152 #include <netlink-private/netlink.h> 153 #include <netlink/netlink.h> 154 #include <netlink/utils.h> 155 #include <netlink/hashtable.h> 156 #include <netlink/route/rtnl.h> 157 #include <netlink/route/neighbour.h> 158 #include <netlink/route/link.h> 159 #include <netlink/hashtable.h> 162 #define NEIGH_ATTR_FLAGS 0x01 163 #define NEIGH_ATTR_STATE 0x02 164 #define NEIGH_ATTR_LLADDR 0x04 165 #define NEIGH_ATTR_DST 0x08 166 #define NEIGH_ATTR_CACHEINFO 0x10 167 #define NEIGH_ATTR_IFINDEX 0x20 168 #define NEIGH_ATTR_FAMILY 0x40 169 #define NEIGH_ATTR_TYPE 0x80 170 #define NEIGH_ATTR_PROBES 0x100 171 #define NEIGH_ATTR_MASTER 0x200 172 #define NEIGH_ATTR_VLAN 0x400 174 static struct nl_cache_ops rtnl_neigh_ops;
175 static struct nl_object_ops neigh_obj_ops;
178 static void neigh_free_data(
struct nl_object *c)
180 struct rtnl_neigh *neigh = nl_object_priv(c);
189 static int neigh_clone(
struct nl_object *_dst,
struct nl_object *_src)
191 struct rtnl_neigh *dst = nl_object_priv(_dst);
192 struct rtnl_neigh *src = nl_object_priv(_src);
205 static void neigh_keygen(
struct nl_object *obj, uint32_t *hashkey,
208 struct rtnl_neigh *neigh = (
struct rtnl_neigh *) obj;
209 unsigned int nkey_sz;
210 struct nl_addr *addr = NULL;
211 struct neigh_hash_key {
216 } __attribute__((packed)) *nkey;
218 char buf[INET6_ADDRSTRLEN+5];
221 if (neigh->n_family == AF_BRIDGE) {
223 addr = neigh->n_lladdr;
224 }
else if (neigh->n_dst) {
228 nkey_sz =
sizeof(*nkey);
232 nkey = calloc(1, nkey_sz);
237 nkey->n_family = neigh->n_family;
238 if (neigh->n_family == AF_BRIDGE) {
239 nkey->n_vlan = neigh->n_vlan;
240 if (neigh->n_flags & NTF_SELF)
241 nkey->n_ifindex = neigh->n_ifindex;
243 nkey->n_ifindex = neigh->n_master;
245 nkey->n_ifindex = neigh->n_ifindex;
252 *hashkey = nl_hash(nkey, nkey_sz, 0) % table_sz;
254 NL_DBG(5,
"neigh %p key (fam %d dev %d addr %s) keysz %d hash 0x%x\n",
255 neigh, nkey->n_family, nkey->n_ifindex,
264 static uint64_t neigh_compare(
struct nl_object *_a,
struct nl_object *_b,
265 uint64_t attrs,
int flags)
267 struct rtnl_neigh *a = (
struct rtnl_neigh *) _a;
268 struct rtnl_neigh *b = (
struct rtnl_neigh *) _b;
271 #define NEIGH_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, NEIGH_ATTR_##ATTR, a, b, EXPR) 273 diff |= NEIGH_DIFF(IFINDEX, a->n_ifindex != b->n_ifindex);
274 diff |= NEIGH_DIFF(FAMILY, a->n_family != b->n_family);
275 diff |= NEIGH_DIFF(TYPE, a->n_type != b->n_type);
276 diff |= NEIGH_DIFF(LLADDR,
nl_addr_cmp(a->n_lladdr, b->n_lladdr));
277 diff |= NEIGH_DIFF(DST,
nl_addr_cmp(a->n_dst, b->n_dst));
278 diff |= NEIGH_DIFF(MASTER, a->n_master != b->n_master);
