ret
);
962 D(SYSTEM
, "Error deleting %s from device '%s': %d\n",
963 type
== RTM_DELADDR
? "an address" : "a route",
964 clr
->dev
->ifname
, ret
);
967 nl_socket_enable_auto_ack(sock_rtnl
);
973 cb_finish_event(struct nl_msg
*msg
, void *arg
)
981 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
984 *pending
= err
->error
;
989 system_if_clear_entries(struct device
*dev
, int type
, int af
)
991 struct clear_data clr
;
995 .rtm_flags
= RTM_F_CLONED
,
997 int flags
= NLM_F_DUMP
;
1006 clr
.size
= sizeof(struct rtgenmsg
);
1009 clr
.size
= sizeof(struct rtmsg
);
1015 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1019 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
1023 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
1024 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
1025 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
1026 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
1028 if (nl_send_auto_complete(sock_rtnl
, clr
.msg
) < 0)
1032 nl_recvmsgs(sock_rtnl
, cb
);
1035 nlmsg_free(clr
.msg
);
1041 * Clear bridge (membership) state and bring down device
1043 void system_if_clear_state(struct device
*dev
)
1045 static char buf
[256];
1047 device_set_ifindex(dev
, system_if_resolve(dev
));
1049 if (dev
->external
|| !dev
->ifindex
)
1052 system_if_flags(dev
->ifname
, 0, IFF_UP
);
1054 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
1055 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
1056 system_bridge_delbr(dev
);
1060 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
1062 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
1063 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
1066 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
1067 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
1068 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
1069 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
1070 system_if_clear_entries(dev
, RTM_GETNEIGH
, AF_INET
);
1071 system_if_clear_entries(dev
, RTM_GETNEIGH
, AF_INET6
);
1072 system_set_disable_ipv6(dev
, "0");
1075 static inline unsigned long
1076 sec_to_jiffies(int val
)
1078 return (unsigned long) val
* 100;
1081 static void system_bridge_conf_multicast_deps(struct device
*bridge
,
1082 struct bridge_config
*cfg
,
1088 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
||
1089 cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
||
1090 cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
1091 val
= cfg
->robustness
* cfg
->query_interval
+
1092 cfg
->query_response_interval
;
1094 snprintf(buf
, buf_len
, "%i", val
);
1095 system_bridge_set_membership_interval(bridge
, buf
);
1097 val
= cfg
->robustness
* cfg
->query_interval
+
1098 cfg
->query_response_interval
/ 2;
1100 snprintf(buf
, buf_len
, "%i", val
);
1101 system_bridge_set_other_querier_timeout(bridge
, buf
);
1104 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
1105 val
= cfg
->query_interval
/ 4;
1107 snprintf(buf
, buf_len
, "%i", val
);
1108 system_bridge_set_startup_query_interval(bridge
, buf
);
1112 static void system_bridge_conf_multicast(struct device
*bridge
,
1113 struct bridge_config
*cfg
,
1117 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
1118 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
1120 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
1121 bridge
->ifname
, cfg
->multicast_querier
? "1" : "0");
1123 snprintf(buf
, buf_len
, "%i", cfg
->hash_max
);
1124 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
1125 bridge
->ifname
, buf
);
1127 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
1128 snprintf(buf
, buf_len
, "%u", bridge
->settings
.multicast_router
);
1129 system_bridge_set_multicast_router(bridge
, buf
, true);
1132 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
) {
1133 snprintf(buf
, buf_len
, "%i", cfg
->robustness
);
1134 system_bridge_set_robustness(bridge
, buf
);
1137 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
1138 snprintf(buf
, buf_len
, "%i", cfg
->query_interval
);
1139 system_bridge_set_query_interval(bridge
, buf
);
1142 if (cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
1143 snprintf(buf
, buf_len
, "%i", cfg
->query_response_interval
);
1144 system_bridge_set_query_response_interval(bridge
, buf
);
1147 if (cfg
->flags
& BRIDGE_OPT_LAST_MEMBER_INTERVAL
) {
1148 snprintf(buf
, buf_len
, "%i", cfg
->last_member_interval
);
1149 system_bridge_set_last_member_interval(bridge
, buf
);
1152 system_bridge_conf_multicast_deps(bridge
, cfg
, buf
, buf_len
);
1155 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
1159 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
1162 system_bridge_set_stp_state(bridge
, cfg
->stp
? "1" : "0");
1164 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->forward_delay
));
1165 system_bridge_set_forward_delay(bridge
, buf
);
1167 system_bridge_conf_multicast(bridge
, cfg
, buf
, sizeof(buf
));
1169 snprintf(buf
, sizeof(buf
), "%d", cfg
->priority
);
1170 system_bridge_set_priority(bridge
, buf
);
1172 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
1173 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->ageing_time
));
1174 system_bridge_set_ageing_time(bridge
, buf
);
1177 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
1178 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->hello_time
));
1179 system_bridge_set_hello_time(bridge
, buf
);
1182 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
1183 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->max_age
));
1184 system_bridge_set_max_age(bridge
, buf
);
1190 int system_macvlan_add(struct device
*macvlan
, struct device
*dev
, struct macvlan_config
*cfg
)
1193 struct nlattr
*linkinfo
, *data
;
1194 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
1196 static const struct {
1198 enum macvlan_mode val
;
1200 { "private", MACVLAN_MODE_PRIVATE
},
1201 { "vepa", MACVLAN_MODE_VEPA
},
1202 { "bridge", MACVLAN_MODE_BRIDGE
},
1203 { "passthru", MACVLAN_MODE_PASSTHRU
},
1206 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1211 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1213 if (cfg
->flags
& MACVLAN_OPT_MACADDR
)
1214 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1215 nla_put_string(msg
, IFLA_IFNAME
, macvlan
->ifname
);
1216 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1218 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1219 goto nla_put_failure
;
1221 nla_put_string(msg
, IFLA_INFO_KIND
, "macvlan");
1223 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1224 goto nla_put_failure
;
1227 for (i
= 0; i
< ARRAY_SIZE(modes
); i
++) {
1228 if (strcmp(cfg
->mode
, modes
[i
].name
) != 0)
1231 nla_put_u32(msg
, IFLA_MACVLAN_MODE
, modes
[i
].val
);
1236 nla_nest_end(msg
, data
);
1237 nla_nest_end(msg
, linkinfo
);
1239 rv
= system_rtnl_call(msg
);
1241 D(SYSTEM
, "Error adding macvlan '%s' over '%s': %d\n", macvlan
->ifname
, dev
->ifname
, rv
);
1250 int system_link_netns_move(struct device
*dev
, int netns_fd
, const char *target_ifname
)
1253 struct ifinfomsg iim
= {
1254 .ifi_family
= AF_UNSPEC
,
1260 iim
.ifi_index
= system_if_resolve(dev
