109 #include <netlink-local.h>
110 #include <netlink/netlink.h>
111 #include <netlink/route/rtnl.h>
112 #include <netlink/route/addr.h>
113 #include <netlink/route/route.h>
114 #include <netlink/route/link.h>
115 #include <netlink/utils.h>
118 #define ADDR_ATTR_FAMILY 0x0001
119 #define ADDR_ATTR_PREFIXLEN 0x0002
120 #define ADDR_ATTR_FLAGS 0x0004
121 #define ADDR_ATTR_SCOPE 0x0008
122 #define ADDR_ATTR_IFINDEX 0x0010
123 #define ADDR_ATTR_LABEL 0x0020
124 #define ADDR_ATTR_CACHEINFO 0x0040
125 #define ADDR_ATTR_PEER 0x0080
126 #define ADDR_ATTR_LOCAL 0x0100
127 #define ADDR_ATTR_BROADCAST 0x0200
128 #define ADDR_ATTR_MULTICAST 0x0400
129 #define ADDR_ATTR_ANYCAST 0x0800
135 static void addr_constructor(
struct nl_object *obj)
137 struct rtnl_addr *addr = nl_object_priv(obj);
139 addr->a_scope = RT_SCOPE_NOWHERE;
142 static void addr_free_data(
struct nl_object *obj)
144 struct rtnl_addr *addr = nl_object_priv(obj);
149 nl_addr_put(addr->a_peer);
150 nl_addr_put(addr->a_local);
151 nl_addr_put(addr->a_bcast);
152 nl_addr_put(addr->a_multicast);
153 nl_addr_put(addr->a_anycast);
159 struct rtnl_addr *dst = nl_object_priv(_dst);
160 struct rtnl_addr *src = nl_object_priv(_src);
164 dst->a_link = src->a_link;
179 if (src->a_multicast)
190 static struct nla_policy addr_policy[IFA_MAX+1] = {
192 .maxlen = IFNAMSIZ },
193 [IFA_CACHEINFO] = { .minlen =
sizeof(
struct ifa_cacheinfo) },
196 static int addr_msg_parser(
struct nl_cache_ops *ops,
struct sockaddr_nl *who,
199 struct rtnl_addr *addr;
200 struct ifaddrmsg *ifa;
201 struct nlattr *tb[IFA_MAX+1];
202 int err, peer_prefix = 0, family;
203 struct nl_cache *link_cache;
205 addr = rtnl_addr_alloc();
209 addr->ce_msgtype = nlh->nlmsg_type;
211 err =
nlmsg_parse(nlh,
sizeof(*ifa), tb, IFA_MAX, addr_policy);
216 addr->a_family = family = ifa->ifa_family;
217 addr->a_prefixlen = ifa->ifa_prefixlen;
218 addr->a_flags = ifa->ifa_flags;
219 addr->a_scope = ifa->ifa_scope;
220 addr->a_ifindex = ifa->ifa_index;
222 addr->ce_mask = (ADDR_ATTR_FAMILY | ADDR_ATTR_PREFIXLEN |
223 ADDR_ATTR_FLAGS | ADDR_ATTR_SCOPE | ADDR_ATTR_IFINDEX);
226 nla_strlcpy(addr->a_label, tb[IFA_LABEL], IFNAMSIZ);
227 addr->ce_mask |= ADDR_ATTR_LABEL;
230 if (tb[IFA_CACHEINFO]) {
231 struct ifa_cacheinfo *ca;
234 addr->a_cacheinfo.aci_prefered = ca->ifa_prefered;
235 addr->a_cacheinfo.aci_valid = ca->ifa_valid;
236 addr->a_cacheinfo.aci_cstamp = ca->cstamp;
237 addr->a_cacheinfo.aci_tstamp = ca->tstamp;
238 addr->ce_mask |= ADDR_ATTR_CACHEINFO;
245 addr->ce_mask |= ADDR_ATTR_LOCAL;
248 if (tb[IFA_ADDRESS]) {
258 if (!tb[IFA_LOCAL] || !
