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 RT_TABLE_PRELOCAL
48 #define RT_TABLE_PRELOCAL 128
51 #ifndef IFA_F_NOPREFIXROUTE
52 #define IFA_F_NOPREFIXROUTE 0x200
56 #define IFA_FLAGS (IFA_MULTICAST + 1)
66 #include <netlink/msg.h>
67 #include <netlink/attr.h>
68 #include <netlink/socket.h>
69 #include <libubox/uloop.h>
76 struct uloop_fd uloop
;
81 static int sock_ioctl
= -1;
82 static struct nl_sock
*sock_rtnl
= NULL
;
84 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
);
85 static void handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
);
87 static char dev_buf
[256];
90 handler_nl_event(struct uloop_fd
*u
, unsigned int events
)
92 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
94 socklen_t errlen
= sizeof(err
);
97 nl_recvmsgs_default(ev
->sock
);
101 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
106 // Increase rx buffer size on netlink socket
108 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
111 // Request full dump since some info got dropped
112 struct rtgenmsg msg
= { .rtgen_family
= AF_UNSPEC
};
113 nl_send_simple(ev
->sock
, RTM_GETLINK
, NLM_F_DUMP
, &msg
, sizeof(msg
));
123 uloop_fd_delete(&ev
->uloop
);
127 static struct nl_sock
*
128 create_socket(int protocol
, int groups
)
130 struct nl_sock
*sock
;
132 sock
= nl_socket_alloc();
137 nl_join_groups(sock
, groups
);
139 if (nl_connect(sock
, protocol
))
146 create_raw_event_socket(struct event_socket
*ev
, int protocol
, int groups
,
147 uloop_fd_handler cb
, int flags
)
149 ev
->sock
= create_socket(protocol
, groups
);
153 ev
->uloop
.fd
= nl_socket_get_fd(ev
->sock
);
155 if (uloop_fd_add(&ev
->uloop
, ULOOP_READ
|flags
))
162 create_event_socket(struct event_socket
*ev
, int protocol
,
163 int (*cb
)(struct nl_msg
*msg
, void *arg
))
165 if (!create_raw_event_socket(ev
, protocol
, 0, handler_nl_event
, ULOOP_ERROR_CB
))
168 // Install the valid custom callback handler
169 nl_socket_modify_cb(ev
->sock
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, NULL
);
171 // Disable sequence number checking on event sockets
172 nl_socket_disable_seq_check(ev
->sock
);
174 // Increase rx buffer size to 65K on event sockets
176 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
183 system_rtn_aton(const char *src
, unsigned int *dst
)
188 if (!strcmp(src
, "local"))
190 else if (!strcmp(src
, "nat"))
192 else if (!strcmp(src
, "broadcast"))
194 else if (!strcmp(src
, "anycast"))
196 else if (!strcmp(src
, "multicast"))
198 else if (!strcmp(src
, "prohibit"))
200 else if (!strcmp(src
, "unreachable"))
202 else if (!strcmp(src
, "blackhole"))
204 else if (!strcmp(src
, "xresolve"))
206 else if (!strcmp(src
, "unicast"))
208 else if (!strcmp(src
, "throw"))
210 else if (!strcmp(src
, "failed_policy"))
211 n
= RTN_FAILED_POLICY
;
213 n
= strtoul(src
, &e
, 0);
214 if (!e
|| *e
|| e
== src
|| n
> 255)
223 system_tos_aton(const char *src
, unsigned *dst
)
227 *dst
= strtoul(src
, &e
, 16);
228 if (e
== src
|| *e
|| *dst
> 255)
234 int system_init(void)
236 static struct event_socket rtnl_event
;
237 static struct event_socket hotplug_event
;
239 sock_ioctl
= socket(AF_LOCAL
, SOCK_DGRAM
, 0);
240 system_fd_set_cloexec(sock_ioctl
);
242 // Prepare socket for routing / address control
243 sock_rtnl
= create_socket(NETLINK_ROUTE
, 0);
247 if (!create_event_socket(&rtnl_event
, NETLINK_ROUTE
, cb_rtnl_event
))
250 if (!create_raw_event_socket(&hotplug_event
, NETLINK_KOBJECT_UEVENT
, 1,
251 handle_hotplug_event
, 0))
254 // Receive network link events form kernel
255 nl_socket_add_membership(rtnl_event
.sock
, RTNLGRP_LINK
);
260 static void system_set_sysctl(const char *path
, const char *val
)
264 fd
= open(path
, O_WRONLY
);
268 if (write(fd
, val
, strlen(val
))) {}
272 static void system_set_dev_sysctl(const char *path
, const char *device
, const char *val
)
274 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
275 system_set_sysctl(dev_buf
, val
);
278 static void system_set_disable_ipv6(struct device
*dev
, const char *val
)
280 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev
->ifname
, val
);
283 static void system_set_rpfilter(struct device
*dev
, const char *val
)
285 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter", dev
->ifname
, val
);
288 static void system_set_acceptlocal(struct device
*dev
, const char *val
)
290 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local", dev
->ifname
, val
);
293 static void system_set_igmpversion(struct device
*dev
, const char *val
)
295 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version", dev
->ifname
, val
);
298 static void system_set_mldversion(struct device
*dev
, const char *val
)
300 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version", dev
->ifname
, val
);
303 static void system_set_neigh4reachabletime(struct device
*dev
, const char *val
)
305 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
308 static void system_set_neigh6reachabletime(struct device
*dev
, const char *val
)
310 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
313 static void system_set_dadtransmits(struct device
*dev
, const char *val
)
315 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits", dev
->ifname
, val
);
318 static void system_bridge_set_multicast_to_unicast(struct device
*dev
, const char *val
)
320 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_to_unicast", dev
->ifname
, val
);
323 static void system_bridge_set_hairpin_mode(struct device
*dev
, const char *val
)
325 system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev
->ifname
, val
);
328 static void system_bridge_set_multicast_router(struct device
*dev
, const char *val
, bool bridge
)
330 system_set_dev_sysctl(bridge
? "/sys/class/net/%s/bridge/multicast_router" :
331 "/sys/class/net/%s/brport/multicast_router",
335 static void system_bridge_set_robustness(struct device
*dev
, const char *val
)
337 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_count",
339 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_count",
343 static void system_bridge_set_query_interval(struct device
*dev
, const char *val
)
345 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_interval",
349 static void system_bridge_set_query_response_interval(struct device
*dev
, const char *val
)
351 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_response_interval",
355 static void system_bridge_set_last_member_interval(struct device
*dev
, const char *val
)
357 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_interval",
361 static void system_bridge_set_membership_interval(struct device
*dev
, const char *val
)
363 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_membership_interval",
367 static void system_bridge_set_other_querier_timeout(struct device
*dev
, const char *val
)
369 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier_interval",
373 static void system_bridge_set_startup_query_interval(struct device
*dev
, const char *val
)
375 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_interval",
379 static int system_get_sysctl(const char *path
, char *buf
, const size_t buf_sz
)
381 int fd
= -1, ret
= -1;
383 fd
