Lines Matching full:rt
107 struct fib6_info *rt, struct dst_entry *dst,
134 void rt6_uncached_list_add(struct rt6_info *rt) in rt6_uncached_list_add() argument
138 rt->rt6i_uncached_list = ul; in rt6_uncached_list_add()
141 list_add_tail(&rt->rt6i_uncached, &ul->head); in rt6_uncached_list_add()
145 void rt6_uncached_list_del(struct rt6_info *rt) in rt6_uncached_list_del() argument
147 if (!list_empty(&rt->rt6i_uncached)) { in rt6_uncached_list_del()
148 struct uncached_list *ul = rt->rt6i_uncached_list; in rt6_uncached_list_del()
149 struct net *net = dev_net(rt->dst.dev); in rt6_uncached_list_del()
152 list_del(&rt->rt6i_uncached); in rt6_uncached_list_del()
168 struct rt6_info *rt; in rt6_uncached_list_flush_dev() local
171 list_for_each_entry(rt, &ul->head, rt6i_uncached) { in rt6_uncached_list_flush_dev()
172 struct inet6_dev *rt_idev = rt->rt6i_idev; in rt6_uncached_list_flush_dev()
173 struct net_device *rt_dev = rt->dst.dev; in rt6_uncached_list_flush_dev()
176 rt->rt6i_idev = in6_dev_get(loopback_dev); in rt6_uncached_list_flush_dev()
181 rt->dst.dev = blackhole_netdev; in rt6_uncached_list_flush_dev()
182 dev_hold(rt->dst.dev); in rt6_uncached_list_flush_dev()
221 const struct rt6_info *rt = container_of(dst, struct rt6_info, dst); in ip6_dst_neigh_lookup() local
223 return ip6_neigh_lookup(rt6_nexthop(rt, &in6addr_any), in ip6_dst_neigh_lookup()
230 struct rt6_info *rt = (struct rt6_info *)dst; in ip6_confirm_neigh() local
232 daddr = choose_neigh_daddr(rt6_nexthop(rt, &in6addr_any), NULL, daddr); in ip6_confirm_neigh()
344 static void rt6_info_init(struct rt6_info *rt) in rt6_info_init() argument
346 struct dst_entry *dst = &rt->dst; in rt6_info_init()
348 memset(dst + 1, 0, sizeof(*rt) - sizeof(*dst)); in rt6_info_init()
349 INIT_LIST_HEAD(&rt->rt6i_uncached); in rt6_info_init()
356 struct rt6_info *rt = dst_alloc(&net->ipv6.ip6_dst_ops, dev, in ip6_dst_alloc() local
359 if (rt) { in ip6_dst_alloc()
360 rt6_info_init(rt); in ip6_dst_alloc()
364 return rt; in ip6_dst_alloc()
370 struct rt6_info *rt = (struct rt6_info *)dst; in ip6_dst_destroy() local
375 rt6_uncached_list_del(rt); in ip6_dst_destroy()
377 idev = rt->rt6i_idev; in ip6_dst_destroy()
379 rt->rt6i_idev = NULL; in ip6_dst_destroy()
383 from = xchg((__force struct fib6_info **)&rt->from, NULL); in ip6_dst_destroy()
390 struct rt6_info *rt = (struct rt6_info *)dst; in ip6_dst_ifdown() local
391 struct inet6_dev *idev = rt->rt6i_idev; in ip6_dst_ifdown()
398 rt->rt6i_idev = loopback_idev; in ip6_dst_ifdown()
404 static bool __rt6_check_expired(const struct rt6_info *rt) in __rt6_check_expired() argument
406 if (rt->rt6i_flags & RTF_EXPIRES) in __rt6_check_expired()
407 return time_after(jiffies, rt->dst.expires); in __rt6_check_expired()
412 static bool rt6_check_expired(const struct rt6_info *rt) in rt6_check_expired() argument
416 from = rcu_dereference(rt->from); in rt6_check_expired()
418 if (rt->rt6i_flags & RTF_EXPIRES) { in rt6_check_expired()
419 if (time_after(jiffies, rt->dst.expires)) in rt6_check_expired()
422 return rt->dst.obsolete != DST_OBSOLETE_FORCE_CHK || in rt6_check_expired()
947 struct fib6_info *rt; in rt6_route_rcv() local
985 rt = rt6_get_dflt_router(net, gwaddr, dev); in rt6_route_rcv()
987 rt = rt6_get_route_info(net, prefix, rinfo->prefix_len, in rt6_route_rcv()
990 if (rt && !lifetime) { in rt6_route_rcv()
991 ip6_del_rt(net, rt, false); in rt6_route_rcv()
992 rt = NULL; in rt6_route_rcv()
995 if (!rt && lifetime) in rt6_route_rcv()
996 rt = rt6_add_route_info(net, prefix, rinfo->prefix_len, gwaddr, in rt6_route_rcv()
998 else if (rt) in rt6_route_rcv()
999 rt->fib6_flags = RTF_ROUTEINFO | in rt6_route_rcv()
1000 (rt->fib6_flags & ~RTF_PREF_MASK) | RTF_PREF(pref); in rt6_route_rcv()
1002 if (rt) { in rt6_route_rcv()
1004 fib6_clean_expires(rt); in rt6_route_rcv()
1006 fib6_set_expires(rt, jiffies + HZ * lifetime); in rt6_route_rcv()
1008 fib6_info_release(rt); in rt6_route_rcv()
1061 static unsigned short fib6_info_dst_flags(struct fib6_info *rt) in fib6_info_dst_flags() argument
1065 if (rt->dst_nocount) in fib6_info_dst_flags()
1067 if (rt->dst_nopolicy) in fib6_info_dst_flags()
1073 static void ip6_rt_init_dst_reject(struct rt6_info *rt, u8 fib6_type) in ip6_rt_init_dst_reject() argument
