Lines Matching full:rt
110 struct fib6_info *rt, struct dst_entry *dst,
138 void rt6_uncached_list_add(struct rt6_info *rt) in rt6_uncached_list_add() argument
142 rt->rt6i_uncached_list = ul; in rt6_uncached_list_add()
145 list_add_tail(&rt->rt6i_uncached, &ul->head); in rt6_uncached_list_add()
149 void rt6_uncached_list_del(struct rt6_info *rt) in rt6_uncached_list_del() argument
151 if (!list_empty(&rt->rt6i_uncached)) { in rt6_uncached_list_del()
152 struct uncached_list *ul = rt->rt6i_uncached_list; in rt6_uncached_list_del()
155 list_del_init(&rt->rt6i_uncached); in rt6_uncached_list_del()
166 struct rt6_info *rt, *safe; in rt6_uncached_list_flush_dev() local
172 list_for_each_entry_safe(rt, safe, &ul->head, rt6i_uncached) { in rt6_uncached_list_flush_dev()
173 struct inet6_dev *rt_idev = rt->rt6i_idev; in rt6_uncached_list_flush_dev()
174 struct net_device *rt_dev = rt->dst.dev; in rt6_uncached_list_flush_dev()
178 rt->rt6i_idev = in6_dev_get(blackhole_netdev); in rt6_uncached_list_flush_dev()
184 rt->dst.dev = blackhole_netdev; in rt6_uncached_list_flush_dev()
186 &rt->dst.dev_tracker, in rt6_uncached_list_flush_dev()
191 list_move(&rt->rt6i_uncached, in rt6_uncached_list_flush_dev()
229 const struct rt6_info *rt = container_of(dst, struct rt6_info, dst); in ip6_dst_neigh_lookup() local
231 return ip6_neigh_lookup(rt6_nexthop(rt, &in6addr_any), in ip6_dst_neigh_lookup()
238 struct rt6_info *rt = (struct rt6_info *)dst; in ip6_confirm_neigh() local
240 daddr = choose_neigh_daddr(rt6_nexthop(rt, &in6addr_any), NULL, daddr); in ip6_confirm_neigh()
334 static void rt6_info_init(struct rt6_info *rt) in rt6_info_init() argument
336 memset_after(rt, 0, dst); in rt6_info_init()
337 INIT_LIST_HEAD(&rt->rt6i_uncached); in rt6_info_init()
344 struct rt6_info *rt = dst_alloc(&net->ipv6.ip6_dst_ops, dev, in ip6_dst_alloc() local
347 if (rt) { in ip6_dst_alloc()
348 rt6_info_init(rt); in ip6_dst_alloc()
352 return rt; in ip6_dst_alloc()
358 struct rt6_info *rt = (struct rt6_info *)dst; in ip6_dst_destroy() local
363 rt6_uncached_list_del(rt); in ip6_dst_destroy()
365 idev = rt->rt6i_idev; in ip6_dst_destroy()
367 rt->rt6i_idev = NULL; in ip6_dst_destroy()
371 from = xchg((__force struct fib6_info **)&rt->from, NULL); in ip6_dst_destroy()
378 struct rt6_info *rt = (struct rt6_info *)dst; in ip6_dst_ifdown() local
379 struct inet6_dev *idev = rt->rt6i_idev; in ip6_dst_ifdown()
385 rt->rt6i_idev = blackhole_idev; in ip6_dst_ifdown()
391 static bool __rt6_check_expired(const struct rt6_info *rt) in __rt6_check_expired() argument
393 if (rt->rt6i_flags & RTF_EXPIRES) in __rt6_check_expired()
394 return time_after(jiffies, rt->dst.expires); in __rt6_check_expired()
399 static bool rt6_check_expired(const struct rt6_info *rt) in rt6_check_expired() argument
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()
935 struct fib6_info *rt; in rt6_route_rcv() local
973 rt = rt6_get_dflt_router(net, gwaddr, dev); in rt6_route_rcv()
975 rt = rt6_get_route_info(net, prefix, rinfo->prefix_len, in rt6_route_rcv()
978 if (rt && !lifetime) { in rt6_route_rcv()
979 ip6_del_rt(net, rt, false); in rt6_route_rcv()
980 rt = NULL; in rt6_route_rcv()
983 if (!rt && lifetime) in rt6_route_rcv()
984 rt = rt6_add_route_info(net, prefix, rinfo->prefix_len, gwaddr, in rt6_route_rcv()
986 else if (rt) in rt6_route_rcv()
987 rt->fib6_flags = RTF_ROUTEINFO | in rt6_route_rcv()
988 (rt->fib6_flags & ~RTF_PREF_MASK) | RTF_PREF(pref); in rt6_route_rcv()
990 if (rt) { in rt6_route_rcv()
992 fib6_clean_expires(rt); in rt6_route_rcv()
994 fib6_set_expires(rt, jiffies + HZ * lifetime); in rt6_route_rcv()
996 fib6_info_release(rt); in rt6_route_rcv()
1049 static unsigned short fib6_info_dst_flags(struct fib6_info *rt) in fib6_info_dst_flags() argument
1053 if (rt->dst_nocount) in fib6_info_dst_flags()
1055 if (rt->dst_nopolicy) in fib6_info_dst_flags()
1061 static void ip6_rt_init_dst_reject(struct rt6_info *rt, u8 fib6_type) in ip6_rt_init_dst_reject() argument
1063 rt->dst.error = ip6_rt_type_to_error(fib6_type); in ip6_rt_init_dst_reject()
1067 rt->dst.output = dst_discard_out; in ip6_rt_init_dst_reject()
1068 rt->dst.input = dst_discard; in ip6_rt_init_dst_reject()
1071 rt->dst.output = ip6_pkt_prohibit_out; in ip6_rt_init_dst_reject()
