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;
199 BUG_ON(link->l_info);
202 link->l_info_ops = NULL;
206 static void link_free_data(
struct nl_object *c)
208 struct rtnl_link *link = nl_object_priv(c);
211 struct rtnl_link_info_ops *io;
213 if ((io = link->l_info_ops) != NULL)
214 release_link_info(link);
222 free(link->l_ifalias);
223 free(link->l_info_kind);
225 do_foreach_af(link, af_free, NULL);
231 static int link_clone(
struct nl_object *_dst,
struct nl_object *_src)
233 struct rtnl_link *dst = nl_object_priv(_dst);
234 struct rtnl_link *src = nl_object_priv(_src);
246 if (!(dst->l_ifalias = strdup(src->l_ifalias)))
249 if (src->l_info_kind)
250 if (!(dst->l_info_kind = strdup(src->l_info_kind)))
253 if (src->l_info_ops && src->l_info_ops->io_clone) {
254 err = src->l_info_ops->io_clone(dst, src);
259 if ((err = do_foreach_af(src, af_clone, dst)) < 0)
262 if (src->l_phys_port_id)
263 if (!(dst->l_phys_port_id =
nl_data_clone(src->l_phys_port_id)))
269 struct nla_policy rtln_link_policy[IFLA_MAX+1] = {
271 .maxlen = IFNAMSIZ },
272 [IFLA_MTU] = { .type =
NLA_U32 },
273 [IFLA_TXQLEN] = { .type =
NLA_U32 },
274 [IFLA_LINK] = { .type =
NLA_U32 },
275 [IFLA_WEIGHT] = { .type =
NLA_U32 },
276 [IFLA_MASTER] = { .type =
NLA_U32 },
277 [IFLA_OPERSTATE] = { .type =
NLA_U8 },
278 [IFLA_LINKMODE] = { .type =
NLA_U8 },
281 .maxlen = IFQDISCSIZ },
282 [IFLA_STATS] = { .minlen =
sizeof(
struct rtnl_link_stats) },
283 [IFLA_STATS64] = { .minlen =
sizeof(
struct rtnl_link_stats64)},
284 [IFLA_MAP] = { .minlen =
sizeof(
struct rtnl_link_ifmap) },
285 [IFLA_IFALIAS] = { .type =
NLA_STRING, .maxlen = IFALIASZ },
286 [IFLA_NUM_VF] = { .type =
NLA_U32 },
288 [IFLA_PROMISCUITY] = { .type =
NLA_U32 },
289 [IFLA_NUM_TX_QUEUES] = { .type =
NLA_U32 },
290 [IFLA_NUM_RX_QUEUES] = { .type =
NLA_U32 },
291 [IFLA_GROUP] = { .type =
NLA_U32 },
292 [IFLA_CARRIER] = { .type =
NLA_U8 },
294 [IFLA_NET_NS_PID] = { .type =
NLA_U32 },
295 [IFLA_NET_NS_FD] = { .type =
NLA_U32 },
298 static struct nla_policy link_info_policy[IFLA_INFO_MAX+1] = {
304 int rtnl_link_info_parse(
struct rtnl_link *link,
struct nlattr **tb)
306 if (tb[IFLA_IFNAME] == NULL)
307 return -NLE_MISSING_ATTR;
309 nla_strlcpy(link->l_name, tb[IFLA_IFNAME], IFNAMSIZ);
312 if (tb[IFLA_STATS]) {
313 struct rtnl_link_stats *st =
nla_data(tb[IFLA_STATS]);
342 link->ce_mask |= LINK_ATTR_STATS;
345 if (tb[IFLA_STATS64]) {
353 struct rtnl_link_stats64 st;
356 sizeof(
struct rtnl_link_stats64));
385 link->ce_mask |= LINK_ATTR_STATS;
388 if (tb[IFLA_TXQLEN]) {
390 link->ce_mask |= LINK_ATTR_TXQLEN;
395 link->ce_mask |= LINK_ATTR_MTU;
398 if (tb[IFLA_ADDRESS]) {
400 if (link->l_addr == NULL)
404 link->ce_mask |= LINK_ATTR_ADDR;
407 if (tb[IFLA_BROADCAST]) {
410 if (link->l_bcast == NULL)
414 link->ce_mask |= LINK_ATTR_BRD;
419 link->ce_mask |= LINK_ATTR_LINK;
422 if (tb[IFLA_WEIGHT]) {
424 link->ce_mask |= LINK_ATTR_WEIGHT;
427 if (tb[IFLA_QDISC]) {
428 nla_strlcpy(link->l_qdisc, tb[IFLA_QDISC], IFQDISCSIZ);
429 link->ce_mask |= LINK_ATTR_QDISC;
434 sizeof(
struct rtnl_link_ifmap));
435 link->ce_mask |= LINK_ATTR_MAP;
438 if (tb[IFLA_MASTER]) {
440 link->ce_mask |= LINK_ATTR_MASTER;
443 if (tb[IFLA_CARRIER]) {
444 link->l_carrier =
nla_get_u8(tb[IFLA_CARRIER]);
445 link->ce_mask |= LINK_ATTR_CARRIER;
448 if (tb[IFLA_OPERSTATE]) {
449 link->l_operstate =
nla_get_u8(tb[IFLA_OPERSTATE]);
450 link->ce_mask |= LINK_ATTR_OPERSTATE;
453 if (tb[IFLA_LINKMODE]) {
454 link->l_linkmode =
nla_get_u8(tb[IFLA_LINKMODE]);
455 link->ce_mask |= LINK_ATTR_LINKMODE;
