Lines Matching +full:use +full:- +full:rtm
1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * FIB front-end.
14 * - respect outgoing interface
15 * - select from (probably) reachable routers (i.e.
17 * - always select the same router if it is (probably)
18 * reachable. otherwise, round-robin the list.
79 RT6_NUD_FAIL_HARD = -3,
80 RT6_NUD_FAIL_PROBE = -2,
81 RT6_NUD_FAIL_DO_RR = -1,
140 rt->rt6i_uncached_list = ul; in rt6_uncached_list_add()
142 spin_lock_bh(&ul->lock); in rt6_uncached_list_add()
143 list_add_tail(&rt->rt6i_uncached, &ul->head); in rt6_uncached_list_add()
144 spin_unlock_bh(&ul->lock); in rt6_uncached_list_add()
149 if (!list_empty(&rt->rt6i_uncached)) { in rt6_uncached_list_del()
150 struct uncached_list *ul = rt->rt6i_uncached_list; in rt6_uncached_list_del()
151 struct net *net = dev_net(rt->dst.dev); in rt6_uncached_list_del()
153 spin_lock_bh(&ul->lock); in rt6_uncached_list_del()
154 list_del(&rt->rt6i_uncached); in rt6_uncached_list_del()
155 atomic_dec(&net->ipv6.rt6_stats->fib_rt_uncache); in rt6_uncached_list_del()
156 spin_unlock_bh(&ul->lock); in rt6_uncached_list_del()
162 struct net_device *loopback_dev = net->loopback_dev; in rt6_uncached_list_flush_dev()
172 spin_lock_bh(&ul->lock); in rt6_uncached_list_flush_dev()
173 list_for_each_entry(rt, &ul->head, rt6i_uncached) { in rt6_uncached_list_flush_dev()
174 struct inet6_dev *rt_idev = rt->rt6i_idev; in rt6_uncached_list_flush_dev()
175 struct net_device *rt_dev = rt->dst.dev; in rt6_uncached_list_flush_dev()
177 if (rt_idev && rt_idev->dev == dev) { in rt6_uncached_list_flush_dev()
178 rt->rt6i_idev = in6_dev_get(loopback_dev); in rt6_uncached_list_flush_dev()
183 rt->dst.dev = blackhole_netdev; in rt6_uncached_list_flush_dev()
184 dev_hold(rt->dst.dev); in rt6_uncached_list_flush_dev()
188 spin_unlock_bh(&ul->lock); in rt6_uncached_list_flush_dev()
199 return &ipv6_hdr(skb)->daddr; in choose_neigh_daddr()
226 dst->dev, skb, daddr); in ip6_dst_neigh_lookup()
231 struct net_device *dev = dst->dev; in ip6_confirm_neigh()
237 if (dev->flags & (IFF_NOARP | IFF_LOOPBACK)) in ip6_confirm_neigh()
276 [RTAX_HOPLIMIT - 1] = 0,
293 .error = -ENETUNREACH,
307 .error = -EACCES,
319 .error = -EINVAL,
330 struct dst_entry *dst = &rt->dst; in rt6_info_init()
332 memset(dst + 1, 0, sizeof(*rt) - sizeof(*dst)); in rt6_info_init()
333 INIT_LIST_HEAD(&rt->rt6i_uncached); in rt6_info_init()
340 struct rt6_info *rt = dst_alloc(&net->ipv6.ip6_dst_ops, dev, in ip6_dst_alloc()
345 atomic_inc(&net->ipv6.rt6_stats->fib_rt_alloc); in ip6_dst_alloc()
361 idev = rt->rt6i_idev; in ip6_dst_destroy()
363 rt->rt6i_idev = NULL; in ip6_dst_destroy()
367 from = xchg((__force struct fib6_info **)&rt->from, NULL); in ip6_dst_destroy()
375 struct inet6_dev *idev = rt->rt6i_idev; in ip6_dst_ifdown()
377 dev_net(dev)->loopback_dev; in ip6_dst_ifdown()
379 if (idev && idev->dev != loopback_dev) { in ip6_dst_ifdown()
382 rt->rt6i_idev = loopback_idev; in ip6_dst_ifdown()
390 if (rt->rt6i_flags & RTF_EXPIRES) in __rt6_check_expired()
391 return time_after(jiffies, rt->dst.expires); in __rt6_check_expired()
400 from = rcu_dereference(rt->from); in rt6_check_expired()
402 if (rt->rt6i_flags & RTF_EXPIRES) { in rt6_check_expired()
403 if (time_after(jiffies, rt->dst.expires)) in rt6_check_expired()
406 return rt->dst.obsolete != DST_OBSOLETE_FORCE_CHK || in rt6_check_expired()
416 struct fib6_info *match = res->f6i; in fib6_select_path()
419 if (!match->nh && (!match->fib6_nsiblings || have_oif_match)) in fib6_select_path()
422 if (match->nh && have_oif_match && res->nh) in fib6_select_path()
426 * case it will always be non-zero. Otherwise now is the time to do it. in fib6_select_path()
428 if (!fl6->mp_hash && in fib6_select_path()
429 (!match->nh || nexthop_is_multipath(match->nh))) in fib6_select_path()
430 fl6->mp_hash = rt6_multipath_hash(net, fl6, skb, NULL); in fib6_select_path()
432 if (unlikely(match->nh)) { in fib6_select_path()
433 nexthop_path_fib6_result(res, fl6->mp_hash); in fib6_select_path()
437 if (fl6->mp_hash <= atomic_read(&match->fib6_nh->fib_nh_upper_bound)) in fib6_select_path()
440 list_for_each_entry_rcu(sibling, &match->fib6_siblings, in fib6_select_path()
442 const struct fib6_nh *nh = sibling->fib6_nh; in fib6_select_path()
445 nh_upper_bound = atomic_read(&nh->fib_nh_upper_bound); in fib6_select_path()
446 if (fl6->mp_hash > nh_upper_bound) in fib6_select_path()
448 if (rt6_score_route(nh, sibling->fib6_flags, oif, strict) < 0) in fib6_select_path()
455 res->f6i = match; in fib6_select_path()
456 res->nh = match->fib6_nh; in fib6_select_path()
468 if (nh->fib_nh_flags & RTNH_F_DEAD) in __rt6_device_match()
471 dev = nh->fib_nh_dev; in __rt6_device_match()
473 if (dev->ifindex == oif) in __rt6_device_match()
496 arg->nh = nh; in __rt6_nh_dev_match()
497 return __rt6_device_match(arg->net, nh, arg->saddr, arg->oif, in __rt6_nh_dev_match()
498 arg->flags); in __rt6_nh_dev_match()
526 struct fib6_info *f6i = res->f6i; in rt6_device_match()
531 if (unlikely(f6i->nh)) { in rt6_device_match()
532 nh = nexthop_fib6_nh(f6i->nh); in rt6_device_match()
533 if (nexthop_is_blackhole(f6i->nh)) in rt6_device_match()
536 nh = f6i->fib6_nh; in rt6_device_match()
538 if (!(nh->fib_nh_flags & RTNH_F_DEAD)) in rt6_device_match()
542 for (spf6i = f6i; spf6i; spf6i = rcu_dereference(spf6i->fib6_next)) { in rt6_device_match()
545 if (unlikely(spf6i->nh)) { in rt6_device_match()
546 nh = rt6_nh_dev_match(net, spf6i->nh, res, saddr, in rt6_device_match()
551 nh = spf6i->fib6_nh; in rt6_device_match()
556 res->f6i = spf6i; in rt6_device_match()
562 res->f6i = net->ipv6.fib6_null_entry; in rt6_device_match()
563 nh = res->f6i->fib6_nh; in rt6_device_match()
567 if (unlikely(f6i->nh)) { in rt6_device_match()
568 nh = nexthop_fib6_nh(f6i->nh); in rt6_device_match()
569 if (nexthop_is_blackhole(f6i->nh)) in rt6_device_match()
572 nh = f6i->fib6_nh; in rt6_device_match()
575 if (nh->fib_nh_flags & RTNH_F_DEAD) { in rt6_device_match()
576 res->f6i = net->ipv6.fib6_null_entry; in rt6_device_match()
577 nh = res->f6i->fib6_nh; in rt6_device_match()
580 res->nh = nh; in rt6_device_match()
581 res->fib6_type = res->f6i->fib6_type; in rt6_device_match()
582 res->fib6_flags = res->f6i->fib6_flags; in rt6_device_match()
586 res->fib6_flags |= RTF_REJECT; in rt6_device_match()
587 res->fib6_type = RTN_BLACKHOLE; in rt6_device_match()
588 res->nh = nh; in rt6_device_match()
604 addrconf_addr_solict_mult(&work->target, &mcaddr); in rt6_probe_deferred()
605 ndisc_send_ns(work->dev, &work->target, &mcaddr, NULL, 0); in rt6_probe_deferred()
606 dev_put(work->dev); in rt6_probe_deferred()
624 * Router Reachability Probe MUST be rate-limited in rt6_probe()
627 if (!fib6_nh->fib_nh_gw_family) in rt6_probe()
630 nh_gw = &fib6_nh->fib_nh_gw6; in rt6_probe()
631 dev = fib6_nh->fib_nh_dev; in rt6_probe()
633 last_probe = READ_ONCE(fib6_nh->last_probe); in rt6_probe()
639 if (neigh->nud_state & NUD_VALID) in rt6_probe()
642 write_lock(&neigh->lock); in rt6_probe()
643 if (!(neigh->nud_state & NUD_VALID) && in rt6_probe()
645 neigh->updated + idev->cnf.rtr_probe_interval)) { in rt6_probe()
650 write_unlock(&neigh->lock); in rt6_probe()
652 idev->cnf.rtr_probe_interval)) { in rt6_probe()
656 if (!work || cmpxchg(&fib6_nh->last_probe, in rt6_probe()
660 INIT_WORK(&work->work, rt6_probe_deferred); in rt6_probe()
661 work->target = *nh_gw; in rt6_probe()
663 work->dev = dev; in rt6_probe()
664 schedule_work(&work->work); in rt6_probe()
685 neigh = __ipv6_neigh_lookup_noref(fib6_nh->fib_nh_dev, in rt6_check_neigh()
686 &fib6_nh->fib_nh_gw6); in rt6_check_neigh()
688 read_lock(&neigh->lock); in rt6_check_neigh()
689 if (neigh->nud_state & NUD_VALID) in rt6_check_neigh()
692 else if (!(neigh->nud_state & NUD_FAILED)) in rt6_check_neigh()
697 read_unlock(&neigh->lock); in rt6_check_neigh()
712 if (!oif || nh->fib_nh_dev->ifindex == oif) in rt6_score_route()
721 !(fib6_flags & RTF_NONEXTHOP) && nh->fib_nh_gw_family) { in rt6_score_route()
736 if (nh->fib_nh_flags & RTNH_F_DEAD) in find_match()
739 if (ip6_ignore_linkdown(nh->fib_nh_dev) && in find_match()
740 nh->fib_nh_flags & RTNH_F_LINKDOWN && in find_match()
778 arg->nh = nh; in rt6_nh_find_match()
779 return find_match(nh, arg->flags, arg->oif, arg->strict, in rt6_nh_find_match()
780 arg->mpri, arg->do_rr); in rt6_nh_find_match()
792 f6i = rcu_dereference(f6i->fib6_next)) { in __find_rr_leaf()
796 if (cont && f6i->fib6_metric != metric) { in __find_rr_leaf()
804 if (unlikely(f6i->nh)) { in __find_rr_leaf()
806 .flags = f6i->fib6_flags, in __find_rr_leaf()
813 if (nexthop_is_blackhole(f6i->nh)) { in __find_rr_leaf()
814 res->fib6_flags = RTF_REJECT; in __find_rr_leaf()
815 res->fib6_type = RTN_BLACKHOLE; in __find_rr_leaf()
816 res->f6i = f6i; in __find_rr_leaf()
817 res->nh = nexthop_fib6_nh(f6i->nh); in __find_rr_leaf()
820 if (nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_find_match, in __find_rr_leaf()
826 nh = f6i->fib6_nh; in __find_rr_leaf()
827 if (find_match(nh, f6i->fib6_flags, oif, strict, in __find_rr_leaf()
832 res->f6i = f6i; in __find_rr_leaf()
833 res->nh = nh; in __find_rr_leaf()
834 res->fib6_flags = f6i->fib6_flags; in __find_rr_leaf()
835 res->fib6_type = f6i->fib6_type; in __find_rr_leaf()
844 u32 metric = rr_head->fib6_metric; in find_rr_leaf()
846 int mpri = -1; in find_rr_leaf()
854 if (res->f6i || !cont) in find_rr_leaf()
864 struct fib6_info *leaf = rcu_dereference(fn->leaf); in rt6_select()
870 res->f6i = NULL; in rt6_select()
872 if (!leaf || leaf == net->ipv6.fib6_null_entry) in rt6_select()
875 rt0 = rcu_dereference(fn->rr_ptr); in rt6_select()
880 * and fn->leaf does not points to its child's leaf in rt6_select()
884 key_plen = rt0->fib6_dst.plen; in rt6_select()
886 if (rt0->fib6_src.plen) in rt6_select()
887 key_plen = rt0->fib6_src.plen; in rt6_select()
889 if (fn->fn_bit != key_plen) in rt6_select()
894 struct fib6_info *next = rcu_dereference(rt0->fib6_next); in rt6_select()
896 /* no entries matched; do round-robin */ in rt6_select()
897 if (!next || next->fib6_metric != rt0->fib6_metric) in rt6_select()
901 spin_lock_bh(&leaf->fib6_table->tb6_lock); in rt6_select()
903 if (next->fib6_node) in rt6_select()
904 rcu_assign_pointer(fn->rr_ptr, next); in rt6_select()
905 spin_unlock_bh(&leaf->fib6_table->tb6_lock); in rt6_select()
910 if (!res->f6i) { in rt6_select()
911 res->f6i = net->ipv6.fib6_null_entry; in rt6_select()
912 res->nh = res->f6i->fib6_nh; in rt6_select()
913 res->fib6_flags = res->f6i->fib6_flags; in rt6_select()
914 res->fib6_type = res->f6i->fib6_type; in rt6_select()
920 return (res->f6i->fib6_flags & RTF_NONEXTHOP) || in rt6_is_gw_or_nonexthop()
921 res->nh->fib_nh_gw_family; in rt6_is_gw_or_nonexthop()
936 return -EINVAL; in rt6_route_rcv()
940 if (rinfo->length > 3) { in rt6_route_rcv()
941 return -EINVAL; in rt6_route_rcv()
942 } else if (rinfo->prefix_len > 128) { in rt6_route_rcv()
943 return -EINVAL; in rt6_route_rcv()
944 } else if (rinfo->prefix_len > 64) { in rt6_route_rcv()
945 if (rinfo->length < 2) { in rt6_route_rcv()
946 return -EINVAL; in rt6_route_rcv()
948 } else if (rinfo->prefix_len > 0) { in rt6_route_rcv()
949 if (rinfo->length < 1) { in rt6_route_rcv()
950 return -EINVAL; in rt6_route_rcv()
954 pref = rinfo->route_pref; in rt6_route_rcv()
956 return -EINVAL; in rt6_route_rcv()
958 lifetime = addrconf_timeout_fixup(ntohl(rinfo->lifetime), HZ); in rt6_route_rcv()