1072 rt->dst.input = ip6_pkt_prohibit; in ip6_rt_init_dst_reject()
1077 rt->dst.output = ip6_pkt_discard_out; in ip6_rt_init_dst_reject()
1078 rt->dst.input = ip6_pkt_discard; in ip6_rt_init_dst_reject()
1083 static void ip6_rt_init_dst(struct rt6_info *rt, const struct fib6_result *res) in ip6_rt_init_dst() argument
1088 ip6_rt_init_dst_reject(rt, res->fib6_type); in ip6_rt_init_dst()
1092 rt->dst.error = 0; in ip6_rt_init_dst()
1093 rt->dst.output = ip6_output; in ip6_rt_init_dst()
1096 rt->dst.input = ip6_input; in ip6_rt_init_dst()
1098 rt->dst.input = ip6_mc_input; in ip6_rt_init_dst()
1100 rt->dst.input = ip6_forward; in ip6_rt_init_dst()
1104 rt->dst.lwtstate = lwtstate_get(res->nh->fib_nh_lws); in ip6_rt_init_dst()
1105 lwtunnel_set_redirect(&rt->dst); in ip6_rt_init_dst()
1108 rt->dst.lastuse = jiffies; in ip6_rt_init_dst()
1112 static void rt6_set_from(struct rt6_info *rt, struct fib6_info *from) in rt6_set_from() argument
1114 rt->rt6i_flags &= ~RTF_EXPIRES; in rt6_set_from()
1115 rcu_assign_pointer(rt->from, from); in rt6_set_from()
1116 ip_dst_init_metrics(&rt->dst, from->fib6_metrics); in rt6_set_from()
1120 static void ip6_rt_copy_init(struct rt6_info *rt, const struct fib6_result *res) in ip6_rt_copy_init() argument
1126 ip6_rt_init_dst(rt, res); in ip6_rt_copy_init()
1128 rt->rt6i_dst = f6i->fib6_dst; in ip6_rt_copy_init()
1129 rt->rt6i_idev = dev ? in6_dev_get(dev) : NULL; in ip6_rt_copy_init()
1130 rt->rt6i_flags = res->fib6_flags; in ip6_rt_copy_init()
1132 rt->rt6i_gateway = nh->fib_nh_gw6; in ip6_rt_copy_init()
1133 rt->rt6i_flags |= RTF_GATEWAY; in ip6_rt_copy_init()
1135 rt6_set_from(rt, f6i); in ip6_rt_copy_init()
1137 rt->rt6i_src = f6i->fib6_src; in ip6_rt_copy_init()
1161 struct rt6_info *rt = *prt; in ip6_hold_safe() local
1163 if (dst_hold_safe(&rt->dst)) in ip6_hold_safe()
1166 rt = net->ipv6.ip6_null_entry; in ip6_hold_safe()
1167 dst_hold(&rt->dst); in ip6_hold_safe()
1169 rt = NULL; in ip6_hold_safe()
1171 *prt = rt; in ip6_hold_safe()
1210 struct rt6_info *rt; in ip6_pol_route_lookup() local
1227 rt = net->ipv6.ip6_null_entry; in ip6_pol_route_lookup()
1228 dst_hold(&rt->dst); in ip6_pol_route_lookup()
1238 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route_lookup()
1239 if (rt) { in ip6_pol_route_lookup()
1240 if (ip6_hold_safe(net, &rt)) in ip6_pol_route_lookup()
1241 dst_use_noref(&rt->dst, jiffies); in ip6_pol_route_lookup()
1244 rt = ip6_create_rt_rcu(&res); in ip6_pol_route_lookup()
1252 return rt; in ip6_pol_route_lookup()
1294 static int __ip6_ins_rt(struct fib6_info *rt, struct nl_info *info, in __ip6_ins_rt() argument
1300 table = rt->fib6_table; in __ip6_ins_rt()
1302 err = fib6_add(&table->tb6_root, rt, info, extack); in __ip6_ins_rt()
1308 int ip6_ins_rt(struct net *net, struct fib6_info *rt) in ip6_ins_rt() argument
1312 return __ip6_ins_rt(rt, &info, NULL); in ip6_ins_rt()
1321 struct rt6_info *rt; in ip6_rt_cache_alloc() local
1331 rt = ip6_dst_alloc(dev_net(dev), dev, 0); in ip6_rt_cache_alloc()
1332 if (!rt) { in ip6_rt_cache_alloc()
1337 ip6_rt_copy_init(rt, res); in ip6_rt_cache_alloc()
1338 rt->rt6i_flags |= RTF_CACHE; in ip6_rt_cache_alloc()
1339 rt->rt6i_dst.addr = *daddr; in ip6_rt_cache_alloc()
1340 rt->rt6i_dst.plen = 128; in ip6_rt_cache_alloc()
1345 rt->rt6i_flags |= RTF_ANYCAST; in ip6_rt_cache_alloc()
1347 if (rt->rt6i_src.plen && saddr) { in ip6_rt_cache_alloc()
1348 rt->rt6i_src.addr = *saddr; in ip6_rt_cache_alloc()
1349 rt->rt6i_src.plen = 128; in ip6_rt_cache_alloc()
1354 return rt; in ip6_rt_cache_alloc()
1508 /* Helper function to find the cached rt in the hash table
1541 /* Helper function to find the cached rt in the hash table
1782 /* Find cached rt in the hash table inside passed in rt
1804 * rt->rt6i_src is updated.) in rt6_find_cached_rt()
1827 /* Remove the passed in cached rt from the hash table that contains it */
1829 const struct rt6_info *rt) in fib6_nh_remove_exception() argument
1850 src_key = &rt->rt6i_src.addr; in fib6_nh_remove_exception()
1853 &rt->rt6i_dst.addr, in fib6_nh_remove_exception()
1867 struct rt6_info *rt; member
1876 err = fib6_nh_remove_exception(nh, arg->plen, arg->rt); in rt6_nh_remove_exception_rt()
1883 static int rt6_remove_exception_rt(struct rt6_info *rt) in rt6_remove_exception_rt() argument