458 if (tb[IFLA_IFALIAS]) {
459 link->l_ifalias = nla_strdup(tb[IFLA_IFALIAS]);
460 if (link->l_ifalias == NULL)
462 link->ce_mask |= LINK_ATTR_IFALIAS;
465 if (tb[IFLA_NET_NS_FD]) {
467 link->ce_mask |= LINK_ATTR_NS_FD;
470 if (tb[IFLA_NET_NS_PID]) {
472 link->ce_mask |= LINK_ATTR_NS_PID;
478 static int link_msg_parser(
struct nl_cache_ops *ops,
struct sockaddr_nl *who,
479 struct nlmsghdr *n,
struct nl_parser_param *pp)
482 struct ifinfomsg *ifi;
483 struct nlattr *tb[IFLA_MAX+1];
484 struct rtnl_link_af_ops *af_ops = NULL;
486 struct nla_policy real_link_policy[IFLA_MAX+1];
488 memcpy(&real_link_policy, rtln_link_policy,
sizeof(rtln_link_policy));
496 link->ce_msgtype = n->nlmsg_type;
498 if (!nlmsg_valid_hdr(n,
sizeof(*ifi)))
499 return -NLE_MSG_TOOSHORT;
502 link->l_family = family = ifi->ifi_family;
503 link->l_arptype = ifi->ifi_type;
504 link->l_index = ifi->ifi_index;
505 link->l_flags = ifi->ifi_flags;
506 link->l_change = ifi->ifi_change;
507 link->ce_mask = (LINK_ATTR_IFNAME | LINK_ATTR_FAMILY |
508 LINK_ATTR_ARPTYPE| LINK_ATTR_IFINDEX |
509 LINK_ATTR_FLAGS | LINK_ATTR_CHANGE);
511 if ((af_ops = af_lookup_and_alloc(link, family))) {
512 if (af_ops->ao_protinfo_policy) {
513 memcpy(&real_link_policy[IFLA_PROTINFO],
514 af_ops->ao_protinfo_policy,
518 link->l_af_ops = af_ops;
521 err =
nlmsg_parse(n,
sizeof(*ifi), tb, IFLA_MAX, real_link_policy);
525 err = rtnl_link_info_parse(link, tb);
529 if (tb[IFLA_NUM_VF]) {
531 link->ce_mask |= LINK_ATTR_NUM_VF;
534 if (tb[IFLA_LINKINFO]) {
535 struct nlattr *li[IFLA_INFO_MAX+1];
542 if (li[IFLA_INFO_KIND]) {
543 struct rtnl_link_info_ops *ops;
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));
1020 struct nl_cache * cache;
1027 cache->c_iarg1 = family;
1057 if (cache->c_ops != &rtnl_link_ops)
1060 nl_list_for_each_entry(link, &cache->c_items, ce_list) {
1061 if (link->l_index == ifindex) {
1090 if (cache->c_ops != &rtnl_link_ops)
1093 nl_list_for_each_entry(link, &cache->c_items, ce_list) {
1094 if (!strcmp(name, link->l_name)) {
1118 struct nl_msg **result)
1120 struct ifinfomsg ifi;
1123 if (ifindex <= 0 && !name) {
1124 APPBUG(
"ifindex or name must be specified");
1125 return -NLE_MISSING_ATTR;
1128 memset(&ifi, 0,
sizeof(ifi));
1134 ifi.ifi_index = ifindex;
1136 if (
nlmsg_append(msg, &ifi,
sizeof(ifi), NLMSG_ALIGNTO) < 0)
1137 goto nla_put_failure;
1147 return -NLE_MSGSIZE;
1174 struct nl_msg *msg = NULL;
1175 struct nl_object *obj;
1188 if (syserr == -EINVAL &&
1195 return -NLE_OPNOTSUPP;
1204 if (err == 0 && obj)
1230 strncpy(dst, link->l_name, len - 1);
1254 ifindex = link->l_index;
1263 int rtnl_link_fill_info(
struct nl_msg *msg,
struct rtnl_link *link)
1265 if (link->ce_mask & LINK_ATTR_ADDR)
1268 if (link->ce_mask & LINK_ATTR_BRD)
1271 if (link->ce_mask & LINK_ATTR_MTU)
1274 if (link->ce_mask & LINK_ATTR_TXQLEN)
1277 if (link->ce_mask & LINK_ATTR_WEIGHT)
1280 if (link->ce_mask & LINK_ATTR_IFNAME)
1283 if (link->ce_mask & LINK_ATTR_OPERSTATE)
1284 NLA_PUT_U8(msg, IFLA_OPERSTATE, link->l_operstate);
1286 if (link->ce_mask & LINK_ATTR_CARRIER)
1287 NLA_PUT_U8(msg, IFLA_CARRIER, link->l_carrier);
1289 if (link->ce_mask & LINK_ATTR_LINKMODE)
1290 NLA_PUT_U8(msg, IFLA_LINKMODE, link->l_linkmode);
1292 if (link->ce_mask & LINK_ATTR_IFALIAS)
1295 if (link->ce_mask & LINK_ATTR_LINK)
1298 if (link->ce_mask & LINK_ATTR_MASTER)
1301 if (link->ce_mask & LINK_ATTR_NUM_TX_QUEUES)
1302 NLA_PUT_U32(msg, IFLA_NUM_TX_QUEUES, link->l_num_tx_queues);
1304 if (link->ce_mask & LINK_ATTR_NUM_RX_QUEUES)
