Lines Matching full:rt
108 struct fib6_info *rt, struct dst_entry *dst,
135 void rt6_uncached_list_add(struct rt6_info *rt) in rt6_uncached_list_add() argument
139 rt->rt6i_uncached_list = ul; in rt6_uncached_list_add()
142 list_add_tail(&rt->rt6i_uncached, &ul->head); in rt6_uncached_list_add()
146 void rt6_uncached_list_del(struct rt6_info *rt) in rt6_uncached_list_del() argument
148 if (!list_empty(&rt->rt6i_uncached)) { in rt6_uncached_list_del()
149 struct uncached_list *ul = rt->rt6i_uncached_list; in rt6_uncached_list_del()
150 struct net *net = dev_net(rt->dst.dev); in rt6_uncached_list_del()
153 list_del(&rt->rt6i_uncached); in rt6_uncached_list_del()
169 struct rt6_info *rt; in rt6_uncached_list_flush_dev() local
172 list_for_each_entry(rt, &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()
177 rt->rt6i_idev = in6_dev_get(loopback_dev); in rt6_uncached_list_flush_dev()
182 rt->dst.dev = blackhole_netdev; in rt6_uncached_list_flush_dev()
183 dev_hold(rt->dst.dev); in rt6_uncached_list_flush_dev()
222 const struct rt6_info *rt = container_of(dst, struct rt6_info, dst); in ip6_dst_neigh_lookup() local
224 return ip6_neigh_lookup(rt6_nexthop(rt, &in6addr_any), in ip6_dst_neigh_lookup()
231 struct rt6_info *rt = (struct rt6_info *)dst; in ip6_confirm_neigh() local
233 daddr = choose_neigh_daddr(rt6_nexthop(rt, &in6addr_any), NULL, daddr); in ip6_confirm_neigh()
327 static void rt6_info_init(struct rt6_info *rt) in rt6_info_init() argument
329 struct dst_entry *dst = &rt->dst; in rt6_info_init()
331 memset(dst + 1, 0, sizeof(*rt) - sizeof(*dst)); in rt6_info_init()
332 INIT_LIST_HEAD(&rt->rt6i_uncached); in rt6_info_init()
339 struct rt6_info *rt = dst_alloc(&net->ipv6.ip6_dst_ops, dev, in ip6_dst_alloc() local
342 if (rt) { in ip6_dst_alloc()
343 rt6_info_init(rt); in ip6_dst_alloc()
347 return rt; in ip6_dst_alloc()
353 struct rt6_info *rt = (struct rt6_info *)dst; in ip6_dst_destroy() local
358 rt6_uncached_list_del(rt); in ip6_dst_destroy()
360 idev = rt->rt6i_idev; in ip6_dst_destroy()
362 rt->rt6i_idev = NULL; in ip6_dst_destroy()
366 from = xchg((__force struct fib6_info **)&rt->from, NULL); in ip6_dst_destroy()
373 struct rt6_info *rt = (struct rt6_info *)dst; in ip6_dst_ifdown() local
374 struct inet6_dev *idev = rt->rt6i_idev; in ip6_dst_ifdown()
381 rt->rt6i_idev = loopback_idev; in ip6_dst_ifdown()
387 static bool __rt6_check_expired(const struct rt6_info *rt) in __rt6_check_expired() argument
389 if (rt->rt6i_flags & RTF_EXPIRES) in __rt6_check_expired()
390 return time_after(jiffies, rt->dst.expires); in __rt6_check_expired()
395 static bool rt6_check_expired(const struct rt6_info *rt) in rt6_check_expired() argument
399 from = rcu_dereference(rt->from); in rt6_check_expired()
401 if (rt->rt6i_flags & RTF_EXPIRES) { in rt6_check_expired()
402 if (time_after(jiffies, rt->dst.expires)) in rt6_check_expired()
405 return rt->dst.obsolete != DST_OBSOLETE_FORCE_CHK || in rt6_check_expired()
930 struct fib6_info *rt; in rt6_route_rcv() local
968 rt = rt6_get_dflt_router(net, gwaddr, dev); in rt6_route_rcv()
970 rt = rt6_get_route_info(net, prefix, rinfo->prefix_len, in rt6_route_rcv()
973 if (rt && !lifetime) { in rt6_route_rcv()
974 ip6_del_rt(net, rt, false); in rt6_route_rcv()
975 rt = NULL; in rt6_route_rcv()
978 if (!rt && lifetime) in rt6_route_rcv()
979 rt = rt6_add_route_info(net, prefix, rinfo->prefix_len, gwaddr, in rt6_route_rcv()
981 else if (rt) in rt6_route_rcv()
982 rt->fib6_flags = RTF_ROUTEINFO | in rt6_route_rcv()
983 (rt->fib6_flags & ~RTF_PREF_MASK) | RTF_PREF(pref); in rt6_route_rcv()
985 if (rt) { in rt6_route_rcv()
987 fib6_clean_expires(rt); in rt6_route_rcv()
989 fib6_set_expires(rt, jiffies + HZ * lifetime); in rt6_route_rcv()
991 fib6_info_release(rt); in rt6_route_rcv()
1044 static unsigned short fib6_info_dst_flags(struct fib6_info *rt) in fib6_info_dst_flags() argument
1048 if (rt->dst_nocount) in fib6_info_dst_flags()
1050 if (rt->dst_nopolicy) in fib6_info_dst_flags()
1056 static void ip6_rt_init_dst_reject(struct rt6_info *rt, u8 fib6_type) in ip6_rt_init_dst_reject() argument
1058 rt->dst.error = ip6_rt_type_to_error(fib6_type); in ip6_rt_init_dst_reject()
1062 rt->dst.output = dst_discard_out; in ip6_rt_init_dst_reject()
