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 int system_get_sysctl(const char *path
, char *buf
, const size_t buf_sz
)
337 int fd
= -1, ret
= -1;
339 fd
= open(path
, O_RDONLY
);
343 ssize_t len
= read(fd
, buf
, buf_sz
- 1);
357 system_get_dev_sysctl(const char *path
, const char *device
, char *buf
, const size_t buf_sz
)
359 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
360 return system_get_sysctl(dev_buf
, buf
, buf_sz
);
363 static int system_get_disable_ipv6(struct device
*dev
, char *buf
, const size_t buf_sz
)
365 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
366 dev
->ifname
, buf
, buf_sz
);
369 static int system_get_rpfilter(struct device
*dev
, char *buf
, const size_t buf_sz
)
371 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
372 dev
->ifname
, buf
, buf_sz
);
375 static int system_get_acceptlocal(struct device
*dev
, char *buf
, const size_t buf_sz
)
377 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
378 dev
->ifname
, buf
, buf_sz
);
381 static int system_get_igmpversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
383 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
384 dev
->ifname
, buf
, buf_sz
);
387 static int system_get_mldversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
389 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
390 dev
->ifname
, buf
, buf_sz
);
393 static int system_get_neigh4reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
395 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
396 dev
->ifname
, buf
, buf_sz
);
399 static int system_get_neigh6reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
401 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
402 dev
->ifname
, buf
, buf_sz
);
405 static int system_get_dadtransmits(struct device
*dev
, char *buf
, const size_t buf_sz
)
407 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
408 dev
->ifname
, buf
, buf_sz
);
411 // Evaluate netlink messages
412 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
414 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
415 struct nlattr
*nla
[__IFLA_MAX
];
419 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
422 nlmsg_parse(nh
, sizeof(struct ifinfomsg
), nla
, __IFLA_MAX
- 1, NULL
);
423 if (!nla
[IFLA_IFNAME
])
426 struct device
*dev
= device_get(nla_data(nla
[IFLA_IFNAME
]), false);
430 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev
->ifname
, buf
, sizeof(buf
)))
431 link_state
= strtoul(buf
, NULL
, 0);
433 device_set_link(dev
, link_state
? true : false);
440 handle_hotplug_msg(char *data
, int size
)
442 const char *subsystem
= NULL
, *interface
= NULL
;
443 char *cur
, *end
, *sep
;
448 if (!strncmp(data
, "add@", 4))
450 else if (!strncmp(data
, "remove@", 7))
455 skip
= strlen(data
) + 1;
458 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
459 skip
= strlen(cur
) + 1;
461 sep
= strchr(cur
, '=');
466 if (!strcmp(cur
, "INTERFACE"))
468 else if (!strcmp(cur
, "SUBSYSTEM")) {
470 if (strcmp(subsystem
, "net") != 0)
473 if (subsystem
&& interface
)
479 dev
= device_get(interface
, false);
483 if (dev
->type
!= &simple_device_type
)
486 if (add
&& system_if_force_external(dev
->ifname
))
489 device_set_present(dev
, add
);
493 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
495 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
496 struct sockaddr_nl nla
;
497 unsigned char *buf
= NULL
;
500 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
502 handle_hotplug_msg((char *) buf
, size
);
508 static int system_rtnl_call(struct nl_msg
*msg
)
512 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
518 return nl_wait_for_ack(sock_rtnl
);
521 int system_bridge_delbr(struct device
*bridge
)
523 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
526 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
530 memset(&ifr
, 0, sizeof(ifr
));
532 ifr
.ifr_ifindex
= dev
->ifindex
;
535 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
));
536 return ioctl(sock_ioctl
, cmd
, &ifr
);
539 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
543 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
544 if (stat(buf
, &st
) < 0)
550 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
556 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
557 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
561 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
569 path
= strrchr(buf
, '/');
577 system_bridge_set_wireless(struct device
*bridge
, struct device
*dev
)
579 bool mcast_to_ucast
= dev
->wireless_ap
;
582 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_TO_UNICAST
&&
583 !bridge
->settings
.multicast_to_unicast
)
584 mcast_to_ucast
= false;
586 if (!mcast_to_ucast
|| dev
->wireless_isolate
)
589 system_bridge_set_multicast_to_unicast(dev
, mcast_to_ucast
? "1" : "0");
590 system_bridge_set_hairpin_mode(dev
, hairpin
? "1" : "0");
593 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
599 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
600 if (!oldbr
|| strcmp(oldbr
, bridge
->ifname
) != 0)
601 ret
= system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
604 system_bridge_set_wireless(bridge
, dev
);
606 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
607 snprintf(buf
, sizeof(buf
), "%i", dev
->settings
.multicast_router
);
608 system_bridge_set_multicast_router(dev
, buf
, false);
614 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
616 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
619 int system_if_resolve(struct device
*dev
)
622 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
623 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
624 return ifr
.ifr_ifindex
;
629 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
633 memset(&ifr
, 0, sizeof(ifr
));
634 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
));
635 ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
);
636 ifr
.ifr_flags
|= add
;
637 ifr
.ifr_flags
&= ~rem
;
638 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
650 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
