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()
421 struct fib6_info *match = res->f6i; in fib6_select_path()
424 if (!match->nh && (!match->fib6_nsiblings || have_oif_match)) in fib6_select_path()
427 if (match->nh && have_oif_match && res->nh) in fib6_select_path()
431 IP6CB(skb)->flags |= IP6SKB_MULTIPATH; in fib6_select_path()
434 * case it will always be non-zero. Otherwise now is the time to do it. in fib6_select_path()
436 if (!fl6->mp_hash && in fib6_select_path()
437 (!match->nh || nexthop_is_multipath(match->nh))) in fib6_select_path()
438 fl6->mp_hash = rt6_multipath_hash(net, fl6, skb, NULL); in fib6_select_path()
440 if (unlikely(match->nh)) { in fib6_select_path()
441 nexthop_path_fib6_result(res, fl6->mp_hash); in fib6_select_path()
445 if (fl6->mp_hash <= atomic_read(&match->fib6_nh->fib_nh_upper_bound)) in fib6_select_path()
448 list_for_each_entry_rcu(sibling, &match->fib6_siblings, in fib6_select_path()
450 const struct fib6_nh *nh = sibling->fib6_nh; in fib6_select_path()
453 nh_upper_bound = atomic_read(&nh->fib_nh_upper_bound); in fib6_select_path()
454 if (fl6->mp_hash > nh_upper_bound) in fib6_select_path()
456 if (rt6_score_route(nh, sibling->fib6_flags, oif, strict) < 0) in fib6_select_path()
463 res->f6i = match; in fib6_select_path()
464 res->nh = match->fib6_nh; in fib6_select_path()
476 if (nh->fib_nh_flags & RTNH_F_DEAD) in __rt6_device_match()
479 dev = nh->fib_nh_dev; in __rt6_device_match()
481 if (dev->ifindex == oif) in __rt6_device_match()
504 arg->nh = nh; in __rt6_nh_dev_match()
505 return __rt6_device_match(arg->net, nh, arg->saddr, arg->oif, in __rt6_nh_dev_match()
506 arg->flags); in __rt6_nh_dev_match()
534 struct fib6_info *f6i = res->f6i; in rt6_device_match()
539 if (unlikely(f6i->nh)) { in rt6_device_match()
540 nh = nexthop_fib6_nh(f6i->nh); in rt6_device_match()
541 if (nexthop_is_blackhole(f6i->nh)) in rt6_device_match()
544 nh = f6i->fib6_nh; in rt6_device_match()
546 if (!(nh->fib_nh_flags & RTNH_F_DEAD)) in rt6_device_match()
550 for (spf6i = f6i; spf6i; spf6i = rcu_dereference(spf6i->fib6_next)) { in rt6_device_match()
553 if (unlikely(spf6i->nh)) { in rt6_device_match()
554 nh = rt6_nh_dev_match(net, spf6i->nh, res, saddr, in rt6_device_match()
559 nh = spf6i->fib6_nh; in rt6_device_match()
564 res->f6i = spf6i; in rt6_device_match()
570 res->f6i = net->ipv6.fib6_null_entry; in rt6_device_match()
571 nh = res->f6i->fib6_nh; in rt6_device_match()
575 if (unlikely(f6i->nh)) { in rt6_device_match()
576 nh = nexthop_fib6_nh(f6i->nh); in rt6_device_match()
577 if (nexthop_is_blackhole(f6i->nh)) in rt6_device_match()
580 nh = f6i->fib6_nh; in rt6_device_match()
583 if (nh->fib_nh_flags & RTNH_F_DEAD) { in rt6_device_match()
584 res->f6i = net->ipv6.fib6_null_entry; in rt6_device_match()
585 nh = res->f6i->fib6_nh; in rt6_device_match()
588 res->nh = nh; in rt6_device_match()
589 res->fib6_type = res->f6i->fib6_type; in rt6_device_match()
590 res->fib6_flags = res->f6i->fib6_flags; in rt6_device_match()
594 res->fib6_flags |= RTF_REJECT; in rt6_device_match()
595 res->fib6_type = RTN_BLACKHOLE; in rt6_device_match()
596 res->nh = nh; in rt6_device_match()
613 addrconf_addr_solict_mult(&work->target, &mcaddr); in rt6_probe_deferred()
614 ndisc_send_ns(work->dev, &work->target, &mcaddr, NULL, 0); in rt6_probe_deferred()
615 netdev_put(work->dev, &work->dev_tracker); in rt6_probe_deferred()
633 * Router Reachability Probe MUST be rate-limited in rt6_probe()
636 if (!fib6_nh->fib_nh_gw_family) in rt6_probe()
639 nh_gw = &fib6_nh->fib_nh_gw6; in rt6_probe()
640 dev = fib6_nh->fib_nh_dev; in rt6_probe()
642 last_probe = READ_ONCE(fib6_nh->last_probe); in rt6_probe()
648 if (READ_ONCE(neigh->nud_state) & NUD_VALID) in rt6_probe()
651 write_lock_bh(&neigh->lock); in rt6_probe()
652 if (!(neigh->nud_state & NUD_VALID) && in rt6_probe()
654 neigh->updated + idev->cnf.rtr_probe_interval)) { in rt6_probe()
659 write_unlock_bh(&neigh->lock); in rt6_probe()
661 idev->cnf.rtr_probe_interval)) { in rt6_probe()
665 if (!work || cmpxchg(&fib6_nh->last_probe, in rt6_probe()
669 INIT_WORK(&work->work, rt6_probe_deferred); in rt6_probe()
670 work->target = *nh_gw; in rt6_probe()
671 netdev_hold(dev, &work->dev_tracker, GFP_ATOMIC); in rt6_probe()
672 work->dev = dev; in rt6_probe()
673 schedule_work(&work->work); in rt6_probe()
694 neigh = __ipv6_neigh_lookup_noref(fib6_nh->fib_nh_dev, in rt6_check_neigh()
695 &fib6_nh->fib_nh_gw6); in rt6_check_neigh()
697 u8 nud_state = READ_ONCE(neigh->nud_state); in rt6_check_neigh()
721 if (!oif || nh->fib_nh_dev->ifindex == oif) in rt6_score_route()
730 !(fib6_flags & RTF_NONEXTHOP) && nh->fib_nh_gw_family) { in rt6_score_route()
745 if (nh->fib_nh_flags & RTNH_F_DEAD) in find_match()
748 if (ip6_ignore_linkdown(nh->fib_nh_dev) && in find_match()
749 nh->fib_nh_flags & RTNH_F_LINKDOWN && in find_match()
787 arg->nh = nh; in rt6_nh_find_match()
788 return find_match(nh, arg->flags, arg->oif, arg->strict, in rt6_nh_find_match()
789 arg->mpri, arg->do_rr); in rt6_nh_find_match()
801 f6i = rcu_dereference(f6i->fib6_next)) { in __find_rr_leaf()
805 if (cont && f6i->fib6_metric != metric) { in __find_rr_leaf()
813 if (unlikely(f6i->nh)) { in __find_rr_leaf()
815 .flags = f6i->fib6_flags, in __find_rr_leaf()
822 if (nexthop_is_blackhole(f6i->nh)) { in __find_rr_leaf()
823 res->fib6_flags = RTF_REJECT; in __find_rr_leaf()
824 res->fib6_type = RTN_BLACKHOLE; in __find_rr_leaf()
825 res->f6i = f6i; in __find_rr_leaf()
826 res->nh = nexthop_fib6_nh(f6i->nh); in __find_rr_leaf()
829 if (nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_find_match, in __find_rr_leaf()
835 nh = f6i->fib6_nh; in __find_rr_leaf()
836 if (find_match(nh, f6i->fib6_flags, oif, strict, in __find_rr_leaf()
841 res->f6i = f6i; in __find_rr_leaf()
842 res->nh = nh; in __find_rr_leaf()
843 res->fib6_flags = f6i->fib6_flags; in __find_rr_leaf()
844 res->fib6_type = f6i->fib6_type; in __find_rr_leaf()
853 u32 metric = rr_head->fib6_metric; in find_rr_leaf()
855 int mpri = -1; in find_rr_leaf()
863 if (res->f6i || !cont) in find_rr_leaf()
873 struct fib6_info *leaf = rcu_dereference(fn->leaf); in rt6_select()
879 res->f6i = NULL; in rt6_select()
881 if (!leaf || leaf == net->ipv6.fib6_null_entry) in rt6_select()
884 rt0 = rcu_dereference(fn->rr_ptr); in rt6_select()
889 * and fn->leaf does not points to its child's leaf in rt6_select()
893 key_plen = rt0->fib6_dst.plen; in rt6_select()
895 if (rt0->fib6_src.plen) in rt6_select()
896 key_plen = rt0->fib6_src.plen; in rt6_select()
898 if (fn->fn_bit != key_plen) in rt6_select()
903 struct fib6_info *next = rcu_dereference(rt0->fib6_next); in rt6_select()
905 /* no entries matched; do round-robin */ in rt6_select()
906 if (!next || next->fib6_metric != rt0->fib6_metric) in rt6_select()
910 spin_lock_bh(&leaf->fib6_table->tb6_lock); in rt6_select()
912 if (next->fib6_node) in rt6_select()
913 rcu_assign_pointer(fn->rr_ptr, next); in rt6_select()
914 spin_unlock_bh(&leaf->fib6_table->tb6_lock); in rt6_select()
919 if (!res->f6i) { in rt6_select()
920 res->f6i = net->ipv6.fib6_null_entry; in rt6_select()
921 res->nh = res->f6i->fib6_nh; in rt6_select()
922 res->fib6_flags = res->f6i->fib6_flags; in rt6_select()
923 res->fib6_type = res->f6i->fib6_type; in rt6_select()
929 return (res->f6i->fib6_flags & RTF_NONEXTHOP) || in rt6_is_gw_or_nonexthop()
930 res->nh->fib_nh_gw_family; in rt6_is_gw_or_nonexthop()
945 return -EINVAL; in rt6_route_rcv()
949 if (rinfo->length > 3) { in rt6_route_rcv()
950 return -EINVAL; in rt6_route_rcv()
951 } else if (rinfo->prefix_len > 128) { in rt6_route_rcv()
952 return -EINVAL; in rt6_route_rcv()
953 } else if (rinfo->prefix_len > 64) { in rt6_route_rcv()
954 if (rinfo->length < 2) { in rt6_route_rcv()
955 return -EINVAL; in rt6_route_rcv()
957 } else if (rinfo->prefix_len > 0) { in rt6_route_rcv()
958 if (rinfo->length < 1) { in rt6_route_rcv()
959 return -EINVAL; in rt6_route_rcv()
963 pref = rinfo->route_pref; in rt6_route_rcv()
965 return -EINVAL; in rt6_route_rcv()
967 lifetime = addrconf_timeout_fixup(ntohl(rinfo->lifetime), HZ); in rt6_route_rcv()
969 if (rinfo->length == 3) in rt6_route_rcv()
970 prefix = (struct in6_addr *)rinfo->prefix; in rt6_route_rcv()
974 (struct in6_addr *)rinfo->prefix, in rt6_route_rcv()
975 rinfo->prefix_len); in rt6_route_rcv()
979 if (rinfo->prefix_len == 0) in rt6_route_rcv()
982 rt = rt6_get_route_info(net, prefix, rinfo->prefix_len, in rt6_route_rcv()
991 rt = rt6_add_route_info(net, prefix, rinfo->prefix_len, gwaddr, in rt6_route_rcv()
994 rt->fib6_flags = RTF_ROUTEINFO | in rt6_route_rcv()
995 (rt->fib6_flags & ~RTF_PREF_MASK) | RTF_PREF(pref); in rt6_route_rcv()
1016 struct net_device *dev = res->nh->fib_nh_dev; in ip6_rt_get_dev_rcu()
1018 if (res->fib6_flags & (RTF_LOCAL | RTF_ANYCAST)) { in ip6_rt_get_dev_rcu()
1019 /* for copies of local routes, dst->dev needs to be the in ip6_rt_get_dev_rcu()
1024 !rt6_need_strict(&res->f6i->fib6_dst.addr)) in ip6_rt_get_dev_rcu()
1027 dev = dev_net(dev)->loopback_dev; in ip6_rt_get_dev_rcu()
1043 [RTN_BLACKHOLE] = -EINVAL,
1044 [RTN_UNREACHABLE] = -EHOSTUNREACH,
1045 [RTN_PROHIBIT] = -EACCES,
1046 [RTN_THROW] = -EAGAIN,
1047 [RTN_NAT] = -EINVAL,
1048 [RTN_XRESOLVE] = -EINVAL,
1060 if (rt->dst_nocount) in fib6_info_dst_flags()
1062 if (rt->dst_nopolicy) in fib6_info_dst_flags()
1070 rt->dst.error = ip6_rt_type_to_error(fib6_type); in ip6_rt_init_dst_reject()
1074 rt->dst.output = dst_discard_out; in ip6_rt_init_dst_reject()
1075 rt->dst.input = dst_discard; in ip6_rt_init_dst_reject()
1078 rt->dst.output = ip6_pkt_prohibit_out; in ip6_rt_init_dst_reject()
1079 rt->dst.input = ip6_pkt_prohibit; in ip6_rt_init_dst_reject()
1084 rt->dst.output = ip6_pkt_discard_out; in ip6_rt_init_dst_reject()
1085 rt->dst.input = ip6_pkt_discard; in ip6_rt_init_dst_reject()
1092 struct fib6_info *f6i = res->f6i; in ip6_rt_init_dst()
1094 if (res->fib6_flags & RTF_REJECT) { in ip6_rt_init_dst()
1095 ip6_rt_init_dst_reject(rt, res->fib6_type); in ip6_rt_init_dst()
1099 rt->dst.error = 0; in ip6_rt_init_dst()
1100 rt->dst.output = ip6_output; in ip6_rt_init_dst()
1102 if (res->fib6_type == RTN_LOCAL || res->fib6_type == RTN_ANYCAST) { in ip6_rt_init_dst()
1103 rt->dst.input = ip6_input; in ip6_rt_init_dst()
1104 } else if (ipv6_addr_type(&f6i->fib6_dst.addr) & IPV6_ADDR_MULTICAST) { in ip6_rt_init_dst()
1105 rt->dst.input = ip6_mc_input; in ip6_rt_init_dst()
1107 rt->dst.input = ip6_forward; in ip6_rt_init_dst()
1110 if (res->nh->fib_nh_lws) { in ip6_rt_init_dst()
1111 rt->dst.lwtstate = lwtstate_get(res->nh->fib_nh_lws); in ip6_rt_init_dst()
1112 lwtunnel_set_redirect(&rt->dst); in ip6_rt_init_dst()
1115 rt->dst.lastuse = jiffies; in ip6_rt_init_dst()
1121 rt->rt6i_flags &= ~RTF_EXPIRES; in rt6_set_from()
1122 rcu_assign_pointer(rt->from, from); in rt6_set_from()
1123 ip_dst_init_metrics(&rt->dst, from->fib6_metrics); in rt6_set_from()
1129 const struct fib6_nh *nh = res->nh; in ip6_rt_copy_init()
1130 const struct net_device *dev = nh->fib_nh_dev; in ip6_rt_copy_init()
1131 struct fib6_info *f6i = res->f6i; in ip6_rt_copy_init()
1135 rt->rt6i_dst = f6i->fib6_dst; in ip6_rt_copy_init()
1136 rt->rt6i_idev = dev ? in6_dev_get(dev) : NULL; in ip6_rt_copy_init()
1137 rt->rt6i_flags = res->fib6_flags; in ip6_rt_copy_init()
1138 if (nh->fib_nh_gw_family) { in ip6_rt_copy_init()
1139 rt->rt6i_gateway = nh->fib_nh_gw6; in ip6_rt_copy_init()
1140 rt->rt6i_flags |= RTF_GATEWAY; in ip6_rt_copy_init()
1144 rt->rt6i_src = f6i->fib6_src; in ip6_rt_copy_init()
1153 if (fn->fn_flags & RTN_TL_ROOT) in fib6_backtrack()
1155 pn = rcu_dereference(fn->parent); in fib6_backtrack()
1161 if (fn->fn_flags & RTN_RTINFO) in fib6_backtrack()
1170 if (dst_hold_safe(&rt->dst)) in ip6_hold_safe()
1173 rt = net->ipv6.ip6_null_entry; in ip6_hold_safe()
1174 dst_hold(&rt->dst); in ip6_hold_safe()
1185 struct net_device *dev = res->nh->fib_nh_dev; in ip6_create_rt_rcu()
1186 struct fib6_info *f6i = res->f6i; in ip6_create_rt_rcu()
1204 nrt = dev_net(dev)->ipv6.ip6_null_entry; in ip6_create_rt_rcu()
1205 dst_hold(&nrt->dst); in ip6_create_rt_rcu()
1220 fn = fib6_node_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr); in ip6_pol_route_lookup()
1222 res.f6i = rcu_dereference(fn->leaf); in ip6_pol_route_lookup()
1224 res.f6i = net->ipv6.fib6_null_entry; in ip6_pol_route_lookup()
1226 rt6_device_match(net, &res, &fl6->saddr, fl6->flowi6_oif, in ip6_pol_route_lookup()
1229 if (res.f6i == net->ipv6.fib6_null_entry) { in ip6_pol_route_lookup()
1230 fn = fib6_backtrack(fn, &fl6->saddr); in ip6_pol_route_lookup()
1234 rt = net->ipv6.ip6_null_entry; in ip6_pol_route_lookup()
1235 dst_hold(&rt->dst); in ip6_pol_route_lookup()
1241 fib6_select_path(net, &res, fl6, fl6->flowi6_oif, in ip6_pol_route_lookup()
1242 fl6->flowi6_oif != 0, skb, flags); in ip6_pol_route_lookup()
1245 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route_lookup()
1248 dst_use_noref(&rt->dst, jiffies); in ip6_pol_route_lookup()
1286 if (dst->error == 0) in rt6_lookup()
1295 /* ip6_ins_rt is called with FREE table->tb6_lock.
