3 #include <sys/socket.h>
6 #include <sys/syscall.h>
9 #include <net/if_arp.h>
11 #include <arpa/inet.h>
12 #include <netinet/in.h>
14 #include <linux/rtnetlink.h>
15 #include <linux/sockios.h>
17 #include <linux/if_vlan.h>
18 #include <linux/if_bridge.h>
19 #include <linux/if_tunnel.h>
20 #include <linux/ethtool.h>
28 #include <netlink/msg.h>
29 #include <netlink/attr.h>
30 #include <netlink/socket.h>
31 #include <libubox/uloop.h>
38 struct uloop_fd uloop
;
43 static int sock_ioctl
= -1;
44 static struct nl_sock
*sock_rtnl
= NULL
;
46 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
);
47 static void handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
);
49 static char dev_buf
[256];
52 handler_nl_event(struct uloop_fd
*u
, unsigned int events
)
54 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
55 nl_recvmsgs(ev
->sock
, ev
->cb
);
58 static struct nl_sock
*
59 create_socket(int protocol
, int groups
)
63 sock
= nl_socket_alloc();
68 nl_join_groups(sock
, groups
);
70 if (nl_connect(sock
, protocol
))
77 create_raw_event_socket(struct event_socket
*ev
, int protocol
, int groups
,
80 ev
->sock
= create_socket(protocol
, groups
);
84 ev
->uloop
.fd
= nl_socket_get_fd(ev
->sock
);
86 uloop_fd_add(&ev
->uloop
, ULOOP_READ
| ULOOP_EDGE_TRIGGER
);
91 create_event_socket(struct event_socket
*ev
, int protocol
,
92 int (*cb
)(struct nl_msg
*msg
, void *arg
))
94 // Prepare socket for link events
95 ev
->cb
= nl_cb_alloc(NL_CB_DEFAULT
);
99 nl_cb_set(ev
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, NULL
);
101 return create_raw_event_socket(ev
, protocol
, 0, handler_nl_event
);
104 int system_init(void)
106 static struct event_socket rtnl_event
;
107 static struct event_socket hotplug_event
;
109 sock_ioctl
= socket(AF_LOCAL
, SOCK_DGRAM
, 0);
110 fcntl(sock_ioctl
, F_SETFD
, fcntl(sock_ioctl
, F_GETFD
) | FD_CLOEXEC
);
112 // Prepare socket for routing / address control
113 sock_rtnl
= create_socket(NETLINK_ROUTE
, 0);
117 if (!create_event_socket(&rtnl_event
, NETLINK_ROUTE
, cb_rtnl_event
))
120 if (!create_raw_event_socket(&hotplug_event
, NETLINK_KOBJECT_UEVENT
, 1,
121 handle_hotplug_event
))
124 // Receive network link events form kernel
125 nl_socket_add_membership(rtnl_event
.sock
, RTNLGRP_LINK
);
130 static void system_set_sysctl(const char *path
, const char *val
)
134 fd
= open(path
, O_WRONLY
);
138 write(fd
, val
, strlen(val
));
142 static void system_set_dev_sysctl(const char *path
, const char *device
, const char *val
)
144 snprintf(dev_buf
, sizeof(dev_buf
), path
, val
);
145 system_set_sysctl(dev_buf
, val
);
148 static void system_set_disable_ipv6(struct device
*dev
, const char *val
)
150 system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev
->ifname
, val
);
153 // Evaluate netlink messages
154 static int cb_rtnl_event(struct nl_msg
*msg
, void *arg
)
156 struct nlmsghdr
*nh
= nlmsg_hdr(msg
);