);
1261 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
);
1266 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1268 nla_put_string(msg
, IFLA_IFNAME
, target_ifname
);
1270 nla_put_u32(msg
, IFLA_NET_NS_FD
, netns_fd
);
1271 return system_rtnl_call(msg
);
1274 static int system_link_del(const char *ifname
)
1277 struct ifinfomsg iim
= {
1278 .ifi_family
= AF_UNSPEC
,
1282 msg
= nlmsg_alloc_simple(RTM_DELLINK
, NLM_F_REQUEST
);
1287 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1288 nla_put_string(msg
, IFLA_IFNAME
, ifname
);
1289 return system_rtnl_call(msg
);
1292 int system_macvlan_del(struct device
*macvlan
)
1294 return system_link_del(macvlan
->ifname
);
1297 int system_netns_open(const pid_t target_ns
)
1299 char pid_net_path
[PATH_MAX
];
1301 snprintf(pid_net_path
, sizeof(pid_net_path
), "/proc/%u/ns/net", target_ns
);
1303 return open(pid_net_path
, O_RDONLY
);
1306 int system_netns_set(int netns_fd
)
1308 return setns(netns_fd
, CLONE_NEWNET
);
1311 int system_veth_add(struct device
*veth
, struct veth_config
*cfg
)
1314 struct ifinfomsg empty_iim
= {};
1315 struct nlattr
*linkinfo
, *data
, *veth_info
;
1318 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1323 nlmsg_append(msg
, &empty_iim
, sizeof(empty_iim
), 0);
1325 if (cfg
->flags
& VETH_OPT_MACADDR
)
1326 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1327 nla_put_string(msg
, IFLA_IFNAME
, veth
->ifname
);
1329 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1330 goto nla_put_failure
;
1332 nla_put_string(msg
, IFLA_INFO_KIND
, "veth");
1334 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1335 goto nla_put_failure
;
1337 if (!(veth_info
= nla_nest_start(msg
, VETH_INFO_PEER
)))
1338 goto nla_put_failure
;
1340 nlmsg_append(msg
, &empty_iim
, sizeof(empty_iim
), 0);
1342 if (cfg
->flags
& VETH_OPT_PEER_NAME
)
1343 nla_put_string(msg
, IFLA_IFNAME
, cfg
->peer_name
);
1344 if (cfg
->flags
& VETH_OPT_PEER_MACADDR
)
1345 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->peer_macaddr
), cfg
->peer_macaddr
);
1347 nla_nest_end(msg
, veth_info
);
1348 nla_nest_end(msg
, data
);
1349 nla_nest_end(msg
, linkinfo
);
1351 rv
= system_rtnl_call(msg
);
1353 if (cfg
->flags
& VETH_OPT_PEER_NAME
)
1354 D(SYSTEM
, "Error adding veth '%s' with peer '%s': %d\n", veth
->ifname
, cfg
->peer_name
, rv
);
1356 D(SYSTEM
, "Error adding veth '%s': %d\n", veth
->ifname
, rv
);
1366 int system_veth_del(struct device
*veth
)
1368 return system_link_del(veth
->ifname
);
1371 static int system_vlan(struct device
*dev
, int id
)
1373 struct vlan_ioctl_args ifr
= {
1374 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
1375 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
1378 if (ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
) < 0)
1382 ifr
.cmd
= DEL_VLAN_CMD
;
1385 ifr
.cmd
= ADD_VLAN_CMD
;
1388 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
1389 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1392 int system_vlan_add(struct device
*dev
, int id
)
1394 return system_vlan(dev
, id
);
1397 int system_vlan_del(struct device
*dev
)
1399 return system_vlan(dev
, -1);
1402 int system_vlandev_add(struct device
*vlandev
, struct device
*dev
, struct vlandev_config
*cfg
)
1405 struct nlattr
*linkinfo
, *data
, *qos
;
1406 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
};
1407 struct vlan_qos_mapping
*elem
;
1408 struct ifla_vlan_qos_mapping nl_qos_map
;
1411 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1416 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1417 nla_put_string(msg
, IFLA_IFNAME
, vlandev
->ifname
);
1418 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1420 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1421 goto nla_put_failure
;
1423 nla_put_string(msg
, IFLA_INFO_KIND
, "vlan");
1425 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1426 goto nla_put_failure
;
1428 nla_put_u16(msg
, IFLA_VLAN_ID
, cfg
->vid
);
1430 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1431 nla_put_u16(msg
, IFLA_VLAN_PROTOCOL
, htons(cfg
->proto
));
1433 if(cfg
->proto
== VLAN_PROTO_8021AD
)
1434 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
);
1437 if (!(qos
= nla_nest_start(msg
, IFLA_VLAN_INGRESS_QOS
)))
1438 goto nla_put_failure
;
1440 vlist_simple_for_each_element(&cfg
->ingress_qos_mapping_list
, elem
, node
) {
1441 nl_qos_map
.from
= elem
->from
;
1442 nl_qos_map
.to
= elem
->to
;
1443 nla_put(msg
, IFLA_VLAN_QOS_MAPPING
, sizeof(nl_qos_map
), &nl_qos_map
);
1445 nla_nest_end(msg
, qos
);
1447 if (!(qos
= nla_nest_start(msg
, IFLA_VLAN_EGRESS_QOS
)))
1448 goto nla_put_failure
;
1450 vlist_simple_for_each_element(&cfg
->egress_qos_mapping_list
, elem
, node
) {
1451 nl_qos_map
.from
= elem
->from
;
1452 nl_qos_map
.to
= elem
->to
;
1453 nla_put(msg
, IFLA_VLAN_QOS_MAPPING
, sizeof(nl_qos_map
), &nl_qos_map
);
1455 nla_nest_end(msg
, qos
);
1457 nla_nest_end(msg
, data
);
1458 nla_nest_end(msg
, linkinfo
);
1460 rv
= system_rtnl_call(msg
);
1462 D(SYSTEM
, "Error adding vlandev '%s' over '%s': %d\n", vlandev
->ifname
, dev
->ifname
, rv
);
1471 int system_vlandev_del(struct device
*vlandev
)
1473 return system_link_del(vlandev
->ifname
);
1477 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
1482 memset(&ifr
, 0, sizeof(ifr
));
1483 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1485 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
1486 s
->mtu
= ifr
.ifr_mtu
;
1487 s
->flags
|= DEV_OPT_MTU
;
1490 s
->mtu6
= system_update_ipv6_mtu(dev
, 0);
1492 s
->flags
|= DEV_OPT_MTU6
;
1494 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
1495 s
->txqueuelen
= ifr
.ifr_qlen
;
1496 s
->flags
|= DEV_OPT_TXQUEUELEN
;
1499 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
1500 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
1501 s
->flags
|= DEV_OPT_MACADDR
;
1504 if (!system_get_disable_ipv6(dev
, buf
, sizeof(buf
))) {
1505 s
->ipv6
= !strtoul(buf
, NULL
, 0);
1506 s
->flags
|= DEV_OPT_IPV6
;
1509 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) == 0) {
1510 s
->promisc
= ifr
.ifr_flags
& IFF_PROMISC
;
1511 s
->flags
|= DEV_OPT_PROMISC
;
1513 s
->multicast
= ifr
.ifr_flags
& IFF_MULTICAST
;
1514 s
->flags
|= DEV_OPT_MULTICAST
;
1517 if (!system_get_rpfilter(dev
, buf
, sizeof(buf
))) {
1518 s
->rpfilter
= strtoul(buf
, NULL
, 0);
1519 s
->flags
|= DEV_OPT_RPFILTER
;
1522 if (!system_get_acceptlocal(dev
, buf
, sizeof(buf
))) {
1523 s
->acceptlocal
= strtoul(buf
, NULL
, 0);
1524 s
->flags
|= DEV_OPT_ACCEPTLOCAL
;
1527 if (!system_get_igmpversion(dev
, buf
, sizeof(buf
))) {
1528 s
->igmpversion
= strtoul(buf
, NULL
, 0);
1529 s
->flags
|= DEV_OPT_IGMPVERSION
;
1532 if (!system_get_mldversion(dev
, buf
, sizeof(buf
))) {
1533 s
->mldversion
= strtoul(buf
, NULL
, 0);
1534 s
->flags
|= DEV_OPT_MLDVERSION
;
1537 if (!system_get_neigh4reachabletime(dev
, buf
, sizeof(buf
))) {
1538 s
->neigh4reachabletime
= strtoul(buf
, NULL
, 0);
1539 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1542 if (!system_get_neigh6reachabletime(dev
, buf
, sizeof(buf
))) {
1543 s
->neigh6reachabletime
= strtoul(buf
, NULL
