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_scope = ifa->ifa_scope;
220 addr->a_flags = tb[IFA_FLAGS] ?
nla_get_u32(tb[IFA_FLAGS]) :
222 addr->a_ifindex = ifa->ifa_index;
224 addr->ce_mask = (ADDR_ATTR_FAMILY | ADDR_ATTR_PREFIXLEN |
225 ADDR_ATTR_FLAGS | ADDR_ATTR_SCOPE | ADDR_ATTR_IFINDEX);
228 nla_strlcpy(addr->a_label, tb[IFA_LABEL], IFNAMSIZ);
229 addr->ce_mask |= ADDR_ATTR_LABEL;
233 if (tb[IFA_CACHEINFO]) {
234 struct ifa_cacheinfo *ca;
237 addr->a_cacheinfo.aci_prefered = ca->ifa_prefered;
238 addr->a_cacheinfo.aci_valid = ca->ifa_valid;
239 addr->a_cacheinfo.aci_cstamp = ca->cstamp;
240 addr->a_cacheinfo.aci_tstamp = ca->tstamp;
241 addr->ce_mask |= ADDR_ATTR_CACHEINFO;
248 addr->ce_mask |= ADDR_ATTR_LOCAL;
249 plen_addr = addr->a_local;
252 if (tb[IFA_ADDRESS]) {
262 if (!tb[IFA_LOCAL] || !
nl_addr_cmp(a, addr->a_local)) {
265 addr->ce_mask |= ADDR_ATTR_LOCAL;
268 addr->ce_mask |= ADDR_ATTR_PEER;
278 if (tb[IFA_BROADCAST]) {
283 addr->ce_mask |= ADDR_ATTR_BROADCAST;
287 if (tb[IFA_MULTICAST]) {
290 if (!addr->a_multicast)
293 addr->ce_mask |= ADDR_ATTR_MULTICAST;
297 if (tb[IFA_ANYCAST]) {
300 if (!addr->a_anycast)
303 addr->ce_mask |= ADDR_ATTR_ANYCAST;
306 if ((link_cache = __nl_cache_mngt_require(
"route/link"))) {
310 rtnl_addr_set_link(addr, link);
317 err = pp->pp_cb((
struct nl_object *) addr, pp);
328 static int addr_request_update(
struct nl_cache *cache,
struct nl_sock *sk)
333 static void addr_dump_line(
struct nl_object *obj,
struct nl_dump_params *p)
335 struct rtnl_addr *addr = (
struct rtnl_addr *) obj;
336 struct nl_cache *link_cache;
341 if (addr->ce_mask & ADDR_ATTR_LOCAL)
342 nl_dump_line(p,
"%s",
345 nl_dump_line(p,
"none");
347 if (addr->ce_mask & ADDR_ATTR_PEER)
351 nl_dump(p,
" %s ", nl_af2str(addr->a_family, buf,
sizeof(buf)));
358 nl_dump(p,
"dev %d ", addr->a_ifindex);
361 rtnl_scope2str(addr->a_scope, buf,
sizeof(buf)));
363 rtnl_addr_flags2str(addr->a_flags, buf,
sizeof(buf));
370 nl_cache_put(link_cache);
373 static void addr_dump_details(
struct nl_object *obj,
struct nl_dump_params *p)
375 struct rtnl_addr *addr = (
struct rtnl_addr *) obj;
378 addr_dump_line(obj, p);
380 if (addr->ce_mask & (ADDR_ATTR_LABEL | ADDR_ATTR_BROADCAST |
381 ADDR_ATTR_MULTICAST)) {
382 nl_dump_line(p,
" ");
384 if (addr->ce_mask & ADDR_ATTR_LABEL)
385 nl_dump(p,
" label %s", addr->a_label);
387 if (addr->ce_mask & ADDR_ATTR_BROADCAST)
391 if (addr->ce_mask & ADDR_ATTR_MULTICAST)
396 if (addr->ce_mask & ADDR_ATTR_ANYCAST)
404 if (addr->ce_mask & ADDR_ATTR_CACHEINFO) {
405 struct rtnl_addr_cacheinfo *ci = &addr->a_cacheinfo;
407 nl_dump_line(p,
" valid-lifetime %s",
408 ci->aci_valid == 0xFFFFFFFFU ?
