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system-linux: refresh MAC address on DSA port conduit change
[project/netifd.git] / system-linux.c
1 /*
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>
7 * Copyright (C) 2017 Matthias Schiffer <mschiffer@universe-factory.net>
8 * Copyright (C) 2018 Hans Dedecker <dedeckeh@gmail.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2
12 * as published by the Free Software Foundation
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 */
19 #define _GNU_SOURCE
20
21 #include <sys/socket.h>
22 #include <sys/ioctl.h>
23 #include <sys/stat.h>
24 #include <sys/syscall.h>
25
26 #include <net/if.h>
27 #include <net/if_arp.h>
28
29 #include <limits.h>
30 #include <arpa/inet.h>
31 #include <netinet/in.h>
32 #include <netinet/ether.h>
33
34 #include <linux/rtnetlink.h>
35 #include <linux/neighbour.h>
36 #include <linux/sockios.h>
37 #include <linux/ip.h>
38 #include <linux/if_addr.h>
39 #include <linux/if_link.h>
40 #include <linux/if_vlan.h>
41 #include <linux/if_bridge.h>
42 #include <linux/if_tunnel.h>
43 #include <linux/ip6_tunnel.h>
44 #include <linux/ethtool.h>
45 #include <linux/fib_rules.h>
46 #include <linux/veth.h>
47 #include <linux/version.h>
48
49 #include <sched.h>
50
51 #include "ethtool-modes.h"
52
53 #ifndef RTN_FAILED_POLICY
54 #define RTN_FAILED_POLICY 12
55 #endif
56
57 #ifndef IFA_F_NOPREFIXROUTE
58 #define IFA_F_NOPREFIXROUTE 0x200
59 #endif
60
61 #ifndef IFA_FLAGS
62 #define IFA_FLAGS (IFA_MULTICAST + 1)
63 #endif
64
65 #include <string.h>
66 #include <fcntl.h>
67 #include <glob.h>
68 #include <time.h>
69 #include <unistd.h>
70
71 #include <netlink/msg.h>
72 #include <netlink/attr.h>
73 #include <netlink/socket.h>
74 #include <libubox/uloop.h>
75
76 #include "netifd.h"
77 #include "device.h"
78 #include "system.h"
79 #include "utils.h"
80
81 struct event_socket {
82 struct uloop_fd uloop;
83 struct nl_sock *sock;
84 int bufsize;
85 };
86
87 static int sock_ioctl = -1;
88 static struct nl_sock *sock_rtnl = NULL;
89
90 static int cb_rtnl_event(struct nl_msg *msg, void *arg);
91 static void handle_hotplug_event(struct uloop_fd *u, unsigned int events);
92 static int system_add_proto_tunnel(const char *name, const uint8_t proto,
93 const unsigned int link, struct blob_attr **tb);
94
95 static char dev_buf[256];
96 static const char *proc_path = "/proc";
97 static const char *sysfs_path = "/sys";
98
99 struct netdev_type {
100 unsigned short id;
101 const char *name;
102 };
103
104 static const struct netdev_type netdev_types[] = {
105 {ARPHRD_NETROM, "netrom"},
106 {ARPHRD_ETHER, "ethernet"},
107 {ARPHRD_EETHER, "eethernet"},
108 {ARPHRD_AX25, "ax25"},
109 {ARPHRD_PRONET, "pronet"},
110 {ARPHRD_CHAOS, "chaos"},
111 {ARPHRD_IEEE802, "ieee802"},
112 {ARPHRD_ARCNET, "arcnet"},
113 {ARPHRD_APPLETLK, "appletlk"},
114 {ARPHRD_DLCI, "dlci"},
115 {ARPHRD_ATM, "atm"},
116 {ARPHRD_METRICOM, "metricom"},
117 {ARPHRD_IEEE1394, "ieee1394"},
118 {ARPHRD_EUI64, "eui64"},
119 {ARPHRD_INFINIBAND, "infiniband"},
120 {ARPHRD_SLIP, "slip"},
121 {ARPHRD_CSLIP, "cslip"},
122 {ARPHRD_SLIP6, "slip6"},
123 {ARPHRD_CSLIP6, "cslip6"},
124 {ARPHRD_RSRVD, "rsrvd"},
125 {ARPHRD_ADAPT, "adapt"},
126 {ARPHRD_ROSE, "rose"},
127 {ARPHRD_X25, "x25"},
128 {ARPHRD_HWX25, "hwx25"},
129 {ARPHRD_PPP, "ppp"},
130 {ARPHRD_CISCO, "cisco"},
131 {ARPHRD_LAPB, "lapb"},
132 {ARPHRD_DDCMP, "ddcmp"},
133 {ARPHRD_RAWHDLC, "rawhdlc"},
134 {ARPHRD_TUNNEL, "tunnel"},
135 {ARPHRD_TUNNEL6, "tunnel6"},
136 {ARPHRD_FRAD, "frad"},
137 {ARPHRD_SKIP, "skip"},
138 {ARPHRD_LOOPBACK, "loopback"},
139 {ARPHRD_LOCALTLK, "localtlk"},
140 {ARPHRD_FDDI, "fddi"},
141 {ARPHRD_BIF, "bif"},
142 {ARPHRD_SIT, "sit"},
143 {ARPHRD_IPDDP, "ipddp"},
144 {ARPHRD_IPGRE, "ipgre"},
145 {ARPHRD_PIMREG,"pimreg"},
146 {ARPHRD_HIPPI, "hippi"},
147 {ARPHRD_ASH, "ash"},
148 {ARPHRD_ECONET, "econet"},
149 {ARPHRD_IRDA, "irda"},
150 {ARPHRD_FCPP, "fcpp"},
151 {ARPHRD_FCAL, "fcal"},
152 {ARPHRD_FCPL, "fcpl"},
153 {ARPHRD_FCFABRIC, "fcfabric"},
154 {ARPHRD_IEEE80211, "ieee80211"},
155 {ARPHRD_IEEE80211_PRISM, "ie80211-prism"},
156 {ARPHRD_IEEE80211_RADIOTAP, "ieee80211-radiotap"},
157 #ifdef ARPHRD_PHONET
158 {ARPHRD_PHONET, "phonet"},
159 #endif
160 #ifdef ARPHRD_PHONET_PIPE
161 {ARPHRD_PHONET_PIPE, "phonet-pipe"},
162 #endif
163 {ARPHRD_IEEE802154, "ieee802154"},
164 {ARPHRD_VOID, "void"},
165 {ARPHRD_NONE, "none"}
166 };
167
168 static void
169 handler_nl_event(struct uloop_fd *u, unsigned int events)
170 {
171 struct event_socket *ev = container_of(u, struct event_socket, uloop);
172 int err;
173 socklen_t errlen = sizeof(err);
174
175 if (!u->error) {
176 nl_recvmsgs_default(ev->sock);
177 return;
178 }
179
180 if (getsockopt(u->fd, SOL_SOCKET, SO_ERROR, (void *)&err, &errlen))
181 goto abort;
182
183 switch(err) {
184 case ENOBUFS:
185 /* Increase rx buffer size on netlink socket */
186 ev->bufsize *= 2;
187 if (nl_socket_set_buffer_size(ev->sock, ev->bufsize, 0))
188 goto abort;
189
190 /* Request full dump since some info got dropped */
191 struct rtgenmsg msg = { .rtgen_family = AF_UNSPEC };
192 nl_send_simple(ev->sock, RTM_GETLINK, NLM_F_DUMP, &msg, sizeof(msg));
193 break;
194
195 default:
196 goto abort;
197 }
198 u->error = false;
199 return;
200
201 abort:
202 uloop_fd_delete(&ev->uloop);
203 return;
204 }
205
206 static struct nl_sock *
207 create_socket(int protocol, int groups)
208 {
209 struct nl_sock *sock;
210
211 sock = nl_socket_alloc();
212 if (!sock)
213 return NULL;
214
215 if (groups)
216 nl_join_groups(sock, groups);
217
218 if (nl_connect(sock, protocol)) {
219 nl_socket_free(sock);
220 return NULL;
221 }
222
223 return sock;
224 }
225
226 static bool
227 create_raw_event_socket(struct event_socket *ev, int protocol, int groups,
228 uloop_fd_handler cb, int flags)
229 {
230 ev->sock = create_socket(protocol, groups);
231 if (!ev->sock)
232 return false;
233
234 ev->uloop.fd = nl_socket_get_fd(ev->sock);
235 ev->uloop.cb = cb;
236 if (uloop_fd_add(&ev->uloop, ULOOP_READ|flags))
237 return false;
238
239 return true;
240 }
241
242 static bool
243 create_event_socket(struct event_socket *ev, int protocol,
244 int (*cb)(struct nl_msg *msg, void *arg))
245 {
246 if (!create_raw_event_socket(ev, protocol, 0, handler_nl_event, ULOOP_ERROR_CB))
247 return false;
248
249 /* Install the valid custom callback handler */
250 nl_socket_modify_cb(ev->sock, NL_CB_VALID, NL_CB_CUSTOM, cb, NULL);
251
252 /* Disable sequence number checking on event sockets */
253 nl_socket_disable_seq_check(ev->sock);
254
255 /* Increase rx buffer size to 65K on event sockets */
256 ev->bufsize = 65535;
257 if (nl_socket_set_buffer_size(ev->sock, ev->bufsize, 0))
258 return false;
259
260 return true;
261 }
262
263 static bool
264 create_hotplug_event_socket(struct event_socket *ev, int protocol,
265 void (*cb)(struct uloop_fd *u, unsigned int events))
266 {
267 if (!create_raw_event_socket(ev, protocol, 1, cb, ULOOP_ERROR_CB))
268 return false;
269
270 /* Increase rx buffer size to 65K on event sockets */
271 ev->bufsize = 65535;
272 if (nl_socket_set_buffer_size(ev->sock, ev->bufsize, 0))
273 return false;
274
275 return true;
276 }
277
278 static bool
279 system_rtn_aton(const char *src, unsigned int *dst)
280 {
281 char *e;
282 unsigned int n;
283
284 if (!strcmp(src, "local"))
285 n = RTN_LOCAL;
286 else if (!strcmp(src, "nat"))
287 n = RTN_NAT;
288 else if (!strcmp(src, "broadcast"))
289 n = RTN_BROADCAST;
290 else if (!strcmp(src, "anycast"))
291 n = RTN_ANYCAST;
292 else if (!strcmp(src, "multicast"))
293 n = RTN_MULTICAST;
294 else if (!strcmp(src, "prohibit"))
295 n = RTN_PROHIBIT;
296 else if (!strcmp(src, "unreachable"))
297 n = RTN_UNREACHABLE;
298 else if (!strcmp(src, "blackhole"))
299 n = RTN_BLACKHOLE;
300 else if (!strcmp(src, "xresolve"))
301 n = RTN_XRESOLVE;
302 else if (!strcmp(src, "unicast"))
303 n = RTN_UNICAST;
304 else if (!strcmp(src, "throw"))
305 n = RTN_THROW;
306 else if (!strcmp(src, "failed_policy"))
307 n = RTN_FAILED_POLICY;
308 else {
309 n = strtoul(src, &e, 0);
310 if (!e || *e || e == src || n > 255)
311 return false;
312 }
313
314 *dst = n;
315 return true;
316 }
317
318 static bool
319 system_tos_aton(const char *src, unsigned *dst)
320 {
321 char *e;
322
323 *dst = strtoul(src, &e, 16);
324 if (e == src || *e || *dst > 255)
325 return false;
326
327 return true;
328 }
329
330 int system_init(void)
331 {
332 static struct event_socket rtnl_event;
333 static struct event_socket hotplug_event;
334
335 sock_ioctl = socket(AF_LOCAL, SOCK_DGRAM, 0);
336 system_fd_set_cloexec(sock_ioctl);
337
338 /* Prepare socket for routing / address control */
339 sock_rtnl = create_socket(NETLINK_ROUTE, 0);
340 if (!sock_rtnl)
341 return -1;
342
343 if (!create_event_socket(&rtnl_event, NETLINK_ROUTE, cb_rtnl_event))
344 return -1;
345
346 if (!create_hotplug_event_socket(&hotplug_event, NETLINK_KOBJECT_UEVENT,
347 handle_hotplug_event))
348 return -1;
349
350 /* Receive network link events form kernel */
351 nl_socket_add_membership(rtnl_event.sock, RTNLGRP_LINK);
352
353 return 0;
354 }
355
356 static void write_file(const char *path, const char *val)
357 {
358 int fd;
359
360 fd = open(path, O_WRONLY);
361 if (fd < 0)
362 return;
363
364 if (write(fd, val, strlen(val))) {}
365 close(fd);
366 }
367
368 static int read_file(const char *path, char *buf, const size_t buf_sz)
369 {
370 int fd = -1, ret = -1;
371
372 fd = open(path, O_RDONLY);
373 if (fd < 0)
374 goto out;
375
376 ssize_t len = read(fd, buf, buf_sz - 1);
377 if (len < 0)
378 goto out;
379
380 ret = buf[len] = 0;
381
382 out:
383 if (fd >= 0)
384 close(fd);
385
386 return ret;
387 }
388
389
390 static const char *
391 dev_sysctl_path(const char *prefix, const char *ifname, const char *file)
392 {
393 snprintf(dev_buf, sizeof(dev_buf), "%s/sys/net/%s/%s/%s", proc_path, prefix, ifname, file);
394
395 return dev_buf;
396 }
397
398 static const char *
399 dev_sysfs_path(const char *ifname, const char *file)
400 {
401 snprintf(dev_buf, sizeof(dev_buf), "%s/class/net/%s/%s", sysfs_path, ifname, file);
402
403 return dev_buf;
404 }
405
406 static void
407 system_set_dev_sysctl(const char *prefix, const char *file, const char *ifname,
408 const char *val)
409 {
410 write_file(dev_sysctl_path(prefix, ifname, file), val);
411 }
412
413 static int
414 system_get_dev_sysctl(const char *prefix, const char *file, const char *ifname,
415 char *buf, size_t buf_sz)
416 {
417 return read_file(dev_sysctl_path(prefix, ifname, file), buf, buf_sz);
418 }
419
420 static void
421 system_set_dev_sysfs(const char *file, const char *ifname, const char *val)
422 {
423 if (!val)
424 return;
425
426 write_file(dev_sysfs_path(ifname, file), val);
427 }
428
429 static void
430 system_set_dev_sysfs_int(const char *file, const char *ifname, int val)
431 {
432 char buf[16];
433
434 snprintf(buf, sizeof(buf), "%d", val);
435 system_set_dev_sysfs(file, ifname, buf);
436 }
437
438 static int
439 system_get_dev_sysfs(const char *file, const char *ifname, char *buf, size_t buf_sz)
440 {
441 return read_file(dev_sysfs_path(ifname, file), buf, buf_sz);
442 }
443
444 static void system_set_disable_ipv6(struct device *dev, const char *val)
445 {
446 system_set_dev_sysctl("ipv6/conf", "disable_ipv6", dev->ifname, val);
447 }
448
449 static void system_set_ip6segmentrouting(struct device *dev, const char *val)
450 {
451 system_set_dev_sysctl("ipv6/conf", "seg6_enabled", dev->ifname, val);
452 }
453
454 static void system_set_rpfilter(struct device *dev, const char *val)
455 {
456 system_set_dev_sysctl("ipv4/conf", "rp_filter", dev->ifname, val);
457 }
458
459 static void system_set_acceptlocal(struct device *dev, const char *val)
460 {
461 system_set_dev_sysctl("ipv4/conf", "accept_local", dev->ifname, val);
462 }
463
464 static void system_set_igmpversion(struct device *dev, const char *val)
465 {
466 system_set_dev_sysctl("ipv4/conf", "force_igmp_version", dev->ifname, val);
467 }
468
469 static void system_set_mldversion(struct device *dev, const char *val)
470 {
471 system_set_dev_sysctl("ipv6/conf", "force_mld_version", dev->ifname, val);
472 }
473
474 static void system_set_neigh4reachabletime(struct device *dev, const char *val)
475 {
476 system_set_dev_sysctl("ipv4/neigh", "base_reachable_time_ms", dev->ifname, val);
477 }
478
479 static void system_set_neigh6reachabletime(struct device *dev, const char *val)
480 {
481 system_set_dev_sysctl("ipv6/neigh", "base_reachable_time_ms", dev->ifname, val);
482 }
483
484 static void system_set_neigh4gcstaletime(struct device *dev, const char *val)
485 {
486 system_set_dev_sysctl("ipv4/neigh", "gc_stale_time", dev->ifname, val);
487 }
488
489 static void system_set_neigh6gcstaletime(struct device *dev, const char *val)
490 {
491 system_set_dev_sysctl("ipv6/neigh", "gc_stale_time", dev->ifname, val);
492 }
493
494 static void system_set_neigh4locktime(struct device *dev, const char *val)
495 {
496 system_set_dev_sysctl("ipv4/neigh", "locktime", dev->ifname, val);
497 }
498
499 static void system_set_dadtransmits(struct device *dev, const char *val)
500 {
501 system_set_dev_sysctl("ipv6/conf", "dad_transmits", dev->ifname, val);
502 }
503
504 static void system_set_sendredirects(struct device *dev, const char *val)
505 {
506 system_set_dev_sysctl("ipv4/conf", "send_redirects", dev->ifname, val);
507 }
508
509 static void system_set_drop_v4_unicast_in_l2_multicast(struct device *dev, const char *val)
510 {
511 system_set_dev_sysctl("ipv4/conf", "drop_unicast_in_l2_multicast", dev->ifname, val);
512 }
513
514 static void system_set_drop_v6_unicast_in_l2_multicast(struct device *dev, const char *val)
515 {
516 system_set_dev_sysctl("ipv6/conf", "drop_unicast_in_l2_multicast", dev->ifname, val);
517 }
518
519 static void system_set_drop_gratuitous_arp(struct device *dev, const char *val)
520 {
521 system_set_dev_sysctl("ipv4/conf", "drop_gratuitous_arp", dev->ifname, val);
522 }
523
524 static void system_set_drop_unsolicited_na(struct device *dev, const char *val)
525 {
526 system_set_dev_sysctl("ipv6/conf", "drop_unsolicited_na", dev->ifname, val);
527 }
528
529 static void system_set_arp_accept(struct device *dev, const char *val)
530 {
531 system_set_dev_sysctl("ipv4/conf", "arp_accept", dev->ifname, val);
532 }
533
534 static void system_bridge_set_multicast_to_unicast(struct device *dev, const char *val)
535 {
536 system_set_dev_sysfs("brport/multicast_to_unicast", dev->ifname, val);
537 }
538
539 static void system_bridge_set_multicast_fast_leave(struct device *dev, const char *val)
540 {
541 system_set_dev_sysfs("brport/multicast_fast_leave", dev->ifname, val);
542 }
543
544 static void system_bridge_set_hairpin_mode(struct device *dev, const char *val)
545 {
546 system_set_dev_sysfs("brport/hairpin_mode", dev->ifname, val);
547 }
548
549 static void system_bridge_set_proxyarp_wifi(struct device *dev, const char *val)
550 {
551 system_set_dev_sysfs("brport/proxyarp_wifi", dev->ifname, val);
552 }
553
554 static void system_bridge_set_bpdu_filter(struct device *dev, const char *val)
555 {
556 system_set_dev_sysfs("brport/bpdu_filter", dev->ifname, val);
557 }
558
559 static void system_bridge_set_isolated(struct device *dev, const char *val)
560 {
561 system_set_dev_sysfs("brport/isolated", dev->ifname, val);
562 }
563
564 static void system_bridge_set_multicast_router(struct device *dev, const char *val)
565 {
566 system_set_dev_sysfs("brport/multicast_router", dev->ifname, val);
567 }
568
569 void system_bridge_set_stp_state(struct device *dev, bool val)
570 {
571 const char *valstr = val ? "1" : "0";
