Lines Matching refs: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->dst.rt_uncached_list = ul; in rt6_uncached_list_add()
145 list_add_tail(&rt->dst.rt_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->dst.rt_uncached)) { in rt6_uncached_list_del()
152 struct uncached_list *ul = rt->dst.rt_uncached_list; in rt6_uncached_list_del()
155 list_del_init(&rt->dst.rt_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, dst.rt_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->dst.rt_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()
343 struct rt6_info *rt = dst_alloc(&net->ipv6.ip6_dst_ops, dev, in ip6_dst_alloc() local
346 if (rt) { in ip6_dst_alloc()
347 rt6_info_init(rt); in ip6_dst_alloc()
351 return rt; in ip6_dst_alloc()
357 struct rt6_info *rt = (struct rt6_info *)dst; in ip6_dst_destroy() local
362 rt6_uncached_list_del(rt); in ip6_dst_destroy()
364 idev = rt->rt6i_idev; in ip6_dst_destroy()
366 rt->rt6i_idev = NULL; in ip6_dst_destroy()
370 from = xchg((__force struct fib6_info **)&rt->from, NULL); in ip6_dst_destroy()
376 struct rt6_info *rt = (struct rt6_info *)dst; in ip6_dst_ifdown() local
377 struct inet6_dev *idev = rt->rt6i_idev; in ip6_dst_ifdown()
383 rt->rt6i_idev = blackhole_idev; in ip6_dst_ifdown()
389 static bool __rt6_check_expired(const struct rt6_info *rt) in __rt6_check_expired() argument
391 if (rt->rt6i_flags & RTF_EXPIRES) in __rt6_check_expired()
392 return time_after(jiffies, rt->dst.expires); in __rt6_check_expired()
397 static bool rt6_check_expired(const struct rt6_info *rt) in rt6_check_expired() argument
401 from = rcu_dereference(rt->from); in rt6_check_expired()
403 if (rt->rt6i_flags & RTF_EXPIRES) { in rt6_check_expired()
404 if (time_after(jiffies, rt->dst.expires)) in rt6_check_expired()
407 return rt->dst.obsolete != DST_OBSOLETE_FORCE_CHK || in rt6_check_expired()
936 struct fib6_info *rt; in rt6_route_rcv() local
974 rt = rt6_get_dflt_router(net, gwaddr, dev); in rt6_route_rcv()
976 rt = rt6_get_route_info(net, prefix, rinfo->prefix_len, in rt6_route_rcv()
979 if (rt && !lifetime) { in rt6_route_rcv()
980 ip6_del_rt(net, rt, false); in rt6_route_rcv()
981 rt = NULL; in rt6_route_rcv()
984 if (!rt && lifetime) in rt6_route_rcv()
985 rt = rt6_add_route_info(net, prefix, rinfo->prefix_len, gwaddr, in rt6_route_rcv()
987 else if (rt) 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()
991 if (rt) { in rt6_route_rcv()
993 fib6_clean_expires(rt); in rt6_route_rcv()
995 fib6_set_expires(rt, jiffies + HZ * lifetime); in rt6_route_rcv()
997 fib6_info_release(rt); in rt6_route_rcv()
1050 static unsigned short fib6_info_dst_flags(struct fib6_info *rt) in fib6_info_dst_flags() argument
1054 if (rt->dst_nocount) in fib6_info_dst_flags()
1056 if (rt->dst_nopolicy) in fib6_info_dst_flags()
1062 static void ip6_rt_init_dst_reject(struct rt6_info *rt, u8 fib6_type) in ip6_rt_init_dst_reject() argument
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()