"forever" :
412 nl_dump(p,
" preferred-lifetime %s\n",
413 ci->aci_prefered == 0xFFFFFFFFU ?
"forever" :
417 nl_dump_line(p,
" created boot-time+%s ",
421 nl_dump(p,
"last-updated boot-time+%s\n",
427 static void addr_dump_stats(
struct nl_object *obj,
struct nl_dump_params *p)
429 addr_dump_details(obj, p);
432 static int addr_compare(
struct nl_object *_a,
struct nl_object *_b,
433 uint32_t attrs,
int flags)
435 struct rtnl_addr *a = (
struct rtnl_addr *) _a;
436 struct rtnl_addr *b = (
struct rtnl_addr *) _b;
439 #define ADDR_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, ADDR_ATTR_##ATTR, a, b, EXPR)
441 diff |= ADDR_DIFF(IFINDEX, a->a_ifindex != b->a_ifindex);
442 diff |= ADDR_DIFF(FAMILY, a->a_family != b->a_family);
443 diff |= ADDR_DIFF(SCOPE, a->a_scope != b->a_scope);
444 diff |= ADDR_DIFF(LABEL, strcmp(a->a_label, b->a_label));
445 diff |= ADDR_DIFF(PEER,
nl_addr_cmp(a->a_peer, b->a_peer));
446 diff |= ADDR_DIFF(LOCAL,
nl_addr_cmp(a->a_local, b->a_local));
447 diff |= ADDR_DIFF(MULTICAST,
nl_addr_cmp(a->a_multicast,
449 diff |= ADDR_DIFF(BROADCAST,
nl_addr_cmp(a->a_bcast, b->a_bcast));
450 diff |= ADDR_DIFF(ANYCAST,
nl_addr_cmp(a->a_anycast, b->a_anycast));
452 if (flags & LOOSE_COMPARISON)
453 diff |= ADDR_DIFF(FLAGS,
454 (a->a_flags ^ b->a_flags) & b->a_flag_mask);
456 diff |= ADDR_DIFF(FLAGS, a->a_flags != b->a_flags);
463 static const struct trans_tbl addr_attrs[] = {
464 __ADD(ADDR_ATTR_FAMILY, family)
465 __ADD(ADDR_ATTR_PREFIXLEN, prefixlen)
466 __ADD(ADDR_ATTR_FLAGS, flags)
467 __ADD(ADDR_ATTR_SCOPE, scope)
468 __ADD(ADDR_ATTR_IFINDEX, ifindex)
469 __ADD(ADDR_ATTR_LABEL, label)
470 __ADD(ADDR_ATTR_CACHEINFO, cacheinfo)
471 __ADD(ADDR_ATTR_PEER, peer)
472 __ADD(ADDR_ATTR_LOCAL, local)
473 __ADD(ADDR_ATTR_BROADCAST, broadcast)
474 __ADD(ADDR_ATTR_MULTICAST, multicast)
477 static
char *addr_attrs2str(
int attrs,
char *buf,
size_t len)
479 return __flags2str(attrs, buf, len, addr_attrs,
480 ARRAY_SIZE(addr_attrs));
488 struct rtnl_addr *rtnl_addr_alloc(
void)
493 void rtnl_addr_put(
struct rtnl_addr *addr)
505 int rtnl_addr_alloc_cache(
struct nl_sock *sk,
struct nl_cache **result)
525 struct nl_addr *addr)
529 if (cache->c_ops != &rtnl_addr_ops)
532 nl_list_for_each_entry(a, &cache->c_items, ce_list) {
533 if (ifindex && a->a_ifindex != ifindex)
536 if (a->ce_mask & ADDR_ATTR_LOCAL &&
548 static int build_addr_msg(
struct rtnl_addr *tmpl,
int cmd,
int flags,
549 struct nl_msg **result)
552 struct ifaddrmsg am = {
553 .ifa_family = tmpl->a_family,
554 .ifa_index = tmpl->a_ifindex,
555 .ifa_prefixlen = tmpl->a_prefixlen,
556 .ifa_flags = tmpl->a_flags,
