33 #include <netlink-private/netlink.h>
34 #include <netlink/netlink.h>
35 #include <netlink/cache.h>
36 #include <netlink/utils.h>
37 #include <netlink/data.h>
38 #include <netlink/hashtable.h>
39 #include <netlink/route/rtnl.h>
40 #include <netlink/route/route.h>
41 #include <netlink/route/link.h>
42 #include <netlink/route/nexthop.h>
45 #define ROUTE_ATTR_FAMILY 0x000001
46 #define ROUTE_ATTR_TOS 0x000002
47 #define ROUTE_ATTR_TABLE 0x000004
48 #define ROUTE_ATTR_PROTOCOL 0x000008
49 #define ROUTE_ATTR_SCOPE 0x000010
50 #define ROUTE_ATTR_TYPE 0x000020
51 #define ROUTE_ATTR_FLAGS 0x000040
52 #define ROUTE_ATTR_DST 0x000080
53 #define ROUTE_ATTR_SRC 0x000100
54 #define ROUTE_ATTR_IIF 0x000200
55 #define ROUTE_ATTR_OIF 0x000400
56 #define ROUTE_ATTR_GATEWAY 0x000800
57 #define ROUTE_ATTR_PRIO 0x001000
58 #define ROUTE_ATTR_PREF_SRC 0x002000
59 #define ROUTE_ATTR_METRICS 0x004000
60 #define ROUTE_ATTR_MULTIPATH 0x008000
61 #define ROUTE_ATTR_REALMS 0x010000
62 #define ROUTE_ATTR_CACHEINFO 0x020000
65 static void route_constructor(
struct nl_object *c)
67 struct rtnl_route *r = (
struct rtnl_route *) c;
69 r->rt_family = AF_UNSPEC;
70 r->rt_scope = RT_SCOPE_NOWHERE;
71 r->rt_table = RT_TABLE_MAIN;
72 r->rt_protocol = RTPROT_STATIC;
73 r->rt_type = RTN_UNICAST;
76 nl_init_list_head(&r->rt_nexthops);
79 static void route_free_data(
struct nl_object *c)
81 struct rtnl_route *r = (
struct rtnl_route *) c;
82 struct rtnl_nexthop *nh, *tmp;
91 nl_list_for_each_entry_safe(nh, tmp, &r->rt_nexthops, rtnh_list) {
92 rtnl_route_remove_nexthop(r, nh);
93 rtnl_route_nh_free(nh);
97 static int route_clone(
struct nl_object *_dst,
struct nl_object *_src)
99 struct rtnl_route *dst = (
struct rtnl_route *) _dst;
100 struct rtnl_route *src = (
struct rtnl_route *) _src;
101 struct rtnl_nexthop *nh, *
new;
111 if (src->rt_pref_src)
118 nl_init_list_head(&dst->rt_nexthops);
119 nl_list_for_each_entry(nh, &src->rt_nexthops, rtnh_list) {
120 new = rtnl_route_nh_clone(nh);
124 rtnl_route_add_nexthop(dst,
new);
130 static void route_dump_line(
struct nl_object *a,
struct nl_dump_params *p)
132 struct rtnl_route *r = (
struct rtnl_route *) a;
133 int cache = 0, flags;
136 if (r->rt_flags & RTM_F_CLONED)
139 nl_dump_line(p,
"%s ", nl_af2str(r->rt_family, buf,
sizeof(buf)));
144 if (!(r->ce_mask & ROUTE_ATTR_DST) ||
150 if (r->ce_mask & ROUTE_ATTR_TABLE && !cache)
152 rtnl_route_table2str(r->rt_table, buf,
sizeof(buf)));
154 if (r->ce_mask & ROUTE_ATTR_TYPE)
156 nl_rtntype2str(r->rt_type, buf,
sizeof(buf)));
158 if (r->ce_mask & ROUTE_ATTR_TOS && r->rt_tos != 0)
159 nl_dump(p,
"tos %#x ", r->rt_tos);
161 if (r->ce_mask & ROUTE_ATTR_MULTIPATH) {
162 struct rtnl_nexthop *nh;
164 nl_list_for_each_entry(nh, &r->rt_nexthops, rtnh_list) {
165 p->
dp_ivar = NH_DUMP_FROM_ONELINE;
