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
50 #ifndef IFA_F_NOPREFIXROUTE
51 #define IFA_F_NOPREFIXROUTE 0x200
60 #include <netlink/msg.h>
61 #include <netlink/attr.h>
62 #include <netlink/socket.h>
63 #include <libubox/uloop.h>
70 struct uloop_fd uloop
;
75 static int sock_ioctl
= -1;
76 static struct nl_sock
*sock_rtnl
= NULL
;
78 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
);
79 static void handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
);
81 static char dev_buf
[256];
84 handler_nl_event(struct uloop_fd
*u
, unsigned int events
)
86 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
88 socklen_t errlen
= sizeof(err
);
91 nl_recvmsgs_default(ev
->sock
);
95 if (getsockopt(u
->fd
, SOL_SOCKET
, SO_ERROR
, (void *)&err
, &errlen
))
100 // Increase rx buffer size on netlink socket
102 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
105 // Request full dump since some info got dropped
106 struct rtgenmsg msg
= { .rtgen_family
= AF_UNSPEC
};
107 nl_send_simple(ev
->sock
, RTM_GETLINK
, NLM_F_DUMP
, &msg
, sizeof(msg
));
117 uloop_fd_delete(&ev
->uloop
);
121 static struct nl_sock
*
122 create_socket(int protocol
, int groups
)
124 struct nl_sock
*sock
;
126 sock
= nl_socket_alloc();
131 nl_join_groups(sock
, groups
);
133 if (nl_connect(sock
, protocol
))
140 create_raw_event_socket(struct event_socket
*ev
, int protocol
, int groups
,
141 uloop_fd_handler cb
, int flags
)
143 ev
->sock
= create_socket(protocol
, groups
);
147 ev
->uloop
.fd
= nl_socket_get_fd(ev
->sock
);
149 if (uloop_fd_add(&ev
->uloop
, ULOOP_READ
|flags
))
156 create_event_socket(struct event_socket
*ev
, int protocol
,
157 int (*cb
)(struct nl_msg
*msg
, void *arg
))
159 if (!create_raw_event_socket(ev
, protocol
, 0, handler_nl_event
, ULOOP_ERROR_CB
))
162 // Install the valid custom callback handler
163 nl_socket_modify_cb(ev
->sock
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, NULL
);
165 // Disable sequence number checking on event sockets
166 nl_socket_disable_seq_check(ev
->sock
);
168 // Increase rx buffer size to 65K on event sockets
170 if (nl_socket_set_buffer_size(ev
->sock
, ev
->bufsize
, 0))
177 system_rtn_aton(const char *src
, unsigned int *dst
)
182 if (!strcmp(src
, "local"))
184 else if (!strcmp(src
, "nat"))
186 else if (!strcmp(src
, "broadcast"))
188 else if (!strcmp(src
, "anycast"))
190 else if (!strcmp(src
, "multicast"))
192 else if (!strcmp(src
, "prohibit"))
194 else if (!strcmp(src
, "unreachable"))
196 else if (!strcmp(src
, "blackhole"))
198 else if (!strcmp(src
, "xresolve"))
200 else if (!strcmp(src
, "unicast"))
202 else if (!strcmp(src
, "throw"))
204 else if (!strcmp(src
, "failed_policy"))
205 n
= RTN_FAILED_POLICY
;
207 n
= strtoul(src
, &e
, 0);
208 if (!e
|| *e
|| e
== src
|| n
> 255)
217 system_tos_aton(const char *src
, unsigned *dst
)
221 *dst
= strtoul(src
, &e
, 16);
222 if (e
== src
|| *e
|| *dst
> 255)
228 int system_init(void)
230 static struct event_socket rtnl_event
;
231 static struct event_socket hotplug_event
;
233 sock_ioctl
= socket(AF_LOCAL
, SOCK_DGRAM
, 0);
234 system_fd_set_cloexec(sock_ioctl
);
236 // Prepare socket for routing / address control
237 sock_rtnl
= create_socket(NETLINK_ROUTE
, 0);
241 if (!create_event_socket(&rtnl_event
, NETLINK_ROUTE
, cb_rtnl_event
))
244 if (!create_raw_event_socket(&hotplug_event
, NETLINK_KOBJECT_UEVENT
, 1,
245 handle_hotplug_event
, 0))
248 // Receive network link events form kernel
249 nl_socket_add_membership(rtnl_event
.sock
, RTNLGRP_LINK
);
254 static void system_set_sysctl(const char *path
, const char *val
)
258 fd
= open(path
, O_WRONLY
);
262 if (write(fd
, val
, strlen(val
))) {}
266 static void system_set_dev_sysctl(const char *path
, const char *device
, const char *val
)
268 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
269 system_set_sysctl(dev_buf
, val
);
272 static void system_set_disable_ipv6(struct device
*dev
, const char *val
)
274 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev
->ifname
, val
);
277 static void system_set_rpfilter(struct device
*dev
, const char *val
)
279 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter", dev
->ifname
, val
);
282 static void system_set_acceptlocal(struct device
*dev
, const char *val
)
284 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local", dev
->ifname
, val
);
287 static void system_set_igmpversion(struct device
*dev
, const char *val
)
289 system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version", dev
->ifname
, val
);
292 static void system_set_mldversion(struct device
*dev
, const char *val
)
294 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version", dev
->ifname
, val
);
297 static void system_set_neigh4reachabletime(struct device
*dev
, const char *val
)
299 system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
302 static void system_set_neigh6reachabletime(struct device
*dev
, const char *val
)
304 system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms", dev
->ifname
, val
);
307 static int system_get_sysctl(const char *path
, char *buf
, const size_t buf_sz
)
309 int fd
= -1, ret
= -1;
311 fd
= open(path
, O_RDONLY
);
315 ssize_t len
= read(fd
, buf
, buf_sz
- 1);
329 system_get_dev_sysctl(const char *path
, const char *device
, char *buf
, const size_t buf_sz
)
331 snprintf(dev_buf
, sizeof(dev_buf
), path
, device
);
332 return system_get_sysctl(dev_buf
, buf
, buf_sz
);
335 static int system_get_disable_ipv6(struct device
*dev
, char *buf
, const size_t buf_sz
)
337 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6",
338 dev
->ifname
, buf
, buf_sz
);
341 static int system_get_rpfilter(struct device
*dev
, char *buf
, const size_t buf_sz
)
343 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
344 dev
->ifname
, buf
, buf_sz
);
347 static int system_get_acceptlocal(struct device
*dev
, char *buf
, const size_t buf_sz
)
349 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
350 dev
->ifname
, buf
, buf_sz
);
353 static int system_get_igmpversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
355 return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
356 dev
->ifname
, buf
, buf_sz