559 if (tmpl->ce_mask & ADDR_ATTR_SCOPE)
560 am.ifa_scope = tmpl->a_scope;
563 if (tmpl->a_family == AF_INET &&
564 tmpl->ce_mask & ADDR_ATTR_LOCAL &&
566 am.ifa_scope = RT_SCOPE_HOST;
568 am.ifa_scope = RT_SCOPE_UNIVERSE;
575 if (
nlmsg_append(msg, &am,
sizeof(am), NLMSG_ALIGNTO) < 0)
576 goto nla_put_failure;
578 if (tmpl->ce_mask & ADDR_ATTR_LOCAL)
581 if (tmpl->ce_mask & ADDR_ATTR_PEER)
583 else if (tmpl->ce_mask & ADDR_ATTR_LOCAL)
586 if (tmpl->ce_mask & ADDR_ATTR_LABEL)
589 if (tmpl->ce_mask & ADDR_ATTR_BROADCAST)
592 if (tmpl->ce_mask & ADDR_ATTR_CACHEINFO) {
593 struct ifa_cacheinfo ca = {
594 .ifa_valid = tmpl->a_cacheinfo.aci_valid,
595 .ifa_prefered = tmpl->a_cacheinfo.aci_prefered,
598 NLA_PUT(msg, IFA_CACHEINFO,
sizeof(ca), &ca);
639 struct nl_msg **result)
641 uint32_t required = ADDR_ATTR_IFINDEX | ADDR_ATTR_FAMILY |
642 ADDR_ATTR_PREFIXLEN | ADDR_ATTR_LOCAL;
644 if ((addr->ce_mask & required) != required)
645 return -NLE_MISSING_ATTR;
647 return build_addr_msg(addr, RTM_NEWADDR, NLM_F_CREATE | flags, result);
677 return wait_for_ack(sk);
712 struct nl_msg **result)
714 uint32_t required = ADDR_ATTR_IFINDEX | ADDR_ATTR_FAMILY;
716 if ((addr->ce_mask & required) != required)
717 return -NLE_MISSING_ATTR;
719 return build_addr_msg(addr, RTM_DELADDR, flags, result);
749 return wait_for_ack(sk);
759 int rtnl_addr_set_label(
struct rtnl_addr *addr,
const char *label)
761 if (strlen(label) >
sizeof(addr->a_label) - 1)
764 strcpy(addr->a_label, label);
765 addr->ce_mask |= ADDR_ATTR_LABEL;
770 char *rtnl_addr_get_label(
struct rtnl_addr *addr)
772 if (addr->ce_mask & ADDR_ATTR_LABEL)
773 return addr->a_label;
778 void rtnl_addr_set_ifindex(
struct rtnl_addr *addr,
int ifindex)
780 addr->a_ifindex = ifindex;
781 addr->ce_mask |= ADDR_ATTR_IFINDEX;
784 int rtnl_addr_get_ifindex(
struct rtnl_addr *addr)
786 return addr->a_ifindex;
789 void rtnl_addr_set_link(
struct rtnl_addr *addr,
struct rtnl_link *link)
798 addr->a_ifindex = link->l_index;
799 addr->ce_mask |= ADDR_ATTR_IFINDEX;
802 struct rtnl_link *rtnl_addr_get_link(
struct rtnl_addr *addr)
812 void rtnl_addr_set_family(
struct rtnl_addr *addr,
int family)
814 addr->a_family = family;
815 addr->ce_mask |= ADDR_ATTR_FAMILY;
818 int rtnl_addr_get_family(
struct rtnl_addr *addr)
820 return addr->a_family;
841 addr->a_prefixlen = prefixlen;
844 addr->ce_mask |= ADDR_ATTR_PREFIXLEN;
846 addr->ce_mask &= ~ADDR_ATTR_PREFIXLEN;
854 else if (addr->a_local)
858 int rtnl_addr_get_prefixlen(
struct rtnl_addr *addr)
860 return addr->a_prefixlen;
863 void rtnl_addr_set_scope(
struct rtnl_addr *addr,