166 rtnl_route_nh_dump(nh, p);
170 flags = r->rt_flags & ~(RTM_F_CLONED);
171 if (r->ce_mask & ROUTE_ATTR_FLAGS && flags) {
175 #define PRINT_FLAG(f) if (flags & RTNH_F_##f) { \
176 flags &= ~RTNH_F_##f; nl_dump(p, #f "%s", flags ? "," : ""); }
179 PRINT_FLAG(PERVASIVE);
182 #define PRINT_FLAG(f) if (flags & RTM_F_##f) { \
183 flags &= ~RTM_F_##f; nl_dump(p, #f "%s", flags ? "," : ""); }
185 PRINT_FLAG(EQUALIZE);
189 #define PRINT_FLAG(f) if (flags & RTCF_##f) { \
190 flags &= ~RTCF_##f; nl_dump(p, #f "%s", flags ? "," : ""); }
192 PRINT_FLAG(REDIRECTED);
193 PRINT_FLAG(DOREDIRECT);
194 PRINT_FLAG(DIRECTSRC);
196 PRINT_FLAG(BROADCAST);
197 PRINT_FLAG(MULTICAST);
207 static void route_dump_details(
struct nl_object *a,
struct nl_dump_params *p)
209 struct rtnl_route *r = (
struct rtnl_route *) a;
210 struct nl_cache *link_cache;
216 route_dump_line(a, p);
217 nl_dump_line(p,
" ");
219 if (r->ce_mask & ROUTE_ATTR_PREF_SRC)
220 nl_dump(p,
"preferred-src %s ",
223 if (r->ce_mask & ROUTE_ATTR_SCOPE && r->rt_scope != RT_SCOPE_NOWHERE)
225 rtnl_scope2str(r->rt_scope, buf,
sizeof(buf)));
227 if (r->ce_mask & ROUTE_ATTR_PRIO)
228 nl_dump(p,
"priority %#x ", r->rt_prio);
230 if (r->ce_mask & ROUTE_ATTR_PROTOCOL)
232 rtnl_route_proto2str(r->rt_protocol, buf,
sizeof(buf)));
234 if (r->ce_mask & ROUTE_ATTR_IIF) {
240 nl_dump(p,
"iif %d ", r->rt_iif);
243 if (r->ce_mask & ROUTE_ATTR_SRC)
248 if (r->ce_mask & ROUTE_ATTR_MULTIPATH) {
249 struct rtnl_nexthop *nh;
251 nl_list_for_each_entry(nh, &r->rt_nexthops, rtnh_list) {
252 nl_dump_line(p,
" ");
253 p->
dp_ivar = NH_DUMP_FROM_DETAILS;
254 rtnl_route_nh_dump(nh, p);
259 if ((r->ce_mask & ROUTE_ATTR_CACHEINFO) && r->rt_cacheinfo.rtci_error) {
260 nl_dump_line(p,
" cacheinfo error %d (%s)\n",
261 r->rt_cacheinfo.rtci_error,
262 strerror_r(-r->rt_cacheinfo.rtci_error, buf,
sizeof(buf)));
265 if (r->ce_mask & ROUTE_ATTR_METRICS) {
266 nl_dump_line(p,
" metrics [");
267 for (i = 0; i < RTAX_MAX; i++)
268 if (r->rt_metrics_mask & (1 << i))
270 rtnl_route_metric2str(i+1,
277 nl_cache_put(link_cache);
280 static void route_dump_stats(
struct nl_object *obj,
struct nl_dump_params *p)
282 struct rtnl_route *route = (
struct rtnl_route *) obj;
284 route_dump_details(obj, p);
286 if (route->ce_mask & ROUTE_ATTR_CACHEINFO) {
289 nl_dump_line(p,
" used %u refcnt %u last-use %us "
291 ci->rtci_used, ci->rtci_clntref,
297 static void route_keygen(
struct nl_object *obj, uint32_t *hashkey,
300 struct rtnl_route *route = (
struct rtnl_route *) obj;
301 unsigned int rkey_sz;
302 struct nl_addr *addr = NULL;
303 struct route_hash_key {
309 } __attribute__((packed)) *rkey;
311 char buf[INET6_ADDRSTRLEN+5];
315 addr = route->rt_dst;
317 rkey_sz =
sizeof(*rkey);
320 rkey = calloc(1, rkey_sz);
322 NL_DBG(2,
"Warning: calloc failed for %d bytes...\n", rkey_sz);
