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_link.h>
34 #include <linux/if_vlan.h>
35 #include <linux/if_bridge.h>
36 #include <linux/if_tunnel.h>
37 #include <linux/ip6_tunnel.h>
38 #include <linux/ethtool.h>
39 #include <linux/fib_rules.h>
40 #include <linux/version.h>
42 #ifndef RTN_FAILED_POLICY
43 #define RTN_FAILED_POLICY 12
46 #ifndef RT_TABLE_PRELOCAL
47 #define RT_TABLE_PRELOCAL 128
56 #include <netlink/msg.h>
57 #include <netlink/attr.h>
58 #include <netlink/socket.h>
59 #include <libubox/uloop.h>
66 struct uloop_fd uloop
;
71 static int sock_ioctl
= -1;
72 static struct nl_sock
*sock_rtnl
= NULL
;
74 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
);
75 static void handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
);
77 static char dev_buf
[256];
80 handler_nl_event(struct uloop_fd
*u
, unsigned int events
)
82 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
84 socklen_t errlen
= sizeof(err
);
87 nl_recvmsgs_default(ev
->sock
);
91 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
96 // Increase rx buffer size on netlink socket
98 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
101 // Request full dump since some info got dropped
102 struct rtgenmsg msg
= { .rtgen_family
= AF_UNSPEC
};
103 nl_send_simple(ev
->sock
, RTM_GETLINK
, NLM_F_DUMP
, &msg
, sizeof(msg
));
113 uloop_fd_delete(&ev
->uloop
);
117 static struct nl_sock
*
118 create_socket(int protocol
, int groups
)
120 struct nl_sock
*sock
;
122 sock
= nl_socket_alloc();
127 nl_join_groups(sock
, groups
);
129 if (nl_connect(sock
, protocol
))
136 create_raw_event_socket(struct event_socket
*ev
, int protocol
, int groups
,
137 uloop_fd_handler cb
, int flags
)
139 ev
->sock
= create_socket(protocol
, groups
);
143 ev
->uloop
.fd
= nl_socket_get_fd(ev
->sock
);
145 if (uloop_fd_add(&ev
->uloop
, ULOOP_READ
|flags
))
152 create_event_socket(struct event_socket
*ev
, int protocol
,
153 int (*cb
)(struct nl_msg
*msg
, void *arg
))
155 if (!create_raw_event_socket(ev
, protocol
, 0, handler_nl_event
, ULOOP_ERROR_CB
))
158 // Install the valid custom callback handler
159 nl_socket_modify_cb(ev
->sock
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, NULL
);
161 // Disable sequence number checking on event sockets
162 nl_socket_disable_seq_check(ev
->sock
);
164 // Increase rx buffer size to 65K on event sockets
166 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
173 system_rtn_aton(const char *src
, unsigned int *dst
)
178 if (!strcmp(src
, "local"))
180 else if (!strcmp(src
, "nat"))
182 else if (!strcmp(src
, "broadcast"))
184 else if (!strcmp(src
, "anycast"))
186 else if (!strcmp(src
, "multicast"))
188 else if (!strcmp(src
, "prohibit"))
190 else if (!strcmp(src
, "unreachable"))
192 else if (!strcmp(src
, "blackhole"))
194 else if (!strcmp(src
, "xresolve"))
196 else if (!strcmp(src
, "unicast"))
198 else if (!strcmp(src
, "throw"))
200 else if (!strcmp(src
, "failed_policy"))
201 n
= RTN_FAILED_POLICY
;
203 n
= strtoul(src
, &e
, 0);
204 if (!e
|| *e
|| e
== src
|| n
> 255)
213 system_tos_aton(const char *src
, unsigned *dst
)
217 *dst
= strtoul(src
, &e
, 16);
218 if (e
== src
|| *e
|| *dst
> 255)
224 int system_init(void)
226 static struct event_socket rtnl_event
;
227 static struct event_socket hotplug_event
;
229 sock_ioctl
= socket(AF_LOCAL
, SOCK_DGRAM
, 0);
230 system_fd_set_cloexec(sock_ioctl
);
232 // Prepare socket for routing / address control
233 sock_rtnl
= create_socket(NETLINK_ROUTE
, 0);
237 if (!create_event_socket(&rtnl_event
, NETLINK_ROUTE
, cb_rtnl_event
))
240 if (!create_raw_event_socket(&hotplug_event
, NETLINK_KOBJECT_UEVENT
, 1,
241 handle_hotplug_event
, 0))
244 // Receive network link events form kernel
245 nl_socket_add_membership(rtnl_event
.sock
, RTNLGRP_LINK
);
250 static void system_set_sysctl(const char *path
, const char *val
)
254 fd
= open(path
, O_WRONLY
);
258 if (write(fd
, val
, strlen(val
))) {}
262 static void system_set_dev_sysctl(const char *path
, const char *device
, const char *val
)
264 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
265 system_set_sysctl(dev_buf
, val
);
268 static void system_set_disable_ipv6(struct device
*dev
, const char *val
)
270 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev
->ifname
, val
);
273 static void system_set_rpfilter(struct device
*dev
, const char *val
)
275 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter", dev
->ifname
, val
);
278 static void system_set_acceptlocal(struct device
*dev
, const char *val
)
280 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local", dev
->ifname
, val
);
283 static void system_set_igmpversion(struct device
*dev
, const char *val
)
285 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version", dev
->ifname
, val
);
288 static void system_set_mldversion(struct device
*dev
, const char *val
)
290 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version", dev
->ifname
, val
);
293 static void system_set_neigh4reachabletime(struct device
*dev
, const char *val
)
295 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
298 static void system_set_neigh6reachabletime(struct device
*dev
, const char *val
)
300 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
303 static int system_get_sysctl(const char *path
, char *buf
, const size_t buf_sz
)
305 int fd
= -1, ret
= -1;
307 fd
= open(path
, O_RDONLY
);
311 ssize_t len
= read(fd
, buf
, buf_sz
- 1);
325 system_get_dev_sysctl(const char *path
, const char *device
, char *buf
, const size_t buf_sz
)
327 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
328 return system_get_sysctl(dev_buf
, buf
, buf_sz
);
331 static int system_get_disable_ipv6(struct device
*dev
, char *buf
, const size_t buf_sz
)
333 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
334 dev
->ifname
, buf
, buf_sz
);
337 static int system_get_rpfilter(struct device
*dev
, char *buf
, const size_t buf_sz
)
339 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
340 dev
->ifname
, buf
, buf_sz
);
343 static int system_get_acceptlocal(struct device
*dev
, char *buf
, const size_t buf_sz
)
345 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
346 dev
->ifname
, buf
, buf_sz
);