1075 rt->dst.error = ip6_rt_type_to_error(fib6_type); in ip6_rt_init_dst_reject()
1079 rt->dst.output = dst_discard_out; in ip6_rt_init_dst_reject()
1080 rt->dst.input = dst_discard; in ip6_rt_init_dst_reject()
1083 rt->dst.output = ip6_pkt_prohibit_out; in ip6_rt_init_dst_reject()
1084 rt->dst.input = ip6_pkt_prohibit; in ip6_rt_init_dst_reject()
1089 rt->dst.output = ip6_pkt_discard_out; in ip6_rt_init_dst_reject()
1090 rt->dst.input = ip6_pkt_discard; in ip6_rt_init_dst_reject()
1095 static void ip6_rt_init_dst(struct rt6_info *rt, const struct fib6_result *res) in ip6_rt_init_dst() argument
1100 ip6_rt_init_dst_reject(rt, res->fib6_type); in ip6_rt_init_dst()
1104 rt->dst.error = 0; in ip6_rt_init_dst()
1105 rt->dst.output = ip6_output; in ip6_rt_init_dst()
1108 rt->dst.input = ip6_input; in ip6_rt_init_dst()
1110 rt->dst.input = ip6_mc_input; in ip6_rt_init_dst()
1112 rt->dst.input = ip6_forward; in ip6_rt_init_dst()
1116 rt->dst.lwtstate = lwtstate_get(res->nh->fib_nh_lws); in ip6_rt_init_dst()
1117 lwtunnel_set_redirect(&rt->dst); in ip6_rt_init_dst()
1120 rt->dst.lastuse = jiffies; in ip6_rt_init_dst()
1124 static void rt6_set_from(struct rt6_info *rt, struct fib6_info *from) in rt6_set_from() argument
1126 rt->rt6i_flags &= ~RTF_EXPIRES; in rt6_set_from()
1127 rcu_assign_pointer(rt->from, from); in rt6_set_from()
1128 ip_dst_init_metrics(&rt->dst, from->fib6_metrics); in rt6_set_from()
1132 static void ip6_rt_copy_init(struct rt6_info *rt, const struct fib6_result *res) in ip6_rt_copy_init() argument
1138 ip6_rt_init_dst(rt, res); in ip6_rt_copy_init()
1140 rt->rt6i_dst = f6i->fib6_dst; in ip6_rt_copy_init()
1141 rt->rt6i_idev = dev ? in6_dev_get(dev) : NULL; in ip6_rt_copy_init()
1142 rt->rt6i_flags = res->fib6_flags; in ip6_rt_copy_init()
1144 rt->rt6i_gateway = nh->fib_nh_gw6; in ip6_rt_copy_init()
1145 rt->rt6i_flags |= RTF_GATEWAY; in ip6_rt_copy_init()
1147 rt6_set_from(rt, f6i); in ip6_rt_copy_init()
1149 rt->rt6i_src = f6i->fib6_src; in ip6_rt_copy_init()
1173 struct rt6_info *rt = *prt; in ip6_hold_safe() local
1175 if (dst_hold_safe(&rt->dst)) in ip6_hold_safe()
1178 rt = net->ipv6.ip6_null_entry; in ip6_hold_safe()
1179 dst_hold(&rt->dst); in ip6_hold_safe()
1181 rt = NULL; in ip6_hold_safe()
1183 *prt = rt; in ip6_hold_safe()
1222 struct rt6_info *rt; in ip6_pol_route_lookup() local
1242 rt = net->ipv6.ip6_null_entry; in ip6_pol_route_lookup()
1243 dst_hold(&rt->dst); in ip6_pol_route_lookup()
1253 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route_lookup()
1254 if (rt) { in ip6_pol_route_lookup()
1255 if (ip6_hold_safe(net, &rt)) in ip6_pol_route_lookup()
1256 dst_use_noref(&rt->dst, jiffies); in ip6_pol_route_lookup()
1259 rt = ip6_create_rt_rcu(&res); in ip6_pol_route_lookup()
1267 return rt; in ip6_pol_route_lookup()
1309 static int __ip6_ins_rt(struct fib6_info *rt, struct nl_info *info, in __ip6_ins_rt() argument
1315 table = rt->fib6_table; in __ip6_ins_rt()
1317 err = fib6_add(&table->tb6_root, rt, info, extack); in __ip6_ins_rt()
1323 int ip6_ins_rt(struct net *net, struct fib6_info *rt) in ip6_ins_rt() argument
1327 return __ip6_ins_rt(rt, &info, NULL); in ip6_ins_rt()
1336 struct rt6_info *rt; in ip6_rt_cache_alloc() local
1346 rt = ip6_dst_alloc(dev_net(dev), dev, 0); in ip6_rt_cache_alloc()
1347 if (!rt) { in ip6_rt_cache_alloc()
1352 ip6_rt_copy_init(rt, res); in ip6_rt_cache_alloc()
1353 rt->rt6i_flags |= RTF_CACHE; in ip6_rt_cache_alloc()
1354 rt->rt6i_dst.addr = *daddr; in ip6_rt_cache_alloc()
1355 rt->rt6i_dst.plen = 128; in ip6_rt_cache_alloc()
1360 rt->rt6i_flags |= RTF_ANYCAST; in ip6_rt_cache_alloc()
1362 if (rt->rt6i_src.plen && saddr) { in ip6_rt_cache_alloc()
1363 rt->rt6i_src.addr = *saddr; in ip6_rt_cache_alloc()
1364 rt->rt6i_src.plen = 128; in ip6_rt_cache_alloc()
1369 return rt; in ip6_rt_cache_alloc()
1516 /* Helper function to find the cached rt in the hash table
1549 /* Helper function to find the cached rt in the hash table
1787 /* Find cached rt in the hash table inside passed in rt
1809 * rt->rt6i_src is updated.) in rt6_find_cached_rt()
1832 /* Remove the passed in cached rt from the hash table that contains it */
