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
)) {
143 nl_socket_free(sock
);
151 create_raw_event_socket(struct event_socket
*ev
, int protocol
, int groups
,
152 uloop_fd_handler cb
, int flags
)
154 ev
->sock
= create_socket(protocol
, groups
);
158 ev
->uloop
.fd
= nl_socket_get_fd(ev
->sock
);
160 if (uloop_fd_add(&ev
->uloop
, ULOOP_READ
|flags
))
167 create_event_socket(struct event_socket
*ev
, int protocol
,
168 int (*cb
)(struct nl_msg
*msg
, void *arg
))
170 if (!create_raw_event_socket(ev
, protocol
, 0, handler_nl_event
, ULOOP_ERROR_CB
))
173 /* Install the valid custom callback handler */
174 nl_socket_modify_cb(ev
->sock
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, NULL
);
176 /* Disable sequence number checking on event sockets */
177 nl_socket_disable_seq_check(ev
->sock
);
179 /* Increase rx buffer size to 65K on event sockets */
181 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
188 create_hotplug_event_socket(struct event_socket
*ev
, int protocol
,
189 void (*cb
)(struct uloop_fd
*u
, unsigned int events
))
191 if (!create_raw_event_socket(ev
, protocol
, 1, cb
, ULOOP_ERROR_CB
))
194 /* Increase rx buffer size to 65K on event sockets */
196 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
203 system_rtn_aton(const char *src
, unsigned int *dst
)
208 if (!strcmp(src
, "local"))
210 else if (!strcmp(src
, "nat"))
212 else if (!strcmp(src
, "broadcast"))
214 else if (!strcmp(src
, "anycast"))
216 else if (!strcmp(src
, "multicast"))
218 else if (!strcmp(src
, "prohibit"))
220 else if (!strcmp(src
, "unreachable"))
222 else if (!strcmp(src
, "blackhole"))
224 else if (!strcmp(src
, "xresolve"))
226 else if (!strcmp(src
, "unicast"))
228 else if (!strcmp(src
, "throw"))
230 else if (!strcmp(src
, "failed_policy"))
231 n
= RTN_FAILED_POLICY
;
233 n
= strtoul(src
, &e
, 0);
234 if (!e
|| *e
|| e
== src
|| n
> 255)
243 system_tos_aton(const char *src
, unsigned *dst
)
247 *dst
= strtoul(src
, &e
, 16);
248 if (e
== src
|| *e
|| *dst
> 255)
254 int system_init(void)
256 static struct event_socket rtnl_event
;
257 static struct event_socket hotplug_event
;
259 sock_ioctl
= socket(AF_LOCAL
, SOCK_DGRAM
, 0);
260 system_fd_set_cloexec(sock_ioctl
);
262 /* Prepare socket for routing / address control */
263 sock_rtnl
= create_socket(NETLINK_ROUTE
, 0);
267 if (!create_event_socket(&rtnl_event
, NETLINK_ROUTE
, cb_rtnl_event
))
270 if (!create_hotplug_event_socket(&hotplug_event
, NETLINK_KOBJECT_UEVENT
,
271 handle_hotplug_event
))
274 /* Receive network link events form kernel */
275 nl_socket_add_membership(rtnl_event
.sock
, RTNLGRP_LINK
);
280 static void system_set_sysctl(const char *path
, const char *val
)
284 fd
= open(path
, O_WRONLY
);
288 if (write(fd
, val
, strlen(val
))) {}
292 static void system_set_dev_sysctl(const char *path
, const char *device
, const char *val
)
294 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
295 system_set_sysctl(dev_buf
, val
);
298 static void system_set_disable_ipv6(struct device
*dev
, const char *val
)
300 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev
->ifname
, val
);
303 static void system_set_rpfilter(struct device
*dev
, const char *val
)
305 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter", dev
->ifname
, val
);
308 static void system_set_acceptlocal(struct device
*dev
, const char *val
)
310 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local", dev
->ifname
, val
);
313 static void system_set_igmpversion(struct device
*dev
, const char *val
)
315 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version", dev
->ifname
, val
);
318 static void system_set_mldversion(struct device
*dev
, const char *val
)
320 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version", dev
->ifname
, val
);
323 static void system_set_neigh4reachabletime(struct device
*dev
, const char *val
)
325 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
328 static void system_set_neigh6reachabletime(struct device
*dev
, const char *val
)
330 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
333 static void system_set_neigh4gcstaletime(struct device
*dev
, const char *val
)
335 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time", dev
->ifname
, val
);
338 static void system_set_neigh6gcstaletime(struct device
*dev
, const char *val
)
340 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time", dev
->ifname
, val
);
343 static void system_set_neigh4locktime(struct device
*dev
, const char *val
)
345 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime", dev
->ifname
, val
);
348 static void system_set_dadtransmits(struct device
*dev
, const char *val
)
350 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits", dev
->ifname
, val
);
353 static void system_bridge_set_multicast_to_unicast(struct device
*dev
, const char *val
)
355 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_to_unicast", dev
->ifname
, val
);
358 static void system_bridge_set_multicast_fast_leave(struct device
*dev
, const char *val
)
360 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_fast_leave", dev
->ifname
, val
);
363 static void system_bridge_set_hairpin_mode(struct device
*dev
, const char *val
)
365 system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev
->ifname
, val
);
368 static void system_bridge_set_isolated(struct device
*dev
, const char *val
)
370 system_set_dev_sysctl("/sys/class/net/%s/brport/isolated", dev
->ifname
, val
);
373 static void system_bridge_set_multicast_router(struct device
*dev
, const char *val
, bool bridge
)
375 system_set_dev_sysctl(bridge
? "/sys/class/net/%s/bridge/multicast_router" :
376 "/sys/class/net/%s/brport/multicast_router",
380 static void system_bridge_set_robustness(struct device
*dev
, const char *val
)
382 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_count",
384 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_count",
388 static void system_bridge_set_query_interval(struct device
*dev
, const char *val
)
390 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_interval",
394 static void system_bridge_set_query_response_interval(struct device
*dev
, const char *val
)
396 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_response_interval",
400 static void system_bridge_set_last_member_interval(struct device
*dev
, const char *val
)
402 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_interval",
406 static void system_bridge_set_membership_interval(struct device
*dev
, const char *val
)
408 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_membership_interval",
412 static void system_bridge_set_other_querier_timeout(struct device
*dev
, const char *val
)
414 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier_interval",
418 static void system_bridge_set_startup_query_interval(struct device
*dev
, const char *val
)
420 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_interval",
424 static void system_bridge_set_stp_state(struct device
*dev
, const char *val
)
426 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/stp_state", dev
->ifname
, val
);
429 static void system_bridge_set_forward_delay(struct device
*dev
, const char *val
)
431 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/forward_delay", dev
->ifname
, val
);
434 static void system_bridge_set_priority(struct device
*dev
, const char *val
)
436 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/priority", dev
->ifname
, val
);
439 static void system_bridge_set_ageing_time(struct device
*dev
, const char *val
)
441 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/ageing_time", dev
->ifname
, val
);
444 static void system_bridge_set_hello_time(struct device
*dev
, const char *val
)
446 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hello_time", dev
->ifname
, val
);
449 static void system_bridge_set_max_age(struct device
*dev
, const char *val
)
451 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/max_age", dev
->ifname
, val
);
454 static void system_bridge_set_learning(struct device
*dev
, const char *val
)
456 system_set_dev_sysctl("/sys/class/net/%s/brport/learning", dev
->ifname
, val
);
459 static void system_bridge_set_unicast_flood(struct device
*dev
, const char *val
)
461 system_set_dev_sysctl("/sys/class/net/%s/brport/unicast_flood", dev
->ifname
, val
);
464 static void system_set_sendredirects(struct device
*dev
, const char *val
)
466 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects", dev
->ifname
, val
);
469 static int system_get_sysctl(const char *path
, char *buf
, const size_t buf_sz
)
471 int fd
= -1, ret
= -1;
473 fd
= open(path
, O_RDONLY
);
477 ssize_t len
= read(fd
, buf
, buf_sz
- 1);
491 system_get_dev_sysctl(const char *path
, const char *device
, char *buf
, const size_t buf_sz
)
493 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
494 return system_get_sysctl(dev_buf
, buf
, buf_sz
);
497 static int system_get_disable_ipv6(struct device
*dev
, char *buf
, const size_t buf_sz
)
499 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
500 dev
->ifname
, buf
, buf_sz
);
503 static int system_get_rpfilter(struct device
*dev
, char *buf
, const size_t buf_sz
