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)
61 #include <netlink/msg.h>
62 #include <netlink/attr.h>
63 #include <netlink/socket.h>
64 #include <libubox/uloop.h>
71 struct uloop_fd uloop
;
76 static int sock_ioctl
= -1;
77 static struct nl_sock
*sock_rtnl
= NULL
;
79 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
);
80 static void handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
);
82 static char dev_buf
[256];
85 handler_nl_event(struct uloop_fd
*u
, unsigned int events
)
87 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
89 socklen_t errlen
= sizeof(err
);
92 nl_recvmsgs_default(ev
->sock
);
96 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
101 // Increase rx buffer size on netlink socket
103 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
106 // Request full dump since some info got dropped
107 struct rtgenmsg msg
= { .rtgen_family
= AF_UNSPEC
};
108 nl_send_simple(ev
->sock
, RTM_GETLINK
, NLM_F_DUMP
, &msg
, sizeof(msg
));
118 uloop_fd_delete(&ev
->uloop
);
122 static struct nl_sock
*
123 create_socket(int protocol
, int groups
)
125 struct nl_sock
*sock
;
127 sock
= nl_socket_alloc();
132 nl_join_groups(sock
, groups
);
134 if (nl_connect(sock
, protocol
))
141 create_raw_event_socket(struct event_socket
*ev
, int protocol
, int groups
,
142 uloop_fd_handler cb
, int flags
)
144 ev
->sock
= create_socket(protocol
, groups
);
148 ev
->uloop
.fd
= nl_socket_get_fd(ev
->sock
);
150 if (uloop_fd_add(&ev
->uloop
, ULOOP_READ
|flags
))
157 create_event_socket(struct event_socket
*ev
, int protocol
,
158 int (*cb
)(struct nl_msg
*msg
, void *arg
))
160 if (!create_raw_event_socket(ev
, protocol
, 0, handler_nl_event
, ULOOP_ERROR_CB
))
163 // Install the valid custom callback handler
164 nl_socket_modify_cb(ev
->sock
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, NULL
);
166 // Disable sequence number checking on event sockets
167 nl_socket_disable_seq_check(ev
->sock
);
169 // Increase rx buffer size to 65K on event sockets
171 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
178 system_rtn_aton(const char *src
, unsigned int *dst
)
183 if (!strcmp(src
, "local"))
185 else if (!strcmp(src
, "nat"))
187 else if (!strcmp(src
, "broadcast"))
189 else if (!strcmp(src
, "anycast"))
191 else if (!strcmp(src
, "multicast"))
193 else if (!strcmp(src
, "prohibit"))
195 else if (!strcmp(src
, "unreachable"))
197 else if (!strcmp(src
, "blackhole"))
199 else if (!strcmp(src
, "xresolve"))
201 else if (!strcmp(src
, "unicast"))
203 else if (!strcmp(src
, "throw"))
205 else if (!strcmp(src
, "failed_policy"))
206 n
= RTN_FAILED_POLICY
;
208 n
= strtoul(src
, &e
, 0);
209 if (!e
|| *e
|| e
== src
|| n
> 255)
218 system_tos_aton(const char *src
, unsigned *dst
)
222 *dst
= strtoul(src
, &e
, 16);
223 if (e
== src
|| *e
|| *dst
> 255)
229 int system_init(void)
231 static struct event_socket rtnl_event
;
232 static struct event_socket hotplug_event
;
234 sock_ioctl
= socket(AF_LOCAL
, SOCK_DGRAM
, 0);
235 system_fd_set_cloexec(sock_ioctl
);
237 // Prepare socket for routing / address control
238 sock_rtnl
= create_socket(NETLINK_ROUTE
, 0);
242 if (!create_event_socket(&rtnl_event
, NETLINK_ROUTE
, cb_rtnl_event
))
245 if (!create_raw_event_socket(&hotplug_event
, NETLINK_KOBJECT_UEVENT
, 1,
246 handle_hotplug_event
, 0))
249 // Receive network link events form kernel
250 nl_socket_add_membership(rtnl_event
.sock
, RTNLGRP_LINK
);
255 static void system_set_sysctl(const char *path
, const char *val
)
259 fd
= open(path
, O_WRONLY
);
263 if (write(fd
, val
, strlen(val
))) {}
267 static void system_set_dev_sysctl(const char *path
, const char *device
, const char *val
)
269 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
270 system_set_sysctl(dev_buf
, val
);
273 static void system_set_disable_ipv6(struct device
*dev
, const char *val
)
275 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev
->ifname
, val
);
278 static void system_set_rpfilter(struct device
*dev
, const char *val
)
280 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter", dev
->ifname
, val
);
283 static void system_set_acceptlocal(struct device
*dev
, const char *val
)
285 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local", dev
->ifname
, val
);
288 static void system_set_igmpversion(struct device
*dev
, const char *val
)
290 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version", dev
->ifname
, val
);
293 static void system_set_mldversion(struct device
*dev
, const char *val
)
295 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version", dev
->ifname
, val
);
298 static void system_set_neigh4reachabletime(struct device
*dev
, const char *val
)
300 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
303 static void system_set_neigh6reachabletime(struct device
*dev
, const char *val
)
305 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
308 static void system_set_neigh4gcstaletime(struct device
*dev
, const char *val
)
310 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time", dev
->ifname
, val
);
313 static void system_set_neigh6gcstaletime(struct device
*dev
, const char *val
)
315 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time", dev
->ifname
, val
);
318 static void system_set_dadtransmits(struct device
*dev
, const char *val
)
320 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits", dev
->ifname
, val
);
323 static void system_bridge_set_multicast_to_unicast(struct device
*dev
, const char *val
)
325 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_to_unicast", dev
->ifname
, val
);
328 static void system_bridge_set_multicast_fast_leave(struct device
*dev
, const char *val
)
330 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_fast_leave", dev
->ifname
, val
);
333 static void system_bridge_set_hairpin_mode(struct device
*dev
, const char *val
)
335 system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev
->ifname
, val
);
338 static void system_bridge_set_multicast_router(struct device
*dev
, const char *val
, bool bridge
)
340 system_set_dev_sysctl(bridge
? "/sys/class/net/%s/bridge/multicast_router" :
341 "/sys/class/net/%s/brport/multicast_router",
345 static void system_bridge_set_robustness(struct device
*dev
, const char *val
)
347 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_count",
349 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_count",
353 static void system_bridge_set_query_interval(struct device
*dev
, const char *val
)
355 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_interval",
359 static void system_bridge_set_query_response_interval(struct device
*dev
, const char *val
)
361 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_response_interval",
365 static void system_bridge_set_last_member_interval(struct device
*dev
, const char *val
)
367 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_interval",
371 static void system_bridge_set_membership_interval(struct device
*dev
, const char *val
)
373 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_membership_interval",
377 static void system_bridge_set_other_querier_timeout(struct device
*dev
, const char *val
)
379 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier_interval",
383 static void system_bridge_set_startup_query_interval(struct device
*dev
, const char *val
)
385 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_interval",
389 static void system_bridge_set_learning(struct device
*dev
, const char *val
)
391 system_set_dev_sysctl("/sys/class/net/%s/brport/learning", dev
->ifname
