Lines Matching +full:use +full:- +full:rtm
1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * FIB front-end.
14 * - respect outgoing interface
15 * - select from (probably) reachable routers (i.e.
17 * - always select the same router if it is (probably)
18 * reachable. otherwise, round-robin the list.
79 RT6_NUD_FAIL_HARD = -3,
80 RT6_NUD_FAIL_PROBE = -2,
81 RT6_NUD_FAIL_DO_RR = -1,
140 rt->rt6i_uncached_list = ul; in rt6_uncached_list_add()
142 spin_lock_bh(&ul->lock); in rt6_uncached_list_add()
143 list_add_tail(&rt->rt6i_uncached, &ul->head); in rt6_uncached_list_add()
144 spin_unlock_bh(&ul->lock); in rt6_uncached_list_add()
149 if (!list_empty(&rt->rt6i_uncached)) { in rt6_uncached_list_del()
150 struct uncached_list *ul = rt->rt6i_uncached_list; in rt6_uncached_list_del()
151 struct net *net = dev_net(rt->dst.dev); in rt6_uncached_list_del()
153 spin_lock_bh(&ul->lock); in rt6_uncached_list_del()
154 list_del(&rt->rt6i_uncached); in rt6_uncached_list_del()
155 atomic_dec(&net->ipv6.rt6_stats->fib_rt_uncache); in rt6_uncached_list_del()
156 spin_unlock_bh(&ul->lock); in rt6_uncached_list_del()
162 struct net_device *loopback_dev = net->loopback_dev; in rt6_uncached_list_flush_dev()
172 spin_lock_bh(&ul->lock); in rt6_uncached_list_flush_dev()
173 list_for_each_entry(rt, &ul->head, rt6i_uncached) { in rt6_uncached_list_flush_dev()
174 struct inet6_dev *rt_idev = rt->rt6i_idev; in rt6_uncached_list_flush_dev()
175 struct net_device *rt_dev = rt->dst.dev; in rt6_uncached_list_flush_dev()
177 if (rt_idev && rt_idev->dev == dev) { in rt6_uncached_list_flush_dev()
178 rt->rt6i_idev = in6_dev_get(loopback_dev); in rt6_uncached_list_flush_dev()
183 rt->dst.dev = blackhole_netdev; in rt6_uncached_list_flush_dev()
184 dev_hold(rt->dst.dev); in rt6_uncached_list_flush_dev()
188 spin_unlock_bh(&ul->lock); in rt6_uncached_list_flush_dev()
199 return &ipv6_hdr(skb)->daddr; in choose_neigh_daddr()
226 dst->dev, skb, daddr); in ip6_dst_neigh_lookup()
231 struct net_device *dev = dst->dev; in ip6_confirm_neigh()
237 if (dev->flags & (IFF_NOARP | IFF_LOOPBACK)) in ip6_confirm_neigh()
276 [RTAX_HOPLIMIT - 1] = 0,
293 .error = -ENETUNREACH,
307 .error = -EACCES,
319 .error = -EINVAL,
330 struct dst_entry *dst = &rt->dst; in rt6_info_init()
332 memset(dst + 1, 0, sizeof(*rt) - sizeof(*dst)); in rt6_info_init()
333 INIT_LIST_HEAD(&rt->rt6i_uncached); in rt6_info_init()
340 struct rt6_info *rt = dst_alloc(&net->ipv6.ip6_dst_ops, dev, in ip6_dst_alloc()
345 atomic_inc(&net->ipv6.rt6_stats->fib_rt_alloc); in ip6_dst_alloc()
361 idev = rt->rt6i_idev; in ip6_dst_destroy()
363 rt->rt6i_idev = NULL; in ip6_dst_destroy()
367 from = xchg((__force struct fib6_info **)&rt->from, NULL); in ip6_dst_destroy()
375 struct inet6_dev *idev = rt->rt6i_idev; in ip6_dst_ifdown()
378 dev_net(dev)->loopback_dev; in ip6_dst_ifdown()
380 if (idev && idev->dev != loopback_dev) { in ip6_dst_ifdown()
383 rt->rt6i_idev = loopback_idev; in ip6_dst_ifdown()
387 from = unrcu_pointer(xchg(&rt->from, NULL)); in ip6_dst_ifdown()
393 if (rt->rt6i_flags & RTF_EXPIRES) in __rt6_check_expired()
394 return time_after(jiffies, rt->dst.expires); in __rt6_check_expired()
403 from = rcu_dereference(rt->from); in rt6_check_expired()
405 if (rt->rt6i_flags & RTF_EXPIRES) { in rt6_check_expired()
406 if (time_after(jiffies, rt->dst.expires)) in rt6_check_expired()
409 return rt->dst.obsolete != DST_OBSOLETE_FORCE_CHK || in rt6_check_expired()
419 struct fib6_info *match = res->f6i; in fib6_select_path()
422 if (!match->nh && (!match->fib6_nsiblings || have_oif_match)) in fib6_select_path()
425 if (match->nh && have_oif_match && res->nh) in fib6_select_path()
429 * case it will always be non-zero. Otherwise now is the time to do it. in fib6_select_path()
431 if (!fl6->mp_hash && in fib6_select_path()
432 (!match->nh || nexthop_is_multipath(match->nh))) in fib6_select_path()
433 fl6->mp_hash = rt6_multipath_hash(net, fl6, skb, NULL); in fib6_select_path()
435 if (unlikely(match->nh)) { in fib6_select_path()
436 nexthop_path_fib6_result(res, fl6->mp_hash); in fib6_select_path()
440 if (fl6->mp_hash <= atomic_read(&match->fib6_nh->fib_nh_upper_bound)) in fib6_select_path()
443 list_for_each_entry_rcu(sibling, &match->fib6_siblings, in fib6_select_path()
445 const struct fib6_nh *nh = sibling->fib6_nh; in fib6_select_path()
448 nh_upper_bound = atomic_read(&nh->fib_nh_upper_bound); in fib6_select_path()
449 if (fl6->mp_hash > nh_upper_bound) in fib6_select_path()
451 if (rt6_score_route(nh, sibling->fib6_flags, oif, strict) < 0) in fib6_select_path()
458 res->f6i = match; in fib6_select_path()
459 res->nh = match->fib6_nh; in fib6_select_path()
471 if (nh->fib_nh_flags & RTNH_F_DEAD) in __rt6_device_match()
474 dev = nh->fib_nh_dev; in __rt6_device_match()
476 if (dev->ifindex == oif) in __rt6_device_match()
499 arg->nh = nh; in __rt6_nh_dev_match()
500 return __rt6_device_match(arg->net, nh, arg->saddr, arg->oif, in __rt6_nh_dev_match()
501 arg->flags); in __rt6_nh_dev_match()
529 struct fib6_info *f6i = res->f6i; in rt6_device_match()
534 if (unlikely(f6i->nh)) { in rt6_device_match()
535 nh = nexthop_fib6_nh(f6i->nh); in rt6_device_match()
536 if (nexthop_is_blackhole(f6i->nh)) in rt6_device_match()
539 nh = f6i->fib6_nh; in rt6_device_match()
541 if (!(nh->fib_nh_flags & RTNH_F_DEAD)) in rt6_device_match()
545 for (spf6i = f6i; spf6i; spf6i = rcu_dereference(spf6i->fib6_next)) { in rt6_device_match()
548 if (unlikely(spf6i->nh)) { in rt6_device_match()
549 nh = rt6_nh_dev_match(net, spf6i->nh, res, saddr, in rt6_device_match()
554 nh = spf6i->fib6_nh; in rt6_device_match()
559 res->f6i = spf6i; in rt6_device_match()
565 res->f6i = net->ipv6.fib6_null_entry; in rt6_device_match()
566 nh = res->f6i->fib6_nh; in rt6_device_match()
570 if (unlikely(f6i->nh)) { in rt6_device_match()
571 nh = nexthop_fib6_nh(f6i->nh); in rt6_device_match()
572 if (nexthop_is_blackhole(f6i->nh)) in rt6_device_match()
575 nh = f6i->fib6_nh; in rt6_device_match()
578 if (nh->fib_nh_flags & RTNH_F_DEAD) { in rt6_device_match()
579 res->f6i = net->ipv6.fib6_null_entry; in rt6_device_match()
580 nh = res->f6i->fib6_nh; in rt6_device_match()
583 res->nh = nh; in rt6_device_match()
584 res->fib6_type = res->f6i->fib6_type; in rt6_device_match()
585 res->fib6_flags = res->f6i->fib6_flags; in rt6_device_match()
589 res->fib6_flags |= RTF_REJECT; in rt6_device_match()
590 res->fib6_type = RTN_BLACKHOLE; in rt6_device_match()
591 res->nh = nh; in rt6_device_match()
607 addrconf_addr_solict_mult(&work->target, &mcaddr); in rt6_probe_deferred()
608 ndisc_send_ns(work->dev, &work->target, &mcaddr, NULL, 0); in rt6_probe_deferred()
609 dev_put(work->dev); in rt6_probe_deferred()
627 * Router Reachability Probe MUST be rate-limited in rt6_probe()
630 if (!fib6_nh->fib_nh_gw_family) in rt6_probe()
633 nh_gw = &fib6_nh->fib_nh_gw6; in rt6_probe()
634 dev = fib6_nh->fib_nh_dev; in rt6_probe()
636 last_probe = READ_ONCE(fib6_nh->last_probe); in rt6_probe()
642 if (neigh->nud_state & NUD_VALID) in rt6_probe()
645 write_lock(&neigh->lock); in rt6_probe()
646 if (!(neigh->nud_state & NUD_VALID) && in rt6_probe()
648 neigh->updated + idev->cnf.rtr_probe_interval)) { in rt6_probe()
653 write_unlock(&neigh->lock); in rt6_probe()
655 idev->cnf.rtr_probe_interval)) { in rt6_probe()
659 if (!work || cmpxchg(&fib6_nh->last_probe, in rt6_probe()
663 INIT_WORK(&work->work, rt6_probe_deferred); in rt6_probe()
664 work->target = *nh_gw; in rt6_probe()
666 work->dev = dev; in rt6_probe()
667 schedule_work(&work->work); in rt6_probe()
688 neigh = __ipv6_neigh_lookup_noref(fib6_nh->fib_nh_dev, in rt6_check_neigh()
689 &fib6_nh->fib_nh_gw6); in rt6_check_neigh()
691 read_lock(&neigh->lock); in rt6_check_neigh()
692 if (neigh->nud_state & NUD_VALID) in rt6_check_neigh()
695 else if (!(neigh->nud_state & NUD_FAILED)) in rt6_check_neigh()
700 read_unlock(&neigh->lock); in rt6_check_neigh()
715 if (!oif || nh->fib_nh_dev->ifindex == oif) in rt6_score_route()
724 !(fib6_flags & RTF_NONEXTHOP) && nh->fib_nh_gw_family) { in rt6_score_route()
739 if (nh->fib_nh_flags & RTNH_F_DEAD) in find_match()
742 if (ip6_ignore_linkdown(nh->fib_nh_dev) && in find_match()
743 nh->fib_nh_flags & RTNH_F_LINKDOWN && in find_match()
781 arg->nh = nh; in rt6_nh_find_match()
782 return find_match(nh, arg->flags, arg->oif, arg->strict, in rt6_nh_find_match()
783 arg->mpri, arg->do_rr); in rt6_nh_find_match()
795 f6i = rcu_dereference(f6i->fib6_next)) { in __find_rr_leaf()
799 if (cont && f6i->fib6_metric != metric) { in __find_rr_leaf()
807 if (unlikely(f6i->nh)) { in __find_rr_leaf()
809 .flags = f6i->fib6_flags, in __find_rr_leaf()
816 if (nexthop_is_blackhole(f6i->nh)) { in __find_rr_leaf()
817 res->fib6_flags = RTF_REJECT; in __find_rr_leaf()
818 res->fib6_type = RTN_BLACKHOLE; in __find_rr_leaf()
819 res->f6i = f6i; in __find_rr_leaf()
820 res->nh = nexthop_fib6_nh(f6i->nh); in __find_rr_leaf()
823 if (nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_find_match, in __find_rr_leaf()
829 nh = f6i->fib6_nh; in __find_rr_leaf()
830 if (find_match(nh, f6i->fib6_flags, oif, strict, in __find_rr_leaf()
835 res->f6i = f6i; in __find_rr_leaf()
836 res->nh = nh; in __find_rr_leaf()
837 res->fib6_flags = f6i->fib6_flags; in __find_rr_leaf()
838 res->fib6_type = f6i->fib6_type; in __find_rr_leaf()
847 u32 metric = rr_head->fib6_metric; in find_rr_leaf()
849 int mpri = -1; in find_rr_leaf()
857 if (res->f6i || !cont) in find_rr_leaf()
867 struct fib6_info *leaf = rcu_dereference(fn->leaf); in rt6_select()
873 res->f6i = NULL; in rt6_select()
875 if (!leaf || leaf == net->ipv6.fib6_null_entry) in rt6_select()
878 rt0 = rcu_dereference(fn->rr_ptr); in rt6_select()
883 * and fn->leaf does not points to its child's leaf in rt6_select()
887 key_plen = rt0->fib6_dst.plen; in rt6_select()
889 if (rt0->fib6_src.plen) in rt6_select()
890 key_plen = rt0->fib6_src.plen; in rt6_select()
892 if (fn->fn_bit != key_plen) in rt6_select()
897 struct fib6_info *next = rcu_dereference(rt0->fib6_next); in rt6_select()
899 /* no entries matched; do round-robin */ in rt6_select()
900 if (!next || next->fib6_metric != rt0->fib6_metric) in rt6_select()
904 spin_lock_bh(&leaf->fib6_table->tb6_lock); in rt6_select()
906 if (next->fib6_node) in rt6_select()
907 rcu_assign_pointer(fn->rr_ptr, next); in rt6_select()
908 spin_unlock_bh(&leaf->fib6_table->tb6_lock); in rt6_select()
913 if (!res->f6i) { in rt6_select()
914 res->f6i = net->ipv6.fib6_null_entry; in rt6_select()
915 res->nh = res->f6i->fib6_nh; in rt6_select()
916 res->fib6_flags = res->f6i->fib6_flags; in rt6_select()
917 res->fib6_type = res->f6i->fib6_type; in rt6_select()
923 return (res->f6i->fib6_flags & RTF_NONEXTHOP) || in rt6_is_gw_or_nonexthop()
924 res->nh->fib_nh_gw_family; in rt6_is_gw_or_nonexthop()
939 return -EINVAL; in rt6_route_rcv()
943 if (rinfo->length > 3) { in rt6_route_rcv()
944 return -EINVAL; in rt6_route_rcv()
945 } else if (rinfo->prefix_len > 128) { in rt6_route_rcv()
946 return -EINVAL; in rt6_route_rcv()
947 } else if (rinfo->prefix_len > 64) { in rt6_route_rcv()
948 if (rinfo->length < 2) { in rt6_route_rcv()
949 return -EINVAL; in rt6_route_rcv()
951 } else if (rinfo->prefix_len > 0) { in rt6_route_rcv()
952 if (rinfo->length < 1) { in rt6_route_rcv()
953 return -EINVAL; in rt6_route_rcv()
957 pref = rinfo->route_pref; in rt6_route_rcv()
959 return -EINVAL; in rt6_route_rcv()
961 lifetime = addrconf_timeout_fixup(ntohl(rinfo->lifetime), HZ); in rt6_route_rcv()