1305 NLA_PUT_U32(msg, IFLA_NUM_RX_QUEUES, link->l_num_rx_queues);
1307 if (link->ce_mask & LINK_ATTR_NS_FD)
1310 if (link->ce_mask & LINK_ATTR_NS_PID)
1311 NLA_PUT_U32(msg, IFLA_NET_NS_PID, link->l_ns_pid);
1316 return -NLE_MSGSIZE;
1319 static int build_link_msg(
int cmd,
struct ifinfomsg *hdr,
1320 struct rtnl_link *link,
int flags,
struct nl_msg **result)
1323 struct nlattr *af_spec;
1329 if (
nlmsg_append(msg, hdr,
sizeof(*hdr), NLMSG_ALIGNTO) < 0)
1330 goto nla_put_failure;
1332 if (rtnl_link_fill_info(msg, link))
1333 goto nla_put_failure;
1335 if (link->ce_mask & LINK_ATTR_GROUP)
1338 if (link->ce_mask & LINK_ATTR_LINKINFO) {
1339 struct nlattr *info;
1342 goto nla_put_failure;
1346 if (link->l_info_ops) {
1347 if (link->l_info_ops->io_put_attrs &&
1348 link->l_info_ops->io_put_attrs(msg, link) < 0)
1349 goto nla_put_failure;
1356 goto nla_put_failure;
1358 if (do_foreach_af(link, af_fill, msg) < 0)
1359 goto nla_put_failure;
1368 return -NLE_MSGSIZE;
1393 struct nl_msg **result)
1395 struct ifinfomsg ifi = {
1396 .ifi_family = link->l_family,
1397 .ifi_index = link->l_index,
1398 .ifi_flags = link->l_flags,
1401 return build_link_msg(RTM_NEWLINK, &ifi, link, flags, result);
1455 struct nl_msg **result)
1457 struct ifinfomsg ifi = {
1458 .ifi_family = orig->l_family,
1459 .ifi_index = orig->l_index,
1463 if (changes->ce_mask & LINK_ATTR_FLAGS) {
1464 ifi.ifi_flags = orig->l_flags & ~changes->l_flag_mask;
1465 ifi.ifi_flags |= changes->l_flags;
1468 if (changes->l_family && changes->l_family != orig->l_family) {
1469 APPBUG(
"link change: family is immutable");
1470 return -NLE_IMMUTABLE;
1474 if (orig->ce_mask & LINK_ATTR_IFINDEX &&
1475 orig->ce_mask & LINK_ATTR_IFNAME &&
1476 changes->ce_mask & LINK_ATTR_IFNAME &&
1477 !strcmp(orig->l_name, changes->l_name))
1478 changes->ce_mask &= ~LINK_ATTR_IFNAME;
1480 if ((err = build_link_msg(RTM_NEWLINK, &ifi, changes, flags, result)) < 0)
1535 err = wait_for_ack(sk);
1536 if (err == -NLE_OPNOTSUPP && msg->nm_nlh->nlmsg_type == RTM_NEWLINK) {
1537 msg->nm_nlh->nlmsg_type = RTM_SETLINK;
1567 struct nl_msg **result)
1570 struct ifinfomsg ifi = {
1571 .ifi_index = link->l_index,
1574 if (!(link->ce_mask & (LINK_ATTR_IFINDEX | LINK_ATTR_IFNAME))) {
1575 APPBUG(
"ifindex or name must be specified");
1576 return -NLE_MISSING_ATTR;
1582 if (
nlmsg_append(msg, &ifi,
sizeof(ifi), NLMSG_ALIGNTO) < 0)
1583 goto nla_put_failure;
1585 if (link->ce_mask & LINK_ATTR_IFNAME)
1593 return -NLE_MSGSIZE;
1674 strncpy(link->l_name, name,
sizeof(link->l_name) - 1);
1675 link->ce_mask |= LINK_ATTR_IFNAME;
1688 return link->ce_mask & LINK_ATTR_IFNAME ? link->l_name : NULL;
1698 link->l_group = group;
1699 link->ce_mask |= LINK_ATTR_GROUP;
1710 return link->l_group;
1713 static inline void __assign_addr(
struct rtnl_link *link,
struct nl_addr **pos,
1714 struct nl_addr *
new,
int flag)
1722 link->ce_mask |= flag;
1738 __assign_addr(link, &link->l_addr, addr, LINK_ATTR_ADDR);
1752 return link->ce_mask & LINK_ATTR_ADDR ? link->l_addr : NULL;
1769 __assign_addr(link, &link->l_bcast, addr, LINK_ATTR_BRD);
1783 return link->ce_mask & LINK_ATTR_BRD ? link->l_bcast : NULL;
1796 link->l_flag_mask |= flags;
1797 link->l_flags |= flags;
1798 link->ce_mask |= LINK_ATTR_FLAGS;
1811 link->l_flag_mask |= flags;
1812 link->l_flags &= ~flags;
1813 link->ce_mask |= LINK_ATTR_FLAGS;
1827 return link->l_flags;
1837 link->l_family = family;
1838 link->ce_mask |= LINK_ATTR_FAMILY;
1840 if (link->l_af_ops) {
1841 af_free(link, link->l_af_ops,