572
573 system_set_dev_sysfs("bridge/stp_state", dev->ifname, valstr);
574 }
575
576 static void system_bridge_set_learning(struct device *dev, const char *val)
577 {
578 system_set_dev_sysfs("brport/learning", dev->ifname, val);
579 }
580
581 static void system_bridge_set_unicast_flood(struct device *dev, const char *val)
582 {
583 system_set_dev_sysfs("brport/unicast_flood", dev->ifname, val);
584 }
585
586 static int system_get_disable_ipv6(struct device *dev, char *buf, const size_t buf_sz)
587 {
588 return system_get_dev_sysctl("ipv6/conf", "disable_ipv6",
589 dev->ifname, buf, buf_sz);
590 }
591
592 static int system_get_ip6segmentrouting(struct device *dev, char *buf, const size_t buf_sz)
593 {
594 return system_get_dev_sysctl("ipv6/conf", "seg6_enabled",
595 dev->ifname, buf, buf_sz);
596 }
597
598 static int system_get_rpfilter(struct device *dev, char *buf, const size_t buf_sz)
599 {
600 return system_get_dev_sysctl("ipv4/conf", "rp_filter",
601 dev->ifname, buf, buf_sz);
602 }
603
604 static int system_get_acceptlocal(struct device *dev, char *buf, const size_t buf_sz)
605 {
606 return system_get_dev_sysctl("ipv4/conf", "accept_local",
607 dev->ifname, buf, buf_sz);
608 }
609
610 static int system_get_igmpversion(struct device *dev, char *buf, const size_t buf_sz)
611 {
612 return system_get_dev_sysctl("ipv4/conf", "force_igmp_version",
613 dev->ifname, buf, buf_sz);
614 }
615
616 static int system_get_mldversion(struct device *dev, char *buf, const size_t buf_sz)
617 {
618 return system_get_dev_sysctl("ipv6/conf", "force_mld_version",
619 dev->ifname, buf, buf_sz);
620 }
621
622 static int system_get_neigh4reachabletime(struct device *dev, char *buf, const size_t buf_sz)
623 {
624 return system_get_dev_sysctl("ipv4/neigh", "base_reachable_time_ms",
625 dev->ifname, buf, buf_sz);
626 }
627
628 static int system_get_neigh6reachabletime(struct device *dev, char *buf, const size_t buf_sz)
629 {
630 return system_get_dev_sysctl("ipv6/neigh", "base_reachable_time_ms",
631 dev->ifname, buf, buf_sz);
632 }
633
634 static int system_get_neigh4gcstaletime(struct device *dev, char *buf, const size_t buf_sz)
635 {
636 return system_get_dev_sysctl("ipv4/neigh", "gc_stale_time",
637 dev->ifname, buf, buf_sz);
638 }
639
640 static int system_get_neigh6gcstaletime(struct device *dev, char *buf, const size_t buf_sz)
641 {
642 return system_get_dev_sysctl("ipv6/neigh", "gc_stale_time",
643 dev->ifname, buf, buf_sz);
644 }
645
646 static int system_get_neigh4locktime(struct device *dev, char *buf, const size_t buf_sz)
647 {
648 return system_get_dev_sysctl("ipv4/neigh", "locktime",
649 dev->ifname, buf, buf_sz);
650 }
651
652 static int system_get_dadtransmits(struct device *dev, char *buf, const size_t buf_sz)
653 {
654 return system_get_dev_sysctl("ipv6/conf", "dad_transmits",
655 dev->ifname, buf, buf_sz);
656 }
657
658 static int system_get_sendredirects(struct device *dev, char *buf, const size_t buf_sz)
659 {
660 return system_get_dev_sysctl("ipv4/conf", "send_redirects",
661 dev->ifname, buf, buf_sz);
662 }
663
664
665 static int system_get_drop_v4_unicast_in_l2_multicast(struct device *dev, char *buf, const size_t buf_sz)
666 {
667 return system_get_dev_sysctl("ipv4/conf", "drop_unicast_in_l2_multicast",
668 dev->ifname, buf, buf_sz);
669 }
670
671 static int system_get_drop_v6_unicast_in_l2_multicast(struct device *dev, char *buf, const size_t buf_sz)
672 {
673 return system_get_dev_sysctl("ipv6/conf", "drop_unicast_in_l2_multicast",
674 dev->ifname, buf, buf_sz);
675 }
676
677 static int system_get_drop_gratuitous_arp(struct device *dev, char *buf, const size_t buf_sz)
678 {
679 return system_get_dev_sysctl("ipv4/conf", "drop_gratuitous_arp",
680 dev->ifname, buf, buf_sz);
681 }
682
683 static int system_get_drop_unsolicited_na(struct device *dev, char *buf, const size_t buf_sz)
684 {
685 return system_get_dev_sysctl("ipv6/conf", "drop_unsolicited_na",
686 dev->ifname, buf, buf_sz);
687 }
688
689 static int system_get_arp_accept(struct device *dev, char *buf, const size_t buf_sz)
690 {
691 return system_get_dev_sysctl("ipv4/conf", "arp_accept",
692 dev->ifname, buf, buf_sz);
693 }
694
695 #ifndef IFF_LOWER_UP
696 #define IFF_LOWER_UP 0x10000
697 #endif
698
699 static void
700 system_device_update_state(struct device *dev, unsigned int flags, unsigned int ifindex)
701 {
702 if (dev->type == &simple_device_type) {
703 if (dev->external)
704 device_set_disabled(dev, !(flags & IFF_UP));
705
706 device_set_present(dev, ifindex > 0);
707 }
708 device_set_link(dev, flags & IFF_LOWER_UP ? true : false);
709 }
710
711 /* Evaluate netlink messages */
712 static int cb_rtnl_event(struct nl_msg *msg, void *arg)
713 {
714 struct nlmsghdr *nh = nlmsg_hdr(msg);
715 struct ifinfomsg *ifi = NLMSG_DATA(nh);
716 struct nlattr *nla[__IFLA_MAX];
717 struct device *dev;
718
719 if (nh->nlmsg_type != RTM_NEWLINK)
720 return 0;
721
722 nlmsg_parse(nh, sizeof(struct ifinfomsg), nla, __IFLA_MAX - 1, NULL);
723 if (!nla[IFLA_IFNAME])
724 return 0;
725
726 dev = device_find(nla_data(nla[IFLA_IFNAME]));
727 if (!dev)
728 return 0;
729
730 system_device_update_state(dev, ifi->ifi_flags, ifi->ifi_index);
731 return 0;
732 }
733
734 static void
735 handle_hotplug_msg(char *data, int size)
736 {
737 const char *subsystem = NULL, *interface = NULL, *interface_old = NULL;
738 char *cur, *end, *sep;
739 int skip;
740 bool add;
741
742 if (!strncmp(data, "add@", 4) || !strncmp(data, "move@", 5))
743 add = true;
744 else if (!strncmp(data, "remove@", 7))
745 add = false;
746 else
747 return;
748
749 skip = strlen(data) + 1;
750 end = data + size;
751
752 for (cur = data + skip; cur < end; cur += skip) {
753 skip = strlen(cur) + 1;
754
755 sep = strchr(cur, '=');
756 if (!sep)
757 continue;
758
759 *sep = 0;
760 if (!strcmp(cur, "INTERFACE"))
761 interface = sep + 1;
762 else if (!strcmp(cur, "SUBSYSTEM")) {
763 subsystem = sep + 1;
764 if (strcmp(subsystem, "net") != 0)
765 return;
766 } else if (!strcmp(cur, "DEVPATH_OLD")) {
767 interface_old = strrchr(sep + 1, '/');
768 if (interface_old)
769 interface_old++;
770 }
771 }
772
773 if (!subsystem || !interface)
774 return;
775
776 if (interface_old)
777 device_hotplug_event(interface_old, false);
778
779 device_hotplug_event(interface, add);
780 }
781
782 static void
783 handle_hotplug_event(struct uloop_fd *u, unsigned int events)
784 {
785 struct event_socket *ev = container_of(u, struct event_socket, uloop);
786 struct sockaddr_nl nla;
787 unsigned char *buf = NULL;
788 int size;
789 int err;
790 socklen_t errlen = sizeof(err);
791
792 if (!u->error) {
793 while ((size = nl_recv(ev->sock, &nla, &buf, NULL)) > 0) {
794 if (nla.nl_pid == 0)
795 handle_hotplug_msg((char *) buf, size);
796
797 free(buf);
798 }
799 return;
800 }
801
802 if (getsockopt(u->fd, SOL_SOCKET, SO_ERROR, (void *)&err, &errlen))
803 goto abort;
804
805 switch(err) {
806 case ENOBUFS:
807 /* Increase rx buffer size on netlink socket */
808 ev->bufsize *= 2;
809 if (nl_socket_set_buffer_size(ev->sock, ev->bufsize, 0))
810 goto abort;
811 break;
812
813 default:
814 goto abort;
815 }
816 u->error = false;
817 return;
818
819 abort:
820 uloop_fd_delete(&ev->uloop);
821 return;
822 }
823
824 static int system_rtnl_call(struct nl_msg *msg)
825 {
826 int ret;
827
828 ret = nl_send_auto_complete(sock_rtnl, msg);
829 nlmsg_free(msg);
830
831 if (ret < 0)
832 return ret;
833
834 return nl_wait_for_ack(sock_rtnl);
835 }
836
837 static struct nl_msg *__system_ifinfo_msg(int af, int index, const char *ifname, uint16_t type, uint16_t flags)
838 {
839 struct nl_msg *msg;
840 struct ifinfomsg iim = {
841 .ifi_family = af,
842 .ifi_index = index,
843 };
844
845 msg = nlmsg_alloc_simple(type, flags | NLM_F_REQUEST);
846 if (!msg)
847 return NULL;
848
849 nlmsg_append(msg, &iim, sizeof(iim), 0);
850 if (ifname)
851 nla_put_string(msg, IFLA_IFNAME, ifname);
852
853 return msg;
854 }
855
856 static struct nl_msg *system_ifinfo_msg(const char *ifname, uint16_t type, uint16_t flags)
857 {
858 return __system_ifinfo_msg(AF_UNSPEC, 0, ifname, type, flags);
859 }
860
861 static int system_link_del(const char *ifname)
862 {
863 struct nl_msg *msg;
864
865 msg = system_ifinfo_msg(ifname, RTM_DELLINK, 0);
866 if (!msg)
867 return -1;
868
869 return system_rtnl_call(msg);
870 }
871
872 int system_bridge_delbr(struct device *bridge)
873 {
874 return system_link_del(bridge->ifname);
875 }
876
877 static int system_bridge_if(const char *bridge, struct device *dev, int cmd, void *data)
878 {
879 struct ifreq ifr;
880
881 memset(&ifr, 0, sizeof(ifr));
882 if (dev)
883 ifr.ifr_ifindex = dev->ifindex;
884 else
885 ifr.ifr_data = data;
886 strncpy(ifr.ifr_name, bridge, sizeof(ifr.ifr_name) - 1);
887 return ioctl(sock_ioctl, cmd, &ifr);
888 }
889
890 static bool system_is_bridge(const char *name)
891 {
892 struct stat st;
893
894 return stat(dev_sysfs_path(name, "bridge"), &st) >= 0;
895 }
896
897 static char *system_get_bridge(const char *name, char *buf, int buflen)
898 {
899 char *path;
900 ssize_t len = -1;
901 glob_t gl;
902
903 snprintf(buf, buflen, "%s/devices/virtual/net/*/brif/%s/bridge", sysfs_path, name);
904 if (glob(buf, GLOB_NOSORT, NULL, &gl) < 0)
905 return NULL;
906
907 if (gl.gl_pathc > 0)
908 len = readlink(gl.gl_pathv[0], buf, buflen);
909
910 globfree(&gl);
911
912 if (len < 0)
913 return NULL;
914
915 buf[len] = 0;
916 path = strrchr(buf, '/');
917 if (!path)
918 return NULL;
919
920 return path + 1;
921 }
922
923 static void
924 system_bridge_set_wireless(struct device *bridge, struct device *dev)
925 {
926 bool mcast_to_ucast = dev->wireless_ap;
927 bool hairpin;
928
929 if (dev->settings.flags & DEV_OPT_MULTICAST_TO_UNICAST)
930 mcast_to_ucast = dev->settings.multicast_to_unicast;
931 else if (bridge->settings.flags & DEV_OPT_MULTICAST_TO_UNICAST &&
932 !bridge->settings.multicast_to_unicast)
933 mcast_to_ucast = false;
934
935 hairpin = mcast_to_ucast || dev->wireless_proxyarp;
936 if (dev->wireless_isolate)
937 hairpin = false;
938
939 system_bridge_set_multicast_to_unicast(dev, mcast_to_ucast ? "1" : "0");
940 system_bridge_set_hairpin_mode(dev, hairpin ? "1" : "0");
941 system_bridge_set_proxyarp_wifi(dev, dev->wireless_proxyarp ? "1" : "0");
942 }
943
944 int system_bridge_addif(struct device *bridge, struct device *dev)
945 {
946 char buf[64];
947 char *oldbr;
948 int tries = 0;
949 int ret;
950
951 retry:
952 ret = 0;
953 oldbr = system_get_bridge(dev->ifname, dev_buf, sizeof(dev_buf));
954 if (!oldbr || strcmp(oldbr, bridge->ifname) != 0) {
955 ret = system_bridge_if(bridge->ifname, dev, SIOCBRADDIF, NULL);
956 tries++;
957 D(SYSTEM, "Failed to add device '%s' to bridge '%s' (tries=%d): %s\n",
958 dev->ifname, bridge->ifname, tries, strerror(errno));
959 if (tries <= 3)
960 goto retry;
961 }
962
963 if (dev->wireless)
964 system_bridge_set_wireless(bridge, dev);
965
966 if (dev->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
967 snprintf(buf, sizeof(buf), "%u", dev->settings.multicast_router);
968 system_bridge_set_multicast_router(dev, buf);
969 }
970
971 if (dev->settings.flags & DEV_OPT_MULTICAST_FAST_LEAVE &&
972 dev->settings.multicast_fast_leave)
973 system_bridge_set_multicast_fast_leave(dev, "1");
974
975 if (dev->settings.flags & DEV_OPT_LEARNING &&
976 !dev->settings.learning)
977 system_bridge_set_learning(dev, "0");
978
979 if (dev->settings.flags & DEV_OPT_UNICAST_FLOOD &&
980 !dev->settings.unicast_flood)
981 system_bridge_set_unicast_flood(dev, "0");
982
983 if (dev->settings.flags & DEV_OPT_ISOLATE &&
984 dev->settings.isolate)
985 system_bridge_set_isolated(dev, "1");
986
987 if (dev->bpdu_filter)
988 system_bridge_set_bpdu_filter(dev, dev->bpdu_filter ? "1" : "0");
989
990 return ret;
991 }
992
993 int system_bridge_delif(struct device *bridge, struct device *dev)
994 {
995 return system_bridge_if(bridge->ifname, dev, SIOCBRDELIF, NULL);
996 }
997
998 int system_bridge_vlan(const char *iface, uint16_t vid, int16_t vid_end, bool add, unsigned int vflags)
999 {
1000 struct bridge_vlan_info vinfo = { .vid = vid, };
1001 unsigned short flags = 0;
1002 struct nlattr *afspec;
1003 struct nl_msg *nlm;
1004 int index;
1005 int ret = 0;
1006
1007 index = if_nametoindex(iface);
1008 if (!index)
1009 return -1;
1010
1011 nlm = __system_ifinfo_msg(PF_BRIDGE, index, NULL, add ? RTM_SETLINK : RTM_DELLINK, 0);
1012 if (!nlm)
1013 return -1;
1014
1015 if (vflags & BRVLAN_F_SELF)
1016 flags |= BRIDGE_FLAGS_SELF;
1017
1018 if (vflags & BRVLAN_F_PVID)
1019 vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
1020
1021 if (vflags & BRVLAN_F_UNTAGGED)
1022 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
1023
1024 afspec = nla_nest_start(nlm, IFLA_AF_SPEC);
1025 if (!afspec) {
1026 ret = -ENOMEM;
1027 goto failure;
1028 }
1029
1030 if (flags)
1031 nla_put_u16(nlm, IFLA_BRIDGE_FLAGS, flags);
1032
1033 if (vid_end > vid)
1034 vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN;
1035
1036 nla_put(nlm, IFLA_BRIDGE_VLAN_INFO, sizeof(vinfo), &vinfo);
1037
1038 if (vid_end > vid) {
1039 vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN;
1040 vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_END;
1041 vinfo.vid = vid_end;
1042 nla_put(nlm, IFLA_BRIDGE_VLAN_INFO, sizeof(vinfo), &vinfo);
1043 }
1044
1045 nla_nest_end(nlm, afspec);
1046
1047 return system_rtnl_call(nlm);
1048
1049 failure:
1050 nlmsg_free(nlm);
1051 return ret;
1052 }
1053
1054 int system_bonding_set_device(struct device *dev, struct bonding_config *cfg)
1055 {
1056 const char *ifname = dev->ifname;
1057 struct blob_attr *cur;
1058 char op = cfg ? '+' : '-';
1059 char buf[64];
1060 size_t rem;
1061
1062 snprintf(dev_buf, sizeof(dev_buf), "%s/class/net/bonding_masters", sysfs_path);
1063 snprintf(buf, sizeof(buf), "%c%s", op, ifname);
1064 write_file(dev_buf, buf);
1065
1066 if (!cfg)
1067 return 0;
1068
1069 system_set_dev_sysfs("bonding/mode", ifname, bonding_policy_str[cfg->policy]);
1070
1071 system_set_dev_sysfs_int("bonding/all_ports_active", ifname, cfg->all_ports_active);
1072
1073 if (cfg->policy == BONDING_MODE_BALANCE_XOR ||
1074 cfg->policy == BONDING_MODE_BALANCE_TLB ||
1075 cfg->policy == BONDING_MODE_8023AD)
1076 system_set_dev_sysfs("bonding/xmit_hash_policy", ifname, cfg->xmit_hash_policy);
1077
1078 if (cfg->policy == BONDING_MODE_8023AD) {
1079 system_set_dev_sysfs("bonding/ad_actor_system", ifname, cfg->ad_actor_system);
1080 system_set_dev_sysfs_int("bonding/ad_actor_sys_prio", ifname, cfg->ad_actor_sys_prio);
1081 system_set_dev_sysfs("bonding/ad_select", ifname, cfg->ad_select);
1082 system_set_dev_sysfs("bonding/lacp_rate", ifname, cfg->lacp_rate);
1083 system_set_dev_sysfs_int("bonding/min_links", ifname, cfg->min_links);
1084 }
1085
1086 if (cfg->policy == BONDING_MODE_BALANCE_RR)
1087 system_set_dev_sysfs_int("bonding/packets_per_slave", ifname, cfg->packets_per_port);
1088
1089 if (cfg->policy == BONDING_MODE_BALANCE_TLB ||
1090 cfg->policy == BONDING_MODE_BALANCE_ALB)
1091 system_set_dev_sysfs_int("bonding/lp_interval", ifname, cfg->lp_interval);
1092
1093 if (cfg->policy == BONDING_MODE_BALANCE_TLB)
1094 system_set_dev_sysfs_int("bonding/tlb_dynamic_lb", ifname, cfg->dynamic_lb);
1095 system_set_dev_sysfs_int("bonding/resend_igmp", ifname, cfg->resend_igmp);
1096 system_set_dev_sysfs_int("bonding/num_grat_arp", ifname, cfg->num_peer_notif);
1097 system_set_dev_sysfs("bonding/primary_reselect", ifname, cfg->primary_reselect);
1098 system_set_dev_sysfs("bonding/fail_over_mac", ifname, cfg->failover_mac);
1099
1100 system_set_dev_sysfs_int((cfg->monitor_arp ?