963 if (rinfo->length == 3) in rt6_route_rcv()
964 prefix = (struct in6_addr *)rinfo->prefix; in rt6_route_rcv()
968 (struct in6_addr *)rinfo->prefix, in rt6_route_rcv()
969 rinfo->prefix_len); in rt6_route_rcv()
973 if (rinfo->prefix_len == 0) in rt6_route_rcv()
976 rt = rt6_get_route_info(net, prefix, rinfo->prefix_len, in rt6_route_rcv()
985 rt = rt6_add_route_info(net, prefix, rinfo->prefix_len, gwaddr, in rt6_route_rcv()
988 rt->fib6_flags = RTF_ROUTEINFO | in rt6_route_rcv()
989 (rt->fib6_flags & ~RTF_PREF_MASK) | RTF_PREF(pref); in rt6_route_rcv()
1010 struct net_device *dev = res->nh->fib_nh_dev; in ip6_rt_get_dev_rcu()
1012 if (res->fib6_flags & (RTF_LOCAL | RTF_ANYCAST)) { in ip6_rt_get_dev_rcu()
1013 /* for copies of local routes, dst->dev needs to be the in ip6_rt_get_dev_rcu()
1018 !rt6_need_strict(&res->f6i->fib6_dst.addr)) in ip6_rt_get_dev_rcu()
1021 dev = dev_net(dev)->loopback_dev; in ip6_rt_get_dev_rcu()
1037 [RTN_BLACKHOLE] = -EINVAL,
1038 [RTN_UNREACHABLE] = -EHOSTUNREACH,
1039 [RTN_PROHIBIT] = -EACCES,
1040 [RTN_THROW] = -EAGAIN,
1041 [RTN_NAT] = -EINVAL,
1042 [RTN_XRESOLVE] = -EINVAL,
1054 if (rt->dst_nocount) in fib6_info_dst_flags()
1056 if (rt->dst_nopolicy) in fib6_info_dst_flags()
1064 rt->dst.error = ip6_rt_type_to_error(fib6_type); in ip6_rt_init_dst_reject()
1068 rt->dst.output = dst_discard_out; in ip6_rt_init_dst_reject()
1069 rt->dst.input = dst_discard; in ip6_rt_init_dst_reject()
1072 rt->dst.output = ip6_pkt_prohibit_out; in ip6_rt_init_dst_reject()
1073 rt->dst.input = ip6_pkt_prohibit; in ip6_rt_init_dst_reject()
1078 rt->dst.output = ip6_pkt_discard_out; in ip6_rt_init_dst_reject()
1079 rt->dst.input = ip6_pkt_discard; in ip6_rt_init_dst_reject()
1086 struct fib6_info *f6i = res->f6i; in ip6_rt_init_dst()
1088 if (res->fib6_flags & RTF_REJECT) { in ip6_rt_init_dst()
1089 ip6_rt_init_dst_reject(rt, res->fib6_type); in ip6_rt_init_dst()
1093 rt->dst.error = 0; in ip6_rt_init_dst()
1094 rt->dst.output = ip6_output; in ip6_rt_init_dst()
1096 if (res->fib6_type == RTN_LOCAL || res->fib6_type == RTN_ANYCAST) { in ip6_rt_init_dst()
1097 rt->dst.input = ip6_input; in ip6_rt_init_dst()
1098 } else if (ipv6_addr_type(&f6i->fib6_dst.addr) & IPV6_ADDR_MULTICAST) { in ip6_rt_init_dst()
1099 rt->dst.input = ip6_mc_input; in ip6_rt_init_dst()
1101 rt->dst.input = ip6_forward; in ip6_rt_init_dst()
1104 if (res->nh->fib_nh_lws) { in ip6_rt_init_dst()
1105 rt->dst.lwtstate = lwtstate_get(res->nh->fib_nh_lws); in ip6_rt_init_dst()
1106 lwtunnel_set_redirect(&rt->dst); in ip6_rt_init_dst()
1109 rt->dst.lastuse = jiffies; in ip6_rt_init_dst()
1115 rt->rt6i_flags &= ~RTF_EXPIRES; in rt6_set_from()
1116 rcu_assign_pointer(rt->from, from); in rt6_set_from()
1117 ip_dst_init_metrics(&rt->dst, from->fib6_metrics); in rt6_set_from()
1123 const struct fib6_nh *nh = res->nh; in ip6_rt_copy_init()
1124 const struct net_device *dev = nh->fib_nh_dev; in ip6_rt_copy_init()
1125 struct fib6_info *f6i = res->f6i; in ip6_rt_copy_init()
1129 rt->rt6i_dst = f6i->fib6_dst; in ip6_rt_copy_init()
1130 rt->rt6i_idev = dev ? in6_dev_get(dev) : NULL; in ip6_rt_copy_init()
1131 rt->rt6i_flags = res->fib6_flags; in ip6_rt_copy_init()
1132 if (nh->fib_nh_gw_family) { in ip6_rt_copy_init()
1133 rt->rt6i_gateway = nh->fib_nh_gw6; in ip6_rt_copy_init()
1134 rt->rt6i_flags |= RTF_GATEWAY; in ip6_rt_copy_init()
1138 rt->rt6i_src = f6i->fib6_src; in ip6_rt_copy_init()
1147 if (fn->fn_flags & RTN_TL_ROOT) in fib6_backtrack()
1149 pn = rcu_dereference(fn->parent); in fib6_backtrack()
1155 if (fn->fn_flags & RTN_RTINFO) in fib6_backtrack()
1164 if (dst_hold_safe(&rt->dst)) in ip6_hold_safe()
1167 rt = net->ipv6.ip6_null_entry; in ip6_hold_safe()
1168 dst_hold(&rt->dst); in ip6_hold_safe()
1179 struct net_device *dev = res->nh->fib_nh_dev; in ip6_create_rt_rcu()
1180 struct fib6_info *f6i = res->f6i; in ip6_create_rt_rcu()
1198 nrt = dev_net(dev)->ipv6.ip6_null_entry; in ip6_create_rt_rcu()
1199 dst_hold(&nrt->dst); in ip6_create_rt_rcu()
1213 if (fl6->flowi6_flags & FLOWI_FLAG_SKIP_NH_OIF) in ip6_pol_route_lookup()
1217 fn = fib6_node_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr); in ip6_pol_route_lookup()
1219 res.f6i = rcu_dereference(fn->leaf); in ip6_pol_route_lookup()
1221 res.f6i = net->ipv6.fib6_null_entry; in ip6_pol_route_lookup()
1223 rt6_device_match(net, &res, &fl6->saddr, fl6->flowi6_oif, in ip6_pol_route_lookup()
1226 if (res.f6i == net->ipv6.fib6_null_entry) { in ip6_pol_route_lookup()
1227 fn = fib6_backtrack(fn, &fl6->saddr); in ip6_pol_route_lookup()
1231 rt = net->ipv6.ip6_null_entry; in ip6_pol_route_lookup()
1232 dst_hold(&rt->dst); in ip6_pol_route_lookup()
1238 fib6_select_path(net, &res, fl6, fl6->flowi6_oif, in ip6_pol_route_lookup()
1239 fl6->flowi6_oif != 0, skb, flags); in ip6_pol_route_lookup()
1242 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route_lookup()
1245 dst_use_noref(&rt->dst, jiffies); in ip6_pol_route_lookup()
1283 if (dst->error == 0) in rt6_lookup()
1292 /* ip6_ins_rt is called with FREE table->tb6_lock.
1304 table = rt->fib6_table; in __ip6_ins_rt()
1305 spin_lock_bh(&table->tb6_lock); in __ip6_ins_rt()
1306 err = fib6_add(&table->tb6_root, rt, info, extack); in __ip6_ins_rt()
1307 spin_unlock_bh(&table->tb6_lock); in __ip6_ins_rt()
1323 struct fib6_info *f6i = res->f6i; in ip6_rt_cache_alloc()
1342 rt->rt6i_flags |= RTF_CACHE; in ip6_rt_cache_alloc()
1343 rt->rt6i_dst.addr = *daddr; in ip6_rt_cache_alloc()
1344 rt->rt6i_dst.plen = 128; in ip6_rt_cache_alloc()
1347 if (f6i->fib6_dst.plen != 128 && in ip6_rt_cache_alloc()
1348 ipv6_addr_equal(&f6i->fib6_dst.addr, daddr)) in ip6_rt_cache_alloc()
1349 rt->rt6i_flags |= RTF_ANYCAST; in ip6_rt_cache_alloc()
1351 if (rt->rt6i_src.plen && saddr) { in ip6_rt_cache_alloc()
1352 rt->rt6i_src.addr = *saddr; in ip6_rt_cache_alloc()
1353 rt->rt6i_src.plen = 128; in ip6_rt_cache_alloc()
1363 struct fib6_info *f6i = res->f6i; in ip6_rt_pcpu_alloc()
1380 pcpu_rt->rt6i_flags |= RTF_PCPU; in ip6_rt_pcpu_alloc()
1382 if (f6i->nh) in ip6_rt_pcpu_alloc()
1383 pcpu_rt->sernum = rt_genid_ipv6(dev_net(dev)); in ip6_rt_pcpu_alloc()
1390 return rt6->sernum == rt_genid_ipv6(dev_net(rt6->dst.dev)); in rt6_is_valid()
1398 pcpu_rt = this_cpu_read(*res->nh->rt6i_pcpu); in rt6_get_pcpu_route()
1400 if (pcpu_rt && pcpu_rt->sernum && !rt6_is_valid(pcpu_rt)) { in rt6_get_pcpu_route()
1403 p = this_cpu_ptr(res->nh->rt6i_pcpu); in rt6_get_pcpu_route()
1407 dst_dev_put(&prev->dst); in rt6_get_pcpu_route()
1408 dst_release(&prev->dst); in rt6_get_pcpu_route()
1426 p = this_cpu_ptr(res->nh->rt6i_pcpu); in rt6_make_pcpu_route()
1430 if (res->f6i->fib6_destroying) { in rt6_make_pcpu_route()
1433 from = xchg((__force struct fib6_info **)&pcpu_rt->from, NULL); in rt6_make_pcpu_route()
1455 net = dev_net(rt6_ex->rt6i->dst.dev); in rt6_remove_exception()
1456 net->ipv6.rt6_stats->fib_rt_cache--; in rt6_remove_exception()
1461 dst_dev_put(&rt6_ex->rt6i->dst); in rt6_remove_exception()
1463 hlist_del_rcu(&rt6_ex->hlist); in rt6_remove_exception()
1464 dst_release(&rt6_ex->rt6i->dst); in rt6_remove_exception()
1466 WARN_ON_ONCE(!bucket->depth); in rt6_remove_exception()
1467 bucket->depth--; in rt6_remove_exception()
1480 hlist_for_each_entry(rt6_ex, &bucket->chain, hlist) { in rt6_exception_remove_oldest()
1481 if (!oldest || time_before(rt6_ex->stamp, oldest->stamp)) in rt6_exception_remove_oldest()
1529 hlist_for_each_entry(rt6_ex, &(*bucket)->chain, hlist) { in __rt6_find_exception_spinlock()
1530 struct rt6_info *rt6 = rt6_ex->rt6i; in __rt6_find_exception_spinlock()
1531 bool matched = ipv6_addr_equal(daddr, &rt6->rt6i_dst.addr); in __rt6_find_exception_spinlock()
1535 matched = ipv6_addr_equal(saddr, &rt6->rt6i_src.addr); in __rt6_find_exception_spinlock()
1564 hlist_for_each_entry_rcu(rt6_ex, &(*bucket)->chain, hlist) { in __rt6_find_exception_rcu()
1565 struct rt6_info *rt6 = rt6_ex->rt6i; in __rt6_find_exception_rcu()
1566 bool matched = ipv6_addr_equal(daddr, &rt6->rt6i_dst.addr); in __rt6_find_exception_rcu()
1570 matched = ipv6_addr_equal(saddr, &rt6->rt6i_src.addr); in __rt6_find_exception_rcu()
1580 const struct fib6_nh *nh = res->nh; in fib6_mtu()
1583 if (res->f6i->fib6_pmtu) { in fib6_mtu()
1584 mtu = res->f6i->fib6_pmtu; in fib6_mtu()
1586 struct net_device *dev = nh->fib_nh_dev; in fib6_mtu()
1591 mtu = idev->cnf.mtu6; in fib6_mtu()
1597 return mtu - lwtunnel_headroom(nh->fib_nh_lws, mtu); in fib6_mtu()
1614 bucket = rcu_dereference_protected(nh->rt6i_exception_bucket, in fib6_nh_get_excptn_bucket()
1617 bucket = rcu_dereference(nh->rt6i_exception_bucket); in fib6_nh_get_excptn_bucket()
1644 bucket = rcu_dereference_protected(nh->rt6i_exception_bucket, in fib6_nh_excptn_bucket_set_flushed()
1650 rcu_assign_pointer(nh->rt6i_exception_bucket, bucket); in fib6_nh_excptn_bucket_set_flushed()
1656 struct net *net = dev_net(nrt->dst.dev); in rt6_insert_exception()
1658 struct fib6_info *f6i = res->f6i; in rt6_insert_exception()
1661 struct fib6_nh *nh = res->nh; in rt6_insert_exception()
1667 bucket = rcu_dereference_protected(nh->rt6i_exception_bucket, in rt6_insert_exception()
1673 err = -ENOMEM; in rt6_insert_exception()
1676 rcu_assign_pointer(nh->rt6i_exception_bucket, bucket); in rt6_insert_exception()
1678 err = -EINVAL; in rt6_insert_exception()
1689 if (f6i->fib6_src.plen) in rt6_insert_exception()
1690 src_key = &nrt->rt6i_src.addr; in rt6_insert_exception()
1696 if (dst_metric_raw(&nrt->dst, RTAX_MTU) >= fib6_mtu(res)) { in rt6_insert_exception()
1697 err = -EINVAL; in rt6_insert_exception()
1701 rt6_ex = __rt6_find_exception_spinlock(&bucket, &nrt->rt6i_dst.addr, in rt6_insert_exception()
1708 err = -ENOMEM; in rt6_insert_exception()
1711 rt6_ex->rt6i = nrt; in rt6_insert_exception()
1712 rt6_ex->stamp = jiffies; in rt6_insert_exception()
1713 hlist_add_head_rcu(&rt6_ex->hlist, &bucket->chain); in rt6_insert_exception()
1714 bucket->depth++; in rt6_insert_exception()
1715 net->ipv6.rt6_stats->fib_rt_cache++; in rt6_insert_exception()
1719 while (bucket->depth > max_depth) in rt6_insert_exception()
1725 /* Update fn->fn_sernum to invalidate all cached dst */ in rt6_insert_exception()
1727 spin_lock_bh(&f6i->fib6_table->tb6_lock); in rt6_insert_exception()
1729 spin_unlock_bh(&f6i->fib6_table->tb6_lock); in rt6_insert_exception()
1754 hlist_for_each_entry_safe(rt6_ex, tmp, &bucket->chain, hlist) { in fib6_nh_flush_exceptions()
1756 rcu_access_pointer(rt6_ex->rt6i->from) == from) in fib6_nh_flush_exceptions()
1759 WARN_ON_ONCE(!from && bucket->depth); in fib6_nh_flush_exceptions()
1777 if (f6i->nh) in rt6_flush_exceptions()
1778 nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_flush_exceptions, in rt6_flush_exceptions()
1781 fib6_nh_flush_exceptions(f6i->fib6_nh, f6i); in rt6_flush_exceptions()
1803 * So we need to use f6i->fib6_src to redo lookup in rt6_find_cached_rt()
1806 * rt->rt6i_src is updated.) in rt6_find_cached_rt()
1808 if (res->f6i->fib6_src.plen) in rt6_find_cached_rt()
1812 bucket = fib6_nh_get_excptn_bucket(res->nh, NULL); in rt6_find_cached_rt()
1815 if (rt6_ex && !rt6_check_expired(rt6_ex->rt6i)) in rt6_find_cached_rt()
1816 ret = rt6_ex->rt6i; in rt6_find_cached_rt()
1819 /* Use fib6_src as src_key and redo lookup */ in rt6_find_cached_rt()
1820 if (!ret && src_key && src_key != &res->f6i->fib6_src.addr) { in rt6_find_cached_rt()
1821 src_key = &res->f6i->fib6_src.addr; in rt6_find_cached_rt()