, val
);
394 static void system_bridge_set_unicast_flood(struct device
*dev
, const char *val
)
396 system_set_dev_sysctl("/sys/class/net/%s/brport/unicast_flood", dev
->ifname
, val
);
399 static void system_set_sendredirects(struct device
*dev
, const char *val
)
401 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects", dev
->ifname
, val
);
404 static int system_get_sysctl(const char *path
, char *buf
, const size_t buf_sz
)
406 int fd
= -1, ret
= -1;
408 fd
= open(path
, O_RDONLY
);
412 ssize_t len
= read(fd
, buf
, buf_sz
- 1);
426 system_get_dev_sysctl(const char *path
, const char *device
, char *buf
, const size_t buf_sz
)
428 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
429 return system_get_sysctl(dev_buf
, buf
, buf_sz
);
432 static int system_get_disable_ipv6(struct device
*dev
, char *buf
, const size_t buf_sz
)
434 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
435 dev
->ifname
, buf
, buf_sz
);
438 static int system_get_rpfilter(struct device
*dev
, char *buf
, const size_t buf_sz
)
440 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
441 dev
->ifname
, buf
, buf_sz
);
444 static int system_get_acceptlocal(struct device
*dev
, char *buf
, const size_t buf_sz
)
446 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
447 dev
->ifname
, buf
, buf_sz
);
450 static int system_get_igmpversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
452 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
453 dev
->ifname
, buf
, buf_sz
);
456 static int system_get_mldversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
458 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
459 dev
->ifname
, buf
, buf_sz
);
462 static int system_get_neigh4reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
464 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
465 dev
->ifname
, buf
, buf_sz
);
468 static int system_get_neigh6reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
470 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
471 dev
->ifname
, buf
, buf_sz
);
474 static int system_get_neigh4gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
476 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time",
477 dev
->ifname
, buf
, buf_sz
);
480 static int system_get_neigh6gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
482 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time",
483 dev
->ifname
, buf
, buf_sz
);
486 static int system_get_dadtransmits(struct device
*dev
, char *buf
, const size_t buf_sz
)
488 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
489 dev
->ifname
, buf
, buf_sz
);
492 static int system_get_sendredirects(struct device
*dev
, char *buf
, const size_t buf_sz
)
494 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects",
495 dev
->ifname
, buf
, buf_sz
);
498 // Evaluate netlink messages
499 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
501 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
502 struct nlattr
*nla
[__IFLA_MAX
];
506 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
509 nlmsg_parse(nh
, sizeof(struct ifinfomsg
), nla
, __IFLA_MAX
- 1, NULL
);
510 if (!nla
[IFLA_IFNAME
])
513 struct device
*dev
= device_find(nla_data(nla
[IFLA_IFNAME
]));
517 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev
->ifname
, buf
, sizeof(buf
)))
518 link_state
= strtoul(buf
, NULL
, 0);
520 device_set_link(dev
, link_state
? true : false);
527 handle_hotplug_msg(char *data
, int size
)
529 const char *subsystem
= NULL
, *interface
= NULL
;
530 char *cur
, *end
, *sep
;
535 if (!strncmp(data
, "add@", 4))
537 else if (!strncmp(data
, "remove@", 7))
542 skip
= strlen(data
) + 1;
545 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
546 skip
= strlen(cur
) + 1;
548 sep
= strchr(cur
, '=');
553 if (!strcmp(cur
, "INTERFACE"))
555 else if (!strcmp(cur
, "SUBSYSTEM")) {
557 if (strcmp(subsystem
, "net") != 0)
560 if (subsystem
&& interface
)
566 dev
= device_find(interface
);
570 if (dev
->type
!= &simple_device_type
)
573 if (add
&& system_if_force_external(dev
->ifname
))
576 device_set_present(dev
, add
);
580 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
582 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
583 struct sockaddr_nl nla
;
584 unsigned char *buf
= NULL
;
587 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
589 handle_hotplug_msg((char *) buf
, size
);
595 static int system_rtnl_call(struct nl_msg
*msg
)
599 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
605 return nl_wait_for_ack(sock_rtnl
);
608 int system_bridge_delbr(struct device
*bridge
)
610 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
613 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
617 memset(&ifr
, 0, sizeof(ifr
));
619 ifr
.ifr_ifindex
= dev
->ifindex
;
622 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
));
623 return ioctl(sock_ioctl
, cmd
, &ifr
);
626 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
630 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
631 if (stat(buf
, &st
) < 0)
637 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
643 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
644 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
648 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
656 path
= strrchr(buf
, '/');
664 system_bridge_set_wireless(struct device
*bridge
, struct device
*dev
)
666 bool mcast_to_ucast
= dev
->wireless_ap
;
669 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_TO_UNICAST
&&
670 !bridge
->settings
.multicast_to_unicast
)
671 mcast_to_ucast
= false;
673 if (!mcast_to_ucast
|| dev
->wireless_isolate
)
676 system_bridge_set_multicast_to_unicast(dev
, mcast_to_ucast
? "1" : "0");
677 system_bridge_set_hairpin_mode(dev
, hairpin
? "1" : "0");
680 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
686 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
687 if (!oldbr
|| strcmp(oldbr
, bridge
->ifname
) != 0)
688 ret
= system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
691 system_bridge_set_wireless(bridge
, dev
);
693 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
694 snprintf(buf
, sizeof(buf
), "%i", dev
->settings
.multicast_router
);
695 system_bridge_set_multicast_router(dev
, buf
, false);
698 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_FAST_LEAVE
&&
699 dev
->settings
.multicast_fast_leave
)
700 system_bridge_set_multicast_fast_leave(dev
, "1");
702 if (dev
->settings
.flags
& DEV_OPT_LEARNING
&&
703 !dev
->settings
.learning
)
704 system_bridge_set_learning(dev
, "0");
706 if (dev
->settings
.flags
& DEV_OPT_UNICAST_FLOOD
&&
707 !dev
->settings
.unicast_flood
)
708 system_bridge_set_unicast_flood(dev
, "0");
713 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
715 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
718 int system_if_resolve(struct device
*dev
)
721 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
722 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
723 return ifr
.ifr_ifindex
;
728 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
732 memset(&ifr
, 0, sizeof(ifr
));
733 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
));
734 ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
);
735 ifr
.ifr_flags
|= add
;
736 ifr
.ifr_flags
&= ~rem
;
737 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
749 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
751 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
753 return ifa
->ifa_index
== ifindex
;
756 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
758 struct rtmsg
*r