1842 link->l_af_data[link->l_af_ops->ao_family], NULL);
1843 link->l_af_data[link->l_af_ops->ao_family] = NULL;
1846 link->l_af_ops = af_lookup_and_alloc(link, family);
1858 return link->ce_mask & LINK_ATTR_FAMILY ? link->l_family : AF_UNSPEC;
1872 link->l_arptype = arptype;
1873 link->ce_mask |= LINK_ATTR_ARPTYPE;
1886 if (link->ce_mask & LINK_ATTR_ARPTYPE)
1887 return link->l_arptype;
1902 link->l_index = ifindex;
1903 link->ce_mask |= LINK_ATTR_IFINDEX;
1917 return link->l_index;
1931 link->ce_mask |= LINK_ATTR_MTU;
1959 link->l_txqlen = txqlen;
1960 link->ce_mask |= LINK_ATTR_TXQLEN;
1975 return link->ce_mask & LINK_ATTR_TXQLEN ? link->l_txqlen : 0;
1978 void rtnl_link_set_link(
struct rtnl_link *link,
int ifindex)
1980 link->l_link = ifindex;
1981 link->ce_mask |= LINK_ATTR_LINK;
1984 int rtnl_link_get_link(
struct rtnl_link *link)
1986 return link->l_link;
1998 link->l_master = ifindex;
1999 link->ce_mask |= LINK_ATTR_MASTER;
2011 return link->l_master;
2023 link->l_carrier = status;
2024 link->ce_mask |= LINK_ATTR_CARRIER;
2036 return link->l_carrier;
2049 link->l_operstate = status;
2050 link->ce_mask |= LINK_ATTR_OPERSTATE;
2063 return link->l_operstate;
2076 link->l_linkmode = mode;
2077 link->ce_mask |= LINK_ATTR_LINKMODE;
2090 return link->l_linkmode;
2103 return link->l_ifalias;
2120 free(link->l_ifalias);
2123 link->l_ifalias = strdup(alias);
2124 link->ce_mask |= LINK_ATTR_IFALIAS;
2126 link->l_ifalias = NULL;
2127 link->ce_mask &= ~LINK_ATTR_IFALIAS;
2146 strncpy(link->l_qdisc, name,
sizeof(link->l_qdisc) - 1);
2147 link->ce_mask |= LINK_ATTR_QDISC;
2160 return link->ce_mask & LINK_ATTR_QDISC ? link->l_qdisc : NULL;
2173 if (link->ce_mask & LINK_ATTR_NUM_VF) {
2174 *num_vf = link->l_num_vf;
2177 return -NLE_OPNOTSUPP;
2189 if (
id > RTNL_LINK_STATS_MAX)
2192 return link->l_stats[id];
2207 const uint64_t value)
2209 if (
id > RTNL_LINK_STATS_MAX)
2212 link->l_stats[id] = value;
2231 struct rtnl_link_info_ops *io;
2235 free(link->l_info_kind);
2236 link->ce_mask &= ~LINK_ATTR_LINKINFO;
2237 if (link->l_info_ops)
2238 release_link_info(link);
2243 kind = strdup(type);
2249 if (io->io_alloc && (err = io->io_alloc(link)) < 0)
2252 link->l_info_ops = io;
2255 link->l_info_kind = kind;
2256 link->ce_mask |= LINK_ATTR_LINKINFO;
2274 return link->l_info_kind;
2288 link->l_promiscuity = count;
2289 link->ce_mask |= LINK_ATTR_PROMISCUITY;
2301 return link->l_promiscuity;
2320 link->l_num_tx_queues = nqueues;
2321 link->ce_mask |= LINK_ATTR_NUM_TX_QUEUES;
2332 return link->l_num_tx_queues;
2351 link->l_num_rx_queues = nqueues;
2352 link->ce_mask |= LINK_ATTR_NUM_RX_QUEUES;
2363 return link->l_num_rx_queues;
2374 return link->l_phys_port_id;
2377 void rtnl_link_set_ns_fd(
struct rtnl_link *link,
int fd)
2380 link->ce_mask |= LINK_ATTR_NS_FD;
2383 int rtnl_link_get_ns_fd(
struct rtnl_link *link)
2385 return link->l_ns_fd;
2388 void rtnl_link_set_ns_pid(
struct rtnl_link *link, pid_t pid)
2390 link->l_ns_pid = pid;
2391 link->ce_mask |= LINK_ATTR_NS_PID;
2394 pid_t rtnl_link_get_ns_pid(
struct rtnl_link *link)
2396 return link->l_ns_pid;
2446 err = -NLE_OPNOTSUPP;
2529 static const struct trans_tbl link_flags[] = {
2530 __ADD(IFF_LOOPBACK, loopback),
2531 __ADD(IFF_BROADCAST, broadcast),
2532 __ADD(IFF_POINTOPOINT, pointopoint),
2533 __ADD(IFF_MULTICAST, multicast),
2534 __ADD(IFF_NOARP, noarp),
2535 __ADD(IFF_ALLMULTI, allmulti),
2536 __ADD(IFF_PROMISC, promisc),
2537 __ADD(IFF_MASTER, master),
2538 __ADD(IFF_SLAVE, slave),
2539 __ADD(IFF_DEBUG, debug),
2540 __ADD(IFF_DYNAMIC, dynamic),
