2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
16 #include <sys/socket.h>
17 #include <sys/ioctl.h>
19 #include <sys/syscall.h>
22 #include <net/if_arp.h>
24 #include <arpa/inet.h>
25 #include <netinet/in.h>
27 #include <linux/rtnetlink.h>
28 #include <linux/sockios.h>
30 #include <linux/if_vlan.h>
31 #include <linux/if_bridge.h>
32 #include <linux/if_tunnel.h>
33 #include <linux/ethtool.h>
41 #include <netlink/msg.h>
42 #include <netlink/attr.h>
43 #include <netlink/socket.h>
44 #include <libubox/uloop.h>
51 struct uloop_fd uloop
;
56 static int sock_ioctl
= -1;
57 static struct nl_sock
*sock_rtnl
= NULL
;
59 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
);
60 static void handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
);
62 static char dev_buf
[256];
65 handler_nl_event(struct uloop_fd
*u
, unsigned int events
)
67 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
68 nl_recvmsgs(ev
->sock
, ev
->cb
);
71 static struct nl_sock
*
72 create_socket(int protocol
, int groups
)
76 sock
= nl_socket_alloc();
81 nl_join_groups(sock
, groups
);
83 if (nl_connect(sock
, protocol
))
90 create_raw_event_socket(struct event_socket
*ev
, int protocol
, int groups
,
93 ev
->sock
= create_socket(protocol
, groups
);
97 ev
->uloop
.fd
= nl_socket_get_fd(ev
->sock
);
99 uloop_fd_add(&ev
->uloop
, ULOOP_READ
| ULOOP_EDGE_TRIGGER
);
104 create_event_socket(struct event_socket
*ev
, int protocol
,
105 int (*cb
)(struct nl_msg
*msg
, void *arg
))
107 // Prepare socket for link events
108 ev
->cb
= nl_cb_alloc(NL_CB_DEFAULT
);
112 nl_cb_set(ev
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, NULL
);
114 return create_raw_event_socket(ev
, protocol
, 0, handler_nl_event
);
117 int system_init(void)
119 static struct event_socket rtnl_event
;
120 static struct event_socket hotplug_event
;
122 sock_ioctl
= socket(AF_LOCAL
, SOCK_DGRAM
, 0);
123 fcntl(sock_ioctl
, F_SETFD
, fcntl(sock_ioctl
, F_GETFD
) | FD_CLOEXEC
);
125 // Prepare socket for routing / address control
126 sock_rtnl
= create_socket(NETLINK_ROUTE
, 0);
130 if (!create_event_socket(&rtnl_event
, NETLINK_ROUTE
, cb_rtnl_event
))
133 if (!create_raw_event_socket(&hotplug_event
, NETLINK_KOBJECT_UEVENT
, 1,
134 handle_hotplug_event
))
137 // Receive network link events form kernel
138 nl_socket_add_membership(rtnl_event
.sock
, RTNLGRP_LINK
);
143 static void system_set_sysctl(const char *path
, const char *val
)
147 fd
= open(path
, O_WRONLY
);
151 write(fd
, val
, strlen(val
));
155 static void system_set_dev_sysctl(const char *path
, const char *device
, const char *val
)
157 snprintf(dev_buf
, sizeof(dev_buf
), path
, val
);
158 system_set_sysctl(dev_buf
, val
);
161 static void system_set_disable_ipv6(struct device
*dev
, const char *val
)
163 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev
->ifname
, val
);
166 // Evaluate netlink messages
167 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
169 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
170 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
171 struct nlattr
*nla
[__IFLA_MAX
];
173 if (nh
->nlmsg_type
!= RTM_DELLINK
&& nh
->nlmsg_type
!= RTM_NEWLINK
)
176 nlmsg_parse(nh
, sizeof(*ifi
), nla
, __IFLA_MAX
- 1, NULL
);
177 if (!nla
[IFLA_IFNAME
])
180 struct device
*dev
= device_get(RTA_DATA(nla
[IFLA_IFNAME
]), false);
184 dev
->ifindex
= ifi
->ifi_index
;
185 /* TODO: parse link status */
192 handle_hotplug_msg(char *data
, int size
)
194 const char *subsystem
= NULL
, *interface
= NULL
;
195 char *cur
, *end
, *sep
;
200 if (!strncmp(data
, "add@", 4))
202 else if (!strncmp(data
, "remove@", 7))
207 skip
= strlen(data
) + 1;
210 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
211 skip
= strlen(cur
) + 1;
213 sep
= strchr(cur
, '=');
218 if (!strcmp(cur
, "INTERFACE"))
220 else if (!strcmp(cur
, "SUBSYSTEM")) {
222 if (strcmp(subsystem
, "net") != 0)
225 if (subsystem
&& interface
)
231 dev
= device_get(interface
, false);
235 if (dev
->type
!= &simple_device_type
)
238 device_set_present(dev
, add
);
242 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
244 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
245 struct sockaddr_nl nla
;
246 unsigned char *buf
= NULL
;
249 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
251 handle_hotplug_msg((char *) buf
, size
);
257 static int system_rtnl_call(struct nl_msg
*msg
)
261 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
267 return nl_wait_for_ack(sock_rtnl
);
270 int system_bridge_delbr(struct device
*bridge
)
272 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
275 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
279 ifr
.ifr_ifindex
= dev
->ifindex
;
282 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
));
283 return ioctl(sock_ioctl
, cmd
, &ifr
);
286 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
290 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
291 if (stat(buf
, &st
) < 0)
297 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
303 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