, 0);
1544 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1547 if (!system_get_neigh4locktime(dev
, buf
, sizeof(buf
))) {
1548 s
->neigh4locktime
= strtol(buf
, NULL
, 0);
1549 s
->flags
|= DEV_OPT_NEIGHLOCKTIME
;
1552 if (!system_get_neigh4gcstaletime(dev
, buf
, sizeof(buf
))) {
1553 s
->neigh4gcstaletime
= strtoul(buf
, NULL
, 0);
1554 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1557 if (!system_get_neigh6gcstaletime(dev
, buf
, sizeof(buf
))) {
1558 s
->neigh6gcstaletime
= strtoul(buf
, NULL
, 0);
1559 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1562 if (!system_get_dadtransmits(dev
, buf
, sizeof(buf
))) {
1563 s
->dadtransmits
= strtoul(buf
, NULL
, 0);
1564 s
->flags
|= DEV_OPT_DADTRANSMITS
;
1567 if (!system_get_sendredirects(dev
, buf
, sizeof(buf
))) {
1568 s
->sendredirects
= strtoul(buf
, NULL
, 0);
1569 s
->flags
|= DEV_OPT_SENDREDIRECTS
;
1574 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
, unsigned int apply_mask
)
1579 memset(&ifr
, 0, sizeof(ifr
));
1580 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1581 if (s
->flags
& DEV_OPT_MTU
& apply_mask
) {
1582 ifr
.ifr_mtu
= s
->mtu
;
1583 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
1584 s
->flags
&= ~DEV_OPT_MTU
;
1586 if (s
->flags
& DEV_OPT_MTU6
& apply_mask
) {
1587 system_update_ipv6_mtu(dev
, s
->mtu6
);
1589 if (s
->flags
& DEV_OPT_TXQUEUELEN
& apply_mask
) {
1590 ifr
.ifr_qlen
= s
->txqueuelen
;
1591 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
1592 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
1594 if ((s
->flags
& DEV_OPT_MACADDR
& apply_mask
) && !dev
->external
) {
1595 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
1596 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
1597 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
1598 s
->flags
&= ~DEV_OPT_MACADDR
;
1600 if (s
->flags
& DEV_OPT_IPV6
& apply_mask
)
1601 system_set_disable_ipv6(dev
, s
->ipv6
? "0" : "1");
1602 if (s
->flags
& DEV_OPT_PROMISC
& apply_mask
) {
1603 if (system_if_flags(dev
->ifname
, s
->promisc
? IFF_PROMISC
: 0,
1604 !s
->promisc
? IFF_PROMISC
: 0) < 0)
1605 s
->flags
&= ~DEV_OPT_PROMISC
;
1607 if (s
->flags
& DEV_OPT_RPFILTER
& apply_mask
) {
1608 snprintf(buf
, sizeof(buf
), "%u", s
->rpfilter
);
1609 system_set_rpfilter(dev
, buf
);
1611 if (s
->flags
& DEV_OPT_ACCEPTLOCAL
& apply_mask
)
1612 system_set_acceptlocal(dev
, s
->acceptlocal
? "1" : "0");
1613 if (s
->flags
& DEV_OPT_IGMPVERSION
& apply_mask
) {
1614 snprintf(buf
, sizeof(buf
), "%u", s
->igmpversion
);
1615 system_set_igmpversion(dev
, buf
);
1617 if (s
->flags
& DEV_OPT_MLDVERSION
& apply_mask
) {
1618 snprintf(buf
, sizeof(buf
), "%u", s
->mldversion
);
1619 system_set_mldversion(dev
, buf
);
1621 if (s
->flags
& DEV_OPT_NEIGHREACHABLETIME
& apply_mask
) {
1622 snprintf(buf
, sizeof(buf
), "%u", s
->neigh4reachabletime
);
1623 system_set_neigh4reachabletime(dev
, buf
);
1624 snprintf(buf
, sizeof(buf
), "%u", s
->neigh6reachabletime
);
1625 system_set_neigh6reachabletime(dev
, buf
);
1627 if (s
->flags
& DEV_OPT_NEIGHLOCKTIME
& apply_mask
) {
1628 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4locktime
);
1629 system_set_neigh4locktime(dev
, buf
);
1631 if (s
->flags
& DEV_OPT_NEIGHGCSTALETIME
& apply_mask
) {
1632 snprintf(buf
, sizeof(buf
), "%u", s
->neigh4gcstaletime
);
1633 system_set_neigh4gcstaletime(dev
, buf
);
1634 snprintf(buf
, sizeof(buf
), "%u", s
->neigh6gcstaletime
);
1635 system_set_neigh6gcstaletime(dev
, buf
);
1637 if (s
->flags
& DEV_OPT_DADTRANSMITS
& apply_mask
) {
1638 snprintf(buf
, sizeof(buf
), "%u", s
->dadtransmits
);
1639 system_set_dadtransmits(dev
, buf
);
1641 if (s
->flags
& DEV_OPT_MULTICAST
& apply_mask
) {
1642 if (system_if_flags(dev
->ifname
, s
->multicast
? IFF_MULTICAST
: 0,
1643 !s
->multicast
? IFF_MULTICAST
: 0) < 0)
1644 s
->flags
&= ~DEV_OPT_MULTICAST
;
1646 if (s
->flags
& DEV_OPT_SENDREDIRECTS
& apply_mask
)
1647 system_set_sendredirects(dev
, s
->sendredirects
? "1" : "0");
1650 int system_if_up(struct device
*dev
)
1652 system_if_get_settings(dev
, &dev
->orig_settings
);
1653 /* Only keep orig settings based on what needs to be set */
1654 dev
->orig_settings
.valid_flags
= dev
->orig_settings
.flags
;
1655 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
1656 system_if_apply_settings(dev
, &dev
->settings
, dev
->settings
.flags
);
1657 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
1660 int system_if_down(struct device
*dev
)
1662 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
1663 system_if_apply_settings(dev
, &dev
->orig_settings
, dev
->orig_settings
.flags
);
1667 struct if_check_data
{
1673 #ifndef IFF_LOWER_UP
1674 #define IFF_LOWER_UP 0x10000
1677 static int cb_if_check_valid(struct nl_msg
*msg
, void *arg
)
1679 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
1680 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
1681 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1683 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
1686 device_set_present(chk
->dev
, ifi
->ifi_index
> 0 ? true : false);
1687 device_set_link(chk
->dev
, ifi
->ifi_flags
& IFF_LOWER_UP
? true : false);
1692 static int cb_if_check_ack(struct nl_msg
*msg
, void *arg
)
1694 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1699 static int cb_if_check_error(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
1701 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1703 device_set_present(chk
->dev
, false);
1704 device_set_link(chk
->dev
, false);
1705 chk
->pending
= err
->error
;
1710 int system_if_check(struct device
*dev
)
1712 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1714 struct ifinfomsg ifi
= {
1715 .ifi_family
= AF_UNSPEC
,
1718 struct if_check_data chk
= {
1727 msg
= nlmsg_alloc_simple(RTM_GETLINK
, 0);
1731 if (nlmsg_append(msg
, &ifi
, sizeof(ifi
), 0) ||
1732 nla_put_string(msg
, IFLA_IFNAME
, dev
->ifname
))
1735 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_if_check_valid
, &chk
);
1736 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, cb_if_check_ack
, &chk
);
1737 nl_cb_err(cb
, NL_CB_CUSTOM
, cb_if_check_error
, &chk
);
1739 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
1743 while (chk
.pending
> 0)
1744 nl_recvmsgs(sock_rtnl
, cb
);
1756 system_if_get_parent(struct device
*dev
)
1758 char buf
[64], *devname
;
1759 int ifindex
, iflink
, len
;
1762 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
1763 f
= fopen(buf
, "r");
1767 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
1774 iflink
= strtoul(buf
, NULL
, 0);
1775 ifindex
= system_if_resolve(dev
);
1776 if (!iflink
|| iflink
== ifindex
)
1779 devname
= if_indextoname(iflink
, buf
);
1783 return device_get(devname
, true);
1787 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
1793 fd
= openat(dir_fd
, file
, O_RDONLY
);
1798 len
= read(fd
, buf
, len
- 1);
1802 } else if (len
> 0) {
1805 c
= strchr(buf
, '\n');
1818 read_uint64_file(int dir_fd
, const char *file
, uint64_t *val
)
1823 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
1825 *val
= strtoull(buf
, NULL
, 0);