)
505 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
506 dev
->ifname
, buf
, buf_sz
);
509 static int system_get_acceptlocal(struct device
*dev
, char *buf
, const size_t buf_sz
)
511 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
512 dev
->ifname
, buf
, buf_sz
);
515 static int system_get_igmpversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
517 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
518 dev
->ifname
, buf
, buf_sz
);
521 static int system_get_mldversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
523 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
524 dev
->ifname
, buf
, buf_sz
);
527 static int system_get_neigh4reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
529 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
530 dev
->ifname
, buf
, buf_sz
);
533 static int system_get_neigh6reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
535 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
536 dev
->ifname
, buf
, buf_sz
);
539 static int system_get_neigh4gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
541 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time",
542 dev
->ifname
, buf
, buf_sz
);
545 static int system_get_neigh6gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
547 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time",
548 dev
->ifname
, buf
, buf_sz
);
551 static int system_get_neigh4locktime(struct device
*dev
, char *buf
, const size_t buf_sz
)
553 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime",
554 dev
->ifname
, buf
, buf_sz
);
557 static int system_get_dadtransmits(struct device
*dev
, char *buf
, const size_t buf_sz
)
559 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
560 dev
->ifname
, buf
, buf_sz
);
563 static int system_get_sendredirects(struct device
*dev
, char *buf
, const size_t buf_sz
)
565 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects",
566 dev
->ifname
, buf
, buf_sz
);
569 /* Evaluate netlink messages */
570 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
572 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
573 struct nlattr
*nla
[__IFLA_MAX
];
577 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
580 nlmsg_parse(nh
, sizeof(struct ifinfomsg
), nla
, __IFLA_MAX
- 1, NULL
);
581 if (!nla
[IFLA_IFNAME
])
584 struct device
*dev
= device_find(nla_data(nla
[IFLA_IFNAME
]));
588 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev
->ifname
, buf
, sizeof(buf
)))
589 link_state
= strtoul(buf
, NULL
, 0);
591 device_set_link(dev
, link_state
? true : false);
598 handle_hotplug_msg(char *data
, int size
)
600 const char *subsystem
= NULL
, *interface
= NULL
, *interface_old
= NULL
;
601 char *cur
, *end
, *sep
;
604 bool add
, move
= false;
606 if (!strncmp(data
, "add@", 4))
608 else if (!strncmp(data
, "remove@", 7))
610 else if (!strncmp(data
, "move@", 5)) {
617 skip
= strlen(data
) + 1;
620 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
621 skip
= strlen(cur
) + 1;
623 sep
= strchr(cur
, '=');
628 if (!strcmp(cur
, "INTERFACE"))
630 else if (!strcmp(cur
, "SUBSYSTEM")) {
632 if (strcmp(subsystem
, "net") != 0)
634 } else if (!strcmp(cur
, "DEVPATH_OLD")) {
635 interface_old
= strrchr(sep
+ 1, '/');
641 if (subsystem
&& interface
) {
642 if (move
&& interface_old
)
651 dev
= device_find(interface_old
);
655 if (dev
->type
!= &simple_device_type
)
658 device_set_present(dev
, false);
661 dev
= device_find(interface
);
665 if (dev
->type
!= &simple_device_type
)
668 if (add
&& system_if_force_external(dev
->ifname
))
671 device_set_present(dev
, add
);
675 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
677 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
678 struct sockaddr_nl nla
;
679 unsigned char *buf
= NULL
;
682 socklen_t errlen
= sizeof(err
);
685 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
687 handle_hotplug_msg((char *) buf
, size
);
694 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
699 /* Increase rx buffer size on netlink socket */
701 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
712 uloop_fd_delete(&ev
->uloop
);
716 static int system_rtnl_call(struct nl_msg
*msg
)
720 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
726 return nl_wait_for_ack(sock_rtnl
);
729 int system_bridge_delbr(struct device
*bridge
)
731 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
734 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
738 memset(&ifr
, 0, sizeof(ifr
));
740 ifr
.ifr_ifindex
= dev
->ifindex
;
743 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
) - 1);
744 return ioctl(sock_ioctl
, cmd
, &ifr
);
747 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
751 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
752 if (stat(buf
, &st
) < 0)
758 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
764 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
765 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
769 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
777 path
= strrchr(buf
, '/');
785 system_bridge_set_wireless(struct device
*bridge
, struct device
*dev
)
787 bool mcast_to_ucast
= dev
->wireless_ap
;
790 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_TO_UNICAST
&&
791 !bridge
->settings
.multicast_to_unicast
)
792 mcast_to_ucast
= false;
794 if (!mcast_to_ucast
|| dev
->wireless_isolate
)
797 system_bridge_set_multicast_to_unicast(dev
, mcast_to_ucast
? "1" : "0");
798 system_bridge_set_hairpin_mode(dev
, hairpin
? "1" : "0");
801 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
807 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
808 if (!oldbr
|| strcmp(oldbr
, bridge
->ifname
) != 0)
809 ret
= system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
812 system_bridge_set_wireless(bridge
, dev
);
814 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
815 snprintf(buf
, sizeof(buf
), "%u", dev
->settings
.multicast_router
);
816 system_bridge_set_multicast_router(dev
, buf
, false);
819 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_FAST_LEAVE
&&
820 dev
->settings
.multicast_fast_leave
)
821 system_bridge_set_multicast_fast_leave(dev
, "1");
823 if (dev
->settings
.flags
& DEV_OPT_LEARNING
&&
824 !dev
->settings
.learning
)
825 system_bridge_set_learning(dev
, "0");
827 if (dev
->settings
.flags
& DEV_OPT_UNICAST_FLOOD
&&
828 !dev
->settings
.unicast_flood
)
829 system_bridge_set_unicast_flood(dev
, "0");
831 if (dev
->settings
.flags
& DEV_OPT_ISOLATE
&&
832 dev
->settings
.isolate
)
833 system_bridge_set_isolated(dev
, "1");
838 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
840 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
843 int system_if_resolve(struct device
*dev
)
846 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
847 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
848 return ifr
.ifr_ifindex
;
853 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
857 memset(&ifr
, 0, sizeof(ifr
));
858 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
) - 1);
859 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) < 0)
862 ifr
.ifr_flags
|= add
;
863 ifr
.ifr_flags
&= ~rem
;
864 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
876 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
878 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
880 return ifa
->ifa_index
== ifindex
;
883 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
885 struct rtmsg
*r
= NLMSG_DATA(hdr
);
886 struct nlattr
*tb
[__RTA_MAX
];
888 if (r
->rtm_protocol
== RTPROT_KERNEL
&&
889 r
->rtm_family
== AF_INET6
)
892 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
896 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
899 static bool check_rule(struct nlmsghdr
*hdr
, int ifindex
)
904 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
906 struct clear_data
*clr
= arg
;
907 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
908 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
914 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
921 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
928 if (hdr
->nlmsg_type
!= RTM_NEWRULE
)
937 if (!cb(hdr
, clr
->dev
? clr
->dev
->ifindex
: 0))
940 if (type
== RTM_DELRULE
)
941 D(SYSTEM
, "Remove a rule\n");
943 D(SYSTEM
, "Remove %s from device %s\n",
944 type
== RTM_DELADDR
? "an address" : "a route",
947 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
948 hdr
= nlmsg_hdr(clr
->msg
);
949 hdr
->nlmsg_type
= type
;
950 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
952 nl_socket_disable_auto_ack(sock_rtnl
);
953 ret
= nl_send_auto_complete(sock_rtnl
, clr
->msg
);
955 if (type
== RTM_DELRULE
)
956 D(SYSTEM
, "Error deleting a rule: %d\n", ret
);
958 D(SYSTEM
, "Error deleting %s from device '%s': %d\n",
959 type
== RTM_DELADDR
? "an address" : "a route",
960 clr
->dev
->ifname
, ret
);
963 nl_socket_enable_auto_ack(sock_rtnl
);
969 cb_finish_event(struct nl_msg
*msg
, void *arg
)
977 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
980 *pending
= err
->error
;
985 system_if_clear_entries(struct device
*dev
, int type
, int af
)
987 struct clear_data clr
;
991 .rtm_flags
= RTM_F_CLONED
,