349 static int system_get_igmpversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
351 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
352 dev
->ifname
, buf
, buf_sz
);
355 static int system_get_mldversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
357 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
358 dev
->ifname
, buf
, buf_sz
);
361 static int system_get_neigh4reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
363 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
364 dev
->ifname
, buf
, buf_sz
);
367 static int system_get_neigh6reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
369 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
370 dev
->ifname
, buf
, buf_sz
);
373 // Evaluate netlink messages
374 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
376 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
377 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
378 struct nlattr
*nla
[__IFLA_MAX
];
382 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
385 nlmsg_parse(nh
, sizeof(*ifi
), nla
, __IFLA_MAX
- 1, NULL
);
386 if (!nla
[IFLA_IFNAME
])
389 struct device
*dev
= device_get(nla_data(nla
[IFLA_IFNAME
]), false);
390 if (!dev
|| dev
->type
->keep_link_status
)
393 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev
->ifname
, buf
, sizeof(buf
)))
394 link_state
= strtoul(buf
, NULL
, 0);
396 device_set_link(dev
, link_state
? true : false);
403 handle_hotplug_msg(char *data
, int size
)
405 const char *subsystem
= NULL
, *interface
= NULL
;
406 char *cur
, *end
, *sep
;
411 if (!strncmp(data
, "add@", 4))
413 else if (!strncmp(data
, "remove@", 7))
418 skip
= strlen(data
) + 1;
421 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
422 skip
= strlen(cur
) + 1;
424 sep
= strchr(cur
, '=');
429 if (!strcmp(cur
, "INTERFACE"))
431 else if (!strcmp(cur
, "SUBSYSTEM")) {
433 if (strcmp(subsystem
, "net") != 0)
436 if (subsystem
&& interface
)
442 dev
= device_get(interface
, false);
446 if (dev
->type
!= &simple_device_type
)
449 if (add
&& system_if_force_external(dev
->ifname
))
452 device_set_present(dev
, add
);
456 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
458 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
459 struct sockaddr_nl nla
;
460 unsigned char *buf
= NULL
;
463 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
465 handle_hotplug_msg((char *) buf
, size
);
471 static int system_rtnl_call(struct nl_msg
*msg
)
475 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
481 return nl_wait_for_ack(sock_rtnl
);
484 int system_bridge_delbr(struct device
*bridge
)
486 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
489 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
493 memset(&ifr
, 0, sizeof(ifr
));
495 ifr
.ifr_ifindex
= dev
->ifindex
;
498 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
));
499 return ioctl(sock_ioctl
, cmd
, &ifr
);
502 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
506 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
507 if (stat(buf
, &st
) < 0)
513 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
519 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
520 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
524 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
532 path
= strrchr(buf
, '/');
539 static void system_bridge_set_wireless(const char *bridge
, const char *dev
)
541 snprintf(dev_buf
, sizeof(dev_buf
),
542 "/sys/devices/virtual/net/%s/brif/%s/multicast_to_unicast",
544 system_set_sysctl(dev_buf
, "1");
547 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
552 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
553 if (!oldbr
|| strcmp(oldbr
, bridge
->ifname
) != 0)
554 ret
= system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
557 system_bridge_set_wireless(bridge
->ifname
, dev
->ifname
);
562 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
564 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
567 int system_if_resolve(struct device
*dev
)
570 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
571 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
572 return ifr
.ifr_ifindex
;
577 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
581 memset(&ifr
, 0, sizeof(ifr
));
582 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
));
583 ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
);
584 ifr
.ifr_flags
|= add
;
585 ifr
.ifr_flags
&= ~rem
;
586 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
598 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
600 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
602 return ifa
->ifa_index
== ifindex
;
605 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
607 struct rtmsg
*r
= NLMSG_DATA(hdr
);
608 struct nlattr
*tb
[__RTA_MAX
];
610 if (r
->rtm_protocol
== RTPROT_KERNEL
&&
611 r
->rtm_family
== AF_INET6
)
614 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
618 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
621 static bool check_rule(struct nlmsghdr
*hdr
, int ifindex
)
626 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
628 struct clear_data
*clr
= arg
;
629 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
630 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
636 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
643 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
650 if (hdr
->nlmsg_type
!= RTM_NEWRULE
)
659 if (!cb(hdr
, clr
->dev
? clr
->dev
->ifindex
: 0))
662 if (type
== RTM_DELRULE
)
663 D(SYSTEM
, "Remove a rule\n");
665 D(SYSTEM
, "Remove %s from device %s\n",
666 type
== RTM_DELADDR
? "an address" : "a route",
668 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
669 hdr
= nlmsg_hdr(clr
->msg
);
670 hdr
->nlmsg_type
= type
;
671 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
673 nl_socket_disable_auto_ack(sock_rtnl
);
674 nl_send_auto_complete(sock_rtnl
, clr
->msg
);
675 nl_socket_enable_auto_ack(sock_rtnl
);
681 cb_finish_event(struct nl_msg
*msg
, void *arg
)
689 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
692 *pending
= err
->error
;
697 system_if_clear_entries(struct device
*dev
, int type
, int af
)
699 struct clear_data clr
;