1838 if (!rcu_access_pointer(nh->rt6i_exception_bucket)) in fib6_nh_remove_exception()
1839 return -ENOENT; in fib6_nh_remove_exception()
1852 src_key = &rt->rt6i_src.addr; in fib6_nh_remove_exception()
1855 &rt->rt6i_dst.addr, in fib6_nh_remove_exception()
1861 err = -ENOENT; in fib6_nh_remove_exception()
1878 err = fib6_nh_remove_exception(nh, arg->plen, arg->rt); in rt6_nh_remove_exception_rt()
1889 from = rcu_dereference(rt->from); in rt6_remove_exception_rt()
1890 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_remove_exception_rt()
1891 return -EINVAL; in rt6_remove_exception_rt()
1893 if (from->nh) { in rt6_remove_exception_rt()
1896 .plen = from->fib6_src.plen in rt6_remove_exception_rt()
1901 rc = nexthop_for_each_fib6_nh(from->nh, in rt6_remove_exception_rt()
1904 return rc ? 0 : -ENOENT; in rt6_remove_exception_rt()
1907 return fib6_nh_remove_exception(from->fib6_nh, in rt6_remove_exception_rt()
1908 from->fib6_src.plen, rt); in rt6_remove_exception_rt()
1930 src_key = &rt->rt6i_src.addr; in fib6_nh_update_exception()
1932 rt6_ex = __rt6_find_exception_rcu(&bucket, &rt->rt6i_dst.addr, src_key); in fib6_nh_update_exception()
1934 rt6_ex->stamp = jiffies; in fib6_nh_update_exception()
1948 if (arg->dev != nh->fib_nh_dev || in fib6_nh_find_match()
1949 (arg->gw && !nh->fib_nh_gw_family) || in fib6_nh_find_match()
1950 (!arg->gw && nh->fib_nh_gw_family) || in fib6_nh_find_match()
1951 (arg->gw && !ipv6_addr_equal(arg->gw, &nh->fib_nh_gw6))) in fib6_nh_find_match()
1954 arg->match = nh; in fib6_nh_find_match()
1967 from = rcu_dereference(rt->from); in rt6_update_exception_stamp_rt()
1968 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_update_exception_stamp_rt()
1971 if (from->nh) { in rt6_update_exception_stamp_rt()
1973 .dev = rt->dst.dev, in rt6_update_exception_stamp_rt()
1974 .gw = &rt->rt6i_gateway, in rt6_update_exception_stamp_rt()
1977 nexthop_for_each_fib6_nh(from->nh, fib6_nh_find_match, &arg); in rt6_update_exception_stamp_rt()
1983 fib6_nh = from->fib6_nh; in rt6_update_exception_stamp_rt()
1985 fib6_nh_update_exception(fib6_nh, from->fib6_src.plen, rt); in rt6_update_exception_stamp_rt()
2003 if (dst_mtu(&rt->dst) >= mtu) in rt6_mtu_change_route_allowed()
2006 if (dst_mtu(&rt->dst) == idev->cnf.mtu6) in rt6_mtu_change_route_allowed()
2024 hlist_for_each_entry(rt6_ex, &bucket->chain, hlist) { in rt6_exceptions_update_pmtu()
2025 struct rt6_info *entry = rt6_ex->rt6i; in rt6_exceptions_update_pmtu()
2028 * route), the metrics of its rt->from have already in rt6_exceptions_update_pmtu()
2031 if (dst_metric_raw(&entry->dst, RTAX_MTU) && in rt6_exceptions_update_pmtu()
2033 dst_metric_set(&entry->dst, RTAX_MTU, mtu); in rt6_exceptions_update_pmtu()
2049 if (!rcu_access_pointer(nh->rt6i_exception_bucket)) in fib6_nh_exceptions_clean_tohost()
2057 &bucket->chain, hlist) { in fib6_nh_exceptions_clean_tohost()
2058 struct rt6_info *entry = rt6_ex->rt6i; in fib6_nh_exceptions_clean_tohost()
2060 if ((entry->rt6i_flags & RTF_CACHE_GATEWAY) == in fib6_nh_exceptions_clean_tohost()
2063 &entry->rt6i_gateway)) { in fib6_nh_exceptions_clean_tohost()
2079 struct rt6_info *rt = rt6_ex->rt6i; in rt6_age_examine_exception()
2081 /* we are pruning and obsoleting aged-out and non gateway exceptions in rt6_age_examine_exception()
2084 * EXPIRES exceptions - e.g. pmtu-generated ones are pruned when in rt6_age_examine_exception()
2087 if (!(rt->rt6i_flags & RTF_EXPIRES)) { in rt6_age_examine_exception()
2088 if (time_after_eq(now, rt->dst.lastuse + gc_args->timeout)) { in rt6_age_examine_exception()
2093 } else if (time_after(jiffies, rt->dst.expires)) { in rt6_age_examine_exception()
2099 if (rt->rt6i_flags & RTF_GATEWAY) { in rt6_age_examine_exception()
2103 neigh = __ipv6_neigh_lookup_noref(rt->dst.dev, &rt->rt6i_gateway); in rt6_age_examine_exception()
2105 neigh_flags = neigh->flags; in rt6_age_examine_exception()
2108 RT6_TRACE("purging route %p via non-router but gateway\n", in rt6_age_examine_exception()
2115 gc_args->more++; in rt6_age_examine_exception()
2127 if (!rcu_access_pointer(nh->rt6i_exception_bucket)) in fib6_nh_age_exceptions()
2136 &bucket->chain, hlist) { in fib6_nh_age_exceptions()
2156 fib6_nh_age_exceptions(nh, arg->gc_args, arg->now); in rt6_nh_age_exceptions()
2164 if (f6i->nh) { in rt6_age_exceptions()
2170 nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_age_exceptions, in rt6_age_exceptions()
2173 fib6_nh_age_exceptions(f6i->fib6_nh, gc_args, now); in rt6_age_exceptions()
2183 fn = fib6_node_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr); in fib6_table_lookup()
2186 if (fl6->flowi6_flags & FLOWI_FLAG_SKIP_NH_OIF) in fib6_table_lookup()
2191 if (res->f6i == net->ipv6.fib6_null_entry) { in fib6_table_lookup()
2192 fn = fib6_backtrack(fn, &fl6->saddr); in fib6_table_lookup()
2221 if (net->ipv6.devconf_all->forwarding == 0) in ip6_pol_route()
2227 if (res.f6i == net->ipv6.fib6_null_entry) in ip6_pol_route()
2233 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route()
2236 } else if (unlikely((fl6->flowi6_flags & FLOWI_FLAG_KNOWN_NH) && in ip6_pol_route()
2237 !res.nh->fib_nh_gw_family)) { in ip6_pol_route()
2240 * the daddr in the skb during the neighbor look-up is different in ip6_pol_route()
2241 * from the fl6->daddr used to look-up route here. in ip6_pol_route()
2243 rt = ip6_rt_cache_alloc(&res, &fl6->daddr, NULL); in ip6_pol_route()
2252 atomic_inc(&net->ipv6.rt6_stats->fib_rt_uncache); in ip6_pol_route()
2269 rt = net->ipv6.ip6_null_entry; in ip6_pol_route()
2284 return ip6_pol_route(net, table, fl6->flowi6_iif, fl6, skb, flags); in ip6_pol_route_input()
2293 if (rt6_need_strict(&fl6->daddr) && dev->type != ARPHRD_PIMREG) in ip6_route_input_lookup()
2312 if (likely(outer_iph->nexthdr != IPPROTO_ICMPV6)) in ip6_multipath_l3_keys()
2320 if (!icmpv6_is_err(icmph->icmp6_type)) in ip6_multipath_l3_keys()
2333 keys->addrs.v6addrs.src = _flkeys->addrs.v6addrs.src; in ip6_multipath_l3_keys()
2334 keys->addrs.v6addrs.dst = _flkeys->addrs.v6addrs.dst; in ip6_multipath_l3_keys()
2335 keys->tags.flow_label = _flkeys->tags.flow_label; in ip6_multipath_l3_keys()
2336 keys->basic.ip_proto = _flkeys->basic.ip_proto; in ip6_multipath_l3_keys()
2338 keys->addrs.v6addrs.src = key_iph->saddr; in ip6_multipath_l3_keys()
2339 keys->addrs.v6addrs.dst = key_iph->daddr; in ip6_multipath_l3_keys()
2340 keys->tags.flow_label = ip6_flowlabel(key_iph); in ip6_multipath_l3_keys()
2341 keys->basic.ip_proto = key_iph->nexthdr; in ip6_multipath_l3_keys()
2359 hash_keys.addrs.v6addrs.src = fl6->saddr; in rt6_multipath_hash()
2360 hash_keys.addrs.v6addrs.dst = fl6->daddr; in rt6_multipath_hash()
2362 hash_keys.basic.ip_proto = fl6->flowi6_proto; in rt6_multipath_hash()
2370 /* short-circuit if we already have L4 hash present */ in rt6_multipath_hash()
2371 if (skb->l4_hash) in rt6_multipath_hash()
2381 hash_keys.addrs.v6addrs.src = flkeys->addrs.v6addrs.src; in rt6_multipath_hash()
2382 hash_keys.addrs.v6addrs.dst = flkeys->addrs.v6addrs.dst; in rt6_multipath_hash()
2383 hash_keys.ports.src = flkeys->ports.src; in rt6_multipath_hash()
2384 hash_keys.ports.dst = flkeys->ports.dst; in rt6_multipath_hash()
2385 hash_keys.basic.ip_proto = flkeys->basic.ip_proto; in rt6_multipath_hash()
2389 hash_keys.addrs.v6addrs.src = fl6->saddr; in rt6_multipath_hash()
2390 hash_keys.addrs.v6addrs.dst = fl6->daddr; in rt6_multipath_hash()
2391 hash_keys.ports.src = fl6->fl6_sport; in rt6_multipath_hash()
2392 hash_keys.ports.dst = fl6->fl6_dport; in rt6_multipath_hash()
2393 hash_keys.basic.ip_proto = fl6->flowi6_proto; in rt6_multipath_hash()
2408 if (flkeys->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { in rt6_multipath_hash()
2410 hash_keys.addrs.v4addrs.src = flkeys->addrs.v4addrs.src; in rt6_multipath_hash()
2411 hash_keys.addrs.v4addrs.dst = flkeys->addrs.v4addrs.dst; in rt6_multipath_hash()
2412 } else if (flkeys->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { in rt6_multipath_hash()
2414 hash_keys.addrs.v6addrs.src = flkeys->addrs.v6addrs.src; in rt6_multipath_hash()
2415 hash_keys.addrs.v6addrs.dst = flkeys->addrs.v6addrs.dst; in rt6_multipath_hash()
2416 hash_keys.tags.flow_label = flkeys->tags.flow_label; in rt6_multipath_hash()
2417 hash_keys.basic.ip_proto = flkeys->basic.ip_proto; in rt6_multipath_hash()
2426 hash_keys.addrs.v6addrs.src = fl6->saddr; in rt6_multipath_hash()
2427 hash_keys.addrs.v6addrs.dst = fl6->daddr; in rt6_multipath_hash()
2429 hash_keys.basic.ip_proto = fl6->flowi6_proto; in rt6_multipath_hash()
2442 struct net *net = dev_net(skb->dev); in ip6_route_input()
2446 .flowi6_iif = skb->dev->ifindex, in ip6_route_input()
2447 .daddr = iph->daddr, in ip6_route_input()
2448 .saddr = iph->saddr, in ip6_route_input()
2450 .flowi6_mark = skb->mark, in ip6_route_input()
2451 .flowi6_proto = iph->nexthdr, in ip6_route_input()
2456 if (tun_info && !(tun_info->mode & IP_TUNNEL_INFO_TX)) in ip6_route_input()
2457 fl6.flowi6_tun_key.tun_id = tun_info->key.tun_id; in ip6_route_input()
2465 skb_dst_set_noref(skb, ip6_route_input_lookup(net, skb->dev, in ip6_route_input()
2475 return ip6_pol_route(net, table, fl6->flowi6_oif, fl6, skb, flags); in ip6_pol_route_output()
2484 if (ipv6_addr_type(&fl6->daddr) & in ip6_route_output_flags_noref()
2494 fl6->flowi6_iif = LOOPBACK_IFINDEX; in ip6_route_output_flags_noref()
2497 any_src = ipv6_addr_any(&fl6->saddr); in ip6_route_output_flags_noref()
2498 if ((sk && sk->sk_bound_dev_if) || rt6_need_strict(&fl6->daddr) || in ip6_route_output_flags_noref()
2499 (fl6->flowi6_oif && any_src)) in ip6_route_output_flags_noref()
2505 flags |= rt6_srcprefs2flags(inet6_sk(sk)->srcprefs); in ip6_route_output_flags_noref()
2523 if (list_empty(&rt6->rt6i_uncached) && !dst_hold_safe(dst)) { in ip6_route_output_flags()
2524 dst = &net->ipv6.ip6_null_entry->dst; in ip6_route_output_flags()
2536 struct net_device *loopback_dev = net->loopback_dev; in ip6_blackhole_route()
2543 atomic_inc(&net->ipv6.rt6_stats->fib_rt_alloc); in ip6_blackhole_route()
2545 new = &rt->dst; in ip6_blackhole_route()
2546 new->__use = 1; in ip6_blackhole_route()
2547 new->input = dst_discard; in ip6_blackhole_route()
2548 new->output = dst_discard_out; in ip6_blackhole_route()
2550 dst_copy_metrics(new, &ort->dst); in ip6_blackhole_route()
2552 rt->rt6i_idev = in6_dev_get(loopback_dev); in ip6_blackhole_route()
2553 rt->rt6i_gateway = ort->rt6i_gateway; in ip6_blackhole_route()
2554 rt->rt6i_flags = ort->rt6i_flags & ~RTF_PCPU; in ip6_blackhole_route()
2556 memcpy(&rt->rt6i_dst, &ort->rt6i_dst, sizeof(struct rt6key)); in ip6_blackhole_route()
2558 memcpy(&rt->rt6i_src, &ort->rt6i_src, sizeof(struct rt6key)); in ip6_blackhole_route()
2563 return new ? new : ERR_PTR(-ENOMEM); in ip6_blackhole_route()
2596 return &rt->dst; in rt6_check()
2604 rt->dst.obsolete == DST_OBSOLETE_FORCE_CHK && in rt6_dst_from_check()
2606 return &rt->dst; in rt6_dst_from_check()
2619 if (rt->sernum) in ip6_dst_check()
2624 /* All IPV6 dsts are created with ->obsolete set to the value in ip6_dst_check()
2629 from = rcu_dereference(rt->from); in ip6_dst_check()
2631 if (from && (rt->rt6i_flags & RTF_PCPU || in ip6_dst_check()
2632 unlikely(!list_empty(&rt->rt6i_uncached)))) in ip6_dst_check()
2647 if (rt->rt6i_flags & RTF_CACHE) { in ip6_negative_advice()
2671 if (rt->rt6i_flags & RTF_CACHE) { in ip6_link_failure()
2677 from = rcu_dereference(rt->from); in ip6_link_failure()
2679 fn = rcu_dereference(from->fib6_node); in ip6_link_failure()