157 struct ifinfomsg
*ifi
= NLMSG_DATA(nh
);
158 struct nlattr
*nla
[__IFLA_MAX
];
160 if (nh
->nlmsg_type
!= RTM_DELLINK
&& nh
->nlmsg_type
!= RTM_NEWLINK
)
163 nlmsg_parse(nh
, sizeof(*ifi
), nla
, __IFLA_MAX
- 1, NULL
);
164 if (!nla
[IFLA_IFNAME
])
167 struct device
*dev
= device_get(RTA_DATA(nla
[IFLA_IFNAME
]), false);
171 dev
->ifindex
= ifi
->ifi_index
;
172 /* TODO: parse link status */
179 handle_hotplug_msg(char *data
, int size
)
181 const char *subsystem
= NULL
, *interface
= NULL
;
182 char *cur
, *end
, *sep
;
187 if (!strncmp(data
, "add@", 4))
189 else if (!strncmp(data
, "remove@", 7))
194 skip
= strlen(data
) + 1;
197 for (cur
= data
+ skip
; cur
< end
; cur
+= skip
) {
198 skip
= strlen(cur
) + 1;
200 sep
= strchr(cur
, '=');
205 if (!strcmp(cur
, "INTERFACE"))
207 else if (!strcmp(cur
, "SUBSYSTEM")) {
209 if (strcmp(subsystem
, "net") != 0)
212 if (subsystem
&& interface
)
218 dev
= device_get(interface
, false);
222 if (dev
->type
!= &simple_device_type
)
225 device_set_present(dev
, add
);
229 handle_hotplug_event(struct uloop_fd
*u
, unsigned int events
)
231 struct event_socket
*ev
= container_of(u
, struct event_socket
, uloop
);
232 struct sockaddr_nl nla
;
233 unsigned char *buf
= NULL
;
236 while ((size
= nl_recv(ev
->sock
, &nla
, &buf
, NULL
)) > 0) {
238 handle_hotplug_msg((char *) buf
, size
);
244 static int system_rtnl_call(struct nl_msg
*msg
)
248 ret
= nl_send_auto_complete(sock_rtnl
, msg
);
254 return nl_wait_for_ack(sock_rtnl
);
257 int system_bridge_delbr(struct device
*bridge
)
259 return ioctl(sock_ioctl
, SIOCBRDELBR
, bridge
->ifname
);
262 static int system_bridge_if(const char *bridge
, struct device
*dev
, int cmd
, void *data
)
266 ifr
.ifr_ifindex
= dev
->ifindex
;
269 strncpy(ifr
.ifr_name
, bridge
, sizeof(ifr
.ifr_name
));
270 return ioctl(sock_ioctl
, cmd
, &ifr
);
273 static bool system_is_bridge(const char *name
, char *buf
, int buflen
)
277 snprintf(buf
, buflen
, "/sys/devices/virtual/net/%s/bridge", name
);
278 if (stat(buf
, &st
) < 0)
284 static char *system_get_bridge(const char *name
, char *buf
, int buflen
)
290 snprintf(buf
, buflen
, "/sys/devices/virtual/net/*/brif/%s/bridge", name
);
291 if (glob(buf
, GLOB_NOSORT
, NULL
, &gl
) < 0)
294 if (gl
.gl_pathc
== 0)
297 len
= readlink(gl
.gl_pathv
[0], buf
, buflen
);
302 path
= strrchr(buf
, '/');
309 int system_bridge_addif(struct device
*bridge
, struct device
*dev
)
313 system_set_disable_ipv6(dev
, "1");
314 oldbr
= system_get_bridge(dev
->ifname
, dev_buf
, sizeof(dev_buf
));
315 if (oldbr
&& !strcmp(oldbr
, bridge
->ifname
))
318 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRADDIF
, NULL
);
321 int system_bridge_delif(struct device
*bridge
, struct device
*dev
)
323 system_set_disable_ipv6(dev
, "0");
324 return system_bridge_if(bridge
->ifname
, dev
, SIOCBRDELIF
, NULL
);
327 static int system_if_resolve(struct device
*dev
)