326 rkey->rt_family = route->rt_family;
327 rkey->rt_tos = route->rt_tos;
328 rkey->rt_table = route->rt_table;
329 rkey->rt_prio = route->rt_prio;
334 *hashkey = nl_hash(rkey, rkey_sz, 0) % table_sz;
336 NL_DBG(5,
"route %p key (fam %d tos %d table %d addr %s) keysz %d "
337 "hash 0x%x\n", route, rkey->rt_family, rkey->rt_tos,
338 rkey->rt_table,
nl_addr2str(addr, buf,
sizeof(buf)),
346 static int route_compare(
struct nl_object *_a,
struct nl_object *_b,
347 uint32_t attrs,
int flags)
349 struct rtnl_route *a = (
struct rtnl_route *) _a;
350 struct rtnl_route *b = (
struct rtnl_route *) _b;
351 struct rtnl_nexthop *nh_a, *nh_b;
352 int i, diff = 0, found;
354 #define ROUTE_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, ROUTE_ATTR_##ATTR, a, b, EXPR)
356 diff |= ROUTE_DIFF(FAMILY, a->rt_family != b->rt_family);
357 diff |= ROUTE_DIFF(TOS, a->rt_tos != b->rt_tos);
358 diff |= ROUTE_DIFF(TABLE, a->rt_table != b->rt_table);
359 diff |= ROUTE_DIFF(PROTOCOL, a->rt_protocol != b->rt_protocol);
360 diff |= ROUTE_DIFF(SCOPE, a->rt_scope != b->rt_scope);
361 diff |= ROUTE_DIFF(TYPE, a->rt_type != b->rt_type);
362 diff |= ROUTE_DIFF(PRIO, a->rt_prio != b->rt_prio);
363 diff |= ROUTE_DIFF(DST,
nl_addr_cmp(a->rt_dst, b->rt_dst));
364 diff |= ROUTE_DIFF(SRC,
nl_addr_cmp(a->rt_src, b->rt_src));
365 diff |= ROUTE_DIFF(IIF, a->rt_iif != b->rt_iif);
366 diff |= ROUTE_DIFF(PREF_SRC,
nl_addr_cmp(a->rt_pref_src,
369 if (flags & LOOSE_COMPARISON) {
370 nl_list_for_each_entry(nh_b, &b->rt_nexthops, rtnh_list) {
372 nl_list_for_each_entry(nh_a, &a->rt_nexthops,
374 if (!rtnl_route_nh_compare(nh_a, nh_b,
385 for (i = 0; i < RTAX_MAX - 1; i++) {
386 if (a->rt_metrics_mask & (1 << i) &&
387 (!(b->rt_metrics_mask & (1 << i)) ||
388 a->rt_metrics[i] != b->rt_metrics[i]))
389 diff |= ROUTE_DIFF(METRICS, 1);
392 diff |= ROUTE_DIFF(FLAGS,
393 (a->rt_flags ^ b->rt_flags) & b->rt_flag_mask);
395 if (a->rt_nr_nh != b->rt_nr_nh)
399 nl_list_for_each_entry(nh_a, &a->rt_nexthops, rtnh_list) {
401 nl_list_for_each_entry(nh_b, &b->rt_nexthops,
403 if (!rtnl_route_nh_compare(nh_a, nh_b, ~0, 0)) {
414 nl_list_for_each_entry(nh_b, &b->rt_nexthops, rtnh_list) {
416 nl_list_for_each_entry(nh_a, &a->rt_nexthops,
418 if (!rtnl_route_nh_compare(nh_a, nh_b, ~0, 0)) {
427 for (i = 0; i < RTAX_MAX - 1; i++) {
428 if ((a->rt_metrics_mask & (1 << i)) ^
429 (b->rt_metrics_mask & (1 << i)))
430 diff |= ROUTE_DIFF(METRICS, 1);
432 diff |= ROUTE_DIFF(METRICS,
433 a->rt_metrics[i] != b->rt_metrics[i]);
436 diff |= ROUTE_DIFF(FLAGS, a->rt_flags != b->rt_flags);
443 diff |= ROUTE_DIFF(MULTIPATH, 1);
449 static int route_update(
struct nl_object *old_obj,
struct nl_object *new_obj)
451 struct rtnl_route *new_route = (
struct rtnl_route *) new_obj;
452 struct rtnl_route *old_route = (
struct rtnl_route *) old_obj;