700 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
703 .rtm_flags
= RTM_F_CLONED
,
705 int flags
= NLM_F_DUMP
;
714 clr
.size
= sizeof(struct rtgenmsg
);
717 clr
.size
= sizeof(struct rtmsg
);
726 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
730 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
731 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
732 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
733 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
735 nl_send_auto_complete(sock_rtnl
, clr
.msg
);
737 nl_recvmsgs(sock_rtnl
, cb
);
745 * Clear bridge (membership) state and bring down device
747 void system_if_clear_state(struct device
*dev
)
749 static char buf
[256];
752 device_set_ifindex(dev
, system_if_resolve(dev
));
753 if (dev
->external
|| !dev
->ifindex
)
756 system_if_flags(dev
->ifname
, 0, IFF_UP
);
758 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
759 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
760 system_bridge_delbr(dev
);
764 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
766 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
767 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
770 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
771 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
772 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
773 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
774 system_set_disable_ipv6(dev
, "0");
777 static inline unsigned long
778 sec_to_jiffies(int val
)
780 return (unsigned long) val
* 100;
783 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
785 unsigned long args
[4] = {};
787 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
790 args
[0] = BRCTL_SET_BRIDGE_STP_STATE
;
791 args
[1] = !!cfg
->stp
;
792 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
794 args
[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY
;
795 args
[1] = sec_to_jiffies(cfg
->forward_delay
);
796 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
798 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
799 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
801 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
802 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
804 args
[0] = BRCTL_SET_BRIDGE_PRIORITY
;
805 args
[1] = cfg
->priority
;
806 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
808 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
809 args
[0] = BRCTL_SET_AGEING_TIME
;
810 args
[1] = sec_to_jiffies(cfg
->ageing_time
);
811 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
814 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
815 args
[0] = BRCTL_SET_BRIDGE_HELLO_TIME
;
816 args
[1] = sec_to_jiffies(cfg
->hello_time
);
817 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
820 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
821 args
[0] = BRCTL_SET_BRIDGE_MAX_AGE
;
822 args
[1] = sec_to_jiffies(cfg
->max_age
);
823 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
829 int system_macvlan_add(struct device
*macvlan
, struct device
*dev
, struct macvlan_config
*cfg
)
832 struct nlattr
*linkinfo
, *data
;
833 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
835 static const struct {
837 enum macvlan_mode val
;
839 { "private", MACVLAN_MODE_PRIVATE
},
840 { "vepa", MACVLAN_MODE_VEPA
},
841 { "bridge", MACVLAN_MODE_BRIDGE
},
842 { "passthru", MACVLAN_MODE_PASSTHRU
},
845 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
850 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
852 if (cfg
->flags
& MACVLAN_OPT_MACADDR
)
853 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
854 nla_put_string(msg
, IFLA_IFNAME
, macvlan
->ifname
);
855 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
857 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
858 goto nla_put_failure
;
860 nla_put_string(msg
, IFLA_INFO_KIND
, "macvlan");
862 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
863 goto nla_put_failure
;
866 for (i
= 0; i
< ARRAY_SIZE(modes
); i
++) {
867 if (strcmp(cfg
->mode
, modes
[i
].name
) != 0)
870 nla_put_u32(msg
, IFLA_MACVLAN_MODE
, modes
[i
].val
);
875 nla_nest_end(msg
, data
);
876 nla_nest_end(msg
, linkinfo
);
878 rv
= system_rtnl_call(msg
);
880 D(SYSTEM
, "Error adding macvlan '%s' over '%s': %d\n", macvlan
->ifname
, dev
->ifname
, rv
);
889 static int system_link_del(const char *ifname
)
892 struct ifinfomsg iim
= {
893 .ifi_family
= AF_UNSPEC
,
897 msg
= nlmsg_alloc_simple(RTM_DELLINK
, NLM_F_REQUEST
);
902 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
903 nla_put_string(msg
, IFLA_IFNAME
, ifname
);
904 return system_rtnl_call(msg
);
907 int system_macvlan_del(struct device
*macvlan
)
909 return system_link_del(macvlan
->ifname
);
912 static int system_vlan(struct device
*dev
, int id
)
914 struct vlan_ioctl_args ifr
= {
915 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
916 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
919 ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
922 ifr
.cmd
= DEL_VLAN_CMD
;
925 ifr
.cmd
= ADD_VLAN_CMD
;
928 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
929 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
932 int system_vlan_add(struct device
*dev
, int id
)
934 return system_vlan(dev
, id
);
937 int system_vlan_del(struct device
*dev
)
939 return system_vlan(dev
, -1);
942 int system_vlandev_add(struct device
*vlandev
, struct device
*dev
, struct vlandev_config
*cfg
)
945 struct nlattr
*linkinfo
, *data
;
946 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
};
949 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
954 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
955 nla_put_string(msg
, IFLA_IFNAME
, vlandev
->ifname
);
956 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
958 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
959 goto nla_put_failure
;
961 nla_put_string(msg
, IFLA_INFO_KIND
, "vlan");
963 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
964 goto nla_put_failure
;
966 nla_put_u16(msg
, IFLA_VLAN_ID
, cfg
->vid
);
968 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
969 nla_put_u16(msg
, IFLA_VLAN_PROTOCOL
, htons(cfg
->proto
));
971 if(cfg
->proto
== VLAN_PROTO_8021AD