= NLMSG_DATA(hdr
);
759 struct nlattr
*tb
[__RTA_MAX
];
761 if (r
->rtm_protocol
== RTPROT_KERNEL
&&
762 r
->rtm_family
== AF_INET6
)
765 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
769 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
772 static bool check_rule(struct nlmsghdr
*hdr
, int ifindex
)
777 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
779 struct clear_data
*clr
= arg
;
780 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
781 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
787 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
794 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
801 if (hdr
->nlmsg_type
!= RTM_NEWRULE
)
810 if (!cb(hdr
, clr
->dev
? clr
->dev
->ifindex
: 0))
813 if (type
== RTM_DELRULE
)
814 D(SYSTEM
, "Remove a rule\n");
816 D(SYSTEM
, "Remove %s from device %s\n",
817 type
== RTM_DELADDR
? "an address" : "a route",
819 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
820 hdr
= nlmsg_hdr(clr
->msg
);
821 hdr
->nlmsg_type
= type
;
822 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
824 nl_socket_disable_auto_ack(sock_rtnl
);
825 nl_send_auto_complete(sock_rtnl
, clr
->msg
);
826 nl_socket_enable_auto_ack(sock_rtnl
);
832 cb_finish_event(struct nl_msg
*msg
, void *arg
)
840 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
843 *pending
= err
->error
;
848 system_if_clear_entries(struct device
*dev
, int type
, int af
)
850 struct clear_data clr
;
851 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
854 .rtm_flags
= RTM_F_CLONED
,
856 int flags
= NLM_F_DUMP
;
865 clr
.size
= sizeof(struct rtgenmsg
);
868 clr
.size
= sizeof(struct rtmsg
);
877 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
881 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
882 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
883 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
884 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
886 nl_send_auto_complete(sock_rtnl
, clr
.msg
);
888 nl_recvmsgs(sock_rtnl
, cb
);
896 * Clear bridge (membership) state and bring down device
898 void system_if_clear_state(struct device
*dev
)
900 static char buf
[256];
903 device_set_ifindex(dev
, system_if_resolve(dev
));
904 if (dev
->external
|| !dev
->ifindex
)
907 system_if_flags(dev
->ifname
, 0, IFF_UP
);
909 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
910 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
911 system_bridge_delbr(dev
);
915 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
917 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
918 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
921 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
922 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
923 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
924 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
925 system_set_disable_ipv6(dev
, "0");
928 static inline unsigned long
929 sec_to_jiffies(int val
)
931 return (unsigned long) val
* 100;
934 static void system_bridge_conf_multicast_deps(struct device
*bridge
,
935 struct bridge_config
*cfg
,
941 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
||
942 cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
||
943 cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
944 val
= cfg
->robustness
* cfg
->query_interval
+
945 cfg
->query_response_interval
;
947 snprintf(buf
, buf_len
, "%i", val
);
948 system_bridge_set_membership_interval(bridge
, buf
);
950 val
= cfg
->robustness
* cfg
->query_interval
+
951 cfg
->query_response_interval
/ 2;
953 snprintf(buf
, buf_len
, "%i", val
);
954 system_bridge_set_other_querier_timeout(bridge
, buf
);
957 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
958 val
= cfg
->query_interval
/ 4;
960 snprintf(buf
, buf_len
, "%i", val
);
961 system_bridge_set_startup_query_interval(bridge
, buf
);
965 static void system_bridge_conf_multicast(struct device
*bridge
,
966 struct bridge_config
*cfg
,
970 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
971 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
973 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
974 bridge
->ifname
, cfg
->multicast_querier
? "1" : "0");
976 snprintf(buf
, buf_len
, "%i", cfg
->hash_max
);
977 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
978 bridge
->ifname
, buf
);
980 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
981 snprintf(buf
, buf_len
, "%i", bridge
->settings
.multicast_router
);
982 system_bridge_set_multicast_router(bridge
, buf
, true);
985 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
) {
986 snprintf(buf
, buf_len
, "%i", cfg
->robustness
);
987 system_bridge_set_robustness(bridge
, buf
);
990 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
991 snprintf(buf
, buf_len
, "%i", cfg
->query_interval
);
992 system_bridge_set_query_interval(bridge
, buf
);
995 if (cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
996 snprintf(buf
, buf_len
, "%i", cfg
->query_response_interval
);
997 system_bridge_set_query_response_interval(bridge
, buf
);
1000 if (cfg
->flags
& BRIDGE_OPT_LAST_MEMBER_INTERVAL
) {
1001 snprintf(buf
, buf_len
, "%i", cfg
->last_member_interval
);
1002 system_bridge_set_last_member_interval(bridge
, buf
);
1005 system_bridge_conf_multicast_deps(bridge
, cfg
, buf
, buf_len
);
1008 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
1011 unsigned long args
[4] = {};
1013 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
1016 args
[0] = BRCTL_SET_BRIDGE_STP_STATE
;
1017 args
[1] = !!cfg
->stp
;
1018 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1020 args
[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY
;
1021 args
[1] = sec_to_jiffies(cfg
->forward_delay
);
1022 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1024 system_bridge_conf_multicast(bridge
, cfg
, buf
, sizeof(buf
));
1026 args
[0] = BRCTL_SET_BRIDGE_PRIORITY
;
1027 args
[1] = cfg
->priority
;
1028 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1030 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
1031 args
[0] = BRCTL_SET_AGEING_TIME
;
1032 args
[1] = sec_to_jiffies(cfg
->ageing_time
);
1033 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1036 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
1037 args
[0] = BRCTL_SET_BRIDGE_HELLO_TIME
;
1038 args
[1] = sec_to_jiffies(cfg
->hello_time
);
1039 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1042 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
1043 args
[0] = BRCTL_SET_BRIDGE_MAX_AGE
;
1044 args
[1] = sec_to_jiffies(cfg
->max_age
);
1045 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1051 int system_macvlan_add(struct device
*macvlan
, struct device
*dev
, struct macvlan_config
*cfg
)
1054 struct nlattr
*linkinfo
, *data
;
1055 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
1057 static const struct {
1059 enum macvlan_mode val
;
1061 { "private", MACVLAN_MODE_PRIVATE
},
1062 { "vepa", MACVLAN_MODE_VEPA
},
1063 { "bridge", MACVLAN_MODE_BRIDGE
},
1064 { "passthru", MACVLAN_MODE_PASSTHRU
},
1067 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1072 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1074 if (cfg
->flags
& MACVLAN_OPT_MACADDR
)
1075 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1076 nla_put_string(msg
, IFLA_IFNAME
, macvlan
->ifname
);
1077 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1079 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1080 goto nla_put_failure
;
1082 nla_put_string(msg
, IFLA_INFO_KIND
, "macvlan");