652 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
654 return ifa
->ifa_index
== ifindex
;
657 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
659 struct rtmsg
*r
= NLMSG_DATA(hdr
);
660 struct nlattr
*tb
[__RTA_MAX
];
662 if (r
->rtm_protocol
== RTPROT_KERNEL
&&
663 r
->rtm_family
== AF_INET6
)
666 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
670 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
673 static bool check_rule(struct nlmsghdr
*hdr
, int ifindex
)
678 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
680 struct clear_data
*clr
= arg
;
681 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
682 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
688 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
695 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
702 if (hdr
->nlmsg_type
!= RTM_NEWRULE
)
711 if (!cb(hdr
, clr
->dev
? clr
->dev
->ifindex
: 0))
714 if (type
== RTM_DELRULE
)
715 D(SYSTEM
, "Remove a rule\n");
717 D(SYSTEM
, "Remove %s from device %s\n",
718 type
== RTM_DELADDR
? "an address" : "a route",
720 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
721 hdr
= nlmsg_hdr(clr
->msg
);
722 hdr
->nlmsg_type
= type
;
723 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
725 nl_socket_disable_auto_ack(sock_rtnl
);
726 nl_send_auto_complete(sock_rtnl
, clr
->msg
);
727 nl_socket_enable_auto_ack(sock_rtnl
);
733 cb_finish_event(struct nl_msg
*msg
, void *arg
)
741 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
744 *pending
= err
->error
;
749 system_if_clear_entries(struct device
*dev
, int type
, int af
)
751 struct clear_data clr
;
752 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
755 .rtm_flags
= RTM_F_CLONED
,
757 int flags
= NLM_F_DUMP
;
766 clr
.size
= sizeof(struct rtgenmsg
);
769 clr
.size
= sizeof(struct rtmsg
);
778 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
782 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
783 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
784 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
785 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
787 nl_send_auto_complete(sock_rtnl
, clr
.msg
);
789 nl_recvmsgs(sock_rtnl
, cb
);
797 * Clear bridge (membership) state and bring down device
799 void system_if_clear_state(struct device
*dev
)
801 static char buf
[256];
804 device_set_ifindex(dev
, system_if_resolve(dev
));
805 if (dev
->external
|| !dev
->ifindex
)
808 system_if_flags(dev
->ifname
, 0, IFF_UP
);
810 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
811 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
812 system_bridge_delbr(dev
);
816 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
818 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
819 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
822 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
823 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
824 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
825 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
826 system_set_disable_ipv6(dev
, "0");
829 static inline unsigned long
830 sec_to_jiffies(int val
)
832 return (unsigned long) val
* 100;
835 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
838 unsigned long args
[4] = {};
840 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
843 args
[0] = BRCTL_SET_BRIDGE_STP_STATE
;
844 args
[1] = !!cfg
->stp
;
845 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
847 args
[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY
;
848 args
[1] = sec_to_jiffies(cfg
->forward_delay
);
849 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
851 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
852 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
854 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
855 bridge
->ifname
, cfg
->multicast_querier
? "1" : "0");
857 snprintf(buf
, sizeof(buf
), "%i", cfg
->hash_max
);
858 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
859 bridge
->ifname
, buf
);
861 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
862 snprintf(buf
, sizeof(buf
), "%i", bridge
->settings
.multicast_router
);
863 system_bridge_set_multicast_router(bridge
, buf
, true);
866 args
[0] = BRCTL_SET_BRIDGE_PRIORITY
;
867 args
[1] = cfg
->priority
;
868 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
870 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
871 args
[0] = BRCTL_SET_AGEING_TIME
;
872 args
[1] = sec_to_jiffies(cfg
->ageing_time
);
873 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
876 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
877 args
[0] = BRCTL_SET_BRIDGE_HELLO_TIME
;
878 args
[1] = sec_to_jiffies(cfg
->hello_time
);
879 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
882 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
883 args
[0] = BRCTL_SET_BRIDGE_MAX_AGE
;
884 args
[1] = sec_to_jiffies(cfg
->max_age
);
885 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
891 int system_macvlan_add(struct device
*macvlan
, struct device
*dev
, struct macvlan_config
*cfg
)
894 struct nlattr
*linkinfo
, *data
;
895 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
897 static const struct {
899 enum macvlan_mode val
;
901 { "private", MACVLAN_MODE_PRIVATE
},
902 { "vepa", MACVLAN_MODE_VEPA
},
903 { "bridge", MACVLAN_MODE_BRIDGE
},
904 { "passthru", MACVLAN_MODE_PASSTHRU
},
907 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
912 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
914 if (cfg
->flags
& MACVLAN_OPT_MACADDR
)
915 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
916 nla_put_string(msg
, IFLA_IFNAME
, macvlan
->ifname
);
917 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
919 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
920 goto nla_put_failure
;
922 nla_put_string(msg
, IFLA_INFO_KIND
, "macvlan");
924 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
925 goto nla_put_failure
;
928 for (i
= 0; i
< ARRAY_SIZE(modes
); i
++) {
929 if (strcmp(cfg