int scope)
865 addr->a_scope = scope;
866 addr->ce_mask |= ADDR_ATTR_SCOPE;
869 int rtnl_addr_get_scope(
struct rtnl_addr *addr)
871 return addr->a_scope;
874 void rtnl_addr_set_flags(
struct rtnl_addr *addr,
unsigned int flags)
876 addr->a_flag_mask |= flags;
877 addr->a_flags |= flags;
878 addr->ce_mask |= ADDR_ATTR_FLAGS;
881 void rtnl_addr_unset_flags(
struct rtnl_addr *addr,
unsigned int flags)
883 addr->a_flag_mask |= flags;
884 addr->a_flags &= ~flags;
885 addr->ce_mask |= ADDR_ATTR_FLAGS;
888 unsigned int rtnl_addr_get_flags(
struct rtnl_addr *addr)
890 return addr->a_flags;
893 static inline int __assign_addr(
struct rtnl_addr *addr,
struct nl_addr **pos,
894 struct nl_addr *
new,
int flag)
897 if (addr->ce_mask & ADDR_ATTR_FAMILY) {
898 if (new->a_family != addr->a_family)
899 return -NLE_AF_MISMATCH;
901 addr->a_family =
new->a_family;
907 addr->ce_mask |= (flag | ADDR_ATTR_FAMILY);
913 addr->ce_mask &= ~flag;
919 int rtnl_addr_set_local(
struct rtnl_addr *addr,
struct nl_addr *local)
924 if ((addr->ce_mask & ADDR_ATTR_PEER) && local &&
928 err = __assign_addr(addr, &addr->a_local, local, ADDR_ATTR_LOCAL);
933 if (!(addr->ce_mask & ADDR_ATTR_PEER))
939 struct nl_addr *rtnl_addr_get_local(
struct rtnl_addr *addr)
941 return addr->a_local;
944 int rtnl_addr_set_peer(
struct rtnl_addr *addr,
struct nl_addr *peer)
948 if (peer && peer->a_family != AF_INET)
949 return -NLE_AF_NOSUPPORT;
951 err = __assign_addr(addr, &addr->a_peer, peer, ADDR_ATTR_PEER);
960 struct nl_addr *rtnl_addr_get_peer(
struct rtnl_addr *addr)
965 int rtnl_addr_set_broadcast(
struct rtnl_addr *addr,
struct nl_addr *bcast)
967 if (bcast && bcast->a_family != AF_INET)
968 return -NLE_AF_NOSUPPORT;
970 return __assign_addr(addr, &addr->a_bcast, bcast, ADDR_ATTR_BROADCAST);
973 struct nl_addr *rtnl_addr_get_broadcast(
struct rtnl_addr *addr)
975 return addr->a_bcast;
978 int rtnl_addr_set_multicast(
struct rtnl_addr *addr,
struct nl_addr *multicast)
980 if (multicast && multicast->a_family != AF_INET6)
981 return -NLE_AF_NOSUPPORT;
983 return __assign_addr(addr, &addr->a_multicast, multicast,
984 ADDR_ATTR_MULTICAST);
987 struct nl_addr *rtnl_addr_get_multicast(
struct rtnl_addr *addr)
989 return addr->a_multicast;
992 int rtnl_addr_set_anycast(
struct rtnl_addr *addr,
struct nl_addr *anycast)
994 if (anycast && anycast->a_family != AF_INET6)
995 return -NLE_AF_NOSUPPORT;
997 return __assign_addr(addr, &addr->a_anycast, anycast,
1001 struct nl_addr *rtnl_addr_get_anycast(
struct rtnl_addr *addr)
1003 return addr->a_anycast;
1006 uint32_t rtnl_addr_get_valid_lifetime(
struct rtnl_addr *addr)