1084 static void ip6_rt_init_dst(struct rt6_info *rt, const struct fib6_result *res) in ip6_rt_init_dst() argument
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()
1097 rt->dst.input = ip6_input; 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()
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()
1113 static void rt6_set_from(struct rt6_info *rt, struct fib6_info *from) in rt6_set_from() argument
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()
1121 static void ip6_rt_copy_init(struct rt6_info *rt, const struct fib6_result *res) in ip6_rt_copy_init() argument
1127 ip6_rt_init_dst(rt, res); 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()
1133 rt->rt6i_gateway = nh->fib_nh_gw6; in ip6_rt_copy_init()
1134 rt->rt6i_flags |= RTF_GATEWAY; in ip6_rt_copy_init()
1136 rt6_set_from(rt, f6i); in ip6_rt_copy_init()
1138 rt->rt6i_src = f6i->fib6_src; in ip6_rt_copy_init()
1162 struct rt6_info *rt = *prt; in ip6_hold_safe() local
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()
1170 rt = NULL; in ip6_hold_safe()
1172 *prt = rt; in ip6_hold_safe()
1211 struct rt6_info *rt; in ip6_pol_route_lookup() local
1228 rt = net->ipv6.ip6_null_entry; in ip6_pol_route_lookup()
1229 dst_hold(&rt->dst); in ip6_pol_route_lookup()
1239 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route_lookup()
1240 if (rt) { in ip6_pol_route_lookup()
1241 if (ip6_hold_safe(net, &rt)) in ip6_pol_route_lookup()
1242 dst_use_noref(&rt->dst, jiffies); in ip6_pol_route_lookup()
1245 rt = ip6_create_rt_rcu(&res); in ip6_pol_route_lookup()
1253 return rt; in ip6_pol_route_lookup()
1295 static int __ip6_ins_rt(struct fib6_info *rt, struct nl_info *info, in __ip6_ins_rt() argument
1301 table = rt->fib6_table; in __ip6_ins_rt()
1303 err = fib6_add(&table->tb6_root, rt, info, extack); in __ip6_ins_rt()
1309 int ip6_ins_rt(struct net *net, struct fib6_info *rt) in ip6_ins_rt() argument
1313 return __ip6_ins_rt(rt, &info, NULL); in ip6_ins_rt()
1322 struct rt6_info *rt; in ip6_rt_cache_alloc() local
1332 rt = ip6_dst_alloc(dev_net(dev), dev, 0); in ip6_rt_cache_alloc()
1333 if (!rt) { in ip6_rt_cache_alloc()
1338 ip6_rt_copy_init(rt, res); in ip6_rt_cache_alloc()
1339 rt->rt6i_flags |= RTF_CACHE; in ip6_rt_cache_alloc()
1340 rt->rt6i_dst.addr = *daddr; in ip6_rt_cache_alloc()
1341 rt->rt6i_dst.plen = 128; in ip6_rt_cache_alloc()
1346 rt->rt6i_flags |= RTF_ANYCAST; in ip6_rt_cache_alloc()
1348 if (rt->rt6i_src.plen && saddr) { in ip6_rt_cache_alloc()
1349 rt->rt6i_src.addr = *saddr; in ip6_rt_cache_alloc()
1350 rt->rt6i_src.plen = 128; in ip6_rt_cache_alloc()
1355 return rt; in ip6_rt_cache_alloc()
1830 const struct rt6_info *rt) in fib6_nh_remove_exception() argument
1851 src_key = &rt->rt6i_src.addr; in fib6_nh_remove_exception()
1854 &rt->rt6i_dst.addr, in fib6_nh_remove_exception()
1868 struct rt6_info *rt; member
1877 err = fib6_nh_remove_exception(nh, arg->plen, arg->rt); in rt6_nh_remove_exception_rt()
1884 static int rt6_remove_exception_rt(struct rt6_info *rt) in rt6_remove_exception_rt() argument