2680 if (fn && (rt->rt6i_flags & RTF_DEFAULT)) in ip6_link_failure()
2681 WRITE_ONCE(fn->fn_sernum, -1); in ip6_link_failure()
2690 if (!(rt0->rt6i_flags & RTF_EXPIRES)) { in rt6_update_expires()
2694 from = rcu_dereference(rt0->from); in rt6_update_expires()
2696 rt0->dst.expires = from->expires; in rt6_update_expires()
2700 dst_set_expires(&rt0->dst, timeout); in rt6_update_expires()
2701 rt0->rt6i_flags |= RTF_EXPIRES; in rt6_update_expires()
2706 struct net *net = dev_net(rt->dst.dev); in rt6_do_update_pmtu()
2708 dst_metric_set(&rt->dst, RTAX_MTU, mtu); in rt6_do_update_pmtu()
2709 rt->rt6i_flags |= RTF_MODIFIED; in rt6_do_update_pmtu()
2710 rt6_update_expires(rt, net->ipv6.sysctl.ip6_rt_mtu_expires); in rt6_do_update_pmtu()
2715 return !(rt->rt6i_flags & RTF_CACHE) && in rt6_cache_allowed_for_pmtu()
2716 (rt->rt6i_flags & RTF_PCPU || rcu_access_pointer(rt->from)); in rt6_cache_allowed_for_pmtu()
2732 daddr = &iph->daddr; in __ip6_rt_update_pmtu()
2733 saddr = &iph->saddr; in __ip6_rt_update_pmtu()
2735 daddr = &sk->sk_v6_daddr; in __ip6_rt_update_pmtu()
2736 saddr = &inet6_sk(sk)->saddr; in __ip6_rt_update_pmtu()
2752 /* update rt6_ex->stamp for cache */ in __ip6_rt_update_pmtu()
2753 if (rt6->rt6i_flags & RTF_CACHE) in __ip6_rt_update_pmtu()
2760 res.f6i = rcu_dereference(rt6->from); in __ip6_rt_update_pmtu()
2764 res.fib6_flags = res.f6i->fib6_flags; in __ip6_rt_update_pmtu()
2765 res.fib6_type = res.f6i->fib6_type; in __ip6_rt_update_pmtu()
2767 if (res.f6i->nh) { in __ip6_rt_update_pmtu()
2769 .dev = dst->dev, in __ip6_rt_update_pmtu()
2770 .gw = &rt6->rt6i_gateway, in __ip6_rt_update_pmtu()
2773 nexthop_for_each_fib6_nh(res.f6i->nh, in __ip6_rt_update_pmtu()
2777 * using the dst->dev + gw. Should be impossible. in __ip6_rt_update_pmtu()
2784 res.nh = res.f6i->fib6_nh; in __ip6_rt_update_pmtu()
2791 dst_release_immediate(&nrt6->dst); in __ip6_rt_update_pmtu()
2809 const struct ipv6hdr *iph = (struct ipv6hdr *) skb->data; in ip6_update_pmtu()
2813 .flowi6_mark = mark ? mark : IP6_REPLY_MARK(net, skb->mark), in ip6_update_pmtu()
2814 .daddr = iph->daddr, in ip6_update_pmtu()
2815 .saddr = iph->saddr, in ip6_update_pmtu()
2821 if (!dst->error) in ip6_update_pmtu()
2829 int oif = sk->sk_bound_dev_if; in ip6_sk_update_pmtu()
2832 if (!oif && skb->dev) in ip6_sk_update_pmtu()
2833 oif = l3mdev_master_ifindex(skb->dev); in ip6_sk_update_pmtu()
2835 ip6_update_pmtu(skb, sock_net(sk), mtu, oif, sk->sk_mark, sk->sk_uid); in ip6_sk_update_pmtu()
2838 if (!dst || !dst->obsolete || in ip6_sk_update_pmtu()
2839 dst->ops->check(dst, inet6_sk(sk)->dst_cookie)) in ip6_sk_update_pmtu()
2843 if (!sock_owned_by_user(sk) && !ipv6_addr_v4mapped(&sk->sk_v6_daddr)) in ip6_sk_update_pmtu()
2857 ipv6_addr_equal(&fl6->daddr, &sk->sk_v6_daddr) ? in ip6_sk_dst_store_flow()
2858 &sk->sk_v6_daddr : NULL, in ip6_sk_dst_store_flow()
2860 ipv6_addr_equal(&fl6->saddr, &np->saddr) ? in ip6_sk_dst_store_flow()
2861 &np->saddr : in ip6_sk_dst_store_flow()
2871 const struct fib6_nh *nh = res->nh; in ip6_redirect_nh_match()
2873 if (nh->fib_nh_flags & RTNH_F_DEAD || !nh->fib_nh_gw_family || in ip6_redirect_nh_match()
2874 fl6->flowi6_oif != nh->fib_nh_dev->ifindex) in ip6_redirect_nh_match()
2882 if (!ipv6_addr_equal(gw, &nh->fib_nh_gw6)) { in ip6_redirect_nh_match()
2885 rt_cache = rt6_find_cached_rt(res, &fl6->daddr, &fl6->saddr); in ip6_redirect_nh_match()
2887 ipv6_addr_equal(gw, &rt_cache->rt6i_gateway)) { in ip6_redirect_nh_match()
2907 arg->res->nh = nh; in fib6_nh_redirect_match()
2908 return ip6_redirect_nh_match(arg->res, arg->fl6, arg->gw, arg->ret); in fib6_nh_redirect_match()
2929 .gw = &rdfl->gateway, in __ip6_route_redirect()
2938 if (fl6->flowi6_flags & FLOWI_FLAG_SKIP_NH_OIF) in __ip6_route_redirect()
2939 fl6->flowi6_oif = skb->dev->ifindex; in __ip6_route_redirect()
2952 fn = fib6_node_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr); in __ip6_route_redirect()
2958 if (rt->fib6_flags & RTF_REJECT) in __ip6_route_redirect()
2960 if (unlikely(rt->nh)) { in __ip6_route_redirect()
2961 if (nexthop_is_blackhole(rt->nh)) in __ip6_route_redirect()
2963 /* on match, res->nh is filled in and potentially ret */ in __ip6_route_redirect()
2964 if (nexthop_for_each_fib6_nh(rt->nh, in __ip6_route_redirect()
2969 res.nh = rt->fib6_nh; in __ip6_route_redirect()
2970 if (ip6_redirect_nh_match(&res, fl6, &rdfl->gateway, in __ip6_route_redirect()
2977 rt = net->ipv6.fib6_null_entry; in __ip6_route_redirect()
2978 else if (rt->fib6_flags & RTF_REJECT) { in __ip6_route_redirect()
2979 ret = net->ipv6.ip6_null_entry; in __ip6_route_redirect()
2983 if (rt == net->ipv6.fib6_null_entry) { in __ip6_route_redirect()
2984 fn = fib6_backtrack(fn, &fl6->saddr); in __ip6_route_redirect()
2990 res.nh = rt->fib6_nh; in __ip6_route_redirect()
2995 res.fib6_flags = res.f6i->fib6_flags; in __ip6_route_redirect()
2996 res.fib6_type = res.f6i->fib6_type; in __ip6_route_redirect()
3024 const struct ipv6hdr *iph = (struct ipv6hdr *) skb->data; in ip6_redirect()
3030 .daddr = iph->daddr, in ip6_redirect()
3031 .saddr = iph->saddr, in ip6_redirect()
3036 dst = ip6_route_redirect(net, &fl6, skb, &ipv6_hdr(skb)->saddr); in ip6_redirect()
3050 .daddr = msg->dest, in ip6_redirect_no_header()
3051 .saddr = iph->daddr, in ip6_redirect_no_header()
3055 dst = ip6_route_redirect(net, &fl6, skb, &iph->saddr); in ip6_redirect_no_header()
3062 ip6_redirect(skb, sock_net(sk), sk->sk_bound_dev_if, sk->sk_mark, in ip6_sk_redirect()
3063 sk->sk_uid); in ip6_sk_redirect()
3069 struct net_device *dev = dst->dev; in ip6_default_advmss()
3073 mtu -= sizeof(struct ipv6hdr) + sizeof(struct tcphdr); in ip6_default_advmss()
3078 if (mtu < net->ipv6.sysctl.ip6_rt_min_advmss) in ip6_default_advmss()
3079 mtu = net->ipv6.sysctl.ip6_rt_min_advmss; in ip6_default_advmss()
3084 * Maximal non-jumbo IPv6 payload is IPV6_MAXPLEN and in ip6_default_advmss()
3085 * corresponding MSS is IPV6_MAXPLEN - tcp_header_size. in ip6_default_advmss()
3089 if (mtu > IPV6_MAXPLEN - sizeof(struct tcphdr)) in ip6_default_advmss()
3106 idev = __in6_dev_get(dst->dev); in ip6_mtu()
3108 mtu = idev->cnf.mtu6; in ip6_mtu()
3114 return mtu - lwtunnel_headroom(dst->lwtstate, mtu); in ip6_mtu()
3118 * 1. mtu on route is locked - use it
3129 const struct fib6_nh *nh = res->nh; in ip6_mtu_from_fib6()
3130 struct fib6_info *f6i = res->f6i; in ip6_mtu_from_fib6()
3136 mtu = f6i->fib6_pmtu; in ip6_mtu_from_fib6()
3143 mtu = dst_metric_raw(&rt->dst, RTAX_MTU); in ip6_mtu_from_fib6()
3145 struct net_device *dev = nh->fib_nh_dev; in ip6_mtu_from_fib6()
3149 if (idev && idev->cnf.mtu6 > mtu) in ip6_mtu_from_fib6()
3150 mtu = idev->cnf.mtu6; in ip6_mtu_from_fib6()
3155 return mtu - lwtunnel_headroom(nh->fib_nh_lws, mtu); in ip6_mtu_from_fib6()
3167 return ERR_PTR(-ENODEV); in icmp6_dst_alloc()
3172 dst = ERR_PTR(-ENOMEM); in icmp6_dst_alloc()
3176 rt->dst.input = ip6_input; in icmp6_dst_alloc()
3177 rt->dst.output = ip6_output; in icmp6_dst_alloc()
3178 rt->rt6i_gateway = fl6->daddr; in icmp6_dst_alloc()
3179 rt->rt6i_dst.addr = fl6->daddr; in icmp6_dst_alloc()
3180 rt->rt6i_dst.plen = 128; in icmp6_dst_alloc()
3181 rt->rt6i_idev = idev; in icmp6_dst_alloc()
3182 dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 0); in icmp6_dst_alloc()
3188 atomic_inc(&net->ipv6.rt6_stats->fib_rt_uncache); in icmp6_dst_alloc()
3190 dst = xfrm_lookup(net, &rt->dst, flowi6_to_flowi(fl6), NULL, 0); in icmp6_dst_alloc()
3199 int rt_min_interval = net->ipv6.sysctl.ip6_rt_gc_min_interval; in ip6_dst_gc()
3200 int rt_elasticity = net->ipv6.sysctl.ip6_rt_gc_elasticity; in ip6_dst_gc()
3201 int rt_gc_timeout = net->ipv6.sysctl.ip6_rt_gc_timeout; in ip6_dst_gc()
3202 unsigned long rt_last_gc = net->ipv6.ip6_rt_last_gc; in ip6_dst_gc()
3207 if (entries > ops->gc_thresh) in ip6_dst_gc()
3213 fib6_run_gc(atomic_inc_return(&net->ipv6.ip6_rt_gc_expire), net, true); in ip6_dst_gc()
3215 if (entries < ops->gc_thresh) in ip6_dst_gc()
3216 atomic_set(&net->ipv6.ip6_rt_gc_expire, rt_gc_timeout >> 1); in ip6_dst_gc()
3218 val = atomic_read(&net->ipv6.ip6_rt_gc_expire); in ip6_dst_gc()
3219 atomic_set(&net->ipv6.ip6_rt_gc_expire, val - (val >> rt_elasticity)); in ip6_dst_gc()
3227 .flowi6_oif = cfg->fc_ifindex, in ip6_nh_lookup_table()
3229 .saddr = cfg->fc_prefsrc, in ip6_nh_lookup_table()
3236 return -EINVAL; in ip6_nh_lookup_table()
3238 if (!ipv6_addr_any(&cfg->fc_prefsrc)) in ip6_nh_lookup_table()
3243 err = fib6_table_lookup(net, table, cfg->fc_ifindex, &fl6, res, flags); in ip6_nh_lookup_table()
3244 if (!err && res->f6i != net->ipv6.fib6_null_entry) in ip6_nh_lookup_table()
3245 fib6_select_path(net, res, &fl6, cfg->fc_ifindex, in ip6_nh_lookup_table()
3246 cfg->fc_ifindex != 0, NULL, flags); in ip6_nh_lookup_table()
3257 const struct in6_addr *gw_addr = &cfg->fc_gateway; in ip6_route_check_nh_onlink()
3264 !ipv6_addr_any(&res.f6i->fib6_dst.addr) && in ip6_route_check_nh_onlink()
3265 (res.fib6_type != RTN_UNICAST || dev != res.nh->fib_nh_dev)) { in ip6_route_check_nh_onlink()
3268 err = -EINVAL; in ip6_route_check_nh_onlink()
3279 const struct in6_addr *gw_addr = &cfg->fc_gateway; in ip6_route_check_nh()
3283 int err = -EHOSTUNREACH; in ip6_route_check_nh()
3285 if (cfg->fc_table) { in ip6_route_check_nh()
3287 cfg->fc_table, flags, &res); in ip6_route_check_nh()
3292 res.nh->fib_nh_gw_family || in ip6_route_check_nh()
3293 (dev && dev != res.nh->fib_nh_dev)) in ip6_route_check_nh()
3294 err = -EHOSTUNREACH; in ip6_route_check_nh()
3299 .flowi6_oif = cfg->fc_ifindex, in ip6_route_check_nh()
3303 err = fib6_lookup(net, cfg->fc_ifindex, &fl6, &res, flags); in ip6_route_check_nh()
3305 res.nh->fib_nh_gw_family) in ip6_route_check_nh()
3306 err = -EHOSTUNREACH; in ip6_route_check_nh()
3311 fib6_select_path(net, &res, &fl6, cfg->fc_ifindex, in ip6_route_check_nh()
3312 cfg->fc_ifindex != 0, NULL, flags); in ip6_route_check_nh()
3317 if (dev != res.nh->fib_nh_dev) in ip6_route_check_nh()
3318 err = -EHOSTUNREACH; in ip6_route_check_nh()
3320 *_dev = dev = res.nh->fib_nh_dev; in ip6_route_check_nh()
3332 const struct in6_addr *gw_addr = &cfg->fc_gateway; in ip6_validate_gw()
3337 int err = -EINVAL; in ip6_validate_gw()
3341 * will return already-added prefix route via interface that in ip6_validate_gw()
3342 * prefix route was assigned to, which might be non-loopback. in ip6_validate_gw()
3351 /* IPv6 strictly inhibits using not link-local in ip6_validate_gw()
3356 * some exceptions. --ANK in ip6_validate_gw()
3357 * We allow IPv4-mapped nexthops to support RFC4798-type in ip6_validate_gw()
3367 if (cfg->fc_flags & RTNH_F_ONLINK) in ip6_validate_gw()
3381 err = -EINVAL; in ip6_validate_gw()
3385 } else if (dev->flags & IFF_LOOPBACK) { in ip6_validate_gw()
3408 (dev && (dev->flags & IFF_LOOPBACK) && in fib6_is_reject()
3425 fib6_nh->fib_nh_family = AF_INET6; in fib6_nh_init()
3427 fib6_nh->last_probe = jiffies; in fib6_nh_init()
3429 if (cfg->fc_is_fdb) { in fib6_nh_init()
3430 fib6_nh->fib_nh_gw6 = cfg->fc_gateway; in fib6_nh_init()
3431 fib6_nh->fib_nh_gw_family = AF_INET6; in fib6_nh_init()
3435 err = -ENODEV; in fib6_nh_init()
3436 if (cfg->fc_ifindex) { in fib6_nh_init()
3437 dev = dev_get_by_index(net, cfg->fc_ifindex); in fib6_nh_init()
3445 if (cfg->fc_flags & RTNH_F_ONLINK) { in fib6_nh_init()
3452 if (!(dev->flags & IFF_UP)) { in fib6_nh_init()
3454 err = -ENETDOWN; in fib6_nh_init()
3458 fib6_nh->fib_nh_flags |= RTNH_F_ONLINK; in fib6_nh_init()