279 diff |= NEIGH_DIFF(VLAN, a->n_vlan != b->n_vlan);
281 if (flags & LOOSE_COMPARISON) {
282 diff |= NEIGH_DIFF(STATE,
283 (a->n_state ^ b->n_state) & b->n_state_mask);
284 diff |= NEIGH_DIFF(FLAGS,
285 (a->n_flags ^ b->n_flags) & b->n_flag_mask);
287 diff |= NEIGH_DIFF(STATE, a->n_state != b->n_state);
288 diff |= NEIGH_DIFF(FLAGS, a->n_flags != b->n_flags);
296 static const struct trans_tbl neigh_attrs[] = {
297 __ADD(NEIGH_ATTR_FLAGS, flags),
298 __ADD(NEIGH_ATTR_STATE, state),
299 __ADD(NEIGH_ATTR_LLADDR, lladdr),
300 __ADD(NEIGH_ATTR_DST, dst),
301 __ADD(NEIGH_ATTR_CACHEINFO, cacheinfo),
302 __ADD(NEIGH_ATTR_IFINDEX, ifindex),
303 __ADD(NEIGH_ATTR_FAMILY, family),
304 __ADD(NEIGH_ATTR_TYPE, type),
305 __ADD(NEIGH_ATTR_PROBES, probes),
306 __ADD(NEIGH_ATTR_MASTER, master),
307 __ADD(NEIGH_ATTR_VLAN, vlan),
310 static char *neigh_attrs2str(
int attrs,
char *buf,
size_t len)
312 return __flags2str(attrs, buf, len, neigh_attrs,
313 ARRAY_SIZE(neigh_attrs));
316 static uint32_t neigh_id_attrs_get(
struct nl_object *obj)
318 struct rtnl_neigh *neigh = (
struct rtnl_neigh *)obj;
320 if (neigh->n_family == AF_BRIDGE) {
321 if (neigh->n_flags & NTF_SELF)
322 return (NEIGH_ATTR_LLADDR | NEIGH_ATTR_FAMILY | NEIGH_ATTR_IFINDEX | NEIGH_ATTR_VLAN);
324 return (NEIGH_ATTR_LLADDR | NEIGH_ATTR_FAMILY | NEIGH_ATTR_MASTER | NEIGH_ATTR_VLAN);
326 return (NEIGH_ATTR_IFINDEX | NEIGH_ATTR_DST | NEIGH_ATTR_FAMILY);
329 static struct nla_policy neigh_policy[NDA_MAX+1] = {
330 [NDA_CACHEINFO] = { .
minlen =
sizeof(
struct nda_cacheinfo) },
331 [NDA_PROBES] = { .type =
NLA_U32 },
334 static int neigh_msg_parser(
struct nl_cache_ops *ops,
struct sockaddr_nl *who,
335 struct nlmsghdr *n,
struct nl_parser_param *pp)
337 struct rtnl_neigh *neigh;
340 if ((err = rtnl_neigh_parse(n, &neigh)) < 0)
343 err = pp->pp_cb((
struct nl_object *) neigh, pp);
345 rtnl_neigh_put(neigh);
350 int rtnl_neigh_parse(
struct nlmsghdr *n,
struct rtnl_neigh **result)
352 struct rtnl_neigh *neigh;
353 struct nlattr *tb[NDA_MAX + 1];
357 neigh = rtnl_neigh_alloc();
363 neigh->ce_msgtype = n->nlmsg_type;
366 err =
nlmsg_parse(n,
sizeof(*nm), tb, NDA_MAX, neigh_policy);
370 neigh->n_family = nm->ndm_family;
371 neigh->n_ifindex = nm->ndm_ifindex;
372 neigh->n_state = nm->ndm_state;
373 neigh->n_flags = nm->ndm_flags;
374 neigh->n_type = nm->ndm_type;
376 neigh->ce_mask |= (NEIGH_ATTR_FAMILY | NEIGH_ATTR_IFINDEX |
377 NEIGH_ATTR_STATE | NEIGH_ATTR_FLAGS |
380 if (tb[NDA_LLADDR]) {
382 if (!neigh->n_lladdr) {
388 neigh->ce_mask |= NEIGH_ATTR_LLADDR;
397 neigh->ce_mask |= NEIGH_ATTR_DST;