1887 from = rcu_dereference(rt->from); in rt6_remove_exception_rt()
1888 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_remove_exception_rt()
1893 .rt = rt, in rt6_remove_exception_rt()
1906 from->fib6_src.plen, rt); in rt6_remove_exception_rt()
1909 /* Find rt6_ex which contains the passed in rt cache and
1913 const struct rt6_info *rt) in fib6_nh_update_exception() argument
1928 src_key = &rt->rt6i_src.addr; in fib6_nh_update_exception()
1930 rt6_ex = __rt6_find_exception_rcu(&bucket, &rt->rt6i_dst.addr, src_key); in fib6_nh_update_exception()
1958 static void rt6_update_exception_stamp_rt(struct rt6_info *rt) in rt6_update_exception_stamp_rt() argument
1965 from = rcu_dereference(rt->from); in rt6_update_exception_stamp_rt()
1966 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_update_exception_stamp_rt()
1971 .dev = rt->dst.dev, in rt6_update_exception_stamp_rt()
1972 .gw = &rt->rt6i_gateway, in rt6_update_exception_stamp_rt()
1983 fib6_nh_update_exception(fib6_nh, from->fib6_src.plen, rt); in rt6_update_exception_stamp_rt()
1989 struct rt6_info *rt, int mtu) in rt6_mtu_change_route_allowed() argument
2001 if (dst_mtu(&rt->dst) >= mtu) in rt6_mtu_change_route_allowed()
2004 if (dst_mtu(&rt->dst) == idev->cnf.mtu6) in rt6_mtu_change_route_allowed()
2026 * route), the metrics of its rt->from have already in rt6_exceptions_update_pmtu()
2077 struct rt6_info *rt = rt6_ex->rt6i; in rt6_age_examine_exception() local
2085 if (!(rt->rt6i_flags & RTF_EXPIRES)) { in rt6_age_examine_exception()
2086 if (time_after_eq(now, rt->dst.lastuse + gc_args->timeout)) { in rt6_age_examine_exception()
2087 RT6_TRACE("aging clone %p\n", rt); in rt6_age_examine_exception()
2091 } else if (time_after(jiffies, rt->dst.expires)) { in rt6_age_examine_exception()
2092 RT6_TRACE("purging expired route %p\n", rt); in rt6_age_examine_exception()
2097 if (rt->rt6i_flags & RTF_GATEWAY) { in rt6_age_examine_exception()
2100 neigh = __ipv6_neigh_lookup_noref(rt->dst.dev, &rt->rt6i_gateway); in rt6_age_examine_exception()
2104 rt); in rt6_age_examine_exception()
2205 struct rt6_info *rt = NULL; in ip6_pol_route() local
2225 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route()
2226 if (rt) { in ip6_pol_route()
2235 rt = ip6_rt_cache_alloc(&res, &fl6->daddr, NULL); in ip6_pol_route()
2237 if (rt) { in ip6_pol_route()
2243 rt6_uncached_list_add(rt); in ip6_pol_route()
2246 return rt; in ip6_pol_route()
2251 rt = rt6_get_pcpu_route(&res); in ip6_pol_route()
2253 if (!rt) in ip6_pol_route()
2254 rt = rt6_make_pcpu_route(net, &res); in ip6_pol_route()
2259 if (!rt) in ip6_pol_route()
2260 rt = net->ipv6.ip6_null_entry; in ip6_pol_route()
2262 ip6_hold_safe(net, &rt); in ip6_pol_route()
2265 return rt; in ip6_pol_route()
2653 struct rt6_info *rt, *ort = (struct rt6_info *) dst_orig; in ip6_blackhole_route() local
2657 rt = dst_alloc(&ip6_dst_blackhole_ops, loopback_dev, 1, in ip6_blackhole_route()
2659 if (rt) { in ip6_blackhole_route()
2660 rt6_info_init(rt); in ip6_blackhole_route()
2663 new = &rt->dst; in ip6_blackhole_route()
2670 rt->rt6i_idev = in6_dev_get(loopback_dev); in ip6_blackhole_route()
2671 rt->rt6i_gateway = ort->rt6i_gateway; in ip6_blackhole_route()
2672 rt->rt6i_flags = ort->rt6i_flags & ~RTF_PCPU; in ip6_blackhole_route()
2674 memcpy(&rt->rt6i_dst, &ort->rt6i_dst, sizeof(struct rt6key)); in ip6_blackhole_route()
2676 memcpy(&rt->rt6i_src, &ort->rt6i_src, sizeof(struct rt6key)); in ip6_blackhole_route()
2701 static struct dst_entry *rt6_check(struct rt6_info *rt, in rt6_check() argument
2711 if (rt6_check_expired(rt)) in rt6_check()
2714 return &rt->dst; in rt6_check()
2717 static struct dst_entry *rt6_dst_from_check(struct rt6_info *rt, in rt6_dst_from_check() argument
2721 if (!__rt6_check_expired(rt) && in rt6_dst_from_check()
2722 rt->dst.obsolete == DST_OBSOLETE_FORCE_CHK && in rt6_dst_from_check()
2724 return &rt->dst; in rt6_dst_from_check()
2734 struct rt6_info *rt; in ip6_dst_check() local
2736 rt = container_of(dst, struct rt6_info, dst); in ip6_dst_check()
2738 if (rt->sernum) in ip6_dst_check()
2739 return rt6_is_valid(rt) ? dst : NULL; in ip6_dst_check()
2748 from = rcu_dereference(rt->from); in ip6_dst_check()
