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/veth.h>
42 #include <linux/version.h>
44 #ifndef RTN_FAILED_POLICY
45 #define RTN_FAILED_POLICY 12
48 #ifndef IFA_F_NOPREFIXROUTE
49 #define IFA_F_NOPREFIXROUTE 0x200
53 #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_multicast_fast_leave(struct device
*dev
, const char *val
)
331 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_fast_leave", dev
->ifname
, val
);
334 static void system_bridge_set_hairpin_mode(struct device
*dev
, const char *val
)
336 system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev
->ifname
, val
);
339 static void system_bridge_set_multicast_router(struct device
*dev
, const char *val
, bool bridge
)
341 system_set_dev_sysctl(bridge
? "/sys/class/net/%s/bridge/multicast_router" :
342 "/sys/class/net/%s/brport/multicast_router",
346 static void system_bridge_set_robustness(struct device
*dev
, const char *val
)
348 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_count",
350 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_count",
354 static void system_bridge_set_query_interval(struct device
*dev
, const char *val
)
356 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_interval",
360 static void system_bridge_set_query_response_interval(struct device
*dev
, const char *val
)
362 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_response_interval",
366 static void system_bridge_set_last_member_interval(struct device
*dev
, const char *val
)
368 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_interval",
372 static void system_bridge_set_membership_interval(struct device
*dev
, const char *val
)
374 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_membership_interval",
378 static void system_bridge_set_other_querier_timeout(struct device
*dev
, const char *val
)
380 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier_interval",
384 static void system_bridge_set_startup_query_interval(struct device
*dev
, const char *val
)
386 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_interval",
390 static void system_bridge_set_learning(struct device
*dev
, const char *val
)
392 system_set_dev_sysctl("/sys/class/net/%s/brport/learning", dev
->ifname
, val
);
395 static void system_bridge_set_unicast_flood(struct device
*dev
, const char *val
)
397 system_set_dev_sysctl("/sys/class/net/%s/brport/unicast_flood", dev
->ifname
, val
);
400 static void system_set_sendredirects(struct device
*dev
, const char *val
)
402 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects", dev
->ifname
, val
);
405 static int system_get_sysctl(const char *path
, char *buf
, const size_t buf_sz
)
407 int fd
= -1, ret
= -1;
409 fd
= open(path
, O_RDONLY
);
413 ssize_t len
= read(fd
, buf
, buf_sz
- 1);
427 system_get_dev_sysctl(const char *path
, const char *device
, char *buf
, const size_t buf_sz
)
429 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
430 return system_get_sysctl(dev_buf
, buf
, buf_sz
);
433 static int system_get_disable_ipv6(struct device
*dev
, char *buf
, const size_t buf_sz
)
435 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
436 dev
->ifname
, buf
, buf_sz
);
439 static int system_get_rpfilter(struct device
*dev
, char *buf
, const size_t buf_sz
)
441 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
442 dev
->ifname
, buf
, buf_sz
);
445 static int system_get_acceptlocal(struct device
*dev
, char *buf
, const size_t buf_sz
)
447 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
448 dev
->ifname
, buf
, buf_sz
);
451 static int system_get_igmpversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
453 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
454 dev
->ifname
, buf
, buf_sz
);
457 static int system_get_mldversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
459 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
460 dev
->ifname
, buf
, buf_sz
);
463 static int system_get_neigh4reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
465 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
466 dev
->ifname
, buf
, buf_sz
);
469 static int system_get_neigh6reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
471 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
472 dev
->ifname
, buf
, buf_sz
);
475 static int system_get_neigh4gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
477 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time",
478 dev
->ifname
, buf
, buf_sz
);
481 static int system_get_neigh6gcstaletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
483 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time",
484 dev
->ifname
, buf
, buf_sz
);
487 static int system_get_dadtransmits(struct device
*dev
, char *buf
, const size_t buf_sz
)
489 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
490 dev
->ifname
, buf
, buf_sz
);
493 static int system_get_sendredirects(struct device
*dev
, char *buf
, const size_t buf_sz
)
495 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects",
496 dev
->ifname
, buf
, buf_sz
);
499 // Evaluate netlink messages
500 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
502 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
503 struct nlattr
*nla
[__IFLA_MAX
];
507 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
510 nlmsg_parse(nh
, sizeof(struct ifinfomsg
), nla
, __IFLA_MAX
- 1, NULL
);
511 if (!nla
[IFLA_IFNAME
])
514 struct device
*dev
= device_find(nla_data(nla
[IFLA_IFNAME
]));
518 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev
->ifname
, buf
, sizeof(buf
)))
519 link_state
= strtoul(buf
, NULL
, 0);
521 device_set_link(dev
, link_state
? true : false);
528 handle_hotplug_msg(char *data
, int size
)
530 const char *subsystem
= NULL
, *interface
= NULL
;
531 char *cur
, *end
, *sep
;
536 if (!strncmp(data
, "add@", 4))
538 else if (!strncmp(data
, "remove@", 7))
543 skip
= strlen(data
) + 1;
546 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
547 skip
= strlen(cur
) + 1;
549 sep
= strchr(cur
, '=');
554 if (!strcmp(cur
, "INTERFACE"))
556 else if (!strcmp(cur
, "SUBSYSTEM")) {
558 if (strcmp(subsystem
, "net") != 0)
561 if (subsystem
&& interface
)
567 dev
= device_find(interface
);
571 if (dev
->type
!= &simple_device_type
)
574 if (add
&& system_if_force_external(dev
->ifname
))
577 device_set_present(dev
, add
);
581 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
583 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
584 struct sockaddr_nl nla
;
585 unsigned char *buf
= NULL
;
588 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
590 handle_hotplug_msg((char *) buf
, size
);
596 static int system_rtnl_call(struct nl_msg
*msg
)
600 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
606 return nl_wait_for_ack(sock_rtnl
);
609 int system_bridge_delbr(struct device
*bridge
)
611 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
614 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
618 memset(&ifr
, 0, sizeof(ifr
));
620 ifr
.ifr_ifindex
= dev
->ifindex
;
623 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