->mode
, modes
[i
].name
) != 0)
932 nla_put_u32(msg
, IFLA_MACVLAN_MODE
, modes
[i
].val
);
937 nla_nest_end(msg
, data
);
938 nla_nest_end(msg
, linkinfo
);
940 rv
= system_rtnl_call(msg
);
942 D(SYSTEM
, "Error adding macvlan '%s' over '%s': %d\n", macvlan
->ifname
, dev
->ifname
, rv
);
951 static int system_link_del(const char *ifname
)
954 struct ifinfomsg iim
= {
955 .ifi_family
= AF_UNSPEC
,
959 msg
= nlmsg_alloc_simple(RTM_DELLINK
, NLM_F_REQUEST
);
964 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
965 nla_put_string(msg
, IFLA_IFNAME
, ifname
);
966 return system_rtnl_call(msg
);
969 int system_macvlan_del(struct device
*macvlan
)
971 return system_link_del(macvlan
->ifname
);
974 static int system_vlan(struct device
*dev
, int id
)
976 struct vlan_ioctl_args ifr
= {
977 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
978 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
981 ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
984 ifr
.cmd
= DEL_VLAN_CMD
;
987 ifr
.cmd
= ADD_VLAN_CMD
;
990 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
991 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
994 int system_vlan_add(struct device
*dev
, int id
)
996 return system_vlan(dev
, id
);
999 int system_vlan_del(struct device
*dev
)
1001 return system_vlan(dev
, -1);
1004 int system_vlandev_add(struct device
*vlandev
, struct device
*dev
, struct vlandev_config
*cfg
)
1007 struct nlattr
*linkinfo
, *data
;
1008 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
};
1011 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1016 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1017 nla_put_string(msg
, IFLA_IFNAME
, vlandev
->ifname
);
1018 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1020 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1021 goto nla_put_failure
;
1023 nla_put_string(msg
, IFLA_INFO_KIND
, "vlan");
1025 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1026 goto nla_put_failure
;
1028 nla_put_u16(msg
, IFLA_VLAN_ID
, cfg
->vid
);
1030 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1031 nla_put_u16(msg
, IFLA_VLAN_PROTOCOL
, htons(cfg
->proto
));
1033 if(cfg
->proto
== VLAN_PROTO_8021AD
)
1034 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
);
1037 nla_nest_end(msg
, data
);
1038 nla_nest_end(msg
, linkinfo
);
1040 rv
= system_rtnl_call(msg
);
1042 D(SYSTEM
, "Error adding vlandev '%s' over '%s': %d\n", vlandev
->ifname
, dev
->ifname
, rv
);
1051 int system_vlandev_del(struct device
*vlandev
)
1053 return system_link_del(vlandev
->ifname
);
1057 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
1062 memset(&ifr
, 0, sizeof(ifr
));
1063 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1065 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
1066 s
->mtu
= ifr
.ifr_mtu
;
1067 s
->flags
|= DEV_OPT_MTU
;
1070 s
->mtu6
= system_update_ipv6_mtu(dev
, 0);
1072 s
->flags
|= DEV_OPT_MTU6
;
1074 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
1075 s
->txqueuelen
= ifr
.ifr_qlen
;
1076 s
->flags
|= DEV_OPT_TXQUEUELEN
;
1079 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
1080 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
1081 s
->flags
|= DEV_OPT_MACADDR
;
1084 if (!system_get_disable_ipv6(dev
, buf
, sizeof(buf
))) {
1085 s
->ipv6
= !strtoul(buf
, NULL
, 0);
1086 s
->flags
|= DEV_OPT_IPV6
;
1089 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) == 0) {
1090 s
->promisc
= ifr
.ifr_flags
& IFF_PROMISC
;
1091 s
->flags
|= DEV_OPT_PROMISC
;
1093 s
->multicast
= ifr
.ifr_flags
& IFF_MULTICAST
;
1094 s
->flags
|= DEV_OPT_MULTICAST
;
1097 if (!system_get_rpfilter(dev
, buf
, sizeof(buf
))) {
1098 s
->rpfilter
= strtoul(buf
, NULL
, 0);
1099 s
->flags
|= DEV_OPT_RPFILTER
;
1102 if (!system_get_acceptlocal(dev
, buf
, sizeof(buf
))) {
1103 s
->acceptlocal
= strtoul(buf
, NULL
, 0);
1104 s
->flags
|= DEV_OPT_ACCEPTLOCAL
;
1107 if (!system_get_igmpversion(dev
, buf
, sizeof(buf
))) {
1108 s
->igmpversion
= strtoul(buf
, NULL
, 0);
1109 s
->flags
|= DEV_OPT_IGMPVERSION
;
1112 if (!system_get_mldversion(dev
, buf
, sizeof(buf
))) {
1113 s
->mldversion
= strtoul(buf
, NULL
, 0);
1114 s
->flags
|= DEV_OPT_MLDVERSION
;
1117 if (!system_get_neigh4reachabletime(dev
, buf
, sizeof(buf
))) {
1118 s
->neigh4reachabletime
= strtoul(buf
, NULL
, 0);
1119 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1122 if (!system_get_neigh6reachabletime(dev
, buf
, sizeof(buf
))) {
1123 s
->neigh6reachabletime
= strtoul(buf
, NULL
, 0);
1124 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1127 if (!system_get_dadtransmits(dev
, buf
, sizeof(buf
))) {
1128 s
->dadtransmits
= strtoul(buf
, NULL
, 0);
1129 s
->flags
|= DEV_OPT_DADTRANSMITS
;
1134 system_if_set_rps_xps_val(const char *path
, int val
)
1140 if (glob(path
, 0, NULL
, &gl
))
1143 snprintf(val_buf
, sizeof(val_buf
), "%x", val
);
1144 for (i
= 0; i
< gl
.gl_pathc
; i
++)
1145 system_set_sysctl(gl
.gl_pathv
[i
], val_buf
);
1151 system_if_apply_rps_xps(struct device
*dev
, struct device_settings
*s
)
1153 long n_cpus
= sysconf(_SC_NPROCESSORS_ONLN
);
1159 val
= (1 << n_cpus
) - 1;
1160 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/rps_cpus", dev
->ifname
);
1161 system_if_set_rps_xps_val(dev_buf
, s
->rps
? val
: 0);
1163 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/xps_cpus", dev
->ifname
);
1164 system_if_set_rps_xps_val(dev_buf
, s
->xps
? val
: 0);
1168 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
, unsigned int apply_mask
)
1173 memset(&ifr
, 0, sizeof(ifr
));
1174 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1175 if (s
->flags
& DEV_OPT_MTU
& apply_mask
) {
1176 ifr
.ifr_mtu
= s
->mtu
;
1177 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
1178 s
->flags
&= ~DEV_OPT_MTU
;
1180 if (s
->flags
& DEV_OPT_MTU6
& apply_mask
) {
1181 system_update_ipv6_mtu(dev
, s
->mtu6
);
1183 if (s
->flags
& DEV_OPT_TXQUEUELEN
& apply_mask
) {
1184 ifr
.ifr_qlen
= s
->txqueuelen
;
1185 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