2750 if (from && (rt->rt6i_flags & RTF_PCPU || in ip6_dst_check()
2751 unlikely(!list_empty(&rt->rt6i_uncached)))) in ip6_dst_check()
2752 dst_ret = rt6_dst_from_check(rt, from, cookie); in ip6_dst_check()
2754 dst_ret = rt6_check(rt, from, cookie); in ip6_dst_check()
2764 struct rt6_info *rt = (struct rt6_info *) dst; in ip6_negative_advice() local
2766 if (rt) { in ip6_negative_advice()
2767 if (rt->rt6i_flags & RTF_CACHE) { in ip6_negative_advice()
2769 if (rt6_check_expired(rt)) { in ip6_negative_advice()
2770 rt6_remove_exception_rt(rt); in ip6_negative_advice()
2784 struct rt6_info *rt; in ip6_link_failure() local
2788 rt = (struct rt6_info *) skb_dst(skb); in ip6_link_failure()
2789 if (rt) { in ip6_link_failure()
2791 if (rt->rt6i_flags & RTF_CACHE) { in ip6_link_failure()
2792 rt6_remove_exception_rt(rt); in ip6_link_failure()
2797 from = rcu_dereference(rt->from); in ip6_link_failure()
2800 if (fn && (rt->rt6i_flags & RTF_DEFAULT)) in ip6_link_failure()
2824 static void rt6_do_update_pmtu(struct rt6_info *rt, u32 mtu) in rt6_do_update_pmtu() argument
2826 struct net *net = dev_net(rt->dst.dev); in rt6_do_update_pmtu()
2828 dst_metric_set(&rt->dst, RTAX_MTU, mtu); in rt6_do_update_pmtu()
2829 rt->rt6i_flags |= RTF_MODIFIED; in rt6_do_update_pmtu()
2830 rt6_update_expires(rt, net->ipv6.sysctl.ip6_rt_mtu_expires); in rt6_do_update_pmtu()
2833 static bool rt6_cache_allowed_for_pmtu(const struct rt6_info *rt) in rt6_cache_allowed_for_pmtu() argument
2835 return !(rt->rt6i_flags & RTF_CACHE) && in rt6_cache_allowed_for_pmtu()
2836 (rt->rt6i_flags & RTF_PCPU || rcu_access_pointer(rt->from)); in rt6_cache_allowed_for_pmtu()
3052 struct fib6_info *rt; in __ip6_route_redirect() local
3069 res.f6i = rt; in __ip6_route_redirect()
3070 if (fib6_check_expired(rt)) in __ip6_route_redirect()
3072 if (rt->fib6_flags & RTF_REJECT) in __ip6_route_redirect()
3074 if (unlikely(rt->nh)) { in __ip6_route_redirect()
3075 if (nexthop_is_blackhole(rt->nh)) in __ip6_route_redirect()
3078 if (nexthop_for_each_fib6_nh(rt->nh, in __ip6_route_redirect()
3083 res.nh = rt->fib6_nh; in __ip6_route_redirect()
3090 if (!rt) in __ip6_route_redirect()
3091 rt = net->ipv6.fib6_null_entry; in __ip6_route_redirect()
3092 else if (rt->fib6_flags & RTF_REJECT) { in __ip6_route_redirect()
3097 if (rt == net->ipv6.fib6_null_entry) { in __ip6_route_redirect()
3103 res.f6i = rt; in __ip6_route_redirect()
3104 res.nh = rt->fib6_nh; in __ip6_route_redirect()
3224 struct rt6_info *rt; in ip6_mtu_from_fib6() local
3233 rt = rt6_find_cached_rt(res, daddr, saddr); in ip6_mtu_from_fib6()
3234 if (unlikely(rt)) { in ip6_mtu_from_fib6()
3235 mtu = dst_metric_raw(&rt->dst, RTAX_MTU); in ip6_mtu_from_fib6()
3254 struct rt6_info *rt; in icmp6_dst_alloc() local
3261 rt = ip6_dst_alloc(net, dev, 0); in icmp6_dst_alloc()
3262 if (unlikely(!rt)) { in icmp6_dst_alloc()
3268 rt->dst.input = ip6_input; in icmp6_dst_alloc()
3269 rt->dst.output = ip6_output; in icmp6_dst_alloc()
3270 rt->rt6i_gateway = fl6->daddr; in icmp6_dst_alloc()
3271 rt->rt6i_dst.addr = fl6->daddr; in icmp6_dst_alloc()
3272 rt->rt6i_dst.plen = 128; in icmp6_dst_alloc()
3273 rt->rt6i_idev = idev; in icmp6_dst_alloc()
3274 dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 0); in icmp6_dst_alloc()
3279 rt6_uncached_list_add(rt); in icmp6_dst_alloc()
3281 dst = xfrm_lookup(net, &rt->dst, flowi6_to_flowi(fl6), NULL, 0); in icmp6_dst_alloc()
3683 struct fib6_info *rt = NULL; in ip6_route_info_create() local
3749 rt = fib6_info_alloc(gfp_flags, !nh); in ip6_route_info_create()
3750 if (!rt) in ip6_route_info_create()
3753 rt->fib6_metrics = ip_fib_metrics_init(net, cfg->fc_mx, cfg->fc_mx_len, in ip6_route_info_create()
3755 if (IS_ERR(rt->fib6_metrics)) { in ip6_route_info_create()
3756 err = PTR_ERR(rt->fib6_metrics); in ip6_route_info_create()
3758 rt->fib6_metrics = (struct dst_metrics *)&dst_default_metrics; in ip6_route_info_create()
3763 rt->dst_nocount = true; in ip6_route_info_create()
3766 fib6_set_expires(rt, jiffies + in ip6_route_info_create()
3769 fib6_clean_expires(rt); in ip6_route_info_create()
3773 rt->fib6_protocol = cfg->fc_protocol; in ip6_route_info_create()
3775 rt->fib6_table = table; in ip6_route_info_create()
3776 rt->fib6_metric = cfg->fc_metric; in ip6_route_info_create()