453 struct rtnl_nexthop *new_nh;
454 int action = new_obj->ce_msgtype;
456 char buf[INET6_ADDRSTRLEN+5];
466 if (new_route->rt_family != AF_INET6 ||
467 new_route->rt_table == RT_TABLE_LOCAL)
468 return -NLE_OPNOTSUPP;
474 if (rtnl_route_get_nnexthops(new_route) != 1)
475 return -NLE_OPNOTSUPP;
482 new_nh = rtnl_route_nexthop_n(new_route, 0);
483 if (!new_nh || !rtnl_route_nh_get_gateway(new_nh))
484 return -NLE_OPNOTSUPP;
487 case RTM_NEWROUTE : {
488 struct rtnl_nexthop *cloned_nh;
493 cloned_nh = rtnl_route_nh_clone(new_nh);
496 rtnl_route_add_nexthop(old_route, cloned_nh);
498 NL_DBG(2,
"Route obj %p updated. Added "
499 "nexthop %p via %s\n", old_route, cloned_nh,
504 case RTM_DELROUTE : {
505 struct rtnl_nexthop *old_nh;
513 if (rtnl_route_get_nnexthops(old_route) <= 1)
514 return -NLE_OPNOTSUPP;
519 nl_list_for_each_entry(old_nh, &old_route->rt_nexthops,
521 if (!rtnl_route_nh_compare(old_nh, new_nh, ~0, 0)) {
523 rtnl_route_remove_nexthop(old_route, old_nh);
525 NL_DBG(2,
"Route obj %p updated. Removed "
526 "nexthop %p via %s\n", old_route,
531 rtnl_route_nh_free(old_nh);
538 NL_DBG(2,
"Unknown action associated "
539 "to object %p during route update\n", new_obj);
540 return -NLE_OPNOTSUPP;
546 static const struct trans_tbl route_attrs[] = {
547 __ADD(ROUTE_ATTR_FAMILY, family)
548 __ADD(ROUTE_ATTR_TOS, tos)
549 __ADD(ROUTE_ATTR_TABLE, table)
550 __ADD(ROUTE_ATTR_PROTOCOL, protocol)
551 __ADD(ROUTE_ATTR_SCOPE, scope)
552 __ADD(ROUTE_ATTR_TYPE, type)
553 __ADD(ROUTE_ATTR_FLAGS, flags)
554 __ADD(ROUTE_ATTR_DST, dst)
555 __ADD(ROUTE_ATTR_SRC, src)
556 __ADD(ROUTE_ATTR_IIF, iif)
557 __ADD(ROUTE_ATTR_OIF, oif)
558 __ADD(ROUTE_ATTR_GATEWAY, gateway)
559 __ADD(ROUTE_ATTR_PRIO, prio)
560 __ADD(ROUTE_ATTR_PREF_SRC, pref_src)
561 __ADD(ROUTE_ATTR_METRICS, metrics)
562 __ADD(ROUTE_ATTR_MULTIPATH, multipath)
563 __ADD(ROUTE_ATTR_REALMS, realms)
564 __ADD(ROUTE_ATTR_CACHEINFO, cacheinfo)
567 static
char *route_attrs2str(
int attrs,
char *buf,
size_t len)
569 return __flags2str(attrs, buf, len, route_attrs,
570 ARRAY_SIZE(route_attrs));
578 struct rtnl_route *rtnl_route_alloc(
void)
583 void rtnl_route_get(
struct rtnl_route *route)
588 void rtnl_route_put(
struct rtnl_route *route)
600 void rtnl_route_set_table(
struct rtnl_route *route, uint32_t table)
602 route->rt_table = table;
603 route->ce_mask |= ROUTE_ATTR_TABLE;
606 uint32_t rtnl_route_get_table(
struct rtnl_route *route)
608 return route->rt_table;
611 void rtnl_route_set_scope(
struct rtnl_route *route, uint8_t scope)
613 route->rt_scope = scope;
614 route->ce_mask |= ROUTE_ATTR_SCOPE;
617 uint8_t rtnl_route_get_scope(
struct rtnl_route *route)
619 return route->rt_scope;
622 void rtnl_route_set_tos(
struct rtnl_route *route, uint8_t tos)
625 route->ce_mask |= ROUTE_ATTR_TOS;
