2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
5 * Copyright (C) 2013 Steven Barth <steven@midlink.org>
6 * Copyright (C) 2014 Gioacchino Mazzurco <gio@eigenlab.org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2
10 * as published by the Free Software Foundation
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
19 #include <sys/socket.h>
20 #include <sys/ioctl.h>
22 #include <sys/syscall.h>
25 #include <net/if_arp.h>
27 #include <arpa/inet.h>
28 #include <netinet/in.h>
30 #include <linux/rtnetlink.h>
31 #include <linux/sockios.h>
33 #include <linux/if_addr.h>
34 #include <linux/if_link.h>
35 #include <linux/if_vlan.h>
36 #include <linux/if_bridge.h>
37 #include <linux/if_tunnel.h>
38 #include <linux/ip6_tunnel.h>
39 #include <linux/ethtool.h>
40 #include <linux/fib_rules.h>
41 #include <linux/version.h>
43 #ifndef RTN_FAILED_POLICY
44 #define RTN_FAILED_POLICY 12
47 #ifndef IFA_F_NOPREFIXROUTE
48 #define IFA_F_NOPREFIXROUTE 0x200
52 #define IFA_FLAGS (IFA_MULTICAST + 1)
62 #include <netlink/msg.h>
63 #include <netlink/attr.h>
64 #include <netlink/socket.h>
65 #include <libubox/uloop.h>
72 struct uloop_fd uloop
;
77 static int sock_ioctl
= -1;
78 static struct nl_sock
*sock_rtnl
= NULL
;
80 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
);
81 static void handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
);
83 static char dev_buf
[256];
86 handler_nl_event(struct uloop_fd
*u
, unsigned int events
)
88 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
90 socklen_t errlen
= sizeof(err
);
93 nl_recvmsgs_default(ev
->sock
);
97 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
102 // Increase rx buffer size on netlink socket
104 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
107 // Request full dump since some info got dropped
108 struct rtgenmsg msg
= { .rtgen_family
= AF_UNSPEC
};
109 nl_send_simple(ev
->sock
, RTM_GETLINK
, NLM_F_DUMP
, &msg
, sizeof(msg
));
119 uloop_fd_delete(&ev
->uloop
);
123 static struct nl_sock
*
124 create_socket(int protocol
, int groups
)
126 struct nl_sock
*sock
;
128 sock
= nl_socket_alloc();
133 nl_join_groups(sock
, groups
);
135 if (nl_connect(sock
, protocol
))
142 create_raw_event_socket(struct event_socket
*ev
, int protocol
, int groups
,
143 uloop_fd_handler cb
, int flags
)
145 ev
->sock
= create_socket(protocol
, groups
);
149 ev
->uloop
.fd
= nl_socket_get_fd(ev
->sock
);
151 if (uloop_fd_add(&ev
->uloop
, ULOOP_READ
|flags
))
158 create_event_socket(struct event_socket
*ev
, int protocol
,
159 int (*cb
)(struct nl_msg
*msg
, void *arg
))
161 if (!create_raw_event_socket(ev
, protocol
, 0, handler_nl_event
, ULOOP_ERROR_CB
))
164 // Install the valid custom callback handler
165 nl_socket_modify_cb(ev
->sock
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, NULL
);
167 // Disable sequence number checking on event sockets
168 nl_socket_disable_seq_check(ev
->sock
);
170 // Increase rx buffer size to 65K on event sockets
172 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
179 system_rtn_aton(const char *src
, unsigned int *dst
)
184 if (!strcmp(src
, "local"))
186 else if (!strcmp(src
, "nat"))
188 else if (!strcmp(src
, "broadcast"))
190 else if (!strcmp(src
, "anycast"))
192 else if (!strcmp(src
, "multicast"))
194 else if (!strcmp(src
, "prohibit"))
196 else if (!strcmp(src
, "unreachable"))
198 else if (!strcmp(src
, "blackhole"))
200 else if (!strcmp(src
, "xresolve"))
202 else if (!strcmp(src
, "unicast"))
204 else if (!strcmp(src
, "throw"))
206 else if (!strcmp(src
, "failed_policy"))
207 n
= RTN_FAILED_POLICY
;
209 n
= strtoul(src
, &e
, 0);
210 if (!e
|| *e
|| e
== src
|| n
> 255)
219 system_tos_aton(const char *src
, unsigned *dst
)
223 *dst
= strtoul(src
, &e
, 16);
224 if (e
== src
|| *e
|| *dst
> 255)
230 int system_init(void)
232 static struct event_socket rtnl_event
;
233 static struct event_socket hotplug_event
;
235 sock_ioctl
= socket(AF_LOCAL
, SOCK_DGRAM
, 0);
236 system_fd_set_cloexec(sock_ioctl
);
238 // Prepare socket for routing / address control
239 sock_rtnl
= create_socket(NETLINK_ROUTE
, 0);
243 if (!create_event_socket(&rtnl_event
, NETLINK_ROUTE
, cb_rtnl_event
))
246 if (!create_raw_event_socket(&hotplug_event
, NETLINK_KOBJECT_UEVENT
, 1,
247 handle_hotplug_event
, 0))
250 // Receive network link events form kernel
251 nl_socket_add_membership(rtnl_event
.sock
, RTNLGRP_LINK
);
256 static void system_set_sysctl(const char *path
, const char *val
)
260 fd
= open(path
, O_WRONLY
);
264 if (write(fd
, val
, strlen(val
))) {}
268 static void system_set_dev_sysctl(const char *path
, const char *device
, const char *val
)
270 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
271 system_set_sysctl(dev_buf
, val
);
274 static void system_set_disable_ipv6(struct device
*dev
, const char *val
)
276 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev
->ifname
, val
);
279 static void system_set_rpfilter(struct device
*dev
, const char *val
)
281 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter", dev
->ifname
, val
);
284 static void system_set_acceptlocal(struct device
*dev
, const char *val
)
286 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local", dev
->ifname
, val
);
289 static void system_set_igmpversion(struct device
*dev
, const char *val
)
291 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version", dev
->ifname
, val
);
294 static void system_set_mldversion(struct device
*dev
, const char *val
)
296 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version", dev
->ifname
, val
);
299 static void system_set_neigh4reachabletime(struct device
*dev
, const char *val
)
301 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
304 static void system_set_neigh6reachabletime(struct device
*dev
, const char *val
)
306 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
309 static void system_set_dadtransmits(struct device
*dev
, const char *val
)
311 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits", dev
->ifname
, val
);
314 static void system_bridge_set_multicast_to_unicast(struct device
*dev
, const char *val
)
316 system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_to_unicast", dev
->ifname
, val
);
319 static void system_bridge_set_hairpin_mode(struct device
*dev
, const char *val
)
321 system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev
->ifname
, val
);
324 static void system_bridge_set_multicast_router(struct device
*dev
, const char *val
, bool bridge
)
326 system_set_dev_sysctl(bridge
? "/sys/class/net/%s/bridge/multicast_router" :
327 "/sys/class/net/%s/brport/multicast_router",
331 static void system_bridge_set_robustness(struct device
*dev
, const char *val
)
333 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_count",
335 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_count",
339 static void system_bridge_set_query_interval(struct device
*dev
, const char *val
)
341 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_interval",
345 static void system_bridge_set_query_response_interval(struct device
*dev
, const char *val
)
347 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_response_interval",
351 static void system_bridge_set_last_member_interval(struct device