)
972 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
);
975 nla_nest_end(msg
, data
);
976 nla_nest_end(msg
, linkinfo
);
978 rv
= system_rtnl_call(msg
);
980 D(SYSTEM
, "Error adding vlandev '%s' over '%s': %d\n", vlandev
->ifname
, dev
->ifname
, rv
);
989 int system_vlandev_del(struct device
*vlandev
)
991 return system_link_del(vlandev
->ifname
);
995 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
1000 memset(&ifr
, 0, sizeof(ifr
));
1001 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1003 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
1004 s
->mtu
= ifr
.ifr_mtu
;
1005 s
->flags
|= DEV_OPT_MTU
;
1008 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
1009 s
->txqueuelen
= ifr
.ifr_qlen
;
1010 s
->flags
|= DEV_OPT_TXQUEUELEN
;
1013 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
1014 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
1015 s
->flags
|= DEV_OPT_MACADDR
;
1018 if (!system_get_disable_ipv6(dev
, buf
, sizeof(buf
))) {
1019 s
->ipv6
= !strtoul(buf
, NULL
, 0);
1020 s
->flags
|= DEV_OPT_IPV6
;
1023 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) == 0) {
1024 s
->promisc
= ifr
.ifr_flags
& IFF_PROMISC
;
1025 s
->flags
|= DEV_OPT_PROMISC
;
1028 if (!system_get_rpfilter(dev
, buf
, sizeof(buf
))) {
1029 s
->rpfilter
= strtoul(buf
, NULL
, 0);
1030 s
->flags
|= DEV_OPT_RPFILTER
;
1033 if (!system_get_acceptlocal(dev
, buf
, sizeof(buf
))) {
1034 s
->acceptlocal
= strtoul(buf
, NULL
, 0);
1035 s
->flags
|= DEV_OPT_ACCEPTLOCAL
;
1038 if (!system_get_igmpversion(dev
, buf
, sizeof(buf
))) {
1039 s
->igmpversion
= strtoul(buf
, NULL
, 0);
1040 s
->flags
|= DEV_OPT_IGMPVERSION
;
1043 if (!system_get_mldversion(dev
, buf
, sizeof(buf
))) {
1044 s
->mldversion
= strtoul(buf
, NULL
, 0);
1045 s
->flags
|= DEV_OPT_MLDVERSION
;
1048 if (!system_get_neigh4reachabletime(dev
, buf
, sizeof(buf
))) {
1049 s
->neigh4reachabletime
= strtoul(buf
, NULL
, 0);
1050 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1053 if (!system_get_neigh6reachabletime(dev
, buf
, sizeof(buf
))) {
1054 s
->neigh6reachabletime
= strtoul(buf
, NULL
, 0);
1055 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1060 system_if_set_rps_xps_val(const char *path
, int val
)
1066 if (glob(path
, 0, NULL
, &gl
))
1069 snprintf(val_buf
, sizeof(val_buf
), "%x", val
);
1070 for (i
= 0; i
< gl
.gl_pathc
; i
++)
1071 system_set_sysctl(gl
.gl_pathv
[i
], val_buf
);
1075 system_if_apply_rps_xps(struct device
*dev
, struct device_settings
*s
)
1077 long n_cpus
= sysconf(_SC_NPROCESSORS_ONLN
);
1083 val
= (1 << n_cpus
) - 1;
1084 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/rps_cpus", dev
->ifname
);
1085 system_if_set_rps_xps_val(dev_buf
, s
->rps
? val
: 0);
1087 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/xps_cpus", dev
->ifname
);
1088 system_if_set_rps_xps_val(dev_buf
, s
->xps
? val
: 0);
1092 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
, unsigned int apply_mask
)
1096 memset(&ifr
, 0, sizeof(ifr
));
1097 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1098 if (s
->flags
& DEV_OPT_MTU
& apply_mask
) {
1099 ifr
.ifr_mtu
= s
->mtu
;
1100 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
1101 s
->flags
&= ~DEV_OPT_MTU
;
1103 if (s
->flags
& DEV_OPT_TXQUEUELEN
& apply_mask
) {
1104 ifr
.ifr_qlen
= s
->txqueuelen
;
1105 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
1106 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
1108 if ((s
->flags
& DEV_OPT_MACADDR
& apply_mask
) && !dev
->external
) {
1109 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
1110 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
1111 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
1112 s
->flags
&= ~DEV_OPT_MACADDR
;
1114 if (s
->flags
& DEV_OPT_IPV6
& apply_mask
)
1115 system_set_disable_ipv6(dev
, s
->ipv6
? "0" : "1");
1116 if (s
->flags
& DEV_OPT_PROMISC
& apply_mask
) {
1117 if (system_if_flags(dev
->ifname
, s
->promisc
? IFF_PROMISC
: 0,
1118 !s
->promisc
? IFF_PROMISC
: 0) < 0)
1119 s
->flags
&= ~DEV_OPT_PROMISC
;
1121 if (s
->flags
& DEV_OPT_RPFILTER
& apply_mask
) {
1124 snprintf(buf
, sizeof(buf
), "%d", s
->rpfilter
);
1125 system_set_rpfilter(dev
, buf
);
1127 if (s
->flags
& DEV_OPT_ACCEPTLOCAL
& apply_mask
)
1128 system_set_acceptlocal(dev
, s
->acceptlocal
? "1" : "0");
1129 if (s
->flags
& DEV_OPT_IGMPVERSION
& apply_mask
) {
1132 snprintf(buf
, sizeof(buf
), "%d", s
->igmpversion
);
1133 system_set_igmpversion(dev
, buf
);
1135 if (s
->flags
& DEV_OPT_MLDVERSION
& apply_mask
) {
1138 snprintf(buf
, sizeof(buf
), "%d", s
->mldversion
);
1139 system_set_mldversion(dev
, buf
);
1141 if (s
->flags
& DEV_OPT_NEIGHREACHABLETIME
& apply_mask
) {
1144 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4reachabletime
);
1145 system_set_neigh4reachabletime(dev
, buf
);
1146 snprintf(buf
, sizeof(buf
), "%d", s
->neigh6reachabletime
);
1147 system_set_neigh6reachabletime(dev
, buf
);
1150 system_if_apply_rps_xps(dev
, s
);
1153 int system_if_up(struct device
*dev
)
1155 system_if_get_settings(dev
, &dev
->orig_settings
);
1156 /* Only keep orig settings based on what needs to be set */
1157 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
1158 system_if_apply_settings(dev
, &dev
->settings
, dev
->settings
.flags
);
1159 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
1162 int system_if_down(struct device
*dev
)
1164 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
1165 system_if_apply_settings(dev
, &dev
->orig_settings
, dev
->orig_settings
.flags
);
1169 struct if_check_data
{
1175 #ifndef IFF_LOWER_UP
1176 #define IFF_LOWER_UP 0x10000
1179 static int cb_if_check_valid(struct nl_msg
*msg
, void *arg
)
1181 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
1182 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
1183 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1185 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
1188 device_set_present(chk
->dev
, ifi
->ifi_index
> 0 ? true : false);
1189 device_set_link(chk
->dev
, ifi
->ifi_flags
& IFF_LOWER_UP
? true : false);
1194 static int cb_if_check_ack(struct nl_msg
*msg
, void *arg
)
