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,
143 rt->dst.rt_uncached_list = ul; in rt6_uncached_list_add()
145 spin_lock_bh(&ul->lock); in rt6_uncached_list_add()
146 list_add_tail(&rt->dst.rt_uncached, &ul->head); in rt6_uncached_list_add()
147 spin_unlock_bh(&ul->lock); in rt6_uncached_list_add()
152 if (!list_empty(&rt->dst.rt_uncached)) { in rt6_uncached_list_del()
153 struct uncached_list *ul = rt->dst.rt_uncached_list; in rt6_uncached_list_del()
155 spin_lock_bh(&ul->lock); in rt6_uncached_list_del()
156 list_del_init(&rt->dst.rt_uncached); in rt6_uncached_list_del()
157 spin_unlock_bh(&ul->lock); in rt6_uncached_list_del()
169 if (list_empty(&ul->head)) in rt6_uncached_list_flush_dev()
172 spin_lock_bh(&ul->lock); in rt6_uncached_list_flush_dev()
173 list_for_each_entry_safe(rt, safe, &ul->head, dst.rt_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()
178 if (rt_idev && rt_idev->dev == dev) { in rt6_uncached_list_flush_dev()
179 rt->rt6i_idev = in6_dev_get(blackhole_netdev); in rt6_uncached_list_flush_dev()
185 rt->dst.dev = blackhole_netdev; in rt6_uncached_list_flush_dev()
187 &rt->dst.dev_tracker, in rt6_uncached_list_flush_dev()
192 list_move(&rt->dst.rt_uncached, in rt6_uncached_list_flush_dev()
193 &ul->quarantine); in rt6_uncached_list_flush_dev()
195 spin_unlock_bh(&ul->lock); in rt6_uncached_list_flush_dev()
206 return &ipv6_hdr(skb)->daddr; in choose_neigh_daddr()
233 dst->dev, skb, daddr); in ip6_dst_neigh_lookup()
239 struct net_device *dev = dst->dev; in ip6_confirm_neigh()
244 if (dev->flags & (IFF_NOARP | IFF_LOOPBACK)) in ip6_confirm_neigh()
283 [RTAX_HOPLIMIT - 1] = 0,
300 .error = -ENETUNREACH,
314 .error = -EACCES,
326 .error = -EINVAL,
344 struct rt6_info *rt = dst_alloc(&net->ipv6.ip6_dst_ops, dev, in ip6_dst_alloc()
349 atomic_inc(&net->ipv6.rt6_stats->fib_rt_alloc); in ip6_dst_alloc()
365 idev = rt->rt6i_idev; in ip6_dst_destroy()
367 rt->rt6i_idev = NULL; in ip6_dst_destroy()
371 from = unrcu_pointer(xchg(&rt->from, NULL)); in ip6_dst_destroy()
378 struct inet6_dev *idev = rt->rt6i_idev; in ip6_dst_ifdown()
381 if (idev && idev->dev != blackhole_netdev) { in ip6_dst_ifdown()
385 rt->rt6i_idev = blackhole_idev; in ip6_dst_ifdown()
389 from = unrcu_pointer(xchg(&rt->from, NULL)); in ip6_dst_ifdown()
395 if (rt->rt6i_flags & RTF_EXPIRES) in __rt6_check_expired()
396 return time_after(jiffies, rt->dst.expires); in __rt6_check_expired()
405 from = rcu_dereference(rt->from); in rt6_check_expired()
407 if (rt->rt6i_flags & RTF_EXPIRES) { in rt6_check_expired()
408 if (time_after(jiffies, rt->dst.expires)) in rt6_check_expired()
411 return rt->dst.obsolete != DST_OBSOLETE_FORCE_CHK || in rt6_check_expired()
423 fn = rcu_dereference(rt->fib6_node); in rt6_multipath_first_sibling_rcu()
426 iter = rcu_dereference(fn->leaf); in rt6_multipath_first_sibling_rcu()
431 if (iter->fib6_metric == rt->fib6_metric && in rt6_multipath_first_sibling_rcu()
434 iter = rcu_dereference(iter->fib6_next); in rt6_multipath_first_sibling_rcu()
445 struct fib6_info *first, *match = res->f6i; in fib6_select_path()
449 if (!match->nh && (!match->fib6_nsiblings || have_oif_match)) in fib6_select_path()
452 if (match->nh && have_oif_match && res->nh) in fib6_select_path()
456 IP6CB(skb)->flags |= IP6SKB_MULTIPATH; in fib6_select_path()
459 * case it will always be non-zero. Otherwise now is the time to do it. in fib6_select_path()
461 if (!fl6->mp_hash && in fib6_select_path()
462 (!match->nh || nexthop_is_multipath(match->nh))) in fib6_select_path()
463 fl6->mp_hash = rt6_multipath_hash(net, fl6, skb, NULL); in fib6_select_path()
465 if (unlikely(match->nh)) { in fib6_select_path()
466 nexthop_path_fib6_result(res, fl6->mp_hash); in fib6_select_path()
474 hash = fl6->mp_hash; in fib6_select_path()
475 if (hash <= atomic_read(&first->fib6_nh->fib_nh_upper_bound)) { in fib6_select_path()
476 if (rt6_score_route(first->fib6_nh, first->fib6_flags, oif, in fib6_select_path()
482 list_for_each_entry_rcu(sibling, &first->fib6_siblings, in fib6_select_path()
484 const struct fib6_nh *nh = sibling->fib6_nh; in fib6_select_path()
487 nh_upper_bound = atomic_read(&nh->fib_nh_upper_bound); in fib6_select_path()
490 if (rt6_score_route(nh, sibling->fib6_flags, oif, strict) < 0) in fib6_select_path()
497 res->f6i = match; in fib6_select_path()
498 res->nh = match->fib6_nh; in fib6_select_path()
510 if (nh->fib_nh_flags & RTNH_F_DEAD) in __rt6_device_match()
513 dev = nh->fib_nh_dev; in __rt6_device_match()
515 if (dev->ifindex == oif) in __rt6_device_match()
538 arg->nh = nh; in __rt6_nh_dev_match()
539 return __rt6_device_match(arg->net, nh, arg->saddr, arg->oif, in __rt6_nh_dev_match()
540 arg->flags); in __rt6_nh_dev_match()
568 struct fib6_info *f6i = res->f6i; in rt6_device_match()
573 if (unlikely(f6i->nh)) { in rt6_device_match()
574 nh = nexthop_fib6_nh(f6i->nh); in rt6_device_match()
575 if (nexthop_is_blackhole(f6i->nh)) in rt6_device_match()
578 nh = f6i->fib6_nh; in rt6_device_match()
580 if (!(nh->fib_nh_flags & RTNH_F_DEAD)) in rt6_device_match()
584 for (spf6i = f6i; spf6i; spf6i = rcu_dereference(spf6i->fib6_next)) { in rt6_device_match()
587 if (unlikely(spf6i->nh)) { in rt6_device_match()
588 nh = rt6_nh_dev_match(net, spf6i->nh, res, saddr, in rt6_device_match()
593 nh = spf6i->fib6_nh; in rt6_device_match()
598 res->f6i = spf6i; in rt6_device_match()
604 res->f6i = net->ipv6.fib6_null_entry; in rt6_device_match()
605 nh = res->f6i->fib6_nh; in rt6_device_match()
609 if (unlikely(f6i->nh)) { in rt6_device_match()
610 nh = nexthop_fib6_nh(f6i->nh); in rt6_device_match()
611 if (nexthop_is_blackhole(f6i->nh)) in rt6_device_match()
614 nh = f6i->fib6_nh; in rt6_device_match()
617 if (nh->fib_nh_flags & RTNH_F_DEAD) { in rt6_device_match()
618 res->f6i = net->ipv6.fib6_null_entry; in rt6_device_match()
619 nh = res->f6i->fib6_nh; in rt6_device_match()
622 res->nh = nh; in rt6_device_match()
623 res->fib6_type = res->f6i->fib6_type; in rt6_device_match()
624 res->fib6_flags = res->f6i->fib6_flags; in rt6_device_match()
628 res->fib6_flags |= RTF_REJECT; in rt6_device_match()
629 res->fib6_type = RTN_BLACKHOLE; in rt6_device_match()
630 res->nh = nh; in rt6_device_match()
647 addrconf_addr_solict_mult(&work->target, &mcaddr); in rt6_probe_deferred()
648 ndisc_send_ns(work->dev, &work->target, &mcaddr, NULL, 0); in rt6_probe_deferred()
649 netdev_put(work->dev, &work->dev_tracker); in rt6_probe_deferred()
667 * Router Reachability Probe MUST be rate-limited in rt6_probe()
670 if (!fib6_nh->fib_nh_gw_family) in rt6_probe()
673 nh_gw = &fib6_nh->fib_nh_gw6; in rt6_probe()
674 dev = fib6_nh->fib_nh_dev; in rt6_probe()
676 last_probe = READ_ONCE(fib6_nh->last_probe); in rt6_probe()
682 if (READ_ONCE(neigh->nud_state) & NUD_VALID) in rt6_probe()
685 write_lock_bh(&neigh->lock); in rt6_probe()
686 if (!(neigh->nud_state & NUD_VALID) && in rt6_probe()
688 neigh->updated + idev->cnf.rtr_probe_interval)) { in rt6_probe()
693 write_unlock_bh(&neigh->lock); in rt6_probe()
695 idev->cnf.rtr_probe_interval)) { in rt6_probe()
699 if (!work || cmpxchg(&fib6_nh->last_probe, in rt6_probe()
703 INIT_WORK(&work->work, rt6_probe_deferred); in rt6_probe()
704 work->target = *nh_gw; in rt6_probe()
705 netdev_hold(dev, &work->dev_tracker, GFP_ATOMIC); in rt6_probe()
706 work->dev = dev; in rt6_probe()
707 schedule_work(&work->work); in rt6_probe()
728 neigh = __ipv6_neigh_lookup_noref(fib6_nh->fib_nh_dev, in rt6_check_neigh()
729 &fib6_nh->fib_nh_gw6); in rt6_check_neigh()
731 u8 nud_state = READ_ONCE(neigh->nud_state); in rt6_check_neigh()
755 if (!oif || nh->fib_nh_dev->ifindex == oif) in rt6_score_route()
764 !(fib6_flags & RTF_NONEXTHOP) && nh->fib_nh_gw_family) { in rt6_score_route()
779 if (nh->fib_nh_flags & RTNH_F_DEAD) in find_match()
782 if (ip6_ignore_linkdown(nh->fib_nh_dev) && in find_match()
783 nh->fib_nh_flags & RTNH_F_LINKDOWN && in find_match()
821 arg->nh = nh; in rt6_nh_find_match()
822 return find_match(nh, arg->flags, arg->oif, arg->strict, in rt6_nh_find_match()
823 arg->mpri, arg->do_rr); in rt6_nh_find_match()
835 f6i = rcu_dereference(f6i->fib6_next)) { in __find_rr_leaf()
839 if (cont && f6i->fib6_metric != metric) { in __find_rr_leaf()
847 if (unlikely(f6i->nh)) { in __find_rr_leaf()
849 .flags = f6i->fib6_flags, in __find_rr_leaf()
856 if (nexthop_is_blackhole(f6i->nh)) { in __find_rr_leaf()
857 res->fib6_flags = RTF_REJECT; in __find_rr_leaf()
858 res->fib6_type = RTN_BLACKHOLE; in __find_rr_leaf()
859 res->f6i = f6i; in __find_rr_leaf()
860 res->nh = nexthop_fib6_nh(f6i->nh); in __find_rr_leaf()
863 if (nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_find_match, in __find_rr_leaf()
869 nh = f6i->fib6_nh; in __find_rr_leaf()
870 if (find_match(nh, f6i->fib6_flags, oif, strict, in __find_rr_leaf()
875 res->f6i = f6i; in __find_rr_leaf()
876 res->nh = nh; in __find_rr_leaf()
877 res->fib6_flags = f6i->fib6_flags; in __find_rr_leaf()
878 res->fib6_type = f6i->fib6_type; in __find_rr_leaf()
887 u32 metric = rr_head->fib6_metric; in find_rr_leaf()
889 int mpri = -1; in find_rr_leaf()
897 if (res->f6i || !cont) in find_rr_leaf()
907 struct fib6_info *leaf = rcu_dereference(fn->leaf); in rt6_select()
913 res->f6i = NULL; in rt6_select()
915 if (!leaf || leaf == net->ipv6.fib6_null_entry) in rt6_select()
918 rt0 = rcu_dereference(fn->rr_ptr); in rt6_select()
923 * and fn->leaf does not points to its child's leaf in rt6_select()
927 key_plen = rt0->fib6_dst.plen; in rt6_select()
929 if (rt0->fib6_src.plen) in rt6_select()
930 key_plen = rt0->fib6_src.plen; in rt6_select()
932 if (fn->fn_bit != key_plen) in rt6_select()
937 struct fib6_info *next = rcu_dereference(rt0->fib6_next); in rt6_select()
939 /* no entries matched; do round-robin */ in rt6_select()
940 if (!next || next->fib6_metric != rt0->fib6_metric) in rt6_select()
944 spin_lock_bh(&leaf->fib6_table->tb6_lock); in rt6_select()
946 if (next->fib6_node) in rt6_select()
947 rcu_assign_pointer(fn->rr_ptr, next); in rt6_select()
948 spin_unlock_bh(&leaf->fib6_table->tb6_lock); in rt6_select()
953 if (!res->f6i) { in rt6_select()
954 res->f6i = net->ipv6.fib6_null_entry; in rt6_select()
955 res->nh = res->f6i->fib6_nh; in rt6_select()
956 res->fib6_flags = res->f6i->fib6_flags; in rt6_select()
957 res->fib6_type = res->f6i->fib6_type; in rt6_select()
963 return (res->f6i->fib6_flags & RTF_NONEXTHOP) || in rt6_is_gw_or_nonexthop()
964 res->nh->fib_nh_gw_family; in rt6_is_gw_or_nonexthop()
979 return -EINVAL; in rt6_route_rcv()
983 if (rinfo->length > 3) { in rt6_route_rcv()
984 return -EINVAL; in rt6_route_rcv()
985 } else if (rinfo->prefix_len > 128) { in rt6_route_rcv()
986 return -EINVAL; in rt6_route_rcv()
987 } else if (rinfo->prefix_len > 64) { in rt6_route_rcv()
988 if (rinfo->length < 2) { in rt6_route_rcv()
989 return -EINVAL; in rt6_route_rcv()
991 } else if (rinfo->prefix_len > 0) { in rt6_route_rcv()
992 if (rinfo->length < 1) { in rt6_route_rcv()
993 return -EINVAL; in rt6_route_rcv()
997 pref = rinfo->route_pref; in rt6_route_rcv()
999 return -EINVAL; in rt6_route_rcv()
1001 lifetime = addrconf_timeout_fixup(ntohl(rinfo->lifetime), HZ); in rt6_route_rcv()
1003 if (rinfo->length == 3) in rt6_route_rcv()
1004 prefix = (struct in6_addr *)rinfo->prefix; in rt6_route_rcv()
1008 (struct in6_addr *)rinfo->prefix, in rt6_route_rcv()
1009 rinfo->prefix_len); in rt6_route_rcv()
1013 if (rinfo->prefix_len == 0) in rt6_route_rcv()
1016 rt = rt6_get_route_info(net, prefix, rinfo->prefix_len, in rt6_route_rcv()