*dev
, const char *val
)
353 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_interval",
357 static void system_bridge_set_membership_interval(struct device
*dev
, const char *val
)
359 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_membership_interval",
363 static void system_bridge_set_other_querier_timeout(struct device
*dev
, const char *val
)
365 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier_interval",
369 static void system_bridge_set_startup_query_interval(struct device
*dev
, const char *val
)
371 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_interval",
375 static int system_get_sysctl(const char *path
, char *buf
, const size_t buf_sz
)
377 int fd
= -1, ret
= -1;
379 fd
= open(path
, O_RDONLY
);
383 ssize_t len
= read(fd
, buf
, buf_sz
- 1);
397 system_get_dev_sysctl(const char *path
, const char *device
, char *buf
, const size_t buf_sz
)
399 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
400 return system_get_sysctl(dev_buf
, buf
, buf_sz
);
403 static int system_get_disable_ipv6(struct device
*dev
, char *buf
, const size_t buf_sz
)
405 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
406 dev
->ifname
, buf
, buf_sz
);
409 static int system_get_rpfilter(struct device
*dev
, char *buf
, const size_t buf_sz
)
411 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
412 dev
->ifname
, buf
, buf_sz
);
415 static int system_get_acceptlocal(struct device
*dev
, char *buf
, const size_t buf_sz
)
417 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
418 dev
->ifname
, buf
, buf_sz
);
421 static int system_get_igmpversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
423 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
424 dev
->ifname
, buf
, buf_sz
);
427 static int system_get_mldversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
429 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
430 dev
->ifname
, buf
, buf_sz
);
433 static int system_get_neigh4reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
435 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
436 dev
->ifname
, buf
, buf_sz
);
439 static int system_get_neigh6reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
441 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
442 dev
->ifname
, buf
, buf_sz
);
445 static int system_get_dadtransmits(struct device
*dev
, char *buf
, const size_t buf_sz
)
447 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
448 dev
->ifname
, buf
, buf_sz
);
451 // Evaluate netlink messages
452 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
454 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
455 struct nlattr
*nla
[__IFLA_MAX
];
459 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
462 nlmsg_parse(nh
, sizeof(struct ifinfomsg
), nla
, __IFLA_MAX
- 1, NULL
);
463 if (!nla
[IFLA_IFNAME
])
466 struct device
*dev
= device_get(nla_data(nla
[IFLA_IFNAME
]), false);
470 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev
->ifname
, buf
, sizeof(buf
)))
471 link_state
= strtoul(buf
, NULL
, 0);
473 device_set_link(dev
, link_state
? true : false);
480 handle_hotplug_msg(char *data
, int size
)
482 const char *subsystem
= NULL
, *interface
= NULL
;
483 char *cur
, *end
, *sep
;
488 if (!strncmp(data
, "add@", 4))
490 else if (!strncmp(data
, "remove@", 7))
495 skip
= strlen(data
) + 1;
498 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
499 skip
= strlen(cur
) + 1;
501 sep
= strchr(cur
, '=');
506 if (!strcmp(cur
, "INTERFACE"))
508 else if (!strcmp(cur
, "SUBSYSTEM")) {
510 if (strcmp(subsystem
, "net") != 0)
513 if (subsystem
&& interface
)
519 dev
= device_get(interface
, false);
523 if (dev
->type
!= &simple_device_type
)
526 if (add
&& system_if_force_external(dev
->ifname
))
529 device_set_present(dev
, add
);
533 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
535 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
536 struct sockaddr_nl nla
;
537 unsigned char *buf
= NULL
;
540 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
542 handle_hotplug_msg((char *) buf
, size
);
548 static int system_rtnl_call(struct nl_msg
*msg
)
552 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
558 return nl_wait_for_ack(sock_rtnl
);
561 int system_bridge_delbr(struct device
*bridge
)
563 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
566 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
570 memset(&ifr
, 0, sizeof(ifr
));
572 ifr
.ifr_ifindex
= dev
->ifindex
;
575 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
));
576 return ioctl(sock_ioctl
, cmd
, &ifr
);
579 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
583 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
584 if (stat(buf
, &st
) < 0)
590 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
596 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
597 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
601 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
609 path
= strrchr(buf
, '/');
617 system_bridge_set_wireless(struct device
*bridge
, struct device
*dev
)
619 bool mcast_to_ucast
= dev
->wireless_ap
;
622 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_TO_UNICAST
&&
623 !bridge
->settings
.multicast_to_unicast
)
624 mcast_to_ucast
= false;
626 if (!mcast_to_ucast
|| dev
->wireless_isolate
)
629 system_bridge_set_multicast_to_unicast(dev
, mcast_to_ucast
? "1" : "0");
630 system_bridge_set_hairpin_mode(dev
, hairpin
? "1" : "0");
633 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
639 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
640 if (!oldbr
|| strcmp(oldbr
, bridge
->ifname
) != 0)
641 ret
= system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
644 system_bridge_set_wireless(bridge
, dev
);
646 if (dev
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
647 snprintf(buf
, sizeof(buf
), "%i", dev
->settings
.multicast_router
);
648 system_bridge_set_multicast_router(dev
, buf
, false);
654 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
656 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
659 int system_if_resolve(struct device
*dev
)
662 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
663 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
664 return ifr
.ifr_ifindex
;
669 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
673 memset(&ifr
, 0, sizeof(ifr
));
674 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
));
675 ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
);
676 ifr
.ifr_flags
|= add
;
677 ifr
.ifr_flags
&= ~rem
;
678 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
690 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
692 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
694 return ifa
->ifa_index
== ifindex
;
697 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
699 struct rtmsg
*r
= NLMSG_DATA(hdr
);
700 struct nlattr
*tb
[__RTA_MAX
];
702 if (r
->rtm_protocol
== RTPROT_KERNEL
&&
703 r
->rtm_family
== AF_INET6
)
706 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
710 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
713 static bool check_rule(struct nlmsghdr
*hdr
, int ifindex
)
718 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
