21 #include <netlink-private/netlink.h>
22 #include <netlink/netlink.h>
23 #include <netlink/attr.h>
24 #include <netlink/utils.h>
25 #include <netlink/object.h>
26 #include <netlink/hashtable.h>
27 #include <netlink/data.h>
28 #include <netlink/route/rtnl.h>
29 #include <netlink/route/link.h>
30 #include <netlink-private/route/link/api.h>
33 #define LINK_ATTR_MTU (1 << 0)
34 #define LINK_ATTR_LINK (1 << 1)
35 #define LINK_ATTR_TXQLEN (1 << 2)
36 #define LINK_ATTR_WEIGHT (1 << 3)
37 #define LINK_ATTR_MASTER (1 << 4)
38 #define LINK_ATTR_QDISC (1 << 5)
39 #define LINK_ATTR_MAP (1 << 6)
40 #define LINK_ATTR_ADDR (1 << 7)
41 #define LINK_ATTR_BRD (1 << 8)
42 #define LINK_ATTR_FLAGS (1 << 9)
43 #define LINK_ATTR_IFNAME (1 << 10)
44 #define LINK_ATTR_IFINDEX (1 << 11)
45 #define LINK_ATTR_FAMILY (1 << 12)
46 #define LINK_ATTR_ARPTYPE (1 << 13)
47 #define LINK_ATTR_STATS (1 << 14)
48 #define LINK_ATTR_CHANGE (1 << 15)
49 #define LINK_ATTR_OPERSTATE (1 << 16)
50 #define LINK_ATTR_LINKMODE (1 << 17)
51 #define LINK_ATTR_LINKINFO (1 << 18)
52 #define LINK_ATTR_IFALIAS (1 << 19)
53 #define LINK_ATTR_NUM_VF (1 << 20)
54 #define LINK_ATTR_PROMISCUITY (1 << 21)
55 #define LINK_ATTR_NUM_TX_QUEUES (1 << 22)
56 #define LINK_ATTR_NUM_RX_QUEUES (1 << 23)
57 #define LINK_ATTR_GROUP (1 << 24)
58 #define LINK_ATTR_CARRIER (1 << 25)
59 #define LINK_ATTR_PROTINFO (1 << 26)
60 #define LINK_ATTR_AF_SPEC (1 << 27)
61 #define LINK_ATTR_PHYS_PORT_ID (1 << 28)
62 #define LINK_ATTR_NS_FD (1 << 29)
63 #define LINK_ATTR_NS_PID (1 << 30)
65 static struct nl_cache_ops rtnl_link_ops;
66 static struct nl_object_ops link_obj_ops;
69 static struct rtnl_link_af_ops *af_lookup_and_alloc(
struct rtnl_link *link,
72 struct rtnl_link_af_ops *af_ops;
87 static int af_free(
struct rtnl_link *link,
struct rtnl_link_af_ops *ops,
88 void *data,
void *arg)
91 ops->ao_free(link, data);
98 static int af_clone(
struct rtnl_link *link,
struct rtnl_link_af_ops *ops,
99 void *data,
void *arg)
104 !(dst->l_af_data[ops->ao_family] = ops->ao_clone(dst, data)))
110 static int af_fill(
struct rtnl_link *link,
struct rtnl_link_af_ops *ops,
111 void *data,
void *arg)
113 struct nl_msg *msg = arg;
114 struct nlattr *af_attr;
117 if (!ops->ao_fill_af)
123 if ((err = ops->ao_fill_af(link, arg, data)) < 0)
131 static int af_dump_line(
struct rtnl_link *link,
struct rtnl_link_af_ops *ops,
132 void *data,
void *arg)
142 static int af_dump_details(
struct rtnl_link *link,
struct rtnl_link_af_ops *ops,
143 void *data,
void *arg)
153 static int af_dump_stats(
struct rtnl_link *link,
struct rtnl_link_af_ops *ops,
154 void *data,
void *arg)
164 static int do_foreach_af(
struct rtnl_link *link,
166 struct rtnl_link_af_ops *,
void *,
void *),
171 for (i = 0; i < AF_MAX; i++) {
172 if (link->l_af_data[i]) {
173 struct rtnl_link_af_ops *ops;
178 err = cb(link, ops, link->l_af_data[i], arg);
190 static void release_link_info(
struct rtnl_link *link)
192 struct rtnl_link_info_ops *io = link->l_info_ops;
198 link->l_info_ops = NULL;
202 static void link_free_data(
struct nl_object *c)
204 struct rtnl_link *link = nl_object_priv(c);
207 struct rtnl_link_info_ops *io;
209 if ((io = link->l_info_ops) != NULL)
210 release_link_info(link);
218 free(link->l_ifalias);
219 free(link->l_info_kind);
221 do_foreach_af(link, af_free, NULL);
227 static int link_clone(
struct nl_object *_dst,
struct nl_object *_src)
229 struct rtnl_link *dst = nl_object_priv(_dst);
230 struct rtnl_link *src = nl_object_priv(_src);