));
624 return ioctl(sock_ioctl
, cmd
, &ifr
);
627 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
631 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
632 if (stat(buf
, &st
) < 0)
638 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
644 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
645 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
649 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
657 path
= strrchr(buf
, '/');
665 system_bridge_set_wireless(struct device
*bridge
, struct device
*dev
)
667 bool mcast_to_ucast
= dev
->wireless_ap
;
670 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_TO_UNICAST
&&
671 !bridge
->settings
.multicast_to_unicast
)
672 mcast_to_ucast
= false;
674 if (!mcast_to_ucast
|| dev
->wireless_isolate
)
677 system_bridge_set_multicast_to_unicast(dev
, mcast_to_ucast
? "1" : "0");
678 system_bridge_set_hairpin_mode(dev
, hairpin
? "1" : "0");
681 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
687 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
688 if (!oldbr
|| strcmp(oldbr
, bridge
->ifname
) != 0)
689 ret
= system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
692 system_bridge_set_wireless(bridge
, dev
);
694 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
695 snprintf(buf
, sizeof(buf
), "%i", dev
->settings
.multicast_router
);
696 system_bridge_set_multicast_router(dev
, buf
, false);
699 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_FAST_LEAVE
&&
700 dev
->settings
.multicast_fast_leave
)
701 system_bridge_set_multicast_fast_leave(dev
, "1");
703 if (dev
->settings
.flags
& DEV_OPT_LEARNING
&&
704 !dev
->settings
.learning
)
705 system_bridge_set_learning(dev
, "0");
707 if (dev
->settings
.flags
& DEV_OPT_UNICAST_FLOOD
&&
708 !dev
->settings
.unicast_flood
)
709 system_bridge_set_unicast_flood(dev
, "0");
714 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
716 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
719 int system_if_resolve(struct device
*dev
)
722 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
723 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
724 return ifr
.ifr_ifindex
;
729 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
733 memset(&ifr
, 0, sizeof(ifr
));
734 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
));
735 ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
);
736 ifr
.ifr_flags
|= add
;
737 ifr
.ifr_flags
&= ~rem
;
738 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
750 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
752 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
754 return ifa
->ifa_index
== ifindex
;
757 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
759 struct rtmsg
*r
= NLMSG_DATA(hdr
);
760 struct nlattr
*tb
[__RTA_MAX
];
762 if (r
->rtm_protocol
== RTPROT_KERNEL
&&
763 r
->rtm_family
== AF_INET6
)
766 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
770 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
773 static bool check_rule(struct nlmsghdr
*hdr
, int ifindex
)
778 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
780 struct clear_data
*clr
= arg
;
781 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
782 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
788 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
795 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
802 if (hdr
->nlmsg_type
!= RTM_NEWRULE
)
811 if (!cb(hdr
, clr
->dev
? clr
->dev
->ifindex
: 0))
814 if (type
== RTM_DELRULE
)
815 D(SYSTEM
, "Remove a rule\n");
817 D(SYSTEM
, "Remove %s from device %s\n",
818 type
== RTM_DELADDR
? "an address" : "a route",
820 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
821 hdr
= nlmsg_hdr(clr
->msg
);
822 hdr
->nlmsg_type
= type
;
823 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
825 nl_socket_disable_auto_ack(sock_rtnl
);
826 nl_send_auto_complete(sock_rtnl
, clr
->msg
);
827 nl_socket_enable_auto_ack(sock_rtnl
);
833 cb_finish_event(struct nl_msg
*msg
, void *arg
)
841 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
844 *pending
= err
->error
;
849 system_if_clear_entries(struct device
*dev
, int type
, int af
)
851 struct clear_data clr
;
852 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
855 .rtm_flags
= RTM_F_CLONED
,
857 int flags
= NLM_F_DUMP
;
866 clr
.size
= sizeof(struct rtgenmsg
);
869 clr
.size
= sizeof(struct rtmsg
);
878 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
882 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
883 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
884 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
885 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
887 nl_send_auto_complete(sock_rtnl
, clr
.msg
);
889 nl_recvmsgs(sock_rtnl
, cb
);
897 * Clear bridge (membership) state and bring down device
899 void system_if_clear_state(struct device
*dev
)
901 static char buf
[256];
904 device_set_ifindex(dev
, system_if_resolve(dev
));
905 if (dev
->external
|| !dev
->ifindex
)
908 system_if_flags(dev
->ifname
, 0, IFF_UP
);
910 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
911 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
912 system_bridge_delbr(dev
);
916 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
918 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
919 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
922 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
923 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
924 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
925 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
926 system_set_disable_ipv6(dev
, "0");
929 static inline unsigned long
930 sec_to_jiffies(int val
)
932 return (unsigned long) val
* 100;
935 static void system_bridge_conf_multicast_deps(struct device
*bridge
,
936 struct bridge_config
*cfg
,
942 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
||
943 cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
||
944 cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
945 val
= cfg
->robustness
* cfg
->query_interval
+
946 cfg
->query_response_interval
;
948 snprintf(buf
, buf_len
, "%i", val
);
949 system_bridge_set_membership_interval(bridge
, buf
);
951 val
= cfg
->robustness
* cfg
->query_interval
+
952 cfg
->query_response_interval
/ 2;
954 snprintf(buf
, buf_len
, "%i", val
);
955 system_bridge_set_other_querier_timeout(bridge
, buf
);
958 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
959 val
= cfg
->query_interval
/ 4;
961 snprintf(buf
, buf_len
, "%i", val
);
962 system_bridge_set_startup_query_interval(bridge
, buf
);
966 static void system_bridge_conf_multicast(struct device
*bridge
,
967 struct bridge_config
*cfg
,
971 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
972 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
974 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
975 bridge
->ifname
, cfg
->multicast_querier
? "1" : "0");
977 snprintf(buf
, buf_len
, "%i", cfg
->hash_max
);
978 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