1186 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
1188 if ((s
->flags
& DEV_OPT_MACADDR
& apply_mask
) && !dev
->external
) {
1189 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
1190 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
1191 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
1192 s
->flags
&= ~DEV_OPT_MACADDR
;
1194 if (s
->flags
& DEV_OPT_IPV6
& apply_mask
)
1195 system_set_disable_ipv6(dev
, s
->ipv6
? "0" : "1");
1196 if (s
->flags
& DEV_OPT_PROMISC
& apply_mask
) {
1197 if (system_if_flags(dev
->ifname
, s
->promisc
? IFF_PROMISC
: 0,
1198 !s
->promisc
? IFF_PROMISC
: 0) < 0)
1199 s
->flags
&= ~DEV_OPT_PROMISC
;
1201 if (s
->flags
& DEV_OPT_RPFILTER
& apply_mask
) {
1202 snprintf(buf
, sizeof(buf
), "%d", s
->rpfilter
);
1203 system_set_rpfilter(dev
, buf
);
1205 if (s
->flags
& DEV_OPT_ACCEPTLOCAL
& apply_mask
)
1206 system_set_acceptlocal(dev
, s
->acceptlocal
? "1" : "0");
1207 if (s
->flags
& DEV_OPT_IGMPVERSION
& apply_mask
) {
1208 snprintf(buf
, sizeof(buf
), "%d", s
->igmpversion
);
1209 system_set_igmpversion(dev
, buf
);
1211 if (s
->flags
& DEV_OPT_MLDVERSION
& apply_mask
) {
1212 snprintf(buf
, sizeof(buf
), "%d", s
->mldversion
);
1213 system_set_mldversion(dev
, buf
);
1215 if (s
->flags
& DEV_OPT_NEIGHREACHABLETIME
& apply_mask
) {
1216 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4reachabletime
);
1217 system_set_neigh4reachabletime(dev
, buf
);
1218 snprintf(buf
, sizeof(buf
), "%d", s
->neigh6reachabletime
);
1219 system_set_neigh6reachabletime(dev
, buf
);
1221 if (s
->flags
& DEV_OPT_DADTRANSMITS
& apply_mask
) {
1222 snprintf(buf
, sizeof(buf
), "%d", s
->dadtransmits
);
1223 system_set_dadtransmits(dev
, buf
);
1225 if (s
->flags
& DEV_OPT_MULTICAST
& apply_mask
) {
1226 if (system_if_flags(dev
->ifname
, s
->multicast
? IFF_MULTICAST
: 0,
1227 !s
->multicast
? IFF_MULTICAST
: 0) < 0)
1228 s
->flags
&= ~DEV_OPT_MULTICAST
;
1231 system_if_apply_rps_xps(dev
, s
);
1234 int system_if_up(struct device
*dev
)
1236 system_if_get_settings(dev
, &dev
->orig_settings
);
1237 /* Only keep orig settings based on what needs to be set */
1238 dev
->orig_settings
.valid_flags
= dev
->orig_settings
.flags
;
1239 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
1240 system_if_apply_settings(dev
, &dev
->settings
, dev
->settings
.flags
);
1241 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
1244 int system_if_down(struct device
*dev
)
1246 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
1247 system_if_apply_settings(dev
, &dev
->orig_settings
, dev
->orig_settings
.flags
);
1251 struct if_check_data
{
1257 #ifndef IFF_LOWER_UP
1258 #define IFF_LOWER_UP 0x10000
1261 static int cb_if_check_valid(struct nl_msg
*msg
, void *arg
)
1263 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
1264 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
1265 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1267 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
1270 device_set_present(chk
->dev
, ifi
->ifi_index
> 0 ? true : false);
1271 device_set_link(chk
->dev
, ifi
->ifi_flags
& IFF_LOWER_UP
? true : false);
1276 static int cb_if_check_ack(struct nl_msg
*msg
, void *arg
)
1278 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1283 static int cb_if_check_error(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
1285 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1287 device_set_present(chk
->dev
, false);
1288 device_set_link(chk
->dev
, false);
1289 chk
->pending
= err
->error
;
1294 int system_if_check(struct device
*dev
)
1296 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1298 struct ifinfomsg ifi
= {
1299 .ifi_family
= AF_UNSPEC
,
1302 struct if_check_data chk
= {
1308 msg
= nlmsg_alloc_simple(RTM_GETLINK
, 0);
1312 if (nlmsg_append(msg
, &ifi
, sizeof(ifi
), 0) ||
1313 nla_put_string(msg
, IFLA_IFNAME
, dev
->ifname
))
1316 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_if_check_valid
, &chk
);
1317 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, cb_if_check_ack
, &chk
);
1318 nl_cb_err(cb
, NL_CB_CUSTOM
, cb_if_check_error
, &chk
);
1320 nl_send_auto_complete(sock_rtnl
, msg
);
1321 while (chk
.pending
> 0)
1322 nl_recvmsgs(sock_rtnl
, cb
);
1334 system_if_get_parent(struct device
*dev
)
1336 char buf
[64], *devname
;
1337 int ifindex
, iflink
, len
;
1340 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
1341 f
= fopen(buf
, "r");
1345 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
1352 iflink
= strtoul(buf
, NULL
, 0);
1353 ifindex
= system_if_resolve(dev
);
1354 if (!iflink
|| iflink
== ifindex
)
1357 devname
= if_indextoname(iflink
, buf
);
1361 return device_get(devname
, true);
1365 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
1371 fd
= openat(dir_fd
, file
, O_RDONLY
);
1376 len
= read(fd
, buf
, len
- 1);
1380 } else if (len
> 0) {
1383 c
= strchr(buf
, '\n');
1396 read_uint64_file(int dir_fd
, const char *file
, uint64_t *val
)
1401 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
1403 *val
= strtoull(buf
, NULL
, 0);
1408 /* Assume advertised flags == supported flags */
1409 static const struct {
1412 } ethtool_link_modes
[] = {
1413 { ADVERTISED_10baseT_Half
, "10H" },
1414 { ADVERTISED_10baseT_Full
, "10F" },
1415 { ADVERTISED_100baseT_Half
, "100H" },
1416 { ADVERTISED_100baseT_Full
, "100F" },
1417 { ADVERTISED_1000baseT_Half
, "1000H" },
1418 { ADVERTISED_1000baseT_Full
, "1000F" },
1421 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
1424 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
1425 if (mask
& ethtool_link_modes
[i
].mask
)
1426 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
1431 system_if_force_external(const char *ifname
)
1436 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/phy80211", ifname
);
1437 return stat(buf
, &s
) == 0;
1441 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
1443 struct ethtool_cmd ecmd
;
1449 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s", dev
->ifname
);
1450 dir_fd
= open(buf
, O_DIRECTORY
);
