109 #include <netlink-private/netlink.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
131 static struct nl_cache_ops rtnl_addr_ops;
132 static struct nl_object_ops addr_obj_ops;
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);
157 static int addr_clone(
struct nl_object *_dst,
struct nl_object *_src)
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,
197 struct nlmsghdr *nlh,
struct nl_parser_param *pp)
199 struct rtnl_addr *addr;
200 struct ifaddrmsg *ifa;
201 struct nlattr *tb[IFA_MAX+1];
203 struct nl_cache *link_cache;
204 struct nl_addr *plen_addr = NULL;
206 addr = rtnl_addr_alloc();
210 addr->ce_msgtype = nlh->nlmsg_type;
212 err =
nlmsg_parse(nlh,
sizeof(*ifa), tb, IFA_MAX, addr_policy);
217 addr->a_family = family = ifa->ifa_family;
218 addr->a_prefixlen = ifa->ifa_prefixlen;
219 addr->a_flags = ifa->ifa_flags;
220 addr->a_scope = ifa->ifa_scope;
221 addr->a_ifindex = ifa->ifa_index;
223 addr->ce_mask = (ADDR_ATTR_FAMILY | ADDR_ATTR_PREFIXLEN |
224 ADDR_ATTR_FLAGS | ADDR_ATTR_SCOPE | ADDR_ATTR_IFINDEX);
227 nla_strlcpy(addr->a_label, tb[IFA_LABEL], IFNAMSIZ);
228 addr->ce_mask |= ADDR_ATTR_LABEL;
232 if (tb[IFA_CACHEINFO]) {
233 struct ifa_cacheinfo *ca;
236 addr->a_cacheinfo.aci_prefered = ca->ifa_prefered;
237 addr->a_cacheinfo.aci_valid = ca->ifa_valid;
238 addr->a_cacheinfo.aci_cstamp = ca->cstamp;
239 addr->a_cacheinfo.aci_tstamp = ca->tstamp;
240 addr->ce_mask |= ADDR_ATTR_CACHEINFO;
247 addr->ce_mask |= ADDR_ATTR_LOCAL;
248 plen_addr = addr->a_local;
251 if (tb[IFA_ADDRESS]) {
261 if (!tb[IFA_LOCAL] || !
nl_addr_cmp(a, addr->a_local)) {
264 addr->ce_mask |= ADDR_ATTR_LOCAL;
267 addr->ce_mask |= ADDR_ATTR_PEER;
277 if (tb[IFA_BROADCAST]) {
282 addr->ce_mask |= ADDR_ATTR_BROADCAST;
286 if (tb[IFA_MULTICAST]) {
289 if (!addr->a_multicast)
292 addr->ce_mask |= ADDR_ATTR_MULTICAST;
296 if (tb[IFA_ANYCAST]) {
299 if (!addr->a_anycast)
302 addr->ce_mask |= ADDR_ATTR_ANYCAST;
305 if ((link_cache = __nl_cache_mngt_require(
"route/link"))) {
309 rtnl_addr_set_link(addr, link);
316 err = pp->pp_cb((
struct nl_object *) addr, pp);
327 static int addr_request_update(
struct nl_cache *cache,
struct nl_sock *sk)
332 static void addr_dump_line(
struct nl_object *obj,
struct nl_dump_params *p)
334 struct rtnl_addr *addr = (
struct rtnl_addr *) obj;
335 struct nl_cache *link_cache;
340 if (addr->ce_mask & ADDR_ATTR_LOCAL)
341 nl_dump_line(p,
"%s",
344 nl_dump_line(p,
"none");
346 if (addr->ce_mask & ADDR_ATTR_PEER)
350 nl_dump(p,
" %s ", nl_af2str(addr->a_family, buf,
sizeof(buf)));
357 nl_dump(p,
"dev %d ", addr->a_ifindex);
360 rtnl_scope2str(addr->a_scope, buf,
sizeof(buf)));
362 rtnl_addr_flags2str(addr->a_flags, buf,
sizeof(buf));
369 nl_cache_put(link_cache);
372 static void addr_dump_details(
struct nl_object *obj,
struct nl_dump_params *p)
374 struct rtnl_addr *addr = (
struct rtnl_addr *) obj;
377 addr_dump_line(obj, p);
379 if (addr->ce_mask & (ADDR_ATTR_LABEL | ADDR_ATTR_BROADCAST |
380 ADDR_ATTR_MULTICAST)) {
381 nl_dump_line(p,
" ");
383 if (addr->ce_mask & ADDR_ATTR_LABEL)
384 nl_dump(p,
" label %s", addr->a_label);
386 if (addr->ce_mask & ADDR_ATTR_BROADCAST)
390 if (addr->ce_mask & ADDR_ATTR_MULTICAST)
395 if (addr->ce_mask & ADDR_ATTR_ANYCAST)
403 if (addr->ce_mask & ADDR_ATTR_CACHEINFO) {
404 struct rtnl_addr_cacheinfo *ci = &addr->a_cacheinfo;
406 nl_dump_line(p,
" valid-lifetime %s",
407 ci->aci_valid == 0xFFFFFFFFU ?