628 uint8_t rtnl_route_get_tos(
struct rtnl_route *route)
630 return route->rt_tos;
633 void rtnl_route_set_protocol(
struct rtnl_route *route, uint8_t protocol)
635 route->rt_protocol = protocol;
636 route->ce_mask |= ROUTE_ATTR_PROTOCOL;
639 uint8_t rtnl_route_get_protocol(
struct rtnl_route *route)
641 return route->rt_protocol;
644 void rtnl_route_set_priority(
struct rtnl_route *route, uint32_t prio)
646 route->rt_prio = prio;
647 route->ce_mask |= ROUTE_ATTR_PRIO;
650 uint32_t rtnl_route_get_priority(
struct rtnl_route *route)
652 return route->rt_prio;
655 int rtnl_route_set_family(
struct rtnl_route *route, uint8_t family)
657 if (family != AF_INET && family != AF_INET6 && family != AF_DECnet)
658 return -NLE_AF_NOSUPPORT;
660 route->rt_family = family;
661 route->ce_mask |= ROUTE_ATTR_FAMILY;
666 uint8_t rtnl_route_get_family(
struct rtnl_route *route)
668 return route->rt_family;
671 int rtnl_route_set_dst(
struct rtnl_route *route,
struct nl_addr *addr)
673 if (route->ce_mask & ROUTE_ATTR_FAMILY) {
674 if (addr->a_family != route->rt_family)
675 return -NLE_AF_MISMATCH;
677 route->rt_family = addr->a_family;
683 route->rt_dst = addr;
685 route->ce_mask |= (ROUTE_ATTR_DST | ROUTE_ATTR_FAMILY);
690 struct nl_addr *rtnl_route_get_dst(
struct rtnl_route *route)
692 return route->rt_dst;
695 int rtnl_route_set_src(
struct rtnl_route *route,
struct nl_addr *addr)
697 if (addr->a_family == AF_INET)
698 return -NLE_SRCRT_NOSUPPORT;
700 if (route->ce_mask & ROUTE_ATTR_FAMILY) {
701 if (addr->a_family != route->rt_family)
702 return -NLE_AF_MISMATCH;
704 route->rt_family = addr->a_family;
710 route->rt_src = addr;
711 route->ce_mask |= (ROUTE_ATTR_SRC | ROUTE_ATTR_FAMILY);
716 struct nl_addr *rtnl_route_get_src(
struct rtnl_route *route)
718 return route->rt_src;
721 int rtnl_route_set_type(
struct rtnl_route *route, uint8_t type)
726 route->rt_type = type;
727 route->ce_mask |= ROUTE_ATTR_TYPE;
732 uint8_t rtnl_route_get_type(
struct rtnl_route *route)
734 return route->rt_type;
737 void rtnl_route_set_flags(
struct rtnl_route *route, uint32_t flags)
739 route->rt_flag_mask |= flags;
740 route->rt_flags |= flags;
741 route->ce_mask |= ROUTE_ATTR_FLAGS;
744 void rtnl_route_unset_flags(
struct rtnl_route *route, uint32_t flags)
746 route->rt_flag_mask |= flags;
747 route->rt_flags &= ~flags;
748 route->ce_mask |= ROUTE_ATTR_FLAGS;
751 uint32_t rtnl_route_get_flags(
struct rtnl_route *route)
753 return route->rt_flags;
756 int rtnl_route_set_metric(
struct rtnl_route *route,
int metric, uint32_t value)
758 if (metric > RTAX_MAX || metric < 1)
761 route->rt_metrics[metric - 1] = value;
763 if (!(route->rt_metrics_mask & (1 << (metric - 1)))) {
764 route->rt_nmetrics++;
765 route->rt_metrics_mask |= (1 << (metric - 1));
768 route->ce_mask |= ROUTE_ATTR_METRICS;