1452 memset(&ecmd
, 0, sizeof(ecmd
));
1453 memset(&ifr
, 0, sizeof(ifr
));
1454 strcpy(ifr
.ifr_name
, dev
->ifname
);
1455 ifr
.ifr_data
= (caddr_t
) &ecmd
;
1456 ecmd
.cmd
= ETHTOOL_GSET
;
1458 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
1459 c
= blobmsg_open_array(b
, "link-advertising");
1460 system_add_link_modes(b
, ecmd
.advertising
);
1461 blobmsg_close_array(b
, c
);
1463 c
= blobmsg_open_array(b
, "link-supported");
1464 system_add_link_modes(b
, ecmd
.supported
);
1465 blobmsg_close_array(b
, c
);
1467 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
1468 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
1469 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
1470 blobmsg_add_string_buffer(b
);
1478 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
1480 const char *const counters
[] = {
1481 "collisions", "rx_frame_errors", "tx_compressed",
1482 "multicast", "rx_length_errors", "tx_dropped",
1483 "rx_bytes", "rx_missed_errors", "tx_errors",
1484 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1485 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1486 "rx_dropped", "tx_aborted_errors", "tx_packets",
1487 "rx_errors", "tx_bytes", "tx_window_errors",
1488 "rx_fifo_errors", "tx_carrier_errors",
1495 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
1496 stats_dir
= open(buf
, O_DIRECTORY
);
1500 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
1501 if (read_uint64_file(stats_dir
, counters
[i
], &val
))
1502 blobmsg_add_u64(b
, counters
[i
], val
);
1508 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
1510 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
1511 int alen
= v4
? 4 : 16;
1512 unsigned int flags
= 0;
1513 struct ifaddrmsg ifa
= {
1514 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1515 .ifa_prefixlen
= addr
->mask
,
1516 .ifa_index
= dev
->ifindex
,
1520 if (cmd
== RTM_NEWADDR
)
1521 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1523 msg
= nlmsg_alloc_simple(cmd
, flags
);
1527 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
1528 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
1530 if (addr
->broadcast
)
1531 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
1532 if (addr
->point_to_point
)
1533 nla_put_u32(msg
, IFA_ADDRESS
, addr
->point_to_point
);
1535 time_t now
= system_get_rtime();
1536 struct ifa_cacheinfo cinfo
= {0xffffffffU
, 0xffffffffU
, 0, 0};
1538 if (addr
->preferred_until
) {
1539 int64_t preferred
= addr
->preferred_until
- now
;
1542 else if (preferred
> UINT32_MAX
)
1543 preferred
= UINT32_MAX
;
1545 cinfo
.ifa_prefered
= preferred
;
1548 if (addr
->valid_until
) {
1549 int64_t valid
= addr
->valid_until
- now
;
1554 else if (valid
> UINT32_MAX
)
1557 cinfo
.ifa_valid
= valid
;
1560 nla_put(msg
, IFA_CACHEINFO
, sizeof(cinfo
), &cinfo
);
1562 if (cmd
== RTM_NEWADDR
&& (addr
->flags
& DEVADDR_OFFLINK
))
1563 nla_put_u32(msg
, IFA_FLAGS
, IFA_F_NOPREFIXROUTE
);
1566 return system_rtnl_call(msg
);
1569 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
1571 return system_addr(dev
, addr
, RTM_NEWADDR
);
1574 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
1576 return system_addr(dev
, addr
, RTM_DELADDR
);
1579 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
1581 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
1583 unsigned int flags
= 0;
1586 have_gw
= !!route
->nexthop
.in
.s_addr
;
1588 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
1589 route
->nexthop
.in6
.s6_addr32
[1] ||
1590 route
->nexthop
.in6
.s6_addr32
[2] ||
1591 route
->nexthop
.in6
.s6_addr32
[3];
1593 unsigned int table
= (route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))
1594 ? route
->table
: RT_TABLE_MAIN
;
1596 struct rtmsg rtm
= {
1597 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1598 .rtm_dst_len
= route
->mask
,
1599 .rtm_src_len
= route
->sourcemask
,
1600 .rtm_table
= (table
< 256) ? table
: RT_TABLE_UNSPEC
,
1601 .rtm_protocol
= (route
->flags
& DEVADDR_KERNEL
) ? RTPROT_KERNEL
: RTPROT_STATIC
,
1602 .rtm_scope
= RT_SCOPE_NOWHERE
,
1603 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
1604 .rtm_flags
= (route
->flags
& DEVROUTE_ONLINK
) ? RTNH_F_ONLINK
: 0,
1608 if (cmd
== RTM_NEWROUTE
) {
1609 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1611 if (!dev
) { // Add null-route
1612 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1613 rtm
.rtm_type
= RTN_UNREACHABLE
;
1616 rtm
.rtm_scope
= (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
1619 if (route
->flags
& DEVROUTE_TYPE
) {
1620 rtm
.rtm_type
= route
->type
;
1621 if (!(route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))) {
1622 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_BROADCAST
||
1623 rtm
.rtm_type
== RTN_NAT
|| rtm
.rtm_type
== RTN_ANYCAST
)
1624 rtm
.rtm_table
= RT_TABLE_LOCAL
;
1627 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_NAT
) {
1628 rtm
.rtm_scope
= RT_SCOPE_HOST
;
1629 } else if (rtm
.rtm_type
== RTN_BROADCAST
|| rtm
.rtm_type
== RTN_MULTICAST
||
1630 rtm
.rtm_type
== RTN_ANYCAST
) {
1631 rtm
.rtm_scope
= RT_SCOPE_LINK
;
1632 } else if (rtm
.rtm_type
== RTN_BLACKHOLE
|| rtm
.rtm_type
== RTN_UNREACHABLE
||
1633 rtm
.rtm_type
== RTN_PROHIBIT
|| rtm
.rtm_type
== RTN_FAILED_POLICY
) {
1634 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1639 msg
= nlmsg_alloc_simple(cmd
, flags
);
1643 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
1646 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
1648 if (route
->sourcemask
) {
1649 if (rtm
.rtm_family
== AF_INET
)
1650 nla_put(msg
, RTA_PREFSRC
, alen
, &route
->source
);
1652 nla_put(msg
, RTA_SRC
, alen
, &route
->source
);
1655 if (route
->metric
> 0)
1656 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
1659 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
1662 nla_put_u32(msg
, RTA_OIF
, dev
->ifindex
);
1665 nla_put_u32(msg
, RTA_TABLE
, table
);
1667 if (route
->flags
& DEVROUTE_MTU
) {
1668 struct nlattr
*metrics
;
1670 if (!(metrics
= nla_nest_start(msg
, RTA_METRICS
)))
1671 goto nla_put_failure