"forever" :
411 nl_dump(p,
" preferred-lifetime %s\n",
412 ci->aci_prefered == 0xFFFFFFFFU ?
"forever" :
416 nl_dump_line(p,
" created boot-time+%s ",
420 nl_dump(p,
"last-updated boot-time+%s\n",
426 static void addr_dump_stats(
struct nl_object *obj,
struct nl_dump_params *p)
428 addr_dump_details(obj, p);
431 static int addr_compare(
struct nl_object *_a,
struct nl_object *_b,
432 uint32_t attrs,
int flags)
434 struct rtnl_addr *a = (
struct rtnl_addr *) _a;
435 struct rtnl_addr *b = (
struct rtnl_addr *) _b;
438 #define ADDR_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, ADDR_ATTR_##ATTR, a, b, EXPR)
440 diff |= ADDR_DIFF(IFINDEX, a->a_ifindex != b->a_ifindex);
441 diff |= ADDR_DIFF(FAMILY, a->a_family != b->a_family);
442 diff |= ADDR_DIFF(SCOPE, a->a_scope != b->a_scope);
443 diff |= ADDR_DIFF(LABEL, strcmp(a->a_label, b->a_label));
444 diff |= ADDR_DIFF(PEER,
nl_addr_cmp(a->a_peer, b->a_peer));
445 diff |= ADDR_DIFF(LOCAL,
nl_addr_cmp(a->a_local, b->a_local));
446 diff |= ADDR_DIFF(MULTICAST,
nl_addr_cmp(a->a_multicast,
448 diff |= ADDR_DIFF(BROADCAST,
nl_addr_cmp(a->a_bcast, b->a_bcast));
449 diff |= ADDR_DIFF(ANYCAST,
nl_addr_cmp(a->a_anycast, b->a_anycast));
451 if (flags & LOOSE_COMPARISON)
452 diff |= ADDR_DIFF(FLAGS,
453 (a->a_flags ^ b->a_flags) & b->a_flag_mask);
455 diff |= ADDR_DIFF(FLAGS, a->a_flags != b->a_flags);
462 static const struct trans_tbl addr_attrs[] = {
463 __ADD(ADDR_ATTR_FAMILY, family)
464 __ADD(ADDR_ATTR_PREFIXLEN, prefixlen)
465 __ADD(ADDR_ATTR_FLAGS, flags)
466 __ADD(ADDR_ATTR_SCOPE, scope)
467 __ADD(ADDR_ATTR_IFINDEX, ifindex)
468 __ADD(ADDR_ATTR_LABEL, label)
469 __ADD(ADDR_ATTR_CACHEINFO, cacheinfo)
470 __ADD(ADDR_ATTR_PEER, peer)
471 __ADD(ADDR_ATTR_LOCAL, local)
472 __ADD(ADDR_ATTR_BROADCAST, broadcast)
473 __ADD(ADDR_ATTR_MULTICAST, multicast)
476 static
char *addr_attrs2str(
int attrs,
char *buf,
size_t len)
478 return __flags2str(attrs, buf, len, addr_attrs,
479 ARRAY_SIZE(addr_attrs));
487 struct rtnl_addr *rtnl_addr_alloc(
void)
492 void rtnl_addr_put(
struct rtnl_addr *addr)
504 int rtnl_addr_alloc_cache(
struct nl_sock *sk,
struct nl_cache **result)
524 struct nl_addr *addr)
528 if (cache->c_ops != &rtnl_addr_ops)
531 nl_list_for_each_entry(a, &cache->c_items, ce_list) {
532 if (ifindex && a->a_ifindex != ifindex)
535 if (a->ce_mask & ADDR_ATTR_LOCAL &&
547 static int build_addr_msg(
struct rtnl_addr *tmpl,
int cmd,
int flags,
548 struct nl_msg **result)
551 struct ifaddrmsg am = {
552 .ifa_family = tmpl->a_family,
553 .ifa_index = tmpl->a_ifindex,
554 .ifa_prefixlen = tmpl->a_prefixlen,