nl_addr_cmp(a, addr->a_local)) {
259 nl_addr_put(addr->a_local);
261 addr->ce_mask |= ADDR_ATTR_LOCAL;
264 addr->ce_mask |= ADDR_ATTR_PEER;
269 nl_addr_set_prefixlen(peer_prefix ? addr->a_peer : addr->a_local,
272 if (tb[IFA_BROADCAST]) {
277 addr->ce_mask |= ADDR_ATTR_BROADCAST;
280 if (tb[IFA_MULTICAST]) {
283 if (!addr->a_multicast)
286 addr->ce_mask |= ADDR_ATTR_MULTICAST;
289 if (tb[IFA_ANYCAST]) {
292 if (!addr->a_anycast)
295 addr->ce_mask |= ADDR_ATTR_ANYCAST;
298 if ((link_cache = __nl_cache_mngt_require(
"route/link"))) {
302 rtnl_addr_set_link(addr, link);
320 static int addr_request_update(
struct nl_cache *cache,
struct nl_sock *sk)
327 struct rtnl_addr *addr = (
struct rtnl_addr *) obj;
328 struct nl_cache *link_cache;
333 if (addr->ce_mask & ADDR_ATTR_LOCAL)
334 nl_dump_line(p,
"%s",
337 nl_dump_line(p,
"none");
339 if (addr->ce_mask & ADDR_ATTR_PEER)
343 nl_dump(p,
" %s ", nl_af2str(addr->a_family, buf,
sizeof(buf)));
350 nl_dump(p,
"dev %d ", addr->a_ifindex);
353 rtnl_scope2str(addr->a_scope, buf,
sizeof(buf)));
355 rtnl_addr_flags2str(addr->a_flags, buf,
sizeof(buf));
364 struct rtnl_addr *addr = (
struct rtnl_addr *) obj;
367 addr_dump_line(obj, p);
369 if (addr->ce_mask & (ADDR_ATTR_LABEL | ADDR_ATTR_BROADCAST |
370 ADDR_ATTR_MULTICAST)) {
371 nl_dump_line(p,
" ");
373 if (addr->ce_mask & ADDR_ATTR_LABEL)
374 nl_dump(p,
" label %s", addr->a_label);
376 if (addr->ce_mask & ADDR_ATTR_BROADCAST)
380 if (addr->ce_mask & ADDR_ATTR_MULTICAST)
385 if (addr->ce_mask & ADDR_ATTR_ANYCAST)
393 if (addr->ce_mask & ADDR_ATTR_CACHEINFO) {
394 struct rtnl_addr_cacheinfo *ci = &addr->a_cacheinfo;
396 nl_dump_line(p,
" valid-lifetime %s",
397 ci->aci_valid == 0xFFFFFFFFU ?
"forever" :
401 nl_dump(p,
" preferred-lifetime %s\n",
402 ci->aci_prefered == 0xFFFFFFFFU ?
"forever" :
406 nl_dump_line(p,
" created boot-time+%s ",
410 nl_dump(p,
"last-updated boot-time+%s\n",
418 addr_dump_details(obj, p);
422 uint32_t attrs,
int flags)
424 struct rtnl_addr *a = (
struct rtnl_addr *) _a;
425 struct rtnl_addr *b = (
struct rtnl_addr *) _b;
428 #define ADDR_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, ADDR_ATTR_##ATTR, a, b, EXPR)
430 diff |= ADDR_DIFF(IFINDEX, a->a_ifindex != b->a_ifindex);
431 diff |= ADDR_DIFF(FAMILY, a->a_family != b->a_family);
432 diff |= ADDR_DIFF(SCOPE, a->a_scope != b->a_scope);
433 diff |= ADDR_DIFF(LABEL, strcmp(a->a_label, b->a_label));
434 diff |= ADDR_DIFF(PEER,
nl_addr_cmp(a->a_peer, b->a_peer));
435 diff |= ADDR_DIFF(LOCAL,
nl_addr_cmp(a->a_local, b->a_local));
436 diff |= ADDR_DIFF(MULTICAST,
nl_addr_cmp(a->a_multicast,
438 diff |= ADDR_DIFF(BROADCAST,
nl_addr_cmp(a->a_bcast, b->a_bcast));
439 diff |= ADDR_DIFF(ANYCAST,
nl_addr_cmp(a->a_anycast, b->a_anycast));
441 if (flags & LOOSE_COMPARISON)
442 diff |= ADDR_DIFF(FLAGS,
443 (a->a_flags ^ b->a_flags) & b->a_flag_mask);