);
359 static int system_get_mldversion(struct device
*dev
, char *buf
, const size_t buf_sz
)
361 return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
362 dev
->ifname
, buf
, buf_sz
);
365 static int system_get_neigh4reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
367 return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
368 dev
->ifname
, buf
, buf_sz
);
371 static int system_get_neigh6reachabletime(struct device
*dev
, char *buf
, const size_t buf_sz
)
373 return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
374 dev
->ifname
, buf
, buf_sz
);
377 // Evaluate netlink messages
378 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
380 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
381 struct nlattr
*nla
[__IFLA_MAX
];
385 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
388 nlmsg_parse(nh
, sizeof(struct ifinfomsg
), nla
, __IFLA_MAX
- 1, NULL
);
389 if (!nla
[IFLA_IFNAME
])
392 struct device
*dev
= device_get(nla_data(nla
[IFLA_IFNAME
]), false);
393 if (!dev
|| dev
->type
->keep_link_status
)
396 if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev
->ifname
, buf
, sizeof(buf
)))
397 link_state
= strtoul(buf
, NULL
, 0);
399 device_set_link(dev
, link_state
? true : false);
406 handle_hotplug_msg(char *data
, int size
)
408 const char *subsystem
= NULL
, *interface
= NULL
;
409 char *cur
, *end
, *sep
;
414 if (!strncmp(data
, "add@", 4))
416 else if (!strncmp(data
, "remove@", 7))
421 skip
= strlen(data
) + 1;
424 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
425 skip
= strlen(cur
) + 1;
427 sep
= strchr(cur
, '=');
432 if (!strcmp(cur
, "INTERFACE"))
434 else if (!strcmp(cur
, "SUBSYSTEM")) {
436 if (strcmp(subsystem
, "net") != 0)
439 if (subsystem
&& interface
)
445 dev
= device_get(interface
, false);
449 if (dev
->type
!= &simple_device_type
)
452 if (add
&& system_if_force_external(dev
->ifname
))
455 device_set_present(dev
, add
);
459 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
461 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
462 struct sockaddr_nl nla
;
463 unsigned char *buf
= NULL
;
466 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
468 handle_hotplug_msg((char *) buf
, size
);
474 static int system_rtnl_call(struct nl_msg
*msg
)
478 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
484 return nl_wait_for_ack(sock_rtnl
);
487 int system_bridge_delbr(struct device
*bridge
)
489 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
492 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
496 memset(&ifr
, 0, sizeof(ifr
));
498 ifr
.ifr_ifindex
= dev
->ifindex
;
501 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
));
502 return ioctl(sock_ioctl
, cmd
, &ifr
);
505 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
509 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
510 if (stat(buf
, &st
) < 0)
516 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
522 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
523 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
527 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
535 path
= strrchr(buf
, '/');
542 static void system_bridge_set_wireless(const char *bridge
, const char *dev
)
544 snprintf(dev_buf
, sizeof(dev_buf
),
545 "/sys/devices/virtual/net/%s/brif/%s/multicast_to_unicast",
547 system_set_sysctl(dev_buf
, "1");
550 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
555 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
556 if (!oldbr
|| strcmp(oldbr
, bridge
->ifname
) != 0)
557 ret
= system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
560 system_bridge_set_wireless(bridge
->ifname
, dev
->ifname
);
565 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
567 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
570 int system_if_resolve(struct device
*dev
)
573 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
574 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
575 return ifr
.ifr_ifindex
;
580 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
584 memset(&ifr
, 0, sizeof(ifr
));
585 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
));
586 ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
);
587 ifr
.ifr_flags
|= add
;
588 ifr
.ifr_flags
&= ~rem
;
589 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
601 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
603 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
605 return ifa
->ifa_index
== ifindex
;
608 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
610 struct rtmsg
*r
= NLMSG_DATA(hdr
);
611 struct nlattr
*tb
[__RTA_MAX
];
613 if (r
->rtm_protocol
== RTPROT_KERNEL
&&
614 r
->rtm_family
== AF_INET6
)
617 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
621 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
624 static bool check_rule(struct nlmsghdr
*hdr
, int ifindex
)
629 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
631 struct clear_data
*clr
= arg
;
632 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
633 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
639 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
646 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
653 if (hdr
->nlmsg_type
!= RTM_NEWRULE
)
662 if (!cb(hdr
, clr
->dev
? clr
->dev
->ifindex
: 0))
665 if (type
== RTM_DELRULE
)
666 D(SYSTEM
, "Remove a rule\n");
668 D(SYSTEM
, "Remove %s from device %s\n",
669 type
== RTM_DELADDR
? "an address" : "a route",
671 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
672 hdr
= nlmsg_hdr(clr
->msg
);
673 hdr
->nlmsg_type
= type
;
674 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
676 nl_socket_disable_auto_ack(sock_rtnl
);
677 nl_send_auto_complete(sock_rtnl
, clr
->msg
);
678 nl_socket_enable_auto_ack(sock_rtnl
);
684 cb_finish_event(struct nl_msg
*msg
, void *arg
)
692 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
695 *pending
= err
->error
;
700 system_if_clear_entries(struct device
*dev
, int type
, int af
)
702 struct clear_data clr
;
703 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
706 .rtm_flags
= RTM_F_CLONED
,
708 int flags
= NLM_F_DUMP
;
717 clr
.size
= sizeof(struct rtgenmsg
);
720 clr
.size