330 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
331 if (!ioctl(sock_ioctl
, SIOCGIFINDEX
, &ifr
))
332 return ifr
.ifr_ifindex
;
337 static int system_if_flags(const char *ifname
, unsigned add
, unsigned rem
)
340 strncpy(ifr
.ifr_name
, ifname
, sizeof(ifr
.ifr_name
));
341 ioctl(sock_ioctl
, SIOCGIFFLAGS
, &ifr
);
342 ifr
.ifr_flags
|= add
;
343 ifr
.ifr_flags
&= ~rem
;
344 return ioctl(sock_ioctl
, SIOCSIFFLAGS
, &ifr
);
356 static bool check_ifaddr(struct nlmsghdr
*hdr
, int ifindex
)
358 struct ifaddrmsg
*ifa
= NLMSG_DATA(hdr
);
360 return ifa
->ifa_index
== ifindex
;
363 static bool check_route(struct nlmsghdr
*hdr
, int ifindex
)
365 struct nlattr
*tb
[__RTA_MAX
];
367 nlmsg_parse(hdr
, sizeof(struct rtmsg
), tb
, __RTA_MAX
- 1, NULL
);
371 return *(int *)RTA_DATA(tb
[RTA_OIF
]) == ifindex
;
374 static int cb_clear_event(struct nl_msg
*msg
, void *arg
)
376 struct clear_data
*clr
= arg
;
377 struct nlmsghdr
*hdr
= nlmsg_hdr(msg
);
378 bool (*cb
)(struct nlmsghdr
*, int ifindex
);
384 if (hdr
->nlmsg_type
!= RTM_NEWADDR
)
391 if (hdr
->nlmsg_type
!= RTM_NEWROUTE
)
400 if (!cb(hdr
, clr
->dev
->ifindex
))
403 D(SYSTEM
, "Remove %s from device %s\n",
404 type
== RTM_DELADDR
? "an address" : "a route",
406 memcpy(nlmsg_hdr(clr
->msg
), hdr
, hdr
->nlmsg_len
);
407 hdr
= nlmsg_hdr(clr
->msg
);
408 hdr
->nlmsg_type
= type
;
409 hdr
->nlmsg_flags
= NLM_F_REQUEST
;
411 if (!nl_send_auto_complete(sock_rtnl
, clr
->msg
))
412 nl_wait_for_ack(sock_rtnl
);
418 cb_finish_event(struct nl_msg
*msg
, void *arg
)
426 error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
, void *arg
)
429 *pending
= err
->error
;
434 system_if_clear_entries(struct device
*dev
, int type
, int af
)
436 struct clear_data clr
;
437 struct nl_cb
*cb
= nl_cb_alloc(NL_CB_DEFAULT
);
440 .rtm_flags
= RTM_F_CLONED
,
442 int flags
= NLM_F_DUMP
;
450 clr
.size
= sizeof(struct rtgenmsg
);
453 clr
.size
= sizeof(struct rtmsg
);
462 clr
.msg
= nlmsg_alloc_simple(type
, flags
);
466 nlmsg_append(clr
.msg
, &rtm
, clr
.size
, 0);
467 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_clear_event
, &clr
);
468 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, cb_finish_event
, &pending
);
469 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &pending
);
471 nl_send_auto_complete(sock_rtnl
, clr
.msg
);
473 nl_recvmsgs(sock_rtnl
, cb
);
481 * Clear bridge (membership) state and bring down device
483 void system_if_clear_state(struct device
*dev
)
485 static char buf
[256];
491 dev
->ifindex
= system_if_resolve(dev
);
495 system_if_flags(dev
->ifname
, 0, IFF_UP
);
497 if (system_is_bridge(dev
->ifname
, buf
, sizeof(buf
))) {
498 D(SYSTEM
, "Delete existing bridge named '%s'\n", dev
->ifname
);
499 system_bridge_delbr(dev
);
503 bridge
= system_get_bridge(dev
->ifname
, buf
, sizeof(buf
));
505 D(SYSTEM
, "Remove device '%s' from bridge '%s'\n", dev
->ifname
, bridge
);