960 if (rinfo->length == 3) in rt6_route_rcv()
961 prefix = (struct in6_addr *)rinfo->prefix; in rt6_route_rcv()
965 (struct in6_addr *)rinfo->prefix, in rt6_route_rcv()
966 rinfo->prefix_len); in rt6_route_rcv()
970 if (rinfo->prefix_len == 0) in rt6_route_rcv()
973 rt = rt6_get_route_info(net, prefix, rinfo->prefix_len, in rt6_route_rcv()
982 rt = rt6_add_route_info(net, prefix, rinfo->prefix_len, gwaddr, in rt6_route_rcv()
985 rt->fib6_flags = RTF_ROUTEINFO | in rt6_route_rcv()
986 (rt->fib6_flags & ~RTF_PREF_MASK) | RTF_PREF(pref); in rt6_route_rcv()
1007 struct net_device *dev = res->nh->fib_nh_dev; in ip6_rt_get_dev_rcu()
1009 if (res->fib6_flags & (RTF_LOCAL | RTF_ANYCAST)) { in ip6_rt_get_dev_rcu()
1010 /* for copies of local routes, dst->dev needs to be the in ip6_rt_get_dev_rcu()
1015 !rt6_need_strict(&res->f6i->fib6_dst.addr)) in ip6_rt_get_dev_rcu()
1018 dev = dev_net(dev)->loopback_dev; in ip6_rt_get_dev_rcu()
1034 [RTN_BLACKHOLE] = -EINVAL,
1035 [RTN_UNREACHABLE] = -EHOSTUNREACH,
1036 [RTN_PROHIBIT] = -EACCES,
1037 [RTN_THROW] = -EAGAIN,
1038 [RTN_NAT] = -EINVAL,
1039 [RTN_XRESOLVE] = -EINVAL,
1051 if (rt->dst_nocount) in fib6_info_dst_flags()
1053 if (rt->dst_nopolicy) in fib6_info_dst_flags()
1061 rt->dst.error = ip6_rt_type_to_error(fib6_type); in ip6_rt_init_dst_reject()
1065 rt->dst.output = dst_discard_out; in ip6_rt_init_dst_reject()
1066 rt->dst.input = dst_discard; in ip6_rt_init_dst_reject()
1069 rt->dst.output = ip6_pkt_prohibit_out; in ip6_rt_init_dst_reject()
1070 rt->dst.input = ip6_pkt_prohibit; in ip6_rt_init_dst_reject()
1075 rt->dst.output = ip6_pkt_discard_out; in ip6_rt_init_dst_reject()
1076 rt->dst.input = ip6_pkt_discard; in ip6_rt_init_dst_reject()
1083 struct fib6_info *f6i = res->f6i; in ip6_rt_init_dst()
1085 if (res->fib6_flags & RTF_REJECT) { in ip6_rt_init_dst()
1086 ip6_rt_init_dst_reject(rt, res->fib6_type); in ip6_rt_init_dst()
1090 rt->dst.error = 0; in ip6_rt_init_dst()
1091 rt->dst.output = ip6_output; in ip6_rt_init_dst()
1093 if (res->fib6_type == RTN_LOCAL || res->fib6_type == RTN_ANYCAST) { in ip6_rt_init_dst()
1094 rt->dst.input = ip6_input; in ip6_rt_init_dst()
1095 } else if (ipv6_addr_type(&f6i->fib6_dst.addr) & IPV6_ADDR_MULTICAST) { in ip6_rt_init_dst()
1096 rt->dst.input = ip6_mc_input; in ip6_rt_init_dst()
1098 rt->dst.input = ip6_forward; in ip6_rt_init_dst()
1101 if (res->nh->fib_nh_lws) { in ip6_rt_init_dst()
1102 rt->dst.lwtstate = lwtstate_get(res->nh->fib_nh_lws); in ip6_rt_init_dst()
1103 lwtunnel_set_redirect(&rt->dst); in ip6_rt_init_dst()
1106 rt->dst.lastuse = jiffies; in ip6_rt_init_dst()
1112 rt->rt6i_flags &= ~RTF_EXPIRES; in rt6_set_from()
1113 rcu_assign_pointer(rt->from, from); in rt6_set_from()
1114 ip_dst_init_metrics(&rt->dst, from->fib6_metrics); in rt6_set_from()
1120 const struct fib6_nh *nh = res->nh; in ip6_rt_copy_init()
1121 const struct net_device *dev = nh->fib_nh_dev; in ip6_rt_copy_init()
1122 struct fib6_info *f6i = res->f6i; in ip6_rt_copy_init()
1126 rt->rt6i_dst = f6i->fib6_dst; in ip6_rt_copy_init()
1127 rt->rt6i_idev = dev ? in6_dev_get(dev) : NULL; in ip6_rt_copy_init()
1128 rt->rt6i_flags = res->fib6_flags; in ip6_rt_copy_init()
1129 if (nh->fib_nh_gw_family) { in ip6_rt_copy_init()
1130 rt->rt6i_gateway = nh->fib_nh_gw6; in ip6_rt_copy_init()
1131 rt->rt6i_flags |= RTF_GATEWAY; in ip6_rt_copy_init()
1135 rt->rt6i_src = f6i->fib6_src; in ip6_rt_copy_init()
1144 if (fn->fn_flags & RTN_TL_ROOT) in fib6_backtrack()
1146 pn = rcu_dereference(fn->parent); in fib6_backtrack()
1152 if (fn->fn_flags & RTN_RTINFO) in fib6_backtrack()
1161 if (dst_hold_safe(&rt->dst)) in ip6_hold_safe()
1164 rt = net->ipv6.ip6_null_entry; in ip6_hold_safe()
1165 dst_hold(&rt->dst); in ip6_hold_safe()
1176 struct net_device *dev = res->nh->fib_nh_dev; in ip6_create_rt_rcu()
1177 struct fib6_info *f6i = res->f6i; in ip6_create_rt_rcu()
1195 nrt = dev_net(dev)->ipv6.ip6_null_entry; in ip6_create_rt_rcu()
1196 dst_hold(&nrt->dst); in ip6_create_rt_rcu()
1210 if (fl6->flowi6_flags & FLOWI_FLAG_SKIP_NH_OIF) in ip6_pol_route_lookup()
1214 fn = fib6_node_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr); in ip6_pol_route_lookup()
1216 res.f6i = rcu_dereference(fn->leaf); in ip6_pol_route_lookup()
1218 res.f6i = net->ipv6.fib6_null_entry; in ip6_pol_route_lookup()
1220 rt6_device_match(net, &res, &fl6->saddr, fl6->flowi6_oif, in ip6_pol_route_lookup()
1223 if (res.f6i == net->ipv6.fib6_null_entry) { in ip6_pol_route_lookup()
1224 fn = fib6_backtrack(fn, &fl6->saddr); in ip6_pol_route_lookup()
1228 rt = net->ipv6.ip6_null_entry; in ip6_pol_route_lookup()
1229 dst_hold(&rt->dst); in ip6_pol_route_lookup()
1235 fib6_select_path(net, &res, fl6, fl6->flowi6_oif, in ip6_pol_route_lookup()
1236 fl6->flowi6_oif != 0, skb, flags); in ip6_pol_route_lookup()
1239 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route_lookup()
1242 dst_use_noref(&rt->dst, jiffies); in ip6_pol_route_lookup()
1280 if (dst->error == 0) in rt6_lookup()
1289 /* ip6_ins_rt is called with FREE table->tb6_lock.
1301 table = rt->fib6_table; in __ip6_ins_rt()
1302 spin_lock_bh(&table->tb6_lock); in __ip6_ins_rt()
1303 err = fib6_add(&table->tb6_root, rt, info, extack); in __ip6_ins_rt()
1304 spin_unlock_bh(&table->tb6_lock); in __ip6_ins_rt()
1320 struct fib6_info *f6i = res->f6i; in ip6_rt_cache_alloc()
1339 rt->rt6i_flags |= RTF_CACHE; in ip6_rt_cache_alloc()
1340 rt->rt6i_dst.addr = *daddr; in ip6_rt_cache_alloc()
1341 rt->rt6i_dst.plen = 128; in ip6_rt_cache_alloc()
1344 if (f6i->fib6_dst.plen != 128 && in ip6_rt_cache_alloc()
1345 ipv6_addr_equal(&f6i->fib6_dst.addr, daddr)) in ip6_rt_cache_alloc()
1346 rt->rt6i_flags |= RTF_ANYCAST; in ip6_rt_cache_alloc()
1348 if (rt->rt6i_src.plen && saddr) { in ip6_rt_cache_alloc()
1349 rt->rt6i_src.addr = *saddr; in ip6_rt_cache_alloc()
1350 rt->rt6i_src.plen = 128; in ip6_rt_cache_alloc()
1360 struct fib6_info *f6i = res->f6i; in ip6_rt_pcpu_alloc()
1377 pcpu_rt->rt6i_flags |= RTF_PCPU; in ip6_rt_pcpu_alloc()
1379 if (f6i->nh) in ip6_rt_pcpu_alloc()
1380 pcpu_rt->sernum = rt_genid_ipv6(dev_net(dev)); in ip6_rt_pcpu_alloc()
1387 return rt6->sernum == rt_genid_ipv6(dev_net(rt6->dst.dev)); in rt6_is_valid()
1395 pcpu_rt = this_cpu_read(*res->nh->rt6i_pcpu); in rt6_get_pcpu_route()
1397 if (pcpu_rt && pcpu_rt->sernum && !rt6_is_valid(pcpu_rt)) { in rt6_get_pcpu_route()
1400 p = this_cpu_ptr(res->nh->rt6i_pcpu); in rt6_get_pcpu_route()
1404 dst_dev_put(&prev->dst); in rt6_get_pcpu_route()
1405 dst_release(&prev->dst); in rt6_get_pcpu_route()
1423 p = this_cpu_ptr(res->nh->rt6i_pcpu); in rt6_make_pcpu_route()
1427 if (res->f6i->fib6_destroying) { in rt6_make_pcpu_route()
1430 from = xchg((__force struct fib6_info **)&pcpu_rt->from, NULL); in rt6_make_pcpu_route()
1453 net = dev_net(rt6_ex->rt6i->dst.dev); in rt6_remove_exception()
1454 net->ipv6.rt6_stats->fib_rt_cache--; in rt6_remove_exception()
1459 from = xchg((__force struct fib6_info **)&rt6_ex->rt6i->from, NULL); in rt6_remove_exception()
1461 dst_dev_put(&rt6_ex->rt6i->dst); in rt6_remove_exception()
1463 hlist_del_rcu(&rt6_ex->hlist); in rt6_remove_exception()
1464 dst_release(&rt6_ex->rt6i->dst); in rt6_remove_exception()
1466 WARN_ON_ONCE(!bucket->depth); in rt6_remove_exception()
1467 bucket->depth--; in rt6_remove_exception()
1480 hlist_for_each_entry(rt6_ex, &bucket->chain, hlist) { in rt6_exception_remove_oldest()
1481 if (!oldest || time_before(rt6_ex->stamp, oldest->stamp)) in rt6_exception_remove_oldest()
1529 hlist_for_each_entry(rt6_ex, &(*bucket)->chain, hlist) { in __rt6_find_exception_spinlock()
1530 struct rt6_info *rt6 = rt6_ex->rt6i; in __rt6_find_exception_spinlock()
1531 bool matched = ipv6_addr_equal(daddr, &rt6->rt6i_dst.addr); in __rt6_find_exception_spinlock()
1535 matched = ipv6_addr_equal(saddr, &rt6->rt6i_src.addr); in __rt6_find_exception_spinlock()
1564 hlist_for_each_entry_rcu(rt6_ex, &(*bucket)->chain, hlist) { in __rt6_find_exception_rcu()
1565 struct rt6_info *rt6 = rt6_ex->rt6i; in __rt6_find_exception_rcu()
1566 bool matched = ipv6_addr_equal(daddr, &rt6->rt6i_dst.addr); in __rt6_find_exception_rcu()
1570 matched = ipv6_addr_equal(saddr, &rt6->rt6i_src.addr); in __rt6_find_exception_rcu()
1580 const struct fib6_nh *nh = res->nh; in fib6_mtu()
1583 if (res->f6i->fib6_pmtu) { in fib6_mtu()
1584 mtu = res->f6i->fib6_pmtu; in fib6_mtu()
1586 struct net_device *dev = nh->fib_nh_dev; in fib6_mtu()
1591 mtu = idev->cnf.mtu6; in fib6_mtu()
1597 return mtu - lwtunnel_headroom(nh->fib_nh_lws, mtu); in fib6_mtu()
1614 bucket = rcu_dereference_protected(nh->rt6i_exception_bucket, in fib6_nh_get_excptn_bucket()
1617 bucket = rcu_dereference(nh->rt6i_exception_bucket); in fib6_nh_get_excptn_bucket()
1644 bucket = rcu_dereference_protected(nh->rt6i_exception_bucket, in fib6_nh_excptn_bucket_set_flushed()
1650 rcu_assign_pointer(nh->rt6i_exception_bucket, bucket); in fib6_nh_excptn_bucket_set_flushed()
1656 struct net *net = dev_net(nrt->dst.dev); in rt6_insert_exception()
1658 struct fib6_info *f6i = res->f6i; in rt6_insert_exception()
1661 struct fib6_nh *nh = res->nh; in rt6_insert_exception()
1667 bucket = rcu_dereference_protected(nh->rt6i_exception_bucket, in rt6_insert_exception()
1673 err = -ENOMEM; in rt6_insert_exception()
1676 rcu_assign_pointer(nh->rt6i_exception_bucket, bucket); in rt6_insert_exception()
1678 err = -EINVAL; in rt6_insert_exception()
1689 if (f6i->fib6_src.plen) in rt6_insert_exception()
1690 src_key = &nrt->rt6i_src.addr; in rt6_insert_exception()
1696 if (dst_metric_raw(&nrt->dst, RTAX_MTU) >= fib6_mtu(res)) { in rt6_insert_exception()
1697 err = -EINVAL; in rt6_insert_exception()
1701 rt6_ex = __rt6_find_exception_spinlock(&bucket, &nrt->rt6i_dst.addr, in rt6_insert_exception()
1708 err = -ENOMEM; in rt6_insert_exception()
1711 rt6_ex->rt6i = nrt; in rt6_insert_exception()
1712 rt6_ex->stamp = jiffies; in rt6_insert_exception()
1713 hlist_add_head_rcu(&rt6_ex->hlist, &bucket->chain); in rt6_insert_exception()
1714 bucket->depth++; in rt6_insert_exception()
1715 net->ipv6.rt6_stats->fib_rt_cache++; in rt6_insert_exception()
1719 while (bucket->depth > max_depth) in rt6_insert_exception()
1725 /* Update fn->fn_sernum to invalidate all cached dst */ in rt6_insert_exception()
1727 spin_lock_bh(&f6i->fib6_table->tb6_lock); in rt6_insert_exception()
1729 spin_unlock_bh(&f6i->fib6_table->tb6_lock); in rt6_insert_exception()
1754 hlist_for_each_entry_safe(rt6_ex, tmp, &bucket->chain, hlist) { in fib6_nh_flush_exceptions()
1756 rcu_access_pointer(rt6_ex->rt6i->from) == from) in fib6_nh_flush_exceptions()
1759 WARN_ON_ONCE(!from && bucket->depth); in fib6_nh_flush_exceptions()
1777 if (f6i->nh) in rt6_flush_exceptions()
1778 nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_flush_exceptions, in rt6_flush_exceptions()
1781 fib6_nh_flush_exceptions(f6i->fib6_nh, f6i); in rt6_flush_exceptions()
1803 * So we need to use f6i->fib6_src to redo lookup in rt6_find_cached_rt()
1806 * rt->rt6i_src is updated.) in rt6_find_cached_rt()
1808 if (res->f6i->fib6_src.plen) in rt6_find_cached_rt()
1812 bucket = fib6_nh_get_excptn_bucket(res->nh, NULL); in rt6_find_cached_rt()
1815 if (rt6_ex && !rt6_check_expired(rt6_ex->rt6i)) in rt6_find_cached_rt()
1816 ret = rt6_ex->rt6i; in rt6_find_cached_rt()
1819 /* Use fib6_src as src_key and redo lookup */ in rt6_find_cached_rt()
1820 if (!ret && src_key && src_key != &res->f6i->fib6_src.addr) { in rt6_find_cached_rt()