1830 /* Assume advertised flags == supported flags */
1831 static const struct {
1834 } ethtool_link_modes
[] = {
1835 { ADVERTISED_10baseT_Half
, "10baseT-H" },
1836 { ADVERTISED_10baseT_Full
, "10baseT-F" },
1837 { ADVERTISED_100baseT_Half
, "100baseT-H" },
1838 { ADVERTISED_100baseT_Full
, "100baseT-F" },
1839 { ADVERTISED_1000baseT_Half
, "1000baseT-H" },
1840 { ADVERTISED_1000baseT_Full
, "1000baseT-F" },
1841 { ADVERTISED_1000baseKX_Full
, "1000baseKX-F" },
1842 { ADVERTISED_2500baseX_Full
, "2500baseX-F" },
1843 { ADVERTISED_10000baseT_Full
, "10000baseT-F" },
1844 { ADVERTISED_10000baseKX4_Full
, "10000baseKX4-F" },
1845 { ADVERTISED_10000baseKR_Full
, "10000baseKR-F" },
1846 { ADVERTISED_20000baseMLD2_Full
, "20000baseMLD2-F" },
1847 { ADVERTISED_20000baseKR2_Full
, "20000baseKR2-F" },
1848 { ADVERTISED_40000baseKR4_Full
, "40000baseKR4-F" },
1849 { ADVERTISED_40000baseCR4_Full
, "40000baseCR4-F" },
1850 { ADVERTISED_40000baseSR4_Full
, "40000baseSR4-F" },
1851 { ADVERTISED_40000baseLR4_Full
, "40000baseLR4-F" },
1852 #ifdef ADVERTISED_56000baseKR4_Full
1853 { ADVERTISED_56000baseKR4_Full
, "56000baseKR4-F" },
1854 { ADVERTISED_56000baseCR4_Full
, "56000baseCR4-F" },
1855 { ADVERTISED_56000baseSR4_Full
, "56000baseSR4-F" },
1856 { ADVERTISED_56000baseLR4_Full
, "56000baseLR4-F" },
1860 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
1863 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
1864 if (mask
& ethtool_link_modes
[i
].mask
)
1865 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
1870 system_if_force_external(const char *ifname
)
1875 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/phy80211", ifname
);
1876 return stat(buf
, &s
) == 0;
1880 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
1882 struct ethtool_cmd ecmd
;
1887 memset(&ecmd
, 0, sizeof(ecmd
));
1888 memset(&ifr
, 0, sizeof(ifr
));
1889 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1890 ifr
.ifr_data
= (caddr_t
) &ecmd
;
1891 ecmd
.cmd
= ETHTOOL_GSET
;
1893 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
1894 c
= blobmsg_open_array(b
, "link-advertising");
1895 system_add_link_modes(b
, ecmd
.advertising
);
1896 blobmsg_close_array(b
, c
);
1898 c
= blobmsg_open_array(b
, "link-partner-advertising");
1899 system_add_link_modes(b
, ecmd
.lp_advertising
);
1900 blobmsg_close_array(b
, c
);
1902 c
= blobmsg_open_array(b
, "link-supported");
1903 system_add_link_modes(b
, ecmd
.supported
);
1904 blobmsg_close_array(b
, c
);
1906 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
1907 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
1908 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
1909 blobmsg_add_string_buffer(b
);
1911 blobmsg_add_u8(b
, "autoneg", !!ecmd
.autoneg
);
1918 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
1920 const char *const counters
[] = {
1921 "collisions", "rx_frame_errors", "tx_compressed",
1922 "multicast", "rx_length_errors", "tx_dropped",
1923 "rx_bytes", "rx_missed_errors", "tx_errors",
1924 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1925 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1926 "rx_dropped", "tx_aborted_errors", "tx_packets",
1927 "rx_errors", "tx_bytes", "tx_window_errors",
1928 "rx_fifo_errors", "tx_carrier_errors",
1935 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
1936 stats_dir
= open(buf
, O_DIRECTORY
);
1940 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
1941 if (read_uint64_file(stats_dir
, counters
[i
], &val
))
1942 blobmsg_add_u64(b
, counters
[i
], val
);
1948 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
1950 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
1951 int alen
= v4
? 4 : 16;
1952 unsigned int flags
= 0;
1953 struct ifaddrmsg ifa
= {
1954 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1955 .ifa_prefixlen
= addr
->mask
,
1956 .ifa_index
= dev
->ifindex
,
1960 if (cmd
== RTM_NEWADDR
)
1961 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1963 msg
= nlmsg_alloc_simple(cmd
, flags
);
1967 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
1968 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
1970 if (addr
->broadcast
)
1971 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
1972 if (addr
->point_to_point
)
1973 nla_put_u32(msg
, IFA_ADDRESS
, addr
->point_to_point
);
1975 time_t now
= system_get_rtime();
1976 struct ifa_cacheinfo cinfo
= {0xffffffffU
, 0xffffffffU
, 0, 0};
1978 if (addr
->preferred_until
) {
1979 int64_t preferred
= addr
->preferred_until
- now
;
1982 else if (preferred
> UINT32_MAX
)
1983 preferred
= UINT32_MAX
;
1985 cinfo
.ifa_prefered
= preferred
;
1988 if (addr
->valid_until
) {
1989 int64_t valid
= addr
->valid_until
- now
;
1994 else if (valid
> UINT32_MAX
)
1997 cinfo
.ifa_valid
= valid
;
2000 nla_put(msg
, IFA_CACHEINFO
, sizeof(cinfo
), &cinfo
);
2002 if (cmd
== RTM_NEWADDR
&& (addr
->flags
& DEVADDR_OFFLINK
))
2003 nla_put_u32(msg
, IFA_FLAGS
, IFA_F_NOPREFIXROUTE
);
2006 return system_rtnl_call(msg
);
2009 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
2011 return system_addr(dev
, addr
, RTM_NEWADDR
);
2014 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
2016 return system_addr(dev
, addr
, RTM_DELADDR
);
2019 static int system_neigh(struct device
*dev
, struct device_neighbor
*neighbor
, int cmd
)
2021 int alen
= ((neighbor
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
2022 unsigned int flags
= 0;
2023 struct ndmsg ndm
= {
2024 .ndm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
2025 .ndm_ifindex
= dev
->ifindex
,
2026 .ndm_state
= NUD_PERMANENT
,
2027 .ndm_flags
= (neighbor
->proxy
? NTF_PROXY
: 0) | (neighbor
->router
? NTF_ROUTER
: 0),
2031 if (cmd
== RTM_NEWNEIGH
)
2032 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
2034 msg
= nlmsg_alloc_simple(cmd
, flags
);
2039 nlmsg_append(msg
, &ndm
, sizeof(ndm
), 0);
2041 nla_put(msg
, NDA_DST
, alen
, &neighbor
->addr
);
2042 if (neighbor
->flags
& DEVNEIGH_MAC
)
2043 nla_put(msg
, NDA_LLADDR
, sizeof(neighbor
->macaddr
), &neighbor
->macaddr
);
2046 return system_rtnl_call(msg
);
2049 int system_add_neighbor(struct device
*dev
, struct device_neighbor
*neighbor
)
2051 return system_neigh(dev
, neighbor
, RTM_NEWNEIGH
);
2054 int system_del_neighbor(struct device
*dev
, struct device_neighbor
*neighbor
)
2056 return system_neigh(dev
, neighbor
, RTM_DELNEIGH
);
2059 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
2061 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
2063 unsigned int flags
= 0;
2066 have_gw
= !!route
->nexthop
.in
.s_addr
;
2068 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
2069 route
->nexthop
.in6
.s6_addr32
[1] ||
2070 route
->nexthop
.in6
.s6_addr32
[2] ||
2071 route
->nexthop
.in6
.s6_addr32
[3];
2073 unsigned int table
= (route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))
2074 ? route
->table
: RT_TABLE_MAIN
;
2076 struct rtmsg rtm
= {
2077 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
2078 .rtm_dst_len
= route
->mask
,
2079 .rtm_src_len
= route
->sourcemask
,
2080 .rtm_table
= (table
< 256) ? table
: RT_TABLE_UNSPEC
,
2081 .rtm_protocol
= (route
->flags
& DEVROUTE_PROTO