1084 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1085 goto nla_put_failure
;
1088 for (i
= 0; i
< ARRAY_SIZE(modes
); i
++) {
1089 if (strcmp(cfg
->mode
, modes
[i
].name
) != 0)
1092 nla_put_u32(msg
, IFLA_MACVLAN_MODE
, modes
[i
].val
);
1097 nla_nest_end(msg
, data
);
1098 nla_nest_end(msg
, linkinfo
);
1100 rv
= system_rtnl_call(msg
);
1102 D(SYSTEM
, "Error adding macvlan '%s' over '%s': %d\n", macvlan
->ifname
, dev
->ifname
, rv
);
1111 static int system_link_del(const char *ifname
)
1114 struct ifinfomsg iim
= {
1115 .ifi_family
= AF_UNSPEC
,
1119 msg
= nlmsg_alloc_simple(RTM_DELLINK
, NLM_F_REQUEST
);
1124 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1125 nla_put_string(msg
, IFLA_IFNAME
, ifname
);
1126 return system_rtnl_call(msg
);
1129 int system_macvlan_del(struct device
*macvlan
)
1131 return system_link_del(macvlan
->ifname
);
1134 static int system_vlan(struct device
*dev
, int id
)
1136 struct vlan_ioctl_args ifr
= {
1137 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
1138 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
1141 ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1144 ifr
.cmd
= DEL_VLAN_CMD
;
1147 ifr
.cmd
= ADD_VLAN_CMD
;
1150 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
1151 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1154 int system_vlan_add(struct device
*dev
, int id
)
1156 return system_vlan(dev
, id
);
1159 int system_vlan_del(struct device
*dev
)
1161 return system_vlan(dev
, -1);
1164 int system_vlandev_add(struct device
*vlandev
, struct device
*dev
, struct vlandev_config
*cfg
)
1167 struct nlattr
*linkinfo
, *data
;
1168 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
};
1171 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1176 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1177 nla_put_string(msg
, IFLA_IFNAME
, vlandev
->ifname
);
1178 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1180 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1181 goto nla_put_failure
;
1183 nla_put_string(msg
, IFLA_INFO_KIND
, "vlan");
1185 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1186 goto nla_put_failure
;
1188 nla_put_u16(msg
, IFLA_VLAN_ID
, cfg
->vid
);
1190 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1191 nla_put_u16(msg
, IFLA_VLAN_PROTOCOL
, htons(cfg
->proto
));
1193 if(cfg
->proto
== VLAN_PROTO_8021AD
)
1194 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
);
1197 nla_nest_end(msg
, data
);
1198 nla_nest_end(msg
, linkinfo
);
1200 rv
= system_rtnl_call(msg
);
1202 D(SYSTEM
, "Error adding vlandev '%s' over '%s': %d\n", vlandev
->ifname
, dev
->ifname
, rv
);
1211 int system_vlandev_del(struct device
*vlandev
)
1213 return system_link_del(vlandev
->ifname
);
1217 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
1222 memset(&ifr
, 0, sizeof(ifr
));
1223 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1225 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
1226 s
->mtu
= ifr
.ifr_mtu
;
1227 s
->flags
|= DEV_OPT_MTU
;
1230 s
->mtu6
= system_update_ipv6_mtu(dev
, 0);
1232 s
->flags
|= DEV_OPT_MTU6
;
1234 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
1235 s
->txqueuelen
= ifr
.ifr_qlen
;
1236 s
->flags
|= DEV_OPT_TXQUEUELEN
;
1239 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
1240 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
1241 s
->flags
|= DEV_OPT_MACADDR
;
1244 if (!system_get_disable_ipv6(dev
, buf
, sizeof(buf
))) {
1245 s
->ipv6
= !strtoul(buf
, NULL
, 0);
1246 s
->flags
|= DEV_OPT_IPV6
;
1249 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) == 0) {
1250 s
->promisc
= ifr
.ifr_flags
& IFF_PROMISC
;
1251 s
->flags
|= DEV_OPT_PROMISC
;
1253 s
->multicast
= ifr
.ifr_flags
& IFF_MULTICAST
;
1254 s
->flags
|= DEV_OPT_MULTICAST
;
1257 if (!system_get_rpfilter(dev
, buf
, sizeof(buf
))) {
1258 s
->rpfilter
= strtoul(buf
, NULL
, 0);
1259 s
->flags
|= DEV_OPT_RPFILTER
;
1262 if (!system_get_acceptlocal(dev
, buf
, sizeof(buf
))) {
1263 s
->acceptlocal
= strtoul(buf
, NULL
, 0);
1264 s
->flags
|= DEV_OPT_ACCEPTLOCAL
;
1267 if (!system_get_igmpversion(dev
, buf
, sizeof(buf
))) {
1268 s
->igmpversion
= strtoul(buf
, NULL
, 0);
1269 s
->flags
|= DEV_OPT_IGMPVERSION
;
1272 if (!system_get_mldversion(dev
, buf
, sizeof(buf
))) {
1273 s
->mldversion
= strtoul(buf
, NULL
, 0);
1274 s
->flags
|= DEV_OPT_MLDVERSION
;
1277 if (!system_get_neigh4reachabletime(dev
, buf
, sizeof(buf
))) {
1278 s
->neigh4reachabletime
= strtoul(buf
, NULL
, 0);
1279 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1282 if (!system_get_neigh6reachabletime(dev
, buf
, sizeof(buf
))) {
1283 s
->neigh6reachabletime
= strtoul(buf
, NULL
, 0);
1284 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1287 if (!system_get_neigh4gcstaletime(dev
, buf
, sizeof(buf
))) {
1288 s
->neigh4gcstaletime
= strtoul(buf
, NULL
, 0);
1289 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1292 if (!system_get_neigh6gcstaletime(dev
, buf
, sizeof(buf
))) {
1293 s
->neigh6gcstaletime
= strtoul(buf
, NULL
, 0);
1294 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1297 if (!system_get_dadtransmits(dev
, buf
, sizeof(buf
))) {
1298 s
->dadtransmits
= strtoul(buf
, NULL
, 0);
1299 s
->flags
|= DEV_OPT_DADTRANSMITS
;
1302 if (!system_get_sendredirects(dev
, buf
, sizeof(buf
))) {
1303 s
->sendredirects
= strtoul(buf
, NULL
, 0);
1304 s
->flags
|= DEV_OPT_SENDREDIRECTS
;
1309 system_if_set_rps_xps_val(const char *path
, int val
)
1315 if (glob(path
, 0, NULL
, &gl
))
1318 snprintf(val_buf
, sizeof(val_buf
), "%x", val
);
1319 for (i
= 0; i
< gl
.gl_pathc
; i
++)
1320 system_set_sysctl(gl
.gl_pathv
[i
], val_buf
);
1326 system_if_apply_rps_xps(struct device
*dev
, struct device_settings
*s
)
1328 long n_cpus
= sysconf(_SC_NPROCESSORS_ONLN
);
1334 val
= (1 << n_cpus
) - 1;
1335 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/rps_cpus", dev
->ifname
);
1336 system_if_set_rps_xps_val(dev_buf
, s
->rps
? val
: 0);
1338 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/xps_cpus", dev
->ifname
);
1339 system_if_set_rps_xps_val(dev_buf
, s
->xps
? val
: 0);
1343 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
, unsigned int apply_mask
)
1348 memset(&ifr
, 0, sizeof(ifr
));
1349 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1350 if (s
->flags
& DEV_OPT_MTU
& apply_mask
) {
1351 ifr
.ifr_mtu
= s
->mtu
;
1352 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
1353 s
->flags
&= ~DEV_OPT_MTU
;
1355 if (s
->flags
& DEV_OPT_MTU6
& apply_mask
) {
1356 system_update_ipv6_mtu(dev
, s
->mtu6
);
1358 if (s
->flags
& DEV_OPT_TXQUEUELEN
& apply_mask
) {
1359 ifr
.ifr_qlen
= s
->txqueuelen
;
1360 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
1361 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
1363 if ((s
->flags
& DEV_OPT_MACADDR
& apply_mask
) && !dev
->external
) {
1364 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
1365 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
1366 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
1367 s
->flags
&= ~DEV_OPT_MACADDR
;
1369 if (s
->flags
& DEV_OPT_IPV6
& apply_mask
)
1370 system_set_disable_ipv6(dev
, s
->ipv6
? "0" : "1");
1371 if (s
->flags
& DEV_OPT_PROMISC
& apply_mask
) {
1372 if (system_if_flags(dev
->ifname
, s
->promisc
? IFF_PROMISC
: 0,
1373 !s
->promisc
? IFF_PROMISC
: 0) < 0)
1374 s
->flags
&= ~DEV_OPT_PROMISC
;
1376 if (s
->flags
& DEV_OPT_RPFILTER
& apply_mask
) {
1377 snprintf(buf
, sizeof(buf
), "%d", s
->rpfilter
);
1378 system_set_rpfilter(dev
, buf
);
1380 if (s
->flags
& DEV_OPT_ACCEPTLOCAL