242 if (!(dst->l_ifalias = strdup(src->l_ifalias)))
245 if (src->l_info_kind)
246 if (!(dst->l_info_kind = strdup(src->l_info_kind)))
249 if (src->l_info_ops && src->l_info_ops->io_clone) {
250 err = src->l_info_ops->io_clone(dst, src);
255 if ((err = do_foreach_af(src, af_clone, dst)) < 0)
258 if (src->l_phys_port_id)
259 if (!(dst->l_phys_port_id =
nl_data_clone(src->l_phys_port_id)))
265 struct nla_policy rtln_link_policy[IFLA_MAX+1] = {
267 .maxlen = IFNAMSIZ },
268 [IFLA_MTU] = { .type =
NLA_U32 },
269 [IFLA_TXQLEN] = { .type =
NLA_U32 },
270 [IFLA_LINK] = { .type =
NLA_U32 },
271 [IFLA_WEIGHT] = { .type =
NLA_U32 },
272 [IFLA_MASTER] = { .type =
NLA_U32 },
273 [IFLA_OPERSTATE] = { .type =
NLA_U8 },
274 [IFLA_LINKMODE] = { .type =
NLA_U8 },
277 .maxlen = IFQDISCSIZ },
278 [IFLA_STATS] = { .minlen =
sizeof(
struct rtnl_link_stats) },
279 [IFLA_STATS64] = { .minlen =
sizeof(
struct rtnl_link_stats64)},
280 [IFLA_MAP] = { .minlen =
sizeof(
struct rtnl_link_ifmap) },
281 [IFLA_IFALIAS] = { .type =
NLA_STRING, .maxlen = IFALIASZ },
282 [IFLA_NUM_VF] = { .type =
NLA_U32 },
284 [IFLA_PROMISCUITY] = { .type =
NLA_U32 },
285 [IFLA_NUM_TX_QUEUES] = { .type =
NLA_U32 },
286 [IFLA_NUM_RX_QUEUES] = { .type =
NLA_U32 },
287 [IFLA_GROUP] = { .type =
NLA_U32 },
288 [IFLA_CARRIER] = { .type =
NLA_U8 },
290 [IFLA_NET_NS_PID] = { .type =
NLA_U32 },
291 [IFLA_NET_NS_FD] = { .type =
NLA_U32 },
294 static struct nla_policy link_info_policy[IFLA_INFO_MAX+1] = {
300 int rtnl_link_info_parse(
struct rtnl_link *link,
struct nlattr **tb)
302 if (tb[IFLA_IFNAME] == NULL)
303 return -NLE_MISSING_ATTR;
305 nla_strlcpy(link->l_name, tb[IFLA_IFNAME], IFNAMSIZ);
308 if (tb[IFLA_STATS]) {
309 struct rtnl_link_stats *st =
nla_data(tb[IFLA_STATS]);
338 link->ce_mask |= LINK_ATTR_STATS;
341 if (tb[IFLA_STATS64]) {
349 struct rtnl_link_stats64 st;
352 sizeof(
struct rtnl_link_stats64));
381 link->ce_mask |= LINK_ATTR_STATS;
384 if (tb[IFLA_TXQLEN]) {
386 link->ce_mask |= LINK_ATTR_TXQLEN;
391 link->ce_mask |= LINK_ATTR_MTU;
394 if (tb[IFLA_ADDRESS]) {
396 if (link->l_addr == NULL)
400 link->ce_mask |= LINK_ATTR_ADDR;
403 if (tb[IFLA_BROADCAST]) {
406 if (link->l_bcast == NULL)
410 link->ce_mask |= LINK_ATTR_BRD;
415 link->ce_mask |= LINK_ATTR_LINK;
418 if (tb[IFLA_WEIGHT]) {
420 link->ce_mask |= LINK_ATTR_WEIGHT;
423 if (tb[IFLA_QDISC]) {
424 nla_strlcpy(link->l_qdisc, tb[IFLA_QDISC], IFQDISCSIZ);
425 link->ce_mask |= LINK_ATTR_QDISC;
430 sizeof(
struct rtnl_link_ifmap));
431 link->ce_mask |= LINK_ATTR_MAP;
434 if (tb[IFLA_MASTER]) {
436 link->ce_mask |= LINK_ATTR_MASTER;
439 if (tb[IFLA_CARRIER]) {
440 link->l_carrier =
nla_get_u8(tb[IFLA_CARRIER]);
441 link->ce_mask |= LINK_ATTR_CARRIER;
444 if (tb[IFLA_OPERSTATE]) {
445 link->l_operstate =
nla_get_u8(tb[IFLA_OPERSTATE]);
446 link->ce_mask |= LINK_ATTR_OPERSTATE;
449 if (tb[IFLA_LINKMODE]) {
450 link->l_linkmode =
nla_get_u8(tb[IFLA_LINKMODE]);
451 link->ce_mask |= LINK_ATTR_LINKMODE;
454 if (tb[IFLA_IFALIAS]) {
455 link->l_ifalias = nla_strdup(tb[IFLA_IFALIAS]);
456 if (link->l_ifalias == NULL)
458 link->ce_mask |= LINK_ATTR_IFALIAS;
461 if (tb[IFLA_NET_NS_FD]) {
463 link->ce_mask |= LINK_ATTR_NS_FD;
466 if (tb[IFLA_NET_NS_PID]) {
468 link->ce_mask |= LINK_ATTR_NS_PID;
474 static int link_msg_parser(
struct nl_cache_ops *ops,
struct sockaddr_nl *who,
475 struct nlmsghdr *n,
struct nl_parser_param *pp)
478 struct ifinfomsg *ifi;
479 struct nlattr *tb[IFLA_MAX+1];