1307 table = rt->fib6_table; in __ip6_ins_rt()
1308 spin_lock_bh(&table->tb6_lock); in __ip6_ins_rt()
1309 err = fib6_add(&table->tb6_root, rt, info, extack); in __ip6_ins_rt()
1310 spin_unlock_bh(&table->tb6_lock); in __ip6_ins_rt()
1326 struct fib6_info *f6i = res->f6i; in ip6_rt_cache_alloc()
1345 rt->rt6i_flags |= RTF_CACHE; in ip6_rt_cache_alloc()
1346 rt->rt6i_dst.addr = *daddr; in ip6_rt_cache_alloc()
1347 rt->rt6i_dst.plen = 128; in ip6_rt_cache_alloc()
1350 if (f6i->fib6_dst.plen != 128 && in ip6_rt_cache_alloc()
1351 ipv6_addr_equal(&f6i->fib6_dst.addr, daddr)) in ip6_rt_cache_alloc()
1352 rt->rt6i_flags |= RTF_ANYCAST; in ip6_rt_cache_alloc()
1354 if (rt->rt6i_src.plen && saddr) { in ip6_rt_cache_alloc()
1355 rt->rt6i_src.addr = *saddr; in ip6_rt_cache_alloc()
1356 rt->rt6i_src.plen = 128; in ip6_rt_cache_alloc()
1366 struct fib6_info *f6i = res->f6i; in ip6_rt_pcpu_alloc()
1383 pcpu_rt->rt6i_flags |= RTF_PCPU; in ip6_rt_pcpu_alloc()
1385 if (f6i->nh) in ip6_rt_pcpu_alloc()
1386 pcpu_rt->sernum = rt_genid_ipv6(dev_net(dev)); in ip6_rt_pcpu_alloc()
1393 return rt6->sernum == rt_genid_ipv6(dev_net(rt6->dst.dev)); in rt6_is_valid()
1401 pcpu_rt = this_cpu_read(*res->nh->rt6i_pcpu); in rt6_get_pcpu_route()
1403 if (pcpu_rt && pcpu_rt->sernum && !rt6_is_valid(pcpu_rt)) { in rt6_get_pcpu_route()
1406 p = this_cpu_ptr(res->nh->rt6i_pcpu); in rt6_get_pcpu_route()
1410 dst_dev_put(&prev->dst); in rt6_get_pcpu_route()
1411 dst_release(&prev->dst); in rt6_get_pcpu_route()
1429 p = this_cpu_ptr(res->nh->rt6i_pcpu); in rt6_make_pcpu_route()
1433 if (res->f6i->fib6_destroying) { in rt6_make_pcpu_route()
1436 from = unrcu_pointer(xchg(&pcpu_rt->from, NULL)); in rt6_make_pcpu_route()
1458 net = dev_net(rt6_ex->rt6i->dst.dev); in rt6_remove_exception()
1459 net->ipv6.rt6_stats->fib_rt_cache--; in rt6_remove_exception()
1464 dst_dev_put(&rt6_ex->rt6i->dst); in rt6_remove_exception()
1466 hlist_del_rcu(&rt6_ex->hlist); in rt6_remove_exception()
1467 dst_release(&rt6_ex->rt6i->dst); in rt6_remove_exception()
1469 WARN_ON_ONCE(!bucket->depth); in rt6_remove_exception()
1470 bucket->depth--; in rt6_remove_exception()
1483 hlist_for_each_entry(rt6_ex, &bucket->chain, hlist) { in rt6_exception_remove_oldest()
1484 if (!oldest || time_before(rt6_ex->stamp, oldest->stamp)) in rt6_exception_remove_oldest()
1532 hlist_for_each_entry(rt6_ex, &(*bucket)->chain, hlist) { in __rt6_find_exception_spinlock()
1533 struct rt6_info *rt6 = rt6_ex->rt6i; in __rt6_find_exception_spinlock()
1534 bool matched = ipv6_addr_equal(daddr, &rt6->rt6i_dst.addr); in __rt6_find_exception_spinlock()
1538 matched = ipv6_addr_equal(saddr, &rt6->rt6i_src.addr); in __rt6_find_exception_spinlock()
1567 hlist_for_each_entry_rcu(rt6_ex, &(*bucket)->chain, hlist) { in __rt6_find_exception_rcu()
1568 struct rt6_info *rt6 = rt6_ex->rt6i; in __rt6_find_exception_rcu()
1569 bool matched = ipv6_addr_equal(daddr, &rt6->rt6i_dst.addr); in __rt6_find_exception_rcu()
1573 matched = ipv6_addr_equal(saddr, &rt6->rt6i_src.addr); in __rt6_find_exception_rcu()
1583 const struct fib6_nh *nh = res->nh; in fib6_mtu()
1586 if (res->f6i->fib6_pmtu) { in fib6_mtu()
1587 mtu = res->f6i->fib6_pmtu; in fib6_mtu()
1589 struct net_device *dev = nh->fib_nh_dev; in fib6_mtu()
1594 mtu = idev->cnf.mtu6; in fib6_mtu()
1600 return mtu - lwtunnel_headroom(nh->fib_nh_lws, mtu); in fib6_mtu()
1617 bucket = rcu_dereference_protected(nh->rt6i_exception_bucket, in fib6_nh_get_excptn_bucket()
1620 bucket = rcu_dereference(nh->rt6i_exception_bucket); in fib6_nh_get_excptn_bucket()
1647 bucket = rcu_dereference_protected(nh->rt6i_exception_bucket, in fib6_nh_excptn_bucket_set_flushed()
1653 rcu_assign_pointer(nh->rt6i_exception_bucket, bucket); in fib6_nh_excptn_bucket_set_flushed()
1659 struct net *net = dev_net(nrt->dst.dev); in rt6_insert_exception()
1661 struct fib6_info *f6i = res->f6i; in rt6_insert_exception()
1664 struct fib6_nh *nh = res->nh; in rt6_insert_exception()
1670 bucket = rcu_dereference_protected(nh->rt6i_exception_bucket, in rt6_insert_exception()
1676 err = -ENOMEM; in rt6_insert_exception()
1679 rcu_assign_pointer(nh->rt6i_exception_bucket, bucket); in rt6_insert_exception()
1681 err = -EINVAL; in rt6_insert_exception()
1692 if (f6i->fib6_src.plen) in rt6_insert_exception()
1693 src_key = &nrt->rt6i_src.addr; in rt6_insert_exception()
1699 if (dst_metric_raw(&nrt->dst, RTAX_MTU) >= fib6_mtu(res)) { in rt6_insert_exception()
1700 err = -EINVAL; in rt6_insert_exception()
1704 rt6_ex = __rt6_find_exception_spinlock(&bucket, &nrt->rt6i_dst.addr, in rt6_insert_exception()
1711 err = -ENOMEM; in rt6_insert_exception()
1714 rt6_ex->rt6i = nrt; in rt6_insert_exception()
1715 rt6_ex->stamp = jiffies; in rt6_insert_exception()
1716 hlist_add_head_rcu(&rt6_ex->hlist, &bucket->chain); in rt6_insert_exception()
1717 bucket->depth++; in rt6_insert_exception()
1718 net->ipv6.rt6_stats->fib_rt_cache++; in rt6_insert_exception()
1722 while (bucket->depth > max_depth) in rt6_insert_exception()
1728 /* Update fn->fn_sernum to invalidate all cached dst */ in rt6_insert_exception()
1730 spin_lock_bh(&f6i->fib6_table->tb6_lock); in rt6_insert_exception()
1732 spin_unlock_bh(&f6i->fib6_table->tb6_lock); in rt6_insert_exception()
1757 hlist_for_each_entry_safe(rt6_ex, tmp, &bucket->chain, hlist) { in fib6_nh_flush_exceptions()
1759 rcu_access_pointer(rt6_ex->rt6i->from) == from) in fib6_nh_flush_exceptions()
1762 WARN_ON_ONCE(!from && bucket->depth); in fib6_nh_flush_exceptions()
1780 if (f6i->nh) in rt6_flush_exceptions()
1781 nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_flush_exceptions, in rt6_flush_exceptions()
1784 fib6_nh_flush_exceptions(f6i->fib6_nh, f6i); in rt6_flush_exceptions()
1806 * So we need to use f6i->fib6_src to redo lookup in rt6_find_cached_rt()
1809 * rt->rt6i_src is updated.) in rt6_find_cached_rt()
1811 if (res->f6i->fib6_src.plen) in rt6_find_cached_rt()
1815 bucket = fib6_nh_get_excptn_bucket(res->nh, NULL); in rt6_find_cached_rt()
1818 if (rt6_ex && !rt6_check_expired(rt6_ex->rt6i)) in rt6_find_cached_rt()
1819 ret = rt6_ex->rt6i; in rt6_find_cached_rt()
1822 /* Use fib6_src as src_key and redo lookup */ in rt6_find_cached_rt()
1823 if (!ret && src_key && src_key != &res->f6i->fib6_src.addr) { in rt6_find_cached_rt()
1824 src_key = &res->f6i->fib6_src.addr; in rt6_find_cached_rt()
1841 if (!rcu_access_pointer(nh->rt6i_exception_bucket)) in fib6_nh_remove_exception()
1842 return -ENOENT; in fib6_nh_remove_exception()
1855 src_key = &rt->rt6i_src.addr; in fib6_nh_remove_exception()
1858 &rt->rt6i_dst.addr, in fib6_nh_remove_exception()
1864 err = -ENOENT; in fib6_nh_remove_exception()
1881 err = fib6_nh_remove_exception(nh, arg->plen, arg->rt); in rt6_nh_remove_exception_rt()
1892 from = rcu_dereference(rt->from); in rt6_remove_exception_rt()
1893 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_remove_exception_rt()
1894 return -EINVAL; in rt6_remove_exception_rt()
1896 if (from->nh) { in rt6_remove_exception_rt()
1899 .plen = from->fib6_src.plen in rt6_remove_exception_rt()
1904 rc = nexthop_for_each_fib6_nh(from->nh, in rt6_remove_exception_rt()
1907 return rc ? 0 : -ENOENT; in rt6_remove_exception_rt()
1910 return fib6_nh_remove_exception(from->fib6_nh, in rt6_remove_exception_rt()
1911 from->fib6_src.plen, rt); in rt6_remove_exception_rt()
1933 src_key = &rt->rt6i_src.addr; in fib6_nh_update_exception()
1935 rt6_ex = __rt6_find_exception_rcu(&bucket, &rt->rt6i_dst.addr, src_key); in fib6_nh_update_exception()
1937 rt6_ex->stamp = jiffies; in fib6_nh_update_exception()
1951 if (arg->dev != nh->fib_nh_dev || in fib6_nh_find_match()
1952 (arg->gw && !nh->fib_nh_gw_family) || in fib6_nh_find_match()
1953 (!arg->gw && nh->fib_nh_gw_family) || in fib6_nh_find_match()
1954 (arg->gw && !ipv6_addr_equal(arg->gw, &nh->fib_nh_gw6))) in fib6_nh_find_match()
1957 arg->match = nh; in fib6_nh_find_match()
1970 from = rcu_dereference(rt->from); in rt6_update_exception_stamp_rt()
1971 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_update_exception_stamp_rt()
1974 if (from->nh) { in rt6_update_exception_stamp_rt()
1976 .dev = rt->dst.dev, in rt6_update_exception_stamp_rt()
1977 .gw = &rt->rt6i_gateway, in rt6_update_exception_stamp_rt()
1980 nexthop_for_each_fib6_nh(from->nh, fib6_nh_find_match, &arg); in rt6_update_exception_stamp_rt()
1986 fib6_nh = from->fib6_nh; in rt6_update_exception_stamp_rt()
1988 fib6_nh_update_exception(fib6_nh, from->fib6_src.plen, rt); in rt6_update_exception_stamp_rt()
2006 if (dst_mtu(&rt->dst) >= mtu) in rt6_mtu_change_route_allowed()
2009 if (dst_mtu(&rt->dst) == idev->cnf.mtu6) in rt6_mtu_change_route_allowed()
2027 hlist_for_each_entry(rt6_ex, &bucket->chain, hlist) { in rt6_exceptions_update_pmtu()
2028 struct rt6_info *entry = rt6_ex->rt6i; in rt6_exceptions_update_pmtu()
2031 * route), the metrics of its rt->from have already in rt6_exceptions_update_pmtu()
2034 if (dst_metric_raw(&entry->dst, RTAX_MTU) && in rt6_exceptions_update_pmtu()
2036 dst_metric_set(&entry->dst, RTAX_MTU, mtu); in rt6_exceptions_update_pmtu()
2052 if (!rcu_access_pointer(nh->rt6i_exception_bucket)) in fib6_nh_exceptions_clean_tohost()
2060 &bucket->chain, hlist) { in fib6_nh_exceptions_clean_tohost()
2061 struct rt6_info *entry = rt6_ex->rt6i; in fib6_nh_exceptions_clean_tohost()
2063 if ((entry->rt6i_flags & RTF_CACHE_GATEWAY) == in fib6_nh_exceptions_clean_tohost()
2066 &entry->rt6i_gateway)) { in fib6_nh_exceptions_clean_tohost()
2082 struct rt6_info *rt = rt6_ex->rt6i; in rt6_age_examine_exception()
2084 /* we are pruning and obsoleting aged-out and non gateway exceptions in rt6_age_examine_exception()
2087 * EXPIRES exceptions - e.g. pmtu-generated ones are pruned when in rt6_age_examine_exception()
2090 if (!(rt->rt6i_flags & RTF_EXPIRES)) { in rt6_age_examine_exception()
2091 if (time_after_eq(now, rt->dst.lastuse + gc_args->timeout)) { in rt6_age_examine_exception()
2096 } else if (time_after(jiffies, rt->dst.expires)) { in rt6_age_examine_exception()
2102 if (rt->rt6i_flags & RTF_GATEWAY) { in rt6_age_examine_exception()
2105 neigh = __ipv6_neigh_lookup_noref(rt->dst.dev, &rt->rt6i_gateway); in rt6_age_examine_exception()
2107 if (!(neigh && (neigh->flags & NTF_ROUTER))) { in rt6_age_examine_exception()
2108 RT6_TRACE("purging route %p via non-router but gateway\n", in rt6_age_examine_exception()
2115 gc_args->more++; in rt6_age_examine_exception()
2127 if (!rcu_access_pointer(nh->rt6i_exception_bucket)) in fib6_nh_age_exceptions()
2136 &bucket->chain, hlist) { in fib6_nh_age_exceptions()
2156 fib6_nh_age_exceptions(nh, arg->gc_args, arg->now); in rt6_nh_age_exceptions()
2164 if (f6i->nh) { in rt6_age_exceptions()
2170 nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_age_exceptions, in rt6_age_exceptions()
2173 fib6_nh_age_exceptions(f6i->fib6_nh, gc_args, now); in rt6_age_exceptions()