= open(path
, O_RDONLY
);
387 ssize_t len
= read(fd
, buf
, buf_sz
- 1);
401 system_get_dev_sysctl(const char *path
, const char *device
, char *buf
, const size_t buf_sz
)
403 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
404 return system_get_sysctl(dev_buf
, buf
, buf_sz
);
407 static int system_get_disable_ipv6(struct device
*dev
, char *buf
, const size_t buf_sz
)
409 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
410 dev
->ifname
, buf
, buf_sz
);
413 static int system_get_rpfilter(struct device
*dev
, char *buf
, const size_t buf_sz
)
415 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
416 dev
->ifname
, buf
, buf_sz
);
419 static int system_get_acceptlocal(struct device
*dev
, char *buf
, const size_t buf_sz
)
421 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
422 dev
->ifname
, buf
, buf_sz
);
425 static int system_get_igmpversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
427 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
428 dev
->ifname
, buf
, buf_sz
);
431 static int system_get_mldversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
433 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
434 dev
->ifname
, buf
, buf_sz
);
437 static int system_get_neigh4reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
439 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
440 dev
->ifname
, buf
, buf_sz
);
443 static int system_get_neigh6reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
445 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
446 dev
->ifname
, buf
, buf_sz
);
449 static int system_get_dadtransmits(struct device
*dev
, char *buf
, const size_t buf_sz
)
451 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
452 dev
->ifname
, buf
, buf_sz
);
455 // Evaluate netlink messages
456 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
458 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
459 struct nlattr
*nla
[__IFLA_MAX
];
463 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
466 nlmsg_parse(nh
, sizeof(struct ifinfomsg
), nla
, __IFLA_MAX
- 1, NULL
);
467 if (!nla
[IFLA_IFNAME
])
470 struct device
*dev
= device_get(nla_data(nla
[IFLA_IFNAME
]), false);
474 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev
->ifname
, buf
, sizeof(buf
)))
475 link_state
= strtoul(buf
, NULL
, 0);
477 device_set_link(dev
, link_state
? true : false);
484 handle_hotplug_msg(char *data
, int size
)
486 const char *subsystem
= NULL
, *interface
= NULL
;
487 char *cur
, *end
, *sep
;
492 if (!strncmp(data
, "add@", 4))
494 else if (!strncmp(data
, "remove@", 7))
499 skip
= strlen(data
) + 1;
502 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
503 skip
= strlen(cur
) + 1;
505 sep
= strchr(cur
, '=');
510 if (!strcmp(cur
, "INTERFACE"))
512 else if (!strcmp(cur
, "SUBSYSTEM")) {
514 if (strcmp(subsystem
, "net") != 0)
517 if (subsystem
&& interface
)
523 dev
= device_get(interface
, false);
527 if (dev
->type
!= &simple_device_type
)
530 if (add
&& system_if_force_external(dev
->ifname
))
533 device_set_present(dev
, add
);
537 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
539 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
540 struct sockaddr_nl nla
;
541 unsigned char *buf
= NULL
;
544 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
546 handle_hotplug_msg((char *) buf
, size
);
552 static int system_rtnl_call(struct nl_msg
*msg
)
556 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
562 return nl_wait_for_ack(sock_rtnl
);
565 int system_bridge_delbr(struct device
*bridge
)
567 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
570 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
574 memset(&ifr
, 0, sizeof(ifr
));
576 ifr
.ifr_ifindex
= dev
->ifindex
;
579 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
));
580 return ioctl(sock_ioctl
, cmd
, &ifr
);
583 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
587 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
588 if (stat(buf
, &st
) < 0)
594 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
600 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
601 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
605 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
613 path
= strrchr(buf
, '/');
621 system_bridge_set_wireless(struct device
*bridge
, struct device
*dev
)
623 bool mcast_to_ucast
= dev
->wireless_ap
;
626 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_TO_UNICAST
&&
627 !bridge
->settings
.multicast_to_unicast
)
628 mcast_to_ucast
= false;
630 if (!mcast_to_ucast
|| dev
->wireless_isolate
)
633 system_bridge_set_multicast_to_unicast(dev
, mcast_to_ucast
? "1" : "0");
634 system_bridge_set_hairpin_mode(dev
, hairpin
? "1" : "0");
637 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
643 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
644 if (!oldbr
|| strcmp(oldbr
, bridge
->ifname
) != 0)
645 ret
= system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
648 system_bridge_set_wireless(bridge
, dev
);
650 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
651 snprintf(buf
, sizeof(buf
), "%i", dev
->settings
.multicast_router
);
652 system_bridge_set_multicast_router(dev
, buf
, false);
658 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
660 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
663 int system_if_resolve(struct device
*dev
)
666 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
667 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
668 return ifr
.ifr_ifindex
;
673 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
677 memset(&ifr
, 0, sizeof(ifr
));
678 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
));
679 ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
);
680 ifr
.ifr_flags
|= add
;
681 ifr
.ifr_flags
&= ~rem
;
682 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
694 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
696 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
698 return ifa
->ifa_index
== ifindex
;
701 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
703 struct rtmsg
*r
= NLMSG_DATA(hdr
);
704 struct nlattr
*tb
[__RTA_MAX
];
706 if (r
->rtm_protocol
== RTPROT_KERNEL
&&
707 r
->rtm_family
== AF_INET6
)
710 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
714 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
717 static bool check_rule(struct nlmsghdr
*hdr
, int ifindex
)
722 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
724 struct clear_data
*clr
= arg
;
725 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
726 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
732 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
739 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
746 if (hdr
->nlmsg_type
!= RTM_NEWRULE
)
755 if (!cb(hdr
, clr
->dev
? clr
->dev
->ifindex
: 0))
758 if (type
== RTM_DELRULE
)
759 D(SYSTEM
, "Remove a rule\n");
761 D(SYSTEM
, "Remove %s from device %s\n",
762 type
== RTM_DELADDR
? "an address" : "a route",
764 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
765 hdr
= nlmsg_hdr(clr
->msg
);
766 hdr
->nlmsg_type
= type
;
767 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