480 struct rtnl_link_af_ops *af_ops = NULL;
482 struct nla_policy real_link_policy[IFLA_MAX+1];
484 memcpy(&real_link_policy, rtln_link_policy,
sizeof(rtln_link_policy));
492 link->ce_msgtype = n->nlmsg_type;
494 if (!nlmsg_valid_hdr(n,
sizeof(*ifi)))
495 return -NLE_MSG_TOOSHORT;
498 link->l_family = family = ifi->ifi_family;
499 link->l_arptype = ifi->ifi_type;
500 link->l_index = ifi->ifi_index;
501 link->l_flags = ifi->ifi_flags;
502 link->l_change = ifi->ifi_change;
503 link->ce_mask = (LINK_ATTR_IFNAME | LINK_ATTR_FAMILY |
504 LINK_ATTR_ARPTYPE| LINK_ATTR_IFINDEX |
505 LINK_ATTR_FLAGS | LINK_ATTR_CHANGE);
507 if ((af_ops = af_lookup_and_alloc(link, family))) {
508 if (af_ops->ao_protinfo_policy) {
509 memcpy(&real_link_policy[IFLA_PROTINFO],
510 af_ops->ao_protinfo_policy,
514 link->l_af_ops = af_ops;
517 err =
nlmsg_parse(n,
sizeof(*ifi), tb, IFLA_MAX, real_link_policy);
521 err = rtnl_link_info_parse(link, tb);
525 if (tb[IFLA_NUM_VF]) {
527 link->ce_mask |= LINK_ATTR_NUM_VF;
530 if (tb[IFLA_LINKINFO]) {
531 struct nlattr *li[IFLA_INFO_MAX+1];
538 if (li[IFLA_INFO_KIND]) {
539 struct rtnl_link_info_ops *ops;
543 kind = nla_strdup(li[IFLA_INFO_KIND]);
548 link->l_info_kind = kind;
549 link->ce_mask |= LINK_ATTR_LINKINFO;
551 if ((af = nl_str2af(kind)) >= 0 &&
552 !af_ops && (af_ops = af_lookup_and_alloc(link, af))) {
554 if (af_ops->ao_protinfo_policy) {
555 tb[IFLA_PROTINFO] = (
struct nlattr *)af_ops->ao_protinfo_policy;
557 link->l_family = family = af;
558 link->l_af_ops = af_ops;
562 link->l_info_ops = ops;
566 (li[IFLA_INFO_DATA] || li[IFLA_INFO_XSTATS])) {
567 err = ops->io_parse(link, li[IFLA_INFO_DATA],
568 li[IFLA_INFO_XSTATS]);
576 link->ce_mask |= LINK_ATTR_LINKINFO;
579 if (tb[IFLA_PROTINFO] && af_ops && af_ops->ao_parse_protinfo) {
580 err = af_ops->ao_parse_protinfo(link, tb[IFLA_PROTINFO],
581 link->l_af_data[link->l_family]);
584 link->ce_mask |= LINK_ATTR_PROTINFO;
587 if (tb[IFLA_AF_SPEC]) {
588 struct nlattr *af_attr;
592 af_ops = af_lookup_and_alloc(link,
nla_type(af_attr));
593 if (af_ops && af_ops->ao_parse_af) {
594 char *af_data = link->l_af_data[
nla_type(af_attr)];
596 err = af_ops->ao_parse_af(link, af_attr, af_data);
602 link->ce_mask |= LINK_ATTR_AF_SPEC;
605 if (tb[IFLA_PROMISCUITY]) {
606 link->l_promiscuity =
nla_get_u32(tb[IFLA_PROMISCUITY]);
607 link->ce_mask |= LINK_ATTR_PROMISCUITY;
610 if (tb[IFLA_NUM_TX_QUEUES]) {
611 link->l_num_tx_queues =
nla_get_u32(tb[IFLA_NUM_TX_QUEUES]);
612 link->ce_mask |= LINK_ATTR_NUM_TX_QUEUES;
615 if (tb[IFLA_NUM_RX_QUEUES]) {
616 link->l_num_rx_queues =
nla_get_u32(tb[IFLA_NUM_RX_QUEUES]);
617 link->ce_mask |= LINK_ATTR_NUM_RX_QUEUES;
620 if (tb[IFLA_GROUP]) {
622 link->ce_mask |= LINK_ATTR_GROUP;
625 if (tb[IFLA_PHYS_PORT_ID]) {
627 if (link->l_phys_port_id == NULL) {
631 link->ce_mask |= LINK_ATTR_PHYS_PORT_ID;
634 err = pp->pp_cb((
struct nl_object *) link, pp);
641 static int link_request_update(
struct nl_cache *cache,
struct nl_sock *sk)
643 int family = cache->c_iarg1;
648 static void link_dump_line(
struct nl_object *obj,
struct nl_dump_params *p)
651 struct nl_cache *cache = obj->ce_cache;
653 int fetched_cache = 0;
660 nl_dump_line(p,
"%s %s ", link->l_name,
661 nl_llproto2str(link->l_arptype, buf,
sizeof(buf)));
666 if (link->ce_mask & LINK_ATTR_MASTER) {
669 nl_dump(p,
"master %s ", master ? master->l_name :
"inv");
673 nl_dump(p,
"master %d ", link->l_master);
676 rtnl_link_flags2str(link->l_flags, buf,
sizeof(buf));