1821 src_key = &res->f6i->fib6_src.addr; in rt6_find_cached_rt()
1838 if (!rcu_access_pointer(nh->rt6i_exception_bucket)) in fib6_nh_remove_exception()
1839 return -ENOENT; in fib6_nh_remove_exception()
1852 src_key = &rt->rt6i_src.addr; in fib6_nh_remove_exception()
1855 &rt->rt6i_dst.addr, in fib6_nh_remove_exception()
1861 err = -ENOENT; in fib6_nh_remove_exception()
1878 err = fib6_nh_remove_exception(nh, arg->plen, arg->rt); in rt6_nh_remove_exception_rt()
1889 from = rcu_dereference(rt->from); in rt6_remove_exception_rt()
1890 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_remove_exception_rt()
1891 return -EINVAL; in rt6_remove_exception_rt()
1893 if (from->nh) { in rt6_remove_exception_rt()
1896 .plen = from->fib6_src.plen in rt6_remove_exception_rt()
1901 rc = nexthop_for_each_fib6_nh(from->nh, in rt6_remove_exception_rt()
1904 return rc ? 0 : -ENOENT; in rt6_remove_exception_rt()
1907 return fib6_nh_remove_exception(from->fib6_nh, in rt6_remove_exception_rt()
1908 from->fib6_src.plen, rt); in rt6_remove_exception_rt()
1930 src_key = &rt->rt6i_src.addr; in fib6_nh_update_exception()
1932 rt6_ex = __rt6_find_exception_rcu(&bucket, &rt->rt6i_dst.addr, src_key); in fib6_nh_update_exception()
1934 rt6_ex->stamp = jiffies; in fib6_nh_update_exception()
1948 if (arg->dev != nh->fib_nh_dev || in fib6_nh_find_match()
1949 (arg->gw && !nh->fib_nh_gw_family) || in fib6_nh_find_match()
1950 (!arg->gw && nh->fib_nh_gw_family) || in fib6_nh_find_match()
1951 (arg->gw && !ipv6_addr_equal(arg->gw, &nh->fib_nh_gw6))) in fib6_nh_find_match()
1954 arg->match = nh; in fib6_nh_find_match()
1967 from = rcu_dereference(rt->from); in rt6_update_exception_stamp_rt()
1968 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_update_exception_stamp_rt()
1971 if (from->nh) { in rt6_update_exception_stamp_rt()
1973 .dev = rt->dst.dev, in rt6_update_exception_stamp_rt()
1974 .gw = &rt->rt6i_gateway, in rt6_update_exception_stamp_rt()
1977 nexthop_for_each_fib6_nh(from->nh, fib6_nh_find_match, &arg); in rt6_update_exception_stamp_rt()
1983 fib6_nh = from->fib6_nh; in rt6_update_exception_stamp_rt()
1985 fib6_nh_update_exception(fib6_nh, from->fib6_src.plen, rt); in rt6_update_exception_stamp_rt()
2003 if (dst_mtu(&rt->dst) >= mtu) in rt6_mtu_change_route_allowed()
2006 if (dst_mtu(&rt->dst) == idev->cnf.mtu6) in rt6_mtu_change_route_allowed()
2024 hlist_for_each_entry(rt6_ex, &bucket->chain, hlist) { in rt6_exceptions_update_pmtu()
2025 struct rt6_info *entry = rt6_ex->rt6i; in rt6_exceptions_update_pmtu()
2028 * route), the metrics of its rt->from have already in rt6_exceptions_update_pmtu()
2031 if (dst_metric_raw(&entry->dst, RTAX_MTU) && in rt6_exceptions_update_pmtu()
2033 dst_metric_set(&entry->dst, RTAX_MTU, mtu); in rt6_exceptions_update_pmtu()
2049 if (!rcu_access_pointer(nh->rt6i_exception_bucket)) in fib6_nh_exceptions_clean_tohost()
2057 &bucket->chain, hlist) { in fib6_nh_exceptions_clean_tohost()
2058 struct rt6_info *entry = rt6_ex->rt6i; in fib6_nh_exceptions_clean_tohost()
2060 if ((entry->rt6i_flags & RTF_CACHE_GATEWAY) == in fib6_nh_exceptions_clean_tohost()
2063 &entry->rt6i_gateway)) { in fib6_nh_exceptions_clean_tohost()
2079 struct rt6_info *rt = rt6_ex->rt6i; in rt6_age_examine_exception()
2081 /* we are pruning and obsoleting aged-out and non gateway exceptions in rt6_age_examine_exception()
2084 * EXPIRES exceptions - e.g. pmtu-generated ones are pruned when in rt6_age_examine_exception()
2087 if (!(rt->rt6i_flags & RTF_EXPIRES)) { in rt6_age_examine_exception()
2088 if (time_after_eq(now, rt->dst.lastuse + gc_args->timeout)) { in rt6_age_examine_exception()
2093 } else if (time_after(jiffies, rt->dst.expires)) { in rt6_age_examine_exception()
2099 if (rt->rt6i_flags & RTF_GATEWAY) { in rt6_age_examine_exception()
2103 neigh = __ipv6_neigh_lookup_noref(rt->dst.dev, &rt->rt6i_gateway); in rt6_age_examine_exception()
2105 neigh_flags = neigh->flags; in rt6_age_examine_exception()
2108 RT6_TRACE("purging route %p via non-router but gateway\n", in rt6_age_examine_exception()
2115 gc_args->more++; in rt6_age_examine_exception()
2127 if (!rcu_access_pointer(nh->rt6i_exception_bucket)) in fib6_nh_age_exceptions()
2136 &bucket->chain, hlist) { in fib6_nh_age_exceptions()
2156 fib6_nh_age_exceptions(nh, arg->gc_args, arg->now); in rt6_nh_age_exceptions()
2164 if (f6i->nh) { in rt6_age_exceptions()
2170 nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_age_exceptions, in rt6_age_exceptions()
2173 fib6_nh_age_exceptions(f6i->fib6_nh, gc_args, now); in rt6_age_exceptions()
2183 fn = fib6_node_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr); in fib6_table_lookup()
2186 if (fl6->flowi6_flags & FLOWI_FLAG_SKIP_NH_OIF) in fib6_table_lookup()
2191 if (res->f6i == net->ipv6.fib6_null_entry) { in fib6_table_lookup()
2192 fn = fib6_backtrack(fn, &fl6->saddr); in fib6_table_lookup()
2221 if (net->ipv6.devconf_all->forwarding == 0) in ip6_pol_route()
2227 if (res.f6i == net->ipv6.fib6_null_entry) in ip6_pol_route()
2233 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route()
2236 } else if (unlikely((fl6->flowi6_flags & FLOWI_FLAG_KNOWN_NH) && in ip6_pol_route()
2237 !res.nh->fib_nh_gw_family)) { in ip6_pol_route()
2240 * the daddr in the skb during the neighbor look-up is different in ip6_pol_route()
2241 * from the fl6->daddr used to look-up route here. in ip6_pol_route()
2243 rt = ip6_rt_cache_alloc(&res, &fl6->daddr, NULL); in ip6_pol_route()
2252 atomic_inc(&net->ipv6.rt6_stats->fib_rt_uncache); in ip6_pol_route()
2269 rt = net->ipv6.ip6_null_entry; in ip6_pol_route()
2284 return ip6_pol_route(net, table, fl6->flowi6_iif, fl6, skb, flags); in ip6_pol_route_input()
2293 if (rt6_need_strict(&fl6->daddr) && dev->type != ARPHRD_PIMREG) in ip6_route_input_lookup()
2312 if (likely(outer_iph->nexthdr != IPPROTO_ICMPV6)) in ip6_multipath_l3_keys()
2320 if (!icmpv6_is_err(icmph->icmp6_type)) in ip6_multipath_l3_keys()
2333 keys->addrs.v6addrs.src = _flkeys->addrs.v6addrs.src; in ip6_multipath_l3_keys()
2334 keys->addrs.v6addrs.dst = _flkeys->addrs.v6addrs.dst; in ip6_multipath_l3_keys()
2335 keys->tags.flow_label = _flkeys->tags.flow_label; in ip6_multipath_l3_keys()
2336 keys->basic.ip_proto = _flkeys->basic.ip_proto; in ip6_multipath_l3_keys()
2338 keys->addrs.v6addrs.src = key_iph->saddr; in ip6_multipath_l3_keys()
2339 keys->addrs.v6addrs.dst = key_iph->daddr; in ip6_multipath_l3_keys()
2340 keys->tags.flow_label = ip6_flowlabel(key_iph); in ip6_multipath_l3_keys()
2341 keys->basic.ip_proto = key_iph->nexthdr; in ip6_multipath_l3_keys()
2359 hash_keys.addrs.v6addrs.src = fl6->saddr; in rt6_multipath_hash()
2360 hash_keys.addrs.v6addrs.dst = fl6->daddr; in rt6_multipath_hash()
2362 hash_keys.basic.ip_proto = fl6->flowi6_proto; in rt6_multipath_hash()
2370 /* short-circuit if we already have L4 hash present */ in rt6_multipath_hash()
2371 if (skb->l4_hash) in rt6_multipath_hash()
2381 hash_keys.addrs.v6addrs.src = flkeys->addrs.v6addrs.src; in rt6_multipath_hash()
2382 hash_keys.addrs.v6addrs.dst = flkeys->addrs.v6addrs.dst; in rt6_multipath_hash()
2383 hash_keys.ports.src = flkeys->ports.src; in rt6_multipath_hash()
2384 hash_keys.ports.dst = flkeys->ports.dst; in rt6_multipath_hash()
2385 hash_keys.basic.ip_proto = flkeys->basic.ip_proto; in rt6_multipath_hash()
2389 hash_keys.addrs.v6addrs.src = fl6->saddr; in rt6_multipath_hash()
2390 hash_keys.addrs.v6addrs.dst = fl6->daddr; in rt6_multipath_hash()
2391 hash_keys.ports.src = fl6->fl6_sport; in rt6_multipath_hash()
2392 hash_keys.ports.dst = fl6->fl6_dport; in rt6_multipath_hash()
2393 hash_keys.basic.ip_proto = fl6->flowi6_proto; in rt6_multipath_hash()
2408 if (flkeys->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { in rt6_multipath_hash()
2410 hash_keys.addrs.v4addrs.src = flkeys->addrs.v4addrs.src; in rt6_multipath_hash()
2411 hash_keys.addrs.v4addrs.dst = flkeys->addrs.v4addrs.dst; in rt6_multipath_hash()
2412 } else if (flkeys->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { in rt6_multipath_hash()
2414 hash_keys.addrs.v6addrs.src = flkeys->addrs.v6addrs.src; in rt6_multipath_hash()
2415 hash_keys.addrs.v6addrs.dst = flkeys->addrs.v6addrs.dst; in rt6_multipath_hash()
2416 hash_keys.tags.flow_label = flkeys->tags.flow_label; in rt6_multipath_hash()
2417 hash_keys.basic.ip_proto = flkeys->basic.ip_proto; in rt6_multipath_hash()
2426 hash_keys.addrs.v6addrs.src = fl6->saddr; in rt6_multipath_hash()
2427 hash_keys.addrs.v6addrs.dst = fl6->daddr; in rt6_multipath_hash()
2429 hash_keys.basic.ip_proto = fl6->flowi6_proto; in rt6_multipath_hash()
2442 struct net *net = dev_net(skb->dev); in ip6_route_input()
2446 .flowi6_iif = skb->dev->ifindex, in ip6_route_input()
2447 .daddr = iph->daddr, in ip6_route_input()
2448 .saddr = iph->saddr, in ip6_route_input()
2450 .flowi6_mark = skb->mark, in ip6_route_input()
2451 .flowi6_proto = iph->nexthdr, in ip6_route_input()
2456 if (tun_info && !(tun_info->mode & IP_TUNNEL_INFO_TX)) in ip6_route_input()
2457 fl6.flowi6_tun_key.tun_id = tun_info->key.tun_id; in ip6_route_input()
2465 skb_dst_set_noref(skb, ip6_route_input_lookup(net, skb->dev, in ip6_route_input()
2475 return ip6_pol_route(net, table, fl6->flowi6_oif, fl6, skb, flags); in ip6_pol_route_output()
2484 if (ipv6_addr_type(&fl6->daddr) & in ip6_route_output_flags_noref()
2494 fl6->flowi6_iif = LOOPBACK_IFINDEX; in ip6_route_output_flags_noref()
2497 any_src = ipv6_addr_any(&fl6->saddr); in ip6_route_output_flags_noref()
2498 if ((sk && sk->sk_bound_dev_if) || rt6_need_strict(&fl6->daddr) || in ip6_route_output_flags_noref()
2499 (fl6->flowi6_oif && any_src)) in ip6_route_output_flags_noref()
2505 flags |= rt6_srcprefs2flags(inet6_sk(sk)->srcprefs); in ip6_route_output_flags_noref()
2523 if (list_empty(&rt6->rt6i_uncached) && !dst_hold_safe(dst)) { in ip6_route_output_flags()
2524 dst = &net->ipv6.ip6_null_entry->dst; in ip6_route_output_flags()
2536 struct net_device *loopback_dev = net->loopback_dev; in ip6_blackhole_route()
2543 atomic_inc(&net->ipv6.rt6_stats->fib_rt_alloc); in ip6_blackhole_route()
2545 new = &rt->dst; in ip6_blackhole_route()
2546 new->__use = 1; in ip6_blackhole_route()
2547 new->input = dst_discard; in ip6_blackhole_route()
2548 new->output = dst_discard_out; in ip6_blackhole_route()
2550 dst_copy_metrics(new, &ort->dst); in ip6_blackhole_route()
2552 rt->rt6i_idev = in6_dev_get(loopback_dev); in ip6_blackhole_route()
2553 rt->rt6i_gateway = ort->rt6i_gateway; in ip6_blackhole_route()
2554 rt->rt6i_flags = ort->rt6i_flags & ~RTF_PCPU; in ip6_blackhole_route()
2556 memcpy(&rt->rt6i_dst, &ort->rt6i_dst, sizeof(struct rt6key)); in ip6_blackhole_route()
2558 memcpy(&rt->rt6i_src, &ort->rt6i_src, sizeof(struct rt6key)); in ip6_blackhole_route()
2563 return new ? new : ERR_PTR(-ENOMEM); in ip6_blackhole_route()
2596 return &rt->dst; in rt6_check()
2604 rt->dst.obsolete == DST_OBSOLETE_FORCE_CHK && in rt6_dst_from_check()
2606 return &rt->dst; in rt6_dst_from_check()
2619 if (rt->sernum) in ip6_dst_check()
2624 /* All IPV6 dsts are created with ->obsolete set to the value in ip6_dst_check()
2629 from = rcu_dereference(rt->from); in ip6_dst_check()
2631 if (from && (rt->rt6i_flags & RTF_PCPU || in ip6_dst_check()
2632 unlikely(!list_empty(&rt->rt6i_uncached)))) in ip6_dst_check()
2647 if (rt->rt6i_flags & RTF_CACHE) { in ip6_negative_advice()
2671 if (rt->rt6i_flags & RTF_CACHE) { in ip6_link_failure()
2677 from = rcu_dereference(rt->from); in ip6_link_failure()