993 int flags
= NLM_F_DUMP
;
1002 clr
.size
= sizeof(struct rtgenmsg
);
1005 clr
.size
= sizeof(struct rtmsg
);
1011 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1015 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
1019 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
1020 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
1021 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
1022 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
1024 if (nl_send_auto_complete(sock_rtnl
, clr
.msg
) < 0)
1028 nl_recvmsgs(sock_rtnl
, cb
);
1031 nlmsg_free(clr
.msg
);
1037 * Clear bridge (membership) state and bring down device
1039 void system_if_clear_state(struct device
*dev
)
1041 static char buf
[256];
1043 device_set_ifindex(dev
, system_if_resolve(dev
));
1045 if (dev
->external
|| !dev
->ifindex
)
1048 system_if_flags(dev
->ifname
, 0, IFF_UP
);
1050 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
1051 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
1052 system_bridge_delbr(dev
);
1056 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
1058 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
1059 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
1062 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
1063 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
1064 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
1065 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
1066 system_if_clear_entries(dev
, RTM_GETNEIGH
, AF_INET
);
1067 system_if_clear_entries(dev
, RTM_GETNEIGH
, AF_INET6
);
1068 system_set_disable_ipv6(dev
, "0");
1071 static inline unsigned long
1072 sec_to_jiffies(int val
)
1074 return (unsigned long) val
* 100;
1077 static void system_bridge_conf_multicast_deps(struct device
*bridge
,
1078 struct bridge_config
*cfg
,
1084 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
||
1085 cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
||
1086 cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
1087 val
= cfg
->robustness
* cfg
->query_interval
+
1088 cfg
->query_response_interval
;
1090 snprintf(buf
, buf_len
, "%i", val
);
1091 system_bridge_set_membership_interval(bridge
, buf
);
1093 val
= cfg
->robustness
* cfg
->query_interval
+
1094 cfg
->query_response_interval
/ 2;
1096 snprintf(buf
, buf_len
, "%i", val
);
1097 system_bridge_set_other_querier_timeout(bridge
, buf
);
1100 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
1101 val
= cfg
->query_interval
/ 4;
1103 snprintf(buf
, buf_len
, "%i", val
);
1104 system_bridge_set_startup_query_interval(bridge
, buf
);
1108 static void system_bridge_conf_multicast(struct device
*bridge
,
1109 struct bridge_config
*cfg
,
1113 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
1114 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
1116 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
1117 bridge
->ifname
, cfg
->multicast_querier
? "1" : "0");
1119 snprintf(buf
, buf_len
, "%i", cfg
->hash_max
);
1120 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
1121 bridge
->ifname
, buf
);
1123 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
1124 snprintf(buf
, buf_len
, "%u", bridge
->settings
.multicast_router
);
1125 system_bridge_set_multicast_router(bridge
, buf
, true);
1128 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
) {
1129 snprintf(buf
, buf_len
, "%i", cfg
->robustness
);
1130 system_bridge_set_robustness(bridge
, buf
);
1133 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
1134 snprintf(buf
, buf_len
, "%i", cfg
->query_interval
);
1135 system_bridge_set_query_interval(bridge
, buf
);
1138 if (cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
1139 snprintf(buf
, buf_len
, "%i", cfg
->query_response_interval
);
1140 system_bridge_set_query_response_interval(bridge
, buf
);
1143 if (cfg
->flags
& BRIDGE_OPT_LAST_MEMBER_INTERVAL
) {
1144 snprintf(buf
, buf_len
, "%i", cfg
->last_member_interval
);
1145 system_bridge_set_last_member_interval(bridge
, buf
);
1148 system_bridge_conf_multicast_deps(bridge
, cfg
, buf
, buf_len
);
1151 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
1155 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
1158 system_bridge_set_stp_state(bridge
, cfg
->stp
? "1" : "0");
1160 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->forward_delay
));
1161 system_bridge_set_forward_delay(bridge
, buf
);
1163 system_bridge_conf_multicast(bridge
, cfg
, buf
, sizeof(buf
));
1165 snprintf(buf
, sizeof(buf
), "%d", cfg
->priority
);
1166 system_bridge_set_priority(bridge
, buf
);
1168 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
1169 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->ageing_time
));
1170 system_bridge_set_ageing_time(bridge
, buf
);
1173 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
1174 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->hello_time
));
1175 system_bridge_set_hello_time(bridge
, buf
);
1178 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
1179 snprintf(buf
, sizeof(buf
), "%lu", sec_to_jiffies(cfg
->max_age
));
1180 system_bridge_set_max_age(bridge
, buf
);
1186 int system_macvlan_add(struct device
*macvlan
, struct device
*dev
, struct macvlan_config
*cfg
)
1189 struct nlattr
*linkinfo
, *data
;
1190 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
1192 static const struct {
1194 enum macvlan_mode val
;
1196 { "private", MACVLAN_MODE_PRIVATE
},
1197 { "vepa", MACVLAN_MODE_VEPA
},
1198 { "bridge", MACVLAN_MODE_BRIDGE
},
1199 { "passthru", MACVLAN_MODE_PASSTHRU
},
1202 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1207 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1209 if (cfg
->flags
& MACVLAN_OPT_MACADDR
)
1210 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1211 nla_put_string(msg
, IFLA_IFNAME
, macvlan
->ifname
);
1212 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1214 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1215 goto nla_put_failure
;
1217 nla_put_string(msg
, IFLA_INFO_KIND
, "macvlan");
1219 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1220 goto nla_put_failure
;
1223 for (i
= 0; i
< ARRAY_SIZE(modes
); i
++) {
1224 if (strcmp(cfg
->mode
, modes
[i
].name
) != 0)
1227 nla_put_u32(msg
, IFLA_MACVLAN_MODE
, modes
[i
].val
);
1232 nla_nest_end(msg
, data
);
1233 nla_nest_end(msg
, linkinfo
);
1235 rv
= system_rtnl_call(msg
);
1237 D(SYSTEM
, "Error adding macvlan '%s' over '%s': %d\n", macvlan
->ifname
, dev
->ifname
, rv
);
1246 static int system_link_del(const char *ifname
)
1249 struct ifinfomsg iim
= {
1250 .ifi_family
= AF_UNSPEC
,
1254 msg
= nlmsg_alloc_simple(RTM_DELLINK
, NLM_F_REQUEST
);
1259 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1260 nla_put_string(msg
, IFLA_IFNAME
, ifname
);
1261 return system_rtnl_call(msg
);
1264 int system_macvlan_del(struct device
*macvlan
)
1266 return system_link_del(macvlan
->ifname
);
1269 int system_veth_add(struct device
*veth
, struct veth_config
*cfg
)
1272 struct ifinfomsg empty_iim
= {};
1273 struct nlattr
*linkinfo
, *data
, *veth_info
;
1276 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1281 nlmsg_append(msg
, &empty_iim
, sizeof(empty_iim
), 0);
1283 if (cfg
->flags
& VETH_OPT_MACADDR
)
1284 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1285 nla_put_string(msg
, IFLA_IFNAME
, veth
->ifname
);
1287 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1288 goto nla_put_failure
;
1290 nla_put_string(msg
, IFLA_INFO_KIND
, "veth");
1292 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1293 goto nla_put_failure
;
1295 if (!(veth_info
= nla_nest_start(msg
, VETH_INFO_PEER
)))
1296 goto nla_put_failure
;
1298 nlmsg_append(msg
, &empty_iim
, sizeof(empty_iim
), 0);
1300 if (cfg
->flags
& VETH_OPT_PEER_NAME
)
1301 nla_put_string(msg
, IFLA_IFNAME
, cfg
->peer_name
);
1302 if (cfg
->flags
& VETH_OPT_PEER_MACADDR
)
1303 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->peer_macaddr
), cfg
->peer_macaddr
);
1305 nla_nest_end(msg
, veth_info
);
1306 nla_nest_end(msg
, data
);
1307 nla_nest_end(msg
, linkinfo
);
1309 rv
= system_rtnl_call(msg
);
1311 if (cfg
->flags
& VETH_OPT_PEER_NAME
)
1312 D(SYSTEM
, "Error adding veth '%s' with peer '%s': %d\n", veth
->ifname
, cfg
->peer_name
, rv
);
1314 D(SYSTEM
, "Error adding veth '%s': %d\n", veth
->ifname
, rv
);
1324 int system_veth_del(struct device
*veth
)
1326 return system_link_del(veth
->ifname
);
1329 static int system_vlan(struct device
*dev
, int id
)
1331 struct vlan_ioctl_args ifr
= {
1332 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
1333 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
1336 if (ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
) < 0)
1340 ifr
.cmd
= DEL_VLAN_CMD
;
1343 ifr
.cmd
= ADD_VLAN_CMD
;
1346 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
1347 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1350 int system_vlan_add(struct device
*dev
, int id
)
1352 return system_vlan(dev
, id
);
1355 int system_vlan_del(struct device
*dev
)
1357 return system_vlan(dev
, -1);
1360 int system_vlandev_add(struct device
*vlandev
, struct device
*dev
, struct vlandev_config
*cfg
)
1363 struct nlattr
*linkinfo
