Lines Matching refs:rt
111 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_del_init(&rt->dst.rt_uncached); in rt6_uncached_list_flush_dev()
228 const struct rt6_info *rt = dst_rt6_info(dst); in ip6_dst_neigh_lookup() local
230 return ip6_neigh_lookup(rt6_nexthop(rt, &in6addr_any), in ip6_dst_neigh_lookup()
236 const struct rt6_info *rt = dst_rt6_info(dst); in ip6_confirm_neigh() local
239 daddr = choose_neigh_daddr(rt6_nexthop(rt, &in6addr_any), NULL, daddr); in ip6_confirm_neigh()
333 static void rt6_info_init(struct rt6_info *rt) in rt6_info_init() argument
335 memset_after(rt, 0, dst); in rt6_info_init()
342 struct rt6_info *rt = dst_alloc(&net->ipv6.ip6_dst_ops, dev, in ip6_dst_alloc() local
345 if (rt) { in ip6_dst_alloc()
346 rt6_info_init(rt); in ip6_dst_alloc()
350 return rt; in ip6_dst_alloc()
356 struct rt6_info *rt = dst_rt6_info(dst); in ip6_dst_destroy() local
361 rt6_uncached_list_del(rt); in ip6_dst_destroy()
363 idev = rt->rt6i_idev; in ip6_dst_destroy()
365 rt->rt6i_idev = NULL; in ip6_dst_destroy()
369 from = unrcu_pointer(xchg(&rt->from, NULL)); in ip6_dst_destroy()
375 struct rt6_info *rt = dst_rt6_info(dst); in ip6_dst_ifdown() local
376 struct inet6_dev *idev = rt->rt6i_idev; in ip6_dst_ifdown()
383 rt->rt6i_idev = blackhole_idev; in ip6_dst_ifdown()
387 from = unrcu_pointer(xchg(&rt->from, NULL)); 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()
942 struct fib6_info *rt; in rt6_route_rcv() local
980 rt = rt6_get_dflt_router(net, gwaddr, dev); in rt6_route_rcv()
982 rt = rt6_get_route_info(net, prefix, rinfo->prefix_len, in rt6_route_rcv()
985 if (rt && !lifetime) { in rt6_route_rcv()
986 ip6_del_rt(net, rt, false); in rt6_route_rcv()
987 rt = NULL; in rt6_route_rcv()
990 if (!rt && lifetime) in rt6_route_rcv()
991 rt = rt6_add_route_info(net, prefix, rinfo->prefix_len, gwaddr, in rt6_route_rcv()
993 else if (rt) in rt6_route_rcv()
994 rt->fib6_flags = RTF_ROUTEINFO | in rt6_route_rcv()
995 (rt->fib6_flags & ~RTF_PREF_MASK) | RTF_PREF(pref); in rt6_route_rcv()
997 if (rt) { in rt6_route_rcv()
998 table = rt->fib6_table; in rt6_route_rcv()
1002 fib6_clean_expires(rt); in rt6_route_rcv()
1003 fib6_remove_gc_list(rt); in rt6_route_rcv()
1005 fib6_set_expires(rt, jiffies + HZ * lifetime); in rt6_route_rcv()
1006 fib6_add_gc_list(rt); in rt6_route_rcv()
1011 fib6_info_release(rt); in rt6_route_rcv()
1064 static unsigned short fib6_info_dst_flags(struct fib6_info *rt) in fib6_info_dst_flags() argument
1068 if (rt->dst_nocount) in fib6_info_dst_flags()
1070 if (rt->dst_nopolicy) in fib6_info_dst_flags()
1076 static void ip6_rt_init_dst_reject(struct rt6_info *rt, u8 fib6_type) in ip6_rt_init_dst_reject() argument
1078 rt->dst.error = ip6_rt_type_to_error(fib6_type); in ip6_rt_init_dst_reject()
1082 rt->dst.output = dst_discard_out; in ip6_rt_init_dst_reject()
1083 rt->dst.input = dst_discard; in ip6_rt_init_dst_reject()
1086 rt->dst.output = ip6_pkt_prohibit_out; in ip6_rt_init_dst_reject()
1087 rt->dst.input = ip6_pkt_prohibit; in ip6_rt_init_dst_reject()
1092 rt->dst.output = ip6_pkt_discard_out; in ip6_rt_init_dst_reject()