1196 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1201 static int cb_if_check_error(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
1203 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1205 device_set_present(chk
->dev
, false);
1206 device_set_link(chk
->dev
, false);
1207 chk
->pending
= err
->error
;
1212 int system_if_check(struct device
*dev
)
1214 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1216 struct ifinfomsg ifi
= {
1217 .ifi_family
= AF_UNSPEC
,
1220 struct if_check_data chk
= {
1226 msg
= nlmsg_alloc_simple(RTM_GETLINK
, 0);
1227 if (!msg
|| nlmsg_append(msg
, &ifi
, sizeof(ifi
), 0) ||
1228 nla_put_string(msg
, IFLA_IFNAME
, dev
->ifname
))
1231 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_if_check_valid
, &chk
);
1232 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, cb_if_check_ack
, &chk
);
1233 nl_cb_err(cb
, NL_CB_CUSTOM
, cb_if_check_error
, &chk
);
1235 nl_send_auto_complete(sock_rtnl
, msg
);
1236 while (chk
.pending
> 0)
1237 nl_recvmsgs(sock_rtnl
, cb
);
1248 system_if_get_parent(struct device
*dev
)
1250 char buf
[64], *devname
;
1251 int ifindex
, iflink
, len
;
1254 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
1255 f
= fopen(buf
, "r");
1259 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
1266 iflink
= strtoul(buf
, NULL
, 0);
1267 ifindex
= system_if_resolve(dev
);
1268 if (!iflink
|| iflink
== ifindex
)
1271 devname
= if_indextoname(iflink
, buf
);
1275 return device_get(devname
, true);
1279 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
1285 fd
= openat(dir_fd
, file
, O_RDONLY
);
1290 len
= read(fd
, buf
, len
- 1);
1294 } else if (len
> 0) {
1297 c
= strchr(buf
, '\n');
1310 read_uint64_file(int dir_fd
, const char *file
, uint64_t *val
)
1315 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
1317 *val
= strtoull(buf
, NULL
, 0);
1322 /* Assume advertised flags == supported flags */
1323 static const struct {
1326 } ethtool_link_modes
[] = {
1327 { ADVERTISED_10baseT_Half
, "10H" },
1328 { ADVERTISED_10baseT_Full
, "10F" },
1329 { ADVERTISED_100baseT_Half
, "100H" },
1330 { ADVERTISED_100baseT_Full
, "100F" },
1331 { ADVERTISED_1000baseT_Half
, "1000H" },
1332 { ADVERTISED_1000baseT_Full
, "1000F" },
1335 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
1338 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
1339 if (mask
& ethtool_link_modes
[i
].mask
)
1340 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
1345 system_if_force_external(const char *ifname
)
1350 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/phy80211", ifname
);
1351 return stat(buf
, &s
) == 0;
1355 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
1357 struct ethtool_cmd ecmd
;
1363 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s", dev
->ifname
);
1364 dir_fd
= open(buf
, O_DIRECTORY
);
1366 memset(&ecmd
, 0, sizeof(ecmd
));
1367 memset(&ifr
, 0, sizeof(ifr
));
1368 strcpy(ifr
.ifr_name
, dev
->ifname
);
1369 ifr
.ifr_data
= (caddr_t
) &ecmd
;
1370 ecmd
.cmd
= ETHTOOL_GSET
;
1372 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
1373 c
= blobmsg_open_array(b
, "link-advertising");
1374 system_add_link_modes(b
, ecmd
.advertising
);
1375 blobmsg_close_array(b
, c
);
1377 c
= blobmsg_open_array(b
, "link-supported");
1378 system_add_link_modes(b
, ecmd
.supported
);
1379 blobmsg_close_array(b
, c
);
1381 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
1382 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
1383 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
1384 blobmsg_add_string_buffer(b
);
1392 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
1394 const char *const counters
[] = {
1395 "collisions", "rx_frame_errors", "tx_compressed",
1396 "multicast", "rx_length_errors", "tx_dropped",
1397 "rx_bytes", "rx_missed_errors", "tx_errors",
1398 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1399 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1400 "rx_dropped", "tx_aborted_errors", "tx_packets",
1401 "rx_errors", "tx_bytes", "tx_window_errors",
1402 "rx_fifo_errors", "tx_carrier_errors",
1409 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
1410 stats_dir
= open(buf
, O_DIRECTORY
);
1414 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
1415 if (read_uint64_file(stats_dir
, counters
[i
], &val
))
1416 blobmsg_add_u64(b
, counters
[i
], val
);
1422 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
1424 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
1425 int alen
= v4
? 4 : 16;
1426 unsigned int flags
= 0;
1427 struct ifaddrmsg ifa
= {
1428 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1429 .ifa_prefixlen
= addr
->mask
,
1430 .ifa_index
= dev
->ifindex
,
1434 if (cmd
== RTM_NEWADDR
)
1435 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1437 msg
= nlmsg_alloc_simple(cmd
, flags
);
1441 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
1442 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
1444 if (addr
->broadcast
)
1445 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
1446 if (addr
->point_to_point
)
1447 nla_put_u32(msg
, IFA_ADDRESS
, addr
->point_to_point
);
1449 time_t now
= system_get_rtime();
1450 struct ifa_cacheinfo cinfo
= {0xffffffffU
, 0xffffffffU
, 0, 0};
1452 if (addr
->preferred_until
) {
1453 int64_t preferred
= addr
->preferred_until
- now
;
1456 else if (preferred
> UINT32_MAX
)
1457 preferred
= UINT32_MAX
;
1459 cinfo
.ifa_prefered
= preferred
;
1462 if (addr
->valid_until
) {
1463 int64_t valid
= addr
->valid_until
- now
;
1466 else if (valid
> UINT32_MAX
)
1469 cinfo
.ifa_valid
= valid
;
1472 nla_put(msg
, IFA_CACHEINFO
, sizeof(cinfo
), &cinfo
);
1475 return system_rtnl_call(msg
);
1478 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
1480 return system_addr(dev
, addr
, RTM_NEWADDR
);
1483 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
1485 return system_addr(dev
, addr
, RTM_DELADDR
);
1488 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
1490 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
1492 unsigned int flags
= 0;
1495 have_gw
= !!route
->nexthop
.in
.s_addr
;
1497 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
1498 route
->nexthop
.in6
.s6_addr32
[1] ||
1499 route
->nexthop
.in6