1834 const struct rt6_info *rt) in fib6_nh_remove_exception() argument
1855 src_key = &rt->rt6i_src.addr; in fib6_nh_remove_exception()
1858 &rt->rt6i_dst.addr, in fib6_nh_remove_exception()
1872 struct rt6_info *rt; member
1881 err = fib6_nh_remove_exception(nh, arg->plen, arg->rt); in rt6_nh_remove_exception_rt()
1888 static int rt6_remove_exception_rt(struct rt6_info *rt) in rt6_remove_exception_rt() argument
1892 from = rcu_dereference(rt->from); in rt6_remove_exception_rt()
1893 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_remove_exception_rt()
1898 .rt = rt, in rt6_remove_exception_rt()
1911 from->fib6_src.plen, rt); in rt6_remove_exception_rt()
1914 /* Find rt6_ex which contains the passed in rt cache and
1918 const struct rt6_info *rt) in fib6_nh_update_exception() argument
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()
1963 static void rt6_update_exception_stamp_rt(struct rt6_info *rt) in rt6_update_exception_stamp_rt() argument
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()
1976 .dev = rt->dst.dev, in rt6_update_exception_stamp_rt()
1977 .gw = &rt->rt6i_gateway, in rt6_update_exception_stamp_rt()
1988 fib6_nh_update_exception(fib6_nh, from->fib6_src.plen, rt); in rt6_update_exception_stamp_rt()
1994 struct rt6_info *rt, int mtu) in rt6_mtu_change_route_allowed() argument
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()
2031 * route), the metrics of its rt->from have already in rt6_exceptions_update_pmtu()
2082 struct rt6_info *rt = rt6_ex->rt6i; in rt6_age_examine_exception() local
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()
2092 RT6_TRACE("aging clone %p\n", rt); in rt6_age_examine_exception()
2096 } else if (time_after(jiffies, rt->dst.expires)) { in rt6_age_examine_exception()
2097 RT6_TRACE("purging expired route %p\n", rt); in rt6_age_examine_exception()
2102 if (rt->rt6i_flags & RTF_GATEWAY) { in rt6_age_examine_exception()
2106 neigh = __ipv6_neigh_lookup_noref(rt->dst.dev, &rt->rt6i_gateway); in rt6_age_examine_exception()
2112 rt); in rt6_age_examine_exception()
2216 struct rt6_info *rt = NULL; in ip6_pol_route() local
2236 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route()
2237 if (rt) { in ip6_pol_route()
2246 rt = ip6_rt_cache_alloc(&res, &fl6->daddr, NULL); in ip6_pol_route()
2248 if (rt) { in ip6_pol_route()
2254 rt6_uncached_list_add(rt); in ip6_pol_route()
2258 return rt; in ip6_pol_route()
2263 rt = rt6_get_pcpu_route(&res); in ip6_pol_route()
2265 if (!rt) in ip6_pol_route()
2266 rt = rt6_make_pcpu_route(net, &res); in ip6_pol_route()
2271 if (!rt) in ip6_pol_route()
2272 rt = net->ipv6.ip6_null_entry; in ip6_pol_route()
2274 ip6_hold_safe(net, &rt); in ip6_pol_route()
2277 return rt; in ip6_pol_route()
2538 struct rt6_info *rt, *ort = (struct rt6_info *) dst_orig; in ip6_blackhole_route() local
2542 rt = dst_alloc(&ip6_dst_blackhole_ops, loopback_dev, 1, in ip6_blackhole_route()
2544 if (rt) { in ip6_blackhole_route()
2545 rt6_info_init(rt); in ip6_blackhole_route()
2548 new = &rt->dst; in ip6_blackhole_route()
2555 rt->rt6i_idev = in6_dev_get(loopback_dev); in ip6_blackhole_route()
2556 rt->rt6i_gateway = ort->rt6i_gateway; in ip6_blackhole_route()
2557 rt->rt6i_flags = ort->rt6i_flags & ~RTF_PCPU; in ip6_blackhole_route()
2559 memcpy(&rt->rt6i_dst, &ort->rt6i_dst, sizeof(struct rt6key)); in ip6_blackhole_route()
2561 memcpy(&rt->rt6i_src, &ort->rt6i_src, sizeof(struct rt6key)); in ip6_blackhole_route()
2586 static struct dst_entry *rt6_check(struct rt6_info *rt, in rt6_check() argument
2596 if (rt6_check_expired(rt)) in rt6_check()
2599 return &rt->dst; in rt6_check()
2602 static struct dst_entry *rt6_dst_from_check(struct rt6_info *rt, in rt6_dst_from_check() argument
2606 if (!__rt6_check_expired(rt) && in rt6_dst_from_check()
2607 rt->dst.obsolete == DST_OBSOLETE_FORCE_CHK && in rt6_dst_from_check()
2609 return &rt->dst; in rt6_dst_from_check()
2618 struct rt6_info *rt; in ip6_dst_check() local
2620 rt = container_of(dst, struct rt6_info, dst); in ip6_dst_check()
2622 if (rt->sernum) in ip6_dst_check()
2623 return rt6_is_valid(rt) ? dst : NULL; in ip6_dst_check()
2632 from = rcu_dereference(rt->from); in ip6_dst_check()
2634 if (from && (rt->rt6i_flags & RTF_PCPU || in ip6_dst_check()