2679 fn = rcu_dereference(from->fib6_node); in ip6_link_failure()
2680 if (fn && (rt->rt6i_flags & RTF_DEFAULT)) in ip6_link_failure()
2681 WRITE_ONCE(fn->fn_sernum, -1); in ip6_link_failure()
2690 if (!(rt0->rt6i_flags & RTF_EXPIRES)) { in rt6_update_expires()
2694 from = rcu_dereference(rt0->from); in rt6_update_expires()
2696 rt0->dst.expires = from->expires; in rt6_update_expires()
2700 dst_set_expires(&rt0->dst, timeout); in rt6_update_expires()
2701 rt0->rt6i_flags |= RTF_EXPIRES; in rt6_update_expires()
2706 struct net *net = dev_net(rt->dst.dev); in rt6_do_update_pmtu()
2708 dst_metric_set(&rt->dst, RTAX_MTU, mtu); in rt6_do_update_pmtu()
2709 rt->rt6i_flags |= RTF_MODIFIED; in rt6_do_update_pmtu()
2710 rt6_update_expires(rt, net->ipv6.sysctl.ip6_rt_mtu_expires); in rt6_do_update_pmtu()
2715 return !(rt->rt6i_flags & RTF_CACHE) && in rt6_cache_allowed_for_pmtu()
2716 (rt->rt6i_flags & RTF_PCPU || rcu_access_pointer(rt->from)); in rt6_cache_allowed_for_pmtu()
2732 daddr = &iph->daddr; in __ip6_rt_update_pmtu()
2733 saddr = &iph->saddr; in __ip6_rt_update_pmtu()
2735 daddr = &sk->sk_v6_daddr; in __ip6_rt_update_pmtu()
2736 saddr = &inet6_sk(sk)->saddr; in __ip6_rt_update_pmtu()
2752 /* update rt6_ex->stamp for cache */ in __ip6_rt_update_pmtu()
2753 if (rt6->rt6i_flags & RTF_CACHE) in __ip6_rt_update_pmtu()
2760 res.f6i = rcu_dereference(rt6->from); in __ip6_rt_update_pmtu()
2764 res.fib6_flags = res.f6i->fib6_flags; in __ip6_rt_update_pmtu()
2765 res.fib6_type = res.f6i->fib6_type; in __ip6_rt_update_pmtu()
2767 if (res.f6i->nh) { in __ip6_rt_update_pmtu()
2769 .dev = dst->dev, in __ip6_rt_update_pmtu()
2770 .gw = &rt6->rt6i_gateway, in __ip6_rt_update_pmtu()
2773 nexthop_for_each_fib6_nh(res.f6i->nh, in __ip6_rt_update_pmtu()
2777 * using the dst->dev + gw. Should be impossible. in __ip6_rt_update_pmtu()
2784 res.nh = res.f6i->fib6_nh; in __ip6_rt_update_pmtu()
2791 dst_release_immediate(&nrt6->dst); in __ip6_rt_update_pmtu()
2809 const struct ipv6hdr *iph = (struct ipv6hdr *) skb->data; in ip6_update_pmtu()
2813 .flowi6_mark = mark ? mark : IP6_REPLY_MARK(net, skb->mark), in ip6_update_pmtu()
2814 .daddr = iph->daddr, in ip6_update_pmtu()
2815 .saddr = iph->saddr, in ip6_update_pmtu()
2821 if (!dst->error) in ip6_update_pmtu()
2829 int oif = sk->sk_bound_dev_if; in ip6_sk_update_pmtu()
2832 if (!oif && skb->dev) in ip6_sk_update_pmtu()
2833 oif = l3mdev_master_ifindex(skb->dev); in ip6_sk_update_pmtu()
2835 ip6_update_pmtu(skb, sock_net(sk), mtu, oif, sk->sk_mark, sk->sk_uid); in ip6_sk_update_pmtu()
2838 if (!dst || !dst->obsolete || in ip6_sk_update_pmtu()
2839 dst->ops->check(dst, inet6_sk(sk)->dst_cookie)) in ip6_sk_update_pmtu()
2843 if (!sock_owned_by_user(sk) && !ipv6_addr_v4mapped(&sk->sk_v6_daddr)) in ip6_sk_update_pmtu()
2857 ipv6_addr_equal(&fl6->daddr, &sk->sk_v6_daddr) ? in ip6_sk_dst_store_flow()
2858 &sk->sk_v6_daddr : NULL, in ip6_sk_dst_store_flow()
2860 ipv6_addr_equal(&fl6->saddr, &np->saddr) ? in ip6_sk_dst_store_flow()
2861 &np->saddr : in ip6_sk_dst_store_flow()
2871 const struct fib6_nh *nh = res->nh; in ip6_redirect_nh_match()
2873 if (nh->fib_nh_flags & RTNH_F_DEAD || !nh->fib_nh_gw_family || in ip6_redirect_nh_match()
2874 fl6->flowi6_oif != nh->fib_nh_dev->ifindex) in ip6_redirect_nh_match()
2882 if (!ipv6_addr_equal(gw, &nh->fib_nh_gw6)) { in ip6_redirect_nh_match()
2885 rt_cache = rt6_find_cached_rt(res, &fl6->daddr, &fl6->saddr); in ip6_redirect_nh_match()
2887 ipv6_addr_equal(gw, &rt_cache->rt6i_gateway)) { in ip6_redirect_nh_match()
2907 arg->res->nh = nh; in fib6_nh_redirect_match()
2908 return ip6_redirect_nh_match(arg->res, arg->fl6, arg->gw, arg->ret); in fib6_nh_redirect_match()
2929 .gw = &rdfl->gateway, in __ip6_route_redirect()
2938 if (fl6->flowi6_flags & FLOWI_FLAG_SKIP_NH_OIF) in __ip6_route_redirect()
2939 fl6->flowi6_oif = skb->dev->ifindex; in __ip6_route_redirect()
2952 fn = fib6_node_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr); in __ip6_route_redirect()
2958 if (rt->fib6_flags & RTF_REJECT) in __ip6_route_redirect()
2960 if (unlikely(rt->nh)) { in __ip6_route_redirect()
2961 if (nexthop_is_blackhole(rt->nh)) in __ip6_route_redirect()
2963 /* on match, res->nh is filled in and potentially ret */ in __ip6_route_redirect()
2964 if (nexthop_for_each_fib6_nh(rt->nh, in __ip6_route_redirect()
2969 res.nh = rt->fib6_nh; in __ip6_route_redirect()
2970 if (ip6_redirect_nh_match(&res, fl6, &rdfl->gateway, in __ip6_route_redirect()
2977 rt = net->ipv6.fib6_null_entry; in __ip6_route_redirect()
2978 else if (rt->fib6_flags & RTF_REJECT) { in __ip6_route_redirect()
2979 ret = net->ipv6.ip6_null_entry; in __ip6_route_redirect()
2983 if (rt == net->ipv6.fib6_null_entry) { in __ip6_route_redirect()
2984 fn = fib6_backtrack(fn, &fl6->saddr); in __ip6_route_redirect()
2990 res.nh = rt->fib6_nh; in __ip6_route_redirect()
2995 res.fib6_flags = res.f6i->fib6_flags; in __ip6_route_redirect()
2996 res.fib6_type = res.f6i->fib6_type; in __ip6_route_redirect()
3024 const struct ipv6hdr *iph = (struct ipv6hdr *) skb->data; in ip6_redirect()
3030 .daddr = iph->daddr, in ip6_redirect()
3031 .saddr = iph->saddr, in ip6_redirect()
3036 dst = ip6_route_redirect(net, &fl6, skb, &ipv6_hdr(skb)->saddr); in ip6_redirect()
3050 .daddr = msg->dest, in ip6_redirect_no_header()
3051 .saddr = iph->daddr, in ip6_redirect_no_header()
3055 dst = ip6_route_redirect(net, &fl6, skb, &iph->saddr); in ip6_redirect_no_header()
3062 ip6_redirect(skb, sock_net(sk), sk->sk_bound_dev_if, sk->sk_mark, in ip6_sk_redirect()
3063 sk->sk_uid); in ip6_sk_redirect()
3069 struct net_device *dev = dst->dev; in ip6_default_advmss()
3073 mtu -= sizeof(struct ipv6hdr) + sizeof(struct tcphdr); in ip6_default_advmss()
3075 if (mtu < net->ipv6.sysctl.ip6_rt_min_advmss) in ip6_default_advmss()
3076 mtu = net->ipv6.sysctl.ip6_rt_min_advmss; in ip6_default_advmss()
3079 * Maximal non-jumbo IPv6 payload is IPV6_MAXPLEN and in ip6_default_advmss()
3080 * corresponding MSS is IPV6_MAXPLEN - tcp_header_size. in ip6_default_advmss()
3084 if (mtu > IPV6_MAXPLEN - sizeof(struct tcphdr)) in ip6_default_advmss()
3101 idev = __in6_dev_get(dst->dev); in ip6_mtu()
3103 mtu = idev->cnf.mtu6; in ip6_mtu()
3109 return mtu - lwtunnel_headroom(dst->lwtstate, mtu); in ip6_mtu()
3113 * 1. mtu on route is locked - use it
3124 const struct fib6_nh *nh = res->nh; in ip6_mtu_from_fib6()
3125 struct fib6_info *f6i = res->f6i; in ip6_mtu_from_fib6()
3131 mtu = f6i->fib6_pmtu; in ip6_mtu_from_fib6()
3138 mtu = dst_metric_raw(&rt->dst, RTAX_MTU); in ip6_mtu_from_fib6()
3140 struct net_device *dev = nh->fib_nh_dev; in ip6_mtu_from_fib6()
3144 if (idev && idev->cnf.mtu6 > mtu) in ip6_mtu_from_fib6()
3145 mtu = idev->cnf.mtu6; in ip6_mtu_from_fib6()
3150 return mtu - lwtunnel_headroom(nh->fib_nh_lws, mtu); in ip6_mtu_from_fib6()
3162 return ERR_PTR(-ENODEV); in icmp6_dst_alloc()
3167 dst = ERR_PTR(-ENOMEM); in icmp6_dst_alloc()
3171 rt->dst.input = ip6_input; in icmp6_dst_alloc()
3172 rt->dst.output = ip6_output; in icmp6_dst_alloc()
3173 rt->rt6i_gateway = fl6->daddr; in icmp6_dst_alloc()
3174 rt->rt6i_dst.addr = fl6->daddr; in icmp6_dst_alloc()
3175 rt->rt6i_dst.plen = 128; in icmp6_dst_alloc()
3176 rt->rt6i_idev = idev; in icmp6_dst_alloc()
3177 dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 0); in icmp6_dst_alloc()
3183 atomic_inc(&net->ipv6.rt6_stats->fib_rt_uncache); in icmp6_dst_alloc()
3185 dst = xfrm_lookup(net, &rt->dst, flowi6_to_flowi(fl6), NULL, 0); in icmp6_dst_alloc()
3194 int rt_min_interval = net->ipv6.sysctl.ip6_rt_gc_min_interval; in ip6_dst_gc()
3195 int rt_elasticity = net->ipv6.sysctl.ip6_rt_gc_elasticity; in ip6_dst_gc()
3196 int rt_gc_timeout = net->ipv6.sysctl.ip6_rt_gc_timeout; in ip6_dst_gc()
3197 unsigned long rt_last_gc = net->ipv6.ip6_rt_last_gc; in ip6_dst_gc()
3202 if (entries > ops->gc_thresh) in ip6_dst_gc()
3208 fib6_run_gc(atomic_inc_return(&net->ipv6.ip6_rt_gc_expire), net, true); in ip6_dst_gc()
3210 if (entries < ops->gc_thresh) in ip6_dst_gc()
3211 atomic_set(&net->ipv6.ip6_rt_gc_expire, rt_gc_timeout >> 1); in ip6_dst_gc()
3213 val = atomic_read(&net->ipv6.ip6_rt_gc_expire); in ip6_dst_gc()
3214 atomic_set(&net->ipv6.ip6_rt_gc_expire, val - (val >> rt_elasticity)); in ip6_dst_gc()
3222 .flowi6_oif = cfg->fc_ifindex, in ip6_nh_lookup_table()
3224 .saddr = cfg->fc_prefsrc, in ip6_nh_lookup_table()
3231 return -EINVAL; in ip6_nh_lookup_table()
3233 if (!ipv6_addr_any(&cfg->fc_prefsrc)) in ip6_nh_lookup_table()
3238 err = fib6_table_lookup(net, table, cfg->fc_ifindex, &fl6, res, flags); in ip6_nh_lookup_table()
3239 if (!err && res->f6i != net->ipv6.fib6_null_entry) in ip6_nh_lookup_table()
3240 fib6_select_path(net, res, &fl6, cfg->fc_ifindex, in ip6_nh_lookup_table()
3241 cfg->fc_ifindex != 0, NULL, flags); in ip6_nh_lookup_table()
3252 const struct in6_addr *gw_addr = &cfg->fc_gateway; in ip6_route_check_nh_onlink()
3259 !ipv6_addr_any(&res.f6i->fib6_dst.addr) && in ip6_route_check_nh_onlink()
3260 (res.fib6_type != RTN_UNICAST || dev != res.nh->fib_nh_dev)) { in ip6_route_check_nh_onlink()
3263 err = -EINVAL; in ip6_route_check_nh_onlink()
3274 const struct in6_addr *gw_addr = &cfg->fc_gateway; in ip6_route_check_nh()
3278 int err = -EHOSTUNREACH; in ip6_route_check_nh()
3280 if (cfg->fc_table) { in ip6_route_check_nh()
3282 cfg->fc_table, flags, &res); in ip6_route_check_nh()
3287 res.nh->fib_nh_gw_family || in ip6_route_check_nh()
3288 (dev && dev != res.nh->fib_nh_dev)) in ip6_route_check_nh()
3289 err = -EHOSTUNREACH; in ip6_route_check_nh()
3294 .flowi6_oif = cfg->fc_ifindex, in ip6_route_check_nh()
3298 err = fib6_lookup(net, cfg->fc_ifindex, &fl6, &res, flags); in ip6_route_check_nh()
3300 res.nh->fib_nh_gw_family) in ip6_route_check_nh()
3301 err = -EHOSTUNREACH; in ip6_route_check_nh()
3306 fib6_select_path(net, &res, &fl6, cfg->fc_ifindex, in ip6_route_check_nh()
3307 cfg->fc_ifindex != 0, NULL, flags); in ip6_route_check_nh()
3312 if (dev != res.nh->fib_nh_dev) in ip6_route_check_nh()
3313 err = -EHOSTUNREACH; in ip6_route_check_nh()
3315 *_dev = dev = res.nh->fib_nh_dev; in ip6_route_check_nh()
3327 const struct in6_addr *gw_addr = &cfg->fc_gateway; in ip6_validate_gw()
3332 int err = -EINVAL; in ip6_validate_gw()
3336 * will return already-added prefix route via interface that in ip6_validate_gw()
3337 * prefix route was assigned to, which might be non-loopback. in ip6_validate_gw()
3346 /* IPv6 strictly inhibits using not link-local in ip6_validate_gw()
3351 * some exceptions. --ANK in ip6_validate_gw()
3352 * We allow IPv4-mapped nexthops to support RFC4798-type in ip6_validate_gw()
3362 if (cfg->fc_flags & RTNH_F_ONLINK) in ip6_validate_gw()
3376 err = -EINVAL; in ip6_validate_gw()
3380 } else if (dev->flags & IFF_LOOPBACK) { in ip6_validate_gw()
3403 (dev && (dev->flags & IFF_LOOPBACK) && in fib6_is_reject()
3420 fib6_nh->fib_nh_family = AF_INET6; in fib6_nh_init()
3422 fib6_nh->last_probe = jiffies; in fib6_nh_init()
3424 if (cfg->fc_is_fdb) { in fib6_nh_init()
3425 fib6_nh->fib_nh_gw6 = cfg->fc_gateway; in fib6_nh_init()
3426 fib6_nh->fib_nh_gw_family = AF_INET6; in fib6_nh_init()
3430 err = -ENODEV; in fib6_nh_init()
3431 if (cfg->fc_ifindex) { in fib6_nh_init()
3432 dev = dev_get_by_index(net, cfg->fc_ifindex); in fib6_nh_init()
3440 if (cfg->fc_flags & RTNH_F_ONLINK) { in fib6_nh_init()
3447 if (!(dev->flags & IFF_UP)) { in fib6_nh_init()
3449 err = -ENETDOWN; in fib6_nh_init()