1888 from = rcu_dereference(rt->from); in rt6_remove_exception_rt()
1889 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_remove_exception_rt()
1894 .rt = rt, in rt6_remove_exception_rt()
1907 from->fib6_src.plen, rt); in rt6_remove_exception_rt()
1914 const struct rt6_info *rt) in fib6_nh_update_exception() argument
1929 src_key = &rt->rt6i_src.addr; in fib6_nh_update_exception()
1931 rt6_ex = __rt6_find_exception_rcu(&bucket, &rt->rt6i_dst.addr, src_key); in fib6_nh_update_exception()
1959 static void rt6_update_exception_stamp_rt(struct rt6_info *rt) in rt6_update_exception_stamp_rt() argument
1966 from = rcu_dereference(rt->from); in rt6_update_exception_stamp_rt()
1967 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_update_exception_stamp_rt()
1972 .dev = rt->dst.dev, in rt6_update_exception_stamp_rt()
1973 .gw = &rt->rt6i_gateway, in rt6_update_exception_stamp_rt()
1984 fib6_nh_update_exception(fib6_nh, from->fib6_src.plen, rt); in rt6_update_exception_stamp_rt()
1990 struct rt6_info *rt, int mtu) in rt6_mtu_change_route_allowed() argument
2002 if (dst_mtu(&rt->dst) >= mtu) in rt6_mtu_change_route_allowed()
2005 if (dst_mtu(&rt->dst) == idev->cnf.mtu6) in rt6_mtu_change_route_allowed()
2078 struct rt6_info *rt = rt6_ex->rt6i; in rt6_age_examine_exception() local
2086 if (!(rt->rt6i_flags & RTF_EXPIRES)) { in rt6_age_examine_exception()
2087 if (time_after_eq(now, rt->dst.lastuse + gc_args->timeout)) { in rt6_age_examine_exception()
2088 RT6_TRACE("aging clone %p\n", rt); in rt6_age_examine_exception()
2092 } else if (time_after(jiffies, rt->dst.expires)) { in rt6_age_examine_exception()
2093 RT6_TRACE("purging expired route %p\n", rt); in rt6_age_examine_exception()
2098 if (rt->rt6i_flags & RTF_GATEWAY) { in rt6_age_examine_exception()
2101 neigh = __ipv6_neigh_lookup_noref(rt->dst.dev, &rt->rt6i_gateway); in rt6_age_examine_exception()
2105 rt); in rt6_age_examine_exception()
2206 struct rt6_info *rt = NULL; in ip6_pol_route() local
2226 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route()
2227 if (rt) { in ip6_pol_route()
2236 rt = ip6_rt_cache_alloc(&res, &fl6->daddr, NULL); in ip6_pol_route()
2238 if (rt) { in ip6_pol_route()
2244 rt6_uncached_list_add(rt); in ip6_pol_route()
2247 return rt; in ip6_pol_route()
2252 rt = rt6_get_pcpu_route(&res); in ip6_pol_route()
2254 if (!rt) in ip6_pol_route()
2255 rt = rt6_make_pcpu_route(net, &res); in ip6_pol_route()
2260 if (!rt) in ip6_pol_route()
2261 rt = net->ipv6.ip6_null_entry; in ip6_pol_route()
2263 ip6_hold_safe(net, &rt); in ip6_pol_route()
2266 return rt; in ip6_pol_route()
2654 struct rt6_info *rt, *ort = (struct rt6_info *) dst_orig; in ip6_blackhole_route() local
2658 rt = dst_alloc(&ip6_dst_blackhole_ops, loopback_dev, 1, in ip6_blackhole_route()
2660 if (rt) { in ip6_blackhole_route()
2661 rt6_info_init(rt); in ip6_blackhole_route()
2664 new = &rt->dst; in ip6_blackhole_route()
2671 rt->rt6i_idev = in6_dev_get(loopback_dev); in ip6_blackhole_route()