769 nl_socket_disable_auto_ack(sock_rtnl
);
770 nl_send_auto_complete(sock_rtnl
, clr
->msg
);
771 nl_socket_enable_auto_ack(sock_rtnl
);
777 cb_finish_event(struct nl_msg
*msg
, void *arg
)
785 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
788 *pending
= err
->error
;
793 system_if_clear_entries(struct device
*dev
, int type
, int af
)
795 struct clear_data clr
;
796 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
799 .rtm_flags
= RTM_F_CLONED
,
801 int flags
= NLM_F_DUMP
;
810 clr
.size
= sizeof(struct rtgenmsg
);
813 clr
.size
= sizeof(struct rtmsg
);
822 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
826 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
827 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
828 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
829 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
831 nl_send_auto_complete(sock_rtnl
, clr
.msg
);
833 nl_recvmsgs(sock_rtnl
, cb
);
841 * Clear bridge (membership) state and bring down device
843 void system_if_clear_state(struct device
*dev
)
845 static char buf
[256];
848 device_set_ifindex(dev
, system_if_resolve(dev
));
849 if (dev
->external
|| !dev
->ifindex
)
852 system_if_flags(dev
->ifname
, 0, IFF_UP
);
854 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
855 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
856 system_bridge_delbr(dev
);
860 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
862 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
863 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
866 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
867 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
868 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
869 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
870 system_set_disable_ipv6(dev
, "0");
873 static inline unsigned long
874 sec_to_jiffies(int val
)
876 return (unsigned long) val
* 100;
879 static void system_bridge_conf_multicast_deps(struct device
*bridge
,
880 struct bridge_config
*cfg
,
886 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
||
887 cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
||
888 cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
889 val
= cfg
->robustness
* cfg
->query_interval
+
890 cfg
->query_response_interval
;
892 snprintf(buf
, buf_len
, "%i", val
);
893 system_bridge_set_membership_interval(bridge
, buf
);
895 val
= cfg
->robustness
* cfg
->query_interval
+
896 cfg
->query_response_interval
/ 2;
898 snprintf(buf
, buf_len
, "%i", val
);
899 system_bridge_set_other_querier_timeout(bridge
, buf
);
902 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
903 val
= cfg
->query_interval
/ 4;
905 snprintf(buf
, buf_len
, "%i", val
);
906 system_bridge_set_startup_query_interval(bridge
, buf
);
910 static void system_bridge_conf_multicast(struct device
*bridge
,
911 struct bridge_config
*cfg
,
915 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
916 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
918 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
919 bridge
->ifname
, cfg
->multicast_querier
? "1" : "0");
921 snprintf(buf
, buf_len
, "%i", cfg
->hash_max
);
922 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
923 bridge
->ifname
, buf
);
925 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
926 snprintf(buf
, buf_len
, "%i", bridge
->settings
.multicast_router
);
927 system_bridge_set_multicast_router(bridge
, buf
, true);
930 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
) {
931 snprintf(buf
, buf_len
, "%i", cfg
->robustness
);
932 system_bridge_set_robustness(bridge
, buf
);
935 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
936 snprintf(buf
, buf_len
, "%i", cfg
->query_interval
);
937 system_bridge_set_query_interval(bridge
, buf
);
940 if (cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
941 snprintf(buf
, buf_len
, "%i", cfg
->query_response_interval
);
942 system_bridge_set_query_response_interval(bridge
, buf
);
945 if (cfg
->flags
& BRIDGE_OPT_LAST_MEMBER_INTERVAL
) {
946 snprintf(buf
, buf_len
, "%i", cfg
->last_member_interval
);
947 system_bridge_set_last_member_interval(bridge
, buf
);
950 system_bridge_conf_multicast_deps(bridge
, cfg
, buf
, buf_len
);
953 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
956 unsigned long args
[4] = {};
958 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
961 args
[0] = BRCTL_SET_BRIDGE_STP_STATE
;
962 args
[1] = !!cfg
->stp
;
963 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
965 args
[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY
;
966 args
[1] = sec_to_jiffies(cfg
->forward_delay
);
967 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
969 system_bridge_conf_multicast(bridge
, cfg
, buf
, sizeof(buf
));
971 args
[0] = BRCTL_SET_BRIDGE_PRIORITY
;
972 args
[1] = cfg
->priority
;
973 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
975 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
976 args
[0] = BRCTL_SET_AGEING_TIME
;
977 args
[1] = sec_to_jiffies(cfg
->ageing_time
);
978 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
981 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
982 args
[0] = BRCTL_SET_BRIDGE_HELLO_TIME
;
983 args
[1] = sec_to_jiffies(cfg
->hello_time
);
984 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
987 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
988 args
[0] = BRCTL_SET_BRIDGE_MAX_AGE
;
989 args
[1] = sec_to_jiffies(cfg
->max_age
);
990 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
996 int system_macvlan_add(struct device
*macvlan
, struct device
*dev
, struct macvlan_config
*cfg
)
999 struct nlattr
*linkinfo
, *data
;
1000 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
1002 static const struct {
1004 enum macvlan_mode val
;
1006 { "private", MACVLAN_MODE_PRIVATE
},
1007 { "vepa", MACVLAN_MODE_VEPA
},
1008 { "bridge", MACVLAN_MODE_BRIDGE
},
1009 { "passthru", MACVLAN_MODE_PASSTHRU
},
1012 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1017 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1019 if (cfg
->flags
& MACVLAN_OPT_MACADDR
)
1020 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1021 nla_put_string(msg
, IFLA_IFNAME
, macvlan
->ifname
);
1022 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1024 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1025 goto nla_put_failure
;
1027 nla_put_string(msg
, IFLA_INFO_KIND
, "macvlan");
1029 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1030 goto nla_put_failure
;
1033 for (i
= 0; i
< ARRAY_SIZE(modes
); i
++) {
1034 if (strcmp(cfg
->mode
, modes
[i
].name
) != 0)
1037 nla_put_u32(msg
, IFLA_MACVLAN_MODE
, modes
[i
].val
);
1042 nla_nest_end(msg
, data
);
1043 nla_nest_end(msg
, linkinfo
);
1045 rv
= system_rtnl_call(msg
);
1047 D(SYSTEM
, "Error adding macvlan '%s' over '%s': %d\n", macvlan
->ifname
, dev
->ifname
, rv
);
1056 static int system_link_del(const char *ifname
)
1059 struct ifinfomsg iim
= {
1060 .ifi_family
= AF_UNSPEC
,
1064 msg
= nlmsg_alloc_simple(RTM_DELLINK
, NLM_F_REQUEST
);
1069 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1070 nla_put_string(msg