1101 "bonding/arp_interval" :
1102 "bonding/miimon"), ifname, cfg->monitor_interval);
1103
1104 blobmsg_for_each_attr(cur, cfg->arp_target, rem) {
1105 snprintf(buf, sizeof(buf), "+%s", blobmsg_get_string(cur));
1106 system_set_dev_sysfs("bonding/arp_ip_target", ifname, buf);
1107 }
1108
1109 system_set_dev_sysfs_int("bonding/arp_all_targets", ifname, cfg->arp_all_targets);
1110 if (cfg->policy < BONDING_MODE_8023AD)
1111 system_set_dev_sysfs("bonding/arp_validate", ifname, cfg->arp_validate);
1112 system_set_dev_sysfs_int("bonding/use_carrier", ifname, cfg->use_carrier);
1113 if (!cfg->monitor_arp && cfg->monitor_interval) {
1114 system_set_dev_sysfs_int("bonding/updelay", ifname, cfg->updelay);
1115 system_set_dev_sysfs_int("bonding/downdelay", ifname, cfg->downdelay);
1116 }
1117
1118 return 0;
1119 }
1120
1121 int system_bonding_set_port(struct device *dev, struct device *port, bool add, bool primary)
1122 {
1123 const char *port_name = port->ifname;
1124 const char op_ch = add ? '+' : '-';
1125 char buf[IFNAMSIZ + 1];
1126
1127 snprintf(buf, sizeof(buf), "%c%s", op_ch, port_name);
1128 system_if_down(port);
1129 system_set_dev_sysfs("bonding/slaves", dev->ifname, buf);
1130 system_if_up(port);
1131
1132 if (primary)
1133 system_set_dev_sysfs("bonding/primary", dev->ifname,
1134 add ? port_name : "");
1135
1136 return 0;
1137 }
1138
1139 int system_if_resolve(struct device *dev)
1140 {
1141 struct ifreq ifr;
1142
1143 memset(&ifr, 0, sizeof(ifr));
1144 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
1145 if (!ioctl(sock_ioctl, SIOCGIFINDEX, &ifr))
1146 return ifr.ifr_ifindex;
1147 else
1148 return 0;
1149 }
1150
1151 static int system_if_flags(const char *ifname, unsigned add, unsigned rem)
1152 {
1153 struct ifreq ifr;
1154
1155 memset(&ifr, 0, sizeof(ifr));
1156 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1);
1157 if (ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr) < 0)
1158 return -1;
1159
1160 ifr.ifr_flags |= add;
1161 ifr.ifr_flags &= ~rem;
1162 return ioctl(sock_ioctl, SIOCSIFFLAGS, &ifr);
1163 }
1164
1165 struct clear_data {
1166 struct nl_msg *msg;
1167 struct device *dev;
1168 int type;
1169 int size;
1170 int af;
1171 };
1172
1173
1174 static bool check_ifaddr(struct nlmsghdr *hdr, int ifindex)
1175 {
1176 struct ifaddrmsg *ifa = NLMSG_DATA(hdr);
1177
1178 return (long)ifa->ifa_index == ifindex;
1179 }
1180
1181 static bool check_route(struct nlmsghdr *hdr, int ifindex)
1182 {
1183 struct rtmsg *r = NLMSG_DATA(hdr);
1184 struct nlattr *tb[__RTA_MAX];
1185
1186 if (r->rtm_protocol == RTPROT_KERNEL &&
1187 r->rtm_family == AF_INET6)
1188 return false;
1189
1190 nlmsg_parse(hdr, sizeof(struct rtmsg), tb, __RTA_MAX - 1, NULL);
1191 if (!tb[RTA_OIF])
1192 return false;
1193
1194 return *(int *)RTA_DATA(tb[RTA_OIF]) == ifindex;
1195 }
1196
1197 static bool check_rule(struct nlmsghdr *hdr, int ifindex)
1198 {
1199 return true;
1200 }
1201
1202 static int cb_clear_event(struct nl_msg *msg, void *arg)
1203 {
1204 struct clear_data *clr = arg;
1205 struct nlmsghdr *hdr = nlmsg_hdr(msg);
1206 bool (*cb)(struct nlmsghdr *, int ifindex);
1207 int type, ret;
1208
1209 switch(clr->type) {
1210 case RTM_GETADDR:
1211 type = RTM_DELADDR;
1212 if (hdr->nlmsg_type != RTM_NEWADDR)
1213 return NL_SKIP;
1214
1215 cb = check_ifaddr;
1216 break;
1217 case RTM_GETROUTE:
1218 type = RTM_DELROUTE;
1219 if (hdr->nlmsg_type != RTM_NEWROUTE)
1220 return NL_SKIP;
1221
1222 cb = check_route;
1223 break;
1224 case RTM_GETRULE:
1225 type = RTM_DELRULE;
1226 if (hdr->nlmsg_type != RTM_NEWRULE)
1227 return NL_SKIP;
1228
1229 cb = check_rule;
1230 break;
1231 default:
1232 return NL_SKIP;
1233 }
1234
1235 if (!cb(hdr, clr->dev ? clr->dev->ifindex : 0))
1236 return NL_SKIP;
1237
1238 if (type == RTM_DELRULE)
1239 D(SYSTEM, "Remove a rule\n");
1240 else
1241 D(SYSTEM, "Remove %s from device %s\n",
1242 type == RTM_DELADDR ? "an address" : "a route",
1243 clr->dev->ifname);
1244
1245 memcpy(nlmsg_hdr(clr->msg), hdr, hdr->nlmsg_len);
1246 hdr = nlmsg_hdr(clr->msg);
1247 hdr->nlmsg_type = type;
1248 hdr->nlmsg_flags = NLM_F_REQUEST;
1249
1250 nl_socket_disable_auto_ack(sock_rtnl);
1251 ret = nl_send_auto_complete(sock_rtnl, clr->msg);
1252 if (ret < 0) {
1253 if (type == RTM_DELRULE)
1254 D(SYSTEM, "Error deleting a rule: %d\n", ret);
1255 else
1256 D(SYSTEM, "Error deleting %s from device '%s': %d\n",
1257 type == RTM_DELADDR ? "an address" : "a route",
1258 clr->dev->ifname, ret);
1259 }
1260
1261 nl_socket_enable_auto_ack(sock_rtnl);
1262
1263 return NL_SKIP;
1264 }
1265
1266 static int
1267 cb_finish_event(struct nl_msg *msg, void *arg)
1268 {
1269 int *pending = arg;
1270 *pending = 0;
1271 return NL_STOP;
1272 }
1273
1274 static int
1275 error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
1276 {
1277 int *pending = arg;
1278 *pending = err->error;
1279 return NL_STOP;
1280 }
1281
1282 static void
1283 system_if_clear_entries(struct device *dev, int type, int af)
1284 {
1285 struct clear_data clr;
1286 struct nl_cb *cb;
1287 struct rtmsg rtm = {
1288 .rtm_family = af,
1289 .rtm_flags = RTM_F_CLONED,
1290 };
1291 int flags = NLM_F_DUMP;
1292 int pending = 1;
1293
1294 clr.af = af;
1295 clr.dev = dev;
1296 clr.type = type;
1297 switch (type) {
1298 case RTM_GETADDR:
1299 case RTM_GETRULE:
1300 clr.size = sizeof(struct rtgenmsg);
1301 break;
1302 case RTM_GETROUTE:
1303 clr.size = sizeof(struct rtmsg);
1304 break;
1305 default:
1306 return;
1307 }
1308
1309 cb = nl_cb_alloc(NL_CB_DEFAULT);
1310 if (!cb)
1311 return;
1312
1313 clr.msg = nlmsg_alloc_simple(type, flags);
1314 if (!clr.msg)
1315 goto out;
1316
1317 nlmsg_append(clr.msg, &rtm, clr.size, 0);
1318 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, cb_clear_event, &clr);
1319 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, cb_finish_event, &pending);
1320 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &pending);
1321
1322 if (nl_send_auto_complete(sock_rtnl, clr.msg) < 0)
1323 goto free;
1324
1325 while (pending > 0)
1326 nl_recvmsgs(sock_rtnl, cb);
1327
1328 free:
1329 nlmsg_free(clr.msg);
1330 out:
1331 nl_cb_put(cb);
1332 }
1333
1334 /*
1335 * Clear bridge (membership) state and bring down device
1336 */
1337 void system_if_clear_state(struct device *dev)
1338 {
1339 static char buf[256];
1340 char *bridge;
1341 device_set_ifindex(dev, system_if_resolve(dev));
1342
1343 if (dev->external || !dev->ifindex)
1344 return;
1345
1346 system_if_flags(dev->ifname, 0, IFF_UP);
1347
1348 if (system_is_bridge(dev->ifname)) {
1349 D(SYSTEM, "Delete existing bridge named '%s'\n", dev->ifname);
1350 system_bridge_delbr(dev);
1351 return;
1352 }
1353
1354 bridge = system_get_bridge(dev->ifname, buf, sizeof(buf));
1355 if (bridge) {
1356 D(SYSTEM, "Remove device '%s' from bridge '%s'\n", dev->ifname, bridge);
1357 system_bridge_if(bridge, dev, SIOCBRDELIF, NULL);
1358 }
1359
1360 system_if_clear_entries(dev, RTM_GETROUTE, AF_INET);
1361 system_if_clear_entries(dev, RTM_GETADDR, AF_INET);
1362 system_if_clear_entries(dev, RTM_GETROUTE, AF_INET6);
1363 system_if_clear_entries(dev, RTM_GETADDR, AF_INET6);
1364 system_if_clear_entries(dev, RTM_GETNEIGH, AF_INET);
1365 system_if_clear_entries(dev, RTM_GETNEIGH, AF_INET6);
1366 system_set_disable_ipv6(dev, "0");
1367 }
1368
1369 static inline unsigned long
1370 sec_to_jiffies(int val)
1371 {
1372 return (unsigned long) val * 100;
1373 }
1374
1375 int system_bridge_addbr(struct device *bridge, struct bridge_config *cfg)
1376 {
1377 struct nlattr *linkinfo, *data;
1378 struct nl_msg *msg;
1379 uint64_t val;
1380 int rv;
1381
1382 msg = system_ifinfo_msg(bridge->ifname, RTM_NEWLINK, NLM_F_CREATE | NLM_F_EXCL);
1383 if (!msg)
1384 return -1;
1385
1386 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
1387 goto nla_put_failure;
1388
1389 nla_put_string(msg, IFLA_INFO_KIND, "bridge");
1390
1391 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
1392 goto nla_put_failure;
1393
1394 nla_put_u32(msg, IFLA_BR_STP_STATE, cfg->stp);
1395 nla_put_u32(msg, IFLA_BR_FORWARD_DELAY, sec_to_jiffies(cfg->forward_delay));
1396 nla_put_u8(msg, IFLA_BR_MCAST_SNOOPING, !!cfg->igmp_snoop);
1397 nla_put_u8(msg, IFLA_BR_MCAST_QUERIER, !!cfg->multicast_querier);
1398 nla_put_u32(msg, IFLA_BR_MCAST_HASH_MAX, cfg->hash_max);
1399
1400 if (bridge->settings.flags & DEV_OPT_MULTICAST_ROUTER)
1401 nla_put_u8(msg, IFLA_BR_MCAST_ROUTER, !!bridge->settings.multicast_router);
1402
1403 if (cfg->flags & BRIDGE_OPT_ROBUSTNESS) {
1404 nla_put_u32(msg, IFLA_BR_MCAST_STARTUP_QUERY_CNT, cfg->robustness);
1405 nla_put_u32(msg, IFLA_BR_MCAST_LAST_MEMBER_CNT, cfg->robustness);
1406 }
1407
1408 if (cfg->flags & BRIDGE_OPT_QUERY_INTERVAL)
1409 nla_put_u64(msg, IFLA_BR_MCAST_QUERY_INTVL, cfg->query_interval);
1410
1411 if (cfg->flags & BRIDGE_OPT_QUERY_RESPONSE_INTERVAL)
1412 nla_put_u64(msg, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, cfg->query_response_interval);
1413
1414 if (cfg->flags & BRIDGE_OPT_LAST_MEMBER_INTERVAL)
1415 nla_put_u64(msg, IFLA_BR_MCAST_LAST_MEMBER_INTVL, cfg->last_member_interval);
1416
1417 if (cfg->flags & BRIDGE_OPT_ROBUSTNESS ||
1418 cfg->flags & BRIDGE_OPT_QUERY_INTERVAL ||
1419 cfg->flags & BRIDGE_OPT_QUERY_RESPONSE_INTERVAL) {
1420 val = cfg->robustness * cfg->query_interval +
1421 cfg->query_response_interval;
1422
1423 nla_put_u64(msg, IFLA_BR_MCAST_MEMBERSHIP_INTVL, val);
1424
1425 val -= cfg->query_response_interval / 2;
1426
1427 nla_put_u64(msg, IFLA_BR_MCAST_QUERIER_INTVL, val);
1428 }
1429
1430 if (cfg->flags & BRIDGE_OPT_QUERY_INTERVAL) {
1431 val = cfg->query_interval / 4;
1432
1433 nla_put_u64(msg, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, val);
1434 }
1435
1436 nla_put_u8(msg, IFLA_BR_VLAN_FILTERING, !!cfg->vlan_filtering);
1437 nla_put_u16(msg, IFLA_BR_PRIORITY, cfg->priority);
1438 nla_put_u32(msg, IFLA_BR_HELLO_TIME, sec_to_jiffies(cfg->hello_time));
1439 nla_put_u32(msg, IFLA_BR_MAX_AGE, sec_to_jiffies(cfg->max_age));
1440
1441 if (cfg->flags & BRIDGE_OPT_AGEING_TIME)
1442 nla_put_u32(msg, IFLA_BR_AGEING_TIME, sec_to_jiffies(cfg->ageing_time));
1443
1444 nla_nest_end(msg, data);
1445 nla_nest_end(msg, linkinfo);
1446
1447 rv = system_rtnl_call(msg);
1448 if (rv)
1449 D(SYSTEM, "Error adding bridge '%s': %d\n", bridge->ifname, rv);
1450
1451 return rv;
1452
1453 nla_put_failure:
1454 nlmsg_free(msg);
1455 return -ENOMEM;
1456 }
1457
1458 int system_macvlan_add(struct device *macvlan, struct device *dev, struct macvlan_config *cfg)
1459 {
1460 struct nl_msg *msg;
1461 struct nlattr *linkinfo, *data;
1462 size_t i;
1463 int rv;
1464 static const struct {
1465 const char *name;
1466 enum macvlan_mode val;
1467 } modes[] = {
1468 { "private", MACVLAN_MODE_PRIVATE },
1469 { "vepa", MACVLAN_MODE_VEPA },
1470 { "bridge", MACVLAN_MODE_BRIDGE },
1471 { "passthru", MACVLAN_MODE_PASSTHRU },
1472 };
1473
1474 msg = system_ifinfo_msg(macvlan->ifname, RTM_NEWLINK, NLM_F_CREATE | NLM_F_EXCL);
1475 if (!msg)
1476 return -1;
1477
1478 if (cfg->flags & MACVLAN_OPT_MACADDR)
1479 nla_put(msg, IFLA_ADDRESS, sizeof(cfg->macaddr), cfg->macaddr);
1480 nla_put_u32(msg, IFLA_LINK, dev->ifindex);
1481
1482 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
1483 goto nla_put_failure;
1484
1485 nla_put_string(msg, IFLA_INFO_KIND, "macvlan");
1486
1487 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
1488 goto nla_put_failure;
1489
1490 if (cfg->mode) {
1491 for (i = 0; i < ARRAY_SIZE(modes); i++) {
1492 if (strcmp(cfg->mode, modes[i].name) != 0)
1493 continue;
1494
1495 nla_put_u32(msg, IFLA_MACVLAN_MODE, modes[i].val);
1496 break;
1497 }
1498 }
1499
1500 nla_nest_end(msg, data);
1501 nla_nest_end(msg, linkinfo);
1502
1503 rv = system_rtnl_call(msg);
1504 if (rv)
1505 D(SYSTEM, "Error adding macvlan '%s' over '%s': %d\n", macvlan->ifname, dev->ifname, rv);
1506
1507 return rv;
1508
1509 nla_put_failure:
1510 nlmsg_free(msg);
1511 return -ENOMEM;
1512 }
1513
1514 int system_link_netns_move(struct device *dev, int netns_fd, const char *target_ifname)
1515 {
1516 struct nl_msg *msg;
1517 int index;
1518
1519 if (!dev)
1520 return -1;
1521
1522 index = system_if_resolve(dev);
1523 msg = __system_ifinfo_msg(AF_UNSPEC, index, target_ifname, RTM_NEWLINK, 0);
1524 if (!msg)
1525 return -1;
1526
1527 nla_put_u32(msg, IFLA_NET_NS_FD, netns_fd);
1528 return system_rtnl_call(msg);
1529 }
1530
1531 int system_macvlan_del(struct device *macvlan)
1532 {
1533 return system_link_del(macvlan->ifname);
1534 }
1535
1536 int system_netns_open(const pid_t target_ns)
1537 {
1538 char pid_net_path[PATH_MAX];
1539
1540 snprintf(pid_net_path, sizeof(pid_net_path), "/proc/%u/ns/net", target_ns);
1541
1542 return open(pid_net_path, O_RDONLY);
1543 }
1544
1545 int system_netns_set(int netns_fd)
1546 {
1547 return setns(netns_fd, CLONE_NEWNET);
1548 }
1549
1550 int system_veth_add(struct device *veth, struct veth_config *cfg)
1551 {
1552 struct nl_msg *msg;
1553 struct ifinfomsg empty_iim = {0,};
1554 struct nlattr *linkinfo, *data, *veth_info;
1555 int rv;
1556
1557 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
1558
1559 if (!msg)
1560 return -1;
1561
1562 nlmsg_append(msg, &empty_iim, sizeof(empty_iim), 0);
1563
1564 if (cfg->flags & VETH_OPT_MACADDR)
1565 nla_put(msg, IFLA_ADDRESS, sizeof(cfg->macaddr), cfg->macaddr);
1566 nla_put_string(msg, IFLA_IFNAME, veth->ifname);
1567
1568 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
1569 goto nla_put_failure;
1570
1571 nla_put_string(msg, IFLA_INFO_KIND, "veth");
1572
1573 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
1574 goto nla_put_failure;
1575
1576 if (!(veth_info = nla_nest_start(msg, VETH_INFO_PEER)))
1577 goto nla_put_failure;
1578
1579 nlmsg_append(msg, &empty_iim, sizeof(empty_iim), 0);
1580
1581 if (cfg->flags & VETH_OPT_PEER_NAME)
1582 nla_put_string(msg, IFLA_IFNAME, cfg->peer_name);
1583 if (cfg->flags & VETH_OPT_PEER_MACADDR)
1584 nla_put(msg, IFLA_ADDRESS, sizeof(cfg->peer_macaddr), cfg->peer_macaddr);
1585
1586 nla_nest_end(msg, veth_info);
1587 nla_nest_end(msg, data);
1588 nla_nest_end(msg, linkinfo);
1589
1590 rv = system_rtnl_call(msg);
1591 if (rv) {
1592 if (cfg->flags & VETH_OPT_PEER_NAME)
1593 D(SYSTEM, "Error adding veth '%s' with peer '%s': %d\n", veth->ifname, cfg->peer_name, rv);
1594 else
1595 D(SYSTEM, "Error adding veth '%s': %d\n", veth->ifname, rv);
1596 }
1597
1598 return rv;
1599
1600 nla_put_failure:
1601 nlmsg_free(msg);
1602 return -ENOMEM;
1603 }
1604
1605 int system_veth_del(struct device *veth)
1606 {
1607 return system_link_del(veth->ifname);
1608 }
1609
1610 static int system_vlan(struct device *dev, int id)
1611 {
1612 struct vlan_ioctl_args ifr = {
1613 .cmd = SET_VLAN_NAME_TYPE_CMD,
1614 .u.name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD,
1615 };
1616
1617 if (ioctl(sock_ioctl, SIOCSIFVLAN, &ifr) < 0)
1618 return -1;
1619
1620 if (id < 0) {
1621 ifr.cmd = DEL_VLAN_CMD;
1622 ifr.u.VID = 0;
1623 } else {
1624 ifr.cmd = ADD_VLAN_CMD;
1625 ifr.u.VID = id;
1626 }
1627 strncpy(ifr.device1, dev->ifname, sizeof(ifr.device1));
1628 return ioctl(sock_ioctl, SIOCSIFVLAN, &ifr);
1629 }
1630
1631 int system_vlan_add(struct device *dev, int id)
1632 {
1633 return system_vlan(dev, id);
1634 }
1635
1636 int system_vlan_del(struct device *dev)
1637 {
1638 return system_vlan(dev, -1);
1639 }
1640
1641 int system_vlandev_add(struct device *vlandev, struct device *dev, struct vlandev_config *cfg)
1642 {
1643 struct nl_msg *msg;
1644 struct nlattr *linkinfo, *data, *qos;
1645 struct ifinfomsg iim = { .ifi_family = AF_UNSPEC };
1646 struct vlan_qos_mapping *elem;
1647 struct ifla_vlan_qos_mapping nl_qos_map;
1648 int rv;
1649
1650 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
1651
1652 if (!msg)
1653 return -1;
1654
1655 nlmsg_append(msg, &iim, sizeof(iim), 0);
1656 nla_put_string(msg, IFLA_IFNAME, vlandev->ifname);
1657 nla_put_u32(msg, IFLA_LINK, dev->ifindex);
1658
1659 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
1660 goto nla_put_failure;
1661
1662 nla_put_string(msg, IFLA_INFO_KIND, "vlan");
1663
1664 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
1665 goto nla_put_failure;
1666
1667 nla_put_u16(msg, IFLA_VLAN_ID, cfg->vid);
1668
1669 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
1670 nla_put_u16(msg, IFLA_VLAN_PROTOCOL, htons(cfg->proto));
1671 #else
1672 if(cfg->proto == VLAN_PROTO_8021AD)
1673 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);
1674 #endif
1675
1676 if (!(qos = nla_nest_start(msg, IFLA_VLAN_INGRESS_QOS)))
1677 goto nla_put_failure;
1678
1679 vlist_simple_for_each_element(&cfg->ingress_qos_mapping_list, elem, node) {
1680 nl_qos_map.from = elem->from;
1681 nl_qos_map.to = elem->to;
1682 nla_put(msg, IFLA_VLAN_QOS_MAPPING, sizeof(nl_qos_map), &nl_qos_map);
1683 }
1684 nla_nest_end(msg, qos);
1685
1686 if (!(qos = nla_nest_start(msg, IFLA_VLAN_EGRESS_QOS)))
1687 goto nla_put_failure;
1688
1689 vlist_simple_for_each_element(&cfg->egress_qos_mapping_list, elem, node) {
1690 nl_qos_map.from = elem->from;
1691 nl_qos_map.to = elem->to;
1692 nla_put(msg, IFLA_VLAN_QOS_MAPPING, sizeof(nl_qos_map), &nl_qos_map);
1693 }
1694 nla_nest_end(msg, qos);
1695
1696 nla_nest_end(msg, data);
1697 nla_nest_end(msg, linkinfo);
1698
1699 rv = system_rtnl_call(msg);
1700 if (rv)
1701 D(SYSTEM, "Error adding vlandev '%s' over '%s': %d\n", vlandev->ifname, dev->ifname, rv);
1702
1703 return rv;
1704
1705 nla_put_failure:
1706 nlmsg_free(msg);
1707 return -ENOMEM;
1708 }
1709
1710 int system_vlandev_del(struct device *vlandev)
1711 {
1712 return system_link_del(vlandev->ifname);
1713 }
1714
1715 #if LINUX_VERSION_CODE >= KERNEL_VERSION(6,1,0)
1716 struct if_get_master_data {
1717 int ifindex;
1718 int master_ifindex;
1719 int pending;
1720 };
1721
1722 static void if_get_master_dsa_linkinfo_attr(struct if_get_master_data *data,
1723 struct rtattr *attr)
1724 {
1725 struct rtattr *cur;
1726 int rem = RTA_PAYLOAD(attr);
1727
1728 for (cur = RTA_DATA(attr); RTA_OK(cur, rem); cur = RTA_NEXT(cur, rem)) {
1729 if (cur->rta_type != IFLA_DSA_MASTER)
1730 continue;
1731
1732 data->master_ifindex = *(__u32 *)RTA_DATA(cur);
1733 }
1734 }
1735
1736 static void if_get_master_linkinfo_attr(struct if_get_master_data *data,
1737 struct rtattr *attr)
1738 {
1739 struct rtattr *cur;
1740 int rem = RTA_PAYLOAD(attr);
1741
1742 for (cur = RTA_DATA(attr); RTA_OK(cur, rem); cur = RTA_NEXT(cur, rem)) {
1743 if (cur->rta_type != IFLA_INFO_KIND && cur->rta_type != IFLA_INFO_DATA)
1744 continue;
1745
1746 if (cur->rta_type == IFLA_INFO_KIND && strcmp("dsa", (char *)RTA_DATA(cur)))
1747 break;
1748
1749 if (cur->rta_type == IFLA_INFO_DATA)
1750 if_get_master_dsa_linkinfo_attr(data, cur);
1751 }
1752 }
1753
1754 static int cb_if_get_master_valid(struct nl_msg *msg, void *arg)
1755 {
1756 struct nlmsghdr *nh = nlmsg_hdr(msg);
1757 struct ifinfomsg *ifi = NLMSG_DATA(nh);
1758 struct if_get_master_data *data = (struct if_get_master_data *)arg;
1759 struct rtattr *attr;
1760 int rem;
1761
1762 if (nh->nlmsg_type != RTM_NEWLINK)
1763 return NL_SKIP;
1764
1765 if (ifi->ifi_family != AF_UNSPEC)
1766 return NL_SKIP;
1767
1768 if (ifi->ifi_index != data->ifindex)
1769 return NL_SKIP;
1770
1771 attr = IFLA_RTA(ifi);
1772 rem = nh->nlmsg_len - NLMSG_LENGTH(sizeof(*ifi));
1773
1774 while (RTA_OK(attr, rem)) {
1775 if (attr->rta_type == IFLA_LINKINFO)
1776 if_get_master_linkinfo_attr(data, attr);
1777
1778 attr = RTA_NEXT(attr, rem);
1779 }
1780
1781 return NL_OK;
1782 }
1783
1784 static int cb_if_get_master_ack(struct nl_msg *msg, void *arg)
1785 {
1786 struct if_get_master_data *data = (struct if_get_master_data *)arg;
1787 data->pending = 0;
1788 return NL_STOP;
1789 }
1790
1791 static int cb_if_get_master_error(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
1792 {
1793 struct if_get_master_data *data = (struct if_get_master_data *)arg;
1794 data->pending = 0;
1795 return NL_STOP;
1796 }
1797
1798 static int system_if_get_master_ifindex(struct device *dev)
1799 {
1800 struct nl_cb *cb = nl_cb_alloc(NL_CB_DEFAULT);
1801 struct nl_msg *msg;
1802 struct ifinfomsg ifi = {
1803 .ifi_family = AF_UNSPEC,
1804 .ifi_index = 0,
1805 };
1806 struct if_get_master_data data = {
1807 .ifindex = if_nametoindex(dev->ifname),
1808 .master_ifindex = -1,
1809 .pending = 1,
1810 };
1811 int ret = -1;
1812
1813 if (!cb)
1814 return ret;
1815
1816 msg = nlmsg_alloc_simple(RTM_GETLINK, NLM_F_REQUEST);
1817 if (!msg)
1818 goto out;
1819
1820 if (nlmsg_append(msg, &ifi, sizeof(ifi), 0) ||
1821 nla_put_string(msg, IFLA_IFNAME, dev->ifname))
1822 goto free;
1823
1824 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, cb_if_get_master_valid, &data);
1825 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, cb_if_get_master_ack, &data);
1826 nl_cb_err(cb, NL_CB_CUSTOM, cb_if_get_master_error, &data);
1827
1828 ret = nl_send_auto_complete(sock_rtnl, msg);
1829 if (ret < 0)
1830 goto free;
1831
1832 while (data.pending > 0)
1833 nl_recvmsgs(sock_rtnl, cb);
1834
1835 if (data.master_ifindex >= 0)
1836 ret = data.master_ifindex;
1837
1838 free:
1839 nlmsg_free(msg);
1840 out:
1841 nl_cb_put(cb);
1842 return ret;
1843 }
1844
1845 static void system_refresh_orig_macaddr(struct device *dev, struct device_settings *s)
1846 {
1847 struct ifreq ifr;
1848
1849 memset(&ifr, 0, sizeof(ifr));
1850 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
1851
1852 if (ioctl(sock_ioctl, SIOCGIFHWADDR, &ifr) == 0)
1853 memcpy(s->macaddr, &ifr.ifr_hwaddr.sa_data, sizeof(s->macaddr));
1854 }
1855
1856 static void system_set_master(struct device *dev, int master_ifindex)
1857 {
1858 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
1859 struct nl_msg *nlm;
1860
1861 nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST);
1862 if (!nlm)
1863 return;
1864
1865 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
1866 nla_put_string(nlm, IFLA_IFNAME, dev->ifname);
1867
1868 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
1869 if (!linkinfo)
1870 goto failure;
1871
1872 nla_put_string(nlm, IFLA_INFO_KIND, "dsa");
1873 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
1874 if (!infodata)
1875 goto failure;
1876
1877 nla_put_u32(nlm, IFLA_DSA_MASTER, master_ifindex);
1878
1879 nla_nest_end(nlm, infodata);
1880 nla_nest_end(nlm, linkinfo);
1881
1882 system_rtnl_call(nlm);
1883
1884 return;
1885
1886 failure:
1887 nlmsg_free(nlm);
1888 }
1889 #endif
1890
1891 static void ethtool_link_mode_clear_bit(__s8 nwords, int nr, __u32 *mask)
1892 {
1893 if (nr < 0)
1894 return;
1895
1896 if (nr >= (nwords * 32))
1897 return;
1898
1899 mask[nr / 32] &= ~(1U << (nr % 32));
1900 }
1901
1902 static bool ethtool_link_mode_test_bit(__s8 nwords, int nr, const __u32 *mask)
1903 {
1904 if (nr < 0)
1905 return false;
1906
1907 if (nr >= (nwords * 32))
1908 return false;
1909
1910 return !!(mask[nr / 32] & (1U << (nr % 32)));
1911 }
1912
1913 static int
1914 system_get_ethtool_gro(struct device *dev)
1915 {
1916 struct ethtool_value ecmd;
1917 struct ifreq ifr = {
1918 .ifr_data = (caddr_t)&ecmd,
1919 };
1920
1921 memset(&ecmd, 0, sizeof(ecmd));
1922 ecmd.cmd = ETHTOOL_GGRO;
1923 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
1924
1925 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr))
1926 return -1;
1927
1928 return ecmd.data;
1929 }
1930
1931 static void
1932 system_set_ethtool_gro(struct device *dev, struct device_settings *s)
1933 {
1934 struct ethtool_value ecmd;
1935 struct ifreq ifr = {
1936 .ifr_data = (caddr_t)&ecmd,
1937 };
1938
1939 memset(&ecmd, 0, sizeof(ecmd));
1940 ecmd.cmd = ETHTOOL_SGRO;
1941 ecmd.data = s->gro;
1942 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
1943
1944 ioctl(sock_ioctl, SIOCETHTOOL, &ifr);
1945 }
1946
1947 static void
1948 system_set_ethtool_pause(struct device *dev, struct device_settings *s)
1949 {
1950 struct ethtool_pauseparam pp;
1951 struct ifreq ifr = {
1952 .ifr_data = (caddr_t)&pp,
1953 };
1954
1955 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
1956 memset(&pp, 0, sizeof(pp));
1957 pp.cmd = ETHTOOL_GPAUSEPARAM;
1958 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr))
1959 return;
1960
1961 if (s->flags & DEV_OPT_RXPAUSE || s->flags & DEV_OPT_TXPAUSE) {
1962 pp.autoneg = AUTONEG_DISABLE;
1963
1964 if (s->flags & DEV_OPT_PAUSE) {
1965 if (s->flags & DEV_OPT_RXPAUSE)
1966 pp.rx_pause = s->rxpause && s->pause;
1967 else
1968 pp.rx_pause = s->pause;
1969
1970 if (s->flags & DEV_OPT_TXPAUSE)
1971 pp.tx_pause = s->txpause && s->pause;
1972 else
1973 pp.tx_pause = s->pause;
1974 } else {
1975 if (s->flags & DEV_OPT_RXPAUSE)
1976 pp.rx_pause = s->rxpause;
1977
1978 if (s->flags & DEV_OPT_TXPAUSE)
1979 pp.tx_pause = s->txpause;
1980 }
1981
1982 if (s->flags & DEV_OPT_ASYM_PAUSE &&
1983 !s->asym_pause && (pp.rx_pause != pp.tx_pause))
1984 pp.rx_pause = pp.tx_pause = false;
1985 } else {
1986 pp.autoneg = AUTONEG_ENABLE;
1987 /* Pause and Asym_Pause advertising bits will be set via
1988 * ETHTOOL_SLINKSETTINGS in system_set_ethtool_settings()
1989 */
1990 }
1991
1992 pp.cmd = ETHTOOL_SPAUSEPARAM;
1993 ioctl(sock_ioctl, SIOCETHTOOL, &ifr);
1994 }
1995
1996 static void
1997 system_set_ethtool_eee_settings(struct device *dev, struct device_settings *s)
1998 {
1999 struct ethtool_eee eeecmd;
2000 struct ifreq ifr = {
2001 .ifr_data = (caddr_t)&eeecmd,
2002 };
2003
2004 memset(&eeecmd, 0, sizeof(eeecmd));
2005 eeecmd.cmd = ETHTOOL_SEEE;
2006 eeecmd.eee_enabled = s->eee;
2007 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
2008
2009 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) != 0)
2010 netifd_log_message(L_WARNING, "cannot set eee %d for device %s", s->eee, dev->ifname);
2011 }
2012
2013 static void
2014 system_set_ethtool_settings(struct device *dev, struct device_settings *s)
2015 {
2016 struct {
2017 struct ethtool_link_settings req;
2018 __u32 link_mode_data[3 * 127];
2019 } ecmd;
2020 struct ifreq ifr = {
2021 .ifr_data = (caddr_t)&ecmd,
2022 };
2023 size_t i;
2024 __s8 nwords;
2025 __u32 *supported, *advertising;
2026
2027 system_set_ethtool_pause(dev, s);
2028
2029 if (s->flags & DEV_OPT_EEE)
2030 system_set_ethtool_eee_settings(dev, s);
2031
2032 memset(&ecmd, 0, sizeof(ecmd));
2033 ecmd.req.cmd = ETHTOOL_GLINKSETTINGS;
2034 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
2035
2036 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) < 0 ||
2037 ecmd.req.link_mode_masks_nwords >= 0 ||
2038 ecmd.req.cmd != ETHTOOL_GLINKSETTINGS)
2039 return;
2040
2041 ecmd.req.link_mode_masks_nwords = -ecmd.req.link_mode_masks_nwords;
2042
2043 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) < 0 ||
2044 ecmd.req.link_mode_masks_nwords <= 0 ||
2045 ecmd.req.cmd != ETHTOOL_GLINKSETTINGS)
2046 return;
2047
2048 nwords = ecmd.req.link_mode_masks_nwords;
2049 supported = &ecmd.link_mode_data[0];
2050 advertising = &ecmd.link_mode_data[nwords];
2051 memcpy(advertising, supported, sizeof(__u32) * nwords);
2052
2053 for (i = 0; i < ARRAY_SIZE(ethtool_modes); i++) {
2054 if (s->flags & DEV_OPT_DUPLEX) {
2055 if (s->duplex)
2056 ethtool_link_mode_clear_bit(nwords, ethtool_modes[i].bit_half, advertising);
2057 else
2058 ethtool_link_mode_clear_bit(nwords, ethtool_modes[i].bit_full, advertising);
2059 }
2060 if (!(s->flags & DEV_OPT_SPEED) ||
2061 s->speed == ethtool_modes[i].speed)
2062 continue;
2063
2064 ethtool_link_mode_clear_bit(nwords, ethtool_modes[i].bit_full, advertising);
2065 ethtool_link_mode_clear_bit(nwords, ethtool_modes[i].bit_half, advertising);
2066 }
2067
2068 if (s->flags & DEV_OPT_PAUSE)
2069 if (!s->pause)
2070 ethtool_link_mode_clear_bit(nwords, ETHTOOL_LINK_MODE_Pause_BIT, advertising);
2071
2072 if (s->flags & DEV_OPT_ASYM_PAUSE)
2073 if (!s->asym_pause)
2074 ethtool_link_mode_clear_bit(nwords, ETHTOOL_LINK_MODE_Asym_Pause_BIT, advertising);
2075
2076 if (s->flags & DEV_OPT_AUTONEG) {
2077 ecmd.req.autoneg = s->autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
2078 if (!s->autoneg) {
2079 if (s->flags & DEV_OPT_SPEED)
2080 ecmd.req.speed = s->speed;
2081
2082 if (s->flags & DEV_OPT_DUPLEX)
2083 ecmd.req.duplex = s->duplex ? DUPLEX_FULL : DUPLEX_HALF;
2084 }
2085 }
2086
2087 ecmd.req.cmd = ETHTOOL_SLINKSETTINGS;
2088 ioctl(sock_ioctl, SIOCETHTOOL, &ifr);
2089 }
2090
2091 static void
2092 system_set_ethtool_settings_after_up(struct device *dev, struct device_settings *s)
2093 {
2094 if (s->flags & DEV_OPT_GRO)
2095 system_set_ethtool_gro(dev, s);
2096 }
2097
2098 void
2099 system_if_get_settings(struct device *dev, struct device_settings *s)
2100 {
2101 struct ifreq ifr;
2102 char buf[10];
2103 int ret;
2104
2105 memset(&ifr, 0, sizeof(ifr));
2106 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
2107
2108 if (ioctl(sock_ioctl, SIOCGIFMTU, &ifr) == 0) {
2109 s->mtu = ifr.ifr_mtu;
2110 s->flags |= DEV_OPT_MTU;
2111 }
2112
2113 s->mtu6 = system_update_ipv6_mtu(dev, 0);
2114 if (s->mtu6 > 0)
2115 s->flags |= DEV_OPT_MTU6;
2116
2117 if (ioctl(sock_ioctl, SIOCGIFTXQLEN, &ifr) == 0) {
2118 s->txqueuelen = ifr.ifr_qlen;
2119 s->flags |= DEV_OPT_TXQUEUELEN;
2120 }
2121
2122 if (ioctl(sock_ioctl, SIOCGIFHWADDR, &ifr) == 0) {
2123 memcpy(s->macaddr, &ifr.ifr_hwaddr.sa_data, sizeof(s->macaddr));
2124 s->flags |= DEV_OPT_MACADDR;
2125 }
2126
2127 if (!system_get_disable_ipv6(dev, buf, sizeof(buf))) {
2128 s->ipv6 = !strtoul(buf, NULL, 0);
2129 s->flags |= DEV_OPT_IPV6;
2130 }
2131
2132 if (!system_get_ip6segmentrouting(dev, buf, sizeof(buf))) {
2133 s->ip6segmentrouting = strtoul(buf, NULL, 0);
2134 s->flags |= DEV_OPT_IP6SEGMENTROUTING;
2135 }
2136
2137 if (ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr) == 0) {
2138 s->promisc = ifr.ifr_flags & IFF_PROMISC;
2139 s->flags |= DEV_OPT_PROMISC;
2140
2141 s->multicast = ifr.ifr_flags & IFF_MULTICAST;
2142 s->flags |= DEV_OPT_MULTICAST;
2143 }
2144
2145 if (!system_get_rpfilter(dev, buf, sizeof(buf))) {
2146 s->rpfilter = strtoul(buf, NULL, 0);
2147 s->flags |= DEV_OPT_RPFILTER;
2148 }
2149
2150 if (!system_get_acceptlocal(dev, buf, sizeof(buf))) {
2151 s->acceptlocal = strtoul(buf, NULL, 0);
2152 s->flags |= DEV_OPT_ACCEPTLOCAL;
2153 }
2154
2155 if (!system_get_igmpversion(dev, buf, sizeof(buf))) {
2156 s->igmpversion = strtoul(buf, NULL, 0);
2157 s->flags |= DEV_OPT_IGMPVERSION;
2158 }
2159
2160 if (!system_get_mldversion(dev, buf, sizeof(buf))) {
2161 s->mldversion = strtoul(buf, NULL, 0);
2162 s->flags |= DEV_OPT_MLDVERSION;
2163 }
2164
2165 if (!system_get_neigh4reachabletime(dev, buf, sizeof(buf))) {
2166 s->neigh4reachabletime = strtoul(buf, NULL, 0);
2167 s->flags |= DEV_OPT_NEIGHREACHABLETIME;
2168 }
2169
2170 if (!system_get_neigh6reachabletime(dev, buf, sizeof(buf))) {
2171 s->neigh6reachabletime = strtoul(buf, NULL, 0);
2172 s->flags |= DEV_OPT_NEIGHREACHABLETIME;
2173 }
2174
2175 if (!system_get_neigh4locktime(dev, buf, sizeof(buf))) {
2176 s->neigh4locktime = strtol(buf, NULL, 0);
2177 s->flags |= DEV_OPT_NEIGHLOCKTIME;
2178 }
2179
2180 if (!system_get_neigh4gcstaletime(dev, buf, sizeof(buf))) {
2181 s->neigh4gcstaletime = strtoul(buf, NULL, 0);
2182 s->flags |= DEV_OPT_NEIGHGCSTALETIME;
2183 }
2184
2185 if (!system_get_neigh6gcstaletime(dev, buf, sizeof(buf))) {
2186 s->neigh6gcstaletime = strtoul(buf, NULL, 0);
2187 s->flags |= DEV_OPT_NEIGHGCSTALETIME;
2188 }
2189
2190 if (!system_get_dadtransmits(dev, buf, sizeof(buf))) {
2191 s->dadtransmits = strtoul(buf, NULL, 0);
2192 s->flags |= DEV_OPT_DADTRANSMITS;
2193 }
2194
2195 if (!system_get_sendredirects(dev, buf, sizeof(buf))) {
2196 s->sendredirects = strtoul(buf, NULL, 0);
2197 s->flags |= DEV_OPT_SENDREDIRECTS;
2198 }
2199
2200 if (!system_get_drop_v4_unicast_in_l2_multicast(dev, buf, sizeof(buf))) {
2201 s->drop_v4_unicast_in_l2_multicast = strtoul(buf, NULL, 0);
2202 s->flags |= DEV_OPT_DROP_V4_UNICAST_IN_L2_MULTICAST;
2203 }
2204
2205 if (!system_get_drop_v6_unicast_in_l2_multicast(dev, buf, sizeof(buf))) {
2206 s->drop_v6_unicast_in_l2_multicast = strtoul(buf, NULL, 0);
2207 s->flags |= DEV_OPT_DROP_V6_UNICAST_IN_L2_MULTICAST;
2208 }
2209
2210 if (!system_get_drop_gratuitous_arp(dev, buf, sizeof(buf))) {
2211 s->drop_gratuitous_arp = strtoul(buf, NULL, 0);
2212 s->flags |= DEV_OPT_DROP_GRATUITOUS_ARP;
2213 }
2214
2215 if (!system_get_drop_unsolicited_na(dev, buf, sizeof(buf))) {
2216 s->drop_unsolicited_na = strtoul(buf, NULL, 0);
2217 s->flags |= DEV_OPT_DROP_UNSOLICITED_NA;
2218 }
2219
2220 if (!system_get_arp_accept(dev, buf, sizeof(buf))) {
2221 s->arp_accept = strtoul(buf, NULL, 0);
2222 s->flags |= DEV_OPT_ARP_ACCEPT;
2223 }
2224
2225 ret = system_get_ethtool_gro(dev);
2226 if (ret >= 0) {
2227 s->gro = ret;
2228 s->flags |= DEV_OPT_GRO;
2229 }
2230
2231 #if LINUX_VERSION_CODE >= KERNEL_VERSION(6,1,0)
2232 ret = system_if_get_master_ifindex(dev);
2233 if (ret >= 0) {
2234 s->master_ifindex = ret;
2235 s->flags |= DEV_OPT_MASTER;
2236 }
2237 #endif
2238 }
2239
2240 void
2241 system_if_apply_settings(struct device *dev, struct device_settings *s, uint64_t apply_mask)
2242 {
2243 struct ifreq ifr;
2244 char buf[12];
2245
2246 apply_mask &= s->flags;
2247
2248 memset(&ifr, 0, sizeof(ifr));
2249 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
2250 if (apply_mask & DEV_OPT_MTU) {
2251 ifr.ifr_mtu = s->mtu;
2252 if (ioctl(sock_ioctl, SIOCSIFMTU, &ifr) < 0)
2253 s->flags &= ~DEV_OPT_MTU;
2254 }
2255 if (apply_mask & DEV_OPT_MTU6) {
2256 system_update_ipv6_mtu(dev, s->mtu6);
2257 }
2258 if (apply_mask & DEV_OPT_TXQUEUELEN) {
2259 ifr.ifr_qlen = s->txqueuelen;
2260 if (ioctl(sock_ioctl, SIOCSIFTXQLEN, &ifr) < 0)
2261 s->flags &= ~DEV_OPT_TXQUEUELEN;
2262 }
2263 if ((apply_mask & (DEV_OPT_MACADDR | DEV_OPT_DEFAULT_MACADDR)) && !dev->external) {
2264 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
2265 memcpy(&ifr.ifr_hwaddr.sa_data, s->macaddr, sizeof(s->macaddr));
2266 if (ioctl(sock_ioctl, SIOCSIFHWADDR, &ifr) < 0)
2267 s->flags &= ~DEV_OPT_MACADDR;
2268 }
2269 if (apply_mask & DEV_OPT_IPV6)
2270 system_set_disable_ipv6(dev, s->ipv6 ? "0" : "1");
2271 if (s->flags & DEV_OPT_IP6SEGMENTROUTING & apply_mask) {
2272 struct device dummy = {
2273 .ifname = "all",
2274 };
2275 bool ip6segmentrouting = device_check_ip6segmentrouting();
2276
2277 system_set_ip6segmentrouting(dev, s->ip6segmentrouting ? "1" : "0");
2278 system_set_ip6segmentrouting(&dummy, ip6segmentrouting ? "1" : "0");
2279 }
2280 if (apply_mask & DEV_OPT_PROMISC) {
2281 if (system_if_flags(dev->ifname, s->promisc ? IFF_PROMISC : 0,
2282 !s->promisc ? IFF_PROMISC : 0) < 0)
2283 s->flags &= ~DEV_OPT_PROMISC;
2284 }
2285 if (apply_mask & DEV_OPT_RPFILTER) {
2286 snprintf(buf, sizeof(buf), "%u", s->rpfilter);
2287 system_set_rpfilter(dev, buf);
2288 }
2289 if (apply_mask & DEV_OPT_ACCEPTLOCAL)
2290 system_set_acceptlocal(dev, s->acceptlocal ? "1" : "0");
2291 if (apply_mask & DEV_OPT_IGMPVERSION) {
2292 snprintf(buf, sizeof(buf), "%u", s->igmpversion);