2183 fn = fib6_node_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr); in fib6_table_lookup()
2188 if (res->f6i == net->ipv6.fib6_null_entry) { in fib6_table_lookup()
2189 fn = fib6_backtrack(fn, &fl6->saddr); in fib6_table_lookup()
2218 if (net->ipv6.devconf_all->forwarding == 0) in ip6_pol_route()
2224 if (res.f6i == net->ipv6.fib6_null_entry) in ip6_pol_route()
2230 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route()
2233 } else if (unlikely((fl6->flowi6_flags & FLOWI_FLAG_KNOWN_NH) && in ip6_pol_route()
2234 !res.nh->fib_nh_gw_family)) { in ip6_pol_route()
2237 * the daddr in the skb during the neighbor look-up is different in ip6_pol_route()
2238 * from the fl6->daddr used to look-up route here. in ip6_pol_route()
2240 rt = ip6_rt_cache_alloc(&res, &fl6->daddr, NULL); in ip6_pol_route()
2265 rt = net->ipv6.ip6_null_entry; in ip6_pol_route()
2280 return ip6_pol_route(net, table, fl6->flowi6_iif, fl6, skb, flags); in ip6_pol_route_input()
2289 if (rt6_need_strict(&fl6->daddr) && dev->type != ARPHRD_PIMREG) in ip6_route_input_lookup()
2308 if (likely(outer_iph->nexthdr != IPPROTO_ICMPV6)) in ip6_multipath_l3_keys()
2316 if (!icmpv6_is_err(icmph->icmp6_type)) in ip6_multipath_l3_keys()
2329 keys->addrs.v6addrs.src = _flkeys->addrs.v6addrs.src; in ip6_multipath_l3_keys()
2330 keys->addrs.v6addrs.dst = _flkeys->addrs.v6addrs.dst; in ip6_multipath_l3_keys()
2331 keys->tags.flow_label = _flkeys->tags.flow_label; in ip6_multipath_l3_keys()
2332 keys->basic.ip_proto = _flkeys->basic.ip_proto; in ip6_multipath_l3_keys()
2334 keys->addrs.v6addrs.src = key_iph->saddr; in ip6_multipath_l3_keys()
2335 keys->addrs.v6addrs.dst = key_iph->daddr; in ip6_multipath_l3_keys()
2336 keys->tags.flow_label = ip6_flowlabel(key_iph); in ip6_multipath_l3_keys()
2337 keys->basic.ip_proto = key_iph->nexthdr; in ip6_multipath_l3_keys()
2445 hash_keys.addrs.v6addrs.src = fl6->saddr; in rt6_multipath_custom_hash_fl6()
2447 hash_keys.addrs.v6addrs.dst = fl6->daddr; in rt6_multipath_custom_hash_fl6()
2449 hash_keys.basic.ip_proto = fl6->flowi6_proto; in rt6_multipath_custom_hash_fl6()
2453 hash_keys.ports.src = fl6->fl6_sport; in rt6_multipath_custom_hash_fl6()
2455 hash_keys.ports.dst = fl6->fl6_dport; in rt6_multipath_custom_hash_fl6()
2474 hash_keys.addrs.v6addrs.src = fl6->saddr; in rt6_multipath_hash()
2475 hash_keys.addrs.v6addrs.dst = fl6->daddr; in rt6_multipath_hash()
2477 hash_keys.basic.ip_proto = fl6->flowi6_proto; in rt6_multipath_hash()
2486 /* short-circuit if we already have L4 hash present */ in rt6_multipath_hash()
2487 if (skb->l4_hash) in rt6_multipath_hash()
2497 hash_keys.addrs.v6addrs.src = flkeys->addrs.v6addrs.src; in rt6_multipath_hash()
2498 hash_keys.addrs.v6addrs.dst = flkeys->addrs.v6addrs.dst; in rt6_multipath_hash()
2499 hash_keys.ports.src = flkeys->ports.src; in rt6_multipath_hash()
2500 hash_keys.ports.dst = flkeys->ports.dst; in rt6_multipath_hash()
2501 hash_keys.basic.ip_proto = flkeys->basic.ip_proto; in rt6_multipath_hash()
2505 hash_keys.addrs.v6addrs.src = fl6->saddr; in rt6_multipath_hash()
2506 hash_keys.addrs.v6addrs.dst = fl6->daddr; in rt6_multipath_hash()
2507 hash_keys.ports.src = fl6->fl6_sport; in rt6_multipath_hash()
2508 hash_keys.ports.dst = fl6->fl6_dport; in rt6_multipath_hash()
2509 hash_keys.basic.ip_proto = fl6->flowi6_proto; in rt6_multipath_hash()
2525 if (flkeys->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { in rt6_multipath_hash()
2527 hash_keys.addrs.v4addrs.src = flkeys->addrs.v4addrs.src; in rt6_multipath_hash()
2528 hash_keys.addrs.v4addrs.dst = flkeys->addrs.v4addrs.dst; in rt6_multipath_hash()
2529 } else if (flkeys->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 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.tags.flow_label = flkeys->tags.flow_label; in rt6_multipath_hash()
2534 hash_keys.basic.ip_proto = flkeys->basic.ip_proto; in rt6_multipath_hash()
2543 hash_keys.addrs.v6addrs.src = fl6->saddr; in rt6_multipath_hash()
2544 hash_keys.addrs.v6addrs.dst = fl6->daddr; in rt6_multipath_hash()
2546 hash_keys.basic.ip_proto = fl6->flowi6_proto; in rt6_multipath_hash()
2565 struct net *net = dev_net(skb->dev); in ip6_route_input()
2569 .flowi6_iif = skb->dev->ifindex, in ip6_route_input()
2570 .daddr = iph->daddr, in ip6_route_input()
2571 .saddr = iph->saddr, in ip6_route_input()
2573 .flowi6_mark = skb->mark, in ip6_route_input()
2574 .flowi6_proto = iph->nexthdr, in ip6_route_input()
2579 if (tun_info && !(tun_info->mode & IP_TUNNEL_INFO_TX)) in ip6_route_input()
2580 fl6.flowi6_tun_key.tun_id = tun_info->key.tun_id; in ip6_route_input()
2588 skb_dst_set_noref(skb, ip6_route_input_lookup(net, skb->dev, in ip6_route_input()
2598 return ip6_pol_route(net, table, fl6->flowi6_oif, fl6, skb, flags); in ip6_pol_route_output()
2608 if (ipv6_addr_type(&fl6->daddr) & in ip6_route_output_flags_noref()
2618 fl6->flowi6_iif = LOOPBACK_IFINDEX; in ip6_route_output_flags_noref()
2621 any_src = ipv6_addr_any(&fl6->saddr); in ip6_route_output_flags_noref()
2622 if ((sk && sk->sk_bound_dev_if) || rt6_need_strict(&fl6->daddr) || in ip6_route_output_flags_noref()
2623 (fl6->flowi6_oif && any_src)) in ip6_route_output_flags_noref()
2629 flags |= rt6_srcprefs2flags(inet6_sk(sk)->srcprefs); in ip6_route_output_flags_noref()
2646 if (list_empty(&rt6->dst.rt_uncached) && !dst_hold_safe(dst)) { in ip6_route_output_flags()
2647 dst = &net->ipv6.ip6_null_entry->dst; in ip6_route_output_flags()
2659 struct net_device *loopback_dev = net->loopback_dev; in ip6_blackhole_route()
2666 atomic_inc(&net->ipv6.rt6_stats->fib_rt_alloc); in ip6_blackhole_route()
2668 new = &rt->dst; in ip6_blackhole_route()
2669 new->__use = 1; in ip6_blackhole_route()
2670 new->input = dst_discard; in ip6_blackhole_route()
2671 new->output = dst_discard_out; in ip6_blackhole_route()
2673 dst_copy_metrics(new, &ort->dst); in ip6_blackhole_route()
2675 rt->rt6i_idev = in6_dev_get(loopback_dev); in ip6_blackhole_route()
2676 rt->rt6i_gateway = ort->rt6i_gateway; in ip6_blackhole_route()
2677 rt->rt6i_flags = ort->rt6i_flags & ~RTF_PCPU; in ip6_blackhole_route()
2679 memcpy(&rt->rt6i_dst, &ort->rt6i_dst, sizeof(struct rt6key)); in ip6_blackhole_route()
2681 memcpy(&rt->rt6i_src, &ort->rt6i_src, sizeof(struct rt6key)); in ip6_blackhole_route()
2686 return new ? new : ERR_PTR(-ENOMEM); in ip6_blackhole_route()
2719 return &rt->dst; in rt6_check()
2727 rt->dst.obsolete == DST_OBSOLETE_FORCE_CHK && in rt6_dst_from_check()
2729 return &rt->dst; in rt6_dst_from_check()
2743 if (rt->sernum) in ip6_dst_check()
2748 /* All IPV6 dsts are created with ->obsolete set to the value in ip6_dst_check()
2753 from = rcu_dereference(rt->from); in ip6_dst_check()
2755 if (from && (rt->rt6i_flags & RTF_PCPU || in ip6_dst_check()
2756 unlikely(!list_empty(&rt->dst.rt_uncached)))) in ip6_dst_check()
2772 if (rt->rt6i_flags & RTF_CACHE) { in ip6_negative_advice()
2796 if (rt->rt6i_flags & RTF_CACHE) { in ip6_link_failure()
2802 from = rcu_dereference(rt->from); in ip6_link_failure()
2804 fn = rcu_dereference(from->fib6_node); in ip6_link_failure()
2805 if (fn && (rt->rt6i_flags & RTF_DEFAULT)) in ip6_link_failure()
2806 WRITE_ONCE(fn->fn_sernum, -1); in ip6_link_failure()
2815 if (!(rt0->rt6i_flags & RTF_EXPIRES)) { in rt6_update_expires()
2819 from = rcu_dereference(rt0->from); in rt6_update_expires()
2821 rt0->dst.expires = from->expires; in rt6_update_expires()
2825 dst_set_expires(&rt0->dst, timeout); in rt6_update_expires()
2826 rt0->rt6i_flags |= RTF_EXPIRES; in rt6_update_expires()
2831 struct net *net = dev_net(rt->dst.dev); in rt6_do_update_pmtu()
2833 dst_metric_set(&rt->dst, RTAX_MTU, mtu); in rt6_do_update_pmtu()
2834 rt->rt6i_flags |= RTF_MODIFIED; in rt6_do_update_pmtu()
2835 rt6_update_expires(rt, net->ipv6.sysctl.ip6_rt_mtu_expires); in rt6_do_update_pmtu()
2840 return !(rt->rt6i_flags & RTF_CACHE) && in rt6_cache_allowed_for_pmtu()
2841 (rt->rt6i_flags & RTF_PCPU || rcu_access_pointer(rt->from)); in rt6_cache_allowed_for_pmtu()
2857 daddr = &iph->daddr; in __ip6_rt_update_pmtu()
2858 saddr = &iph->saddr; in __ip6_rt_update_pmtu()
2860 daddr = &sk->sk_v6_daddr; in __ip6_rt_update_pmtu()
2861 saddr = &inet6_sk(sk)->saddr; in __ip6_rt_update_pmtu()
2877 /* update rt6_ex->stamp for cache */ in __ip6_rt_update_pmtu()
2878 if (rt6->rt6i_flags & RTF_CACHE) in __ip6_rt_update_pmtu()
2885 res.f6i = rcu_dereference(rt6->from); in __ip6_rt_update_pmtu()
2889 res.fib6_flags = res.f6i->fib6_flags; in __ip6_rt_update_pmtu()
2890 res.fib6_type = res.f6i->fib6_type; in __ip6_rt_update_pmtu()
2892 if (res.f6i->nh) { in __ip6_rt_update_pmtu()
2894 .dev = dst->dev, in __ip6_rt_update_pmtu()
2895 .gw = &rt6->rt6i_gateway, in __ip6_rt_update_pmtu()
2898 nexthop_for_each_fib6_nh(res.f6i->nh, in __ip6_rt_update_pmtu()
2902 * using the dst->dev + gw. Should be impossible. in __ip6_rt_update_pmtu()
2909 res.nh = res.f6i->fib6_nh; in __ip6_rt_update_pmtu()
2916 dst_release_immediate(&nrt6->dst); in __ip6_rt_update_pmtu()
2934 const struct ipv6hdr *iph = (struct ipv6hdr *) skb->data; in ip6_update_pmtu()
2938 .flowi6_mark = mark ? mark : IP6_REPLY_MARK(net, skb->mark), in ip6_update_pmtu()
2939 .daddr = iph->daddr, in ip6_update_pmtu()
2940 .saddr = iph->saddr, in ip6_update_pmtu()
2946 if (!dst->error) in ip6_update_pmtu()
2954 int oif = sk->sk_bound_dev_if; in ip6_sk_update_pmtu()
2957 if (!oif && skb->dev) in ip6_sk_update_pmtu()
2958 oif = l3mdev_master_ifindex(skb->dev); in ip6_sk_update_pmtu()
2960 ip6_update_pmtu(skb, sock_net(sk), mtu, oif, READ_ONCE(sk->sk_mark), in ip6_sk_update_pmtu()
2961 sk->sk_uid); in ip6_sk_update_pmtu()
2964 if (!dst || !dst->obsolete || in ip6_sk_update_pmtu()
2965 dst->ops->check(dst, inet6_sk(sk)->dst_cookie)) in ip6_sk_update_pmtu()
2969 if (!sock_owned_by_user(sk) && !ipv6_addr_v4mapped(&sk->sk_v6_daddr)) in ip6_sk_update_pmtu()
2983 ipv6_addr_equal(&fl6->daddr, &sk->sk_v6_daddr) ? in ip6_sk_dst_store_flow()
2984 &sk->sk_v6_daddr : NULL, in ip6_sk_dst_store_flow()
2986 ipv6_addr_equal(&fl6->saddr, &np->saddr) ? in ip6_sk_dst_store_flow()
2987 &np->saddr : in ip6_sk_dst_store_flow()
2997 const struct fib6_nh *nh = res->nh; in ip6_redirect_nh_match()
2999 if (nh->fib_nh_flags & RTNH_F_DEAD || !nh->fib_nh_gw_family || in ip6_redirect_nh_match()
3000 fl6->flowi6_oif != nh->fib_nh_dev->ifindex) in ip6_redirect_nh_match()
3008 if (!ipv6_addr_equal(gw, &nh->fib_nh_gw6)) { in ip6_redirect_nh_match()
3011 rt_cache = rt6_find_cached_rt(res, &fl6->daddr, &fl6->saddr); in ip6_redirect_nh_match()
3013 ipv6_addr_equal(gw, &rt_cache->rt6i_gateway)) { in ip6_redirect_nh_match()
3033 arg->res->nh = nh; in fib6_nh_redirect_match()
3034 return ip6_redirect_nh_match(arg->res, arg->fl6, arg->gw, arg->ret); in fib6_nh_redirect_match()
3055 .gw = &rdfl->gateway, in __ip6_route_redirect()