720 struct clear_data
*clr
= arg
;
721 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
722 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
728 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
735 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
742 if (hdr
->nlmsg_type
!= RTM_NEWRULE
)
751 if (!cb(hdr
, clr
->dev
? clr
->dev
->ifindex
: 0))
754 if (type
== RTM_DELRULE
)
755 D(SYSTEM
, "Remove a rule\n");
757 D(SYSTEM
, "Remove %s from device %s\n",
758 type
== RTM_DELADDR
? "an address" : "a route",
760 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
761 hdr
= nlmsg_hdr(clr
->msg
);
762 hdr
->nlmsg_type
= type
;
763 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
765 nl_socket_disable_auto_ack(sock_rtnl
);
766 nl_send_auto_complete(sock_rtnl
, clr
->msg
);
767 nl_socket_enable_auto_ack(sock_rtnl
);
773 cb_finish_event(struct nl_msg
*msg
, void *arg
)
781 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
784 *pending
= err
->error
;
789 system_if_clear_entries(struct device
*dev
, int type
, int af
)
791 struct clear_data clr
;
792 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
795 .rtm_flags
= RTM_F_CLONED
,
797 int flags
= NLM_F_DUMP
;
806 clr
.size
= sizeof(struct rtgenmsg
);
809 clr
.size
= sizeof(struct rtmsg
);
818 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
822 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
823 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
824 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
825 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
827 nl_send_auto_complete(sock_rtnl
, clr
.msg
);
829 nl_recvmsgs(sock_rtnl
, cb
);
837 * Clear bridge (membership) state and bring down device
839 void system_if_clear_state(struct device
*dev
)
841 static char buf
[256];
844 device_set_ifindex(dev
, system_if_resolve(dev
));
845 if (dev
->external
|| !dev
->ifindex
)
848 system_if_flags(dev
->ifname
, 0, IFF_UP
);
850 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
851 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
852 system_bridge_delbr(dev
);
856 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
858 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
859 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
862 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
863 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
864 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
865 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
866 system_set_disable_ipv6(dev
, "0");
869 static inline unsigned long
870 sec_to_jiffies(int val
)
872 return (unsigned long) val
* 100;
875 static void system_bridge_conf_multicast_deps(struct device
*bridge
,
876 struct bridge_config
*cfg
,
882 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
||
883 cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
||
884 cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
885 val
= cfg
->robustness
* cfg
->query_interval
+
886 cfg
->query_response_interval
;
888 snprintf(buf
, buf_len
, "%i", val
);
889 system_bridge_set_membership_interval(bridge
, buf
);
891 val
= cfg
->robustness
* cfg
->query_interval
+
892 cfg
->query_response_interval
/ 2;
894 snprintf(buf
, buf_len
, "%i", val
);
895 system_bridge_set_other_querier_timeout(bridge
, buf
);
898 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
899 val
= cfg
->query_interval
/ 4;
901 snprintf(buf
, buf_len
, "%i", val
);
902 system_bridge_set_startup_query_interval(bridge
, buf
);
906 static void system_bridge_conf_multicast(struct device
*bridge
,
907 struct bridge_config
*cfg
,
911 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
912 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
914 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
915 bridge
->ifname
, cfg
->multicast_querier
? "1" : "0");
917 snprintf(buf
, buf_len
, "%i", cfg
->hash_max
);
918 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
919 bridge
->ifname
, buf
);
921 if (bridge
->settings
.flags
& DEV_OPT_MULTICAST_ROUTER
) {
922 snprintf(buf
, buf_len
, "%i", bridge
->settings
.multicast_router
);
923 system_bridge_set_multicast_router(bridge
, buf
, true);
926 if (cfg
->flags
& BRIDGE_OPT_ROBUSTNESS
) {
927 snprintf(buf
, buf_len
, "%i", cfg
->robustness
);
928 system_bridge_set_robustness(bridge
, buf
);
931 if (cfg
->flags
& BRIDGE_OPT_QUERY_INTERVAL
) {
932 snprintf(buf
, buf_len
, "%i", cfg
->query_interval
);
933 system_bridge_set_query_interval(bridge
, buf
);
936 if (cfg
->flags
& BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
) {
937 snprintf(buf
, buf_len
, "%i", cfg
->query_response_interval
);
938 system_bridge_set_query_response_interval(bridge
, buf
);
941 if (cfg
->flags
& BRIDGE_OPT_LAST_MEMBER_INTERVAL
) {
942 snprintf(buf
, buf_len
, "%i", cfg
->last_member_interval
);
943 system_bridge_set_last_member_interval(bridge
, buf
);
946 system_bridge_conf_multicast_deps(bridge
, cfg
, buf
, buf_len
);
949 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
952 unsigned long args
[4] = {};
954 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
957 args
[0] = BRCTL_SET_BRIDGE_STP_STATE
;
958 args
[1] = !!cfg
->stp
;
959 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
961 args
[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY
;
962 args
[1] = sec_to_jiffies(cfg
->forward_delay
);
963 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
965 system_bridge_conf_multicast(bridge
, cfg
, buf
, sizeof(buf
));
967 args
[0] = BRCTL_SET_BRIDGE_PRIORITY
;
968 args
[1] = cfg
->priority
;
969 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
971 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
972 args
[0] = BRCTL_SET_AGEING_TIME
;
973 args
[1] = sec_to_jiffies(cfg
->ageing_time
);
974 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
977 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
978 args
[0] = BRCTL_SET_BRIDGE_HELLO_TIME
;
979 args
[1] = sec_to_jiffies(cfg
->hello_time
);
980 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
983 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
984 args
[0] = BRCTL_SET_BRIDGE_MAX_AGE
;
985 args
[1] = sec_to_jiffies(cfg
->max_age
);
986 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
992 int system_macvlan_add(struct device
*macvlan
, struct device
*dev
, struct macvlan_config
*cfg
)
995 struct nlattr
*linkinfo
, *data
;
996 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
998 static const struct {
1000 enum macvlan_mode val
;
1002 { "private", MACVLAN_MODE_PRIVATE
},
1003 { "vepa", MACVLAN_MODE_VEPA
},
1004 { "bridge", MACVLAN_MODE_BRIDGE
},
1005 { "passthru", MACVLAN_MODE_PASSTHRU
},
1008 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1013 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1015 if (cfg
->flags
& MACVLAN_OPT_MACADDR
)
1016 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
1017 nla_put_string(msg
, IFLA_IFNAME
, macvlan
->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
, "macvlan");
1025 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1026 goto nla_put_failure
;
1029 for (i
= 0; i
< ARRAY_SIZE(modes
); i
++) {
1030 if (strcmp(cfg
->mode
, modes