400 if (tb[NDA_CACHEINFO]) {
401 struct nda_cacheinfo *ci =
nla_data(tb[NDA_CACHEINFO]);
403 neigh->n_cacheinfo.nci_confirmed = ci->ndm_confirmed;
404 neigh->n_cacheinfo.nci_used = ci->ndm_used;
405 neigh->n_cacheinfo.nci_updated = ci->ndm_updated;
406 neigh->n_cacheinfo.nci_refcnt = ci->ndm_refcnt;
408 neigh->ce_mask |= NEIGH_ATTR_CACHEINFO;
411 if (tb[NDA_PROBES]) {
413 neigh->ce_mask |= NEIGH_ATTR_PROBES;
418 neigh->ce_mask |= NEIGH_ATTR_VLAN;
424 if (neigh->n_family == AF_BRIDGE) {
425 if (tb[NDA_MASTER]) {
427 neigh->ce_mask |= NEIGH_ATTR_MASTER;
434 neigh->n_master = link->l_master;
436 neigh->ce_mask |= NEIGH_ATTR_MASTER;
438 nl_cache_put(lcache);
447 rtnl_neigh_put(neigh);
451 static int neigh_request_update(
struct nl_cache *c,
struct nl_sock *h)
453 int family = c->c_iarg1;
459 static void neigh_dump_line(
struct nl_object *a,
struct nl_dump_params *p)
461 char dst[INET6_ADDRSTRLEN+5], lladdr[INET6_ADDRSTRLEN+5];
462 struct rtnl_neigh *n = (
struct rtnl_neigh *) a;
463 struct nl_cache *link_cache;
464 char state[128], flags[64];
468 if (n->n_family != AF_BRIDGE)
469 nl_dump_line(p,
"%s ",
nl_addr2str(n->n_dst, dst,
sizeof(dst)));
474 state,
sizeof(state)));
476 nl_dump(p,
"dev %d ", n->n_ifindex);
478 if (n->ce_mask & NEIGH_ATTR_LLADDR)
482 if (n->ce_mask & NEIGH_ATTR_VLAN)
483 nl_dump(p,
"vlan %d ", n->n_vlan);
485 rtnl_neigh_state2str(n->n_state, state,
sizeof(state));
486 rtnl_neigh_flags2str(n->n_flags, flags,
sizeof(flags));
491 nl_dump(p,
"%s%s", state[0] ?
"," :
"<", flags);
492 if (state[0] || flags[0])
497 nl_cache_put(link_cache);
500 static void neigh_dump_details(
struct nl_object *a,
struct nl_dump_params *p)
503 struct rtnl_neigh *n = (
struct rtnl_neigh *) a;
506 neigh_dump_line(a, p);
508 nl_dump_line(p,
" refcnt %u type %s confirmed %u used " 510 n->n_cacheinfo.nci_refcnt,
511 nl_rtntype2str(n->n_type, rtn_type,
sizeof(rtn_type)),
512 n->n_cacheinfo.nci_confirmed/hz,
513 n->n_cacheinfo.nci_used/hz, n->n_cacheinfo.nci_updated/hz);
516 static void neigh_dump_stats(
struct nl_object *a,
struct nl_dump_params *p)
518 neigh_dump_details(a, p);
526 struct rtnl_neigh *rtnl_neigh_alloc(
void)
531 void rtnl_neigh_put(
struct rtnl_neigh *neigh)
572 struct nl_cache * cache;
601 struct rtnl_neigh *neigh;
603 nl_list_for_each_entry(neigh, &cache->c_items, ce_list) {
604 if (neigh->n_ifindex == ifindex &&
624 struct nl_addr *lladdr,
int vlan)
626 struct rtnl_neigh *neigh;
628 nl_list_for_each_entry(neigh, &cache->c_items, ce_list) {
629 if (neigh->n_ifindex == ifindex &&
630 neigh->n_vlan == vlan &&
631 neigh->n_lladdr && !