1025 rt = rt6_add_route_info(net, prefix, rinfo->prefix_len, gwaddr, in rt6_route_rcv()
1028 rt->fib6_flags = RTF_ROUTEINFO | in rt6_route_rcv()
1029 (rt->fib6_flags & ~RTF_PREF_MASK) | RTF_PREF(pref); in rt6_route_rcv()
1050 struct net_device *dev = res->nh->fib_nh_dev; in ip6_rt_get_dev_rcu()
1052 if (res->fib6_flags & (RTF_LOCAL | RTF_ANYCAST)) { in ip6_rt_get_dev_rcu()
1053 /* for copies of local routes, dst->dev needs to be the in ip6_rt_get_dev_rcu()
1058 !rt6_need_strict(&res->f6i->fib6_dst.addr)) in ip6_rt_get_dev_rcu()
1061 dev = dev_net(dev)->loopback_dev; in ip6_rt_get_dev_rcu()
1077 [RTN_BLACKHOLE] = -EINVAL,
1078 [RTN_UNREACHABLE] = -EHOSTUNREACH,
1079 [RTN_PROHIBIT] = -EACCES,
1080 [RTN_THROW] = -EAGAIN,
1081 [RTN_NAT] = -EINVAL,
1082 [RTN_XRESOLVE] = -EINVAL,
1094 if (rt->dst_nocount) in fib6_info_dst_flags()
1096 if (rt->dst_nopolicy) in fib6_info_dst_flags()
1104 rt->dst.error = ip6_rt_type_to_error(fib6_type); in ip6_rt_init_dst_reject()
1108 rt->dst.output = dst_discard_out; in ip6_rt_init_dst_reject()
1109 rt->dst.input = dst_discard; in ip6_rt_init_dst_reject()
1112 rt->dst.output = ip6_pkt_prohibit_out; in ip6_rt_init_dst_reject()
1113 rt->dst.input = ip6_pkt_prohibit; in ip6_rt_init_dst_reject()
1118 rt->dst.output = ip6_pkt_discard_out; in ip6_rt_init_dst_reject()
1119 rt->dst.input = ip6_pkt_discard; in ip6_rt_init_dst_reject()
1126 struct fib6_info *f6i = res->f6i; in ip6_rt_init_dst()
1128 if (res->fib6_flags & RTF_REJECT) { in ip6_rt_init_dst()
1129 ip6_rt_init_dst_reject(rt, res->fib6_type); in ip6_rt_init_dst()
1133 rt->dst.error = 0; in ip6_rt_init_dst()
1134 rt->dst.output = ip6_output; in ip6_rt_init_dst()
1136 if (res->fib6_type == RTN_LOCAL || res->fib6_type == RTN_ANYCAST) { in ip6_rt_init_dst()
1137 rt->dst.input = ip6_input; in ip6_rt_init_dst()
1138 } else if (ipv6_addr_type(&f6i->fib6_dst.addr) & IPV6_ADDR_MULTICAST) { in ip6_rt_init_dst()
1139 rt->dst.input = ip6_mc_input; in ip6_rt_init_dst()
1141 rt->dst.input = ip6_forward; in ip6_rt_init_dst()
1144 if (res->nh->fib_nh_lws) { in ip6_rt_init_dst()
1145 rt->dst.lwtstate = lwtstate_get(res->nh->fib_nh_lws); in ip6_rt_init_dst()
1146 lwtunnel_set_redirect(&rt->dst); in ip6_rt_init_dst()
1149 rt->dst.lastuse = jiffies; in ip6_rt_init_dst()
1155 rt->rt6i_flags &= ~RTF_EXPIRES; in rt6_set_from()
1156 rcu_assign_pointer(rt->from, from); in rt6_set_from()
1157 ip_dst_init_metrics(&rt->dst, from->fib6_metrics); in rt6_set_from()
1163 const struct fib6_nh *nh = res->nh; in ip6_rt_copy_init()
1164 const struct net_device *dev = nh->fib_nh_dev; in ip6_rt_copy_init()
1165 struct fib6_info *f6i = res->f6i; in ip6_rt_copy_init()
1169 rt->rt6i_dst = f6i->fib6_dst; in ip6_rt_copy_init()
1170 rt->rt6i_idev = dev ? in6_dev_get(dev) : NULL; in ip6_rt_copy_init()
1171 rt->rt6i_flags = res->fib6_flags; in ip6_rt_copy_init()
1172 if (nh->fib_nh_gw_family) { in ip6_rt_copy_init()
1173 rt->rt6i_gateway = nh->fib_nh_gw6; in ip6_rt_copy_init()
1174 rt->rt6i_flags |= RTF_GATEWAY; in ip6_rt_copy_init()
1178 rt->rt6i_src = f6i->fib6_src; in ip6_rt_copy_init()
1187 if (fn->fn_flags & RTN_TL_ROOT) in fib6_backtrack()
1189 pn = rcu_dereference(fn->parent); in fib6_backtrack()
1195 if (fn->fn_flags & RTN_RTINFO) in fib6_backtrack()
1204 if (dst_hold_safe(&rt->dst)) in ip6_hold_safe()
1207 rt = net->ipv6.ip6_null_entry; in ip6_hold_safe()
1208 dst_hold(&rt->dst); in ip6_hold_safe()
1219 struct net_device *dev = res->nh->fib_nh_dev; in ip6_create_rt_rcu()
1220 struct fib6_info *f6i = res->f6i; in ip6_create_rt_rcu()
1238 nrt = dev_net(dev)->ipv6.ip6_null_entry; in ip6_create_rt_rcu()
1239 dst_hold(&nrt->dst); in ip6_create_rt_rcu()
1254 fn = fib6_node_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr); in ip6_pol_route_lookup()
1256 res.f6i = rcu_dereference(fn->leaf); in ip6_pol_route_lookup()
1258 res.f6i = net->ipv6.fib6_null_entry; in ip6_pol_route_lookup()
1260 rt6_device_match(net, &res, &fl6->saddr, fl6->flowi6_oif, in ip6_pol_route_lookup()
1263 if (res.f6i == net->ipv6.fib6_null_entry) { in ip6_pol_route_lookup()
1264 fn = fib6_backtrack(fn, &fl6->saddr); in ip6_pol_route_lookup()
1268 rt = net->ipv6.ip6_null_entry; in ip6_pol_route_lookup()
1269 dst_hold(&rt->dst); in ip6_pol_route_lookup()
1275 fib6_select_path(net, &res, fl6, fl6->flowi6_oif, in ip6_pol_route_lookup()
1276 fl6->flowi6_oif != 0, skb, flags); in ip6_pol_route_lookup()
1279 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route_lookup()
1282 dst_use_noref(&rt->dst, jiffies); in ip6_pol_route_lookup()
1320 if (dst->error == 0) in rt6_lookup()
1329 /* ip6_ins_rt is called with FREE table->tb6_lock.
1341 table = rt->fib6_table; in __ip6_ins_rt()
1342 spin_lock_bh(&table->tb6_lock); in __ip6_ins_rt()
1343 err = fib6_add(&table->tb6_root, rt, info, extack); in __ip6_ins_rt()
1344 spin_unlock_bh(&table->tb6_lock); in __ip6_ins_rt()
1360 struct fib6_info *f6i = res->f6i; in ip6_rt_cache_alloc()
1379 rt->rt6i_flags |= RTF_CACHE; in ip6_rt_cache_alloc()
1380 rt->rt6i_dst.addr = *daddr; in ip6_rt_cache_alloc()
1381 rt->rt6i_dst.plen = 128; in ip6_rt_cache_alloc()
1384 if (f6i->fib6_dst.plen != 128 && in ip6_rt_cache_alloc()
1385 ipv6_addr_equal(&f6i->fib6_dst.addr, daddr)) in ip6_rt_cache_alloc()
1386 rt->rt6i_flags |= RTF_ANYCAST; in ip6_rt_cache_alloc()
1388 if (rt->rt6i_src.plen && saddr) { in ip6_rt_cache_alloc()
1389 rt->rt6i_src.addr = *saddr; in ip6_rt_cache_alloc()
1390 rt->rt6i_src.plen = 128; in ip6_rt_cache_alloc()
1400 struct fib6_info *f6i = res->f6i; in ip6_rt_pcpu_alloc()
1417 pcpu_rt->rt6i_flags |= RTF_PCPU; in ip6_rt_pcpu_alloc()
1419 if (f6i->nh) in ip6_rt_pcpu_alloc()
1420 pcpu_rt->sernum = rt_genid_ipv6(dev_net(dev)); in ip6_rt_pcpu_alloc()
1427 return rt6->sernum == rt_genid_ipv6(dev_net(rt6->dst.dev)); in rt6_is_valid()
1435 pcpu_rt = this_cpu_read(*res->nh->rt6i_pcpu); in rt6_get_pcpu_route()
1437 if (pcpu_rt && pcpu_rt->sernum && !rt6_is_valid(pcpu_rt)) { in rt6_get_pcpu_route()
1440 p = this_cpu_ptr(res->nh->rt6i_pcpu); in rt6_get_pcpu_route()
1444 dst_dev_put(&prev->dst); in rt6_get_pcpu_route()
1445 dst_release(&prev->dst); in rt6_get_pcpu_route()
1463 p = this_cpu_ptr(res->nh->rt6i_pcpu); in rt6_make_pcpu_route()
1467 if (res->f6i->fib6_destroying) { in rt6_make_pcpu_route()
1470 from = unrcu_pointer(xchg(&pcpu_rt->from, NULL)); in rt6_make_pcpu_route()
1492 net = dev_net(rt6_ex->rt6i->dst.dev); in rt6_remove_exception()
1493 net->ipv6.rt6_stats->fib_rt_cache--; in rt6_remove_exception()
1498 dst_dev_put(&rt6_ex->rt6i->dst); in rt6_remove_exception()
1500 hlist_del_rcu(&rt6_ex->hlist); in rt6_remove_exception()
1501 dst_release(&rt6_ex->rt6i->dst); in rt6_remove_exception()
1503 WARN_ON_ONCE(!bucket->depth); in rt6_remove_exception()
1504 bucket->depth--; in rt6_remove_exception()
1517 hlist_for_each_entry(rt6_ex, &bucket->chain, hlist) { in rt6_exception_remove_oldest()
1518 if (!oldest || time_before(rt6_ex->stamp, oldest->stamp)) in rt6_exception_remove_oldest()
1566 hlist_for_each_entry(rt6_ex, &(*bucket)->chain, hlist) { in __rt6_find_exception_spinlock()
1567 struct rt6_info *rt6 = rt6_ex->rt6i; in __rt6_find_exception_spinlock()
1568 bool matched = ipv6_addr_equal(daddr, &rt6->rt6i_dst.addr); in __rt6_find_exception_spinlock()
1572 matched = ipv6_addr_equal(saddr, &rt6->rt6i_src.addr); in __rt6_find_exception_spinlock()
1601 hlist_for_each_entry_rcu(rt6_ex, &(*bucket)->chain, hlist) { in __rt6_find_exception_rcu()
1602 struct rt6_info *rt6 = rt6_ex->rt6i; in __rt6_find_exception_rcu()
1603 bool matched = ipv6_addr_equal(daddr, &rt6->rt6i_dst.addr); in __rt6_find_exception_rcu()
1607 matched = ipv6_addr_equal(saddr, &rt6->rt6i_src.addr); in __rt6_find_exception_rcu()
1617 const struct fib6_nh *nh = res->nh; in fib6_mtu()
1620 if (res->f6i->fib6_pmtu) { in fib6_mtu()
1621 mtu = res->f6i->fib6_pmtu; in fib6_mtu()
1623 struct net_device *dev = nh->fib_nh_dev; in fib6_mtu()
1628 mtu = idev->cnf.mtu6; in fib6_mtu()
1634 return mtu - lwtunnel_headroom(nh->fib_nh_lws, mtu); in fib6_mtu()
1651 bucket = rcu_dereference_protected(nh->rt6i_exception_bucket, in fib6_nh_get_excptn_bucket()
1654 bucket = rcu_dereference(nh->rt6i_exception_bucket); in fib6_nh_get_excptn_bucket()
1681 bucket = rcu_dereference_protected(nh->rt6i_exception_bucket, in fib6_nh_excptn_bucket_set_flushed()
1687 rcu_assign_pointer(nh->rt6i_exception_bucket, bucket); in fib6_nh_excptn_bucket_set_flushed()
1693 struct net *net = dev_net(nrt->dst.dev); in rt6_insert_exception()
1695 struct fib6_info *f6i = res->f6i; in rt6_insert_exception()
1698 struct fib6_nh *nh = res->nh; in rt6_insert_exception()
1704 bucket = rcu_dereference_protected(nh->rt6i_exception_bucket, in rt6_insert_exception()
1710 err = -ENOMEM; in rt6_insert_exception()
1713 rcu_assign_pointer(nh->rt6i_exception_bucket, bucket); in rt6_insert_exception()
1715 err = -EINVAL; in rt6_insert_exception()
1726 if (f6i->fib6_src.plen) in rt6_insert_exception()
1727 src_key = &nrt->rt6i_src.addr; in rt6_insert_exception()
1733 if (dst_metric_raw(&nrt->dst, RTAX_MTU) >= fib6_mtu(res)) { in rt6_insert_exception()
1734 err = -EINVAL; in rt6_insert_exception()
1738 rt6_ex = __rt6_find_exception_spinlock(&bucket, &nrt->rt6i_dst.addr, in rt6_insert_exception()
1745 err = -ENOMEM; in rt6_insert_exception()
1748 rt6_ex->rt6i = nrt; in rt6_insert_exception()
1749 rt6_ex->stamp = jiffies; in rt6_insert_exception()
1750 hlist_add_head_rcu(&rt6_ex->hlist, &bucket->chain); in rt6_insert_exception()
1751 bucket->depth++; in rt6_insert_exception()
1752 net->ipv6.rt6_stats->fib_rt_cache++; in rt6_insert_exception()
1756 while (bucket->depth > max_depth) in rt6_insert_exception()
1762 /* Update fn->fn_sernum to invalidate all cached dst */ in rt6_insert_exception()
1764 spin_lock_bh(&f6i->fib6_table->tb6_lock); in rt6_insert_exception()
1766 spin_unlock_bh(&f6i->fib6_table->tb6_lock); in rt6_insert_exception()
1791 hlist_for_each_entry_safe(rt6_ex, tmp, &bucket->chain, hlist) { in fib6_nh_flush_exceptions()
1793 rcu_access_pointer(rt6_ex->rt6i->from) == from) in fib6_nh_flush_exceptions()
1796 WARN_ON_ONCE(!from && bucket->depth); in fib6_nh_flush_exceptions()
1814 if (f6i->nh) in rt6_flush_exceptions()
1815 nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_flush_exceptions, in rt6_flush_exceptions()
1818 fib6_nh_flush_exceptions(f6i->fib6_nh, f6i); in rt6_flush_exceptions()
1840 * So we need to use f6i->fib6_src to redo lookup in rt6_find_cached_rt()
1843 * rt->rt6i_src is updated.) in rt6_find_cached_rt()
1845 if (res->f6i->fib6_src.plen) in rt6_find_cached_rt()
1849 bucket = fib6_nh_get_excptn_bucket(res->nh, NULL); in rt6_find_cached_rt()
1852 if (rt6_ex && !rt6_check_expired(rt6_ex->rt6i)) in rt6_find_cached_rt()
1853 ret = rt6_ex->rt6i; in rt6_find_cached_rt()
1856 /* Use fib6_src as src_key and redo lookup */ in rt6_find_cached_rt()
1857 if (!ret && src_key && src_key != &res->f6i->fib6_src.addr) { in rt6_find_cached_rt()
1858 src_key = &res->f6i->fib6_src.addr; in rt6_find_cached_rt()
1875 if (!rcu_access_pointer(nh->rt6i_exception_bucket)) in fib6_nh_remove_exception()
1876 return -ENOENT; in fib6_nh_remove_exception()
1889 src_key = &rt->rt6i_src.addr; in fib6_nh_remove_exception()
1892 &rt->rt6i_dst.addr, in fib6_nh_remove_exception()
1898 err = -ENOENT; in fib6_nh_remove_exception()
1915 err = fib6_nh_remove_exception(nh, arg->plen, arg->rt); in rt6_nh_remove_exception_rt()
1926 from = rcu_dereference(rt->from); in rt6_remove_exception_rt()
1927 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_remove_exception_rt()
1928 return -EINVAL; in rt6_remove_exception_rt()