2293 system_set_igmpversion(dev, buf);
2294 }
2295 if (apply_mask & DEV_OPT_MLDVERSION) {
2296 snprintf(buf, sizeof(buf), "%u", s->mldversion);
2297 system_set_mldversion(dev, buf);
2298 }
2299 if (apply_mask & DEV_OPT_NEIGHREACHABLETIME) {
2300 snprintf(buf, sizeof(buf), "%u", s->neigh4reachabletime);
2301 system_set_neigh4reachabletime(dev, buf);
2302 snprintf(buf, sizeof(buf), "%u", s->neigh6reachabletime);
2303 system_set_neigh6reachabletime(dev, buf);
2304 }
2305 if (apply_mask & DEV_OPT_NEIGHLOCKTIME) {
2306 snprintf(buf, sizeof(buf), "%d", s->neigh4locktime);
2307 system_set_neigh4locktime(dev, buf);
2308 }
2309 if (apply_mask & DEV_OPT_NEIGHGCSTALETIME) {
2310 snprintf(buf, sizeof(buf), "%u", s->neigh4gcstaletime);
2311 system_set_neigh4gcstaletime(dev, buf);
2312 snprintf(buf, sizeof(buf), "%u", s->neigh6gcstaletime);
2313 system_set_neigh6gcstaletime(dev, buf);
2314 }
2315 if (apply_mask & DEV_OPT_DADTRANSMITS) {
2316 snprintf(buf, sizeof(buf), "%u", s->dadtransmits);
2317 system_set_dadtransmits(dev, buf);
2318 }
2319 if (apply_mask & DEV_OPT_MULTICAST) {
2320 if (system_if_flags(dev->ifname, s->multicast ? IFF_MULTICAST : 0,
2321 !s->multicast ? IFF_MULTICAST : 0) < 0)
2322 s->flags &= ~DEV_OPT_MULTICAST;
2323 }
2324 if (apply_mask & DEV_OPT_SENDREDIRECTS)
2325 system_set_sendredirects(dev, s->sendredirects ? "1" : "0");
2326 if (apply_mask & DEV_OPT_DROP_V4_UNICAST_IN_L2_MULTICAST)
2327 system_set_drop_v4_unicast_in_l2_multicast(dev, s->drop_v4_unicast_in_l2_multicast ? "1" : "0");
2328 if (apply_mask & DEV_OPT_DROP_V6_UNICAST_IN_L2_MULTICAST)
2329 system_set_drop_v6_unicast_in_l2_multicast(dev, s->drop_v6_unicast_in_l2_multicast ? "1" : "0");
2330 if (apply_mask & DEV_OPT_DROP_GRATUITOUS_ARP)
2331 system_set_drop_gratuitous_arp(dev, s->drop_gratuitous_arp ? "1" : "0");
2332 if (apply_mask & DEV_OPT_DROP_UNSOLICITED_NA)
2333 system_set_drop_unsolicited_na(dev, s->drop_unsolicited_na ? "1" : "0");
2334 if (apply_mask & DEV_OPT_ARP_ACCEPT)
2335 system_set_arp_accept(dev, s->arp_accept ? "1" : "0");
2336 if (apply_mask & DEV_OPT_MASTER) {
2337 #if LINUX_VERSION_CODE >= KERNEL_VERSION(6,1,0)
2338 system_set_master(dev, s->master_ifindex);
2339 system_refresh_orig_macaddr(dev, &dev->orig_settings);
2340 #else
2341 netifd_log_message(L_WARNING, "%s Your kernel is older than linux 6.1.0, changing DSA port conduit is not supported!", dev->ifname);
2342 #endif
2343 }
2344 system_set_ethtool_settings(dev, s);
2345 }
2346
2347 void system_if_apply_settings_after_up(struct device *dev, struct device_settings *s)
2348 {
2349 system_set_ethtool_settings_after_up(dev, s);
2350 }
2351
2352 int system_if_up(struct device *dev)
2353 {
2354 return system_if_flags(dev->ifname, IFF_UP, 0);
2355 }
2356
2357 int system_if_down(struct device *dev)
2358 {
2359 return system_if_flags(dev->ifname, 0, IFF_UP);
2360 }
2361
2362 struct if_check_data {
2363 struct device *dev;
2364 int pending;
2365 int ret;
2366 };
2367
2368 static int cb_if_check_valid(struct nl_msg *msg, void *arg)
2369 {
2370 struct nlmsghdr *nh = nlmsg_hdr(msg);
2371 struct ifinfomsg *ifi = NLMSG_DATA(nh);
2372 struct if_check_data *chk = (struct if_check_data *)arg;
2373
2374 if (nh->nlmsg_type != RTM_NEWLINK)
2375 return NL_SKIP;
2376
2377 system_device_update_state(chk->dev, ifi->ifi_flags, ifi->ifi_index);
2378 return NL_OK;
2379 }
2380
2381 static int cb_if_check_ack(struct nl_msg *msg, void *arg)
2382 {
2383 struct if_check_data *chk = (struct if_check_data *)arg;
2384 chk->pending = 0;
2385 return NL_STOP;
2386 }
2387
2388 static int cb_if_check_error(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
2389 {
2390 struct if_check_data *chk = (struct if_check_data *)arg;
2391
2392 if (chk->dev->type == &simple_device_type)
2393 device_set_present(chk->dev, false);
2394 device_set_link(chk->dev, false);
2395 chk->pending = err->error;
2396
2397 return NL_STOP;
2398 }
2399
2400 struct bridge_vlan_check_data {
2401 struct device *check_dev;
2402 int ifindex;
2403 int ret;
2404 bool pending;
2405 };
2406
2407 static void bridge_vlan_check_port(struct bridge_vlan_check_data *data,
2408 struct bridge_vlan_port *port,
2409 struct bridge_vlan_info *vinfo)
2410 {
2411 uint16_t flags = 0, diff, mask;
2412
2413 if (port->flags & BRVLAN_F_PVID)
2414 flags |= BRIDGE_VLAN_INFO_PVID;
2415 if (port->flags & BRVLAN_F_UNTAGGED)
2416 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
2417
2418 diff = vinfo->flags ^ flags;
2419 mask = BRVLAN_F_UNTAGGED | (flags & BRIDGE_VLAN_INFO_PVID);
2420 if (diff & mask) {
2421 data->ret = 1;
2422 data->pending = false;
2423 }
2424
2425 port->check = 1;
2426 }
2427
2428 static void bridge_vlan_check_attr(struct bridge_vlan_check_data *data,
2429 struct rtattr *attr)
2430 {
2431 struct bridge_vlan_hotplug_port *port;
2432 struct bridge_vlan_info *vinfo;
2433 struct bridge_vlan *vlan;
2434 struct rtattr *cur;
2435 int rem = RTA_PAYLOAD(attr);
2436 int i;
2437
2438 for (cur = RTA_DATA(attr); RTA_OK(cur, rem); cur = RTA_NEXT(cur, rem)) {
2439 if (cur->rta_type != IFLA_BRIDGE_VLAN_INFO)
2440 continue;
2441
2442 vinfo = RTA_DATA(cur);
2443 vlan = vlist_find(&data->check_dev->vlans, &vinfo->vid, vlan, node);
2444 if (!vlan) {
2445 data->ret = 1;
2446 data->pending = false;
2447 return;
2448 }
2449
2450 for (i = 0; i < vlan->n_ports; i++)
2451 if (!vlan->ports[i].check)
2452 bridge_vlan_check_port(data, &vlan->ports[i], vinfo);
2453
2454 list_for_each_entry(port, &vlan->hotplug_ports, list)
2455 if (!port->port.check)
2456 bridge_vlan_check_port(data, &port->port, vinfo);
2457 }
2458 }
2459
2460 static int bridge_vlan_check_cb(struct nl_msg *msg, void *arg)
2461 {
2462 struct bridge_vlan_check_data *data = arg;
2463 struct nlmsghdr *nh = nlmsg_hdr(msg);
2464 struct ifinfomsg *ifi = NLMSG_DATA(nh);
2465 struct rtattr *attr;
2466 int rem;
2467
2468 if (nh->nlmsg_type != RTM_NEWLINK)
2469 return NL_SKIP;
2470
2471 if (ifi->ifi_family != AF_BRIDGE)
2472 return NL_SKIP;
2473
2474 if (ifi->ifi_index != data->ifindex)
2475 return NL_SKIP;
2476
2477 attr = IFLA_RTA(ifi);
2478 rem = nh->nlmsg_len - NLMSG_LENGTH(sizeof(*ifi));
2479 while (RTA_OK(attr, rem)) {
2480 if (attr->rta_type == IFLA_AF_SPEC)
2481 bridge_vlan_check_attr(data, attr);
2482
2483 attr = RTA_NEXT(attr, rem);
2484 }
2485
2486 return NL_SKIP;
2487 }
2488
2489 static int bridge_vlan_ack_cb(struct nl_msg *msg, void *arg)
2490 {
2491 struct bridge_vlan_check_data *data = arg;
2492 data->pending = false;
2493 return NL_STOP;
2494 }
2495
2496 static int bridge_vlan_error_cb(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
2497 {
2498 struct bridge_vlan_check_data *data = arg;
2499 data->pending = false;
2500 return NL_STOP;
2501 }
2502
2503 int system_bridge_vlan_check(struct device *dev, char *ifname)
2504 {
2505 struct bridge_vlan_check_data data = {
2506 .check_dev = dev,
2507 .ifindex = if_nametoindex(ifname),
2508 .ret = -1,
2509 .pending = true,
2510 };
2511 static struct ifinfomsg ifi = {
2512 .ifi_family = AF_BRIDGE
2513 };
2514 static struct rtattr ext_req = {
2515 .rta_type = IFLA_EXT_MASK,
2516 .rta_len = RTA_LENGTH(sizeof(uint32_t)),
2517 };
2518 uint32_t filter = RTEXT_FILTER_BRVLAN;
2519 struct nl_cb *cb = nl_cb_alloc(NL_CB_DEFAULT);
2520 struct bridge_vlan *vlan;
2521 struct nl_msg *msg;
2522 int i;
2523
2524 if (!data.ifindex)
2525 return 0;
2526
2527 msg = nlmsg_alloc_simple(RTM_GETLINK, NLM_F_DUMP);
2528
2529 if (nlmsg_append(msg, &ifi, sizeof(ifi), 0) ||
2530 nlmsg_append(msg, &ext_req, sizeof(ext_req), NLMSG_ALIGNTO) ||
2531 nlmsg_append(msg, &filter, sizeof(filter), 0))
2532 goto free;
2533
2534 vlist_for_each_element(&dev->vlans, vlan, node) {
2535 struct bridge_vlan_hotplug_port *port;
2536
2537 for (i = 0; i < vlan->n_ports; i++) {
2538 if (!strcmp(vlan->ports[i].ifname, ifname))
2539 vlan->ports[i].check = 0;
2540 else
2541 vlan->ports[i].check = -1;
2542 }
2543
2544 list_for_each_entry(port, &vlan->hotplug_ports, list) {
2545 if (!strcmp(port->port.ifname, ifname))
2546 port->port.check = 0;
2547 else
2548 port->port.check = -1;
2549 }
2550 }
2551
2552 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, bridge_vlan_check_cb, &data);
2553 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, bridge_vlan_ack_cb, &data);
2554 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, bridge_vlan_ack_cb, &data);
2555 nl_cb_err(cb, NL_CB_CUSTOM, bridge_vlan_error_cb, &data);
2556
2557 if (nl_send_auto_complete(sock_rtnl, msg) < 0)
2558 goto free;
2559
2560 data.ret = 0;
2561 while (data.pending)
2562 nl_recvmsgs(sock_rtnl, cb);
2563
2564 vlist_for_each_element(&dev->vlans, vlan, node) {
2565 struct bridge_vlan_hotplug_port *port;
2566
2567 for (i = 0; i < vlan->n_ports; i++) {
2568 if (!vlan->ports[i].check) {
2569 data.ret = 1;
2570 break;
2571 }
2572 }
2573
2574 list_for_each_entry(port, &vlan->hotplug_ports, list) {
2575 if (!port->port.check) {
2576 data.ret = 1;
2577 break;
2578 }
2579 }
2580 }
2581
2582 free:
2583 nlmsg_free(msg);
2584 nl_cb_put(cb);
2585 return data.ret;
2586 }
2587
2588 int system_if_check(struct device *dev)
2589 {
2590 struct nl_cb *cb = nl_cb_alloc(NL_CB_DEFAULT);
2591 struct nl_msg *msg;
2592 struct ifinfomsg ifi = {
2593 .ifi_family = AF_UNSPEC,
2594 .ifi_index = 0,
2595 };
2596 struct if_check_data chk = {
2597 .dev = dev,
2598 .pending = 1,
2599 };
2600 int ret = 1;
2601
2602 if (!cb)
2603 return ret;
2604
2605 msg = nlmsg_alloc_simple(RTM_GETLINK, 0);
2606 if (!msg)
2607 goto out;
2608
2609 if (nlmsg_append(msg, &ifi, sizeof(ifi), 0) ||
2610 nla_put_string(msg, IFLA_IFNAME, dev->ifname))
2611 goto free;
2612
2613 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, cb_if_check_valid, &chk);
2614 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, cb_if_check_ack, &chk);
2615 nl_cb_err(cb, NL_CB_CUSTOM, cb_if_check_error, &chk);
2616
2617 ret = nl_send_auto_complete(sock_rtnl, msg);
2618 if (ret < 0)
2619 goto free;
2620
2621 while (chk.pending > 0)
2622 nl_recvmsgs(sock_rtnl, cb);
2623
2624 ret = chk.pending;
2625
2626 free:
2627 nlmsg_free(msg);
2628 out:
2629 nl_cb_put(cb);
2630 return ret;
2631 }
2632
2633 struct device *
2634 system_if_get_parent(struct device *dev)
2635 {
2636 char buf[64], *devname;
2637 int ifindex, iflink;
2638
2639 if (system_get_dev_sysfs("iflink", dev->ifname, buf, sizeof(buf)) < 0)
2640 return NULL;
2641
2642 iflink = strtoul(buf, NULL, 0);
2643 ifindex = system_if_resolve(dev);
2644 if (!iflink || iflink == ifindex)
2645 return NULL;
2646
2647 devname = if_indextoname(iflink, buf);
2648 if (!devname)
2649 return NULL;
2650
2651 return device_get(devname, true);
2652 }
2653
2654 static bool
2655 read_string_file(int dir_fd, const char *file, char *buf, int len)
2656 {
2657 bool ret = false;
2658 char *c;
2659 int fd;
2660
2661 fd = openat(dir_fd, file, O_RDONLY);
2662 if (fd < 0)
2663 return false;
2664
2665 retry:
2666 len = read(fd, buf, len - 1);
2667 if (len < 0) {
2668 if (errno == EINTR)
2669 goto retry;
2670 } else if (len > 0) {
2671 buf[len] = 0;
2672
2673 c = strchr(buf, '\n');
2674 if (c)
2675 *c = 0;
2676
2677 ret = true;
2678 }
2679
2680 close(fd);
2681
2682 return ret;
2683 }
2684
2685 static bool
2686 read_uint64_file(int dir_fd, const char *file, uint64_t *val)
2687 {
2688 char buf[64];
2689 bool ret = false;
2690
2691 ret = read_string_file(dir_fd, file, buf, sizeof(buf));
2692 if (ret)
2693 *val = strtoull(buf, NULL, 0);
2694
2695 return ret;
2696 }
2697
2698 bool
2699 system_if_force_external(const char *ifname)
2700 {
2701 struct stat s;
2702
2703 return stat(dev_sysfs_path(ifname, "phy80211"), &s) == 0;
2704 }
2705
2706 static const char *
2707 system_netdevtype_name(unsigned short dev_type)
2708 {
2709 size_t i;
2710
2711 for (i = 0; i < ARRAY_SIZE(netdev_types); i++) {
2712 if (netdev_types[i].id == dev_type)
2713 return netdev_types[i].name;
2714 }
2715
2716 /* the last key is used by default */
2717 i = ARRAY_SIZE(netdev_types) - 1;
2718
2719 return netdev_types[i].name;
2720 }
2721
2722 static void
2723 system_add_devtype(struct blob_buf *b, const char *ifname)
2724 {
2725 char buf[100];
2726 bool found = false;
2727
2728 if (!system_get_dev_sysfs("uevent", ifname, buf, sizeof(buf))) {
2729 const char *info = "DEVTYPE=";
2730 char *context = NULL;
2731 const char *line = strtok_r(buf, "\r\n", &context);
2732
2733 while (line != NULL) {
2734 char *index = strstr(line, info);
2735
2736 if (index != NULL) {
2737 blobmsg_add_string(b, "devtype", index + strlen(info));
2738 found = true;
2739 break;
2740 }
2741
2742 line = strtok_r(NULL, "\r\n", &context);
2743 }
2744 }
2745
2746 if (!found) {
2747 unsigned short number = 0;
2748 const char *name = NULL;
2749
2750 if (!system_get_dev_sysfs("type", ifname, buf, sizeof(buf))) {
2751 number = strtoul(buf, NULL, 0);
2752 name = system_netdevtype_name(number);
2753 blobmsg_add_string(b, "devtype", name);
2754 }
2755 }
2756 }
2757
2758 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
2759
2760 static int32_t
2761 ethtool_feature_count(const char *ifname)
2762 {
2763 struct {
2764 struct ethtool_sset_info hdr;
2765 uint32_t buf;
2766 } req = {
2767 .hdr = {
2768 .cmd = ETHTOOL_GSSET_INFO,
2769 .sset_mask = 1 << ETH_SS_FEATURES
2770 }
2771 };
2772
2773 struct ifreq ifr = {
2774 .ifr_data = (void *)&req
2775 };
2776
2777 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1);
2778
2779 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) != 0)
2780 return -1;
2781
2782 if (!req.hdr.sset_mask)
2783 return 0;
2784
2785 return req.buf;
2786 }
2787
2788 static int32_t
2789 ethtool_feature_index(const char *ifname, const char *keyname)
2790 {
2791 struct ethtool_gstrings *feature_names;
2792 struct ifreq ifr = { 0 };
2793 int32_t n_features;
2794 uint32_t i;
2795
2796 n_features = ethtool_feature_count(ifname);
2797
2798 if (n_features <= 0)
2799 return -1;
2800
2801 feature_names = calloc(1, sizeof(*feature_names) + n_features * ETH_GSTRING_LEN);
2802
2803 if (!feature_names)
2804 return -1;
2805
2806 feature_names->cmd = ETHTOOL_GSTRINGS;
2807 feature_names->string_set = ETH_SS_FEATURES;
2808 feature_names->len = n_features;
2809
2810 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1);
2811 ifr.ifr_data = (void *)feature_names;
2812
2813 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) != 0) {
2814 free(feature_names);
2815
2816 return -1;
2817 }
2818
2819 for (i = 0; i < feature_names->len; i++)
2820 if (!strcmp((char *)&feature_names->data[i * ETH_GSTRING_LEN], keyname))
2821 break;
2822
2823 if (i >= feature_names->len)
2824 i = -1;
2825
2826 free(feature_names);
2827
2828 return i;
2829 }
2830
2831 static bool
2832 ethtool_feature_value(const char *ifname, const char *keyname)
2833 {
2834 struct ethtool_get_features_block *feature_block;
2835 struct ethtool_gfeatures *feature_values;
2836 struct ifreq ifr = { 0 };
2837 int32_t feature_idx;
2838 bool active;
2839
2840 feature_idx = ethtool_feature_index(ifname, keyname);
2841
2842 if (feature_idx < 0)
2843 return false;
2844
2845 feature_values = calloc(1,
2846 sizeof(*feature_values) +
2847 sizeof(feature_values->features[0]) * DIV_ROUND_UP(feature_idx, 32));
2848
2849 if (!feature_values)
2850 return false;
2851
2852 feature_values->cmd = ETHTOOL_GFEATURES;
2853 feature_values->size = DIV_ROUND_UP(feature_idx, 32);
2854
2855 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1);
2856 ifr.ifr_data = (void *)feature_values;
2857
2858 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) != 0) {
2859 free(feature_values);
2860
2861 return false;
2862 }
2863
2864 feature_block = &feature_values->features[feature_idx / 32];
2865 active = feature_block->active & (1U << feature_idx % 32);
2866
2867 free(feature_values);
2868
2869 return active;
2870 }
2871
2872 static void
2873 system_add_link_mode_name(struct blob_buf *b, int i, bool half)
2874 {
2875 char *buf;
2876
2877 /* allocate string buffer large enough for the mode name and a suffix
2878 * "-F" or "-H" indicating full duplex or half duplex.
2879 */
2880 buf = blobmsg_alloc_string_buffer(b, NULL, strlen(ethtool_modes[i].name) + 3);
2881 if (!buf)
2882 return;
2883
2884 strcpy(buf, ethtool_modes[i].name);
2885 if (half)
2886 strcat(buf, "-H");
2887 else
2888 strcat(buf, "-F");
2889
2890 blobmsg_add_string_buffer(b);
2891 }
2892
2893 static void
2894 system_add_link_modes(__s8 nwords, struct blob_buf *b, __u32 *mask)
2895 {
2896 size_t i;
2897
2898 for (i = 0; i < ARRAY_SIZE(ethtool_modes); i++) {
2899 if (ethtool_link_mode_test_bit(nwords, ethtool_modes[i].bit_half, mask))
2900 system_add_link_mode_name(b, i, true);
2901
2902 if (ethtool_link_mode_test_bit(nwords, ethtool_modes[i].bit_full, mask))
2903 system_add_link_mode_name(b, i, false);
2904 }
2905 }
2906
2907 static void
2908 system_add_pause_modes(__s8 nwords, struct blob_buf *b, __u32 *mask)
2909 {
2910 if (ethtool_link_mode_test_bit(nwords, ETHTOOL_LINK_MODE_Pause_BIT, mask))
2911 blobmsg_add_string(b, NULL, "pause");
2912
2913 if (ethtool_link_mode_test_bit(nwords, ETHTOOL_LINK_MODE_Asym_Pause_BIT, mask))
2914 blobmsg_add_string(b, NULL, "asym_pause");
2915 }
2916
2917
2918 static void
2919 system_add_ethtool_pause_an(struct blob_buf *b, __s8 nwords,
2920 __u32 *advertising, __u32 *lp_advertising)
2921 {
2922 bool an_rx = false, an_tx = false;
2923 void *d;
2924
2925 d = blobmsg_open_array(b, "negotiated");
2926
2927 /* Work out negotiated pause frame usage per
2928 * IEEE 802.3-2005 table 28B-3.