nl_addr_cmp(neigh->n_lladdr, lladdr)) {
647 static int build_neigh_msg(
struct rtnl_neigh *tmpl,
int cmd,
int flags,
648 struct nl_msg **result)
651 struct ndmsg nhdr = {
652 .ndm_ifindex = tmpl->n_ifindex,
653 .ndm_state = NUD_PERMANENT,
656 if (tmpl->n_family != AF_BRIDGE) {
657 if (!(tmpl->ce_mask & NEIGH_ATTR_DST))
658 return -NLE_MISSING_ATTR;
662 nhdr.ndm_family = AF_BRIDGE;
664 if (tmpl->ce_mask & NEIGH_ATTR_FLAGS)
665 nhdr.ndm_flags = tmpl->n_flags;
667 if (tmpl->ce_mask & NEIGH_ATTR_STATE)
668 nhdr.ndm_state = tmpl->n_state;
674 if (
nlmsg_append(msg, &nhdr,
sizeof(nhdr), NLMSG_ALIGNTO) < 0)
675 goto nla_put_failure;
677 if (tmpl->n_family != AF_BRIDGE)
680 if (tmpl->ce_mask & NEIGH_ATTR_LLADDR)
683 if (tmpl->ce_mask & NEIGH_ATTR_VLAN)
715 struct nl_msg **result)
717 return build_neigh_msg(tmpl, RTM_NEWNEIGH, flags, result);
751 return wait_for_ack(sk);
776 struct nl_msg **result)
778 return build_neigh_msg(neigh, RTM_DELNEIGH, flags, result);
807 return wait_for_ack(sk);
817 static const struct trans_tbl neigh_states[] = {
818 __ADD(NUD_INCOMPLETE, incomplete),
819 __ADD(NUD_REACHABLE, reachable),
820 __ADD(NUD_STALE, stale),
821 __ADD(NUD_DELAY, delay),
822 __ADD(NUD_PROBE, probe),
823 __ADD(NUD_FAILED, failed),
824 __ADD(NUD_NOARP, noarp),
825 __ADD(NUD_PERMANENT, permanent),
830 __ADD(NUD_NOARP, norarp),
833 char * rtnl_neigh_state2str(
int state,
char *buf,
size_t len)
835 return __flags2str(state, buf, len, neigh_states,
836 ARRAY_SIZE(neigh_states) - 1);
839 int rtnl_neigh_str2state(
const char *name)
841 return __str2type(name, neigh_states, ARRAY_SIZE(neigh_states));
851 static const struct trans_tbl neigh_flags[] = {
853 __ADD(NTF_PROXY, proxy),
854 __ADD(NTF_ROUTER, router),
855 __ADD(NTF_SELF,
self),
858 char * rtnl_neigh_flags2str(
int flags,
char *buf,
size_t len)
860 return __flags2str(flags, buf, len, neigh_flags,
861 ARRAY_SIZE(neigh_flags));
864 int rtnl_neigh_str2flag(
const char *name)
866 return __str2type(name, neigh_flags, ARRAY_SIZE(neigh_flags));
876 void rtnl_neigh_set_state(
struct rtnl_neigh *neigh,
int state)
878 neigh->n_state_mask |= state;
879 neigh->n_state |= state;
880 neigh->ce_mask |= NEIGH_ATTR_STATE;
883 int rtnl_neigh_get_state(
struct rtnl_neigh *neigh)
885 if (neigh->ce_mask & NEIGH_ATTR_STATE)
886 return neigh->n_state;
891 void rtnl_neigh_unset_state(
struct rtnl_neigh *neigh,
int state)
893 neigh->n_state_mask |= state;
894 neigh->n_state &= ~state;
895 neigh->ce_mask |= NEIGH_ATTR_STATE;
898 void rtnl_neigh_set_flags(
struct rtnl_neigh *neigh,
unsigned int flags)
900 neigh->n_flag_mask |= flags;
901 neigh->n_flags |= flags;
902 neigh->ce_mask |= NEIGH_ATTR_FLAGS;
905 unsigned int rtnl_neigh_get_flags(
struct rtnl_neigh *neigh)
907 return neigh->n_flags;
910 void rtnl_neigh_unset_flags(
struct rtnl_neigh *neigh,
unsigned int flags)
912 neigh->n_flag_mask |= flags;
913 neigh->n_flags &= ~flags;
914 neigh->ce_mask |= NEIGH_ATTR_FLAGS;
917 void rtnl_neigh_set_ifindex(
struct rtnl_neigh *neigh,
int ifindex)
919 neigh->n_ifindex = ifindex;