) ? route
->proto
: RTPROT_STATIC
,
2082 .rtm_scope
= RT_SCOPE_NOWHERE
,
2083 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
2084 .rtm_flags
= (route
->flags
& DEVROUTE_ONLINK
) ? RTNH_F_ONLINK
: 0,
2088 if (cmd
== RTM_NEWROUTE
) {
2089 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
2091 if (!dev
) { /* Add null-route */
2092 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
2093 rtm
.rtm_type
= RTN_UNREACHABLE
;
2096 rtm
.rtm_scope
= (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
2099 if (route
->flags
& DEVROUTE_TYPE
) {
2100 rtm
.rtm_type
= route
->type
;
2101 if (!(route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))) {
2102 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_BROADCAST
||
2103 rtm
.rtm_type
== RTN_NAT
|| rtm
.rtm_type
== RTN_ANYCAST
)
2104 rtm
.rtm_table
= RT_TABLE_LOCAL
;
2107 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_NAT
) {
2108 rtm
.rtm_scope
= RT_SCOPE_HOST
;
2109 } else if (rtm
.rtm_type
== RTN_BROADCAST
|| rtm
.rtm_type
== RTN_MULTICAST
||
2110 rtm
.rtm_type
== RTN_ANYCAST
) {
2111 rtm
.rtm_scope
= RT_SCOPE_LINK
;
2112 } else if (rtm
.rtm_type
== RTN_BLACKHOLE
|| rtm
.rtm_type
== RTN_UNREACHABLE
||
2113 rtm
.rtm_type
== RTN_PROHIBIT
|| rtm
.rtm_type
== RTN_FAILED_POLICY
||
2114 rtm
.rtm_type
== RTN_THROW
) {
2115 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
2120 msg
= nlmsg_alloc_simple(cmd
, flags
);
2124 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
2127 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
2129 if (route
->sourcemask
) {
2130 if (rtm
.rtm_family
== AF_INET
)
2131 nla_put(msg
, RTA_PREFSRC
, alen
, &route
->source
);
2133 nla_put(msg
, RTA_SRC
, alen
, &route
->source
);
2136 if (route
->metric
> 0)
2137 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
2140 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
2143 nla_put_u32(msg
, RTA_OIF
, dev
->ifindex
);
2146 nla_put_u32(msg
, RTA_TABLE
, table
);
2148 if (route
->flags
& DEVROUTE_MTU
) {
2149 struct nlattr
*metrics
;
2151 if (!(metrics
= nla_nest_start(msg
, RTA_METRICS
)))
2152 goto nla_put_failure
;
2154 nla_put_u32(msg
, RTAX_MTU
, route
->mtu
);
2156 nla_nest_end(msg
, metrics
);
2159 return system_rtnl_call(msg
);
2166 int system_add_route(struct device
*dev
, struct device_route
*route
)
2168 return system_rt(dev
, route
, RTM_NEWROUTE
);
2171 int system_del_route(struct device
*dev
, struct device_route
*route
)
2173 return system_rt(dev
, route
, RTM_DELROUTE
);
2176 int system_flush_routes(void)
2178 const char *names
[] = {
2179 "/proc/sys/net/ipv4/route/flush",
2180 "/proc/sys/net/ipv6/route/flush"
2184 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
2185 fd
= open(names
[i
], O_WRONLY
);
2189 if (write(fd
, "-1", 2)) {}
2195 bool system_resolve_rt_type(const char *type
, unsigned int *id
)
2197 return system_rtn_aton(type
, id
);
2200 bool system_resolve_rt_proto(const char *type
, unsigned int *id
)
2204 unsigned int n
, proto
= 256;
2205 n
= strtoul(type
, &e
, 0);
2206 if (!*e
&& e
!= type
)
2208 else if (!strcmp(type
, "unspec"))
2209 proto
= RTPROT_UNSPEC
;
2210 else if (!strcmp(type
, "kernel"))
2211 proto
= RTPROT_KERNEL
;
2212 else if (!strcmp(type
, "boot"))
2213 proto
= RTPROT_BOOT
;
2214 else if (!strcmp(type
, "static"))
2215 proto
= RTPROT_STATIC
;
2216 else if ((f
= fopen("/etc/iproute2/rt_protos", "r")) != NULL
) {
2217 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
) {
2218 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
2221 n
= strtoul(e
, NULL
, 10);
2222 e
= strtok(NULL
, " \t\n");
2224 if (e
&& !strcmp(e
, type
)) {
2239 bool system_resolve_rt_table(const char *name
, unsigned int *id
)
2243 unsigned int n
, table
= RT_TABLE_UNSPEC
;
2245 /* first try to parse table as number */
2246 if ((n
= strtoul(name
, &e
, 0)) > 0 && !*e
)
2249 /* handle well known aliases */
2250 else if (!strcmp(name
, "default"))
2251 table
= RT_TABLE_DEFAULT
;
2252 else if (!strcmp(name
, "main"))
2253 table
= RT_TABLE_MAIN
;
2254 else if (!strcmp(name
, "local"))
2255 table
= RT_TABLE_LOCAL
;
2257 /* try to look up name in /etc/iproute2/rt_tables */
2258 else if ((f
= fopen("/etc/iproute2/rt_tables", "r")) != NULL
)
2260 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
)
2262 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
2265 n
= strtoul(e
, NULL
, 10);
2266 e
= strtok(NULL
, " \t\n");
2268 if (e
&& !strcmp(e
, name
))
2278 if (table
== RT_TABLE_UNSPEC
)
2285 bool system_is_default_rt_table(unsigned int id
)
2287 return (id
== RT_TABLE_MAIN
);
2290 bool system_resolve_rpfilter(const char *filter
, unsigned int *id
)
2295 if (!strcmp(filter
, "strict"))
2297 else if (!strcmp(filter
, "loose"))
2300 n
= strtoul(filter
, &e
, 0);
2301 if (*e
|| e
== filter
|| n
> 2)
2309 static int system_iprule(struct iprule
*rule
, int cmd
)
2311 int alen
= ((rule
->flags
& IPRULE_FAMILY
) == IPRULE_INET4
) ? 4 : 16;
2314 struct rtmsg rtm
= {
2315 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
2316 .rtm_protocol
= RTPROT_STATIC
,
2317 .rtm_scope
= RT_SCOPE_UNIVERSE
,
2318 .rtm_table
= RT_TABLE_UNSPEC
,
2319 .rtm_type
= RTN_UNSPEC
,
2323 if (cmd
== RTM_NEWRULE
)
2324 rtm
.rtm_type
= RTN_UNICAST
;
2327 rtm
.rtm_flags
|= FIB_RULE_INVERT
;
2329 if (rule
->flags
& IPRULE_SRC
)
2330 rtm
.rtm_src_len
= rule
->src_mask
;
2332 if (rule
->flags
& IPRULE_DEST
)
2333 rtm
.rtm_dst_len
= rule
->dest_mask
;
2335 if (rule
->flags
& IPRULE_TOS
)
2336 rtm
.rtm_tos
= rule
->tos
;
2338 if (rule
->flags
& IPRULE_LOOKUP
) {
2339 if (rule
->lookup
< 256)
2340 rtm
.rtm_table
= rule
->lookup
;
2343 if (rule
->flags
& IPRULE_ACTION
)
2344 rtm
.rtm_type
= rule
->action
;
2345 else if (rule
->flags
& IPRULE_GOTO
)
2346 rtm
.rtm_type
= FR_ACT_GOTO
;
2347 else if (!(rule
->flags
& (IPRULE_LOOKUP
| IPRULE_ACTION
| IPRULE_GOTO
)))
2348 rtm
.rtm_type
= FR_ACT_NOP
;
2350 msg
= nlmsg_alloc_simple(cmd
, NLM_F_REQUEST
);
2355 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
2357 if (rule
->flags
& IPRULE_IN
)
2358 nla_put(msg
, FRA_IFNAME
, strlen(rule
->in_dev
) + 1, rule
->in_dev
);
2360 if (rule
->flags
& IPRULE_OUT
)
2361 nla_put(msg
, FRA_OIFNAME
, strlen(rule
->out_dev
) + 1, rule
->out_dev
);
2363 if (rule
->flags
& IPRULE_SRC
)
2364 nla_put(msg
, FRA_SRC
, alen
, &rule
->src_addr
);
2366 if (rule
->flags
& IPRULE_DEST
)
2367 nla_put(msg
, FRA_DST
, alen
, &rule
->dest_addr
);
2369 if (rule
->flags
& IPRULE_PRIORITY
)
2370 nla_put_u32(msg
, FRA_PRIORITY
, rule
->priority
);
2371 else if (cmd
== RTM_NEWRULE
)
2372 nla_put_u32(msg
, FRA_PRIORITY
, rule
->order
);
2374 if (rule
->flags
& IPRULE_FWMARK
)
2375 nla_put_u32(msg
, FRA_FWMARK
, rule
->fwmark
);
2377 if (rule
->flags
& IPRULE_FWMASK
)
2378 nla_put_u32(msg
, FRA_FWMASK
, rule
->fwmask
);
2380 if (rule
->flags
& IPRULE_LOOKUP
) {
2381 if (rule
->lookup
>= 256)
2382 nla_put_u32(msg
, FRA_TABLE
, rule
->lookup
);
2385 if (rule
->flags
& IPRULE_SUP_PREFIXLEN
)
2386 nla_put_u32(msg
, FRA_SUPPRESS_PREFIXLEN
, rule
->sup_prefixlen
);
2388 if (rule
->flags
& IPRULE_GOTO
)
2389 nla_put_u32(msg
, FRA_GOTO
, rule
->gotoid
);
2391 return system_rtnl_call(msg