3777 rt->fib6_type = cfg->fc_type ? : RTN_UNICAST; in ip6_route_info_create()
3778 rt->fib6_flags = cfg->fc_flags & ~RTF_GATEWAY; in ip6_route_info_create()
3780 ipv6_addr_prefix(&rt->fib6_dst.addr, &cfg->fc_dst, cfg->fc_dst_len); in ip6_route_info_create()
3781 rt->fib6_dst.plen = cfg->fc_dst_len; in ip6_route_info_create()
3784 ipv6_addr_prefix(&rt->fib6_src.addr, &cfg->fc_src, cfg->fc_src_len); in ip6_route_info_create()
3785 rt->fib6_src.plen = cfg->fc_src_len; in ip6_route_info_create()
3788 if (rt->fib6_src.plen) { in ip6_route_info_create()
3796 rt->nh = nh; in ip6_route_info_create()
3797 fib6_nh = nexthop_fib6_nh(rt->nh); in ip6_route_info_create()
3799 err = fib6_nh_init(net, rt->fib6_nh, cfg, gfp_flags, extack); in ip6_route_info_create()
3803 fib6_nh = rt->fib6_nh; in ip6_route_info_create()
3809 if (fib6_is_reject(cfg->fc_flags, rt->fib6_nh->fib_nh_dev, in ip6_route_info_create()
3811 rt->fib6_flags = RTF_REJECT | RTF_NONEXTHOP; in ip6_route_info_create()
3822 rt->fib6_prefsrc.addr = cfg->fc_prefsrc; in ip6_route_info_create()
3823 rt->fib6_prefsrc.plen = 128; in ip6_route_info_create()
3825 rt->fib6_prefsrc.plen = 0; in ip6_route_info_create()
3827 return rt; in ip6_route_info_create()
3829 fib6_info_release(rt); in ip6_route_info_create()
3832 ip_fib_metrics_put(rt->fib6_metrics); in ip6_route_info_create()
3833 kfree(rt); in ip6_route_info_create()
3840 struct fib6_info *rt; in ip6_route_add() local
3843 rt = ip6_route_info_create(cfg, gfp_flags, extack); in ip6_route_add()
3844 if (IS_ERR(rt)) in ip6_route_add()
3845 return PTR_ERR(rt); in ip6_route_add()
3847 err = __ip6_ins_rt(rt, &cfg->fc_nlinfo, extack); in ip6_route_add()
3848 fib6_info_release(rt); in ip6_route_add()
3853 static int __ip6_del_rt(struct fib6_info *rt, struct nl_info *info) in __ip6_del_rt() argument
3859 if (rt == net->ipv6.fib6_null_entry) { in __ip6_del_rt()
3864 table = rt->fib6_table; in __ip6_del_rt()
3866 err = fib6_del(rt, info); in __ip6_del_rt()
3870 fib6_info_release(rt); in __ip6_del_rt()
3874 int ip6_del_rt(struct net *net, struct fib6_info *rt, bool skip_notify) in ip6_del_rt() argument
3881 return __ip6_del_rt(rt, &info); in ip6_del_rt()
3884 static int __ip6_del_rt_siblings(struct fib6_info *rt, struct fib6_config *cfg) in __ip6_del_rt_siblings() argument
3892 if (rt == net->ipv6.fib6_null_entry) in __ip6_del_rt_siblings()
3894 table = rt->fib6_table; in __ip6_del_rt_siblings()
3897 if (rt->fib6_nsiblings && cfg->fc_delete_all_nh) { in __ip6_del_rt_siblings()
3902 skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any()); in __ip6_del_rt_siblings()
3906 if (rt6_fill_node(net, skb, rt, NULL, in __ip6_del_rt_siblings()
3915 /* 'rt' points to the first sibling route. If it is not the in __ip6_del_rt_siblings()
3921 fn = rcu_dereference_protected(rt->fib6_node, in __ip6_del_rt_siblings()
3923 if (rcu_access_pointer(fn->leaf) == rt) { in __ip6_del_rt_siblings()
3926 last_sibling = list_last_entry(&rt->fib6_siblings, in __ip6_del_rt_siblings()
3938 rt, rt->fib6_nsiblings, in __ip6_del_rt_siblings()
3942 &rt->fib6_siblings, in __ip6_del_rt_siblings()
3950 err = fib6_del(rt, info); in __ip6_del_rt_siblings()
3954 fib6_info_release(rt); in __ip6_del_rt_siblings()
3963 static int __ip6_del_cached_rt(struct rt6_info *rt, struct fib6_config *cfg) in __ip6_del_cached_rt() argument
3967 if (cfg->fc_ifindex && rt->dst.dev->ifindex != cfg->fc_ifindex) in __ip6_del_cached_rt()
3971 !ipv6_addr_equal(&cfg->fc_gateway, &rt->rt6i_gateway)) in __ip6_del_cached_rt()
3974 rc = rt6_remove_exception_rt(rt); in __ip6_del_cached_rt()
3979 static int ip6_del_cached_rt(struct fib6_config *cfg, struct fib6_info *rt, in ip6_del_cached_rt() argument
3983 .f6i = rt, in ip6_del_cached_rt()
4023 struct fib6_info *rt; in ip6_route_del() local
4044 if (rt->nh && cfg->fc_nh_id && in ip6_route_del()
4045 rt->nh->id != cfg->fc_nh_id) in ip6_route_del()
4051 if (rt->nh) { in ip6_route_del()
4052 rc = ip6_del_cached_rt_nh(cfg, rt); in ip6_route_del()
4056 nh = rt->fib6_nh; in ip6_route_del()
4057 rc = ip6_del_cached_rt(cfg, rt, nh); in ip6_route_del()
4066 if (cfg->fc_metric && cfg->fc_metric != rt->fib6_metric) in ip6_route_del()
4069 cfg->fc_protocol != rt->fib6_protocol) in ip6_route_del()