506 system_bridge_if(bridge
, dev
, SIOCBRDELIF
, NULL
);
509 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET
);
510 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET
);
511 system_if_clear_entries(dev
, RTM_GETROUTE
, AF_INET6
);
512 system_if_clear_entries(dev
, RTM_GETADDR
, AF_INET6
);
513 system_set_disable_ipv6(dev
, "0");
516 static inline unsigned long
517 sec_to_jiffies(int val
)
519 return (unsigned long) val
* 100;
522 int system_bridge_addbr(struct device
*bridge
, struct bridge_config
*cfg
)
524 unsigned long args
[4] = {};
526 if (ioctl(sock_ioctl
, SIOCBRADDBR
, bridge
->ifname
) < 0)
529 args
[0] = BRCTL_SET_BRIDGE_STP_STATE
;
530 args
[1] = !!cfg
->stp
;
531 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
533 args
[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY
;
534 args
[1] = sec_to_jiffies(cfg
->forward_delay
);
535 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
537 system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
538 bridge
->ifname
, cfg
->igmp_snoop
? "1" : "0");
540 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
) {
541 args
[0] = BRCTL_SET_AGEING_TIME
;
542 args
[1] = sec_to_jiffies(cfg
->ageing_time
);
543 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
546 if (cfg
->flags
& BRIDGE_OPT_HELLO_TIME
) {
547 args
[0] = BRCTL_SET_BRIDGE_HELLO_TIME
;
548 args
[1] = sec_to_jiffies(cfg
->hello_time
);
549 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
552 if (cfg
->flags
& BRIDGE_OPT_MAX_AGE
) {
553 args
[0] = BRCTL_SET_BRIDGE_MAX_AGE
;
554 args
[1] = sec_to_jiffies(cfg
->max_age
);
555 system_bridge_if(bridge
->ifname
, NULL
, SIOCDEVPRIVATE
, &args
);
561 static int system_vlan(struct device
*dev
, int id
)
563 struct vlan_ioctl_args ifr
= {
564 .cmd
= SET_VLAN_NAME_TYPE_CMD
,
565 .u
.name_type
= VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
,
568 ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
571 ifr
.cmd
= DEL_VLAN_CMD
;
574 ifr
.cmd
= ADD_VLAN_CMD
;
577 strncpy(ifr
.device1
, dev
->ifname
, sizeof(ifr
.device1
));
578 return ioctl(sock_ioctl
, SIOCSIFVLAN
, &ifr
);
581 int system_vlan_add(struct device
*dev
, int id
)
583 return system_vlan(dev
, id
);
586 int system_vlan_del(struct device
*dev
)
588 return system_vlan(dev
, -1);
592 system_if_get_settings(struct device
*dev
, struct device_settings
*s
)
596 memset(&ifr
, 0, sizeof(ifr
));
597 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
599 if (ioctl(sock_ioctl
, SIOCGIFMTU
, &ifr
) == 0) {
600 s
->mtu
= ifr
.ifr_mtu
;
601 s
->flags
|= DEV_OPT_MTU
;
604 if (ioctl(sock_ioctl
, SIOCGIFTXQLEN
, &ifr
) == 0) {
605 s
->txqueuelen
= ifr
.ifr_qlen
;
606 s
->flags
|= DEV_OPT_TXQUEUELEN
;
609 if (ioctl(sock_ioctl
, SIOCGIFHWADDR
, &ifr
) == 0) {
610 memcpy(s
->macaddr
, &ifr
.ifr_hwaddr
.sa_data
, sizeof(s
->macaddr
));
611 s
->flags
|= DEV_OPT_MACADDR
;
616 system_if_apply_settings(struct device
*dev