1930 if (from->nh) { in rt6_remove_exception_rt()
1933 .plen = from->fib6_src.plen in rt6_remove_exception_rt()
1938 rc = nexthop_for_each_fib6_nh(from->nh, in rt6_remove_exception_rt()
1941 return rc ? 0 : -ENOENT; in rt6_remove_exception_rt()
1944 return fib6_nh_remove_exception(from->fib6_nh, in rt6_remove_exception_rt()
1945 from->fib6_src.plen, rt); in rt6_remove_exception_rt()
1967 src_key = &rt->rt6i_src.addr; in fib6_nh_update_exception()
1969 rt6_ex = __rt6_find_exception_rcu(&bucket, &rt->rt6i_dst.addr, src_key); in fib6_nh_update_exception()
1971 rt6_ex->stamp = jiffies; in fib6_nh_update_exception()
1985 if (arg->dev != nh->fib_nh_dev || in fib6_nh_find_match()
1986 (arg->gw && !nh->fib_nh_gw_family) || in fib6_nh_find_match()
1987 (!arg->gw && nh->fib_nh_gw_family) || in fib6_nh_find_match()
1988 (arg->gw && !ipv6_addr_equal(arg->gw, &nh->fib_nh_gw6))) in fib6_nh_find_match()
1991 arg->match = nh; in fib6_nh_find_match()
2004 from = rcu_dereference(rt->from); in rt6_update_exception_stamp_rt()
2005 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_update_exception_stamp_rt()
2008 if (from->nh) { in rt6_update_exception_stamp_rt()
2010 .dev = rt->dst.dev, in rt6_update_exception_stamp_rt()
2011 .gw = &rt->rt6i_gateway, in rt6_update_exception_stamp_rt()
2014 nexthop_for_each_fib6_nh(from->nh, fib6_nh_find_match, &arg); in rt6_update_exception_stamp_rt()
2020 fib6_nh = from->fib6_nh; in rt6_update_exception_stamp_rt()
2022 fib6_nh_update_exception(fib6_nh, from->fib6_src.plen, rt); in rt6_update_exception_stamp_rt()
2040 if (dst_mtu(&rt->dst) >= mtu) in rt6_mtu_change_route_allowed()
2043 if (dst_mtu(&rt->dst) == idev->cnf.mtu6) in rt6_mtu_change_route_allowed()
2061 hlist_for_each_entry(rt6_ex, &bucket->chain, hlist) { in rt6_exceptions_update_pmtu()
2062 struct rt6_info *entry = rt6_ex->rt6i; in rt6_exceptions_update_pmtu()
2065 * route), the metrics of its rt->from have already in rt6_exceptions_update_pmtu()
2068 if (dst_metric_raw(&entry->dst, RTAX_MTU) && in rt6_exceptions_update_pmtu()
2070 dst_metric_set(&entry->dst, RTAX_MTU, mtu); in rt6_exceptions_update_pmtu()
2086 if (!rcu_access_pointer(nh->rt6i_exception_bucket)) in fib6_nh_exceptions_clean_tohost()
2094 &bucket->chain, hlist) { in fib6_nh_exceptions_clean_tohost()
2095 struct rt6_info *entry = rt6_ex->rt6i; in fib6_nh_exceptions_clean_tohost()
2097 if ((entry->rt6i_flags & RTF_CACHE_GATEWAY) == in fib6_nh_exceptions_clean_tohost()
2100 &entry->rt6i_gateway)) { in fib6_nh_exceptions_clean_tohost()
2116 struct rt6_info *rt = rt6_ex->rt6i; in rt6_age_examine_exception()
2118 /* we are pruning and obsoleting aged-out and non gateway exceptions in rt6_age_examine_exception()
2121 * EXPIRES exceptions - e.g. pmtu-generated ones are pruned when in rt6_age_examine_exception()
2124 if (!(rt->rt6i_flags & RTF_EXPIRES)) { in rt6_age_examine_exception()
2125 if (time_after_eq(now, rt->dst.lastuse + gc_args->timeout)) { in rt6_age_examine_exception()
2130 } else if (time_after(jiffies, rt->dst.expires)) { in rt6_age_examine_exception()
2136 if (rt->rt6i_flags & RTF_GATEWAY) { in rt6_age_examine_exception()
2139 neigh = __ipv6_neigh_lookup_noref(rt->dst.dev, &rt->rt6i_gateway); in rt6_age_examine_exception()
2141 if (!(neigh && (neigh->flags & NTF_ROUTER))) { in rt6_age_examine_exception()
2142 RT6_TRACE("purging route %p via non-router but gateway\n", in rt6_age_examine_exception()
2149 gc_args->more++; in rt6_age_examine_exception()
2161 if (!rcu_access_pointer(nh->rt6i_exception_bucket)) in fib6_nh_age_exceptions()
2170 &bucket->chain, hlist) { in fib6_nh_age_exceptions()
2190 fib6_nh_age_exceptions(nh, arg->gc_args, arg->now); in rt6_nh_age_exceptions()
2198 if (f6i->nh) { in rt6_age_exceptions()
2204 nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_age_exceptions, in rt6_age_exceptions()
2207 fib6_nh_age_exceptions(f6i->fib6_nh, gc_args, now); in rt6_age_exceptions()
2217 fn = fib6_node_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr); in fib6_table_lookup()
2222 if (res->f6i == net->ipv6.fib6_null_entry) { in fib6_table_lookup()
2223 fn = fib6_backtrack(fn, &fl6->saddr); in fib6_table_lookup()
2252 if (net->ipv6.devconf_all->forwarding == 0) in ip6_pol_route()
2258 if (res.f6i == net->ipv6.fib6_null_entry) in ip6_pol_route()
2264 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route()
2267 } else if (unlikely((fl6->flowi6_flags & FLOWI_FLAG_KNOWN_NH) && in ip6_pol_route()
2268 !res.nh->fib_nh_gw_family)) { in ip6_pol_route()
2271 * the daddr in the skb during the neighbor look-up is different in ip6_pol_route()
2272 * from the fl6->daddr used to look-up route here. in ip6_pol_route()
2274 rt = ip6_rt_cache_alloc(&res, &fl6->daddr, NULL); in ip6_pol_route()
2299 rt = net->ipv6.ip6_null_entry; in ip6_pol_route()
2314 return ip6_pol_route(net, table, fl6->flowi6_iif, fl6, skb, flags); in ip6_pol_route_input()
2323 if (rt6_need_strict(&fl6->daddr) && dev->type != ARPHRD_PIMREG) in ip6_route_input_lookup()
2342 if (likely(outer_iph->nexthdr != IPPROTO_ICMPV6)) in ip6_multipath_l3_keys()
2350 if (!icmpv6_is_err(icmph->icmp6_type)) in ip6_multipath_l3_keys()
2363 keys->addrs.v6addrs.src = _flkeys->addrs.v6addrs.src; in ip6_multipath_l3_keys()
2364 keys->addrs.v6addrs.dst = _flkeys->addrs.v6addrs.dst; in ip6_multipath_l3_keys()
2365 keys->tags.flow_label = _flkeys->tags.flow_label; in ip6_multipath_l3_keys()
2366 keys->basic.ip_proto = _flkeys->basic.ip_proto; in ip6_multipath_l3_keys()
2368 keys->addrs.v6addrs.src = key_iph->saddr; in ip6_multipath_l3_keys()
2369 keys->addrs.v6addrs.dst = key_iph->daddr; in ip6_multipath_l3_keys()
2370 keys->tags.flow_label = ip6_flowlabel(key_iph); in ip6_multipath_l3_keys()
2371 keys->basic.ip_proto = key_iph->nexthdr; in ip6_multipath_l3_keys()
2479 hash_keys.addrs.v6addrs.src = fl6->saddr; in rt6_multipath_custom_hash_fl6()
2481 hash_keys.addrs.v6addrs.dst = fl6->daddr; in rt6_multipath_custom_hash_fl6()
2483 hash_keys.basic.ip_proto = fl6->flowi6_proto; in rt6_multipath_custom_hash_fl6()
2487 hash_keys.ports.src = fl6->fl6_sport; in rt6_multipath_custom_hash_fl6()
2489 hash_keys.ports.dst = fl6->fl6_dport; in rt6_multipath_custom_hash_fl6()
2508 hash_keys.addrs.v6addrs.src = fl6->saddr; in rt6_multipath_hash()
2509 hash_keys.addrs.v6addrs.dst = fl6->daddr; in rt6_multipath_hash()
2511 hash_keys.basic.ip_proto = fl6->flowi6_proto; in rt6_multipath_hash()
2520 /* short-circuit if we already have L4 hash present */ in rt6_multipath_hash()
2521 if (skb->l4_hash) in rt6_multipath_hash()
2531 hash_keys.addrs.v6addrs.src = flkeys->addrs.v6addrs.src; in rt6_multipath_hash()
2532 hash_keys.addrs.v6addrs.dst = flkeys->addrs.v6addrs.dst; in rt6_multipath_hash()
2533 hash_keys.ports.src = flkeys->ports.src; in rt6_multipath_hash()
2534 hash_keys.ports.dst = flkeys->ports.dst; in rt6_multipath_hash()
2535 hash_keys.basic.ip_proto = flkeys->basic.ip_proto; in rt6_multipath_hash()
2539 hash_keys.addrs.v6addrs.src = fl6->saddr; in rt6_multipath_hash()
2540 hash_keys.addrs.v6addrs.dst = fl6->daddr; in rt6_multipath_hash()
2541 hash_keys.ports.src = fl6->fl6_sport; in rt6_multipath_hash()
2542 hash_keys.ports.dst = fl6->fl6_dport; in rt6_multipath_hash()
2543 hash_keys.basic.ip_proto = fl6->flowi6_proto; in rt6_multipath_hash()
2559 if (flkeys->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { in rt6_multipath_hash()
2561 hash_keys.addrs.v4addrs.src = flkeys->addrs.v4addrs.src; in rt6_multipath_hash()
2562 hash_keys.addrs.v4addrs.dst = flkeys->addrs.v4addrs.dst; in rt6_multipath_hash()
2563 } else if (flkeys->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { in rt6_multipath_hash()
2565 hash_keys.addrs.v6addrs.src = flkeys->addrs.v6addrs.src; in rt6_multipath_hash()
2566 hash_keys.addrs.v6addrs.dst = flkeys->addrs.v6addrs.dst; in rt6_multipath_hash()
2567 hash_keys.tags.flow_label = flkeys->tags.flow_label; in rt6_multipath_hash()
2568 hash_keys.basic.ip_proto = flkeys->basic.ip_proto; in rt6_multipath_hash()
2577 hash_keys.addrs.v6addrs.src = fl6->saddr; in rt6_multipath_hash()
2578 hash_keys.addrs.v6addrs.dst = fl6->daddr; in rt6_multipath_hash()
2580 hash_keys.basic.ip_proto = fl6->flowi6_proto; in rt6_multipath_hash()
2599 struct net *net = dev_net(skb->dev); in ip6_route_input()
2603 .flowi6_iif = skb->dev->ifindex, in ip6_route_input()
2604 .daddr = iph->daddr, in ip6_route_input()
2605 .saddr = iph->saddr, in ip6_route_input()
2607 .flowi6_mark = skb->mark, in ip6_route_input()
2608 .flowi6_proto = iph->nexthdr, in ip6_route_input()
2613 if (tun_info && !(tun_info->mode & IP_TUNNEL_INFO_TX)) in ip6_route_input()
2614 fl6.flowi6_tun_key.tun_id = tun_info->key.tun_id; in ip6_route_input()
2622 skb_dst_set_noref(skb, ip6_route_input_lookup(net, skb->dev, in ip6_route_input()
2632 return ip6_pol_route(net, table, fl6->flowi6_oif, fl6, skb, flags); in ip6_pol_route_output()
2642 if (ipv6_addr_type(&fl6->daddr) & in ip6_route_output_flags_noref()
2652 fl6->flowi6_iif = LOOPBACK_IFINDEX; in ip6_route_output_flags_noref()
2655 any_src = ipv6_addr_any(&fl6->saddr); in ip6_route_output_flags_noref()
2656 if ((sk && sk->sk_bound_dev_if) || rt6_need_strict(&fl6->daddr) || in ip6_route_output_flags_noref()
2657 (fl6->flowi6_oif && any_src)) in ip6_route_output_flags_noref()
2663 flags |= rt6_srcprefs2flags(inet6_sk(sk)->srcprefs); in ip6_route_output_flags_noref()
2680 if (list_empty(&rt6->dst.rt_uncached) && !dst_hold_safe(dst)) { in ip6_route_output_flags()
2681 dst = &net->ipv6.ip6_null_entry->dst; in ip6_route_output_flags()
2693 struct net_device *loopback_dev = net->loopback_dev; in ip6_blackhole_route()
2700 atomic_inc(&net->ipv6.rt6_stats->fib_rt_alloc); in ip6_blackhole_route()
2702 new = &rt->dst; in ip6_blackhole_route()
2703 new->__use = 1; in ip6_blackhole_route()
2704 new->input = dst_discard; in ip6_blackhole_route()
2705 new->output = dst_discard_out; in ip6_blackhole_route()
2707 dst_copy_metrics(new, &ort->dst); in ip6_blackhole_route()
2709 rt->rt6i_idev = in6_dev_get(loopback_dev); in ip6_blackhole_route()
2710 rt->rt6i_gateway = ort->rt6i_gateway; in ip6_blackhole_route()
2711 rt->rt6i_flags = ort->rt6i_flags & ~RTF_PCPU; in ip6_blackhole_route()
2713 memcpy(&rt->rt6i_dst, &ort->rt6i_dst, sizeof(struct rt6key)); in ip6_blackhole_route()
2715 memcpy(&rt->rt6i_src, &ort->rt6i_src, sizeof(struct rt6key)); in ip6_blackhole_route()
2720 return new ? new : ERR_PTR(-ENOMEM); in ip6_blackhole_route()
2753 return &rt->dst; in rt6_check()
2761 rt->dst.obsolete == DST_OBSOLETE_FORCE_CHK && in rt6_dst_from_check()
2763 return &rt->dst; in rt6_dst_from_check()
2777 if (rt->sernum) in ip6_dst_check()
2782 /* All IPV6 dsts are created with ->obsolete set to the value in ip6_dst_check()
2787 from = rcu_dereference(rt->from); in ip6_dst_check()
2789 if (from && (rt->rt6i_flags & RTF_PCPU || in ip6_dst_check()
2790 unlikely(!list_empty(&rt->dst.rt_uncached)))) in ip6_dst_check()
2806 if (rt->rt6i_flags & RTF_CACHE) { in ip6_negative_advice()
2830 if (rt->rt6i_flags & RTF_CACHE) { in ip6_link_failure()
2836 from = rcu_dereference(rt->from); in ip6_link_failure()
2838 fn = rcu_dereference(from->fib6_node); in ip6_link_failure()
2839 if (fn && (rt->rt6i_flags & RTF_DEFAULT)) in ip6_link_failure()
2840 WRITE_ONCE(fn->fn_sernum, -1); in ip6_link_failure()
2849 if (!(rt0->rt6i_flags & RTF_EXPIRES)) { in rt6_update_expires()
2853 from = rcu_dereference(rt0->from); in rt6_update_expires()
2855 rt0->dst.expires = from->expires; in rt6_update_expires()
2859 dst_set_expires(&rt0->dst, timeout); in rt6_update_expires()