3461 fib6_nh->fib_nh_weight = 1; in fib6_nh_init()
3466 addr_type = ipv6_addr_type(&cfg->fc_dst); in fib6_nh_init()
3467 if (fib6_is_reject(cfg->fc_flags, dev, addr_type)) { in fib6_nh_init()
3469 if (dev != net->loopback_dev) { in fib6_nh_init()
3474 dev = net->loopback_dev; in fib6_nh_init()
3478 err = -ENODEV; in fib6_nh_init()
3485 if (cfg->fc_flags & RTF_GATEWAY) { in fib6_nh_init()
3490 fib6_nh->fib_nh_gw6 = cfg->fc_gateway; in fib6_nh_init()
3491 fib6_nh->fib_nh_gw_family = AF_INET6; in fib6_nh_init()
3494 err = -ENODEV; in fib6_nh_init()
3498 if (!idev || idev->cnf.disable_ipv6) { in fib6_nh_init()
3500 err = -EACCES; in fib6_nh_init()
3504 if (!(dev->flags & IFF_UP) && !cfg->fc_ignore_dev_down) { in fib6_nh_init()
3506 err = -ENETDOWN; in fib6_nh_init()
3510 if (!(cfg->fc_flags & (RTF_LOCAL | RTF_ANYCAST)) && in fib6_nh_init()
3512 fib6_nh->fib_nh_flags |= RTNH_F_LINKDOWN; in fib6_nh_init()
3514 err = fib_nh_common_init(net, &fib6_nh->nh_common, cfg->fc_encap, in fib6_nh_init()
3515 cfg->fc_encap_type, cfg, gfp_flags, extack); in fib6_nh_init()
3520 fib6_nh->rt6i_pcpu = alloc_percpu_gfp(struct rt6_info *, gfp_flags); in fib6_nh_init()
3521 if (!fib6_nh->rt6i_pcpu) { in fib6_nh_init()
3522 err = -ENOMEM; in fib6_nh_init()
3526 fib6_nh->fib_nh_dev = dev; in fib6_nh_init()
3527 fib6_nh->fib_nh_oif = dev->ifindex; in fib6_nh_init()
3534 fib_nh_common_release(&fib6_nh->nh_common); in fib6_nh_init()
3535 fib6_nh->nh_common.nhc_pcpu_rth_output = NULL; in fib6_nh_init()
3536 fib6_nh->fib_nh_lws = NULL; in fib6_nh_init()
3553 rcu_assign_pointer(fib6_nh->rt6i_exception_bucket, NULL); in fib6_nh_release()
3559 if (fib6_nh->rt6i_pcpu) { in fib6_nh_release()
3566 ppcpu_rt = per_cpu_ptr(fib6_nh->rt6i_pcpu, cpu); in fib6_nh_release()
3569 dst_dev_put(&pcpu_rt->dst); in fib6_nh_release()
3570 dst_release(&pcpu_rt->dst); in fib6_nh_release()
3575 free_percpu(fib6_nh->rt6i_pcpu); in fib6_nh_release()
3578 fib_nh_common_release(&fib6_nh->nh_common); in fib6_nh_release()
3585 if (!fib6_nh->rt6i_pcpu) in fib6_nh_release_dsts()
3591 ppcpu_rt = per_cpu_ptr(fib6_nh->rt6i_pcpu, cpu); in fib6_nh_release_dsts()
3594 dst_dev_put(&pcpu_rt->dst); in fib6_nh_release_dsts()
3595 dst_release(&pcpu_rt->dst); in fib6_nh_release_dsts()
3604 struct net *net = cfg->fc_nlinfo.nl_net; in ip6_route_info_create()
3609 int err = -EINVAL; in ip6_route_info_create()
3613 if (cfg->fc_flags & RTF_PCPU) { in ip6_route_info_create()
3619 if (cfg->fc_flags & RTF_CACHE) { in ip6_route_info_create()
3624 if (cfg->fc_type > RTN_MAX) { in ip6_route_info_create()
3629 if (cfg->fc_dst_len > 128) { in ip6_route_info_create()
3633 if (cfg->fc_src_len > 128) { in ip6_route_info_create()
3638 if (cfg->fc_src_len) { in ip6_route_info_create()
3644 if (cfg->fc_nh_id) { in ip6_route_info_create()
3645 nh = nexthop_find_by_id(net, cfg->fc_nh_id); in ip6_route_info_create()
3655 err = -ENOBUFS; in ip6_route_info_create()
3656 if (cfg->fc_nlinfo.nlh && in ip6_route_info_create()
3657 !(cfg->fc_nlinfo.nlh->nlmsg_flags & NLM_F_CREATE)) { in ip6_route_info_create()
3658 table = fib6_get_table(net, cfg->fc_table); in ip6_route_info_create()
3661 table = fib6_new_table(net, cfg->fc_table); in ip6_route_info_create()
3664 table = fib6_new_table(net, cfg->fc_table); in ip6_route_info_create()
3670 err = -ENOMEM; in ip6_route_info_create()
3675 rt->fib6_metrics = ip_fib_metrics_init(net, cfg->fc_mx, cfg->fc_mx_len, in ip6_route_info_create()
3677 if (IS_ERR(rt->fib6_metrics)) { in ip6_route_info_create()
3678 err = PTR_ERR(rt->fib6_metrics); in ip6_route_info_create()
3680 rt->fib6_metrics = (struct dst_metrics *)&dst_default_metrics; in ip6_route_info_create()
3684 if (cfg->fc_flags & RTF_ADDRCONF) in ip6_route_info_create()
3685 rt->dst_nocount = true; in ip6_route_info_create()
3687 if (cfg->fc_flags & RTF_EXPIRES) in ip6_route_info_create()
3689 clock_t_to_jiffies(cfg->fc_expires)); in ip6_route_info_create()
3693 if (cfg->fc_protocol == RTPROT_UNSPEC) in ip6_route_info_create()
3694 cfg->fc_protocol = RTPROT_BOOT; in ip6_route_info_create()
3695 rt->fib6_protocol = cfg->fc_protocol; in ip6_route_info_create()
3697 rt->fib6_table = table; in ip6_route_info_create()
3698 rt->fib6_metric = cfg->fc_metric; in ip6_route_info_create()
3699 rt->fib6_type = cfg->fc_type ? : RTN_UNICAST; in ip6_route_info_create()
3700 rt->fib6_flags = cfg->fc_flags & ~RTF_GATEWAY; in ip6_route_info_create()
3702 ipv6_addr_prefix(&rt->fib6_dst.addr, &cfg->fc_dst, cfg->fc_dst_len); in ip6_route_info_create()
3703 rt->fib6_dst.plen = cfg->fc_dst_len; in ip6_route_info_create()
3706 ipv6_addr_prefix(&rt->fib6_src.addr, &cfg->fc_src, cfg->fc_src_len); in ip6_route_info_create()
3707 rt->fib6_src.plen = cfg->fc_src_len; in ip6_route_info_create()
3710 if (rt->fib6_src.plen) { in ip6_route_info_create()
3718 rt->nh = nh; in ip6_route_info_create()
3719 fib6_nh = nexthop_fib6_nh(rt->nh); in ip6_route_info_create()
3721 err = fib6_nh_init(net, rt->fib6_nh, cfg, gfp_flags, extack); in ip6_route_info_create()
3725 fib6_nh = rt->fib6_nh; in ip6_route_info_create()
3730 addr_type = ipv6_addr_type(&cfg->fc_dst); in ip6_route_info_create()
3731 if (fib6_is_reject(cfg->fc_flags, rt->fib6_nh->fib_nh_dev, in ip6_route_info_create()
3733 rt->fib6_flags = RTF_REJECT | RTF_NONEXTHOP; in ip6_route_info_create()
3736 if (!ipv6_addr_any(&cfg->fc_prefsrc)) { in ip6_route_info_create()
3737 struct net_device *dev = fib6_nh->fib_nh_dev; in ip6_route_info_create()
3739 if (!ipv6_chk_addr(net, &cfg->fc_prefsrc, dev, 0)) { in ip6_route_info_create()
3741 err = -EINVAL; in ip6_route_info_create()
3744 rt->fib6_prefsrc.addr = cfg->fc_prefsrc; in ip6_route_info_create()
3745 rt->fib6_prefsrc.plen = 128; in ip6_route_info_create()
3747 rt->fib6_prefsrc.plen = 0; in ip6_route_info_create()
3754 ip_fib_metrics_put(rt->fib6_metrics); in ip6_route_info_create()
3769 err = __ip6_ins_rt(rt, &cfg->fc_nlinfo, extack); in ip6_route_add()
3777 struct net *net = info->nl_net; in __ip6_del_rt()
3781 if (rt == net->ipv6.fib6_null_entry) { in __ip6_del_rt()
3782 err = -ENOENT; in __ip6_del_rt()
3786 table = rt->fib6_table; in __ip6_del_rt()
3787 spin_lock_bh(&table->tb6_lock); in __ip6_del_rt()
3789 spin_unlock_bh(&table->tb6_lock); in __ip6_del_rt()
3808 struct nl_info *info = &cfg->fc_nlinfo; in __ip6_del_rt_siblings()
3809 struct net *net = info->nl_net; in __ip6_del_rt_siblings()
3812 int err = -ENOENT; in __ip6_del_rt_siblings()
3814 if (rt == net->ipv6.fib6_null_entry) in __ip6_del_rt_siblings()
3816 table = rt->fib6_table; in __ip6_del_rt_siblings()
3817 spin_lock_bh(&table->tb6_lock); in __ip6_del_rt_siblings()
3819 if (rt->fib6_nsiblings && cfg->fc_delete_all_nh) { in __ip6_del_rt_siblings()
3826 u32 seq = info->nlh ? info->nlh->nlmsg_seq : 0; in __ip6_del_rt_siblings()
3830 info->portid, seq, 0) < 0) { in __ip6_del_rt_siblings()
3834 info->skip_notify = 1; in __ip6_del_rt_siblings()
3842 info->skip_notify_kernel = 1; in __ip6_del_rt_siblings()
3843 fn = rcu_dereference_protected(rt->fib6_node, in __ip6_del_rt_siblings()
3844 lockdep_is_held(&table->tb6_lock)); in __ip6_del_rt_siblings()
3845 if (rcu_access_pointer(fn->leaf) == rt) { in __ip6_del_rt_siblings()
3848 last_sibling = list_last_entry(&rt->fib6_siblings, in __ip6_del_rt_siblings()
3852 last_sibling->fib6_next, in __ip6_del_rt_siblings()
3853 lockdep_is_held(&table->tb6_lock)); in __ip6_del_rt_siblings()
3860 rt, rt->fib6_nsiblings, in __ip6_del_rt_siblings()
3864 &rt->fib6_siblings, in __ip6_del_rt_siblings()
3874 spin_unlock_bh(&table->tb6_lock); in __ip6_del_rt_siblings()
3879 rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, in __ip6_del_rt_siblings()
3880 info->nlh, gfp_any()); in __ip6_del_rt_siblings()
3887 int rc = -ESRCH; in __ip6_del_cached_rt()
3889 if (cfg->fc_ifindex && rt->dst.dev->ifindex != cfg->fc_ifindex) in __ip6_del_cached_rt()
3892 if (cfg->fc_flags & RTF_GATEWAY && in __ip6_del_cached_rt()
3893 !ipv6_addr_equal(&cfg->fc_gateway, &rt->rt6i_gateway)) in __ip6_del_cached_rt()
3910 rt_cache = rt6_find_cached_rt(&res, &cfg->fc_dst, &cfg->fc_src); in ip6_del_cached_rt()
3927 rc = ip6_del_cached_rt(arg->cfg, arg->f6i, nh); in fib6_nh_del_cached_rt()
3928 return rc != -ESRCH ? rc : 0; in fib6_nh_del_cached_rt()
3938 return nexthop_for_each_fib6_nh(f6i->nh, fib6_nh_del_cached_rt, &arg); in ip6_del_cached_rt_nh()
3947 int err = -ESRCH; in ip6_route_del()
3949 table = fib6_get_table(cfg->fc_nlinfo.nl_net, cfg->fc_table); in ip6_route_del()
3957 fn = fib6_locate(&table->tb6_root, in ip6_route_del()
3958 &cfg->fc_dst, cfg->fc_dst_len, in ip6_route_del()
3959 &cfg->fc_src, cfg->fc_src_len, in ip6_route_del()
3960 !(cfg->fc_flags & RTF_CACHE)); in ip6_route_del()
3966 if (rt->nh && cfg->fc_nh_id && in ip6_route_del()
3967 rt->nh->id != cfg->fc_nh_id) in ip6_route_del()
3970 if (cfg->fc_flags & RTF_CACHE) { in ip6_route_del()
3973 if (rt->nh) { in ip6_route_del()
3975 } else if (cfg->fc_nh_id) { in ip6_route_del()
3978 nh = rt->fib6_nh; in ip6_route_del()
3981 if (rc != -ESRCH) { in ip6_route_del()
3988 if (cfg->fc_metric && cfg->fc_metric != rt->fib6_metric) in ip6_route_del()
3990 if (cfg->fc_protocol && in ip6_route_del()
3991 cfg->fc_protocol != rt->fib6_protocol) in ip6_route_del()
3994 if (rt->nh) { in ip6_route_del()
3999 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
4001 if (cfg->fc_nh_id) in ip6_route_del()
4004 nh = rt->fib6_nh; in ip6_route_del()
4005 if (cfg->fc_ifindex && in ip6_route_del()
4006 (!nh->fib_nh_dev || in ip6_route_del()
4007 nh->fib_nh_dev->ifindex != cfg->fc_ifindex)) in ip6_route_del()
4009 if (cfg->fc_flags & RTF_GATEWAY && in ip6_route_del()
4010 !ipv6_addr_equal(&cfg->fc_gateway, &nh->fib_nh_gw6)) in ip6_route_del()
4017 if (cfg->fc_flags & RTF_GATEWAY) in ip6_route_del()
4018 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
4040 optlen = skb_tail_pointer(skb) - skb_transport_header(skb); in rt6_do_redirect()
4041 optlen -= sizeof(*msg); in rt6_do_redirect()
4050 if (ipv6_addr_is_multicast(&msg->dest)) { in rt6_do_redirect()
4056 if (ipv6_addr_equal(&msg->dest, &msg->target)) { in rt6_do_redirect()
4058 } else if (ipv6_addr_type(&msg->target) != in rt6_do_redirect()
4060 net_dbg_ratelimited("rt6_do_redirect: target address is not link-local unicast\n"); in rt6_do_redirect()
4064 in6_dev = __in6_dev_get(skb->dev); in rt6_do_redirect()
4067 if (in6_dev->cnf.forwarding || !in6_dev->cnf.accept_redirects) in rt6_do_redirect()
4072 * first-hop router for the specified ICMP Destination Address. in rt6_do_redirect()
4075 if (!ndisc_parse_options(skb->dev, msg->opt, optlen, &ndopts)) { in rt6_do_redirect()
4083 skb->dev); in rt6_do_redirect()
4085 net_dbg_ratelimited("rt6_redirect: invalid link-layer address length\n"); in rt6_do_redirect()
4091 if (rt->rt6i_flags & RTF_REJECT) { in rt6_do_redirect()
4096 /* Redirect received -> path was valid. in rt6_do_redirect()
4098 * so that this nexthop apparently is reachable. --ANK in rt6_do_redirect()
4100 dst_confirm_neigh(&rt->dst, &ipv6_hdr(skb)->saddr); in rt6_do_redirect()
4102 neigh = __neigh_lookup(&nd_tbl, &msg->target, skb->dev, 1); in rt6_do_redirect()
4110 ndisc_update(skb->dev, neigh, lladdr, NUD_STALE, in rt6_do_redirect()
4118 res.f6i = rcu_dereference(rt->from); in rt6_do_redirect()
4122 if (res.f6i->nh) { in rt6_do_redirect()
4124 .dev = dst->dev, in rt6_do_redirect()
4125 .gw = &rt->rt6i_gateway, in rt6_do_redirect()
4128 nexthop_for_each_fib6_nh(res.f6i->nh, in rt6_do_redirect()
4132 * using the dst->dev. Should be impossible in rt6_do_redirect()
