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>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2
10 * as published by the Free Software Foundation
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
19 #include <sys/socket.h>
20 #include <sys/ioctl.h>
22 #include <sys/syscall.h>
25 #include <net/if_arp.h>
27 #include <arpa/inet.h>
28 #include <netinet/in.h>
30 #include <linux/rtnetlink.h>
31 #include <linux/sockios.h>
33 #include <linux/if_addr.h>
34 #include <linux/if_link.h>
35 #include <linux/if_vlan.h>
36 #include <linux/if_bridge.h>
37 #include <linux/if_tunnel.h>
38 #include <linux/ip6_tunnel.h>
39 #include <linux/ethtool.h>
40 #include <linux/fib_rules.h>
41 #include <linux/version.h>
43 #ifndef RTN_FAILED_POLICY
44 #define RTN_FAILED_POLICY 12
47 #ifndef IFA_F_NOPREFIXROUTE
48 #define IFA_F_NOPREFIXROUTE 0x200
52 #define IFA_FLAGS (IFA_MULTICAST + 1)
62 #include <netlink/msg.h>
63 #include <netlink/attr.h>
64 #include <netlink/socket.h>
65 #include <libubox/uloop.h>
72 struct uloop_fd uloop
;
77 static int sock_ioctl
= -1;
78 static struct nl_sock
*sock_rtnl
= NULL
;
80 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
);
81 static void handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
);
83 static char dev_buf
[256];
86 handler_nl_event(struct uloop_fd
*u
, unsigned int events
)
88 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
90 socklen_t errlen
= sizeof(err
);
93 nl_recvmsgs_default(ev
->sock
);
97 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
102 // Increase rx buffer size on netlink socket
104 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
107 // Request full dump since some info got dropped
108 struct rtgenmsg msg
= { .rtgen_family
= AF_UNSPEC
};
109 nl_send_simple(ev
->sock
, RTM_GETLINK
, NLM_F_DUMP
, &msg
, sizeof(msg
));
119 uloop_fd_delete(&ev
->uloop
);
123 static struct nl_sock
*
124 create_socket(int protocol
, int groups
)
126 struct nl_sock
*sock
;
128 sock
= nl_socket_alloc();
133 nl_join_groups(sock
, groups
);
135 if (nl_connect(sock
, protocol
))
142 create_raw_event_socket(struct event_socket
*ev
, int protocol
, int groups
,
143 uloop_fd_handler cb
, int flags
)
145 ev
->sock
= create_socket(protocol
, groups
);
149 ev
->uloop
.fd
= nl_socket_get_fd(ev
->sock
);
151 if (uloop_fd_add(&ev
->uloop
, ULOOP_READ
|flags
))
158 create_event_socket(struct event_socket
*ev
, int protocol
,
159 int (*cb
)(struct nl_msg
*msg
, void *arg
))
161 if (!create_raw_event_socket(ev
, protocol
, 0, handler_nl_event
, ULOOP_ERROR_CB
))
164 // Install the valid custom callback handler
165 nl_socket_modify_cb(ev
->sock
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, NULL
);
167 // Disable sequence number checking on event sockets
168 nl_socket_disable_seq_check(ev
->sock
);
170 // Increase rx buffer size to 65K on event sockets
172 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
179 system_rtn_aton(const char *src
, unsigned int *dst
)
184 if (!strcmp(src
, "local"))
186 else if (!strcmp(src
, "nat"))
188 else if (!strcmp(src
, "broadcast"))
190 else if (!strcmp(src
, "anycast"))
192 else if (!strcmp(src
, "multicast"))
194 else if (!strcmp(src
, "prohibit"))
196 else if (!strcmp(src
, "unreachable"))
198 else if (!strcmp(src
, "blackhole"))
200 else if (!strcmp(src
, "xresolve"))
202 else if (!strcmp(src
, "unicast"))
204 else if (!strcmp(src
, "throw"))
206 else if (!strcmp(src
, "failed_policy"))
207 n
= RTN_FAILED_POLICY
;
209 n
= strtoul(src
, &e
, 0);
210 if (!e
|| *e
|| e
== src
|| n
> 255)
219 system_tos_aton(const char *src
, unsigned *dst
)
223 *dst
= strtoul(src
, &e
, 16);
224 if (e
== src
|| *e
|| *dst
> 255)
230 int system_init(void)
232 static struct event_socket rtnl_event
;
233 static struct event_socket hotplug_event
;
235 sock_ioctl
= socket(AF_LOCAL
, SOCK_DGRAM
, 0);
236 system_fd_set_cloexec(sock_ioctl
);
238 // Prepare socket for routing / address control
239 sock_rtnl
= create_socket(NETLINK_ROUTE
, 0);
243 if (!create_event_socket(&rtnl_event
, NETLINK_ROUTE
, cb_rtnl_event
))
246 if (!create_raw_event_socket(&hotplug_event
, NETLINK_KOBJECT_UEVENT
, 1,
247 handle_hotplug_event
, 0))
250 // Receive network link events form kernel
251 nl_socket_add_membership(rtnl_event
.sock
, RTNLGRP_LINK
);
256 static void system_set_sysctl(const char *path
, const char *val
)
260 fd
= open(path
, O_WRONLY
);
264 if (write(fd
, val
, strlen(val
))) {}
268 static void system_set_dev_sysctl(const char *path
, const char *device
, const char *val
)
270 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
271 system_set_sysctl(dev_buf
, val
);
274 static void system_set_disable_ipv6(struct device
*dev
, const char *val
)
276 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev
->ifname
, val
);
279 static void system_set_rpfilter(struct device
*dev
, const char *val
)
281 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter", dev
->ifname
, val
);
284 static void system_set_acceptlocal(struct device
*dev
, const char *val
)
286 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local", dev
->ifname
, val
);
289 static void system_set_igmpversion(struct device
*dev
, const char *val
)
291 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version", dev
->ifname
, val
);
294 static void system_set_mldversion(struct device
*dev
, const char *val
)
296 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version", dev
->ifname
, val
);
299 static void system_set_neigh4reachabletime(struct device
*dev
, const char *val
)
301 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
304 static void system_set_neigh6reachabletime(struct device
*dev
, const char *val
)
306 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
309 static void system_set_neigh4gcstaletime(struct device
*dev
, const char *val
)
311 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time", dev
->ifname
, val
);
314 static void system_set_neigh6gcstaletime(struct device
*dev
, const char *val
)
316 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time", dev
->ifname
, val
);
319 static void system_set_dadtransmits(struct device
*dev
, const char *val
)
321 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits", dev
->ifname
, val
);
324 static void system_bridge_set_multicast_to_unicast(struct device
*dev
, const char *val
)
326 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_to_unicast", dev
->ifname
, val
);
329 static void system_bridge_set_hairpin_mode(struct device
*dev
, const char *val
)
331 system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev
->ifname
, val
);
334 static void system_bridge_set_multicast_router(struct device
*dev
, const char *val
, bool bridge
)
336 system_set_dev_sysctl(bridge
? "/sys/class/net/%s/bridge/multicast_router" :
337 "/sys/class/net/%s/brport/multicast_router",
341 static void system_bridge_set_robustness(struct device
*dev
, const char *val
)
343 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_count",
345 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_count",
349 static void system_bridge_set_query_interval(struct device
*dev
, const char *val
)
351 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_interval",
355 static void system_bridge_set_query_response_interval(struct device
*dev
, const char *val
)
357 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_response_interval",
361 static void system_bridge_set_last_member_interval(struct device
*dev