[i
].name
) != 0)
1033 nla_put_u32(msg
, IFLA_MACVLAN_MODE
, modes
[i
].val
);
1038 nla_nest_end(msg
, data
);
1039 nla_nest_end(msg
, linkinfo
);
1041 rv
= system_rtnl_call(msg
);
1043 D(SYSTEM
, "Error adding macvlan '%s' over '%s': %d\n", macvlan
->ifname
, dev
->ifname
, rv
);
1052 static int system_link_del(const char *ifname
)
1055 struct ifinfomsg iim
= {
1056 .ifi_family
= AF_UNSPEC
,
1060 msg
= nlmsg_alloc_simple(RTM_DELLINK
, NLM_F_REQUEST
);
1065 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1066 nla_put_string(msg
, IFLA_IFNAME
, ifname
);
1067 return system_rtnl_call(msg
);
1070 int system_macvlan_del(struct device
*macvlan
)
1072 return system_link_del(macvlan
->ifname
);
1075 static int system_vlan(struct device
*dev
, int id
)
1077 struct vlan_ioctl_args ifr
= {
1078 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
1079 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
1082 ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1085 ifr
.cmd
= DEL_VLAN_CMD
;
1088 ifr
.cmd
= ADD_VLAN_CMD
;
1091 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
1092 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
1095 int system_vlan_add(struct device
*dev
, int id
)
1097 return system_vlan(dev
, id
);
1100 int system_vlan_del(struct device
*dev
)
1102 return system_vlan(dev
, -1);
1105 int system_vlandev_add(struct device
*vlandev
, struct device
*dev
, struct vlandev_config
*cfg
)
1108 struct nlattr
*linkinfo
, *data
;
1109 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
};
1112 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
1117 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
1118 nla_put_string(msg
, IFLA_IFNAME
, vlandev
->ifname
);
1119 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
1121 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
1122 goto nla_put_failure
;
1124 nla_put_string(msg
, IFLA_INFO_KIND
, "vlan");
1126 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
1127 goto nla_put_failure
;
1129 nla_put_u16(msg
, IFLA_VLAN_ID
, cfg
->vid
);
1131 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1132 nla_put_u16(msg
, IFLA_VLAN_PROTOCOL
, htons(cfg
->proto
));
1134 if(cfg
->proto
== VLAN_PROTO_8021AD
)
1135 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
);
1138 nla_nest_end(msg
, data
);
1139 nla_nest_end(msg
, linkinfo
);
1141 rv
= system_rtnl_call(msg
);
1143 D(SYSTEM
, "Error adding vlandev '%s' over '%s': %d\n", vlandev
->ifname
, dev
->ifname
, rv
);
1152 int system_vlandev_del(struct device
*vlandev
)
1154 return system_link_del(vlandev
->ifname
);
1158 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
1163 memset(&ifr
, 0, sizeof(ifr
));
1164 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1166 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
1167 s
->mtu
= ifr
.ifr_mtu
;
1168 s
->flags
|= DEV_OPT_MTU
;
1171 s
->mtu6
= system_update_ipv6_mtu(dev
, 0);
1173 s
->flags
|= DEV_OPT_MTU6
;
1175 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
1176 s
->txqueuelen
= ifr
.ifr_qlen
;
1177 s
->flags
|= DEV_OPT_TXQUEUELEN
;
1180 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
1181 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
1182 s
->flags
|= DEV_OPT_MACADDR
;
1185 if (!system_get_disable_ipv6(dev
, buf
, sizeof(buf
))) {
1186 s
->ipv6
= !strtoul(buf
, NULL
, 0);
1187 s
->flags
|= DEV_OPT_IPV6
;
1190 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) == 0) {
1191 s
->promisc
= ifr
.ifr_flags
& IFF_PROMISC
;
1192 s
->flags
|= DEV_OPT_PROMISC
;
1194 s
->multicast
= ifr
.ifr_flags
& IFF_MULTICAST
;
1195 s
->flags
|= DEV_OPT_MULTICAST
;
1198 if (!system_get_rpfilter(dev
, buf
, sizeof(buf
))) {
1199 s
->rpfilter
= strtoul(buf
, NULL
, 0);
1200 s
->flags
|= DEV_OPT_RPFILTER
;
1203 if (!system_get_acceptlocal(dev
, buf
, sizeof(buf
))) {
1204 s
->acceptlocal
= strtoul(buf
, NULL
, 0);
1205 s
->flags
|= DEV_OPT_ACCEPTLOCAL
;
1208 if (!system_get_igmpversion(dev
, buf
, sizeof(buf
))) {
1209 s
->igmpversion
= strtoul(buf
, NULL
, 0);
1210 s
->flags
|= DEV_OPT_IGMPVERSION
;
1213 if (!system_get_mldversion(dev
, buf
, sizeof(buf
))) {
1214 s
->mldversion
= strtoul(buf
, NULL
, 0);
1215 s
->flags
|= DEV_OPT_MLDVERSION
;
1218 if (!system_get_neigh4reachabletime(dev
, buf
, sizeof(buf
))) {
1219 s
->neigh4reachabletime
= strtoul(buf
, NULL
, 0);
1220 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1223 if (!system_get_neigh6reachabletime(dev
, buf
, sizeof(buf
))) {
1224 s
->neigh6reachabletime
= strtoul(buf
, NULL
, 0);
1225 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1228 if (!system_get_dadtransmits(dev
, buf
, sizeof(buf
))) {
1229 s
->dadtransmits
= strtoul(buf
, NULL
, 0);
1230 s
->flags
|= DEV_OPT_DADTRANSMITS
;
1235 system_if_set_rps_xps_val(const char *path
, int val
)
1241 if (glob(path
, 0, NULL
, &gl
))
1244 snprintf(val_buf
, sizeof(val_buf
), "%x", val
);
1245 for (i
= 0; i
< gl
.gl_pathc
; i
++)
1246 system_set_sysctl(gl
.gl_pathv
[i
], val_buf
);
1252 system_if_apply_rps_xps(struct device
*dev
, struct device_settings
*s
)
1254 long n_cpus
= sysconf(_SC_NPROCESSORS_ONLN
);
1260 val
= (1 << n_cpus
) - 1;
1261 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/rps_cpus", dev
->ifname
);
1262 system_if_set_rps_xps_val(dev_buf
, s
->rps
? val
: 0);
1264 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/xps_cpus", dev
->ifname
);
1265 system_if_set_rps_xps_val(dev_buf
, s
->xps
? val
: 0);
1269 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
, unsigned int apply_mask
)
1274 memset(&ifr
, 0, sizeof(ifr
));
1275 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1276 if (s
->flags
& DEV_OPT_MTU
& apply_mask
) {
1277 ifr
.ifr_mtu
= s
->mtu
;
1278 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
1279 s
->flags
&= ~DEV_OPT_MTU
;
1281 if (s
->flags
& DEV_OPT_MTU6
& apply_mask
) {
1282 system_update_ipv6_mtu(dev
, s
->mtu6
);
1284 if (s
->flags
& DEV_OPT_TXQUEUELEN
& apply_mask
) {
1285 ifr
.ifr_qlen
= s
->txqueuelen
;
1286 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
1287 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
1289 if ((s
->flags
& DEV_OPT_MACADDR
& apply_mask
) && !dev
->external
) {
1290 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
1291 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
1292 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
1293 s
->flags
&= ~DEV_OPT_MACADDR
;
1295 if (s
->flags
& DEV_OPT_IPV6
& apply_mask
)
1296 system_set_disable_ipv6(dev
, s
->ipv6
? "0" : "1");
1297 if (s
->flags
& DEV_OPT_PROMISC
& apply_mask
) {
1298 if (system_if_flags(dev
->ifname
, s
->promisc
? IFF_PROMISC
: 0,
1299 !s
->promisc
? IFF_PROMISC
: 0) < 0)
1300 s
->flags
&= ~DEV_OPT_PROMISC
;
1302 if (s
->flags
& DEV_OPT_RPFILTER
& apply_mask
) {
1303 snprintf(buf
, sizeof(buf
), "%d", s
->rpfilter
);
1304 system_set_rpfilter(dev
, buf
);
1306 if (s
->flags
& DEV_OPT_ACCEPTLOCAL
& apply_mask
)
1307 system_set_acceptlocal(dev
, s
->acceptlocal
? "1" : "0");
1308 if (s
->flags
& DEV_OPT_IGMPVERSION
& apply_mask
) {
1309 snprintf(buf
, sizeof(buf
), "%d", s
->igmpversion
);
1310 system_set_igmpversion(dev
, buf
);
1312 if (s
->flags
& DEV_OPT_MLDVERSION
& apply_mask
) {