1063 rt->dst.input = dst_discard; in ip6_rt_init_dst_reject()
1066 rt->dst.output = ip6_pkt_prohibit_out; in ip6_rt_init_dst_reject()
1067 rt->dst.input = ip6_pkt_prohibit; in ip6_rt_init_dst_reject()
1072 rt->dst.output = ip6_pkt_discard_out; in ip6_rt_init_dst_reject()
1073 rt->dst.input = ip6_pkt_discard; in ip6_rt_init_dst_reject()
1078 static void ip6_rt_init_dst(struct rt6_info *rt, const struct fib6_result *res) in ip6_rt_init_dst() argument
1083 ip6_rt_init_dst_reject(rt, res->fib6_type); in ip6_rt_init_dst()
1087 rt->dst.error = 0; in ip6_rt_init_dst()
1088 rt->dst.output = ip6_output; in ip6_rt_init_dst()
1091 rt->dst.input = ip6_input; in ip6_rt_init_dst()
1093 rt->dst.input = ip6_mc_input; in ip6_rt_init_dst()
1095 rt->dst.input = ip6_forward; in ip6_rt_init_dst()
1099 rt->dst.lwtstate = lwtstate_get(res->nh->fib_nh_lws); in ip6_rt_init_dst()
1100 lwtunnel_set_redirect(&rt->dst); in ip6_rt_init_dst()
1103 rt->dst.lastuse = jiffies; in ip6_rt_init_dst()
1107 static void rt6_set_from(struct rt6_info *rt, struct fib6_info *from) in rt6_set_from() argument
1109 rt->rt6i_flags &= ~RTF_EXPIRES; in rt6_set_from()
1110 rcu_assign_pointer(rt->from, from); in rt6_set_from()
1111 ip_dst_init_metrics(&rt->dst, from->fib6_metrics); in rt6_set_from()
1115 static void ip6_rt_copy_init(struct rt6_info *rt, const struct fib6_result *res) in ip6_rt_copy_init() argument
1121 ip6_rt_init_dst(rt, res); in ip6_rt_copy_init()
1123 rt->rt6i_dst = f6i->fib6_dst; in ip6_rt_copy_init()
1124 rt->rt6i_idev = dev ? in6_dev_get(dev) : NULL; in ip6_rt_copy_init()
1125 rt->rt6i_flags = res->fib6_flags; in ip6_rt_copy_init()
1127 rt->rt6i_gateway = nh->fib_nh_gw6; in ip6_rt_copy_init()
1128 rt->rt6i_flags |= RTF_GATEWAY; in ip6_rt_copy_init()
1130 rt6_set_from(rt, f6i); in ip6_rt_copy_init()
1132 rt->rt6i_src = f6i->fib6_src; in ip6_rt_copy_init()
1156 struct rt6_info *rt = *prt; in ip6_hold_safe() local
1158 if (dst_hold_safe(&rt->dst)) in ip6_hold_safe()
1161 rt = net->ipv6.ip6_null_entry; in ip6_hold_safe()
1162 dst_hold(&rt->dst); in ip6_hold_safe()
1164 rt = NULL; in ip6_hold_safe()
1166 *prt = rt; in ip6_hold_safe()
1205 struct rt6_info *rt; in ip6_pol_route_lookup() local
1225 rt = net->ipv6.ip6_null_entry; in ip6_pol_route_lookup()
1226 dst_hold(&rt->dst); in ip6_pol_route_lookup()
1236 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route_lookup()
1237 if (rt) { in ip6_pol_route_lookup()
1238 if (ip6_hold_safe(net, &rt)) in ip6_pol_route_lookup()
1239 dst_use_noref(&rt->dst, jiffies); in ip6_pol_route_lookup()
1242 rt = ip6_create_rt_rcu(&res); in ip6_pol_route_lookup()
1250 return rt; in ip6_pol_route_lookup()
1292 static int __ip6_ins_rt(struct fib6_info *rt, struct nl_info *info, in __ip6_ins_rt() argument
1298 table = rt->fib6_table; in __ip6_ins_rt()
1300 err = fib6_add(&table->tb6_root, rt, info, extack); in __ip6_ins_rt()
1306 int ip6_ins_rt(struct net *net, struct fib6_info *rt) in ip6_ins_rt() argument
1310 return __ip6_ins_rt(rt, &info, NULL); in ip6_ins_rt()
1319 struct rt6_info *rt; in ip6_rt_cache_alloc() local
1329 rt = ip6_dst_alloc(dev_net(dev), dev, 0); in ip6_rt_cache_alloc()
1330 if (!rt) { in ip6_rt_cache_alloc()
1335 ip6_rt_copy_init(rt, res); in ip6_rt_cache_alloc()
1336 rt->rt6i_flags |= RTF_CACHE; in ip6_rt_cache_alloc()
1337 rt->rt6i_dst.addr = *daddr; in ip6_rt_cache_alloc()
1338 rt->rt6i_dst.plen = 128; in ip6_rt_cache_alloc()
1343 rt->rt6i_flags |= RTF_ANYCAST; in ip6_rt_cache_alloc()
1345 if (rt->rt6i_src.plen && saddr) { in ip6_rt_cache_alloc()
1346 rt->rt6i_src.addr = *saddr; in ip6_rt_cache_alloc()
1347 rt->rt6i_src.plen = 128; in ip6_rt_cache_alloc()
1352 return rt; in ip6_rt_cache_alloc()
1506 /* Helper function to find the cached rt in the hash table
1539 /* Helper function to find the cached rt in the hash table
1780 /* Find cached rt in the hash table inside passed in rt
1802 * rt->rt6i_src is updated.) in rt6_find_cached_rt()
1825 /* Remove the passed in cached rt from the hash table that contains it */
1827 const struct rt6_info *rt) in fib6_nh_remove_exception() argument
1848 src_key = &rt->rt6i_src.addr; in fib6_nh_remove_exception()
1851 &rt->rt6i_dst.addr, in fib6_nh_remove_exception()
1865 struct rt6_info *rt; member