557 if (tmpl->ce_mask & ADDR_ATTR_SCOPE)
558 am.ifa_scope = tmpl->a_scope;
561 if (tmpl->a_family == AF_INET &&
562 tmpl->ce_mask & ADDR_ATTR_LOCAL &&
564 am.ifa_scope = RT_SCOPE_HOST;
566 am.ifa_scope = RT_SCOPE_UNIVERSE;
573 if (
nlmsg_append(msg, &am,
sizeof(am), NLMSG_ALIGNTO) < 0)
574 goto nla_put_failure;
576 if (tmpl->ce_mask & ADDR_ATTR_LOCAL)
579 if (tmpl->ce_mask & ADDR_ATTR_PEER)
581 else if (tmpl->ce_mask & ADDR_ATTR_LOCAL)
584 if (tmpl->ce_mask & ADDR_ATTR_LABEL)
587 if (tmpl->ce_mask & ADDR_ATTR_BROADCAST)
590 if (tmpl->ce_mask & ADDR_ATTR_CACHEINFO) {
591 struct ifa_cacheinfo ca = {
592 .ifa_valid = tmpl->a_cacheinfo.aci_valid,
593 .ifa_prefered = tmpl->a_cacheinfo.aci_prefered,
596 NLA_PUT(msg, IFA_CACHEINFO,
sizeof(ca), &ca);
636 struct nl_msg **result)
638 uint32_t required = ADDR_ATTR_IFINDEX | ADDR_ATTR_FAMILY |
639 ADDR_ATTR_PREFIXLEN | ADDR_ATTR_LOCAL;
641 if ((addr->ce_mask & required) != required)
642 return -NLE_MISSING_ATTR;
644 return build_addr_msg(addr, RTM_NEWADDR, NLM_F_CREATE | flags, result);
674 return wait_for_ack(sk);
709 struct nl_msg **result)
711 uint32_t required = ADDR_ATTR_IFINDEX | ADDR_ATTR_FAMILY;
713 if ((addr->ce_mask & required) != required)
714 return -NLE_MISSING_ATTR;
716 return build_addr_msg(addr, RTM_DELADDR, flags, result);
746 return wait_for_ack(sk);
756 int rtnl_addr_set_label(
struct rtnl_addr *addr,
const char *label)
758 if (strlen(label) >
sizeof(addr->a_label) - 1)
761 strcpy(addr->a_label, label);
762 addr->ce_mask |= ADDR_ATTR_LABEL;
767 char *rtnl_addr_get_label(
struct rtnl_addr *addr)
769 if (addr->ce_mask & ADDR_ATTR_LABEL)
770 return addr->a_label;
775 void rtnl_addr_set_ifindex(
struct rtnl_addr *addr,
int ifindex)
777 addr->a_ifindex = ifindex;
778 addr->ce_mask |= ADDR_ATTR_IFINDEX;
781 int rtnl_addr_get_ifindex(
struct rtnl_addr *addr)
783 return addr->a_ifindex;
786 void rtnl_addr_set_link(
struct rtnl_addr *addr,
struct rtnl_link *link)
795 addr->a_ifindex = link->l_index;
796 addr->ce_mask |= ADDR_ATTR_IFINDEX;
799 struct rtnl_link *rtnl_addr_get_link(
struct rtnl_addr *addr)
809 void rtnl_addr_set_family(
struct rtnl_addr *addr,
int family)
811 addr->a_family = family;
812 addr->ce_mask |= ADDR_ATTR_FAMILY;
815 int rtnl_addr_get_family(
struct rtnl_addr *addr)
817 return addr->a_family;
838 addr->a_prefixlen = prefixlen;
841 addr->ce_mask |= ADDR_ATTR_PREFIXLEN;
843 addr->ce_mask &= ~ADDR_ATTR_PREFIXLEN;
851 else if (addr->a_local)
855 int rtnl_addr_get_prefixlen(
struct rtnl_addr *addr)
857 return addr->a_prefixlen;
860 void rtnl_addr_set_scope(