773 int rtnl_route_unset_metric(
struct rtnl_route *route,
int metric)
775 if (metric > RTAX_MAX || metric < 1)
778 if (route->rt_metrics_mask & (1 << (metric - 1))) {
779 route->rt_nmetrics--;
780 route->rt_metrics_mask &= ~(1 << (metric - 1));
786 int rtnl_route_get_metric(
struct rtnl_route *route,
int metric, uint32_t *value)
788 if (metric > RTAX_MAX || metric < 1)
791 if (!(route->rt_metrics_mask & (1 << (metric - 1))))
792 return -NLE_OBJ_NOTFOUND;
795 *value = route->rt_metrics[metric - 1];
800 int rtnl_route_set_pref_src(
struct rtnl_route *route,
struct nl_addr *addr)
802 if (route->ce_mask & ROUTE_ATTR_FAMILY) {
803 if (addr->a_family != route->rt_family)
804 return -NLE_AF_MISMATCH;
806 route->rt_family = addr->a_family;
808 if (route->rt_pref_src)
812 route->rt_pref_src = addr;
813 route->ce_mask |= (ROUTE_ATTR_PREF_SRC | ROUTE_ATTR_FAMILY);
818 struct nl_addr *rtnl_route_get_pref_src(
struct rtnl_route *route)
820 return route->rt_pref_src;
823 void rtnl_route_set_iif(
struct rtnl_route *route,
int ifindex)
825 route->rt_iif = ifindex;
826 route->ce_mask |= ROUTE_ATTR_IIF;
829 int rtnl_route_get_iif(
struct rtnl_route *route)
831 return route->rt_iif;
834 void rtnl_route_add_nexthop(
struct rtnl_route *route,
struct rtnl_nexthop *nh)
836 nl_list_add_tail(&nh->rtnh_list, &route->rt_nexthops);
838 route->ce_mask |= ROUTE_ATTR_MULTIPATH;
841 void rtnl_route_remove_nexthop(
struct rtnl_route *route,
struct rtnl_nexthop *nh)
843 if (route->ce_mask & ROUTE_ATTR_MULTIPATH) {
845 nl_list_del(&nh->rtnh_list);
849 struct nl_list_head *rtnl_route_get_nexthops(
struct rtnl_route *route)
851 if (route->ce_mask & ROUTE_ATTR_MULTIPATH)
852 return &route->rt_nexthops;
857 int rtnl_route_get_nnexthops(
struct rtnl_route *route)
859 if (route->ce_mask & ROUTE_ATTR_MULTIPATH)
860 return route->rt_nr_nh;
865 void rtnl_route_foreach_nexthop(
struct rtnl_route *r,
866 void (*cb)(
struct rtnl_nexthop *,
void *),
869 struct rtnl_nexthop *nh;
871 if (r->ce_mask & ROUTE_ATTR_MULTIPATH) {
872 nl_list_for_each_entry(nh, &r->rt_nexthops, rtnh_list) {
878 struct rtnl_nexthop *rtnl_route_nexthop_n(
struct rtnl_route *r,
int n)
880 struct rtnl_nexthop *nh;
883 if (r->ce_mask & ROUTE_ATTR_MULTIPATH && r->rt_nr_nh > n) {
885 nl_list_for_each_entry(nh, &r->rt_nexthops, rtnh_list) {
886 if (i == n)
return nh;
915 if (route->rt_type == RTN_LOCAL)
916 return RT_SCOPE_HOST;
918 if (!nl_list_empty(&route->rt_nexthops)) {
919 struct rtnl_nexthop *nh;
925 nl_list_for_each_entry(nh, &route->rt_nexthops, rtnh_list) {
926 if (nh->rtnh_gateway)
927 return RT_SCOPE_UNIVERSE;
931 return RT_SCOPE_LINK;
936 static struct nla_policy route_policy[RTA_MAX+1] = {
938 [RTA_OIF] = { .type =
NLA_U32 },
939 [RTA_PRIORITY] = { .type =
NLA_U32 },
940 [RTA_FLOW] = { .type =
NLA_U32 },
941 [RTA_CACHEINFO] = { .minlen =