= sizeof(struct rtmsg
);
729 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
733 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
734 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
735 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
736 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
738 nl_send_auto_complete(sock_rtnl
, clr
.msg
);
740 nl_recvmsgs(sock_rtnl
, cb
);
748 * Clear bridge (membership) state and bring down device
750 void system_if_clear_state(struct device
*dev
)
752 static char buf
[256];
755 device_set_ifindex(dev
, system_if_resolve(dev
));
756 if (dev
->external
|| !dev
->ifindex
)
759 system_if_flags(dev
->ifname
, 0, IFF_UP
);
761 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
762 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
763 system_bridge_delbr(dev
);
767 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
769 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
770 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
773 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
774 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
775 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
776 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
777 system_set_disable_ipv6(dev
, "0");
780 static inline unsigned long
781 sec_to_jiffies(int val
)
783 return (unsigned long) val
* 100;
786 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
788 unsigned long args
[4] = {};
790 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
793 args
[0] = BRCTL_SET_BRIDGE_STP_STATE
;
794 args
[1] = !!cfg
->stp
;
795 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
797 args
[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY
;
798 args
[1] = sec_to_jiffies(cfg
->forward_delay
);
799 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
801 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
802 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
804 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
805 bridge
->ifname
, cfg
->multicast_querier
? "1" : "0");
807 args
[0] = BRCTL_SET_BRIDGE_PRIORITY
;
808 args
[1] = cfg
->priority
;
809 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
811 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
812 args
[0] = BRCTL_SET_AGEING_TIME
;
813 args
[1] = sec_to_jiffies(cfg
->ageing_time
);
814 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
817 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
818 args
[0] = BRCTL_SET_BRIDGE_HELLO_TIME
;
819 args
[1] = sec_to_jiffies(cfg
->hello_time
);
820 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
823 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
824 args
[0] = BRCTL_SET_BRIDGE_MAX_AGE
;
825 args
[1] = sec_to_jiffies(cfg
->max_age
);
826 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
832 int system_macvlan_add(struct device
*macvlan
, struct device
*dev
, struct macvlan_config
*cfg
)
835 struct nlattr
*linkinfo
, *data
;
836 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
, };
838 static const struct {
840 enum macvlan_mode val
;
842 { "private", MACVLAN_MODE_PRIVATE
},
843 { "vepa", MACVLAN_MODE_VEPA
},
844 { "bridge", MACVLAN_MODE_BRIDGE
},
845 { "passthru", MACVLAN_MODE_PASSTHRU
},
848 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
853 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
855 if (cfg
->flags
& MACVLAN_OPT_MACADDR
)
856 nla_put(msg
, IFLA_ADDRESS
, sizeof(cfg
->macaddr
), cfg
->macaddr
);
857 nla_put_string(msg
, IFLA_IFNAME
, macvlan
->ifname
);
858 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
860 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
861 goto nla_put_failure
;
863 nla_put_string(msg
, IFLA_INFO_KIND
, "macvlan");
865 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
866 goto nla_put_failure
;
869 for (i
= 0; i
< ARRAY_SIZE(modes
); i
++) {
870 if (strcmp(cfg
->mode
, modes
[i
].name
) != 0)
873 nla_put_u32(msg
, IFLA_MACVLAN_MODE
, modes
[i
].val
);
878 nla_nest_end(msg
, data
);
879 nla_nest_end(msg
, linkinfo
);
881 rv
= system_rtnl_call(msg
);
883 D(SYSTEM
, "Error adding macvlan '%s' over '%s': %d\n", macvlan
->ifname
, dev
->ifname
, rv
);
892 static int system_link_del(const char *ifname
)
895 struct ifinfomsg iim
= {
896 .ifi_family
= AF_UNSPEC
,
900 msg
= nlmsg_alloc_simple(RTM_DELLINK
, NLM_F_REQUEST
);
905 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
906 nla_put_string(msg
, IFLA_IFNAME
, ifname
);
907 return system_rtnl_call(msg
);
910 int system_macvlan_del(struct device
*macvlan
)
912 return system_link_del(macvlan
->ifname
);
915 static int system_vlan(struct device
*dev
, int id
)
917 struct vlan_ioctl_args ifr
= {
918 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
919 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
922 ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
925 ifr
.cmd
= DEL_VLAN_CMD
;
928 ifr
.cmd
= ADD_VLAN_CMD
;
931 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
932 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
935 int system_vlan_add(struct device
*dev
, int id
)
937 return system_vlan(dev
, id
);
940 int system_vlan_del(struct device
*dev
)
942 return system_vlan(dev
, -1);
945 int system_vlandev_add(struct device
*vlandev
, struct device
*dev
, struct vlandev_config
*cfg
)
948 struct nlattr
*linkinfo
, *data
;
949 struct ifinfomsg iim
= { .ifi_family
= AF_UNSPEC
};
952 msg
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_EXCL
);
957 nlmsg_append(msg
, &iim
, sizeof(iim
), 0);
958 nla_put_string(msg
, IFLA_IFNAME
, vlandev
->ifname
);
959 nla_put_u32(msg
, IFLA_LINK
, dev
->ifindex
);
961 if (!(linkinfo
= nla_nest_start(msg
, IFLA_LINKINFO
)))
962 goto nla_put_failure
;
964 nla_put_string(msg
, IFLA_INFO_KIND
, "vlan");
966 if (!(data
= nla_nest_start(msg
, IFLA_INFO_DATA
)))
967 goto nla_put_failure
;
969 nla_put_u16(msg
, IFLA_VLAN_ID
, cfg
->vid
);
971 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
972 nla_put_u16(msg
, IFLA_VLAN_PROTOCOL
, htons(cfg
->proto
));
974 if(cfg
->proto
== VLAN_PROTO_8021AD
)
975 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
);
978 nla_nest_end(msg
, data
);
979 nla_nest_end(msg