, const char *val
)
363 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_interval",
367 static void system_bridge_set_membership_interval(struct device
*dev
, const char *val
)
369 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_membership_interval",
373 static void system_bridge_set_other_querier_timeout(struct device
*dev
, const char *val
)
375 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier_interval",
379 static void system_bridge_set_startup_query_interval(struct device
*dev
, const char *val
)
381 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_interval",
385 static void system_bridge_set_learning(struct device
*dev
, const char *val
)
387 system_set_dev_sysctl("/sys/class/net/%s/brport/learning", dev
->ifname
, val
);
390 static void system_bridge_set_unicast_flood(struct device
*dev
, const char *val
)
392 system_set_dev_sysctl("/sys/class/net/%s/brport/unicast_flood", dev
->ifname
, val
);
395 static int system_get_sysctl(const char *path
, char *buf
, const size_t buf_sz
)
397 int fd
= -1, ret
= -1;
399 fd
= open(path
, O_RDONLY
);
403 ssize_t len
= read(fd
, buf
, buf_sz
- 1);
417 system_get_dev_sysctl(const char *path
, const char *device
, char *buf
, const size_t buf_sz
)
419 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
420 return system_get_sysctl(dev_buf
, buf
, buf_sz
);
423 static int system_get_disable_ipv6(struct device
*dev
, char *buf
, const size_t buf_sz
)
425 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
426 dev
->ifname
, buf
, buf_sz
);
429 static int system_get_rpfilter(struct device
*dev
, char *buf
, const size_t buf_sz
)
431 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
432 dev
->ifname
, buf
, buf_sz
);
435 static int system_get_acceptlocal(struct device
*dev
, char *buf
, const size_t buf_sz
)
437 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
438 dev
->ifname
, buf
, buf_sz
);
441 static int system_get_igmpversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
443 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
444 dev
->ifname
, buf
, buf_sz
);
447 static int system_get_mldversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
449 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
450 dev
->ifname
, buf
, buf_sz
);
453 static int system_get_neigh4reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
455 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
456 dev
->ifname
, buf
, buf_sz
);
459 static int system_get_neigh6reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
461 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
462 dev
->ifname
, buf
, buf_sz
);
465 static int system_get_neigh4gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
467 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time",
468 dev
->ifname
, buf
, buf_sz
);
471 static int system_get_neigh6gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
473 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time",
474 dev
->ifname
, buf
, buf_sz
);
477 static int system_get_dadtransmits(struct device
*dev
, char *buf
, const size_t buf_sz
)
479 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
480 dev
->ifname
, buf
, buf_sz
);
483 // Evaluate netlink messages
484 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
486 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
487 struct nlattr
*nla
[__IFLA_MAX
];
491 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
494 nlmsg_parse(nh
, sizeof(struct ifinfomsg
), nla
, __IFLA_MAX
- 1, NULL
);
495 if (!nla
[IFLA_IFNAME
])
498 struct device
*dev
= device_find(nla_data(nla
[IFLA_IFNAME
]));
502 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev
->ifname
, buf
, sizeof(buf
)))
503 link_state
= strtoul(buf
, NULL
, 0);
505 device_set_link(dev
, link_state
? true : false);
512 handle_hotplug_msg(char *data
, int size
)
514 const char *subsystem
= NULL
, *interface
= NULL
;
515 char *cur
, *end
, *sep
;
520 if (!strncmp(data
, "add@", 4))
522 else if (!strncmp(data
, "remove@", 7))
527 skip
= strlen(data
) + 1;
530 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
531 skip
= strlen(cur
) + 1;
533 sep
= strchr(cur
, '=');
538 if (!strcmp(cur
, "INTERFACE"))
540 else if (!strcmp(cur
, "SUBSYSTEM")) {
542 if (strcmp(subsystem
, "net") != 0)
545 if (subsystem
&& interface
)
551 dev
= device_find(interface
);
555 if (dev
->type
!= &simple_device_type
)
558 if (add
&& system_if_force_external(dev
->ifname
))
561 device_set_present(dev
, add
);
565 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
567 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
568 struct sockaddr_nl nla
;
569 unsigned char *buf
= NULL
;
572 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
574 handle_hotplug_msg((char *) buf
, size
);
580 static int system_rtnl_call(struct nl_msg
*msg
)
584 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
590 return nl_wait_for_ack(sock_rtnl
);
593 int system_bridge_delbr(struct device
*bridge
)
595 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
598 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
602 memset(&ifr
, 0, sizeof(ifr
));
604 ifr
.ifr_ifindex
= dev
->ifindex
;
607 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
));
608 return ioctl(sock_ioctl
, cmd
, &ifr
);
611 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
615 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
616 if (stat(buf
, &st
) < 0)
622 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
628 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
629 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
633 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
641 path
= strrchr(buf
, '/');
649 system_bridge_set_wireless(struct device
*bridge
, struct device
*dev
)
651 bool mcast_to_ucast
= dev
->wireless_ap
;
654 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_TO_UNICAST
&&
655 !bridge
->settings
.multicast_to_unicast
)
656 mcast_to_ucast
= false;
658 if (!mcast_to_ucast
|| dev
->wireless_isolate
)
661 system_bridge_set_multicast_to_unicast(dev
, mcast_to_ucast
? "1" : "0");
662 system_bridge_set_hairpin_mode(dev
, hairpin
? "1" : "0");
665 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
671 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
672 if (!oldbr
|| strcmp(oldbr
, bridge
->ifname
) != 0)
673 ret
= system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
676 system_bridge_set_wireless(bridge
, dev
);
678 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
679 snprintf(buf
, sizeof(buf
), "%i", dev
->settings
.multicast_router
);
680 system_bridge_set_multicast_router(dev
, buf
, false);
683 if (dev
->settings
.flags
& DEV_OPT_LEARNING
&&
684 !dev
->settings
.learning
)
685 system_bridge_set_learning(dev
, "0");
687 if (dev
->settings
.flags
& DEV_OPT_UNICAST_FLOOD
&&
688 !dev
->settings
.unicast_flood
)
689 system_bridge_set_unicast_flood(dev
, "0");
694 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
696 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
699 int system_if_resolve(struct device
*dev
)
702 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
703 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
704 return ifr
.ifr_ifindex
;
709 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
713 memset(&ifr
, 0, sizeof(ifr
));
714 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
));
715 ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
);
716 ifr
.ifr_flags
|= add