680 if (link->ce_mask & LINK_ATTR_LINK) {
683 nl_dump(p,
"slave-of %s ", ll ? ll->l_name :
"NONE");
687 nl_dump(p,
"slave-of %d ", link->l_link);
690 if (link->ce_mask & LINK_ATTR_GROUP)
691 nl_dump(p,
"group %u ", link->l_group);
693 if (link->l_info_ops && link->l_info_ops->io_dump[
NL_DUMP_LINE])
696 do_foreach_af(link, af_dump_line, p);
704 static void link_dump_details(
struct nl_object *obj,
struct nl_dump_params *p)
709 link_dump_line(obj, p);
711 nl_dump_line(p,
" mtu %u ", link->l_mtu);
712 nl_dump(p,
"txqlen %u weight %u ", link->l_txqlen, link->l_weight);
714 if (link->ce_mask & LINK_ATTR_QDISC)
715 nl_dump(p,
"qdisc %s ", link->l_qdisc);
717 if (link->ce_mask & LINK_ATTR_MAP && link->l_map.lm_irq)
718 nl_dump(p,
"irq %u ", link->l_map.lm_irq);
720 if (link->ce_mask & LINK_ATTR_IFINDEX)
721 nl_dump(p,
"index %u ", link->l_index);
723 if (link->ce_mask & LINK_ATTR_PROMISCUITY && link->l_promiscuity > 0)
724 nl_dump(p,
"promisc-mode (%u users) ", link->l_promiscuity);
728 if (link->ce_mask & LINK_ATTR_IFALIAS)
729 nl_dump_line(p,
" alias %s\n", link->l_ifalias);
731 nl_dump_line(p,
" ");
733 if (link->ce_mask & LINK_ATTR_NUM_TX_QUEUES)
734 nl_dump(p,
"txq %u ", link->l_num_tx_queues);
736 if (link->ce_mask & LINK_ATTR_NUM_RX_QUEUES)
737 nl_dump(p,
"rxq %u ", link->l_num_rx_queues);
739 if (link->ce_mask & LINK_ATTR_BRD)
743 if ((link->ce_mask & LINK_ATTR_OPERSTATE) &&
744 link->l_operstate != IF_OPER_UNKNOWN) {
745 rtnl_link_operstate2str(link->l_operstate, buf,
sizeof(buf));
749 if (link->ce_mask & LINK_ATTR_NUM_VF)
750 nl_dump(p,
"num-vf %u ", link->l_num_vf);
753 rtnl_link_mode2str(link->l_linkmode, buf,
sizeof(buf)));
756 rtnl_link_carrier2str(link->l_carrier, buf,
sizeof(buf)));
763 do_foreach_af(link, af_dump_details, p);
766 static void link_dump_stats(
struct nl_object *obj,
struct nl_dump_params *p)
772 link_dump_details(obj, p);
774 nl_dump_line(p,
" Stats: bytes packets errors "
775 " dropped fifo-err compressed\n");
779 strcpy(fmt,
" RX %X.2f %s %10" PRIu64
" %10" PRIu64
" %10" PRIu64
" %10" PRIu64
" %10" PRIu64
"\n");
780 fmt[9] = *unit ==
'B' ?
'9' :
'7';
782 nl_dump_line(p, fmt, res, unit,
791 strcpy(fmt,
" TX %X.2f %s %10" PRIu64
" %10" PRIu64
" %10" PRIu64
" %10" PRIu64
" %10" PRIu64
"\n");
792 fmt[9] = *unit ==
'B' ?
'9' :
'7';
794 nl_dump_line(p, fmt, res, unit,
801 nl_dump_line(p,
" Errors: length over crc "
802 " frame missed multicast\n");
804 nl_dump_line(p,
" RX %10" PRIu64
" %10" PRIu64
" %10"
805 PRIu64
" %10" PRIu64
" %10" PRIu64
" %10"
814 nl_dump_line(p,
" aborted carrier heartbeat "
815 " window collision\n");
817 nl_dump_line(p,
" TX %10" PRIu64
" %10" PRIu64
" %10"
818 PRIu64
" %10" PRIu64
" %10" PRIu64
"\n",
825 if (link->l_info_ops && link->l_info_ops->io_dump[
NL_DUMP_STATS])
828 do_foreach_af(link, af_dump_stats, p);
832 static int link_handle_event(
struct nl_object *a,
struct rtnl_link_event_cb *cb)
835 struct nl_cache *c = dp_cache(a);
838 if (l->l_change == ~0U) {
839 if (l->ce_msgtype == RTM_NEWLINK)
842 cb->le_unregister(l);
847 if (l->l_change & IFF_SLAVE) {
848 if (l->l_flags & IFF_SLAVE) {
850 cb->le_new_bonding(l, m);
854 cb->le_cancel_bonding(l);
858 if (l->l_change & IFF_UP && l->l_change & IFF_RUNNING)
859 dp_dump_line(p, line++,
"link %s changed state to %s.\n",
860 l->l_name, l->l_flags & IFF_UP ?
"up" :
"down");
862 if (l->l_change & IFF_PROMISC) {
863 dp_new_line(p, line++);
864 dp_dump(p,
"link %s %s promiscuous mode.\n",
865 l->l_name, l->l_flags & IFF_PROMISC ?