445 diff |= ADDR_DIFF(FLAGS, a->a_flags != b->a_flags);
452 static const struct trans_tbl addr_attrs[] = {
453 __ADD(ADDR_ATTR_FAMILY, family)
454 __ADD(ADDR_ATTR_PREFIXLEN, prefixlen)
455 __ADD(ADDR_ATTR_FLAGS, flags)
456 __ADD(ADDR_ATTR_SCOPE, scope)
457 __ADD(ADDR_ATTR_IFINDEX, ifindex)
458 __ADD(ADDR_ATTR_LABEL, label)
459 __ADD(ADDR_ATTR_CACHEINFO, cacheinfo)
460 __ADD(ADDR_ATTR_PEER, peer)
461 __ADD(ADDR_ATTR_LOCAL, local)
462 __ADD(ADDR_ATTR_BROADCAST, broadcast)
463 __ADD(ADDR_ATTR_MULTICAST, multicast)
466 static
char *addr_attrs2str(
int attrs,
char *buf,
size_t len)
468 return __flags2str(attrs, buf, len, addr_attrs,
469 ARRAY_SIZE(addr_attrs));
477 struct rtnl_addr *rtnl_addr_alloc(
void)
482 void rtnl_addr_put(
struct rtnl_addr *addr)
494 int rtnl_addr_alloc_cache(
struct nl_sock *sk,
struct nl_cache **result)
514 struct nl_addr *addr)
518 if (cache->c_ops != &rtnl_addr_ops)
521 nl_list_for_each_entry(a, &cache->c_items, ce_list) {
522 if (ifindex && a->a_ifindex != ifindex)
525 if (a->ce_mask & ADDR_ATTR_LOCAL &&
537 static int build_addr_msg(
struct rtnl_addr *tmpl,
int cmd,
int flags,
538 struct nl_msg **result)
541 struct ifaddrmsg am = {
542 .ifa_family = tmpl->a_family,
543 .ifa_index = tmpl->a_ifindex,
544 .ifa_prefixlen = tmpl->a_prefixlen,
547 if (tmpl->ce_mask & ADDR_ATTR_SCOPE)
548 am.ifa_scope = tmpl->a_scope;
551 if (tmpl->a_family == AF_INET &&
552 tmpl->ce_mask & ADDR_ATTR_LOCAL &&
554 am.ifa_scope = RT_SCOPE_HOST;
556 am.ifa_scope = RT_SCOPE_UNIVERSE;
563 if (
nlmsg_append(msg, &am,
sizeof(am), NLMSG_ALIGNTO) < 0)
564 goto nla_put_failure;
566 if (tmpl->ce_mask & ADDR_ATTR_LOCAL)
569 if (tmpl->ce_mask & ADDR_ATTR_PEER)
571 else if (tmpl->ce_mask & ADDR_ATTR_LOCAL)
574 if (tmpl->ce_mask & ADDR_ATTR_LABEL)
577 if (tmpl->ce_mask & ADDR_ATTR_BROADCAST)
580 if (tmpl->ce_mask & ADDR_ATTR_CACHEINFO) {
581 struct ifa_cacheinfo ca = {
582 .ifa_valid = tmpl->a_cacheinfo.aci_valid,
583 .ifa_prefered = tmpl->a_cacheinfo.aci_prefered,
586 NLA_PUT(msg, IFA_CACHEINFO,
sizeof(ca), &ca);
626 struct nl_msg **result)
628 int required = ADDR_ATTR_IFINDEX | ADDR_ATTR_FAMILY |
629 ADDR_ATTR_PREFIXLEN | ADDR_ATTR_LOCAL;
631 if ((addr->ce_mask & required) != required)
632 return -NLE_MISSING_ATTR;
634 return build_addr_msg(addr, RTM_NEWADDR, NLM_F_CREATE | flags, result);
659 err = nl_send_auto_complete(sk, msg);
664 return wait_for_ack(sk);
699 struct nl_msg **result)
701 int required = ADDR_ATTR_IFINDEX | ADDR_ATTR_FAMILY;
703 if ((addr->ce_mask & required) != required)
704 return -NLE_MISSING_ATTR;
706 return build_addr_msg(addr, RTM_DELADDR, flags, result);
731 err = nl_send_auto_complete(sk, msg);
736 return wait_for_ack(sk);
746 int rtnl_addr_set_label(
struct rtnl_addr *addr,
const char *label)
748 if (strlen(label) >
sizeof(addr->a_label) - 1)
751 strcpy(addr->a_label, label);