, struct device_settings
*s
)
620 memset(&ifr
, 0, sizeof(ifr
));
621 strncpy(ifr
.ifr_name
, dev
->ifname
, sizeof(ifr
.ifr_name
));
622 if (s
->flags
& DEV_OPT_MTU
) {
623 ifr
.ifr_mtu
= s
->mtu
;
624 if (ioctl(sock_ioctl
, SIOCSIFMTU
, &ifr
) < 0)
625 s
->flags
&= ~DEV_OPT_MTU
;
627 if (s
->flags
& DEV_OPT_TXQUEUELEN
) {
628 ifr
.ifr_qlen
= s
->txqueuelen
;
629 if (ioctl(sock_ioctl
, SIOCSIFTXQLEN
, &ifr
) < 0)
630 s
->flags
&= ~DEV_OPT_TXQUEUELEN
;
632 if (s
->flags
& DEV_OPT_MACADDR
) {
633 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
634 memcpy(&ifr
.ifr_hwaddr
.sa_data
, s
->macaddr
, sizeof(s
->macaddr
));
635 if (ioctl(sock_ioctl
, SIOCSIFHWADDR
, &ifr
) < 0)
636 s
->flags
&= ~DEV_OPT_MACADDR
;
640 int system_if_up(struct device
*dev
)
642 system_if_get_settings(dev
, &dev
->orig_settings
);
643 system_if_apply_settings(dev
, &dev
->settings
);
644 dev
->ifindex
= system_if_resolve(dev
);
645 return system_if_flags(dev
->ifname
, IFF_UP
, 0);
648 int system_if_down(struct device
*dev
)
650 int ret
= system_if_flags(dev
->ifname
, 0, IFF_UP
);
651 dev
->orig_settings
.flags
&= dev
->settings
.flags
;
652 system_if_apply_settings(dev
, &dev
->orig_settings
);
656 int system_if_check(struct device
*dev
)
658 device_set_present(dev
, (system_if_resolve(dev
) > 0));
663 system_if_get_parent(struct device
*dev
)
665 char buf
[64], *devname
;
666 int ifindex
, iflink
, len
;
669 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/iflink", dev
->ifname
);
674 len
= fread(buf
, 1, sizeof(buf
) - 1, f
);
681 iflink
= strtoul(buf
, NULL
, 0);
682 ifindex
= system_if_resolve(dev
);
683 if (!iflink
|| iflink
== ifindex
)
686 devname
= if_indextoname(iflink
, buf
);
690 return device_get(devname
, true);
694 read_string_file(int dir_fd
, const char *file
, char *buf
, int len
)
700 fd
= openat(dir_fd
, file
, O_RDONLY
);
705 len
= read(fd
, buf
, len
- 1);
709 } else if (len
> 0) {
712 c
= strchr(buf
, '\n');
725 read_int_file(int dir_fd
, const char *file
, int *val
)
730 ret
= read_string_file(dir_fd
, file
, buf
, sizeof(buf
));
732 *val
= strtoul(buf
, NULL
, 0);
737 /* Assume advertised flags == supported flags */
738 static const struct {
741 } ethtool_link_modes
[] = {
742 { ADVERTISED_10baseT_Half
, "10H" },
743 { ADVERTISED_10baseT_Full
, "10F" },
744 { ADVERTISED_100baseT_Half
, "100H" },
745 { ADVERTISED_100baseT_Full
, "100F" },
746 { ADVERTISED_1000baseT_Half
, "1000H" },
747 { ADVERTISED_1000baseT_Full
, "1000F" },
750 static void system_add_link_modes(struct blob_buf
*b
, __u32 mask
)
753 for (i
= 0; i
< ARRAY_SIZE(ethtool_link_modes
); i
++) {
754 if (mask
& ethtool_link_modes
[i
].mask
)
755 blobmsg_add_string(b
, NULL
, ethtool_link_modes
[i
].name
);
760 system_if_dump_info(struct device
*dev
, struct blob_buf
*b
)
762 struct ethtool_cmd ecmd
;
768 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s", dev
->ifname
);
769 dir_fd