2860 rt0->rt6i_flags |= RTF_EXPIRES; in rt6_update_expires()
2865 struct net *net = dev_net(rt->dst.dev); in rt6_do_update_pmtu()
2867 dst_metric_set(&rt->dst, RTAX_MTU, mtu); in rt6_do_update_pmtu()
2868 rt->rt6i_flags |= RTF_MODIFIED; in rt6_do_update_pmtu()
2869 rt6_update_expires(rt, net->ipv6.sysctl.ip6_rt_mtu_expires); in rt6_do_update_pmtu()
2874 return !(rt->rt6i_flags & RTF_CACHE) && in rt6_cache_allowed_for_pmtu()
2875 (rt->rt6i_flags & RTF_PCPU || rcu_access_pointer(rt->from)); in rt6_cache_allowed_for_pmtu()
2891 daddr = &iph->daddr; in __ip6_rt_update_pmtu()
2892 saddr = &iph->saddr; in __ip6_rt_update_pmtu()
2894 daddr = &sk->sk_v6_daddr; in __ip6_rt_update_pmtu()
2895 saddr = &inet6_sk(sk)->saddr; in __ip6_rt_update_pmtu()
2911 /* update rt6_ex->stamp for cache */ in __ip6_rt_update_pmtu()
2912 if (rt6->rt6i_flags & RTF_CACHE) in __ip6_rt_update_pmtu()
2919 res.f6i = rcu_dereference(rt6->from); in __ip6_rt_update_pmtu()
2923 res.fib6_flags = res.f6i->fib6_flags; in __ip6_rt_update_pmtu()
2924 res.fib6_type = res.f6i->fib6_type; in __ip6_rt_update_pmtu()
2926 if (res.f6i->nh) { in __ip6_rt_update_pmtu()
2928 .dev = dst->dev, in __ip6_rt_update_pmtu()
2929 .gw = &rt6->rt6i_gateway, in __ip6_rt_update_pmtu()
2932 nexthop_for_each_fib6_nh(res.f6i->nh, in __ip6_rt_update_pmtu()
2936 * using the dst->dev + gw. Should be impossible. in __ip6_rt_update_pmtu()
2943 res.nh = res.f6i->fib6_nh; in __ip6_rt_update_pmtu()
2950 dst_release_immediate(&nrt6->dst); in __ip6_rt_update_pmtu()
2968 const struct ipv6hdr *iph = (struct ipv6hdr *) skb->data; in ip6_update_pmtu()
2972 .flowi6_mark = mark ? mark : IP6_REPLY_MARK(net, skb->mark), in ip6_update_pmtu()
2973 .daddr = iph->daddr, in ip6_update_pmtu()
2974 .saddr = iph->saddr, in ip6_update_pmtu()
2980 if (!dst->error) in ip6_update_pmtu()
2988 int oif = sk->sk_bound_dev_if; in ip6_sk_update_pmtu()
2991 if (!oif && skb->dev) in ip6_sk_update_pmtu()
2992 oif = l3mdev_master_ifindex(skb->dev); in ip6_sk_update_pmtu()
2994 ip6_update_pmtu(skb, sock_net(sk), mtu, oif, READ_ONCE(sk->sk_mark), in ip6_sk_update_pmtu()
2995 sk->sk_uid); in ip6_sk_update_pmtu()
2998 if (!dst || !dst->obsolete || in ip6_sk_update_pmtu()
2999 dst->ops->check(dst, inet6_sk(sk)->dst_cookie)) in ip6_sk_update_pmtu()
3003 if (!sock_owned_by_user(sk) && !ipv6_addr_v4mapped(&sk->sk_v6_daddr)) in ip6_sk_update_pmtu()
3017 ipv6_addr_equal(&fl6->daddr, &sk->sk_v6_daddr) ? in ip6_sk_dst_store_flow()
3018 &sk->sk_v6_daddr : NULL, in ip6_sk_dst_store_flow()
3020 ipv6_addr_equal(&fl6->saddr, &np->saddr) ? in ip6_sk_dst_store_flow()
3021 &np->saddr : in ip6_sk_dst_store_flow()
3031 const struct fib6_nh *nh = res->nh; in ip6_redirect_nh_match()
3033 if (nh->fib_nh_flags & RTNH_F_DEAD || !nh->fib_nh_gw_family || in ip6_redirect_nh_match()
3034 fl6->flowi6_oif != nh->fib_nh_dev->ifindex) in ip6_redirect_nh_match()
3042 if (!ipv6_addr_equal(gw, &nh->fib_nh_gw6)) { in ip6_redirect_nh_match()
3045 rt_cache = rt6_find_cached_rt(res, &fl6->daddr, &fl6->saddr); in ip6_redirect_nh_match()
3047 ipv6_addr_equal(gw, &rt_cache->rt6i_gateway)) { in ip6_redirect_nh_match()
3067 arg->res->nh = nh; in fib6_nh_redirect_match()
3068 return ip6_redirect_nh_match(arg->res, arg->fl6, arg->gw, arg->ret); in fib6_nh_redirect_match()
3089 .gw = &rdfl->gateway, in __ip6_route_redirect()
3106 fn = fib6_node_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr); in __ip6_route_redirect()
3112 if (rt->fib6_flags & RTF_REJECT) in __ip6_route_redirect()
3114 if (unlikely(rt->nh)) { in __ip6_route_redirect()
3115 if (nexthop_is_blackhole(rt->nh)) in __ip6_route_redirect()
3117 /* on match, res->nh is filled in and potentially ret */ in __ip6_route_redirect()
3118 if (nexthop_for_each_fib6_nh(rt->nh, in __ip6_route_redirect()
3123 res.nh = rt->fib6_nh; in __ip6_route_redirect()
3124 if (ip6_redirect_nh_match(&res, fl6, &rdfl->gateway, in __ip6_route_redirect()
3131 rt = net->ipv6.fib6_null_entry; in __ip6_route_redirect()
3132 else if (rt->fib6_flags & RTF_REJECT) { in __ip6_route_redirect()
3133 ret = net->ipv6.ip6_null_entry; in __ip6_route_redirect()
3137 if (rt == net->ipv6.fib6_null_entry) { in __ip6_route_redirect()
3138 fn = fib6_backtrack(fn, &fl6->saddr); in __ip6_route_redirect()
3144 res.nh = rt->fib6_nh; in __ip6_route_redirect()
3149 res.fib6_flags = res.f6i->fib6_flags; in __ip6_route_redirect()
3150 res.fib6_type = res.f6i->fib6_type; in __ip6_route_redirect()
3178 const struct ipv6hdr *iph = (struct ipv6hdr *) skb->data; in ip6_redirect()
3184 .daddr = iph->daddr, in ip6_redirect()
3185 .saddr = iph->saddr, in ip6_redirect()
3190 dst = ip6_route_redirect(net, &fl6, skb, &ipv6_hdr(skb)->saddr); in ip6_redirect()
3204 .daddr = msg->dest, in ip6_redirect_no_header()
3205 .saddr = iph->daddr, in ip6_redirect_no_header()
3209 dst = ip6_route_redirect(net, &fl6, skb, &iph->saddr); in ip6_redirect_no_header()
3216 ip6_redirect(skb, sock_net(sk), sk->sk_bound_dev_if, in ip6_sk_redirect()
3217 READ_ONCE(sk->sk_mark), sk->sk_uid); in ip6_sk_redirect()
3223 struct net_device *dev = dst->dev; in ip6_default_advmss()
3227 mtu -= sizeof(struct ipv6hdr) + sizeof(struct tcphdr); in ip6_default_advmss()
3232 if (mtu < net->ipv6.sysctl.ip6_rt_min_advmss) in ip6_default_advmss()
3233 mtu = net->ipv6.sysctl.ip6_rt_min_advmss; in ip6_default_advmss()
3238 * Maximal non-jumbo IPv6 payload is IPV6_MAXPLEN and in ip6_default_advmss()
3239 * corresponding MSS is IPV6_MAXPLEN - tcp_header_size. in ip6_default_advmss()
3243 if (mtu > IPV6_MAXPLEN - sizeof(struct tcphdr)) in ip6_default_advmss()
3255 * 1. mtu on route is locked - use it
3266 const struct fib6_nh *nh = res->nh; in ip6_mtu_from_fib6()
3267 struct fib6_info *f6i = res->f6i; in ip6_mtu_from_fib6()
3273 mtu = f6i->fib6_pmtu; in ip6_mtu_from_fib6()
3280 mtu = dst_metric_raw(&rt->dst, RTAX_MTU); in ip6_mtu_from_fib6()
3282 struct net_device *dev = nh->fib_nh_dev; in ip6_mtu_from_fib6()
3286 if (idev && idev->cnf.mtu6 > mtu) in ip6_mtu_from_fib6()
3287 mtu = idev->cnf.mtu6; in ip6_mtu_from_fib6()
3292 return mtu - lwtunnel_headroom(nh->fib_nh_lws, mtu); in ip6_mtu_from_fib6()
3304 return ERR_PTR(-ENODEV); in icmp6_dst_alloc()
3309 dst = ERR_PTR(-ENOMEM); in icmp6_dst_alloc()
3313 rt->dst.input = ip6_input; in icmp6_dst_alloc()
3314 rt->dst.output = ip6_output; in icmp6_dst_alloc()
3315 rt->rt6i_gateway = fl6->daddr; in icmp6_dst_alloc()
3316 rt->rt6i_dst.addr = fl6->daddr; in icmp6_dst_alloc()
3317 rt->rt6i_dst.plen = 128; in icmp6_dst_alloc()
3318 rt->rt6i_idev = idev; in icmp6_dst_alloc()
3319 dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 0); in icmp6_dst_alloc()
3326 dst = xfrm_lookup(net, &rt->dst, flowi6_to_flowi(fl6), NULL, 0); in icmp6_dst_alloc()
3335 int rt_min_interval = net->ipv6.sysctl.ip6_rt_gc_min_interval; in ip6_dst_gc()
3336 int rt_elasticity = net->ipv6.sysctl.ip6_rt_gc_elasticity; in ip6_dst_gc()
3337 int rt_gc_timeout = net->ipv6.sysctl.ip6_rt_gc_timeout; in ip6_dst_gc()
3338 unsigned long rt_last_gc = net->ipv6.ip6_rt_last_gc; in ip6_dst_gc()
3345 fib6_run_gc(atomic_inc_return(&net->ipv6.ip6_rt_gc_expire), net, true); in ip6_dst_gc()
3347 if (entries < ops->gc_thresh) in ip6_dst_gc()
3348 atomic_set(&net->ipv6.ip6_rt_gc_expire, rt_gc_timeout >> 1); in ip6_dst_gc()
3350 val = atomic_read(&net->ipv6.ip6_rt_gc_expire); in ip6_dst_gc()
3351 atomic_set(&net->ipv6.ip6_rt_gc_expire, val - (val >> rt_elasticity)); in ip6_dst_gc()
3359 .flowi6_oif = cfg->fc_ifindex, in ip6_nh_lookup_table()
3361 .saddr = cfg->fc_prefsrc, in ip6_nh_lookup_table()
3368 return -EINVAL; in ip6_nh_lookup_table()
3370 if (!ipv6_addr_any(&cfg->fc_prefsrc)) in ip6_nh_lookup_table()
3375 err = fib6_table_lookup(net, table, cfg->fc_ifindex, &fl6, res, flags); in ip6_nh_lookup_table()
3376 if (!err && res->f6i != net->ipv6.fib6_null_entry) in ip6_nh_lookup_table()
3377 fib6_select_path(net, res, &fl6, cfg->fc_ifindex, in ip6_nh_lookup_table()
3378 cfg->fc_ifindex != 0, NULL, flags); in ip6_nh_lookup_table()
3389 const struct in6_addr *gw_addr = &cfg->fc_gateway; in ip6_route_check_nh_onlink()
3396 !ipv6_addr_any(&res.f6i->fib6_dst.addr) && in ip6_route_check_nh_onlink()
3397 (res.fib6_type != RTN_UNICAST || dev != res.nh->fib_nh_dev)) { in ip6_route_check_nh_onlink()
3400 err = -EINVAL; in ip6_route_check_nh_onlink()
3412 const struct in6_addr *gw_addr = &cfg->fc_gateway; in ip6_route_check_nh()
3416 int err = -EHOSTUNREACH; in ip6_route_check_nh()
3418 if (cfg->fc_table) { in ip6_route_check_nh()
3420 cfg->fc_table, flags, &res); in ip6_route_check_nh()
3425 res.nh->fib_nh_gw_family || in ip6_route_check_nh()
3426 (dev && dev != res.nh->fib_nh_dev)) in ip6_route_check_nh()
3427 err = -EHOSTUNREACH; in ip6_route_check_nh()
3432 .flowi6_oif = cfg->fc_ifindex, in ip6_route_check_nh()
3436 err = fib6_lookup(net, cfg->fc_ifindex, &fl6, &res, flags); in ip6_route_check_nh()
3438 res.nh->fib_nh_gw_family) in ip6_route_check_nh()
3439 err = -EHOSTUNREACH; in ip6_route_check_nh()
3444 fib6_select_path(net, &res, &fl6, cfg->fc_ifindex, in ip6_route_check_nh()
3445 cfg->fc_ifindex != 0, NULL, flags); in ip6_route_check_nh()
3450 if (dev != res.nh->fib_nh_dev) in ip6_route_check_nh()
3451 err = -EHOSTUNREACH; in ip6_route_check_nh()
3453 *_dev = dev = res.nh->fib_nh_dev; in ip6_route_check_nh()
3467 const struct in6_addr *gw_addr = &cfg->fc_gateway; in ip6_validate_gw()
3472 int err = -EINVAL; in ip6_validate_gw()
3476 * will return already-added prefix route via interface that in ip6_validate_gw()
3477 * prefix route was assigned to, which might be non-loopback. in ip6_validate_gw()
3486 /* IPv6 strictly inhibits using not link-local in ip6_validate_gw()
3491 * some exceptions. --ANK in ip6_validate_gw()
3492 * We allow IPv4-mapped nexthops to support RFC4798-type in ip6_validate_gw()
3502 if (cfg->fc_flags & RTNH_F_ONLINK) in ip6_validate_gw()
3517 err = -EINVAL; in ip6_validate_gw()
3521 } else if (dev->flags & IFF_LOOPBACK) { in ip6_validate_gw()
3544 (dev && (dev->flags & IFF_LOOPBACK) && in fib6_is_reject()
3556 netdevice_tracker *dev_tracker = &fib6_nh->fib_nh_dev_tracker; in fib6_nh_init()
3562 fib6_nh->fib_nh_family = AF_INET6; in fib6_nh_init()
3564 fib6_nh->last_probe = jiffies; in fib6_nh_init()
3566 if (cfg->fc_is_fdb) { in fib6_nh_init()
3567 fib6_nh->fib_nh_gw6 = cfg->fc_gateway; in fib6_nh_init()
3568 fib6_nh->fib_nh_gw_family = AF_INET6; in fib6_nh_init()
3572 err = -ENODEV; in fib6_nh_init()
3573 if (cfg->fc_ifindex) { in fib6_nh_init()
3574 dev = netdev_get_by_index(net, cfg->fc_ifindex, in fib6_nh_init()
3583 if (cfg->fc_flags & RTNH_F_ONLINK) { in fib6_nh_init()
3590 if (!(dev->flags & IFF_UP)) { in fib6_nh_init()
3592 err = -ENETDOWN; in fib6_nh_init()
3596 fib6_nh->fib_nh_flags |= RTNH_F_ONLINK; in fib6_nh_init()
3599 fib6_nh->fib_nh_weight = 1; in fib6_nh_init()
3604 addr_type = ipv6_addr_type(&cfg->fc_dst); in fib6_nh_init()
3605 if (fib6_is_reject(cfg->fc_flags, dev, addr_type)) { in fib6_nh_init()
3607 if (dev != net->loopback_dev) { in fib6_nh_init()
3612 dev = net->loopback_dev; in fib6_nh_init()
3616 err = -ENODEV; in fib6_nh_init()
3623 if (cfg->fc_flags & RTF_GATEWAY) { in fib6_nh_init()
3629 fib6_nh->fib_nh_gw6 = cfg->fc_gateway; in fib6_nh_init()
3630 fib6_nh->fib_nh_gw_family = AF_INET6; in fib6_nh_init()
3633 err = -ENODEV; in fib6_nh_init()
3637 if (!idev || idev->cnf.disable_ipv6) { in fib6_nh_init()
3639 err = -EACCES; in fib6_nh_init()
3643 if (!(dev->flags & IFF_UP) && !cfg->fc_ignore_dev_down) { in fib6_nh_init()