979 bridge
->ifname
, buf
);
981 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
982 snprintf(buf
, buf_len
, "%i", bridge
->settings
.multicast_router
);
983 system_bridge_set_multicast_router(bridge
, buf
, true);
986 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
) {
987 snprintf(buf
, buf_len
, "%i", cfg
->robustness
);
988 system_bridge_set_robustness(bridge
, buf
);
991 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
992 snprintf(buf
, buf_len
, "%i", cfg
->query_interval
);
993 system_bridge_set_query_interval(bridge
, buf
);
996 if (cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
997 snprintf(buf
, buf_len
, "%i", cfg
->query_response_interval
);
998 system_bridge_set_query_response_interval(bridge
, buf
);
1001 if (cfg
->flags
& BRIDGE_OPT_LAST_MEMBER_INTERVAL
) {
1002 snprintf(buf
, buf_len
, "%i", cfg
->last_member_interval
);
1003 system_bridge_set_last_member_interval(bridge
, buf
);
1006 system_bridge_conf_multicast_deps(bridge
, cfg
, buf
, buf_len
);
1009 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
1012 unsigned long args
[4] = {};
1014 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
1017 args
[0] = BRCTL_SET_BRIDGE_STP_STATE
;
1018 args
[1] = !!cfg
->stp
;
1019 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1021 args
[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY
;
1022 args
[1] = sec_to_jiffies(cfg
->forward_delay
);
1023 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1025 system_bridge_conf_multicast(bridge
, cfg
, buf
, sizeof(buf
));
1027 args
[0] = BRCTL_SET_BRIDGE_PRIORITY
;
1028 args
[1] = cfg
->priority
;
1029 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1031 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
1032 args
[0] = BRCTL_SET_AGEING_TIME
;
1033 args
[1] = sec_to_jiffies(cfg
->ageing_time
);
1034 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1037 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
1038 args
[0] = BRCTL_SET_BRIDGE_HELLO_TIME
;
1039 args
[1] = sec_to_jiffies(cfg
->hello_time
);
1040 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1043 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
1044 args
[0] = BRCTL_SET_BRIDGE_MAX_AGE
;
1045 args
[1] = sec_to_jiffies(cfg
->max_age
);
1046 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
1052 int system_macvlan_add(struct device
*macvlan
, struct device
*dev
, struct macvlan_config
*cfg
)
1055 struct nlattr
*linkinfo
, *data
;
1056 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
1058 static const struct {
1060 enum macvlan_mode val
;
1062 { "private", MACVLAN_MODE_PRIVATE
},
1063 { "vepa", MACVLAN_MODE_VEPA
},
1064 { "bridge", MACVLAN_MODE_BRIDGE
},
1065 { "passthru", MACVLAN_MODE_PASSTHRU
},
1068 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1073 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1075 if (cfg
->flags
& MACVLAN_OPT_MACADDR
)
1076 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1077 nla_put_string(msg
, IFLA_IFNAME
, macvlan
->ifname
);
1078 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1080 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1081 goto nla_put_failure
;
1083 nla_put_string(msg
, IFLA_INFO_KIND
, "macvlan");
1085 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1086 goto nla_put_failure
;
1089 for (i
= 0; i
< ARRAY_SIZE(modes
); i
++) {
1090 if (strcmp(cfg
->mode
, modes
[i
].name
) != 0)
1093 nla_put_u32(msg
, IFLA_MACVLAN_MODE
, modes
[i
].val
);
1098 nla_nest_end(msg
, data
);
1099 nla_nest_end(msg
, linkinfo
);
1101 rv
= system_rtnl_call(msg
);
1103 D(SYSTEM
, "Error adding macvlan '%s' over '%s': %d\n", macvlan
->ifname
, dev
->ifname
, rv
);
1112 static int system_link_del(const char *ifname
)
1115 struct ifinfomsg iim
= {
1116 .ifi_family
= AF_UNSPEC
,
1120 msg
= nlmsg_alloc_simple(RTM_DELLINK
, NLM_F_REQUEST
);
1125 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1126 nla_put_string(msg
, IFLA_IFNAME
, ifname
);
1127 return system_rtnl_call(msg
);
1130 int system_macvlan_del(struct device
*macvlan
)
1132 return system_link_del(macvlan
->ifname
);
1135 int system_veth_add(struct device
*veth
, struct veth_config
*cfg
)
1138 struct ifinfomsg empty_iim
= {};
1139 struct nlattr
*linkinfo
, *data
, *veth_info
;
1142 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1147 nlmsg_append(msg
, &empty_iim
, sizeof(empty_iim
), 0);
1149 if (cfg
->flags
& VETH_OPT_MACADDR
)
1150 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1151 nla_put_string(msg
, IFLA_IFNAME
, veth
->ifname
);
1153 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1154 goto nla_put_failure
;
1156 nla_put_string(msg
, IFLA_INFO_KIND
, "veth");
1158 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1159 goto nla_put_failure
;
1161 if (!(veth_info
= nla_nest_start(msg
, VETH_INFO_PEER
)))
1162 goto nla_put_failure
;
1164 nlmsg_append(msg
, &empty_iim
, sizeof(empty_iim
), 0);
1166 if (cfg
->flags
& VETH_OPT_PEER_NAME
)
1167 nla_put_string(msg
, IFLA_IFNAME
, cfg
->peer_name
);
1168 if (cfg
->flags
& VETH_OPT_PEER_MACADDR
)
1169 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->peer_macaddr
), cfg
->peer_macaddr
);
1171 nla_nest_end(msg
, veth_info
);
1172 nla_nest_end(msg
, data
);
1173 nla_nest_end(msg
, linkinfo
);
1175 rv
= system_rtnl_call(msg
);
1177 if (cfg
->flags
& VETH_OPT_PEER_NAME
)
1178 D(SYSTEM
, "Error adding veth '%s' with peer '%s': %d\n", veth
->ifname
, cfg
->peer_name
, rv
);
1180 D(SYSTEM
, "Error adding veth '%s': %d\n", veth
->ifname
, rv
);
1190 int system_veth_del(struct device
*veth
)
1192 return system_link_del(veth
->ifname
);
1195 static int system_vlan(struct device
*dev
, int id
)
1197 struct vlan_ioctl_args ifr
= {
1198 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
1199 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
1202 ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1205 ifr
.cmd
= DEL_VLAN_CMD
;
1208 ifr
.cmd
= ADD_VLAN_CMD
;
1211 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
1212 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1215 int system_vlan_add(struct device
*dev
, int id
)
1217 return system_vlan(dev
, id
);
1220 int system_vlan_del(struct device
*dev
)
1222 return system_vlan(dev
, -1);
1225 int system_vlandev_add(struct device
*vlandev
, struct device
*dev
, struct vlandev_config
*cfg
)
1228 struct nlattr
*linkinfo
, *data
;
1229 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
};
1232 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1237 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1238 nla_put_string(msg
, IFLA_IFNAME
, vlandev
->ifname
);
1239 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1241 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1242 goto nla_put_failure
;
1244 nla_put_string(msg
, IFLA_INFO_KIND
, "vlan");
1246 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1247 goto nla_put_failure
;
1249 nla_put_u16(msg
, IFLA_VLAN_ID
, cfg
->vid
);
1251 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1252 nla_put_u16(msg
, IFLA_VLAN_PROTOCOL