2672 rt->rt6i_gateway = ort->rt6i_gateway; in ip6_blackhole_route()
2673 rt->rt6i_flags = ort->rt6i_flags & ~RTF_PCPU; in ip6_blackhole_route()
2675 memcpy(&rt->rt6i_dst, &ort->rt6i_dst, sizeof(struct rt6key)); in ip6_blackhole_route()
2677 memcpy(&rt->rt6i_src, &ort->rt6i_src, sizeof(struct rt6key)); in ip6_blackhole_route()
2702 static struct dst_entry *rt6_check(struct rt6_info *rt, in rt6_check() argument
2712 if (rt6_check_expired(rt)) in rt6_check()
2715 return &rt->dst; in rt6_check()
2718 static struct dst_entry *rt6_dst_from_check(struct rt6_info *rt, in rt6_dst_from_check() argument
2722 if (!__rt6_check_expired(rt) && in rt6_dst_from_check()
2723 rt->dst.obsolete == DST_OBSOLETE_FORCE_CHK && in rt6_dst_from_check()
2725 return &rt->dst; in rt6_dst_from_check()
2735 struct rt6_info *rt; in ip6_dst_check() local
2737 rt = container_of(dst, struct rt6_info, dst); in ip6_dst_check()
2739 if (rt->sernum) in ip6_dst_check()
2740 return rt6_is_valid(rt) ? dst : NULL; in ip6_dst_check()
2749 from = rcu_dereference(rt->from); in ip6_dst_check()
2751 if (from && (rt->rt6i_flags & RTF_PCPU || in ip6_dst_check()
2752 unlikely(!list_empty(&rt->dst.rt_uncached)))) in ip6_dst_check()
2753 dst_ret = rt6_dst_from_check(rt, from, cookie); in ip6_dst_check()
2755 dst_ret = rt6_check(rt, from, cookie); in ip6_dst_check()
2765 struct rt6_info *rt = (struct rt6_info *) dst; in ip6_negative_advice() local
2767 if (rt) { in ip6_negative_advice()
2768 if (rt->rt6i_flags & RTF_CACHE) { in ip6_negative_advice()
2770 if (rt6_check_expired(rt)) { in ip6_negative_advice()
2771 rt6_remove_exception_rt(rt); in ip6_negative_advice()
2785 struct rt6_info *rt; in ip6_link_failure() local
2789 rt = (struct rt6_info *) skb_dst(skb); in ip6_link_failure()
2790 if (rt) { in ip6_link_failure()
2792 if (rt->rt6i_flags & RTF_CACHE) { in ip6_link_failure()
2793 rt6_remove_exception_rt(rt); in ip6_link_failure()
2798 from = rcu_dereference(rt->from); in ip6_link_failure()
2801 if (fn && (rt->rt6i_flags & RTF_DEFAULT)) in ip6_link_failure()
2825 static void rt6_do_update_pmtu(struct rt6_info *rt, u32 mtu) in rt6_do_update_pmtu() argument
2827 struct net *net = dev_net(rt->dst.dev); in rt6_do_update_pmtu()
2829 dst_metric_set(&rt->dst, RTAX_MTU, mtu); in rt6_do_update_pmtu()
2830 rt->rt6i_flags |= RTF_MODIFIED; in rt6_do_update_pmtu()
2831 rt6_update_expires(rt, net->ipv6.sysctl.ip6_rt_mtu_expires); in rt6_do_update_pmtu()
2834 static bool rt6_cache_allowed_for_pmtu(const struct rt6_info *rt) in rt6_cache_allowed_for_pmtu() argument
2836 return !(rt->rt6i_flags & RTF_CACHE) && in rt6_cache_allowed_for_pmtu()
2837 (rt->rt6i_flags & RTF_PCPU || rcu_access_pointer(rt->from)); in rt6_cache_allowed_for_pmtu()
3054 struct fib6_info *rt; in __ip6_route_redirect() local
3071 res.f6i = rt; in __ip6_route_redirect()
3072 if (fib6_check_expired(rt)) in __ip6_route_redirect()
3074 if (rt->fib6_flags & RTF_REJECT) in __ip6_route_redirect()
3076 if (unlikely(rt->nh)) { in __ip6_route_redirect()