4138 res.nh = res.f6i->fib6_nh; in rt6_do_redirect()
4141 res.fib6_flags = res.f6i->fib6_flags; in rt6_do_redirect()
4142 res.fib6_type = res.f6i->fib6_type; in rt6_do_redirect()
4143 nrt = ip6_rt_cache_alloc(&res, &msg->dest, NULL); in rt6_do_redirect()
4147 nrt->rt6i_flags = RTF_GATEWAY|RTF_UP|RTF_DYNAMIC|RTF_CACHE; in rt6_do_redirect()
4149 nrt->rt6i_flags &= ~RTF_GATEWAY; in rt6_do_redirect()
4151 nrt->rt6i_gateway = *(struct in6_addr *)neigh->primary_key; in rt6_do_redirect()
4155 dst_release_immediate(&nrt->dst); in rt6_do_redirect()
4159 netevent.old = &rt->dst; in rt6_do_redirect()
4160 netevent.new = &nrt->dst; in rt6_do_redirect()
4161 netevent.daddr = &msg->dest; in rt6_do_redirect()
4177 int ifindex = dev->ifindex; in rt6_get_route_info()
4187 fn = fib6_locate(&table->tb6_root, prefix, prefixlen, NULL, 0, true); in rt6_get_route_info()
4192 /* these routes do not use nexthops */ in rt6_get_route_info()
4193 if (rt->nh) in rt6_get_route_info()
4195 if (rt->fib6_nh->fib_nh_dev->ifindex != ifindex) in rt6_get_route_info()
4197 if (!(rt->fib6_flags & RTF_ROUTEINFO) || in rt6_get_route_info()
4198 !rt->fib6_nh->fib_nh_gw_family) in rt6_get_route_info()
4200 if (!ipv6_addr_equal(&rt->fib6_nh->fib_nh_gw6, gwaddr)) in rt6_get_route_info()
4219 .fc_ifindex = dev->ifindex, in rt6_add_route_info()
4257 for_each_fib6_node_rt_rcu(&table->tb6_root) { in rt6_get_dflt_router()
4260 /* RA routes do not use nexthops */ in rt6_get_dflt_router()
4261 if (rt->nh) in rt6_get_dflt_router()
4264 nh = rt->fib6_nh; in rt6_get_dflt_router()
4265 if (dev == nh->fib_nh_dev && in rt6_get_dflt_router()
4266 ((rt->fib6_flags & (RTF_ADDRCONF | RTF_DEFAULT)) == (RTF_ADDRCONF | RTF_DEFAULT)) && in rt6_get_dflt_router()
4267 ipv6_addr_equal(&nh->fib_nh_gw6, addr)) in rt6_get_dflt_router()
4284 .fc_ifindex = dev->ifindex, in rt6_add_dflt_router()
4301 table->flags |= RT6_TABLE_HAS_DFLT_ROUTER; in rt6_add_dflt_router()
4314 for_each_fib6_node_rt_rcu(&table->tb6_root) { in __rt6_purge_dflt_routers()
4318 if (rt->fib6_flags & (RTF_DEFAULT | RTF_ADDRCONF) && in __rt6_purge_dflt_routers()
4319 (!idev || idev->cnf.accept_ra != 2) && in __rt6_purge_dflt_routers()
4328 table->flags &= ~RT6_TABLE_HAS_DFLT_ROUTER; in __rt6_purge_dflt_routers()
4340 head = &net->ipv6.fib_table_hash[h]; in rt6_purge_dflt_routers()
4342 if (table->flags & RT6_TABLE_HAS_DFLT_ROUTER) in rt6_purge_dflt_routers()
4355 .fc_table = l3mdev_fib_table_by_index(net, rtmsg->rtmsg_ifindex) ? in rtmsg_to_fib6_config()
4357 .fc_ifindex = rtmsg->rtmsg_ifindex, in rtmsg_to_fib6_config()
4358 .fc_metric = rtmsg->rtmsg_metric ? : IP6_RT_PRIO_USER, in rtmsg_to_fib6_config()
4359 .fc_expires = rtmsg->rtmsg_info, in rtmsg_to_fib6_config()
4360 .fc_dst_len = rtmsg->rtmsg_dst_len, in rtmsg_to_fib6_config()
4361 .fc_src_len = rtmsg->rtmsg_src_len, in rtmsg_to_fib6_config()
4362 .fc_flags = rtmsg->rtmsg_flags, in rtmsg_to_fib6_config()
4363 .fc_type = rtmsg->rtmsg_type, in rtmsg_to_fib6_config()
4367 .fc_dst = rtmsg->rtmsg_dst, in rtmsg_to_fib6_config()
4368 .fc_src = rtmsg->rtmsg_src, in rtmsg_to_fib6_config()
4369 .fc_gateway = rtmsg->rtmsg_gateway, in rtmsg_to_fib6_config()
4379 return -EINVAL; in ipv6_route_ioctl()
4380 if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) in ipv6_route_ioctl()
4381 return -EPERM; in ipv6_route_ioctl()
4405 struct net *net = dev_net(dst->dev); in ip6_pkt_drop()
4409 if (netif_is_l3_master(skb->dev) || in ip6_pkt_drop()
4410 dst->dev == net->loopback_dev) in ip6_pkt_drop()
4411 idev = __in6_dev_get_safely(dev_get_by_index_rcu(net, IP6CB(skb)->iif)); in ip6_pkt_drop()
4417 type = ipv6_addr_type(&ipv6_hdr(skb)->daddr); in ip6_pkt_drop()
4429 if (netif_is_l3_master(skb->dev)) in ip6_pkt_drop()
4444 skb->dev = skb_dst(skb)->dev; in ip6_pkt_discard_out()
4455 skb->dev = skb_dst(skb)->dev; in ip6_pkt_prohibit_out()
4469 .fc_table = l3mdev_fib_table(idev->dev) ? : RT6_TABLE_LOCAL, in addrconf_f6i_alloc()
4470 .fc_ifindex = idev->dev->ifindex, in addrconf_f6i_alloc()
4490 f6i->dst_nocount = true; in addrconf_f6i_alloc()
4493 (net->ipv6.devconf_all->disable_policy || in addrconf_f6i_alloc()
4494 idev->cnf.disable_policy)) in addrconf_f6i_alloc()
4495 f6i->dst_nopolicy = true; in addrconf_f6i_alloc()
4510 struct net_device *dev = ((struct arg_dev_net_ip *)arg)->dev; in fib6_remove_prefsrc()
4511 struct net *net = ((struct arg_dev_net_ip *)arg)->net; in fib6_remove_prefsrc()
4512 struct in6_addr *addr = ((struct arg_dev_net_ip *)arg)->addr; in fib6_remove_prefsrc()
4514 if (!rt->nh && in fib6_remove_prefsrc()
4515 ((void *)rt->fib6_nh->fib_nh_dev == dev || !dev) && in fib6_remove_prefsrc()
4516 rt != net->ipv6.fib6_null_entry && in fib6_remove_prefsrc()
4517 ipv6_addr_equal(addr, &rt->fib6_prefsrc.addr)) { in fib6_remove_prefsrc()
4520 rt->fib6_prefsrc.plen = 0; in fib6_remove_prefsrc()
4528 struct net *net = dev_net(ifp->idev->dev); in rt6_remove_prefsrc()
4530 .dev = ifp->idev->dev, in rt6_remove_prefsrc()
4532 .addr = &ifp->addr, in rt6_remove_prefsrc()
4545 /* RA routes do not use nexthops */ in fib6_clean_tohost()
4546 if (rt->nh) in fib6_clean_tohost()
4549 nh = rt->fib6_nh; in fib6_clean_tohost()
4550 if (((rt->fib6_flags & RTF_RA_ROUTER) == RTF_RA_ROUTER) && in fib6_clean_tohost()
4551 nh->fib_nh_gw_family && ipv6_addr_equal(gateway, &nh->fib_nh_gw6)) in fib6_clean_tohost()
4552 return -1; in fib6_clean_tohost()
4581 fn = rcu_dereference_protected(rt->fib6_node, in rt6_multipath_first_sibling()
4582 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4583 iter = rcu_dereference_protected(fn->leaf, in rt6_multipath_first_sibling()
4584 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4586 if (iter->fib6_metric == rt->fib6_metric && in rt6_multipath_first_sibling()
4589 iter = rcu_dereference_protected(iter->fib6_next, in rt6_multipath_first_sibling()
4590 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4599 if (rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD || in rt6_is_dead()
4600 (rt->fib6_nh->fib_nh_flags & RTNH_F_LINKDOWN && in rt6_is_dead()
4601 ip6_ignore_linkdown(rt->fib6_nh->fib_nh_dev))) in rt6_is_dead()
4613 total += rt->fib6_nh->fib_nh_weight; in rt6_multipath_total_weight()
4615 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) { in rt6_multipath_total_weight()
4617 total += iter->fib6_nh->fib_nh_weight; in rt6_multipath_total_weight()
4625 int upper_bound = -1; in rt6_upper_bound_set()
4628 *weight += rt->fib6_nh->fib_nh_weight; in rt6_upper_bound_set()
4630 total) - 1; in rt6_upper_bound_set()
4632 atomic_set(&rt->fib6_nh->fib_nh_upper_bound, upper_bound); in rt6_upper_bound_set()
4642 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_upper_bound_set()
4655 if (!rt->fib6_nsiblings || rt->should_flush) in rt6_multipath_rebalance()
4673 struct net *net = dev_net(arg->dev); in fib6_ifup()
4675 if (rt != net->ipv6.fib6_null_entry && !rt->nh && in fib6_ifup()
4676 rt->fib6_nh->fib_nh_dev == arg->dev) { in fib6_ifup()
4677 rt->fib6_nh->fib_nh_flags &= ~arg->nh_flags; in fib6_ifup()
4706 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_uses_dev()
4708 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_uses_dev()
4709 if (iter->fib6_nh->fib_nh_dev == dev) in rt6_multipath_uses_dev()
4719 rt->should_flush = 1; in rt6_multipath_flush()
4720 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_flush()
4721 iter->should_flush = 1; in rt6_multipath_flush()
4730 if (rt->fib6_nh->fib_nh_dev == down_dev || in rt6_multipath_dead_count()
4731 rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD) in rt6_multipath_dead_count()
4733 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_dead_count()
4734 if (iter->fib6_nh->fib_nh_dev == down_dev || in rt6_multipath_dead_count()
4735 iter->fib6_nh->fib_nh_flags & RTNH_F_DEAD) in rt6_multipath_dead_count()
4747 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_nh_flags_set()
4748 rt->fib6_nh->fib_nh_flags |= nh_flags; in rt6_multipath_nh_flags_set()
4749 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_nh_flags_set()
4750 if (iter->fib6_nh->fib_nh_dev == dev) in rt6_multipath_nh_flags_set()
4751 iter->fib6_nh->fib_nh_flags |= nh_flags; in rt6_multipath_nh_flags_set()
4758 const struct net_device *dev = arg->dev; in fib6_ifdown()
4761 if (rt == net->ipv6.fib6_null_entry || rt->nh) in fib6_ifdown()
4764 switch (arg->event) { in fib6_ifdown()
4766 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4768 if (rt->should_flush) in fib6_ifdown()
4769 return -1; in fib6_ifdown()
4770 if (!rt->fib6_nsiblings) in fib6_ifdown()
4771 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4776 if (rt->fib6_nsiblings + 1 == count) { in fib6_ifdown()
4778 return -1; in fib6_ifdown()
4785 return -2; in fib6_ifdown()
4787 if (rt->fib6_nh->fib_nh_dev != dev || in fib6_ifdown()
4788 rt->fib6_flags & (RTF_LOCAL | RTF_ANYCAST)) in fib6_ifdown()
4790 rt->fib6_nh->fib_nh_flags |= RTNH_F_LINKDOWN; in fib6_ifdown()
4808 if (net->ipv6.sysctl.skip_notify_on_dev_down) in rt6_sync_down_dev()
4830 struct fib6_info *f6i = arg->f6i; in fib6_nh_mtu_change()
4837 if (nh->fib_nh_dev == arg->dev) { in fib6_nh_mtu_change()
4838 struct inet6_dev *idev = __in6_dev_get(arg->dev); in fib6_nh_mtu_change()
4839 u32 mtu = f6i->fib6_pmtu; in fib6_nh_mtu_change()
4841 if (mtu >= arg->mtu || in fib6_nh_mtu_change()
4842 (mtu < arg->mtu && mtu == idev->cnf.mtu6)) in fib6_nh_mtu_change()
4843 fib6_metric_set(f6i, RTAX_MTU, arg->mtu); in fib6_nh_mtu_change()
4846 rt6_exceptions_update_pmtu(idev, nh, arg->mtu); in fib6_nh_mtu_change()
4860 We still use this lock to block changes in rt6_mtu_change_route()
4864 idev = __in6_dev_get(arg->dev); in rt6_mtu_change_route()
4871 arg->f6i = f6i; in rt6_mtu_change_route()
4872 if (f6i->nh) { in rt6_mtu_change_route()
4874 return nexthop_for_each_fib6_nh(f6i->nh, fib6_nh_mtu_change, in rt6_mtu_change_route()
4878 return fib6_nh_mtu_change(f6i->fib6_nh, arg); in rt6_mtu_change_route()
4917 struct rtmsg *rtm; in rtm_to_fib6_config() local
4922 err = nlmsg_parse_deprecated(nlh, sizeof(*rtm), tb, RTA_MAX, in rtm_to_fib6_config()
4927 err = -EINVAL; in rtm_to_fib6_config()
4928 rtm = nlmsg_data(nlh); in rtm_to_fib6_config()
4931 .fc_table = rtm->rtm_table, in rtm_to_fib6_config()
4932 .fc_dst_len = rtm->rtm_dst_len, in rtm_to_fib6_config()
4933 .fc_src_len = rtm->rtm_src_len, in rtm_to_fib6_config()
4935 .fc_protocol = rtm->rtm_protocol, in rtm_to_fib6_config()
4936 .fc_type = rtm->rtm_type, in rtm_to_fib6_config()
4940 .fc_nlinfo.nl_net = sock_net(skb->sk), in rtm_to_fib6_config()
4943 if (rtm->rtm_type == RTN_UNREACHABLE || in rtm_to_fib6_config()
4944 rtm->rtm_type == RTN_BLACKHOLE || in rtm_to_fib6_config()
4945 rtm->rtm_type == RTN_PROHIBIT || in rtm_to_fib6_config()
4946 rtm->rtm_type == RTN_THROW) in rtm_to_fib6_config()
4947 cfg->fc_flags |= RTF_REJECT; in rtm_to_fib6_config()
4949 if (rtm->rtm_type == RTN_LOCAL) in rtm_to_fib6_config()
4950 cfg->fc_flags |= RTF_LOCAL; in rtm_to_fib6_config()
4952 if (rtm->rtm_flags & RTM_F_CLONED) in rtm_to_fib6_config()
4953 cfg->fc_flags |= RTF_CACHE; in rtm_to_fib6_config()
4955 cfg->fc_flags |= (rtm->rtm_flags & RTNH_F_ONLINK); in rtm_to_fib6_config()
4964 cfg->fc_nh_id = nla_get_u32(tb[RTA_NH_ID]); in rtm_to_fib6_config()
4968 cfg->fc_gateway = nla_get_in6_addr(tb[RTA_GATEWAY]); in rtm_to_fib6_config()
4969 cfg->fc_flags |= RTF_GATEWAY; in rtm_to_fib6_config()
4977 int plen = (rtm->rtm_dst_len + 7) >> 3; in rtm_to_fib6_config()