3453 fib6_nh->fib_nh_flags |= RTNH_F_ONLINK; in fib6_nh_init()
3456 fib6_nh->fib_nh_weight = 1; in fib6_nh_init()
3461 addr_type = ipv6_addr_type(&cfg->fc_dst); in fib6_nh_init()
3462 if (fib6_is_reject(cfg->fc_flags, dev, addr_type)) { in fib6_nh_init()
3464 if (dev != net->loopback_dev) { in fib6_nh_init()
3469 dev = net->loopback_dev; in fib6_nh_init()
3473 err = -ENODEV; in fib6_nh_init()
3480 if (cfg->fc_flags & RTF_GATEWAY) { in fib6_nh_init()
3485 fib6_nh->fib_nh_gw6 = cfg->fc_gateway; in fib6_nh_init()
3486 fib6_nh->fib_nh_gw_family = AF_INET6; in fib6_nh_init()
3489 err = -ENODEV; in fib6_nh_init()
3493 if (!idev || idev->cnf.disable_ipv6) { in fib6_nh_init()
3495 err = -EACCES; in fib6_nh_init()
3499 if (!(dev->flags & IFF_UP) && !cfg->fc_ignore_dev_down) { in fib6_nh_init()
3501 err = -ENETDOWN; in fib6_nh_init()
3505 if (!(cfg->fc_flags & (RTF_LOCAL | RTF_ANYCAST)) && in fib6_nh_init()
3507 fib6_nh->fib_nh_flags |= RTNH_F_LINKDOWN; in fib6_nh_init()
3509 err = fib_nh_common_init(net, &fib6_nh->nh_common, cfg->fc_encap, in fib6_nh_init()
3510 cfg->fc_encap_type, cfg, gfp_flags, extack); in fib6_nh_init()
3515 fib6_nh->rt6i_pcpu = alloc_percpu_gfp(struct rt6_info *, gfp_flags); in fib6_nh_init()
3516 if (!fib6_nh->rt6i_pcpu) { in fib6_nh_init()
3517 err = -ENOMEM; in fib6_nh_init()
3521 fib6_nh->fib_nh_dev = dev; in fib6_nh_init()
3522 fib6_nh->fib_nh_oif = dev->ifindex; in fib6_nh_init()
3529 lwtstate_put(fib6_nh->fib_nh_lws); in fib6_nh_init()
3530 fib6_nh->fib_nh_lws = NULL; in fib6_nh_init()
3547 rcu_assign_pointer(fib6_nh->rt6i_exception_bucket, NULL); in fib6_nh_release()
3553 if (fib6_nh->rt6i_pcpu) { in fib6_nh_release()
3560 ppcpu_rt = per_cpu_ptr(fib6_nh->rt6i_pcpu, cpu); in fib6_nh_release()
3563 dst_dev_put(&pcpu_rt->dst); in fib6_nh_release()
3564 dst_release(&pcpu_rt->dst); in fib6_nh_release()
3569 free_percpu(fib6_nh->rt6i_pcpu); in fib6_nh_release()
3572 fib_nh_common_release(&fib6_nh->nh_common); in fib6_nh_release()
3579 if (!fib6_nh->rt6i_pcpu) in fib6_nh_release_dsts()
3585 ppcpu_rt = per_cpu_ptr(fib6_nh->rt6i_pcpu, cpu); in fib6_nh_release_dsts()
3588 dst_dev_put(&pcpu_rt->dst); in fib6_nh_release_dsts()
3589 dst_release(&pcpu_rt->dst); in fib6_nh_release_dsts()
3598 struct net *net = cfg->fc_nlinfo.nl_net; in ip6_route_info_create()
3603 int err = -EINVAL; in ip6_route_info_create()
3607 if (cfg->fc_flags & RTF_PCPU) { in ip6_route_info_create()
3613 if (cfg->fc_flags & RTF_CACHE) { in ip6_route_info_create()
3618 if (cfg->fc_type > RTN_MAX) { in ip6_route_info_create()
3623 if (cfg->fc_dst_len > 128) { in ip6_route_info_create()
3627 if (cfg->fc_src_len > 128) { in ip6_route_info_create()
3632 if (cfg->fc_src_len) { in ip6_route_info_create()
3638 if (cfg->fc_nh_id) { in ip6_route_info_create()
3639 nh = nexthop_find_by_id(net, cfg->fc_nh_id); in ip6_route_info_create()
3649 err = -ENOBUFS; in ip6_route_info_create()
3650 if (cfg->fc_nlinfo.nlh && in ip6_route_info_create()
3651 !(cfg->fc_nlinfo.nlh->nlmsg_flags & NLM_F_CREATE)) { in ip6_route_info_create()
3652 table = fib6_get_table(net, cfg->fc_table); in ip6_route_info_create()
3655 table = fib6_new_table(net, cfg->fc_table); in ip6_route_info_create()
3658 table = fib6_new_table(net, cfg->fc_table); in ip6_route_info_create()
3664 err = -ENOMEM; in ip6_route_info_create()
3669 rt->fib6_metrics = ip_fib_metrics_init(net, cfg->fc_mx, cfg->fc_mx_len, in ip6_route_info_create()
3671 if (IS_ERR(rt->fib6_metrics)) { in ip6_route_info_create()
3672 err = PTR_ERR(rt->fib6_metrics); in ip6_route_info_create()
3674 rt->fib6_metrics = (struct dst_metrics *)&dst_default_metrics; in ip6_route_info_create()
3678 if (cfg->fc_flags & RTF_ADDRCONF) in ip6_route_info_create()
3679 rt->dst_nocount = true; in ip6_route_info_create()
3681 if (cfg->fc_flags & RTF_EXPIRES) in ip6_route_info_create()
3683 clock_t_to_jiffies(cfg->fc_expires)); in ip6_route_info_create()
3687 if (cfg->fc_protocol == RTPROT_UNSPEC) in ip6_route_info_create()
3688 cfg->fc_protocol = RTPROT_BOOT; in ip6_route_info_create()
3689 rt->fib6_protocol = cfg->fc_protocol; in ip6_route_info_create()
3691 rt->fib6_table = table; in ip6_route_info_create()
3692 rt->fib6_metric = cfg->fc_metric; in ip6_route_info_create()
3693 rt->fib6_type = cfg->fc_type ? : RTN_UNICAST; in ip6_route_info_create()
3694 rt->fib6_flags = cfg->fc_flags & ~RTF_GATEWAY; in ip6_route_info_create()
3696 ipv6_addr_prefix(&rt->fib6_dst.addr, &cfg->fc_dst, cfg->fc_dst_len); in ip6_route_info_create()
3697 rt->fib6_dst.plen = cfg->fc_dst_len; in ip6_route_info_create()
3700 ipv6_addr_prefix(&rt->fib6_src.addr, &cfg->fc_src, cfg->fc_src_len); in ip6_route_info_create()
3701 rt->fib6_src.plen = cfg->fc_src_len; in ip6_route_info_create()
3704 if (rt->fib6_src.plen) { in ip6_route_info_create()
3712 rt->nh = nh; in ip6_route_info_create()
3713 fib6_nh = nexthop_fib6_nh(rt->nh); in ip6_route_info_create()
3715 err = fib6_nh_init(net, rt->fib6_nh, cfg, gfp_flags, extack); in ip6_route_info_create()
3719 fib6_nh = rt->fib6_nh; in ip6_route_info_create()
3724 addr_type = ipv6_addr_type(&cfg->fc_dst); in ip6_route_info_create()
3725 if (fib6_is_reject(cfg->fc_flags, rt->fib6_nh->fib_nh_dev, in ip6_route_info_create()
3727 rt->fib6_flags = RTF_REJECT | RTF_NONEXTHOP; in ip6_route_info_create()
3730 if (!ipv6_addr_any(&cfg->fc_prefsrc)) { in ip6_route_info_create()
3731 struct net_device *dev = fib6_nh->fib_nh_dev; in ip6_route_info_create()
3733 if (!ipv6_chk_addr(net, &cfg->fc_prefsrc, dev, 0)) { in ip6_route_info_create()
3735 err = -EINVAL; in ip6_route_info_create()
3738 rt->fib6_prefsrc.addr = cfg->fc_prefsrc; in ip6_route_info_create()
3739 rt->fib6_prefsrc.plen = 128; in ip6_route_info_create()
3741 rt->fib6_prefsrc.plen = 0; in ip6_route_info_create()
3748 ip_fib_metrics_put(rt->fib6_metrics); in ip6_route_info_create()
3763 err = __ip6_ins_rt(rt, &cfg->fc_nlinfo, extack); in ip6_route_add()
3771 struct net *net = info->nl_net; in __ip6_del_rt()
3775 if (rt == net->ipv6.fib6_null_entry) { in __ip6_del_rt()
3776 err = -ENOENT; in __ip6_del_rt()
3780 table = rt->fib6_table; in __ip6_del_rt()
3781 spin_lock_bh(&table->tb6_lock); in __ip6_del_rt()
3783 spin_unlock_bh(&table->tb6_lock); in __ip6_del_rt()
3802 struct nl_info *info = &cfg->fc_nlinfo; in __ip6_del_rt_siblings()
3803 struct net *net = info->nl_net; in __ip6_del_rt_siblings()
3806 int err = -ENOENT; in __ip6_del_rt_siblings()
3808 if (rt == net->ipv6.fib6_null_entry) in __ip6_del_rt_siblings()
3810 table = rt->fib6_table; in __ip6_del_rt_siblings()
3811 spin_lock_bh(&table->tb6_lock); in __ip6_del_rt_siblings()
3813 if (rt->fib6_nsiblings && cfg->fc_delete_all_nh) { in __ip6_del_rt_siblings()
3820 u32 seq = info->nlh ? info->nlh->nlmsg_seq : 0; in __ip6_del_rt_siblings()
3824 info->portid, seq, 0) < 0) { in __ip6_del_rt_siblings()
3828 info->skip_notify = 1; in __ip6_del_rt_siblings()
3836 info->skip_notify_kernel = 1; in __ip6_del_rt_siblings()
3837 fn = rcu_dereference_protected(rt->fib6_node, in __ip6_del_rt_siblings()
3838 lockdep_is_held(&table->tb6_lock)); in __ip6_del_rt_siblings()
3839 if (rcu_access_pointer(fn->leaf) == rt) { in __ip6_del_rt_siblings()
3842 last_sibling = list_last_entry(&rt->fib6_siblings, in __ip6_del_rt_siblings()
3846 last_sibling->fib6_next, in __ip6_del_rt_siblings()
3847 lockdep_is_held(&table->tb6_lock)); in __ip6_del_rt_siblings()
3854 rt, rt->fib6_nsiblings, in __ip6_del_rt_siblings()
3858 &rt->fib6_siblings, in __ip6_del_rt_siblings()
3868 spin_unlock_bh(&table->tb6_lock); in __ip6_del_rt_siblings()
3873 rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, in __ip6_del_rt_siblings()
3874 info->nlh, gfp_any()); in __ip6_del_rt_siblings()
3881 int rc = -ESRCH; in __ip6_del_cached_rt()
3883 if (cfg->fc_ifindex && rt->dst.dev->ifindex != cfg->fc_ifindex) in __ip6_del_cached_rt()
3886 if (cfg->fc_flags & RTF_GATEWAY && in __ip6_del_cached_rt()
3887 !ipv6_addr_equal(&cfg->fc_gateway, &rt->rt6i_gateway)) in __ip6_del_cached_rt()
3904 rt_cache = rt6_find_cached_rt(&res, &cfg->fc_dst, &cfg->fc_src); in ip6_del_cached_rt()
3921 rc = ip6_del_cached_rt(arg->cfg, arg->f6i, nh); in fib6_nh_del_cached_rt()
3922 return rc != -ESRCH ? rc : 0; in fib6_nh_del_cached_rt()
3932 return nexthop_for_each_fib6_nh(f6i->nh, fib6_nh_del_cached_rt, &arg); in ip6_del_cached_rt_nh()
3941 int err = -ESRCH; in ip6_route_del()
3943 table = fib6_get_table(cfg->fc_nlinfo.nl_net, cfg->fc_table); in ip6_route_del()
3951 fn = fib6_locate(&table->tb6_root, in ip6_route_del()
3952 &cfg->fc_dst, cfg->fc_dst_len, in ip6_route_del()
3953 &cfg->fc_src, cfg->fc_src_len, in ip6_route_del()
3954 !(cfg->fc_flags & RTF_CACHE)); in ip6_route_del()
3960 if (rt->nh && cfg->fc_nh_id && in ip6_route_del()
3961 rt->nh->id != cfg->fc_nh_id) in ip6_route_del()
3964 if (cfg->fc_flags & RTF_CACHE) { in ip6_route_del()
3967 if (rt->nh) { in ip6_route_del()
3969 } else if (cfg->fc_nh_id) { in ip6_route_del()
3972 nh = rt->fib6_nh; in ip6_route_del()
3975 if (rc != -ESRCH) { in ip6_route_del()
3982 if (cfg->fc_metric && cfg->fc_metric != rt->fib6_metric) in ip6_route_del()
3984 if (cfg->fc_protocol && in ip6_route_del()
3985 cfg->fc_protocol != rt->fib6_protocol) in ip6_route_del()
3988 if (rt->nh) { in ip6_route_del()
3993 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
3995 if (cfg->fc_nh_id) in ip6_route_del()
3998 nh = rt->fib6_nh; in ip6_route_del()
3999 if (cfg->fc_ifindex && in ip6_route_del()
4000 (!nh->fib_nh_dev || in ip6_route_del()
4001 nh->fib_nh_dev->ifindex != cfg->fc_ifindex)) in ip6_route_del()
4003 if (cfg->fc_flags & RTF_GATEWAY && in ip6_route_del()
4004 !ipv6_addr_equal(&cfg->fc_gateway, &nh->fib_nh_gw6)) in ip6_route_del()
4011 if (cfg->fc_flags & RTF_GATEWAY) in ip6_route_del()
4012 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
4034 optlen = skb_tail_pointer(skb) - skb_transport_header(skb); in rt6_do_redirect()
4035 optlen -= sizeof(*msg); in rt6_do_redirect()
4044 if (ipv6_addr_is_multicast(&msg->dest)) { in rt6_do_redirect()
4050 if (ipv6_addr_equal(&msg->dest, &msg->target)) { in rt6_do_redirect()
4052 } else if (ipv6_addr_type(&msg->target) != in rt6_do_redirect()
4054 net_dbg_ratelimited("rt6_do_redirect: target address is not link-local unicast\n"); in rt6_do_redirect()
4058 in6_dev = __in6_dev_get(skb->dev); in rt6_do_redirect()
4061 if (in6_dev->cnf.forwarding || !in6_dev->cnf.accept_redirects) in rt6_do_redirect()
4066 * first-hop router for the specified ICMP Destination Address. in rt6_do_redirect()
4069 if (!ndisc_parse_options(skb->dev, msg->opt, optlen, &ndopts)) { in rt6_do_redirect()
4077 skb->dev); in rt6_do_redirect()
4079 net_dbg_ratelimited("rt6_redirect: invalid link-layer address length\n"); in rt6_do_redirect()
4085 if (rt->rt6i_flags & RTF_REJECT) { in rt6_do_redirect()
4090 /* Redirect received -> path was valid. in rt6_do_redirect()
4092 * so that this nexthop apparently is reachable. --ANK in rt6_do_redirect()
4094 dst_confirm_neigh(&rt->dst, &ipv6_hdr(skb)->saddr); in rt6_do_redirect()
4096 neigh = __neigh_lookup(&nd_tbl, &msg->target, skb->dev, 1); in rt6_do_redirect()
4104 ndisc_update(skb->dev, neigh, lladdr, NUD_STALE, in rt6_do_redirect()
4112 res.f6i = rcu_dereference(rt->from); in rt6_do_redirect()
4116 if (res.f6i->nh) { in rt6_do_redirect()
4118 .dev = dst->dev, in rt6_do_redirect()
4119 .gw = &rt->rt6i_gateway, in rt6_do_redirect()
4122 nexthop_for_each_fib6_nh(res.f6i->nh, in rt6_do_redirect()
4126 * using the dst->dev. Should be impossible in rt6_do_redirect()