3077 if (nexthop_is_blackhole(rt->nh)) in __ip6_route_redirect()
3080 if (nexthop_for_each_fib6_nh(rt->nh, in __ip6_route_redirect()
3085 res.nh = rt->fib6_nh; in __ip6_route_redirect()
3092 if (!rt) in __ip6_route_redirect()
3093 rt = net->ipv6.fib6_null_entry; in __ip6_route_redirect()
3094 else if (rt->fib6_flags & RTF_REJECT) { in __ip6_route_redirect()
3099 if (rt == net->ipv6.fib6_null_entry) { in __ip6_route_redirect()
3105 res.f6i = rt; in __ip6_route_redirect()
3106 res.nh = rt->fib6_nh; in __ip6_route_redirect()
3226 struct rt6_info *rt; in ip6_mtu_from_fib6() local
3235 rt = rt6_find_cached_rt(res, daddr, saddr); in ip6_mtu_from_fib6()
3236 if (unlikely(rt)) { in ip6_mtu_from_fib6()
3237 mtu = dst_metric_raw(&rt->dst, RTAX_MTU); in ip6_mtu_from_fib6()
3256 struct rt6_info *rt; in icmp6_dst_alloc() local
3263 rt = ip6_dst_alloc(net, dev, 0); in icmp6_dst_alloc()
3264 if (unlikely(!rt)) { in icmp6_dst_alloc()
3270 rt->dst.input = ip6_input; in icmp6_dst_alloc()
3271 rt->dst.output = ip6_output; in icmp6_dst_alloc()
3272 rt->rt6i_gateway = fl6->daddr; in icmp6_dst_alloc()
3273 rt->rt6i_dst.addr = fl6->daddr; in icmp6_dst_alloc()
3274 rt->rt6i_dst.plen = 128; in icmp6_dst_alloc()
3275 rt->rt6i_idev = idev; in icmp6_dst_alloc()
3276 dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 0); in icmp6_dst_alloc()
3281 rt6_uncached_list_add(rt); in icmp6_dst_alloc()
3283 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()
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
4596 if (!rt->nh && in fib6_remove_prefsrc()
4597 rt != net->ipv6.fib6_null_entry && in fib6_remove_prefsrc()
4598 ipv6_addr_equal(addr, &rt->fib6_prefsrc.addr) && in fib6_remove_prefsrc()
4599 !ipv6_chk_addr(net, addr, rt->fib6_nh->fib_nh_dev, 0)) { in fib6_remove_prefsrc()
4602 rt->fib6_prefsrc.plen = 0; in fib6_remove_prefsrc()
4621 static int fib6_clean_tohost(struct fib6_info *rt, void *arg) in fib6_clean_tohost() argument
4627 if (rt->nh) in fib6_clean_tohost()
4630 nh = rt->fib6_nh; in fib6_clean_tohost()
4631 if (((rt->fib6_flags & RTF_RA_ROUTER) == RTF_RA_ROUTER) && in fib6_clean_tohost()
4657 static struct fib6_info *rt6_multipath_first_sibling(const struct fib6_info *rt) in rt6_multipath_first_sibling() argument
4662 fn = rcu_dereference_protected(rt->fib6_node, in rt6_multipath_first_sibling()
4663 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4665 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4667 if (iter->fib6_metric == rt->fib6_metric && in rt6_multipath_first_sibling()
4671 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4678 static bool rt6_is_dead(const struct fib6_info *rt) in rt6_is_dead() argument
4680 if (rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD || in rt6_is_dead()
4681 (rt->fib6_nh->fib_nh_flags & RTNH_F_LINKDOWN && in rt6_is_dead()
4682 ip6_ignore_linkdown(rt->fib6_nh->fib_nh_dev))) in rt6_is_dead()
4688 static int rt6_multipath_total_weight(const struct fib6_info *rt) in rt6_multipath_total_weight() argument