4982 nla_memcpy(&cfg->fc_dst, tb[RTA_DST], plen); in rtm_to_fib6_config()
4986 int plen = (rtm->rtm_src_len + 7) >> 3; in rtm_to_fib6_config()
4991 nla_memcpy(&cfg->fc_src, tb[RTA_SRC], plen); in rtm_to_fib6_config()
4995 cfg->fc_prefsrc = nla_get_in6_addr(tb[RTA_PREFSRC]); in rtm_to_fib6_config()
4998 cfg->fc_ifindex = nla_get_u32(tb[RTA_OIF]); in rtm_to_fib6_config()
5001 cfg->fc_metric = nla_get_u32(tb[RTA_PRIORITY]); in rtm_to_fib6_config()
5004 cfg->fc_mx = nla_data(tb[RTA_METRICS]); in rtm_to_fib6_config()
5005 cfg->fc_mx_len = nla_len(tb[RTA_METRICS]); in rtm_to_fib6_config()
5009 cfg->fc_table = nla_get_u32(tb[RTA_TABLE]); in rtm_to_fib6_config()
5012 cfg->fc_mp = nla_data(tb[RTA_MULTIPATH]); in rtm_to_fib6_config()
5013 cfg->fc_mp_len = nla_len(tb[RTA_MULTIPATH]); in rtm_to_fib6_config()
5015 err = lwtunnel_valid_encap_type_attr(cfg->fc_mp, in rtm_to_fib6_config()
5016 cfg->fc_mp_len, extack); in rtm_to_fib6_config()
5026 cfg->fc_flags |= RTF_PREF(pref); in rtm_to_fib6_config()
5030 cfg->fc_encap = tb[RTA_ENCAP]; in rtm_to_fib6_config()
5033 cfg->fc_encap_type = nla_get_u16(tb[RTA_ENCAP_TYPE]); in rtm_to_fib6_config()
5035 err = lwtunnel_valid_encap_type(cfg->fc_encap_type, extack); in rtm_to_fib6_config()
5044 cfg->fc_expires = jiffies_to_clock_t(timeout * HZ); in rtm_to_fib6_config()
5045 cfg->fc_flags |= RTF_EXPIRES; in rtm_to_fib6_config()
5066 int err = -EEXIST; in ip6_route_info_append()
5070 if (rt6_duplicate_nexthop(nh->fib6_info, rt)) in ip6_route_info_append()
5076 return -ENOMEM; in ip6_route_info_append()
5077 nh->fib6_info = rt; in ip6_route_info_append()
5078 memcpy(&nh->r_cfg, r_cfg, sizeof(*r_cfg)); in ip6_route_info_append()
5079 list_add_tail(&nh->next, rt6_nh_list); in ip6_route_info_append()
5097 if ((nlflags & NLM_F_APPEND) && rt_last && rt_last->fib6_nsiblings) { in ip6_route_mpath_notify()
5098 rt = list_first_or_null_rcu(&rt_last->fib6_siblings, in ip6_route_mpath_notify()
5117 fn = rcu_dereference(rt->fib6_node); in ip6_route_mpath_should_notify()
5121 leaf = rcu_dereference(fn->leaf); in ip6_route_mpath_should_notify()
5126 (rt_can_ecmp && rt->fib6_metric == leaf->fib6_metric && in ip6_route_mpath_should_notify()
5140 return -EINVAL; in fib6_gw_from_attr()
5152 struct nl_info *info = &cfg->fc_nlinfo; in ip6_route_multipath_add()
5163 int replace = (cfg->fc_nlinfo.nlh && in ip6_route_multipath_add()
5164 (cfg->fc_nlinfo.nlh->nlmsg_flags & NLM_F_REPLACE)); in ip6_route_multipath_add()
5168 if (info->nlh && info->nlh->nlmsg_flags & NLM_F_APPEND) in ip6_route_multipath_add()
5171 remaining = cfg->fc_mp_len; in ip6_route_multipath_add()
5172 rtnh = (struct rtnexthop *)cfg->fc_mp; in ip6_route_multipath_add()
5179 if (rtnh->rtnh_ifindex) in ip6_route_multipath_add()
5180 r_cfg.fc_ifindex = rtnh->rtnh_ifindex; in ip6_route_multipath_add()
5205 r_cfg.fc_flags |= (rtnh->rtnh_flags & RTNH_F_ONLINK); in ip6_route_multipath_add()
5213 err = -EINVAL; in ip6_route_multipath_add()
5220 rt->fib6_nh->fib_nh_weight = rtnh->rtnh_hops + 1; in ip6_route_multipath_add()
5222 err = ip6_route_info_append(info->nl_net, &rt6_nh_list, in ip6_route_multipath_add()
5234 "Invalid nexthop configuration - no valid nexthops"); in ip6_route_multipath_add()
5235 return -EINVAL; in ip6_route_multipath_add()
5242 info->skip_notify = 1; in ip6_route_multipath_add()
5247 info->skip_notify_kernel = 1; in ip6_route_multipath_add()
5251 err = __ip6_ins_rt(nh->fib6_info, info, extack); in ip6_route_multipath_add()
5261 rt_last = nh->fib6_info; in ip6_route_multipath_add()
5265 rt_notif = nh->fib6_info; in ip6_route_multipath_add()
5274 if (cfg->fc_nlinfo.nlh) { in ip6_route_multipath_add()
5275 cfg->fc_nlinfo.nlh->nlmsg_flags &= ~(NLM_F_EXCL | in ip6_route_multipath_add()
5277 cfg->fc_nlinfo.nlh->nlmsg_flags |= NLM_F_CREATE; in ip6_route_multipath_add()
5282 /* An in-kernel notification should only be sent in case the new in ip6_route_multipath_add()
5290 if (rt_notif->fib6_nsiblings != nhn - 1) in ip6_route_multipath_add()
5295 err = call_fib6_multipath_entry_notifiers(info->nl_net, in ip6_route_multipath_add()
5297 nhn - 1, extack); in ip6_route_multipath_add()
5321 ip6_route_del(&nh->r_cfg, extack); in ip6_route_multipath_add()
5326 fib6_info_release(nh->fib6_info); in ip6_route_multipath_add()
5327 list_del(&nh->next); in ip6_route_multipath_add()
5344 remaining = cfg->fc_mp_len; in ip6_route_multipath_del()
5345 rtnh = (struct rtnexthop *)cfg->fc_mp; in ip6_route_multipath_del()
5350 if (rtnh->rtnh_ifindex) in ip6_route_multipath_del()
5351 r_cfg.fc_ifindex = rtnh->rtnh_ifindex; in ip6_route_multipath_del()
5391 !nexthop_find_by_id(sock_net(skb->sk), cfg.fc_nh_id)) { in inet6_rtm_delroute()
5393 return -EINVAL; in inet6_rtm_delroute()
5432 if (nh->fib_nh_lws) { in rt6_nh_nlmsg_size()
5434 *nexthop_len += lwtunnel_get_encap_size(nh->fib_nh_lws); in rt6_nh_nlmsg_size()
5446 if (f6i->nh) { in rt6_nlmsg_size()
5448 nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_nlmsg_size, in rt6_nlmsg_size()
5451 struct fib6_nh *nh = f6i->fib6_nh; in rt6_nlmsg_size()
5455 if (f6i->fib6_nsiblings) { in rt6_nlmsg_size()
5460 list_for_each_entry_rcu(sibling, &f6i->fib6_siblings, in rt6_nlmsg_size()
5462 rt6_nh_nlmsg_size(sibling->fib6_nh, &nexthop_len); in rt6_nlmsg_size()
5467 nexthop_len += lwtunnel_get_encap_size(nh->fib_nh_lws); in rt6_nlmsg_size()
5504 if (fib_nexthop_info(skb, &fib6_nh->nh_common, AF_INET6, in rt6_fill_node_nexthop()
5512 return -EMSGSIZE; in rt6_fill_node_nexthop()
5526 struct rtmsg *rtm; in rt6_fill_node() local
5529 nlh = nlmsg_put(skb, portid, seq, type, sizeof(*rtm), flags); in rt6_fill_node()
5531 return -EMSGSIZE; in rt6_fill_node()
5534 rt6_dst = &rt6->rt6i_dst; in rt6_fill_node()
5535 rt6_src = &rt6->rt6i_src; in rt6_fill_node()
5536 rt6_flags = rt6->rt6i_flags; in rt6_fill_node()
5538 rt6_dst = &rt->fib6_dst; in rt6_fill_node()
5539 rt6_src = &rt->fib6_src; in rt6_fill_node()
5540 rt6_flags = rt->fib6_flags; in rt6_fill_node()
5543 rtm = nlmsg_data(nlh); in rt6_fill_node()
5544 rtm->rtm_family = AF_INET6; in rt6_fill_node()
5545 rtm->rtm_dst_len = rt6_dst->plen; in rt6_fill_node()
5546 rtm->rtm_src_len = rt6_src->plen; in rt6_fill_node()
5547 rtm->rtm_tos = 0; in rt6_fill_node()
5548 if (rt->fib6_table) in rt6_fill_node()
5549 table = rt->fib6_table->tb6_id; in rt6_fill_node()
5552 rtm->rtm_table = table < 256 ? table : RT_TABLE_COMPAT; in rt6_fill_node()
5556 rtm->rtm_type = rt->fib6_type; in rt6_fill_node()
5557 rtm->rtm_flags = 0; in rt6_fill_node()
5558 rtm->rtm_scope = RT_SCOPE_UNIVERSE; in rt6_fill_node()
5559 rtm->rtm_protocol = rt->fib6_protocol; in rt6_fill_node()
5562 rtm->rtm_flags |= RTM_F_CLONED; in rt6_fill_node()
5567 rtm->rtm_dst_len = 128; in rt6_fill_node()
5568 } else if (rtm->rtm_dst_len) in rt6_fill_node()
5569 if (nla_put_in6_addr(skb, RTA_DST, &rt6_dst->addr)) in rt6_fill_node()
5575 rtm->rtm_src_len = 128; in rt6_fill_node()
5576 } else if (rtm->rtm_src_len && in rt6_fill_node()
5577 nla_put_in6_addr(skb, RTA_SRC, &rt6_src->addr)) in rt6_fill_node()
5582 if (ipv6_addr_is_multicast(&rt6_dst->addr)) { in rt6_fill_node()
5583 int err = ip6mr_get_route(net, skb, rtm, portid); in rt6_fill_node()
5600 if (rt->fib6_prefsrc.plen) { in rt6_fill_node()
5602 saddr_buf = rt->fib6_prefsrc.addr; in rt6_fill_node()
5607 pmetrics = dst ? dst_metrics_ptr(dst) : rt->fib6_metrics->metrics; in rt6_fill_node()
5611 if (nla_put_u32(skb, RTA_PRIORITY, rt->fib6_metric)) in rt6_fill_node()
5619 nla_put_in6_addr(skb, RTA_GATEWAY, &rt6->rt6i_gateway)) in rt6_fill_node()
5622 if (dst->dev && nla_put_u32(skb, RTA_OIF, dst->dev->ifindex)) in rt6_fill_node()
5624 } else if (rt->fib6_nsiblings) { in rt6_fill_node()
5632 if (fib_add_nexthop(skb, &rt->fib6_nh->nh_common, in rt6_fill_node()
5633 rt->fib6_nh->fib_nh_weight, AF_INET6, in rt6_fill_node()
5639 list_for_each_entry_rcu(sibling, &rt->fib6_siblings, in rt6_fill_node()
5641 if (fib_add_nexthop(skb, &sibling->fib6_nh->nh_common, in rt6_fill_node()
5642 sibling->fib6_nh->fib_nh_weight, in rt6_fill_node()
5653 } else if (rt->nh) { in rt6_fill_node()
5654 if (nla_put_u32(skb, RTA_NH_ID, rt->nh->id)) in rt6_fill_node()
5657 if (nexthop_is_blackhole(rt->nh)) in rt6_fill_node()
5658 rtm->rtm_type = RTN_BLACKHOLE; in rt6_fill_node()
5660 if (READ_ONCE(net->ipv4.sysctl_nexthop_compat_mode) && in rt6_fill_node()
5661 rt6_fill_node_nexthop(skb, rt->nh, &nh_flags) < 0) in rt6_fill_node()
5664 rtm->rtm_flags |= nh_flags; in rt6_fill_node()
5666 if (fib_nexthop_info(skb, &rt->fib6_nh->nh_common, AF_INET6, in rt6_fill_node()
5670 rtm->rtm_flags |= nh_flags; in rt6_fill_node()
5674 expires = dst ? dst->expires : rt->expires; in rt6_fill_node()
5675 expires -= jiffies; in rt6_fill_node()
5679 if (rt->offload) in rt6_fill_node()
5680 rtm->rtm_flags |= RTM_F_OFFLOAD; in rt6_fill_node()
5681 if (rt->trap) in rt6_fill_node()
5682 rtm->rtm_flags |= RTM_F_TRAP; in rt6_fill_node()
5685 if (rtnl_put_cacheinfo(skb, dst, 0, expires, dst ? dst->error : 0) < 0) in rt6_fill_node()
5697 return -EMSGSIZE; in rt6_fill_node()
5704 if (nh->fib_nh_dev == dev) in fib6_info_nh_uses_dev()
5713 if (f6i->nh) { in fib6_info_uses_dev()
5716 return !!nexthop_for_each_fib6_nh(f6i->nh, in fib6_info_uses_dev()
5721 if (f6i->fib6_nh->fib_nh_dev == dev) in fib6_info_uses_dev()
5724 if (f6i->fib6_nsiblings) { in fib6_info_uses_dev()
5728 &f6i->fib6_siblings, fib6_siblings) { in fib6_info_uses_dev()
5729 if (sibling->fib6_nh->fib_nh_dev == dev) in fib6_info_uses_dev()
5748 struct rt6_rtnl_dump_arg *dump = w->dump; in rt6_nh_dump_exceptions()
5758 hlist_for_each_entry(rt6_ex, &bucket->chain, hlist) { in rt6_nh_dump_exceptions()
5759 if (w->skip) { in rt6_nh_dump_exceptions()
5760 w->skip--; in rt6_nh_dump_exceptions()
5775 if (rt6_check_expired(rt6_ex->rt6i)) { in rt6_nh_dump_exceptions()
5776 w->count++; in rt6_nh_dump_exceptions()
5780 err = rt6_fill_node(dump->net, dump->skb, w->rt, in rt6_nh_dump_exceptions()
5781 &rt6_ex->rt6i->dst, NULL, NULL, 0, in rt6_nh_dump_exceptions()
5783 NETLINK_CB(dump->cb->skb).portid, in rt6_nh_dump_exceptions()
5784 dump->cb->nlh->nlmsg_seq, w->flags); in rt6_nh_dump_exceptions()
5788 w->count++; in rt6_nh_dump_exceptions()
5796 /* Return -1 if done with node, number of handled routes on partial dump */
5800 struct fib_dump_filter *filter = &arg->filter; in rt6_dump_route()
5802 struct net *net = arg->net; in rt6_dump_route()
5805 if (rt == net->ipv6.fib6_null_entry) in rt6_dump_route()
5806 return -1; in rt6_dump_route()
5808 if ((filter->flags & RTM_F_PREFIX) && in rt6_dump_route()
5809 !(rt->fib6_flags & RTF_PREFIX_RT)) { in rt6_dump_route()
5811 return -1; in rt6_dump_route()
5813 if (filter->filter_set && in rt6_dump_route()
5814 ((filter->rt_type && rt->fib6_type != filter->rt_type) || in rt6_dump_route()
5815 (filter->dev && !fib6_info_uses_dev(rt, filter->dev)) || in rt6_dump_route()
5816 (filter->protocol && rt->fib6_protocol != filter->protocol))) { in rt6_dump_route()
5817 return -1; in rt6_dump_route()
5820 if (filter->filter_set || in rt6_dump_route()
5821 !filter->dump_routes || !filter->dump_exceptions) { in rt6_dump_route()
5825 if (filter->dump_routes) { in rt6_dump_route()
5827 skip--; in rt6_dump_route()
5829 if (rt6_fill_node(net, arg->skb, rt, NULL, NULL, NULL, in rt6_dump_route()
5831 NETLINK_CB(arg->cb->skb).portid, in rt6_dump_route()
5832 arg->cb->nlh->nlmsg_seq, flags)) { in rt6_dump_route()
5839 if (filter->dump_exceptions) { in rt6_dump_route()
5848 if (rt->nh) { in rt6_dump_route()