;
717 ifr
.ifr_flags
&= ~rem
;
718 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
730 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
732 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
734 return ifa
->ifa_index
== ifindex
;
737 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
739 struct rtmsg
*r
= NLMSG_DATA(hdr
);
740 struct nlattr
*tb
[__RTA_MAX
];
742 if (r
->rtm_protocol
== RTPROT_KERNEL
&&
743 r
->rtm_family
== AF_INET6
)
746 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
750 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
753 static bool check_rule(struct nlmsghdr
*hdr
, int ifindex
)
758 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
760 struct clear_data
*clr
= arg
;
761 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
762 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
768 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
775 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
782 if (hdr
->nlmsg_type
!= RTM_NEWRULE
)
791 if (!cb(hdr
, clr
->dev
? clr
->dev
->ifindex
: 0))
794 if (type
== RTM_DELRULE
)
795 D(SYSTEM
, "Remove a rule\n");
797 D(SYSTEM
, "Remove %s from device %s\n",
798 type
== RTM_DELADDR
? "an address" : "a route",
800 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
801 hdr
= nlmsg_hdr(clr
->msg
);
802 hdr
->nlmsg_type
= type
;
803 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
805 nl_socket_disable_auto_ack(sock_rtnl
);
806 nl_send_auto_complete(sock_rtnl
, clr
->msg
);
807 nl_socket_enable_auto_ack(sock_rtnl
);
813 cb_finish_event(struct nl_msg
*msg
, void *arg
)
821 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
824 *pending
= err
->error
;
829 system_if_clear_entries(struct device
*dev
, int type
, int af
)
831 struct clear_data clr
;
832 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
835 .rtm_flags
= RTM_F_CLONED
,
837 int flags
= NLM_F_DUMP
;
846 clr
.size
= sizeof(struct rtgenmsg
);
849 clr
.size
= sizeof(struct rtmsg
);
858 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
862 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
863 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
864 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
865 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
867 nl_send_auto_complete(sock_rtnl
, clr
.msg
);
869 nl_recvmsgs(sock_rtnl
, cb
);
877 * Clear bridge (membership) state and bring down device
879 void system_if_clear_state(struct device
*dev
)
881 static char buf
[256];
884 device_set_ifindex(dev
, system_if_resolve(dev
));
885 if (dev
->external
|| !dev
->ifindex
)
888 system_if_flags(dev
->ifname
, 0, IFF_UP
);
890 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
891 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
892 system_bridge_delbr(dev
);
896 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
898 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
899 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
902 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
903 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
904 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
905 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
906 system_set_disable_ipv6(dev
, "0");
909 static inline unsigned long
910 sec_to_jiffies(int val
)
912 return (unsigned long) val
* 100;
915 static void system_bridge_conf_multicast_deps(struct device
*bridge
,
916 struct bridge_config
*cfg
,
922 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
||
923 cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
||
924 cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
925 val
= cfg
->robustness
* cfg
->query_interval
+
926 cfg
->query_response_interval
;
928 snprintf(buf
, buf_len
, "%i", val
);
929 system_bridge_set_membership_interval(bridge
, buf
);
931 val
= cfg
->robustness
* cfg
->query_interval
+
932 cfg
->query_response_interval
/ 2;
934 snprintf(buf
, buf_len
, "%i", val
);
935 system_bridge_set_other_querier_timeout(bridge
, buf
);
938 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
939 val
= cfg
->query_interval
/ 4;
941 snprintf(buf
, buf_len
, "%i", val
);
942 system_bridge_set_startup_query_interval(bridge
, buf
);
946 static void system_bridge_conf_multicast(struct device
*bridge
,
947 struct bridge_config
*cfg
,
951 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
952 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
954 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
955 bridge
->ifname
, cfg
->multicast_querier
? "1" : "0");
957 snprintf(buf
, buf_len
, "%i", cfg
->hash_max
);
958 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
959 bridge
->ifname
, buf
);
961 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
962 snprintf(buf
, buf_len
, "%i", bridge
->settings
.multicast_router
);
963 system_bridge_set_multicast_router(bridge
, buf
, true);
966 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
) {
967 snprintf(buf
, buf_len
, "%i", cfg
->robustness
);
968 system_bridge_set_robustness(bridge
, buf
);
971 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
972 snprintf(buf
, buf_len
, "%i", cfg
->query_interval
);
973 system_bridge_set_query_interval(bridge
, buf
);
976 if (cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
977 snprintf(buf
, buf_len
, "%i", cfg
->query_response_interval
);
978 system_bridge_set_query_response_interval(bridge
, buf
);
981 if (cfg
->flags
& BRIDGE_OPT_LAST_MEMBER_INTERVAL
) {
982 snprintf(buf
, buf_len
, "%i", cfg
->last_member_interval
);
983 system_bridge_set_last_member_interval(bridge
, buf
);
986 system_bridge_conf_multicast_deps(bridge
, cfg
, buf
, buf_len
);
989 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
992 unsigned long args
[4] = {};
994 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
997 args
[0] = BRCTL_SET_BRIDGE_STP_STATE
;
998 args
[1] = !!cfg
->stp
;
999 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1001 args
[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY
;
1002 args
[1] = sec_to_jiffies(cfg
->forward_delay
);
1003 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1005 system_bridge_conf_multicast(bridge
, cfg
, buf
, sizeof(buf
));
1007 args
[0] = BRCTL_SET_BRIDGE_PRIORITY
;
1008 args
[1] = cfg
->priority
;
1009 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1011 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
1012 args
[0] = BRCTL_SET_AGEING_TIME
;
1013 args
[1] = sec_to_jiffies(cfg
->ageing_time
);
1014 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1017 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
1018 args
[0] = BRCTL_SET_BRIDGE_HELLO_TIME
;
1019 args
[1] = sec_to_jiffies(cfg
->hello_time
);
1020 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1023 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
1024 args
[0] = BRCTL_SET_BRIDGE_MAX_AGE
;
1025 args
[1] = sec_to_jiffies(cfg
->max_age
);
1026 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1032 int system_macvlan_add(struct device
*macvlan
, struct device
*dev
, struct macvlan_config
*cfg
)
1035 struct nlattr
*linkinfo
, *data
;
1036 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
1038 static const struct {
1040 enum macvlan_mode val
;
1042 { "private", MACVLAN_MODE_PRIVATE
},
1043 { "vepa", MACVLAN_MODE_VEPA
},
1044 { "bridge", MACVLAN_MODE_BRIDGE
},
1045 { "passthru", MACVLAN_MODE_PASSTHRU
},
1048 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1053 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1055 if (cfg