752 addr->ce_mask |= ADDR_ATTR_LABEL;
757 char *rtnl_addr_get_label(
struct rtnl_addr *addr)
759 if (addr->ce_mask & ADDR_ATTR_LABEL)
760 return addr->a_label;
765 void rtnl_addr_set_ifindex(
struct rtnl_addr *addr,
int ifindex)
767 addr->a_ifindex = ifindex;
768 addr->ce_mask |= ADDR_ATTR_IFINDEX;
771 int rtnl_addr_get_ifindex(
struct rtnl_addr *addr)
773 return addr->a_ifindex;
776 void rtnl_addr_set_link(
struct rtnl_addr *addr,
struct rtnl_link *link)
785 addr->a_ifindex = link->l_index;
786 addr->ce_mask |= ADDR_ATTR_IFINDEX;
789 struct rtnl_link *rtnl_addr_get_link(
struct rtnl_addr *addr)
799 void rtnl_addr_set_family(
struct rtnl_addr *addr,
int family)
801 addr->a_family = family;
802 addr->ce_mask |= ADDR_ATTR_FAMILY;
805 int rtnl_addr_get_family(
struct rtnl_addr *addr)
807 return addr->a_family;
810 void rtnl_addr_set_prefixlen(
struct rtnl_addr *addr,
int prefix)
812 addr->a_prefixlen = prefix;
813 addr->ce_mask |= ADDR_ATTR_PREFIXLEN;
816 int rtnl_addr_get_prefixlen(
struct rtnl_addr *addr)
818 return addr->a_prefixlen;
821 void rtnl_addr_set_scope(
struct rtnl_addr *addr,
int scope)
823 addr->a_scope = scope;
824 addr->ce_mask |= ADDR_ATTR_SCOPE;
827 int rtnl_addr_get_scope(
struct rtnl_addr *addr)
829 return addr->a_scope;
832 void rtnl_addr_set_flags(
struct rtnl_addr *addr,
unsigned int flags)
834 addr->a_flag_mask |= flags;
835 addr->a_flags |= flags;
836 addr->ce_mask |= ADDR_ATTR_FLAGS;
839 void rtnl_addr_unset_flags(
struct rtnl_addr *addr,
unsigned int flags)
841 addr->a_flag_mask |= flags;
842 addr->a_flags &= ~flags;
843 addr->ce_mask |= ADDR_ATTR_FLAGS;
846 unsigned int rtnl_addr_get_flags(
struct rtnl_addr *addr)
848 return addr->a_flags;
851 static inline int __assign_addr(
struct rtnl_addr *addr,
struct nl_addr **pos,
852 struct nl_addr *
new,
int flag)
854 if (addr->ce_mask & ADDR_ATTR_FAMILY) {
855 if (new->a_family != addr->a_family)
856 return -NLE_AF_MISMATCH;
858 addr->a_family =
new->a_family;
863 *pos = nl_addr_get(
new);
864 addr->ce_mask |= (flag | ADDR_ATTR_FAMILY);
869 int rtnl_addr_set_local(
struct rtnl_addr *addr,
struct nl_addr *local)
873 err = __assign_addr(addr, &addr->a_local, local, ADDR_ATTR_LOCAL);
877 if (!(addr->ce_mask & ADDR_ATTR_PEER)) {
879 addr->ce_mask |= ADDR_ATTR_PREFIXLEN;
885 struct nl_addr *rtnl_addr_get_local(
struct rtnl_addr *addr)
887 return addr->a_local;
890 int rtnl_addr_set_peer(
struct rtnl_addr *addr,
struct nl_addr *peer)
892 return __assign_addr(addr, &addr->a_peer, peer, ADDR_ATTR_PEER);
895 addr->ce_mask |= ADDR_ATTR_PREFIXLEN;
900 struct nl_addr *rtnl_addr_get_peer(
struct rtnl_addr *addr)
905 int rtnl_addr_set_broadcast(
struct rtnl_addr *addr,
struct nl_addr *bcast)
907 return __assign_addr(addr, &addr->a_bcast, bcast, ADDR_ATTR_BROADCAST);
910 struct nl_addr *rtnl_addr_get_broadcast(
struct rtnl_addr *addr)
912 return addr->a_bcast;