& apply_mask
)
1381 system_set_acceptlocal(dev
, s
->acceptlocal
? "1" : "0");
1382 if (s
->flags
& DEV_OPT_IGMPVERSION
& apply_mask
) {
1383 snprintf(buf
, sizeof(buf
), "%d", s
->igmpversion
);
1384 system_set_igmpversion(dev
, buf
);
1386 if (s
->flags
& DEV_OPT_MLDVERSION
& apply_mask
) {
1387 snprintf(buf
, sizeof(buf
), "%d", s
->mldversion
);
1388 system_set_mldversion(dev
, buf
);
1390 if (s
->flags
& DEV_OPT_NEIGHREACHABLETIME
& apply_mask
) {
1391 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4reachabletime
);
1392 system_set_neigh4reachabletime(dev
, buf
);
1393 snprintf(buf
, sizeof(buf
), "%d", s
->neigh6reachabletime
);
1394 system_set_neigh6reachabletime(dev
, buf
);
1396 if (s
->flags
& DEV_OPT_NEIGHGCSTALETIME
& apply_mask
) {
1397 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4gcstaletime
);
1398 system_set_neigh4gcstaletime(dev
, buf
);
1399 snprintf(buf
, sizeof(buf
), "%d", s
->neigh6gcstaletime
);
1400 system_set_neigh6gcstaletime(dev
, buf
);
1402 if (s
->flags
& DEV_OPT_DADTRANSMITS
& apply_mask
) {
1403 snprintf(buf
, sizeof(buf
), "%d", s
->dadtransmits
);
1404 system_set_dadtransmits(dev
, buf
);
1406 if (s
->flags
& DEV_OPT_MULTICAST
& apply_mask
) {
1407 if (system_if_flags(dev
->ifname
, s
->multicast
? IFF_MULTICAST
: 0,
1408 !s
->multicast
? IFF_MULTICAST
: 0) < 0)
1409 s
->flags
&= ~DEV_OPT_MULTICAST
;
1411 if (s
->flags
& DEV_OPT_SENDREDIRECTS
& apply_mask
)
1412 system_set_sendredirects(dev
, s
->sendredirects
? "1" : "0");
1414 system_if_apply_rps_xps(dev
, s
);
1417 int system_if_up(struct device
*dev
)
1419 system_if_get_settings(dev
, &dev
->orig_settings
);
1420 /* Only keep orig settings based on what needs to be set */
1421 dev
->orig_settings
.valid_flags
= dev
->orig_settings
.flags
;
1422 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
1423 system_if_apply_settings(dev
, &dev
->settings
, dev
->settings
.flags
);
1424 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
1427 int system_if_down(struct device
*dev
)
1429 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
1430 system_if_apply_settings(dev
, &dev
->orig_settings
, dev
->orig_settings
.flags
);
1434 struct if_check_data
{
1440 #ifndef IFF_LOWER_UP
1441 #define IFF_LOWER_UP 0x10000
1444 static int cb_if_check_valid(struct nl_msg
*msg
, void *arg
)
1446 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
1447 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
1448 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1450 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
1453 device_set_present(chk
->dev
, ifi
->ifi_index
> 0 ? true : false);
1454 device_set_link(chk
->dev
, ifi
->ifi_flags
& IFF_LOWER_UP
? true : false);
1459 static int cb_if_check_ack(struct nl_msg
*msg
, void *arg
)
1461 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1466 static int cb_if_check_error(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
1468 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1470 device_set_present(chk
->dev
, false);
1471 device_set_link(chk
->dev
, false);
1472 chk
->pending
= err
->error
;
1477 int system_if_check(struct device
*dev
)
1479 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1481 struct ifinfomsg ifi
= {
1482 .ifi_family
= AF_UNSPEC
,
1485 struct if_check_data chk
= {
1491 msg
= nlmsg_alloc_simple(RTM_GETLINK
, 0);
1495 if (nlmsg_append(msg
, &ifi
, sizeof(ifi
), 0) ||
1496 nla_put_string(msg
, IFLA_IFNAME
, dev
->ifname
))
1499 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_if_check_valid
, &chk
);
1500 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, cb_if_check_ack
, &chk
);
1501 nl_cb_err(cb
, NL_CB_CUSTOM
, cb_if_check_error
, &chk
);
1503 nl_send_auto_complete(sock_rtnl
, msg
);
1504 while (chk
.pending
> 0)
1505 nl_recvmsgs(sock_rtnl
, cb
);
1517 system_if_get_parent(struct device
*dev
)
1519 char buf
[64], *devname
;
1520 int ifindex
, iflink
, len
;
1523 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
1524 f
= fopen(buf
, "r");
1528 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
1535 iflink
= strtoul(buf
, NULL
, 0);
1536 ifindex
= system_if_resolve(dev
);
1537 if (!iflink
|| iflink
== ifindex
)
1540 devname
= if_indextoname(iflink
, buf
);
1544 return device_get(devname
, true);
1548 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
1554 fd
= openat(dir_fd
, file
, O_RDONLY
);
1559 len
= read(fd
, buf
, len
- 1);
1563 } else if (len
> 0) {
1566 c
= strchr(buf
, '\n');
1579 read_uint64_file(int dir_fd
, const char *file
, uint64_t *val
)
1584 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
1586 *val
= strtoull(buf
, NULL
, 0);
1591 /* Assume advertised flags == supported flags */
1592 static const struct {
1595 } ethtool_link_modes
[] = {
1596 { ADVERTISED_10baseT_Half
, "10H" },
1597 { ADVERTISED_10baseT_Full
, "10F" },
1598 { ADVERTISED_100baseT_Half
, "100H" },
1599 { ADVERTISED_100baseT_Full
, "100F" },
1600 { ADVERTISED_1000baseT_Half
, "1000H" },
1601 { ADVERTISED_1000baseT_Full
, "1000F" },
1604 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
1607 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
1608 if (mask
& ethtool_link_modes
[i
].mask
)
1609 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
1614 system_if_force_external(const char *ifname
)
1619 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/phy80211", ifname
);
1620 return stat(buf
, &s
) == 0;
1624 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
1626 struct ethtool_cmd ecmd
;
1632 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s", dev
->ifname
);
1633 dir_fd
= open(buf
, O_DIRECTORY
);
1635 memset(&ecmd
, 0, sizeof(ecmd
));
1636 memset(&ifr
, 0, sizeof(ifr
));
1637 strcpy(ifr
.ifr_name
, dev
->ifname
);
1638 ifr
.ifr_data
= (caddr_t
) &ecmd
;
1639 ecmd
.cmd
= ETHTOOL_GSET
;
1641 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
1642 c
= blobmsg_open_array(b
, "link-advertising");
1643 system_add_link_modes(b
, ecmd
.advertising
);
1644 blobmsg_close_array(b
, c
);
1646 c
= blobmsg_open_array(b
, "link-supported");
1647 system_add_link_modes(b
, ecmd
.supported
);
1648 blobmsg_close_array(b
, c
);
1650 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
1651 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
1652 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
1653 blobmsg_add_string_buffer(b
);
1661 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
1663 const char *const counters
[] = {
1664 "collisions", "rx_frame_errors", "tx_compressed",
1665 "multicast", "rx_length_errors", "tx_dropped",
1666 "rx_bytes", "rx_missed_errors", "tx_errors",
1667 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1668 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1669 "rx_dropped", "tx_aborted_errors", "tx_packets",
1670 "rx_errors", "tx_bytes", "tx_window_errors",
1671 "rx_fifo_errors", "tx_carrier_errors",
1678 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
1679 stats_dir
= open(buf
, O_DIRECTORY
);
1683 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
1684 if (read_uint64_file(stats_dir
, counters
[i
], &val
))
1685 blobmsg_add_u64(b
, counters
[i
], val
);
1691 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
1693 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
1694 int alen
= v4
? 4 : 16;
1695 unsigned int flags
= 0;
1696 struct ifaddrmsg ifa
= {
1697 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1698 .ifa_prefixlen
= addr
->mask
,
1699 .ifa_index
= dev
->ifindex
,
1703 if (cmd
== RTM_NEWADDR
)
1704 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1706 msg