, *data
;
1364 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
};
1367 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1372 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1373 nla_put_string(msg
, IFLA_IFNAME
, vlandev
->ifname
);
1374 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1376 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1377 goto nla_put_failure
;
1379 nla_put_string(msg
, IFLA_INFO_KIND
, "vlan");
1381 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1382 goto nla_put_failure
;
1384 nla_put_u16(msg
, IFLA_VLAN_ID
, cfg
->vid
);
1386 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1387 nla_put_u16(msg
, IFLA_VLAN_PROTOCOL
, htons(cfg
->proto
));
1389 if(cfg
->proto
== VLAN_PROTO_8021AD
)
1390 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
);
1393 nla_nest_end(msg
, data
);
1394 nla_nest_end(msg
, linkinfo
);
1396 rv
= system_rtnl_call(msg
);
1398 D(SYSTEM
, "Error adding vlandev '%s' over '%s': %d\n", vlandev
->ifname
, dev
->ifname
, rv
);
1407 int system_vlandev_del(struct device
*vlandev
)
1409 return system_link_del(vlandev
->ifname
);
1413 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
1418 memset(&ifr
, 0, sizeof(ifr
));
1419 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1421 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
1422 s
->mtu
= ifr
.ifr_mtu
;
1423 s
->flags
|= DEV_OPT_MTU
;
1426 s
->mtu6
= system_update_ipv6_mtu(dev
, 0);
1428 s
->flags
|= DEV_OPT_MTU6
;
1430 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
1431 s
->txqueuelen
= ifr
.ifr_qlen
;
1432 s
->flags
|= DEV_OPT_TXQUEUELEN
;
1435 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
1436 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
1437 s
->flags
|= DEV_OPT_MACADDR
;
1440 if (!system_get_disable_ipv6(dev
, buf
, sizeof(buf
))) {
1441 s
->ipv6
= !strtoul(buf
, NULL
, 0);
1442 s
->flags
|= DEV_OPT_IPV6
;
1445 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) == 0) {
1446 s
->promisc
= ifr
.ifr_flags
& IFF_PROMISC
;
1447 s
->flags
|= DEV_OPT_PROMISC
;
1449 s
->multicast
= ifr
.ifr_flags
& IFF_MULTICAST
;
1450 s
->flags
|= DEV_OPT_MULTICAST
;
1453 if (!system_get_rpfilter(dev
, buf
, sizeof(buf
))) {
1454 s
->rpfilter
= strtoul(buf
, NULL
, 0);
1455 s
->flags
|= DEV_OPT_RPFILTER
;
1458 if (!system_get_acceptlocal(dev
, buf
, sizeof(buf
))) {
1459 s
->acceptlocal
= strtoul(buf
, NULL
, 0);
1460 s
->flags
|= DEV_OPT_ACCEPTLOCAL
;
1463 if (!system_get_igmpversion(dev
, buf
, sizeof(buf
))) {
1464 s
->igmpversion
= strtoul(buf
, NULL
, 0);
1465 s
->flags
|= DEV_OPT_IGMPVERSION
;
1468 if (!system_get_mldversion(dev
, buf
, sizeof(buf
))) {
1469 s
->mldversion
= strtoul(buf
, NULL
, 0);
1470 s
->flags
|= DEV_OPT_MLDVERSION
;
1473 if (!system_get_neigh4reachabletime(dev
, buf
, sizeof(buf
))) {
1474 s
->neigh4reachabletime
= strtoul(buf
, NULL
, 0);
1475 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1478 if (!system_get_neigh6reachabletime(dev
, buf
, sizeof(buf
))) {
1479 s
->neigh6reachabletime
= strtoul(buf
, NULL
, 0);
1480 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1483 if (!system_get_neigh4locktime(dev
, buf
, sizeof(buf
))) {
1484 s
->neigh4locktime
= strtol(buf
, NULL
, 0);
1485 s
->flags
|= DEV_OPT_NEIGHLOCKTIME
;
1488 if (!system_get_neigh4gcstaletime(dev
, buf
, sizeof(buf
))) {
1489 s
->neigh4gcstaletime
= strtoul(buf
, NULL
, 0);
1490 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1493 if (!system_get_neigh6gcstaletime(dev
, buf
, sizeof(buf
))) {
1494 s
->neigh6gcstaletime
= strtoul(buf
, NULL
, 0);
1495 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1498 if (!system_get_dadtransmits(dev
, buf
, sizeof(buf
))) {
1499 s
->dadtransmits
= strtoul(buf
, NULL
, 0);
1500 s
->flags
|= DEV_OPT_DADTRANSMITS
;
1503 if (!system_get_sendredirects(dev
, buf
, sizeof(buf
))) {
1504 s
->sendredirects
= strtoul(buf
, NULL
, 0);
1505 s
->flags
|= DEV_OPT_SENDREDIRECTS
;
1510 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
, unsigned int apply_mask
)
1515 memset(&ifr
, 0, sizeof(ifr
));
1516 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1517 if (s
->flags
& DEV_OPT_MTU
& apply_mask
) {
1518 ifr
.ifr_mtu
= s
->mtu
;
1519 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
1520 s
->flags
&= ~DEV_OPT_MTU
;
1522 if (s
->flags
& DEV_OPT_MTU6
& apply_mask
) {
1523 system_update_ipv6_mtu(dev
, s
->mtu6
);
1525 if (s
->flags
& DEV_OPT_TXQUEUELEN
& apply_mask
) {
1526 ifr
.ifr_qlen
= s
->txqueuelen
;
1527 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
1528 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
1530 if ((s
->flags
& DEV_OPT_MACADDR
& apply_mask
) && !dev
->external
) {
1531 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
1532 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
1533 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
1534 s
->flags
&= ~DEV_OPT_MACADDR
;
1536 if (s
->flags
& DEV_OPT_IPV6
& apply_mask
)
1537 system_set_disable_ipv6(dev
, s
->ipv6
? "0" : "1");
1538 if (s
->flags
& DEV_OPT_PROMISC
& apply_mask
) {
1539 if (system_if_flags(dev
->ifname
, s
->promisc
? IFF_PROMISC
: 0,
1540 !s
->promisc
? IFF_PROMISC
: 0) < 0)
1541 s
->flags
&= ~DEV_OPT_PROMISC
;
1543 if (s
->flags
& DEV_OPT_RPFILTER
& apply_mask
) {
1544 snprintf(buf
, sizeof(buf
), "%u", s
->rpfilter
);
1545 system_set_rpfilter(dev
, buf
);
1547 if (s
->flags
& DEV_OPT_ACCEPTLOCAL
& apply_mask
)
1548 system_set_acceptlocal(dev
, s
->acceptlocal
? "1" : "0");
1549 if (s
->flags
& DEV_OPT_IGMPVERSION
& apply_mask
) {
1550 snprintf(buf
, sizeof(buf
), "%u", s
->igmpversion
);
1551 system_set_igmpversion(dev
, buf
);
1553 if (s
->flags
& DEV_OPT_MLDVERSION
& apply_mask
) {
1554 snprintf(buf
, sizeof(buf
), "%u", s
->mldversion
);
1555 system_set_mldversion(dev
, buf
);
1557 if (s
->flags
& DEV_OPT_NEIGHREACHABLETIME
& apply_mask
) {
1558 snprintf(buf
, sizeof(buf
), "%u", s
->neigh4reachabletime
);
1559 system_set_neigh4reachabletime(dev
, buf
);
1560 snprintf(buf
, sizeof(buf
), "%u", s
->neigh6reachabletime
);
1561 system_set_neigh6reachabletime(dev
, buf
);
1563 if (s
->flags
& DEV_OPT_NEIGHLOCKTIME
& apply_mask
) {
1564 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4locktime
);
1565 system_set_neigh4locktime(dev
, buf
);
1567 if (s
->flags
& DEV_OPT_NEIGHGCSTALETIME
& apply_mask
) {
1568 snprintf(buf
, sizeof(buf
), "%u", s
->neigh4gcstaletime
);
1569 system_set_neigh4gcstaletime(dev
, buf
);
1570 snprintf(buf
, sizeof(buf
), "%u", s
->neigh6gcstaletime
);
1571 system_set_neigh6gcstaletime(dev
, buf
);
1573 if (s
->flags
& DEV_OPT_DADTRANSMITS
& apply_mask
) {
1574 snprintf(buf
, sizeof(buf
), "%u", s
->dadtransmits
);
1575 system_set_dadtransmits(dev
, buf
);
1577 if (s
->flags
& DEV_OPT_MULTICAST
& apply_mask
) {
1578 if (system_if_flags(dev
->ifname
, s
->multicast
? IFF_MULTICAST
: 0,
1579 !s
->multicast
? IFF_MULTICAST
: 0) < 0)
1580 s
->flags
&= ~DEV_OPT_MULTICAST
;
1582 if (s
->flags
& DEV_OPT_SENDREDIRECTS
& apply_mask
)
1583 system_set_sendredirects(dev
, s
->sendredirects
? "1" : "0");
1586 int system_if_up(struct device
*dev
)
1588 system_if_get_settings(dev
, &dev
->orig_settings
);
1589 /* Only keep orig settings based on what needs to be set */
1590 dev
->orig_settings
.valid_flags
= dev
->orig_settings
.flags
;
1591 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
1592 system_if_apply_settings(dev
, &dev
->settings
, dev
->settings
.flags
);
1593 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
1596 int system_if_down(struct device
*dev
)
1598 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
1599 system_if_apply_settings(dev
, &dev
->orig_settings
, dev
->orig_settings
.flags
);
1603 struct if_check_data
{
1609 #ifndef IFF_LOWER_UP
1610 #define IFF_LOWER_UP 0x10000
1613 static int cb_if_check_valid(struct nl_msg
*msg
, void *arg
)
1615 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
1616 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
1617 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1619 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
1622 device_set_present(chk
->dev
, ifi
->ifi_index
> 0 ? true : false);
1623 device_set_link(chk
->dev
, ifi
->ifi_flags
& IFF_LOWER_UP
? true : false);
1628 static int cb_if_check_ack(struct nl_msg
*msg
, void *arg
)
1630 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1635 static int cb_if_check_error(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
1637 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1639 device_set_present(chk
->dev
, false);
1640 device_set_link(chk
->dev
, false);
1641 chk
->pending
= err
->error
;
1646 int system_if_check(struct device
*dev
)
1648 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1650 struct ifinfomsg ifi
= {
1651 .ifi_family
= AF_UNSPEC
,
1654 struct if_check_data chk
= {
1663 msg
= nlmsg_alloc_simple(RTM_GETLINK
, 0);
1667 if (nlmsg_append(msg
, &ifi
, sizeof(ifi
), 0) ||
1668 nla_put_string(msg
, IFLA_IFNAME
, dev
->ifname
))
1671 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_if_check_valid
, &chk
);
1672 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, cb_if_check_ack
, &chk
);
1673 nl_cb_err(cb