, linkinfo
);
981 rv
= system_rtnl_call(msg
);
983 D(SYSTEM
, "Error adding vlandev '%s' over '%s': %d\n", vlandev
->ifname
, dev
->ifname
, rv
);
992 int system_vlandev_del(struct device
*vlandev
)
994 return system_link_del(vlandev
->ifname
);
998 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
1003 memset(&ifr
, 0, sizeof(ifr
));
1004 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1006 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
1007 s
->mtu
= ifr
.ifr_mtu
;
1008 s
->flags
|= DEV_OPT_MTU
;
1011 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
1012 s
->txqueuelen
= ifr
.ifr_qlen
;
1013 s
->flags
|= DEV_OPT_TXQUEUELEN
;
1016 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
1017 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
1018 s
->flags
|= DEV_OPT_MACADDR
;
1021 if (!system_get_disable_ipv6(dev
, buf
, sizeof(buf
))) {
1022 s
->ipv6
= !strtoul(buf
, NULL
, 0);
1023 s
->flags
|= DEV_OPT_IPV6
;
1026 if (ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
) == 0) {
1027 s
->promisc
= ifr
.ifr_flags
& IFF_PROMISC
;
1028 s
->flags
|= DEV_OPT_PROMISC
;
1031 if (!system_get_rpfilter(dev
, buf
, sizeof(buf
))) {
1032 s
->rpfilter
= strtoul(buf
, NULL
, 0);
1033 s
->flags
|= DEV_OPT_RPFILTER
;
1036 if (!system_get_acceptlocal(dev
, buf
, sizeof(buf
))) {
1037 s
->acceptlocal
= strtoul(buf
, NULL
, 0);
1038 s
->flags
|= DEV_OPT_ACCEPTLOCAL
;
1041 if (!system_get_igmpversion(dev
, buf
, sizeof(buf
))) {
1042 s
->igmpversion
= strtoul(buf
, NULL
, 0);
1043 s
->flags
|= DEV_OPT_IGMPVERSION
;
1046 if (!system_get_mldversion(dev
, buf
, sizeof(buf
))) {
1047 s
->mldversion
= strtoul(buf
, NULL
, 0);
1048 s
->flags
|= DEV_OPT_MLDVERSION
;
1051 if (!system_get_neigh4reachabletime(dev
, buf
, sizeof(buf
))) {
1052 s
->neigh4reachabletime
= strtoul(buf
, NULL
, 0);
1053 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1056 if (!system_get_neigh6reachabletime(dev
, buf
, sizeof(buf
))) {
1057 s
->neigh6reachabletime
= strtoul(buf
, NULL
, 0);
1058 s
->flags
|= DEV_OPT_NEIGHREACHABLETIME
;
1063 system_if_set_rps_xps_val(const char *path
, int val
)
1069 if (glob(path
, 0, NULL
, &gl
))
1072 snprintf(val_buf
, sizeof(val_buf
), "%x", val
);
1073 for (i
= 0; i
< gl
.gl_pathc
; i
++)
1074 system_set_sysctl(gl
.gl_pathv
[i
], val_buf
);
1078 system_if_apply_rps_xps(struct device
*dev
, struct device_settings
*s
)
1080 long n_cpus
= sysconf(_SC_NPROCESSORS_ONLN
);
1086 val
= (1 << n_cpus
) - 1;
1087 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/rps_cpus", dev
->ifname
);
1088 system_if_set_rps_xps_val(dev_buf
, s
->rps
? val
: 0);
1090 snprintf(dev_buf
, sizeof(dev_buf
), "/sys/class/net/%s/queues/*/xps_cpus", dev
->ifname
);
1091 system_if_set_rps_xps_val(dev_buf
, s
->xps
? val
: 0);
1095 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
, unsigned int apply_mask
)
1099 memset(&ifr
, 0, sizeof(ifr
));
1100 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
1101 if (s
->flags
& DEV_OPT_MTU
& apply_mask
) {
1102 ifr
.ifr_mtu
= s
->mtu
;
1103 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
1104 s
->flags
&= ~DEV_OPT_MTU
;
1106 if (s
->flags
& DEV_OPT_TXQUEUELEN
& apply_mask
) {
1107 ifr
.ifr_qlen
= s
->txqueuelen
;
1108 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
1109 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
1111 if ((s
->flags
& DEV_OPT_MACADDR
& apply_mask
) && !dev
->external
) {
1112 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
1113 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
1114 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
1115 s
->flags
&= ~DEV_OPT_MACADDR
;
1117 if (s
->flags
& DEV_OPT_IPV6
& apply_mask
)
1118 system_set_disable_ipv6(dev
, s
->ipv6
? "0" : "1");
1119 if (s
->flags
& DEV_OPT_PROMISC
& apply_mask
) {
1120 if (system_if_flags(dev
->ifname
, s
->promisc
? IFF_PROMISC
: 0,
1121 !s
->promisc
? IFF_PROMISC
: 0) < 0)
1122 s
->flags
&= ~DEV_OPT_PROMISC
;
1124 if (s
->flags
& DEV_OPT_RPFILTER
& apply_mask
) {
1127 snprintf(buf
, sizeof(buf
), "%d", s
->rpfilter
);
1128 system_set_rpfilter(dev
, buf
);
1130 if (s
->flags
& DEV_OPT_ACCEPTLOCAL
& apply_mask
)
1131 system_set_acceptlocal(dev
, s
->acceptlocal
? "1" : "0");
1132 if (s
->flags
& DEV_OPT_IGMPVERSION
& apply_mask
) {
1135 snprintf(buf
, sizeof(buf
), "%d", s
->igmpversion
);
1136 system_set_igmpversion(dev
, buf
);
1138 if (s
->flags
& DEV_OPT_MLDVERSION
& apply_mask
) {
1141 snprintf(buf
, sizeof(buf
), "%d", s
->mldversion
);
1142 system_set_mldversion(dev
, buf
);
1144 if (s
->flags
& DEV_OPT_NEIGHREACHABLETIME
& apply_mask
) {
1147 snprintf(buf
, sizeof(buf
), "%d", s
->neigh4reachabletime
);
1148 system_set_neigh4reachabletime(dev
, buf
);
1149 snprintf(buf
, sizeof(buf
), "%d", s
->neigh6reachabletime
);
1150 system_set_neigh6reachabletime(dev
, buf
);
1153 system_if_apply_rps_xps(dev
, s
);
1156 int system_if_up(struct device
*dev
)
1158 system_if_get_settings(dev
, &dev
->orig_settings
);
1159 /* Only keep orig settings based on what needs to be set */
1160 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
1161 system_if_apply_settings(dev
, &dev
->settings
, dev
->settings
.flags
);
1162 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
1165 int system_if_down(struct device
*dev
)
1167 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
1168 system_if_apply_settings(dev
, &dev
->orig_settings
, dev
->orig_settings
.flags
);
1172 struct if_check_data
{
1178 #ifndef IFF_LOWER_UP
1179 #define IFF_LOWER_UP 0x10000
1182 static int cb_if_check_valid(struct nl_msg
*msg
, void *arg
)
1184 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
1185 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
1186 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1188 if (nh
->nlmsg_type
!= RTM_NEWLINK
)
1191 device_set_present(chk
->dev
, ifi
->ifi_index
> 0 ? true : false);
1192 device_set_link(chk
->dev
, ifi
->ifi_flags
& IFF_LOWER_UP
? true : false);
1197 static int cb_if_check_ack(struct nl_msg
*msg
, void *arg
)
1199 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1204 static int cb_if_check_error(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