1093 rt->dst.input = ip6_pkt_discard; in ip6_rt_init_dst_reject()
1098 static void ip6_rt_init_dst(struct rt6_info *rt, const struct fib6_result *res) in ip6_rt_init_dst() argument
1103 ip6_rt_init_dst_reject(rt, res->fib6_type); in ip6_rt_init_dst()
1107 rt->dst.error = 0; in ip6_rt_init_dst()
1108 rt->dst.output = ip6_output; in ip6_rt_init_dst()
1111 rt->dst.input = ip6_input; in ip6_rt_init_dst()
1113 rt->dst.input = ip6_mc_input; in ip6_rt_init_dst()
1115 rt->dst.input = ip6_forward; in ip6_rt_init_dst()
1119 rt->dst.lwtstate = lwtstate_get(res->nh->fib_nh_lws); in ip6_rt_init_dst()
1120 lwtunnel_set_redirect(&rt->dst); in ip6_rt_init_dst()
1123 rt->dst.lastuse = jiffies; in ip6_rt_init_dst()
1127 static void rt6_set_from(struct rt6_info *rt, struct fib6_info *from) in rt6_set_from() argument
1129 rt->rt6i_flags &= ~RTF_EXPIRES; in rt6_set_from()
1130 rcu_assign_pointer(rt->from, from); in rt6_set_from()
1131 ip_dst_init_metrics(&rt->dst, from->fib6_metrics); in rt6_set_from()
1135 static void ip6_rt_copy_init(struct rt6_info *rt, const struct fib6_result *res) in ip6_rt_copy_init() argument
1141 ip6_rt_init_dst(rt, res); in ip6_rt_copy_init()
1143 rt->rt6i_dst = f6i->fib6_dst; in ip6_rt_copy_init()
1144 rt->rt6i_idev = dev ? in6_dev_get(dev) : NULL; in ip6_rt_copy_init()
1145 rt->rt6i_flags = res->fib6_flags; in ip6_rt_copy_init()
1147 rt->rt6i_gateway = nh->fib_nh_gw6; in ip6_rt_copy_init()
1148 rt->rt6i_flags |= RTF_GATEWAY; in ip6_rt_copy_init()
1150 rt6_set_from(rt, f6i); in ip6_rt_copy_init()
1152 rt->rt6i_src = f6i->fib6_src; in ip6_rt_copy_init()
1176 struct rt6_info *rt = *prt; in ip6_hold_safe() local
1178 if (dst_hold_safe(&rt->dst)) in ip6_hold_safe()
1181 rt = net->ipv6.ip6_null_entry; in ip6_hold_safe()
1182 dst_hold(&rt->dst); in ip6_hold_safe()
1184 rt = NULL; in ip6_hold_safe()
1186 *prt = rt; in ip6_hold_safe()
1225 struct rt6_info *rt; in ip6_pol_route_lookup() local
1242 rt = net->ipv6.ip6_null_entry; in ip6_pol_route_lookup()
1243 dst_hold(&rt->dst); in ip6_pol_route_lookup()
1253 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route_lookup()
1254 if (rt) { in ip6_pol_route_lookup()
1255 if (ip6_hold_safe(net, &rt)) in ip6_pol_route_lookup()
1256 dst_use_noref(&rt->dst, jiffies); in ip6_pol_route_lookup()
1259 rt = ip6_create_rt_rcu(&res); in ip6_pol_route_lookup()
1267 return rt; in ip6_pol_route_lookup()
1309 static int __ip6_ins_rt(struct fib6_info *rt, struct nl_info *info, in __ip6_ins_rt() argument
1315 table = rt->fib6_table; in __ip6_ins_rt()
1317 err = fib6_add(&table->tb6_root, rt, info, extack); in __ip6_ins_rt()
1323 int ip6_ins_rt(struct net *net, struct fib6_info *rt) in ip6_ins_rt() argument
1327 return __ip6_ins_rt(rt, &info, NULL); in ip6_ins_rt()
1336 struct rt6_info *rt; in ip6_rt_cache_alloc() local
1346 rt = ip6_dst_alloc(dev_net(dev), dev, 0); in ip6_rt_cache_alloc()
1347 if (!rt) { in ip6_rt_cache_alloc()
1352 ip6_rt_copy_init(rt, res); in ip6_rt_cache_alloc()
1353 rt->rt6i_flags |= RTF_CACHE; in ip6_rt_cache_alloc()
1354 rt->rt6i_dst.addr = *daddr; in ip6_rt_cache_alloc()