2635 unlikely(!list_empty(&rt->rt6i_uncached)))) in ip6_dst_check()
2636 dst_ret = rt6_dst_from_check(rt, from, cookie); in ip6_dst_check()
2638 dst_ret = rt6_check(rt, from, cookie); in ip6_dst_check()
2647 struct rt6_info *rt = (struct rt6_info *) dst; in ip6_negative_advice() local
2649 if (rt) { in ip6_negative_advice()
2650 if (rt->rt6i_flags & RTF_CACHE) { in ip6_negative_advice()
2652 if (rt6_check_expired(rt)) { in ip6_negative_advice()
2653 rt6_remove_exception_rt(rt); in ip6_negative_advice()
2667 struct rt6_info *rt; in ip6_link_failure() local
2671 rt = (struct rt6_info *) skb_dst(skb); in ip6_link_failure()
2672 if (rt) { in ip6_link_failure()
2674 if (rt->rt6i_flags & RTF_CACHE) { in ip6_link_failure()
2675 rt6_remove_exception_rt(rt); in ip6_link_failure()
2680 from = rcu_dereference(rt->from); in ip6_link_failure()
2683 if (fn && (rt->rt6i_flags & RTF_DEFAULT)) in ip6_link_failure()
2707 static void rt6_do_update_pmtu(struct rt6_info *rt, u32 mtu) in rt6_do_update_pmtu() argument
2709 struct net *net = dev_net(rt->dst.dev); in rt6_do_update_pmtu()
2711 dst_metric_set(&rt->dst, RTAX_MTU, mtu); in rt6_do_update_pmtu()
2712 rt->rt6i_flags |= RTF_MODIFIED; in rt6_do_update_pmtu()
2713 rt6_update_expires(rt, net->ipv6.sysctl.ip6_rt_mtu_expires); in rt6_do_update_pmtu()
2716 static bool rt6_cache_allowed_for_pmtu(const struct rt6_info *rt) in rt6_cache_allowed_for_pmtu() argument
2718 return !(rt->rt6i_flags & RTF_CACHE) && in rt6_cache_allowed_for_pmtu()
2719 (rt->rt6i_flags & RTF_PCPU || rcu_access_pointer(rt->from)); in rt6_cache_allowed_for_pmtu()
2935 struct fib6_info *rt; in __ip6_route_redirect() local
2958 res.f6i = rt; in __ip6_route_redirect()
2959 if (fib6_check_expired(rt)) in __ip6_route_redirect()
2961 if (rt->fib6_flags & RTF_REJECT) in __ip6_route_redirect()
2963 if (unlikely(rt->nh)) { in __ip6_route_redirect()
2964 if (nexthop_is_blackhole(rt->nh)) in __ip6_route_redirect()
2967 if (nexthop_for_each_fib6_nh(rt->nh, in __ip6_route_redirect()
2972 res.nh = rt->fib6_nh; in __ip6_route_redirect()
2979 if (!rt) in __ip6_route_redirect()
2980 rt = net->ipv6.fib6_null_entry; in __ip6_route_redirect()
2981 else if (rt->fib6_flags & RTF_REJECT) { in __ip6_route_redirect()
2986 if (rt == net->ipv6.fib6_null_entry) { in __ip6_route_redirect()
2992 res.f6i = rt; in __ip6_route_redirect()
2993 res.nh = rt->fib6_nh; in __ip6_route_redirect()
3130 struct rt6_info *rt; in ip6_mtu_from_fib6() local
3139 rt = rt6_find_cached_rt(res, daddr, saddr); in ip6_mtu_from_fib6()
3140 if (unlikely(rt)) { in ip6_mtu_from_fib6()
3141 mtu = dst_metric_raw(&rt->dst, RTAX_MTU); in ip6_mtu_from_fib6()
3160 struct rt6_info *rt; in icmp6_dst_alloc() local
3167 rt = ip6_dst_alloc(net, dev, 0); in icmp6_dst_alloc()
3168 if (unlikely(!rt)) { in icmp6_dst_alloc()
3174 rt->dst.input = ip6_input; in icmp6_dst_alloc()
3175 rt->dst.output = ip6_output; in icmp6_dst_alloc()
3176 rt->rt6i_gateway = fl6->daddr; in icmp6_dst_alloc()
3177 rt->rt6i_dst.addr = fl6->daddr; in icmp6_dst_alloc()
3178 rt->rt6i_dst.plen = 128; in icmp6_dst_alloc()
3179 rt->rt6i_idev = idev; in icmp6_dst_alloc()
3180 dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 0); in icmp6_dst_alloc()
3185 rt6_uncached_list_add(rt); in icmp6_dst_alloc()
3188 dst = xfrm_lookup(net, &rt->dst, flowi6_to_flowi(fl6), NULL, 0); in icmp6_dst_alloc()
3585 struct fib6_info *rt = NULL; in ip6_route_info_create() local
3651 rt = fib6_info_alloc(gfp_flags, !nh); in ip6_route_info_create()
3652 if (!rt) in ip6_route_info_create()
3655 rt->fib6_metrics = ip_fib_metrics_init(net, cfg->fc_mx, cfg->fc_mx_len, in ip6_route_info_create()
3657 if (IS_ERR(rt->fib6_metrics)) { in ip6_route_info_create()
3658 err = PTR_ERR(rt->fib6_metrics); in ip6_route_info_create()
3660 rt->fib6_metrics = (struct dst_metrics *)&dst_default_metrics; in ip6_route_info_create()
3665 rt->dst_nocount = true; in ip6_route_info_create()
3668 fib6_set_expires(rt, jiffies + in ip6_route_info_create()
3671 fib6_clean_expires(rt); in ip6_route_info_create()
3675 rt->fib6_protocol = cfg->fc_protocol; in ip6_route_info_create()
3677 rt->fib6_table = table; in ip6_route_info_create()
3678 rt->fib6_metric = cfg->fc_metric; in ip6_route_info_create()