304 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
307 if (gl
.gl_pathc
== 0)
310 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
315 path
= strrchr(buf
, '/');
322 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
326 system_set_disable_ipv6(dev
, "1");
327 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
328 if (oldbr
&& !strcmp(oldbr
, bridge
->ifname
))
331 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
334 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
336 system_set_disable_ipv6(dev
, "0");
337 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
340 static int system_if_resolve(struct device
*dev
)
343 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
344 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
345 return ifr
.ifr_ifindex
;
350 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
353 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
));
354 ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
);
355 ifr
.ifr_flags
|= add
;
356 ifr
.ifr_flags
&= ~rem
;
357 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
369 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
371 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
373 return ifa
->ifa_index
== ifindex
;
376 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
378 struct nlattr
*tb
[__RTA_MAX
];
380 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
384 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
387 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
389 struct clear_data
*clr
= arg
;
390 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
391 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
397 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
404 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
413 if (!cb(hdr
, clr
->dev
->ifindex
))
416 D(SYSTEM
, "Remove %s from device %s\n",
417 type
== RTM_DELADDR
? "an address" : "a route",
419 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
420 hdr
= nlmsg_hdr(clr
->msg
);
421 hdr
->nlmsg_type
= type
;
422 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
424 if (!nl_send_auto_complete(sock_rtnl
, clr
->msg
))
425 nl_wait_for_ack(sock_rtnl
);
431 cb_finish_event(struct nl_msg
*msg
, void *arg
)
439 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
442 *pending
= err
->error
;
447 system_if_clear_entries(struct device
*dev
, int type
, int af
)
449 struct clear_data clr
;
450 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
453 .rtm_flags
= RTM_F_CLONED
,
455 int flags
= NLM_F_DUMP
;
463 clr
.size
= sizeof(struct rtgenmsg
);
466 clr
.size
= sizeof(struct rtmsg
);
475 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
479 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
480 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
481 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
482 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
484 nl_send_auto_complete(sock_rtnl
, clr
.msg
);
486 nl_recvmsgs(sock_rtnl
, cb
);
494 * Clear bridge (membership) state and bring down device
496 void system_if_clear_state(struct device
*dev
)
498 static char buf
[256];
504 dev
->ifindex
= system_if_resolve(dev
);
508 system_if_flags(dev
->ifname
, 0, IFF_UP
);
510 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
511 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
512 system_bridge_delbr(dev
);
516 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
518 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
519 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
522 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
523 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
524 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
525 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
526 system_set_disable_ipv6(dev
, "0");
529 static inline unsigned long
530 sec_to_jiffies(int val
)
532 return (unsigned long) val
* 100;
535 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
537 unsigned long args
[4] = {};
539 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
542 args
[0] = BRCTL_SET_BRIDGE_STP_STATE
;
543 args
[1] = !!cfg
->stp
;
544 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
546 args
[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY
;
547 args
[1] = sec_to_jiffies(cfg
->forward_delay
);
548 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
550 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
551 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
553 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
554 args
[0] = BRCTL_SET_AGEING_TIME
;
555 args
[1] = sec_to_jiffies(cfg
->ageing_time
);
556 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
559 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
560 args
[0] = BRCTL_SET_BRIDGE_HELLO_TIME
;
561 args
[1] = sec_to_jiffies(cfg
->hello_time
);
562 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
565 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
566 args
[0] = BRCTL_SET_BRIDGE_MAX_AGE