4693 if (!rt6_is_dead(rt)) in rt6_multipath_total_weight()
4694 total += rt->fib6_nh->fib_nh_weight; in rt6_multipath_total_weight()
4696 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) { in rt6_multipath_total_weight()
4704 static void rt6_upper_bound_set(struct fib6_info *rt, int *weight, int total) in rt6_upper_bound_set() argument
4708 if (!rt6_is_dead(rt)) { in rt6_upper_bound_set()
4709 *weight += rt->fib6_nh->fib_nh_weight; in rt6_upper_bound_set()
4713 atomic_set(&rt->fib6_nh->fib_nh_upper_bound, upper_bound); in rt6_upper_bound_set()
4716 static void rt6_multipath_upper_bound_set(struct fib6_info *rt, int total) in rt6_multipath_upper_bound_set() argument
4721 rt6_upper_bound_set(rt, &weight, total); in rt6_multipath_upper_bound_set()
4723 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_upper_bound_set()
4727 void rt6_multipath_rebalance(struct fib6_info *rt) in rt6_multipath_rebalance() argument
4736 if (!rt->fib6_nsiblings || rt->should_flush) in rt6_multipath_rebalance()
4743 first = rt6_multipath_first_sibling(rt); in rt6_multipath_rebalance()
4751 static int fib6_ifup(struct fib6_info *rt, void *p_arg) in fib6_ifup() argument
4756 if (rt != net->ipv6.fib6_null_entry && !rt->nh && in fib6_ifup()
4757 rt->fib6_nh->fib_nh_dev == arg->dev) { in fib6_ifup()
4758 rt->fib6_nh->fib_nh_flags &= ~arg->nh_flags; in fib6_ifup()
4759 fib6_update_sernum_upto_root(net, rt); in fib6_ifup()
4760 rt6_multipath_rebalance(rt); in fib6_ifup()
4782 static bool rt6_multipath_uses_dev(const struct fib6_info *rt, in rt6_multipath_uses_dev() argument
4787 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_uses_dev()
4789 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_uses_dev()
4796 static void rt6_multipath_flush(struct fib6_info *rt) in rt6_multipath_flush() argument
4800 rt->should_flush = 1; in rt6_multipath_flush()
4801 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_flush()
4805 static unsigned int rt6_multipath_dead_count(const struct fib6_info *rt, in rt6_multipath_dead_count() argument
4811 if (rt->fib6_nh->fib_nh_dev == down_dev || in rt6_multipath_dead_count()
4812 rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD) in rt6_multipath_dead_count()
4814 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_dead_count()
4822 static void rt6_multipath_nh_flags_set(struct fib6_info *rt, in rt6_multipath_nh_flags_set() argument
4828 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_nh_flags_set()
4829 rt->fib6_nh->fib_nh_flags |= nh_flags; in rt6_multipath_nh_flags_set()
4830 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_nh_flags_set()
4836 static int fib6_ifdown(struct fib6_info *rt, void *p_arg) in fib6_ifdown() argument
4842 if (rt == net->ipv6.fib6_null_entry || rt->nh) in fib6_ifdown()
4847 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4849 if (rt->should_flush) in fib6_ifdown()
4851 if (!rt->fib6_nsiblings) in fib6_ifdown()
4852 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4853 if (rt6_multipath_uses_dev(rt, dev)) { in fib6_ifdown()