1355 rt->rt6i_dst.plen = 128; in ip6_rt_cache_alloc()
1360 rt->rt6i_flags |= RTF_ANYCAST; in ip6_rt_cache_alloc()
1362 if (rt->rt6i_src.plen && saddr) { in ip6_rt_cache_alloc()
1363 rt->rt6i_src.addr = *saddr; in ip6_rt_cache_alloc()
1364 rt->rt6i_src.plen = 128; in ip6_rt_cache_alloc()
1369 return rt; in ip6_rt_cache_alloc()
1842 const struct rt6_info *rt) in fib6_nh_remove_exception() argument
1863 src_key = &rt->rt6i_src.addr; in fib6_nh_remove_exception()
1866 &rt->rt6i_dst.addr, in fib6_nh_remove_exception()
1880 struct rt6_info *rt; member
1889 err = fib6_nh_remove_exception(nh, arg->plen, arg->rt); in rt6_nh_remove_exception_rt()
1896 static int rt6_remove_exception_rt(struct rt6_info *rt) in rt6_remove_exception_rt() argument
1900 from = rcu_dereference(rt->from); in rt6_remove_exception_rt()
1901 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_remove_exception_rt()
1906 .rt = rt, in rt6_remove_exception_rt()
1919 from->fib6_src.plen, rt); in rt6_remove_exception_rt()
1926 const struct rt6_info *rt) in fib6_nh_update_exception() argument
1941 src_key = &rt->rt6i_src.addr; in fib6_nh_update_exception()
1943 rt6_ex = __rt6_find_exception_rcu(&bucket, &rt->rt6i_dst.addr, src_key); in fib6_nh_update_exception()
1971 static void rt6_update_exception_stamp_rt(struct rt6_info *rt) in rt6_update_exception_stamp_rt() argument
1978 from = rcu_dereference(rt->from); in rt6_update_exception_stamp_rt()
1979 if (!from || !(rt->rt6i_flags & RTF_CACHE)) in rt6_update_exception_stamp_rt()
1984 .dev = rt->dst.dev, in rt6_update_exception_stamp_rt()
1985 .gw = &rt->rt6i_gateway, in rt6_update_exception_stamp_rt()
1996 fib6_nh_update_exception(fib6_nh, from->fib6_src.plen, rt); in rt6_update_exception_stamp_rt()
2002 struct rt6_info *rt, int mtu) in rt6_mtu_change_route_allowed() argument
2014 if (dst_mtu(&rt->dst) >= mtu) in rt6_mtu_change_route_allowed()
2017 if (dst_mtu(&rt->dst) == idev->cnf.mtu6) in rt6_mtu_change_route_allowed()
2090 struct rt6_info *rt = rt6_ex->rt6i; in rt6_age_examine_exception() local
2098 if (!(rt->rt6i_flags & RTF_EXPIRES)) { in rt6_age_examine_exception()
2099 if (time_after_eq(now, rt->dst.lastuse + gc_args->timeout)) { in rt6_age_examine_exception()
2100 pr_debug("aging clone %p\n", rt); in rt6_age_examine_exception()
2104 } else if (time_after(jiffies, rt->dst.expires)) { in rt6_age_examine_exception()
2105 pr_debug("purging expired route %p\n", rt); in rt6_age_examine_exception()
2110 if (rt->rt6i_flags & RTF_GATEWAY) { in rt6_age_examine_exception()
2113 neigh = __ipv6_neigh_lookup_noref(rt->dst.dev, &rt->rt6i_gateway); in rt6_age_examine_exception()
2117 rt); in rt6_age_examine_exception()
2218 struct rt6_info *rt = NULL; in ip6_pol_route() local
2238 rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr); in ip6_pol_route()
2239 if (rt) { in ip6_pol_route()
2248 rt = ip6_rt_cache_alloc(&res, &fl6->daddr, NULL); in ip6_pol_route()
2250 if (rt) { in ip6_pol_route()
2256 rt6_uncached_list_add(rt); in ip6_pol_route()
2259 return rt; in ip6_pol_route()
2264 rt = rt6_get_pcpu_route(&res); in ip6_pol_route()