3645 err = -ENETDOWN; in fib6_nh_init()
3649 if (!(cfg->fc_flags & (RTF_LOCAL | RTF_ANYCAST)) && in fib6_nh_init()
3651 fib6_nh->fib_nh_flags |= RTNH_F_LINKDOWN; in fib6_nh_init()
3653 err = fib_nh_common_init(net, &fib6_nh->nh_common, cfg->fc_encap, in fib6_nh_init()
3654 cfg->fc_encap_type, cfg, gfp_flags, extack); in fib6_nh_init()
3659 fib6_nh->rt6i_pcpu = alloc_percpu_gfp(struct rt6_info *, gfp_flags); in fib6_nh_init()
3660 if (!fib6_nh->rt6i_pcpu) { in fib6_nh_init()
3661 err = -ENOMEM; in fib6_nh_init()
3665 fib6_nh->fib_nh_dev = dev; in fib6_nh_init()
3666 fib6_nh->fib_nh_oif = dev->ifindex; in fib6_nh_init()
3673 fib_nh_common_release(&fib6_nh->nh_common); in fib6_nh_init()
3674 fib6_nh->nh_common.nhc_pcpu_rth_output = NULL; in fib6_nh_init()
3675 fib6_nh->fib_nh_lws = NULL; in fib6_nh_init()
3691 rcu_assign_pointer(fib6_nh->rt6i_exception_bucket, NULL); in fib6_nh_release()
3698 free_percpu(fib6_nh->rt6i_pcpu); in fib6_nh_release()
3700 fib_nh_common_release(&fib6_nh->nh_common); in fib6_nh_release()
3707 if (!fib6_nh->rt6i_pcpu) in fib6_nh_release_dsts()
3713 ppcpu_rt = per_cpu_ptr(fib6_nh->rt6i_pcpu, cpu); in fib6_nh_release_dsts()
3716 dst_dev_put(&pcpu_rt->dst); in fib6_nh_release_dsts()
3717 dst_release(&pcpu_rt->dst); in fib6_nh_release_dsts()
3726 struct net *net = cfg->fc_nlinfo.nl_net; in ip6_route_info_create()
3731 int err = -EINVAL; in ip6_route_info_create()
3735 if (cfg->fc_flags & RTF_PCPU) { in ip6_route_info_create()
3741 if (cfg->fc_flags & RTF_CACHE) { in ip6_route_info_create()
3746 if (cfg->fc_type > RTN_MAX) { in ip6_route_info_create()
3751 if (cfg->fc_dst_len > 128) { in ip6_route_info_create()
3755 if (cfg->fc_src_len > 128) { in ip6_route_info_create()
3760 if (cfg->fc_src_len) { in ip6_route_info_create()
3766 if (cfg->fc_nh_id) { in ip6_route_info_create()
3767 nh = nexthop_find_by_id(net, cfg->fc_nh_id); in ip6_route_info_create()
3777 err = -ENOBUFS; in ip6_route_info_create()
3778 if (cfg->fc_nlinfo.nlh && in ip6_route_info_create()
3779 !(cfg->fc_nlinfo.nlh->nlmsg_flags & NLM_F_CREATE)) { in ip6_route_info_create()
3780 table = fib6_get_table(net, cfg->fc_table); in ip6_route_info_create()
3783 table = fib6_new_table(net, cfg->fc_table); in ip6_route_info_create()
3786 table = fib6_new_table(net, cfg->fc_table); in ip6_route_info_create()
3792 err = -ENOMEM; in ip6_route_info_create()
3797 rt->fib6_metrics = ip_fib_metrics_init(cfg->fc_mx, cfg->fc_mx_len, in ip6_route_info_create()
3799 if (IS_ERR(rt->fib6_metrics)) { in ip6_route_info_create()
3800 err = PTR_ERR(rt->fib6_metrics); in ip6_route_info_create()
3802 rt->fib6_metrics = (struct dst_metrics *)&dst_default_metrics; in ip6_route_info_create()
3806 if (cfg->fc_flags & RTF_ADDRCONF) in ip6_route_info_create()
3807 rt->dst_nocount = true; in ip6_route_info_create()
3809 if (cfg->fc_flags & RTF_EXPIRES) in ip6_route_info_create()
3811 clock_t_to_jiffies(cfg->fc_expires)); in ip6_route_info_create()
3815 if (cfg->fc_protocol == RTPROT_UNSPEC) in ip6_route_info_create()
3816 cfg->fc_protocol = RTPROT_BOOT; in ip6_route_info_create()
3817 rt->fib6_protocol = cfg->fc_protocol; in ip6_route_info_create()
3819 rt->fib6_table = table; in ip6_route_info_create()
3820 rt->fib6_metric = cfg->fc_metric; in ip6_route_info_create()
3821 rt->fib6_type = cfg->fc_type ? : RTN_UNICAST; in ip6_route_info_create()
3822 rt->fib6_flags = cfg->fc_flags & ~RTF_GATEWAY; in ip6_route_info_create()
3824 ipv6_addr_prefix(&rt->fib6_dst.addr, &cfg->fc_dst, cfg->fc_dst_len); in ip6_route_info_create()
3825 rt->fib6_dst.plen = cfg->fc_dst_len; in ip6_route_info_create()
3828 ipv6_addr_prefix(&rt->fib6_src.addr, &cfg->fc_src, cfg->fc_src_len); in ip6_route_info_create()
3829 rt->fib6_src.plen = cfg->fc_src_len; in ip6_route_info_create()
3832 if (rt->fib6_src.plen) { in ip6_route_info_create()
3834 err = -EINVAL; in ip6_route_info_create()
3839 err = -ENOENT; in ip6_route_info_create()
3842 rt->nh = nh; in ip6_route_info_create()
3843 fib6_nh = nexthop_fib6_nh(rt->nh); in ip6_route_info_create()
3845 err = fib6_nh_init(net, rt->fib6_nh, cfg, gfp_flags, extack); in ip6_route_info_create()
3849 fib6_nh = rt->fib6_nh; in ip6_route_info_create()
3854 addr_type = ipv6_addr_type(&cfg->fc_dst); in ip6_route_info_create()
3855 if (fib6_is_reject(cfg->fc_flags, rt->fib6_nh->fib_nh_dev, in ip6_route_info_create()
3857 rt->fib6_flags = RTF_REJECT | RTF_NONEXTHOP; in ip6_route_info_create()
3860 if (!ipv6_addr_any(&cfg->fc_prefsrc)) { in ip6_route_info_create()
3861 struct net_device *dev = fib6_nh->fib_nh_dev; in ip6_route_info_create()
3863 if (!ipv6_chk_addr(net, &cfg->fc_prefsrc, dev, 0)) { in ip6_route_info_create()
3865 err = -EINVAL; in ip6_route_info_create()
3868 rt->fib6_prefsrc.addr = cfg->fc_prefsrc; in ip6_route_info_create()
3869 rt->fib6_prefsrc.plen = 128; in ip6_route_info_create()
3871 rt->fib6_prefsrc.plen = 0; in ip6_route_info_create()
3878 ip_fib_metrics_put(rt->fib6_metrics); in ip6_route_info_create()
3893 err = __ip6_ins_rt(rt, &cfg->fc_nlinfo, extack); in ip6_route_add()
3901 struct net *net = info->nl_net; in __ip6_del_rt()
3905 if (rt == net->ipv6.fib6_null_entry) { in __ip6_del_rt()
3906 err = -ENOENT; in __ip6_del_rt()
3910 table = rt->fib6_table; in __ip6_del_rt()
3911 spin_lock_bh(&table->tb6_lock); in __ip6_del_rt()
3913 spin_unlock_bh(&table->tb6_lock); in __ip6_del_rt()
3932 struct nl_info *info = &cfg->fc_nlinfo; in __ip6_del_rt_siblings()
3933 struct net *net = info->nl_net; in __ip6_del_rt_siblings()
3936 int err = -ENOENT; in __ip6_del_rt_siblings()
3938 if (rt == net->ipv6.fib6_null_entry) in __ip6_del_rt_siblings()
3940 table = rt->fib6_table; in __ip6_del_rt_siblings()
3941 spin_lock_bh(&table->tb6_lock); in __ip6_del_rt_siblings()
3943 if (rt->fib6_nsiblings && cfg->fc_delete_all_nh) { in __ip6_del_rt_siblings()
3950 u32 seq = info->nlh ? info->nlh->nlmsg_seq : 0; in __ip6_del_rt_siblings()
3954 info->portid, seq, 0) < 0) { in __ip6_del_rt_siblings()
3958 info->skip_notify = 1; in __ip6_del_rt_siblings()
3966 info->skip_notify_kernel = 1; in __ip6_del_rt_siblings()
3967 fn = rcu_dereference_protected(rt->fib6_node, in __ip6_del_rt_siblings()
3968 lockdep_is_held(&table->tb6_lock)); in __ip6_del_rt_siblings()
3969 if (rcu_access_pointer(fn->leaf) == rt) { in __ip6_del_rt_siblings()
3972 last_sibling = list_last_entry(&rt->fib6_siblings, in __ip6_del_rt_siblings()
3976 last_sibling->fib6_next, in __ip6_del_rt_siblings()
3977 lockdep_is_held(&table->tb6_lock)); in __ip6_del_rt_siblings()
3984 rt, rt->fib6_nsiblings, in __ip6_del_rt_siblings()
3988 &rt->fib6_siblings, in __ip6_del_rt_siblings()
3998 spin_unlock_bh(&table->tb6_lock); in __ip6_del_rt_siblings()
4003 rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, in __ip6_del_rt_siblings()
4004 info->nlh, gfp_any()); in __ip6_del_rt_siblings()
4011 int rc = -ESRCH; in __ip6_del_cached_rt()
4013 if (cfg->fc_ifindex && rt->dst.dev->ifindex != cfg->fc_ifindex) in __ip6_del_cached_rt()
4016 if (cfg->fc_flags & RTF_GATEWAY && in __ip6_del_cached_rt()
4017 !ipv6_addr_equal(&cfg->fc_gateway, &rt->rt6i_gateway)) in __ip6_del_cached_rt()
4034 rt_cache = rt6_find_cached_rt(&res, &cfg->fc_dst, &cfg->fc_src); in ip6_del_cached_rt()
4051 rc = ip6_del_cached_rt(arg->cfg, arg->f6i, nh); in fib6_nh_del_cached_rt()
4052 return rc != -ESRCH ? rc : 0; in fib6_nh_del_cached_rt()
4062 return nexthop_for_each_fib6_nh(f6i->nh, fib6_nh_del_cached_rt, &arg); in ip6_del_cached_rt_nh()
4071 int err = -ESRCH; in ip6_route_del()
4073 table = fib6_get_table(cfg->fc_nlinfo.nl_net, cfg->fc_table); in ip6_route_del()
4081 fn = fib6_locate(&table->tb6_root, in ip6_route_del()
4082 &cfg->fc_dst, cfg->fc_dst_len, in ip6_route_del()
4083 &cfg->fc_src, cfg->fc_src_len, in ip6_route_del()
4084 !(cfg->fc_flags & RTF_CACHE)); in ip6_route_del()
4090 if (rt->nh && cfg->fc_nh_id && in ip6_route_del()
4091 rt->nh->id != cfg->fc_nh_id) in ip6_route_del()
4094 if (cfg->fc_flags & RTF_CACHE) { in ip6_route_del()
4097 if (rt->nh) { in ip6_route_del()
4099 } else if (cfg->fc_nh_id) { in ip6_route_del()
4102 nh = rt->fib6_nh; in ip6_route_del()
4105 if (rc != -ESRCH) { in ip6_route_del()
4112 if (cfg->fc_metric && cfg->fc_metric != rt->fib6_metric) in ip6_route_del()
4114 if (cfg->fc_protocol && in ip6_route_del()
4115 cfg->fc_protocol != rt->fib6_protocol) in ip6_route_del()
4118 if (rt->nh) { in ip6_route_del()
4123 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
4125 if (cfg->fc_nh_id) in ip6_route_del()
4128 nh = rt->fib6_nh; in ip6_route_del()
4129 if (cfg->fc_ifindex && in ip6_route_del()
4130 (!nh->fib_nh_dev || in ip6_route_del()
4131 nh->fib_nh_dev->ifindex != cfg->fc_ifindex)) in ip6_route_del()
4133 if (cfg->fc_flags & RTF_GATEWAY && in ip6_route_del()
4134 !ipv6_addr_equal(&cfg->fc_gateway, &nh->fib_nh_gw6)) in ip6_route_del()
4141 if (cfg->fc_flags & RTF_GATEWAY) in ip6_route_del()
4142 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
4164 optlen = skb_tail_pointer(skb) - skb_transport_header(skb); in rt6_do_redirect()
4165 optlen -= sizeof(*msg); in rt6_do_redirect()
4174 if (ipv6_addr_is_multicast(&msg->dest)) { in rt6_do_redirect()
4180 if (ipv6_addr_equal(&msg->dest, &msg->target)) { in rt6_do_redirect()
4182 } else if (ipv6_addr_type(&msg->target) != in rt6_do_redirect()
4184 net_dbg_ratelimited("rt6_do_redirect: target address is not link-local unicast\n"); in rt6_do_redirect()
4188 in6_dev = __in6_dev_get(skb->dev); in rt6_do_redirect()
4191 if (in6_dev->cnf.forwarding || !in6_dev->cnf.accept_redirects) in rt6_do_redirect()
4196 * first-hop router for the specified ICMP Destination Address. in rt6_do_redirect()
4199 if (!ndisc_parse_options(skb->dev, msg->opt, optlen, &ndopts)) { in rt6_do_redirect()
4207 skb->dev); in rt6_do_redirect()
4209 net_dbg_ratelimited("rt6_redirect: invalid link-layer address length\n"); in rt6_do_redirect()
4215 if (rt->rt6i_flags & RTF_REJECT) { in rt6_do_redirect()
4220 /* Redirect received -> path was valid. in rt6_do_redirect()
4222 * so that this nexthop apparently is reachable. --ANK in rt6_do_redirect()
4224 dst_confirm_neigh(&rt->dst, &ipv6_hdr(skb)->saddr); in rt6_do_redirect()
4226 neigh = __neigh_lookup(&nd_tbl, &msg->target, skb->dev, 1); in rt6_do_redirect()
4234 ndisc_update(skb->dev, neigh, lladdr, NUD_STALE, in rt6_do_redirect()
4242 res.f6i = rcu_dereference(rt->from); in rt6_do_redirect()
4246 if (res.f6i->nh) { in rt6_do_redirect()
4248 .dev = dst->dev, in rt6_do_redirect()
4249 .gw = &rt->rt6i_gateway, in rt6_do_redirect()
4252 nexthop_for_each_fib6_nh(res.f6i->nh, in rt6_do_redirect()
4256 * using the dst->dev. Should be impossible in rt6_do_redirect()
4262 res.nh = res.f6i->fib6_nh; in rt6_do_redirect()
4265 res.fib6_flags = res.f6i->fib6_flags; in rt6_do_redirect()
4266 res.fib6_type = res.f6i->fib6_type; in rt6_do_redirect()
4267 nrt = ip6_rt_cache_alloc(&res, &msg->dest, NULL); in rt6_do_redirect()
4271 nrt->rt6i_flags = RTF_GATEWAY|RTF_UP|RTF_DYNAMIC|RTF_CACHE; in rt6_do_redirect()
4273 nrt->rt6i_flags &= ~RTF_GATEWAY; in rt6_do_redirect()
4275 nrt->rt6i_gateway = *(struct in6_addr *)neigh->primary_key; in rt6_do_redirect()
4279 dst_release_immediate(&nrt->dst); in rt6_do_redirect()
4283 netevent.old = &rt->dst; in rt6_do_redirect()
4284 netevent.new = &nrt->dst; in rt6_do_redirect()
4285 netevent.daddr = &msg->dest; in rt6_do_redirect()
4301 int ifindex = dev->ifindex; in rt6_get_route_info()
4311 fn = fib6_locate(&table->tb6_root, prefix, prefixlen, NULL, 0, true); in rt6_get_route_info()
4316 /* these routes do not use nexthops */ in rt6_get_route_info()