3679 rt->fib6_type = cfg->fc_type ? : RTN_UNICAST; in ip6_route_info_create()
3680 rt->fib6_flags = cfg->fc_flags & ~RTF_GATEWAY; in ip6_route_info_create()
3682 ipv6_addr_prefix(&rt->fib6_dst.addr, &cfg->fc_dst, cfg->fc_dst_len); in ip6_route_info_create()
3683 rt->fib6_dst.plen = cfg->fc_dst_len; in ip6_route_info_create()
3686 ipv6_addr_prefix(&rt->fib6_src.addr, &cfg->fc_src, cfg->fc_src_len); in ip6_route_info_create()
3687 rt->fib6_src.plen = cfg->fc_src_len; in ip6_route_info_create()
3690 if (rt->fib6_src.plen) { in ip6_route_info_create()
3698 rt->nh = nh; in ip6_route_info_create()
3699 fib6_nh = nexthop_fib6_nh(rt->nh); in ip6_route_info_create()
3701 err = fib6_nh_init(net, rt->fib6_nh, cfg, gfp_flags, extack); in ip6_route_info_create()
3705 fib6_nh = rt->fib6_nh; in ip6_route_info_create()
3711 if (fib6_is_reject(cfg->fc_flags, rt->fib6_nh->fib_nh_dev, in ip6_route_info_create()
3713 rt->fib6_flags = RTF_REJECT | RTF_NONEXTHOP; in ip6_route_info_create()
3724 rt->fib6_prefsrc.addr = cfg->fc_prefsrc; in ip6_route_info_create()
3725 rt->fib6_prefsrc.plen = 128; in ip6_route_info_create()
3727 rt->fib6_prefsrc.plen = 0; in ip6_route_info_create()
3729 return rt; in ip6_route_info_create()
3731 fib6_info_release(rt); in ip6_route_info_create()
3738 struct fib6_info *rt; in ip6_route_add() local
3741 rt = ip6_route_info_create(cfg, gfp_flags, extack); in ip6_route_add()
3742 if (IS_ERR(rt)) in ip6_route_add()
3743 return PTR_ERR(rt); in ip6_route_add()
3745 err = __ip6_ins_rt(rt, &cfg->fc_nlinfo, extack); in ip6_route_add()
3746 fib6_info_release(rt); in ip6_route_add()
3751 static int __ip6_del_rt(struct fib6_info *rt, struct nl_info *info) in __ip6_del_rt() argument
3757 if (rt == net->ipv6.fib6_null_entry) { in __ip6_del_rt()
3762 table = rt->fib6_table; in __ip6_del_rt()
3764 err = fib6_del(rt, info); in __ip6_del_rt()
3768 fib6_info_release(rt); in __ip6_del_rt()
3772 int ip6_del_rt(struct net *net, struct fib6_info *rt, bool skip_notify) in ip6_del_rt() argument
3779 return __ip6_del_rt(rt, &info); in ip6_del_rt()
3782 static int __ip6_del_rt_siblings(struct fib6_info *rt, struct fib6_config *cfg) in __ip6_del_rt_siblings() argument
3790 if (rt == net->ipv6.fib6_null_entry) in __ip6_del_rt_siblings()
3792 table = rt->fib6_table; in __ip6_del_rt_siblings()
3795 if (rt->fib6_nsiblings && cfg->fc_delete_all_nh) { in __ip6_del_rt_siblings()
3800 skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any()); in __ip6_del_rt_siblings()
3804 if (rt6_fill_node(net, skb, rt, NULL, in __ip6_del_rt_siblings()
3813 /* 'rt' points to the first sibling route. If it is not the in __ip6_del_rt_siblings()
3819 fn = rcu_dereference_protected(rt->fib6_node, in __ip6_del_rt_siblings()
3821 if (rcu_access_pointer(fn->leaf) == rt) { in __ip6_del_rt_siblings()
3824 last_sibling = list_last_entry(&rt->fib6_siblings, in __ip6_del_rt_siblings()
3836 rt, rt->fib6_nsiblings, in __ip6_del_rt_siblings()
3840 &rt->fib6_siblings, in __ip6_del_rt_siblings()
3848 err = fib6_del(rt, info); in __ip6_del_rt_siblings()
3852 fib6_info_release(rt); in __ip6_del_rt_siblings()
3861 static int __ip6_del_cached_rt(struct rt6_info *rt, struct fib6_config *cfg) in __ip6_del_cached_rt() argument
3865 if (cfg->fc_ifindex && rt->dst.dev->ifindex != cfg->fc_ifindex) in __ip6_del_cached_rt()
3869 !ipv6_addr_equal(&cfg->fc_gateway, &rt->rt6i_gateway)) in __ip6_del_cached_rt()
3872 rc = rt6_remove_exception_rt(rt); in __ip6_del_cached_rt()
3877 static int ip6_del_cached_rt(struct fib6_config *cfg, struct fib6_info *rt, in ip6_del_cached_rt() argument
3881 .f6i = rt, in ip6_del_cached_rt()
3921 struct fib6_info *rt; in ip6_route_del() local
3942 if (rt->nh && cfg->fc_nh_id && in ip6_route_del()
3943 rt->nh->id != cfg->fc_nh_id) in ip6_route_del()
3949 if (rt->nh) { in ip6_route_del()
3950 rc = ip6_del_cached_rt_nh(cfg, rt); in ip6_route_del()
3954 nh = rt->fib6_nh; in ip6_route_del()
3955 rc = ip6_del_cached_rt(cfg, rt, nh); in ip6_route_del()
3964 if (cfg->fc_metric && cfg->fc_metric != rt->fib6_metric) in ip6_route_del()
3967 cfg->fc_protocol != rt->fib6_protocol) in ip6_route_del()
3970 if (rt->nh) { in ip6_route_del()
3971 if (!fib6_info_hold_safe(rt)) in ip6_route_del()