1874 err = fib6_nh_remove_exception(nh, arg->plen, arg->rt); in rt6_nh_remove_exception_rt()
1881 static int rt6_remove_exception_rt(struct rt6_info *rt) in rt6_remove_exception_rt() argument
1885 from = rcu_dereference(rt->from); in rt6_remove_exception_rt()
1886 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_remove_exception_rt()
1891 .rt = rt, in rt6_remove_exception_rt()
1904 from->fib6_src.plen, rt); in rt6_remove_exception_rt()
1907 /* Find rt6_ex which contains the passed in rt cache and
1911 const struct rt6_info *rt) in fib6_nh_update_exception() argument
1926 src_key = &rt->rt6i_src.addr; in fib6_nh_update_exception()
1928 rt6_ex = __rt6_find_exception_rcu(&bucket, &rt->rt6i_dst.addr, src_key); in fib6_nh_update_exception()
1956 static void rt6_update_exception_stamp_rt(struct rt6_info *rt) in rt6_update_exception_stamp_rt() argument
1963 from = rcu_dereference(rt->from); in rt6_update_exception_stamp_rt()
1964 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_update_exception_stamp_rt()
1969 .dev = rt->dst.dev, in rt6_update_exception_stamp_rt()
1970 .gw = &rt->rt6i_gateway, in rt6_update_exception_stamp_rt()
1981 fib6_nh_update_exception(fib6_nh, from->fib6_src.plen, rt); in rt6_update_exception_stamp_rt()
1987 struct rt6_info *rt, int mtu) in rt6_mtu_change_route_allowed() argument
1999 if (dst_mtu(&rt->dst) >= mtu) in rt6_mtu_change_route_allowed()
2002 if (dst_mtu(&rt->dst) == idev->cnf.mtu6) in rt6_mtu_change_route_allowed()
2024 * route), the metrics of its rt->from have already in rt6_exceptions_update_pmtu()
2075 struct rt6_info *rt = rt6_ex->rt6i; in rt6_age_examine_exception() local
2083 if (!(rt->rt6i_flags & RTF_EXPIRES)) { in rt6_age_examine_exception()
2084 if (time_after_eq(now, rt->dst.lastuse + gc_args->timeout)) { in rt6_age_examine_exception()
2085 RT6_TRACE("aging clone %p\n", rt); in rt6_age_examine_exception()
2089 } else if (time_after(jiffies, rt->dst.expires)) { in rt6_age_examine_exception()
2090 RT6_TRACE("purging expired route %p\n", rt); in rt6_age_examine_exception()
2095 if (rt->rt6i_flags & RTF_GATEWAY) { in rt6_age_examine_exception()
2099 neigh = __ipv6_neigh_lookup_noref(rt->dst.dev, &rt->rt6i_gateway); in rt6_age_examine_exception()
2105 rt); in rt6_age_examine_exception()
2209 struct rt6_info *rt = NULL; in ip6_pol_route() local
2229 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route()
2230 if (rt) { in ip6_pol_route()
2239 rt = ip6_rt_cache_alloc(&res, &fl6->daddr, NULL); in ip6_pol_route()
2241 if (rt) { in ip6_pol_route()
2247 rt6_uncached_list_add(rt); in ip6_pol_route()
2251 return rt; in ip6_pol_route()
2256 rt = rt6_get_pcpu_route(&res); in ip6_pol_route()
2258 if (!rt) in ip6_pol_route()
2259 rt = rt6_make_pcpu_route(net, &res); in ip6_pol_route()
2264 if (!rt) in ip6_pol_route()
2265 rt = net->ipv6.ip6_null_entry; in ip6_pol_route()
2267 ip6_hold_safe(net, &rt); in ip6_pol_route()
2270 return rt; in ip6_pol_route()
2531 struct rt6_info *rt, *ort = (struct rt6_info *) dst_orig; in ip6_blackhole_route() local
2535 rt = dst_alloc(&ip6_dst_blackhole_ops, loopback_dev, 1, in ip6_blackhole_route()
2537 if (rt) { in ip6_blackhole_route()
2538 rt6_info_init(rt); in ip6_blackhole_route()
2541 new = &rt->dst; in ip6_blackhole_route()
2548 rt->rt6i_idev = in6_dev_get(loopback_dev); in ip6_blackhole_route()
2549 rt->rt6i_gateway = ort->rt6i_gateway; in ip6_blackhole_route()
2550 rt->rt6i_flags = ort->rt6i_flags & ~RTF_PCPU; in ip6_blackhole_route()
2552 memcpy(&rt->rt6i_dst, &ort->rt6i_dst, sizeof(struct rt6key)); in ip6_blackhole_route()
2554 memcpy(&rt->rt6i_src, &ort->rt6i_src, sizeof(struct rt6key)); in ip6_blackhole_route()
2579 static struct dst_entry *rt6_check(struct rt6_info *rt, in rt6_check() argument
2589 if (rt6_check_expired(rt)) in rt6_check()
2592 return &rt->dst; in rt6_check()
2595 static struct dst_entry *rt6_dst_from_check(struct rt6_info *rt, in rt6_dst_from_check() argument
2599 if (!__rt6_check_expired(rt) && in rt6_dst_from_check()
2600 rt->dst.obsolete == DST_OBSOLETE_FORCE_CHK && in rt6_dst_from_check()
2602 return &rt->dst; in rt6_dst_from_check()
2611 struct rt6_info *rt; in ip6_dst_check() local
2613 rt = container_of(dst, struct rt6_info, dst); in ip6_dst_check()
2615 if (rt->sernum) in ip6_dst_check()
2616 return rt6_is_valid(rt) ? dst : NULL; in ip6_dst_check()