1206 struct if_check_data
*chk
= (struct if_check_data
*)arg
;
1208 device_set_present(chk
->dev
, false);
1209 device_set_link(chk
->dev
, false);
1210 chk
->pending
= err
->error
;
1215 int system_if_check(struct device
*dev
)
1217 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1219 struct ifinfomsg ifi
= {
1220 .ifi_family
= AF_UNSPEC
,
1223 struct if_check_data chk
= {
1229 msg
= nlmsg_alloc_simple(RTM_GETLINK
, 0);
1230 if (!msg
|| nlmsg_append(msg
, &ifi
, sizeof(ifi
), 0) ||
1231 nla_put_string(msg
, IFLA_IFNAME
, dev
->ifname
))
1234 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_if_check_valid
, &chk
);
1235 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, cb_if_check_ack
, &chk
);
1236 nl_cb_err(cb
, NL_CB_CUSTOM
, cb_if_check_error
, &chk
);
1238 nl_send_auto_complete(sock_rtnl
, msg
);
1239 while (chk
.pending
> 0)
1240 nl_recvmsgs(sock_rtnl
, cb
);
1251 system_if_get_parent(struct device
*dev
)
1253 char buf
[64], *devname
;
1254 int ifindex
, iflink
, len
;
1257 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
1258 f
= fopen(buf
, "r");
1262 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
1269 iflink
= strtoul(buf
, NULL
, 0);
1270 ifindex
= system_if_resolve(dev
);
1271 if (!iflink
|| iflink
== ifindex
)
1274 devname
= if_indextoname(iflink
, buf
);
1278 return device_get(devname
, true);
1282 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
1288 fd
= openat(dir_fd
, file
, O_RDONLY
);
1293 len
= read(fd
, buf
, len
- 1);
1297 } else if (len
> 0) {
1300 c
= strchr(buf
, '\n');
1313 read_uint64_file(int dir_fd
, const char *file
, uint64_t *val
)
1318 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
1320 *val
= strtoull(buf
, NULL
, 0);
1325 /* Assume advertised flags == supported flags */
1326 static const struct {
1329 } ethtool_link_modes
[] = {
1330 { ADVERTISED_10baseT_Half
, "10H" },
1331 { ADVERTISED_10baseT_Full
, "10F" },
1332 { ADVERTISED_100baseT_Half
, "100H" },
1333 { ADVERTISED_100baseT_Full
, "100F" },
1334 { ADVERTISED_1000baseT_Half
, "1000H" },
1335 { ADVERTISED_1000baseT_Full
, "1000F" },
1338 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
1341 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
1342 if (mask
& ethtool_link_modes
[i
].mask
)
1343 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
1348 system_if_force_external(const char *ifname
)
1353 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/phy80211", ifname
);
1354 return stat(buf
, &s
) == 0;
1358 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
1360 struct ethtool_cmd ecmd
;
1366 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s", dev
->ifname
);
1367 dir_fd
= open(buf
, O_DIRECTORY
);
1369 memset(&ecmd
, 0, sizeof(ecmd
));
1370 memset(&ifr
, 0, sizeof(ifr
));
1371 strcpy(ifr
.ifr_name
, dev
->ifname
);
1372 ifr
.ifr_data
= (caddr_t
) &ecmd
;
1373 ecmd
.cmd
= ETHTOOL_GSET
;
1375 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
1376 c
= blobmsg_open_array(b
, "link-advertising");
1377 system_add_link_modes(b
, ecmd
.advertising
);
1378 blobmsg_close_array(b
, c
);
1380 c
= blobmsg_open_array(b
, "link-supported");
1381 system_add_link_modes(b
, ecmd
.supported
);
1382 blobmsg_close_array(b
, c
);
1384 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
1385 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
1386 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
1387 blobmsg_add_string_buffer(b
);
1395 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
1397 const char *const counters
[] = {
1398 "collisions", "rx_frame_errors", "tx_compressed",
1399 "multicast", "rx_length_errors", "tx_dropped",
1400 "rx_bytes", "rx_missed_errors", "tx_errors",
1401 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
1402 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
1403 "rx_dropped", "tx_aborted_errors", "tx_packets",
1404 "rx_errors", "tx_bytes", "tx_window_errors",
1405 "rx_fifo_errors", "tx_carrier_errors",
1412 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
1413 stats_dir
= open(buf
, O_DIRECTORY
);
1417 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
1418 if (read_uint64_file(stats_dir
, counters
[i
], &val
))
1419 blobmsg_add_u64(b
, counters
[i
], val
);
1425 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
1427 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
1428 int alen
= v4
? 4 : 16;
1429 unsigned int flags
= 0;
1430 struct ifaddrmsg ifa
= {
1431 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1432 .ifa_prefixlen
= addr
->mask
,
1433 .ifa_index
= dev
->ifindex
,
1434 .ifa_flags
= (addr
->flags
& DEVADDR_OFFLINK
) ? IFA_F_NOPREFIXROUTE
: 0,
1438 if (cmd
== RTM_NEWADDR
)
1439 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1441 msg
= nlmsg_alloc_simple(cmd
, flags
);
1445 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
1446 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
1448 if (addr
->broadcast
)
1449 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
1450 if (addr
->point_to_point
)
1451 nla_put_u32(msg
, IFA_ADDRESS
, addr
->point_to_point
);
1453 time_t now
= system_get_rtime();
1454 struct ifa_cacheinfo cinfo
= {0xffffffffU
, 0xffffffffU
, 0, 0};
1456 if (addr
->preferred_until
) {
1457 int64_t preferred
= addr
->preferred_until
- now
;
1460 else if (preferred
> UINT32_MAX
)
1461 preferred
= UINT32_MAX
;
1463 cinfo
.ifa_prefered
= preferred
;
1466 if (addr
->valid_until
) {
1467 int64_t valid
= addr
->valid_until
- now
;
1470 else if (valid
> UINT32_MAX
)
1473 cinfo
.ifa_valid
= valid
;
1476 nla_put(msg
, IFA_CACHEINFO
, sizeof(cinfo
), &cinfo
);
1479 return system_rtnl_call(msg
);
1482 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
1484 return system_addr(dev
, addr
, RTM_NEWADDR
);
1487 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
1489 return system_addr(dev
, addr
, RTM_DELADDR
);
1492 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
1494 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
1496 unsigned int flags
= 0;
1499 have_gw
= !!route
->nexthop
.in
.s_addr
;
1501 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
1502 route
->nexthop
.in6
.s6_addr32
[1] ||
1503 route
->nexthop
.in6