1313 snprintf(buf
, sizeof(buf
), "%d", s
->mldversion
);
1314 system_set_mldversion(dev
, buf
);
1316 if (s
->flags
& DEV_OPT_NEIGHREACHABLETIME
& apply_mask
) {
1317 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4reachabletime
);
1318 system_set_neigh4reachabletime(dev
, buf
);
1319 snprintf(buf
, sizeof(buf
), "%d", s
->neigh6reachabletime
);
1320 system_set_neigh6reachabletime(dev
, buf
);
1322 if (s
->flags
& DEV_OPT_DADTRANSMITS
& apply_mask
) {
1323 snprintf(buf
, sizeof(buf
), "%d", s
->dadtransmits
);
1324 system_set_dadtransmits(dev
, buf
);
1326 if (s
->flags
& DEV_OPT_MULTICAST
& apply_mask
) {
1327 if (system_if_flags(dev
->ifname
, s
->multicast
? IFF_MULTICAST
: 0,
1328 !s
->multicast
? IFF_MULTICAST
: 0) < 0)
1329 s
->flags
&= ~DEV_OPT_MULTICAST
;
1332 system_if_apply_rps_xps(dev
, s
);
1335 int system_if_up(struct device
*dev
)
1337 system_if_get_settings(dev
, &dev
->orig_settings
);
1338 /* Only keep orig settings based on what needs to be set */
1339 dev
->orig_settings
.valid_flags
= dev
->orig_settings
.flags
;
1340 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
1341 system_if_apply_settings(dev
, &dev
->settings
, dev
->settings
.flags
);
1342 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
1345 int system_if_down(struct device
*dev
)
1347 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
1348 system_if_apply_settings(dev
, &dev
->orig_settings
, dev
->orig_settings
.flags
);
1352 struct if_check_data
{
1358 #ifndef IFF_LOWER_UP
1359 #define IFF_LOWER_UP 0x10000
1362 static int cb_if_check_valid(struct nl_msg
*msg
, void *arg
)
1364 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
1365 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
1366 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1368 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
1371 device_set_present(chk
->dev
, ifi
->ifi_index
> 0 ? true : false);
1372 device_set_link(chk
->dev
, ifi
->ifi_flags
& IFF_LOWER_UP
? true : false);
1377 static int cb_if_check_ack(struct nl_msg
*msg
, void *arg
)
1379 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1384 static int cb_if_check_error(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
1386 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1388 device_set_present(chk
->dev
, false);
1389 device_set_link(chk
->dev
, false);
1390 chk
->pending
= err
->error
;
1395 int system_if_check(struct device
*dev
)
1397 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1399 struct ifinfomsg ifi
= {
1400 .ifi_family
= AF_UNSPEC
,
1403 struct if_check_data chk
= {
1409 msg
= nlmsg_alloc_simple(RTM_GETLINK
, 0);
1413 if (nlmsg_append(msg
, &ifi
, sizeof(ifi
), 0) ||
1414 nla_put_string(msg
, IFLA_IFNAME
, dev
->ifname
))
1417 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_if_check_valid
, &chk
);
1418 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, cb_if_check_ack
, &chk
);
1419 nl_cb_err(cb
, NL_CB_CUSTOM
, cb_if_check_error
, &chk
);
1421 nl_send_auto_complete(sock_rtnl
, msg
);
1422 while (chk
.pending
> 0)
1423 nl_recvmsgs(sock_rtnl
, cb
);
1435 system_if_get_parent(struct device
*dev
)
1437 char buf
[64], *devname
;
1438 int ifindex
, iflink
, len
;
1441 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
1442 f
= fopen(buf
, "r");
1446 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
1453 iflink
= strtoul(buf
, NULL
, 0);
1454 ifindex
= system_if_resolve(dev
);
1455 if (!iflink
|| iflink
== ifindex
)
1458 devname
= if_indextoname(iflink
, buf
);
1462 return device_get(devname
, true);
1466 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
1472 fd
= openat(dir_fd
, file
, O_RDONLY
);
1477 len
= read(fd
, buf
, len
- 1);
1481 } else if (len
> 0) {
1484 c
= strchr(buf
, '\n');
1497 read_uint64_file(int dir_fd
, const char *file
, uint64_t *val
)
1502 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
1504 *val
= strtoull(buf
, NULL
, 0);
1509 /* Assume advertised flags == supported flags */
1510 static const struct {
1513 } ethtool_link_modes
[] = {
1514 { ADVERTISED_10baseT_Half
, "10H" },
1515 { ADVERTISED_10baseT_Full
, "10F" },
1516 { ADVERTISED_100baseT_Half
, "100H" },
1517 { ADVERTISED_100baseT_Full
, "100F" },
1518 { ADVERTISED_1000baseT_Half
, "1000H" },
1519 { ADVERTISED_1000baseT_Full
, "1000F" },
1522 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
1525 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
1526 if (mask
& ethtool_link_modes
[i
].mask
)
1527 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
1532 system_if_force_external(const char *ifname
)
1537 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/phy80211", ifname
);
1538 return stat(buf
, &s
) == 0;
1542 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
1544 struct ethtool_cmd ecmd
;
1550 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s", dev
->ifname
);
1551 dir_fd
= open(buf
, O_DIRECTORY
);
1553 memset(&ecmd
, 0, sizeof(ecmd
));
1554 memset(&ifr
, 0, sizeof(ifr
));
1555 strcpy(ifr
.ifr_name
, dev
->ifname
);
1556 ifr
.ifr_data
= (caddr_t
) &ecmd
;
1557 ecmd
.cmd
= ETHTOOL_GSET
;
1559 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
1560 c
= blobmsg_open_array(b
, "link-advertising");
1561 system_add_link_modes(b
, ecmd
.advertising
);
1562 blobmsg_close_array(b
, c
);
1564 c
= blobmsg_open_array(b
, "link-supported");
1565 system_add_link_modes(b
, ecmd
.supported
);
1566 blobmsg_close_array(b
, c
);
1568 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
1569 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
1570 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
1571 blobmsg_add_string_buffer(b
);
1579 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
1581 const char *const counters
[] = {
1582 "collisions", "rx_frame_errors", "tx_compressed",
1583 "multicast", "rx_length_errors", "tx_dropped",
1584 "rx_bytes", "rx_missed_errors", "tx_errors",
1585 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1586 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1587 "rx_dropped", "tx_aborted_errors", "tx_packets",
1588 "rx_errors", "tx_bytes", "tx_window_errors",
1589 "rx_fifo_errors", "tx_carrier_errors",
1596 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
1597 stats_dir
= open(buf
, O_DIRECTORY
);
1601 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
1602 if (read_uint64_file(stats_dir
, counters
[i
], &val
))
1603 blobmsg_add_u64(b
, counters
[i
], val
);
1609 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
1611 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
1612 int alen
= v4
? 4 : 16;
1613 unsigned int flags
= 0;
1614 struct ifaddrmsg ifa
= {
1615 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1616 .ifa_prefixlen
= addr
->mask
,
1617 .ifa_index
= dev
->ifindex
,
1621 if (cmd
== RTM_NEWADDR
)
1622 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1624 msg
= nlmsg_alloc_simple(cmd
, flags
);
1628 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
1629 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
1631 if (addr
->broadcast
)
1632 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
1633 if (addr
->point_to_point
)
1634 nla_put_u32(msg
, IFA_ADDRESS
, addr
->point_to_point
);