2625 from = rcu_dereference(rt->from); in ip6_dst_check()
2627 if (from && (rt->rt6i_flags & RTF_PCPU || in ip6_dst_check()
2628 unlikely(!list_empty(&rt->rt6i_uncached)))) in ip6_dst_check()
2629 dst_ret = rt6_dst_from_check(rt, from, cookie); in ip6_dst_check()
2631 dst_ret = rt6_check(rt, from, cookie); in ip6_dst_check()
2640 struct rt6_info *rt = (struct rt6_info *) dst; in ip6_negative_advice() local
2642 if (rt) { in ip6_negative_advice()
2643 if (rt->rt6i_flags & RTF_CACHE) { in ip6_negative_advice()
2645 if (rt6_check_expired(rt)) { in ip6_negative_advice()
2646 rt6_remove_exception_rt(rt); in ip6_negative_advice()
2660 struct rt6_info *rt; in ip6_link_failure() local
2664 rt = (struct rt6_info *) skb_dst(skb); in ip6_link_failure()
2665 if (rt) { in ip6_link_failure()
2667 if (rt->rt6i_flags & RTF_CACHE) { in ip6_link_failure()
2668 rt6_remove_exception_rt(rt); in ip6_link_failure()
2673 from = rcu_dereference(rt->from); in ip6_link_failure()
2676 if (fn && (rt->rt6i_flags & RTF_DEFAULT)) in ip6_link_failure()
2700 static void rt6_do_update_pmtu(struct rt6_info *rt, u32 mtu) in rt6_do_update_pmtu() argument
2702 struct net *net = dev_net(rt->dst.dev); in rt6_do_update_pmtu()
2704 dst_metric_set(&rt->dst, RTAX_MTU, mtu); in rt6_do_update_pmtu()
2705 rt->rt6i_flags |= RTF_MODIFIED; in rt6_do_update_pmtu()
2706 rt6_update_expires(rt, net->ipv6.sysctl.ip6_rt_mtu_expires); in rt6_do_update_pmtu()
2709 static bool rt6_cache_allowed_for_pmtu(const struct rt6_info *rt) in rt6_cache_allowed_for_pmtu() argument
2711 return !(rt->rt6i_flags & RTF_CACHE) && in rt6_cache_allowed_for_pmtu()
2712 (rt->rt6i_flags & RTF_PCPU || rcu_access_pointer(rt->from)); in rt6_cache_allowed_for_pmtu()
2928 struct fib6_info *rt; in __ip6_route_redirect() local
2951 res.f6i = rt; in __ip6_route_redirect()
2952 if (fib6_check_expired(rt)) in __ip6_route_redirect()
2954 if (rt->fib6_flags & RTF_REJECT) in __ip6_route_redirect()
2956 if (unlikely(rt->nh)) { in __ip6_route_redirect()
2957 if (nexthop_is_blackhole(rt->nh)) in __ip6_route_redirect()
2960 if (nexthop_for_each_fib6_nh(rt->nh, in __ip6_route_redirect()
2965 res.nh = rt->fib6_nh; in __ip6_route_redirect()
2972 if (!rt) in __ip6_route_redirect()
2973 rt = net->ipv6.fib6_null_entry; in __ip6_route_redirect()
2974 else if (rt->fib6_flags & RTF_REJECT) { in __ip6_route_redirect()
2979 if (rt == net->ipv6.fib6_null_entry) { in __ip6_route_redirect()
2985 res.f6i = rt; in __ip6_route_redirect()
2986 res.nh = rt->fib6_nh; in __ip6_route_redirect()
3123 struct rt6_info *rt; in ip6_mtu_from_fib6() local
3132 rt = rt6_find_cached_rt(res, daddr, saddr); in ip6_mtu_from_fib6()
3133 if (unlikely(rt)) { in ip6_mtu_from_fib6()
3134 mtu = dst_metric_raw(&rt->dst, RTAX_MTU); in ip6_mtu_from_fib6()
3153 struct rt6_info *rt; in icmp6_dst_alloc() local
3160 rt = ip6_dst_alloc(net, dev, 0); in icmp6_dst_alloc()
3161 if (unlikely(!rt)) { in icmp6_dst_alloc()
3167 rt->dst.input = ip6_input; in icmp6_dst_alloc()
3168 rt->dst.output = ip6_output; in icmp6_dst_alloc()
3169 rt->rt6i_gateway = fl6->daddr; in icmp6_dst_alloc()
3170 rt->rt6i_dst.addr = fl6->daddr; in icmp6_dst_alloc()
3171 rt->rt6i_dst.plen = 128; in icmp6_dst_alloc()
3172 rt->rt6i_idev = idev; in icmp6_dst_alloc()
3173 dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 0); in icmp6_dst_alloc()
3178 rt6_uncached_list_add(rt); in icmp6_dst_alloc()
3181 dst = xfrm_lookup(net, &rt->dst, flowi6_to_flowi(fl6), NULL, 0); in icmp6_dst_alloc()
3578 struct fib6_info *rt = NULL; in ip6_route_info_create() local
3644 rt = fib6_info_alloc(gfp_flags, !nh); in ip6_route_info_create()
3645 if (!rt) in ip6_route_info_create()
3648 rt->fib6_metrics = ip_fib_metrics_init(net, cfg->fc_mx, cfg->fc_mx_len, in ip6_route_info_create()
3650 if (IS_ERR(rt->fib6_metrics)) { in ip6_route_info_create()
3651 err = PTR_ERR(rt->fib6_metrics); in ip6_route_info_create()
3653 rt->fib6_metrics = (struct dst_metrics *)&dst_default_metrics; in ip6_route_info_create()
3658 rt->dst_nocount = true; in ip6_route_info_create()
3661 fib6_set_expires(rt, jiffies + in ip6_route_info_create()
3664 fib6_clean_expires(rt); in ip6_route_info_create()
3668 rt->fib6_protocol = cfg->fc_protocol; in ip6_route_info_create()