4317 if (rt->nh) in rt6_get_route_info()
4319 if (rt->fib6_nh->fib_nh_dev->ifindex != ifindex) in rt6_get_route_info()
4321 if (!(rt->fib6_flags & RTF_ROUTEINFO) || in rt6_get_route_info()
4322 !rt->fib6_nh->fib_nh_gw_family) in rt6_get_route_info()
4324 if (!ipv6_addr_equal(&rt->fib6_nh->fib_nh_gw6, gwaddr)) in rt6_get_route_info()
4343 .fc_ifindex = dev->ifindex, in rt6_add_route_info()
4381 for_each_fib6_node_rt_rcu(&table->tb6_root) { in rt6_get_dflt_router()
4384 /* RA routes do not use nexthops */ in rt6_get_dflt_router()
4385 if (rt->nh) in rt6_get_dflt_router()
4388 nh = rt->fib6_nh; in rt6_get_dflt_router()
4389 if (dev == nh->fib_nh_dev && in rt6_get_dflt_router()
4390 ((rt->fib6_flags & (RTF_ADDRCONF | RTF_DEFAULT)) == (RTF_ADDRCONF | RTF_DEFAULT)) && in rt6_get_dflt_router()
4391 ipv6_addr_equal(&nh->fib_nh_gw6, addr)) in rt6_get_dflt_router()
4409 .fc_ifindex = dev->ifindex, in rt6_add_dflt_router()
4426 table->flags |= RT6_TABLE_HAS_DFLT_ROUTER; in rt6_add_dflt_router()
4439 for_each_fib6_node_rt_rcu(&table->tb6_root) { in __rt6_purge_dflt_routers()
4443 if (rt->fib6_flags & (RTF_DEFAULT | RTF_ADDRCONF) && in __rt6_purge_dflt_routers()
4444 (!idev || idev->cnf.accept_ra != 2) && in __rt6_purge_dflt_routers()
4453 table->flags &= ~RT6_TABLE_HAS_DFLT_ROUTER; in __rt6_purge_dflt_routers()
4465 head = &net->ipv6.fib_table_hash[h]; in rt6_purge_dflt_routers()
4467 if (table->flags & RT6_TABLE_HAS_DFLT_ROUTER) in rt6_purge_dflt_routers()
4480 .fc_table = l3mdev_fib_table_by_index(net, rtmsg->rtmsg_ifindex) ? in rtmsg_to_fib6_config()
4482 .fc_ifindex = rtmsg->rtmsg_ifindex, in rtmsg_to_fib6_config()
4483 .fc_metric = rtmsg->rtmsg_metric, in rtmsg_to_fib6_config()
4484 .fc_expires = rtmsg->rtmsg_info, in rtmsg_to_fib6_config()
4485 .fc_dst_len = rtmsg->rtmsg_dst_len, in rtmsg_to_fib6_config()
4486 .fc_src_len = rtmsg->rtmsg_src_len, in rtmsg_to_fib6_config()
4487 .fc_flags = rtmsg->rtmsg_flags, in rtmsg_to_fib6_config()
4488 .fc_type = rtmsg->rtmsg_type, in rtmsg_to_fib6_config()
4492 .fc_dst = rtmsg->rtmsg_dst, in rtmsg_to_fib6_config()
4493 .fc_src = rtmsg->rtmsg_src, in rtmsg_to_fib6_config()
4494 .fc_gateway = rtmsg->rtmsg_gateway, in rtmsg_to_fib6_config()
4504 return -EINVAL; in ipv6_route_ioctl()
4505 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) in ipv6_route_ioctl()
4506 return -EPERM; in ipv6_route_ioctl()
4533 struct net *net = dev_net(dst->dev); in ip6_pkt_drop()
4538 if (netif_is_l3_master(skb->dev) || in ip6_pkt_drop()
4539 dst->dev == net->loopback_dev) in ip6_pkt_drop()
4540 idev = __in6_dev_get_safely(dev_get_by_index_rcu(net, IP6CB(skb)->iif)); in ip6_pkt_drop()
4546 type = ipv6_addr_type(&ipv6_hdr(skb)->daddr); in ip6_pkt_drop()
4561 if (netif_is_l3_master(skb->dev)) in ip6_pkt_drop()
4576 skb->dev = skb_dst(skb)->dev; in ip6_pkt_discard_out()
4587 skb->dev = skb_dst(skb)->dev; in ip6_pkt_prohibit_out()
4602 .fc_table = l3mdev_fib_table(idev->dev) ? : RT6_TABLE_LOCAL, in addrconf_f6i_alloc()
4603 .fc_ifindex = idev->dev->ifindex, in addrconf_f6i_alloc()
4623 f6i->dst_nocount = true; in addrconf_f6i_alloc()
4626 (net->ipv6.devconf_all->disable_policy || in addrconf_f6i_alloc()
4627 idev->cnf.disable_policy)) in addrconf_f6i_alloc()
4628 f6i->dst_nopolicy = true; in addrconf_f6i_alloc()
4642 struct net *net = ((struct arg_dev_net_ip *)arg)->net; in fib6_remove_prefsrc()
4643 struct in6_addr *addr = ((struct arg_dev_net_ip *)arg)->addr; in fib6_remove_prefsrc()
4645 if (!rt->nh && in fib6_remove_prefsrc()
4646 rt != net->ipv6.fib6_null_entry && in fib6_remove_prefsrc()
4647 ipv6_addr_equal(addr, &rt->fib6_prefsrc.addr) && in fib6_remove_prefsrc()
4648 !ipv6_chk_addr(net, addr, rt->fib6_nh->fib_nh_dev, 0)) { in fib6_remove_prefsrc()
4651 rt->fib6_prefsrc.plen = 0; in fib6_remove_prefsrc()
4659 struct net *net = dev_net(ifp->idev->dev); in rt6_remove_prefsrc()
4662 .addr = &ifp->addr, in rt6_remove_prefsrc()
4675 /* RA routes do not use nexthops */ in fib6_clean_tohost()
4676 if (rt->nh) in fib6_clean_tohost()
4679 nh = rt->fib6_nh; in fib6_clean_tohost()
4680 if (((rt->fib6_flags & RTF_RA_ROUTER) == RTF_RA_ROUTER) && in fib6_clean_tohost()
4681 nh->fib_nh_gw_family && ipv6_addr_equal(gateway, &nh->fib_nh_gw6)) in fib6_clean_tohost()
4682 return -1; in fib6_clean_tohost()
4711 fn = rcu_dereference_protected(rt->fib6_node, in rt6_multipath_first_sibling()
4712 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4713 iter = rcu_dereference_protected(fn->leaf, in rt6_multipath_first_sibling()
4714 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4716 if (iter->fib6_metric == rt->fib6_metric && in rt6_multipath_first_sibling()
4719 iter = rcu_dereference_protected(iter->fib6_next, in rt6_multipath_first_sibling()
4720 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4729 if (rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD || in rt6_is_dead()
4730 (rt->fib6_nh->fib_nh_flags & RTNH_F_LINKDOWN && in rt6_is_dead()
4731 ip6_ignore_linkdown(rt->fib6_nh->fib_nh_dev))) in rt6_is_dead()
4743 total += rt->fib6_nh->fib_nh_weight; in rt6_multipath_total_weight()
4745 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) { in rt6_multipath_total_weight()
4747 total += iter->fib6_nh->fib_nh_weight; in rt6_multipath_total_weight()
4755 int upper_bound = -1; in rt6_upper_bound_set()
4758 *weight += rt->fib6_nh->fib_nh_weight; in rt6_upper_bound_set()
4760 total) - 1; in rt6_upper_bound_set()
4762 atomic_set(&rt->fib6_nh->fib_nh_upper_bound, upper_bound); in rt6_upper_bound_set()
4772 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_upper_bound_set()
4785 if (!rt->fib6_nsiblings || rt->should_flush) in rt6_multipath_rebalance()
4803 struct net *net = dev_net(arg->dev); in fib6_ifup()
4805 if (rt != net->ipv6.fib6_null_entry && !rt->nh && in fib6_ifup()
4806 rt->fib6_nh->fib_nh_dev == arg->dev) { in fib6_ifup()
4807 rt->fib6_nh->fib_nh_flags &= ~arg->nh_flags; in fib6_ifup()
4836 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_uses_dev()
4838 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_uses_dev()
4839 if (iter->fib6_nh->fib_nh_dev == dev) in rt6_multipath_uses_dev()
4849 rt->should_flush = 1; in rt6_multipath_flush()
4850 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_flush()
4851 iter->should_flush = 1; in rt6_multipath_flush()
4860 if (rt->fib6_nh->fib_nh_dev == down_dev || in rt6_multipath_dead_count()
4861 rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD) in rt6_multipath_dead_count()
4863 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_dead_count()
4864 if (iter->fib6_nh->fib_nh_dev == down_dev || in rt6_multipath_dead_count()
4865 iter->fib6_nh->fib_nh_flags & RTNH_F_DEAD) in rt6_multipath_dead_count()
4877 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_nh_flags_set()
4878 rt->fib6_nh->fib_nh_flags |= nh_flags; in rt6_multipath_nh_flags_set()
4879 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_nh_flags_set()
4880 if (iter->fib6_nh->fib_nh_dev == dev) in rt6_multipath_nh_flags_set()
4881 iter->fib6_nh->fib_nh_flags |= nh_flags; in rt6_multipath_nh_flags_set()
4888 const struct net_device *dev = arg->dev; in fib6_ifdown()
4891 if (rt == net->ipv6.fib6_null_entry || rt->nh) in fib6_ifdown()
4894 switch (arg->event) { in fib6_ifdown()
4896 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4898 if (rt->should_flush) in fib6_ifdown()
4899 return -1; in fib6_ifdown()
4900 if (!rt->fib6_nsiblings) in fib6_ifdown()
4901 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4906 if (rt->fib6_nsiblings + 1 == count) { in fib6_ifdown()
4908 return -1; in fib6_ifdown()
4915 return -2; in fib6_ifdown()
4917 if (rt->fib6_nh->fib_nh_dev != dev || in fib6_ifdown()
4918 rt->fib6_flags & (RTF_LOCAL | RTF_ANYCAST)) in fib6_ifdown()
4920 rt->fib6_nh->fib_nh_flags |= RTNH_F_LINKDOWN; in fib6_ifdown()
4938 if (net->ipv6.sysctl.skip_notify_on_dev_down) in rt6_sync_down_dev()
4960 struct fib6_info *f6i = arg->f6i; in fib6_nh_mtu_change()
4967 if (nh->fib_nh_dev == arg->dev) { in fib6_nh_mtu_change()
4968 struct inet6_dev *idev = __in6_dev_get(arg->dev); in fib6_nh_mtu_change()
4969 u32 mtu = f6i->fib6_pmtu; in fib6_nh_mtu_change()
4971 if (mtu >= arg->mtu || in fib6_nh_mtu_change()
4972 (mtu < arg->mtu && mtu == idev->cnf.mtu6)) in fib6_nh_mtu_change()
4973 fib6_metric_set(f6i, RTAX_MTU, arg->mtu); in fib6_nh_mtu_change()
4976 rt6_exceptions_update_pmtu(idev, nh, arg->mtu); in fib6_nh_mtu_change()
4990 We still use this lock to block changes in rt6_mtu_change_route()
4994 idev = __in6_dev_get(arg->dev); in rt6_mtu_change_route()
5001 arg->f6i = f6i; in rt6_mtu_change_route()
5002 if (f6i->nh) { in rt6_mtu_change_route()
5004 return nexthop_for_each_fib6_nh(f6i->nh, fib6_nh_mtu_change, in rt6_mtu_change_route()
5008 return fib6_nh_mtu_change(f6i->fib6_nh, arg); in rt6_mtu_change_route()
5047 struct rtmsg *rtm; in rtm_to_fib6_config() local
5052 err = nlmsg_parse_deprecated(nlh, sizeof(*rtm), tb, RTA_MAX, in rtm_to_fib6_config()
5057 err = -EINVAL; in rtm_to_fib6_config()
5058 rtm = nlmsg_data(nlh); in rtm_to_fib6_config()
5060 if (rtm->rtm_tos) { in rtm_to_fib6_config()
5067 .fc_table = rtm->rtm_table, in rtm_to_fib6_config()
5068 .fc_dst_len = rtm->rtm_dst_len, in rtm_to_fib6_config()
5069 .fc_src_len = rtm->rtm_src_len, in rtm_to_fib6_config()
5071 .fc_protocol = rtm->rtm_protocol, in rtm_to_fib6_config()
5072 .fc_type = rtm->rtm_type, in rtm_to_fib6_config()
5076 .fc_nlinfo.nl_net = sock_net(skb->sk), in rtm_to_fib6_config()
5079 if (rtm->rtm_type == RTN_UNREACHABLE || in rtm_to_fib6_config()
5080 rtm->rtm_type == RTN_BLACKHOLE || in rtm_to_fib6_config()
5081 rtm->rtm_type == RTN_PROHIBIT || in rtm_to_fib6_config()
5082 rtm->rtm_type == RTN_THROW) in rtm_to_fib6_config()
5083 cfg->fc_flags |= RTF_REJECT; in rtm_to_fib6_config()
5085 if (rtm->rtm_type == RTN_LOCAL) in rtm_to_fib6_config()
5086 cfg->fc_flags |= RTF_LOCAL; in rtm_to_fib6_config()
5088 if (rtm->rtm_flags & RTM_F_CLONED) in rtm_to_fib6_config()
5089 cfg->fc_flags |= RTF_CACHE; in rtm_to_fib6_config()
5091 cfg->fc_flags |= (rtm->rtm_flags & RTNH_F_ONLINK); in rtm_to_fib6_config()
5100 cfg->fc_nh_id = nla_get_u32(tb[RTA_NH_ID]); in rtm_to_fib6_config()
5104 cfg->fc_gateway = nla_get_in6_addr(tb[RTA_GATEWAY]); in rtm_to_fib6_config()
5105 cfg->fc_flags |= RTF_GATEWAY; in rtm_to_fib6_config()
5113 int plen = (rtm->rtm_dst_len + 7) >> 3; in rtm_to_fib6_config()
5118 nla_memcpy(&cfg->fc_dst, tb[RTA_DST], plen); in rtm_to_fib6_config()
5122 int plen = (rtm->rtm_src_len + 7) >> 3; in rtm_to_fib6_config()
5127 nla_memcpy(&cfg->fc_src, tb[RTA_SRC], plen); in rtm_to_fib6_config()
5131 cfg->fc_prefsrc = nla_get_in6_addr(tb[RTA_PREFSRC]); in rtm_to_fib6_config()
5134 cfg->fc_ifindex = nla_get_u32(tb[RTA_OIF]); in rtm_to_fib6_config()
5137 cfg->fc_metric = nla_get_u32(tb[RTA_PRIORITY]); in rtm_to_fib6_config()
5140 cfg->fc_mx = nla_data(tb[RTA_METRICS]); in rtm_to_fib6_config()
5141 cfg->fc_mx_len = nla_len(tb[RTA_METRICS]); in rtm_to_fib6_config()
5145 cfg->fc_table = nla_get_u32(tb[RTA_TABLE]); in rtm_to_fib6_config()
5148 cfg->fc_mp = nla_data(tb[RTA_MULTIPATH]); in rtm_to_fib6_config()
5149 cfg->fc_mp_len = nla_len(tb[RTA_MULTIPATH]); in rtm_to_fib6_config()
5151 err = lwtunnel_valid_encap_type_attr(cfg->fc_mp, in rtm_to_fib6_config()
5152 cfg->fc_mp_len, extack); in rtm_to_fib6_config()
5162 cfg->fc_flags |= RTF_PREF(pref); in rtm_to_fib6_config()
5166 cfg->fc_encap = tb[RTA_ENCAP]; in rtm_to_fib6_config()
5169 cfg->fc_encap_type = nla_get_u16(tb[RTA_ENCAP_TYPE]); in rtm_to_fib6_config()