struct rtnl_addr *addr,
int scope)
862 addr->a_scope = scope;
863 addr->ce_mask |= ADDR_ATTR_SCOPE;
866 int rtnl_addr_get_scope(
struct rtnl_addr *addr)
868 return addr->a_scope;
871 void rtnl_addr_set_flags(
struct rtnl_addr *addr,
unsigned int flags)
873 addr->a_flag_mask |= flags;
874 addr->a_flags |= flags;
875 addr->ce_mask |= ADDR_ATTR_FLAGS;
878 void rtnl_addr_unset_flags(
struct rtnl_addr *addr,
unsigned int flags)
880 addr->a_flag_mask |= flags;
881 addr->a_flags &= ~flags;
882 addr->ce_mask |= ADDR_ATTR_FLAGS;
885 unsigned int rtnl_addr_get_flags(
struct rtnl_addr *addr)
887 return addr->a_flags;
890 static inline int __assign_addr(
struct rtnl_addr *addr,
struct nl_addr **pos,
891 struct nl_addr *
new,
int flag)
894 if (addr->ce_mask & ADDR_ATTR_FAMILY) {
895 if (new->a_family != addr->a_family)
896 return -NLE_AF_MISMATCH;
898 addr->a_family =
new->a_family;
904 addr->ce_mask |= (flag | ADDR_ATTR_FAMILY);
910 addr->ce_mask &= ~flag;
916 int rtnl_addr_set_local(
struct rtnl_addr *addr,
struct nl_addr *local)
921 if ((addr->ce_mask & ADDR_ATTR_PEER) && local &&
925 err = __assign_addr(addr, &addr->a_local, local, ADDR_ATTR_LOCAL);
930 if (!(addr->ce_mask & ADDR_ATTR_PEER))
936 struct nl_addr *rtnl_addr_get_local(
struct rtnl_addr *addr)
938 return addr->a_local;
941 int rtnl_addr_set_peer(
struct rtnl_addr *addr,
struct nl_addr *peer)
945 if (peer && peer->a_family != AF_INET)
946 return -NLE_AF_NOSUPPORT;
948 err = __assign_addr(addr, &addr->a_peer, peer, ADDR_ATTR_PEER);
957 struct nl_addr *rtnl_addr_get_peer(
struct rtnl_addr *addr)
962 int rtnl_addr_set_broadcast(
struct rtnl_addr *addr,
struct nl_addr *bcast)
964 if (bcast && bcast->a_family != AF_INET)
965 return -NLE_AF_NOSUPPORT;
967 return __assign_addr(addr, &addr->a_bcast, bcast, ADDR_ATTR_BROADCAST);
970 struct nl_addr *rtnl_addr_get_broadcast(
struct rtnl_addr *addr)
972 return addr->a_bcast;
975 int rtnl_addr_set_multicast(
struct rtnl_addr *addr,
struct nl_addr *multicast)
977 if (multicast && multicast->a_family != AF_INET6)
978 return -NLE_AF_NOSUPPORT;
980 return __assign_addr(addr, &addr->a_multicast, multicast,
981 ADDR_ATTR_MULTICAST);
984 struct nl_addr *rtnl_addr_get_multicast(
struct rtnl_addr *addr)
986 return addr->a_multicast;
989 int rtnl_addr_set_anycast(
struct rtnl_addr *addr,
struct nl_addr *anycast)
991 if (anycast && anycast->a_family != AF_INET6)
992 return -NLE_AF_NOSUPPORT;
994 return __assign_addr(addr, &addr->a_anycast, anycast,
998 struct nl_addr *rtnl_addr_get_anycast(
struct rtnl_addr *addr)
1000 return addr->a_anycast;