3670 rt->fib6_table = table; in ip6_route_info_create()
3671 rt->fib6_metric = cfg->fc_metric; in ip6_route_info_create()
3672 rt->fib6_type = cfg->fc_type ? : RTN_UNICAST; in ip6_route_info_create()
3673 rt->fib6_flags = cfg->fc_flags & ~RTF_GATEWAY; in ip6_route_info_create()
3675 ipv6_addr_prefix(&rt->fib6_dst.addr, &cfg->fc_dst, cfg->fc_dst_len); in ip6_route_info_create()
3676 rt->fib6_dst.plen = cfg->fc_dst_len; in ip6_route_info_create()
3679 ipv6_addr_prefix(&rt->fib6_src.addr, &cfg->fc_src, cfg->fc_src_len); in ip6_route_info_create()
3680 rt->fib6_src.plen = cfg->fc_src_len; in ip6_route_info_create()
3683 if (rt->fib6_src.plen) { in ip6_route_info_create()
3691 rt->nh = nh; in ip6_route_info_create()
3692 fib6_nh = nexthop_fib6_nh(rt->nh); in ip6_route_info_create()
3694 err = fib6_nh_init(net, rt->fib6_nh, cfg, gfp_flags, extack); in ip6_route_info_create()
3698 fib6_nh = rt->fib6_nh; in ip6_route_info_create()
3704 if (fib6_is_reject(cfg->fc_flags, rt->fib6_nh->fib_nh_dev, in ip6_route_info_create()
3706 rt->fib6_flags = RTF_REJECT | RTF_NONEXTHOP; in ip6_route_info_create()
3717 rt->fib6_prefsrc.addr = cfg->fc_prefsrc; in ip6_route_info_create()
3718 rt->fib6_prefsrc.plen = 128; in ip6_route_info_create()
3720 rt->fib6_prefsrc.plen = 0; in ip6_route_info_create()
3722 return rt; in ip6_route_info_create()
3724 fib6_info_release(rt); in ip6_route_info_create()
3727 ip_fib_metrics_put(rt->fib6_metrics); in ip6_route_info_create()
3728 kfree(rt); in ip6_route_info_create()
3735 struct fib6_info *rt; in ip6_route_add() local
3738 rt = ip6_route_info_create(cfg, gfp_flags, extack); in ip6_route_add()
3739 if (IS_ERR(rt)) in ip6_route_add()
3740 return PTR_ERR(rt); in ip6_route_add()
3742 err = __ip6_ins_rt(rt, &cfg->fc_nlinfo, extack); in ip6_route_add()
3743 fib6_info_release(rt); in ip6_route_add()
3748 static int __ip6_del_rt(struct fib6_info *rt, struct nl_info *info) in __ip6_del_rt() argument
3754 if (rt == net->ipv6.fib6_null_entry) { in __ip6_del_rt()
3759 table = rt->fib6_table; in __ip6_del_rt()
3761 err = fib6_del(rt, info); in __ip6_del_rt()
3765 fib6_info_release(rt); in __ip6_del_rt()
3769 int ip6_del_rt(struct net *net, struct fib6_info *rt, bool skip_notify) in ip6_del_rt() argument
3776 return __ip6_del_rt(rt, &info); in ip6_del_rt()
3779 static int __ip6_del_rt_siblings(struct fib6_info *rt, struct fib6_config *cfg) in __ip6_del_rt_siblings() argument
3787 if (rt == net->ipv6.fib6_null_entry) in __ip6_del_rt_siblings()
3789 table = rt->fib6_table; in __ip6_del_rt_siblings()
3792 if (rt->fib6_nsiblings && cfg->fc_delete_all_nh) { in __ip6_del_rt_siblings()
3797 skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any()); in __ip6_del_rt_siblings()
3801 if (rt6_fill_node(net, skb, rt, NULL, in __ip6_del_rt_siblings()
3810 /* 'rt' points to the first sibling route. If it is not the in __ip6_del_rt_siblings()
3816 fn = rcu_dereference_protected(rt->fib6_node, in __ip6_del_rt_siblings()
3818 if (rcu_access_pointer(fn->leaf) == rt) { in __ip6_del_rt_siblings()
3821 last_sibling = list_last_entry(&rt->fib6_siblings, in __ip6_del_rt_siblings()
3833 rt, rt->fib6_nsiblings, in __ip6_del_rt_siblings()
3837 &rt->fib6_siblings, in __ip6_del_rt_siblings()
3845 err = fib6_del(rt, info); in __ip6_del_rt_siblings()
3849 fib6_info_release(rt); in __ip6_del_rt_siblings()
3858 static int __ip6_del_cached_rt(struct rt6_info *rt, struct fib6_config *cfg) in __ip6_del_cached_rt() argument
3862 if (cfg->fc_ifindex && rt->dst.dev->ifindex != cfg->fc_ifindex) in __ip6_del_cached_rt()
3866 !ipv6_addr_equal(&cfg->fc_gateway, &rt->rt6i_gateway)) in __ip6_del_cached_rt()
3869 rc = rt6_remove_exception_rt(rt); in __ip6_del_cached_rt()
3874 static int ip6_del_cached_rt(struct fib6_config *cfg, struct fib6_info *rt, in ip6_del_cached_rt() argument
3878 .f6i = rt, in ip6_del_cached_rt()
3918 struct fib6_info *rt; in ip6_route_del() local
3939 if (rt->nh && cfg->fc_nh_id && in ip6_route_del()
3940 rt->nh->id != cfg->fc_nh_id) in ip6_route_del()
3946 if (rt->nh) { in ip6_route_del()
3947 rc = ip6_del_cached_rt_nh(cfg, rt); in ip6_route_del()
3951 nh = rt->fib6_nh; in ip6_route_del()
3952 rc = ip6_del_cached_rt(cfg, rt, nh); in ip6_route_del()
3961 if (cfg->fc_metric && cfg->fc_metric != rt->fib6_metric) in ip6_route_del()