4132 res.nh = res.f6i->fib6_nh; in rt6_do_redirect()
4135 res.fib6_flags = res.f6i->fib6_flags; in rt6_do_redirect()
4136 res.fib6_type = res.f6i->fib6_type; in rt6_do_redirect()
4137 nrt = ip6_rt_cache_alloc(&res, &msg->dest, NULL); in rt6_do_redirect()
4141 nrt->rt6i_flags = RTF_GATEWAY|RTF_UP|RTF_DYNAMIC|RTF_CACHE; in rt6_do_redirect()
4143 nrt->rt6i_flags &= ~RTF_GATEWAY; in rt6_do_redirect()
4145 nrt->rt6i_gateway = *(struct in6_addr *)neigh->primary_key; in rt6_do_redirect()
4149 dst_release_immediate(&nrt->dst); in rt6_do_redirect()
4153 netevent.old = &rt->dst; in rt6_do_redirect()
4154 netevent.new = &nrt->dst; in rt6_do_redirect()
4155 netevent.daddr = &msg->dest; in rt6_do_redirect()
4171 int ifindex = dev->ifindex; in rt6_get_route_info()
4181 fn = fib6_locate(&table->tb6_root, prefix, prefixlen, NULL, 0, true); in rt6_get_route_info()
4186 /* these routes do not use nexthops */ in rt6_get_route_info()
4187 if (rt->nh) in rt6_get_route_info()
4189 if (rt->fib6_nh->fib_nh_dev->ifindex != ifindex) in rt6_get_route_info()
4191 if (!(rt->fib6_flags & RTF_ROUTEINFO) || in rt6_get_route_info()
4192 !rt->fib6_nh->fib_nh_gw_family) in rt6_get_route_info()
4194 if (!ipv6_addr_equal(&rt->fib6_nh->fib_nh_gw6, gwaddr)) in rt6_get_route_info()
4213 .fc_ifindex = dev->ifindex, in rt6_add_route_info()
4251 for_each_fib6_node_rt_rcu(&table->tb6_root) { in rt6_get_dflt_router()
4254 /* RA routes do not use nexthops */ in rt6_get_dflt_router()
4255 if (rt->nh) in rt6_get_dflt_router()
4258 nh = rt->fib6_nh; in rt6_get_dflt_router()
4259 if (dev == nh->fib_nh_dev && in rt6_get_dflt_router()
4260 ((rt->fib6_flags & (RTF_ADDRCONF | RTF_DEFAULT)) == (RTF_ADDRCONF | RTF_DEFAULT)) && in rt6_get_dflt_router()
4261 ipv6_addr_equal(&nh->fib_nh_gw6, addr)) in rt6_get_dflt_router()
4278 .fc_ifindex = dev->ifindex, in rt6_add_dflt_router()
4295 table->flags |= RT6_TABLE_HAS_DFLT_ROUTER; in rt6_add_dflt_router()
4308 for_each_fib6_node_rt_rcu(&table->tb6_root) { in __rt6_purge_dflt_routers()
4312 if (rt->fib6_flags & (RTF_DEFAULT | RTF_ADDRCONF) && in __rt6_purge_dflt_routers()
4313 (!idev || idev->cnf.accept_ra != 2) && in __rt6_purge_dflt_routers()
4322 table->flags &= ~RT6_TABLE_HAS_DFLT_ROUTER; in __rt6_purge_dflt_routers()
4334 head = &net->ipv6.fib_table_hash[h]; in rt6_purge_dflt_routers()
4336 if (table->flags & RT6_TABLE_HAS_DFLT_ROUTER) in rt6_purge_dflt_routers()
4349 .fc_table = l3mdev_fib_table_by_index(net, rtmsg->rtmsg_ifindex) ? in rtmsg_to_fib6_config()
4351 .fc_ifindex = rtmsg->rtmsg_ifindex, in rtmsg_to_fib6_config()
4352 .fc_metric = rtmsg->rtmsg_metric ? : IP6_RT_PRIO_USER, in rtmsg_to_fib6_config()
4353 .fc_expires = rtmsg->rtmsg_info, in rtmsg_to_fib6_config()
4354 .fc_dst_len = rtmsg->rtmsg_dst_len, in rtmsg_to_fib6_config()
4355 .fc_src_len = rtmsg->rtmsg_src_len, in rtmsg_to_fib6_config()
4356 .fc_flags = rtmsg->rtmsg_flags, in rtmsg_to_fib6_config()
4357 .fc_type = rtmsg->rtmsg_type, in rtmsg_to_fib6_config()
4361 .fc_dst = rtmsg->rtmsg_dst, in rtmsg_to_fib6_config()
4362 .fc_src = rtmsg->rtmsg_src, in rtmsg_to_fib6_config()
4363 .fc_gateway = rtmsg->rtmsg_gateway, in rtmsg_to_fib6_config()
4373 return -EINVAL; in ipv6_route_ioctl()
4374 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) in ipv6_route_ioctl()
4375 return -EPERM; in ipv6_route_ioctl()
4399 struct net *net = dev_net(dst->dev); in ip6_pkt_drop()
4403 if (netif_is_l3_master(skb->dev) || in ip6_pkt_drop()
4404 dst->dev == net->loopback_dev) in ip6_pkt_drop()
4405 idev = __in6_dev_get_safely(dev_get_by_index_rcu(net, IP6CB(skb)->iif)); in ip6_pkt_drop()
4411 type = ipv6_addr_type(&ipv6_hdr(skb)->daddr); in ip6_pkt_drop()
4423 if (netif_is_l3_master(skb->dev)) in ip6_pkt_drop()
4438 skb->dev = skb_dst(skb)->dev; in ip6_pkt_discard_out()
4449 skb->dev = skb_dst(skb)->dev; in ip6_pkt_prohibit_out()
4463 .fc_table = l3mdev_fib_table(idev->dev) ? : RT6_TABLE_LOCAL, in addrconf_f6i_alloc()
4464 .fc_ifindex = idev->dev->ifindex, in addrconf_f6i_alloc()
4484 f6i->dst_nocount = true; in addrconf_f6i_alloc()
4487 (net->ipv6.devconf_all->disable_policy || in addrconf_f6i_alloc()
4488 idev->cnf.disable_policy)) in addrconf_f6i_alloc()
4489 f6i->dst_nopolicy = true; in addrconf_f6i_alloc()
4504 struct net_device *dev = ((struct arg_dev_net_ip *)arg)->dev; in fib6_remove_prefsrc()
4505 struct net *net = ((struct arg_dev_net_ip *)arg)->net; in fib6_remove_prefsrc()
4506 struct in6_addr *addr = ((struct arg_dev_net_ip *)arg)->addr; in fib6_remove_prefsrc()
4508 if (!rt->nh && in fib6_remove_prefsrc()
4509 ((void *)rt->fib6_nh->fib_nh_dev == dev || !dev) && in fib6_remove_prefsrc()
4510 rt != net->ipv6.fib6_null_entry && in fib6_remove_prefsrc()
4511 ipv6_addr_equal(addr, &rt->fib6_prefsrc.addr)) { in fib6_remove_prefsrc()
4514 rt->fib6_prefsrc.plen = 0; in fib6_remove_prefsrc()
4522 struct net *net = dev_net(ifp->idev->dev); in rt6_remove_prefsrc()
4524 .dev = ifp->idev->dev, in rt6_remove_prefsrc()
4526 .addr = &ifp->addr, in rt6_remove_prefsrc()
4539 /* RA routes do not use nexthops */ in fib6_clean_tohost()
4540 if (rt->nh) in fib6_clean_tohost()
4543 nh = rt->fib6_nh; in fib6_clean_tohost()
4544 if (((rt->fib6_flags & RTF_RA_ROUTER) == RTF_RA_ROUTER) && in fib6_clean_tohost()
4545 nh->fib_nh_gw_family && ipv6_addr_equal(gateway, &nh->fib_nh_gw6)) in fib6_clean_tohost()
4546 return -1; in fib6_clean_tohost()
4575 fn = rcu_dereference_protected(rt->fib6_node, in rt6_multipath_first_sibling()
4576 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4577 iter = rcu_dereference_protected(fn->leaf, in rt6_multipath_first_sibling()
4578 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4580 if (iter->fib6_metric == rt->fib6_metric && in rt6_multipath_first_sibling()
4583 iter = rcu_dereference_protected(iter->fib6_next, in rt6_multipath_first_sibling()
4584 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4593 if (rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD || in rt6_is_dead()
4594 (rt->fib6_nh->fib_nh_flags & RTNH_F_LINKDOWN && in rt6_is_dead()
4595 ip6_ignore_linkdown(rt->fib6_nh->fib_nh_dev))) in rt6_is_dead()
4607 total += rt->fib6_nh->fib_nh_weight; in rt6_multipath_total_weight()
4609 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) { in rt6_multipath_total_weight()
4611 total += iter->fib6_nh->fib_nh_weight; in rt6_multipath_total_weight()
4619 int upper_bound = -1; in rt6_upper_bound_set()
4622 *weight += rt->fib6_nh->fib_nh_weight; in rt6_upper_bound_set()
4624 total) - 1; in rt6_upper_bound_set()
4626 atomic_set(&rt->fib6_nh->fib_nh_upper_bound, upper_bound); in rt6_upper_bound_set()
4636 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_upper_bound_set()
4649 if (!rt->fib6_nsiblings || rt->should_flush) in rt6_multipath_rebalance()
4667 struct net *net = dev_net(arg->dev); in fib6_ifup()
4669 if (rt != net->ipv6.fib6_null_entry && !rt->nh && in fib6_ifup()
4670 rt->fib6_nh->fib_nh_dev == arg->dev) { in fib6_ifup()
4671 rt->fib6_nh->fib_nh_flags &= ~arg->nh_flags; in fib6_ifup()
4700 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_uses_dev()
4702 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_uses_dev()
4703 if (iter->fib6_nh->fib_nh_dev == dev) in rt6_multipath_uses_dev()
4713 rt->should_flush = 1; in rt6_multipath_flush()
4714 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_flush()
4715 iter->should_flush = 1; in rt6_multipath_flush()
4724 if (rt->fib6_nh->fib_nh_dev == down_dev || in rt6_multipath_dead_count()
4725 rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD) in rt6_multipath_dead_count()
4727 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_dead_count()
4728 if (iter->fib6_nh->fib_nh_dev == down_dev || in rt6_multipath_dead_count()
4729 iter->fib6_nh->fib_nh_flags & RTNH_F_DEAD) in rt6_multipath_dead_count()
4741 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_nh_flags_set()
4742 rt->fib6_nh->fib_nh_flags |= nh_flags; in rt6_multipath_nh_flags_set()
4743 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_nh_flags_set()
4744 if (iter->fib6_nh->fib_nh_dev == dev) in rt6_multipath_nh_flags_set()
4745 iter->fib6_nh->fib_nh_flags |= nh_flags; in rt6_multipath_nh_flags_set()
4752 const struct net_device *dev = arg->dev; in fib6_ifdown()
4755 if (rt == net->ipv6.fib6_null_entry || rt->nh) in fib6_ifdown()
4758 switch (arg->event) { in fib6_ifdown()
4760 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4762 if (rt->should_flush) in fib6_ifdown()
4763 return -1; in fib6_ifdown()
4764 if (!rt->fib6_nsiblings) in fib6_ifdown()
4765 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4770 if (rt->fib6_nsiblings + 1 == count) { in fib6_ifdown()
4772 return -1; in fib6_ifdown()
4779 return -2; in fib6_ifdown()
4781 if (rt->fib6_nh->fib_nh_dev != dev || in fib6_ifdown()
4782 rt->fib6_flags & (RTF_LOCAL | RTF_ANYCAST)) in fib6_ifdown()
4784 rt->fib6_nh->fib_nh_flags |= RTNH_F_LINKDOWN; in fib6_ifdown()
4802 if (net->ipv6.sysctl.skip_notify_on_dev_down) in rt6_sync_down_dev()
4824 struct fib6_info *f6i = arg->f6i; in fib6_nh_mtu_change()
4831 if (nh->fib_nh_dev == arg->dev) { in fib6_nh_mtu_change()
4832 struct inet6_dev *idev = __in6_dev_get(arg->dev); in fib6_nh_mtu_change()
4833 u32 mtu = f6i->fib6_pmtu; in fib6_nh_mtu_change()
4835 if (mtu >= arg->mtu || in fib6_nh_mtu_change()
4836 (mtu < arg->mtu && mtu == idev->cnf.mtu6)) in fib6_nh_mtu_change()
4837 fib6_metric_set(f6i, RTAX_MTU, arg->mtu); in fib6_nh_mtu_change()
4840 rt6_exceptions_update_pmtu(idev, nh, arg->mtu); in fib6_nh_mtu_change()
4854 We still use this lock to block changes in rt6_mtu_change_route()
4858 idev = __in6_dev_get(arg->dev); in rt6_mtu_change_route()
4865 arg->f6i = f6i; in rt6_mtu_change_route()
4866 if (f6i->nh) { in rt6_mtu_change_route()
4868 return nexthop_for_each_fib6_nh(f6i->nh, fib6_nh_mtu_change, in rt6_mtu_change_route()
4872 return fib6_nh_mtu_change(f6i->fib6_nh, arg); in rt6_mtu_change_route()
4911 struct rtmsg *rtm; in rtm_to_fib6_config() local
4916 err = nlmsg_parse_deprecated(nlh, sizeof(*rtm), tb, RTA_MAX, in rtm_to_fib6_config()
4921 err = -EINVAL; in rtm_to_fib6_config()
4922 rtm = nlmsg_data(nlh); in rtm_to_fib6_config()
4925 .fc_table = rtm->rtm_table, in rtm_to_fib6_config()
4926 .fc_dst_len = rtm->rtm_dst_len, in rtm_to_fib6_config()
4927 .fc_src_len = rtm->rtm_src_len, in rtm_to_fib6_config()
4929 .fc_protocol = rtm->rtm_protocol, in rtm_to_fib6_config()
4930 .fc_type = rtm->rtm_type, in rtm_to_fib6_config()
4934 .fc_nlinfo.nl_net = sock_net(skb->sk), in rtm_to_fib6_config()
4937 if (rtm->rtm_type == RTN_UNREACHABLE || in rtm_to_fib6_config()
4938 rtm->rtm_type == RTN_BLACKHOLE || in rtm_to_fib6_config()
4939 rtm->rtm_type == RTN_PROHIBIT || in rtm_to_fib6_config()
4940 rtm->rtm_type == RTN_THROW) in rtm_to_fib6_config()
4941 cfg->fc_flags |= RTF_REJECT; in rtm_to_fib6_config()
4943 if (rtm->rtm_type == RTN_LOCAL) in rtm_to_fib6_config()
4944 cfg->fc_flags |= RTF_LOCAL; in rtm_to_fib6_config()
4946 if (rtm->rtm_flags & RTM_F_CLONED) in rtm_to_fib6_config()
4947 cfg->fc_flags |= RTF_CACHE; in rtm_to_fib6_config()
4949 cfg->fc_flags |= (rtm->rtm_flags & RTNH_F_ONLINK); in rtm_to_fib6_config()
4958 cfg->fc_nh_id = nla_get_u32(tb[RTA_NH_ID]); in rtm_to_fib6_config()
4962 cfg->fc_gateway = nla_get_in6_addr(tb[RTA_GATEWAY]); in rtm_to_fib6_config()
4963 cfg->fc_flags |= RTF_GATEWAY; in rtm_to_fib6_config()
4971 int plen = (rtm->rtm_dst_len + 7) >> 3; in rtm_to_fib6_config()