, htons(cfg
->proto
));
1254 if(cfg
->proto
== VLAN_PROTO_8021AD
)
1255 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
);
1258 nla_nest_end(msg
, data
);
1259 nla_nest_end(msg
, linkinfo
);
1261 rv
= system_rtnl_call(msg
);
1263 D(SYSTEM
, "Error adding vlandev '%s' over '%s': %d\n", vlandev
->ifname
, dev
->ifname
, rv
);
1272 int system_vlandev_del(struct device
*vlandev
)
1274 return system_link_del(vlandev
->ifname
);
1278 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
1283 memset(&ifr
, 0, sizeof(ifr
));
1284 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1286 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
1287 s
->mtu
= ifr
.ifr_mtu
;
1288 s
->flags
|= DEV_OPT_MTU
;
1291 s
->mtu6
= system_update_ipv6_mtu(dev
, 0);
1293 s
->flags
|= DEV_OPT_MTU6
;
1295 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
1296 s
->txqueuelen
= ifr
.ifr_qlen
;
1297 s
->flags
|= DEV_OPT_TXQUEUELEN
;
1300 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
1301 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
1302 s
->flags
|= DEV_OPT_MACADDR
;
1305 if (!system_get_disable_ipv6(dev
, buf
, sizeof(buf
))) {
1306 s
->ipv6
= !strtoul(buf
, NULL
, 0);
1307 s
->flags
|= DEV_OPT_IPV6
;
1310 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) == 0) {
1311 s
->promisc
= ifr
.ifr_flags
& IFF_PROMISC
;
1312 s
->flags
|= DEV_OPT_PROMISC
;
1314 s
->multicast
= ifr
.ifr_flags
& IFF_MULTICAST
;
1315 s
->flags
|= DEV_OPT_MULTICAST
;
1318 if (!system_get_rpfilter(dev
, buf
, sizeof(buf
))) {
1319 s
->rpfilter
= strtoul(buf
, NULL
, 0);
1320 s
->flags
|= DEV_OPT_RPFILTER
;
1323 if (!system_get_acceptlocal(dev
, buf
, sizeof(buf
))) {
1324 s
->acceptlocal
= strtoul(buf
, NULL
, 0);
1325 s
->flags
|= DEV_OPT_ACCEPTLOCAL
;
1328 if (!system_get_igmpversion(dev
, buf
, sizeof(buf
))) {
1329 s
->igmpversion
= strtoul(buf
, NULL
, 0);
1330 s
->flags
|= DEV_OPT_IGMPVERSION
;
1333 if (!system_get_mldversion(dev
, buf
, sizeof(buf
))) {
1334 s
->mldversion
= strtoul(buf
, NULL
, 0);
1335 s
->flags
|= DEV_OPT_MLDVERSION
;
1338 if (!system_get_neigh4reachabletime(dev
, buf
, sizeof(buf
))) {
1339 s
->neigh4reachabletime
= strtoul(buf
, NULL
, 0);
1340 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1343 if (!system_get_neigh6reachabletime(dev
, buf
, sizeof(buf
))) {
1344 s
->neigh6reachabletime
= strtoul(buf
, NULL
, 0);
1345 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1348 if (!system_get_neigh4gcstaletime(dev
, buf
, sizeof(buf
))) {
1349 s
->neigh4gcstaletime
= strtoul(buf
, NULL
, 0);
1350 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1353 if (!system_get_neigh6gcstaletime(dev
, buf
, sizeof(buf
))) {
1354 s
->neigh6gcstaletime
= strtoul(buf
, NULL
, 0);
1355 s
->flags
|= DEV_OPT_NEIGHGCSTALETIME
;
1358 if (!system_get_dadtransmits(dev
, buf
, sizeof(buf
))) {
1359 s
->dadtransmits
= strtoul(buf
, NULL
, 0);
1360 s
->flags
|= DEV_OPT_DADTRANSMITS
;
1363 if (!system_get_sendredirects(dev
, buf
, sizeof(buf
))) {
1364 s
->sendredirects
= strtoul(buf
, NULL
, 0);
1365 s
->flags
|= DEV_OPT_SENDREDIRECTS
;
1370 system_if_set_rps_xps_val(const char *path
, int val
)
1376 if (glob(path
, 0, NULL
, &gl
))
1379 snprintf(val_buf
, sizeof(val_buf
), "%x", val
);
1380 for (i
= 0; i
< gl
.gl_pathc
; i
++)
1381 system_set_sysctl(gl
.gl_pathv
[i
], val_buf
);
1387 system_if_apply_rps_xps(struct device
*dev
, struct device_settings
*s
)
1389 long n_cpus
= sysconf(_SC_NPROCESSORS_ONLN
);
1395 val
= (1 << n_cpus
) - 1;
1396 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/rps_cpus", dev
->ifname
);
1397 system_if_set_rps_xps_val(dev_buf
, s
->rps
? val
: 0);
1399 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/xps_cpus", dev
->ifname
);
1400 system_if_set_rps_xps_val(dev_buf
, s
->xps
? val
: 0);
1404 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
, unsigned int apply_mask
)
1409 memset(&ifr
, 0, sizeof(ifr
));
1410 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1411 if (s
->flags
& DEV_OPT_MTU
& apply_mask
) {
1412 ifr
.ifr_mtu
= s
->mtu
;
1413 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
1414 s
->flags
&= ~DEV_OPT_MTU
;
1416 if (s
->flags
& DEV_OPT_MTU6
& apply_mask
) {
1417 system_update_ipv6_mtu(dev
, s
->mtu6
);
1419 if (s
->flags
& DEV_OPT_TXQUEUELEN
& apply_mask
) {
1420 ifr
.ifr_qlen
= s
->txqueuelen
;
1421 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
1422 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
1424 if ((s
->flags
& DEV_OPT_MACADDR
& apply_mask
) && !dev
->external
) {
1425 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
1426 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
1427 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
1428 s
->flags
&= ~DEV_OPT_MACADDR
;
1430 if (s
->flags
& DEV_OPT_IPV6
& apply_mask
)
1431 system_set_disable_ipv6(dev
, s
->ipv6
? "0" : "1");
1432 if (s
->flags
& DEV_OPT_PROMISC
& apply_mask
) {
1433 if (system_if_flags(dev
->ifname
, s
->promisc
? IFF_PROMISC
: 0,
1434 !s
->promisc
? IFF_PROMISC
: 0) < 0)
1435 s
->flags
&= ~DEV_OPT_PROMISC
;
1437 if (s
->flags
& DEV_OPT_RPFILTER
& apply_mask
) {
1438 snprintf(buf
, sizeof(buf
), "%d", s
->rpfilter
);
1439 system_set_rpfilter(dev
, buf
);
1441 if (s
->flags
& DEV_OPT_ACCEPTLOCAL
& apply_mask
)
1442 system_set_acceptlocal(dev
, s
->acceptlocal
? "1" : "0");
1443 if (s
->flags
& DEV_OPT_IGMPVERSION
& apply_mask
) {
1444 snprintf(buf
, sizeof(buf
), "%d", s
->igmpversion
);
1445 system_set_igmpversion(dev
, buf
);
1447 if (s
->flags
& DEV_OPT_MLDVERSION
& apply_mask
) {
1448 snprintf(buf
, sizeof(buf
), "%d", s
->mldversion
);
1449 system_set_mldversion(dev
, buf
);
1451 if (s
->flags
& DEV_OPT_NEIGHREACHABLETIME
& apply_mask
) {
1452 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4reachabletime
);
1453 system_set_neigh4reachabletime(dev
, buf
);
1454 snprintf(buf
, sizeof(buf
), "%d", s
->neigh6reachabletime
);
1455 system_set_neigh6reachabletime(dev
, buf
);
1457 if (s
->flags
& DEV_OPT_NEIGHGCSTALETIME
& apply_mask
) {
1458 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4gcstaletime
);
1459 system_set_neigh4gcstaletime(dev
, buf
);
1460 snprintf(buf
, sizeof(buf
), "%d", s
->neigh6gcstaletime
);
1461 system_set_neigh6gcstaletime(dev
, buf
);
1463 if (s
->flags
& DEV_OPT_DADTRANSMITS
& apply_mask
) {
1464 snprintf(buf
, sizeof(buf
), "%d", s
->dadtransmits
);
1465 system_set_dadtransmits(dev
, buf
);
1467 if (s
->flags
& DEV_OPT_MULTICAST
& apply_mask
) {
1468 if (system_if_flags(dev
->ifname
, s
->multicast
? IFF_MULTICAST
: 0,
1469 !s
->multicast
? IFF_MULTICAST
: 0) < 0)
1470 s
->flags
&= ~DEV_OPT_MULTICAST
;
1472 if (s
->flags
& DEV_OPT_SENDREDIRECTS
& apply_mask
)
1473 system_set_sendredirects(dev
, s
->sendredirects
? "1" : "0");
1475 system_if_apply_rps_xps(dev
, s
);
1478 int system_if_up(struct device
*dev
)
1480 system_if_get_settings(dev
, &dev
->orig_settings
);
1481 /* Only keep orig settings based on what needs to be set */
1482 dev
->orig_settings
.valid_flags
= dev
->orig_settings
.flags
;