3072 fn = fib6_node_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr); in __ip6_route_redirect()
3078 if (rt->fib6_flags & RTF_REJECT) in __ip6_route_redirect()
3080 if (unlikely(rt->nh)) { in __ip6_route_redirect()
3081 if (nexthop_is_blackhole(rt->nh)) in __ip6_route_redirect()
3083 /* on match, res->nh is filled in and potentially ret */ in __ip6_route_redirect()
3084 if (nexthop_for_each_fib6_nh(rt->nh, in __ip6_route_redirect()
3089 res.nh = rt->fib6_nh; in __ip6_route_redirect()
3090 if (ip6_redirect_nh_match(&res, fl6, &rdfl->gateway, in __ip6_route_redirect()
3097 rt = net->ipv6.fib6_null_entry; in __ip6_route_redirect()
3098 else if (rt->fib6_flags & RTF_REJECT) { in __ip6_route_redirect()
3099 ret = net->ipv6.ip6_null_entry; in __ip6_route_redirect()
3103 if (rt == net->ipv6.fib6_null_entry) { in __ip6_route_redirect()
3104 fn = fib6_backtrack(fn, &fl6->saddr); in __ip6_route_redirect()
3110 res.nh = rt->fib6_nh; in __ip6_route_redirect()
3115 res.fib6_flags = res.f6i->fib6_flags; in __ip6_route_redirect()
3116 res.fib6_type = res.f6i->fib6_type; in __ip6_route_redirect()
3144 const struct ipv6hdr *iph = (struct ipv6hdr *) skb->data; in ip6_redirect()
3150 .daddr = iph->daddr, in ip6_redirect()
3151 .saddr = iph->saddr, in ip6_redirect()
3156 dst = ip6_route_redirect(net, &fl6, skb, &ipv6_hdr(skb)->saddr); in ip6_redirect()
3170 .daddr = msg->dest, in ip6_redirect_no_header()
3171 .saddr = iph->daddr, in ip6_redirect_no_header()
3175 dst = ip6_route_redirect(net, &fl6, skb, &iph->saddr); in ip6_redirect_no_header()
3182 ip6_redirect(skb, sock_net(sk), sk->sk_bound_dev_if, in ip6_sk_redirect()
3183 READ_ONCE(sk->sk_mark), sk->sk_uid); in ip6_sk_redirect()
3189 struct net_device *dev = dst->dev; in ip6_default_advmss()
3193 mtu -= sizeof(struct ipv6hdr) + sizeof(struct tcphdr); in ip6_default_advmss()
3198 if (mtu < net->ipv6.sysctl.ip6_rt_min_advmss) in ip6_default_advmss()
3199 mtu = net->ipv6.sysctl.ip6_rt_min_advmss; in ip6_default_advmss()
3204 * Maximal non-jumbo IPv6 payload is IPV6_MAXPLEN and in ip6_default_advmss()
3205 * corresponding MSS is IPV6_MAXPLEN - tcp_header_size. in ip6_default_advmss()
3209 if (mtu > IPV6_MAXPLEN - sizeof(struct tcphdr)) in ip6_default_advmss()
3221 * 1. mtu on route is locked - use it
3232 const struct fib6_nh *nh = res->nh; in ip6_mtu_from_fib6()
3233 struct fib6_info *f6i = res->f6i; in ip6_mtu_from_fib6()
3239 mtu = f6i->fib6_pmtu; in ip6_mtu_from_fib6()
3246 mtu = dst_metric_raw(&rt->dst, RTAX_MTU); in ip6_mtu_from_fib6()
3248 struct net_device *dev = nh->fib_nh_dev; in ip6_mtu_from_fib6()
3252 if (idev && idev->cnf.mtu6 > mtu) in ip6_mtu_from_fib6()
3253 mtu = idev->cnf.mtu6; in ip6_mtu_from_fib6()
3258 return mtu - lwtunnel_headroom(nh->fib_nh_lws, mtu); in ip6_mtu_from_fib6()
3270 return ERR_PTR(-ENODEV); in icmp6_dst_alloc()
3275 dst = ERR_PTR(-ENOMEM); in icmp6_dst_alloc()
3279 rt->dst.input = ip6_input; in icmp6_dst_alloc()
3280 rt->dst.output = ip6_output; in icmp6_dst_alloc()
3281 rt->rt6i_gateway = fl6->daddr; in icmp6_dst_alloc()
3282 rt->rt6i_dst.addr = fl6->daddr; in icmp6_dst_alloc()
3283 rt->rt6i_dst.plen = 128; in icmp6_dst_alloc()
3284 rt->rt6i_idev = idev; in icmp6_dst_alloc()
3285 dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 0); in icmp6_dst_alloc()
3292 dst = xfrm_lookup(net, &rt->dst, flowi6_to_flowi(fl6), NULL, 0); in icmp6_dst_alloc()
3301 int rt_min_interval = net->ipv6.sysctl.ip6_rt_gc_min_interval; in ip6_dst_gc()
3302 int rt_elasticity = net->ipv6.sysctl.ip6_rt_gc_elasticity; in ip6_dst_gc()
3303 int rt_gc_timeout = net->ipv6.sysctl.ip6_rt_gc_timeout; in ip6_dst_gc()
3304 unsigned long rt_last_gc = net->ipv6.ip6_rt_last_gc; in ip6_dst_gc()
3311 fib6_run_gc(atomic_inc_return(&net->ipv6.ip6_rt_gc_expire), net, true); in ip6_dst_gc()
3313 if (entries < ops->gc_thresh) in ip6_dst_gc()
3314 atomic_set(&net->ipv6.ip6_rt_gc_expire, rt_gc_timeout >> 1); in ip6_dst_gc()
3316 val = atomic_read(&net->ipv6.ip6_rt_gc_expire); in ip6_dst_gc()
3317 atomic_set(&net->ipv6.ip6_rt_gc_expire, val - (val >> rt_elasticity)); in ip6_dst_gc()
3325 .flowi6_oif = cfg->fc_ifindex, in ip6_nh_lookup_table()
3327 .saddr = cfg->fc_prefsrc, in ip6_nh_lookup_table()
3334 return -EINVAL; in ip6_nh_lookup_table()
3336 if (!ipv6_addr_any(&cfg->fc_prefsrc)) in ip6_nh_lookup_table()
3341 err = fib6_table_lookup(net, table, cfg->fc_ifindex, &fl6, res, flags); in ip6_nh_lookup_table()
3342 if (!err && res->f6i != net->ipv6.fib6_null_entry) in ip6_nh_lookup_table()
3343 fib6_select_path(net, res, &fl6, cfg->fc_ifindex, in ip6_nh_lookup_table()
3344 cfg->fc_ifindex != 0, NULL, flags); in ip6_nh_lookup_table()
3355 const struct in6_addr *gw_addr = &cfg->fc_gateway; in ip6_route_check_nh_onlink()
3362 !ipv6_addr_any(&res.f6i->fib6_dst.addr) && in ip6_route_check_nh_onlink()
3363 (res.fib6_type != RTN_UNICAST || dev != res.nh->fib_nh_dev)) { in ip6_route_check_nh_onlink()
3366 err = -EINVAL; in ip6_route_check_nh_onlink()
3378 const struct in6_addr *gw_addr = &cfg->fc_gateway; in ip6_route_check_nh()
3382 int err = -EHOSTUNREACH; in ip6_route_check_nh()
3384 if (cfg->fc_table) { in ip6_route_check_nh()
3386 cfg->fc_table, flags, &res); in ip6_route_check_nh()
3391 res.nh->fib_nh_gw_family || in ip6_route_check_nh()
3392 (dev && dev != res.nh->fib_nh_dev)) in ip6_route_check_nh()
3393 err = -EHOSTUNREACH; in ip6_route_check_nh()
3398 .flowi6_oif = cfg->fc_ifindex, in ip6_route_check_nh()
3402 err = fib6_lookup(net, cfg->fc_ifindex, &fl6, &res, flags); in ip6_route_check_nh()
3404 res.nh->fib_nh_gw_family) in ip6_route_check_nh()
3405 err = -EHOSTUNREACH; in ip6_route_check_nh()
3410 fib6_select_path(net, &res, &fl6, cfg->fc_ifindex, in ip6_route_check_nh()
3411 cfg->fc_ifindex != 0, NULL, flags); in ip6_route_check_nh()
3416 if (dev != res.nh->fib_nh_dev) in ip6_route_check_nh()
3417 err = -EHOSTUNREACH; in ip6_route_check_nh()
3419 *_dev = dev = res.nh->fib_nh_dev; in ip6_route_check_nh()
3433 const struct in6_addr *gw_addr = &cfg->fc_gateway; in ip6_validate_gw()
3438 int err = -EINVAL; in ip6_validate_gw()
3442 * will return already-added prefix route via interface that in ip6_validate_gw()
3443 * prefix route was assigned to, which might be non-loopback. in ip6_validate_gw()
3452 /* IPv6 strictly inhibits using not link-local in ip6_validate_gw()
3457 * some exceptions. --ANK in ip6_validate_gw()
3458 * We allow IPv4-mapped nexthops to support RFC4798-type in ip6_validate_gw()
3468 if (cfg->fc_flags & RTNH_F_ONLINK) in ip6_validate_gw()
3483 err = -EINVAL; in ip6_validate_gw()
3487 } else if (dev->flags & IFF_LOOPBACK) { in ip6_validate_gw()
3510 (dev && (dev->flags & IFF_LOOPBACK) && in fib6_is_reject()
3522 netdevice_tracker *dev_tracker = &fib6_nh->fib_nh_dev_tracker; in fib6_nh_init()
3528 fib6_nh->fib_nh_family = AF_INET6; in fib6_nh_init()
3530 fib6_nh->last_probe = jiffies; in fib6_nh_init()
3532 if (cfg->fc_is_fdb) { in fib6_nh_init()
3533 fib6_nh->fib_nh_gw6 = cfg->fc_gateway; in fib6_nh_init()
3534 fib6_nh->fib_nh_gw_family = AF_INET6; in fib6_nh_init()
3538 err = -ENODEV; in fib6_nh_init()
3539 if (cfg->fc_ifindex) { in fib6_nh_init()
3540 dev = netdev_get_by_index(net, cfg->fc_ifindex, in fib6_nh_init()
3549 if (cfg->fc_flags & RTNH_F_ONLINK) { in fib6_nh_init()
3556 if (!(dev->flags & IFF_UP)) { in fib6_nh_init()
3558 err = -ENETDOWN; in fib6_nh_init()
3562 fib6_nh->fib_nh_flags |= RTNH_F_ONLINK; in fib6_nh_init()
3565 fib6_nh->fib_nh_weight = 1; in fib6_nh_init()
3570 addr_type = ipv6_addr_type(&cfg->fc_dst); in fib6_nh_init()
3571 if (fib6_is_reject(cfg->fc_flags, dev, addr_type)) { in fib6_nh_init()
3573 if (dev != net->loopback_dev) { in fib6_nh_init()
3578 dev = net->loopback_dev; in fib6_nh_init()
3582 err = -ENODEV; in fib6_nh_init()
3589 if (cfg->fc_flags & RTF_GATEWAY) { in fib6_nh_init()
3595 fib6_nh->fib_nh_gw6 = cfg->fc_gateway; in fib6_nh_init()
3596 fib6_nh->fib_nh_gw_family = AF_INET6; in fib6_nh_init()
3599 err = -ENODEV; in fib6_nh_init()
3603 if (!idev || idev->cnf.disable_ipv6) { in fib6_nh_init()
3605 err = -EACCES; in fib6_nh_init()
3609 if (!(dev->flags & IFF_UP) && !cfg->fc_ignore_dev_down) { in fib6_nh_init()
3611 err = -ENETDOWN; in fib6_nh_init()
3615 if (!(cfg->fc_flags & (RTF_LOCAL | RTF_ANYCAST)) && in fib6_nh_init()
3617 fib6_nh->fib_nh_flags |= RTNH_F_LINKDOWN; in fib6_nh_init()
3619 err = fib_nh_common_init(net, &fib6_nh->nh_common, cfg->fc_encap, in fib6_nh_init()
3620 cfg->fc_encap_type, cfg, gfp_flags, extack); in fib6_nh_init()
3625 fib6_nh->rt6i_pcpu = alloc_percpu_gfp(struct rt6_info *, gfp_flags); in fib6_nh_init()
3626 if (!fib6_nh->rt6i_pcpu) { in fib6_nh_init()
3627 err = -ENOMEM; in fib6_nh_init()
3631 fib6_nh->fib_nh_dev = dev; in fib6_nh_init()
3632 fib6_nh->fib_nh_oif = dev->ifindex; in fib6_nh_init()
3639 fib_nh_common_release(&fib6_nh->nh_common); in fib6_nh_init()
3640 fib6_nh->nh_common.nhc_pcpu_rth_output = NULL; in fib6_nh_init()
3641 fib6_nh->fib_nh_lws = NULL; in fib6_nh_init()
3657 rcu_assign_pointer(fib6_nh->rt6i_exception_bucket, NULL); in fib6_nh_release()
3664 free_percpu(fib6_nh->rt6i_pcpu); in fib6_nh_release()
3666 fib_nh_common_release(&fib6_nh->nh_common); in fib6_nh_release()
3673 if (!fib6_nh->rt6i_pcpu) in fib6_nh_release_dsts()
3679 ppcpu_rt = per_cpu_ptr(fib6_nh->rt6i_pcpu, cpu); in fib6_nh_release_dsts()
3682 dst_dev_put(&pcpu_rt->dst); in fib6_nh_release_dsts()
3683 dst_release(&pcpu_rt->dst); in fib6_nh_release_dsts()
3692 struct net *net = cfg->fc_nlinfo.nl_net; in ip6_route_info_create()
3697 int err = -EINVAL; in ip6_route_info_create()
3701 if (cfg->fc_flags & RTF_PCPU) { in ip6_route_info_create()
3707 if (cfg->fc_flags & RTF_CACHE) { in ip6_route_info_create()
3712 if (cfg->fc_type > RTN_MAX) { in ip6_route_info_create()
3717 if (cfg->fc_dst_len > 128) { in ip6_route_info_create()
3721 if (cfg->fc_src_len > 128) { in ip6_route_info_create()
3726 if (cfg->fc_src_len) { in ip6_route_info_create()
3732 if (cfg->fc_nh_id) { in ip6_route_info_create()
3733 nh = nexthop_find_by_id(net, cfg->fc_nh_id); in ip6_route_info_create()
3743 err = -ENOBUFS; in ip6_route_info_create()
3744 if (cfg->fc_nlinfo.nlh && in ip6_route_info_create()
3745 !(cfg->fc_nlinfo.nlh->nlmsg_flags & NLM_F_CREATE)) { in ip6_route_info_create()
3746 table = fib6_get_table(net, cfg->fc_table); in ip6_route_info_create()
3749 table = fib6_new_table(net, cfg->fc_table); in ip6_route_info_create()
3752 table = fib6_new_table(net, cfg->fc_table); in ip6_route_info_create()
3758 err = -ENOMEM; in ip6_route_info_create()
3763 rt->fib6_metrics = ip_fib_metrics_init(cfg->fc_mx, cfg->fc_mx_len, in ip6_route_info_create()
3765 if (IS_ERR(rt->fib6_metrics)) { in ip6_route_info_create()
3766 err = PTR_ERR(rt->fib6_metrics); in ip6_route_info_create()
3768 rt->fib6_metrics = (struct dst_metrics *)&dst_default_metrics; in ip6_route_info_create()
3772 if (cfg->fc_flags & RTF_ADDRCONF) in ip6_route_info_create()