;
567 args
[1] = sec_to_jiffies(cfg
->max_age
);
568 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
574 static int system_vlan(struct device
*dev
, int id
)
576 struct vlan_ioctl_args ifr
= {
577 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
578 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
581 ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
584 ifr
.cmd
= DEL_VLAN_CMD
;
587 ifr
.cmd
= ADD_VLAN_CMD
;
590 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
591 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
594 int system_vlan_add(struct device
*dev
, int id
)
596 return system_vlan(dev
, id
);
599 int system_vlan_del(struct device
*dev
)
601 return system_vlan(dev
, -1);
605 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
609 memset(&ifr
, 0, sizeof(ifr
));
610 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
612 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
613 s
->mtu
= ifr
.ifr_mtu
;
614 s
->flags
|= DEV_OPT_MTU
;
617 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
618 s
->txqueuelen
= ifr
.ifr_qlen
;
619 s
->flags
|= DEV_OPT_TXQUEUELEN
;
622 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
623 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
624 s
->flags
|= DEV_OPT_MACADDR
;
629 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
)
633 memset(&ifr
, 0, sizeof(ifr
));
634 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
635 if (s
->flags
& DEV_OPT_MTU
) {
636 ifr
.ifr_mtu
= s
->mtu
;
637 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
638 s
->flags
&= ~DEV_OPT_MTU
;
640 if (s
->flags
& DEV_OPT_TXQUEUELEN
) {
641 ifr
.ifr_qlen
= s
->txqueuelen
;
642 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
643 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
645 if (s
->flags
& DEV_OPT_MACADDR
) {
646 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
647 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
648 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
649 s
->flags
&= ~DEV_OPT_MACADDR
;
653 int system_if_up(struct device
*dev
)
655 system_if_get_settings(dev
, &dev
->orig_settings
);
656 system_if_apply_settings(dev
, &dev
->settings
);
657 dev
->ifindex
= system_if_resolve(dev
);
658 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
661 int system_if_down(struct device
*dev
)
663 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
664 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
665 system_if_apply_settings(dev
, &dev
->orig_settings
);
669 int system_if_check(struct device
*dev
)
671 device_set_present(dev
, (system_if_resolve(dev
) > 0));
676 system_if_get_parent(struct device
*dev
)
678 char buf
[64], *devname
;
679 int ifindex
, iflink
, len
;
682 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
687 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
694 iflink
= strtoul(buf
, NULL
, 0);
695 ifindex
= system_if_resolve(dev
);
696 if (!iflink
|| iflink
== ifindex
)
699 devname
= if_indextoname(iflink
, buf
);
703 return device_get(devname
, true);
707 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
713 fd
= openat(dir_fd
, file
, O_RDONLY
);
718 len
= read(fd
, buf
, len
- 1);
722 } else if (len
> 0) {
725 c
= strchr(buf
, '\n');
738 read_int_file(int dir_fd
, const char *file
, int *val
)
743 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
745 *val
= strtoul(buf
, NULL
, 0);
750 /* Assume advertised flags == supported flags */
751 static const struct {
754 } ethtool_link_modes
[] = {
755 { ADVERTISED_10baseT_Half
, "10H" },
756 { ADVERTISED_10baseT_Full
, "10F" },
757 { ADVERTISED_100baseT_Half
, "100H" },
758 { ADVERTISED_100baseT_Full
, "100F" },
759 { ADVERTISED_1000baseT_Half
, "1000H" },
760 { ADVERTISED_1000baseT_Full
, "1000F" },
763 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
766 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
767 if (mask
& ethtool_link_modes
[i
].mask
)
768 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
773 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
775 struct ethtool_cmd ecmd
;
781 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s", dev
->ifname
);
782 dir_fd
= open(buf
, O_DIRECTORY
);
784 if (read_int_file(dir_fd
, "carrier", &val
))
785 blobmsg_add_u8(b
, "link", !!val
);
787 memset(&ecmd
, 0, sizeof(ecmd
));
788 memset(&ifr
, 0, sizeof(ifr
));
789 strcpy(ifr
.ifr_name
, dev
->ifname
);
790 ifr
.ifr_data
= (caddr_t
) &ecmd
;
791 ecmd
.cmd
= ETHTOOL_GSET
;
793 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
794 c
= blobmsg_open_array(b
, "link-advertising");
795 system_add_link_modes(b
, ecmd
.advertising
);
796 blobmsg_close_array(b
, c
);
798 c
= blobmsg_open_array(b
, "link-supported");
799 system_add_link_modes(b
, ecmd
.supported
);
800 blobmsg_close_array(b
, c
);
802 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
803 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
804 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
805 blobmsg_add_string_buffer(b
);
813 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