);
2394 int system_add_iprule(struct iprule
*rule
)
2396 return system_iprule(rule
, RTM_NEWRULE
);
2399 int system_del_iprule(struct iprule
*rule
)
2401 return system_iprule(rule
, RTM_DELRULE
);
2404 int system_flush_iprules(void)
2409 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET
);
2410 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET6
);
2412 memset(&rule
, 0, sizeof(rule
));
2415 rule
.flags
= IPRULE_INET4
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2418 rule
.lookup
= RT_TABLE_LOCAL
;
2419 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2421 rule
.priority
= 32766;
2422 rule
.lookup
= RT_TABLE_MAIN
;
2423 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2425 rule
.priority
= 32767;
2426 rule
.lookup
= RT_TABLE_DEFAULT
;
2427 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2430 rule
.flags
= IPRULE_INET6
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2433 rule
.lookup
= RT_TABLE_LOCAL
;
2434 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2436 rule
.priority
= 32766;
2437 rule
.lookup
= RT_TABLE_MAIN
;
2438 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2443 bool system_resolve_iprule_action(const char *action
, unsigned int *id
)
2445 return system_rtn_aton(action
, id
);
2448 time_t system_get_rtime(void)
2453 if (clock_gettime(CLOCK_MONOTONIC
, &ts
) == 0)
2456 if (gettimeofday(&tv
, NULL
) == 0)
2463 #define IP_DF 0x4000
2466 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
2470 memset(&ifr
, 0, sizeof(ifr
));
2471 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
) - 1);
2472 ifr
.ifr_ifru
.ifru_data
= p
;
2473 return ioctl(sock_ioctl
, cmd
, &ifr
);
2476 #ifdef IFLA_IPTUN_MAX
2477 static int system_add_ip6_tunnel(const char *name
, const unsigned int link
,
2478 struct blob_attr
**tb
)
2480 struct nl_msg
*nlm
= nlmsg_alloc_simple(RTM_NEWLINK
,
2481 NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2482 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
};
2483 struct blob_attr
*cur
;
2484 int ret
= 0, ttl
= 0;
2489 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2490 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2493 nla_put_u32(nlm
, IFLA_LINK
, link
);
2495 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2501 nla_put_string(nlm
, IFLA_INFO_KIND
, "ip6tnl");
2502 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2509 nla_put_u32(nlm
, IFLA_IPTUN_LINK
, link
);
2511 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2512 ttl
= blobmsg_get_u32(cur
);
2514 nla_put_u8(nlm
, IFLA_IPTUN_PROTO
, IPPROTO_IPIP
);
2515 nla_put_u8(nlm
, IFLA_IPTUN_TTL
, (ttl
) ? ttl
: 64);
2517 struct in6_addr in6buf
;
2518 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2519 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2523 nla_put(nlm
, IFLA_IPTUN_LOCAL
, sizeof(in6buf
), &in6buf
);
2526 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2527 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2531 nla_put(nlm
, IFLA_IPTUN_REMOTE
, sizeof(in6buf
), &in6buf
);
2534 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2535 struct blob_attr
*tb_data
[__IPIP6_DATA_ATTR_MAX
];
2536 uint32_t tun_flags
= IP6_TNL_F_IGN_ENCAP_LIMIT
;
2538 blobmsg_parse(ipip6_data_attr_list
.params
, __IPIP6_DATA_ATTR_MAX
, tb_data
,
2539 blobmsg_data(cur
), blobmsg_len(cur
));
2541 if ((cur
= tb_data
[IPIP6_DATA_ENCAPLIMIT
])) {
2542 char *str
= blobmsg_get_string(cur
);
2544 if (strcmp(str
, "ignore")) {
2546 unsigned encap_limit
= strtoul(str
, &e
, 0);
2548 if (e
== str
|| *e
|| encap_limit
> 255) {
2553 nla_put_u8(nlm
, IFLA_IPTUN_ENCAP_LIMIT
, encap_limit
);
2554 tun_flags
&= ~IP6_TNL_F_IGN_ENCAP_LIMIT
;
2558 #ifdef IFLA_IPTUN_FMR_MAX
2559 if ((cur
= tb_data
[IPIP6_DATA_FMRS
])) {
2560 struct blob_attr
*rcur
;
2561 unsigned rrem
, fmrcnt
= 0;
2562 struct nlattr
*fmrs
= nla_nest_start(nlm
, IFLA_IPTUN_FMRS
);
2569 blobmsg_for_each_attr(rcur
, cur
, rrem
) {
2570 struct blob_attr
*tb_fmr
[__FMR_DATA_ATTR_MAX
], *tb_cur
;
2571 struct in6_addr ip6prefix
;
2572 struct in_addr ip4prefix
;
2573 unsigned ip4len
, ip6len
, ealen
, offset
;
2575 blobmsg_parse(fmr_data_attr_list
.params
, __FMR_DATA_ATTR_MAX
, tb_fmr
,
2576 blobmsg_data(rcur
), blobmsg_len(rcur
));
2578 if (!(tb_cur
= tb_fmr
[FMR_DATA_PREFIX6
]) ||
2579 !parse_ip_and_netmask(AF_INET6
,
2580 blobmsg_data(tb_cur
), &ip6prefix
,
2586 if (!(tb_cur
= tb_fmr
[FMR_DATA_PREFIX4
]) ||
2587 !parse_ip_and_netmask(AF_INET
,
2588 blobmsg_data(tb_cur
), &ip4prefix
,
2594 if (!(tb_cur
= tb_fmr
[FMR_DATA_EALEN
])) {
2598 ealen
= blobmsg_get_u32(tb_cur
);
2600 if (!(tb_cur
= tb_fmr
[FMR_DATA_OFFSET
])) {
2604 offset
= blobmsg_get_u32(tb_cur
);
2606 struct nlattr
*rule
= nla_nest_start(nlm
, ++fmrcnt
);
2612 nla_put(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX
, sizeof(ip6prefix
), &ip6prefix
);
2613 nla_put(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX
, sizeof(ip4prefix
), &ip4prefix
);
2614 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX_LEN
, ip6len
);
2615 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX_LEN
, ip4len
);
2616 nla_put_u8(nlm
, IFLA_IPTUN_FMR_EA_LEN
, ealen
);
2617 nla_put_u8(nlm
, IFLA_IPTUN_FMR_OFFSET
, offset
);
2619 nla_nest_end(nlm
, rule
);
2622 nla_nest_end(nlm
, fmrs
);
2626 nla_put_u32(nlm
, IFLA_IPTUN_FLAGS
, tun_flags
);
2629 nla_nest_end(nlm
, infodata
);
2630 nla_nest_end(nlm
, linkinfo
);
2632 return system_rtnl_call(nlm
);
2640 #ifdef IFLA_IPTUN_MAX
2641 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
2642 static int system_add_gre_tunnel(const char *name
, const char *kind
,
2643 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2646 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2647 struct blob_attr
*cur
;
2648 uint32_t ikey
= 0, okey
= 0, flowinfo
= 0, flags6
= IP6_TNL_F_IGN_ENCAP_LIMIT
;
2649 uint16_t iflags
= 0, oflags
= 0;
2651 int ret
= 0, ttl
= 0;
2652 unsigned encap_limit
= 0;
2654 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2658 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2659 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2661 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2667 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2668 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2675 nla_put_u32(nlm
, IFLA_GRE_LINK
, link
);
2677 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2678 ttl
= blobmsg_get_u32(cur
);
2680 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2681 char *str
= blobmsg_get_string(cur
);
2682 if (strcmp(str
, "inherit")) {
2685 if (!system_tos_aton(str
, &uval
)) {
2691 flowinfo
|= htonl(uval
<< 20) & IP6_FLOWINFO_TCLASS
;
2696 flags6
|= IP6_TNL_F_USE_ORIG_TCLASS
;
2702 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2703 struct blob_attr
*tb_data
[__GRE_DATA_ATTR_MAX
];
2705 blobmsg_parse(gre_data_attr_list
.params
, __GRE_DATA_ATTR_MAX
, tb_data
,
2706 blobmsg_data(cur
), blobmsg_len(cur
));
2708 if ((cur
= tb_data
[GRE_DATA_IKEY
])) {
2709 if ((ikey
= blobmsg_get_u32(cur
)))
2713 if ((cur
= tb_data
[GRE_DATA_OKEY
])) {
2714 if ((okey
= blobmsg_get_u32(cur
)))
2718 if ((cur
= tb_data