3773 rt->dst_nocount = true; in ip6_route_info_create()
3775 if (cfg->fc_flags & RTF_EXPIRES) in ip6_route_info_create()
3777 clock_t_to_jiffies(cfg->fc_expires)); in ip6_route_info_create()
3781 if (cfg->fc_protocol == RTPROT_UNSPEC) in ip6_route_info_create()
3782 cfg->fc_protocol = RTPROT_BOOT; in ip6_route_info_create()
3783 rt->fib6_protocol = cfg->fc_protocol; in ip6_route_info_create()
3785 rt->fib6_table = table; in ip6_route_info_create()
3786 rt->fib6_metric = cfg->fc_metric; in ip6_route_info_create()
3787 rt->fib6_type = cfg->fc_type ? : RTN_UNICAST; in ip6_route_info_create()
3788 rt->fib6_flags = cfg->fc_flags & ~RTF_GATEWAY; in ip6_route_info_create()
3790 ipv6_addr_prefix(&rt->fib6_dst.addr, &cfg->fc_dst, cfg->fc_dst_len); in ip6_route_info_create()
3791 rt->fib6_dst.plen = cfg->fc_dst_len; in ip6_route_info_create()
3794 ipv6_addr_prefix(&rt->fib6_src.addr, &cfg->fc_src, cfg->fc_src_len); in ip6_route_info_create()
3795 rt->fib6_src.plen = cfg->fc_src_len; in ip6_route_info_create()
3798 if (rt->fib6_src.plen) { in ip6_route_info_create()
3800 err = -EINVAL; in ip6_route_info_create()
3805 err = -ENOENT; in ip6_route_info_create()
3808 rt->nh = nh; in ip6_route_info_create()
3809 fib6_nh = nexthop_fib6_nh(rt->nh); in ip6_route_info_create()
3811 err = fib6_nh_init(net, rt->fib6_nh, cfg, gfp_flags, extack); in ip6_route_info_create()
3815 fib6_nh = rt->fib6_nh; in ip6_route_info_create()
3820 addr_type = ipv6_addr_type(&cfg->fc_dst); in ip6_route_info_create()
3821 if (fib6_is_reject(cfg->fc_flags, rt->fib6_nh->fib_nh_dev, in ip6_route_info_create()
3823 rt->fib6_flags = RTF_REJECT | RTF_NONEXTHOP; in ip6_route_info_create()
3826 if (!ipv6_addr_any(&cfg->fc_prefsrc)) { in ip6_route_info_create()
3827 struct net_device *dev = fib6_nh->fib_nh_dev; in ip6_route_info_create()
3829 if (!ipv6_chk_addr(net, &cfg->fc_prefsrc, dev, 0)) { in ip6_route_info_create()
3831 err = -EINVAL; in ip6_route_info_create()
3834 rt->fib6_prefsrc.addr = cfg->fc_prefsrc; in ip6_route_info_create()
3835 rt->fib6_prefsrc.plen = 128; in ip6_route_info_create()
3837 rt->fib6_prefsrc.plen = 0; in ip6_route_info_create()
3844 ip_fib_metrics_put(rt->fib6_metrics); in ip6_route_info_create()
3859 err = __ip6_ins_rt(rt, &cfg->fc_nlinfo, extack); in ip6_route_add()
3867 struct net *net = info->nl_net; in __ip6_del_rt()
3871 if (rt == net->ipv6.fib6_null_entry) { in __ip6_del_rt()
3872 err = -ENOENT; in __ip6_del_rt()
3876 table = rt->fib6_table; in __ip6_del_rt()
3877 spin_lock_bh(&table->tb6_lock); in __ip6_del_rt()
3879 spin_unlock_bh(&table->tb6_lock); in __ip6_del_rt()
3898 struct nl_info *info = &cfg->fc_nlinfo; in __ip6_del_rt_siblings()
3899 struct net *net = info->nl_net; in __ip6_del_rt_siblings()
3902 int err = -ENOENT; in __ip6_del_rt_siblings()
3904 if (rt == net->ipv6.fib6_null_entry) in __ip6_del_rt_siblings()
3906 table = rt->fib6_table; in __ip6_del_rt_siblings()
3907 spin_lock_bh(&table->tb6_lock); in __ip6_del_rt_siblings()
3909 if (rt->fib6_nsiblings && cfg->fc_delete_all_nh) { in __ip6_del_rt_siblings()
3916 u32 seq = info->nlh ? info->nlh->nlmsg_seq : 0; in __ip6_del_rt_siblings()
3920 info->portid, seq, 0) < 0) { in __ip6_del_rt_siblings()
3924 info->skip_notify = 1; in __ip6_del_rt_siblings()
3932 info->skip_notify_kernel = 1; in __ip6_del_rt_siblings()
3933 fn = rcu_dereference_protected(rt->fib6_node, in __ip6_del_rt_siblings()
3934 lockdep_is_held(&table->tb6_lock)); in __ip6_del_rt_siblings()
3935 if (rcu_access_pointer(fn->leaf) == rt) { in __ip6_del_rt_siblings()
3938 last_sibling = list_last_entry(&rt->fib6_siblings, in __ip6_del_rt_siblings()
3942 last_sibling->fib6_next, in __ip6_del_rt_siblings()
3943 lockdep_is_held(&table->tb6_lock)); in __ip6_del_rt_siblings()
3950 rt, rt->fib6_nsiblings, in __ip6_del_rt_siblings()
3954 &rt->fib6_siblings, in __ip6_del_rt_siblings()
3964 spin_unlock_bh(&table->tb6_lock); in __ip6_del_rt_siblings()
3969 rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, in __ip6_del_rt_siblings()
3970 info->nlh, gfp_any()); in __ip6_del_rt_siblings()
3977 int rc = -ESRCH; in __ip6_del_cached_rt()
3979 if (cfg->fc_ifindex && rt->dst.dev->ifindex != cfg->fc_ifindex) in __ip6_del_cached_rt()
3982 if (cfg->fc_flags & RTF_GATEWAY && in __ip6_del_cached_rt()
3983 !ipv6_addr_equal(&cfg->fc_gateway, &rt->rt6i_gateway)) in __ip6_del_cached_rt()
4000 rt_cache = rt6_find_cached_rt(&res, &cfg->fc_dst, &cfg->fc_src); in ip6_del_cached_rt()
4017 rc = ip6_del_cached_rt(arg->cfg, arg->f6i, nh); in fib6_nh_del_cached_rt()
4018 return rc != -ESRCH ? rc : 0; in fib6_nh_del_cached_rt()
4028 return nexthop_for_each_fib6_nh(f6i->nh, fib6_nh_del_cached_rt, &arg); in ip6_del_cached_rt_nh()
4037 int err = -ESRCH; in ip6_route_del()
4039 table = fib6_get_table(cfg->fc_nlinfo.nl_net, cfg->fc_table); in ip6_route_del()
4047 fn = fib6_locate(&table->tb6_root, in ip6_route_del()
4048 &cfg->fc_dst, cfg->fc_dst_len, in ip6_route_del()
4049 &cfg->fc_src, cfg->fc_src_len, in ip6_route_del()
4050 !(cfg->fc_flags & RTF_CACHE)); in ip6_route_del()
4056 if (rt->nh && cfg->fc_nh_id && in ip6_route_del()
4057 rt->nh->id != cfg->fc_nh_id) in ip6_route_del()
4060 if (cfg->fc_flags & RTF_CACHE) { in ip6_route_del()
4063 if (rt->nh) { in ip6_route_del()
4065 } else if (cfg->fc_nh_id) { in ip6_route_del()
4068 nh = rt->fib6_nh; in ip6_route_del()
4071 if (rc != -ESRCH) { in ip6_route_del()
4078 if (cfg->fc_metric && cfg->fc_metric != rt->fib6_metric) in ip6_route_del()
4080 if (cfg->fc_protocol && in ip6_route_del()
4081 cfg->fc_protocol != rt->fib6_protocol) in ip6_route_del()
4084 if (rt->nh) { in ip6_route_del()
4089 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
4091 if (cfg->fc_nh_id) in ip6_route_del()
4094 nh = rt->fib6_nh; in ip6_route_del()
4095 if (cfg->fc_ifindex && in ip6_route_del()
4096 (!nh->fib_nh_dev || in ip6_route_del()
4097 nh->fib_nh_dev->ifindex != cfg->fc_ifindex)) in ip6_route_del()
4099 if (cfg->fc_flags & RTF_GATEWAY && in ip6_route_del()
4100 !ipv6_addr_equal(&cfg->fc_gateway, &nh->fib_nh_gw6)) in ip6_route_del()
4107 if (cfg->fc_flags & RTF_GATEWAY) in ip6_route_del()
4108 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
4130 optlen = skb_tail_pointer(skb) - skb_transport_header(skb); in rt6_do_redirect()
4131 optlen -= sizeof(*msg); in rt6_do_redirect()
4140 if (ipv6_addr_is_multicast(&msg->dest)) { in rt6_do_redirect()
4146 if (ipv6_addr_equal(&msg->dest, &msg->target)) { in rt6_do_redirect()
4148 } else if (ipv6_addr_type(&msg->target) != in rt6_do_redirect()
4150 net_dbg_ratelimited("rt6_do_redirect: target address is not link-local unicast\n"); in rt6_do_redirect()
4154 in6_dev = __in6_dev_get(skb->dev); in rt6_do_redirect()
4157 if (in6_dev->cnf.forwarding || !in6_dev->cnf.accept_redirects) in rt6_do_redirect()
4162 * first-hop router for the specified ICMP Destination Address. in rt6_do_redirect()
4165 if (!ndisc_parse_options(skb->dev, msg->opt, optlen, &ndopts)) { in rt6_do_redirect()
4173 skb->dev); in rt6_do_redirect()
4175 net_dbg_ratelimited("rt6_redirect: invalid link-layer address length\n"); in rt6_do_redirect()
4181 if (rt->rt6i_flags & RTF_REJECT) { in rt6_do_redirect()
4186 /* Redirect received -> path was valid. in rt6_do_redirect()
4188 * so that this nexthop apparently is reachable. --ANK in rt6_do_redirect()
4190 dst_confirm_neigh(&rt->dst, &ipv6_hdr(skb)->saddr); in rt6_do_redirect()
4192 neigh = __neigh_lookup(&nd_tbl, &msg->target, skb->dev, 1); in rt6_do_redirect()
4200 ndisc_update(skb->dev, neigh, lladdr, NUD_STALE, in rt6_do_redirect()
4208 res.f6i = rcu_dereference(rt->from); in rt6_do_redirect()
4212 if (res.f6i->nh) { in rt6_do_redirect()
4214 .dev = dst->dev, in rt6_do_redirect()
4215 .gw = &rt->rt6i_gateway, in rt6_do_redirect()
4218 nexthop_for_each_fib6_nh(res.f6i->nh, in rt6_do_redirect()
4222 * using the dst->dev. Should be impossible in rt6_do_redirect()
4228 res.nh = res.f6i->fib6_nh; in rt6_do_redirect()
4231 res.fib6_flags = res.f6i->fib6_flags; in rt6_do_redirect()
4232 res.fib6_type = res.f6i->fib6_type; in rt6_do_redirect()
4233 nrt = ip6_rt_cache_alloc(&res, &msg->dest, NULL); in rt6_do_redirect()
4237 nrt->rt6i_flags = RTF_GATEWAY|RTF_UP|RTF_DYNAMIC|RTF_CACHE; in rt6_do_redirect()
4239 nrt->rt6i_flags &= ~RTF_GATEWAY; in rt6_do_redirect()
4241 nrt->rt6i_gateway = *(struct in6_addr *)neigh->primary_key; in rt6_do_redirect()
4245 dst_release_immediate(&nrt->dst); in rt6_do_redirect()
4249 netevent.old = &rt->dst; in rt6_do_redirect()
4250 netevent.new = &nrt->dst; in rt6_do_redirect()
4251 netevent.daddr = &msg->dest; in rt6_do_redirect()
4267 int ifindex = dev->ifindex; in rt6_get_route_info()
4277 fn = fib6_locate(&table->tb6_root, prefix, prefixlen, NULL, 0, true); in rt6_get_route_info()
4282 /* these routes do not use nexthops */ in rt6_get_route_info()
4283 if (rt->nh) in rt6_get_route_info()
4285 if (rt->fib6_nh->fib_nh_dev->ifindex != ifindex) in rt6_get_route_info()
4287 if (!(rt->fib6_flags & RTF_ROUTEINFO) || in rt6_get_route_info()
4288 !rt->fib6_nh->fib_nh_gw_family) in rt6_get_route_info()
4290 if (!ipv6_addr_equal(&rt->fib6_nh->fib_nh_gw6, gwaddr)) in rt6_get_route_info()
4309 .fc_ifindex = dev->ifindex, in rt6_add_route_info()
4347 for_each_fib6_node_rt_rcu(&table->tb6_root) { in rt6_get_dflt_router()
4350 /* RA routes do not use nexthops */ in rt6_get_dflt_router()
4351 if (rt->nh) in rt6_get_dflt_router()
4354 nh = rt->fib6_nh; in rt6_get_dflt_router()
4355 if (dev == nh->fib_nh_dev && in rt6_get_dflt_router()
4356 ((rt->fib6_flags & (RTF_ADDRCONF | RTF_DEFAULT)) == (RTF_ADDRCONF | RTF_DEFAULT)) && in rt6_get_dflt_router()
4357 ipv6_addr_equal(&nh->fib_nh_gw6, addr)) in rt6_get_dflt_router()
4375 .fc_ifindex = dev->ifindex, in rt6_add_dflt_router()
4392 table->flags |= RT6_TABLE_HAS_DFLT_ROUTER; in rt6_add_dflt_router()
4405 for_each_fib6_node_rt_rcu(&table->tb6_root) { in __rt6_purge_dflt_routers()
4409 if (rt->fib6_flags & (RTF_DEFAULT | RTF_ADDRCONF) && in __rt6_purge_dflt_routers()
4410 (!idev || idev->cnf.accept_ra != 2) && in __rt6_purge_dflt_routers()
4419 table->flags &= ~RT6_TABLE_HAS_DFLT_ROUTER; in __rt6_purge_dflt_routers()
4431 head = &net->ipv6.fib_table_hash[h]; in rt6_purge_dflt_routers()
4433 if (table->flags & RT6_TABLE_HAS_DFLT_ROUTER) in rt6_purge_dflt_routers()
4446 .fc_table = l3mdev_fib_table_by_index(net, rtmsg->rtmsg_ifindex) ? in rtmsg_to_fib6_config()
4448 .fc_ifindex = rtmsg->rtmsg_ifindex, in rtmsg_to_fib6_config()
4449 .fc_metric = rtmsg->rtmsg_metric, in rtmsg_to_fib6_config()
4450 .fc_expires = rtmsg->rtmsg_info, in rtmsg_to_fib6_config()
4451 .fc_dst_len = rtmsg->rtmsg_dst_len, in rtmsg_to_fib6_config()
4452 .fc_src_len = rtmsg->rtmsg_src_len, in rtmsg_to_fib6_config()
4453 .fc_flags = rtmsg->rtmsg_flags, in rtmsg_to_fib6_config()
4454 .fc_type = rtmsg->rtmsg_type, in rtmsg_to_fib6_config()