.s6_addr32
[2] ||
1504 route
->nexthop
.in6
.s6_addr32
[3];
1506 unsigned int table
= (route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))
1507 ? route
->table
: RT_TABLE_MAIN
;
1509 struct rtmsg rtm
= {
1510 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1511 .rtm_dst_len
= route
->mask
,
1512 .rtm_src_len
= route
->sourcemask
,
1513 .rtm_table
= (table
< 256) ? table
: RT_TABLE_UNSPEC
,
1514 .rtm_protocol
= (route
->flags
& DEVADDR_KERNEL
) ? RTPROT_KERNEL
: RTPROT_STATIC
,
1515 .rtm_scope
= RT_SCOPE_NOWHERE
,
1516 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
1517 .rtm_flags
= (route
->flags
& DEVROUTE_ONLINK
) ? RTNH_F_ONLINK
: 0,
1521 if (cmd
== RTM_NEWROUTE
) {
1522 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
1524 if (!dev
) { // Add null-route
1525 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1526 rtm
.rtm_type
= RTN_UNREACHABLE
;
1529 rtm
.rtm_scope
= (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
1532 if (route
->flags
& DEVROUTE_TYPE
) {
1533 rtm
.rtm_type
= route
->type
;
1534 if (!(route
->flags
& (DEVROUTE_TABLE
| DEVROUTE_SRCTABLE
))) {
1535 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_BROADCAST
||
1536 rtm
.rtm_type
== RTN_NAT
|| rtm
.rtm_type
== RTN_ANYCAST
)
1537 rtm
.rtm_table
= RT_TABLE_LOCAL
;
1540 if (rtm
.rtm_type
== RTN_LOCAL
|| rtm
.rtm_type
== RTN_NAT
) {
1541 rtm
.rtm_scope
= RT_SCOPE_HOST
;
1542 } else if (rtm
.rtm_type
== RTN_BROADCAST
|| rtm
.rtm_type
== RTN_MULTICAST
||
1543 rtm
.rtm_type
== RTN_ANYCAST
) {
1544 rtm
.rtm_scope
= RT_SCOPE_LINK
;
1545 } else if (rtm
.rtm_type
== RTN_BLACKHOLE
|| rtm
.rtm_type
== RTN_UNREACHABLE
||
1546 rtm
.rtm_type
== RTN_PROHIBIT
|| rtm
.rtm_type
== RTN_FAILED_POLICY
) {
1547 rtm
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1552 msg
= nlmsg_alloc_simple(cmd
, flags
);
1556 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
1559 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
1561 if (route
->sourcemask
) {
1562 if (rtm
.rtm_family
== AF_INET
)
1563 nla_put(msg
, RTA_PREFSRC
, alen
, &route
->source
);
1565 nla_put(msg
, RTA_SRC
, alen
, &route
->source
);
1568 if (route
->metric
> 0)
1569 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
1572 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
1575 nla_put_u32(msg
, RTA_OIF
, dev
->ifindex
);
1578 nla_put_u32(msg
, RTA_TABLE
, table
);
1580 if (route
->flags
& DEVROUTE_MTU
) {
1581 struct nlattr
*metrics
;
1583 if (!(metrics
= nla_nest_start(msg
, RTA_METRICS
)))
1584 goto nla_put_failure
;
1586 nla_put_u32(msg
, RTAX_MTU
, route
->mtu
);
1588 nla_nest_end(msg
, metrics
);
1591 return system_rtnl_call(msg
);
1598 int system_add_route(struct device
*dev
, struct device_route
*route
)
1600 return system_rt(dev
, route
, RTM_NEWROUTE
);
1603 int system_del_route(struct device
*dev
, struct device_route
*route
)
1605 return system_rt(dev
, route
, RTM_DELROUTE
);
1608 int system_flush_routes(void)
1610 const char *names
[] = {
1611 "/proc/sys/net/ipv4/route/flush",
1612 "/proc/sys/net/ipv6/route/flush"
1616 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
1617 fd
= open(names
[i
], O_WRONLY
);
1621 if (write(fd
, "-1", 2)) {}
1627 bool system_resolve_rt_type(const char *type
, unsigned int *id
)
1629 return system_rtn_aton(type
, id
);
1632 bool system_resolve_rt_table(const char *name
, unsigned int *id
)
1636 unsigned int n
, table
= RT_TABLE_UNSPEC
;
1638 /* first try to parse table as number */
1639 if ((n
= strtoul(name
, &e
, 0)) > 0 && !*e
)
1642 /* handle well known aliases */
1643 else if (!strcmp(name
, "default"))
1644 table
= RT_TABLE_DEFAULT
;
1645 else if (!strcmp(name
, "main"))
1646 table
= RT_TABLE_MAIN
;
1647 else if (!strcmp(name
, "local"))
1648 table
= RT_TABLE_LOCAL
;
1649 else if (!strcmp(name
, "prelocal"))
1650 table
= RT_TABLE_PRELOCAL
;
1652 /* try to look up name in /etc/iproute2/rt_tables */
1653 else if ((f
= fopen("/etc/iproute2/rt_tables", "r")) != NULL
)
1655 while (fgets(buf
, sizeof(buf
) - 1, f
) != NULL
)
1657 if ((e
= strtok(buf
, " \t\n")) == NULL
|| *e
== '#')
1660 n
= strtoul(e
, NULL
, 10);
1661 e
= strtok(NULL
, " \t\n");
1663 if (e
&& !strcmp(e
, name
))
1673 if (table
== RT_TABLE_UNSPEC
)
1680 bool system_is_default_rt_table(unsigned int id
)
1682 return (id
== RT_TABLE_MAIN
);
1685 bool system_resolve_rpfilter(const char *filter
, unsigned int *id
)
1690 if (!strcmp(filter
, "strict"))
1692 else if (!strcmp(filter
, "loose"))
1695 n
= strtoul(filter
, &e
, 0);
1696 if (*e
|| e
== filter
|| n
> 2)
1704 static int system_iprule(struct iprule
*rule
, int cmd
)
1706 int alen
= ((rule
->flags
& IPRULE_FAMILY
) == IPRULE_INET4
) ? 4 : 16;
1709 struct rtmsg rtm
= {
1710 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
1711 .rtm_protocol
= RTPROT_STATIC
,
1712 .rtm_scope
= RT_SCOPE_UNIVERSE
,
1713 .rtm_table
= RT_TABLE_UNSPEC
,
1714 .rtm_type
= RTN_UNSPEC
,
1718 if (cmd
== RTM_NEWRULE
) {
1719 rtm
.rtm_type
= RTN_UNICAST
;
1720 rtm
.rtm_flags
|= NLM_F_REPLACE
| NLM_F_EXCL
;
1724 rtm
.rtm_flags
|= FIB_RULE_INVERT
;
1726 if (rule
->flags
& IPRULE_SRC
)
1727 rtm
.rtm_src_len
= rule
->src_mask
;
1729 if (rule
->flags
& IPRULE_DEST
)
1730 rtm
.rtm_dst_len
= rule
->dest_mask
;
1732 if (rule
->flags
& IPRULE_TOS
)
1733 rtm
.rtm_tos
= rule
->tos
;
1735 if (rule
->flags
& IPRULE_LOOKUP
) {
1736 if (rule
->lookup
< 256)
1737 rtm
.rtm_table
= rule
->lookup
;
1740 if (rule
->flags
& IPRULE_ACTION
)
1741 rtm
.rtm_type
= rule
->action
;
1742 else if (rule
->flags
& IPRULE_GOTO
)
1743 rtm
.rtm_type
= FR_ACT_GOTO
;
1744 else if (!(rule
->flags
& (IPRULE_LOOKUP
| IPRULE_ACTION
| IPRULE_GOTO
)))
1745 rtm
.rtm_type
= FR_ACT_NOP
;
1747 msg
= nlmsg_alloc_simple(cmd
, NLM_F_REQUEST
);
1752 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
1754 if (rule
->flags
& IPRULE_IN
)
1755 nla_put(msg
, FRA_IFNAME
, strlen(rule
->in_dev
) + 1, rule
->in_dev
);
1757 if (rule
->flags
& IPRULE_OUT
)
1758 nla_put(msg
, FRA_OIFNAME
, strlen(rule
->out_dev
) + 1, rule
->out_dev
);
1760 if (rule
->flags
& IPRULE_SRC
)
1761 nla_put(msg
, FRA_SRC
, alen
, &rule
->src_addr
);
1763 if (rule
->flags
& IPRULE_DEST
)
1764 nla_put(msg
, FRA_DST
, alen
, &rule