, IFLA_IFNAME
, ifname
);
1071 return system_rtnl_call(msg
);
1074 int system_macvlan_del(struct device
*macvlan
)
1076 return system_link_del(macvlan
->ifname
);
1079 static int system_vlan(struct device
*dev
, int id
)
1081 struct vlan_ioctl_args ifr
= {
1082 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
1083 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
1086 ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1089 ifr
.cmd
= DEL_VLAN_CMD
;
1092 ifr
.cmd
= ADD_VLAN_CMD
;
1095 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
1096 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1099 int system_vlan_add(struct device
*dev
, int id
)
1101 return system_vlan(dev
, id
);
1104 int system_vlan_del(struct device
*dev
)
1106 return system_vlan(dev
, -1);
1109 int system_vlandev_add(struct device
*vlandev
, struct device
*dev
, struct vlandev_config
*cfg
)
1112 struct nlattr
*linkinfo
, *data
;
1113 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
};
1116 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1121 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1122 nla_put_string(msg
, IFLA_IFNAME
, vlandev
->ifname
);
1123 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1125 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1126 goto nla_put_failure
;
1128 nla_put_string(msg
, IFLA_INFO_KIND
, "vlan");
1130 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1131 goto nla_put_failure
;
1133 nla_put_u16(msg
, IFLA_VLAN_ID
, cfg
->vid
);
1135 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1136 nla_put_u16(msg
, IFLA_VLAN_PROTOCOL
, htons(cfg
->proto
));
1138 if(cfg
->proto
== VLAN_PROTO_8021AD
)
1139 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
);
1142 nla_nest_end(msg
, data
);
1143 nla_nest_end(msg
, linkinfo
);
1145 rv
= system_rtnl_call(msg
);
1147 D(SYSTEM
, "Error adding vlandev '%s' over '%s': %d\n", vlandev
->ifname
, dev
->ifname
, rv
);
1156 int system_vlandev_del(struct device
*vlandev
)
1158 return system_link_del(vlandev
->ifname
);
1162 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
1167 memset(&ifr
, 0, sizeof(ifr
));
1168 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1170 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
1171 s
->mtu
= ifr
.ifr_mtu
;
1172 s
->flags
|= DEV_OPT_MTU
;
1175 s
->mtu6
= system_update_ipv6_mtu(dev
, 0);
1177 s
->flags
|= DEV_OPT_MTU6
;
1179 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
1180 s
->txqueuelen
= ifr
.ifr_qlen
;
1181 s
->flags
|= DEV_OPT_TXQUEUELEN
;
1184 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
1185 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
1186 s
->flags
|= DEV_OPT_MACADDR
;
1189 if (!system_get_disable_ipv6(dev
, buf
, sizeof(buf
))) {
1190 s
->ipv6
= !strtoul(buf
, NULL
, 0);
1191 s
->flags
|= DEV_OPT_IPV6
;
1194 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) == 0) {
1195 s
->promisc
= ifr
.ifr_flags
& IFF_PROMISC
;
1196 s
->flags
|= DEV_OPT_PROMISC
;
1198 s
->multicast
= ifr
.ifr_flags
& IFF_MULTICAST
;
1199 s
->flags
|= DEV_OPT_MULTICAST
;
1202 if (!system_get_rpfilter(dev
, buf
, sizeof(buf
))) {
1203 s
->rpfilter
= strtoul(buf
, NULL
, 0);
1204 s
->flags
|= DEV_OPT_RPFILTER
;
1207 if (!system_get_acceptlocal(dev
, buf
, sizeof(buf
))) {
1208 s
->acceptlocal
= strtoul(buf
, NULL
, 0);
1209 s
->flags
|= DEV_OPT_ACCEPTLOCAL
;
1212 if (!system_get_igmpversion(dev
, buf
, sizeof(buf
))) {
1213 s
->igmpversion
= strtoul(buf
, NULL
, 0);
1214 s
->flags
|= DEV_OPT_IGMPVERSION
;
1217 if (!system_get_mldversion(dev
, buf
, sizeof(buf
))) {
1218 s
->mldversion
= strtoul(buf
, NULL
, 0);
1219 s
->flags
|= DEV_OPT_MLDVERSION
;
1222 if (!system_get_neigh4reachabletime(dev
, buf
, sizeof(buf
))) {
1223 s
->neigh4reachabletime
= strtoul(buf
, NULL
, 0);
1224 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1227 if (!system_get_neigh6reachabletime(dev
, buf
, sizeof(buf
))) {
1228 s
->neigh6reachabletime
= strtoul(buf
, NULL
, 0);
1229 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1232 if (!system_get_dadtransmits(dev
, buf
, sizeof(buf
))) {
1233 s
->dadtransmits
= strtoul(buf
, NULL
, 0);
1234 s
->flags
|= DEV_OPT_DADTRANSMITS
;
1239 system_if_set_rps_xps_val(const char *path
, int val
)
1245 if (glob(path
, 0, NULL
, &gl
))
1248 snprintf(val_buf
, sizeof(val_buf
), "%x", val
);
1249 for (i
= 0; i
< gl
.gl_pathc
; i
++)
1250 system_set_sysctl(gl
.gl_pathv
[i
], val_buf
);
1256 system_if_apply_rps_xps(struct device
*dev
, struct device_settings
*s
)
1258 long n_cpus
= sysconf(_SC_NPROCESSORS_ONLN
);
1264 val
= (1 << n_cpus
) - 1;
1265 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/rps_cpus", dev
->ifname
);
1266 system_if_set_rps_xps_val(dev_buf
, s
->rps
? val
: 0);
1268 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/xps_cpus", dev
->ifname
);
1269 system_if_set_rps_xps_val(dev_buf
, s
->xps
? val
: 0);
1273 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
, unsigned int apply_mask
)
1278 memset(&ifr
, 0, sizeof(ifr
));
1279 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1280 if (s
->flags
& DEV_OPT_MTU
& apply_mask
) {
1281 ifr
.ifr_mtu
= s
->mtu
;
1282 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
1283 s
->flags
&= ~DEV_OPT_MTU
;
1285 if (s
->flags
& DEV_OPT_MTU6
& apply_mask
) {
1286 system_update_ipv6_mtu(dev
, s
->mtu6
);
1288 if (s
->flags
& DEV_OPT_TXQUEUELEN
& apply_mask
) {
1289 ifr
.ifr_qlen
= s
->txqueuelen
;
1290 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
1291 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
1293 if ((s
->flags
& DEV_OPT_MACADDR
& apply_mask
) && !dev
->external
) {
1294 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
1295 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
1296 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
1297 s
->flags
&= ~DEV_OPT_MACADDR
;
1299 if (s
->flags
& DEV_OPT_IPV6
& apply_mask
)
1300 system_set_disable_ipv6(dev
, s
->ipv6
? "0" : "1");
1301 if (s
->flags
& DEV_OPT_PROMISC
& apply_mask
) {
1302 if (system_if_flags(dev
->ifname
, s
->promisc
? IFF_PROMISC
: 0,
1303 !s
->promisc
? IFF_PROMISC
: 0) < 0)
1304 s
->flags
&= ~DEV_OPT_PROMISC
;
1306 if (s
->flags
& DEV_OPT_RPFILTER
& apply_mask
) {
1307 snprintf(buf
, sizeof(buf
), "%d", s
->rpfilter
);
1308 system_set_rpfilter(dev
, buf
);
1310 if (s
->flags
& DEV_OPT_ACCEPTLOCAL
& apply_mask
)
1311 system_set_acceptlocal(dev
, s
->acceptlocal
? "1" : "0");
1312 if (s
->flags
& DEV_OPT_IGMPVERSION
& apply_mask
) {
1313 snprintf(buf
, sizeof(buf
), "%d", s
->igmpversion
);
1314 system_set_igmpversion(dev
, buf
);
1316 if (s
->flags
& DEV_OPT_MLDVERSION
& apply_mask
) {
1317 snprintf(buf
, sizeof(buf
), "%d", s
->mldversion
);
1318 system_set_mldversion(dev
, buf
);
1320 if (s
->flags
& DEV_OPT_NEIGHREACHABLETIME
& apply_mask
) {
1321 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4reachabletime
);
1322 system_set_neigh4reachabletime(dev
, buf
);
1323 snprintf(buf
, sizeof(buf
), "%d", s
->neigh6reachabletime
);
1324 system_set_neigh6reachabletime(dev
, buf
);
1326 if (s
->flags
& DEV_OPT_DADTRANSMITS
& apply_mask
) {
1327 snprintf(buf