, NL_CB_CUSTOM
, cb_if_check_error
, &chk
);
1675 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
1679 while (chk
.pending
> 0)
1680 nl_recvmsgs(sock_rtnl
, cb
);
1692 system_if_get_parent(struct device
*dev
)
1694 char buf
[64], *devname
;
1695 int ifindex
, iflink
, len
;
1698 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
1699 f
= fopen(buf
, "r");
1703 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
1710 iflink
= strtoul(buf
, NULL
, 0);
1711 ifindex
= system_if_resolve(dev
);
1712 if (!iflink
|| iflink
== ifindex
)
1715 devname
= if_indextoname(iflink
, buf
);
1719 return device_get(devname
, true);
1723 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
1729 fd
= openat(dir_fd
, file
, O_RDONLY
);
1734 len
= read(fd
, buf
, len
- 1);
1738 } else if (len
> 0) {
1741 c
= strchr(buf
, '\n');
1754 read_uint64_file(int dir_fd
, const char *file
, uint64_t *val
)
1759 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
1761 *val
= strtoull(buf
, NULL
, 0);
1766 /* Assume advertised flags == supported flags */
1767 static const struct {
1770 } ethtool_link_modes
[] = {
1771 { ADVERTISED_10baseT_Half
, "10baseT-H" },
1772 { ADVERTISED_10baseT_Full
, "10baseT-F" },
1773 { ADVERTISED_100baseT_Half
, "100baseT-H" },
1774 { ADVERTISED_100baseT_Full
, "100baseT-F" },
1775 { ADVERTISED_1000baseT_Half
, "1000baseT-H" },
1776 { ADVERTISED_1000baseT_Full
, "1000baseT-F" },
1777 { ADVERTISED_1000baseKX_Full
, "1000baseKX-F" },
1778 { ADVERTISED_2500baseX_Full
, "2500baseX-F" },
1779 { ADVERTISED_10000baseT_Full
, "10000baseT-F" },
1780 { ADVERTISED_10000baseKX4_Full
, "10000baseKX4-F" },
1781 { ADVERTISED_10000baseKR_Full
, "10000baseKR-F" },
1782 { ADVERTISED_20000baseMLD2_Full
, "20000baseMLD2-F" },
1783 { ADVERTISED_20000baseKR2_Full
, "20000baseKR2-F" },
1784 { ADVERTISED_40000baseKR4_Full
, "40000baseKR4-F" },
1785 { ADVERTISED_40000baseCR4_Full
, "40000baseCR4-F" },
1786 { ADVERTISED_40000baseSR4_Full
, "40000baseSR4-F" },
1787 { ADVERTISED_40000baseLR4_Full
, "40000baseLR4-F" },
1788 #ifdef ADVERTISED_56000baseKR4_Full
1789 { ADVERTISED_56000baseKR4_Full
, "56000baseKR4-F" },
1790 { ADVERTISED_56000baseCR4_Full
, "56000baseCR4-F" },
1791 { ADVERTISED_56000baseSR4_Full
, "56000baseSR4-F" },
1792 { ADVERTISED_56000baseLR4_Full
, "56000baseLR4-F" },
1796 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
1799 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
1800 if (mask
& ethtool_link_modes
[i
].mask
)
1801 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
1806 system_if_force_external(const char *ifname
)
1811 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/phy80211", ifname
);
1812 return stat(buf
, &s
) == 0;
1816 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
1818 struct ethtool_cmd ecmd
;
1823 memset(&ecmd
, 0, sizeof(ecmd
));
1824 memset(&ifr
, 0, sizeof(ifr
));
1825 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
) - 1);
1826 ifr
.ifr_data
= (caddr_t
) &ecmd
;
1827 ecmd
.cmd
= ETHTOOL_GSET
;
1829 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
1830 c
= blobmsg_open_array(b
, "link-advertising");
1831 system_add_link_modes(b
, ecmd
.advertising
);
1832 blobmsg_close_array(b
, c
);
1834 c
= blobmsg_open_array(b
, "link-partner-advertising");
1835 system_add_link_modes(b
, ecmd
.lp_advertising
);
1836 blobmsg_close_array(b
, c
);
1838 c
= blobmsg_open_array(b
, "link-supported");
1839 system_add_link_modes(b
, ecmd
.supported
);
1840 blobmsg_close_array(b
, c
);
1842 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
1843 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
1844 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
1845 blobmsg_add_string_buffer(b
);
1847 blobmsg_add_u8(b
, "autoneg", !!ecmd
.autoneg
);
1854 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
1856 const char *const counters
[] = {
1857 "collisions", "rx_frame_errors", "tx_compressed",
1858 "multicast", "rx_length_errors", "tx_dropped",
1859 "rx_bytes", "rx_missed_errors", "tx_errors",
1860 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1861 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1862 "rx_dropped", "tx_aborted_errors", "tx_packets",
1863 "rx_errors", "tx_bytes", "tx_window_errors",
1864 "rx_fifo_errors", "tx_carrier_errors",
1871 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
1872 stats_dir
= open(buf
, O_DIRECTORY
);
1876 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
1877 if (read_uint64_file(stats_dir
, counters
[i
], &val
))
1878 blobmsg_add_u64(b
, counters
[i
], val
);
1884 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
1886 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
1887 int alen
= v4
? 4 : 16;
1888 unsigned int flags
= 0;
1889 struct ifaddrmsg ifa
= {
1890 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1891 .ifa_prefixlen
= addr
->mask
,
1892 .ifa_index
= dev
->ifindex
,
1896 if (cmd
== RTM_NEWADDR
)
1897 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1899 msg
= nlmsg_alloc_simple(cmd
, flags
);
1903 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
1904 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
1906 if (addr
->broadcast
)
1907 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
1908 if (addr
->point_to_point
)
1909 nla_put_u32(msg
, IFA_ADDRESS
, addr
->point_to_point
);
1911 time_t now
= system_get_rtime();
1912 struct ifa_cacheinfo cinfo
= {0xffffffffU
, 0xffffffffU
, 0, 0};
1914 if (addr
->preferred_until
) {
1915 int64_t preferred
= addr
->preferred_until
- now
;
1918 else if (preferred
> UINT32_MAX
)
1919 preferred
= UINT32_MAX
;
1921 cinfo
.ifa_prefered
= preferred
;
1924 if (addr
->valid_until
) {
1925 int64_t valid
= addr
->valid_until
- now
;
1930 else if (valid
> UINT32_MAX
)
1933 cinfo
.ifa_valid
= valid
;
1936 nla_put(msg
, IFA_CACHEINFO
, sizeof(cinfo
), &cinfo
);
1938 if (cmd
== RTM_NEWADDR
&& (addr
->flags
& DEVADDR_OFFLINK
))
1939 nla_put_u32(msg
, IFA_FLAGS
, IFA_F_NOPREFIXROUTE
);
1942 return system_rtnl_call(msg
);
1945 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
1947 return system_addr(dev
, addr
, RTM_NEWADDR
);
1950 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
1952 return system_addr(dev
, addr
, RTM_DELADDR
);
1955 static int system_neigh(struct device
*dev
, struct device_neighbor
*neighbor
, int cmd
)
1957 int alen
= ((neighbor
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
1958 unsigned int flags
= 0;
1959 struct ndmsg ndm
= {
1960 .ndm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1961 .ndm_ifindex
= dev
->ifindex
,
1962 .ndm_state
= NUD_PERMANENT
,
1963 .ndm_flags
= (neighbor
->proxy
? NTF_PROXY
: 0) | (neighbor
->router
? NTF_ROUTER
: 0),
1967 if (cmd
== RTM_NEWNEIGH
)
1968 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1970 msg
= nlmsg_alloc_simple(cmd
, flags
);
1975 nlmsg_append(msg
, &ndm
, sizeof(ndm
), 0);
1977 nla_put(msg
, NDA_DST
, alen
, &neighbor
->addr
);
1978 if (neighbor
->flags
& DEVNEIGH_MAC
)
1979 nla_put(msg
, NDA_LLADDR
, sizeof(neighbor
->macaddr
), &neighbor
->macaddr
);
1982 return system_rtnl_call(msg
);
1985 int system_add_neighbor(struct device
*dev
, struct device_neighbor
*neighbor
)
1987 return system_neigh(dev
, neighbor
, RTM_NEWNEIGH
);
1990 int system_del_neighbor(struct device
*dev
, struct device_neighbor
*neighbor
)
1992 return system_neigh(dev
, neighbor
, RTM_DELNEIGH
);
1995 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
1997 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
1999 unsigned int flags
= 0;
2002 have_gw
= !!route
->nexthop
.in
.s_addr
;
2004 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
2005 route
->nexthop
.in6
.s6_addr32
[1] ||
2006 route
->nexthop
.in6
.s6_addr32
[2] ||
2007 route
->nexthop
.in6
.s6_addr32
[3];
2009 unsigned int table
= (route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))
2010 ? route
->table
: RT_TABLE_MAIN
;
2012 struct rtmsg rtm
= {
2013 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
2014 .rtm_dst_len
= route
->mask
,
2015 .rtm_src_len
= route
->sourcemask
,
2016 .rtm_table
= (table
< 256) ? table
: RT_TABLE_UNSPEC
,
2017 .rtm_protocol
= (route
->flags
& DEVROUTE_PROTO
) ? route
->proto
: RTPROT_STATIC
,
2018 .rtm_scope
= RT_SCOPE_NOWHERE
,
2019 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
2020 .rtm_flags
= (route
->flags
& DEVROUTE_ONLINK
) ? RTNH_F_ONLINK
: 0,
2024 if (cmd
== RTM_NEWROUTE
) {
2025 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
2027 if (!dev
) { /* Add null-route */
2028 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
2029 rtm
.rtm_type
= RTN_UNREACHABLE
;
2032 rtm
.rtm_scope
= (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
2035 if (route
->flags
& DEVROUTE_TYPE
) {
2036 rtm
.rtm_type
= route
->type
;
2037 if (!(route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))) {
2038 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_BROADCAST
||
2039 rtm
.rtm_type
== RTN_NAT
|| rtm
.rtm_type
== RTN_ANYCAST
)
2040 rtm
.rtm_table
= RT_TABLE_LOCAL
;
2043 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_NAT
) {
2044 rtm
.rtm_scope
= RT_SCOPE_HOST
;
2045 } else if (rtm
.rtm_type
== RTN_BROADCAST
|| rtm
.rtm_type