4072 if (rt->nh) { in ip6_route_del()
4073 if (!fib6_info_hold_safe(rt)) in ip6_route_del()
4077 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
4082 nh = rt->fib6_nh; in ip6_route_del()
4090 if (!fib6_info_hold_safe(rt)) in ip6_route_del()
4096 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
4098 return __ip6_del_rt_siblings(rt, cfg); in ip6_route_del()
4109 struct rt6_info *rt, *nrt = NULL; in rt6_do_redirect() local
4168 rt = (struct rt6_info *) dst; in rt6_do_redirect()
4169 if (rt->rt6i_flags & RTF_REJECT) { in rt6_do_redirect()
4178 dst_confirm_neigh(&rt->dst, &ipv6_hdr(skb)->saddr); in rt6_do_redirect()
4196 res.f6i = rcu_dereference(rt->from); in rt6_do_redirect()
4203 .gw = &rt->rt6i_gateway, in rt6_do_redirect()
4237 netevent.old = &rt->dst; in rt6_do_redirect()
4257 struct fib6_info *rt = NULL; in rt6_get_route_info() local
4271 if (rt->nh) in rt6_get_route_info()
4273 if (rt->fib6_nh->fib_nh_dev->ifindex != ifindex) in rt6_get_route_info()
4275 if (!(rt->fib6_flags & RTF_ROUTEINFO) || in rt6_get_route_info()
4276 !rt->fib6_nh->fib_nh_gw_family) in rt6_get_route_info()
4278 if (!ipv6_addr_equal(&rt->fib6_nh->fib_nh_gw6, gwaddr)) in rt6_get_route_info()
4280 if (!fib6_info_hold_safe(rt)) in rt6_get_route_info()
4286 return rt; in rt6_get_route_info()
4327 struct fib6_info *rt; in rt6_get_dflt_router() local
4339 if (rt->nh) in rt6_get_dflt_router()
4342 nh = rt->fib6_nh; in rt6_get_dflt_router()
4344 ((rt->fib6_flags & (RTF_ADDRCONF | RTF_DEFAULT)) == (RTF_ADDRCONF | RTF_DEFAULT)) && in rt6_get_dflt_router()
4348 if (rt && !fib6_info_hold_safe(rt)) in rt6_get_dflt_router()
4349 rt = NULL; in rt6_get_dflt_router()
4351 return rt; in rt6_get_dflt_router()
4389 struct fib6_info *rt; in __rt6_purge_dflt_routers() local
4394 struct net_device *dev = fib6_info_nh_dev(rt); in __rt6_purge_dflt_routers()
4397 if (rt->fib6_flags & (RTF_DEFAULT | RTF_ADDRCONF) && in __rt6_purge_dflt_routers()
4399 fib6_info_hold_safe(rt)) { in __rt6_purge_dflt_routers()
4401 ip6_del_rt(net, rt, false); in __rt6_purge_dflt_routers()
4591 static int fib6_remove_prefsrc(struct fib6_info *rt, void *arg) in fib6_remove_prefsrc() argument
4597 if (!rt->nh && in fib6_remove_prefsrc()
4598 ((void *)rt->fib6_nh->fib_nh_dev == dev || !dev) && in fib6_remove_prefsrc()
4599 rt != net->ipv6.fib6_null_entry && in fib6_remove_prefsrc()
4600 ipv6_addr_equal(addr, &rt->fib6_prefsrc.addr)) { in fib6_remove_prefsrc()
4603 rt->fib6_prefsrc.plen = 0; in fib6_remove_prefsrc()
4623 static int fib6_clean_tohost(struct fib6_info *rt, void *arg) in fib6_clean_tohost() argument
4629 if (rt->nh) in fib6_clean_tohost()
4632 nh = rt->fib6_nh; in fib6_clean_tohost()
4633 if (((rt->fib6_flags & RTF_RA_ROUTER) == RTF_RA_ROUTER) && in fib6_clean_tohost()
4659 static struct fib6_info *rt6_multipath_first_sibling(const struct fib6_info *rt) in rt6_multipath_first_sibling() argument
4664 fn = rcu_dereference_protected(rt->fib6_node, in rt6_multipath_first_sibling()
4665 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4667 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4669 if (iter->fib6_metric == rt->fib6_metric && in rt6_multipath_first_sibling()
4673 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4680 static bool rt6_is_dead(const struct fib6_info *rt) in rt6_is_dead() argument
4682 if (rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD || in rt6_is_dead()
4683 (rt->fib6_nh->fib_nh_flags & RTNH_F_LINKDOWN && in rt6_is_dead()
4684 ip6_ignore_linkdown(rt->fib6_nh->fib_nh_dev))) in rt6_is_dead()
4690 static int rt6_multipath_total_weight(const struct fib6_info *rt) in rt6_multipath_total_weight() argument
4695 if (!rt6_is_dead(rt)) in rt6_multipath_total_weight()
4696 total += rt->fib6_nh->fib_nh_weight; in rt6_multipath_total_weight()
4698 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) { in rt6_multipath_total_weight()
4706 static void rt6_upper_bound_set(struct fib6_info *rt, int *weight, int total) in rt6_upper_bound_set() argument
4710 if (!rt6_is_dead(rt)) { in rt6_upper_bound_set()
4711 *weight += rt->fib6_nh->fib_nh_weight; in rt6_upper_bound_set()
4715 atomic_set(&rt->fib6_nh->fib_nh_upper_bound, upper_bound); in rt6_upper_bound_set()