"entered" :
"left");
869 dp_dump_line(p, line++,
"link %s sent unknown event.\n",
878 static void link_keygen(
struct nl_object *obj, uint32_t *hashkey,
882 unsigned int lkey_sz;
883 struct link_hash_key {
886 } __attribute__((packed)) lkey;
888 lkey_sz = sizeof(lkey);
889 lkey.l_index = link->l_index;
890 lkey.l_family = link->l_family;
892 *hashkey = nl_hash(&lkey, lkey_sz, 0) % table_sz;
894 NL_DBG(5, "link %p key (dev %d fam %d) keysz %d, hash 0x%x\n",
895 link, lkey.l_index, lkey.l_family, lkey_sz, *hashkey);
900 static
int link_compare(struct nl_object *_a, struct nl_object *_b,
901 uint32_t attrs,
int flags)
907 #define LINK_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, LINK_ATTR_##ATTR, a, b, EXPR)
909 diff |= LINK_DIFF(IFINDEX, a->l_index != b->l_index);
910 diff |= LINK_DIFF(MTU, a->l_mtu != b->l_mtu);
911 diff |= LINK_DIFF(LINK, a->l_link != b->l_link);
912 diff |= LINK_DIFF(TXQLEN, a->l_txqlen != b->l_txqlen);
913 diff |= LINK_DIFF(WEIGHT, a->l_weight != b->l_weight);
914 diff |= LINK_DIFF(MASTER, a->l_master != b->l_master);
915 diff |= LINK_DIFF(FAMILY, a->l_family != b->l_family);
916 diff |= LINK_DIFF(OPERSTATE, a->l_operstate != b->l_operstate);
917 diff |= LINK_DIFF(LINKMODE, a->l_linkmode != b->l_linkmode);
918 diff |= LINK_DIFF(QDISC, strcmp(a->l_qdisc, b->l_qdisc));
919 diff |= LINK_DIFF(IFNAME, strcmp(a->l_name, b->l_name));
920 diff |= LINK_DIFF(ADDR,
nl_addr_cmp(a->l_addr, b->l_addr));
921 diff |= LINK_DIFF(BRD,
nl_addr_cmp(a->l_bcast, b->l_bcast));
922 diff |= LINK_DIFF(IFALIAS, strcmp(a->l_ifalias, b->l_ifalias));
923 diff |= LINK_DIFF(NUM_VF, a->l_num_vf != b->l_num_vf);
924 diff |= LINK_DIFF(PROMISCUITY, a->l_promiscuity != b->l_promiscuity);
925 diff |= LINK_DIFF(NUM_TX_QUEUES,a->l_num_tx_queues != b->l_num_tx_queues);
926 diff |= LINK_DIFF(NUM_RX_QUEUES,a->l_num_rx_queues != b->l_num_rx_queues);
927 diff |= LINK_DIFF(GROUP, a->l_group != b->l_group);
929 if (flags & LOOSE_COMPARISON)
930 diff |= LINK_DIFF(FLAGS,
931 (a->l_flags ^ b->l_flags) & b->l_flag_mask);
933 diff |= LINK_DIFF(FLAGS, a->l_flags != b->l_flags);
938 if (a->l_family == b->l_family) {
940 goto protinfo_mismatch;
947 diff |= LINK_DIFF(PROTINFO, 1);
953 static const struct trans_tbl link_attrs[] = {
954 __ADD(LINK_ATTR_MTU, mtu)
955 __ADD(LINK_ATTR_LINK, link)
956 __ADD(LINK_ATTR_TXQLEN, txqlen)
957 __ADD(LINK_ATTR_WEIGHT, weight)
958 __ADD(LINK_ATTR_MASTER, master)
959 __ADD(LINK_ATTR_QDISC, qdisc)
960 __ADD(LINK_ATTR_MAP, map)
961 __ADD(LINK_ATTR_ADDR, address)
962 __ADD(LINK_ATTR_BRD, broadcast)
963 __ADD(LINK_ATTR_FLAGS, flags)
964 __ADD(LINK_ATTR_IFNAME, name)
965 __ADD(LINK_ATTR_IFINDEX, ifindex)
966 __ADD(LINK_ATTR_FAMILY, family)
967 __ADD(LINK_ATTR_ARPTYPE, arptype)
968 __ADD(LINK_ATTR_STATS, stats)
969 __ADD(LINK_ATTR_CHANGE, change)
970 __ADD(LINK_ATTR_OPERSTATE, operstate)
971 __ADD(LINK_ATTR_LINKMODE, linkmode)
972 __ADD(LINK_ATTR_IFALIAS, ifalias)
973 __ADD(LINK_ATTR_NUM_VF, num_vf)
974 __ADD(LINK_ATTR_PROMISCUITY, promiscuity)
975 __ADD(LINK_ATTR_NUM_TX_QUEUES, num_tx_queues)
976 __ADD(LINK_ATTR_NUM_RX_QUEUES, num_rx_queues)
977 __ADD(LINK_ATTR_GROUP, group)
978 __ADD(LINK_ATTR_CARRIER, carrier)
979 __ADD(LINK_ATTR_PHYS_PORT_ID, phys_port_id)
982 static
char *link_attrs2str(
int attrs,
char *buf,
size_t len)
984 return __flags2str(attrs, buf, len, link_attrs,
985 ARRAY_SIZE(link_attrs));
1019 struct nl_cache * cache;
1026 cache->c_iarg1 = family;
1056 if (cache->c_ops != &rtnl_link_ops)
1059 nl_list_for_each_entry(link, &cache->c_items, ce_list) {
1060 if (link->l_index == ifindex) {
1089 if (cache->c_ops != &rtnl_link_ops)
1092 nl_list_for_each_entry(link, &cache->c_items, ce_list) {
1093 if (!strcmp(name, link->l_name)) {
1117 struct nl_msg **result)
1119 struct ifinfomsg ifi;
1122 if (ifindex <= 0 && !name) {
1123 APPBUG(
"ifindex or name must be specified");
1124 return -NLE_MISSING_ATTR;