4976 nla_memcpy(&cfg->fc_dst, tb[RTA_DST], plen); in rtm_to_fib6_config()
4980 int plen = (rtm->rtm_src_len + 7) >> 3; in rtm_to_fib6_config()
4985 nla_memcpy(&cfg->fc_src, tb[RTA_SRC], plen); in rtm_to_fib6_config()
4989 cfg->fc_prefsrc = nla_get_in6_addr(tb[RTA_PREFSRC]); in rtm_to_fib6_config()
4992 cfg->fc_ifindex = nla_get_u32(tb[RTA_OIF]); in rtm_to_fib6_config()
4995 cfg->fc_metric = nla_get_u32(tb[RTA_PRIORITY]); in rtm_to_fib6_config()
4998 cfg->fc_mx = nla_data(tb[RTA_METRICS]); in rtm_to_fib6_config()
4999 cfg->fc_mx_len = nla_len(tb[RTA_METRICS]); in rtm_to_fib6_config()
5003 cfg->fc_table = nla_get_u32(tb[RTA_TABLE]); in rtm_to_fib6_config()
5006 cfg->fc_mp = nla_data(tb[RTA_MULTIPATH]); in rtm_to_fib6_config()
5007 cfg->fc_mp_len = nla_len(tb[RTA_MULTIPATH]); in rtm_to_fib6_config()
5009 err = lwtunnel_valid_encap_type_attr(cfg->fc_mp, in rtm_to_fib6_config()
5010 cfg->fc_mp_len, extack); in rtm_to_fib6_config()
5020 cfg->fc_flags |= RTF_PREF(pref); in rtm_to_fib6_config()
5024 cfg->fc_encap = tb[RTA_ENCAP]; in rtm_to_fib6_config()
5027 cfg->fc_encap_type = nla_get_u16(tb[RTA_ENCAP_TYPE]); in rtm_to_fib6_config()
5029 err = lwtunnel_valid_encap_type(cfg->fc_encap_type, extack); in rtm_to_fib6_config()
5038 cfg->fc_expires = jiffies_to_clock_t(timeout * HZ); in rtm_to_fib6_config()
5039 cfg->fc_flags |= RTF_EXPIRES; in rtm_to_fib6_config()
5060 int err = -EEXIST; in ip6_route_info_append()
5064 if (rt6_duplicate_nexthop(nh->fib6_info, rt)) in ip6_route_info_append()
5070 return -ENOMEM; in ip6_route_info_append()
5071 nh->fib6_info = rt; in ip6_route_info_append()
5072 memcpy(&nh->r_cfg, r_cfg, sizeof(*r_cfg)); in ip6_route_info_append()
5073 list_add_tail(&nh->next, rt6_nh_list); in ip6_route_info_append()
5091 if ((nlflags & NLM_F_APPEND) && rt_last && rt_last->fib6_nsiblings) { in ip6_route_mpath_notify()
5092 rt = list_first_or_null_rcu(&rt_last->fib6_siblings, in ip6_route_mpath_notify()
5111 fn = rcu_dereference(rt->fib6_node); in ip6_route_mpath_should_notify()
5115 leaf = rcu_dereference(fn->leaf); in ip6_route_mpath_should_notify()
5120 (rt_can_ecmp && rt->fib6_metric == leaf->fib6_metric && in ip6_route_mpath_should_notify()
5134 return -EINVAL; in fib6_gw_from_attr()
5146 struct nl_info *info = &cfg->fc_nlinfo; in ip6_route_multipath_add()
5157 int replace = (cfg->fc_nlinfo.nlh && in ip6_route_multipath_add()
5158 (cfg->fc_nlinfo.nlh->nlmsg_flags & NLM_F_REPLACE)); in ip6_route_multipath_add()
5162 if (info->nlh && info->nlh->nlmsg_flags & NLM_F_APPEND) in ip6_route_multipath_add()
5165 remaining = cfg->fc_mp_len; in ip6_route_multipath_add()
5166 rtnh = (struct rtnexthop *)cfg->fc_mp; in ip6_route_multipath_add()
5173 if (rtnh->rtnh_ifindex) in ip6_route_multipath_add()
5174 r_cfg.fc_ifindex = rtnh->rtnh_ifindex; in ip6_route_multipath_add()
5199 r_cfg.fc_flags |= (rtnh->rtnh_flags & RTNH_F_ONLINK); in ip6_route_multipath_add()
5207 err = -EINVAL; in ip6_route_multipath_add()
5214 rt->fib6_nh->fib_nh_weight = rtnh->rtnh_hops + 1; in ip6_route_multipath_add()
5216 err = ip6_route_info_append(info->nl_net, &rt6_nh_list, in ip6_route_multipath_add()
5228 "Invalid nexthop configuration - no valid nexthops"); in ip6_route_multipath_add()
5229 return -EINVAL; in ip6_route_multipath_add()
5236 info->skip_notify = 1; in ip6_route_multipath_add()
5241 info->skip_notify_kernel = 1; in ip6_route_multipath_add()
5245 err = __ip6_ins_rt(nh->fib6_info, info, extack); in ip6_route_multipath_add()
5255 rt_last = nh->fib6_info; in ip6_route_multipath_add()
5259 rt_notif = nh->fib6_info; in ip6_route_multipath_add()
5268 if (cfg->fc_nlinfo.nlh) { in ip6_route_multipath_add()
5269 cfg->fc_nlinfo.nlh->nlmsg_flags &= ~(NLM_F_EXCL | in ip6_route_multipath_add()
5271 cfg->fc_nlinfo.nlh->nlmsg_flags |= NLM_F_CREATE; in ip6_route_multipath_add()
5276 /* An in-kernel notification should only be sent in case the new in ip6_route_multipath_add()
5284 if (rt_notif->fib6_nsiblings != nhn - 1) in ip6_route_multipath_add()
5289 err = call_fib6_multipath_entry_notifiers(info->nl_net, in ip6_route_multipath_add()
5291 nhn - 1, extack); in ip6_route_multipath_add()
5315 ip6_route_del(&nh->r_cfg, extack); in ip6_route_multipath_add()
5320 fib6_info_release(nh->fib6_info); in ip6_route_multipath_add()
5321 list_del(&nh->next); in ip6_route_multipath_add()
5338 remaining = cfg->fc_mp_len; in ip6_route_multipath_del()
5339 rtnh = (struct rtnexthop *)cfg->fc_mp; in ip6_route_multipath_del()
5344 if (rtnh->rtnh_ifindex) in ip6_route_multipath_del()
5345 r_cfg.fc_ifindex = rtnh->rtnh_ifindex; in ip6_route_multipath_del()
5385 !nexthop_find_by_id(sock_net(skb->sk), cfg.fc_nh_id)) { in inet6_rtm_delroute()
5387 return -EINVAL; in inet6_rtm_delroute()
5426 if (nh->fib_nh_lws) { in rt6_nh_nlmsg_size()
5428 *nexthop_len += lwtunnel_get_encap_size(nh->fib_nh_lws); in rt6_nh_nlmsg_size()
5440 if (f6i->nh) { in rt6_nlmsg_size()
5442 nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_nlmsg_size, in rt6_nlmsg_size()
5445 struct fib6_nh *nh = f6i->fib6_nh; in rt6_nlmsg_size()
5449 if (f6i->fib6_nsiblings) { in rt6_nlmsg_size()
5454 list_for_each_entry_rcu(sibling, &f6i->fib6_siblings, in rt6_nlmsg_size()
5456 rt6_nh_nlmsg_size(sibling->fib6_nh, &nexthop_len); in rt6_nlmsg_size()
5461 nexthop_len += lwtunnel_get_encap_size(nh->fib_nh_lws); in rt6_nlmsg_size()
5498 if (fib_nexthop_info(skb, &fib6_nh->nh_common, AF_INET6, in rt6_fill_node_nexthop()
5506 return -EMSGSIZE; in rt6_fill_node_nexthop()
5520 struct rtmsg *rtm; in rt6_fill_node() local
5523 nlh = nlmsg_put(skb, portid, seq, type, sizeof(*rtm), flags); in rt6_fill_node()
5525 return -EMSGSIZE; in rt6_fill_node()
5528 rt6_dst = &rt6->rt6i_dst; in rt6_fill_node()
5529 rt6_src = &rt6->rt6i_src; in rt6_fill_node()
5530 rt6_flags = rt6->rt6i_flags; in rt6_fill_node()
5532 rt6_dst = &rt->fib6_dst; in rt6_fill_node()
5533 rt6_src = &rt->fib6_src; in rt6_fill_node()
5534 rt6_flags = rt->fib6_flags; in rt6_fill_node()
5537 rtm = nlmsg_data(nlh); in rt6_fill_node()
5538 rtm->rtm_family = AF_INET6; in rt6_fill_node()
5539 rtm->rtm_dst_len = rt6_dst->plen; in rt6_fill_node()
5540 rtm->rtm_src_len = rt6_src->plen; in rt6_fill_node()
5541 rtm->rtm_tos = 0; in rt6_fill_node()
5542 if (rt->fib6_table) in rt6_fill_node()
5543 table = rt->fib6_table->tb6_id; in rt6_fill_node()
5546 rtm->rtm_table = table < 256 ? table : RT_TABLE_COMPAT; in rt6_fill_node()
5550 rtm->rtm_type = rt->fib6_type; in rt6_fill_node()
5551 rtm->rtm_flags = 0; in rt6_fill_node()
5552 rtm->rtm_scope = RT_SCOPE_UNIVERSE; in rt6_fill_node()
5553 rtm->rtm_protocol = rt->fib6_protocol; in rt6_fill_node()
5556 rtm->rtm_flags |= RTM_F_CLONED; in rt6_fill_node()
5561 rtm->rtm_dst_len = 128; in rt6_fill_node()
5562 } else if (rtm->rtm_dst_len) in rt6_fill_node()
5563 if (nla_put_in6_addr(skb, RTA_DST, &rt6_dst->addr)) in rt6_fill_node()
5569 rtm->rtm_src_len = 128; in rt6_fill_node()
5570 } else if (rtm->rtm_src_len && in rt6_fill_node()
5571 nla_put_in6_addr(skb, RTA_SRC, &rt6_src->addr)) in rt6_fill_node()
5576 if (ipv6_addr_is_multicast(&rt6_dst->addr)) { in rt6_fill_node()
5577 int err = ip6mr_get_route(net, skb, rtm, portid); in rt6_fill_node()
5594 if (rt->fib6_prefsrc.plen) { in rt6_fill_node()
5596 saddr_buf = rt->fib6_prefsrc.addr; in rt6_fill_node()
5601 pmetrics = dst ? dst_metrics_ptr(dst) : rt->fib6_metrics->metrics; in rt6_fill_node()
5605 if (nla_put_u32(skb, RTA_PRIORITY, rt->fib6_metric)) in rt6_fill_node()
5613 nla_put_in6_addr(skb, RTA_GATEWAY, &rt6->rt6i_gateway)) in rt6_fill_node()
5616 if (dst->dev && nla_put_u32(skb, RTA_OIF, dst->dev->ifindex)) in rt6_fill_node()
5618 } else if (rt->fib6_nsiblings) { in rt6_fill_node()
5626 if (fib_add_nexthop(skb, &rt->fib6_nh->nh_common, in rt6_fill_node()
5627 rt->fib6_nh->fib_nh_weight, AF_INET6, in rt6_fill_node()
5633 list_for_each_entry_rcu(sibling, &rt->fib6_siblings, in rt6_fill_node()
5635 if (fib_add_nexthop(skb, &sibling->fib6_nh->nh_common, in rt6_fill_node()
5636 sibling->fib6_nh->fib_nh_weight, in rt6_fill_node()
5647 } else if (rt->nh) { in rt6_fill_node()
5648 if (nla_put_u32(skb, RTA_NH_ID, rt->nh->id)) in rt6_fill_node()
5651 if (nexthop_is_blackhole(rt->nh)) in rt6_fill_node()
5652 rtm->rtm_type = RTN_BLACKHOLE; in rt6_fill_node()
5654 if (READ_ONCE(net->ipv4.sysctl_nexthop_compat_mode) && in rt6_fill_node()
5655 rt6_fill_node_nexthop(skb, rt->nh, &nh_flags) < 0) in rt6_fill_node()
5658 rtm->rtm_flags |= nh_flags; in rt6_fill_node()
5660 if (fib_nexthop_info(skb, &rt->fib6_nh->nh_common, AF_INET6, in rt6_fill_node()
5664 rtm->rtm_flags |= nh_flags; in rt6_fill_node()
5668 expires = dst ? dst->expires : rt->expires; in rt6_fill_node()
5669 expires -= jiffies; in rt6_fill_node()
5673 if (rt->offload) in rt6_fill_node()
5674 rtm->rtm_flags |= RTM_F_OFFLOAD; in rt6_fill_node()
5675 if (rt->trap) in rt6_fill_node()
5676 rtm->rtm_flags |= RTM_F_TRAP; in rt6_fill_node()
5679 if (rtnl_put_cacheinfo(skb, dst, 0, expires, dst ? dst->error : 0) < 0) in rt6_fill_node()
5691 return -EMSGSIZE; in rt6_fill_node()
5698 if (nh->fib_nh_dev == dev) in fib6_info_nh_uses_dev()
5707 if (f6i->nh) { in fib6_info_uses_dev()
5710 return !!nexthop_for_each_fib6_nh(f6i->nh, in fib6_info_uses_dev()
5715 if (f6i->fib6_nh->fib_nh_dev == dev) in fib6_info_uses_dev()
5718 if (f6i->fib6_nsiblings) { in fib6_info_uses_dev()
5722 &f6i->fib6_siblings, fib6_siblings) { in fib6_info_uses_dev()
5723 if (sibling->fib6_nh->fib_nh_dev == dev) in fib6_info_uses_dev()
5742 struct rt6_rtnl_dump_arg *dump = w->dump; in rt6_nh_dump_exceptions()
5752 hlist_for_each_entry(rt6_ex, &bucket->chain, hlist) { in rt6_nh_dump_exceptions()
5753 if (w->skip) { in rt6_nh_dump_exceptions()
5754 w->skip--; in rt6_nh_dump_exceptions()
5769 if (rt6_check_expired(rt6_ex->rt6i)) { in rt6_nh_dump_exceptions()
5770 w->count++; in rt6_nh_dump_exceptions()
5774 err = rt6_fill_node(dump->net, dump->skb, w->rt, in rt6_nh_dump_exceptions()
5775 &rt6_ex->rt6i->dst, NULL, NULL, 0, in rt6_nh_dump_exceptions()
5777 NETLINK_CB(dump->cb->skb).portid, in rt6_nh_dump_exceptions()
5778 dump->cb->nlh->nlmsg_seq, w->flags); in rt6_nh_dump_exceptions()
5782 w->count++; in rt6_nh_dump_exceptions()
5790 /* Return -1 if done with node, number of handled routes on partial dump */
5794 struct fib_dump_filter *filter = &arg->filter; in rt6_dump_route()
5796 struct net *net = arg->net; in rt6_dump_route()
5799 if (rt == net->ipv6.fib6_null_entry) in rt6_dump_route()
5800 return -1; in rt6_dump_route()
5802 if ((filter->flags & RTM_F_PREFIX) && in rt6_dump_route()
5803 !(rt->fib6_flags & RTF_PREFIX_RT)) { in rt6_dump_route()
5805 return -1; in rt6_dump_route()
5807 if (filter->filter_set && in rt6_dump_route()
5808 ((filter->rt_type && rt->fib6_type != filter->rt_type) || in rt6_dump_route()
5809 (filter->dev && !fib6_info_uses_dev(rt, filter->dev)) || in rt6_dump_route()
5810 (filter->protocol && rt->fib6_protocol != filter->protocol))) { in rt6_dump_route()
5811 return -1; in rt6_dump_route()
5814 if (filter->filter_set || in rt6_dump_route()
5815 !filter->dump_routes || !filter->dump_exceptions) { in rt6_dump_route()
5819 if (filter->dump_routes) { in rt6_dump_route()
5821 skip--; in rt6_dump_route()
5823 if (rt6_fill_node(net, arg->skb, rt, NULL, NULL, NULL, in rt6_dump_route()
5825 NETLINK_CB(arg->cb->skb).portid, in rt6_dump_route()
5826 arg->cb->nlh->nlmsg_seq, flags)) { in rt6_dump_route()
5833 if (filter->dump_exceptions) { in rt6_dump_route()
5842 if (rt->nh) { in rt6_dump_route()