3964 cfg->fc_protocol != rt->fib6_protocol) in ip6_route_del()
3967 if (rt->nh) { in ip6_route_del()
3968 if (!fib6_info_hold_safe(rt)) in ip6_route_del()
3972 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
3977 nh = rt->fib6_nh; in ip6_route_del()
3985 if (!fib6_info_hold_safe(rt)) in ip6_route_del()
3991 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
3993 return __ip6_del_rt_siblings(rt, cfg); in ip6_route_del()
4004 struct rt6_info *rt, *nrt = NULL; in rt6_do_redirect() local
4063 rt = (struct rt6_info *) dst; in rt6_do_redirect()
4064 if (rt->rt6i_flags & RTF_REJECT) { in rt6_do_redirect()
4073 dst_confirm_neigh(&rt->dst, &ipv6_hdr(skb)->saddr); in rt6_do_redirect()
4091 res.f6i = rcu_dereference(rt->from); in rt6_do_redirect()
4098 .gw = &rt->rt6i_gateway, in rt6_do_redirect()
4132 netevent.old = &rt->dst; in rt6_do_redirect()
4152 struct fib6_info *rt = NULL; in rt6_get_route_info() local
4166 if (rt->nh) in rt6_get_route_info()
4168 if (rt->fib6_nh->fib_nh_dev->ifindex != ifindex) in rt6_get_route_info()
4170 if (!(rt->fib6_flags & RTF_ROUTEINFO) || in rt6_get_route_info()
4171 !rt->fib6_nh->fib_nh_gw_family) in rt6_get_route_info()
4173 if (!ipv6_addr_equal(&rt->fib6_nh->fib_nh_gw6, gwaddr)) in rt6_get_route_info()
4175 if (!fib6_info_hold_safe(rt)) in rt6_get_route_info()
4181 return rt; in rt6_get_route_info()
4222 struct fib6_info *rt; in rt6_get_dflt_router() local
4234 if (rt->nh) in rt6_get_dflt_router()
4237 nh = rt->fib6_nh; in rt6_get_dflt_router()
4239 ((rt->fib6_flags & (RTF_ADDRCONF | RTF_DEFAULT)) == (RTF_ADDRCONF | RTF_DEFAULT)) && in rt6_get_dflt_router()
4243 if (rt && !fib6_info_hold_safe(rt)) in rt6_get_dflt_router()
4244 rt = NULL; in rt6_get_dflt_router()
4246 return rt; in rt6_get_dflt_router()
4280 static int rt6_addrconf_purge(struct fib6_info *rt, void *arg) in rt6_addrconf_purge() argument
4282 struct net_device *dev = fib6_info_nh_dev(rt); in rt6_addrconf_purge()
4285 if (rt->fib6_flags & (RTF_DEFAULT | RTF_ADDRCONF) && in rt6_addrconf_purge()
4458 static int fib6_remove_prefsrc(struct fib6_info *rt, void *arg) in fib6_remove_prefsrc() argument
4464 if (!rt->nh && in fib6_remove_prefsrc()
4465 ((void *)rt->fib6_nh->fib_nh_dev == dev || !dev) && in fib6_remove_prefsrc()
4466 rt != net->ipv6.fib6_null_entry && in fib6_remove_prefsrc()
4467 ipv6_addr_equal(addr, &rt->fib6_prefsrc.addr)) { in fib6_remove_prefsrc()
4470 rt->fib6_prefsrc.plen = 0; in fib6_remove_prefsrc()
4490 static int fib6_clean_tohost(struct fib6_info *rt, void *arg) in fib6_clean_tohost() argument
4496 if (rt->nh) in fib6_clean_tohost()
4499 nh = rt->fib6_nh; in fib6_clean_tohost()
4500 if (((rt->fib6_flags & RTF_RA_ROUTER) == RTF_RA_ROUTER) && in fib6_clean_tohost()
4526 static struct fib6_info *rt6_multipath_first_sibling(const struct fib6_info *rt) in rt6_multipath_first_sibling() argument
4531 fn = rcu_dereference_protected(rt->fib6_node, in rt6_multipath_first_sibling()
4532 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4534 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4536 if (iter->fib6_metric == rt->fib6_metric && in rt6_multipath_first_sibling()
4540 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4547 static bool rt6_is_dead(const struct fib6_info *rt) in rt6_is_dead() argument
4549 if (rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD || in rt6_is_dead()
4550 (rt->fib6_nh->fib_nh_flags & RTNH_F_LINKDOWN && in rt6_is_dead()
4551 ip6_ignore_linkdown(rt->fib6_nh->fib_nh_dev))) in rt6_is_dead()
4557 static int rt6_multipath_total_weight(const struct fib6_info *rt) in rt6_multipath_total_weight() argument
4562 if (!rt6_is_dead(rt)) in rt6_multipath_total_weight()
4563 total += rt->fib6_nh->fib_nh_weight; in rt6_multipath_total_weight()
4565 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) { in rt6_multipath_total_weight()
4573 static void rt6_upper_bound_set(struct fib6_info *rt, int *weight, int total) in rt6_upper_bound_set() argument
4577 if (!rt6_is_dead(rt)) { in rt6_upper_bound_set()
4578 *weight += rt->fib6_nh->fib_nh_weight; in rt6_upper_bound_set()
4582 atomic_set(&rt->fib6_nh->fib_nh_upper_bound, upper_bound); in rt6_upper_bound_set()
4585 static void rt6_multipath_upper_bound_set(struct fib6_info *rt, int total) in rt6_multipath_upper_bound_set() argument