1127 memset(&ifi, 0,
sizeof(ifi));
1133 ifi.ifi_index = ifindex;
1135 if (
nlmsg_append(msg, &ifi,
sizeof(ifi), NLMSG_ALIGNTO) < 0)
1136 goto nla_put_failure;
1146 return -NLE_MSGSIZE;
1168 struct nl_msg *msg = NULL;
1169 struct nl_object *obj;
1180 if ((err =
nl_pickup(sk, link_msg_parser, &obj)) < 0)
1187 if (err == 0 && obj)
1213 strncpy(dst, link->l_name, len - 1);
1237 ifindex = link->l_index;
1246 int rtnl_link_fill_info(
struct nl_msg *msg,
struct rtnl_link *link)
1248 if (link->ce_mask & LINK_ATTR_ADDR)
1251 if (link->ce_mask & LINK_ATTR_BRD)
1254 if (link->ce_mask & LINK_ATTR_MTU)
1257 if (link->ce_mask & LINK_ATTR_TXQLEN)
1260 if (link->ce_mask & LINK_ATTR_WEIGHT)
1263 if (link->ce_mask & LINK_ATTR_IFNAME)
1266 if (link->ce_mask & LINK_ATTR_OPERSTATE)
1267 NLA_PUT_U8(msg, IFLA_OPERSTATE, link->l_operstate);
1269 if (link->ce_mask & LINK_ATTR_CARRIER)
1270 NLA_PUT_U8(msg, IFLA_CARRIER, link->l_carrier);
1272 if (link->ce_mask & LINK_ATTR_LINKMODE)
1273 NLA_PUT_U8(msg, IFLA_LINKMODE, link->l_linkmode);
1275 if (link->ce_mask & LINK_ATTR_IFALIAS)
1278 if (link->ce_mask & LINK_ATTR_LINK)
1281 if (link->ce_mask & LINK_ATTR_MASTER)
1284 if (link->ce_mask & LINK_ATTR_NUM_TX_QUEUES)
1285 NLA_PUT_U32(msg, IFLA_NUM_TX_QUEUES, link->l_num_tx_queues);
1287 if (link->ce_mask & LINK_ATTR_NUM_RX_QUEUES)
1288 NLA_PUT_U32(msg, IFLA_NUM_RX_QUEUES, link->l_num_rx_queues);
1290 if (link->ce_mask & LINK_ATTR_NS_FD)
1293 if (link->ce_mask & LINK_ATTR_NS_PID)
1294 NLA_PUT_U32(msg, IFLA_NET_NS_PID, link->l_ns_pid);
1299 return -NLE_MSGSIZE;
1302 static int build_link_msg(
int cmd,
struct ifinfomsg *hdr,
1303 struct rtnl_link *link,
int flags,
struct nl_msg **result)
1306 struct nlattr *af_spec;
1312 if (
nlmsg_append(msg, hdr,
sizeof(*hdr), NLMSG_ALIGNTO) < 0)
1313 goto nla_put_failure;
1315 if (rtnl_link_fill_info(msg, link))
1316 goto nla_put_failure;
1318 if (link->ce_mask & LINK_ATTR_GROUP)
1321 if (link->ce_mask & LINK_ATTR_LINKINFO) {
1322 struct nlattr *info;
1325 goto nla_put_failure;
1329 if (link->l_info_ops) {
1330 if (link->l_info_ops->io_put_attrs &&
1331 link->l_info_ops->io_put_attrs(msg, link) < 0)
1332 goto nla_put_failure;
1339 goto nla_put_failure;
1341 if (do_foreach_af(link, af_fill, msg) < 0)
1342 goto nla_put_failure;
1351 return -NLE_MSGSIZE;
1376 struct nl_msg **result)
1378 struct ifinfomsg ifi = {
1379 .ifi_family = link->l_family,
1380 .ifi_index = link->l_index,
1381 .ifi_flags = link->l_flags,
1384 return build_link_msg(RTM_NEWLINK, &ifi, link, flags, result);
1438 struct nl_msg **result)
1440 struct ifinfomsg ifi = {
1441 .ifi_family = orig->l_family,
1442 .ifi_index = orig->l_index,
1446 if (changes->ce_mask & LINK_ATTR_FLAGS) {
1447 ifi.ifi_flags = orig->l_flags & ~changes->l_flag_mask;
1448 ifi.ifi_flags |= changes->l_flags;
1451 if (changes->l_family && changes->l_family != orig->l_family) {
1452 APPBUG(
"link change: family is immutable");
1453 return -NLE_IMMUTABLE;
1457 if (orig->ce_mask & LINK_ATTR_IFINDEX &&
1458 orig->ce_mask & LINK_ATTR_IFNAME &&
1459 changes->ce_mask & LINK_ATTR_IFNAME &&
1460 !strcmp(orig->l_name, changes->l_name))
1461 changes->ce_mask &= ~LINK_ATTR_IFNAME;
1463 if ((err = build_link_msg(RTM_NEWLINK, &ifi, changes, flags, result)) < 0)
1518 err = wait_for_ack(sk);
1519 if (err == -NLE_OPNOTSUPP && msg->nm_nlh->nlmsg_type == RTM_NEWLINK) {
1520 msg->nm_nlh->nlmsg_type = RTM_SETLINK;
1550 struct nl_msg **result)
1553 struct ifinfomsg ifi = {
1554 .ifi_index = link->l_index,
1557 if (!(link->ce_mask & (LINK_ATTR_IFINDEX | LINK_ATTR_IFNAME))) {
1558 APPBUG(
"ifindex or name must be specified");
1559 return -NLE_MISSING_ATTR;
1565 if (
nlmsg_append(msg, &ifi,
sizeof(ifi), NLMSG_ALIGNTO) < 0)
1566 goto nla_put_failure;
1568 if (link->ce_mask & LINK_ATTR_IFNAME)
1576 return -NLE_MSGSIZE;
1657 strncpy(link->l_name, name,
sizeof(link->l_name) - 1);
1658 link->ce_mask |= LINK_ATTR_IFNAME;