sizeof(
struct rta_cacheinfo) },
946 static int parse_multipath(
struct rtnl_route *route,
struct nlattr *attr)
948 struct rtnl_nexthop *nh = NULL;
949 struct rtnexthop *rtnh =
nla_data(attr);
953 while (tlen >=
sizeof(*rtnh) && tlen >= rtnh->rtnh_len) {
954 nh = rtnl_route_nh_alloc();
958 rtnl_route_nh_set_weight(nh, rtnh->rtnh_hops);
959 rtnl_route_nh_set_ifindex(nh, rtnh->rtnh_ifindex);
960 rtnl_route_nh_set_flags(nh, rtnh->rtnh_flags);
962 if (rtnh->rtnh_len >
sizeof(*rtnh)) {
963 struct nlattr *ntb[RTA_MAX + 1];
965 err =
nla_parse(ntb, RTA_MAX, (
struct nlattr *)
967 rtnh->rtnh_len -
sizeof(*rtnh),
972 if (ntb[RTA_GATEWAY]) {
973 struct nl_addr *addr;
982 rtnl_route_nh_set_gateway(nh, addr);
990 rtnl_route_nh_set_realms(nh, realms);
994 rtnl_route_add_nexthop(route, nh);
995 tlen -= RTNH_ALIGN(rtnh->rtnh_len);
996 rtnh = RTNH_NEXT(rtnh);
1002 rtnl_route_nh_free(nh);
1007 int rtnl_route_parse(
struct nlmsghdr *nlh,
struct rtnl_route **result)
1010 struct rtnl_route *route;
1011 struct nlattr *tb[RTA_MAX + 1];
1012 struct nl_addr *src = NULL, *dst = NULL, *addr;
1013 struct rtnl_nexthop *old_nh = NULL;
1016 route = rtnl_route_alloc();
1022 route->ce_msgtype = nlh->nlmsg_type;
1024 err =
nlmsg_parse(nlh,
sizeof(
struct rtmsg), tb, RTA_MAX, route_policy);
1029 route->rt_family = family = rtm->rtm_family;
1030 route->rt_tos = rtm->rtm_tos;
1031 route->rt_table = rtm->rtm_table;
1032 route->rt_type = rtm->rtm_type;
1033 route->rt_scope = rtm->rtm_scope;
1034 route->rt_protocol = rtm->rtm_protocol;
1035 route->rt_flags = rtm->rtm_flags;
1038 route->ce_mask |= ROUTE_ATTR_FAMILY | ROUTE_ATTR_TOS |
1039 ROUTE_ATTR_TABLE | ROUTE_ATTR_TYPE |
1040 ROUTE_ATTR_SCOPE | ROUTE_ATTR_PROTOCOL |
1041 ROUTE_ATTR_FLAGS | ROUTE_ATTR_PRIO;
1053 err = rtnl_route_set_dst(route, dst);
1062 }
else if (rtm->rtm_src_len)
1068 rtnl_route_set_src(route, src);
1073 rtnl_route_set_table(route,
nla_get_u32(tb[RTA_TABLE]));
1076 rtnl_route_set_iif(route,
nla_get_u32(tb[RTA_IIF]));
1078 if (tb[RTA_PRIORITY])
1079 rtnl_route_set_priority(route,
nla_get_u32(tb[RTA_PRIORITY]));
1081 if (tb[RTA_PREFSRC]) {
1084 rtnl_route_set_pref_src(route, addr);
1088 if (tb[RTA_METRICS]) {
1089 struct nlattr *mtb[RTAX_MAX + 1];
1096 for (i = 1; i <= RTAX_MAX; i++) {
1097 if (mtb[i] &&
nla_len(mtb[i]) >=
sizeof(uint32_t)) {
1099 if (rtnl_route_set_metric(route, i, m) < 0)
1105 if (tb[RTA_MULTIPATH])
1106 if ((err = parse_multipath(route, tb[RTA_MULTIPATH])) < 0)
1109 if (tb[RTA_CACHEINFO]) {
1110 nla_memcpy(&route->rt_cacheinfo, tb[RTA_CACHEINFO],
1111 sizeof(route->rt_cacheinfo));
1112 route->ce_mask |= ROUTE_ATTR_CACHEINFO;
1116 if (!old_nh && !(old_nh = rtnl_route_nh_alloc()))
1119 rtnl_route_nh_set_ifindex(old_nh,
nla_get_u32(tb[RTA_OIF]));
1122 if (tb[RTA_GATEWAY]) {
1123 if (!old_nh && !(old_nh = rtnl_route_nh_alloc()))