920 neigh->ce_mask |= NEIGH_ATTR_IFINDEX;
923 int rtnl_neigh_get_ifindex(
struct rtnl_neigh *neigh)
925 return neigh->n_ifindex;
928 static inline int __assign_addr(
struct rtnl_neigh *neigh,
struct nl_addr **pos,
929 struct nl_addr *
new,
int flag,
int nocheck)
932 if (neigh->ce_mask & NEIGH_ATTR_FAMILY) {
933 if (new->a_family != neigh->n_family)
934 return -NLE_AF_MISMATCH;
936 neigh->n_family =
new->a_family;
937 neigh->ce_mask |= NEIGH_ATTR_FAMILY;
947 neigh->ce_mask |= flag;
952 void rtnl_neigh_set_lladdr(
struct rtnl_neigh *neigh,
struct nl_addr *addr)
954 __assign_addr(neigh, &neigh->n_lladdr, addr, NEIGH_ATTR_LLADDR, 1);
957 struct nl_addr *rtnl_neigh_get_lladdr(
struct rtnl_neigh *neigh)
959 if (neigh->ce_mask & NEIGH_ATTR_LLADDR)
960 return neigh->n_lladdr;
965 int rtnl_neigh_set_dst(
struct rtnl_neigh *neigh,
struct nl_addr *addr)
967 return __assign_addr(neigh, &neigh->n_dst, addr,
971 struct nl_addr *rtnl_neigh_get_dst(
struct rtnl_neigh *neigh)
973 if (neigh->ce_mask & NEIGH_ATTR_DST)
979 void rtnl_neigh_set_family(
struct rtnl_neigh *neigh,
int family)
981 neigh->n_family = family;
982 neigh->ce_mask |= NEIGH_ATTR_FAMILY;
985 int rtnl_neigh_get_family(
struct rtnl_neigh *neigh)
987 return neigh->n_family;
990 void rtnl_neigh_set_type(
struct rtnl_neigh *neigh,
int type)
992 neigh->n_type = type;
993 neigh->ce_mask = NEIGH_ATTR_TYPE;
996 int rtnl_neigh_get_type(
struct rtnl_neigh *neigh)
998 if (neigh->ce_mask & NEIGH_ATTR_TYPE)
999 return neigh->n_type;
1004 void rtnl_neigh_set_vlan(
struct rtnl_neigh *neigh,
int vlan)
1006 neigh->n_vlan = vlan;
1007 neigh->ce_mask |= NEIGH_ATTR_VLAN;
1010 int rtnl_neigh_get_vlan(
struct rtnl_neigh *neigh)
1012 if (neigh->ce_mask & NEIGH_ATTR_VLAN)
1013 return neigh->n_vlan;
1020 static struct nl_object_ops neigh_obj_ops = {
1021 .oo_name =
"route/neigh",
1022 .oo_size =
sizeof(
struct rtnl_neigh),
1023 .oo_free_data = neigh_free_data,
1024 .oo_clone = neigh_clone,
1030 .oo_compare = neigh_compare,
1031 .oo_keygen = neigh_keygen,
1032 .oo_attrs2str = neigh_attrs2str,
1033 .oo_id_attrs = (NEIGH_ATTR_IFINDEX | NEIGH_ATTR_DST | NEIGH_ATTR_FAMILY),
1034 .oo_id_attrs_get = neigh_id_attrs_get
1037 static struct nl_af_group neigh_groups[] = {
1038 { AF_UNSPEC, RTNLGRP_NEIGH },
1039 { AF_BRIDGE, RTNLGRP_NEIGH },
1040 { END_OF_GROUP_LIST },
1043 static struct nl_cache_ops rtnl_neigh_ops = {
1044 .co_name =
"route/neigh",
1045 .co_hdrsize =
sizeof(
struct ndmsg),
1047 { RTM_NEWNEIGH, NL_ACT_NEW,
"new" },
1048 { RTM_DELNEIGH, NL_ACT_DEL,
"del" },
1049 { RTM_GETNEIGH, NL_ACT_GET,
"get" },
1050 END_OF_MSGTYPES_LIST,
1052 .co_protocol = NETLINK_ROUTE,
1053 .co_groups = neigh_groups,
1054 .co_request_update = neigh_request_update,
1055 .co_msg_parser = neigh_msg_parser,
1056 .co_obj_ops = &neigh_obj_ops,
1059 static void __init neigh_init(
void)
1064 static void __exit neigh_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.
int nl_get_user_hz(void)
Return the value of HZ.
void nlmsg_free(struct nl_msg *msg)
Release a reference from an netlink message.