1483 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
1484 system_if_apply_settings(dev
, &dev
->settings
, dev
->settings
.flags
);
1485 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
1488 int system_if_down(struct device
*dev
)
1490 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
1491 system_if_apply_settings(dev
, &dev
->orig_settings
, dev
->orig_settings
.flags
);
1495 struct if_check_data
{
1501 #ifndef IFF_LOWER_UP
1502 #define IFF_LOWER_UP 0x10000
1505 static int cb_if_check_valid(struct nl_msg
*msg
, void *arg
)
1507 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
1508 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
1509 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1511 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
1514 device_set_present(chk
->dev
, ifi
->ifi_index
> 0 ? true : false);
1515 device_set_link(chk
->dev
, ifi
->ifi_flags
& IFF_LOWER_UP
? true : false);
1520 static int cb_if_check_ack(struct nl_msg
*msg
, void *arg
)
1522 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1527 static int cb_if_check_error(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
1529 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1531 device_set_present(chk
->dev
, false);
1532 device_set_link(chk
->dev
, false);
1533 chk
->pending
= err
->error
;
1538 int system_if_check(struct device
*dev
)
1540 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1542 struct ifinfomsg ifi
= {
1543 .ifi_family
= AF_UNSPEC
,
1546 struct if_check_data chk
= {
1552 msg
= nlmsg_alloc_simple(RTM_GETLINK
, 0);
1556 if (nlmsg_append(msg
, &ifi
, sizeof(ifi
), 0) ||
1557 nla_put_string(msg
, IFLA_IFNAME
, dev
->ifname
))
1560 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_if_check_valid
, &chk
);
1561 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, cb_if_check_ack
, &chk
);
1562 nl_cb_err(cb
, NL_CB_CUSTOM
, cb_if_check_error
, &chk
);
1564 nl_send_auto_complete(sock_rtnl
, msg
);
1565 while (chk
.pending
> 0)
1566 nl_recvmsgs(sock_rtnl
, cb
);
1578 system_if_get_parent(struct device
*dev
)
1580 char buf
[64], *devname
;
1581 int ifindex
, iflink
, len
;
1584 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
1585 f
= fopen(buf
, "r");
1589 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
1596 iflink
= strtoul(buf
, NULL
, 0);
1597 ifindex
= system_if_resolve(dev
);
1598 if (!iflink
|| iflink
== ifindex
)
1601 devname
= if_indextoname(iflink
, buf
);
1605 return device_get(devname
, true);
1609 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
1615 fd
= openat(dir_fd
, file
, O_RDONLY
);
1620 len
= read(fd
, buf
, len
- 1);
1624 } else if (len
> 0) {
1627 c
= strchr(buf
, '\n');
1640 read_uint64_file(int dir_fd
, const char *file
, uint64_t *val
)
1645 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
1647 *val
= strtoull(buf
, NULL
, 0);
1652 /* Assume advertised flags == supported flags */
1653 static const struct {
1656 } ethtool_link_modes
[] = {
1657 { ADVERTISED_10baseT_Half
, "10H" },
1658 { ADVERTISED_10baseT_Full
, "10F" },
1659 { ADVERTISED_100baseT_Half
, "100H" },
1660 { ADVERTISED_100baseT_Full
, "100F" },
1661 { ADVERTISED_1000baseT_Half
, "1000H" },
1662 { ADVERTISED_1000baseT_Full
, "1000F" },
1665 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
1668 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
1669 if (mask
& ethtool_link_modes
[i
].mask
)
1670 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
1675 system_if_force_external(const char *ifname
)
1680 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/phy80211", ifname
);
1681 return stat(buf
, &s
) == 0;
1685 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
1687 struct ethtool_cmd ecmd
;
1693 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s", dev
->ifname
);
1694 dir_fd
= open(buf
, O_DIRECTORY
);
1696 memset(&ecmd
, 0, sizeof(ecmd
));
1697 memset(&ifr
, 0, sizeof(ifr
));
1698 strcpy(ifr
.ifr_name
, dev
->ifname
);
1699 ifr
.ifr_data
= (caddr_t
) &ecmd
;
1700 ecmd
.cmd
= ETHTOOL_GSET
;
1702 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
1703 c
= blobmsg_open_array(b
, "link-advertising");
1704 system_add_link_modes(b
, ecmd
.advertising
);
1705 blobmsg_close_array(b
, c
);
1707 c
= blobmsg_open_array(b
, "link-supported");
1708 system_add_link_modes(b
, ecmd
.supported
);
1709 blobmsg_close_array(b
, c
);
1711 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
1712 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
1713 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
1714 blobmsg_add_string_buffer(b
);
1722 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
1724 const char *const counters
[] = {
1725 "collisions", "rx_frame_errors", "tx_compressed",
1726 "multicast", "rx_length_errors", "tx_dropped",
1727 "rx_bytes", "rx_missed_errors", "tx_errors",
1728 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1729 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1730 "rx_dropped", "tx_aborted_errors", "tx_packets",
1731 "rx_errors", "tx_bytes", "tx_window_errors",
1732 "rx_fifo_errors", "tx_carrier_errors",
1739 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
1740 stats_dir
= open(buf
, O_DIRECTORY
);
1744 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
1745 if (read_uint64_file(stats_dir
, counters
[i
], &val
))
1746 blobmsg_add_u64(b
, counters
[i
], val
);
1752 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
1754 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
1755 int alen
= v4
? 4 : 16;
1756 unsigned int flags
= 0;
1757 struct ifaddrmsg ifa
= {
1758 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1759 .ifa_prefixlen
= addr
->mask
,
1760 .ifa_index
= dev
->ifindex
,
1764 if (cmd
== RTM_NEWADDR
)
1765 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1767 msg
= nlmsg_alloc_simple(cmd
, flags
);
1771 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
1772 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
1774 if (addr
->broadcast
)
1775 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
1776 if (addr
->point_to_point
)
1777 nla_put_u32(msg
, IFA_ADDRESS
, addr
->point_to_point
);
1779 time_t now
= system_get_rtime();
1780 struct ifa_cacheinfo cinfo
= {0xffffffffU
, 0xffffffffU
, 0, 0};
1782 if (addr
->preferred_until
) {
1783 int64_t preferred
= addr
->preferred_until
- now
;
1786 else if (preferred
> UINT32_MAX
)
1787 preferred
= UINT32_MAX
;
1789 cinfo
.ifa_prefered
= preferred
;
1792 if (addr
->valid_until
) {
1793 int64_t valid
= addr
->valid_until
- now
;
1798 else if (valid
> UINT32_MAX
)
1801 cinfo
.ifa_valid
= valid
;
1804 nla_put(msg
, IFA_CACHEINFO
, sizeof(cinfo
), &cinfo
);
1806 if (cmd
== RTM_NEWADDR
&& (addr
->flags
& DEVADDR_OFFLINK
))
1807 nla_put_u32(msg
, IFA_FLAGS
, IFA_F_NOPREFIXROUTE
);
1810 return system_rtnl_call(msg
);
1813 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
1815 return system_addr(dev
, addr
, RTM_NEWADDR
);
1818 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
1820 return system_addr(dev
, addr
, RTM_DELADDR
);