5171 err = lwtunnel_valid_encap_type(cfg->fc_encap_type, extack); in rtm_to_fib6_config()
5180 cfg->fc_expires = jiffies_to_clock_t(timeout * HZ); in rtm_to_fib6_config()
5181 cfg->fc_flags |= RTF_EXPIRES; in rtm_to_fib6_config()
5202 int err = -EEXIST; in ip6_route_info_append()
5206 if (rt6_duplicate_nexthop(nh->fib6_info, rt)) in ip6_route_info_append()
5212 return -ENOMEM; in ip6_route_info_append()
5213 nh->fib6_info = rt; in ip6_route_info_append()
5214 memcpy(&nh->r_cfg, r_cfg, sizeof(*r_cfg)); in ip6_route_info_append()
5215 list_add_tail(&nh->next, rt6_nh_list); in ip6_route_info_append()
5233 if ((nlflags & NLM_F_APPEND) && rt_last && rt_last->fib6_nsiblings) { in ip6_route_mpath_notify()
5234 rt = list_first_or_null_rcu(&rt_last->fib6_siblings, in ip6_route_mpath_notify()
5253 fn = rcu_dereference(rt->fib6_node); in ip6_route_mpath_should_notify()
5257 leaf = rcu_dereference(fn->leaf); in ip6_route_mpath_should_notify()
5262 (rt_can_ecmp && rt->fib6_metric == leaf->fib6_metric && in ip6_route_mpath_should_notify()
5276 return -EINVAL; in fib6_gw_from_attr()
5288 struct nl_info *info = &cfg->fc_nlinfo; in ip6_route_multipath_add()
5299 int replace = (cfg->fc_nlinfo.nlh && in ip6_route_multipath_add()
5300 (cfg->fc_nlinfo.nlh->nlmsg_flags & NLM_F_REPLACE)); in ip6_route_multipath_add()
5304 if (info->nlh && info->nlh->nlmsg_flags & NLM_F_APPEND) in ip6_route_multipath_add()
5307 remaining = cfg->fc_mp_len; in ip6_route_multipath_add()
5308 rtnh = (struct rtnexthop *)cfg->fc_mp; in ip6_route_multipath_add()
5315 if (rtnh->rtnh_ifindex) in ip6_route_multipath_add()
5316 r_cfg.fc_ifindex = rtnh->rtnh_ifindex; in ip6_route_multipath_add()
5341 r_cfg.fc_flags |= (rtnh->rtnh_flags & RTNH_F_ONLINK); in ip6_route_multipath_add()
5349 err = -EINVAL; in ip6_route_multipath_add()
5356 rt->fib6_nh->fib_nh_weight = rtnh->rtnh_hops + 1; in ip6_route_multipath_add()
5358 err = ip6_route_info_append(info->nl_net, &rt6_nh_list, in ip6_route_multipath_add()
5370 "Invalid nexthop configuration - no valid nexthops"); in ip6_route_multipath_add()
5371 return -EINVAL; in ip6_route_multipath_add()
5378 info->skip_notify = 1; in ip6_route_multipath_add()
5383 info->skip_notify_kernel = 1; in ip6_route_multipath_add()
5387 err = __ip6_ins_rt(nh->fib6_info, info, extack); in ip6_route_multipath_add()
5397 rt_last = nh->fib6_info; in ip6_route_multipath_add()
5401 rt_notif = nh->fib6_info; in ip6_route_multipath_add()
5410 if (cfg->fc_nlinfo.nlh) { in ip6_route_multipath_add()
5411 cfg->fc_nlinfo.nlh->nlmsg_flags &= ~(NLM_F_EXCL | in ip6_route_multipath_add()
5413 cfg->fc_nlinfo.nlh->nlmsg_flags |= NLM_F_CREATE; in ip6_route_multipath_add()
5418 /* An in-kernel notification should only be sent in case the new in ip6_route_multipath_add()
5426 if (rt_notif->fib6_nsiblings != nhn - 1) in ip6_route_multipath_add()
5431 err = call_fib6_multipath_entry_notifiers(info->nl_net, in ip6_route_multipath_add()
5433 nhn - 1, extack); in ip6_route_multipath_add()
5457 ip6_route_del(&nh->r_cfg, extack); in ip6_route_multipath_add()
5462 fib6_info_release(nh->fib6_info); in ip6_route_multipath_add()
5463 list_del(&nh->next); in ip6_route_multipath_add()
5480 remaining = cfg->fc_mp_len; in ip6_route_multipath_del()
5481 rtnh = (struct rtnexthop *)cfg->fc_mp; in ip6_route_multipath_del()
5486 if (rtnh->rtnh_ifindex) in ip6_route_multipath_del()
5487 r_cfg.fc_ifindex = rtnh->rtnh_ifindex; in ip6_route_multipath_del()
5527 !nexthop_find_by_id(sock_net(skb->sk), cfg.fc_nh_id)) { in inet6_rtm_delroute()
5529 return -EINVAL; in inet6_rtm_delroute()
5568 if (nh->fib_nh_lws) { in rt6_nh_nlmsg_size()
5570 *nexthop_len += lwtunnel_get_encap_size(nh->fib_nh_lws); in rt6_nh_nlmsg_size()
5582 if (f6i->nh) { in rt6_nlmsg_size()
5584 nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_nlmsg_size, in rt6_nlmsg_size()
5587 struct fib6_nh *nh = f6i->fib6_nh; in rt6_nlmsg_size()
5591 if (f6i->fib6_nsiblings) { in rt6_nlmsg_size()
5596 list_for_each_entry_rcu(sibling, &f6i->fib6_siblings, in rt6_nlmsg_size()
5598 rt6_nh_nlmsg_size(sibling->fib6_nh, &nexthop_len); in rt6_nlmsg_size()
5603 nexthop_len += lwtunnel_get_encap_size(nh->fib_nh_lws); in rt6_nlmsg_size()
5640 if (fib_nexthop_info(skb, &fib6_nh->nh_common, AF_INET6, in rt6_fill_node_nexthop()
5648 return -EMSGSIZE; in rt6_fill_node_nexthop()
5662 struct rtmsg *rtm; in rt6_fill_node() local
5665 nlh = nlmsg_put(skb, portid, seq, type, sizeof(*rtm), flags); in rt6_fill_node()
5667 return -EMSGSIZE; in rt6_fill_node()
5670 rt6_dst = &rt6->rt6i_dst; in rt6_fill_node()
5671 rt6_src = &rt6->rt6i_src; in rt6_fill_node()
5672 rt6_flags = rt6->rt6i_flags; in rt6_fill_node()
5674 rt6_dst = &rt->fib6_dst; in rt6_fill_node()
5675 rt6_src = &rt->fib6_src; in rt6_fill_node()
5676 rt6_flags = rt->fib6_flags; in rt6_fill_node()
5679 rtm = nlmsg_data(nlh); in rt6_fill_node()
5680 rtm->rtm_family = AF_INET6; in rt6_fill_node()
5681 rtm->rtm_dst_len = rt6_dst->plen; in rt6_fill_node()
5682 rtm->rtm_src_len = rt6_src->plen; in rt6_fill_node()
5683 rtm->rtm_tos = 0; in rt6_fill_node()
5684 if (rt->fib6_table) in rt6_fill_node()
5685 table = rt->fib6_table->tb6_id; in rt6_fill_node()
5688 rtm->rtm_table = table < 256 ? table : RT_TABLE_COMPAT; in rt6_fill_node()
5692 rtm->rtm_type = rt->fib6_type; in rt6_fill_node()
5693 rtm->rtm_flags = 0; in rt6_fill_node()
5694 rtm->rtm_scope = RT_SCOPE_UNIVERSE; in rt6_fill_node()
5695 rtm->rtm_protocol = rt->fib6_protocol; in rt6_fill_node()
5698 rtm->rtm_flags |= RTM_F_CLONED; in rt6_fill_node()
5703 rtm->rtm_dst_len = 128; in rt6_fill_node()
5704 } else if (rtm->rtm_dst_len) in rt6_fill_node()
5705 if (nla_put_in6_addr(skb, RTA_DST, &rt6_dst->addr)) in rt6_fill_node()
5711 rtm->rtm_src_len = 128; in rt6_fill_node()
5712 } else if (rtm->rtm_src_len && in rt6_fill_node()
5713 nla_put_in6_addr(skb, RTA_SRC, &rt6_src->addr)) in rt6_fill_node()
5718 if (ipv6_addr_is_multicast(&rt6_dst->addr)) { in rt6_fill_node()
5719 int err = ip6mr_get_route(net, skb, rtm, portid); in rt6_fill_node()
5736 if (rt->fib6_prefsrc.plen) { in rt6_fill_node()
5738 saddr_buf = rt->fib6_prefsrc.addr; in rt6_fill_node()
5743 pmetrics = dst ? dst_metrics_ptr(dst) : rt->fib6_metrics->metrics; in rt6_fill_node()
5747 if (nla_put_u32(skb, RTA_PRIORITY, rt->fib6_metric)) in rt6_fill_node()
5755 nla_put_in6_addr(skb, RTA_GATEWAY, &rt6->rt6i_gateway)) in rt6_fill_node()
5758 if (dst->dev && nla_put_u32(skb, RTA_OIF, dst->dev->ifindex)) in rt6_fill_node()
5761 if (dst->lwtstate && in rt6_fill_node()
5762 lwtunnel_fill_encap(skb, dst->lwtstate, RTA_ENCAP, RTA_ENCAP_TYPE) < 0) in rt6_fill_node()
5764 } else if (rt->fib6_nsiblings) { in rt6_fill_node()
5772 if (fib_add_nexthop(skb, &rt->fib6_nh->nh_common, in rt6_fill_node()
5773 rt->fib6_nh->fib_nh_weight, AF_INET6, in rt6_fill_node()
5779 list_for_each_entry_rcu(sibling, &rt->fib6_siblings, in rt6_fill_node()
5781 if (fib_add_nexthop(skb, &sibling->fib6_nh->nh_common, in rt6_fill_node()
5782 sibling->fib6_nh->fib_nh_weight, in rt6_fill_node()
5793 } else if (rt->nh) { in rt6_fill_node()
5794 if (nla_put_u32(skb, RTA_NH_ID, rt->nh->id)) in rt6_fill_node()
5797 if (nexthop_is_blackhole(rt->nh)) in rt6_fill_node()
5798 rtm->rtm_type = RTN_BLACKHOLE; in rt6_fill_node()
5800 if (READ_ONCE(net->ipv4.sysctl_nexthop_compat_mode) && in rt6_fill_node()
5801 rt6_fill_node_nexthop(skb, rt->nh, &nh_flags) < 0) in rt6_fill_node()
5804 rtm->rtm_flags |= nh_flags; in rt6_fill_node()
5806 if (fib_nexthop_info(skb, &rt->fib6_nh->nh_common, AF_INET6, in rt6_fill_node()
5810 rtm->rtm_flags |= nh_flags; in rt6_fill_node()
5814 expires = dst ? dst->expires : rt->expires; in rt6_fill_node()
5815 expires -= jiffies; in rt6_fill_node()
5819 if (READ_ONCE(rt->offload)) in rt6_fill_node()
5820 rtm->rtm_flags |= RTM_F_OFFLOAD; in rt6_fill_node()
5821 if (READ_ONCE(rt->trap)) in rt6_fill_node()
5822 rtm->rtm_flags |= RTM_F_TRAP; in rt6_fill_node()
5823 if (READ_ONCE(rt->offload_failed)) in rt6_fill_node()
5824 rtm->rtm_flags |= RTM_F_OFFLOAD_FAILED; in rt6_fill_node()
5827 if (rtnl_put_cacheinfo(skb, dst, 0, expires, dst ? dst->error : 0) < 0) in rt6_fill_node()
5839 return -EMSGSIZE; in rt6_fill_node()
5846 if (nh->fib_nh_dev == dev) in fib6_info_nh_uses_dev()
5855 if (f6i->nh) { in fib6_info_uses_dev()
5858 return !!nexthop_for_each_fib6_nh(f6i->nh, in fib6_info_uses_dev()
5863 if (f6i->fib6_nh->fib_nh_dev == dev) in fib6_info_uses_dev()
5866 if (f6i->fib6_nsiblings) { in fib6_info_uses_dev()
5870 &f6i->fib6_siblings, fib6_siblings) { in fib6_info_uses_dev()
5871 if (sibling->fib6_nh->fib_nh_dev == dev) in fib6_info_uses_dev()
5890 struct rt6_rtnl_dump_arg *dump = w->dump; in rt6_nh_dump_exceptions()
5900 hlist_for_each_entry(rt6_ex, &bucket->chain, hlist) { in rt6_nh_dump_exceptions()
5901 if (w->skip) { in rt6_nh_dump_exceptions()
5902 w->skip--; in rt6_nh_dump_exceptions()
5917 if (rt6_check_expired(rt6_ex->rt6i)) { in rt6_nh_dump_exceptions()
5918 w->count++; in rt6_nh_dump_exceptions()
5922 err = rt6_fill_node(dump->net, dump->skb, w->rt, in rt6_nh_dump_exceptions()
5923 &rt6_ex->rt6i->dst, NULL, NULL, 0, in rt6_nh_dump_exceptions()
5925 NETLINK_CB(dump->cb->skb).portid, in rt6_nh_dump_exceptions()
5926 dump->cb->nlh->nlmsg_seq, w->flags); in rt6_nh_dump_exceptions()
5930 w->count++; in rt6_nh_dump_exceptions()
5938 /* Return -1 if done with node, number of handled routes on partial dump */
5942 struct fib_dump_filter *filter = &arg->filter; in rt6_dump_route()
5944 struct net *net = arg->net; in rt6_dump_route()
5947 if (rt == net->ipv6.fib6_null_entry) in rt6_dump_route()
5948 return -1; in rt6_dump_route()
5950 if ((filter->flags & RTM_F_PREFIX) && in rt6_dump_route()
5951 !(rt->fib6_flags & RTF_PREFIX_RT)) { in rt6_dump_route()
5953 return -1; in rt6_dump_route()
5955 if (filter->filter_set && in rt6_dump_route()
5956 ((filter->rt_type && rt->fib6_type != filter->rt_type) || in rt6_dump_route()
5957 (filter->dev && !fib6_info_uses_dev(rt, filter->dev)) || in rt6_dump_route()
5958 (filter->protocol && rt->fib6_protocol != filter->protocol))) { in rt6_dump_route()
5959 return -1; in rt6_dump_route()
5962 if (filter->filter_set || in rt6_dump_route()
5963 !filter->dump_routes || !filter->dump_exceptions) { in rt6_dump_route()
5967 if (filter->dump_routes) { in rt6_dump_route()
5969 skip--; in rt6_dump_route()
5971 if (rt6_fill_node(net, arg->skb, rt, NULL, NULL, NULL, in rt6_dump_route()
5973 NETLINK_CB(arg->cb->skb).portid, in rt6_dump_route()
5974 arg->cb->nlh->nlmsg_seq, flags)) { in rt6_dump_route()
5981 if (filter->dump_exceptions) { in rt6_dump_route()
5990 if (rt->nh) { in rt6_dump_route()
5991 err = nexthop_for_each_fib6_nh(rt->nh, in rt6_dump_route()
5995 err = rt6_nh_dump_exceptions(rt->fib6_nh, &w); in rt6_dump_route()
6003 return -1; in rt6_dump_route()
6011 struct rtmsg *rtm; in inet6_rtm_valid_getroute_req() local
6014 if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*rtm))) { in inet6_rtm_valid_getroute_req()
6017 return -EINVAL; in inet6_rtm_valid_getroute_req()
6021 return nlmsg_parse_deprecated(nlh, sizeof(*rtm), tb, RTA_MAX, in inet6_rtm_valid_getroute_req()
6024 rtm = nlmsg_data(nlh); in inet6_rtm_valid_getroute_req()
6025 if ((rtm->rtm_src_len && rtm->rtm_src_len != 128) || in inet6_rtm_valid_getroute_req()
6026 (rtm->rtm_dst_len && rtm->rtm_dst_len != 128) || in inet6_rtm_valid_getroute_req()
6027 rtm->rtm_table || rtm->rtm_protocol || rtm->rtm_scope || in inet6_rtm_valid_getroute_req()
6028 rtm->rtm_type) { in inet6_rtm_valid_getroute_req()