4856 count = rt6_multipath_dead_count(rt, dev); in fib6_ifdown()
4857 if (rt->fib6_nsiblings + 1 == count) { in fib6_ifdown()
4858 rt6_multipath_flush(rt); in fib6_ifdown()
4861 rt6_multipath_nh_flags_set(rt, dev, RTNH_F_DEAD | in fib6_ifdown()
4863 fib6_update_sernum(net, rt); in fib6_ifdown()
4864 rt6_multipath_rebalance(rt); in fib6_ifdown()
4868 if (rt->fib6_nh->fib_nh_dev != dev || in fib6_ifdown()
4869 rt->fib6_flags & (RTF_LOCAL | RTF_ANYCAST)) in fib6_ifdown()
4871 rt->fib6_nh->fib_nh_flags |= RTNH_F_LINKDOWN; in fib6_ifdown()
4872 rt6_multipath_rebalance(rt); in fib6_ifdown()
5149 struct fib6_info *rt, in ip6_route_info_append() argument
5157 if (rt6_duplicate_nexthop(nh->fib6_info, rt)) in ip6_route_info_append()
5164 nh->fib6_info = rt; in ip6_route_info_append()
5171 static void ip6_route_mpath_notify(struct fib6_info *rt, in ip6_route_mpath_notify() argument
5183 rt = list_first_entry(&rt_last->fib6_siblings, in ip6_route_mpath_notify()
5188 if (rt) in ip6_route_mpath_notify()
5189 inet6_rt_notify(RTM_NEWROUTE, rt, info, nlflags); in ip6_route_mpath_notify()
5192 static bool ip6_route_mpath_should_notify(const struct fib6_info *rt) in ip6_route_mpath_should_notify() argument
5194 bool rt_can_ecmp = rt6_qualify_for_ecmp(rt); in ip6_route_mpath_should_notify()
5200 fn = rcu_dereference(rt->fib6_node); in ip6_route_mpath_should_notify()
5208 if (rt == leaf || in ip6_route_mpath_should_notify()
5209 (rt_can_ecmp && rt->fib6_metric == leaf->fib6_metric && in ip6_route_mpath_should_notify()
5238 struct fib6_info *rt; in ip6_route_multipath_add() local
5289 rt = ip6_route_info_create(&r_cfg, GFP_KERNEL, extack); in ip6_route_multipath_add()
5290 if (IS_ERR(rt)) { in ip6_route_multipath_add()
5291 err = PTR_ERR(rt); in ip6_route_multipath_add()
5292 rt = NULL; in ip6_route_multipath_add()
5295 if (!rt6_qualify_for_ecmp(rt)) { in ip6_route_multipath_add()
5299 fib6_info_release(rt); in ip6_route_multipath_add()
5303 rt->fib6_nh->fib_nh_weight = rtnh->rtnh_hops + 1; in ip6_route_multipath_add()
5306 rt, &r_cfg); in ip6_route_multipath_add()
5308 fib6_info_release(rt); in ip6_route_multipath_add()
5602 struct fib6_info *rt, struct dst_entry *dst, in rt6_fill_node() argument
5624 rt6_dst = &rt->fib6_dst; in rt6_fill_node()
5625 rt6_src = &rt->fib6_src; in rt6_fill_node()
5626 rt6_flags = rt->fib6_flags; in rt6_fill_node()
5634 if (rt->fib6_table) in rt6_fill_node()
5635 table = rt->fib6_table->tb6_id; in rt6_fill_node()
5642 rtm->rtm_type = rt->fib6_type; in rt6_fill_node()
5645 rtm->rtm_protocol = rt->fib6_protocol; in rt6_fill_node()
5681 if (ip6_route_get_saddr(net, rt, dest, 0, &saddr_buf) == 0 && in rt6_fill_node()
5686 if (rt->fib6_prefsrc.plen) { in rt6_fill_node()
5688 saddr_buf = rt->fib6_prefsrc.addr; in rt6_fill_node()
5693 pmetrics = dst ? dst_metrics_ptr(dst) : rt->fib6_metrics->metrics; in rt6_fill_node()
5697 if (nla_put_u32(skb, RTA_PRIORITY, rt->fib6_metric)) in rt6_fill_node()