2929 */
2930 if (ethtool_link_mode_test_bit(nwords,
2931 ETHTOOL_LINK_MODE_Pause_BIT,
2932 advertising) &&
2933 ethtool_link_mode_test_bit(nwords,
2934 ETHTOOL_LINK_MODE_Pause_BIT,
2935 lp_advertising)) {
2936 an_tx = true;
2937 an_rx = true;
2938 } else if (ethtool_link_mode_test_bit(nwords,
2939 ETHTOOL_LINK_MODE_Asym_Pause_BIT,
2940 advertising) &&
2941 ethtool_link_mode_test_bit(nwords,
2942 ETHTOOL_LINK_MODE_Asym_Pause_BIT,
2943 lp_advertising)) {
2944 if (ethtool_link_mode_test_bit(nwords,
2945 ETHTOOL_LINK_MODE_Pause_BIT,
2946 advertising))
2947 an_rx = true;
2948 else if (ethtool_link_mode_test_bit(nwords,
2949 ETHTOOL_LINK_MODE_Pause_BIT,
2950 lp_advertising))
2951 an_tx = true;
2952 }
2953 if (an_tx)
2954 blobmsg_add_string(b, NULL, "rx");
2955
2956 if (an_rx)
2957 blobmsg_add_string(b, NULL, "tx");
2958
2959 blobmsg_close_array(b, d);
2960 }
2961
2962 static void
2963 system_get_ethtool_pause(struct device *dev, bool *rx_pause, bool *tx_pause, bool *pause_autoneg)
2964 {
2965 struct ethtool_pauseparam pp;
2966 struct ifreq ifr = {
2967 .ifr_data = (caddr_t)&pp,
2968 };
2969
2970 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
2971 memset(&pp, 0, sizeof(pp));
2972 pp.cmd = ETHTOOL_GPAUSEPARAM;
2973
2974 /* may fail */
2975 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) == -1) {
2976 *pause_autoneg = true;
2977 return;
2978 }
2979
2980 *rx_pause = pp.rx_pause;
2981 *tx_pause = pp.tx_pause;
2982 *pause_autoneg = pp.autoneg;
2983 }
2984
2985 int
2986 system_if_dump_info(struct device *dev, struct blob_buf *b)
2987 {
2988 __u32 *supported, *advertising, *lp_advertising;
2989 bool rx_pause, tx_pause, pause_autoneg;
2990 struct {
2991 struct ethtool_link_settings req;
2992 __u32 link_mode_data[3 * 127];
2993 } ecmd;
2994 struct ifreq ifr = {
2995 .ifr_data = (caddr_t)&ecmd,
2996 };
2997 __s8 nwords;
2998 void *c, *d;
2999 char *s;
3000
3001 system_get_ethtool_pause(dev, &rx_pause, &tx_pause, &pause_autoneg);
3002
3003 memset(&ecmd, 0, sizeof(ecmd));
3004 ecmd.req.cmd = ETHTOOL_GLINKSETTINGS;
3005 strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
3006
3007 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) < 0 ||
3008 ecmd.req.link_mode_masks_nwords >= 0 ||
3009 ecmd.req.cmd != ETHTOOL_GLINKSETTINGS)
3010 return -EOPNOTSUPP;
3011
3012 ecmd.req.link_mode_masks_nwords = -ecmd.req.link_mode_masks_nwords;
3013
3014 if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) < 0 ||
3015 ecmd.req.link_mode_masks_nwords <= 0 ||
3016 ecmd.req.cmd != ETHTOOL_GLINKSETTINGS)
3017 return -EIO;
3018
3019 nwords = ecmd.req.link_mode_masks_nwords;
3020 supported = &ecmd.link_mode_data[0];
3021 advertising = &ecmd.link_mode_data[nwords];
3022 lp_advertising = &ecmd.link_mode_data[2 * nwords];
3023
3024 c = blobmsg_open_array(b, "link-advertising");
3025 system_add_link_modes(nwords, b, advertising);
3026 blobmsg_close_array(b, c);
3027
3028 c = blobmsg_open_array(b, "link-partner-advertising");
3029 system_add_link_modes(nwords, b, lp_advertising);
3030 blobmsg_close_array(b, c);
3031
3032 c = blobmsg_open_array(b, "link-supported");
3033 system_add_link_modes(nwords, b, supported);
3034 blobmsg_close_array(b, c);
3035
3036 if (ethtool_validate_speed(ecmd.req.speed) &&
3037 (ecmd.req.speed != (__u32)SPEED_UNKNOWN) &&
3038 (ecmd.req.speed != 0)) {
3039 s = blobmsg_alloc_string_buffer(b, "speed", 10);
3040 snprintf(s, 8, "%d%c", ecmd.req.speed,
3041 ecmd.req.duplex == DUPLEX_HALF ? 'H' : 'F');
3042 blobmsg_add_string_buffer(b);
3043 }
3044 blobmsg_add_u8(b, "autoneg", !!ecmd.req.autoneg);
3045
3046 c = blobmsg_open_table(b, "flow-control");
3047 blobmsg_add_u8(b, "autoneg", pause_autoneg);
3048
3049 d = blobmsg_open_array(b, "supported");
3050 system_add_pause_modes(nwords, b, supported);
3051 blobmsg_close_array(b, d);
3052
3053 if (pause_autoneg) {
3054 d = blobmsg_open_array(b, "link-advertising");
3055 system_add_pause_modes(nwords, b, advertising);
3056 blobmsg_close_array(b, d);
3057 }
3058
3059 d = blobmsg_open_array(b, "link-partner-advertising");
3060 system_add_pause_modes(nwords, b, lp_advertising);
3061 blobmsg_close_array(b, d);
3062
3063 if (pause_autoneg) {
3064 system_add_ethtool_pause_an(b, nwords, advertising,
3065 lp_advertising);
3066 } else {
3067 d = blobmsg_open_array(b, "selected");
3068 if (rx_pause)
3069 blobmsg_add_string(b, NULL, "rx");
3070
3071 if (tx_pause)
3072 blobmsg_add_string(b, NULL, "tx");
3073
3074 blobmsg_close_array(b, d);
3075 }
3076
3077 blobmsg_close_table(b, c);
3078
3079 blobmsg_add_u8(b, "hw-tc-offload",
3080 ethtool_feature_value(dev->ifname, "hw-tc-offload"));
3081
3082 system_add_devtype(b, dev->ifname);
3083
3084 return 0;
3085 }
3086
3087 int
3088 system_if_dump_stats(struct device *dev, struct blob_buf *b)
3089 {
3090 const char *const counters[] = {
3091 "collisions", "rx_frame_errors", "tx_compressed",
3092 "multicast", "rx_length_errors", "tx_dropped",
3093 "rx_bytes", "rx_missed_errors", "tx_errors",
3094 "rx_compressed", "rx_over_errors", "tx_fifo_errors",
3095 "rx_crc_errors", "rx_packets", "tx_heartbeat_errors",
3096 "rx_dropped", "tx_aborted_errors", "tx_packets",
3097 "rx_errors", "tx_bytes", "tx_window_errors",
3098 "rx_fifo_errors", "tx_carrier_errors",
3099 };
3100 int stats_dir;
3101 size_t i;
3102 uint64_t val = 0;
3103
3104 stats_dir = open(dev_sysfs_path(dev->ifname, "statistics"), O_DIRECTORY);
3105 if (stats_dir < 0)
3106 return -1;
3107
3108 for (i = 0; i < ARRAY_SIZE(counters); i++)
3109 if (read_uint64_file(stats_dir, counters[i], &val))
3110 blobmsg_add_u64(b, counters[i], val);
3111
3112 close(stats_dir);
3113 return 0;
3114 }
3115
3116 static int system_addr(struct device *dev, struct device_addr *addr, int cmd)
3117 {
3118 bool v4 = ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET4);
3119 int alen = v4 ? 4 : 16;
3120 unsigned int flags = 0;
3121 struct ifaddrmsg ifa = {
3122 .ifa_family = (alen == 4) ? AF_INET : AF_INET6,
3123 .ifa_prefixlen = addr->mask,
3124 .ifa_index = dev->ifindex,
3125 };
3126
3127 struct nl_msg *msg;
3128 if (cmd == RTM_NEWADDR)
3129 flags |= NLM_F_CREATE | NLM_F_REPLACE;
3130
3131 msg = nlmsg_alloc_simple(cmd, flags);
3132 if (!msg)
3133 return -1;
3134
3135 nlmsg_append(msg, &ifa, sizeof(ifa), 0);
3136 nla_put(msg, IFA_LOCAL, alen, &addr->addr);
3137 if (v4) {
3138 if (addr->broadcast)
3139 nla_put_u32(msg, IFA_BROADCAST, addr->broadcast);
3140 if (addr->point_to_point)
3141 nla_put_u32(msg, IFA_ADDRESS, addr->point_to_point);
3142 } else {
3143 time_t now = system_get_rtime();
3144 struct ifa_cacheinfo cinfo = {0xffffffffU, 0xffffffffU, 0, 0};
3145
3146 if (addr->preferred_until) {
3147 int64_t preferred = addr->preferred_until - now;
3148 if (preferred < 0)
3149 preferred = 0;
3150 else if (preferred > UINT32_MAX)
3151 preferred = UINT32_MAX;
3152
3153 cinfo.ifa_prefered = preferred;
3154 }
3155
3156 if (addr->valid_until) {
3157 int64_t valid = addr->valid_until - now;
3158 if (valid <= 0) {
3159 nlmsg_free(msg);
3160 return -1;
3161 }
3162 else if (valid > UINT32_MAX)
3163 valid = UINT32_MAX;
3164
3165 cinfo.ifa_valid = valid;
3166 }
3167
3168 nla_put(msg, IFA_CACHEINFO, sizeof(cinfo), &cinfo);
3169
3170 if (cmd == RTM_NEWADDR && (addr->flags & DEVADDR_OFFLINK))
3171 nla_put_u32(msg, IFA_FLAGS, IFA_F_NOPREFIXROUTE);
3172 }
3173
3174 return system_rtnl_call(msg);
3175 }
3176
3177 int system_add_address(struct device *dev, struct device_addr *addr)
3178 {
3179 return system_addr(dev, addr, RTM_NEWADDR);
3180 }
3181
3182 int system_del_address(struct device *dev, struct device_addr *addr)
3183 {
3184 return system_addr(dev, addr, RTM_DELADDR);
3185 }
3186
3187 static int system_neigh(struct device *dev, struct device_neighbor *neighbor, int cmd)
3188 {
3189 int alen = ((neighbor->flags & DEVADDR_FAMILY) == DEVADDR_INET4) ? 4 : 16;
3190 unsigned int flags = 0;
3191 struct ndmsg ndm = {
3192 .ndm_family = (alen == 4) ? AF_INET : AF_INET6,
3193 .ndm_ifindex = dev->ifindex,
3194 .ndm_state = NUD_PERMANENT,
3195 .ndm_flags = (neighbor->proxy ? NTF_PROXY : 0) | (neighbor->router ? NTF_ROUTER : 0),
3196 };
3197 struct nl_msg *msg;
3198
3199 if (cmd == RTM_NEWNEIGH)
3200 flags |= NLM_F_CREATE | NLM_F_REPLACE;
3201
3202 msg = nlmsg_alloc_simple(cmd, flags);
3203
3204 if (!msg)
3205 return -1;
3206
3207 nlmsg_append(msg, &ndm, sizeof(ndm), 0);
3208
3209 nla_put(msg, NDA_DST, alen, &neighbor->addr);
3210 if (neighbor->flags & DEVNEIGH_MAC)
3211 nla_put(msg, NDA_LLADDR, sizeof(neighbor->macaddr), &neighbor->macaddr);
3212
3213
3214 return system_rtnl_call(msg);
3215 }
3216
3217 int system_add_neighbor(struct device *dev, struct device_neighbor *neighbor)
3218 {
3219 return system_neigh(dev, neighbor, RTM_NEWNEIGH);
3220 }
3221
3222 int system_del_neighbor(struct device *dev, struct device_neighbor *neighbor)
3223 {
3224 return system_neigh(dev, neighbor, RTM_DELNEIGH);
3225 }
3226
3227 static int system_rt(struct device *dev, struct device_route *route, int cmd)
3228 {
3229 int alen = ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET4) ? 4 : 16;
3230 bool have_gw;
3231 unsigned int flags = 0;
3232
3233 if (alen == 4)
3234 have_gw = !!route->nexthop.in.s_addr;
3235 else
3236 have_gw = route->nexthop.in6.s6_addr32[0] ||
3237 route->nexthop.in6.s6_addr32[1] ||
3238 route->nexthop.in6.s6_addr32[2] ||
3239 route->nexthop.in6.s6_addr32[3];
3240
3241 unsigned int table = (route->flags & (DEVROUTE_TABLE | DEVROUTE_SRCTABLE))
3242 ? route->table : RT_TABLE_MAIN;
3243
3244 struct rtmsg rtm = {
3245 .rtm_family = (alen == 4) ? AF_INET : AF_INET6,
3246 .rtm_dst_len = route->mask,
3247 .rtm_src_len = route->sourcemask,
3248 .rtm_table = (table < 256) ? table : RT_TABLE_UNSPEC,
3249 .rtm_protocol = (route->flags & DEVROUTE_PROTO) ? route->proto : RTPROT_STATIC,
3250 .rtm_scope = RT_SCOPE_NOWHERE,
3251 .rtm_type = (cmd == RTM_DELROUTE) ? 0: RTN_UNICAST,
3252 .rtm_flags = (route->flags & DEVROUTE_ONLINK) ? RTNH_F_ONLINK : 0,
3253 };
3254 struct nl_msg *msg;
3255
3256 if (cmd == RTM_NEWROUTE) {
3257 flags |= NLM_F_CREATE | NLM_F_REPLACE;
3258
3259 if (!dev) { /* Add null-route */
3260 rtm.rtm_scope = RT_SCOPE_UNIVERSE;
3261 rtm.rtm_type = RTN_UNREACHABLE;
3262 }
3263 else
3264 rtm.rtm_scope = (have_gw) ? RT_SCOPE_UNIVERSE : RT_SCOPE_LINK;
3265 }
3266
3267 if (route->flags & DEVROUTE_TYPE) {
3268 rtm.rtm_type = route->type;
3269 if (!(route->flags & (DEVROUTE_TABLE | DEVROUTE_SRCTABLE))) {
3270 if (rtm.rtm_type == RTN_LOCAL || rtm.rtm_type == RTN_BROADCAST ||
3271 rtm.rtm_type == RTN_NAT || rtm.rtm_type == RTN_ANYCAST)
3272 rtm.rtm_table = RT_TABLE_LOCAL;
3273 }
3274
3275 if (rtm.rtm_type == RTN_LOCAL || rtm.rtm_type == RTN_NAT) {
3276 rtm.rtm_scope = RT_SCOPE_HOST;
3277 } else if (rtm.rtm_type == RTN_BROADCAST || rtm.rtm_type == RTN_MULTICAST ||
3278 rtm.rtm_type == RTN_ANYCAST) {
3279 rtm.rtm_scope = RT_SCOPE_LINK;
3280 } else if (rtm.rtm_type == RTN_BLACKHOLE || rtm.rtm_type == RTN_UNREACHABLE ||
3281 rtm.rtm_type == RTN_PROHIBIT || rtm.rtm_type == RTN_FAILED_POLICY ||
3282 rtm.rtm_type == RTN_THROW) {
3283 rtm.rtm_scope = RT_SCOPE_UNIVERSE;
3284 dev = NULL;
3285 }
3286 }
3287
3288 if (route->flags & DEVROUTE_NODEV)
3289 dev = NULL;
3290
3291 msg = nlmsg_alloc_simple(cmd, flags);
3292 if (!msg)
3293 return -1;
3294
3295 nlmsg_append(msg, &rtm, sizeof(rtm), 0);
3296
3297 if (route->mask)
3298 nla_put(msg, RTA_DST, alen, &route->addr);
3299
3300 if (route->sourcemask) {
3301 if (rtm.rtm_family == AF_INET)
3302 nla_put(msg, RTA_PREFSRC, alen, &route->source);
3303 else
3304 nla_put(msg, RTA_SRC, alen, &route->source);
3305 }
3306
3307 if (route->metric > 0)
3308 nla_put_u32(msg, RTA_PRIORITY, route->metric);
3309
3310 if (have_gw)
3311 nla_put(msg, RTA_GATEWAY, alen, &route->nexthop);
3312
3313 if (dev)
3314 nla_put_u32(msg, RTA_OIF, dev->ifindex);
3315
3316 if (table >= 256)
3317 nla_put_u32(msg, RTA_TABLE, table);
3318
3319 if (route->flags & DEVROUTE_MTU) {
3320 struct nlattr *metrics;
3321
3322 if (!(metrics = nla_nest_start(msg, RTA_METRICS)))
3323 goto nla_put_failure;
3324
3325 nla_put_u32(msg, RTAX_MTU, route->mtu);
3326
3327 nla_nest_end(msg, metrics);
3328 }
3329
3330 return system_rtnl_call(msg);
3331
3332 nla_put_failure:
3333 nlmsg_free(msg);
3334 return -ENOMEM;
3335 }
3336
3337 int system_add_route(struct device *dev, struct device_route *route)
3338 {
3339 return system_rt(dev, route, RTM_NEWROUTE);
3340 }
3341
3342 int system_del_route(struct device *dev, struct device_route *route)
3343 {
3344 return system_rt(dev, route, RTM_DELROUTE);
3345 }
3346
3347 int system_flush_routes(void)
3348 {
3349 const char *names[] = { "ipv4", "ipv6" };
3350 size_t i;
3351 int fd;
3352
3353 for (i = 0; i < ARRAY_SIZE(names); i++) {
3354 snprintf(dev_buf, sizeof(dev_buf), "%s/sys/net/%s/route/flush", proc_path, names[i]);
3355 fd = open(dev_buf, O_WRONLY);
3356 if (fd < 0)
3357 continue;
3358
3359 if (write(fd, "-1", 2)) {}
3360 close(fd);
3361 }
3362 return 0;
3363 }
3364
3365 bool system_resolve_rt_type(const char *type, unsigned int *id)
3366 {
3367 return system_rtn_aton(type, id);
3368 }
3369
3370 bool system_resolve_rt_proto(const char *type, unsigned int *id)
3371 {
3372 FILE *f;
3373 char *e, buf[128];
3374 unsigned int n, proto = 256;
3375 n = strtoul(type, &e, 0);
3376 if (!*e && e != type)
3377 proto = n;
3378 else if (!strcmp(type, "unspec"))
3379 proto = RTPROT_UNSPEC;
3380 else if (!strcmp(type, "kernel"))
3381 proto = RTPROT_KERNEL;
3382 else if (!strcmp(type, "boot"))
3383 proto = RTPROT_BOOT;
3384 else if (!strcmp(type, "static"))
3385 proto = RTPROT_STATIC;
3386 else if ((f = fopen("/etc/iproute2/rt_protos", "r")) != NULL) {
3387 while (fgets(buf, sizeof(buf) - 1, f) != NULL) {
3388 if ((e = strtok(buf, " \t\n")) == NULL || *e == '#')
3389 continue;
3390
3391 n = strtoul(e, NULL, 10);
3392 e = strtok(NULL, " \t\n");
3393
3394 if (e && !strcmp(e, type)) {
3395 proto = n;
3396 break;
3397 }
3398 }
3399 fclose(f);
3400 }
3401
3402 if (proto > 255)
3403 return false;
3404
3405 *id = proto;
3406 return true;
3407 }
3408
3409 bool system_resolve_rt_table(const char *name, unsigned int *id)
3410 {
3411 FILE *f;
3412 char *e, buf[128];
3413 unsigned int n, table = RT_TABLE_UNSPEC;
3414
3415 /* first try to parse table as number */
3416 if ((n = strtoul(name, &e, 0)) > 0 && !*e)
3417 table = n;
3418
3419 /* handle well known aliases */
3420 else if (!strcmp(name, "default"))
3421 table = RT_TABLE_DEFAULT;
3422 else if (!strcmp(name, "main"))
3423 table = RT_TABLE_MAIN;
3424 else if (!strcmp(name, "local"))
3425 table = RT_TABLE_LOCAL;
3426
3427 /* try to look up name in /etc/iproute2/rt_tables */
3428 else if ((f = fopen("/etc/iproute2/rt_tables", "r")) != NULL)
3429 {
3430 while (fgets(buf, sizeof(buf) - 1, f) != NULL)
3431 {
3432 if ((e = strtok(buf, " \t\n")) == NULL || *e == '#')
3433 continue;
3434
3435 n = strtoul(e, NULL, 10);
3436 e = strtok(NULL, " \t\n");
3437
3438 if (e && !strcmp(e, name))
3439 {
3440 table = n;
3441 break;
3442 }
3443 }
3444
3445 fclose(f);
3446 }
3447
3448 if (table == RT_TABLE_UNSPEC)
3449 return false;
3450
3451 *id = table;
3452 return true;
3453 }
3454
3455 bool system_is_default_rt_table(unsigned int id)
3456 {
3457 return (id == RT_TABLE_MAIN);
3458 }
3459
3460 bool system_resolve_rpfilter(const char *filter, unsigned int *id)
3461 {
3462 char *e;
3463 unsigned int n;
3464
3465 if (!strcmp(filter, "strict"))
3466 n = 1;
3467 else if (!strcmp(filter, "loose"))
3468 n = 2;
3469 else {
3470 n = strtoul(filter, &e, 0);
3471 if (*e || e == filter || n > 2)