= nlmsg_alloc_simple(cmd
, flags
);
1710 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
1711 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
1713 if (addr
->broadcast
)
1714 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
1715 if (addr
->point_to_point
)
1716 nla_put_u32(msg
, IFA_ADDRESS
, addr
->point_to_point
);
1718 time_t now
= system_get_rtime();
1719 struct ifa_cacheinfo cinfo
= {0xffffffffU
, 0xffffffffU
, 0, 0};
1721 if (addr
->preferred_until
) {
1722 int64_t preferred
= addr
->preferred_until
- now
;
1725 else if (preferred
> UINT32_MAX
)
1726 preferred
= UINT32_MAX
;
1728 cinfo
.ifa_prefered
= preferred
;
1731 if (addr
->valid_until
) {
1732 int64_t valid
= addr
->valid_until
- now
;
1737 else if (valid
> UINT32_MAX
)
1740 cinfo
.ifa_valid
= valid
;
1743 nla_put(msg
, IFA_CACHEINFO
, sizeof(cinfo
), &cinfo
);
1745 if (cmd
== RTM_NEWADDR
&& (addr
->flags
& DEVADDR_OFFLINK
))
1746 nla_put_u32(msg
, IFA_FLAGS
, IFA_F_NOPREFIXROUTE
);
1749 return system_rtnl_call(msg
);
1752 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
1754 return system_addr(dev
, addr
, RTM_NEWADDR
);
1757 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
1759 return system_addr(dev
, addr
, RTM_DELADDR
);
1762 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
1764 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
1766 unsigned int flags
= 0;
1769 have_gw
= !!route
->nexthop
.in
.s_addr
;
1771 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
1772 route
->nexthop
.in6
.s6_addr32
[1] ||
1773 route
->nexthop
.in6
.s6_addr32
[2] ||
1774 route
->nexthop
.in6
.s6_addr32
[3];
1776 unsigned int table
= (route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))
1777 ? route
->table
: RT_TABLE_MAIN
;
1779 struct rtmsg rtm
= {
1780 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1781 .rtm_dst_len
= route
->mask
,
1782 .rtm_src_len
= route
->sourcemask
,
1783 .rtm_table
= (table
< 256) ? table
: RT_TABLE_UNSPEC
,
1784 .rtm_protocol
= (route
->flags
& DEVROUTE_PROTO
) ? route
->proto
: RTPROT_STATIC
,
1785 .rtm_scope
= RT_SCOPE_NOWHERE
,
1786 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
1787 .rtm_flags
= (route
->flags
& DEVROUTE_ONLINK
) ? RTNH_F_ONLINK
: 0,
1791 if (cmd
== RTM_NEWROUTE
) {
1792 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1794 if (!dev
) { // Add null-route
1795 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1796 rtm
.rtm_type
= RTN_UNREACHABLE
;
1799 rtm
.rtm_scope
= (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
1802 if (route
->flags
& DEVROUTE_TYPE
) {
1803 rtm
.rtm_type
= route
->type
;
1804 if (!(route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))) {
1805 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_BROADCAST
||
1806 rtm
.rtm_type
== RTN_NAT
|| rtm
.rtm_type
== RTN_ANYCAST
)
1807 rtm
.rtm_table
= RT_TABLE_LOCAL
;
1810 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_NAT
) {
1811 rtm
.rtm_scope
= RT_SCOPE_HOST
;
1812 } else if (rtm
.rtm_type
== RTN_BROADCAST
|| rtm
.rtm_type
== RTN_MULTICAST
||
1813 rtm
.rtm_type
== RTN_ANYCAST
) {
1814 rtm
.rtm_scope
= RT_SCOPE_LINK
;
1815 } else if (rtm
.rtm_type
== RTN_BLACKHOLE
|| rtm
.rtm_type
== RTN_UNREACHABLE
||
1816 rtm
.rtm_type
== RTN_PROHIBIT
|| rtm
.rtm_type
== RTN_FAILED_POLICY
) {
1817 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1822 msg
= nlmsg_alloc_simple(cmd
, flags
);
1826 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
1829 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
1831 if (route
->sourcemask
) {
1832 if (rtm
.rtm_family
== AF_INET
)
1833 nla_put(msg
, RTA_PREFSRC
, alen
, &route
->source
);
1835 nla_put(msg
, RTA_SRC
, alen
, &route
->source
);
1838 if (route
->metric
> 0)
1839 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
1842 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
1845 nla_put_u32(msg
, RTA_OIF
, dev
->ifindex
);
1848 nla_put_u32(msg
, RTA_TABLE
, table
);
1850 if (route
->flags
& DEVROUTE_MTU
) {
1851 struct nlattr
*metrics
;
1853 if (!(metrics
= nla_nest_start(msg
, RTA_METRICS
)))
1854 goto nla_put_failure
;
1856 nla_put_u32(msg
, RTAX_MTU
, route
->mtu
);
1858 nla_nest_end(msg
, metrics
);
1861 return system_rtnl_call(msg
);
1868 int system_add_route(struct device
*dev
, struct device_route
*route
)
1870 return system_rt(dev
, route
, RTM_NEWROUTE
);
1873 int system_del_route(struct device
*dev
, struct device_route
*route
)
1875 return system_rt(dev
, route
, RTM_DELROUTE
);
1878 int system_flush_routes(void)
1880 const char *names
[] = {
1881 "/proc/sys/net/ipv4/route/flush",
1882 "/proc/sys/net/ipv6/route/flush"
1886 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
1887 fd
= open(names
[i
], O_WRONLY
);
1891 if (write(fd
, "-1", 2)) {}
1897 bool system_resolve_rt_type(const char *type
, unsigned int *id
)
1899 return system_rtn_aton(type
, id
);
1902 bool system_resolve_rt_proto(const char *type
, unsigned int *id
)
1906 unsigned int n
, proto
= 256;
1908 if ((n
= strtoul(type
, &e
, 0)) >= 0 && !*e
&& e
!= type
)
1910 else if (!strcmp(type
, "unspec"))
1911 proto
= RTPROT_UNSPEC
;
1912 else if (!strcmp(type
, "kernel"))
1913 proto
= RTPROT_KERNEL
;
1914 else if (!strcmp(type
, "boot"))
1915 proto
= RTPROT_BOOT
;
1916 else if (!strcmp(type
, "static"))
1917 proto
= RTPROT_STATIC
;
1918 else if ((f
= fopen("/etc/iproute2/rt_protos", "r")) != NULL
) {
1919 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
) {
1920 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
1923 n
= strtoul(e
, NULL
, 10);
1924 e
= strtok(NULL
, " \t\n");
1926 if (e
&& !strcmp(e
, type
)) {
1941 bool system_resolve_rt_table(const char *name
, unsigned int *id
)
1945 unsigned int n
, table
= RT_TABLE_UNSPEC
;
1947 /* first try to parse table as number */
1948 if ((n
= strtoul(name
, &e
, 0)) > 0 && !*e
)
1951 /* handle well known aliases */
1952 else if (!strcmp(name
, "default"))
1953 table
= RT_TABLE_DEFAULT
;
1954 else if (!strcmp(name
, "main"))
1955 table
= RT_TABLE_MAIN
;
1956 else if (!strcmp(name
, "local"))
1957 table
= RT_TABLE_LOCAL
;
1959 /* try to look up name in /etc/iproute2/rt_tables */
1960 else if ((f
= fopen("/etc/iproute2/rt_tables", "r")) != NULL
)
1962 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
)
1964 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
1967 n
= strtoul(e
, NULL
, 10);
1968 e
= strtok(NULL
, " \t\n");
1970 if (e
&& !strcmp(e
, name
))
1980 if (table
== RT_TABLE_UNSPEC
)
1987 bool system_is_default_rt_table(unsigned int id
)
1989 return (id
== RT_TABLE_MAIN
);
1992 bool system_resolve_rpfilter(const char *filter
, unsigned int *id
)
1997 if (!strcmp(filter
, "strict"))
1999 else if (!strcmp(filter
, "loose"))
2002 n
= strtoul(filter
, &e
, 0);
2003 if (*e
|| e
== filter
|| n
> 2)
2011 static int system_iprule(struct iprule
*rule
, int cmd
)
2013 int alen
= ((rule
->flags
& IPRULE_FAMILY
) == IPRULE_INET4
) ? 4 : 16;
2016 struct rtmsg rtm
= {
2017 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
2018 .rtm_protocol
= RTPROT_STATIC
,
2019 .rtm_scope
= RT_SCOPE_UNIVERSE
,
2020 .rtm_table
= RT_TABLE_UNSPEC
,
2021 .rtm_type
= RTN_UNSPEC
,
2025 if (cmd
== RTM_NEWRULE
)
2026 rtm
.rtm_type
= RTN_UNICAST
;
2029 rtm
.rtm_flags
|= FIB_RULE_INVERT
;
2031 if (rule
->flags
& IPRULE_SRC
)
2032 rtm
.rtm_src_len
= rule
->src_mask
;
2034 if (rule
->flags
& IPRULE_DEST
)
2035 rtm
.rtm_dst_len
= rule
->dest_mask
;
2037 if (rule
->flags
& IPRULE_TOS
)
2038 rtm
.rtm_tos
= rule
->tos
;
2040 if (rule
->flags
& IPRULE_LOOKUP
) {
2041 if (rule
->lookup
< 256)