6030 return -EINVAL; in inet6_rtm_valid_getroute_req()
6032 if (rtm->rtm_flags & ~RTM_F_FIB_MATCH) { in inet6_rtm_valid_getroute_req()
6035 return -EINVAL; in inet6_rtm_valid_getroute_req()
6038 err = nlmsg_parse_deprecated_strict(nlh, sizeof(*rtm), tb, RTA_MAX, in inet6_rtm_valid_getroute_req()
6043 if ((tb[RTA_SRC] && !rtm->rtm_src_len) || in inet6_rtm_valid_getroute_req()
6044 (tb[RTA_DST] && !rtm->rtm_dst_len)) { in inet6_rtm_valid_getroute_req()
6046 return -EINVAL; in inet6_rtm_valid_getroute_req()
6066 return -EINVAL; in inet6_rtm_valid_getroute_req()
6076 struct net *net = sock_net(in_skb->sk); in inet6_rtm_getroute()
6083 struct rtmsg *rtm; in inet6_rtm_getroute() local
6091 err = -EINVAL; in inet6_rtm_getroute()
6092 rtm = nlmsg_data(nlh); in inet6_rtm_getroute()
6093 fl6.flowlabel = ip6_make_flowinfo(rtm->rtm_tos, 0); in inet6_rtm_getroute()
6094 fibmatch = !!(rtm->rtm_flags & RTM_F_FIB_MATCH); in inet6_rtm_getroute()
6148 err = -ENODEV; in inet6_rtm_getroute()
6168 if (rt->dst.error) { in inet6_rtm_getroute()
6169 err = rt->dst.error; in inet6_rtm_getroute()
6174 if (rt == net->ipv6.ip6_null_entry) { in inet6_rtm_getroute()
6175 err = rt->dst.error; in inet6_rtm_getroute()
6183 err = -ENOBUFS; in inet6_rtm_getroute()
6187 skb_dst_set(skb, &rt->dst); in inet6_rtm_getroute()
6190 from = rcu_dereference(rt->from); in inet6_rtm_getroute()
6196 nlh->nlmsg_seq, 0); in inet6_rtm_getroute()
6201 nlh->nlmsg_seq, 0); in inet6_rtm_getroute()
6203 err = -ENETUNREACH; in inet6_rtm_getroute()
6221 struct net *net = info->nl_net; in inet6_rt_notify()
6225 err = -ENOBUFS; in inet6_rt_notify()
6226 seq = info->nlh ? info->nlh->nlmsg_seq : 0; in inet6_rt_notify()
6233 event, info->portid, seq, nlm_flags); in inet6_rt_notify()
6235 /* -EMSGSIZE implies BUG in rt6_nlmsg_size() */ in inet6_rt_notify()
6236 WARN_ON(err == -EMSGSIZE); in inet6_rt_notify()
6240 rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, in inet6_rt_notify()
6241 info->nlh, GFP_ATOMIC); in inet6_rt_notify()
6251 u32 seq = info->nlh ? info->nlh->nlmsg_seq : 0; in fib6_rt_update()
6253 int err = -ENOBUFS; in fib6_rt_update()
6260 RTM_NEWROUTE, info->portid, seq, NLM_F_REPLACE); in fib6_rt_update()
6262 /* -EMSGSIZE implies BUG in rt6_nlmsg_size() */ in fib6_rt_update()
6263 WARN_ON(err == -EMSGSIZE); in fib6_rt_update()
6267 rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, in fib6_rt_update()
6268 info->nlh, gfp_any()); in fib6_rt_update()
6281 if (READ_ONCE(f6i->offload) == offload && in fib6_info_hw_flags_set()
6282 READ_ONCE(f6i->trap) == trap && in fib6_info_hw_flags_set()
6283 READ_ONCE(f6i->offload_failed) == offload_failed) in fib6_info_hw_flags_set()
6286 WRITE_ONCE(f6i->offload, offload); in fib6_info_hw_flags_set()
6287 WRITE_ONCE(f6i->trap, trap); in fib6_info_hw_flags_set()
6290 if (net->ipv6.sysctl.fib_notify_on_flag_change == 2 && in fib6_info_hw_flags_set()
6291 READ_ONCE(f6i->offload_failed) == offload_failed) in fib6_info_hw_flags_set()
6294 WRITE_ONCE(f6i->offload_failed, offload_failed); in fib6_info_hw_flags_set()
6296 if (!rcu_access_pointer(f6i->fib6_node)) in fib6_info_hw_flags_set()
6302 if (!net->ipv6.sysctl.fib_notify_on_flag_change) in fib6_info_hw_flags_set()
6307 err = -ENOBUFS; in fib6_info_hw_flags_set()
6314 /* -EMSGSIZE implies BUG in rt6_nlmsg_size() */ in fib6_info_hw_flags_set()
6315 WARN_ON(err == -EMSGSIZE); in fib6_info_hw_flags_set()
6334 if (!(dev->flags & IFF_LOOPBACK)) in ip6_route_dev_notify()
6338 net->ipv6.fib6_null_entry->fib6_nh->fib_nh_dev = dev; in ip6_route_dev_notify()
6339 net->ipv6.ip6_null_entry->dst.dev = dev; in ip6_route_dev_notify()
6340 net->ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(dev); in ip6_route_dev_notify()
6342 net->ipv6.ip6_prohibit_entry->dst.dev = dev; in ip6_route_dev_notify()
6343 net->ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(dev); in ip6_route_dev_notify()
6344 net->ipv6.ip6_blk_hole_entry->dst.dev = dev; in ip6_route_dev_notify()
6345 net->ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(dev); in ip6_route_dev_notify()
6348 dev->reg_state != NETREG_UNREGISTERED) { in ip6_route_dev_notify()
6352 in6_dev_put_clear(&net->ipv6.ip6_null_entry->rt6i_idev); in ip6_route_dev_notify()
6354 in6_dev_put_clear(&net->ipv6.ip6_prohibit_entry->rt6i_idev); in ip6_route_dev_notify()
6355 in6_dev_put_clear(&net->ipv6.ip6_blk_hole_entry->rt6i_idev); in ip6_route_dev_notify()
6369 struct net *net = (struct net *)seq->private; in rt6_stats_seq_show()
6371 net->ipv6.rt6_stats->fib_nodes, in rt6_stats_seq_show()
6372 net->ipv6.rt6_stats->fib_route_nodes, in rt6_stats_seq_show()
6373 atomic_read(&net->ipv6.rt6_stats->fib_rt_alloc), in rt6_stats_seq_show()
6374 net->ipv6.rt6_stats->fib_rt_entries, in rt6_stats_seq_show()
6375 net->ipv6.rt6_stats->fib_rt_cache, in rt6_stats_seq_show()
6376 dst_entries_get_slow(&net->ipv6.ip6_dst_ops), in rt6_stats_seq_show()
6377 net->ipv6.rt6_stats->fib_discarded_routes); in rt6_stats_seq_show()
6392 return -EINVAL; in ipv6_sysctl_rtcache_flush()
6398 net = (struct net *)ctl->extra1; in ipv6_sysctl_rtcache_flush()
6399 delay = net->ipv6.sysctl.flush_delay; in ipv6_sysctl_rtcache_flush()
6496 table[0].data = &net->ipv6.sysctl.ip6_rt_max_size; in ipv6_route_sysctl_init()
6497 table[1].data = &net->ipv6.ip6_dst_ops.gc_thresh; in ipv6_route_sysctl_init()
6498 table[2].data = &net->ipv6.sysctl.flush_delay; in ipv6_route_sysctl_init()
6500 table[3].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval; in ipv6_route_sysctl_init()
6501 table[4].data = &net->ipv6.sysctl.ip6_rt_gc_timeout; in ipv6_route_sysctl_init()
6502 table[5].data = &net->ipv6.sysctl.ip6_rt_gc_interval; in ipv6_route_sysctl_init()
6503 table[6].data = &net->ipv6.sysctl.ip6_rt_gc_elasticity; in ipv6_route_sysctl_init()
6504 table[7].data = &net->ipv6.sysctl.ip6_rt_mtu_expires; in ipv6_route_sysctl_init()
6505 table[8].data = &net->ipv6.sysctl.ip6_rt_min_advmss; in ipv6_route_sysctl_init()
6506 table[9].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval; in ipv6_route_sysctl_init()
6507 table[10].data = &net->ipv6.sysctl.skip_notify_on_dev_down; in ipv6_route_sysctl_init()
6510 if (net->user_ns != &init_user_ns) in ipv6_route_sysctl_init()
6520 if (net->user_ns != &init_user_ns) in ipv6_route_sysctl_table_size()
6529 int ret = -ENOMEM; in ip6_route_net_init()
6531 memcpy(&net->ipv6.ip6_dst_ops, &ip6_dst_ops_template, in ip6_route_net_init()
6532 sizeof(net->ipv6.ip6_dst_ops)); in ip6_route_net_init()
6534 if (dst_entries_init(&net->ipv6.ip6_dst_ops) < 0) in ip6_route_net_init()
6537 net->ipv6.fib6_null_entry = fib6_info_alloc(GFP_KERNEL, true); in ip6_route_net_init()
6538 if (!net->ipv6.fib6_null_entry) in ip6_route_net_init()
6540 memcpy(net->ipv6.fib6_null_entry, &fib6_null_entry_template, in ip6_route_net_init()
6541 sizeof(*net->ipv6.fib6_null_entry)); in ip6_route_net_init()
6543 net->ipv6.ip6_null_entry = kmemdup(&ip6_null_entry_template, in ip6_route_net_init()
6544 sizeof(*net->ipv6.ip6_null_entry), in ip6_route_net_init()
6546 if (!net->ipv6.ip6_null_entry) in ip6_route_net_init()
6548 net->ipv6.ip6_null_entry->dst.ops = &net->ipv6.ip6_dst_ops; in ip6_route_net_init()
6549 dst_init_metrics(&net->ipv6.ip6_null_entry->dst, in ip6_route_net_init()
6551 INIT_LIST_HEAD(&net->ipv6.ip6_null_entry->dst.rt_uncached); in ip6_route_net_init()
6554 net->ipv6.fib6_has_custom_rules = false; in ip6_route_net_init()
6555 net->ipv6.ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template, in ip6_route_net_init()
6556 sizeof(*net->ipv6.ip6_prohibit_entry), in ip6_route_net_init()
6558 if (!net->ipv6.ip6_prohibit_entry) in ip6_route_net_init()
6560 net->ipv6.ip6_prohibit_entry->dst.ops = &net->ipv6.ip6_dst_ops; in ip6_route_net_init()
6561 dst_init_metrics(&net->ipv6.ip6_prohibit_entry->dst, in ip6_route_net_init()
6563 INIT_LIST_HEAD(&net->ipv6.ip6_prohibit_entry->dst.rt_uncached); in ip6_route_net_init()
6565 net->ipv6.ip6_blk_hole_entry = kmemdup(&ip6_blk_hole_entry_template, in ip6_route_net_init()
6566 sizeof(*net->ipv6.ip6_blk_hole_entry), in ip6_route_net_init()
6568 if (!net->ipv6.ip6_blk_hole_entry) in ip6_route_net_init()
6570 net->ipv6.ip6_blk_hole_entry->dst.ops = &net->ipv6.ip6_dst_ops; in ip6_route_net_init()
6571 dst_init_metrics(&net->ipv6.ip6_blk_hole_entry->dst, in ip6_route_net_init()
6573 INIT_LIST_HEAD(&net->ipv6.ip6_blk_hole_entry->dst.rt_uncached); in ip6_route_net_init()
6575 net->ipv6.fib6_routes_require_src = 0; in ip6_route_net_init()
6579 net->ipv6.sysctl.flush_delay = 0; in ip6_route_net_init()
6580 net->ipv6.sysctl.ip6_rt_max_size = INT_MAX; in ip6_route_net_init()
6581 net->ipv6.sysctl.ip6_rt_gc_min_interval = HZ / 2; in ip6_route_net_init()
6582 net->ipv6.sysctl.ip6_rt_gc_timeout = 60*HZ; in ip6_route_net_init()
6583 net->ipv6.sysctl.ip6_rt_gc_interval = 30*HZ; in ip6_route_net_init()
6584 net->ipv6.sysctl.ip6_rt_gc_elasticity = 9; in ip6_route_net_init()
6585 net->ipv6.sysctl.ip6_rt_mtu_expires = 10*60*HZ; in ip6_route_net_init()
6586 net->ipv6.sysctl.ip6_rt_min_advmss = IPV6_MIN_MTU - 20 - 40; in ip6_route_net_init()
6587 net->ipv6.sysctl.skip_notify_on_dev_down = 0; in ip6_route_net_init()
6589 atomic_set(&net->ipv6.ip6_rt_gc_expire, 30*HZ); in ip6_route_net_init()
6597 kfree(net->ipv6.ip6_prohibit_entry); in ip6_route_net_init()
6599 kfree(net->ipv6.ip6_null_entry); in ip6_route_net_init()
6602 kfree(net->ipv6.fib6_null_entry); in ip6_route_net_init()
6604 dst_entries_destroy(&net->ipv6.ip6_dst_ops); in ip6_route_net_init()
6611 kfree(net->ipv6.fib6_null_entry); in ip6_route_net_exit()
6612 kfree(net->ipv6.ip6_null_entry); in ip6_route_net_exit()
6614 kfree(net->ipv6.ip6_prohibit_entry); in ip6_route_net_exit()
6615 kfree(net->ipv6.ip6_blk_hole_entry); in ip6_route_net_exit()
6617 dst_entries_destroy(&net->ipv6.ip6_dst_ops); in ip6_route_net_exit()
6623 if (!proc_create_net("ipv6_route", 0, net->proc_net, in ip6_route_net_init_late()
6626 return -ENOMEM; in ip6_route_net_init_late()
6628 if (!proc_create_net_single("rt6_stats", 0444, net->proc_net, in ip6_route_net_init_late()
6630 remove_proc_entry("ipv6_route", net->proc_net); in ip6_route_net_init_late()
6631 return -ENOMEM; in ip6_route_net_init_late()
6640 remove_proc_entry("ipv6_route", net->proc_net); in ip6_route_net_exit_late()
6641 remove_proc_entry("rt6_stats", net->proc_net); in ip6_route_net_exit_late()
6655 return -ENOMEM; in ipv6_inetpeer_init()
6657 net->ipv6.peers = bp; in ipv6_inetpeer_init()
6663 struct inet_peer_base *bp = net->ipv6.peers; in ipv6_inetpeer_exit()
6665 net->ipv6.peers = NULL; in ipv6_inetpeer_exit()
6682 .priority = ADDRCONF_NOTIFY_PRIORITY - 10,
6690 init_net.ipv6.fib6_null_entry->fib6_nh->fib_nh_dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6691 init_net.ipv6.ip6_null_entry->dst.dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6692 init_net.ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev); in ip6_route_init_special_entries()
6694 init_net.ipv6.ip6_prohibit_entry->dst.dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6695 init_net.ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev); in ip6_route_init_special_entries()
6696 init_net.ipv6.ip6_blk_hole_entry->dst.dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6697 init_net.ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev); in ip6_route_init_special_entries()
6743 ret = -ENOMEM; in ip6_route_init()
6811 INIT_LIST_HEAD(&ul->head); in ip6_route_init()
6812 INIT_LIST_HEAD(&ul->quarantine); in ip6_route_init()
6813 spin_lock_init(&ul->lock); in ip6_route_init()