.s6_addr32
[2] ||
1500 route
->nexthop
.in6
.s6_addr32
[3];
1502 unsigned int table
= (route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))
1503 ? route
->table
: RT_TABLE_MAIN
;
1505 struct rtmsg rtm
= {
1506 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1507 .rtm_dst_len
= route
->mask
,
1508 .rtm_src_len
= route
->sourcemask
,
1509 .rtm_table
= (table
< 256) ? table
: RT_TABLE_UNSPEC
,
1510 .rtm_protocol
= (route
->flags
& DEVADDR_KERNEL
) ? RTPROT_KERNEL
: RTPROT_STATIC
,
1511 .rtm_scope
= RT_SCOPE_NOWHERE
,
1512 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
1513 .rtm_flags
= (route
->flags
& DEVROUTE_ONLINK
) ? RTNH_F_ONLINK
: 0,
1517 if (cmd
== RTM_NEWROUTE
) {
1518 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1520 if (!dev
) { // Add null-route
1521 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1522 rtm
.rtm_type
= RTN_UNREACHABLE
;
1525 rtm
.rtm_scope
= (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
1528 if (route
->flags
& DEVROUTE_TYPE
) {
1529 rtm
.rtm_type
= route
->type
;
1530 if (!(route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))) {
1531 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_BROADCAST
||
1532 rtm
.rtm_type
== RTN_NAT
|| rtm
.rtm_type
== RTN_ANYCAST
)
1533 rtm
.rtm_table
= RT_TABLE_LOCAL
;
1536 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_NAT
) {
1537 rtm
.rtm_scope
= RT_SCOPE_HOST
;
1538 } else if (rtm
.rtm_type
== RTN_BROADCAST
|| rtm
.rtm_type
== RTN_MULTICAST
||
1539 rtm
.rtm_type
== RTN_ANYCAST
) {
1540 rtm
.rtm_scope
= RT_SCOPE_LINK
;
1541 } else if (rtm
.rtm_type
== RTN_BLACKHOLE
|| rtm
.rtm_type
== RTN_UNREACHABLE
||
1542 rtm
.rtm_type
== RTN_PROHIBIT
|| rtm
.rtm_type
== RTN_FAILED_POLICY
) {
1543 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1548 msg
= nlmsg_alloc_simple(cmd
, flags
);
1552 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
1555 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
1557 if (route
->sourcemask
) {
1558 if (rtm
.rtm_family
== AF_INET
)
1559 nla_put(msg
, RTA_PREFSRC
, alen
, &route
->source
);
1561 nla_put(msg
, RTA_SRC
, alen
, &route
->source
);
1564 if (route
->metric
> 0)
1565 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
1568 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
1571 nla_put_u32(msg
, RTA_OIF
, dev
->ifindex
);
1574 nla_put_u32(msg
, RTA_TABLE
, table
);
1576 if (route
->flags
& DEVROUTE_MTU
) {
1577 struct nlattr
*metrics
;
1579 if (!(metrics
= nla_nest_start(msg
, RTA_METRICS
)))
1580 goto nla_put_failure
;
1582 nla_put_u32(msg
, RTAX_MTU
, route
->mtu
);
1584 nla_nest_end(msg
, metrics
);
1587 return system_rtnl_call(msg
);
1594 int system_add_route(struct device
*dev
, struct device_route
*route
)
1596 return system_rt(dev
, route
, RTM_NEWROUTE
);
1599 int system_del_route(struct device
*dev
, struct device_route
*route
)
1601 return system_rt(dev
, route
, RTM_DELROUTE
);
1604 int system_flush_routes(void)
1606 const char *names
[] = {
1607 "/proc/sys/net/ipv4/route/flush",
1608 "/proc/sys/net/ipv6/route/flush"
1612 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
1613 fd
= open(names
[i
], O_WRONLY
);
1617 if (write(fd
, "-1", 2)) {}
1623 bool system_resolve_rt_type(const char *type
, unsigned int *id
)
1625 return system_rtn_aton(type
, id
);
1628 bool system_resolve_rt_table(const char *name
, unsigned int *id
)
1632 unsigned int n
, table
= RT_TABLE_UNSPEC
;
1634 /* first try to parse table as number */
1635 if ((n
= strtoul(name
, &e
, 0)) > 0 && !*e
)
1638 /* handle well known aliases */
1639 else if (!strcmp(name
, "default"))
1640 table
= RT_TABLE_DEFAULT
;
1641 else if (!strcmp(name
, "main"))
1642 table
= RT_TABLE_MAIN
;
1643 else if (!strcmp(name
, "local"))
1644 table
= RT_TABLE_LOCAL
;
1645 else if (!strcmp(name
, "prelocal"))
1646 table
= RT_TABLE_PRELOCAL
;
1648 /* try to look up name in /etc/iproute2/rt_tables */
1649 else if ((f
= fopen("/etc/iproute2/rt_tables", "r")) != NULL
)
1651 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
)
1653 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
1656 n
= strtoul(e
, NULL
, 10);
1657 e
= strtok(NULL
, " \t\n");
1659 if (e
&& !strcmp(e
, name
))
1669 if (table
== RT_TABLE_UNSPEC
)
1676 bool system_is_default_rt_table(unsigned int id
)
1678 return (id
== RT_TABLE_MAIN
);
1681 bool system_resolve_rpfilter(const char *filter
, unsigned int *id
)
1686 if (!strcmp(filter
, "strict"))
1688 else if (!strcmp(filter
, "loose"))
1691 n
= strtoul(filter
, &e
, 0);
1692 if (*e
|| e
== filter
|| n
> 2)
1700 static int system_iprule(struct iprule
*rule
, int cmd
)
1702 int alen
= ((rule
->flags
& IPRULE_FAMILY
) == IPRULE_INET4
) ? 4 : 16;
1705 struct rtmsg rtm
= {
1706 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1707 .rtm_protocol
= RTPROT_STATIC
,
1708 .rtm_scope
= RT_SCOPE_UNIVERSE
,
1709 .rtm_table
= RT_TABLE_UNSPEC
,
1710 .rtm_type
= RTN_UNSPEC
,
1714 if (cmd
== RTM_NEWRULE
) {
1715 rtm
.rtm_type
= RTN_UNICAST
;
1716 rtm
.rtm_flags
|= NLM_F_REPLACE
| NLM_F_EXCL
;
1720 rtm
.rtm_flags
|= FIB_RULE_INVERT
;
1722 if (rule
->flags
& IPRULE_SRC
)
1723 rtm
.rtm_src_len
= rule
->src_mask
;
1725 if (rule
->flags
& IPRULE_DEST
)
1726 rtm
.rtm_dst_len
= rule
->dest_mask
;
1728 if (rule
->flags
& IPRULE_TOS
)
1729 rtm
.rtm_tos
= rule
->tos
;
1731 if (rule
->flags
& IPRULE_LOOKUP
) {
1732 if (rule
->lookup
< 256)
1733 rtm
.rtm_table
= rule
->lookup
;
1736 if (rule
->flags
& IPRULE_ACTION
)
1737 rtm
.rtm_type
= rule
->action
;
1738 else if (rule
->flags
& IPRULE_GOTO
)
1739 rtm
.rtm_type
= FR_ACT_GOTO
;
1740 else if (!(rule
->flags
& (IPRULE_LOOKUP
| IPRULE_ACTION
| IPRULE_GOTO
)))
1741 rtm
.rtm_type
= FR_ACT_NOP
;
1743 msg
= nlmsg_alloc_simple(cmd
, NLM_F_REQUEST
);
1748 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
1750 if (rule
->flags
& IPRULE_IN
)
1751 nla_put(msg
, FRA_IFNAME
, strlen(rule
->in_dev
) + 1, rule
->in_dev
);
1753 if (rule
->flags
& IPRULE_OUT
)
1754 nla_put(msg
, FRA_OIFNAME
, strlen(rule
->out_dev
) + 1, rule
->out_dev
);
1756 if (rule
->flags
& IPRULE_SRC
)
1757 nla_put(msg
, FRA_SRC
, alen
, &rule
->src_addr
);
1759 if (rule
->flags
& IPRULE_DEST
)
1760 nla_put(msg
, FRA_DST
, alen
, &rule
->dest_addr
);