3975 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
3980 nh = rt->fib6_nh; in ip6_route_del()
3988 if (!fib6_info_hold_safe(rt)) in ip6_route_del()
3994 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
3996 return __ip6_del_rt_siblings(rt, cfg); in ip6_route_del()
4007 struct rt6_info *rt, *nrt = NULL; in rt6_do_redirect() local
4066 rt = (struct rt6_info *) dst; in rt6_do_redirect()
4067 if (rt->rt6i_flags & RTF_REJECT) { in rt6_do_redirect()
4076 dst_confirm_neigh(&rt->dst, &ipv6_hdr(skb)->saddr); in rt6_do_redirect()
4094 res.f6i = rcu_dereference(rt->from); in rt6_do_redirect()
4101 .gw = &rt->rt6i_gateway, in rt6_do_redirect()
4135 netevent.old = &rt->dst; in rt6_do_redirect()
4155 struct fib6_info *rt = NULL; in rt6_get_route_info() local
4169 if (rt->nh) in rt6_get_route_info()
4171 if (rt->fib6_nh->fib_nh_dev->ifindex != ifindex) in rt6_get_route_info()
4173 if (!(rt->fib6_flags & RTF_ROUTEINFO) || in rt6_get_route_info()
4174 !rt->fib6_nh->fib_nh_gw_family) in rt6_get_route_info()
4176 if (!ipv6_addr_equal(&rt->fib6_nh->fib_nh_gw6, gwaddr)) in rt6_get_route_info()
4178 if (!fib6_info_hold_safe(rt)) in rt6_get_route_info()
4184 return rt; in rt6_get_route_info()
4225 struct fib6_info *rt; in rt6_get_dflt_router() local
4237 if (rt->nh) in rt6_get_dflt_router()
4240 nh = rt->fib6_nh; in rt6_get_dflt_router()
4242 ((rt->fib6_flags & (RTF_ADDRCONF | RTF_DEFAULT)) == (RTF_ADDRCONF | RTF_DEFAULT)) && in rt6_get_dflt_router()
4246 if (rt && !fib6_info_hold_safe(rt)) in rt6_get_dflt_router()
4247 rt = NULL; in rt6_get_dflt_router()
4249 return rt; in rt6_get_dflt_router()
4286 struct fib6_info *rt; in __rt6_purge_dflt_routers() local
4291 struct net_device *dev = fib6_info_nh_dev(rt); in __rt6_purge_dflt_routers()
4294 if (rt->fib6_flags & (RTF_DEFAULT | RTF_ADDRCONF) && in __rt6_purge_dflt_routers()
4296 fib6_info_hold_safe(rt)) { in __rt6_purge_dflt_routers()
4298 ip6_del_rt(net, rt, false); in __rt6_purge_dflt_routers()
4477 static int fib6_remove_prefsrc(struct fib6_info *rt, void *arg) in fib6_remove_prefsrc() argument
4483 if (!rt->nh && in fib6_remove_prefsrc()
4484 ((void *)rt->fib6_nh->fib_nh_dev == dev || !dev) && in fib6_remove_prefsrc()
4485 rt != net->ipv6.fib6_null_entry && in fib6_remove_prefsrc()
4486 ipv6_addr_equal(addr, &rt->fib6_prefsrc.addr)) { in fib6_remove_prefsrc()
4489 rt->fib6_prefsrc.plen = 0; in fib6_remove_prefsrc()
4509 static int fib6_clean_tohost(struct fib6_info *rt, void *arg) in fib6_clean_tohost() argument
4515 if (rt->nh) in fib6_clean_tohost()
4518 nh = rt->fib6_nh; in fib6_clean_tohost()
4519 if (((rt->fib6_flags & RTF_RA_ROUTER) == RTF_RA_ROUTER) && in fib6_clean_tohost()
4545 static struct fib6_info *rt6_multipath_first_sibling(const struct fib6_info *rt) in rt6_multipath_first_sibling() argument
4550 fn = rcu_dereference_protected(rt->fib6_node, in rt6_multipath_first_sibling()
4551 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4553 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4555 if (iter->fib6_metric == rt->fib6_metric && in rt6_multipath_first_sibling()
4559 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4566 static bool rt6_is_dead(const struct fib6_info *rt) in rt6_is_dead() argument
4568 if (rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD || in rt6_is_dead()
4569 (rt->fib6_nh->fib_nh_flags & RTNH_F_LINKDOWN && in rt6_is_dead()
4570 ip6_ignore_linkdown(rt->fib6_nh->fib_nh_dev))) in rt6_is_dead()
4576 static int rt6_multipath_total_weight(const struct fib6_info *rt) in rt6_multipath_total_weight() argument
4581 if (!rt6_is_dead(rt)) in rt6_multipath_total_weight()
4582 total += rt->fib6_nh->fib_nh_weight; in rt6_multipath_total_weight()
4584 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) { in rt6_multipath_total_weight()
4592 static void rt6_upper_bound_set(struct fib6_info *rt, int *weight, int total) in rt6_upper_bound_set() argument
4596 if (!rt6_is_dead(rt)) { in rt6_upper_bound_set()
4597 *weight += rt->fib6_nh->fib_nh_weight; in rt6_upper_bound_set()
4601 atomic_set(&rt->fib6_nh->fib_nh_upper_bound, upper_bound); in rt6_upper_bound_set()
4604 static void rt6_multipath_upper_bound_set(struct fib6_info *rt, int total) in rt6_multipath_upper_bound_set() argument