->flags
& MACVLAN_OPT_MACADDR
)
1056 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1057 nla_put_string(msg
, IFLA_IFNAME
, macvlan
->ifname
);
1058 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1060 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1061 goto nla_put_failure
;
1063 nla_put_string(msg
, IFLA_INFO_KIND
, "macvlan");
1065 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1066 goto nla_put_failure
;
1069 for (i
= 0; i
< ARRAY_SIZE(modes
); i
++) {
1070 if (strcmp(cfg
->mode
, modes
[i
].name
) != 0)
1073 nla_put_u32(msg
, IFLA_MACVLAN_MODE
, modes
[i
].val
);
1078 nla_nest_end(msg
, data
);
1079 nla_nest_end(msg
, linkinfo
);
1081 rv
= system_rtnl_call(msg
);
1083 D(SYSTEM
, "Error adding macvlan '%s' over '%s': %d\n", macvlan
->ifname
, dev
->ifname
, rv
);
1092 static int system_link_del(const char *ifname
)
1095 struct ifinfomsg iim
= {
1096 .ifi_family
= AF_UNSPEC
,
1100 msg
= nlmsg_alloc_simple(RTM_DELLINK
, NLM_F_REQUEST
);
1105 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1106 nla_put_string(msg
, IFLA_IFNAME
, ifname
);
1107 return system_rtnl_call(msg
);
1110 int system_macvlan_del(struct device
*macvlan
)
1112 return system_link_del(macvlan
->ifname
);
1115 static int system_vlan(struct device
*dev
, int id
)
1117 struct vlan_ioctl_args ifr
= {
1118 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
1119 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
1122 ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1125 ifr
.cmd
= DEL_VLAN_CMD
;
1128 ifr
.cmd
= ADD_VLAN_CMD
;
1131 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
1132 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1135 int system_vlan_add(struct device
*dev
, int id
)
1137 return system_vlan(dev
, id
);
1140 int system_vlan_del(struct device
*dev
)
1142 return system_vlan(dev
, -1);
1145 int system_vlandev_add(struct device
*vlandev
, struct device
*dev
, struct vlandev_config
*cfg
)
1148 struct nlattr
*linkinfo
, *data
;
1149 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
};
1152 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1157 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1158 nla_put_string(msg
, IFLA_IFNAME
, vlandev
->ifname
);
1159 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1161 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1162 goto nla_put_failure
;
1164 nla_put_string(msg
, IFLA_INFO_KIND
, "vlan");
1166 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1167 goto nla_put_failure
;
1169 nla_put_u16(msg
, IFLA_VLAN_ID
, cfg
->vid
);
1171 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1172 nla_put_u16(msg
, IFLA_VLAN_PROTOCOL
, htons(cfg
->proto
));
1174 if(cfg
->proto
== VLAN_PROTO_8021AD
)
1175 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
);
1178 nla_nest_end(msg
, data
);
1179 nla_nest_end(msg
, linkinfo
);
1181 rv
= system_rtnl_call(msg
);
1183 D(SYSTEM
, "Error adding vlandev '%s' over '%s': %d\n", vlandev
->ifname
, dev
->ifname
, rv
);
1192 int system_vlandev_del(struct device
*vlandev
)
1194 return system_link_del(vlandev
->ifname
);
1198 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
1203 memset(&ifr
, 0, sizeof(ifr
));
1204 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1206 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
1207 s
->mtu
= ifr
.ifr_mtu
;
1208 s
->flags
|= DEV_OPT_MTU
;
1211 s
->mtu6
= system_update_ipv6_mtu(dev
, 0);
1213 s
->flags
|= DEV_OPT_MTU6
;
1215 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
1216 s
->txqueuelen
= ifr
.ifr_qlen
;
1217 s
->flags
|= DEV_OPT_TXQUEUELEN
;
1220 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
1221 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
1222 s
->flags
|= DEV_OPT_MACADDR
;
1225 if (!system_get_disable_ipv6(dev
, buf
, sizeof(buf
))) {
1226 s
->ipv6
= !strtoul(buf
, NULL
, 0);
1227 s
->flags
|= DEV_OPT_IPV6
;
1230 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) == 0) {
1231 s
->promisc
= ifr
.ifr_flags
& IFF_PROMISC
;
1232 s
->flags
|= DEV_OPT_PROMISC
;
1234 s
->multicast
= ifr
.ifr_flags
& IFF_MULTICAST
;
1235 s
->flags
|= DEV_OPT_MULTICAST
;
1238 if (!system_get_rpfilter(dev
, buf
, sizeof(buf
))) {
1239 s
->rpfilter
= strtoul(buf
, NULL
, 0);
1240 s
->flags
|= DEV_OPT_RPFILTER
;
1243 if (!system_get_acceptlocal(dev
, buf
, sizeof(buf
))) {
1244 s
->acceptlocal
= strtoul(buf
, NULL
, 0);
1245 s
->flags
|= DEV_OPT_ACCEPTLOCAL
;
1248 if (!system_get_igmpversion(dev
, buf
, sizeof(buf
))) {
1249 s
->igmpversion
= strtoul(buf
, NULL
, 0);
1250 s
->flags
|= DEV_OPT_IGMPVERSION
;
1253 if (!system_get_mldversion(dev
, buf
, sizeof(buf
))) {
1254 s
->mldversion
= strtoul(buf
, NULL
, 0);
1255 s
->flags
|= DEV_OPT_MLDVERSION
;
1258 if (!system_get_neigh4reachabletime(dev
, buf
, sizeof(buf
))) {
1259 s
->neigh4reachabletime
= strtoul(buf
, NULL
, 0);
1260 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1263 if (!system_get_neigh6reachabletime(dev
, buf
, sizeof(buf
))) {
1264 s
->neigh6reachabletime
= strtoul(buf
, NULL
, 0);
1265 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1268 if (!system_get_neigh4gcstaletime(dev
, buf
, sizeof(buf
))) {
1269 s
->neigh4gcstaletime
= strtoul(buf
, NULL
, 0);
1270 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1273 if (!system_get_neigh6gcstaletime(dev
, buf
, sizeof(buf
))) {
1274 s
->neigh6gcstaletime
= strtoul(buf
, NULL
, 0);
1275 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1278 if (!system_get_dadtransmits(dev
, buf
, sizeof(buf
))) {
1279 s
->dadtransmits
= strtoul(buf
, NULL
, 0);
1280 s
->flags
|= DEV_OPT_DADTRANSMITS
;
1285 system_if_set_rps_xps_val(const char *path
, int val
)
1291 if (glob(path
, 0, NULL
, &gl
))
1294 snprintf(val_buf
, sizeof(val_buf
), "%x", val
);
1295 for (i
= 0; i
< gl
.gl_pathc
; i
++)
1296 system_set_sysctl(gl
.gl_pathv
[i
], val_buf
);
1302 system_if_apply_rps_xps(struct device
*dev
, struct device_settings
*s
)
1304 long n_cpus
= sysconf(_SC_NPROCESSORS_ONLN
);
1310 val
= (1 << n_cpus
) - 1;
1311 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/rps_cpus", dev
->ifname
);
1312 system_if_set_rps_xps_val(dev_buf
, s
->rps
? val
: 0);
1314 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/xps_cpus", dev
->ifname
);
1315 system_if_set_rps_xps_val(dev_buf
, s
->xps
? val
: 0);
1319 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
, unsigned int apply_mask
)
1324 memset(&ifr
, 0, sizeof(ifr
));
1325 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1326 if (s
->flags
& DEV_OPT_MTU
& apply_mask
) {
1327 ifr
.ifr_mtu
= s
->mtu
;
1328 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
1329 s
->flags
&= ~DEV_OPT_MTU
;
1331 if (s
->flags
& DEV_OPT_MTU6
& apply_mask
) {
1332 system_update_ipv6_mtu(dev
, s
->mtu6
);
1334 if (s
->flags
& DEV_OPT_TXQUEUELEN
& apply_mask
) {
1335 ifr
.ifr_qlen
= s
->txqueuelen
;
1336 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
1337 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
1339 if ((s
->flags
& DEV_OPT_MACADDR
& apply_mask
) && !dev
->external
) {
1340 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
1341 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
1342 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
1343 s
->flags
&= ~DEV_OPT_MACADDR
;
1345 if (s
->flags
& DEV_OPT_IPV6
& apply_mask
)
1346 system_set_disable_ipv6(dev
, s
->ipv6
? "0" : "1");
1347 if (s