== RTN_MULTICAST
||
2046 rtm
.rtm_type
== RTN_ANYCAST
) {
2047 rtm
.rtm_scope
= RT_SCOPE_LINK
;
2048 } else if (rtm
.rtm_type
== RTN_BLACKHOLE
|| rtm
.rtm_type
== RTN_UNREACHABLE
||
2049 rtm
.rtm_type
== RTN_PROHIBIT
|| rtm
.rtm_type
== RTN_FAILED_POLICY
||
2050 rtm
.rtm_type
== RTN_THROW
) {
2051 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
2056 msg
= nlmsg_alloc_simple(cmd
, flags
);
2060 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
2063 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
2065 if (route
->sourcemask
) {
2066 if (rtm
.rtm_family
== AF_INET
)
2067 nla_put(msg
, RTA_PREFSRC
, alen
, &route
->source
);
2069 nla_put(msg
, RTA_SRC
, alen
, &route
->source
);
2072 if (route
->metric
> 0)
2073 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
2076 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
2079 nla_put_u32(msg
, RTA_OIF
, dev
->ifindex
);
2082 nla_put_u32(msg
, RTA_TABLE
, table
);
2084 if (route
->flags
& DEVROUTE_MTU
) {
2085 struct nlattr
*metrics
;
2087 if (!(metrics
= nla_nest_start(msg
, RTA_METRICS
)))
2088 goto nla_put_failure
;
2090 nla_put_u32(msg
, RTAX_MTU
, route
->mtu
);
2092 nla_nest_end(msg
, metrics
);
2095 return system_rtnl_call(msg
);
2102 int system_add_route(struct device
*dev
, struct device_route
*route
)
2104 return system_rt(dev
, route
, RTM_NEWROUTE
);
2107 int system_del_route(struct device
*dev
, struct device_route
*route
)
2109 return system_rt(dev
, route
, RTM_DELROUTE
);
2112 int system_flush_routes(void)
2114 const char *names
[] = {
2115 "/proc/sys/net/ipv4/route/flush",
2116 "/proc/sys/net/ipv6/route/flush"
2120 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
2121 fd
= open(names
[i
], O_WRONLY
);
2125 if (write(fd
, "-1", 2)) {}
2131 bool system_resolve_rt_type(const char *type
, unsigned int *id
)
2133 return system_rtn_aton(type
, id
);
2136 bool system_resolve_rt_proto(const char *type
, unsigned int *id
)
2140 unsigned int n
, proto
= 256;
2141 n
= strtoul(type
, &e
, 0);
2142 if (!*e
&& e
!= type
)
2144 else if (!strcmp(type
, "unspec"))
2145 proto
= RTPROT_UNSPEC
;
2146 else if (!strcmp(type
, "kernel"))
2147 proto
= RTPROT_KERNEL
;
2148 else if (!strcmp(type
, "boot"))
2149 proto
= RTPROT_BOOT
;
2150 else if (!strcmp(type
, "static"))
2151 proto
= RTPROT_STATIC
;
2152 else if ((f
= fopen("/etc/iproute2/rt_protos", "r")) != NULL
) {
2153 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
) {
2154 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
2157 n
= strtoul(e
, NULL
, 10);
2158 e
= strtok(NULL
, " \t\n");
2160 if (e
&& !strcmp(e
, type
)) {
2175 bool system_resolve_rt_table(const char *name
, unsigned int *id
)
2179 unsigned int n
, table
= RT_TABLE_UNSPEC
;
2181 /* first try to parse table as number */
2182 if ((n
= strtoul(name
, &e
, 0)) > 0 && !*e
)
2185 /* handle well known aliases */
2186 else if (!strcmp(name
, "default"))
2187 table
= RT_TABLE_DEFAULT
;
2188 else if (!strcmp(name
, "main"))
2189 table
= RT_TABLE_MAIN
;
2190 else if (!strcmp(name
, "local"))
2191 table
= RT_TABLE_LOCAL
;
2193 /* try to look up name in /etc/iproute2/rt_tables */
2194 else if ((f
= fopen("/etc/iproute2/rt_tables", "r")) != NULL
)
2196 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
)
2198 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
2201 n
= strtoul(e
, NULL
, 10);
2202 e
= strtok(NULL
, " \t\n");
2204 if (e
&& !strcmp(e
, name
))
2214 if (table
== RT_TABLE_UNSPEC
)
2221 bool system_is_default_rt_table(unsigned int id
)
2223 return (id
== RT_TABLE_MAIN
);
2226 bool system_resolve_rpfilter(const char *filter
, unsigned int *id
)
2231 if (!strcmp(filter
, "strict"))
2233 else if (!strcmp(filter
, "loose"))
2236 n
= strtoul(filter
, &e
, 0);
2237 if (*e
|| e
== filter
|| n
> 2)
2245 static int system_iprule(struct iprule
*rule
, int cmd
)
2247 int alen
= ((rule
->flags
& IPRULE_FAMILY
) == IPRULE_INET4
) ? 4 : 16;
2250 struct rtmsg rtm
= {
2251 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
2252 .rtm_protocol
= RTPROT_STATIC
,
2253 .rtm_scope
= RT_SCOPE_UNIVERSE
,
2254 .rtm_table
= RT_TABLE_UNSPEC
,
2255 .rtm_type
= RTN_UNSPEC
,
2259 if (cmd
== RTM_NEWRULE
)
2260 rtm
.rtm_type
= RTN_UNICAST
;
2263 rtm
.rtm_flags
|= FIB_RULE_INVERT
;
2265 if (rule
->flags
& IPRULE_SRC
)
2266 rtm
.rtm_src_len
= rule
->src_mask
;
2268 if (rule
->flags
& IPRULE_DEST
)
2269 rtm
.rtm_dst_len
= rule
->dest_mask
;
2271 if (rule
->flags
& IPRULE_TOS
)
2272 rtm
.rtm_tos
= rule
->tos
;
2274 if (rule
->flags
& IPRULE_LOOKUP
) {
2275 if (rule
->lookup
< 256)
2276 rtm
.rtm_table
= rule
->lookup
;
2279 if (rule
->flags
& IPRULE_ACTION
)
2280 rtm
.rtm_type
= rule
->action
;
2281 else if (rule
->flags
& IPRULE_GOTO
)
2282 rtm
.rtm_type
= FR_ACT_GOTO
;
2283 else if (!(rule
->flags
& (IPRULE_LOOKUP
| IPRULE_ACTION
| IPRULE_GOTO
)))
2284 rtm
.rtm_type
= FR_ACT_NOP
;
2286 msg
= nlmsg_alloc_simple(cmd
, NLM_F_REQUEST
);
2291 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
2293 if (rule
->flags
& IPRULE_IN
)
2294 nla_put(msg
, FRA_IFNAME
, strlen(rule
->in_dev
) + 1, rule
->in_dev
);
2296 if (rule
->flags
& IPRULE_OUT
)
2297 nla_put(msg
, FRA_OIFNAME
, strlen(rule
->out_dev
) + 1, rule
->out_dev
);
2299 if (rule
->flags
& IPRULE_SRC
)
2300 nla_put(msg
, FRA_SRC
, alen
, &rule
->src_addr
);
2302 if (rule
->flags
& IPRULE_DEST
)
2303 nla_put(msg
, FRA_DST
, alen
, &rule
->dest_addr
);
2305 if (rule
->flags
& IPRULE_PRIORITY
)
2306 nla_put_u32(msg
, FRA_PRIORITY
, rule
->priority
);
2307 else if (cmd
== RTM_NEWRULE
)
2308 nla_put_u32(msg
, FRA_PRIORITY
, rule
->order
);
2310 if (rule
->flags
& IPRULE_FWMARK
)
2311 nla_put_u32(msg
, FRA_FWMARK
, rule
->fwmark
);
2313 if (rule
->flags
& IPRULE_FWMASK
)
2314 nla_put_u32(msg
, FRA_FWMASK
, rule
->fwmask
);
2316 if (rule
->flags
& IPRULE_LOOKUP
) {
2317 if (rule
->lookup
>= 256)
2318 nla_put_u32(msg
, FRA_TABLE
, rule
->lookup
);
2321 if (rule
->flags
& IPRULE_SUP_PREFIXLEN
)
2322 nla_put_u32(msg
, FRA_SUPPRESS_PREFIXLEN
, rule
->sup_prefixlen
);
2324 if (rule
->flags
& IPRULE_GOTO
)
2325 nla_put_u32(msg
, FRA_GOTO
, rule
->gotoid
);
2327 return system_rtnl_call(msg
);
2330 int system_add_iprule(struct iprule
*rule
)
2332 return system_iprule(rule
, RTM_NEWRULE
);
2335 int system_del_iprule(struct iprule
*rule
)
2337 return system_iprule(rule
, RTM_DELRULE
);
2340 int system_flush_iprules(void)
2345 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET
);
2346 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET6
);
2348 memset(&rule
, 0, sizeof(rule
));
2351 rule
.flags
= IPRULE_INET4
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2354 rule
.lookup
= RT_TABLE_LOCAL
;
2355 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2357 rule
.priority
= 32766;
2358 rule
.lookup
= RT_TABLE_MAIN
;
2359 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2361 rule
.priority
= 32767;
2362 rule
.lookup
= RT_TABLE_DEFAULT
;
2363 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2366 rule
.flags
= IPRULE_INET6
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2369 rule
.lookup
= RT_TABLE_LOCAL
;
2370 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2372 rule
.priority
= 32766;
2373 rule
.lookup
= RT_TABLE_MAIN
;
2374 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2379 bool system_resolve_iprule_action(const char *action
, unsigned int *id
)
2381 return system_rtn_aton(action
, id
);
2384 time_t system_get_rtime(void)
2389 if (syscall(__NR_clock_gettime
, CLOCK_MONOTONIC
, &ts
) == 0)
2392 if (gettimeofday(&tv
, NULL
) == 0)
2399 #define IP_DF 0x4000
2402 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
2406 memset(&ifr
, 0, sizeof(ifr
));
2407 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
) - 1);
2408 ifr
.ifr_ifru
.ifru_data
= p
;
2409 return ioctl(sock_ioctl
, cmd
, &ifr
);
2412 #ifdef IFLA_IPTUN_MAX
2413 static int system_add_ip6_tunnel(const char *name
, const unsigned int link
,
2414 struct blob_attr
**tb
)
2416 struct nl_msg
*nlm
= nlmsg_alloc_simple(RTM_NEWLINK
,
2417 NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2418 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
};
2419 struct blob_attr
*cur
;
2420 int ret
= 0, ttl
= 0;
2425 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2426 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2429 nla_put_u32(nlm
, IFLA_LINK
, link
);
2431 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2437 nla_put_string(nlm
, IFLA_INFO_KIND
, "ip6tnl");
2438 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2445 nla_put_u32(nlm
, IFLA_IPTUN_LINK
, link
);
2447 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2448 ttl
= blobmsg_get_u32(cur
);
2450 nla_put_u8(nlm
, IFLA_IPTUN_PROTO
, IPPROTO_IPIP
);
2451 nla_put_u8(nlm
, IFLA_IPTUN_TTL
, (ttl
) ? ttl
: 64);
2453 struct in6_addr in6buf
;
2454 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2455 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2459 nla_put(nlm
, IFLA_IPTUN_LOCAL
, sizeof(in6buf
), &in6buf
);
2462 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2463 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2467 nla_put(nlm
, IFLA_IPTUN_REMOTE
, sizeof(in6buf
), &in6buf
);