->dest_addr
);
1766 if (rule
->flags
& IPRULE_PRIORITY
)
1767 nla_put_u32(msg
, FRA_PRIORITY
, rule
->priority
);
1768 else if (cmd
== RTM_NEWRULE
)
1769 nla_put_u32(msg
, FRA_PRIORITY
, rule
->order
);
1771 if (rule
->flags
& IPRULE_FWMARK
)
1772 nla_put_u32(msg
, FRA_FWMARK
, rule
->fwmark
);
1774 if (rule
->flags
& IPRULE_FWMASK
)
1775 nla_put_u32(msg
, FRA_FWMASK
, rule
->fwmask
);
1777 if (rule
->flags
& IPRULE_LOOKUP
) {
1778 if (rule
->lookup
>= 256)
1779 nla_put_u32(msg
, FRA_TABLE
, rule
->lookup
);
1782 if (rule
->flags
& IPRULE_GOTO
)
1783 nla_put_u32(msg
, FRA_GOTO
, rule
->gotoid
);
1785 return system_rtnl_call(msg
);
1788 int system_add_iprule(struct iprule
*rule
)
1790 return system_iprule(rule
, RTM_NEWRULE
);
1793 int system_del_iprule(struct iprule
*rule
)
1795 return system_iprule(rule
, RTM_DELRULE
);
1798 int system_flush_iprules(void)
1803 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET
);
1804 system_if_clear_entries(NULL
, RTM_GETRULE
, AF_INET6
);
1806 memset(&rule
, 0, sizeof(rule
));
1809 rule
.flags
= IPRULE_INET4
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
1812 rule
.lookup
= RT_TABLE_PRELOCAL
;
1813 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1816 rule
.lookup
= RT_TABLE_LOCAL
;
1817 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1819 rule
.priority
= 32766;
1820 rule
.lookup
= RT_TABLE_MAIN
;
1821 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1823 rule
.priority
= 32767;
1824 rule
.lookup
= RT_TABLE_DEFAULT
;
1825 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1828 rule
.flags
= IPRULE_INET6
| IPRULE_PRIORITY
| IPRULE_LOOKUP
;
1831 rule
.lookup
= RT_TABLE_PRELOCAL
;
1832 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1835 rule
.lookup
= RT_TABLE_LOCAL
;
1836 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1838 rule
.priority
= 32766;
1839 rule
.lookup
= RT_TABLE_MAIN
;
1840 rv
|= system_iprule(&rule
, RTM_NEWRULE
);
1845 bool system_resolve_iprule_action(const char *action
, unsigned int *id
)
1847 return system_rtn_aton(action
, id
);
1850 time_t system_get_rtime(void)
1855 if (syscall(__NR_clock_gettime
, CLOCK_MONOTONIC
, &ts
) == 0)
1858 if (gettimeofday(&tv
, NULL
) == 0)
1865 #define IP_DF 0x4000
1868 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
1872 memset(&ifr
, 0, sizeof(ifr
));
1873 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
));
1874 ifr
.ifr_ifru
.ifru_data
= p
;
1875 return ioctl(sock_ioctl
, cmd
, &ifr
);
1878 #ifdef IFLA_IPTUN_MAX
1879 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
1880 static int system_add_gre_tunnel(const char *name
, const char *kind
,
1881 const unsigned int link
, struct blob_attr
**tb
, bool v6
)
1884 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
, };
1885 struct blob_attr
*cur
;
1886 uint32_t ikey
= 0, okey
= 0, flags
= 0, flowinfo
= 0;
1887 uint16_t iflags
= 0, oflags
= 0;
1889 int ret
= 0, ttl
= 64;
1891 nlm
= nlmsg_alloc_simple(RTM_NEWLINK
, NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
1895 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
1896 nla_put_string(nlm
, IFLA_IFNAME
, name
);
1898 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
1904 nla_put_string(nlm
, IFLA_INFO_KIND
, kind
);
1905 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
1912 nla_put_u32(nlm
, IFLA_GRE_LINK
, link
);
1914 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
1915 ttl
= blobmsg_get_u32(cur
);
1917 nla_put_u8(nlm
, IFLA_GRE_TTL
, ttl
);
1919 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
1920 char *str
= blobmsg_get_string(cur
);
1921 if (strcmp(str
, "inherit")) {
1924 if (!system_tos_aton(str
, &uval
)) {
1930 flowinfo
|= htonl(uval
<< 20) & IP6_FLOWINFO_TCLASS
;
1935 flags
|= IP6_TNL_F_USE_ORIG_TCLASS
;
1941 if ((cur
= tb
[TUNNEL_ATTR_INFO
]) && (blobmsg_type(cur
) == BLOBMSG_TYPE_STRING
)) {
1942 uint8_t icsum
, ocsum
, iseqno
, oseqno
;
1943 if (sscanf(blobmsg_get_string(cur
), "%u,%u,%hhu,%hhu,%hhu,%hhu",
1944 &ikey
, &okey
, &icsum
, &ocsum
, &iseqno
, &oseqno
) < 6) {
1969 struct in6_addr in6buf
;
1970 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
1971 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
1975 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(in6buf
), &in6buf
);
1978 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
1979 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
1983 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(in6buf
), &in6buf
);
1985 nla_put_u8(nlm
, IFLA_GRE_ENCAP_LIMIT
, 4);
1988 nla_put_u32(nlm
, IFLA_GRE_FLOWINFO
, flowinfo
);
1991 nla_put_u32(nlm
, IFLA_GRE_FLAGS
, flags
);
1993 struct in_addr inbuf
;
1996 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
1997 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2001 nla_put(nlm
, IFLA_GRE_LOCAL
, sizeof(inbuf
), &inbuf
);
2004 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2005 if (inet_pton(AF_INET
, blobmsg_data(cur
), &inbuf
) < 1) {
2009 nla_put(nlm
, IFLA_GRE_REMOTE
, sizeof(inbuf
), &inbuf
);
2011 if (IN_MULTICAST(ntohl(inbuf
.s_addr
))) {
2013 okey
= inbuf
.s_addr
;
2018 ikey
= inbuf
.s_addr
;
2024 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2025 set_df
= blobmsg_get_bool(cur
);
2027 /* ttl !=0 and nopmtudisc are incompatible */
2028 if (ttl
&& !set_df
) {
2033 nla_put_u8(nlm
, IFLA_GRE_PMTUDISC
, set_df
? 1 : 0);
2035 nla_put_u8(nlm
, IFLA_GRE_TOS
, tos
);
2039 nla_put_u16(nlm
, IFLA_GRE_OFLAGS
, oflags
);
2042 nla_put_u16(nlm
, IFLA_GRE_IFLAGS
, iflags
);
2045 nla_put_u32(nlm
, IFLA_GRE_OKEY
, okey
);
2048 nla_put_u32(nlm
, IFLA_GRE_IKEY
, ikey
);
2050 nla_nest_end(nlm
, infodata
);
2051 nla_nest_end(nlm
, linkinfo
);
2053 return system_rtnl_call(nlm
);
2061 static int system_add_proto_tunnel(const char *name
, const uint8_t proto
, const unsigned int link
, struct blob_attr
**tb
)
2063 struct blob_attr
*cur
;
2065 struct ip_tunnel_parm p
= {
2074 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
]) &&
2075 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.saddr
) < 1)
2078 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
]) &&
2079 inet_pton(AF_INET
, blobmsg_data(cur
), &p
.iph
.daddr
) < 1)
2082 if ((cur