2042 rtm
.rtm_table
= rule
->lookup
;
2045 if (rule
->flags
& IPRULE_ACTION
)
2046 rtm
.rtm_type
= rule
->action
;
2047 else if (rule
->flags
& IPRULE_GOTO
)
2048 rtm
.rtm_type
= FR_ACT_GOTO
;
2049 else if (!(rule
->flags
& (IPRULE_LOOKUP
| IPRULE_ACTION
| IPRULE_GOTO
)))
2050 rtm
.rtm_type
= FR_ACT_NOP
;
2052 msg
= nlmsg_alloc_simple(cmd
, NLM_F_REQUEST
);
2057 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
2059 if (rule
->flags
& IPRULE_IN
)
2060 nla_put(msg
, FRA_IFNAME
, strlen(rule
->in_dev
) + 1, rule
->in_dev
);
2062 if (rule
->flags
& IPRULE_OUT
)
2063 nla_put(msg
, FRA_OIFNAME
, strlen(rule
->out_dev
) + 1, rule
->out_dev
);
2065 if (rule
->flags
& IPRULE_SRC
)
2066 nla_put(msg
, FRA_SRC
, alen
, &rule
->src_addr
);
2068 if (rule
->flags
& IPRULE_DEST
)
2069 nla_put(msg
, FRA_DST
, alen
, &rule
->dest_addr
);
2071 if (rule
->flags
& IPRULE_PRIORITY
)
2072 nla_put_u32(msg
, FRA_PRIORITY
, rule
->priority
);
2073 else if (cmd
== RTM_NEWRULE
)
2074 nla_put_u32(msg
, FRA_PRIORITY
, rule
->order
);
2076 if (rule
->flags
& IPRULE_FWMARK
)
2077 nla_put_u32(msg
, FRA_FWMARK
, rule
->fwmark
);
2079 if (rule
->flags
& IPRULE_FWMASK
)
2080 nla_put_u32(msg
, FRA_FWMASK
, rule
->fwmask
);
2082 if (rule
->flags
& IPRULE_LOOKUP
) {
2083 if (rule
->lookup
>= 256)
2084 nla_put_u32(msg
, FRA_TABLE
, rule
->lookup
);
2087 if (rule
->flags
& IPRULE_GOTO
)
2088 nla_put_u32(msg
, FRA_GOTO
, rule
->gotoid
);
2090 return system_rtnl_call(msg
);
2093 int system_add_iprule(struct iprule
*rule
)
2095 return system_iprule(rule
, RTM_NEWRULE
);
2098 int system_del_iprule(struct iprule
*rule
)
2100 return system_iprule(rule
, RTM_DELRULE
);
2103 int system_flush_iprules(void)
2108 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET
);
2109 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET6
);
2111 memset(&rule
, 0, sizeof(rule
));
2114 rule
.flags
= IPRULE_INET4
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2117 rule
.lookup
= RT_TABLE_LOCAL
;
2118 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2120 rule
.priority
= 32766;
2121 rule
.lookup
= RT_TABLE_MAIN
;
2122 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2124 rule
.priority
= 32767;
2125 rule
.lookup
= RT_TABLE_DEFAULT
;
2126 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2129 rule
.flags
= IPRULE_INET6
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2132 rule
.lookup
= RT_TABLE_LOCAL
;
2133 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2135 rule
.priority
= 32766;
2136 rule
.lookup
= RT_TABLE_MAIN
;
2137 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2142 bool system_resolve_iprule_action(const char *action
, unsigned int *id
)
2144 return system_rtn_aton(action
, id
);
2147 time_t system_get_rtime(void)
2152 if (syscall(__NR_clock_gettime
, CLOCK_MONOTONIC
, &ts
) == 0)
2155 if (gettimeofday(&tv
, NULL
) == 0)
2162 #define IP_DF 0x4000
2165 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
2169 memset(&ifr
, 0, sizeof(ifr
));
2170 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
));
2171 ifr
.ifr_ifru
.ifru_data
= p
;
2172 return ioctl(sock_ioctl
, cmd
, &ifr
);
2175 #ifdef IFLA_IPTUN_MAX
2176 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
2177 static int system_add_gre_tunnel(const char *name
, const char *kind
,
2178 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2181 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2182 struct blob_attr
*cur
;
2183 uint32_t ikey
= 0, okey
= 0, flags
= 0, flowinfo
= 0;
2184 uint16_t iflags
= 0, oflags
= 0;
2186 int ret
= 0, ttl
= 0;
2188 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2192 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2193 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2195 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2201 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2202 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2209 nla_put_u32(nlm
, IFLA_GRE_LINK
, link
);
2211 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2212 ttl
= blobmsg_get_u32(cur
);
2214 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2215 char *str
= blobmsg_get_string(cur
);
2216 if (strcmp(str
, "inherit")) {
2219 if (!system_tos_aton(str
, &uval
)) {
2225 flowinfo
|= htonl(uval
<< 20) & IP6_FLOWINFO_TCLASS
;
2230 flags
|= IP6_TNL_F_USE_ORIG_TCLASS
;
2236 if ((cur
= tb
[TUNNEL_ATTR_INFO
]) && (blobmsg_type(cur
) == BLOBMSG_TYPE_STRING
)) {
2237 uint8_t icsum
, ocsum
, iseqno
, oseqno
;
2238 if (sscanf(blobmsg_get_string(cur
), "%u,%u,%hhu,%hhu,%hhu,%hhu",
2239 &ikey
, &okey
, &icsum
, &ocsum
, &iseqno
, &oseqno
) < 6) {
2264 struct in6_addr in6buf
;
2265 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2266 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2270 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(in6buf
), &in6buf
);
2273 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2274 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2278 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(in6buf
), &in6buf
);
2280 nla_put_u8(nlm
, IFLA_GRE_ENCAP_LIMIT
, 4);
2283 nla_put_u32(nlm
, IFLA_GRE_FLOWINFO
, flowinfo
);
2286 nla_put_u32(nlm
, IFLA_GRE_FLAGS
, flags
);
2291 struct in_addr inbuf
;
2294 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2295 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2299 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(inbuf
), &inbuf
);
2302 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2303 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2307 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(inbuf
), &inbuf
);
2309 if (IN_MULTICAST(ntohl(inbuf
.s_addr
))) {
2311 okey
= inbuf
.s_addr
;
2316 ikey
= inbuf
.s_addr
;
2322 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2323 set_df
= blobmsg_get_bool(cur
);
2326 /* ttl != 0 and nopmtudisc are incompatible */
2334 nla_put_u8(nlm
, IFLA_GRE_PMTUDISC
, set_df
? 1 : 0);
2336 nla_put_u8(nlm
, IFLA_GRE_TOS
, tos
);
2340 nla_put_u8(nlm
, IFLA_GRE_TTL
, ttl
);
2343 nla_put_u16(nlm
, IFLA_GRE_OFLAGS
, oflags
);
2346 nla_put_u16(nlm
, IFLA_GRE_IFLAGS
, iflags
);
2349 nla_put_u32(nlm
, IFLA_GRE_OKEY
, okey
);
2352 nla_put_u32(nlm
, IFLA_GRE_IKEY
, ikey
);
2354 nla_nest_end(nlm
, infodata
);
2355 nla_nest_end(nlm
, linkinfo
);
2357 return system_rtnl_call(nlm
);
2366 static int system_add_vti_tunnel(const char *name
, const char *kind
,
2367 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2370 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2371 struct blob_attr
*cur
;
2372 uint32_t ikey
= 0, okey
= 0;
2375 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2379 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2380 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2382 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2388 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2389 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2396 nla_put_u32(nlm
, IFLA_VTI_LINK
, link
);
2398 if ((cur
= tb
[TUNNEL_ATTR_INFO
]) && (blobmsg_type(cur
) == BLOBMSG_TYPE_STRING
)) {
2399 if (sscanf(blobmsg_get_string(cur
), "%u,%u",
2400 &ikey
, &okey
) < 2) {
2407 struct in6_addr in6buf
;
2408 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2409 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2413 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(in6buf
), &in6buf
);
2416 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2417 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2421 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(in6buf
), &in6buf
);