, sizeof(buf
), "%d", s
->dadtransmits
);
1328 system_set_dadtransmits(dev
, buf
);
1330 if (s
->flags
& DEV_OPT_MULTICAST
& apply_mask
) {
1331 if (system_if_flags(dev
->ifname
, s
->multicast
? IFF_MULTICAST
: 0,
1332 !s
->multicast
? IFF_MULTICAST
: 0) < 0)
1333 s
->flags
&= ~DEV_OPT_MULTICAST
;
1336 system_if_apply_rps_xps(dev
, s
);
1339 int system_if_up(struct device
*dev
)
1341 system_if_get_settings(dev
, &dev
->orig_settings
);
1342 /* Only keep orig settings based on what needs to be set */
1343 dev
->orig_settings
.valid_flags
= dev
->orig_settings
.flags
;
1344 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
1345 system_if_apply_settings(dev
, &dev
->settings
, dev
->settings
.flags
);
1346 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
1349 int system_if_down(struct device
*dev
)
1351 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
1352 system_if_apply_settings(dev
, &dev
->orig_settings
, dev
->orig_settings
.flags
);
1356 struct if_check_data
{
1362 #ifndef IFF_LOWER_UP
1363 #define IFF_LOWER_UP 0x10000
1366 static int cb_if_check_valid(struct nl_msg
*msg
, void *arg
)
1368 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
1369 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
1370 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1372 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
1375 device_set_present(chk
->dev
, ifi
->ifi_index
> 0 ? true : false);
1376 device_set_link(chk
->dev
, ifi
->ifi_flags
& IFF_LOWER_UP
? true : false);
1381 static int cb_if_check_ack(struct nl_msg
*msg
, void *arg
)
1383 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1388 static int cb_if_check_error(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
1390 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1392 device_set_present(chk
->dev
, false);
1393 device_set_link(chk
->dev
, false);
1394 chk
->pending
= err
->error
;
1399 int system_if_check(struct device
*dev
)
1401 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1403 struct ifinfomsg ifi
= {
1404 .ifi_family
= AF_UNSPEC
,
1407 struct if_check_data chk
= {
1413 msg
= nlmsg_alloc_simple(RTM_GETLINK
, 0);
1417 if (nlmsg_append(msg
, &ifi
, sizeof(ifi
), 0) ||
1418 nla_put_string(msg
, IFLA_IFNAME
, dev
->ifname
))
1421 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_if_check_valid
, &chk
);
1422 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, cb_if_check_ack
, &chk
);
1423 nl_cb_err(cb
, NL_CB_CUSTOM
, cb_if_check_error
, &chk
);
1425 nl_send_auto_complete(sock_rtnl
, msg
);
1426 while (chk
.pending
> 0)
1427 nl_recvmsgs(sock_rtnl
, cb
);
1439 system_if_get_parent(struct device
*dev
)
1441 char buf
[64], *devname
;
1442 int ifindex
, iflink
, len
;
1445 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
1446 f
= fopen(buf
, "r");
1450 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
1457 iflink
= strtoul(buf
, NULL
, 0);
1458 ifindex
= system_if_resolve(dev
);
1459 if (!iflink
|| iflink
== ifindex
)
1462 devname
= if_indextoname(iflink
, buf
);
1466 return device_get(devname
, true);
1470 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
1476 fd
= openat(dir_fd
, file
, O_RDONLY
);
1481 len
= read(fd
, buf
, len
- 1);
1485 } else if (len
> 0) {
1488 c
= strchr(buf
, '\n');
1501 read_uint64_file(int dir_fd
, const char *file
, uint64_t *val
)
1506 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
1508 *val
= strtoull(buf
, NULL
, 0);
1513 /* Assume advertised flags == supported flags */
1514 static const struct {
1517 } ethtool_link_modes
[] = {
1518 { ADVERTISED_10baseT_Half
, "10H" },
1519 { ADVERTISED_10baseT_Full
, "10F" },
1520 { ADVERTISED_100baseT_Half
, "100H" },
1521 { ADVERTISED_100baseT_Full
, "100F" },
1522 { ADVERTISED_1000baseT_Half
, "1000H" },
1523 { ADVERTISED_1000baseT_Full
, "1000F" },
1526 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
1529 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
1530 if (mask
& ethtool_link_modes
[i
].mask
)
1531 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
1536 system_if_force_external(const char *ifname
)
1541 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/phy80211", ifname
);
1542 return stat(buf
, &s
) == 0;
1546 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
1548 struct ethtool_cmd ecmd
;
1554 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s", dev
->ifname
);
1555 dir_fd
= open(buf
, O_DIRECTORY
);
1557 memset(&ecmd
, 0, sizeof(ecmd
));
1558 memset(&ifr
, 0, sizeof(ifr
));
1559 strcpy(ifr
.ifr_name
, dev
->ifname
);
1560 ifr
.ifr_data
= (caddr_t
) &ecmd
;
1561 ecmd
.cmd
= ETHTOOL_GSET
;
1563 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
1564 c
= blobmsg_open_array(b
, "link-advertising");
1565 system_add_link_modes(b
, ecmd
.advertising
);
1566 blobmsg_close_array(b
, c
);
1568 c
= blobmsg_open_array(b
, "link-supported");
1569 system_add_link_modes(b
, ecmd
.supported
);
1570 blobmsg_close_array(b
, c
);
1572 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
1573 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
1574 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
1575 blobmsg_add_string_buffer(b
);
1583 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
1585 const char *const counters
[] = {
1586 "collisions", "rx_frame_errors", "tx_compressed",
1587 "multicast", "rx_length_errors", "tx_dropped",
1588 "rx_bytes", "rx_missed_errors", "tx_errors",
1589 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1590 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1591 "rx_dropped", "tx_aborted_errors", "tx_packets",
1592 "rx_errors", "tx_bytes", "tx_window_errors",
1593 "rx_fifo_errors", "tx_carrier_errors",
1600 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
1601 stats_dir
= open(buf
, O_DIRECTORY
);
1605 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
1606 if (read_uint64_file(stats_dir
, counters
[i
], &val
))
1607 blobmsg_add_u64(b
, counters
[i
], val
);
1613 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
1615 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
1616 int alen
= v4
? 4 : 16;
1617 unsigned int flags
= 0;
1618 struct ifaddrmsg ifa
= {
1619 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1620 .ifa_prefixlen
= addr
->mask
,
1621 .ifa_index
= dev
->ifindex
,
1625 if (cmd
== RTM_NEWADDR
)
1626 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1628 msg
= nlmsg_alloc_simple(cmd
, flags
);
1632 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
1633 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
1635 if (addr
->broadcast
)
1636 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
1637 if (addr
->point_to_point
)
1638 nla_put_u32(msg
, IFA_ADDRESS
, addr
->point_to_point
);
1640 time_t now
= system_get_rtime();
1641 struct ifa_cacheinfo cinfo
= {0xffffffffU
, 0xffffffffU
, 0, 0};
1643 if (addr
->preferred_until
) {
1644 int64_t preferred
= addr
->preferred_until
- now
;
1647 else if (preferred
> UINT32_MAX
)
1648 preferred
= UINT32_MAX
;
1650 cinfo
.ifa_prefered
= preferred
;
1653 if (addr
->valid_until
) {
1654 int64_t valid
= addr
->valid_until
- now
;
1659 else if (valid
> UINT32_MAX
)
1662 cinfo