815 const char *const counters
[] = {
816 "collisions", "rx_frame_errors", "tx_compressed",
817 "multicast", "rx_length_errors", "tx_dropped",
818 "rx_bytes", "rx_missed_errors", "tx_errors",
819 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
820 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
821 "rx_dropped", "tx_aborted_errors", "tx_packets",
822 "rx_errors", "tx_bytes", "tx_window_errors",
823 "rx_fifo_errors", "tx_carrier_errors",
829 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
830 stats_dir
= open(buf
, O_DIRECTORY
);
834 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
835 if (read_int_file(stats_dir
, counters
[i
], &val
))
836 blobmsg_add_u32(b
, counters
[i
], val
);
842 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
844 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
845 int alen
= v4
? 4 : 16;
846 struct ifaddrmsg ifa
= {
847 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
848 .ifa_prefixlen
= addr
->mask
,
849 .ifa_index
= dev
->ifindex
,
854 msg
= nlmsg_alloc_simple(cmd
, 0);
858 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
859 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
862 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
863 if (addr
->point_to_point
)
864 nla_put_u32(msg
, IFA_ADDRESS
, addr
->point_to_point
);
867 return system_rtnl_call(msg
);
870 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
872 return system_addr(dev
, addr
, RTM_NEWADDR
);
875 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
877 return system_addr(dev
, addr
, RTM_DELADDR
);
880 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
882 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
884 unsigned int flags
= 0;
885 int ifindex
= dev
->ifindex
;
888 have_gw
= !!route
->nexthop
.in
.s_addr
;
890 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
891 route
->nexthop
.in6
.s6_addr32
[1] ||
892 route
->nexthop
.in6
.s6_addr32
[2] ||
893 route
->nexthop
.in6
.s6_addr32
[3];
895 unsigned char scope
= (cmd
== RTM_DELROUTE
) ? RT_SCOPE_NOWHERE
:
896 (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
899 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
900 .rtm_dst_len
= route
->mask
,
901 .rtm_table
= RT_TABLE_MAIN
,
902 .rtm_protocol
= (route
->flags
& DEVADDR_KERNEL
) ? RTPROT_KERNEL
: RTPROT_BOOT
,
904 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
908 if (cmd
== RTM_NEWROUTE
)
909 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
911 msg
= nlmsg_alloc_simple(cmd
, flags
);
915 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
918 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
920 if (route
->metric
> 0)
921 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
924 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
926 nla_put_u32(msg
, RTA_OIF
, ifindex
);
928 return system_rtnl_call(msg
);
931 int system_add_route(struct device
*dev
, struct device_route
*route
)
933 return system_rt(dev
, route
, RTM_NEWROUTE
);
936 int system_del_route(struct device
*dev
, struct device_route
*route
)
938 return system_rt(dev
, route
, RTM_DELROUTE
);
941 int system_flush_routes(void)
943 const char *names
[] = {
944 "/proc/sys/net/ipv4/route/flush",
945 "/proc/sys/net/ipv6/route/flush"
949 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
950 fd
= open(names
[i
], O_WRONLY
);
960 time_t system_get_rtime(void)
965 if (syscall(__NR_clock_gettime
, CLOCK_MONOTONIC
, &ts
) == 0)
968 if (gettimeofday(&tv
, NULL
) == 0)
978 static void tunnel_parm_init(struct ip_tunnel_parm
*p
)
980 memset(p
, 0, sizeof(*p
));
983 p
->iph
.frag_off
= htons(IP_DF
);
986 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
990 memset(&ifr
, 0, sizeof(ifr
));
991 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
));
992 ifr
.ifr_ifru
.ifru_data
= p
;
993 return ioctl(sock_ioctl
, cmd
, &ifr
);
996 int system_del_ip_tunnel(const char *name
)
998 struct ip_tunnel_parm p
;
1000 tunnel_parm_init(&p
);
1001 return tunnel_ioctl(name
, SIOCDELTUNNEL
, &p
);
1004 static int parse_ipaddr(struct blob_attr
*attr
, __be32
*addr
)
1009 return inet_pton(AF_INET
, blobmsg_data(attr
), (void *) addr
);
1013 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
1015 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
1016 struct blob_attr
*cur
;
1017 struct ip_tunnel_parm p
;
1018 const char *base
, *str
;
1019 int cmd
= SIOCADDTUNNEL
;
1021 system_del_ip_tunnel(name
);
1023 tunnel_parm_init(&p
);
1025 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
1026 blob_data(attr
), blob_len(attr
));
1028 cur
= tb
[TUNNEL_ATTR_TYPE
];
1032 str
= blobmsg_data(cur
);
1033 if (!strcmp(str
, "sit")) {
1034 p
.iph
.protocol
= IPPROTO_IPV6
;
1039 if (!parse_ipaddr(tb
[TUNNEL_ATTR_LOCAL
], &p
.iph
.saddr
))
1042 if (!parse_ipaddr(tb
[TUNNEL_ATTR_REMOTE
], &p
.iph
.daddr
))
1045 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
1046 unsigned int val
= blobmsg_get_u32(cur
);
1054 strncpy(p
.name
, name
, sizeof(p
.name
));
1055 return tunnel_ioctl(base
, cmd
, &p
);