= tb
[TUNNEL_ATTR_DF
]))
2083 set_df
= blobmsg_get_bool(cur
);
2085 if ((cur
= tb
[TUNNEL_ATTR_TTL
]))
2086 p
.iph
.ttl
= blobmsg_get_u32(cur
);
2088 if ((cur
= tb
[TUNNEL_ATTR_TOS
])) {
2089 char *str
= blobmsg_get_string(cur
);
2090 if (strcmp(str
, "inherit")) {
2093 if (!system_tos_aton(str
, &uval
))
2101 p
.iph
.frag_off
= set_df
? htons(IP_DF
) : 0;
2102 /* ttl !=0 and nopmtudisc are incompatible */
2103 if (p
.iph
.ttl
&& p
.iph
.frag_off
== 0)
2106 strncpy(p
.name
, name
, sizeof(p
.name
));
2108 switch (p
.iph
.protocol
) {
2110 return tunnel_ioctl("tunl0", SIOCADDTUNNEL
, &p
);
2112 return tunnel_ioctl("sit0", SIOCADDTUNNEL
, &p
);
2119 static int __system_del_ip_tunnel(const char *name
, struct blob_attr
**tb
)
2121 struct blob_attr
*cur
;
2124 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2126 str
= blobmsg_data(cur
);
2128 if (!strcmp(str
, "greip") || !strcmp(str
, "gretapip") ||
2129 !strcmp(str
, "greip6") || !strcmp(str
, "gretapip6"))
2130 return system_link_del(name
);
2132 return tunnel_ioctl(name
, SIOCDELTUNNEL
, NULL
);
2135 int system_del_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2137 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2139 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2140 blob_data(attr
), blob_len(attr
));
2142 return __system_del_ip_tunnel(name
, tb
);
2145 int system_update_ipv6_mtu(struct device
*dev
, int mtu
)
2149 snprintf(buf
, sizeof(buf
), "/proc/sys/net/ipv6/conf/%s/mtu",
2152 int fd
= open(buf
, O_RDWR
);
2153 ssize_t len
= read(fd
, buf
, sizeof(buf
) - 1);
2160 if (!mtu
|| ret
<= mtu
)
2163 lseek(fd
, 0, SEEK_SET
);
2164 if (write(fd
, buf
, snprintf(buf
, sizeof(buf
), "%i", mtu
)) <= 0)
2172 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
2174 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
2175 struct blob_attr
*cur
;
2178 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
2179 blob_data(attr
), blob_len(attr
));
2181 __system_del_ip_tunnel(name
, tb
);
2183 if (!(cur
= tb
[TUNNEL_ATTR_TYPE
]))
2185 str
= blobmsg_data(cur
);
2187 unsigned int ttl
= 0;
2188 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
2189 ttl
= blobmsg_get_u32(cur
);
2194 unsigned int link
= 0;
2195 if ((cur
= tb
[TUNNEL_ATTR_LINK
])) {
2196 struct interface
*iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
2200 if (iface
->l3_dev
.dev
)
2201 link
= iface
->l3_dev
.dev
->ifindex
;
2204 if (!strcmp(str
, "sit")) {
2205 if (system_add_proto_tunnel(name
, IPPROTO_IPV6
, link
, tb
) < 0)
2209 if ((cur
= tb
[TUNNEL_ATTR_6RD_PREFIX
])) {
2211 struct ip_tunnel_6rd p6
;
2213 memset(&p6
, 0, sizeof(p6
));
2215 if (!parse_ip_and_netmask(AF_INET6
, blobmsg_data(cur
),
2216 &p6
.prefix
, &mask
) || mask
> 128)
2218 p6
.prefixlen
= mask
;
2220 if ((cur
= tb
[TUNNEL_ATTR_6RD_RELAY_PREFIX
])) {
2221 if (!parse_ip_and_netmask(AF_INET
, blobmsg_data(cur
),
2222 &p6
.relay_prefix
, &mask
) || mask
> 32)
2224 p6
.relay_prefixlen
= mask
;
2227 if (tunnel_ioctl(name
, SIOCADD6RD
, &p6
) < 0) {
2228 __system_del_ip_tunnel(name
, tb
);
2233 #ifdef IFLA_IPTUN_MAX
2234 } else if (!strcmp(str
, "ipip6")) {
2235 struct nl_msg
*nlm
= nlmsg_alloc_simple(RTM_NEWLINK
,
2236 NLM_F_REQUEST
| NLM_F_REPLACE
| NLM_F_CREATE
);
2237 struct ifinfomsg ifi
= { .ifi_family
= AF_UNSPEC
};
2243 nlmsg_append(nlm
, &ifi
, sizeof(ifi
), 0);
2244 nla_put_string(nlm
, IFLA_IFNAME
, name
);
2247 nla_put_u32(nlm
, IFLA_LINK
, link
);
2249 struct nlattr
*linkinfo
= nla_nest_start(nlm
, IFLA_LINKINFO
);
2254 nla_put_string(nlm
, IFLA_INFO_KIND
, "ip6tnl");
2255 struct nlattr
*infodata
= nla_nest_start(nlm
, IFLA_INFO_DATA
);
2262 nla_put_u32(nlm
, IFLA_IPTUN_LINK
, link
);
2264 nla_put_u8(nlm
, IFLA_IPTUN_PROTO
, IPPROTO_IPIP
);
2265 nla_put_u8(nlm
, IFLA_IPTUN_TTL
, (ttl
) ? ttl
: 64);
2266 nla_put_u8(nlm
, IFLA_IPTUN_ENCAP_LIMIT
, 4);
2268 struct in6_addr in6buf
;
2269 if ((cur
= tb
[TUNNEL_ATTR_LOCAL
])) {
2270 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2274 nla_put(nlm
, IFLA_IPTUN_LOCAL
, sizeof(in6buf
), &in6buf
);
2277 if ((cur
= tb
[TUNNEL_ATTR_REMOTE
])) {
2278 if (inet_pton(AF_INET6
, blobmsg_data(cur
), &in6buf
) < 1) {
2282 nla_put(nlm
, IFLA_IPTUN_REMOTE
, sizeof(in6buf
), &in6buf
);
2285 #ifdef IFLA_IPTUN_FMR_MAX
2286 if ((cur
= tb
[TUNNEL_ATTR_FMRS
])) {
2287 struct nlattr
*fmrs
= nla_nest_start(nlm
, IFLA_IPTUN_FMRS
);
2289 struct blob_attr
*fmr
;
2290 unsigned rem
, fmrcnt
= 0;
2291 blobmsg_for_each_attr(fmr
, cur
, rem
) {
2292 if (blobmsg_type(fmr
) != BLOBMSG_TYPE_STRING
)
2295 unsigned ip4len
, ip6len
, ealen
, offset
= 6;
2299 if (sscanf(blobmsg_get_string(fmr
), "%47[^/]/%u,%15[^/]/%u,%u,%u",
2300 ip6buf
, &ip6len
, ip4buf
, &ip4len
, &ealen
, &offset
) < 5) {
2305 struct in6_addr ip6prefix
;
2306 struct in_addr ip4prefix
;
2307 if (inet_pton(AF_INET6
, ip6buf
, &ip6prefix
) != 1 ||
2308 inet_pton(AF_INET
, ip4buf
, &ip4prefix
) != 1) {
2313 struct nlattr
*rule
= nla_nest_start(nlm
, ++fmrcnt
);
2315 nla_put(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX
, sizeof(ip6prefix
), &ip6prefix
);
2316 nla_put(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX
, sizeof(ip4prefix
), &ip4prefix
);
2317 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP6_PREFIX_LEN
, ip6len
);
2318 nla_put_u8(nlm
, IFLA_IPTUN_FMR_IP4_PREFIX_LEN
, ip4len
);
2319 nla_put_u8(nlm
, IFLA_IPTUN_FMR_EA_LEN
, ealen
);
2320 nla_put_u8(nlm
, IFLA_IPTUN_FMR_OFFSET
, offset
);
2322 nla_nest_end(nlm
, rule
);
2325 nla_nest_end(nlm
, fmrs
);
2329 nla_nest_end(nlm
, infodata
);
2330 nla_nest_end(nlm
, linkinfo
);
2332 return system_rtnl_call(nlm
);
2336 } else if (!strcmp(str
, "greip")) {
2337 return system_add_gre_tunnel(name
, "gre", link
, tb
, false);
2338 } else if (!strcmp(str
, "gretapip")) {
2339 return system_add_gre_tunnel(name
, "gretap", link
, tb
, false);
2340 } else if (!strcmp(str
, "greip6")) {
2341 return system_add_gre_tunnel(name
, "ip6gre", link
, tb
, true);
2342 } else if (!strcmp(str
, "gretapip6")) {
2343 return system_add_gre_tunnel(name
, "ip6gretap", link
, tb
, true);
2345 } else if (!strcmp(str
, "ipip")) {
2346 return system_add_proto_tunnel(name
, IPPROTO_IPIP
, link
, tb
);