= open(buf
, O_DIRECTORY
);
771 if (read_int_file(dir_fd
, "carrier", &val
))
772 blobmsg_add_u8(b
, "link", !!val
);
774 memset(&ecmd
, 0, sizeof(ecmd
));
775 memset(&ifr
, 0, sizeof(ifr
));
776 strcpy(ifr
.ifr_name
, dev
->ifname
);
777 ifr
.ifr_data
= (caddr_t
) &ecmd
;
778 ecmd
.cmd
= ETHTOOL_GSET
;
780 if (ioctl(sock_ioctl
, SIOCETHTOOL
, &ifr
) == 0) {
781 c
= blobmsg_open_array(b
, "link-advertising");
782 system_add_link_modes(b
, ecmd
.advertising
);
783 blobmsg_close_array(b
, c
);
785 c
= blobmsg_open_array(b
, "link-supported");
786 system_add_link_modes(b
, ecmd
.supported
);
787 blobmsg_close_array(b
, c
);
789 s
= blobmsg_alloc_string_buffer(b
, "speed", 8);
790 snprintf(s
, 8, "%d%c", ethtool_cmd_speed(&ecmd
),
791 ecmd
.duplex
== DUPLEX_HALF
? 'H' : 'F');
792 blobmsg_add_string_buffer(b
);
800 system_if_dump_stats(struct device
*dev
, struct blob_buf
*b
)
802 const char *const counters
[] = {
803 "collisions", "rx_frame_errors", "tx_compressed",
804 "multicast", "rx_length_errors", "tx_dropped",
805 "rx_bytes", "rx_missed_errors", "tx_errors",
806 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
807 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
808 "rx_dropped", "tx_aborted_errors", "tx_packets",
809 "rx_errors", "tx_bytes", "tx_window_errors",
810 "rx_fifo_errors", "tx_carrier_errors",
816 snprintf(buf
, sizeof(buf
), "/sys/class/net/%s/statistics", dev
->ifname
);
817 stats_dir
= open(buf
, O_DIRECTORY
);
821 for (i
= 0; i
< ARRAY_SIZE(counters
); i
++)
822 if (read_int_file(stats_dir
, counters
[i
], &val
))
823 blobmsg_add_u32(b
, counters
[i
], val
);
829 static int system_addr(struct device
*dev
, struct device_addr
*addr
, int cmd
)
831 bool v4
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
);
832 int alen
= v4
? 4 : 16;
833 struct ifaddrmsg ifa
= {
834 .ifa_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
835 .ifa_prefixlen
= addr
->mask
,
836 .ifa_index
= dev
->ifindex
,
841 msg
= nlmsg_alloc_simple(cmd
, 0);
845 nlmsg_append(msg
, &ifa
, sizeof(ifa
), 0);
846 nla_put(msg
, IFA_LOCAL
, alen
, &addr
->addr
);
848 nla_put_u32(msg
, IFA_BROADCAST
, addr
->broadcast
);
850 return system_rtnl_call(msg
);
853 int system_add_address(struct device
*dev
, struct device_addr
*addr
)
855 return system_addr(dev
, addr
, RTM_NEWADDR
);
858 int system_del_address(struct device
*dev
, struct device_addr
*addr
)
860 return system_addr(dev
, addr
, RTM_DELADDR
);
863 static int system_rt(struct device
*dev
, struct device_route
*route
, int cmd
)
865 int alen
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) ? 4 : 16;
867 unsigned int flags
= 0;
868 int ifindex
= dev
->ifindex
;
871 have_gw
= !!route
->nexthop
.in
.s_addr
;
873 have_gw
= route
->nexthop
.in6
.s6_addr32
[0] ||
874 route
->nexthop
.in6
.s6_addr32
[1] ||
875 route
->nexthop
.in6
.s6_addr32
[2] ||
876 route
->nexthop
.in6
.s6_addr32
[3];
878 unsigned char scope