1636 time_t now
= system_get_rtime();
1637 struct ifa_cacheinfo cinfo
= {0xffffffffU
, 0xffffffffU
, 0, 0};
1639 if (addr
->preferred_until
) {
1640 int64_t preferred
= addr
->preferred_until
- now
;
1643 else if (preferred
> UINT32_MAX
)
1644 preferred
= UINT32_MAX
;
1646 cinfo
.ifa_prefered
= preferred
;
1649 if (addr
->valid_until
) {
1650 int64_t valid
= addr
->valid_until
- now
;
1655 else if (valid
> UINT32_MAX
)
1658 cinfo
.ifa_valid
= valid
;
1661 nla_put(msg
, IFA_CACHEINFO
, sizeof(cinfo
), &cinfo
);
1663 if (cmd
== RTM_NEWADDR
&& (addr
->flags
& DEVADDR_OFFLINK
))
1664 nla_put_u32(msg
, IFA_FLAGS
, IFA_F_NOPREFIXROUTE
);
1667 return system_rtnl_call(msg
);
1670 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
1672 return system_addr(dev
, addr
, RTM_NEWADDR
);
1675 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
1677 return system_addr(dev
, addr
, RTM_DELADDR
);
1680 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
1682 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
1684 unsigned int flags
= 0;
1687 have_gw
= !!route
->nexthop
.in
.s_addr
;
1689 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
1690 route
->nexthop
.in6
.s6_addr32
[1] ||
1691 route
->nexthop
.in6
.s6_addr32
[2] ||
1692 route
->nexthop
.in6
.s6_addr32
[3];
1694 unsigned int table
= (route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))
1695 ? route
->table
: RT_TABLE_MAIN
;
1697 struct rtmsg rtm
= {
1698 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1699 .rtm_dst_len
= route
->mask
,
1700 .rtm_src_len
= route
->sourcemask
,
1701 .rtm_table
= (table
< 256) ? table
: RT_TABLE_UNSPEC
,
1702 .rtm_protocol
= (route
->flags
& DEVADDR_KERNEL
) ? RTPROT_KERNEL
: RTPROT_STATIC
,
1703 .rtm_scope
= RT_SCOPE_NOWHERE
,
1704 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
1705 .rtm_flags
= (route
->flags
& DEVROUTE_ONLINK
) ? RTNH_F_ONLINK
: 0,
1709 if (cmd
== RTM_NEWROUTE
) {
1710 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1712 if (!dev
) { // Add null-route
1713 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1714 rtm
.rtm_type
= RTN_UNREACHABLE
;
1717 rtm
.rtm_scope
= (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
1720 if (route
->flags
& DEVROUTE_TYPE
) {
1721 rtm
.rtm_type
= route
->type
;
1722 if (!(route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))) {
1723 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_BROADCAST
||
1724 rtm
.rtm_type
== RTN_NAT
|| rtm
.rtm_type
== RTN_ANYCAST
)
1725 rtm
.rtm_table
= RT_TABLE_LOCAL
;
1728 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_NAT
) {
1729 rtm
.rtm_scope
= RT_SCOPE_HOST
;
1730 } else if (rtm
.rtm_type
== RTN_BROADCAST
|| rtm
.rtm_type
== RTN_MULTICAST
||
1731 rtm
.rtm_type
== RTN_ANYCAST
) {
1732 rtm
.rtm_scope
= RT_SCOPE_LINK
;
1733 } else if (rtm
.rtm_type
== RTN_BLACKHOLE
|| rtm
.rtm_type
== RTN_UNREACHABLE
||
1734 rtm
.rtm_type
== RTN_PROHIBIT
|| rtm
.rtm_type
== RTN_FAILED_POLICY
) {
1735 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1740 msg
= nlmsg_alloc_simple(cmd
, flags
);
1744 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
1747 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
1749 if (route
->sourcemask
) {
1750 if (rtm
.rtm_family
== AF_INET
)
1751 nla_put(msg
, RTA_PREFSRC
, alen
, &route
->source
);
1753 nla_put(msg
, RTA_SRC
, alen
, &route
->source
);
1756 if (route
->metric
> 0)
1757 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
1760 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
1763 nla_put_u32(msg
, RTA_OIF
, dev
->ifindex
);
1766 nla_put_u32(msg
, RTA_TABLE
, table
);
1768 if (route
->flags
& DEVROUTE_MTU
) {
1769 struct nlattr
*metrics
;
1771 if (!(metrics
= nla_nest_start(msg
, RTA_METRICS
)))
1772 goto nla_put_failure
;
1774 nla_put_u32(msg
, RTAX_MTU
, route
->mtu
);
1776 nla_nest_end(msg
, metrics
);
1779 return system_rtnl_call(msg
);
1786 int system_add_route(struct device
*dev
, struct device_route
*route
)
1788 return system_rt(dev
, route
, RTM_NEWROUTE
);
1791 int system_del_route(struct device
*dev
, struct device_route
*route
)
1793 return system_rt(dev
, route
, RTM_DELROUTE
);
1796 int system_flush_routes(void)
1798 const char *names
[] = {
1799 "/proc/sys/net/ipv4/route/flush",
1800 "/proc/sys/net/ipv6/route/flush"
1804 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
1805 fd
= open(names
[i
], O_WRONLY
);
1809 if (write(fd
, "-1", 2)) {}
1815 bool system_resolve_rt_type(const char *type
, unsigned int *id
)
1817 return system_rtn_aton(type
, id
);
1820 bool system_resolve_rt_table(const char *name
, unsigned int *id
)
1824 unsigned int n
, table
= RT_TABLE_UNSPEC
;
1826 /* first try to parse table as number */
1827 if ((n
= strtoul(name
, &e
, 0)) > 0 && !*e
)
1830 /* handle well known aliases */
1831 else if (!strcmp(name
, "default"))
1832 table
= RT_TABLE_DEFAULT
;
1833 else if (!strcmp(name
, "main"))
1834 table
= RT_TABLE_MAIN
;
1835 else if (!strcmp(name
, "local"))
1836 table
= RT_TABLE_LOCAL
;
1838 /* try to look up name in /etc/iproute2/rt_tables */
1839 else if ((f
= fopen("/etc/iproute2/rt_tables", "r")) != NULL
)
1841 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
)
1843 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
1846 n
= strtoul(e
, NULL
, 10);
1847 e
= strtok(NULL
, " \t\n");
1849 if (e
&& !strcmp(e
, name
))
1859 if (table
== RT_TABLE_UNSPEC
)
1866 bool system_is_default_rt_table(unsigned int id
)
1868 return (id
== RT_TABLE_MAIN
);
1871 bool system_resolve_rpfilter(const char *filter
, unsigned int *id
)
1876 if (!strcmp(filter
, "strict"))
1878 else if (!strcmp(filter
, "loose"))
1881 n
= strtoul(filter
, &e
, 0);
1882 if (*e
|| e
== filter
|| n
> 2)
1890 static int system_iprule(struct iprule
*rule
, int cmd
)
1892 int alen
= ((rule
->flags
& IPRULE_FAMILY
) == IPRULE_INET4
) ? 4 : 16;
1895 struct rtmsg rtm
= {
1896 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1897 .rtm_protocol
= RTPROT_STATIC
,
1898 .rtm_scope
= RT_SCOPE_UNIVERSE
,
1899 .rtm_table
= RT_TABLE_UNSPEC
,
1900 .rtm_type
= RTN_UNSPEC
,
1904 if (cmd
== RTM_NEWRULE
)
1905 rtm
.rtm_type
= RTN_UNICAST
;
1908 rtm
.rtm_flags
|= FIB_RULE_INVERT
;
1910 if (rule
->flags
& IPRULE_SRC
)
1911 rtm
.rtm_src_len
= rule
->src_mask
;
1913 if (rule
->flags
& IPRULE_DEST
)
1914 rtm
.rtm_dst_len
= rule
->dest_mask
;
1916 if (rule
->flags
& IPRULE_TOS
)
1917 rtm
.rtm_tos
= rule
->tos
;
1919 if (rule
->flags
& IPRULE_LOOKUP
) {
1920 if (rule
->lookup
< 256)
1921 rtm
.rtm_table
= rule
->lookup
;
1924 if (rule
->flags
& IPRULE_ACTION
)
1925 rtm
.rtm_type
= rule
->action
;
1926 else if (rule
->flags
& IPRULE_GOTO
)
1927 rtm
.rtm_type
= FR_ACT_GOTO
;
1928 else if (!(rule
->flags
& (IPRULE_LOOKUP
| IPRULE_ACTION
| IPRULE_GOTO
)))
1929 rtm
.rtm_type
= FR_ACT_NOP
;
1931 msg
= nlmsg_alloc_simple(cmd
, NLM_F_REQUEST
);
1936 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
1938 if (rule
->flags
& IPRULE_IN
)
1939 nla_put(msg
, FRA_IFNAME
, strlen(rule
->in_dev
) + 1, rule
->in_dev
);
1941 if (rule
->flags
& IPRULE_OUT
)
1942 nla_put(msg
, FRA_OIFNAME
, strlen(rule
->out_dev
) + 1, rule
->out_dev
);
1944 if (rule
->flags
& IPRULE_SRC
)
1945 nla_put(msg
, FRA_SRC
, alen
, &rule