4458 .fc_dst = rtmsg->rtmsg_dst, in rtmsg_to_fib6_config()
4459 .fc_src = rtmsg->rtmsg_src, in rtmsg_to_fib6_config()
4460 .fc_gateway = rtmsg->rtmsg_gateway, in rtmsg_to_fib6_config()
4470 return -EINVAL; in ipv6_route_ioctl()
4471 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) in ipv6_route_ioctl()
4472 return -EPERM; in ipv6_route_ioctl()
4499 struct net *net = dev_net(dst->dev); in ip6_pkt_drop()
4504 if (netif_is_l3_master(skb->dev) || in ip6_pkt_drop()
4505 dst->dev == net->loopback_dev) in ip6_pkt_drop()
4506 idev = __in6_dev_get_safely(dev_get_by_index_rcu(net, IP6CB(skb)->iif)); in ip6_pkt_drop()
4512 type = ipv6_addr_type(&ipv6_hdr(skb)->daddr); in ip6_pkt_drop()
4527 if (netif_is_l3_master(skb->dev)) in ip6_pkt_drop()
4542 skb->dev = skb_dst(skb)->dev; in ip6_pkt_discard_out()
4553 skb->dev = skb_dst(skb)->dev; in ip6_pkt_prohibit_out()
4568 .fc_table = l3mdev_fib_table(idev->dev) ? : RT6_TABLE_LOCAL, in addrconf_f6i_alloc()
4569 .fc_ifindex = idev->dev->ifindex, in addrconf_f6i_alloc()
4589 f6i->dst_nocount = true; in addrconf_f6i_alloc()
4592 (net->ipv6.devconf_all->disable_policy || in addrconf_f6i_alloc()
4593 idev->cnf.disable_policy)) in addrconf_f6i_alloc()
4594 f6i->dst_nopolicy = true; in addrconf_f6i_alloc()
4608 struct net *net = ((struct arg_dev_net_ip *)arg)->net; in fib6_remove_prefsrc()
4609 struct in6_addr *addr = ((struct arg_dev_net_ip *)arg)->addr; in fib6_remove_prefsrc()
4611 if (!rt->nh && in fib6_remove_prefsrc()
4612 rt != net->ipv6.fib6_null_entry && in fib6_remove_prefsrc()
4613 ipv6_addr_equal(addr, &rt->fib6_prefsrc.addr) && in fib6_remove_prefsrc()
4614 !ipv6_chk_addr(net, addr, rt->fib6_nh->fib_nh_dev, 0)) { in fib6_remove_prefsrc()
4617 rt->fib6_prefsrc.plen = 0; in fib6_remove_prefsrc()
4625 struct net *net = dev_net(ifp->idev->dev); in rt6_remove_prefsrc()
4628 .addr = &ifp->addr, in rt6_remove_prefsrc()
4641 /* RA routes do not use nexthops */ in fib6_clean_tohost()
4642 if (rt->nh) in fib6_clean_tohost()
4645 nh = rt->fib6_nh; in fib6_clean_tohost()
4646 if (((rt->fib6_flags & RTF_RA_ROUTER) == RTF_RA_ROUTER) && in fib6_clean_tohost()
4647 nh->fib_nh_gw_family && ipv6_addr_equal(gateway, &nh->fib_nh_gw6)) in fib6_clean_tohost()
4648 return -1; in fib6_clean_tohost()
4677 fn = rcu_dereference_protected(rt->fib6_node, in rt6_multipath_first_sibling()
4678 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4679 iter = rcu_dereference_protected(fn->leaf, in rt6_multipath_first_sibling()
4680 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4682 if (iter->fib6_metric == rt->fib6_metric && in rt6_multipath_first_sibling()
4685 iter = rcu_dereference_protected(iter->fib6_next, in rt6_multipath_first_sibling()
4686 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4695 if (rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD || in rt6_is_dead()
4696 (rt->fib6_nh->fib_nh_flags & RTNH_F_LINKDOWN && in rt6_is_dead()
4697 ip6_ignore_linkdown(rt->fib6_nh->fib_nh_dev))) in rt6_is_dead()
4709 total += rt->fib6_nh->fib_nh_weight; in rt6_multipath_total_weight()
4711 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) { in rt6_multipath_total_weight()
4713 total += iter->fib6_nh->fib_nh_weight; in rt6_multipath_total_weight()
4721 int upper_bound = -1; in rt6_upper_bound_set()
4724 *weight += rt->fib6_nh->fib_nh_weight; in rt6_upper_bound_set()
4726 total) - 1; in rt6_upper_bound_set()
4728 atomic_set(&rt->fib6_nh->fib_nh_upper_bound, upper_bound); in rt6_upper_bound_set()
4738 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_upper_bound_set()
4751 if (!rt->fib6_nsiblings || rt->should_flush) in rt6_multipath_rebalance()
4769 struct net *net = dev_net(arg->dev); in fib6_ifup()
4771 if (rt != net->ipv6.fib6_null_entry && !rt->nh && in fib6_ifup()
4772 rt->fib6_nh->fib_nh_dev == arg->dev) { in fib6_ifup()
4773 rt->fib6_nh->fib_nh_flags &= ~arg->nh_flags; in fib6_ifup()
4802 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_uses_dev()
4804 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_uses_dev()
4805 if (iter->fib6_nh->fib_nh_dev == dev) in rt6_multipath_uses_dev()
4815 rt->should_flush = 1; in rt6_multipath_flush()
4816 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_flush()
4817 iter->should_flush = 1; in rt6_multipath_flush()
4826 if (rt->fib6_nh->fib_nh_dev == down_dev || in rt6_multipath_dead_count()
4827 rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD) in rt6_multipath_dead_count()
4829 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_dead_count()
4830 if (iter->fib6_nh->fib_nh_dev == down_dev || in rt6_multipath_dead_count()
4831 iter->fib6_nh->fib_nh_flags & RTNH_F_DEAD) in rt6_multipath_dead_count()
4843 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_nh_flags_set()
4844 rt->fib6_nh->fib_nh_flags |= nh_flags; in rt6_multipath_nh_flags_set()
4845 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_nh_flags_set()
4846 if (iter->fib6_nh->fib_nh_dev == dev) in rt6_multipath_nh_flags_set()
4847 iter->fib6_nh->fib_nh_flags |= nh_flags; in rt6_multipath_nh_flags_set()
4854 const struct net_device *dev = arg->dev; in fib6_ifdown()
4857 if (rt == net->ipv6.fib6_null_entry || rt->nh) in fib6_ifdown()
4860 switch (arg->event) { in fib6_ifdown()
4862 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4864 if (rt->should_flush) in fib6_ifdown()
4865 return -1; in fib6_ifdown()
4866 if (!rt->fib6_nsiblings) in fib6_ifdown()
4867 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4872 if (rt->fib6_nsiblings + 1 == count) { in fib6_ifdown()
4874 return -1; in fib6_ifdown()
4881 return -2; in fib6_ifdown()
4883 if (rt->fib6_nh->fib_nh_dev != dev || in fib6_ifdown()
4884 rt->fib6_flags & (RTF_LOCAL | RTF_ANYCAST)) in fib6_ifdown()
4886 rt->fib6_nh->fib_nh_flags |= RTNH_F_LINKDOWN; in fib6_ifdown()
4904 if (net->ipv6.sysctl.skip_notify_on_dev_down) in rt6_sync_down_dev()
4926 struct fib6_info *f6i = arg->f6i; in fib6_nh_mtu_change()
4933 if (nh->fib_nh_dev == arg->dev) { in fib6_nh_mtu_change()
4934 struct inet6_dev *idev = __in6_dev_get(arg->dev); in fib6_nh_mtu_change()
4935 u32 mtu = f6i->fib6_pmtu; in fib6_nh_mtu_change()
4937 if (mtu >= arg->mtu || in fib6_nh_mtu_change()
4938 (mtu < arg->mtu && mtu == idev->cnf.mtu6)) in fib6_nh_mtu_change()
4939 fib6_metric_set(f6i, RTAX_MTU, arg->mtu); in fib6_nh_mtu_change()
4942 rt6_exceptions_update_pmtu(idev, nh, arg->mtu); in fib6_nh_mtu_change()
4956 We still use this lock to block changes in rt6_mtu_change_route()
4960 idev = __in6_dev_get(arg->dev); in rt6_mtu_change_route()
4967 arg->f6i = f6i; in rt6_mtu_change_route()
4968 if (f6i->nh) { in rt6_mtu_change_route()
4970 return nexthop_for_each_fib6_nh(f6i->nh, fib6_nh_mtu_change, in rt6_mtu_change_route()
4974 return fib6_nh_mtu_change(f6i->fib6_nh, arg); in rt6_mtu_change_route()
5013 struct rtmsg *rtm; in rtm_to_fib6_config() local
5018 err = nlmsg_parse_deprecated(nlh, sizeof(*rtm), tb, RTA_MAX, in rtm_to_fib6_config()
5023 err = -EINVAL; in rtm_to_fib6_config()
5024 rtm = nlmsg_data(nlh); in rtm_to_fib6_config()
5026 if (rtm->rtm_tos) { in rtm_to_fib6_config()
5033 .fc_table = rtm->rtm_table, in rtm_to_fib6_config()
5034 .fc_dst_len = rtm->rtm_dst_len, in rtm_to_fib6_config()
5035 .fc_src_len = rtm->rtm_src_len, in rtm_to_fib6_config()
5037 .fc_protocol = rtm->rtm_protocol, in rtm_to_fib6_config()
5038 .fc_type = rtm->rtm_type, in rtm_to_fib6_config()
5042 .fc_nlinfo.nl_net = sock_net(skb->sk), in rtm_to_fib6_config()
5045 if (rtm->rtm_type == RTN_UNREACHABLE || in rtm_to_fib6_config()
5046 rtm->rtm_type == RTN_BLACKHOLE || in rtm_to_fib6_config()
5047 rtm->rtm_type == RTN_PROHIBIT || in rtm_to_fib6_config()
5048 rtm->rtm_type == RTN_THROW) in rtm_to_fib6_config()
5049 cfg->fc_flags |= RTF_REJECT; in rtm_to_fib6_config()
5051 if (rtm->rtm_type == RTN_LOCAL) in rtm_to_fib6_config()
5052 cfg->fc_flags |= RTF_LOCAL; in rtm_to_fib6_config()
5054 if (rtm->rtm_flags & RTM_F_CLONED) in rtm_to_fib6_config()
5055 cfg->fc_flags |= RTF_CACHE; in rtm_to_fib6_config()
5057 cfg->fc_flags |= (rtm->rtm_flags & RTNH_F_ONLINK); in rtm_to_fib6_config()
5066 cfg->fc_nh_id = nla_get_u32(tb[RTA_NH_ID]); in rtm_to_fib6_config()
5070 cfg->fc_gateway = nla_get_in6_addr(tb[RTA_GATEWAY]); in rtm_to_fib6_config()
5071 cfg->fc_flags |= RTF_GATEWAY; in rtm_to_fib6_config()
5079 int plen = (rtm->rtm_dst_len + 7) >> 3; in rtm_to_fib6_config()
5084 nla_memcpy(&cfg->fc_dst, tb[RTA_DST], plen); in rtm_to_fib6_config()
5088 int plen = (rtm->rtm_src_len + 7) >> 3; in rtm_to_fib6_config()
5093 nla_memcpy(&cfg->fc_src, tb[RTA_SRC], plen); in rtm_to_fib6_config()
5097 cfg->fc_prefsrc = nla_get_in6_addr(tb[RTA_PREFSRC]); in rtm_to_fib6_config()
5100 cfg->fc_ifindex = nla_get_u32(tb[RTA_OIF]); in rtm_to_fib6_config()
5103 cfg->fc_metric = nla_get_u32(tb[RTA_PRIORITY]); in rtm_to_fib6_config()
5106 cfg->fc_mx = nla_data(tb[RTA_METRICS]); in rtm_to_fib6_config()
5107 cfg->fc_mx_len = nla_len(tb[RTA_METRICS]); in rtm_to_fib6_config()
5111 cfg->fc_table = nla_get_u32(tb[RTA_TABLE]); in rtm_to_fib6_config()
5114 cfg->fc_mp = nla_data(tb[RTA_MULTIPATH]); in rtm_to_fib6_config()
5115 cfg->fc_mp_len = nla_len(tb[RTA_MULTIPATH]); in rtm_to_fib6_config()
5117 err = lwtunnel_valid_encap_type_attr(cfg->fc_mp, in rtm_to_fib6_config()
5118 cfg->fc_mp_len, extack); in rtm_to_fib6_config()
5128 cfg->fc_flags |= RTF_PREF(pref); in rtm_to_fib6_config()
5132 cfg->fc_encap = tb[RTA_ENCAP]; in rtm_to_fib6_config()
5135 cfg->fc_encap_type = nla_get_u16(tb[RTA_ENCAP_TYPE]); in rtm_to_fib6_config()
5137 err = lwtunnel_valid_encap_type(cfg->fc_encap_type, extack); in rtm_to_fib6_config()
5146 cfg->fc_expires = jiffies_to_clock_t(timeout * HZ); in rtm_to_fib6_config()
5147 cfg->fc_flags |= RTF_EXPIRES; in rtm_to_fib6_config()
5168 int err = -EEXIST; in ip6_route_info_append()
5172 if (rt6_duplicate_nexthop(nh->fib6_info, rt)) in ip6_route_info_append()
5178 return -ENOMEM; in ip6_route_info_append()
5179 nh->fib6_info = rt; in ip6_route_info_append()
5180 memcpy(&nh->r_cfg, r_cfg, sizeof(*r_cfg)); in ip6_route_info_append()
5181 list_add_tail(&nh->next, rt6_nh_list); in ip6_route_info_append()
5199 if ((nlflags & NLM_F_APPEND) && rt_last && rt_last->fib6_nsiblings) { in ip6_route_mpath_notify()
5200 rt = list_first_or_null_rcu(&rt_last->fib6_siblings, in ip6_route_mpath_notify()
5219 fn = rcu_dereference(rt->fib6_node); in ip6_route_mpath_should_notify()
5223 leaf = rcu_dereference(fn->leaf); in ip6_route_mpath_should_notify()
5228 (rt_can_ecmp && rt->fib6_metric == leaf->fib6_metric && in ip6_route_mpath_should_notify()
5242 return -EINVAL; in fib6_gw_from_attr()
5254 struct nl_info *info = &cfg->fc_nlinfo; in ip6_route_multipath_add()
5265 int replace = (cfg->fc_nlinfo.nlh && in ip6_route_multipath_add()
5266 (cfg->fc_nlinfo.nlh->nlmsg_flags & NLM_F_REPLACE)); in ip6_route_multipath_add()