4590 rt6_upper_bound_set(rt, &weight, total); in rt6_multipath_upper_bound_set()
4592 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_upper_bound_set()
4596 void rt6_multipath_rebalance(struct fib6_info *rt) in rt6_multipath_rebalance() argument
4605 if (!rt->fib6_nsiblings || rt->should_flush) in rt6_multipath_rebalance()
4612 first = rt6_multipath_first_sibling(rt); in rt6_multipath_rebalance()
4620 static int fib6_ifup(struct fib6_info *rt, void *p_arg) in fib6_ifup() argument
4625 if (rt != net->ipv6.fib6_null_entry && !rt->nh && in fib6_ifup()
4626 rt->fib6_nh->fib_nh_dev == arg->dev) { in fib6_ifup()
4627 rt->fib6_nh->fib_nh_flags &= ~arg->nh_flags; in fib6_ifup()
4628 fib6_update_sernum_upto_root(net, rt); in fib6_ifup()
4629 rt6_multipath_rebalance(rt); in fib6_ifup()
4651 static bool rt6_multipath_uses_dev(const struct fib6_info *rt, in rt6_multipath_uses_dev() argument
4656 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_uses_dev()
4658 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_uses_dev()
4665 static void rt6_multipath_flush(struct fib6_info *rt) in rt6_multipath_flush() argument
4669 rt->should_flush = 1; in rt6_multipath_flush()
4670 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_flush()
4674 static unsigned int rt6_multipath_dead_count(const struct fib6_info *rt, in rt6_multipath_dead_count() argument
4680 if (rt->fib6_nh->fib_nh_dev == down_dev || in rt6_multipath_dead_count()
4681 rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD) in rt6_multipath_dead_count()
4683 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_dead_count()
4691 static void rt6_multipath_nh_flags_set(struct fib6_info *rt, in rt6_multipath_nh_flags_set() argument
4697 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_nh_flags_set()
4698 rt->fib6_nh->fib_nh_flags |= nh_flags; in rt6_multipath_nh_flags_set()
4699 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_nh_flags_set()
4704 /* called with write lock held for table with rt */
4705 static int fib6_ifdown(struct fib6_info *rt, void *p_arg) in fib6_ifdown() argument
4711 if (rt == net->ipv6.fib6_null_entry || rt->nh) in fib6_ifdown()
4716 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4718 if (rt->should_flush) in fib6_ifdown()
4720 if (!rt->fib6_nsiblings) in fib6_ifdown()
4721 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4722 if (rt6_multipath_uses_dev(rt, dev)) { in fib6_ifdown()
4725 count = rt6_multipath_dead_count(rt, dev); in fib6_ifdown()
4726 if (rt->fib6_nsiblings + 1 == count) { in fib6_ifdown()
4727 rt6_multipath_flush(rt); in fib6_ifdown()
4730 rt6_multipath_nh_flags_set(rt, dev, RTNH_F_DEAD | in fib6_ifdown()
4732 fib6_update_sernum(net, rt); in fib6_ifdown()
4733 rt6_multipath_rebalance(rt); in fib6_ifdown()
4737 if (rt->fib6_nh->fib_nh_dev != dev || in fib6_ifdown()
4738 rt->fib6_flags & (RTF_LOCAL | RTF_ANYCAST)) in fib6_ifdown()
4740 rt->fib6_nh->fib_nh_flags |= RTNH_F_LINKDOWN; in fib6_ifdown()
4741 rt6_multipath_rebalance(rt); in fib6_ifdown()
5012 struct fib6_info *rt, in ip6_route_info_append() argument
5020 if (rt6_duplicate_nexthop(nh->fib6_info, rt)) in ip6_route_info_append()
5027 nh->fib6_info = rt; in ip6_route_info_append()
5034 static void ip6_route_mpath_notify(struct fib6_info *rt, in ip6_route_mpath_notify() argument
5039 /* if this is an APPEND route, then rt points to the first route in ip6_route_mpath_notify()
5046 rt = list_first_entry(&rt_last->fib6_siblings, in ip6_route_mpath_notify()
5051 if (rt) in ip6_route_mpath_notify()
5052 inet6_rt_notify(RTM_NEWROUTE, rt, info, nlflags); in ip6_route_mpath_notify()
5055 static bool ip6_route_mpath_should_notify(const struct fib6_info *rt) in ip6_route_mpath_should_notify() argument
5057 bool rt_can_ecmp = rt6_qualify_for_ecmp(rt); in ip6_route_mpath_should_notify()
5063 fn = rcu_dereference(rt->fib6_node); in ip6_route_mpath_should_notify()
5071 if (rt == leaf || in ip6_route_mpath_should_notify()
5072 (rt_can_ecmp && rt->fib6_metric == leaf->fib6_metric && in ip6_route_mpath_should_notify()
5101 struct fib6_info *rt; in ip6_route_multipath_add() local
5152 rt = ip6_route_info_create(&r_cfg, GFP_KERNEL, extack); in ip6_route_multipath_add()