4718 static void rt6_multipath_upper_bound_set(struct fib6_info *rt, int total) in rt6_multipath_upper_bound_set() argument
4723 rt6_upper_bound_set(rt, &weight, total); in rt6_multipath_upper_bound_set()
4725 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_upper_bound_set()
4729 void rt6_multipath_rebalance(struct fib6_info *rt) in rt6_multipath_rebalance() argument
4738 if (!rt->fib6_nsiblings || rt->should_flush) in rt6_multipath_rebalance()
4745 first = rt6_multipath_first_sibling(rt); in rt6_multipath_rebalance()
4753 static int fib6_ifup(struct fib6_info *rt, void *p_arg) in fib6_ifup() argument
4758 if (rt != net->ipv6.fib6_null_entry && !rt->nh && in fib6_ifup()
4759 rt->fib6_nh->fib_nh_dev == arg->dev) { in fib6_ifup()
4760 rt->fib6_nh->fib_nh_flags &= ~arg->nh_flags; in fib6_ifup()
4761 fib6_update_sernum_upto_root(net, rt); in fib6_ifup()
4762 rt6_multipath_rebalance(rt); in fib6_ifup()
4784 static bool rt6_multipath_uses_dev(const struct fib6_info *rt, in rt6_multipath_uses_dev() argument
4789 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_uses_dev()
4791 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_uses_dev()
4798 static void rt6_multipath_flush(struct fib6_info *rt) in rt6_multipath_flush() argument
4802 rt->should_flush = 1; in rt6_multipath_flush()
4803 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_flush()
4807 static unsigned int rt6_multipath_dead_count(const struct fib6_info *rt, in rt6_multipath_dead_count() argument
4813 if (rt->fib6_nh->fib_nh_dev == down_dev || in rt6_multipath_dead_count()
4814 rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD) in rt6_multipath_dead_count()
4816 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_dead_count()
4824 static void rt6_multipath_nh_flags_set(struct fib6_info *rt, in rt6_multipath_nh_flags_set() argument
4830 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_nh_flags_set()
4831 rt->fib6_nh->fib_nh_flags |= nh_flags; in rt6_multipath_nh_flags_set()
4832 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_nh_flags_set()
4837 /* called with write lock held for table with rt */
4838 static int fib6_ifdown(struct fib6_info *rt, void *p_arg) in fib6_ifdown() argument
4844 if (rt == net->ipv6.fib6_null_entry || rt->nh) in fib6_ifdown()
4849 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4851 if (rt->should_flush) in fib6_ifdown()
4853 if (!rt->fib6_nsiblings) in fib6_ifdown()
4854 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4855 if (rt6_multipath_uses_dev(rt, dev)) { in fib6_ifdown()
4858 count = rt6_multipath_dead_count(rt, dev); in fib6_ifdown()
4859 if (rt->fib6_nsiblings + 1 == count) { in fib6_ifdown()
4860 rt6_multipath_flush(rt); in fib6_ifdown()
4863 rt6_multipath_nh_flags_set(rt, dev, RTNH_F_DEAD | in fib6_ifdown()
4865 fib6_update_sernum(net, rt); in fib6_ifdown()
4866 rt6_multipath_rebalance(rt); in fib6_ifdown()
4870 if (rt->fib6_nh->fib_nh_dev != dev || in fib6_ifdown()
4871 rt->fib6_flags & (RTF_LOCAL | RTF_ANYCAST)) in fib6_ifdown()
4873 rt->fib6_nh->fib_nh_flags |= RTNH_F_LINKDOWN; in fib6_ifdown()
4874 rt6_multipath_rebalance(rt); in fib6_ifdown()
5151 struct fib6_info *rt, in ip6_route_info_append() argument
5159 if (rt6_duplicate_nexthop(nh->fib6_info, rt)) in ip6_route_info_append()
5166 nh->fib6_info = rt; in ip6_route_info_append()
5173 static void ip6_route_mpath_notify(struct fib6_info *rt, in ip6_route_mpath_notify() argument
5178 /* if this is an APPEND route, then rt points to the first route in ip6_route_mpath_notify()
5185 rt = list_first_entry(&rt_last->fib6_siblings, in ip6_route_mpath_notify()
5190 if (rt) in ip6_route_mpath_notify()
5191 inet6_rt_notify(RTM_NEWROUTE, rt, info, nlflags); in ip6_route_mpath_notify()
5194 static bool ip6_route_mpath_should_notify(const struct fib6_info *rt) in ip6_route_mpath_should_notify() argument
5196 bool rt_can_ecmp = rt6_qualify_for_ecmp(rt); in ip6_route_mpath_should_notify()
5202 fn = rcu_dereference(rt->fib6_node); in ip6_route_mpath_should_notify()
5210 if (rt == leaf || in ip6_route_mpath_should_notify()
5211 (rt_can_ecmp && rt->fib6_metric == leaf->fib6_metric && in ip6_route_mpath_should_notify()
5240 struct fib6_info *rt; in ip6_route_multipath_add() local
5291 rt = ip6_route_info_create(&r_cfg, GFP_KERNEL, extack); in ip6_route_multipath_add()