3472 return false;
3473 }
3474
3475 *id = n;
3476 return true;
3477 }
3478
3479 static int system_iprule(struct iprule *rule, int cmd)
3480 {
3481 int alen = ((rule->flags & IPRULE_FAMILY) == IPRULE_INET4) ? 4 : 16;
3482
3483 struct nl_msg *msg;
3484 struct rtmsg rtm = {
3485 .rtm_family = (alen == 4) ? AF_INET : AF_INET6,
3486 .rtm_protocol = RTPROT_STATIC,
3487 .rtm_scope = RT_SCOPE_UNIVERSE,
3488 .rtm_table = RT_TABLE_UNSPEC,
3489 .rtm_type = RTN_UNSPEC,
3490 .rtm_flags = 0,
3491 };
3492
3493 if (cmd == RTM_NEWRULE)
3494 rtm.rtm_type = RTN_UNICAST;
3495
3496 if (rule->invert)
3497 rtm.rtm_flags |= FIB_RULE_INVERT;
3498
3499 if (rule->flags & IPRULE_SRC)
3500 rtm.rtm_src_len = rule->src_mask;
3501
3502 if (rule->flags & IPRULE_DEST)
3503 rtm.rtm_dst_len = rule->dest_mask;
3504
3505 if (rule->flags & IPRULE_TOS)
3506 rtm.rtm_tos = rule->tos;
3507
3508 if (rule->flags & IPRULE_LOOKUP) {
3509 if (rule->lookup < 256)
3510 rtm.rtm_table = rule->lookup;
3511 }
3512
3513 if (rule->flags & IPRULE_ACTION)
3514 rtm.rtm_type = rule->action;
3515 else if (rule->flags & IPRULE_GOTO)
3516 rtm.rtm_type = FR_ACT_GOTO;
3517 else if (!(rule->flags & (IPRULE_LOOKUP | IPRULE_ACTION | IPRULE_GOTO)))
3518 rtm.rtm_type = FR_ACT_NOP;
3519
3520 msg = nlmsg_alloc_simple(cmd, NLM_F_REQUEST);
3521
3522 if (!msg)
3523 return -1;
3524
3525 nlmsg_append(msg, &rtm, sizeof(rtm), 0);
3526
3527 if (rule->flags & IPRULE_IN)
3528 nla_put(msg, FRA_IFNAME, strlen(rule->in_dev) + 1, rule->in_dev);
3529
3530 if (rule->flags & IPRULE_OUT)
3531 nla_put(msg, FRA_OIFNAME, strlen(rule->out_dev) + 1, rule->out_dev);
3532
3533 if (rule->flags & IPRULE_SRC)
3534 nla_put(msg, FRA_SRC, alen, &rule->src_addr);
3535
3536 if (rule->flags & IPRULE_DEST)
3537 nla_put(msg, FRA_DST, alen, &rule->dest_addr);
3538
3539 if (rule->flags & IPRULE_PRIORITY)
3540 nla_put_u32(msg, FRA_PRIORITY, rule->priority);
3541 else if (cmd == RTM_NEWRULE)
3542 nla_put_u32(msg, FRA_PRIORITY, rule->order);
3543
3544 if (rule->flags & IPRULE_FWMARK)
3545 nla_put_u32(msg, FRA_FWMARK, rule->fwmark);
3546
3547 if (rule->flags & IPRULE_FWMASK)
3548 nla_put_u32(msg, FRA_FWMASK, rule->fwmask);
3549
3550 if (rule->flags & IPRULE_LOOKUP) {
3551 if (rule->lookup >= 256)
3552 nla_put_u32(msg, FRA_TABLE, rule->lookup);
3553 }
3554
3555 if (rule->flags & IPRULE_SUP_PREFIXLEN)
3556 nla_put_u32(msg, FRA_SUPPRESS_PREFIXLEN, rule->sup_prefixlen);
3557
3558 if (rule->flags & IPRULE_UIDRANGE) {
3559 struct fib_rule_uid_range uidrange = {
3560 .start = rule->uidrange_start,
3561 .end = rule->uidrange_end
3562 };
3563
3564 nla_put(msg, FRA_UID_RANGE, sizeof(uidrange), &uidrange);
3565 }
3566
3567 if (rule->flags & IPRULE_GOTO)
3568 nla_put_u32(msg, FRA_GOTO, rule->gotoid);
3569
3570 return system_rtnl_call(msg);
3571 }
3572
3573 int system_add_iprule(struct iprule *rule)
3574 {
3575 return system_iprule(rule, RTM_NEWRULE);
3576 }
3577
3578 int system_del_iprule(struct iprule *rule)
3579 {
3580 return system_iprule(rule, RTM_DELRULE);
3581 }
3582
3583 int system_flush_iprules(void)
3584 {
3585 int rv = 0;
3586 struct iprule rule;
3587
3588 system_if_clear_entries(NULL, RTM_GETRULE, AF_INET);
3589 system_if_clear_entries(NULL, RTM_GETRULE, AF_INET6);
3590
3591 memset(&rule, 0, sizeof(rule));
3592
3593
3594 rule.flags = IPRULE_INET4 | IPRULE_PRIORITY | IPRULE_LOOKUP;
3595
3596 rule.priority = 0;
3597 rule.lookup = RT_TABLE_LOCAL;
3598 rv |= system_iprule(&rule, RTM_NEWRULE);
3599
3600 rule.priority = 32766;
3601 rule.lookup = RT_TABLE_MAIN;
3602 rv |= system_iprule(&rule, RTM_NEWRULE);
3603
3604 rule.priority = 32767;
3605 rule.lookup = RT_TABLE_DEFAULT;
3606 rv |= system_iprule(&rule, RTM_NEWRULE);
3607
3608
3609 rule.flags = IPRULE_INET6 | IPRULE_PRIORITY | IPRULE_LOOKUP;
3610
3611 rule.priority = 0;
3612 rule.lookup = RT_TABLE_LOCAL;
3613 rv |= system_iprule(&rule, RTM_NEWRULE);
3614
3615 rule.priority = 32766;
3616 rule.lookup = RT_TABLE_MAIN;
3617 rv |= system_iprule(&rule, RTM_NEWRULE);
3618
3619 return rv;
3620 }
3621
3622 bool system_resolve_iprule_action(const char *action, unsigned int *id)
3623 {
3624 return system_rtn_aton(action, id);
3625 }
3626
3627 time_t system_get_rtime(void)
3628 {
3629 struct timespec ts;
3630 struct timeval tv;
3631
3632 if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0)
3633 return ts.tv_sec;
3634
3635 if (gettimeofday(&tv, NULL) == 0)
3636 return tv.tv_sec;
3637
3638 return 0;
3639 }
3640
3641 #ifndef IP_DF
3642 #define IP_DF 0x4000
3643 #endif
3644
3645 static int tunnel_ioctl(const char *name, int cmd, void *p)
3646 {
3647 struct ifreq ifr;
3648
3649 memset(&ifr, 0, sizeof(ifr));
3650 strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name) - 1);
3651 ifr.ifr_ifru.ifru_data = p;
3652 return ioctl(sock_ioctl, cmd, &ifr);
3653 }
3654
3655 #ifdef IFLA_IPTUN_MAX
3656 static int system_add_ip6_tunnel(const char *name, const unsigned int link,
3657 struct blob_attr **tb)
3658 {
3659 struct nl_msg *nlm = nlmsg_alloc_simple(RTM_NEWLINK,
3660 NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
3661 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC };
3662 struct blob_attr *cur;
3663 int ret = 0, ttl = 0;
3664
3665 if (!nlm)
3666 return -1;
3667
3668 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
3669 nla_put_string(nlm, IFLA_IFNAME, name);
3670
3671 if (link)
3672 nla_put_u32(nlm, IFLA_LINK, link);
3673
3674 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
3675 if (!linkinfo) {
3676 ret = -ENOMEM;
3677 goto failure;
3678 }
3679
3680 nla_put_string(nlm, IFLA_INFO_KIND, "ip6tnl");
3681 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
3682 if (!infodata) {
3683 ret = -ENOMEM;
3684 goto failure;
3685 }
3686
3687 if (link)
3688 nla_put_u32(nlm, IFLA_IPTUN_LINK, link);
3689
3690 if ((cur = tb[TUNNEL_ATTR_TTL]))
3691 ttl = blobmsg_get_u32(cur);
3692
3693 nla_put_u8(nlm, IFLA_IPTUN_PROTO, IPPROTO_IPIP);
3694 nla_put_u8(nlm, IFLA_IPTUN_TTL, (ttl) ? ttl : 64);
3695
3696 struct in6_addr in6buf;
3697 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
3698 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
3699 ret = -EINVAL;
3700 goto failure;
3701 }
3702 nla_put(nlm, IFLA_IPTUN_LOCAL, sizeof(in6buf), &in6buf);
3703 }
3704
3705 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
3706 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
3707 ret = -EINVAL;
3708 goto failure;
3709 }
3710 nla_put(nlm, IFLA_IPTUN_REMOTE, sizeof(in6buf), &in6buf);
3711 }
3712
3713 if ((cur = tb[TUNNEL_ATTR_DATA])) {
3714 struct blob_attr *tb_data[__IPIP6_DATA_ATTR_MAX];
3715 uint32_t tun_flags = IP6_TNL_F_IGN_ENCAP_LIMIT;
3716
3717 blobmsg_parse(ipip6_data_attr_list.params, __IPIP6_DATA_ATTR_MAX, tb_data,
3718 blobmsg_data(cur), blobmsg_len(cur));
3719
3720 if ((cur = tb_data[IPIP6_DATA_ENCAPLIMIT])) {
3721 char *str = blobmsg_get_string(cur);
3722
3723 if (strcmp(str, "ignore")) {
3724 char *e;
3725 unsigned encap_limit = strtoul(str, &e, 0);
3726
3727 if (e == str || *e || encap_limit > 255) {
3728 ret = -EINVAL;
3729 goto failure;
3730 }
3731
3732 nla_put_u8(nlm, IFLA_IPTUN_ENCAP_LIMIT, encap_limit);
3733 tun_flags &= ~IP6_TNL_F_IGN_ENCAP_LIMIT;
3734 }
3735 }
3736
3737 #ifdef IFLA_IPTUN_FMR_MAX
3738 if ((cur = tb_data[IPIP6_DATA_FMRS])) {
3739 struct blob_attr *rcur;
3740 unsigned rrem, fmrcnt = 0;
3741 struct nlattr *fmrs = nla_nest_start(nlm, IFLA_IPTUN_FMRS);
3742
3743 if (!fmrs) {
3744 ret = -ENOMEM;
3745 goto failure;
3746 }
3747
3748 blobmsg_for_each_attr(rcur, cur, rrem) {
3749 struct blob_attr *tb_fmr[__FMR_DATA_ATTR_MAX], *tb_cur;
3750 struct in6_addr ip6prefix;
3751 struct in_addr ip4prefix;
3752 unsigned ip4len, ip6len, ealen, offset;
3753
3754 blobmsg_parse(fmr_data_attr_list.params, __FMR_DATA_ATTR_MAX, tb_fmr,
3755 blobmsg_data(rcur), blobmsg_len(rcur));
3756
3757 if (!(tb_cur = tb_fmr[FMR_DATA_PREFIX6]) ||
3758 !parse_ip_and_netmask(AF_INET6,
3759 blobmsg_data(tb_cur), &ip6prefix,
3760 &ip6len)) {
3761 ret = -EINVAL;
3762 goto failure;
3763 }
3764
3765 if (!(tb_cur = tb_fmr[FMR_DATA_PREFIX4]) ||
3766 !parse_ip_and_netmask(AF_INET,
3767 blobmsg_data(tb_cur), &ip4prefix,
3768 &ip4len)) {
3769 ret = -EINVAL;
3770 goto failure;
3771 }
3772
3773 if (!(tb_cur = tb_fmr[FMR_DATA_EALEN])) {
3774 ret = -EINVAL;
3775 goto failure;
3776 }
3777 ealen = blobmsg_get_u32(tb_cur);
3778
3779 if (!(tb_cur = tb_fmr[FMR_DATA_OFFSET])) {
3780 ret = -EINVAL;
3781 goto failure;
3782 }
3783 offset = blobmsg_get_u32(tb_cur);
3784
3785 struct nlattr *rule = nla_nest_start(nlm, ++fmrcnt);
3786 if (!rule) {
3787 ret = -ENOMEM;
3788 goto failure;
3789 }
3790
3791 nla_put(nlm, IFLA_IPTUN_FMR_IP6_PREFIX, sizeof(ip6prefix), &ip6prefix);
3792 nla_put(nlm, IFLA_IPTUN_FMR_IP4_PREFIX, sizeof(ip4prefix), &ip4prefix);
3793 nla_put_u8(nlm, IFLA_IPTUN_FMR_IP6_PREFIX_LEN, ip6len);
3794 nla_put_u8(nlm, IFLA_IPTUN_FMR_IP4_PREFIX_LEN, ip4len);
3795 nla_put_u8(nlm, IFLA_IPTUN_FMR_EA_LEN, ealen);
3796 nla_put_u8(nlm, IFLA_IPTUN_FMR_OFFSET, offset);
3797
3798 nla_nest_end(nlm, rule);
3799 }
3800
3801 nla_nest_end(nlm, fmrs);
3802 }
3803 #endif
3804 if (tun_flags)
3805 nla_put_u32(nlm, IFLA_IPTUN_FLAGS, tun_flags);
3806 }
3807
3808 nla_nest_end(nlm, infodata);
3809 nla_nest_end(nlm, linkinfo);
3810
3811 return system_rtnl_call(nlm);
3812
3813 failure:
3814 nlmsg_free(nlm);
3815 return ret;
3816 }
3817 #endif
3818
3819 #ifdef IFLA_IPTUN_MAX
3820 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
3821 static int system_add_gre_tunnel(const char *name, const char *kind,
3822 const unsigned int link, struct blob_attr **tb, bool v6)
3823 {
3824 struct nl_msg *nlm;
3825 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
3826 struct blob_attr *cur;
3827 uint32_t ikey = 0, okey = 0, flowinfo = 0, flags6 = IP6_TNL_F_IGN_ENCAP_LIMIT;
3828 uint16_t iflags = 0, oflags = 0;
3829 uint8_t tos = 0;
3830 int ret = 0, ttl = 0;
3831 unsigned encap_limit = 0;
3832
3833 nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
3834 if (!nlm)
3835 return -1;
3836
3837 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
3838 nla_put_string(nlm, IFLA_IFNAME, name);
3839
3840 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
3841 if (!linkinfo) {
3842 ret = -ENOMEM;
3843 goto failure;
3844 }
3845
3846 nla_put_string(nlm, IFLA_INFO_KIND, kind);
3847 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
3848 if (!infodata) {
3849 ret = -ENOMEM;
3850 goto failure;
3851 }
3852
3853 if (link)
3854 nla_put_u32(nlm, IFLA_GRE_LINK, link);
3855
3856 if ((cur = tb[TUNNEL_ATTR_TTL]))
3857 ttl = blobmsg_get_u32(cur);
3858
3859 if ((cur = tb[TUNNEL_ATTR_TOS])) {
3860 char *str = blobmsg_get_string(cur);
3861 if (strcmp(str, "inherit")) {
3862 unsigned uval;
3863
3864 if (!system_tos_aton(str, &uval)) {
3865 ret = -EINVAL;
3866 goto failure;
3867 }
3868
3869 if (v6)
3870 flowinfo |= htonl(uval << 20) & IP6_FLOWINFO_TCLASS;
3871 else
3872 tos = uval;
3873 } else {
3874 if (v6)
3875 flags6 |= IP6_TNL_F_USE_ORIG_TCLASS;
3876 else
3877 tos = 1;
3878 }
3879 }
3880
3881 if ((cur = tb[TUNNEL_ATTR_DATA])) {
3882 struct blob_attr *tb_data[__GRE_DATA_ATTR_MAX];
3883
3884 blobmsg_parse(gre_data_attr_list.params, __GRE_DATA_ATTR_MAX, tb_data,
3885 blobmsg_data(cur), blobmsg_len(cur));
3886
3887 if ((cur = tb_data[GRE_DATA_IKEY])) {
3888 if ((ikey = blobmsg_get_u32(cur)))
3889 iflags |= GRE_KEY;
3890 }
3891
3892 if ((cur = tb_data[GRE_DATA_OKEY])) {
3893 if ((okey = blobmsg_get_u32(cur)))
3894 oflags |= GRE_KEY;
3895 }
3896
3897 if ((cur = tb_data[GRE_DATA_ICSUM])) {
3898 if (blobmsg_get_bool(cur))
3899 iflags |= GRE_CSUM;
3900 }
3901
3902 if ((cur = tb_data[GRE_DATA_OCSUM])) {
3903 if (blobmsg_get_bool(cur))
3904 oflags |= GRE_CSUM;
3905 }
3906
3907 if ((cur = tb_data[GRE_DATA_ISEQNO])) {
3908 if (blobmsg_get_bool(cur))
3909 iflags |= GRE_SEQ;
3910 }
3911
3912 if ((cur = tb_data[GRE_DATA_OSEQNO])) {
3913 if (blobmsg_get_bool(cur))
3914 oflags |= GRE_SEQ;
3915 }
3916
3917 if ((cur = tb_data[GRE_DATA_ENCAPLIMIT])) {
3918 char *str = blobmsg_get_string(cur);
3919
3920 if (strcmp(str, "ignore")) {
3921 char *e;
3922
3923 encap_limit = strtoul(str, &e, 0);
3924
3925 if (e == str || *e || encap_limit > 255) {
3926 ret = -EINVAL;
3927 goto failure;
3928 }
3929
3930 flags6 &= ~IP6_TNL_F_IGN_ENCAP_LIMIT;
3931 }
3932 }
3933 }
3934
3935 if (v6) {
3936 struct in6_addr in6buf;
3937 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
3938 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
3939 ret = -EINVAL;
3940 goto failure;
3941 }
3942 nla_put(nlm, IFLA_GRE_LOCAL, sizeof(in6buf), &in6buf);
3943 }
3944
3945 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
3946 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
3947 ret = -EINVAL;
3948 goto failure;
3949 }
3950 nla_put(nlm, IFLA_GRE_REMOTE, sizeof(in6buf), &in6buf);
3951 }
3952
3953 if (!(flags6 & IP6_TNL_F_IGN_ENCAP_LIMIT))
3954 nla_put_u8(nlm, IFLA_GRE_ENCAP_LIMIT, encap_limit);
3955
3956 if (flowinfo)
3957 nla_put_u32(nlm, IFLA_GRE_FLOWINFO, flowinfo);
3958
3959 if (flags6)
3960 nla_put_u32(nlm, IFLA_GRE_FLAGS, flags6);
3961
3962 if (!ttl)
3963 ttl = 64;
3964 } else {
3965 struct in_addr inbuf;
3966 bool set_df = true;
3967
3968 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
3969 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
3970 ret = -EINVAL;
3971 goto failure;
3972 }
3973 nla_put(nlm, IFLA_GRE_LOCAL, sizeof(inbuf), &inbuf);
3974 }
3975
3976 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
3977 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
3978 ret = -EINVAL;
3979 goto failure;
3980 }
3981 nla_put(nlm, IFLA_GRE_REMOTE, sizeof(inbuf), &inbuf);
3982
3983 if (IN_MULTICAST(ntohl(inbuf.s_addr))) {
3984 if (!okey) {
3985 okey = inbuf.s_addr;
3986 oflags |= GRE_KEY;
3987 }
3988
3989 if (!ikey) {
3990 ikey = inbuf.s_addr;
3991 iflags |= GRE_KEY;
3992 }
3993 }
3994 }
3995
3996 if ((cur = tb[TUNNEL_ATTR_DF]))
3997 set_df = blobmsg_get_bool(cur);
3998
3999 if (!set_df) {
4000 /* ttl != 0 and nopmtudisc are incompatible */
4001 if (ttl) {
4002 ret = -EINVAL;
4003 goto failure;
4004 }
4005 } else if (!ttl)
4006 ttl = 64;
4007
4008 nla_put_u8(nlm, IFLA_GRE_PMTUDISC, set_df ? 1 : 0);
4009
4010 nla_put_u8(nlm, IFLA_GRE_TOS, tos);
4011 }
4012
4013 if (ttl)
4014 nla_put_u8(nlm, IFLA_GRE_TTL, ttl);
4015
4016 if (oflags)
4017 nla_put_u16(nlm, IFLA_GRE_OFLAGS, oflags);
4018
4019 if (iflags)
4020 nla_put_u16(nlm, IFLA_GRE_IFLAGS, iflags);
4021
4022 if (okey)
4023 nla_put_u32(nlm, IFLA_GRE_OKEY, htonl(okey));
4024
4025 if (ikey)
4026 nla_put_u32(nlm, IFLA_GRE_IKEY, htonl(ikey));
4027
4028 nla_nest_end(nlm, infodata);
4029 nla_nest_end(nlm, linkinfo);
4030
4031 return system_rtnl_call(nlm);
4032
4033 failure:
4034 nlmsg_free(nlm);
4035 return ret;
4036 }
4037 #endif
4038
4039 #ifdef IFLA_VTI_MAX
4040 static int system_add_vti_tunnel(const char *name, const char *kind,
4041 const unsigned int link, struct blob_attr **tb, bool v6)
4042 {
4043 struct nl_msg *nlm;
4044 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
4045 struct blob_attr *cur;
4046 int ret = 0;
4047
4048 nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
4049 if (!nlm)
4050 return -1;
4051
4052 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
4053 nla_put_string(nlm, IFLA_IFNAME, name);
4054
4055 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
4056 if (!linkinfo) {
4057 ret = -ENOMEM;
4058 goto failure;
4059 }
4060
4061 nla_put_string(nlm, IFLA_INFO_KIND, kind);
4062 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
4063 if (!infodata) {
4064 ret = -ENOMEM;
4065 goto failure;