[GRE_DATA_ICSUM
])) {
2719 if (blobmsg_get_bool(cur
))
2723 if ((cur
= tb_data
[GRE_DATA_OCSUM
])) {
2724 if (blobmsg_get_bool(cur
))
2728 if ((cur
= tb_data
[GRE_DATA_ISEQNO
])) {
2729 if (blobmsg_get_bool(cur
))
2733 if ((cur
= tb_data
[GRE_DATA_OSEQNO
])) {
2734 if (blobmsg_get_bool(cur
))
2738 if ((cur
= tb_data
[GRE_DATA_ENCAPLIMIT
])) {
2739 char *str
= blobmsg_get_string(cur
);
2741 if (strcmp(str
, "ignore")) {
2744 encap_limit
= strtoul(str
, &e
, 0);
2746 if (e
== str
|| *e
|| encap_limit
> 255) {
2751 flags6
&= ~IP6_TNL_F_IGN_ENCAP_LIMIT
;
2757 struct in6_addr in6buf
;
2758 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2759 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2763 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(in6buf
), &in6buf
);
2766 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2767 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2771 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(in6buf
), &in6buf
);
2774 if (!(flags6
& IP6_TNL_F_IGN_ENCAP_LIMIT
))
2775 nla_put_u8(nlm
, IFLA_GRE_ENCAP_LIMIT
, encap_limit
);
2778 nla_put_u32(nlm
, IFLA_GRE_FLOWINFO
, flowinfo
);
2781 nla_put_u32(nlm
, IFLA_GRE_FLAGS
, flags6
);
2786 struct in_addr inbuf
;
2789 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2790 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2794 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(inbuf
), &inbuf
);
2797 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2798 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2802 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(inbuf
), &inbuf
);
2804 if (IN_MULTICAST(ntohl(inbuf
.s_addr
))) {
2806 okey
= inbuf
.s_addr
;
2811 ikey
= inbuf
.s_addr
;
2817 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2818 set_df
= blobmsg_get_bool(cur
);
2821 /* ttl != 0 and nopmtudisc are incompatible */
2829 nla_put_u8(nlm
, IFLA_GRE_PMTUDISC
, set_df
? 1 : 0);
2831 nla_put_u8(nlm
, IFLA_GRE_TOS
, tos
);
2835 nla_put_u8(nlm
, IFLA_GRE_TTL
, ttl
);
2838 nla_put_u16(nlm
, IFLA_GRE_OFLAGS
, oflags
);
2841 nla_put_u16(nlm
, IFLA_GRE_IFLAGS
, iflags
);
2844 nla_put_u32(nlm
, IFLA_GRE_OKEY
, htonl(okey
));
2847 nla_put_u32(nlm
, IFLA_GRE_IKEY
, htonl(ikey
));
2849 nla_nest_end(nlm
, infodata
);
2850 nla_nest_end(nlm
, linkinfo
);
2852 return system_rtnl_call(nlm
);
2861 static int system_add_vti_tunnel(const char *name
, const char *kind
,
2862 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2865 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2866 struct blob_attr
*cur
;
2869 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2873 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2874 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2876 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2882 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2883 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2890 nla_put_u32(nlm
, IFLA_VTI_LINK
, link
);
2893 struct in6_addr in6buf
;
2894 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2895 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2899 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(in6buf
), &in6buf
);
2902 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2903 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2907 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(in6buf
), &in6buf
);
2911 struct in_addr inbuf
;
2913 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2914 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2918 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(inbuf
), &inbuf
);
2921 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2922 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2926 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(inbuf
), &inbuf
);
2931 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2932 struct blob_attr
*tb_data
[__VTI_DATA_ATTR_MAX
];
2933 uint32_t ikey
= 0, okey
= 0;
2935 blobmsg_parse(vti_data_attr_list
.params
, __VTI_DATA_ATTR_MAX
, tb_data
,
2936 blobmsg_data(cur
), blobmsg_len(cur
));
2938 if ((cur
= tb_data
[VTI_DATA_IKEY
])) {
2939 if ((ikey
= blobmsg_get_u32(cur
)))
2940 nla_put_u32(nlm
, IFLA_VTI_IKEY
, htonl(ikey
));
2943 if ((cur
= tb_data
[VTI_DATA_OKEY
])) {
2944 if ((okey
= blobmsg_get_u32(cur
)))
2945 nla_put_u32(nlm
, IFLA_VTI_OKEY
, htonl(okey
));
2949 nla_nest_end(nlm
, infodata
);
2950 nla_nest_end(nlm
, linkinfo
);
2952 return system_rtnl_call(nlm
);
2960 #ifdef IFLA_XFRM_MAX
2961 static int system_add_xfrm_tunnel(const char *name
, const char *kind
,
2962 const unsigned int link
, struct blob_attr
**tb
)
2965 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2966 struct blob_attr
*cur
;
2969 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2973 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2974 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2976 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2982 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2983 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2990 nla_put_u32(nlm
, IFLA_XFRM_LINK
, link
);
2992 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2993 struct blob_attr
*tb_data
[__XFRM_DATA_ATTR_MAX
];
2996 blobmsg_parse(xfrm_data_attr_list
.params
, __XFRM_DATA_ATTR_MAX
, tb_data
,
2997 blobmsg_data(cur
), blobmsg_len(cur
));
2999 if ((cur
= tb_data
[XFRM_DATA_IF_ID
])) {
3000 if ((if_id
= blobmsg_get_u32(cur
)))
3001 nla_put_u32(nlm
, IFLA_XFRM_IF_ID
, if_id
);
3006 nla_nest_end(nlm
, infodata
);
3007 nla_nest_end(nlm
, linkinfo
);
3009 return system_rtnl_call(nlm
);
3017 #ifdef IFLA_VXLAN_MAX
3018 static int system_add_vxlan(const char *name
, const unsigned int link
, struct blob_attr
**tb
, bool v6
)
3020 struct blob_attr
*tb_data
[__VXLAN_DATA_ATTR_MAX
];
3022 struct nlattr
*linkinfo
, *data
;
3023 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
3024 struct blob_attr
*cur
;
3027 if ((cur
= tb
[TUNNEL_ATTR_DATA
]))
3028 blobmsg_parse(vxlan_data_attr_list
.params
, __VXLAN_DATA_ATTR_MAX
, tb_data
,
3029 blobmsg_data(cur
), blobmsg_len(cur
));
3033 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
3038 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
3040 nla_put_string(msg
, IFLA_IFNAME
, name
);
3042 if ((cur
= tb_data
[VXLAN_DATA_ATTR_MACADDR
])) {
3043 struct ether_addr
*ea
= ether_aton(blobmsg_get_string(cur
));
3049 nla_put(msg
, IFLA_ADDRESS
, ETH_ALEN
, ea
);
3052 if ((cur
= tb
[TUNNEL_ATTR_MTU
])) {
3053 uint32_t mtu
= blobmsg_get_u32(cur
);
3054 nla_put_u32(msg
, IFLA_MTU
, mtu
);
3057 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
))) {
3062 nla_put_string(msg
, IFLA_INFO_KIND
, "vxlan");
3064 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
))) {
3070 nla_put_u32(msg
, IFLA_VXLAN_LINK
, link
);
3072 if ((cur
= tb_data
[VXLAN_DATA_ATTR_ID
])) {
3073 uint32_t id
= blobmsg_get_u32(cur
);
3074 if (id
>= (1u << 24) - 1) {
3079 nla_put_u32(msg
, IFLA_VXLAN_ID
, id
);
3083 struct in6_addr in6buf
;
3084 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
3085 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
3089 nla_put(msg
, IFLA_VXLAN_LOCAL6