2541 __ADD(IFF_AUTOMEDIA, automedia),
2542 __ADD(IFF_PORTSEL, portsel),
2543 __ADD(IFF_NOTRAILERS, notrailers),
2545 __ADD(IFF_RUNNING, running),
2546 __ADD(IFF_LOWER_UP, lowerup),
2547 __ADD(IFF_DORMANT, dormant),
2548 __ADD(IFF_ECHO, echo),
2551 char *rtnl_link_flags2str(
int flags,
char *buf,
size_t len)
2553 return __flags2str(flags, buf, len, link_flags,
2554 ARRAY_SIZE(link_flags));
2557 int rtnl_link_str2flags(
const char *name)
2559 return __str2flags(name, link_flags, ARRAY_SIZE(link_flags));
2562 static const struct trans_tbl link_stats[] = {
2628 char *rtnl_link_stat2str(
int st,
char *buf,
size_t len)
2630 return __type2str(st, buf, len, link_stats, ARRAY_SIZE(link_stats));
2633 int rtnl_link_str2stat(
const char *name)
2635 return __str2type(name, link_stats, ARRAY_SIZE(link_stats));
2638 static const struct trans_tbl link_operstates[] = {
2639 __ADD(IF_OPER_UNKNOWN, unknown),
2640 __ADD(IF_OPER_NOTPRESENT, notpresent),
2641 __ADD(IF_OPER_DOWN, down),
2642 __ADD(IF_OPER_LOWERLAYERDOWN, lowerlayerdown),
2643 __ADD(IF_OPER_TESTING, testing),
2644 __ADD(IF_OPER_DORMANT, dormant),
2645 __ADD(IF_OPER_UP, up),
2648 char *rtnl_link_operstate2str(uint8_t st,
char *buf,
size_t len)
2650 return __type2str(st, buf, len, link_operstates,
2651 ARRAY_SIZE(link_operstates));
2654 int rtnl_link_str2operstate(
const char *name)
2656 return __str2type(name, link_operstates,
2657 ARRAY_SIZE(link_operstates));
2660 static const struct trans_tbl link_modes[] = {
2661 __ADD(IF_LINK_MODE_DEFAULT,
default),
2662 __ADD(IF_LINK_MODE_DORMANT, dormant),
2665 static const struct trans_tbl carrier_states[] = {
2666 __ADD(IF_CARRIER_DOWN, down),
2667 __ADD(IF_CARRIER_UP, up),
2670 char *rtnl_link_mode2str(uint8_t st,
char *buf,
size_t len)
2672 return __type2str(st, buf, len, link_modes, ARRAY_SIZE(link_modes));
2675 int rtnl_link_str2mode(
const char *name)
2677 return __str2type(name, link_modes, ARRAY_SIZE(link_modes));
2680 char *rtnl_link_carrier2str(uint8_t st,
char *buf,
size_t len)
2682 return __type2str(st, buf, len, carrier_states,
2683 ARRAY_SIZE(carrier_states));
2686 int rtnl_link_str2carrier(
const char *name)
2688 return __str2type(name, carrier_states, ARRAY_SIZE(carrier_states));
2718 link->l_weight = weight;
2719 link->ce_mask |= LINK_ATTR_WEIGHT;
2727 return link->l_weight;
2732 static struct nl_object_ops link_obj_ops = {
2733 .oo_name =
"route/link",
2735 .oo_free_data = link_free_data,
2736 .oo_clone = link_clone,
2742 .oo_compare = link_compare,
2743 .oo_keygen = link_keygen,
2744 .oo_attrs2str = link_attrs2str,
2745 .oo_id_attrs = LINK_ATTR_IFINDEX | LINK_ATTR_FAMILY,
2748 static struct nl_af_group link_groups[] = {
2749 { AF_UNSPEC, RTNLGRP_LINK },
2750 { AF_BRIDGE, RTNLGRP_LINK },
2751 { END_OF_GROUP_LIST },
2754 static struct nl_cache_ops rtnl_link_ops = {
2755 .co_name =
"route/link",
2756 .co_hdrsize =
sizeof(
struct ifinfomsg),
2758 { RTM_NEWLINK, NL_ACT_NEW,
"new" },
2759 { RTM_DELLINK, NL_ACT_DEL,
"del" },
2760 { RTM_GETLINK, NL_ACT_GET,
"get" },
2761 { RTM_SETLINK, NL_ACT_CHANGE,
"set" },
2762 END_OF_MSGTYPES_LIST,
2764 .co_protocol = NETLINK_ROUTE,
2765 .co_groups = link_groups,
2766 .co_request_update = link_request_update,
2767 .co_msg_parser = link_msg_parser,
2768 .co_obj_ops = &link_obj_ops,
2771 static void __init link_init(
void)
2776 static void __exit link_exit(
void)
int nl_send_auto_complete(struct nl_sock *sk, struct nl_msg *msg)
struct nl_addr * nl_addr_clone(const struct nl_addr *addr)
Clone existing abstract address object.