2425 struct in_addr inbuf
;
2427 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2428 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2432 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(inbuf
), &inbuf
);
2435 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2436 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2440 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(inbuf
), &inbuf
);
2446 nla_put_u32(nlm
, IFLA_VTI_OKEY
, htonl(okey
));
2449 nla_put_u32(nlm
, IFLA_VTI_IKEY
, htonl(ikey
));
2451 nla_nest_end(nlm
, infodata
);
2452 nla_nest_end(nlm
, linkinfo
);
2454 return system_rtnl_call(nlm
);
2462 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
, const unsigned int link
, struct blob_attr
**tb
)
2464 struct blob_attr
*cur
;
2466 struct ip_tunnel_parm p
= {
2475 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
]) &&
2476 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.saddr
) < 1)
2479 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
]) &&
2480 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.daddr
) < 1)
2483 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2484 set_df
= blobmsg_get_bool(cur
);
2486 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2487 p
.iph
.ttl
= blobmsg_get_u32(cur
);
2489 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2490 char *str
= blobmsg_get_string(cur
);
2491 if (strcmp(str
, "inherit")) {
2494 if (!system_tos_aton(str
, &uval
))
2502 p
.iph
.frag_off
= set_df
? htons(IP_DF
) : 0;
2503 /* ttl !=0 and nopmtudisc are incompatible */
2504 if (p
.iph
.ttl
&& p
.iph
.frag_off
== 0)
2507 strncpy(p
.name
, name
, sizeof(p
.name
));
2509 switch (p
.iph
.protocol
) {
2511 return tunnel_ioctl("tunl0", SIOCADDTUNNEL
, &p
);
2513 return tunnel_ioctl("sit0", SIOCADDTUNNEL
, &p
);
2520 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
)
2522 struct blob_attr
*cur
;
2525 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2527 str
= blobmsg_data(cur
);
2529 if (!strcmp(str
, "greip") || !strcmp(str
, "gretapip") ||
2530 !strcmp(str
, "greip6") || !strcmp(str
, "gretapip6") ||
2531 !strcmp(str
, "vtiip") || !strcmp(str
, "vtiip6"))
2532 return system_link_del(name
);
2534 return tunnel_ioctl(name
, SIOCDELTUNNEL
, NULL
);
2537 int system_del_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2539 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2541 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2542 blob_data(attr
), blob_len(attr
));
2544 return __system_del_ip_tunnel(name
, tb
);
2547 int system_update_ipv6_mtu(struct device
*dev
, int mtu
)
2553 snprintf(buf
, sizeof(buf
), "/proc/sys/net/ipv6/conf/%s/mtu",
2556 fd
= open(buf
, O_RDWR
);
2561 ssize_t len
= read(fd
, buf
, sizeof(buf
) - 1);
2568 if (write(fd
, buf
, snprintf(buf
, sizeof(buf
), "%i", mtu
)) > 0)
2577 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2579 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2580 struct blob_attr
*cur
;
2583 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2584 blob_data(attr
), blob_len(attr
));
2586 __system_del_ip_tunnel(name
, tb
);
2588 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2590 str
= blobmsg_data(cur
);
2592 unsigned int ttl
= 0;
2593 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
2594 ttl
= blobmsg_get_u32(cur
);
2599 unsigned int link
= 0;
2600 if ((cur
= tb
[TUNNEL_ATTR_LINK
])) {
2601 struct interface
*iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
2605 if (iface
->l3_dev
.dev
)
2606 link
= iface
->l3_dev
.dev
->ifindex
;
2609 if (!strcmp(str
, "sit")) {
2610 if (system_add_proto_tunnel(name
, IPPROTO_IPV6
, link
, tb
) < 0)
2614 if ((cur
= tb
[TUNNEL_ATTR_6RD_PREFIX
])) {
2616 struct ip_tunnel_6rd p6
;
2618 memset(&p6
, 0, sizeof(p6
));
2620 if (!parse_ip_and_netmask(AF_INET6
, blobmsg_data(cur
),
2621 &p6
.prefix
, &mask
) || mask
> 128)
2623 p6
.prefixlen
= mask
;
2625 if ((cur
= tb
[TUNNEL_ATTR_6RD_RELAY_PREFIX
])) {
2626 if (!parse_ip_and_netmask(AF_INET
, blobmsg_data(cur
),
2627 &p6
.relay_prefix
, &mask
) || mask
> 32)
2629 p6
.relay_prefixlen
= mask
;
2632 if (tunnel_ioctl(name
, SIOCADD6RD
, &p6
) < 0) {
2633 __system_del_ip_tunnel(name
, tb
);
2638 #ifdef IFLA_IPTUN_MAX
2639 } else if (!strcmp(str
, "ipip6")) {
2640 struct nl_msg
*nlm
= nlmsg_alloc_simple(RTM_NEWLINK
,
2641 NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2642 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
};
2648 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2649 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2652 nla_put_u32(nlm
, IFLA_LINK
, link
);
2654 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2659 nla_put_string(nlm
, IFLA_INFO_KIND
, "ip6tnl");
2660 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2667 nla_put_u32(nlm
, IFLA_IPTUN_LINK
, link
);
2669 nla_put_u8(nlm
, IFLA_IPTUN_PROTO
, IPPROTO_IPIP
);
2670 nla_put_u8(nlm
, IFLA_IPTUN_TTL
, (ttl
) ? ttl
: 64);
2671 nla_put_u8(nlm
, IFLA_IPTUN_ENCAP_LIMIT
, 4);
2673 struct in6_addr in6buf
;
2674 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2675 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2679 nla_put(nlm
, IFLA_IPTUN_LOCAL
, sizeof(in6buf
), &in6buf
);
2682 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2683 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2687 nla_put(nlm
, IFLA_IPTUN_REMOTE
, sizeof(in6buf
), &in6buf
);
2690 #ifdef IFLA_IPTUN_FMR_MAX
2691 if ((cur
= tb
[TUNNEL_ATTR_FMRS
])) {
2692 struct nlattr
*fmrs
= nla_nest_start(nlm
, IFLA_IPTUN_FMRS
);
2694 struct blob_attr
*fmr
;
2695 unsigned rem
, fmrcnt
= 0;
2696 blobmsg_for_each_attr(fmr
, cur
, rem
) {
2697 if (blobmsg_type(fmr
) != BLOBMSG_TYPE_STRING
)
2700 unsigned ip4len
, ip6len
, ealen
, offset
= 6;
2704 if (sscanf(blobmsg_get_string(fmr
), "%47[^/]/%u,%15[^/]/%u,%u,%u",
2705 ip6buf
, &ip6len
, ip4buf
, &ip4len
, &ealen
, &offset
) < 5) {
2710 struct in6_addr ip6prefix
;
2711 struct in_addr ip4prefix
;
2712 if (inet_pton(AF_INET6
, ip6buf
, &ip6prefix
) != 1 ||
2713 inet_pton(AF_INET
, ip4buf
, &ip4prefix
) != 1) {
2718 struct nlattr
*rule
= nla_nest_start(nlm
, ++fmrcnt
);
2720 nla_put(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX
, sizeof(ip6prefix
), &ip6prefix
);
2721 nla_put(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX
, sizeof(ip4prefix
), &ip4prefix
);
2722 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX_LEN
, ip6len
);
2723 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX_LEN
, ip4len
);
2724 nla_put_u8(nlm
, IFLA_IPTUN_FMR_EA_LEN
, ealen
);
2725 nla_put_u8(nlm
, IFLA_IPTUN_FMR_OFFSET
, offset
);
2727 nla_nest_end(nlm
, rule
);
2730 nla_nest_end(nlm
, fmrs
);
2734 nla_nest_end(nlm
, infodata
);
2735 nla_nest_end(nlm
, linkinfo
);
2737 return system_rtnl_call(nlm
);
2741 } else if (!strcmp(str
, "greip")) {
2742 return system_add_gre_tunnel(name
, "gre", link
, tb
, false);
2743 } else if (!strcmp(str
, "gretapip")) {
2744 return system_add_gre_tunnel(name
, "gretap", link
, tb
, false);
2745 } else if (!strcmp(str
, "greip6")) {
2746 return system_add_gre_tunnel(name
, "ip6gre", link
, tb
, true);
2747 } else if (!strcmp(str
, "gretapip6")) {
2748 return system_add_gre_tunnel(name
, "ip6gretap", link
, tb
, true);
2750 } else if (!strcmp(str
, "vtiip")) {
2751 return system_add_vti_tunnel(name
, "vti", link
, tb
, false);
2752 } else if (!strcmp(str
, "vtiip6")) {
2753 return system_add_vti_tunnel(name
, "vti6", link
, tb
, true);
2756 } else if (!strcmp(str
, "ipip")) {
2757 return system_add_proto_tunnel(name
, IPPROTO_IPIP
, link
, tb
);