5270 if (info->nlh && info->nlh->nlmsg_flags & NLM_F_APPEND) in ip6_route_multipath_add()
5273 remaining = cfg->fc_mp_len; in ip6_route_multipath_add()
5274 rtnh = (struct rtnexthop *)cfg->fc_mp; in ip6_route_multipath_add()
5281 if (rtnh->rtnh_ifindex) in ip6_route_multipath_add()
5282 r_cfg.fc_ifindex = rtnh->rtnh_ifindex; in ip6_route_multipath_add()
5307 r_cfg.fc_flags |= (rtnh->rtnh_flags & RTNH_F_ONLINK); in ip6_route_multipath_add()
5315 err = -EINVAL; in ip6_route_multipath_add()
5322 rt->fib6_nh->fib_nh_weight = rtnh->rtnh_hops + 1; in ip6_route_multipath_add()
5324 err = ip6_route_info_append(info->nl_net, &rt6_nh_list, in ip6_route_multipath_add()
5336 "Invalid nexthop configuration - no valid nexthops"); in ip6_route_multipath_add()
5337 return -EINVAL; in ip6_route_multipath_add()
5344 info->skip_notify = 1; in ip6_route_multipath_add()
5349 info->skip_notify_kernel = 1; in ip6_route_multipath_add()
5353 err = __ip6_ins_rt(nh->fib6_info, info, extack); in ip6_route_multipath_add()
5363 rt_last = nh->fib6_info; in ip6_route_multipath_add()
5367 rt_notif = nh->fib6_info; in ip6_route_multipath_add()
5376 if (cfg->fc_nlinfo.nlh) { in ip6_route_multipath_add()
5377 cfg->fc_nlinfo.nlh->nlmsg_flags &= ~(NLM_F_EXCL | in ip6_route_multipath_add()
5379 cfg->fc_nlinfo.nlh->nlmsg_flags |= NLM_F_CREATE; in ip6_route_multipath_add()
5384 /* An in-kernel notification should only be sent in case the new in ip6_route_multipath_add()
5392 if (rt_notif->fib6_nsiblings != nhn - 1) in ip6_route_multipath_add()
5397 err = call_fib6_multipath_entry_notifiers(info->nl_net, in ip6_route_multipath_add()
5399 nhn - 1, extack); in ip6_route_multipath_add()
5423 ip6_route_del(&nh->r_cfg, extack); in ip6_route_multipath_add()
5428 fib6_info_release(nh->fib6_info); in ip6_route_multipath_add()
5429 list_del(&nh->next); in ip6_route_multipath_add()
5446 remaining = cfg->fc_mp_len; in ip6_route_multipath_del()
5447 rtnh = (struct rtnexthop *)cfg->fc_mp; in ip6_route_multipath_del()
5452 if (rtnh->rtnh_ifindex) in ip6_route_multipath_del()
5453 r_cfg.fc_ifindex = rtnh->rtnh_ifindex; in ip6_route_multipath_del()
5493 !nexthop_find_by_id(sock_net(skb->sk), cfg.fc_nh_id)) { in inet6_rtm_delroute()
5495 return -EINVAL; in inet6_rtm_delroute()
5534 if (nh->fib_nh_lws) { in rt6_nh_nlmsg_size()
5536 *nexthop_len += lwtunnel_get_encap_size(nh->fib_nh_lws); in rt6_nh_nlmsg_size()
5548 if (f6i->nh) { in rt6_nlmsg_size()
5550 nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_nlmsg_size, in rt6_nlmsg_size()
5553 struct fib6_nh *nh = f6i->fib6_nh; in rt6_nlmsg_size()
5557 if (f6i->fib6_nsiblings) { in rt6_nlmsg_size()
5562 list_for_each_entry_rcu(sibling, &f6i->fib6_siblings, in rt6_nlmsg_size()
5564 rt6_nh_nlmsg_size(sibling->fib6_nh, &nexthop_len); in rt6_nlmsg_size()
5569 nexthop_len += lwtunnel_get_encap_size(nh->fib_nh_lws); in rt6_nlmsg_size()
5606 if (fib_nexthop_info(skb, &fib6_nh->nh_common, AF_INET6, in rt6_fill_node_nexthop()
5614 return -EMSGSIZE; in rt6_fill_node_nexthop()
5628 struct rtmsg *rtm; in rt6_fill_node() local
5631 nlh = nlmsg_put(skb, portid, seq, type, sizeof(*rtm), flags); in rt6_fill_node()
5633 return -EMSGSIZE; in rt6_fill_node()
5636 rt6_dst = &rt6->rt6i_dst; in rt6_fill_node()
5637 rt6_src = &rt6->rt6i_src; in rt6_fill_node()
5638 rt6_flags = rt6->rt6i_flags; in rt6_fill_node()
5640 rt6_dst = &rt->fib6_dst; in rt6_fill_node()
5641 rt6_src = &rt->fib6_src; in rt6_fill_node()
5642 rt6_flags = rt->fib6_flags; in rt6_fill_node()
5645 rtm = nlmsg_data(nlh); in rt6_fill_node()
5646 rtm->rtm_family = AF_INET6; in rt6_fill_node()
5647 rtm->rtm_dst_len = rt6_dst->plen; in rt6_fill_node()
5648 rtm->rtm_src_len = rt6_src->plen; in rt6_fill_node()
5649 rtm->rtm_tos = 0; in rt6_fill_node()
5650 if (rt->fib6_table) in rt6_fill_node()
5651 table = rt->fib6_table->tb6_id; in rt6_fill_node()
5654 rtm->rtm_table = table < 256 ? table : RT_TABLE_COMPAT; in rt6_fill_node()
5658 rtm->rtm_type = rt->fib6_type; in rt6_fill_node()
5659 rtm->rtm_flags = 0; in rt6_fill_node()
5660 rtm->rtm_scope = RT_SCOPE_UNIVERSE; in rt6_fill_node()
5661 rtm->rtm_protocol = rt->fib6_protocol; in rt6_fill_node()
5664 rtm->rtm_flags |= RTM_F_CLONED; in rt6_fill_node()
5669 rtm->rtm_dst_len = 128; in rt6_fill_node()
5670 } else if (rtm->rtm_dst_len) in rt6_fill_node()
5671 if (nla_put_in6_addr(skb, RTA_DST, &rt6_dst->addr)) in rt6_fill_node()
5677 rtm->rtm_src_len = 128; in rt6_fill_node()
5678 } else if (rtm->rtm_src_len && in rt6_fill_node()
5679 nla_put_in6_addr(skb, RTA_SRC, &rt6_src->addr)) in rt6_fill_node()
5684 if (ipv6_addr_is_multicast(&rt6_dst->addr)) { in rt6_fill_node()
5685 int err = ip6mr_get_route(net, skb, rtm, portid); in rt6_fill_node()
5702 if (rt->fib6_prefsrc.plen) { in rt6_fill_node()
5704 saddr_buf = rt->fib6_prefsrc.addr; in rt6_fill_node()
5709 pmetrics = dst ? dst_metrics_ptr(dst) : rt->fib6_metrics->metrics; in rt6_fill_node()
5713 if (nla_put_u32(skb, RTA_PRIORITY, rt->fib6_metric)) in rt6_fill_node()
5721 nla_put_in6_addr(skb, RTA_GATEWAY, &rt6->rt6i_gateway)) in rt6_fill_node()
5724 if (dst->dev && nla_put_u32(skb, RTA_OIF, dst->dev->ifindex)) in rt6_fill_node()
5727 if (dst->lwtstate && in rt6_fill_node()
5728 lwtunnel_fill_encap(skb, dst->lwtstate, RTA_ENCAP, RTA_ENCAP_TYPE) < 0) in rt6_fill_node()
5730 } else if (rt->fib6_nsiblings) { in rt6_fill_node()
5738 if (fib_add_nexthop(skb, &rt->fib6_nh->nh_common, in rt6_fill_node()
5739 rt->fib6_nh->fib_nh_weight, AF_INET6, in rt6_fill_node()
5745 list_for_each_entry_rcu(sibling, &rt->fib6_siblings, in rt6_fill_node()
5747 if (fib_add_nexthop(skb, &sibling->fib6_nh->nh_common, in rt6_fill_node()
5748 sibling->fib6_nh->fib_nh_weight, in rt6_fill_node()
5759 } else if (rt->nh) { in rt6_fill_node()
5760 if (nla_put_u32(skb, RTA_NH_ID, rt->nh->id)) in rt6_fill_node()
5763 if (nexthop_is_blackhole(rt->nh)) in rt6_fill_node()
5764 rtm->rtm_type = RTN_BLACKHOLE; in rt6_fill_node()
5766 if (READ_ONCE(net->ipv4.sysctl_nexthop_compat_mode) && in rt6_fill_node()
5767 rt6_fill_node_nexthop(skb, rt->nh, &nh_flags) < 0) in rt6_fill_node()
5770 rtm->rtm_flags |= nh_flags; in rt6_fill_node()
5772 if (fib_nexthop_info(skb, &rt->fib6_nh->nh_common, AF_INET6, in rt6_fill_node()
5776 rtm->rtm_flags |= nh_flags; in rt6_fill_node()
5780 expires = dst ? dst->expires : rt->expires; in rt6_fill_node()
5781 expires -= jiffies; in rt6_fill_node()
5785 if (READ_ONCE(rt->offload)) in rt6_fill_node()
5786 rtm->rtm_flags |= RTM_F_OFFLOAD; in rt6_fill_node()
5787 if (READ_ONCE(rt->trap)) in rt6_fill_node()
5788 rtm->rtm_flags |= RTM_F_TRAP; in rt6_fill_node()
5789 if (READ_ONCE(rt->offload_failed)) in rt6_fill_node()
5790 rtm->rtm_flags |= RTM_F_OFFLOAD_FAILED; in rt6_fill_node()
5793 if (rtnl_put_cacheinfo(skb, dst, 0, expires, dst ? dst->error : 0) < 0) in rt6_fill_node()
5805 return -EMSGSIZE; in rt6_fill_node()
5812 if (nh->fib_nh_dev == dev) in fib6_info_nh_uses_dev()
5821 if (f6i->nh) { in fib6_info_uses_dev()
5824 return !!nexthop_for_each_fib6_nh(f6i->nh, in fib6_info_uses_dev()
5829 if (f6i->fib6_nh->fib_nh_dev == dev) in fib6_info_uses_dev()
5832 if (f6i->fib6_nsiblings) { in fib6_info_uses_dev()
5836 &f6i->fib6_siblings, fib6_siblings) { in fib6_info_uses_dev()
5837 if (sibling->fib6_nh->fib_nh_dev == dev) in fib6_info_uses_dev()
5856 struct rt6_rtnl_dump_arg *dump = w->dump; in rt6_nh_dump_exceptions()
5866 hlist_for_each_entry(rt6_ex, &bucket->chain, hlist) { in rt6_nh_dump_exceptions()
5867 if (w->skip) { in rt6_nh_dump_exceptions()
5868 w->skip--; in rt6_nh_dump_exceptions()
5883 if (rt6_check_expired(rt6_ex->rt6i)) { in rt6_nh_dump_exceptions()
5884 w->count++; in rt6_nh_dump_exceptions()
5888 err = rt6_fill_node(dump->net, dump->skb, w->rt, in rt6_nh_dump_exceptions()
5889 &rt6_ex->rt6i->dst, NULL, NULL, 0, in rt6_nh_dump_exceptions()
5891 NETLINK_CB(dump->cb->skb).portid, in rt6_nh_dump_exceptions()
5892 dump->cb->nlh->nlmsg_seq, w->flags); in rt6_nh_dump_exceptions()
5896 w->count++; in rt6_nh_dump_exceptions()
5904 /* Return -1 if done with node, number of handled routes on partial dump */
5908 struct fib_dump_filter *filter = &arg->filter; in rt6_dump_route()
5910 struct net *net = arg->net; in rt6_dump_route()
5913 if (rt == net->ipv6.fib6_null_entry) in rt6_dump_route()
5914 return -1; in rt6_dump_route()
5916 if ((filter->flags & RTM_F_PREFIX) && in rt6_dump_route()
5917 !(rt->fib6_flags & RTF_PREFIX_RT)) { in rt6_dump_route()
5919 return -1; in rt6_dump_route()
5921 if (filter->filter_set && in rt6_dump_route()
5922 ((filter->rt_type && rt->fib6_type != filter->rt_type) || in rt6_dump_route()
5923 (filter->dev && !fib6_info_uses_dev(rt, filter->dev)) || in rt6_dump_route()
5924 (filter->protocol && rt->fib6_protocol != filter->protocol))) { in rt6_dump_route()
5925 return -1; in rt6_dump_route()
5928 if (filter->filter_set || in rt6_dump_route()
5929 !filter->dump_routes || !filter->dump_exceptions) { in rt6_dump_route()
5933 if (filter->dump_routes) { in rt6_dump_route()
5935 skip--; in rt6_dump_route()
5937 if (rt6_fill_node(net, arg->skb, rt, NULL, NULL, NULL, in rt6_dump_route()
5939 NETLINK_CB(arg->cb->skb).portid, in rt6_dump_route()
5940 arg->cb->nlh->nlmsg_seq, flags)) { in rt6_dump_route()
5947 if (filter->dump_exceptions) { in rt6_dump_route()
5956 if (rt->nh) { in rt6_dump_route()
5957 err = nexthop_for_each_fib6_nh(rt->nh, in rt6_dump_route()
5961 err = rt6_nh_dump_exceptions(rt->fib6_nh, &w); in rt6_dump_route()
5969 return -1; in rt6_dump_route()
5977 struct rtmsg *rtm; in inet6_rtm_valid_getroute_req() local
5980 if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*rtm))) { in inet6_rtm_valid_getroute_req()
5983 return -EINVAL; in inet6_rtm_valid_getroute_req()
5987 return nlmsg_parse_deprecated(nlh, sizeof(*rtm), tb, RTA_MAX, in inet6_rtm_valid_getroute_req()
5990 rtm = nlmsg_data(nlh); in inet6_rtm_valid_getroute_req()
5991 if ((rtm->rtm_src_len && rtm->rtm_src_len != 128) || in inet6_rtm_valid_getroute_req()
5992 (rtm->rtm_dst_len && rtm->rtm_dst_len != 128) || in inet6_rtm_valid_getroute_req()
5993 rtm->rtm_table || rtm->rtm_protocol || rtm->rtm_scope || in inet6_rtm_valid_getroute_req()
5994 rtm->rtm_type) { in inet6_rtm_valid_getroute_req()
5996 return -EINVAL; in inet6_rtm_valid_getroute_req()
5998 if (rtm->rtm_flags & ~RTM_F_FIB_MATCH) { in inet6_rtm_valid_getroute_req()
6001 return -EINVAL; in inet6_rtm_valid_getroute_req()
6004 err = nlmsg_parse_deprecated_strict(nlh, sizeof(*rtm), tb, RTA_MAX, in inet6_rtm_valid_getroute_req()
6009 if ((tb[RTA_SRC] && !rtm->rtm_src_len) || in inet6_rtm_valid_getroute_req()
6010 (tb[RTA_DST] && !rtm->rtm_dst_len)) { in inet6_rtm_valid_getroute_req()
6012 return -EINVAL; in inet6_rtm_valid_getroute_req()
6032 return -EINVAL; in inet6_rtm_valid_getroute_req()
6042 struct net *net = sock_net(in_skb->sk); in inet6_rtm_getroute()
6049 struct rtmsg *rtm; in inet6_rtm_getroute() local