1762 if (rule
->flags
& IPRULE_PRIORITY
)
1763 nla_put_u32(msg
, FRA_PRIORITY
, rule
->priority
);
1764 else if (cmd
== RTM_NEWRULE
)
1765 nla_put_u32(msg
, FRA_PRIORITY
, rule
->order
);
1767 if (rule
->flags
& IPRULE_FWMARK
)
1768 nla_put_u32(msg
, FRA_FWMARK
, rule
->fwmark
);
1770 if (rule
->flags
& IPRULE_FWMASK
)
1771 nla_put_u32(msg
, FRA_FWMASK
, rule
->fwmask
);
1773 if (rule
->flags
& IPRULE_LOOKUP
) {
1774 if (rule
->lookup
>= 256)
1775 nla_put_u32(msg
, FRA_TABLE
, rule
->lookup
);
1778 if (rule
->flags
& IPRULE_GOTO
)
1779 nla_put_u32(msg
, FRA_GOTO
, rule
->gotoid
);
1781 return system_rtnl_call(msg
);
1784 int system_add_iprule(struct iprule
*rule
)
1786 return system_iprule(rule
, RTM_NEWRULE
);
1789 int system_del_iprule(struct iprule
*rule
)
1791 return system_iprule(rule
, RTM_DELRULE
);
1794 int system_flush_iprules(void)
1799 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET
);
1800 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET6
);
1802 memset(&rule
, 0, sizeof(rule
));
1805 rule
.flags
= IPRULE_INET4
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
1808 rule
.lookup
= RT_TABLE_PRELOCAL
;
1809 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1812 rule
.lookup
= RT_TABLE_LOCAL
;
1813 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1815 rule
.priority
= 32766;
1816 rule
.lookup
= RT_TABLE_MAIN
;
1817 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1819 rule
.priority
= 32767;
1820 rule
.lookup
= RT_TABLE_DEFAULT
;
1821 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1824 rule
.flags
= IPRULE_INET6
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
1827 rule
.lookup
= RT_TABLE_PRELOCAL
;
1828 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1831 rule
.lookup
= RT_TABLE_LOCAL
;
1832 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1834 rule
.priority
= 32766;
1835 rule
.lookup
= RT_TABLE_MAIN
;
1836 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1841 bool system_resolve_iprule_action(const char *action
, unsigned int *id
)
1843 return system_rtn_aton(action
, id
);
1846 time_t system_get_rtime(void)
1851 if (syscall(__NR_clock_gettime
, CLOCK_MONOTONIC
, &ts
) == 0)
1854 if (gettimeofday(&tv
, NULL
) == 0)
1861 #define IP_DF 0x4000
1864 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
1868 memset(&ifr
, 0, sizeof(ifr
));
1869 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
));
1870 ifr
.ifr_ifru
.ifru_data
= p
;
1871 return ioctl(sock_ioctl
, cmd
, &ifr
);
1874 #ifdef IFLA_IPTUN_MAX
1875 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
1876 static int system_add_gre_tunnel(const char *name
, const char *kind
,
1877 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
1880 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
1881 struct blob_attr
*cur
;
1882 uint32_t ikey
= 0, okey
= 0, flags
= 0, flowinfo
= 0;
1883 uint16_t iflags
= 0, oflags
= 0;
1885 int ret
= 0, ttl
= 64;
1887 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
1891 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
1892 nla_put_string(nlm
, IFLA_IFNAME
, name
);
1894 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
1900 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
1901 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
1908 nla_put_u32(nlm
, IFLA_GRE_LINK
, link
);
1910 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
1911 ttl
= blobmsg_get_u32(cur
);
1913 nla_put_u8(nlm
, IFLA_GRE_TTL
, ttl
);
1915 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
1916 char *str
= blobmsg_get_string(cur
);
1917 if (strcmp(str
, "inherit")) {
1920 if (!system_tos_aton(str
, &uval
)) {
1926 flowinfo
|= htonl(uval
<< 20) & IP6_FLOWINFO_TCLASS
;
1931 flags
|= IP6_TNL_F_USE_ORIG_TCLASS
;
1937 if ((cur
= tb
[TUNNEL_ATTR_INFO
]) && (blobmsg_type(cur
) == BLOBMSG_TYPE_STRING
)) {
1938 uint8_t icsum
, ocsum
, iseqno
, oseqno
;
1939 if (sscanf(blobmsg_get_string(cur
), "%u,%u,%hhu,%hhu,%hhu,%hhu",
1940 &ikey
, &okey
, &icsum
, &ocsum
, &iseqno
, &oseqno
) < 6) {
1965 struct in6_addr in6buf
;
1966 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
1967 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
1971 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(in6buf
), &in6buf
);
1974 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
1975 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
1979 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(in6buf
), &in6buf
);
1981 nla_put_u8(nlm
, IFLA_GRE_ENCAP_LIMIT
, 4);
1984 nla_put_u32(nlm
, IFLA_GRE_FLOWINFO
, flowinfo
);
1987 nla_put_u32(nlm
, IFLA_GRE_FLAGS
, flags
);
1989 struct in_addr inbuf
;
1992 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
1993 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
1997 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(inbuf
), &inbuf
);
2000 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2001 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2005 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(inbuf
), &inbuf
);
2007 if (IN_MULTICAST(ntohl(inbuf
.s_addr
))) {
2009 okey
= inbuf
.s_addr
;
2014 ikey
= inbuf
.s_addr
;
2020 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2021 set_df
= blobmsg_get_bool(cur
);
2023 /* ttl !=0 and nopmtudisc are incompatible */
2024 if (ttl
&& !set_df
) {
2029 nla_put_u8(nlm
, IFLA_GRE_PMTUDISC
, set_df
? 1 : 0);
2031 nla_put_u8(nlm
, IFLA_GRE_TOS
, tos
);
2035 nla_put_u16(nlm
, IFLA_GRE_OFLAGS
, oflags
);
2038 nla_put_u16(nlm
, IFLA_GRE_IFLAGS
, iflags
);
2041 nla_put_u32(nlm
, IFLA_GRE_OKEY
, okey
);
2044 nla_put_u32(nlm
, IFLA_GRE_IKEY
, ikey
);
2046 nla_nest_end(nlm
, infodata
);
2047 nla_nest_end(nlm
, linkinfo
);
2049 return system_rtnl_call(nlm
);
2057 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
, const unsigned int link
, struct blob_attr
**tb
)
2059 struct blob_attr
*cur
;
2061 struct ip_tunnel_parm p
= {
2070 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
]) &&
2071 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.saddr
) < 1)
2074 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
]) &&
2075 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.daddr
) < 1)
2078 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2079 set_df