5849 err = nexthop_for_each_fib6_nh(rt->nh, in rt6_dump_route()
5853 err = rt6_nh_dump_exceptions(rt->fib6_nh, &w); in rt6_dump_route()
5861 return -1; in rt6_dump_route()
5869 struct rtmsg *rtm; in inet6_rtm_valid_getroute_req() local
5872 if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*rtm))) { in inet6_rtm_valid_getroute_req()
5875 return -EINVAL; in inet6_rtm_valid_getroute_req()
5879 return nlmsg_parse_deprecated(nlh, sizeof(*rtm), tb, RTA_MAX, in inet6_rtm_valid_getroute_req()
5882 rtm = nlmsg_data(nlh); in inet6_rtm_valid_getroute_req()
5883 if ((rtm->rtm_src_len && rtm->rtm_src_len != 128) || in inet6_rtm_valid_getroute_req()
5884 (rtm->rtm_dst_len && rtm->rtm_dst_len != 128) || in inet6_rtm_valid_getroute_req()
5885 rtm->rtm_table || rtm->rtm_protocol || rtm->rtm_scope || in inet6_rtm_valid_getroute_req()
5886 rtm->rtm_type) { in inet6_rtm_valid_getroute_req()
5888 return -EINVAL; in inet6_rtm_valid_getroute_req()
5890 if (rtm->rtm_flags & ~RTM_F_FIB_MATCH) { in inet6_rtm_valid_getroute_req()
5893 return -EINVAL; in inet6_rtm_valid_getroute_req()
5896 err = nlmsg_parse_deprecated_strict(nlh, sizeof(*rtm), tb, RTA_MAX, in inet6_rtm_valid_getroute_req()
5901 if ((tb[RTA_SRC] && !rtm->rtm_src_len) || in inet6_rtm_valid_getroute_req()
5902 (tb[RTA_DST] && !rtm->rtm_dst_len)) { in inet6_rtm_valid_getroute_req()
5904 return -EINVAL; in inet6_rtm_valid_getroute_req()
5924 return -EINVAL; in inet6_rtm_valid_getroute_req()
5934 struct net *net = sock_net(in_skb->sk); in inet6_rtm_getroute()
5941 struct rtmsg *rtm; in inet6_rtm_getroute() local
5949 err = -EINVAL; in inet6_rtm_getroute()
5950 rtm = nlmsg_data(nlh); in inet6_rtm_getroute()
5951 fl6.flowlabel = ip6_make_flowinfo(rtm->rtm_tos, 0); in inet6_rtm_getroute()
5952 fibmatch = !!(rtm->rtm_flags & RTM_F_FIB_MATCH); in inet6_rtm_getroute()
6006 err = -ENODEV; in inet6_rtm_getroute()
6026 if (rt->dst.error) { in inet6_rtm_getroute()
6027 err = rt->dst.error; in inet6_rtm_getroute()
6032 if (rt == net->ipv6.ip6_null_entry) { in inet6_rtm_getroute()
6033 err = rt->dst.error; in inet6_rtm_getroute()
6041 err = -ENOBUFS; in inet6_rtm_getroute()
6045 skb_dst_set(skb, &rt->dst); in inet6_rtm_getroute()
6048 from = rcu_dereference(rt->from); in inet6_rtm_getroute()
6054 nlh->nlmsg_seq, 0); in inet6_rtm_getroute()
6059 nlh->nlmsg_seq, 0); in inet6_rtm_getroute()
6061 err = -ENETUNREACH; in inet6_rtm_getroute()
6079 struct net *net = info->nl_net; in inet6_rt_notify()
6083 err = -ENOBUFS; in inet6_rt_notify()
6084 seq = info->nlh ? info->nlh->nlmsg_seq : 0; in inet6_rt_notify()
6091 event, info->portid, seq, nlm_flags); in inet6_rt_notify()
6093 /* -EMSGSIZE implies BUG in rt6_nlmsg_size() */ in inet6_rt_notify()
6094 WARN_ON(err == -EMSGSIZE); in inet6_rt_notify()
6098 rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, in inet6_rt_notify()
6099 info->nlh, GFP_ATOMIC); in inet6_rt_notify()
6109 u32 seq = info->nlh ? info->nlh->nlmsg_seq : 0; in fib6_rt_update()
6111 int err = -ENOBUFS; in fib6_rt_update()
6113 /* call_fib6_entry_notifiers will be removed when in-kernel notifier in fib6_rt_update()
6123 RTM_NEWROUTE, info->portid, seq, NLM_F_REPLACE); in fib6_rt_update()
6125 /* -EMSGSIZE implies BUG in rt6_nlmsg_size() */ in fib6_rt_update()
6126 WARN_ON(err == -EMSGSIZE); in fib6_rt_update()
6130 rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, in fib6_rt_update()
6131 info->nlh, gfp_any()); in fib6_rt_update()
6144 if (!(dev->flags & IFF_LOOPBACK)) in ip6_route_dev_notify()
6148 net->ipv6.fib6_null_entry->fib6_nh->fib_nh_dev = dev; in ip6_route_dev_notify()
6149 net->ipv6.ip6_null_entry->dst.dev = dev; in ip6_route_dev_notify()
6150 net->ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(dev); in ip6_route_dev_notify()
6152 net->ipv6.ip6_prohibit_entry->dst.dev = dev; in ip6_route_dev_notify()
6153 net->ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(dev); in ip6_route_dev_notify()
6154 net->ipv6.ip6_blk_hole_entry->dst.dev = dev; in ip6_route_dev_notify()
6155 net->ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(dev); in ip6_route_dev_notify()
6158 dev->reg_state != NETREG_UNREGISTERED) { in ip6_route_dev_notify()
6162 in6_dev_put_clear(&net->ipv6.ip6_null_entry->rt6i_idev); in ip6_route_dev_notify()
6164 in6_dev_put_clear(&net->ipv6.ip6_prohibit_entry->rt6i_idev); in ip6_route_dev_notify()
6165 in6_dev_put_clear(&net->ipv6.ip6_blk_hole_entry->rt6i_idev); in ip6_route_dev_notify()
6179 struct net *net = (struct net *)seq->private; in rt6_stats_seq_show()
6181 net->ipv6.rt6_stats->fib_nodes, in rt6_stats_seq_show()
6182 net->ipv6.rt6_stats->fib_route_nodes, in rt6_stats_seq_show()
6183 atomic_read(&net->ipv6.rt6_stats->fib_rt_alloc), in rt6_stats_seq_show()
6184 net->ipv6.rt6_stats->fib_rt_entries, in rt6_stats_seq_show()
6185 net->ipv6.rt6_stats->fib_rt_cache, in rt6_stats_seq_show()
6186 dst_entries_get_slow(&net->ipv6.ip6_dst_ops), in rt6_stats_seq_show()
6187 net->ipv6.rt6_stats->fib_discarded_routes); in rt6_stats_seq_show()
6202 return -EINVAL; in ipv6_sysctl_rtcache_flush()
6204 net = (struct net *)ctl->extra1; in ipv6_sysctl_rtcache_flush()
6205 delay = net->ipv6.sysctl.flush_delay; in ipv6_sysctl_rtcache_flush()
6306 table[0].data = &net->ipv6.sysctl.flush_delay; in ipv6_route_sysctl_init()
6308 table[1].data = &net->ipv6.ip6_dst_ops.gc_thresh; in ipv6_route_sysctl_init()
6309 table[2].data = &net->ipv6.sysctl.ip6_rt_max_size; in ipv6_route_sysctl_init()
6310 table[3].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval; in ipv6_route_sysctl_init()
6311 table[4].data = &net->ipv6.sysctl.ip6_rt_gc_timeout; in ipv6_route_sysctl_init()
6312 table[5].data = &net->ipv6.sysctl.ip6_rt_gc_interval; in ipv6_route_sysctl_init()
6313 table[6].data = &net->ipv6.sysctl.ip6_rt_gc_elasticity; in ipv6_route_sysctl_init()
6314 table[7].data = &net->ipv6.sysctl.ip6_rt_mtu_expires; in ipv6_route_sysctl_init()
6315 table[8].data = &net->ipv6.sysctl.ip6_rt_min_advmss; in ipv6_route_sysctl_init()
6316 table[9].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval; in ipv6_route_sysctl_init()
6317 table[10].data = &net->ipv6.sysctl.skip_notify_on_dev_down; in ipv6_route_sysctl_init()
6320 if (net->user_ns != &init_user_ns) in ipv6_route_sysctl_init()
6330 int ret = -ENOMEM; in ip6_route_net_init()
6332 memcpy(&net->ipv6.ip6_dst_ops, &ip6_dst_ops_template, in ip6_route_net_init()
6333 sizeof(net->ipv6.ip6_dst_ops)); in ip6_route_net_init()
6335 if (dst_entries_init(&net->ipv6.ip6_dst_ops) < 0) in ip6_route_net_init()
6338 net->ipv6.fib6_null_entry = fib6_info_alloc(GFP_KERNEL, true); in ip6_route_net_init()
6339 if (!net->ipv6.fib6_null_entry) in ip6_route_net_init()
6341 memcpy(net->ipv6.fib6_null_entry, &fib6_null_entry_template, in ip6_route_net_init()
6342 sizeof(*net->ipv6.fib6_null_entry)); in ip6_route_net_init()
6344 net->ipv6.ip6_null_entry = kmemdup(&ip6_null_entry_template, in ip6_route_net_init()
6345 sizeof(*net->ipv6.ip6_null_entry), in ip6_route_net_init()
6347 if (!net->ipv6.ip6_null_entry) in ip6_route_net_init()
6349 net->ipv6.ip6_null_entry->dst.ops = &net->ipv6.ip6_dst_ops; in ip6_route_net_init()
6350 dst_init_metrics(&net->ipv6.ip6_null_entry->dst, in ip6_route_net_init()
6352 INIT_LIST_HEAD(&net->ipv6.ip6_null_entry->rt6i_uncached); in ip6_route_net_init()
6355 net->ipv6.fib6_has_custom_rules = false; in ip6_route_net_init()
6356 net->ipv6.ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template, in ip6_route_net_init()
6357 sizeof(*net->ipv6.ip6_prohibit_entry), in ip6_route_net_init()
6359 if (!net->ipv6.ip6_prohibit_entry) in ip6_route_net_init()
6361 net->ipv6.ip6_prohibit_entry->dst.ops = &net->ipv6.ip6_dst_ops; in ip6_route_net_init()
6362 dst_init_metrics(&net->ipv6.ip6_prohibit_entry->dst, in ip6_route_net_init()
6364 INIT_LIST_HEAD(&net->ipv6.ip6_prohibit_entry->rt6i_uncached); in ip6_route_net_init()
6366 net->ipv6.ip6_blk_hole_entry = kmemdup(&ip6_blk_hole_entry_template, in ip6_route_net_init()
6367 sizeof(*net->ipv6.ip6_blk_hole_entry), in ip6_route_net_init()
6369 if (!net->ipv6.ip6_blk_hole_entry) in ip6_route_net_init()
6371 net->ipv6.ip6_blk_hole_entry->dst.ops = &net->ipv6.ip6_dst_ops; in ip6_route_net_init()
6372 dst_init_metrics(&net->ipv6.ip6_blk_hole_entry->dst, in ip6_route_net_init()
6374 INIT_LIST_HEAD(&net->ipv6.ip6_blk_hole_entry->rt6i_uncached); in ip6_route_net_init()
6376 net->ipv6.fib6_routes_require_src = 0; in ip6_route_net_init()
6380 net->ipv6.sysctl.flush_delay = 0; in ip6_route_net_init()
6381 net->ipv6.sysctl.ip6_rt_max_size = INT_MAX; in ip6_route_net_init()
6382 net->ipv6.sysctl.ip6_rt_gc_min_interval = HZ / 2; in ip6_route_net_init()
6383 net->ipv6.sysctl.ip6_rt_gc_timeout = 60*HZ; in ip6_route_net_init()
6384 net->ipv6.sysctl.ip6_rt_gc_interval = 30*HZ; in ip6_route_net_init()
6385 net->ipv6.sysctl.ip6_rt_gc_elasticity = 9; in ip6_route_net_init()
6386 net->ipv6.sysctl.ip6_rt_mtu_expires = 10*60*HZ; in ip6_route_net_init()
6387 net->ipv6.sysctl.ip6_rt_min_advmss = IPV6_MIN_MTU - 20 - 40; in ip6_route_net_init()
6388 net->ipv6.sysctl.skip_notify_on_dev_down = 0; in ip6_route_net_init()
6390 atomic_set(&net->ipv6.ip6_rt_gc_expire, 30*HZ); in ip6_route_net_init()
6398 kfree(net->ipv6.ip6_prohibit_entry); in ip6_route_net_init()
6400 kfree(net->ipv6.ip6_null_entry); in ip6_route_net_init()
6403 kfree(net->ipv6.fib6_null_entry); in ip6_route_net_init()
6405 dst_entries_destroy(&net->ipv6.ip6_dst_ops); in ip6_route_net_init()
6412 kfree(net->ipv6.fib6_null_entry); in ip6_route_net_exit()
6413 kfree(net->ipv6.ip6_null_entry); in ip6_route_net_exit()
6415 kfree(net->ipv6.ip6_prohibit_entry); in ip6_route_net_exit()
6416 kfree(net->ipv6.ip6_blk_hole_entry); in ip6_route_net_exit()
6418 dst_entries_destroy(&net->ipv6.ip6_dst_ops); in ip6_route_net_exit()
6424 if (!proc_create_net("ipv6_route", 0, net->proc_net, in ip6_route_net_init_late()
6427 return -ENOMEM; in ip6_route_net_init_late()
6429 if (!proc_create_net_single("rt6_stats", 0444, net->proc_net, in ip6_route_net_init_late()
6431 remove_proc_entry("ipv6_route", net->proc_net); in ip6_route_net_init_late()
6432 return -ENOMEM; in ip6_route_net_init_late()
6441 remove_proc_entry("ipv6_route", net->proc_net); in ip6_route_net_exit_late()
6442 remove_proc_entry("rt6_stats", net->proc_net); in ip6_route_net_exit_late()
6456 return -ENOMEM; in ipv6_inetpeer_init()
6458 net->ipv6.peers = bp; in ipv6_inetpeer_init()
6464 struct inet_peer_base *bp = net->ipv6.peers; in ipv6_inetpeer_exit()
6466 net->ipv6.peers = NULL; in ipv6_inetpeer_exit()
6483 .priority = ADDRCONF_NOTIFY_PRIORITY - 10,
6491 init_net.ipv6.fib6_null_entry->fib6_nh->fib_nh_dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6492 init_net.ipv6.ip6_null_entry->dst.dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6493 init_net.ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev); in ip6_route_init_special_entries()
6495 init_net.ipv6.ip6_prohibit_entry->dst.dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6496 init_net.ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev); in ip6_route_init_special_entries()
6497 init_net.ipv6.ip6_blk_hole_entry->dst.dev = init_net.loopback_dev; in ip6_route_init_special_entries()
6498 init_net.ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev); in ip6_route_init_special_entries()
6544 ret = -ENOMEM; in ip6_route_init()
6612 INIT_LIST_HEAD(&ul->head); in ip6_route_init()
6613 spin_lock_init(&ul->lock); in ip6_route_init()