1823 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
1825 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
1827 unsigned int flags
= 0;
1830 have_gw
= !!route
->nexthop
.in
.s_addr
;
1832 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
1833 route
->nexthop
.in6
.s6_addr32
[1] ||
1834 route
->nexthop
.in6
.s6_addr32
[2] ||
1835 route
->nexthop
.in6
.s6_addr32
[3];
1837 unsigned int table
= (route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))
1838 ? route
->table
: RT_TABLE_MAIN
;
1840 struct rtmsg rtm
= {
1841 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1842 .rtm_dst_len
= route
->mask
,
1843 .rtm_src_len
= route
->sourcemask
,
1844 .rtm_table
= (table
< 256) ? table
: RT_TABLE_UNSPEC
,
1845 .rtm_protocol
= (route
->flags
& DEVROUTE_PROTO
) ? route
->proto
: RTPROT_STATIC
,
1846 .rtm_scope
= RT_SCOPE_NOWHERE
,
1847 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
1848 .rtm_flags
= (route
->flags
& DEVROUTE_ONLINK
) ? RTNH_F_ONLINK
: 0,
1852 if (cmd
== RTM_NEWROUTE
) {
1853 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1855 if (!dev
) { // Add null-route
1856 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1857 rtm
.rtm_type
= RTN_UNREACHABLE
;
1860 rtm
.rtm_scope
= (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
1863 if (route
->flags
& DEVROUTE_TYPE
) {
1864 rtm
.rtm_type
= route
->type
;
1865 if (!(route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))) {
1866 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_BROADCAST
||
1867 rtm
.rtm_type
== RTN_NAT
|| rtm
.rtm_type
== RTN_ANYCAST
)
1868 rtm
.rtm_table
= RT_TABLE_LOCAL
;
1871 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_NAT
) {
1872 rtm
.rtm_scope
= RT_SCOPE_HOST
;
1873 } else if (rtm
.rtm_type
== RTN_BROADCAST
|| rtm
.rtm_type
== RTN_MULTICAST
||
1874 rtm
.rtm_type
== RTN_ANYCAST
) {
1875 rtm
.rtm_scope
= RT_SCOPE_LINK
;
1876 } else if (rtm
.rtm_type
== RTN_BLACKHOLE
|| rtm
.rtm_type
== RTN_UNREACHABLE
||
1877 rtm
.rtm_type
== RTN_PROHIBIT
|| rtm
.rtm_type
== RTN_FAILED_POLICY
) {
1878 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1883 msg
= nlmsg_alloc_simple(cmd
, flags
);
1887 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
1890 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
1892 if (route
->sourcemask
) {
1893 if (rtm
.rtm_family
== AF_INET
)
1894 nla_put(msg
, RTA_PREFSRC
, alen
, &route
->source
);
1896 nla_put(msg
, RTA_SRC
, alen
, &route
->source
);
1899 if (route
->metric
> 0)
1900 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
1903 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
1906 nla_put_u32(msg
, RTA_OIF
, dev
->ifindex
);
1909 nla_put_u32(msg
, RTA_TABLE
, table
);
1911 if (route
->flags
& DEVROUTE_MTU
) {
1912 struct nlattr
*metrics
;
1914 if (!(metrics
= nla_nest_start(msg
, RTA_METRICS
)))
1915 goto nla_put_failure
;
1917 nla_put_u32(msg
, RTAX_MTU
, route
->mtu
);
1919 nla_nest_end(msg
, metrics
);
1922 return system_rtnl_call(msg
);
1929 int system_add_route(struct device
*dev
, struct device_route
*route
)
1931 return system_rt(dev
, route
, RTM_NEWROUTE
);
1934 int system_del_route(struct device
*dev
, struct device_route
*route
)
1936 return system_rt(dev
, route
, RTM_DELROUTE
);
1939 int system_flush_routes(void)
1941 const char *names
[] = {
1942 "/proc/sys/net/ipv4/route/flush",
1943 "/proc/sys/net/ipv6/route/flush"
1947 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
1948 fd
= open(names
[i
], O_WRONLY
);
1952 if (write(fd
, "-1", 2)) {}
1958 bool system_resolve_rt_type(const char *type
, unsigned int *id
)
1960 return system_rtn_aton(type
, id
);
1963 bool system_resolve_rt_proto(const char *type
, unsigned int *id
)
1967 unsigned int n
, proto
= 256;
1969 if ((n
= strtoul(type
, &e
, 0)) >= 0 && !*e
&& e
!= type
)
1971 else if (!strcmp(type
, "unspec"))
1972 proto
= RTPROT_UNSPEC
;
1973 else if (!strcmp(type
, "kernel"))
1974 proto
= RTPROT_KERNEL
;
1975 else if (!strcmp(type
, "boot"))
1976 proto
= RTPROT_BOOT
;
1977 else if (!strcmp(type
, "static"))
1978 proto
= RTPROT_STATIC
;
1979 else if ((f
= fopen("/etc/iproute2/rt_protos", "r")) != NULL
) {
1980 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
) {
1981 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
1984 n
= strtoul(e
, NULL
, 10);
1985 e
= strtok(NULL
, " \t\n");
1987 if (e
&& !strcmp(e
, type
)) {
2002 bool system_resolve_rt_table(const char *name
, unsigned int *id
)
2006 unsigned int n
, table
= RT_TABLE_UNSPEC
;
2008 /* first try to parse table as number */
2009 if ((n
= strtoul(name
, &e
, 0)) > 0 && !*e
)
2012 /* handle well known aliases */
2013 else if (!strcmp(name
, "default"))
2014 table
= RT_TABLE_DEFAULT
;
2015 else if (!strcmp(name
, "main"))
2016 table
= RT_TABLE_MAIN
;
2017 else if (!strcmp(name
, "local"))
2018 table
= RT_TABLE_LOCAL
;
2020 /* try to look up name in /etc/iproute2/rt_tables */
2021 else if ((f
= fopen("/etc/iproute2/rt_tables", "r")) != NULL
)
2023 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
)
2025 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
2028 n
= strtoul(e
, NULL
, 10);
2029 e
= strtok(NULL
, " \t\n");
2031 if (e
&& !strcmp(e
, name
))
2041 if (table
== RT_TABLE_UNSPEC
)
2048 bool system_is_default_rt_table(unsigned int id
)
2050 return (id
== RT_TABLE_MAIN
);
2053 bool system_resolve_rpfilter(const char *filter
, unsigned int *id
)
2058 if (!strcmp(filter
, "strict"))
2060 else if (!strcmp(filter
, "loose"))
2063 n
= strtoul(filter
, &e
, 0);
2064 if (*e
|| e
== filter
|| n
> 2)
2072 static int system_iprule(struct iprule
*rule
, int cmd
)
2074 int alen
= ((rule
->flags
& IPRULE_FAMILY
) == IPRULE_INET4
) ? 4 : 16;
2077 struct rtmsg rtm
= {
2078 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
2079 .rtm_protocol
= RTPROT_STATIC
,
2080 .rtm_scope
= RT_SCOPE_UNIVERSE
,
2081 .rtm_table
= RT_TABLE_UNSPEC
,
2082 .rtm_type
= RTN_UNSPEC
,
2086 if (cmd
== RTM_NEWRULE
)
2087 rtm
.rtm_type
= RTN_UNICAST
;
2090 rtm
.rtm_flags
|= FIB_RULE_INVERT
;
2092 if (rule
->flags
& IPRULE_SRC
)
2093 rtm
.rtm_src_len
= rule
->src_mask
;
2095 if (rule
->flags
& IPRULE_DEST
)
2096 rtm
.rtm_dst_len
= rule
->dest_mask
;
2098 if (rule
->flags
& IPRULE_TOS
)
2099 rtm
.rtm_tos
= rule
->tos
;
2101 if (rule
->flags
& IPRULE_LOOKUP
) {
2102 if (rule
->lookup
< 256)
2103 rtm
.rtm_table
= rule
->lookup
;
2106 if (rule
->flags
& IPRULE_ACTION
)
2107 rtm
.rtm_type
= rule
->action
;
2108 else if (rule
->flags
& IPRULE_GOTO
)
2109 rtm
.rtm_type
= FR_ACT_GOTO
;
2110 else if (!(rule
->flags
& (IPRULE_LOOKUP
| IPRULE_ACTION
| IPRULE_GOTO
)))
2111 rtm
.rtm_type
= FR_ACT_NOP
;
2113 msg
= nlmsg_alloc_simple(cmd
, NLM_F_REQUEST
);
2118 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
2120 if (rule
->flags
& IPRULE_IN
)
2121 nla_put(msg
, FRA_IFNAME
, strlen(rule
->in_dev
) + 1, rule
->in_dev
);
2123 if (rule
->flags
& IPRULE_OUT
)
2124 nla_put(msg
, FRA_OIFNAME
, strlen(rule
->out_dev
) + 1, rule
->out_dev
);
2126 if (rule
->flags
& IPRULE_SRC
)
2127 nla_put(msg
, FRA_SRC
, alen
, &rule
->src_addr
);
2129 if (rule
->flags