4066 }
4067
4068 if (link)
4069 nla_put_u32(nlm, IFLA_VTI_LINK, link);
4070
4071 if (v6) {
4072 struct in6_addr in6buf;
4073 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
4074 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
4075 ret = -EINVAL;
4076 goto failure;
4077 }
4078 nla_put(nlm, IFLA_VTI_LOCAL, sizeof(in6buf), &in6buf);
4079 }
4080
4081 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
4082 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
4083 ret = -EINVAL;
4084 goto failure;
4085 }
4086 nla_put(nlm, IFLA_VTI_REMOTE, sizeof(in6buf), &in6buf);
4087 }
4088
4089 } else {
4090 struct in_addr inbuf;
4091
4092 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
4093 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
4094 ret = -EINVAL;
4095 goto failure;
4096 }
4097 nla_put(nlm, IFLA_VTI_LOCAL, sizeof(inbuf), &inbuf);
4098 }
4099
4100 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
4101 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
4102 ret = -EINVAL;
4103 goto failure;
4104 }
4105 nla_put(nlm, IFLA_VTI_REMOTE, sizeof(inbuf), &inbuf);
4106 }
4107
4108 }
4109
4110 if ((cur = tb[TUNNEL_ATTR_DATA])) {
4111 struct blob_attr *tb_data[__VTI_DATA_ATTR_MAX];
4112 uint32_t ikey = 0, okey = 0;
4113
4114 blobmsg_parse(vti_data_attr_list.params, __VTI_DATA_ATTR_MAX, tb_data,
4115 blobmsg_data(cur), blobmsg_len(cur));
4116
4117 if ((cur = tb_data[VTI_DATA_IKEY])) {
4118 if ((ikey = blobmsg_get_u32(cur)))
4119 nla_put_u32(nlm, IFLA_VTI_IKEY, htonl(ikey));
4120 }
4121
4122 if ((cur = tb_data[VTI_DATA_OKEY])) {
4123 if ((okey = blobmsg_get_u32(cur)))
4124 nla_put_u32(nlm, IFLA_VTI_OKEY, htonl(okey));
4125 }
4126 }
4127
4128 nla_nest_end(nlm, infodata);
4129 nla_nest_end(nlm, linkinfo);
4130
4131 return system_rtnl_call(nlm);
4132
4133 failure:
4134 nlmsg_free(nlm);
4135 return ret;
4136 }
4137 #endif
4138
4139 #ifdef IFLA_XFRM_MAX
4140 static int system_add_xfrm_tunnel(const char *name, const char *kind,
4141 const unsigned int link, struct blob_attr **tb)
4142 {
4143 struct nl_msg *nlm;
4144 struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
4145 struct blob_attr *cur;
4146 int ret = 0;
4147
4148 nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
4149 if (!nlm)
4150 return -1;
4151
4152 nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
4153 nla_put_string(nlm, IFLA_IFNAME, name);
4154
4155 struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
4156 if (!linkinfo) {
4157 ret = -ENOMEM;
4158 goto failure;
4159 }
4160
4161 nla_put_string(nlm, IFLA_INFO_KIND, kind);
4162 struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
4163 if (!infodata) {
4164 ret = -ENOMEM;
4165 goto failure;
4166 }
4167
4168 if (link)
4169 nla_put_u32(nlm, IFLA_XFRM_LINK, link);
4170
4171 if ((cur = tb[TUNNEL_ATTR_DATA])) {
4172 struct blob_attr *tb_data[__XFRM_DATA_ATTR_MAX];
4173 uint32_t if_id = 0;
4174
4175 blobmsg_parse(xfrm_data_attr_list.params, __XFRM_DATA_ATTR_MAX, tb_data,
4176 blobmsg_data(cur), blobmsg_len(cur));
4177
4178 if ((cur = tb_data[XFRM_DATA_IF_ID])) {
4179 if ((if_id = blobmsg_get_u32(cur)))
4180 nla_put_u32(nlm, IFLA_XFRM_IF_ID, if_id);
4181 }
4182
4183 }
4184
4185 nla_nest_end(nlm, infodata);
4186 nla_nest_end(nlm, linkinfo);
4187
4188 return system_rtnl_call(nlm);
4189
4190 failure:
4191 nlmsg_free(nlm);
4192 return ret;
4193 }
4194 #endif
4195
4196 #ifdef IFLA_VXLAN_MAX
4197 static void system_vxlan_map_bool_attr(struct nl_msg *msg, struct blob_attr **tb_data, int attrtype, int vxlandatatype, bool invert) {
4198 struct blob_attr *cur;
4199 if ((cur = tb_data[vxlandatatype])) {
4200 bool val = blobmsg_get_bool(cur);
4201 if (invert)
4202 val = !val;
4203
4204 if ((attrtype == IFLA_VXLAN_GBP) && val)
4205 nla_put_flag(msg, attrtype);
4206 else
4207 nla_put_u8(msg, attrtype, val);
4208
4209 }
4210 }
4211
4212 static int system_add_vxlan(const char *name, const unsigned int link, struct blob_attr **tb, bool v6)
4213 {
4214 struct blob_attr *tb_data[__VXLAN_DATA_ATTR_MAX];
4215 struct nl_msg *msg;
4216 struct nlattr *linkinfo, *data;
4217 struct ifinfomsg iim = { .ifi_family = AF_UNSPEC, };
4218 struct blob_attr *cur;
4219 int ret = 0;
4220
4221 if ((cur = tb[TUNNEL_ATTR_DATA]))
4222 blobmsg_parse(vxlan_data_attr_list.params, __VXLAN_DATA_ATTR_MAX, tb_data,
4223 blobmsg_data(cur), blobmsg_len(cur));
4224 else
4225 return -EINVAL;
4226
4227 msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
4228
4229 if (!msg)
4230 return -1;
4231
4232 nlmsg_append(msg, &iim, sizeof(iim), 0);
4233
4234 nla_put_string(msg, IFLA_IFNAME, name);
4235
4236 if ((cur = tb_data[VXLAN_DATA_ATTR_MACADDR])) {
4237 struct ether_addr *ea = ether_aton(blobmsg_get_string(cur));
4238 if (!ea) {
4239 ret = -EINVAL;
4240 goto failure;
4241 }
4242
4243 nla_put(msg, IFLA_ADDRESS, ETH_ALEN, ea);
4244 }
4245
4246 if ((cur = tb[TUNNEL_ATTR_MTU])) {
4247 uint32_t mtu = blobmsg_get_u32(cur);
4248 nla_put_u32(msg, IFLA_MTU, mtu);
4249 }
4250
4251 if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO))) {
4252 ret = -ENOMEM;
4253 goto failure;
4254 }
4255
4256 nla_put_string(msg, IFLA_INFO_KIND, "vxlan");
4257
4258 if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) {
4259 ret = -ENOMEM;
4260 goto failure;
4261 }
4262
4263 if (link)
4264 nla_put_u32(msg, IFLA_VXLAN_LINK, link);
4265
4266 if ((cur = tb_data[VXLAN_DATA_ATTR_ID])) {
4267 uint32_t id = blobmsg_get_u32(cur);
4268 if (id >= (1u << 24) - 1) {
4269 ret = -EINVAL;
4270 goto failure;
4271 }
4272
4273 nla_put_u32(msg, IFLA_VXLAN_ID, id);
4274 }
4275
4276 if (v6) {
4277 struct in6_addr in6buf;
4278 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
4279 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
4280 ret = -EINVAL;
4281 goto failure;
4282 }
4283 nla_put(msg, IFLA_VXLAN_LOCAL6, sizeof(in6buf), &in6buf);
4284 }
4285
4286 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
4287 if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
4288 ret = -EINVAL;
4289 goto failure;
4290 }
4291 nla_put(msg, IFLA_VXLAN_GROUP6, sizeof(in6buf), &in6buf);
4292 }
4293 } else {
4294 struct in_addr inbuf;
4295
4296 if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
4297 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
4298 ret = -EINVAL;
4299 goto failure;
4300 }
4301 nla_put(msg, IFLA_VXLAN_LOCAL, sizeof(inbuf), &inbuf);
4302 }
4303
4304 if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
4305 if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
4306 ret = -EINVAL;
4307 goto failure;
4308 }
4309 nla_put(msg, IFLA_VXLAN_GROUP, sizeof(inbuf), &inbuf);
4310 }
4311 }
4312
4313 uint32_t port = 4789;
4314 if ((cur = tb_data[VXLAN_DATA_ATTR_PORT])) {
4315 port = blobmsg_get_u32(cur);
4316 if (port < 1 || port > 65535) {
4317 ret = -EINVAL;
4318 goto failure;
4319 }
4320 }
4321 nla_put_u16(msg, IFLA_VXLAN_PORT, htons(port));
4322
4323 if ((cur = tb_data[VXLAN_DATA_ATTR_SRCPORTMIN])) {
4324 struct ifla_vxlan_port_range srcports = {0,0};
4325
4326 uint32_t low = blobmsg_get_u32(cur);
4327 if (low < 1 || low > 65535 - 1) {
4328 ret = -EINVAL;
4329 goto failure;
4330 }
4331
4332 srcports.low = htons((uint16_t) low);
4333 srcports.high = htons((uint16_t) (low+1));
4334
4335 if ((cur = tb_data[VXLAN_DATA_ATTR_SRCPORTMAX])) {
4336 uint32_t high = blobmsg_get_u32(cur);
4337 if (high < 1 || high > 65535) {
4338 ret = -EINVAL;
4339 goto failure;
4340 }
4341
4342 if (high > low)
4343 srcports.high = htons((uint16_t) high);
4344 }
4345
4346 nla_put(msg, IFLA_VXLAN_PORT_RANGE, sizeof(srcports), &srcports);
4347 }
4348
4349 system_vxlan_map_bool_attr(msg, tb_data, IFLA_VXLAN_UDP_CSUM, VXLAN_DATA_ATTR_TXCSUM, false);
4350 system_vxlan_map_bool_attr(msg, tb_data, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, VXLAN_DATA_ATTR_RXCSUM, true);
4351 system_vxlan_map_bool_attr(msg, tb_data, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, VXLAN_DATA_ATTR_TXCSUM, true);
4352 system_vxlan_map_bool_attr(msg, tb_data, IFLA_VXLAN_LEARNING, VXLAN_DATA_ATTR_LEARNING, false);
4353 system_vxlan_map_bool_attr(msg, tb_data, IFLA_VXLAN_RSC , VXLAN_DATA_ATTR_RSC, false);
4354 system_vxlan_map_bool_attr(msg, tb_data, IFLA_VXLAN_PROXY , VXLAN_DATA_ATTR_PROXY, false);
4355 system_vxlan_map_bool_attr(msg, tb_data, IFLA_VXLAN_L2MISS , VXLAN_DATA_ATTR_L2MISS, false);
4356 system_vxlan_map_bool_attr(msg, tb_data, IFLA_VXLAN_L3MISS , VXLAN_DATA_ATTR_L3MISS, false);
4357 system_vxlan_map_bool_attr(msg, tb_data, IFLA_VXLAN_GBP , VXLAN_DATA_ATTR_GBP, false);
4358
4359 if ((cur = tb_data[VXLAN_DATA_ATTR_AGEING])) {
4360 uint32_t ageing = blobmsg_get_u32(cur);
4361 nla_put_u32(msg, IFLA_VXLAN_AGEING, ageing);
4362 }
4363
4364 if ((cur = tb_data[VXLAN_DATA_ATTR_LIMIT])) {
4365 uint32_t maxaddress = blobmsg_get_u32(cur);
4366 nla_put_u32(msg, IFLA_VXLAN_LIMIT, maxaddress);
4367 }
4368
4369 if ((cur = tb[TUNNEL_ATTR_TOS])) {
4370 char *str = blobmsg_get_string(cur);
4371 unsigned tos = 1;
4372
4373 if (strcmp(str, "inherit")) {
4374 if (!system_tos_aton(str, &tos)) {
4375 ret = -EINVAL;
4376 goto failure;
4377 }
4378 }
4379
4380 nla_put_u8(msg, IFLA_VXLAN_TOS, tos);
4381 }
4382
4383 if ((cur = tb[TUNNEL_ATTR_TTL])) {
4384 uint32_t ttl = blobmsg_get_u32(cur);
4385 if (ttl < 1 || ttl > 255) {
4386 ret = -EINVAL;
4387 goto failure;
4388 }
4389
4390 nla_put_u8(msg, IFLA_VXLAN_TTL, ttl);
4391 }
4392
4393 nla_nest_end(msg, data);
4394 nla_nest_end(msg, linkinfo);
4395
4396 ret = system_rtnl_call(msg);
4397 if (ret)
4398 D(SYSTEM, "Error adding vxlan '%s': %d\n", name, ret);
4399
4400 return ret;
4401
4402 failure:
4403 nlmsg_free(msg);
4404 return ret;
4405 }
4406 #endif
4407
4408 static int system_add_sit_tunnel(const char *name, const unsigned int link, struct blob_attr **tb)
4409 {
4410 struct blob_attr *cur;
4411 int ret = 0;
4412
4413 if (system_add_proto_tunnel(name, IPPROTO_IPV6, link, tb) < 0)
4414 return -1;
4415
4416 #ifdef SIOCADD6RD
4417 if ((cur = tb[TUNNEL_ATTR_DATA])) {
4418 struct blob_attr *tb_data[__SIXRD_DATA_ATTR_MAX];
4419 unsigned int mask;
4420 struct ip_tunnel_6rd p6;
4421
4422 blobmsg_parse(sixrd_data_attr_list.params, __SIXRD_DATA_ATTR_MAX, tb_data,
4423 blobmsg_data(cur), blobmsg_len(cur));
4424
4425 memset(&p6, 0, sizeof(p6));
4426
4427 if ((cur = tb_data[SIXRD_DATA_PREFIX])) {
4428 if (!parse_ip_and_netmask(AF_INET6, blobmsg_data(cur),
4429 &p6.prefix, &mask) || mask > 128) {
4430 ret = -EINVAL;
4431 goto failure;
4432 }
4433
4434 p6.prefixlen = mask;
4435 }
4436
4437 if ((cur = tb_data[SIXRD_DATA_RELAY_PREFIX])) {
4438 if (!parse_ip_and_netmask(AF_INET, blobmsg_data(cur),
4439 &p6.relay_prefix, &mask) || mask > 32) {
4440 ret = -EINVAL;
4441 goto failure;
4442 }
4443
4444 p6.relay_prefixlen = mask;
4445 }
4446
4447 if (tunnel_ioctl(name, SIOCADD6RD, &p6) < 0) {
4448 ret = -1;
4449 goto failure;
4450 }
4451 }
4452 #endif
4453
4454 return ret;
4455
4456 failure:
4457 system_link_del(name);
4458 return ret;
4459 }
4460
4461 static int system_add_proto_tunnel(const char *name, const uint8_t proto, const unsigned int link, struct blob_attr **tb)
4462 {
4463 struct blob_attr *cur;
4464 bool set_df = true;
4465 struct ip_tunnel_parm p = {
4466 .link = link,
4467 .iph = {
4468 .version = 4,
4469 .ihl = 5,
4470 .protocol = proto,
4471 }
4472 };
4473
4474 if ((cur = tb[TUNNEL_ATTR_LOCAL]) &&
4475 inet_pton(AF_INET, blobmsg_data(cur), &p.iph.saddr) < 1)
4476 return -EINVAL;
4477
4478 if ((cur = tb[TUNNEL_ATTR_REMOTE]) &&
4479 inet_pton(AF_INET, blobmsg_data(cur), &p.iph.daddr) < 1)
4480 return -EINVAL;
4481
4482 if ((cur = tb[TUNNEL_ATTR_DF]))
4483 set_df = blobmsg_get_bool(cur);
4484
4485 if ((cur = tb[TUNNEL_ATTR_TTL]))
4486 p.iph.ttl = blobmsg_get_u32(cur);
4487
4488 if ((cur = tb[TUNNEL_ATTR_TOS])) {
4489 char *str = blobmsg_get_string(cur);
4490 if (strcmp(str, "inherit")) {
4491 unsigned uval;
4492
4493 if (!system_tos_aton(str, &uval))
4494 return -EINVAL;
4495
4496 p.iph.tos = uval;
4497 } else
4498 p.iph.tos = 1;
4499 }
4500
4501 p.iph.frag_off = set_df ? htons(IP_DF) : 0;
4502 /* ttl !=0 and nopmtudisc are incompatible */
4503 if (p.iph.ttl && p.iph.frag_off == 0)
4504 return -EINVAL;
4505
4506 strncpy(p.name, name, sizeof(p.name) - 1);
4507
4508 switch (p.iph.protocol) {
4509 case IPPROTO_IPIP:
4510 return tunnel_ioctl("tunl0", SIOCADDTUNNEL, &p);
4511 case IPPROTO_IPV6:
4512 return tunnel_ioctl("sit0", SIOCADDTUNNEL, &p);
4513 default:
4514 break;
4515 }
4516 return -1;
4517 }
4518
4519 int system_del_ip_tunnel(const struct device *dev)
4520 {
4521 return system_link_del(dev->ifname);
4522 }
4523
4524 int system_update_ipv6_mtu(struct device *dev, int mtu)
4525 {
4526 int ret = -1;
4527 char buf[64];
4528 int fd;
4529
4530 fd = open(dev_sysctl_path("ipv6/conf", dev->ifname, "mtu"), O_RDWR);
4531 if (fd < 0)
4532 return ret;
4533
4534 if (!mtu) {
4535 ssize_t len = read(fd, buf, sizeof(buf) - 1);
4536 if (len < 0)
4537 goto out;
4538
4539 buf[len] = 0;
4540 ret = atoi(buf);
4541 } else {
4542 if (write(fd, buf, snprintf(buf, sizeof(buf), "%i", mtu)) > 0)
4543 ret = mtu;
4544 }
4545
4546 out:
4547 close(fd);
4548 return ret;
4549 }
4550
4551 int system_add_ip_tunnel(const struct device *dev, struct blob_attr *attr)
4552 {
4553 struct blob_attr *tb[__TUNNEL_ATTR_MAX];
4554 struct blob_attr *cur;
4555 const char *str;
4556
4557 blobmsg_parse(tunnel_attr_list.params, __TUNNEL_ATTR_MAX, tb,
4558 blob_data(attr), blob_len(attr));
4559
4560 system_link_del(dev->ifname);
4561
4562 if (!(cur = tb[TUNNEL_ATTR_TYPE]))
4563 return -EINVAL;
4564 str = blobmsg_data(cur);
4565
4566 unsigned int ttl = 0;
4567 if ((cur = tb[TUNNEL_ATTR_TTL])) {
4568 ttl = blobmsg_get_u32(cur);
4569 if (ttl > 255)
4570 return -EINVAL;
4571 }
4572
4573 unsigned int link = 0;
4574 if ((cur = tb[TUNNEL_ATTR_LINK])) {
4575 struct interface *iface = vlist_find(&interfaces, blobmsg_data(cur), iface, node);
4576 if (!iface)
4577 return -EINVAL;
4578
4579 if (iface->l3_dev.dev)
4580 link = iface->l3_dev.dev->ifindex;
4581 }
4582
4583 if (!strcmp(str, "sit"))
4584 return system_add_sit_tunnel(dev->ifname, link, tb);
4585 #ifdef IFLA_IPTUN_MAX
4586 else if (!strcmp(str, "ipip6")) {
4587 return system_add_ip6_tunnel(dev->ifname, link, tb);
4588 } else if (!strcmp(str, "greip")) {
4589 return system_add_gre_tunnel(dev->ifname, "gre", link, tb, false);
4590 } else if (!strcmp(str, "gretapip")) {
4591 return system_add_gre_tunnel(dev->ifname, "gretap", link, tb, false);
4592 } else if (!strcmp(str, "greip6")) {
4593 return system_add_gre_tunnel(dev->ifname, "ip6gre", link, tb, true);
4594 } else if (!strcmp(str, "gretapip6")) {
4595 return system_add_gre_tunnel(dev->ifname, "ip6gretap", link, tb, true);
4596 #ifdef IFLA_VTI_MAX
4597 } else if (!strcmp(str, "vtiip")) {
4598 return system_add_vti_tunnel(dev->ifname, "vti", link, tb, false);
4599 } else if (!strcmp(str, "vtiip6")) {
4600 return system_add_vti_tunnel(dev->ifname, "vti6", link, tb, true);
4601 #endif
4602 #ifdef IFLA_XFRM_MAX
4603 } else if (!strcmp(str, "xfrm")) {
4604 return system_add_xfrm_tunnel(dev->ifname, "xfrm", link, tb);
4605 #endif
4606 #ifdef IFLA_VXLAN_MAX
4607 } else if(!strcmp(str, "vxlan")) {
4608 return system_add_vxlan(dev->ifname, link, tb, false);
4609 } else if(!strcmp(str, "vxlan6")) {
4610 return system_add_vxlan(dev->ifname, link, tb, true);
4611 #endif
4612 #endif
4613 } else if (!strcmp(str, "ipip")) {
4614 return system_add_proto_tunnel(dev->ifname, IPPROTO_IPIP, link, tb);
4615 }
4616 else
4617 return -EINVAL;
4618
4619 return 0;
4620 }
OpenWrt Network interface configuration daemon