4609 rt6_upper_bound_set(rt, &weight, total); in rt6_multipath_upper_bound_set()
4611 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_upper_bound_set()
4615 void rt6_multipath_rebalance(struct fib6_info *rt) in rt6_multipath_rebalance() argument
4624 if (!rt->fib6_nsiblings || rt->should_flush) in rt6_multipath_rebalance()
4631 first = rt6_multipath_first_sibling(rt); in rt6_multipath_rebalance()
4639 static int fib6_ifup(struct fib6_info *rt, void *p_arg) in fib6_ifup() argument
4644 if (rt != net->ipv6.fib6_null_entry && !rt->nh && in fib6_ifup()
4645 rt->fib6_nh->fib_nh_dev == arg->dev) { in fib6_ifup()
4646 rt->fib6_nh->fib_nh_flags &= ~arg->nh_flags; in fib6_ifup()
4647 fib6_update_sernum_upto_root(net, rt); in fib6_ifup()
4648 rt6_multipath_rebalance(rt); in fib6_ifup()
4670 static bool rt6_multipath_uses_dev(const struct fib6_info *rt, in rt6_multipath_uses_dev() argument
4675 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_uses_dev()
4677 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_uses_dev()
4684 static void rt6_multipath_flush(struct fib6_info *rt) in rt6_multipath_flush() argument
4688 rt->should_flush = 1; in rt6_multipath_flush()
4689 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_flush()
4693 static unsigned int rt6_multipath_dead_count(const struct fib6_info *rt, in rt6_multipath_dead_count() argument
4699 if (rt->fib6_nh->fib_nh_dev == down_dev || in rt6_multipath_dead_count()
4700 rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD) in rt6_multipath_dead_count()
4702 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_dead_count()
4710 static void rt6_multipath_nh_flags_set(struct fib6_info *rt, in rt6_multipath_nh_flags_set() argument
4716 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_nh_flags_set()
4717 rt->fib6_nh->fib_nh_flags |= nh_flags; in rt6_multipath_nh_flags_set()
4718 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_nh_flags_set()
4723 /* called with write lock held for table with rt */
4724 static int fib6_ifdown(struct fib6_info *rt, void *p_arg) in fib6_ifdown() argument
4730 if (rt == net->ipv6.fib6_null_entry || rt->nh) in fib6_ifdown()
4735 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4737 if (rt->should_flush) in fib6_ifdown()
4739 if (!rt->fib6_nsiblings) in fib6_ifdown()
4740 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4741 if (rt6_multipath_uses_dev(rt, dev)) { in fib6_ifdown()
4744 count = rt6_multipath_dead_count(rt, dev); in fib6_ifdown()
4745 if (rt->fib6_nsiblings + 1 == count) { in fib6_ifdown()
4746 rt6_multipath_flush(rt); in fib6_ifdown()
4749 rt6_multipath_nh_flags_set(rt, dev, RTNH_F_DEAD | in fib6_ifdown()
4751 fib6_update_sernum(net, rt); in fib6_ifdown()
4752 rt6_multipath_rebalance(rt); in fib6_ifdown()
4756 if (rt->fib6_nh->fib_nh_dev != dev || in fib6_ifdown()
4757 rt->fib6_flags & (RTF_LOCAL | RTF_ANYCAST)) in fib6_ifdown()
4759 rt->fib6_nh->fib_nh_flags |= RTNH_F_LINKDOWN; in fib6_ifdown()
4760 rt6_multipath_rebalance(rt); in fib6_ifdown()
5031 struct fib6_info *rt, in ip6_route_info_append() argument
5039 if (rt6_duplicate_nexthop(nh->fib6_info, rt)) in ip6_route_info_append()
5046 nh->fib6_info = rt; in ip6_route_info_append()
5053 static void ip6_route_mpath_notify(struct fib6_info *rt, in ip6_route_mpath_notify() argument
5058 /* if this is an APPEND route, then rt points to the first route in ip6_route_mpath_notify()
5065 rt = list_first_entry(&rt_last->fib6_siblings, in ip6_route_mpath_notify()
5070 if (rt) in ip6_route_mpath_notify()
5071 inet6_rt_notify(RTM_NEWROUTE, rt, info, nlflags); in ip6_route_mpath_notify()
5074 static bool ip6_route_mpath_should_notify(const struct fib6_info *rt) in ip6_route_mpath_should_notify() argument
5076 bool rt_can_ecmp = rt6_qualify_for_ecmp(rt); in ip6_route_mpath_should_notify()
5082 fn = rcu_dereference(rt->fib6_node); in ip6_route_mpath_should_notify()
5090 if (rt == leaf || in ip6_route_mpath_should_notify()
5091 (rt_can_ecmp && rt->fib6_metric == leaf->fib6_metric && in ip6_route_mpath_should_notify()
5107 struct fib6_info *rt; in ip6_route_multipath_add() local
5150 rt = ip6_route_info_create(&r_cfg, GFP_KERNEL, extack); in ip6_route_multipath_add()
5151 if (IS_ERR(rt)) { in ip6_route_multipath_add()