->flags
& DEV_OPT_PROMISC
& apply_mask
) {
1348 if (system_if_flags(dev
->ifname
, s
->promisc
? IFF_PROMISC
: 0,
1349 !s
->promisc
? IFF_PROMISC
: 0) < 0)
1350 s
->flags
&= ~DEV_OPT_PROMISC
;
1352 if (s
->flags
& DEV_OPT_RPFILTER
& apply_mask
) {
1353 snprintf(buf
, sizeof(buf
), "%d", s
->rpfilter
);
1354 system_set_rpfilter(dev
, buf
);
1356 if (s
->flags
& DEV_OPT_ACCEPTLOCAL
& apply_mask
)
1357 system_set_acceptlocal(dev
, s
->acceptlocal
? "1" : "0");
1358 if (s
->flags
& DEV_OPT_IGMPVERSION
& apply_mask
) {
1359 snprintf(buf
, sizeof(buf
), "%d", s
->igmpversion
);
1360 system_set_igmpversion(dev
, buf
);
1362 if (s
->flags
& DEV_OPT_MLDVERSION
& apply_mask
) {
1363 snprintf(buf
, sizeof(buf
), "%d", s
->mldversion
);
1364 system_set_mldversion(dev
, buf
);
1366 if (s
->flags
& DEV_OPT_NEIGHREACHABLETIME
& apply_mask
) {
1367 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4reachabletime
);
1368 system_set_neigh4reachabletime(dev
, buf
);
1369 snprintf(buf
, sizeof(buf
), "%d", s
->neigh6reachabletime
);
1370 system_set_neigh6reachabletime(dev
, buf
);
1372 if (s
->flags
& DEV_OPT_NEIGHGCSTALETIME
& apply_mask
) {
1373 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4gcstaletime
);
1374 system_set_neigh4gcstaletime(dev
, buf
);
1375 snprintf(buf
, sizeof(buf
), "%d", s
->neigh6gcstaletime
);
1376 system_set_neigh6gcstaletime(dev
, buf
);
1378 if (s
->flags
& DEV_OPT_DADTRANSMITS
& apply_mask
) {
1379 snprintf(buf
, sizeof(buf
), "%d", s
->dadtransmits
);
1380 system_set_dadtransmits(dev
, buf
);
1382 if (s
->flags
& DEV_OPT_MULTICAST
& apply_mask
) {
1383 if (system_if_flags(dev
->ifname
, s
->multicast
? IFF_MULTICAST
: 0,
1384 !s
->multicast
? IFF_MULTICAST
: 0) < 0)
1385 s
->flags
&= ~DEV_OPT_MULTICAST
;
1388 system_if_apply_rps_xps(dev
, s
);
1391 int system_if_up(struct device
*dev
)
1393 system_if_get_settings(dev
, &dev
->orig_settings
);
1394 /* Only keep orig settings based on what needs to be set */
1395 dev
->orig_settings
.valid_flags
= dev
->orig_settings
.flags
;
1396 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
1397 system_if_apply_settings(dev
, &dev
->settings
, dev
->settings
.flags
);
1398 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
1401 int system_if_down(struct device
*dev
)
1403 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
1404 system_if_apply_settings(dev
, &dev
->orig_settings
, dev
->orig_settings
.flags
);
1408 struct if_check_data
{
1414 #ifndef IFF_LOWER_UP
1415 #define IFF_LOWER_UP 0x10000
1418 static int cb_if_check_valid(struct nl_msg
*msg
, void *arg
)
1420 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
1421 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
1422 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1424 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
1427 device_set_present(chk
->dev
, ifi
->ifi_index
> 0 ? true : false);
1428 device_set_link(chk
->dev
, ifi
->ifi_flags
& IFF_LOWER_UP
? true : false);
1433 static int cb_if_check_ack(struct nl_msg
*msg
, void *arg
)
1435 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1440 static int cb_if_check_error(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
1442 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1444 device_set_present(chk
->dev
, false);
1445 device_set_link(chk
->dev
, false);
1446 chk
->pending
= err
->error
;
1451 int system_if_check(struct device
*dev
)
1453 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1455 struct ifinfomsg ifi
= {
1456 .ifi_family
= AF_UNSPEC
,
1459 struct if_check_data chk
= {
1465 msg
= nlmsg_alloc_simple(RTM_GETLINK
, 0);
1469 if (nlmsg_append(msg
, &ifi
, sizeof(ifi
), 0) ||
1470 nla_put_string(msg
, IFLA_IFNAME
, dev
->ifname
))
1473 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_if_check_valid
, &chk
);
1474 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, cb_if_check_ack
, &chk
);
1475 nl_cb_err(cb
, NL_CB_CUSTOM
, cb_if_check_error
, &chk
);
1477 nl_send_auto_complete(sock_rtnl
, msg
);
1478 while (chk
.pending
> 0)
1479 nl_recvmsgs(sock_rtnl
, cb
);
1491 system_if_get_parent(struct device
*dev
)
1493 char buf
[64], *devname
;
1494 int ifindex
, iflink
, len
;
1497 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
1498 f
= fopen(buf
, "r");
1502 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
1509 iflink
= strtoul(buf
, NULL
, 0);
1510 ifindex
= system_if_resolve(dev
);
1511 if (!iflink
|| iflink
== ifindex
)
1514 devname
= if_indextoname(iflink
, buf
);
1518 return device_get(devname
, true);
1522 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
1528 fd
= openat(dir_fd
, file
, O_RDONLY
);
1533 len
= read(fd
, buf
, len
- 1);
1537 } else if (len
> 0) {
1540 c
= strchr(buf
, '\n');
1553 read_uint64_file(int dir_fd
, const char *file
, uint64_t *val
)
1558 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
1560 *val
= strtoull(buf
, NULL
, 0);
1565 /* Assume advertised flags == supported flags */
1566 static const struct {
1569 } ethtool_link_modes
[] = {
1570 { ADVERTISED_10baseT_Half
, "10H" },
1571 { ADVERTISED_10baseT_Full
, "10F" },
1572 { ADVERTISED_100baseT_Half
, "100H" },
1573 { ADVERTISED_100baseT_Full
, "100F" },
1574 { ADVERTISED_1000baseT_Half
, "1000H" },
1575 { ADVERTISED_1000baseT_Full
, "1000F" },
1578 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
1581 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
1582 if (mask
& ethtool_link_modes
[i
].mask
)
1583 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
1588 system_if_force_external(const char *ifname
)
1593 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/phy80211", ifname
);
1594 return stat(buf
, &s
) == 0;
1598 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
1600 struct ethtool_cmd ecmd
;
1606 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s", dev
->ifname
);
1607 dir_fd
= open(buf
, O_DIRECTORY
);
1609 memset(&ecmd
, 0, sizeof(ecmd
));
1610 memset(&ifr
, 0, sizeof(ifr
));
1611 strcpy(ifr
.ifr_name
, dev
->ifname
);
1612 ifr
.ifr_data
= (caddr_t
) &ecmd
;
1613 ecmd
.cmd
= ETHTOOL_GSET
;
1615 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
1616 c
= blobmsg_open_array(b
, "link-advertising");
1617 system_add_link_modes(b
, ecmd
.advertising
);
1618 blobmsg_close_array(b
, c
);
1620 c
= blobmsg_open_array(b
, "link-supported");
1621 system_add_link_modes(b
, ecmd
.supported
);
1622 blobmsg_close_array(b
, c
);
1624 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
1625 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
1626 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
1627 blobmsg_add_string_buffer(b
);
1635 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
1637 const char *const counters
[] = {
1638 "collisions", "rx_frame_errors", "tx_compressed",
1639 "multicast", "rx_length_errors", "tx_dropped",
1640 "rx_bytes", "rx_missed_errors", "tx_errors",
1641 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1642 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1643 "rx_dropped", "tx_aborted_errors", "tx_packets",
1644 "rx_errors", "tx_bytes", "tx_window_errors",
1645 "rx_fifo_errors", "tx_carrier_errors",
1652 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
1653 stats_dir
= open(buf
, O_DIRECTORY
);
1657 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
1658 if (read_uint64_file(stats_dir
, counters
[i
], &val
))
1659 blobmsg_add_u64(b
, counters
[i
], val
);
1665 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