1671 return link->ce_mask & LINK_ATTR_IFNAME ? link->l_name : NULL;
1681 link->l_group = group;
1682 link->ce_mask |= LINK_ATTR_GROUP;
1693 return link->l_group;
1696 static inline void __assign_addr(
struct rtnl_link *link,
struct nl_addr **pos,
1697 struct nl_addr *
new,
int flag)
1705 link->ce_mask |= flag;
1721 __assign_addr(link, &link->l_addr, addr, LINK_ATTR_ADDR);
1735 return link->ce_mask & LINK_ATTR_ADDR ? link->l_addr : NULL;
1752 __assign_addr(link, &link->l_bcast, addr, LINK_ATTR_BRD);
1766 return link->ce_mask & LINK_ATTR_BRD ? link->l_bcast : NULL;
1779 link->l_flag_mask |= flags;
1780 link->l_flags |= flags;
1781 link->ce_mask |= LINK_ATTR_FLAGS;
1794 link->l_flag_mask |= flags;
1795 link->l_flags &= ~flags;
1796 link->ce_mask |= LINK_ATTR_FLAGS;
1810 return link->l_flags;
1820 link->l_family = family;
1821 link->ce_mask |= LINK_ATTR_FAMILY;
1823 if (link->l_af_ops) {
1824 af_free(link, link->l_af_ops,
1825 link->l_af_data[link->l_af_ops->ao_family], NULL);
1826 link->l_af_data[link->l_af_ops->ao_family] = NULL;
1829 link->l_af_ops = af_lookup_and_alloc(link, family);
1841 return link->ce_mask & LINK_ATTR_FAMILY ? link->l_family : AF_UNSPEC;
1855 link->l_arptype = arptype;
1856 link->ce_mask |= LINK_ATTR_ARPTYPE;
1869 if (link->ce_mask & LINK_ATTR_ARPTYPE)
1870 return link->l_arptype;
1885 link->l_index = ifindex;
1886 link->ce_mask |= LINK_ATTR_IFINDEX;
1900 return link->l_index;
1914 link->ce_mask |= LINK_ATTR_MTU;
1942 link->l_txqlen = txqlen;
1943 link->ce_mask |= LINK_ATTR_TXQLEN;
1958 return link->ce_mask & LINK_ATTR_TXQLEN ? link->l_txqlen : 0;
1961 void rtnl_link_set_link(
struct rtnl_link *link,
int ifindex)
1963 link->l_link = ifindex;
1964 link->ce_mask |= LINK_ATTR_LINK;
1967 int rtnl_link_get_link(
struct rtnl_link *link)
1969 return link->l_link;
1981 link->l_master = ifindex;
1982 link->ce_mask |= LINK_ATTR_MASTER;
1994 return link->l_master;
2006 link->l_carrier = status;
2007 link->ce_mask |= LINK_ATTR_CARRIER;
2019 return link->l_carrier;
2032 link->l_operstate = status;
2033 link->ce_mask |= LINK_ATTR_OPERSTATE;
2046 return link->l_operstate;
2059 link->l_linkmode = mode;
2060 link->ce_mask |= LINK_ATTR_LINKMODE;
2073 return link->l_linkmode;
2086 return link->l_ifalias;
2103 free(link->l_ifalias);
2104 link->ce_mask &= ~LINK_ATTR_IFALIAS;
2107 link->l_ifalias = strdup(alias);
2108 link->ce_mask |= LINK_ATTR_IFALIAS;
2127 strncpy(link->l_qdisc, name,
sizeof(link->l_qdisc) - 1);
2128 link->ce_mask |= LINK_ATTR_QDISC;
2141 return link->ce_mask & LINK_ATTR_QDISC ? link->l_qdisc : NULL;
2154 if (link->ce_mask & LINK_ATTR_NUM_VF) {
2155 *num_vf = link->l_num_vf;
2158 return -NLE_OPNOTSUPP;
2170 if (
id > RTNL_LINK_STATS_MAX)
2173 return link->l_stats[id];
2188 const uint64_t value)
2190 if (
id > RTNL_LINK_STATS_MAX)
2193 link->l_stats[id] = value;
2212 struct rtnl_link_info_ops *io;
2216 free(link->l_info_kind);
2217 link->ce_mask &= ~LINK_ATTR_LINKINFO;
2218 if (link->l_info_ops)
2219 release_link_info(link);
2224 kind = strdup(type);
2230 if (io->io_alloc && (err = io->io_alloc(link)) < 0)
2233 link->l_info_ops = io;
2236 link->l_info_kind = kind;
2237 link->ce_mask |= LINK_ATTR_LINKINFO;
2255 return link->l_info_kind;
2269 link->l_promiscuity = count;
2270 link->ce_mask |= LINK_ATTR_PROMISCUITY;
2282 return link->l_promiscuity;
2301 link->l_num_tx_queues = nqueues;
2302 link->ce_mask |= LINK_ATTR_NUM_TX_QUEUES;
2313 return link->l_num_tx_queues;
2332 link->l_num_rx_queues = nqueues;
2333 link->ce_mask |= LINK_ATTR_NUM_RX_QUEUES;
2344 return link->l_num_rx_queues;
2355 return link->l_phys_port_id;
2358 void rtnl_link_set_ns_fd(
struct rtnl_link *link,
int fd)
2361 link->ce_mask |= LINK_ATTR_NS_FD;
2364 int rtnl_link_get_ns_fd(
struct rtnl_link *link)
2366 return link->l_ns_fd;
2369 void rtnl_link_set_ns_pid(
struct rtnl_link *link, pid_t pid)
2371 link->l_ns_pid = pid;