2470 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2471 struct blob_attr
*tb_data
[__IPIP6_DATA_ATTR_MAX
];
2472 uint32_t tun_flags
= IP6_TNL_F_IGN_ENCAP_LIMIT
;
2474 blobmsg_parse(ipip6_data_attr_list
.params
, __IPIP6_DATA_ATTR_MAX
, tb_data
,
2475 blobmsg_data(cur
), blobmsg_len(cur
));
2477 if ((cur
= tb_data
[IPIP6_DATA_ENCAPLIMIT
])) {
2478 char *str
= blobmsg_get_string(cur
);
2480 if (strcmp(str
, "ignore")) {
2482 unsigned encap_limit
= strtoul(str
, &e
, 0);
2484 if (e
== str
|| *e
|| encap_limit
> 255) {
2489 nla_put_u8(nlm
, IFLA_IPTUN_ENCAP_LIMIT
, encap_limit
);
2490 tun_flags
&= ~IP6_TNL_F_IGN_ENCAP_LIMIT
;
2494 #ifdef IFLA_IPTUN_FMR_MAX
2495 if ((cur
= tb_data
[IPIP6_DATA_FMRS
])) {
2496 struct blob_attr
*rcur
;
2497 unsigned rrem
, fmrcnt
= 0;
2498 struct nlattr
*fmrs
= nla_nest_start(nlm
, IFLA_IPTUN_FMRS
);
2505 blobmsg_for_each_attr(rcur
, cur
, rrem
) {
2506 struct blob_attr
*tb_fmr
[__FMR_DATA_ATTR_MAX
], *tb_cur
;
2507 struct in6_addr ip6prefix
;
2508 struct in_addr ip4prefix
;
2509 unsigned ip4len
, ip6len
, ealen
, offset
;
2511 blobmsg_parse(fmr_data_attr_list
.params
, __FMR_DATA_ATTR_MAX
, tb_fmr
,
2512 blobmsg_data(rcur
), blobmsg_len(rcur
));
2514 if (!(tb_cur
= tb_fmr
[FMR_DATA_PREFIX6
]) ||
2515 !parse_ip_and_netmask(AF_INET6
,
2516 blobmsg_data(tb_cur
), &ip6prefix
,
2522 if (!(tb_cur
= tb_fmr
[FMR_DATA_PREFIX4
]) ||
2523 !parse_ip_and_netmask(AF_INET
,
2524 blobmsg_data(tb_cur
), &ip4prefix
,
2530 if (!(tb_cur
= tb_fmr
[FMR_DATA_EALEN
])) {
2534 ealen
= blobmsg_get_u32(tb_cur
);
2536 if (!(tb_cur
= tb_fmr
[FMR_DATA_OFFSET
])) {
2540 offset
= blobmsg_get_u32(tb_cur
);
2542 struct nlattr
*rule
= nla_nest_start(nlm
, ++fmrcnt
);
2548 nla_put(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX
, sizeof(ip6prefix
), &ip6prefix
);
2549 nla_put(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX
, sizeof(ip4prefix
), &ip4prefix
);
2550 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX_LEN
, ip6len
);
2551 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX_LEN
, ip4len
);
2552 nla_put_u8(nlm
, IFLA_IPTUN_FMR_EA_LEN
, ealen
);
2553 nla_put_u8(nlm
, IFLA_IPTUN_FMR_OFFSET
, offset
);
2555 nla_nest_end(nlm
, rule
);
2558 nla_nest_end(nlm
, fmrs
);
2562 nla_put_u32(nlm
, IFLA_IPTUN_FLAGS
, tun_flags
);
2565 nla_nest_end(nlm
, infodata
);
2566 nla_nest_end(nlm
, linkinfo
);
2568 return system_rtnl_call(nlm
);
2576 #ifdef IFLA_IPTUN_MAX
2577 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
2578 static int system_add_gre_tunnel(const char *name
, const char *kind
,
2579 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2582 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2583 struct blob_attr
*cur
;
2584 uint32_t ikey
= 0, okey
= 0, flowinfo
= 0, flags6
= IP6_TNL_F_IGN_ENCAP_LIMIT
;
2585 uint16_t iflags
= 0, oflags
= 0;
2587 int ret
= 0, ttl
= 0;
2588 unsigned encap_limit
= 0;
2590 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2594 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2595 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2597 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2603 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2604 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2611 nla_put_u32(nlm
, IFLA_GRE_LINK
, link
);
2613 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2614 ttl
= blobmsg_get_u32(cur
);
2616 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2617 char *str
= blobmsg_get_string(cur
);
2618 if (strcmp(str
, "inherit")) {
2621 if (!system_tos_aton(str
, &uval
)) {
2627 flowinfo
|= htonl(uval
<< 20) & IP6_FLOWINFO_TCLASS
;
2632 flags6
|= IP6_TNL_F_USE_ORIG_TCLASS
;
2638 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2639 struct blob_attr
*tb_data
[__GRE_DATA_ATTR_MAX
];
2641 blobmsg_parse(gre_data_attr_list
.params
, __GRE_DATA_ATTR_MAX
, tb_data
,
2642 blobmsg_data(cur
), blobmsg_len(cur
));
2644 if ((cur
= tb_data
[GRE_DATA_IKEY
])) {
2645 if ((ikey
= blobmsg_get_u32(cur
)))
2649 if ((cur
= tb_data
[GRE_DATA_OKEY
])) {
2650 if ((okey
= blobmsg_get_u32(cur
)))
2654 if ((cur
= tb_data
[GRE_DATA_ICSUM
])) {
2655 if (blobmsg_get_bool(cur
))
2659 if ((cur
= tb_data
[GRE_DATA_OCSUM
])) {
2660 if (blobmsg_get_bool(cur
))
2664 if ((cur
= tb_data
[GRE_DATA_ISEQNO
])) {
2665 if (blobmsg_get_bool(cur
))
2669 if ((cur
= tb_data
[GRE_DATA_OSEQNO
])) {
2670 if (blobmsg_get_bool(cur
))
2674 if ((cur
= tb_data
[GRE_DATA_ENCAPLIMIT
])) {
2675 char *str
= blobmsg_get_string(cur
);
2677 if (strcmp(str
, "ignore")) {
2680 encap_limit
= strtoul(str
, &e
, 0);
2682 if (e
== str
|| *e
|| encap_limit
> 255) {
2687 flags6
&= ~IP6_TNL_F_IGN_ENCAP_LIMIT
;
2693 struct in6_addr in6buf
;
2694 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2695 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2699 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(in6buf
), &in6buf
);
2702 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2703 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2707 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(in6buf
), &in6buf
);
2710 if (!(flags6
& IP6_TNL_F_IGN_ENCAP_LIMIT
))
2711 nla_put_u8(nlm
, IFLA_GRE_ENCAP_LIMIT
, encap_limit
);
2714 nla_put_u32(nlm
, IFLA_GRE_FLOWINFO
, flowinfo
);
2717 nla_put_u32(nlm
, IFLA_GRE_FLAGS
, flags6
);
2722 struct in_addr inbuf
;
2725 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2726 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2730 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(inbuf
), &inbuf
);
2733 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2734 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2738 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(inbuf
), &inbuf
);
2740 if (IN_MULTICAST(ntohl(inbuf
.s_addr
))) {
2742 okey
= inbuf
.s_addr
;
2747 ikey
= inbuf
.s_addr
;
2753 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2754 set_df
= blobmsg_get_bool(cur
);
2757 /* ttl != 0 and nopmtudisc are incompatible */
2765 nla_put_u8(nlm
, IFLA_GRE_PMTUDISC
, set_df
? 1 : 0);
2767 nla_put_u8(nlm
, IFLA_GRE_TOS
, tos
);
2771 nla_put_u8(nlm
, IFLA_GRE_TTL
, ttl
);
2774 nla_put_u16(nlm
, IFLA_GRE_OFLAGS
, oflags
);
2777 nla_put_u16(nlm
, IFLA_GRE_IFLAGS
, iflags
);
2780 nla_put_u32(nlm
, IFLA_GRE_OKEY
, htonl(okey
));
2783 nla_put_u32(nlm
, IFLA_GRE_IKEY
, htonl(ikey
));
2785 nla_nest_end(nlm
, infodata
);
2786 nla_nest_end(nlm
, linkinfo
);
2788 return system_rtnl_call(nlm
);
2797 static int system_add_vti_tunnel(const char *name
, const char *kind
,
2798 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2801 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2802 struct blob_attr
*cur
;
2805 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2809 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2810 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2812 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2818 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2819 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2826 nla_put_u32(nlm
, IFLA_VTI_LINK
, link
);
2829 struct in6_addr in6buf
;
2830 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2831 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2835 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(in6buf
), &in6buf
);
2838 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2839 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2843 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(in6buf
), &in6buf
);
2847 struct in_addr inbuf
;
2849 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2850 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2854 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(inbuf
), &inbuf
);
2857 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2858 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2862 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(inbuf
), &inbuf
);
2867 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2868 struct blob_attr
*tb_data
[__VTI_DATA_ATTR_MAX
];
2869 uint32_t ikey
= 0, okey
= 0;
2871 blobmsg_parse(vti_data_attr_list
.params
, __VTI_DATA_ATTR_MAX
, tb_data
,
2872 blobmsg_data(cur
), blobmsg_len(cur
));
2874 if ((cur
= tb_data
[VTI_DATA_IKEY
])) {
2875 if ((ikey
= blobmsg_get_u32(cur
)))
2876 nla_put_u32(nlm
, IFLA_VTI_IKEY
, htonl(ikey
));
2879 if ((cur
= tb_data
[VTI_DATA_OKEY
])) {
2880 if ((okey
= blobmsg_get_u32(cur
)))
2881 nla_put_u32(nlm
, IFLA_VTI_OKEY
, htonl(okey
));
2885 nla_nest_end(nlm
, infodata
);
2886 nla_nest_end(nlm
, linkinfo
);
2888 return system_rtnl_call(nlm
);
2896 #ifdef IFLA_XFRM_MAX
2897 static int system_add_xfrm_tunnel(const char *name
, const char *kind
,
2898 const unsigned int link
, struct blob_attr
**tb
)
2901 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2902 struct blob_attr
*cur
;
2905 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2909 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2910 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2912 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2918 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2919 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2926 nla_put_u32(nlm
, IFLA_XFRM_LINK