5714 } else if (rt->fib6_nsiblings) { in rt6_fill_node()
5722 if (fib_add_nexthop(skb, &rt->fib6_nh->nh_common, in rt6_fill_node()
5723 rt->fib6_nh->fib_nh_weight, AF_INET6, in rt6_fill_node()
5728 &rt->fib6_siblings, fib6_siblings) { in rt6_fill_node()
5736 } else if (rt->nh) { in rt6_fill_node()
5737 if (nla_put_u32(skb, RTA_NH_ID, rt->nh->id)) in rt6_fill_node()
5740 if (nexthop_is_blackhole(rt->nh)) in rt6_fill_node()
5744 rt6_fill_node_nexthop(skb, rt->nh, &nh_flags) < 0) in rt6_fill_node()
5749 if (fib_nexthop_info(skb, &rt->fib6_nh->nh_common, AF_INET6, in rt6_fill_node()
5757 expires = dst ? dst->expires : rt->expires; in rt6_fill_node()
5762 if (READ_ONCE(rt->offload)) in rt6_fill_node()
5764 if (READ_ONCE(rt->trap)) in rt6_fill_node()
5766 if (READ_ONCE(rt->offload_failed)) in rt6_fill_node()
5824 struct fib6_info *rt; member
5865 err = rt6_fill_node(dump->net, dump->skb, w->rt, in rt6_nh_dump_exceptions()
5882 int rt6_dump_route(struct fib6_info *rt, void *p_arg, unsigned int skip) in rt6_dump_route() argument
5890 if (rt == net->ipv6.fib6_null_entry) in rt6_dump_route()
5894 !(rt->fib6_flags & RTF_PREFIX_RT)) { in rt6_dump_route()
5899 ((filter->rt_type && rt->fib6_type != filter->rt_type) || in rt6_dump_route()
5900 (filter->dev && !fib6_info_uses_dev(rt, filter->dev)) || in rt6_dump_route()
5901 (filter->protocol && rt->fib6_protocol != filter->protocol))) { in rt6_dump_route()
5914 if (rt6_fill_node(net, arg->skb, rt, NULL, NULL, NULL, in rt6_dump_route()
5926 .rt = rt, in rt6_dump_route()
5933 if (rt->nh) { in rt6_dump_route()
5934 err = nexthop_for_each_fib6_nh(rt->nh, in rt6_dump_route()
5938 err = rt6_nh_dump_exceptions(rt->fib6_nh, &w); in rt6_dump_route()
6024 struct rt6_info *rt; in inet6_rtm_getroute() local
6110 rt = container_of(dst, struct rt6_info, dst); in inet6_rtm_getroute()
6111 if (rt->dst.error) { in inet6_rtm_getroute()
6112 err = rt->dst.error; in inet6_rtm_getroute()
6113 ip6_rt_put(rt); in inet6_rtm_getroute()
6117 if (rt == net->ipv6.ip6_null_entry) { in inet6_rtm_getroute()
6118 err = rt->dst.error; in inet6_rtm_getroute()
6119 ip6_rt_put(rt); in inet6_rtm_getroute()
6125 ip6_rt_put(rt); in inet6_rtm_getroute()
6130 skb_dst_set(skb, &rt->dst); in inet6_rtm_getroute()
6133 from = rcu_dereference(rt->from); in inet6_rtm_getroute()
6160 void inet6_rt_notify(int event, struct fib6_info *rt, struct nl_info *info, in inet6_rt_notify() argument
6171 skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any()); in inet6_rt_notify()
6175 err = rt6_fill_node(net, skb, rt, NULL, NULL, NULL, 0, in inet6_rt_notify()
6191 void fib6_rt_update(struct net *net, struct fib6_info *rt, in fib6_rt_update() argument
6198 skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any()); in fib6_rt_update()
6202 err = rt6_fill_node(net, skb, rt, NULL, NULL, NULL, 0, in fib6_rt_update()
6646 DEFINE_BPF_ITER_FUNC(ipv6_route, struct bpf_iter_meta *meta, struct fib6_info *rt)
6662 { offsetof(struct bpf_iter__ipv6_route, rt),