;
1673 nla_put_u32(msg
, RTAX_MTU
, route
->mtu
);
1675 nla_nest_end(msg
, metrics
);
1678 return system_rtnl_call(msg
);
1685 int system_add_route(struct device
*dev
, struct device_route
*route
)
1687 return system_rt(dev
, route
, RTM_NEWROUTE
);
1690 int system_del_route(struct device
*dev
, struct device_route
*route
)
1692 return system_rt(dev
, route
, RTM_DELROUTE
);
1695 int system_flush_routes(void)
1697 const char *names
[] = {
1698 "/proc/sys/net/ipv4/route/flush",
1699 "/proc/sys/net/ipv6/route/flush"
1703 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
1704 fd
= open(names
[i
], O_WRONLY
);
1708 if (write(fd
, "-1", 2)) {}
1714 bool system_resolve_rt_type(const char *type
, unsigned int *id
)
1716 return system_rtn_aton(type
, id
);
1719 bool system_resolve_rt_table(const char *name
, unsigned int *id
)
1723 unsigned int n
, table
= RT_TABLE_UNSPEC
;
1725 /* first try to parse table as number */
1726 if ((n
= strtoul(name
, &e
, 0)) > 0 && !*e
)
1729 /* handle well known aliases */
1730 else if (!strcmp(name
, "default"))
1731 table
= RT_TABLE_DEFAULT
;
1732 else if (!strcmp(name
, "main"))
1733 table
= RT_TABLE_MAIN
;
1734 else if (!strcmp(name
, "local"))
1735 table
= RT_TABLE_LOCAL
;
1736 else if (!strcmp(name
, "prelocal"))
1737 table
= RT_TABLE_PRELOCAL
;
1739 /* try to look up name in /etc/iproute2/rt_tables */
1740 else if ((f
= fopen("/etc/iproute2/rt_tables", "r")) != NULL
)
1742 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
)
1744 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
1747 n
= strtoul(e
, NULL
, 10);
1748 e
= strtok(NULL
, " \t\n");
1750 if (e
&& !strcmp(e
, name
))
1760 if (table
== RT_TABLE_UNSPEC
)
1767 bool system_is_default_rt_table(unsigned int id
)
1769 return (id
== RT_TABLE_MAIN
);
1772 bool system_resolve_rpfilter(const char *filter
, unsigned int *id
)
1777 if (!strcmp(filter
, "strict"))
1779 else if (!strcmp(filter
, "loose"))
1782 n
= strtoul(filter
, &e
, 0);
1783 if (*e
|| e
== filter
|| n
> 2)
1791 static int system_iprule(struct iprule
*rule
, int cmd
)
1793 int alen
= ((rule
->flags
& IPRULE_FAMILY
) == IPRULE_INET4
) ? 4 : 16;
1796 struct rtmsg rtm
= {
1797 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1798 .rtm_protocol
= RTPROT_STATIC
,
1799 .rtm_scope
= RT_SCOPE_UNIVERSE
,
1800 .rtm_table
= RT_TABLE_UNSPEC
,
1801 .rtm_type
= RTN_UNSPEC
,
1805 if (cmd
== RTM_NEWRULE
)
1806 rtm
.rtm_type
= RTN_UNICAST
;
1809 rtm
.rtm_flags
|= FIB_RULE_INVERT
;
1811 if (rule
->flags
& IPRULE_SRC
)
1812 rtm
.rtm_src_len
= rule
->src_mask
;
1814 if (rule
->flags
& IPRULE_DEST
)
1815 rtm
.rtm_dst_len
= rule
->dest_mask
;
1817 if (rule
->flags
& IPRULE_TOS
)
1818 rtm
.rtm_tos
= rule
->tos
;
1820 if (rule
->flags
& IPRULE_LOOKUP
) {
1821 if (rule
->lookup
< 256)
1822 rtm
.rtm_table
= rule
->lookup
;
1825 if (rule
->flags
& IPRULE_ACTION
)
1826 rtm
.rtm_type
= rule
->action
;
1827 else if (rule
->flags
& IPRULE_GOTO
)
1828 rtm
.rtm_type
= FR_ACT_GOTO
;
1829 else if (!(rule
->flags
& (IPRULE_LOOKUP
| IPRULE_ACTION
| IPRULE_GOTO
)))
1830 rtm
.rtm_type
= FR_ACT_NOP
;
1832 msg
= nlmsg_alloc_simple(cmd
, NLM_F_REQUEST
);
1837 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
1839 if (rule
->flags
& IPRULE_IN
)
1840 nla_put(msg
, FRA_IFNAME
, strlen(rule
->in_dev
) + 1, rule
->in_dev
);
1842 if (rule
->flags
& IPRULE_OUT
)
1843 nla_put(msg
, FRA_OIFNAME
, strlen(rule
->out_dev
) + 1, rule
->out_dev
);
1845 if (rule
->flags
& IPRULE_SRC
)
1846 nla_put(msg
, FRA_SRC
, alen
, &rule
->src_addr
);
1848 if (rule
->flags
& IPRULE_DEST
)
1849 nla_put(msg
, FRA_DST
, alen
, &rule
->dest_addr
);
1851 if (rule
->flags
& IPRULE_PRIORITY
)
1852 nla_put_u32(msg
, FRA_PRIORITY
, rule
->priority
);
1853 else if (cmd
== RTM_NEWRULE
)
1854 nla_put_u32(msg
, FRA_PRIORITY
, rule
->order
);
1856 if (rule
->flags
& IPRULE_FWMARK
)
1857 nla_put_u32(msg
, FRA_FWMARK
, rule
->fwmark
);
1859 if (rule
->flags
& IPRULE_FWMASK
)
1860 nla_put_u32(msg
, FRA_FWMASK
, rule
->fwmask
);
1862 if (rule
->flags
& IPRULE_LOOKUP
) {
1863 if (rule
->lookup
>= 256)
1864 nla_put_u32(msg
, FRA_TABLE
, rule
->lookup
);
1867 if (rule
->flags
& IPRULE_GOTO
)
1868 nla_put_u32(msg
, FRA_GOTO
, rule
->gotoid
);
1870 return system_rtnl_call(msg
);
1873 int system_add_iprule(struct iprule
*rule
)
1875 return system_iprule(rule
, RTM_NEWRULE
);
1878 int system_del_iprule(struct iprule
*rule
)
1880 return system_iprule(rule
, RTM_DELRULE
);
1883 int system_flush_iprules(void)
1888 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET
);
1889 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET6
);
1891 memset(&rule
, 0, sizeof(rule
));
1894 rule
.flags
= IPRULE_INET4
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
1897 rule
.lookup
= RT_TABLE_PRELOCAL
;
1898 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1901 rule
.lookup
= RT_TABLE_LOCAL
;
1902 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1904 rule
.priority
= 32766;
1905 rule
.lookup
= RT_TABLE_MAIN
;
1906 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1908 rule
.priority
= 32767;
1909 rule
.lookup
= RT_TABLE_DEFAULT
;
1910 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1913 rule
.flags
= IPRULE_INET6
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
1916 rule
.lookup
= RT_TABLE_PRELOCAL
;
1917 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1920 rule
.lookup
= RT_TABLE_LOCAL
;
1921 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1923 rule
.priority
= 32766;
1924 rule
.lookup
= RT_TABLE_MAIN
;
1925 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1930 bool system_resolve_iprule_action(const char *action
, unsigned int *id
)
1932 return system_rtn_aton(action
, id
);
1935 time_t system_get_rtime(void)
1940 if (syscall(__NR_clock_gettime
, CLOCK_MONOTONIC
, &ts
) == 0)
1943 if (gettimeofday(&tv
, NULL
) == 0)
1950 #define IP_DF 0x4000
1953 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
1957 memset(&ifr
, 0, sizeof(ifr
));
1958 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
));