Dump object briefly on one line.
uint32_t rtnl_link_get_group(struct rtnl_link *link)
Return the group identifier of link object.
void nlmsg_free(struct nl_msg *msg)
Release a reference from an netlink message.
struct rtnl_link * rtnl_link_get_by_name(struct nl_cache *cache, const char *name)
Lookup link in cache by link name.
int nl_addr_cmp(const struct nl_addr *a, const struct nl_addr *b)
Compare abstract addresses.
int nl_addr_guess_family(const struct nl_addr *addr)
Guess address family of abstract address based on address size.
void * nlmsg_data(const struct nlmsghdr *nlh)
Return pointer to message payload.
void rtnl_link_set_master(struct rtnl_link *link, int ifindex)
Set master link of link object.
void rtnl_link_set_ifindex(struct rtnl_link *link, int ifindex)
Set interface index of link object.
void rtnl_link_unset_flags(struct rtnl_link *link, unsigned int flags)
Unset flags of link object.
#define NLA_PUT_ADDR(msg, attrtype, addr)
Add address attribute to netlink message.
int rtnl_link_set_info_type(struct rtnl_link *link, const char *type)
void rtnl_link_set_arptype(struct rtnl_link *link, unsigned int arptype)
Set hardware type of link object.
char * rtnl_link_get_qdisc(struct rtnl_link *link)
Return name of queueing discipline of link object.
struct rtnl_link * rtnl_link_get(struct nl_cache *cache, int ifindex)
Lookup link in cache by interface index.
struct nl_object * nl_object_alloc(struct nl_object_ops *ops)
Allocate a new object of kind specified by the operations handle.
int nl_cache_mngt_unregister(struct nl_cache_ops *ops)
Unregister a set of cache operations.
Attribute validation policy.
uint8_t nla_get_u8(const struct nlattr *nla)
Return value of 8 bit integer attribute.
struct rtnl_link * rtnl_link_alloc(void)
Allocate link object.
Unspecified type, binary data chunk.
struct nl_cache * nl_cache_mngt_require_safe(const char *name)
Return cache previously provided via nl_cache_mngt_provide()
void nl_object_get(struct nl_object *obj)
Acquire a reference on a object.
int nl_send_sync(struct nl_sock *sk, struct nl_msg *msg)
Finalize and transmit Netlink message and wait for ACK or error message.
char * nla_get_string(const struct nlattr *nla)
Return payload of string attribute.
int nl_pickup_keep_syserr(struct nl_sock *sk, int(*parser)(struct nl_cache_ops *, struct sockaddr_nl *, struct nlmsghdr *, struct nl_parser_param *), struct nl_object **result, int *syserror)
Pickup netlink answer, parse is and return object with preserving system error.
uint32_t nla_get_u32(const struct nlattr *nla)
Return payload of 32 bit integer attribute.
int rtnl_link_get_kernel(struct nl_sock *sk, int ifindex, const char *name, struct rtnl_link **result)
Get a link object directly from kernel.
int rtnl_link_build_get_request(int ifindex, const char *name, struct nl_msg **result)
Construct RTM_GETLINK netlink message.
int rtnl_link_build_add_request(struct rtnl_link *link, int flags, struct nl_msg **result)
Build a netlink message requesting the addition of new virtual link.
int rtnl_link_build_delete_request(const struct rtnl_link *link, struct nl_msg **result)
Build a netlink message requesting the deletion of a link.
int nlmsg_parse(struct nlmsghdr *nlh, int hdrlen, struct nlattr *tb[], int maxtype, struct nla_policy *policy)
parse attributes of a netlink message
struct nl_data * nl_data_alloc_attr(const struct nlattr *nla)
Allocate abstract data object based on netlink attribute.