.ifa_valid
= valid
;
1665 nla_put(msg
, IFA_CACHEINFO
, sizeof(cinfo
), &cinfo
);
1667 if (cmd
== RTM_NEWADDR
&& (addr
->flags
& DEVADDR_OFFLINK
))
1668 nla_put_u32(msg
, IFA_FLAGS
, IFA_F_NOPREFIXROUTE
);
1671 return system_rtnl_call(msg
);
1674 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
1676 return system_addr(dev
, addr
, RTM_NEWADDR
);
1679 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
1681 return system_addr(dev
, addr
, RTM_DELADDR
);
1684 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
1686 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
1688 unsigned int flags
= 0;
1691 have_gw
= !!route
->nexthop
.in
.s_addr
;
1693 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
1694 route
->nexthop
.in6
.s6_addr32
[1] ||
1695 route
->nexthop
.in6
.s6_addr32
[2] ||
1696 route
->nexthop
.in6
.s6_addr32
[3];
1698 unsigned int table
= (route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))
1699 ? route
->table
: RT_TABLE_MAIN
;
1701 struct rtmsg rtm
= {
1702 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1703 .rtm_dst_len
= route
->mask
,
1704 .rtm_src_len
= route
->sourcemask
,
1705 .rtm_table
= (table
< 256) ? table
: RT_TABLE_UNSPEC
,
1706 .rtm_protocol
= (route
->flags
& DEVADDR_KERNEL
) ? RTPROT_KERNEL
: RTPROT_STATIC
,
1707 .rtm_scope
= RT_SCOPE_NOWHERE
,
1708 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
1709 .rtm_flags
= (route
->flags
& DEVROUTE_ONLINK
) ? RTNH_F_ONLINK
: 0,
1713 if (cmd
== RTM_NEWROUTE
) {
1714 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1716 if (!dev
) { // Add null-route
1717 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1718 rtm
.rtm_type
= RTN_UNREACHABLE
;
1721 rtm
.rtm_scope
= (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
1724 if (route
->flags
& DEVROUTE_TYPE
) {
1725 rtm
.rtm_type
= route
->type
;
1726 if (!(route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))) {
1727 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_BROADCAST
||
1728 rtm
.rtm_type
== RTN_NAT
|| rtm
.rtm_type
== RTN_ANYCAST
)
1729 rtm
.rtm_table
= RT_TABLE_LOCAL
;
1732 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_NAT
) {
1733 rtm
.rtm_scope
= RT_SCOPE_HOST
;
1734 } else if (rtm
.rtm_type
== RTN_BROADCAST
|| rtm
.rtm_type
== RTN_MULTICAST
||
1735 rtm
.rtm_type
== RTN_ANYCAST
) {
1736 rtm
.rtm_scope
= RT_SCOPE_LINK
;
1737 } else if (rtm
.rtm_type
== RTN_BLACKHOLE
|| rtm
.rtm_type
== RTN_UNREACHABLE
||
1738 rtm
.rtm_type
== RTN_PROHIBIT
|| rtm
.rtm_type
== RTN_FAILED_POLICY
) {
1739 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1744 msg
= nlmsg_alloc_simple(cmd
, flags
);
1748 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
1751 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
1753 if (route
->sourcemask
) {
1754 if (rtm
.rtm_family
== AF_INET
)
1755 nla_put(msg
, RTA_PREFSRC
, alen
, &route
->source
);
1757 nla_put(msg
, RTA_SRC
, alen
, &route
->source
);
1760 if (route
->metric
> 0)
1761 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
1764 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
1767 nla_put_u32(msg
, RTA_OIF
, dev
->ifindex
);
1770 nla_put_u32(msg
, RTA_TABLE
, table
);
1772 if (route
->flags
& DEVROUTE_MTU
) {
1773 struct nlattr
*metrics
;
1775 if (!(metrics
= nla_nest_start(msg
, RTA_METRICS
)))
1776 goto nla_put_failure
;
1778 nla_put_u32(msg
, RTAX_MTU
, route
->mtu
);
1780 nla_nest_end(msg
, metrics
);
1783 return system_rtnl_call(msg
);
1790 int system_add_route(struct device
*dev
, struct device_route
*route
)
1792 return system_rt(dev
, route
, RTM_NEWROUTE
);
1795 int system_del_route(struct device
*dev
, struct device_route
*route
)
1797 return system_rt(dev
, route
, RTM_DELROUTE
);
1800 int system_flush_routes(void)
1802 const char *names
[] = {
1803 "/proc/sys/net/ipv4/route/flush",
1804 "/proc/sys/net/ipv6/route/flush"
1808 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
1809 fd
= open(names
[i
], O_WRONLY
);
1813 if (write(fd
, "-1", 2)) {}
1819 bool system_resolve_rt_type(const char *type
, unsigned int *id
)
1821 return system_rtn_aton(type
, id
);
1824 bool system_resolve_rt_table(const char *name
, unsigned int *id
)
1828 unsigned int n
, table
= RT_TABLE_UNSPEC
;
1830 /* first try to parse table as number */
1831 if ((n
= strtoul(name
, &e
, 0)) > 0 && !*e
)
1834 /* handle well known aliases */
1835 else if (!strcmp(name
, "default"))
1836 table
= RT_TABLE_DEFAULT
;
1837 else if (!strcmp(name
, "main"))
1838 table
= RT_TABLE_MAIN
;
1839 else if (!strcmp(name
, "local"))
1840 table
= RT_TABLE_LOCAL
;
1841 else if (!strcmp(name
, "prelocal"))
1842 table
= RT_TABLE_PRELOCAL
;
1844 /* try to look up name in /etc/iproute2/rt_tables */
1845 else if ((f
= fopen("/etc/iproute2/rt_tables", "r")) != NULL
)
1847 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
)
1849 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
1852 n
= strtoul(e
, NULL
, 10);
1853 e
= strtok(NULL
, " \t\n");
1855 if (e
&& !strcmp(e
, name
))
1865 if (table
== RT_TABLE_UNSPEC
)
1872 bool system_is_default_rt_table(unsigned int id
)
1874 return (id
== RT_TABLE_MAIN
);
1877 bool system_resolve_rpfilter(const char *filter
, unsigned int *id
)
1882 if (!strcmp(filter
, "strict"))
1884 else if (!strcmp(filter
, "loose"))
1887 n
= strtoul(filter
, &e
, 0);
1888 if (*e
|| e
== filter
|| n
> 2)
1896 static int system_iprule(struct iprule
*rule
, int cmd
)
1898 int alen
= ((rule
->flags
& IPRULE_FAMILY
) == IPRULE_INET4
) ? 4 : 16;
1901 struct rtmsg rtm
= {
1902 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1903 .rtm_protocol
= RTPROT_STATIC
,
1904 .rtm_scope
= RT_SCOPE_UNIVERSE
,
1905 .rtm_table
= RT_TABLE_UNSPEC
,
1906 .rtm_type
= RTN_UNSPEC
,
1910 if (cmd
== RTM_NEWRULE
)
1911 rtm
.rtm_type
= RTN_UNICAST
;
1914 rtm
.rtm_flags
|= FIB_RULE_INVERT
;
1916 if (rule
->flags
& IPRULE_SRC
)
1917 rtm
.rtm_src_len
= rule
->src_mask
;
1919 if (rule
->flags
& IPRULE_DEST
)
1920 rtm
.rtm_dst_len
= rule
->dest_mask
;
1922 if (rule
->flags
& IPRULE_TOS
)
1923 rtm
.rtm_tos
= rule
->tos
;
1925 if (rule
->flags
& IPRULE_LOOKUP
) {
1926 if (rule
->lookup
< 256)
1927 rtm
.rtm_table
= rule
->lookup
;
1930 if (rule
->flags
& IPRULE_ACTION
)
1931 rtm
.rtm_type
= rule
->action
;
1932 else if (rule
->flags
& IPRULE_GOTO
)
1933 rtm
.rtm_type
= FR_ACT_GOTO
;
1934 else if (!(rule
->flags
& (IPRULE_LOOKUP
| IPRULE_ACTION
| IPRULE_GOTO
)))
1935 rtm
.rtm_type
= FR_ACT_NOP
;
1937 msg
= nlmsg_alloc_simple(cmd
, NLM_F_REQUEST
);
1942 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
1944 if (rule
->flags
& IPRULE_IN
)
1945 nla_put(msg
, FRA_IFNAME
, strlen(rule
->in_dev
) + 1, rule
->in_dev
);
1947 if (rule
->flags
& IPRULE_OUT
)
1948 nla_put(msg
, FRA_OIFNAME
, strlen(rule
->out_dev
) + 1, rule
->out_dev
);
1950 if (rule
->flags
& IPRULE_SRC
)
1951 nla_put(msg
, FRA_SRC
, alen
, &rule
->src_addr
);
1953 if (rule
->flags
& IPRULE_DEST
)
1954 nla_put(msg
, FRA_DST
, alen
, &rule
->dest_addr
);
1956 if (rule
->flags
& IPRULE_PRIORITY
)
1957 nla_put_u32(msg
, FRA_PRIORITY
, rule
->priority
);
1958 else if (cmd
== RTM_NEWRULE
)
1959 nla_put_u32(msg
, FRA_PRIORITY
, rule
->order
);
1961 if (rule
->flags