1959 ifr
.ifr_ifru
.ifru_data
= p
;
1960 return ioctl(sock_ioctl
, cmd
, &ifr
);
1963 #ifdef IFLA_IPTUN_MAX
1964 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
1965 static int system_add_gre_tunnel(const char *name
, const char *kind
,
1966 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
1969 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
1970 struct blob_attr
*cur
;
1971 uint32_t ikey
= 0, okey
= 0, flags
= 0, flowinfo
= 0;
1972 uint16_t iflags
= 0, oflags
= 0;
1974 int ret
= 0, ttl
= 64;
1976 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
1980 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
1981 nla_put_string(nlm
, IFLA_IFNAME
, name
);
1983 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
1989 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
1990 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
1997 nla_put_u32(nlm
, IFLA_GRE_LINK
, link
);
1999 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2000 ttl
= blobmsg_get_u32(cur
);
2002 nla_put_u8(nlm
, IFLA_GRE_TTL
, ttl
);
2004 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2005 char *str
= blobmsg_get_string(cur
);
2006 if (strcmp(str
, "inherit")) {
2009 if (!system_tos_aton(str
, &uval
)) {
2015 flowinfo
|= htonl(uval
<< 20) & IP6_FLOWINFO_TCLASS
;
2020 flags
|= IP6_TNL_F_USE_ORIG_TCLASS
;
2026 if ((cur
= tb
[TUNNEL_ATTR_INFO
]) && (blobmsg_type(cur
) == BLOBMSG_TYPE_STRING
)) {
2027 uint8_t icsum
, ocsum
, iseqno
, oseqno
;
2028 if (sscanf(blobmsg_get_string(cur
), "%u,%u,%hhu,%hhu,%hhu,%hhu",
2029 &ikey
, &okey
, &icsum
, &ocsum
, &iseqno
, &oseqno
) < 6) {
2054 struct in6_addr in6buf
;
2055 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2056 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2060 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(in6buf
), &in6buf
);
2063 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2064 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2068 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(in6buf
), &in6buf
);
2070 nla_put_u8(nlm
, IFLA_GRE_ENCAP_LIMIT
, 4);
2073 nla_put_u32(nlm
, IFLA_GRE_FLOWINFO
, flowinfo
);
2076 nla_put_u32(nlm
, IFLA_GRE_FLAGS
, flags
);
2078 struct in_addr inbuf
;
2081 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2082 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2086 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(inbuf
), &inbuf
);
2089 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2090 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2094 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(inbuf
), &inbuf
);
2096 if (IN_MULTICAST(ntohl(inbuf
.s_addr
))) {
2098 okey
= inbuf
.s_addr
;
2103 ikey
= inbuf
.s_addr
;
2109 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2110 set_df
= blobmsg_get_bool(cur
);
2112 /* ttl !=0 and nopmtudisc are incompatible */
2113 if (ttl
&& !set_df
) {
2118 nla_put_u8(nlm
, IFLA_GRE_PMTUDISC
, set_df
? 1 : 0);
2120 nla_put_u8(nlm
, IFLA_GRE_TOS
, tos
);
2124 nla_put_u16(nlm
, IFLA_GRE_OFLAGS
, oflags
);
2127 nla_put_u16(nlm
, IFLA_GRE_IFLAGS
, iflags
);
2130 nla_put_u32(nlm
, IFLA_GRE_OKEY
, okey
);
2133 nla_put_u32(nlm
, IFLA_GRE_IKEY
, ikey
);
2135 nla_nest_end(nlm
, infodata
);
2136 nla_nest_end(nlm
, linkinfo
);
2138 return system_rtnl_call(nlm
);
2147 static int system_add_vti_tunnel(const char *name
, const char *kind
,
2148 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2151 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2152 struct blob_attr
*cur
;
2153 uint32_t ikey
= 0, okey
= 0;
2156 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2160 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2161 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2163 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2169 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2170 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2177 nla_put_u32(nlm
, IFLA_VTI_LINK
, link
);
2179 if ((cur
= tb
[TUNNEL_ATTR_INFO
]) && (blobmsg_type(cur
) == BLOBMSG_TYPE_STRING
)) {
2180 if (sscanf(blobmsg_get_string(cur
), "%u,%u",
2181 &ikey
, &okey
) < 2) {
2188 struct in6_addr in6buf
;
2189 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2190 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2194 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(in6buf
), &in6buf
);
2197 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2198 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2202 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(in6buf
), &in6buf
);
2206 struct in_addr inbuf
;
2208 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2209 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2213 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(inbuf
), &inbuf
);
2216 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2217 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2221 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(inbuf
), &inbuf
);
2227 nla_put_be32(nlm
, IFLA_VTI_OKEY
, okey
);
2230 nla_put_be32(nlm
, IFLA_VTI_IKEY
, ikey
);
2232 nla_nest_end(nlm
, infodata
);
2233 nla_nest_end(nlm
, linkinfo
);
2235 return system_rtnl_call(nlm
);
2243 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
, const unsigned int link
, struct blob_attr
**tb
)
2245 struct blob_attr
*cur
;
2247 struct ip_tunnel_parm p
= {
2256 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
]) &&
2257 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.saddr
) < 1)
2260 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
]) &&
2261 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.daddr
) < 1)
2264 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2265 set_df
= blobmsg_get_bool(cur
);
2267 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2268 p
.iph
.ttl
= blobmsg_get_u32(cur
);
2270 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2271 char *str
= blobmsg_get_string(cur
);
2272 if (strcmp(str
, "inherit")) {
2275 if (!system_tos_aton(str
, &uval
))
2283 p
.iph
.frag_off
= set_df
? htons(IP_DF
) : 0;