915 int rtnl_addr_set_multicast(
struct rtnl_addr *addr,
struct nl_addr *multicast)
917 return __assign_addr(addr, &addr->a_multicast, multicast,
918 ADDR_ATTR_MULTICAST);
921 struct nl_addr *rtnl_addr_get_multicast(
struct rtnl_addr *addr)
923 return addr->a_multicast;
926 int rtnl_addr_set_anycast(
struct rtnl_addr *addr,
struct nl_addr *anycast)
928 return __assign_addr(addr, &addr->a_anycast, anycast,
932 struct nl_addr *rtnl_addr_get_anycast(
struct rtnl_addr *addr)
934 return addr->a_anycast;
937 uint32_t rtnl_addr_get_valid_lifetime(
struct rtnl_addr *addr)
939 if (addr->ce_mask & ADDR_ATTR_CACHEINFO)
940 return addr->a_cacheinfo.aci_valid;
945 void rtnl_addr_set_valid_lifetime(
struct rtnl_addr *addr, uint32_t lifetime)
947 addr->a_cacheinfo.aci_valid = lifetime;
948 addr->ce_mask |= ADDR_ATTR_CACHEINFO;
951 uint32_t rtnl_addr_get_preferred_lifetime(
struct rtnl_addr *addr)
953 if (addr->ce_mask & ADDR_ATTR_CACHEINFO)
954 return addr->a_cacheinfo.aci_prefered;
959 void rtnl_addr_set_preferred_lifetime(
struct rtnl_addr *addr, uint32_t lifetime)
961 addr->a_cacheinfo.aci_prefered = lifetime;
962 addr->ce_mask |= ADDR_ATTR_CACHEINFO;
965 uint32_t rtnl_addr_get_create_time(
struct rtnl_addr *addr)
967 return addr->a_cacheinfo.aci_cstamp;
970 uint32_t rtnl_addr_get_last_update_time(
struct rtnl_addr *addr)
972 return addr->a_cacheinfo.aci_tstamp;
982 static const struct trans_tbl addr_flags[] = {
983 __ADD(IFA_F_SECONDARY, secondary)
984 __ADD(IFA_F_NODAD, nodad)
985 __ADD(IFA_F_OPTIMISTIC, optimistic)
986 __ADD(IFA_F_HOMEADDRESS, homeaddress)
987 __ADD(IFA_F_DEPRECATED, deprecated)
988 __ADD(IFA_F_TENTATIVE, tentative)
989 __ADD(IFA_F_PERMANENT, permanent)
992 char *rtnl_addr_flags2str(
int flags,
char *buf,
size_t size)
994 return __flags2str(flags, buf, size, addr_flags,
995 ARRAY_SIZE(addr_flags));
998 int rtnl_addr_str2flags(
const char *name)
1000 return __str2flags(name, addr_flags, ARRAY_SIZE(addr_flags));
1007 .oo_size =
sizeof(
struct rtnl_addr),
1008 .oo_constructor = addr_constructor,
1009 .oo_free_data = addr_free_data,
1010 .oo_clone = addr_clone,
1016 .oo_compare = addr_compare,
1017 .oo_attrs2str = addr_attrs2str,
1018 .oo_id_attrs = (ADDR_ATTR_FAMILY | ADDR_ATTR_IFINDEX |
1019 ADDR_ATTR_LOCAL | ADDR_ATTR_PREFIXLEN),
1023 { AF_INET, RTNLGRP_IPV4_IFADDR },
1024 { AF_INET6, RTNLGRP_IPV6_IFADDR },
1025 { END_OF_GROUP_LIST },
1030 .co_hdrsize =
sizeof(
struct ifaddrmsg),
1032 { RTM_NEWADDR, NL_ACT_NEW,
"new" },
1033 { RTM_DELADDR, NL_ACT_DEL,
"del" },
1034 { RTM_GETADDR, NL_ACT_GET,
"get" },
1035 END_OF_MSGTYPES_LIST,
1037 .co_protocol = NETLINK_ROUTE,
1038 .co_groups = addr_groups,
1039 .co_request_update = addr_request_update,
1040 .co_msg_parser = addr_msg_parser,
1041 .co_obj_ops = &addr_obj_ops,
1044 static void __init addr_init(
void)
1049 static void __exit addr_exit(
void)