->src_addr
);
1947 if (rule
->flags
& IPRULE_DEST
)
1948 nla_put(msg
, FRA_DST
, alen
, &rule
->dest_addr
);
1950 if (rule
->flags
& IPRULE_PRIORITY
)
1951 nla_put_u32(msg
, FRA_PRIORITY
, rule
->priority
);
1952 else if (cmd
== RTM_NEWRULE
)
1953 nla_put_u32(msg
, FRA_PRIORITY
, rule
->order
);
1955 if (rule
->flags
& IPRULE_FWMARK
)
1956 nla_put_u32(msg
, FRA_FWMARK
, rule
->fwmark
);
1958 if (rule
->flags
& IPRULE_FWMASK
)
1959 nla_put_u32(msg
, FRA_FWMASK
, rule
->fwmask
);
1961 if (rule
->flags
& IPRULE_LOOKUP
) {
1962 if (rule
->lookup
>= 256)
1963 nla_put_u32(msg
, FRA_TABLE
, rule
->lookup
);
1966 if (rule
->flags
& IPRULE_GOTO
)
1967 nla_put_u32(msg
, FRA_GOTO
, rule
->gotoid
);
1969 return system_rtnl_call(msg
);
1972 int system_add_iprule(struct iprule
*rule
)
1974 return system_iprule(rule
, RTM_NEWRULE
);
1977 int system_del_iprule(struct iprule
*rule
)
1979 return system_iprule(rule
, RTM_DELRULE
);
1982 int system_flush_iprules(void)
1987 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET
);
1988 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET6
);
1990 memset(&rule
, 0, sizeof(rule
));
1993 rule
.flags
= IPRULE_INET4
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
1996 rule
.lookup
= RT_TABLE_LOCAL
;
1997 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1999 rule
.priority
= 32766;
2000 rule
.lookup
= RT_TABLE_MAIN
;
2001 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2003 rule
.priority
= 32767;
2004 rule
.lookup
= RT_TABLE_DEFAULT
;
2005 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2008 rule
.flags
= IPRULE_INET6
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
2011 rule
.lookup
= RT_TABLE_LOCAL
;
2012 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2014 rule
.priority
= 32766;
2015 rule
.lookup
= RT_TABLE_MAIN
;
2016 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
2021 bool system_resolve_iprule_action(const char *action
, unsigned int *id
)
2023 return system_rtn_aton(action
, id
);
2026 time_t system_get_rtime(void)
2031 if (syscall(__NR_clock_gettime
, CLOCK_MONOTONIC
, &ts
) == 0)
2034 if (gettimeofday(&tv
, NULL
) == 0)
2041 #define IP_DF 0x4000
2044 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
2048 memset(&ifr
, 0, sizeof(ifr
));
2049 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
));
2050 ifr
.ifr_ifru
.ifru_data
= p
;
2051 return ioctl(sock_ioctl
, cmd
, &ifr
);
2054 #ifdef IFLA_IPTUN_MAX
2055 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
2056 static int system_add_gre_tunnel(const char *name
, const char *kind
,
2057 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2060 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2061 struct blob_attr
*cur
;
2062 uint32_t ikey
= 0, okey
= 0, flags
= 0, flowinfo
= 0;
2063 uint16_t iflags
= 0, oflags
= 0;
2065 int ret
= 0, ttl
= 64;
2067 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2071 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2072 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2074 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2080 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2081 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2088 nla_put_u32(nlm
, IFLA_GRE_LINK
, link
);
2090 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2091 ttl
= blobmsg_get_u32(cur
);
2093 nla_put_u8(nlm
, IFLA_GRE_TTL
, ttl
);
2095 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2096 char *str
= blobmsg_get_string(cur
);
2097 if (strcmp(str
, "inherit")) {
2100 if (!system_tos_aton(str
, &uval
)) {
2106 flowinfo
|= htonl(uval
<< 20) & IP6_FLOWINFO_TCLASS
;
2111 flags
|= IP6_TNL_F_USE_ORIG_TCLASS
;
2117 if ((cur
= tb
[TUNNEL_ATTR_INFO
]) && (blobmsg_type(cur
) == BLOBMSG_TYPE_STRING
)) {
2118 uint8_t icsum
, ocsum
, iseqno
, oseqno
;
2119 if (sscanf(blobmsg_get_string(cur
), "%u,%u,%hhu,%hhu,%hhu,%hhu",
2120 &ikey
, &okey
, &icsum
, &ocsum
, &iseqno
, &oseqno
) < 6) {
2145 struct in6_addr in6buf
;
2146 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2147 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2151 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(in6buf
), &in6buf
);
2154 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2155 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2159 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(in6buf
), &in6buf
);
2161 nla_put_u8(nlm
, IFLA_GRE_ENCAP_LIMIT
, 4);
2164 nla_put_u32(nlm
, IFLA_GRE_FLOWINFO
, flowinfo
);
2167 nla_put_u32(nlm
, IFLA_GRE_FLAGS
, flags
);
2169 struct in_addr inbuf
;
2172 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2173 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2177 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(inbuf
), &inbuf
);
2180 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2181 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2185 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(inbuf
), &inbuf
);
2187 if (IN_MULTICAST(ntohl(inbuf
.s_addr
))) {
2189 okey
= inbuf
.s_addr
;
2194 ikey
= inbuf
.s_addr
;
2200 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2201 set_df
= blobmsg_get_bool(cur
);
2203 /* ttl !=0 and nopmtudisc are incompatible */
2204 if (ttl
&& !set_df
) {
2209 nla_put_u8(nlm
, IFLA_GRE_PMTUDISC
, set_df
? 1 : 0);
2211 nla_put_u8(nlm
, IFLA_GRE_TOS
, tos
);
2215 nla_put_u16(nlm
, IFLA_GRE_OFLAGS
, oflags
);
2218 nla_put_u16(nlm
, IFLA_GRE_IFLAGS
, iflags
);
2221 nla_put_u32(nlm
, IFLA_GRE_OKEY
, okey
);
2224 nla_put_u32(nlm
, IFLA_GRE_IKEY
, ikey
);
2226 nla_nest_end(nlm
, infodata
);
2227 nla_nest_end(nlm
, linkinfo
);
2229 return system_rtnl_call(nlm
);
2238 static int system_add_vti_tunnel(const char *name
, const char *kind
,
2239 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
2242 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
2243 struct blob_attr
*cur
;
2244 uint32_t ikey
= 0, okey
= 0;
2247 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2251 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2252 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2254 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2260 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
2261 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2268 nla_put_u32(nlm
, IFLA_VTI_LINK
, link
);
2270 if ((cur
= tb
[TUNNEL_ATTR_INFO
]) && (blobmsg_type(cur
) == BLOBMSG_TYPE_STRING
)) {
2271 if (sscanf(blobmsg_get_string(cur
), "%u,%u",
2272 &ikey
, &okey
) < 2) {
2279 struct in6_addr in6buf
;
2280 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2281 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2285 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(in6buf
), &in6buf
);
2288 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2289 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2293 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(in6buf
), &in6buf
);
2297 struct in_addr inbuf
;
2299 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2300 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2304 nla_put(nlm
, IFLA_VTI_LOCAL
, sizeof(inbuf
), &inbuf
);
2307 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2308 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2312 nla_put(nlm