1667 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
1668 int alen
= v4
? 4 : 16;
1669 unsigned int flags
= 0;
1670 struct ifaddrmsg ifa
= {
1671 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1672 .ifa_prefixlen
= addr
->mask
,
1673 .ifa_index
= dev
->ifindex
,
1677 if (cmd
== RTM_NEWADDR
)
1678 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1680 msg
= nlmsg_alloc_simple(cmd
, flags
);
1684 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
1685 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
1687 if (addr
->broadcast
)
1688 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
1689 if (addr
->point_to_point
)
1690 nla_put_u32(msg
, IFA_ADDRESS
, addr
->point_to_point
);
1692 time_t now
= system_get_rtime();
1693 struct ifa_cacheinfo cinfo
= {0xffffffffU
, 0xffffffffU
, 0, 0};
1695 if (addr
->preferred_until
) {
1696 int64_t preferred
= addr
->preferred_until
- now
;
1699 else if (preferred
> UINT32_MAX
)
1700 preferred
= UINT32_MAX
;
1702 cinfo
.ifa_prefered
= preferred
;
1705 if (addr
->valid_until
) {
1706 int64_t valid
= addr
->valid_until
- now
;
1711 else if (valid
> UINT32_MAX
)
1714 cinfo
.ifa_valid
= valid
;
1717 nla_put(msg
, IFA_CACHEINFO
, sizeof(cinfo
), &cinfo
);
1719 if (cmd
== RTM_NEWADDR
&& (addr
->flags
& DEVADDR_OFFLINK
))
1720 nla_put_u32(msg
, IFA_FLAGS
, IFA_F_NOPREFIXROUTE
);
1723 return system_rtnl_call(msg
);
1726 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
1728 return system_addr(dev
, addr
, RTM_NEWADDR
);
1731 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
1733 return system_addr(dev
, addr
, RTM_DELADDR
);
1736 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
1738 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
1740 unsigned int flags
= 0;
1743 have_gw
= !!route
->nexthop
.in
.s_addr
;
1745 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
1746 route
->nexthop
.in6
.s6_addr32
[1] ||
1747 route
->nexthop
.in6
.s6_addr32
[2] ||
1748 route
->nexthop
.in6
.s6_addr32
[3];
1750 unsigned int table
= (route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))
1751 ? route
->table
: RT_TABLE_MAIN
;
1753 struct rtmsg rtm
= {
1754 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1755 .rtm_dst_len
= route
->mask
,
1756 .rtm_src_len
= route
->sourcemask
,
1757 .rtm_table
= (table
< 256) ? table
: RT_TABLE_UNSPEC
,
1758 .rtm_protocol
= (route
->flags
& DEVADDR_KERNEL
) ? RTPROT_KERNEL
: RTPROT_STATIC
,
1759 .rtm_scope
= RT_SCOPE_NOWHERE
,
1760 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
1761 .rtm_flags
= (route
->flags
& DEVROUTE_ONLINK
) ? RTNH_F_ONLINK
: 0,
1765 if (cmd
== RTM_NEWROUTE
) {
1766 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1768 if (!dev
) { // Add null-route
1769 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1770 rtm
.rtm_type
= RTN_UNREACHABLE
;
1773 rtm
.rtm_scope
= (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
1776 if (route
->flags
& DEVROUTE_TYPE
) {
1777 rtm
.rtm_type
= route
->type
;
1778 if (!(route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))) {
1779 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_BROADCAST
||
1780 rtm
.rtm_type
== RTN_NAT
|| rtm
.rtm_type
== RTN_ANYCAST
)
1781 rtm
.rtm_table
= RT_TABLE_LOCAL
;
1784 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_NAT
) {
1785 rtm
.rtm_scope
= RT_SCOPE_HOST
;
1786 } else if (rtm
.rtm_type
== RTN_BROADCAST
|| rtm
.rtm_type
== RTN_MULTICAST
||
1787 rtm
.rtm_type
== RTN_ANYCAST
) {
1788 rtm
.rtm_scope
= RT_SCOPE_LINK
;
1789 } else if (rtm
.rtm_type
== RTN_BLACKHOLE
|| rtm
.rtm_type
== RTN_UNREACHABLE
||
1790 rtm
.rtm_type
== RTN_PROHIBIT
|| rtm
.rtm_type
== RTN_FAILED_POLICY
) {
1791 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1796 msg
= nlmsg_alloc_simple(cmd
, flags
);
1800 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
1803 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
1805 if (route
->sourcemask
) {
1806 if (rtm
.rtm_family
== AF_INET
)
1807 nla_put(msg
, RTA_PREFSRC
, alen
, &route
->source
);
1809 nla_put(msg
, RTA_SRC
, alen
, &route
->source
);
1812 if (route
->metric
> 0)
1813 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
1816 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
1819 nla_put_u32(msg
, RTA_OIF
, dev
->ifindex
);
1822 nla_put_u32(msg
, RTA_TABLE
, table
);
1824 if (route
->flags
& DEVROUTE_MTU
) {
1825 struct nlattr
*metrics
;
1827 if (!(metrics
= nla_nest_start(msg
, RTA_METRICS
)))
1828 goto nla_put_failure
;
1830 nla_put_u32(msg
, RTAX_MTU
, route
->mtu
);
1832 nla_nest_end(msg
, metrics
);
1835 return system_rtnl_call(msg
);
1842 int system_add_route(struct device
*dev
, struct device_route
*route
)
1844 return system_rt(dev
, route
, RTM_NEWROUTE
);
1847 int system_del_route(struct device
*dev
, struct device_route
*route
)
1849 return system_rt(dev
, route
, RTM_DELROUTE
);
1852 int system_flush_routes(void)
1854 const char *names
[] = {
1855 "/proc/sys/net/ipv4/route/flush",
1856 "/proc/sys/net/ipv6/route/flush"
1860 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
1861 fd
= open(names
[i
], O_WRONLY
);
1865 if (write(fd
, "-1", 2)) {}
1871 bool system_resolve_rt_type(const char *type
, unsigned int *id
)
1873 return system_rtn_aton(type
, id
);
1876 bool system_resolve_rt_table(const char *name
, unsigned int *id
)
1880 unsigned int n
, table
= RT_TABLE_UNSPEC
;
1882 /* first try to parse table as number */
1883 if ((n
= strtoul(name
, &e
, 0)) > 0 && !*e
)
1886 /* handle well known aliases */
1887 else if (!strcmp(name
, "default"))
1888 table
= RT_TABLE_DEFAULT
;
1889 else if (!strcmp(name
, "main"))
1890 table
= RT_TABLE_MAIN
;
1891 else if (!strcmp(name
, "local"))
1892 table
= RT_TABLE_LOCAL
;
1894 /* try to look up name in /etc/iproute2/rt_tables */
1895 else if ((f
= fopen("/etc/iproute2/rt_tables", "r")) != NULL
)
1897 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
)
1899 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
1902 n
= strtoul(e
, NULL
, 10);
1903 e
= strtok(NULL
, " \t\n");
1905 if (e
&& !strcmp(e
, name
))
1915 if (table
== RT_TABLE_UNSPEC
)
1922 bool system_is_default_rt_table(unsigned int id
)
1924 return (id
== RT_TABLE_MAIN
);
1927 bool system_resolve_rpfilter(const char *filter
, unsigned int *id
)
1932 if (!strcmp(filter
, "strict"))
1934 else if (!strcmp(filter
, "loose"))
1937 n
= strtoul(filter
, &e
, 0);
1938 if (*e
|| e
== filter
|| n
> 2)
1946 static int system_iprule(struct iprule
*rule
, int cmd
)
1948 int alen
= ((rule
->flags
& IPRULE_FAMILY
) == IPRULE_INET4
) ? 4 : 16;
1951 struct rtmsg rtm
= {
1952 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1953 .rtm_protocol
= RTPROT_STATIC
,
1954 .rtm_scope
= RT_SCOPE_UNIVERSE
,
1955 .rtm_table
= RT_TABLE_UNSPEC
,
1956 .rtm_type
= RTN_UNSPEC
,
1960 if (cmd
== RTM_NEWRULE
)
1961 rtm
.rtm_type
= RTN_UNICAST
;
1964 rtm
.rtm_flags
|= FIB_RULE_INVERT
;
1966 if (rule
->flags
& IPRULE_SRC
)
1967 rtm
.rtm_src_len
= rule
->src_mask
;
1969 if (rule
->flags
& IPRULE_DEST
)
1970 rtm
.rtm_dst_len
= rule
->dest_mask
;
1972 if (rule
->flags
& IPRULE_TOS
)
1973 rtm
.rtm_tos
= rule
->tos
;
1975 if (rule
->flags
& IPRULE_LOOKUP
) {
1976 if (rule
->lookup
< 256)
1977 rtm
.rtm_table
= rule
->lookup
;
1980 if (rule
->flags
& IPRULE_ACTION
)
1981 rtm
.rtm_type
= rule
->action
;
1982 else if (rule
->flags
& IPRULE_GOTO
)
1983 rtm
.rtm_type
= FR_ACT_GOTO
;
1984 else if (!(rule
->flags
& (IPRULE_LOOKUP
| IPRULE_ACTION