2372 link->ce_mask |= LINK_ATTR_NS_PID;
2375 pid_t rtnl_link_get_ns_pid(
struct rtnl_link *link)
2377 return link->l_ns_pid;
2427 err = -NLE_OPNOTSUPP;
2510 static const struct trans_tbl link_flags[] = {
2511 __ADD(IFF_LOOPBACK, loopback)
2512 __ADD(IFF_BROADCAST, broadcast)
2513 __ADD(IFF_POINTOPOINT, pointopoint)
2514 __ADD(IFF_MULTICAST, multicast)
2515 __ADD(IFF_NOARP, noarp)
2516 __ADD(IFF_ALLMULTI, allmulti)
2517 __ADD(IFF_PROMISC, promisc)
2518 __ADD(IFF_MASTER, master)
2519 __ADD(IFF_SLAVE, slave)
2520 __ADD(IFF_DEBUG, debug)
2521 __ADD(IFF_DYNAMIC, dynamic)
2522 __ADD(IFF_AUTOMEDIA, automedia)
2523 __ADD(IFF_PORTSEL, portsel)
2524 __ADD(IFF_NOTRAILERS, notrailers)
2526 __ADD(IFF_RUNNING, running)
2527 __ADD(IFF_LOWER_UP, lowerup)
2528 __ADD(IFF_DORMANT, dormant)
2529 __ADD(IFF_ECHO, echo)
2532 char *rtnl_link_flags2str(
int flags,
char *buf,
size_t len)
2534 return __flags2str(flags, buf, len, link_flags,
2535 ARRAY_SIZE(link_flags));
2538 int rtnl_link_str2flags(
const char *name)
2540 return __str2flags(name, link_flags, ARRAY_SIZE(link_flags));
2543 static const struct trans_tbl link_stats[] = {
2603 char *rtnl_link_stat2str(
int st,
char *buf,
size_t len)
2605 return __type2str(st, buf, len, link_stats, ARRAY_SIZE(link_stats));
2608 int rtnl_link_str2stat(
const char *name)
2610 return __str2type(name, link_stats, ARRAY_SIZE(link_stats));
2613 static const struct trans_tbl link_operstates[] = {
2614 __ADD(IF_OPER_UNKNOWN, unknown)
2615 __ADD(IF_OPER_NOTPRESENT, notpresent)
2616 __ADD(IF_OPER_DOWN, down)
2617 __ADD(IF_OPER_LOWERLAYERDOWN, lowerlayerdown)
2618 __ADD(IF_OPER_TESTING, testing)
2619 __ADD(IF_OPER_DORMANT, dormant)
2620 __ADD(IF_OPER_UP, up)
2623 char *rtnl_link_operstate2str(uint8_t st,
char *buf,
size_t len)
2625 return __type2str(st, buf, len, link_operstates,
2626 ARRAY_SIZE(link_operstates));
2629 int rtnl_link_str2operstate(
const char *name)
2631 return __str2type(name, link_operstates,
2632 ARRAY_SIZE(link_operstates));
2635 static const struct trans_tbl link_modes[] = {
2636 __ADD(IF_LINK_MODE_DEFAULT,
default)
2637 __ADD(IF_LINK_MODE_DORMANT, dormant)
2640 static const struct trans_tbl carrier_states[] = {
2641 __ADD(IF_CARRIER_DOWN, down)
2642 __ADD(IF_CARRIER_UP, up)
2645 char *rtnl_link_mode2str(uint8_t st,
char *buf,
size_t len)
2647 return __type2str(st, buf, len, link_modes, ARRAY_SIZE(link_modes));
2650 int rtnl_link_str2mode(
const char *name)
2652 return __str2type(name, link_modes, ARRAY_SIZE(link_modes));
2655 char *rtnl_link_carrier2str(uint8_t st,
char *buf,
size_t len)
2657 return __type2str(st, buf, len, carrier_states,
2658 ARRAY_SIZE(carrier_states));
2661 int rtnl_link_str2carrier(
const char *name)
2663 return __str2type(name, carrier_states, ARRAY_SIZE(carrier_states));
2693 link->l_weight = weight;
2694 link->ce_mask |= LINK_ATTR_WEIGHT;
2702 return link->l_weight;
2707 static struct nl_object_ops link_obj_ops = {
2708 .oo_name =
"route/link",
2710 .oo_free_data = link_free_data,
2711 .oo_clone = link_clone,
2717 .oo_compare = link_compare,
2718 .oo_keygen = link_keygen,
2719 .oo_attrs2str = link_attrs2str,
2720 .oo_id_attrs = LINK_ATTR_IFINDEX | LINK_ATTR_FAMILY,
2723 static struct nl_af_group link_groups[] = {
2724 { AF_UNSPEC, RTNLGRP_LINK },
2725 { AF_BRIDGE, RTNLGRP_LINK },
2726 { END_OF_GROUP_LIST },
2729 static struct nl_cache_ops rtnl_link_ops = {
2730 .co_name =
"route/link",
2731 .co_hdrsize =
sizeof(
struct ifinfomsg),
2733 { RTM_NEWLINK, NL_ACT_NEW,
"new" },
2734 { RTM_DELLINK, NL_ACT_DEL,
"del" },
2735 { RTM_GETLINK, NL_ACT_GET,
"get" },
2736 { RTM_SETLINK, NL_ACT_CHANGE,
"set" },
2737 END_OF_MSGTYPES_LIST,
2739 .co_protocol = NETLINK_ROUTE,
2740 .co_groups = link_groups,
2741 .co_request_update = link_request_update,
2742 .co_msg_parser = link_msg_parser,
2743 .co_obj_ops = &link_obj_ops,
2746 static void __init link_init(
void)
2751 static void __exit link_exit(
void)