5152 err = PTR_ERR(rt); in ip6_route_multipath_add()
5153 rt = NULL; in ip6_route_multipath_add()
5156 if (!rt6_qualify_for_ecmp(rt)) { in ip6_route_multipath_add()
5160 fib6_info_release(rt); in ip6_route_multipath_add()
5164 rt->fib6_nh->fib_nh_weight = rtnh->rtnh_hops + 1; in ip6_route_multipath_add()
5167 rt, &r_cfg); in ip6_route_multipath_add()
5169 fib6_info_release(rt); in ip6_route_multipath_add()
5453 struct fib6_info *rt, struct dst_entry *dst, in rt6_fill_node() argument
5475 rt6_dst = &rt->fib6_dst; in rt6_fill_node()
5476 rt6_src = &rt->fib6_src; in rt6_fill_node()
5477 rt6_flags = rt->fib6_flags; in rt6_fill_node()
5485 if (rt->fib6_table) in rt6_fill_node()
5486 table = rt->fib6_table->tb6_id; in rt6_fill_node()
5493 rtm->rtm_type = rt->fib6_type; in rt6_fill_node()
5496 rtm->rtm_protocol = rt->fib6_protocol; in rt6_fill_node()
5532 if (ip6_route_get_saddr(net, rt, dest, 0, &saddr_buf) == 0 && in rt6_fill_node()
5537 if (rt->fib6_prefsrc.plen) { in rt6_fill_node()
5539 saddr_buf = rt->fib6_prefsrc.addr; in rt6_fill_node()
5544 pmetrics = dst ? dst_metrics_ptr(dst) : rt->fib6_metrics->metrics; in rt6_fill_node()
5548 if (nla_put_u32(skb, RTA_PRIORITY, rt->fib6_metric)) in rt6_fill_node()
5561 } else if (rt->fib6_nsiblings) { in rt6_fill_node()
5569 if (fib_add_nexthop(skb, &rt->fib6_nh->nh_common, in rt6_fill_node()
5570 rt->fib6_nh->fib_nh_weight, AF_INET6) < 0) in rt6_fill_node()
5574 &rt->fib6_siblings, fib6_siblings) { in rt6_fill_node()
5582 } else if (rt->nh) { in rt6_fill_node()
5583 if (nla_put_u32(skb, RTA_NH_ID, rt->nh->id)) in rt6_fill_node()
5586 if (nexthop_is_blackhole(rt->nh)) in rt6_fill_node()
5590 rt6_fill_node_nexthop(skb, rt->nh, &nh_flags) < 0) in rt6_fill_node()
5595 if (fib_nexthop_info(skb, &rt->fib6_nh->nh_common, AF_INET6, in rt6_fill_node()
5603 expires = dst ? dst->expires : rt->expires; in rt6_fill_node()
5608 if (rt->offload) in rt6_fill_node()
5610 if (rt->trap) in rt6_fill_node()
5668 struct fib6_info *rt; member
5709 err = rt6_fill_node(dump->net, dump->skb, w->rt, in rt6_nh_dump_exceptions()
5726 int rt6_dump_route(struct fib6_info *rt, void *p_arg, unsigned int skip) in rt6_dump_route() argument
5734 if (rt == net->ipv6.fib6_null_entry) in rt6_dump_route()
5738 !(rt->fib6_flags & RTF_PREFIX_RT)) { in rt6_dump_route()
5743 ((filter->rt_type && rt->fib6_type != filter->rt_type) || in rt6_dump_route()
5744 (filter->dev && !fib6_info_uses_dev(rt, filter->dev)) || in rt6_dump_route()
5745 (filter->protocol && rt->fib6_protocol != filter->protocol))) { in rt6_dump_route()
5758 if (rt6_fill_node(net, arg->skb, rt, NULL, NULL, NULL, in rt6_dump_route()
5770 .rt = rt, in rt6_dump_route()
5777 if (rt->nh) { in rt6_dump_route()
5778 err = nexthop_for_each_fib6_nh(rt->nh, in rt6_dump_route()
5782 err = rt6_nh_dump_exceptions(rt->fib6_nh, &w); in rt6_dump_route()
5868 struct rt6_info *rt; in inet6_rtm_getroute() local
5954 rt = container_of(dst, struct rt6_info, dst); in inet6_rtm_getroute()
5955 if (rt->dst.error) { in inet6_rtm_getroute()
5956 err = rt->dst.error; in inet6_rtm_getroute()
5957 ip6_rt_put(rt); in inet6_rtm_getroute()
5961 if (rt == net->ipv6.ip6_null_entry) { in inet6_rtm_getroute()
5962 err = rt->dst.error; in inet6_rtm_getroute()
5963 ip6_rt_put(rt); in inet6_rtm_getroute()
5969 ip6_rt_put(rt); in inet6_rtm_getroute()
5974 skb_dst_set(skb, &rt->dst); in inet6_rtm_getroute()
5977 from = rcu_dereference(rt->from); in inet6_rtm_getroute()
6004 void inet6_rt_notify(int event, struct fib6_info *rt, struct nl_info *info, in inet6_rt_notify() argument
6015 skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any()); in inet6_rt_notify()
6019 err = rt6_fill_node(net, skb, rt, NULL, NULL, NULL, 0, in inet6_rt_notify()
6035 void fib6_rt_update(struct net *net, struct fib6_info *rt, in fib6_rt_update() argument
6045 call_fib6_entry_notifiers(net, FIB_EVENT_ENTRY_REPLACE, rt, NULL); in fib6_rt_update()
6047 skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any()); in fib6_rt_update()
6051 err = rt6_fill_node(net, skb, rt, NULL, NULL, NULL, 0, in fib6_rt_update()
6427 DEFINE_BPF_ITER_FUNC(ipv6_route, struct bpf_iter_meta *meta, struct fib6_info *rt)
6443 { offsetof(struct bpf_iter__ipv6_route, rt),