, sizeof(in6buf
), &in6buf
);
3092 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
3093 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
3097 nla_put(msg
, IFLA_VXLAN_GROUP6
, sizeof(in6buf
), &in6buf
);
3100 struct in_addr inbuf
;
3102 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
3103 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
3107 nla_put(msg
, IFLA_VXLAN_LOCAL
, sizeof(inbuf
), &inbuf
);
3110 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
3111 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
3115 nla_put(msg
, IFLA_VXLAN_GROUP
, sizeof(inbuf
), &inbuf
);
3119 uint32_t port
= 4789;
3120 if ((cur
= tb_data
[VXLAN_DATA_ATTR_PORT
])) {
3121 port
= blobmsg_get_u32(cur
);
3122 if (port
< 1 || port
> 65535) {
3127 nla_put_u16(msg
, IFLA_VXLAN_PORT
, htons(port
));
3129 if ((cur
= tb_data
[VXLAN_DATA_ATTR_RXCSUM
])) {
3130 bool rxcsum
= blobmsg_get_bool(cur
);
3131 nla_put_u8(msg
, IFLA_VXLAN_UDP_ZERO_CSUM6_RX
, !rxcsum
);
3134 if ((cur
= tb_data
[VXLAN_DATA_ATTR_TXCSUM
])) {
3135 bool txcsum
= blobmsg_get_bool(cur
);
3136 nla_put_u8(msg
, IFLA_VXLAN_UDP_CSUM
, txcsum
);
3137 nla_put_u8(msg
, IFLA_VXLAN_UDP_ZERO_CSUM6_TX
, !txcsum
);
3140 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
3141 char *str
= blobmsg_get_string(cur
);
3144 if (strcmp(str
, "inherit")) {
3145 if (!system_tos_aton(str
, &tos
)) {
3151 nla_put_u8(msg
, IFLA_VXLAN_TOS
, tos
);
3154 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
3155 uint32_t ttl
= blobmsg_get_u32(cur
);
3156 if (ttl
< 1 || ttl
> 255) {
3161 nla_put_u8(msg
, IFLA_VXLAN_TTL
, ttl
);
3164 nla_nest_end(msg
, data
);
3165 nla_nest_end(msg
, linkinfo
);
3167 ret
= system_rtnl_call(msg
);
3169 D(SYSTEM
, "Error adding vxlan '%s': %d\n", name
, ret
);
3179 static int system_add_sit_tunnel(const char *name
, const unsigned int link
, struct blob_attr
**tb
)
3181 struct blob_attr
*cur
;
3184 if (system_add_proto_tunnel(name
, IPPROTO_IPV6
, link
, tb
) < 0)
3188 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
3189 struct blob_attr
*tb_data
[__SIXRD_DATA_ATTR_MAX
];
3191 struct ip_tunnel_6rd p6
;
3193 blobmsg_parse(sixrd_data_attr_list
.params
, __SIXRD_DATA_ATTR_MAX
, tb_data
,
3194 blobmsg_data(cur
), blobmsg_len(cur
));
3196 memset(&p6
, 0, sizeof(p6
));
3198 if ((cur
= tb_data
[SIXRD_DATA_PREFIX
])) {
3199 if (!parse_ip_and_netmask(AF_INET6
, blobmsg_data(cur
),
3200 &p6
.prefix
, &mask
) || mask
> 128) {
3205 p6
.prefixlen
= mask
;
3208 if ((cur
= tb_data
[SIXRD_DATA_RELAY_PREFIX
])) {
3209 if (!parse_ip_and_netmask(AF_INET
, blobmsg_data(cur
),
3210 &p6
.relay_prefix
, &mask
) || mask
> 32) {
3215 p6
.relay_prefixlen
= mask
;
3218 if (tunnel_ioctl(name
, SIOCADD6RD
, &p6
) < 0) {
3228 __system_del_ip_tunnel(name
, tb
);
3232 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
, const unsigned int link
, struct blob_attr
**tb
)
3234 struct blob_attr
*cur
;
3236 struct ip_tunnel_parm p
= {
3245 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
]) &&
3246 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.saddr
) < 1)
3249 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
]) &&
3250 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.daddr
) < 1)
3253 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
3254 set_df
= blobmsg_get_bool(cur
);
3256 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
3257 p
.iph
.ttl
= blobmsg_get_u32(cur
);
3259 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
3260 char *str
= blobmsg_get_string(cur
);
3261 if (strcmp(str
, "inherit")) {
3264 if (!system_tos_aton(str
, &uval
))
3272 p
.iph
.frag_off
= set_df
? htons(IP_DF
) : 0;
3273 /* ttl !=0 and nopmtudisc are incompatible */
3274 if (p
.iph
.ttl
&& p
.iph
.frag_off
== 0)
3277 strncpy(p
.name
, name
, sizeof(p
.name
) - 1);
3279 switch (p
.iph
.protocol
) {
3281 return tunnel_ioctl("tunl0", SIOCADDTUNNEL
, &p
);
3283 return tunnel_ioctl("sit0", SIOCADDTUNNEL
, &p
);
3290 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
)
3292 struct blob_attr
*cur
;
3295 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
3297 str
= blobmsg_data(cur
);
3299 if (!strcmp(str
, "greip") || !strcmp(str
, "gretapip") ||
3300 !strcmp(str
, "greip6") || !strcmp(str
, "gretapip6") ||
3301 !strcmp(str
, "vtiip") || !strcmp(str
, "vtiip6") ||
3302 !strcmp(str
, "vxlan") || !strcmp(str
, "vxlan6") ||
3303 !strcmp(str
, "xfrm"))
3304 return system_link_del(name
);
3306 return tunnel_ioctl(name
, SIOCDELTUNNEL
, NULL
);
3309 int system_del_ip_tunnel(const char *name
, struct blob_attr
*attr
)
3311 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
3313 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
3314 blob_data(attr
), blob_len(attr
));
3316 return __system_del_ip_tunnel(name
, tb
);
3319 int system_update_ipv6_mtu(struct device
*dev
, int mtu
)
3325 snprintf(buf
, sizeof(buf
), "/proc/sys/net/ipv6/conf/%s/mtu",
3328 fd
= open(buf
, O_RDWR
);
3333 ssize_t len
= read(fd
, buf
, sizeof(buf
) - 1);
3340 if (write(fd
, buf
, snprintf(buf
, sizeof(buf
), "%i", mtu
)) > 0)
3349 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
3351 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
3352 struct blob_attr
*cur
;
3355 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
3356 blob_data(attr
), blob_len(attr
));
3358 __system_del_ip_tunnel(name
, tb
);
3360 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
3362 str
= blobmsg_data(cur
);
3364 unsigned int ttl
= 0;
3365 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
3366 ttl
= blobmsg_get_u32(cur
);
3371 unsigned int link
= 0;
3372 if ((cur
= tb
[TUNNEL_ATTR_LINK
])) {
3373 struct interface
*iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
3377 if (iface
->l3_dev
.dev
)
3378 link
= iface
->l3_dev
.dev
->ifindex
;
3381 if (!strcmp(str
, "sit"))
3382 return system_add_sit_tunnel(name
, link
, tb
);
3383 #ifdef IFLA_IPTUN_MAX
3384 else if (!strcmp(str
, "ipip6")) {
3385 return system_add_ip6_tunnel(name
, link
, tb
);
3386 } else if (!strcmp(str
, "greip")) {
3387 return system_add_gre_tunnel(name
, "gre", link
, tb
, false);
3388 } else if (!strcmp(str
, "gretapip")) {
3389 return system_add_gre_tunnel(name
, "gretap", link
, tb
, false);
3390 } else if (!strcmp(str
, "greip6")) {
3391 return system_add_gre_tunnel(name
, "ip6gre", link
, tb
, true);
3392 } else if (!strcmp(str
, "gretapip6")) {
3393 return system_add_gre_tunnel(name
, "ip6gretap", link
, tb
, true);
3395 } else if (!strcmp(str
, "vtiip")) {
3396 return system_add_vti_tunnel(name
, "vti", link
, tb
, false);
3397 } else if (!strcmp(str
, "vtiip6")) {
3398 return system_add_vti_tunnel(name
, "vti6", link
, tb
, true);
3400 #ifdef IFLA_XFRM_MAX
3401 } else if (!strcmp(str
, "xfrm")) {
3402 return system_add_xfrm_tunnel(name
, "xfrm", link
, tb
);
3404 #ifdef IFLA_VXLAN_MAX
3405 } else if(!strcmp(str
, "vxlan")) {
3406 return system_add_vxlan(name
, link
, tb
, false);
3407 } else if(!strcmp(str
, "vxlan6")) {
3408 return system_add_vxlan(name
, link
, tb
, true);
3411 } else if (!strcmp(str
, "ipip")) {
3412 return system_add_proto_tunnel(name
, IPPROTO_IPIP
, link
, tb
);