= blobmsg_get_bool(cur
);
2081 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2082 p
.iph
.ttl
= blobmsg_get_u32(cur
);
2084 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2085 char *str
= blobmsg_get_string(cur
);
2086 if (strcmp(str
, "inherit")) {
2089 if (!system_tos_aton(str
, &uval
))
2097 p
.iph
.frag_off
= set_df
? htons(IP_DF
) : 0;
2098 /* ttl !=0 and nopmtudisc are incompatible */
2099 if (p
.iph
.ttl
&& p
.iph
.frag_off
== 0)
2102 strncpy(p
.name
, name
, sizeof(p
.name
));
2104 switch (p
.iph
.protocol
) {
2106 return tunnel_ioctl("tunl0", SIOCADDTUNNEL
, &p
);
2108 return tunnel_ioctl("sit0", SIOCADDTUNNEL
, &p
);
2115 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
)
2117 struct blob_attr
*cur
;
2120 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2122 str
= blobmsg_data(cur
);
2124 if (!strcmp(str
, "greip") || !strcmp(str
, "gretapip") ||
2125 !strcmp(str
, "greip6") || !strcmp(str
, "gretapip6"))
2126 return system_link_del(name
);
2128 return tunnel_ioctl(name
, SIOCDELTUNNEL
, NULL
);
2131 int system_del_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2133 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2135 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2136 blob_data(attr
), blob_len(attr
));
2138 return __system_del_ip_tunnel(name
, tb
);
2141 int system_update_ipv6_mtu(struct device
*dev
, int mtu
)
2145 snprintf(buf
, sizeof(buf
), "/proc/sys/net/ipv6/conf/%s/mtu",
2148 int fd
= open(buf
, O_RDWR
);
2149 ssize_t len
= read(fd
, buf
, sizeof(buf
) - 1);
2156 if (!mtu
|| ret
<= mtu
)
2159 lseek(fd
, 0, SEEK_SET
);
2160 if (write(fd
, buf
, snprintf(buf
, sizeof(buf
), "%i", mtu
)) <= 0)
2168 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2170 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2171 struct blob_attr
*cur
;
2174 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2175 blob_data(attr
), blob_len(attr
));
2177 __system_del_ip_tunnel(name
, tb
);
2179 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2181 str
= blobmsg_data(cur
);
2183 unsigned int ttl
= 0;
2184 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
2185 ttl
= blobmsg_get_u32(cur
);
2190 unsigned int link
= 0;
2191 if ((cur
= tb
[TUNNEL_ATTR_LINK
])) {
2192 struct interface
*iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
2196 if (iface
->l3_dev
.dev
)
2197 link
= iface
->l3_dev
.dev
->ifindex
;
2200 if (!strcmp(str
, "sit")) {
2201 if (system_add_proto_tunnel(name
, IPPROTO_IPV6
, link
, tb
) < 0)
2205 if ((cur
= tb
[TUNNEL_ATTR_6RD_PREFIX
])) {
2207 struct ip_tunnel_6rd p6
;
2209 memset(&p6
, 0, sizeof(p6
));
2211 if (!parse_ip_and_netmask(AF_INET6
, blobmsg_data(cur
),
2212 &p6
.prefix
, &mask
) || mask
> 128)
2214 p6
.prefixlen
= mask
;
2216 if ((cur
= tb
[TUNNEL_ATTR_6RD_RELAY_PREFIX
])) {
2217 if (!parse_ip_and_netmask(AF_INET
, blobmsg_data(cur
),
2218 &p6
.relay_prefix
, &mask
) || mask
> 32)
2220 p6
.relay_prefixlen
= mask
;
2223 if (tunnel_ioctl(name
, SIOCADD6RD
, &p6
) < 0) {
2224 __system_del_ip_tunnel(name
, tb
);
2229 #ifdef IFLA_IPTUN_MAX
2230 } else if (!strcmp(str
, "ipip6")) {
2231 struct nl_msg
*nlm
= nlmsg_alloc_simple(RTM_NEWLINK
,
2232 NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2233 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
};
2239 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2240 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2243 nla_put_u32(nlm
, IFLA_LINK
, link
);
2245 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2250 nla_put_string(nlm
, IFLA_INFO_KIND
, "ip6tnl");
2251 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2258 nla_put_u32(nlm
, IFLA_IPTUN_LINK
, link
);
2260 nla_put_u8(nlm
, IFLA_IPTUN_PROTO
, IPPROTO_IPIP
);
2261 nla_put_u8(nlm
, IFLA_IPTUN_TTL
, (ttl
) ? ttl
: 64);
2262 nla_put_u8(nlm
, IFLA_IPTUN_ENCAP_LIMIT
, 4);
2264 struct in6_addr in6buf
;
2265 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2266 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2270 nla_put(nlm
, IFLA_IPTUN_LOCAL
, sizeof(in6buf
), &in6buf
);
2273 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2274 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2278 nla_put(nlm
, IFLA_IPTUN_REMOTE
, sizeof(in6buf
), &in6buf
);
2281 #ifdef IFLA_IPTUN_FMR_MAX
2282 if ((cur
= tb
[TUNNEL_ATTR_FMRS
])) {
2283 struct nlattr
*fmrs
= nla_nest_start(nlm
, IFLA_IPTUN_FMRS
);
2285 struct blob_attr
*fmr
;
2286 unsigned rem
, fmrcnt
= 0;
2287 blobmsg_for_each_attr(fmr
, cur
, rem
) {
2288 if (blobmsg_type(fmr
) != BLOBMSG_TYPE_STRING
)
2291 unsigned ip4len
, ip6len
, ealen
, offset
= 6;
2295 if (sscanf(blobmsg_get_string(fmr
), "%47[^/]/%u,%15[^/]/%u,%u,%u",
2296 ip6buf
, &ip6len
, ip4buf
, &ip4len
, &ealen
, &offset
) < 5) {
2301 struct in6_addr ip6prefix
;
2302 struct in_addr ip4prefix
;
2303 if (inet_pton(AF_INET6
, ip6buf
, &ip6prefix
) != 1 ||
2304 inet_pton(AF_INET
, ip4buf
, &ip4prefix
) != 1) {
2309 struct nlattr
*rule
= nla_nest_start(nlm
, ++fmrcnt
);
2311 nla_put(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX
, sizeof(ip6prefix
), &ip6prefix
);
2312 nla_put(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX
, sizeof(ip4prefix
), &ip4prefix
);
2313 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX_LEN
, ip6len
);
2314 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX_LEN
, ip4len
);
2315 nla_put_u8(nlm
, IFLA_IPTUN_FMR_EA_LEN
, ealen
);
2316 nla_put_u8(nlm
, IFLA_IPTUN_FMR_OFFSET
, offset
);
2318 nla_nest_end(nlm
, rule
);
2321 nla_nest_end(nlm
, fmrs
);
2325 nla_nest_end(nlm
, infodata
);
2326 nla_nest_end(nlm
, linkinfo
);
2328 return system_rtnl_call(nlm
);
2332 } else if (!strcmp(str
, "greip")) {
2333 return system_add_gre_tunnel(name
, "gre", link
, tb
, false);
2334 } else if (!strcmp(str
, "gretapip")) {
2335 return system_add_gre_tunnel(name
, "gretap", link
, tb
, false);
2336 } else if (!strcmp(str
, "greip6")) {
2337 return system_add_gre_tunnel(name
, "ip6gre", link
, tb
, true);
2338 } else if (!strcmp(str
, "gretapip6")) {
2339 return system_add_gre_tunnel(name
, "ip6gretap", link
, tb
, true);
2341 } else if (!strcmp(str
, "ipip")) {
2342 return system_add_proto_tunnel(name
, IPPROTO_IPIP
, link
, tb
);