void rtnl_link_set_carrier(struct rtnl_link *link, uint8_t status)
Set carrier of link object.
void rtnl_link_set_broadcast(struct rtnl_link *link, struct nl_addr *addr)
Set link layer broadcast address of link object.
struct nl_addr * nl_addr_get(struct nl_addr *addr)
Increase the reference counter of an abstract address.
void nl_addr_set_family(struct nl_addr *addr, int family)
Set address family.
struct nl_addr * nl_addr_alloc_attr(const struct nlattr *nla, int family)
Allocate abstract address based on Netlink attribute.
int rtnl_link_set_stat(struct rtnl_link *link, rtnl_link_stat_id_t id, const uint64_t value)
Set value of link statistics counter.
struct rtnl_link_af_ops * rtnl_link_af_ops_lookup(const unsigned int family)
Return operations of a specific link address family.
#define NLA_PUT_U8(msg, attrtype, value)
Add 8 bit integer attribute to netlink message.
uint64_t rtnl_link_get_stat(struct rtnl_link *link, rtnl_link_stat_id_t id)
Return value of link statistics counter.
NUL terminated character string.
Dump all attributes but no statistics.
char * rtnl_link_get_name(struct rtnl_link *link)
Return name of link object.
uint8_t rtnl_link_get_linkmode(struct rtnl_link *link)
Return link mode of link object.
uint32_t rtnl_link_get_num_tx_queues(struct rtnl_link *link)
Return number of TX queues.
int nl_addr_iszero(const struct nl_addr *addr)
Returns true if the address consists of all zeros.
void rtnl_link_set_num_tx_queues(struct rtnl_link *link, uint32_t nqueues)
Set number of TX queues.
struct nl_data * rtnl_link_get_phys_port_id(struct rtnl_link *link)
Return physical port id of link object.
struct nl_addr * rtnl_link_get_addr(struct rtnl_link *link)
Return link layer address of link object.
void rtnl_link_set_promiscuity(struct rtnl_link *link, uint32_t count)
Set link promiscuity count.
int rtnl_link_delete(struct nl_sock *sk, const struct rtnl_link *link)
Delete link.
unsigned int rtnl_link_get_flags(struct rtnl_link *link)
Return flags of link object.
uint8_t rtnl_link_get_operstate(struct rtnl_link *link)
Return operational status of link object.
int rtnl_link_get_num_vf(struct rtnl_link *link, uint32_t *num_vf)
Return number of PCI virtual functions of link object.
void nl_cache_free(struct nl_cache *cache)
Free a cache.
int nla_nest_end(struct nl_msg *msg, struct nlattr *start)
Finalize nesting of attributes.
int nl_cache_mngt_register(struct nl_cache_ops *ops)
Register a set of cache operations.
int rtnl_link_enslave(struct nl_sock *sock, struct rtnl_link *master, struct rtnl_link *slave)
Enslave slave link to master link.
unsigned int rtnl_link_get_weight(struct rtnl_link *link)
unsigned int rtnl_link_get_arptype(struct rtnl_link *link)
Get hardware type of link object.
int rtnl_link_get_master(struct rtnl_link *link)
Return master link of link object.
int nl_rtgen_request(struct nl_sock *sk, int type, int family, int flags)
Send routing netlink request message.
double nl_cancel_down_bytes(unsigned long long l, char **unit)
Cancel down a byte counter.
int nla_memcpy(void *dest, const struct nlattr *src, int count)
Copy attribute payload to another memory area.
uint8_t rtnl_link_get_carrier(struct rtnl_link *link)
Return carrier status of link object.
int nla_parse_nested(struct nlattr *tb[], int maxtype, struct nlattr *nla, struct nla_policy *policy)
Create attribute index based on nested attribute.
int nla_type(const struct nlattr *nla)
Return type of the attribute.
void rtnl_link_set_ifalias(struct rtnl_link *link, const char *alias)
Set alias name of link object (SNMP IfAlias)
void rtnl_link_set_addr(struct rtnl_link *link, struct nl_addr *addr)
Set link layer address of link object.
void rtnl_link_set_family(struct rtnl_link *link, int family)
Set address family of link object.
void rtnl_link_set_name(struct rtnl_link *link, const char *name)
Set name of link object.
void * nla_data(const struct nlattr *nla)
Return pointer to the payload section.
unsigned int rtnl_link_get_mtu(struct rtnl_link *link)
Return maximum transmission unit of link object.
int rtnl_link_set_type(struct rtnl_link *link, const char *type)
Set type of link object.
#define NLA_PUT_U32(msg, attrtype, value)
Add 32 bit integer attribute to netlink message.
void * rtnl_link_af_alloc(struct rtnl_link *link, const struct rtnl_link_af_ops *ops)
Allocate and return data buffer for link address family modules.
struct nl_data * nl_data_clone(const struct nl_data *src)
Clone an abstract data object.
int rtnl_link_get_family(struct rtnl_link *link)
Return address family of link object.
uint32_t rtnl_link_get_num_rx_queues(struct rtnl_link *link)
Return number of RX queues.
int rtnl_link_change(struct nl_sock *sk, struct rtnl_link *orig, struct rtnl_link *changes, int flags)
Change link.
int rtnl_link_af_data_compare(struct rtnl_link *a, struct rtnl_link *b, int family)
Compare af data for a link address family.