2284 /* ttl !=0 and nopmtudisc are incompatible */
2285 if (p
.iph
.ttl
&& p
.iph
.frag_off
== 0)
2288 strncpy(p
.name
, name
, sizeof(p
.name
));
2290 switch (p
.iph
.protocol
) {
2292 return tunnel_ioctl("tunl0", SIOCADDTUNNEL
, &p
);
2294 return tunnel_ioctl("sit0", SIOCADDTUNNEL
, &p
);
2301 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
)
2303 struct blob_attr
*cur
;
2306 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2308 str
= blobmsg_data(cur
);
2310 if (!strcmp(str
, "greip") || !strcmp(str
, "gretapip") ||
2311 !strcmp(str
, "greip6") || !strcmp(str
, "gretapip6") ||
2312 !strcmp(str
, "vtiip") || !strcmp(str
, "vtiip6"))
2313 return system_link_del(name
);
2315 return tunnel_ioctl(name
, SIOCDELTUNNEL
, NULL
);
2318 int system_del_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2320 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2322 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2323 blob_data(attr
), blob_len(attr
));
2325 return __system_del_ip_tunnel(name
, tb
);
2328 int system_update_ipv6_mtu(struct device
*dev
, int mtu
)
2332 snprintf(buf
, sizeof(buf
), "/proc/sys/net/ipv6/conf/%s/mtu",
2335 int fd
= open(buf
, O_RDWR
);
2338 ssize_t len
= read(fd
, buf
, sizeof(buf
) - 1);
2345 if (write(fd
, buf
, snprintf(buf
, sizeof(buf
), "%i", mtu
)) > 0)
2354 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2356 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2357 struct blob_attr
*cur
;
2360 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2361 blob_data(attr
), blob_len(attr
));
2363 __system_del_ip_tunnel(name
, tb
);
2365 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2367 str
= blobmsg_data(cur
);
2369 unsigned int ttl
= 0;
2370 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
2371 ttl
= blobmsg_get_u32(cur
);
2376 unsigned int link
= 0;
2377 if ((cur
= tb
[TUNNEL_ATTR_LINK
])) {
2378 struct interface
*iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
2382 if (iface
->l3_dev
.dev
)
2383 link
= iface
->l3_dev
.dev
->ifindex
;
2386 if (!strcmp(str
, "sit")) {
2387 if (system_add_proto_tunnel(name
, IPPROTO_IPV6
, link
, tb
) < 0)
2391 if ((cur
= tb
[TUNNEL_ATTR_6RD_PREFIX
])) {
2393 struct ip_tunnel_6rd p6
;
2395 memset(&p6
, 0, sizeof(p6
));
2397 if (!parse_ip_and_netmask(AF_INET6
, blobmsg_data(cur
),
2398 &p6
.prefix
, &mask
) || mask
> 128)
2400 p6
.prefixlen
= mask
;
2402 if ((cur
= tb
[TUNNEL_ATTR_6RD_RELAY_PREFIX
])) {
2403 if (!parse_ip_and_netmask(AF_INET
, blobmsg_data(cur
),
2404 &p6
.relay_prefix
, &mask
) || mask
> 32)
2406 p6
.relay_prefixlen
= mask
;
2409 if (tunnel_ioctl(name
, SIOCADD6RD
, &p6
) < 0) {
2410 __system_del_ip_tunnel(name
, tb
);
2415 #ifdef IFLA_IPTUN_MAX
2416 } else if (!strcmp(str
, "ipip6")) {
2417 struct nl_msg
*nlm
= nlmsg_alloc_simple(RTM_NEWLINK
,
2418 NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2419 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
};
2425 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2426 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2429 nla_put_u32(nlm
, IFLA_LINK
, link
);
2431 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2436 nla_put_string(nlm
, IFLA_INFO_KIND
, "ip6tnl");
2437 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2444 nla_put_u32(nlm
, IFLA_IPTUN_LINK
, link
);
2446 nla_put_u8(nlm
, IFLA_IPTUN_PROTO
, IPPROTO_IPIP
);
2447 nla_put_u8(nlm
, IFLA_IPTUN_TTL
, (ttl
) ? ttl
: 64);
2448 nla_put_u8(nlm
, IFLA_IPTUN_ENCAP_LIMIT
, 4);
2450 struct in6_addr in6buf
;
2451 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2452 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2456 nla_put(nlm
, IFLA_IPTUN_LOCAL
, sizeof(in6buf
), &in6buf
);
2459 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2460 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2464 nla_put(nlm
, IFLA_IPTUN_REMOTE
, sizeof(in6buf
), &in6buf
);
2467 #ifdef IFLA_IPTUN_FMR_MAX
2468 if ((cur
= tb
[TUNNEL_ATTR_FMRS
])) {
2469 struct nlattr
*fmrs
= nla_nest_start(nlm
, IFLA_IPTUN_FMRS
);
2471 struct blob_attr
*fmr
;
2472 unsigned rem
, fmrcnt
= 0;
2473 blobmsg_for_each_attr(fmr
, cur
, rem
) {
2474 if (blobmsg_type(fmr
) != BLOBMSG_TYPE_STRING
)
2477 unsigned ip4len
, ip6len
, ealen
, offset
= 6;
2481 if (sscanf(blobmsg_get_string(fmr
), "%47[^/]/%u,%15[^/]/%u,%u,%u",
2482 ip6buf
, &ip6len
, ip4buf
, &ip4len
, &ealen
, &offset
) < 5) {
2487 struct in6_addr ip6prefix
;
2488 struct in_addr ip4prefix
;
2489 if (inet_pton(AF_INET6
, ip6buf
, &ip6prefix
) != 1 ||
2490 inet_pton(AF_INET
, ip4buf
, &ip4prefix
) != 1) {
2495 struct nlattr
*rule
= nla_nest_start(nlm
, ++fmrcnt
);
2497 nla_put(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX
, sizeof(ip6prefix
), &ip6prefix
);
2498 nla_put(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX
, sizeof(ip4prefix
), &ip4prefix
);
2499 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX_LEN
, ip6len
);
2500 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX_LEN
, ip4len
);
2501 nla_put_u8(nlm
, IFLA_IPTUN_FMR_EA_LEN
, ealen
);
2502 nla_put_u8(nlm
, IFLA_IPTUN_FMR_OFFSET
, offset
);
2504 nla_nest_end(nlm
, rule
);
2507 nla_nest_end(nlm
, fmrs
);
2511 nla_nest_end(nlm
, infodata
);
2512 nla_nest_end(nlm
, linkinfo
);
2514 return system_rtnl_call(nlm
);
2518 } else if (!strcmp(str
, "greip")) {
2519 return system_add_gre_tunnel(name
, "gre", link
, tb
, false);
2520 } else if (!strcmp(str
, "gretapip")) {
2521 return system_add_gre_tunnel(name
, "gretap", link
, tb
, false);
2522 } else if (!strcmp(str
, "greip6")) {
2523 return system_add_gre_tunnel(name
, "ip6gre", link
, tb
, true);
2524 } else if (!strcmp(str
, "gretapip6")) {
2525 return system_add_gre_tunnel(name
, "ip6gretap", link
, tb
, true);
2527 } else if (!strcmp(str
, "vtiip")) {
2528 return system_add_vti_tunnel(name
, "vti", link
, tb
, false);
2529 } else if (!strcmp(str
, "vtiip6")) {
2530 return system_add_vti_tunnel(name
, "vti6", link
, tb
, true);
2533 } else if (!strcmp(str
, "ipip")) {
2534 return system_add_proto_tunnel(name
, IPPROTO_IPIP
, link
, tb
);