| IPRULE_GOTO
)))
1985 rtm
.rtm_type
= FR_ACT_NOP
;
1987 msg
= nlmsg_alloc_simple(cmd
, NLM_F_REQUEST
);
1992 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
1994 if (rule
->flags
& IPRULE_IN
)
1995 nla_put(msg
, FRA_IFNAME
, strlen(rule
->in_dev
) + 1, rule
->in_dev
);
1997 if (rule
->flags
& IPRULE_OUT
)
1998 nla_put(msg
, FRA_OIFNAME
, strlen(rule
->out_dev
) + 1, rule
->out_dev
);
2000 if (rule
->flags
& IPRULE_SRC
)
2001 nla_put(msg
, FRA_SRC
, alen
, &rule
->src_addr
);
2003 if (rule
->flags
& IPRULE_DEST
)
2004 nla_put(msg
, FRA_DST
, alen
, &rule
->dest_addr
);
2006 if (rule
->flags
& IPRULE_PRIORITY
)
2007 nla_put_u32(msg
, FRA_PRIORITY
, rule
->priority
);
2008 else if (cmd
== RTM_NEWRULE
)
2009 nla_put_u32(msg
, FRA_PRIORITY
, rule
->order
);
2011 if (rule
->flags
& IPRULE_FWMARK
)
2012 nla_put_u32(msg
, FRA_FWMARK
, rule
->fwmark
);
2014 if (rule
->flags
& IPRULE_FWMASK
)
2015 nla_put_u32(msg
, FRA_FWMASK
, rule
->fwmask
);
2017 if (rule
->flags
& IPRULE_LOOKUP
) {
2018 if (rule
->lookup
>= 256)
2019 nla_put_u32(msg
, FRA_TABLE
, rule
->lookup
);
2022 if (rule
->flags
& IPRULE_GOTO
)
2023 nla_put_u32(msg
, FRA_GOTO
, rule
->gotoid
);
2025 return system_rtnl_call(msg
);
2028 int system_add_iprule(struct iprule
*rule
)
2030 return system_iprule(rule
, RTM_NEWRULE
);
2033 int system_del_iprule(struct iprule
*rule
)
2035 return system_iprule(rule
, RTM_DELRULE
);
2038 int system_flush_iprules(void)
2043 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET
);
2044 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET6
);
2046 memset(&rule
, 0, sizeof(rule
));
2049 rule
.flags
= IPRULE_INET4
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2052 rule
.lookup
= RT_TABLE_LOCAL
;
2053 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2055 rule
.priority
= 32766;
2056 rule
.lookup
= RT_TABLE_MAIN
;
2057 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2059 rule
.priority
= 32767;
2060 rule
.lookup
= RT_TABLE_DEFAULT
;
2061 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2064 rule
.flags
= IPRULE_INET6
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2067 rule
.lookup
= RT_TABLE_LOCAL
;
2068 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2070 rule
.priority
= 32766;
2071 rule
.lookup
= RT_TABLE_MAIN
;
2072 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2077 bool system_resolve_iprule_action(const char *action
, unsigned int *id
)
2079 return system_rtn_aton(action
, id
);
2082 time_t system_get_rtime(void)
2087 if (syscall(__NR_clock_gettime
, CLOCK_MONOTONIC
, &ts
) == 0)
2090 if (gettimeofday(&tv
, NULL
) == 0)
2097 #define IP_DF 0x4000
2100 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
2104 memset(&ifr
, 0, sizeof(ifr
));
2105 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
));
2106 ifr
.ifr_ifru
.ifru_data
= p
;
2107 return ioctl(sock_ioctl
, cmd
, &ifr
);
2110 #ifdef IFLA_IPTUN_MAX
2111 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
2112 static int system_add_gre_tunnel(const char *name
, const char *kind
,
2113 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2116 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2117 struct blob_attr
*cur
;
2118 uint32_t ikey
= 0, okey
= 0, flags
= 0, flowinfo
= 0;
2119 uint16_t iflags
= 0, oflags
= 0;
2121 int ret
= 0, ttl
= 64;
2123 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2127 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2128 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2130 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2136 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2137 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2144 nla_put_u32(nlm
, IFLA_GRE_LINK
, link
);
2146 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2147 ttl
= blobmsg_get_u32(cur
);
2149 nla_put_u8(nlm
, IFLA_GRE_TTL
, ttl
);
2151 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2152 char *str
= blobmsg_get_string(cur
);
2153 if (strcmp(str
, "inherit")) {
2156 if (!system_tos_aton(str
, &uval
)) {
2162 flowinfo
|= htonl(uval
<< 20) & IP6_FLOWINFO_TCLASS
;
2167 flags
|= IP6_TNL_F_USE_ORIG_TCLASS
;
2173 if ((cur
= tb
[TUNNEL_ATTR_INFO
]) && (blobmsg_type(cur
) == BLOBMSG_TYPE_STRING
)) {
2174 uint8_t icsum
, ocsum
, iseqno
, oseqno
;
2175 if (sscanf(blobmsg_get_string(cur
), "%u,%u,%hhu,%hhu,%hhu,%hhu",
2176 &ikey
, &okey
, &icsum
, &ocsum
, &iseqno
, &oseqno
) < 6) {
2201 struct in6_addr in6buf
;
2202 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2203 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2207 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(in6buf
), &in6buf
);
2210 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2211 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2215 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(in6buf
), &in6buf
);
2217 nla_put_u8(nlm
, IFLA_GRE_ENCAP_LIMIT
, 4);
2220 nla_put_u32(nlm
, IFLA_GRE_FLOWINFO
, flowinfo
);
2223 nla_put_u32(nlm
, IFLA_GRE_FLAGS
, flags
);
2225 struct in_addr inbuf
;
2228 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2229 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2233 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(inbuf
), &inbuf
);
2236 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2237 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2241 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(inbuf
), &inbuf
);
2243 if (IN_MULTICAST(ntohl(inbuf
.s_addr
))) {
2245 okey
= inbuf
.s_addr
;
2250 ikey
= inbuf
.s_addr
;
2256 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2257 set_df
= blobmsg_get_bool(cur
);
2259 /* ttl !=0 and nopmtudisc are incompatible */
2260 if (ttl
&& !set_df
) {
2265 nla_put_u8(nlm
, IFLA_GRE_PMTUDISC
, set_df
? 1 : 0);
2267 nla_put_u8(nlm
, IFLA_GRE_TOS
, tos
);
2271 nla_put_u16(nlm
, IFLA_GRE_OFLAGS
, oflags
);
2274 nla_put_u16(nlm
, IFLA_GRE_IFLAGS
, iflags
);
2277 nla_put_u32(nlm
, IFLA_GRE_OKEY
, okey
);
2280 nla_put_u32(nlm
, IFLA_GRE_IKEY
, ikey
);
2282 nla_nest_end(nlm
, infodata
);
2283 nla_nest_end(nlm
, linkinfo
);
2285 return system_rtnl_call(nlm
);
2294 static int system_add_vti_tunnel(const char *name
, const char *kind
,
2295 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2298 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2299 struct blob_attr
*cur
;
2300 uint32_t ikey
= 0, okey
= 0;
2303 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2307 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2308 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2310 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2316 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2317 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2324 nla_put_u32(nlm
, IFLA_VTI_LINK
, link
);
2326 if ((cur
= tb
[TUNNEL_ATTR_INFO
]) && (blobmsg_type(cur
) == BLOBMSG_TYPE_STRING
)) {
2327 if (sscanf(blobmsg_get_string(cur
), "%u,%u",
2328 &ikey
, &okey
) < 2) {
2335 struct in6_addr in6buf
;
2336 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2337 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2341 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(in6buf
), &in6buf
);
2344 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2345 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2349 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(in6buf
), &in6buf
);
2353 struct in_addr inbuf
;