5292 if (IS_ERR(rt)) { in ip6_route_multipath_add()
5293 err = PTR_ERR(rt); in ip6_route_multipath_add()
5294 rt = NULL; in ip6_route_multipath_add()
5297 if (!rt6_qualify_for_ecmp(rt)) { in ip6_route_multipath_add()
5301 fib6_info_release(rt); in ip6_route_multipath_add()
5305 rt->fib6_nh->fib_nh_weight = rtnh->rtnh_hops + 1; in ip6_route_multipath_add()
5308 rt, &r_cfg); in ip6_route_multipath_add()
5310 fib6_info_release(rt); in ip6_route_multipath_add()
5603 struct fib6_info *rt, struct dst_entry *dst, in rt6_fill_node() argument
5625 rt6_dst = &rt->fib6_dst; in rt6_fill_node()
5626 rt6_src = &rt->fib6_src; in rt6_fill_node()
5627 rt6_flags = rt->fib6_flags; in rt6_fill_node()
5635 if (rt->fib6_table) in rt6_fill_node()
5636 table = rt->fib6_table->tb6_id; in rt6_fill_node()
5643 rtm->rtm_type = rt->fib6_type; in rt6_fill_node()
5646 rtm->rtm_protocol = rt->fib6_protocol; in rt6_fill_node()
5682 if (ip6_route_get_saddr(net, rt, dest, 0, &saddr_buf) == 0 && in rt6_fill_node()
5687 if (rt->fib6_prefsrc.plen) { in rt6_fill_node()
5689 saddr_buf = rt->fib6_prefsrc.addr; in rt6_fill_node()
5694 pmetrics = dst ? dst_metrics_ptr(dst) : rt->fib6_metrics->metrics; in rt6_fill_node()
5698 if (nla_put_u32(skb, RTA_PRIORITY, rt->fib6_metric)) in rt6_fill_node()
5715 } else if (rt->fib6_nsiblings) { in rt6_fill_node()
5723 if (fib_add_nexthop(skb, &rt->fib6_nh->nh_common, in rt6_fill_node()
5724 rt->fib6_nh->fib_nh_weight, AF_INET6, in rt6_fill_node()
5729 &rt->fib6_siblings, fib6_siblings) { in rt6_fill_node()
5737 } else if (rt->nh) { in rt6_fill_node()
5738 if (nla_put_u32(skb, RTA_NH_ID, rt->nh->id)) in rt6_fill_node()
5741 if (nexthop_is_blackhole(rt->nh)) in rt6_fill_node()
5745 rt6_fill_node_nexthop(skb, rt->nh, &nh_flags) < 0) in rt6_fill_node()
5750 if (fib_nexthop_info(skb, &rt->fib6_nh->nh_common, AF_INET6, in rt6_fill_node()
5758 expires = dst ? dst->expires : rt->expires; in rt6_fill_node()
5763 if (READ_ONCE(rt->offload)) in rt6_fill_node()
5765 if (READ_ONCE(rt->trap)) in rt6_fill_node()
5767 if (READ_ONCE(rt->offload_failed)) in rt6_fill_node()
5825 struct fib6_info *rt; member
5866 err = rt6_fill_node(dump->net, dump->skb, w->rt, in rt6_nh_dump_exceptions()
5883 int rt6_dump_route(struct fib6_info *rt, void *p_arg, unsigned int skip) in rt6_dump_route() argument
5891 if (rt == net->ipv6.fib6_null_entry) in rt6_dump_route()
5895 !(rt->fib6_flags & RTF_PREFIX_RT)) { in rt6_dump_route()
5900 ((filter->rt_type && rt->fib6_type != filter->rt_type) || in rt6_dump_route()
5901 (filter->dev && !fib6_info_uses_dev(rt, filter->dev)) || in rt6_dump_route()
5902 (filter->protocol && rt->fib6_protocol != filter->protocol))) { in rt6_dump_route()
5915 if (rt6_fill_node(net, arg->skb, rt, NULL, NULL, NULL, in rt6_dump_route()
5927 .rt = rt, in rt6_dump_route()
5934 if (rt->nh) { in rt6_dump_route()
5935 err = nexthop_for_each_fib6_nh(rt->nh, in rt6_dump_route()
5939 err = rt6_nh_dump_exceptions(rt->fib6_nh, &w); in rt6_dump_route()
6025 struct rt6_info *rt; in inet6_rtm_getroute() local
6111 rt = container_of(dst, struct rt6_info, dst); in inet6_rtm_getroute()
6112 if (rt->dst.error) { in inet6_rtm_getroute()
6113 err = rt->dst.error; in inet6_rtm_getroute()
6114 ip6_rt_put(rt); in inet6_rtm_getroute()
6118 if (rt == net->ipv6.ip6_null_entry) { in inet6_rtm_getroute()
6119 err = rt->dst.error; in inet6_rtm_getroute()
6120 ip6_rt_put(rt); in inet6_rtm_getroute()
6126 ip6_rt_put(rt); in inet6_rtm_getroute()
6131 skb_dst_set(skb, &rt->dst); in inet6_rtm_getroute()
6134 from = rcu_dereference(rt->from); in inet6_rtm_getroute()
6161 void inet6_rt_notify(int event, struct fib6_info *rt, struct nl_info *info, in inet6_rt_notify() argument
6172 skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any()); in inet6_rt_notify()
6176 err = rt6_fill_node(net, skb, rt, NULL, NULL, NULL, 0, in inet6_rt_notify()
6192 void fib6_rt_update(struct net *net, struct fib6_info *rt, in fib6_rt_update() argument
6199 skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any()); in fib6_rt_update()
6203 err = rt6_fill_node(net, skb, rt, NULL, NULL, NULL, 0, in fib6_rt_update()
6638 DEFINE_BPF_ITER_FUNC(ipv6_route, struct bpf_iter_meta *meta, struct fib6_info *rt)
6654 { offsetof(struct bpf_iter__ipv6_route, rt),