& IPRULE_DEST
)
2130 nla_put(msg
, FRA_DST
, alen
, &rule
->dest_addr
);
2132 if (rule
->flags
& IPRULE_PRIORITY
)
2133 nla_put_u32(msg
, FRA_PRIORITY
, rule
->priority
);
2134 else if (cmd
== RTM_NEWRULE
)
2135 nla_put_u32(msg
, FRA_PRIORITY
, rule
->order
);
2137 if (rule
->flags
& IPRULE_FWMARK
)
2138 nla_put_u32(msg
, FRA_FWMARK
, rule
->fwmark
);
2140 if (rule
->flags
& IPRULE_FWMASK
)
2141 nla_put_u32(msg
, FRA_FWMASK
, rule
->fwmask
);
2143 if (rule
->flags
& IPRULE_LOOKUP
) {
2144 if (rule
->lookup
>= 256)
2145 nla_put_u32(msg
, FRA_TABLE
, rule
->lookup
);
2148 if (rule
->flags
& IPRULE_GOTO
)
2149 nla_put_u32(msg
, FRA_GOTO
, rule
->gotoid
);
2151 return system_rtnl_call(msg
);
2154 int system_add_iprule(struct iprule
*rule
)
2156 return system_iprule(rule
, RTM_NEWRULE
);
2159 int system_del_iprule(struct iprule
*rule
)
2161 return system_iprule(rule
, RTM_DELRULE
);
2164 int system_flush_iprules(void)
2169 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET
);
2170 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET6
);
2172 memset(&rule
, 0, sizeof(rule
));
2175 rule
.flags
= IPRULE_INET4
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2178 rule
.lookup
= RT_TABLE_LOCAL
;
2179 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2181 rule
.priority
= 32766;
2182 rule
.lookup
= RT_TABLE_MAIN
;
2183 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2185 rule
.priority
= 32767;
2186 rule
.lookup
= RT_TABLE_DEFAULT
;
2187 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2190 rule
.flags
= IPRULE_INET6
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2193 rule
.lookup
= RT_TABLE_LOCAL
;
2194 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2196 rule
.priority
= 32766;
2197 rule
.lookup
= RT_TABLE_MAIN
;
2198 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2203 bool system_resolve_iprule_action(const char *action
, unsigned int *id
)
2205 return system_rtn_aton(action
, id
);
2208 time_t system_get_rtime(void)
2213 if (syscall(__NR_clock_gettime
, CLOCK_MONOTONIC
, &ts
) == 0)
2216 if (gettimeofday(&tv
, NULL
) == 0)
2223 #define IP_DF 0x4000
2226 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
2230 memset(&ifr
, 0, sizeof(ifr
));
2231 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
));
2232 ifr
.ifr_ifru
.ifru_data
= p
;
2233 return ioctl(sock_ioctl
, cmd
, &ifr
);
2236 #ifdef IFLA_IPTUN_MAX
2237 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
2238 static int system_add_gre_tunnel(const char *name
, const char *kind
,
2239 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2242 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2243 struct blob_attr
*cur
;
2244 uint32_t ikey
= 0, okey
= 0, flags
= 0, flowinfo
= 0;
2245 uint16_t iflags
= 0, oflags
= 0;
2247 int ret
= 0, ttl
= 0;
2249 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2253 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2254 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2256 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2262 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2263 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2270 nla_put_u32(nlm
, IFLA_GRE_LINK
, link
);
2272 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2273 ttl
= blobmsg_get_u32(cur
);
2275 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2276 char *str
= blobmsg_get_string(cur
);
2277 if (strcmp(str
, "inherit")) {
2280 if (!system_tos_aton(str
, &uval
)) {
2286 flowinfo
|= htonl(uval
<< 20) & IP6_FLOWINFO_TCLASS
;
2291 flags
|= IP6_TNL_F_USE_ORIG_TCLASS
;
2297 if ((cur
= tb
[TUNNEL_ATTR_INFO
]) && (blobmsg_type(cur
) == BLOBMSG_TYPE_STRING
)) {
2298 uint8_t icsum
, ocsum
, iseqno
, oseqno
;
2299 if (sscanf(blobmsg_get_string(cur
), "%u,%u,%hhu,%hhu,%hhu,%hhu",
2300 &ikey
, &okey
, &icsum
, &ocsum
, &iseqno
, &oseqno
) < 6) {
2325 struct in6_addr in6buf
;
2326 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2327 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2331 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(in6buf
), &in6buf
);
2334 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2335 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2339 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(in6buf
), &in6buf
);
2341 nla_put_u8(nlm
, IFLA_GRE_ENCAP_LIMIT
, 4);
2344 nla_put_u32(nlm
, IFLA_GRE_FLOWINFO
, flowinfo
);
2347 nla_put_u32(nlm
, IFLA_GRE_FLAGS
, flags
);
2352 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_GRE_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_GRE_REMOTE
, sizeof(inbuf
), &inbuf
);
2370 if (IN_MULTICAST(ntohl(inbuf
.s_addr
))) {
2372 okey
= inbuf
.s_addr
;
2377 ikey
= inbuf
.s_addr
;
2383 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2384 set_df
= blobmsg_get_bool(cur
);
2387 /* ttl != 0 and nopmtudisc are incompatible */
2395 nla_put_u8(nlm
, IFLA_GRE_PMTUDISC
, set_df
? 1 : 0);
2397 nla_put_u8(nlm
, IFLA_GRE_TOS
, tos
);
2401 nla_put_u8(nlm
, IFLA_GRE_TTL
, ttl
);
2404 nla_put_u16(nlm
, IFLA_GRE_OFLAGS
, oflags
);
2407 nla_put_u16(nlm
, IFLA_GRE_IFLAGS
, iflags
);
2410 nla_put_u32(nlm
, IFLA_GRE_OKEY
, okey
);
2413 nla_put_u32(nlm
, IFLA_GRE_IKEY
, ikey
);
2415 nla_nest_end(nlm
, infodata
);
2416 nla_nest_end(nlm
, linkinfo
);
2418 return system_rtnl_call(nlm
);
2427 static int system_add_vti_tunnel(const char *name
, const char *kind
,
2428 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2431 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2432 struct blob_attr
*cur
;
2433 uint32_t ikey
= 0, okey
= 0;
2436 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2440 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2441 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2443 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2449 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2450 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2457 nla_put_u32(nlm
, IFLA_VTI_LINK
, link
);
2459 if ((cur
= tb
[TUNNEL_ATTR_INFO
]) && (blobmsg_type(cur
) == BLOBMSG_TYPE_STRING
)) {
2460 if (sscanf(blobmsg_get_string(cur
), "%u,%u",
2461 &ikey
, &okey
) < 2) {
2468 struct in6_addr in6buf
;
2469 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2470 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2474 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(in6buf
), &in6buf
);
2477 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2478 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2482 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(in6buf
), &in6buf
);
2486 struct in_addr inbuf
;
2488 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2489 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2493 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(inbuf
), &inbuf
);
2496 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2497 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2501 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(inbuf
), &inbuf
);
2507 nla_put_u32(nlm
, IFLA_VTI_OKEY
, htonl(okey
));
2510 nla_put_u32(nlm
, IFLA_VTI_IKEY