#define nla_for_each_nested(pos, nla, rem)
Iterate over a stream of nested attributes.
void rtnl_link_set_num_rx_queues(struct rtnl_link *link, uint32_t nqueues)
Set number of RX queues.
int rtnl_link_alloc_cache(struct nl_sock *sk, int family, struct nl_cache **result)
Allocate link cache and fill in all configured links.
void rtnl_link_set_linkmode(struct rtnl_link *link, uint8_t mode)
Set link mode of link object.
const char * rtnl_link_get_ifalias(struct rtnl_link *link)
Return alias name of link object (SNMP IfAlias)
int nlmsg_append(struct nl_msg *n, void *data, size_t len, int pad)
Append data to tail of a netlink message.
int nl_cache_refill(struct nl_sock *sk, struct nl_cache *cache)
(Re)fill a cache with the contents in the kernel.
void nl_object_put(struct nl_object *obj)
Release a reference from an object.
#define NLA_PUT_STRING(msg, attrtype, value)
Add string attribute to netlink message.
int rtnl_link_release(struct nl_sock *sock, struct rtnl_link *slave)
Release slave link from its master.
void nl_addr_put(struct nl_addr *addr)
Decrease the reference counter of an abstract address.
uint16_t type
Type of attribute or NLA_UNSPEC.
unsigned int rtnl_link_get_txqlen(struct rtnl_link *link)
Return transmission queue length.
struct nl_msg * nlmsg_alloc_simple(int nlmsgtype, int flags)
Allocate a new netlink message.
char * rtnl_link_i2name(struct nl_cache *cache, int ifindex, char *dst, size_t len)
Translate interface index to corresponding link name.
int rtnl_link_get_ifindex(struct rtnl_link *link)
Return interface index of link object.
uint32_t rtnl_link_get_promiscuity(struct rtnl_link *link)
Return link promiscuity count.
void rtnl_link_set_flags(struct rtnl_link *link, unsigned int flags)
Set flags of link object.
void rtnl_link_set_mtu(struct rtnl_link *link, unsigned int mtu)
Set Maximum Transmission Unit of link object.
void rtnl_link_set_qdisc(struct rtnl_link *link, const char *name)
Set queueing discipline name of link object.
void nl_dump(struct nl_dump_params *params, const char *fmt,...)
Dump a formatted character string.
void rtnl_link_set_weight(struct rtnl_link *link, unsigned int weight)
char * rtnl_link_get_type(struct rtnl_link *link)
Return type of link.
void rtnl_link_put(struct rtnl_link *link)
Return a link object reference.
void rtnl_link_af_ops_put(struct rtnl_link_af_ops *ops)
Give back reference to a set of operations.
int rtnl_link_name2i(struct nl_cache *cache, const char *name)
Translate link name to corresponding interface index.
struct nl_addr * rtnl_link_get_broadcast(struct rtnl_link *link)
Return link layer broadcast address of link object.
void rtnl_link_set_txqlen(struct rtnl_link *link, unsigned int txqlen)
Set transmission queue length.
int rtnl_link_build_change_request(struct rtnl_link *orig, struct rtnl_link *changes, int flags, struct nl_msg **result)
Build a netlink message requesting the modification of link.
int nl_send_auto(struct nl_sock *sk, struct nl_msg *msg)
Finalize and transmit Netlink message.
char * rtnl_link_get_info_type(struct rtnl_link *link)
void rtnl_link_set_operstate(struct rtnl_link *link, uint8_t status)
Set operational status of link object.
int rtnl_link_add(struct nl_sock *sk, struct rtnl_link *link, int flags)
Add virtual link.
void rtnl_link_set_group(struct rtnl_link *link, uint32_t group)
Set the group identifier of a link object.
Dump all attributes including statistics.
int rtnl_link_release_ifindex(struct nl_sock *sock, int slave)
Release slave link from its master.
void rtnl_link_info_ops_put(struct rtnl_link_info_ops *ops)
Give back reference to a set of operations.
size_t nla_strlcpy(char *dst, const struct nlattr *nla, size_t dstsize)
Copy string attribute payload to a buffer.
struct nl_cache * nl_cache_alloc(struct nl_cache_ops *ops)
Allocate new cache.
int rtnl_link_enslave_ifindex(struct nl_sock *sock, int master, int slave)
Enslave slave link to master link.
struct rtnl_link_info_ops * rtnl_link_info_ops_lookup(const char *name)
Return operations of a specific link info type.
struct nlattr * nla_nest_start(struct nl_msg *msg, int attrtype)
Start a new level of nested attributes.
void nl_data_free(struct nl_data *data)
Free an abstract data object.
char * nl_addr2str(const struct nl_addr *addr, char *buf, size_t size)
Convert abstract address object to character string.