5153 if (IS_ERR(rt)) { in ip6_route_multipath_add()
5154 err = PTR_ERR(rt); in ip6_route_multipath_add()
5155 rt = NULL; in ip6_route_multipath_add()
5158 if (!rt6_qualify_for_ecmp(rt)) { in ip6_route_multipath_add()
5162 fib6_info_release(rt); in ip6_route_multipath_add()
5166 rt->fib6_nh->fib_nh_weight = rtnh->rtnh_hops + 1; in ip6_route_multipath_add()
5169 rt, &r_cfg); in ip6_route_multipath_add()
5171 fib6_info_release(rt); in ip6_route_multipath_add()
5464 struct fib6_info *rt, struct dst_entry *dst, in rt6_fill_node() argument
5486 rt6_dst = &rt->fib6_dst; in rt6_fill_node()
5487 rt6_src = &rt->fib6_src; in rt6_fill_node()
5488 rt6_flags = rt->fib6_flags; in rt6_fill_node()
5496 if (rt->fib6_table) in rt6_fill_node()
5497 table = rt->fib6_table->tb6_id; in rt6_fill_node()
5504 rtm->rtm_type = rt->fib6_type; in rt6_fill_node()
5507 rtm->rtm_protocol = rt->fib6_protocol; in rt6_fill_node()
5543 if (ip6_route_get_saddr(net, rt, dest, 0, &saddr_buf) == 0 && in rt6_fill_node()
5548 if (rt->fib6_prefsrc.plen) { in rt6_fill_node()
5550 saddr_buf = rt->fib6_prefsrc.addr; in rt6_fill_node()
5555 pmetrics = dst ? dst_metrics_ptr(dst) : rt->fib6_metrics->metrics; in rt6_fill_node()
5559 if (nla_put_u32(skb, RTA_PRIORITY, rt->fib6_metric)) in rt6_fill_node()
5572 } else if (rt->fib6_nsiblings) { in rt6_fill_node()
5580 if (fib_add_nexthop(skb, &rt->fib6_nh->nh_common, in rt6_fill_node()
5581 rt->fib6_nh->fib_nh_weight, AF_INET6, in rt6_fill_node()
5586 &rt->fib6_siblings, fib6_siblings) { in rt6_fill_node()
5594 } else if (rt->nh) { in rt6_fill_node()
5595 if (nla_put_u32(skb, RTA_NH_ID, rt->nh->id)) in rt6_fill_node()
5598 if (nexthop_is_blackhole(rt->nh)) in rt6_fill_node()
5602 rt6_fill_node_nexthop(skb, rt->nh, &nh_flags) < 0) in rt6_fill_node()
5607 if (fib_nexthop_info(skb, &rt->fib6_nh->nh_common, AF_INET6, in rt6_fill_node()
5615 expires = dst ? dst->expires : rt->expires; in rt6_fill_node()
5620 if (rt->offload) in rt6_fill_node()
5622 if (rt->trap) in rt6_fill_node()
5680 struct fib6_info *rt; member
5721 err = rt6_fill_node(dump->net, dump->skb, w->rt, in rt6_nh_dump_exceptions()
5738 int rt6_dump_route(struct fib6_info *rt, void *p_arg, unsigned int skip) in rt6_dump_route() argument
5746 if (rt == net->ipv6.fib6_null_entry) in rt6_dump_route()
5750 !(rt->fib6_flags & RTF_PREFIX_RT)) { in rt6_dump_route()
5755 ((filter->rt_type && rt->fib6_type != filter->rt_type) || in rt6_dump_route()
5756 (filter->dev && !fib6_info_uses_dev(rt, filter->dev)) || in rt6_dump_route()
5757 (filter->protocol && rt->fib6_protocol != filter->protocol))) { in rt6_dump_route()
5770 if (rt6_fill_node(net, arg->skb, rt, NULL, NULL, NULL, in rt6_dump_route()
5782 .rt = rt, in rt6_dump_route()
5789 if (rt->nh) { in rt6_dump_route()
5790 err = nexthop_for_each_fib6_nh(rt->nh, in rt6_dump_route()
5794 err = rt6_nh_dump_exceptions(rt->fib6_nh, &w); in rt6_dump_route()
5880 struct rt6_info *rt; in inet6_rtm_getroute() local
5966 rt = container_of(dst, struct rt6_info, dst); in inet6_rtm_getroute()
5967 if (rt->dst.error) { in inet6_rtm_getroute()
5968 err = rt->dst.error; in inet6_rtm_getroute()
5969 ip6_rt_put(rt); in inet6_rtm_getroute()
5973 if (rt == net->ipv6.ip6_null_entry) { in inet6_rtm_getroute()
5974 err = rt->dst.error; in inet6_rtm_getroute()
5975 ip6_rt_put(rt); in inet6_rtm_getroute()
5981 ip6_rt_put(rt); in inet6_rtm_getroute()
5986 skb_dst_set(skb, &rt->dst); in inet6_rtm_getroute()
5989 from = rcu_dereference(rt->from); in inet6_rtm_getroute()
6016 void inet6_rt_notify(int event, struct fib6_info *rt, struct nl_info *info, in inet6_rt_notify() argument
6027 skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any()); in inet6_rt_notify()
6031 err = rt6_fill_node(net, skb, rt, NULL, NULL, NULL, 0, in inet6_rt_notify()
6047 void fib6_rt_update(struct net *net, struct fib6_info *rt, in fib6_rt_update() argument
6057 call_fib6_entry_notifiers(net, FIB_EVENT_ENTRY_REPLACE, rt, NULL); in fib6_rt_update()
6059 skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any()); in fib6_rt_update()
6063 err = rt6_fill_node(net, skb, rt, NULL, NULL, NULL, 0, in fib6_rt_update()
6445 DEFINE_BPF_ITER_FUNC(ipv6_route, struct bpf_iter_meta *meta, struct fib6_info *rt)
6461 { offsetof(struct bpf_iter__ipv6_route, rt),