5843 err = nexthop_for_each_fib6_nh(rt->nh, in rt6_dump_route()
5847 err = rt6_nh_dump_exceptions(rt->fib6_nh, &w); in rt6_dump_route()
5855 return -1; in rt6_dump_route()
5863 struct rtmsg *rtm; in inet6_rtm_valid_getroute_req() local
5866 if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*rtm))) { in inet6_rtm_valid_getroute_req()
5869 return -EINVAL; in inet6_rtm_valid_getroute_req()
5873 return nlmsg_parse_deprecated(nlh, sizeof(*rtm), tb, RTA_MAX, in inet6_rtm_valid_getroute_req()
5876 rtm = nlmsg_data(nlh); in inet6_rtm_valid_getroute_req()
5877 if ((rtm->rtm_src_len && rtm->rtm_src_len != 128) || in inet6_rtm_valid_getroute_req()
5878 (rtm->rtm_dst_len && rtm->rtm_dst_len != 128) || in inet6_rtm_valid_getroute_req()
5879 rtm->rtm_table || rtm->rtm_protocol || rtm->rtm_scope || in inet6_rtm_valid_getroute_req()
5880 rtm->rtm_type) { in inet6_rtm_valid_getroute_req()
5882 return -EINVAL; in inet6_rtm_valid_getroute_req()
5884 if (rtm->rtm_flags & ~RTM_F_FIB_MATCH) { in inet6_rtm_valid_getroute_req()
5887 return -EINVAL; in inet6_rtm_valid_getroute_req()
5890 err = nlmsg_parse_deprecated_strict(nlh, sizeof(*rtm), tb, RTA_MAX, in inet6_rtm_valid_getroute_req()
5895 if ((tb[RTA_SRC] && !rtm->rtm_src_len) || in inet6_rtm_valid_getroute_req()
5896 (tb[RTA_DST] && !rtm->rtm_dst_len)) { in inet6_rtm_valid_getroute_req()
5898 return -EINVAL; in inet6_rtm_valid_getroute_req()
5918 return -EINVAL; in inet6_rtm_valid_getroute_req()
5928 struct net *net = sock_net(in_skb->sk); in inet6_rtm_getroute()
5935 struct rtmsg *rtm; in inet6_rtm_getroute() local
5943 err = -EINVAL; in inet6_rtm_getroute()
5944 rtm = nlmsg_data(nlh); in inet6_rtm_getroute()
5945 fl6.flowlabel = ip6_make_flowinfo(rtm->rtm_tos, 0); in inet6_rtm_getroute()
5946 fibmatch = !!(rtm->rtm_flags & RTM_F_FIB_MATCH); in inet6_rtm_getroute()
6000 err = -ENODEV; in inet6_rtm_getroute()
6020 if (rt->dst.error) { in inet6_rtm_getroute()
6021 err = rt->dst.error; in inet6_rtm_getroute()
6026 if (rt == net->ipv6.ip6_null_entry) { in inet6_rtm_getroute()
6027 err = rt->dst.error; in inet6_rtm_getroute()
6035 err = -ENOBUFS; in inet6_rtm_getroute()
6039 skb_dst_set(skb, &rt->dst); in inet6_rtm_getroute()
6042 from = rcu_dereference(rt->from); in inet6_rtm_getroute()
6048 nlh->nlmsg_seq, 0); in inet6_rtm_getroute()
6053 nlh->nlmsg_seq, 0); in inet6_rtm_getroute()
6055 err = -ENETUNREACH; in inet6_rtm_getroute()
6073 struct net *net = info->nl_net; in inet6_rt_notify()
6077 err = -ENOBUFS; in inet6_rt_notify()
6078 seq = info->nlh ? info->nlh->nlmsg_seq : 0; in inet6_rt_notify()
6085 event, info->portid, seq, nlm_flags); in inet6_rt_notify()
6087 /* -EMSGSIZE implies BUG in rt6_nlmsg_size() */ in inet6_rt_notify()
6088 WARN_ON(err == -EMSGSIZE); in inet6_rt_notify()
6092 rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, in inet6_rt_notify()
6093 info->nlh, GFP_ATOMIC); in inet6_rt_notify()
6103 u32 seq = info->nlh ? info->nlh->nlmsg_seq : 0; in fib6_rt_update()
6105 int err = -ENOBUFS; in fib6_rt_update()
6107 /* call_fib6_entry_notifiers will be removed when in-kernel notifier in fib6_rt_update()
6117 RTM_NEWROUTE, info->portid, seq, NLM_F_REPLACE); in fib6_rt_update()
6119 /* -EMSGSIZE implies BUG in rt6_nlmsg_size() */ in fib6_rt_update()
6120 WARN_ON(err == -EMSGSIZE); in fib6_rt_update()
6124 rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, in fib6_rt_update()
6125 info->nlh, gfp_any()); in fib6_rt_update()
6138 if (!(dev->flags & IFF_LOOPBACK)) in ip6_route_dev_notify()
6142 net->ipv6.fib6_null_entry->fib6_nh->fib_nh_dev = dev; in ip6_route_dev_notify()
6143 net->ipv6.ip6_null_entry->dst.dev = dev; in ip6_route_dev_notify()
6144 net->ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(dev); in ip6_route_dev_notify()
6146 net->ipv6.ip6_prohibit_entry->dst.dev = dev; in ip6_route_dev_notify()
6147 net->ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(dev); in ip6_route_dev_notify()
6148 net->ipv6.ip6_blk_hole_entry->dst.dev = dev; in ip6_route_dev_notify()
6149 net->ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(dev); in ip6_route_dev_notify()
6152 dev->reg_state != NETREG_UNREGISTERED) { in ip6_route_dev_notify()
6156 in6_dev_put_clear(&net->ipv6.ip6_null_entry->rt6i_idev); in ip6_route_dev_notify()
6158 in6_dev_put_clear(&net->ipv6.ip6_prohibit_entry->rt6i_idev); in ip6_route_dev_notify()
6159 in6_dev_put_clear(&net->ipv6.ip6_blk_hole_entry->rt6i_idev); in ip6_route_dev_notify()
6173 struct net *net = (struct net *)seq->private; in rt6_stats_seq_show()
6175 net->ipv6.rt6_stats->fib_nodes, in rt6_stats_seq_show()
6176 net->ipv6.rt6_stats->fib_route_nodes, in rt6_stats_seq_show()
6177 atomic_read(&net->ipv6.rt6_stats->fib_rt_alloc), in rt6_stats_seq_show()
6178 net->ipv6.rt6_stats->fib_rt_entries, in rt6_stats_seq_show()
6179 net->ipv6.rt6_stats->fib_rt_cache, in rt6_stats_seq_show()
6180 dst_entries_get_slow(&net->ipv6.ip6_dst_ops), in rt6_stats_seq_show()
6181 net->ipv6.rt6_stats->fib_discarded_routes); in rt6_stats_seq_show()
6196 return -EINVAL; in ipv6_sysctl_rtcache_flush()
6198 net = (struct net *)ctl->extra1; in ipv6_sysctl_rtcache_flush()
6199 delay = net->ipv6.sysctl.flush_delay; in ipv6_sysctl_rtcache_flush()
6300 table[0].data = &net->ipv6.sysctl.flush_delay; in ipv6_route_sysctl_init()
6302 table[1].data = &net->ipv6.ip6_dst_ops.gc_thresh; in ipv6_route_sysctl_init()
6303 table[2].data = &net->ipv6.sysctl.ip6_rt_max_size; in ipv6_route_sysctl_init()
6304 table[3].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval; in ipv6_route_sysctl_init()
6305 table[4].data = &net->ipv6.sysctl.ip6_rt_gc_timeout; in ipv6_route_sysctl_init()
6306 table[5].data = &net->ipv6.sysctl.ip6_rt_gc_interval; in ipv6_route_sysctl_init()
6307 table[6].data = &net->ipv6.sysctl.ip6_rt_gc_elasticity; in ipv6_route_sysctl_init()
6308 table[7].data = &net->ipv6.sysctl.ip6_rt_mtu_expires; in ipv6_route_sysctl_init()
6309 table[8].data = &net->ipv6.sysctl.ip6_rt_min_advmss; in ipv6_route_sysctl_init()
6310 table[9].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval; in ipv6_route_sysctl_init()
6311 table[10].data = &net->ipv6.sysctl.skip_notify_on_dev_down; in ipv6_route_sysctl_init()
6314 if (net->user_ns != &init_user_ns) in ipv6_route_sysctl_init()
6324 int ret = -ENOMEM; in ip6_route_net_init()
6326 memcpy(&net->ipv6.ip6_dst_ops, &ip6_dst_ops_template, in ip6_route_net_init()
6327 sizeof(net->ipv6.ip6_dst_ops)); in ip6_route_net_init()
6329 if (dst_entries_init(&net->ipv6.ip6_dst_ops) < 0) in ip6_route_net_init()
6332 net->ipv6.fib6_null_entry = fib6_info_alloc(GFP_KERNEL, true); in ip6_route_net_init()
6333 if (!net->ipv6.fib6_null_entry) in ip6_route_net_init()
6335 memcpy(net->ipv6.fib6_null_entry, &fib6_null_entry_template, in ip6_route_net_init()
6336 sizeof(*net->ipv6.fib6_null_entry)); in ip6_route_net_init()
6338 net->ipv6.ip6_null_entry = kmemdup(&ip6_null_entry_template, in ip6_route_net_init()
6339 sizeof(*net->ipv6.ip6_null_entry), in ip6_route_net_init()
6341 if (!net->ipv6.ip6_null_entry) in ip6_route_net_init()
6343 net->ipv6.ip6_null_entry->dst.ops = &net->ipv6.ip6_dst_ops; in ip6_route_net_init()
6344 dst_init_metrics(&net->ipv6.ip6_null_entry->dst, in ip6_route_net_init()
6346 INIT_LIST_HEAD(&net->ipv6.ip6_null_entry->rt6i_uncached); in ip6_route_net_init()
6349 net->ipv6.fib6_has_custom_rules = false; in ip6_route_net_init()
6350 net->ipv6.ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template, in ip6_route_net_init()
6351 sizeof(*net->ipv6.ip6_prohibit_entry), in ip6_route_net_init()
6353 if (!net->ipv6.ip6_prohibit_entry) in ip6_route_net_init()
6355 net->ipv6.ip6_prohibit_entry->dst.ops = &net->ipv6.ip6_dst_ops; in ip6_route_net_init()
6356 dst_init_metrics(&net->ipv6.ip6_prohibit_entry->dst, in ip6_route_net_init()
6358 INIT_LIST_HEAD(&net->ipv6.ip6_prohibit_entry->rt6i_uncached); in ip6_route_net_init()
6360 net->ipv6.ip6_blk_hole_entry = kmemdup(&ip6_blk_hole_entry_template, in ip6_route_net_init()
6361 sizeof(*net->ipv6.ip6_blk_hole_entry), in ip6_route_net_init()
6363 if (!net->ipv6.ip6_blk_hole_entry) in ip6_route_net_init()
6365 net->ipv6.ip6_blk_hole_entry->dst.ops = &net->ipv6.ip6_dst_ops; in ip6_route_net_init()
6366 dst_init_metrics(&net->ipv6.ip6_blk_hole_entry->dst, in ip6_route_net_init()
6368 INIT_LIST_HEAD(&net->ipv6.ip6_blk_hole_entry->rt6i_uncached); in ip6_route_net_init()
6370 net->ipv6.fib6_routes_require_src = 0; in ip6_route_net_init()
6374 net->ipv6.sysctl.flush_delay = 0; in ip6_route_net_init()
6375 net->ipv6.sysctl.ip6_rt_max_size = INT_MAX; in ip6_route_net_init()
6376 net->ipv6.sysctl.ip6_rt_gc_min_interval = HZ / 2; in ip6_route_net_init()
6377 net->ipv6.sysctl.ip6_rt_gc_timeout = 60*HZ; in ip6_route_net_init()
6378 net->ipv6.sysctl.ip6_rt_gc_interval = 30*HZ; in ip6_route_net_init()
6379 net->ipv6.sysctl.ip6_rt_gc_elasticity = 9; in ip6_route_net_init()
6380 net->ipv6.sysctl.ip6_rt_mtu_expires = 10*60*HZ; in ip6_route_net_init()
6381 net->ipv6.sysctl.ip6_rt_min_advmss = IPV6_MIN_MTU - 20 - 40; in ip6_route_net_init()
6382 net->ipv6.sysctl.skip_notify_on_dev_down = 0; in ip6_route_net_init()
6384 atomic_set(&net->ipv6.ip6_rt_gc_expire, 30*HZ); in ip6_route_net_init()
6392 kfree(net->ipv6.ip6_prohibit_entry); in ip6_route_net_init()
6394 kfree(net->ipv6.ip6_null_entry); in ip6_route_net_init()
6397 kfree(net->ipv6.fib6_null_entry); in ip6_route_net_init()
6399 dst_entries_destroy(&net->ipv6.ip6_dst_ops); in ip6_route_net_init()
6406 kfree(net->ipv6.fib6_null_entry); in ip6_route_net_exit()
6407 kfree(net->ipv6.ip6_null_entry); in ip6_route_net_exit()
6409 kfree(net->ipv6.ip6_prohibit_entry); in ip6_route_net_exit()
6410 kfree(net->ipv6.ip6_blk_hole_entry); in ip6_route_net_exit()
6412 dst_entries_destroy(&net->ipv6.ip6_dst_ops); in ip6_route_net_exit()
6418 if (!proc_create_net("ipv6_route", 0, net->proc_net, in ip6_route_net_init_late()
6421 return -ENOMEM; in ip6_route_net_init_late()
6423 if (!proc_create_net_single("rt6_stats", 0444, net->proc_net, in ip6_route_net_init_late()
6425 remove_proc_entry("ipv6_route", net->proc_net); in ip6_route_net_init_late()
6426 return -ENOMEM; in ip6_route_net_init_late()
6435 remove_proc_entry("ipv6_route", net->proc_net); in ip6_route_net_exit_late()
6436 remove_proc_entry("rt6_stats", net->proc_net); in ip6_route_net_exit_late()
6450 return -ENOMEM; in ipv6_inetpeer_init()
6452 net->ipv6.peers = bp; in ipv6_inetpeer_init()
6458 struct inet_peer_base *bp = net->ipv6.peers; in ipv6_inetpeer_exit()
6460 net->ipv6.peers = NULL; in ipv6_inetpeer_exit()
6477 .priority = ADDRCONF_NOTIFY_PRIORITY - 10,
6485 init_net.ipv6.fib6_null_entry->fib6_nh->fib_nh_dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6486 init_net.ipv6.ip6_null_entry->dst.dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6487 init_net.ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev); in ip6_route_init_special_entries()
6489 init_net.ipv6.ip6_prohibit_entry->dst.dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6490 init_net.ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev); in ip6_route_init_special_entries()
6491 init_net.ipv6.ip6_blk_hole_entry->dst.dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6492 init_net.ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev); in ip6_route_init_special_entries()
6538 ret = -ENOMEM; in ip6_route_init()
6606 INIT_LIST_HEAD(&ul->head); in ip6_route_init()
6607 spin_lock_init(&ul->lock); in ip6_route_init()