2355 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2356 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2360 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(inbuf
), &inbuf
);
2363 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2364 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2368 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(inbuf
), &inbuf
);
2374 nla_put_u32(nlm
, IFLA_VTI_OKEY
, htonl(okey
));
2377 nla_put_u32(nlm
, IFLA_VTI_IKEY
, htonl(ikey
));
2379 nla_nest_end(nlm
, infodata
);
2380 nla_nest_end(nlm
, linkinfo
);
2382 return system_rtnl_call(nlm
);
2390 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
, const unsigned int link
, struct blob_attr
**tb
)
2392 struct blob_attr
*cur
;
2394 struct ip_tunnel_parm p
= {
2403 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
]) &&
2404 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.saddr
) < 1)
2407 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
]) &&
2408 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.daddr
) < 1)
2411 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2412 set_df
= blobmsg_get_bool(cur
);
2414 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2415 p
.iph
.ttl
= blobmsg_get_u32(cur
);
2417 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2418 char *str
= blobmsg_get_string(cur
);
2419 if (strcmp(str
, "inherit")) {
2422 if (!system_tos_aton(str
, &uval
))
2430 p
.iph
.frag_off
= set_df
? htons(IP_DF
) : 0;
2431 /* ttl !=0 and nopmtudisc are incompatible */
2432 if (p
.iph
.ttl
&& p
.iph
.frag_off
== 0)
2435 strncpy(p
.name
, name
, sizeof(p
.name
));
2437 switch (p
.iph
.protocol
) {
2439 return tunnel_ioctl("tunl0", SIOCADDTUNNEL
, &p
);
2441 return tunnel_ioctl("sit0", SIOCADDTUNNEL
, &p
);
2448 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
)
2450 struct blob_attr
*cur
;
2453 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2455 str
= blobmsg_data(cur
);
2457 if (!strcmp(str
, "greip") || !strcmp(str
, "gretapip") ||
2458 !strcmp(str
, "greip6") || !strcmp(str
, "gretapip6") ||
2459 !strcmp(str
, "vtiip") || !strcmp(str
, "vtiip6"))
2460 return system_link_del(name
);
2462 return tunnel_ioctl(name
, SIOCDELTUNNEL
, NULL
);
2465 int system_del_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2467 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2469 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2470 blob_data(attr
), blob_len(attr
));
2472 return __system_del_ip_tunnel(name
, tb
);
2475 int system_update_ipv6_mtu(struct device
*dev
, int mtu
)
2479 snprintf(buf
, sizeof(buf
), "/proc/sys/net/ipv6/conf/%s/mtu",
2482 int fd
= open(buf
, O_RDWR
);
2485 ssize_t len
= read(fd
, buf
, sizeof(buf
) - 1);
2492 if (write(fd
, buf
, snprintf(buf
, sizeof(buf
), "%i", mtu
)) > 0)
2501 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2503 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2504 struct blob_attr
*cur
;
2507 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2508 blob_data(attr
), blob_len(attr
));
2510 __system_del_ip_tunnel(name
, tb
);
2512 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2514 str
= blobmsg_data(cur
);
2516 unsigned int ttl
= 0;
2517 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
2518 ttl
= blobmsg_get_u32(cur
);
2523 unsigned int link
= 0;
2524 if ((cur
= tb
[TUNNEL_ATTR_LINK
])) {
2525 struct interface
*iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
2529 if (iface
->l3_dev
.dev
)
2530 link
= iface
->l3_dev
.dev
->ifindex
;
2533 if (!strcmp(str
, "sit")) {
2534 if (system_add_proto_tunnel(name
, IPPROTO_IPV6
, link
, tb
) < 0)
2538 if ((cur
= tb
[TUNNEL_ATTR_6RD_PREFIX
])) {
2540 struct ip_tunnel_6rd p6
;
2542 memset(&p6
, 0, sizeof(p6
));
2544 if (!parse_ip_and_netmask(AF_INET6
, blobmsg_data(cur
),
2545 &p6
.prefix
, &mask
) || mask
> 128)
2547 p6
.prefixlen
= mask
;
2549 if ((cur
= tb
[TUNNEL_ATTR_6RD_RELAY_PREFIX
])) {
2550 if (!parse_ip_and_netmask(AF_INET
, blobmsg_data(cur
),
2551 &p6
.relay_prefix
, &mask
) || mask
> 32)
2553 p6
.relay_prefixlen
= mask
;
2556 if (tunnel_ioctl(name
, SIOCADD6RD
, &p6
) < 0) {
2557 __system_del_ip_tunnel(name
, tb
);
2562 #ifdef IFLA_IPTUN_MAX
2563 } else if (!strcmp(str
, "ipip6")) {
2564 struct nl_msg
*nlm
= nlmsg_alloc_simple(RTM_NEWLINK
,
2565 NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2566 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
};
2572 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2573 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2576 nla_put_u32(nlm
, IFLA_LINK
, link
);
2578 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2583 nla_put_string(nlm
, IFLA_INFO_KIND
, "ip6tnl");
2584 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2591 nla_put_u32(nlm
, IFLA_IPTUN_LINK
, link
);
2593 nla_put_u8(nlm
, IFLA_IPTUN_PROTO
, IPPROTO_IPIP
);
2594 nla_put_u8(nlm
, IFLA_IPTUN_TTL
, (ttl
) ? ttl
: 64);
2595 nla_put_u8(nlm
, IFLA_IPTUN_ENCAP_LIMIT
, 4);
2597 struct in6_addr in6buf
;
2598 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2599 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2603 nla_put(nlm
, IFLA_IPTUN_LOCAL
, sizeof(in6buf
), &in6buf
);
2606 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2607 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2611 nla_put(nlm
, IFLA_IPTUN_REMOTE
, sizeof(in6buf
), &in6buf
);
2614 #ifdef IFLA_IPTUN_FMR_MAX
2615 if ((cur
= tb
[TUNNEL_ATTR_FMRS
])) {
2616 struct nlattr
*fmrs
= nla_nest_start(nlm
, IFLA_IPTUN_FMRS
);
2618 struct blob_attr
*fmr
;
2619 unsigned rem
, fmrcnt
= 0;
2620 blobmsg_for_each_attr(fmr
, cur
, rem
) {
2621 if (blobmsg_type(fmr
) != BLOBMSG_TYPE_STRING
)
2624 unsigned ip4len
, ip6len
, ealen
, offset
= 6;
2628 if (sscanf(blobmsg_get_string(fmr
), "%47[^/]/%u,%15[^/]/%u,%u,%u",
2629 ip6buf
, &ip6len
, ip4buf
, &ip4len
, &ealen
, &offset
) < 5) {
2634 struct in6_addr ip6prefix
;
2635 struct in_addr ip4prefix
;
2636 if (inet_pton(AF_INET6
, ip6buf
, &ip6prefix
) != 1 ||
2637 inet_pton(AF_INET
, ip4buf
, &ip4prefix
) != 1) {
2642 struct nlattr
*rule
= nla_nest_start(nlm
, ++fmrcnt
);
2644 nla_put(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX
, sizeof(ip6prefix
), &ip6prefix
);
2645 nla_put(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX
, sizeof(ip4prefix
), &ip4prefix
);
2646 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX_LEN
, ip6len
);
2647 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX_LEN
, ip4len
);
2648 nla_put_u8(nlm
, IFLA_IPTUN_FMR_EA_LEN
, ealen
);
2649 nla_put_u8(nlm
, IFLA_IPTUN_FMR_OFFSET
, offset
);
2651 nla_nest_end(nlm
, rule
);
2654 nla_nest_end(nlm
, fmrs
);
2658 nla_nest_end(nlm
, infodata
);
2659 nla_nest_end(nlm
, linkinfo
);
2661 return system_rtnl_call(nlm
);
2665 } else if (!strcmp(str
, "greip")) {
2666 return system_add_gre_tunnel(name
, "gre", link
, tb
, false);
2667 } else if (!strcmp(str
, "gretapip")) {
2668 return system_add_gre_tunnel(name
, "gretap", link
, tb
, false);
2669 } else if (!strcmp(str
, "greip6")) {
2670 return system_add_gre_tunnel(name
, "ip6gre", link
, tb
, true);
2671 } else if (!strcmp(str
, "gretapip6")) {
2672 return system_add_gre_tunnel(name
, "ip6gretap", link
, tb
, true);
2674 } else if (!strcmp(str
, "vtiip")) {
2675 return system_add_vti_tunnel(name
, "vti", link
, tb
, false);
2676 } else if (!strcmp(str
, "vtiip6")) {
2677 return system_add_vti_tunnel(name
, "vti6", link
, tb
, true);
2680 } else if (!strcmp(str
, "ipip")) {
2681 return system_add_proto_tunnel(name
, IPPROTO_IPIP
, link
, tb
);