, htonl(ikey
));
2512 nla_nest_end(nlm
, infodata
);
2513 nla_nest_end(nlm
, linkinfo
);
2515 return system_rtnl_call(nlm
);
2523 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
, const unsigned int link
, struct blob_attr
**tb
)
2525 struct blob_attr
*cur
;
2527 struct ip_tunnel_parm p
= {
2536 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
]) &&
2537 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.saddr
) < 1)
2540 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
]) &&
2541 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.daddr
) < 1)
2544 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2545 set_df
= blobmsg_get_bool(cur
);
2547 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2548 p
.iph
.ttl
= blobmsg_get_u32(cur
);
2550 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2551 char *str
= blobmsg_get_string(cur
);
2552 if (strcmp(str
, "inherit")) {
2555 if (!system_tos_aton(str
, &uval
))
2563 p
.iph
.frag_off
= set_df
? htons(IP_DF
) : 0;
2564 /* ttl !=0 and nopmtudisc are incompatible */
2565 if (p
.iph
.ttl
&& p
.iph
.frag_off
== 0)
2568 strncpy(p
.name
, name
, sizeof(p
.name
));
2570 switch (p
.iph
.protocol
) {
2572 return tunnel_ioctl("tunl0", SIOCADDTUNNEL
, &p
);
2574 return tunnel_ioctl("sit0", SIOCADDTUNNEL
, &p
);
2581 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
)
2583 struct blob_attr
*cur
;
2586 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2588 str
= blobmsg_data(cur
);
2590 if (!strcmp(str
, "greip") || !strcmp(str
, "gretapip") ||
2591 !strcmp(str
, "greip6") || !strcmp(str
, "gretapip6") ||
2592 !strcmp(str
, "vtiip") || !strcmp(str
, "vtiip6"))
2593 return system_link_del(name
);
2595 return tunnel_ioctl(name
, SIOCDELTUNNEL
, NULL
);
2598 int system_del_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2600 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2602 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2603 blob_data(attr
), blob_len(attr
));
2605 return __system_del_ip_tunnel(name
, tb
);
2608 int system_update_ipv6_mtu(struct device
*dev
, int mtu
)
2614 snprintf(buf
, sizeof(buf
), "/proc/sys/net/ipv6/conf/%s/mtu",
2617 fd
= open(buf
, O_RDWR
);
2622 ssize_t len
= read(fd
, buf
, sizeof(buf
) - 1);
2629 if (write(fd
, buf
, snprintf(buf
, sizeof(buf
), "%i", mtu
)) > 0)
2638 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2640 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2641 struct blob_attr
*cur
;
2644 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2645 blob_data(attr
), blob_len(attr
));
2647 __system_del_ip_tunnel(name
, tb
);
2649 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2651 str
= blobmsg_data(cur
);
2653 unsigned int ttl
= 0;
2654 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
2655 ttl
= blobmsg_get_u32(cur
);
2660 unsigned int link
= 0;
2661 if ((cur
= tb
[TUNNEL_ATTR_LINK
])) {
2662 struct interface
*iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
2666 if (iface
->l3_dev
.dev
)
2667 link
= iface
->l3_dev
.dev
->ifindex
;
2670 if (!strcmp(str
, "sit")) {
2671 if (system_add_proto_tunnel(name
, IPPROTO_IPV6
, link
, tb
) < 0)
2675 if ((cur
= tb
[TUNNEL_ATTR_6RD_PREFIX
])) {
2677 struct ip_tunnel_6rd p6
;
2679 memset(&p6
, 0, sizeof(p6
));
2681 if (!parse_ip_and_netmask(AF_INET6
, blobmsg_data(cur
),
2682 &p6
.prefix
, &mask
) || mask
> 128)
2684 p6
.prefixlen
= mask
;
2686 if ((cur
= tb
[TUNNEL_ATTR_6RD_RELAY_PREFIX
])) {
2687 if (!parse_ip_and_netmask(AF_INET
, blobmsg_data(cur
),
2688 &p6
.relay_prefix
, &mask
) || mask
> 32)
2690 p6
.relay_prefixlen
= mask
;
2693 if (tunnel_ioctl(name
, SIOCADD6RD
, &p6
) < 0) {
2694 __system_del_ip_tunnel(name
, tb
);
2699 #ifdef IFLA_IPTUN_MAX
2700 } else if (!strcmp(str
, "ipip6")) {
2701 struct nl_msg
*nlm
= nlmsg_alloc_simple(RTM_NEWLINK
,
2702 NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2703 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
};
2709 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2710 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2713 nla_put_u32(nlm
, IFLA_LINK
, link
);
2715 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2720 nla_put_string(nlm
, IFLA_INFO_KIND
, "ip6tnl");
2721 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2728 nla_put_u32(nlm
, IFLA_IPTUN_LINK
, link
);
2730 nla_put_u8(nlm
, IFLA_IPTUN_PROTO
, IPPROTO_IPIP
);
2731 nla_put_u8(nlm
, IFLA_IPTUN_TTL
, (ttl
) ? ttl
: 64);
2732 nla_put_u8(nlm
, IFLA_IPTUN_ENCAP_LIMIT
, 4);
2734 struct in6_addr in6buf
;
2735 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2736 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2740 nla_put(nlm
, IFLA_IPTUN_LOCAL
, sizeof(in6buf
), &in6buf
);
2743 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2744 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2748 nla_put(nlm
, IFLA_IPTUN_REMOTE
, sizeof(in6buf
), &in6buf
);
2751 #ifdef IFLA_IPTUN_FMR_MAX
2752 if ((cur
= tb
[TUNNEL_ATTR_FMRS
])) {
2753 struct nlattr
*fmrs
= nla_nest_start(nlm
, IFLA_IPTUN_FMRS
);
2755 struct blob_attr
*fmr
;
2756 unsigned rem
, fmrcnt
= 0;
2757 blobmsg_for_each_attr(fmr
, cur
, rem
) {
2758 if (blobmsg_type(fmr
) != BLOBMSG_TYPE_STRING
)
2761 unsigned ip4len
, ip6len
, ealen
, offset
= 6;
2765 if (sscanf(blobmsg_get_string(fmr
), "%47[^/]/%u,%15[^/]/%u,%u,%u",
2766 ip6buf
, &ip6len
, ip4buf
, &ip4len
, &ealen
, &offset
) < 5) {
2771 struct in6_addr ip6prefix
;
2772 struct in_addr ip4prefix
;
2773 if (inet_pton(AF_INET6
, ip6buf
, &ip6prefix
) != 1 ||
2774 inet_pton(AF_INET
, ip4buf
, &ip4prefix
) != 1) {
2779 struct nlattr
*rule
= nla_nest_start(nlm
, ++fmrcnt
);
2781 nla_put(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX
, sizeof(ip6prefix
), &ip6prefix
);
2782 nla_put(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX
, sizeof(ip4prefix
), &ip4prefix
);
2783 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX_LEN
, ip6len
);
2784 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX_LEN
, ip4len
);
2785 nla_put_u8(nlm
, IFLA_IPTUN_FMR_EA_LEN
, ealen
);
2786 nla_put_u8(nlm
, IFLA_IPTUN_FMR_OFFSET
, offset
);
2788 nla_nest_end(nlm
, rule
);
2791 nla_nest_end(nlm
, fmrs
);
2795 nla_nest_end(nlm
, infodata
);
2796 nla_nest_end(nlm
, linkinfo
);
2798 return system_rtnl_call(nlm
);
2802 } else if (!strcmp(str
, "greip")) {
2803 return system_add_gre_tunnel(name
, "gre", link
, tb
, false);
2804 } else if (!strcmp(str
, "gretapip")) {
2805 return system_add_gre_tunnel(name
, "gretap", link
, tb
, false);
2806 } else if (!strcmp(str
, "greip6")) {
2807 return system_add_gre_tunnel(name
, "ip6gre", link
, tb
, true);
2808 } else if (!strcmp(str
, "gretapip6")) {
2809 return system_add_gre_tunnel(name
, "ip6gretap", link
, tb
, true);
2811 } else if (!strcmp(str
, "vtiip")) {
2812 return system_add_vti_tunnel(name
, "vti", link
, tb
, false);
2813 } else if (!strcmp(str
, "vtiip6")) {
2814 return system_add_vti_tunnel(name
, "vti6", link
, tb
, true);
2817 } else if (!strcmp(str
, "ipip")) {
2818 return system_add_proto_tunnel(name
, IPPROTO_IPIP
, link
, tb
);