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.
int rtnl_neigh_delete(struct nl_sock *sk, struct rtnl_neigh *neigh, int flags)
Delete a neighbour.
void * nlmsg_data(const struct nlmsghdr *nlh)
Return pointer to message payload.
#define NLA_PUT_ADDR(msg, attrtype, addr)
Add address attribute to netlink message.
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.
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 rtnl_neigh_alloc_cache_flags(struct nl_sock *sock, struct nl_cache **result, unsigned int flags)
Build a neighbour cache including all neighbours currently configured in the kernel.
struct rtnl_neigh * rtnl_neigh_get_by_vlan(struct nl_cache *cache, int ifindex, struct nl_addr *lladdr, int vlan)
Look up a neighbour by interface index, link layer address and vlan id.
uint32_t nla_get_u32(const struct nlattr *nla)
Return payload of 32 bit integer attribute.
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_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_neigh_add(struct nl_sock *sk, struct rtnl_neigh *tmpl, int flags)
Add a new neighbour.
Dump all attributes but no statistics.
void nl_cache_free(struct nl_cache *cache)
Free a cache.
int nl_cache_mngt_register(struct nl_cache_ops *ops)
Register a set of cache operations.
struct rtnl_neigh * rtnl_neigh_get(struct nl_cache *cache, int ifindex, struct nl_addr *dst)
Look up a neighbour by interface index and destination address.
int rtnl_neigh_build_delete_request(struct rtnl_neigh *neigh, int flags, struct nl_msg **result)
Build a netlink request message to delete a neighbour.
int nl_rtgen_request(struct nl_sock *sk, int type, int family, int flags)
Send routing netlink request message.
void * nla_data(const struct nlattr *nla)
Return pointer to the payload section.
int rtnl_neigh_build_add_request(struct rtnl_neigh *tmpl, int flags, struct nl_msg **result)
Build netlink request message to add a new neighbour.
int rtnl_neigh_alloc_cache(struct nl_sock *sock, struct nl_cache **result)
Build a neighbour cache including all neighbours currently configured in the kernel.
uint16_t minlen
Minimal length of payload required.
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.
void nl_addr_put(struct nl_addr *addr)
Decrease the reference counter of an abstract address.
struct nl_msg * nlmsg_alloc_simple(int nlmsgtype, int flags)
Allocate a new netlink message.
uint16_t nla_get_u16(const struct nlattr *nla)
Return payload of 16 bit integer attribute.
char * rtnl_link_i2name(struct nl_cache *cache, int ifindex, char *dst, size_t len)
Translate interface index to corresponding link name.
#define NLA_PUT_U16(msg, attrtype, value)
Add 16 bit integer attribute to netlink message.
void nl_cache_set_flags(struct nl_cache *cache, unsigned int flags)
Set cache flags.
void nl_dump(struct nl_dump_params *params, const char *fmt,...)
Dump a formatted character string.
void rtnl_link_put(struct rtnl_link *link)
Return a link object reference.
unsigned int nl_addr_get_len(const struct nl_addr *addr)
Get length of binary address of abstract address object.
Dump all attributes including statistics.
void * nl_addr_get_binary_addr(const struct nl_addr *addr)
Get binary address of abstract address object.
int nl_cache_alloc_and_fill(struct nl_cache_ops *ops, struct nl_sock *sock, struct nl_cache **result)
Allocate new cache and fill it.
struct nl_cache * nl_cache_alloc(struct nl_cache_ops *ops)
Allocate new cache.
char * nl_addr2str(const struct nl_addr *addr, char *buf, size_t size)
Convert abstract address object to character string.
int nl_addr_get_family(const struct nl_addr *addr)
Return address family.