& IPRULE_FWMARK
)
1962 nla_put_u32(msg
, FRA_FWMARK
, rule
->fwmark
);
1964 if (rule
->flags
& IPRULE_FWMASK
)
1965 nla_put_u32(msg
, FRA_FWMASK
, rule
->fwmask
);
1967 if (rule
->flags
& IPRULE_LOOKUP
) {
1968 if (rule
->lookup
>= 256)
1969 nla_put_u32(msg
, FRA_TABLE
, rule
->lookup
);
1972 if (rule
->flags
& IPRULE_GOTO
)
1973 nla_put_u32(msg
, FRA_GOTO
, rule
->gotoid
);
1975 return system_rtnl_call(msg
);
1978 int system_add_iprule(struct iprule
*rule
)
1980 return system_iprule(rule
, RTM_NEWRULE
);
1983 int system_del_iprule(struct iprule
*rule
)
1985 return system_iprule(rule
, RTM_DELRULE
);
1988 int system_flush_iprules(void)
1993 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET
);
1994 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET6
);
1996 memset(&rule
, 0, sizeof(rule
));
1999 rule
.flags
= IPRULE_INET4
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2002 rule
.lookup
= RT_TABLE_PRELOCAL
;
2003 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2006 rule
.lookup
= RT_TABLE_LOCAL
;
2007 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2009 rule
.priority
= 32766;
2010 rule
.lookup
= RT_TABLE_MAIN
;
2011 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2013 rule
.priority
= 32767;
2014 rule
.lookup
= RT_TABLE_DEFAULT
;
2015 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2018 rule
.flags
= IPRULE_INET6
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2021 rule
.lookup
= RT_TABLE_PRELOCAL
;
2022 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2025 rule
.lookup
= RT_TABLE_LOCAL
;
2026 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2028 rule
.priority
= 32766;
2029 rule
.lookup
= RT_TABLE_MAIN
;
2030 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2035 bool system_resolve_iprule_action(const char *action
, unsigned int *id
)
2037 return system_rtn_aton(action
, id
);
2040 time_t system_get_rtime(void)
2045 if (syscall(__NR_clock_gettime
, CLOCK_MONOTONIC
, &ts
) == 0)
2048 if (gettimeofday(&tv
, NULL
) == 0)
2055 #define IP_DF 0x4000
2058 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
2062 memset(&ifr
, 0, sizeof(ifr
));
2063 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
));
2064 ifr
.ifr_ifru
.ifru_data
= p
;
2065 return ioctl(sock_ioctl
, cmd
, &ifr
);
2068 #ifdef IFLA_IPTUN_MAX
2069 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
2070 static int system_add_gre_tunnel(const char *name
, const char *kind
,
2071 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2074 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2075 struct blob_attr
*cur
;
2076 uint32_t ikey
= 0, okey
= 0, flags
= 0, flowinfo
= 0;
2077 uint16_t iflags
= 0, oflags
= 0;
2079 int ret
= 0, ttl
= 64;
2081 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2085 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2086 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2088 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2094 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2095 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2102 nla_put_u32(nlm
, IFLA_GRE_LINK
, link
);
2104 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2105 ttl
= blobmsg_get_u32(cur
);
2107 nla_put_u8(nlm
, IFLA_GRE_TTL
, ttl
);
2109 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2110 char *str
= blobmsg_get_string(cur
);
2111 if (strcmp(str
, "inherit")) {
2114 if (!system_tos_aton(str
, &uval
)) {
2120 flowinfo
|= htonl(uval
<< 20) & IP6_FLOWINFO_TCLASS
;
2125 flags
|= IP6_TNL_F_USE_ORIG_TCLASS
;
2131 if ((cur
= tb
[TUNNEL_ATTR_INFO
]) && (blobmsg_type(cur
) == BLOBMSG_TYPE_STRING
)) {
2132 uint8_t icsum
, ocsum
, iseqno
, oseqno
;
2133 if (sscanf(blobmsg_get_string(cur
), "%u,%u,%hhu,%hhu,%hhu,%hhu",
2134 &ikey
, &okey
, &icsum
, &ocsum
, &iseqno
, &oseqno
) < 6) {
2159 struct in6_addr in6buf
;
2160 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2161 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2165 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(in6buf
), &in6buf
);
2168 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2169 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2173 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(in6buf
), &in6buf
);
2175 nla_put_u8(nlm
, IFLA_GRE_ENCAP_LIMIT
, 4);
2178 nla_put_u32(nlm
, IFLA_GRE_FLOWINFO
, flowinfo
);
2181 nla_put_u32(nlm
, IFLA_GRE_FLAGS
, flags
);
2183 struct in_addr inbuf
;
2186 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2187 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2191 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(inbuf
), &inbuf
);
2194 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2195 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2199 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(inbuf
), &inbuf
);
2201 if (IN_MULTICAST(ntohl(inbuf
.s_addr
))) {
2203 okey
= inbuf
.s_addr
;
2208 ikey
= inbuf
.s_addr
;
2214 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2215 set_df
= blobmsg_get_bool(cur
);
2217 /* ttl !=0 and nopmtudisc are incompatible */
2218 if (ttl
&& !set_df
) {
2223 nla_put_u8(nlm
, IFLA_GRE_PMTUDISC
, set_df
? 1 : 0);
2225 nla_put_u8(nlm
, IFLA_GRE_TOS
, tos
);
2229 nla_put_u16(nlm
, IFLA_GRE_OFLAGS
, oflags
);
2232 nla_put_u16(nlm
, IFLA_GRE_IFLAGS
, iflags
);
2235 nla_put_u32(nlm
, IFLA_GRE_OKEY
, okey
);
2238 nla_put_u32(nlm
, IFLA_GRE_IKEY
, ikey
);
2240 nla_nest_end(nlm
, infodata
);
2241 nla_nest_end(nlm
, linkinfo
);
2243 return system_rtnl_call(nlm
);
2252 static int system_add_vti_tunnel(const char *name
, const char *kind
,
2253 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2256 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2257 struct blob_attr
*cur
;
2258 uint32_t ikey
= 0, okey
= 0;
2261 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2265 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2266 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2268 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2274 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2275 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2282 nla_put_u32(nlm
, IFLA_VTI_LINK
, link
);
2284 if ((cur
= tb
[TUNNEL_ATTR_INFO
]) && (blobmsg_type(cur
) == BLOBMSG_TYPE_STRING
)) {
2285 if (sscanf(blobmsg_get_string(cur
), "%u,%u",
2286 &ikey
, &okey
) < 2) {
2293 struct in6_addr in6buf
;
2294 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2295 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2299 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(in6buf
), &in6buf
);
2302 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2303 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2307 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(in6buf
), &in6buf
);
2311 struct in_addr inbuf
;
2313 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2314 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2318 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(inbuf
), &inbuf
);
2321 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2322 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2326 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(inbuf
), &inbuf
);