1003 uint32_t rtnl_addr_get_valid_lifetime(
struct rtnl_addr *addr)
1005 if (addr->ce_mask & ADDR_ATTR_CACHEINFO)
1006 return addr->a_cacheinfo.aci_valid;
1011 void rtnl_addr_set_valid_lifetime(
struct rtnl_addr *addr, uint32_t lifetime)
1013 addr->a_cacheinfo.aci_valid = lifetime;
1014 addr->ce_mask |= ADDR_ATTR_CACHEINFO;
1017 uint32_t rtnl_addr_get_preferred_lifetime(
struct rtnl_addr *addr)
1019 if (addr->ce_mask & ADDR_ATTR_CACHEINFO)
1020 return addr->a_cacheinfo.aci_prefered;
1025 void rtnl_addr_set_preferred_lifetime(
struct rtnl_addr *addr, uint32_t lifetime)
1027 addr->a_cacheinfo.aci_prefered = lifetime;
1028 addr->ce_mask |= ADDR_ATTR_CACHEINFO;
1031 uint32_t rtnl_addr_get_create_time(
struct rtnl_addr *addr)
1033 return addr->a_cacheinfo.aci_cstamp;
1036 uint32_t rtnl_addr_get_last_update_time(
struct rtnl_addr *addr)
1038 return addr->a_cacheinfo.aci_tstamp;
1048 static const struct trans_tbl addr_flags[] = {
1049 __ADD(IFA_F_SECONDARY, secondary)
1050 __ADD(IFA_F_NODAD, nodad)
1051 __ADD(IFA_F_OPTIMISTIC, optimistic)
1052 __ADD(IFA_F_HOMEADDRESS, homeaddress)
1053 __ADD(IFA_F_DEPRECATED, deprecated)
1054 __ADD(IFA_F_TENTATIVE, tentative)
1055 __ADD(IFA_F_PERMANENT, permanent)
1058 char *rtnl_addr_flags2str(
int flags,
char *buf,
size_t size)
1060 return __flags2str(flags, buf, size, addr_flags,
1061 ARRAY_SIZE(addr_flags));
1064 int rtnl_addr_str2flags(
const char *name)
1066 return __str2flags(name, addr_flags, ARRAY_SIZE(addr_flags));
1071 static struct nl_object_ops addr_obj_ops = {
1072 .oo_name =
"route/addr",
1073 .oo_size =
sizeof(
struct rtnl_addr),
1074 .oo_constructor = addr_constructor,
1075 .oo_free_data = addr_free_data,
1076 .oo_clone = addr_clone,
1082 .oo_compare = addr_compare,
1083 .oo_attrs2str = addr_attrs2str,
1084 .oo_id_attrs = (ADDR_ATTR_FAMILY | ADDR_ATTR_IFINDEX |
1085 ADDR_ATTR_LOCAL | ADDR_ATTR_PREFIXLEN),
1088 static struct nl_af_group addr_groups[] = {
1089 { AF_INET, RTNLGRP_IPV4_IFADDR },
1090 { AF_INET6, RTNLGRP_IPV6_IFADDR },
1091 { END_OF_GROUP_LIST },
1094 static struct nl_cache_ops rtnl_addr_ops = {
1095 .co_name =
"route/addr",
1096 .co_hdrsize =
sizeof(
struct ifaddrmsg),
1098 { RTM_NEWADDR, NL_ACT_NEW,
"new" },
1099 { RTM_DELADDR, NL_ACT_DEL,
"del" },
1100 { RTM_GETADDR, NL_ACT_GET,
"get" },
1101 END_OF_MSGTYPES_LIST,
1103 .co_protocol = NETLINK_ROUTE,
1104 .co_groups = addr_groups,
1105 .co_request_update = addr_request_update,
1106 .co_msg_parser = addr_msg_parser,
1107 .co_obj_ops = &addr_obj_ops,
1110 static void __init addr_init(
void)
1115 static void __exit addr_exit(
void)