1129 rtnl_route_nh_set_gateway(old_nh, addr);
1134 if (!old_nh && !(old_nh = rtnl_route_nh_alloc()))
1137 rtnl_route_nh_set_realms(old_nh,
nla_get_u32(tb[RTA_FLOW]));
1141 rtnl_route_nh_set_flags(old_nh, rtm->rtm_flags & 0xff);
1142 if (route->rt_nr_nh == 0) {
1146 rtnl_route_add_nexthop(route, old_nh);
1150 struct rtnl_nexthop *first;
1152 first = nl_list_first_entry(&route->rt_nexthops,
1153 struct rtnl_nexthop,
1158 if (rtnl_route_nh_compare(old_nh, first,
1159 old_nh->ce_mask, 0)) {
1164 rtnl_route_nh_free(old_nh);
1172 rtnl_route_put(route);
1180 int rtnl_route_build_msg(
struct nl_msg *msg,
struct rtnl_route *route)
1183 struct nlattr *metrics;
1184 struct rtmsg rtmsg = {
1185 .rtm_family = route->rt_family,
1186 .rtm_tos = route->rt_tos,
1187 .rtm_table = route->rt_table,
1188 .rtm_protocol = route->rt_protocol,
1189 .rtm_scope = route->rt_scope,
1190 .rtm_type = route->rt_type,
1191 .rtm_flags = route->rt_flags,
1194 if (route->rt_dst == NULL)
1195 return -NLE_MISSING_ATTR;
1201 if (rtmsg.rtm_scope == RT_SCOPE_NOWHERE)
1204 if (rtnl_route_get_nnexthops(route) == 1) {
1205 struct rtnl_nexthop *nh;
1206 nh = rtnl_route_nexthop_n(route, 0);
1207 rtmsg.rtm_flags |= nh->rtnh_flags;
1210 if (
nlmsg_append(msg, &rtmsg,
sizeof(rtmsg), NLMSG_ALIGNTO) < 0)
1211 goto nla_put_failure;
1221 if (route->ce_mask & ROUTE_ATTR_SRC)
1224 if (route->ce_mask & ROUTE_ATTR_PREF_SRC)
1227 if (route->ce_mask & ROUTE_ATTR_IIF)
1230 if (route->rt_nmetrics > 0) {
1234 if (metrics == NULL)
1235 goto nla_put_failure;
1237 for (i = 1; i <= RTAX_MAX; i++) {
1238 if (!rtnl_route_get_metric(route, i, &val))
1245 if (rtnl_route_get_nnexthops(route) == 1) {
1246 struct rtnl_nexthop *nh;
1248 nh = rtnl_route_nexthop_n(route, 0);
1249 if (nh->rtnh_gateway)
1251 if (nh->rtnh_ifindex)
1253 if (nh->rtnh_realms)
1255 }
else if (rtnl_route_get_nnexthops(route) > 1) {
1256 struct nlattr *multipath;
1257 struct rtnl_nexthop *nh;
1260 goto nla_put_failure;
1262 nl_list_for_each_entry(nh, &route->rt_nexthops, rtnh_list) {
1263 struct rtnexthop *rtnh;
1267 goto nla_put_failure;
1269 rtnh->rtnh_flags = nh->rtnh_flags;
1270 rtnh->rtnh_hops = nh->rtnh_weight;
1271 rtnh->rtnh_ifindex = nh->rtnh_ifindex;
1273 if (nh->rtnh_gateway)
1277 if (nh->rtnh_realms)
1280 rtnh->rtnh_len = nlmsg_tail(msg->nm_nlh) -
1290 return -NLE_MSGSIZE;
1294 struct nl_object_ops route_obj_ops = {
1295 .oo_name =
"route/route",
1296 .oo_size =
sizeof(
struct rtnl_route),
1297 .oo_constructor = route_constructor,
1298 .oo_free_data = route_free_data,
1299 .oo_clone = route_clone,
1305 .oo_compare = route_compare,
1306 .oo_keygen = route_keygen,
1307 .oo_update = route_update,
1308 .oo_attrs2str = route_attrs2str,
1309 .oo_id_attrs = (ROUTE_ATTR_FAMILY | ROUTE_ATTR_TOS |
1310 ROUTE_ATTR_TABLE | ROUTE_ATTR_DST |