6057 err = -EINVAL; in inet6_rtm_getroute()
6058 rtm = nlmsg_data(nlh); in inet6_rtm_getroute()
6059 fl6.flowlabel = ip6_make_flowinfo(rtm->rtm_tos, 0); in inet6_rtm_getroute()
6060 fibmatch = !!(rtm->rtm_flags & RTM_F_FIB_MATCH); in inet6_rtm_getroute()
6114 err = -ENODEV; in inet6_rtm_getroute()
6134 if (rt->dst.error) { in inet6_rtm_getroute()
6135 err = rt->dst.error; in inet6_rtm_getroute()
6140 if (rt == net->ipv6.ip6_null_entry) { in inet6_rtm_getroute()
6141 err = rt->dst.error; in inet6_rtm_getroute()
6149 err = -ENOBUFS; in inet6_rtm_getroute()
6153 skb_dst_set(skb, &rt->dst); in inet6_rtm_getroute()
6156 from = rcu_dereference(rt->from); in inet6_rtm_getroute()
6162 nlh->nlmsg_seq, 0); in inet6_rtm_getroute()
6167 nlh->nlmsg_seq, 0); in inet6_rtm_getroute()
6169 err = -ENETUNREACH; in inet6_rtm_getroute()
6187 struct net *net = info->nl_net; in inet6_rt_notify()
6191 err = -ENOBUFS; in inet6_rt_notify()
6192 seq = info->nlh ? info->nlh->nlmsg_seq : 0; in inet6_rt_notify()
6199 event, info->portid, seq, nlm_flags); in inet6_rt_notify()
6201 /* -EMSGSIZE implies BUG in rt6_nlmsg_size() */ in inet6_rt_notify()
6202 WARN_ON(err == -EMSGSIZE); in inet6_rt_notify()
6206 rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, in inet6_rt_notify()
6207 info->nlh, GFP_ATOMIC); in inet6_rt_notify()
6217 u32 seq = info->nlh ? info->nlh->nlmsg_seq : 0; in fib6_rt_update()
6219 int err = -ENOBUFS; in fib6_rt_update()
6226 RTM_NEWROUTE, info->portid, seq, NLM_F_REPLACE); in fib6_rt_update()
6228 /* -EMSGSIZE implies BUG in rt6_nlmsg_size() */ in fib6_rt_update()
6229 WARN_ON(err == -EMSGSIZE); in fib6_rt_update()
6233 rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, in fib6_rt_update()
6234 info->nlh, gfp_any()); in fib6_rt_update()
6247 if (READ_ONCE(f6i->offload) == offload && in fib6_info_hw_flags_set()
6248 READ_ONCE(f6i->trap) == trap && in fib6_info_hw_flags_set()
6249 READ_ONCE(f6i->offload_failed) == offload_failed) in fib6_info_hw_flags_set()
6252 WRITE_ONCE(f6i->offload, offload); in fib6_info_hw_flags_set()
6253 WRITE_ONCE(f6i->trap, trap); in fib6_info_hw_flags_set()
6256 if (net->ipv6.sysctl.fib_notify_on_flag_change == 2 && in fib6_info_hw_flags_set()
6257 READ_ONCE(f6i->offload_failed) == offload_failed) in fib6_info_hw_flags_set()
6260 WRITE_ONCE(f6i->offload_failed, offload_failed); in fib6_info_hw_flags_set()
6262 if (!rcu_access_pointer(f6i->fib6_node)) in fib6_info_hw_flags_set()
6268 if (!net->ipv6.sysctl.fib_notify_on_flag_change) in fib6_info_hw_flags_set()
6273 err = -ENOBUFS; in fib6_info_hw_flags_set()
6280 /* -EMSGSIZE implies BUG in rt6_nlmsg_size() */ in fib6_info_hw_flags_set()
6281 WARN_ON(err == -EMSGSIZE); in fib6_info_hw_flags_set()
6300 if (!(dev->flags & IFF_LOOPBACK)) in ip6_route_dev_notify()
6304 net->ipv6.fib6_null_entry->fib6_nh->fib_nh_dev = dev; in ip6_route_dev_notify()
6305 net->ipv6.ip6_null_entry->dst.dev = dev; in ip6_route_dev_notify()
6306 net->ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(dev); in ip6_route_dev_notify()
6308 net->ipv6.ip6_prohibit_entry->dst.dev = dev; in ip6_route_dev_notify()
6309 net->ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(dev); in ip6_route_dev_notify()
6310 net->ipv6.ip6_blk_hole_entry->dst.dev = dev; in ip6_route_dev_notify()
6311 net->ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(dev); in ip6_route_dev_notify()
6314 dev->reg_state != NETREG_UNREGISTERED) { in ip6_route_dev_notify()
6318 in6_dev_put_clear(&net->ipv6.ip6_null_entry->rt6i_idev); in ip6_route_dev_notify()
6320 in6_dev_put_clear(&net->ipv6.ip6_prohibit_entry->rt6i_idev); in ip6_route_dev_notify()
6321 in6_dev_put_clear(&net->ipv6.ip6_blk_hole_entry->rt6i_idev); in ip6_route_dev_notify()
6335 struct net *net = (struct net *)seq->private; in rt6_stats_seq_show()
6337 net->ipv6.rt6_stats->fib_nodes, in rt6_stats_seq_show()
6338 net->ipv6.rt6_stats->fib_route_nodes, in rt6_stats_seq_show()
6339 atomic_read(&net->ipv6.rt6_stats->fib_rt_alloc), in rt6_stats_seq_show()
6340 net->ipv6.rt6_stats->fib_rt_entries, in rt6_stats_seq_show()
6341 net->ipv6.rt6_stats->fib_rt_cache, in rt6_stats_seq_show()
6342 dst_entries_get_slow(&net->ipv6.ip6_dst_ops), in rt6_stats_seq_show()
6343 net->ipv6.rt6_stats->fib_discarded_routes); in rt6_stats_seq_show()
6358 return -EINVAL; in ipv6_sysctl_rtcache_flush()
6364 net = (struct net *)ctl->extra1; in ipv6_sysctl_rtcache_flush()
6365 delay = net->ipv6.sysctl.flush_delay; in ipv6_sysctl_rtcache_flush()
6462 table[0].data = &net->ipv6.sysctl.ip6_rt_max_size; in ipv6_route_sysctl_init()
6463 table[1].data = &net->ipv6.ip6_dst_ops.gc_thresh; in ipv6_route_sysctl_init()
6464 table[2].data = &net->ipv6.sysctl.flush_delay; in ipv6_route_sysctl_init()
6466 table[3].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval; in ipv6_route_sysctl_init()
6467 table[4].data = &net->ipv6.sysctl.ip6_rt_gc_timeout; in ipv6_route_sysctl_init()
6468 table[5].data = &net->ipv6.sysctl.ip6_rt_gc_interval; in ipv6_route_sysctl_init()
6469 table[6].data = &net->ipv6.sysctl.ip6_rt_gc_elasticity; in ipv6_route_sysctl_init()
6470 table[7].data = &net->ipv6.sysctl.ip6_rt_mtu_expires; in ipv6_route_sysctl_init()
6471 table[8].data = &net->ipv6.sysctl.ip6_rt_min_advmss; in ipv6_route_sysctl_init()
6472 table[9].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval; in ipv6_route_sysctl_init()
6473 table[10].data = &net->ipv6.sysctl.skip_notify_on_dev_down; in ipv6_route_sysctl_init()
6476 if (net->user_ns != &init_user_ns) in ipv6_route_sysctl_init()
6486 if (net->user_ns != &init_user_ns) in ipv6_route_sysctl_table_size()
6495 int ret = -ENOMEM; in ip6_route_net_init()
6497 memcpy(&net->ipv6.ip6_dst_ops, &ip6_dst_ops_template, in ip6_route_net_init()
6498 sizeof(net->ipv6.ip6_dst_ops)); in ip6_route_net_init()
6500 if (dst_entries_init(&net->ipv6.ip6_dst_ops) < 0) in ip6_route_net_init()
6503 net->ipv6.fib6_null_entry = fib6_info_alloc(GFP_KERNEL, true); in ip6_route_net_init()
6504 if (!net->ipv6.fib6_null_entry) in ip6_route_net_init()
6506 memcpy(net->ipv6.fib6_null_entry, &fib6_null_entry_template, in ip6_route_net_init()
6507 sizeof(*net->ipv6.fib6_null_entry)); in ip6_route_net_init()
6509 net->ipv6.ip6_null_entry = kmemdup(&ip6_null_entry_template, in ip6_route_net_init()
6510 sizeof(*net->ipv6.ip6_null_entry), in ip6_route_net_init()
6512 if (!net->ipv6.ip6_null_entry) in ip6_route_net_init()
6514 net->ipv6.ip6_null_entry->dst.ops = &net->ipv6.ip6_dst_ops; in ip6_route_net_init()
6515 dst_init_metrics(&net->ipv6.ip6_null_entry->dst, in ip6_route_net_init()
6517 INIT_LIST_HEAD(&net->ipv6.ip6_null_entry->dst.rt_uncached); in ip6_route_net_init()
6520 net->ipv6.fib6_has_custom_rules = false; in ip6_route_net_init()
6521 net->ipv6.ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template, in ip6_route_net_init()
6522 sizeof(*net->ipv6.ip6_prohibit_entry), in ip6_route_net_init()
6524 if (!net->ipv6.ip6_prohibit_entry) in ip6_route_net_init()
6526 net->ipv6.ip6_prohibit_entry->dst.ops = &net->ipv6.ip6_dst_ops; in ip6_route_net_init()
6527 dst_init_metrics(&net->ipv6.ip6_prohibit_entry->dst, in ip6_route_net_init()
6529 INIT_LIST_HEAD(&net->ipv6.ip6_prohibit_entry->dst.rt_uncached); in ip6_route_net_init()
6531 net->ipv6.ip6_blk_hole_entry = kmemdup(&ip6_blk_hole_entry_template, in ip6_route_net_init()
6532 sizeof(*net->ipv6.ip6_blk_hole_entry), in ip6_route_net_init()
6534 if (!net->ipv6.ip6_blk_hole_entry) in ip6_route_net_init()
6536 net->ipv6.ip6_blk_hole_entry->dst.ops = &net->ipv6.ip6_dst_ops; in ip6_route_net_init()
6537 dst_init_metrics(&net->ipv6.ip6_blk_hole_entry->dst, in ip6_route_net_init()
6539 INIT_LIST_HEAD(&net->ipv6.ip6_blk_hole_entry->dst.rt_uncached); in ip6_route_net_init()
6541 net->ipv6.fib6_routes_require_src = 0; in ip6_route_net_init()
6545 net->ipv6.sysctl.flush_delay = 0; in ip6_route_net_init()
6546 net->ipv6.sysctl.ip6_rt_max_size = INT_MAX; in ip6_route_net_init()
6547 net->ipv6.sysctl.ip6_rt_gc_min_interval = HZ / 2; in ip6_route_net_init()
6548 net->ipv6.sysctl.ip6_rt_gc_timeout = 60*HZ; in ip6_route_net_init()
6549 net->ipv6.sysctl.ip6_rt_gc_interval = 30*HZ; in ip6_route_net_init()
6550 net->ipv6.sysctl.ip6_rt_gc_elasticity = 9; in ip6_route_net_init()
6551 net->ipv6.sysctl.ip6_rt_mtu_expires = 10*60*HZ; in ip6_route_net_init()
6552 net->ipv6.sysctl.ip6_rt_min_advmss = IPV6_MIN_MTU - 20 - 40; in ip6_route_net_init()
6553 net->ipv6.sysctl.skip_notify_on_dev_down = 0; in ip6_route_net_init()
6555 atomic_set(&net->ipv6.ip6_rt_gc_expire, 30*HZ); in ip6_route_net_init()
6563 kfree(net->ipv6.ip6_prohibit_entry); in ip6_route_net_init()
6565 kfree(net->ipv6.ip6_null_entry); in ip6_route_net_init()
6568 kfree(net->ipv6.fib6_null_entry); in ip6_route_net_init()
6570 dst_entries_destroy(&net->ipv6.ip6_dst_ops); in ip6_route_net_init()
6577 kfree(net->ipv6.fib6_null_entry); in ip6_route_net_exit()
6578 kfree(net->ipv6.ip6_null_entry); in ip6_route_net_exit()
6580 kfree(net->ipv6.ip6_prohibit_entry); in ip6_route_net_exit()
6581 kfree(net->ipv6.ip6_blk_hole_entry); in ip6_route_net_exit()
6583 dst_entries_destroy(&net->ipv6.ip6_dst_ops); in ip6_route_net_exit()
6589 if (!proc_create_net("ipv6_route", 0, net->proc_net, in ip6_route_net_init_late()
6592 return -ENOMEM; in ip6_route_net_init_late()
6594 if (!proc_create_net_single("rt6_stats", 0444, net->proc_net, in ip6_route_net_init_late()
6596 remove_proc_entry("ipv6_route", net->proc_net); in ip6_route_net_init_late()
6597 return -ENOMEM; in ip6_route_net_init_late()
6606 remove_proc_entry("ipv6_route", net->proc_net); in ip6_route_net_exit_late()
6607 remove_proc_entry("rt6_stats", net->proc_net); in ip6_route_net_exit_late()
6621 return -ENOMEM; in ipv6_inetpeer_init()
6623 net->ipv6.peers = bp; in ipv6_inetpeer_init()
6629 struct inet_peer_base *bp = net->ipv6.peers; in ipv6_inetpeer_exit()
6631 net->ipv6.peers = NULL; in ipv6_inetpeer_exit()
6648 .priority = ADDRCONF_NOTIFY_PRIORITY - 10,
6656 init_net.ipv6.fib6_null_entry->fib6_nh->fib_nh_dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6657 init_net.ipv6.ip6_null_entry->dst.dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6658 init_net.ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev); in ip6_route_init_special_entries()
6660 init_net.ipv6.ip6_prohibit_entry->dst.dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6661 init_net.ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev); in ip6_route_init_special_entries()
6662 init_net.ipv6.ip6_blk_hole_entry->dst.dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6663 init_net.ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev); in ip6_route_init_special_entries()
6709 ret = -ENOMEM; in ip6_route_init()
6777 INIT_LIST_HEAD(&ul->head); in ip6_route_init()
6778 INIT_LIST_HEAD(&ul->quarantine); in ip6_route_init()
6779 spin_lock_init(&ul->lock); in ip6_route_init()