, IFLA_VTI_REMOTE
, sizeof(inbuf
), &inbuf
);
2318 nla_put_u32(nlm
, IFLA_VTI_OKEY
, htonl(okey
));
2321 nla_put_u32(nlm
, IFLA_VTI_IKEY
, htonl(ikey
));
2323 nla_nest_end(nlm
, infodata
);
2324 nla_nest_end(nlm
, linkinfo
);
2326 return system_rtnl_call(nlm
);
2334 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
, const unsigned int link
, struct blob_attr
**tb
)
2336 struct blob_attr
*cur
;
2338 struct ip_tunnel_parm p
= {
2347 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
]) &&
2348 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.saddr
) < 1)
2351 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
]) &&
2352 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.daddr
) < 1)
2355 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2356 set_df
= blobmsg_get_bool(cur
);
2358 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2359 p
.iph
.ttl
= blobmsg_get_u32(cur
);
2361 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2362 char *str
= blobmsg_get_string(cur
);
2363 if (strcmp(str
, "inherit")) {
2366 if (!system_tos_aton(str
, &uval
))
2374 p
.iph
.frag_off
= set_df
? htons(IP_DF
) : 0;
2375 /* ttl !=0 and nopmtudisc are incompatible */
2376 if (p
.iph
.ttl
&& p
.iph
.frag_off
== 0)
2379 strncpy(p
.name
, name
, sizeof(p
.name
));
2381 switch (p
.iph
.protocol
) {
2383 return tunnel_ioctl("tunl0", SIOCADDTUNNEL
, &p
);
2385 return tunnel_ioctl("sit0", SIOCADDTUNNEL
, &p
);
2392 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
)
2394 struct blob_attr
*cur
;
2397 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2399 str
= blobmsg_data(cur
);
2401 if (!strcmp(str
, "greip") || !strcmp(str
, "gretapip") ||
2402 !strcmp(str
, "greip6") || !strcmp(str
, "gretapip6") ||
2403 !strcmp(str
, "vtiip") || !strcmp(str
, "vtiip6"))
2404 return system_link_del(name
);
2406 return tunnel_ioctl(name
, SIOCDELTUNNEL
, NULL
);
2409 int system_del_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2411 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2413 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2414 blob_data(attr
), blob_len(attr
));
2416 return __system_del_ip_tunnel(name
, tb
);
2419 int system_update_ipv6_mtu(struct device
*dev
, int mtu
)
2423 snprintf(buf
, sizeof(buf
), "/proc/sys/net/ipv6/conf/%s/mtu",
2426 int fd
= open(buf
, O_RDWR
);
2429 ssize_t len
= read(fd
, buf
, sizeof(buf
) - 1);
2436 if (write(fd
, buf
, snprintf(buf
, sizeof(buf
), "%i", mtu
)) > 0)
2445 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2447 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2448 struct blob_attr
*cur
;
2451 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2452 blob_data(attr
), blob_len(attr
));
2454 __system_del_ip_tunnel(name
, tb
);
2456 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2458 str
= blobmsg_data(cur
);
2460 unsigned int ttl
= 0;
2461 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
2462 ttl
= blobmsg_get_u32(cur
);
2467 unsigned int link
= 0;
2468 if ((cur
= tb
[TUNNEL_ATTR_LINK
])) {
2469 struct interface
*iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
2473 if (iface
->l3_dev
.dev
)
2474 link
= iface
->l3_dev
.dev
->ifindex
;
2477 if (!strcmp(str
, "sit")) {
2478 if (system_add_proto_tunnel(name
, IPPROTO_IPV6
, link
, tb
) < 0)
2482 if ((cur
= tb
[TUNNEL_ATTR_6RD_PREFIX
])) {
2484 struct ip_tunnel_6rd p6
;
2486 memset(&p6
, 0, sizeof(p6
));
2488 if (!parse_ip_and_netmask(AF_INET6
, blobmsg_data(cur
),
2489 &p6
.prefix
, &mask
) || mask
> 128)
2491 p6
.prefixlen
= mask
;
2493 if ((cur
= tb
[TUNNEL_ATTR_6RD_RELAY_PREFIX
])) {
2494 if (!parse_ip_and_netmask(AF_INET
, blobmsg_data(cur
),
2495 &p6
.relay_prefix
, &mask
) || mask
> 32)
2497 p6
.relay_prefixlen
= mask
;
2500 if (tunnel_ioctl(name
, SIOCADD6RD
, &p6
) < 0) {
2501 __system_del_ip_tunnel(name
, tb
);
2506 #ifdef IFLA_IPTUN_MAX
2507 } else if (!strcmp(str
, "ipip6")) {
2508 struct nl_msg
*nlm
= nlmsg_alloc_simple(RTM_NEWLINK
,
2509 NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2510 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
};
2516 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2517 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2520 nla_put_u32(nlm
, IFLA_LINK
, link
);
2522 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2527 nla_put_string(nlm
, IFLA_INFO_KIND
, "ip6tnl");
2528 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2535 nla_put_u32(nlm
, IFLA_IPTUN_LINK
, link
);
2537 nla_put_u8(nlm
, IFLA_IPTUN_PROTO
, IPPROTO_IPIP
);
2538 nla_put_u8(nlm
, IFLA_IPTUN_TTL
, (ttl
) ? ttl
: 64);
2539 nla_put_u8(nlm
, IFLA_IPTUN_ENCAP_LIMIT
, 4);
2541 struct in6_addr in6buf
;
2542 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2543 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2547 nla_put(nlm
, IFLA_IPTUN_LOCAL
, sizeof(in6buf
), &in6buf
);
2550 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2551 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2555 nla_put(nlm
, IFLA_IPTUN_REMOTE
, sizeof(in6buf
), &in6buf
);
2558 #ifdef IFLA_IPTUN_FMR_MAX
2559 if ((cur
= tb
[TUNNEL_ATTR_FMRS
])) {
2560 struct nlattr
*fmrs
= nla_nest_start(nlm
, IFLA_IPTUN_FMRS
);
2562 struct blob_attr
*fmr
;
2563 unsigned rem
, fmrcnt
= 0;
2564 blobmsg_for_each_attr(fmr
, cur
, rem
) {
2565 if (blobmsg_type(fmr
) != BLOBMSG_TYPE_STRING
)
2568 unsigned ip4len
, ip6len
, ealen
, offset
= 6;
2572 if (sscanf(blobmsg_get_string(fmr
), "%47[^/]/%u,%15[^/]/%u,%u,%u",
2573 ip6buf
, &ip6len
, ip4buf
, &ip4len
, &ealen
, &offset
) < 5) {
2578 struct in6_addr ip6prefix
;
2579 struct in_addr ip4prefix
;
2580 if (inet_pton(AF_INET6
, ip6buf
, &ip6prefix
) != 1 ||
2581 inet_pton(AF_INET
, ip4buf
, &ip4prefix
) != 1) {
2586 struct nlattr
*rule
= nla_nest_start(nlm
, ++fmrcnt
);
2588 nla_put(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX
, sizeof(ip6prefix
), &ip6prefix
);
2589 nla_put(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX
, sizeof(ip4prefix
), &ip4prefix
);
2590 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX_LEN
, ip6len
);
2591 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX_LEN
, ip4len
);
2592 nla_put_u8(nlm
, IFLA_IPTUN_FMR_EA_LEN
, ealen
);
2593 nla_put_u8(nlm
, IFLA_IPTUN_FMR_OFFSET
, offset
);
2595 nla_nest_end(nlm
, rule
);
2598 nla_nest_end(nlm
, fmrs
);
2602 nla_nest_end(nlm
, infodata
);
2603 nla_nest_end(nlm
, linkinfo
);
2605 return system_rtnl_call(nlm
);
2609 } else if (!strcmp(str
, "greip")) {
2610 return system_add_gre_tunnel(name
, "gre", link
, tb
, false);
2611 } else if (!strcmp(str
, "gretapip")) {
2612 return system_add_gre_tunnel(name
, "gretap", link
, tb
, false);
2613 } else if (!strcmp(str
, "greip6")) {
2614 return system_add_gre_tunnel(name
, "ip6gre", link
, tb
, true);
2615 } else if (!strcmp(str
, "gretapip6")) {
2616 return system_add_gre_tunnel(name
, "ip6gretap", link
, tb
, true);
2618 } else if (!strcmp(str
, "vtiip")) {
2619 return system_add_vti_tunnel(name
, "vti", link
, tb
, false);
2620 } else if (!strcmp(str
, "vtiip6")) {
2621 return system_add_vti_tunnel(name
, "vti6", link
, tb
, true);
2624 } else if (!strcmp(str
, "ipip")) {
2625 return system_add_proto_tunnel(name
, IPPROTO_IPIP
, link
, tb
);