2332 nla_put_u32(nlm
, IFLA_VTI_OKEY
, htonl(okey
));
2335 nla_put_u32(nlm
, IFLA_VTI_IKEY
, htonl(ikey
));
2337 nla_nest_end(nlm
, infodata
);
2338 nla_nest_end(nlm
, linkinfo
);
2340 return system_rtnl_call(nlm
);
2348 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
, const unsigned int link
, struct blob_attr
**tb
)
2350 struct blob_attr
*cur
;
2352 struct ip_tunnel_parm p
= {
2361 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
]) &&
2362 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.saddr
) < 1)
2365 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
]) &&
2366 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.daddr
) < 1)
2369 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2370 set_df
= blobmsg_get_bool(cur
);
2372 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2373 p
.iph
.ttl
= blobmsg_get_u32(cur
);
2375 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2376 char *str
= blobmsg_get_string(cur
);
2377 if (strcmp(str
, "inherit")) {
2380 if (!system_tos_aton(str
, &uval
))
2388 p
.iph
.frag_off
= set_df
? htons(IP_DF
) : 0;
2389 /* ttl !=0 and nopmtudisc are incompatible */
2390 if (p
.iph
.ttl
&& p
.iph
.frag_off
== 0)
2393 strncpy(p
.name
, name
, sizeof(p
.name
));
2395 switch (p
.iph
.protocol
) {
2397 return tunnel_ioctl("tunl0", SIOCADDTUNNEL
, &p
);
2399 return tunnel_ioctl("sit0", SIOCADDTUNNEL
, &p
);
2406 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
)
2408 struct blob_attr
*cur
;
2411 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2413 str
= blobmsg_data(cur
);
2415 if (!strcmp(str
, "greip") || !strcmp(str
, "gretapip") ||
2416 !strcmp(str
, "greip6") || !strcmp(str
, "gretapip6") ||
2417 !strcmp(str
, "vtiip") || !strcmp(str
, "vtiip6"))
2418 return system_link_del(name
);
2420 return tunnel_ioctl(name
, SIOCDELTUNNEL
, NULL
);
2423 int system_del_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2425 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2427 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2428 blob_data(attr
), blob_len(attr
));
2430 return __system_del_ip_tunnel(name
, tb
);
2433 int system_update_ipv6_mtu(struct device
*dev
, int mtu
)
2437 snprintf(buf
, sizeof(buf
), "/proc/sys/net/ipv6/conf/%s/mtu",
2440 int fd
= open(buf
, O_RDWR
);
2443 ssize_t len
= read(fd
, buf
, sizeof(buf
) - 1);
2450 if (write(fd
, buf
, snprintf(buf
, sizeof(buf
), "%i", mtu
)) > 0)
2459 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2461 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2462 struct blob_attr
*cur
;
2465 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2466 blob_data(attr
), blob_len(attr
));
2468 __system_del_ip_tunnel(name
, tb
);
2470 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2472 str
= blobmsg_data(cur
);
2474 unsigned int ttl
= 0;
2475 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
2476 ttl
= blobmsg_get_u32(cur
);
2481 unsigned int link
= 0;
2482 if ((cur
= tb
[TUNNEL_ATTR_LINK
])) {
2483 struct interface
*iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
2487 if (iface
->l3_dev
.dev
)
2488 link
= iface
->l3_dev
.dev
->ifindex
;
2491 if (!strcmp(str
, "sit")) {
2492 if (system_add_proto_tunnel(name
, IPPROTO_IPV6
, link
, tb
) < 0)
2496 if ((cur
= tb
[TUNNEL_ATTR_6RD_PREFIX
])) {
2498 struct ip_tunnel_6rd p6
;
2500 memset(&p6
, 0, sizeof(p6
));
2502 if (!parse_ip_and_netmask(AF_INET6
, blobmsg_data(cur
),
2503 &p6
.prefix
, &mask
) || mask
> 128)
2505 p6
.prefixlen
= mask
;
2507 if ((cur
= tb
[TUNNEL_ATTR_6RD_RELAY_PREFIX
])) {
2508 if (!parse_ip_and_netmask(AF_INET
, blobmsg_data(cur
),
2509 &p6
.relay_prefix
, &mask
) || mask
> 32)
2511 p6
.relay_prefixlen
= mask
;
2514 if (tunnel_ioctl(name
, SIOCADD6RD
, &p6
) < 0) {
2515 __system_del_ip_tunnel(name
, tb
);
2520 #ifdef IFLA_IPTUN_MAX
2521 } else if (!strcmp(str
, "ipip6")) {
2522 struct nl_msg
*nlm
= nlmsg_alloc_simple(RTM_NEWLINK
,
2523 NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2524 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
};
2530 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2531 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2534 nla_put_u32(nlm
, IFLA_LINK
, link
);
2536 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2541 nla_put_string(nlm
, IFLA_INFO_KIND
, "ip6tnl");
2542 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2549 nla_put_u32(nlm
, IFLA_IPTUN_LINK
, link
);
2551 nla_put_u8(nlm
, IFLA_IPTUN_PROTO
, IPPROTO_IPIP
);
2552 nla_put_u8(nlm
, IFLA_IPTUN_TTL
, (ttl
) ? ttl
: 64);
2553 nla_put_u8(nlm
, IFLA_IPTUN_ENCAP_LIMIT
, 4);
2555 struct in6_addr in6buf
;
2556 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2557 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2561 nla_put(nlm
, IFLA_IPTUN_LOCAL
, sizeof(in6buf
), &in6buf
);
2564 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2565 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2569 nla_put(nlm
, IFLA_IPTUN_REMOTE
, sizeof(in6buf
), &in6buf
);
2572 #ifdef IFLA_IPTUN_FMR_MAX
2573 if ((cur
= tb
[TUNNEL_ATTR_FMRS
])) {
2574 struct nlattr
*fmrs
= nla_nest_start(nlm
, IFLA_IPTUN_FMRS
);
2576 struct blob_attr
*fmr
;
2577 unsigned rem
, fmrcnt
= 0;
2578 blobmsg_for_each_attr(fmr
, cur
, rem
) {
2579 if (blobmsg_type(fmr
) != BLOBMSG_TYPE_STRING
)
2582 unsigned ip4len
, ip6len
, ealen
, offset
= 6;
2586 if (sscanf(blobmsg_get_string(fmr
), "%47[^/]/%u,%15[^/]/%u,%u,%u",
2587 ip6buf
, &ip6len
, ip4buf
, &ip4len
, &ealen
, &offset
) < 5) {
2592 struct in6_addr ip6prefix
;
2593 struct in_addr ip4prefix
;
2594 if (inet_pton(AF_INET6
, ip6buf
, &ip6prefix
) != 1 ||
2595 inet_pton(AF_INET
, ip4buf
, &ip4prefix
) != 1) {
2600 struct nlattr
*rule
= nla_nest_start(nlm
, ++fmrcnt
);
2602 nla_put(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX
, sizeof(ip6prefix
), &ip6prefix
);
2603 nla_put(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX
, sizeof(ip4prefix
), &ip4prefix
);
2604 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX_LEN
, ip6len
);
2605 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX_LEN
, ip4len
);
2606 nla_put_u8(nlm
, IFLA_IPTUN_FMR_EA_LEN
, ealen
);
2607 nla_put_u8(nlm
, IFLA_IPTUN_FMR_OFFSET
, offset
);
2609 nla_nest_end(nlm
, rule
);
2612 nla_nest_end(nlm
, fmrs
);
2616 nla_nest_end(nlm
, infodata
);
2617 nla_nest_end(nlm
, linkinfo
);
2619 return system_rtnl_call(nlm
);
2623 } else if (!strcmp(str
, "greip")) {
2624 return system_add_gre_tunnel(name
, "gre", link
, tb
, false);
2625 } else if (!strcmp(str
, "gretapip")) {
2626 return system_add_gre_tunnel(name
, "gretap", link
, tb
, false);
2627 } else if (!strcmp(str
, "greip6")) {
2628 return system_add_gre_tunnel(name
, "ip6gre", link
, tb
, true);
2629 } else if (!strcmp(str
, "gretapip6")) {
2630 return system_add_gre_tunnel(name
, "ip6gretap", link
, tb
, true);
2632 } else if (!strcmp(str
, "vtiip")) {
2633 return system_add_vti_tunnel(name
, "vti", link
, tb
, false);
2634 } else if (!strcmp(str
, "vtiip6")) {
2635 return system_add_vti_tunnel(name
, "vti6", link
, tb
, true);
2638 } else if (!strcmp(str
, "ipip")) {
2639 return system_add_proto_tunnel(name
, IPPROTO_IPIP
, link
, tb
);