, link
);
2928 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
2929 struct blob_attr
*tb_data
[__XFRM_DATA_ATTR_MAX
];
2932 blobmsg_parse(xfrm_data_attr_list
.params
, __XFRM_DATA_ATTR_MAX
, tb_data
,
2933 blobmsg_data(cur
), blobmsg_len(cur
));
2935 if ((cur
= tb_data
[XFRM_DATA_IF_ID
])) {
2936 if ((if_id
= blobmsg_get_u32(cur
)))
2937 nla_put_u32(nlm
, IFLA_XFRM_IF_ID
, if_id
);
2942 nla_nest_end(nlm
, infodata
);
2943 nla_nest_end(nlm
, linkinfo
);
2945 return system_rtnl_call(nlm
);
2953 #ifdef IFLA_VXLAN_MAX
2954 static int system_add_vxlan(const char *name
, const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2956 struct blob_attr
*tb_data
[__VXLAN_DATA_ATTR_MAX
];
2958 struct nlattr
*linkinfo
, *data
;
2959 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
2960 struct blob_attr
*cur
;
2963 if ((cur
= tb
[TUNNEL_ATTR_DATA
]))
2964 blobmsg_parse(vxlan_data_attr_list
.params
, __VXLAN_DATA_ATTR_MAX
, tb_data
,
2965 blobmsg_data(cur
), blobmsg_len(cur
));
2969 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
2974 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
2976 nla_put_string(msg
, IFLA_IFNAME
, name
);
2978 if ((cur
= tb_data
[VXLAN_DATA_ATTR_MACADDR
])) {
2979 struct ether_addr
*ea
= ether_aton(blobmsg_get_string(cur
));
2985 nla_put(msg
, IFLA_ADDRESS
, ETH_ALEN
, ea
);
2988 if ((cur
= tb
[TUNNEL_ATTR_MTU
])) {
2989 uint32_t mtu
= blobmsg_get_u32(cur
);
2990 nla_put_u32(msg
, IFLA_MTU
, mtu
);
2993 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
))) {
2998 nla_put_string(msg
, IFLA_INFO_KIND
, "vxlan");
3000 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
))) {
3006 nla_put_u32(msg
, IFLA_VXLAN_LINK
, link
);
3008 if ((cur
= tb_data
[VXLAN_DATA_ATTR_ID
])) {
3009 uint32_t id
= blobmsg_get_u32(cur
);
3010 if (id
>= (1u << 24) - 1) {
3015 nla_put_u32(msg
, IFLA_VXLAN_ID
, id
);
3019 struct in6_addr in6buf
;
3020 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
3021 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
3025 nla_put(msg
, IFLA_VXLAN_LOCAL6
, sizeof(in6buf
), &in6buf
);
3028 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
3029 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
3033 nla_put(msg
, IFLA_VXLAN_GROUP6
, sizeof(in6buf
), &in6buf
);
3036 struct in_addr inbuf
;
3038 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
3039 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
3043 nla_put(msg
, IFLA_VXLAN_LOCAL
, sizeof(inbuf
), &inbuf
);
3046 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
3047 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
3051 nla_put(msg
, IFLA_VXLAN_GROUP
, sizeof(inbuf
), &inbuf
);
3055 uint32_t port
= 4789;
3056 if ((cur
= tb_data
[VXLAN_DATA_ATTR_PORT
])) {
3057 port
= blobmsg_get_u32(cur
);
3058 if (port
< 1 || port
> 65535) {
3063 nla_put_u16(msg
, IFLA_VXLAN_PORT
, htons(port
));
3065 if ((cur
= tb_data
[VXLAN_DATA_ATTR_RXCSUM
])) {
3066 bool rxcsum
= blobmsg_get_bool(cur
);
3067 nla_put_u8(msg
, IFLA_VXLAN_UDP_ZERO_CSUM6_RX
, !rxcsum
);
3070 if ((cur
= tb_data
[VXLAN_DATA_ATTR_TXCSUM
])) {
3071 bool txcsum
= blobmsg_get_bool(cur
);
3072 nla_put_u8(msg
, IFLA_VXLAN_UDP_CSUM
, txcsum
);
3073 nla_put_u8(msg
, IFLA_VXLAN_UDP_ZERO_CSUM6_TX
, !txcsum
);
3076 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
3077 char *str
= blobmsg_get_string(cur
);
3080 if (strcmp(str
, "inherit")) {
3081 if (!system_tos_aton(str
, &tos
)) {
3087 nla_put_u8(msg
, IFLA_VXLAN_TOS
, tos
);
3090 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
3091 uint32_t ttl
= blobmsg_get_u32(cur
);
3092 if (ttl
< 1 || ttl
> 255) {
3097 nla_put_u8(msg
, IFLA_VXLAN_TTL
, ttl
);
3100 nla_nest_end(msg
, data
);
3101 nla_nest_end(msg
, linkinfo
);
3103 ret
= system_rtnl_call(msg
);
3105 D(SYSTEM
, "Error adding vxlan '%s': %d\n", name
, ret
);
3115 static int system_add_sit_tunnel(const char *name
, const unsigned int link
, struct blob_attr
**tb
)
3117 struct blob_attr
*cur
;
3120 if (system_add_proto_tunnel(name
, IPPROTO_IPV6
, link
, tb
) < 0)
3124 if ((cur
= tb
[TUNNEL_ATTR_DATA
])) {
3125 struct blob_attr
*tb_data
[__SIXRD_DATA_ATTR_MAX
];
3127 struct ip_tunnel_6rd p6
;
3129 blobmsg_parse(sixrd_data_attr_list
.params
, __SIXRD_DATA_ATTR_MAX
, tb_data
,
3130 blobmsg_data(cur
), blobmsg_len(cur
));
3132 memset(&p6
, 0, sizeof(p6
));
3134 if ((cur
= tb_data
[SIXRD_DATA_PREFIX
])) {
3135 if (!parse_ip_and_netmask(AF_INET6
, blobmsg_data(cur
),
3136 &p6
.prefix
, &mask
) || mask
> 128) {
3141 p6
.prefixlen
= mask
;
3144 if ((cur
= tb_data
[SIXRD_DATA_RELAY_PREFIX
])) {
3145 if (!parse_ip_and_netmask(AF_INET
, blobmsg_data(cur
),
3146 &p6
.relay_prefix
, &mask
) || mask
> 32) {
3151 p6
.relay_prefixlen
= mask
;
3154 if (tunnel_ioctl(name
, SIOCADD6RD
, &p6
) < 0) {
3164 __system_del_ip_tunnel(name
, tb
);
3168 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
, const unsigned int link
, struct blob_attr
**tb
)
3170 struct blob_attr
*cur
;
3172 struct ip_tunnel_parm p
= {
3181 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
]) &&
3182 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.saddr
) < 1)
3185 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
]) &&
3186 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.daddr
) < 1)
3189 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
3190 set_df
= blobmsg_get_bool(cur
);
3192 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
3193 p
.iph
.ttl
= blobmsg_get_u32(cur
);
3195 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
3196 char *str
= blobmsg_get_string(cur
);
3197 if (strcmp(str
, "inherit")) {
3200 if (!system_tos_aton(str
, &uval
))
3208 p
.iph
.frag_off
= set_df
? htons(IP_DF
) : 0;
3209 /* ttl !=0 and nopmtudisc are incompatible */
3210 if (p
.iph
.ttl
&& p
.iph
.frag_off
== 0)
3213 strncpy(p
.name
, name
, sizeof(p
.name
) - 1);
3215 switch (p
.iph
.protocol
) {
3217 return tunnel_ioctl("tunl0", SIOCADDTUNNEL
, &p
);
3219 return tunnel_ioctl("sit0", SIOCADDTUNNEL
, &p
);
3226 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
)
3228 struct blob_attr
*cur
;
3231 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
3233 str
= blobmsg_data(cur
);
3235 if (!strcmp(str
, "greip") || !strcmp(str
, "gretapip") ||
3236 !strcmp(str
, "greip6") || !strcmp(str
, "gretapip6") ||
3237 !strcmp(str
, "vtiip") || !strcmp(str
, "vtiip6") ||
3238 !strcmp(str
, "vxlan") || !strcmp(str
, "vxlan6") ||
3239 !strcmp(str
, "xfrm"))
3240 return system_link_del(name
);
3242 return tunnel_ioctl(name
, SIOCDELTUNNEL
, NULL
);
3245 int system_del_ip_tunnel(const char *name
, struct blob_attr
*attr
)
3247 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
3249 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
3250 blob_data(attr
), blob_len(attr
));
3252 return __system_del_ip_tunnel(name
, tb
);
3255 int system_update_ipv6_mtu(struct device
*dev
, int mtu
)
3261 snprintf(buf
, sizeof(buf
), "/proc/sys/net/ipv6/conf/%s/mtu",
3264 fd
= open(buf
, O_RDWR
);
3269 ssize_t len
= read(fd
, buf
, sizeof(buf
) - 1);
3276 if (write(fd
, buf
, snprintf(buf
, sizeof(buf
), "%i", mtu
)) > 0)
3285 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
3287 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
3288 struct blob_attr
*cur
;
3291 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
3292 blob_data(attr
), blob_len(attr
));
3294 __system_del_ip_tunnel(name
, tb
);
3296 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
3298 str
= blobmsg_data(cur
);
3300 unsigned int ttl
= 0;
3301 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
3302 ttl
= blobmsg_get_u32(cur
);
3307 unsigned int link
= 0;
3308 if ((cur
= tb
[TUNNEL_ATTR_LINK
])) {
3309 struct interface
*iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
3313 if (iface
->l3_dev
.dev
)
3314 link
= iface
->l3_dev
.dev
->ifindex
;
3317 if (!strcmp(str
, "sit"))
3318 return system_add_sit_tunnel(name
, link
, tb
);
3319 #ifdef IFLA_IPTUN_MAX
3320 else if (!strcmp(str
, "ipip6")) {
3321 return system_add_ip6_tunnel(name
, link
, tb
);
3322 } else if (!strcmp(str
, "greip")) {
3323 return system_add_gre_tunnel(name
, "gre", link
, tb
, false);
3324 } else if (!strcmp(str
, "gretapip")) {
3325 return system_add_gre_tunnel(name
, "gretap", link
, tb
, false);
3326 } else if (!strcmp(str
, "greip6")) {
3327 return system_add_gre_tunnel(name
, "ip6gre", link
, tb
, true);
3328 } else if (!strcmp(str
, "gretapip6")) {
3329 return system_add_gre_tunnel(name
, "ip6gretap", link
, tb
, true);
3331 } else if (!strcmp(str
, "vtiip")) {
3332 return system_add_vti_tunnel(name
, "vti", link
, tb
, false);
3333 } else if (!strcmp(str
, "vtiip6")) {
3334 return system_add_vti_tunnel(name
, "vti6", link
, tb
, true);
3336 #ifdef IFLA_XFRM_MAX
3337 } else if (!strcmp(str
, "xfrm")) {
3338 return system_add_xfrm_tunnel(name
, "xfrm", link
, tb
);
3340 #ifdef IFLA_VXLAN_MAX
3341 } else if(!strcmp(str
, "vxlan")) {
3342 return system_add_vxlan(name
, link
, tb
, false);
3343 } else if(!strcmp(str
, "vxlan6")) {
3344 return system_add_vxlan(name
, link
, tb
, true);
3347 } else if (!strcmp(str
, "ipip")) {
3348 return system_add_proto_tunnel(name
, IPPROTO_IPIP
, link
, tb
);