= (cmd
== RTM_DELROUTE
) ? RT_SCOPE_NOWHERE
:
879 (have_gw
) ? RT_SCOPE_UNIVERSE
: RT_SCOPE_LINK
;
882 .rtm_family
= (alen
== 4) ? AF_INET
: AF_INET6
,
883 .rtm_dst_len
= route
->mask
,
884 .rtm_table
= RT_TABLE_MAIN
,
885 .rtm_protocol
= RTPROT_BOOT
,
887 .rtm_type
= (cmd
== RTM_DELROUTE
) ? 0: RTN_UNICAST
,
891 if (cmd
== RTM_NEWROUTE
)
892 flags
|= NLM_F_CREATE
| NLM_F_REPLACE
;
894 msg
= nlmsg_alloc_simple(cmd
, flags
);
898 nlmsg_append(msg
, &rtm
, sizeof(rtm
), 0);
901 nla_put(msg
, RTA_DST
, alen
, &route
->addr
);
903 if (route
->metric
> 0)
904 nla_put_u32(msg
, RTA_PRIORITY
, route
->metric
);
907 nla_put(msg
, RTA_GATEWAY
, alen
, &route
->nexthop
);
909 nla_put_u32(msg
, RTA_OIF
, ifindex
);
911 return system_rtnl_call(msg
);
914 int system_add_route(struct device
*dev
, struct device_route
*route
)
916 return system_rt(dev
, route
, RTM_NEWROUTE
);
919 int system_del_route(struct device
*dev
, struct device_route
*route
)
921 return system_rt(dev
, route
, RTM_DELROUTE
);
924 int system_flush_routes(void)
926 const char *names
[] = {
927 "/proc/sys/net/ipv4/route/flush",
928 "/proc/sys/net/ipv6/route/flush"
932 for (i
= 0; i
< ARRAY_SIZE(names
); i
++) {
933 fd
= open(names
[i
], O_WRONLY
);
943 time_t system_get_rtime(void)
948 if (syscall(__NR_clock_gettime
, CLOCK_MONOTONIC
, &ts
) == 0)
951 if (gettimeofday(&tv
, NULL
) == 0)
961 static void tunnel_parm_init(struct ip_tunnel_parm
*p
)
963 memset(p
, 0, sizeof(*p
));
966 p
->iph
.frag_off
= htons(IP_DF
);
969 static int tunnel_ioctl(const char *name
, int cmd
, void *p
)
973 memset(&ifr
, 0, sizeof(ifr
));
974 strncpy(ifr
.ifr_name
, name
, sizeof(ifr
.ifr_name
));
975 ifr
.ifr_ifru
.ifru_data
= p
;
976 return ioctl(sock_ioctl
, cmd
, &ifr
);
979 int system_del_ip_tunnel(const char *name
)
981 struct ip_tunnel_parm p
;
983 tunnel_parm_init(&p
);
984 return tunnel_ioctl(name
, SIOCDELTUNNEL
, &p
);
987 static int parse_ipaddr(struct blob_attr
*attr
, __be32
*addr
)
992 return inet_pton(AF_INET
, blobmsg_data(attr
), (void *) addr
);
996 int system_add_ip_tunnel(const char *name
, struct blob_attr
*attr
)
998 struct blob_attr
*tb
[__TUNNEL_ATTR_MAX
];
999 struct blob_attr
*cur
;
1000 struct ip_tunnel_parm p
;
1001 const char *base
, *str
;
1002 int cmd
= SIOCADDTUNNEL
;
1004 system_del_ip_tunnel(name
);
1006 tunnel_parm_init(&p
);
1008 blobmsg_parse(tunnel_attr_list
.params
, __TUNNEL_ATTR_MAX
, tb
,
1009 blob_data(attr
), blob_len(attr
));
1011 cur
= tb
[TUNNEL_ATTR_TYPE
];
1015 str
= blobmsg_data(cur
);
1016 if (!strcmp(str
, "sit")) {
1017 p
.iph
.protocol
= IPPROTO_IPV6
;
1022 if (!parse_ipaddr(tb
[TUNNEL_ATTR_LOCAL
], &p
.iph
.saddr
))
1025 if (!parse_ipaddr(tb
[TUNNEL_ATTR_REMOTE
], &p
.iph
.daddr
))
1028 if ((cur
= tb
[TUNNEL_ATTR_TTL
])) {
1029 unsigned int val
= blobmsg_get_u32(cur
);
1037 strncpy(p
.name
, name
, sizeof(p
.name
));
1038 return tunnel_ioctl(base
, cmd
, &p
);