1008 if (addr->ce_mask & ADDR_ATTR_CACHEINFO)
1009 return addr->a_cacheinfo.aci_valid;
1014 void rtnl_addr_set_valid_lifetime(
struct rtnl_addr *addr, uint32_t lifetime)
1016 addr->a_cacheinfo.aci_valid = lifetime;
1017 addr->ce_mask |= ADDR_ATTR_CACHEINFO;
1020 uint32_t rtnl_addr_get_preferred_lifetime(
struct rtnl_addr *addr)
1022 if (addr->ce_mask & ADDR_ATTR_CACHEINFO)
1023 return addr->a_cacheinfo.aci_prefered;
1028 void rtnl_addr_set_preferred_lifetime(
struct rtnl_addr *addr, uint32_t lifetime)
1030 addr->a_cacheinfo.aci_prefered = lifetime;
1031 addr->ce_mask |= ADDR_ATTR_CACHEINFO;
1034 uint32_t rtnl_addr_get_create_time(
struct rtnl_addr *addr)
1036 return addr->a_cacheinfo.aci_cstamp;
1039 uint32_t rtnl_addr_get_last_update_time(
struct rtnl_addr *addr)
1041 return addr->a_cacheinfo.aci_tstamp;
1051 static const struct trans_tbl addr_flags[] = {
1052 __ADD(IFA_F_SECONDARY, secondary)
1053 __ADD(IFA_F_NODAD, nodad)
1054 __ADD(IFA_F_OPTIMISTIC, optimistic)
1055 __ADD(IFA_F_HOMEADDRESS, homeaddress)
1056 __ADD(IFA_F_DEPRECATED, deprecated)
1057 __ADD(IFA_F_TENTATIVE, tentative)
1058 __ADD(IFA_F_PERMANENT, permanent)
1059 __ADD(IFA_F_MANAGETEMPADDR, mngtmpaddr)
1060 __ADD(IFA_F_NOPREFIXROUTE, noprefixroute)
1063 char *rtnl_addr_flags2str(
int flags,
char *buf,
size_t size)
1065 return __flags2str(flags, buf, size, addr_flags,
1066 ARRAY_SIZE(addr_flags));
1069 int rtnl_addr_str2flags(
const char *name)
1071 return __str2flags(name, addr_flags, ARRAY_SIZE(addr_flags));
1076 static struct nl_object_ops addr_obj_ops = {
1077 .oo_name =
"route/addr",
1078 .oo_size =
sizeof(
struct rtnl_addr),
1079 .oo_constructor = addr_constructor,
1080 .oo_free_data = addr_free_data,
1081 .oo_clone = addr_clone,
1087 .oo_compare = addr_compare,
1088 .oo_attrs2str = addr_attrs2str,
1089 .oo_id_attrs = (ADDR_ATTR_FAMILY | ADDR_ATTR_IFINDEX |
1090 ADDR_ATTR_LOCAL | ADDR_ATTR_PREFIXLEN),
1093 static struct nl_af_group addr_groups[] = {
1094 { AF_INET, RTNLGRP_IPV4_IFADDR },
1095 { AF_INET6, RTNLGRP_IPV6_IFADDR },
1096 { END_OF_GROUP_LIST },
1099 static struct nl_cache_ops rtnl_addr_ops = {
1100 .co_name =
"route/addr",
1101 .co_hdrsize =
sizeof(
struct ifaddrmsg),
1103 { RTM_NEWADDR, NL_ACT_NEW,
"new" },
1104 { RTM_DELADDR, NL_ACT_DEL,
"del" },
1105 { RTM_GETADDR, NL_ACT_GET,
"get" },
1106 END_OF_MSGTYPES_LIST,
1108 .co_protocol = NETLINK_ROUTE,
1109 .co_groups = addr_groups,
1110 .co_request_update = addr_request_update,
1111 .co_msg_parser = addr_msg_parser,
1112 .co_obj_ops = &addr_obj_ops,
1115 static void __init addr_init(
void)
1120 static void __exit addr_exit(
void)