2266 if (!rt) in ip6_pol_route()
2267 rt = rt6_make_pcpu_route(net, &res); in ip6_pol_route()
2272 if (!rt) in ip6_pol_route()
2273 rt = net->ipv6.ip6_null_entry; in ip6_pol_route()
2275 ip6_hold_safe(net, &rt); in ip6_pol_route()
2278 return rt; in ip6_pol_route()
2666 struct rt6_info *rt, *ort = dst_rt6_info(dst_orig); in ip6_blackhole_route() local
2670 rt = dst_alloc(&ip6_dst_blackhole_ops, loopback_dev, in ip6_blackhole_route()
2672 if (rt) { in ip6_blackhole_route()
2673 rt6_info_init(rt); in ip6_blackhole_route()
2676 new = &rt->dst; in ip6_blackhole_route()
2683 rt->rt6i_idev = in6_dev_get(loopback_dev); in ip6_blackhole_route()
2684 rt->rt6i_gateway = ort->rt6i_gateway; in ip6_blackhole_route()
2685 rt->rt6i_flags = ort->rt6i_flags & ~RTF_PCPU; in ip6_blackhole_route()
2687 memcpy(&rt->rt6i_dst, &ort->rt6i_dst, sizeof(struct rt6key)); in ip6_blackhole_route()
2689 memcpy(&rt->rt6i_src, &ort->rt6i_src, sizeof(struct rt6key)); in ip6_blackhole_route()
2714 static struct dst_entry *rt6_check(struct rt6_info *rt, in rt6_check() argument
2724 if (rt6_check_expired(rt)) in rt6_check()
2727 return &rt->dst; in rt6_check()
2730 static struct dst_entry *rt6_dst_from_check(struct rt6_info *rt, in rt6_dst_from_check() argument
2734 if (!__rt6_check_expired(rt) && in rt6_dst_from_check()
2735 rt->dst.obsolete == DST_OBSOLETE_FORCE_CHK && in rt6_dst_from_check()
2737 return &rt->dst; in rt6_dst_from_check()
2747 struct rt6_info *rt; in ip6_dst_check() local
2749 rt = dst_rt6_info(dst); in ip6_dst_check()
2751 if (rt->sernum) in ip6_dst_check()
2752 return rt6_is_valid(rt) ? dst : NULL; in ip6_dst_check()
2761 from = rcu_dereference(rt->from); in ip6_dst_check()
2763 if (from && (rt->rt6i_flags & RTF_PCPU || in ip6_dst_check()
2764 unlikely(!list_empty(&rt->dst.rt_uncached)))) in ip6_dst_check()
2765 dst_ret = rt6_dst_from_check(rt, from, cookie); in ip6_dst_check()
2767 dst_ret = rt6_check(rt, from, cookie); in ip6_dst_check()
2778 struct rt6_info *rt = dst_rt6_info(dst); in ip6_negative_advice() local
2780 if (rt->rt6i_flags & RTF_CACHE) { in ip6_negative_advice()
2782 if (rt6_check_expired(rt)) { in ip6_negative_advice()
2787 rt6_remove_exception_rt(rt); in ip6_negative_advice()
2797 struct rt6_info *rt; in ip6_link_failure() local
2801 rt = dst_rt6_info(skb_dst(skb)); in ip6_link_failure()
2802 if (rt) { in ip6_link_failure()
2804 if (rt->rt6i_flags & RTF_CACHE) { in ip6_link_failure()
2805 rt6_remove_exception_rt(rt); in ip6_link_failure()
2810 from = rcu_dereference(rt->from); in ip6_link_failure()
2813 if (fn && (rt->rt6i_flags & RTF_DEFAULT)) in ip6_link_failure()
2837 static void rt6_do_update_pmtu(struct rt6_info *rt, u32 mtu) in rt6_do_update_pmtu() argument
2839 struct net *net = dev_net(rt->dst.dev); in rt6_do_update_pmtu()
2841 dst_metric_set(&rt->dst, RTAX_MTU, mtu); in rt6_do_update_pmtu()
2842 rt->rt6i_flags |= RTF_MODIFIED; in rt6_do_update_pmtu()
2843 rt6_update_expires(rt, net->ipv6.sysctl.ip6_rt_mtu_expires); in rt6_do_update_pmtu()
2846 static bool rt6_cache_allowed_for_pmtu(const struct rt6_info *rt) in rt6_cache_allowed_for_pmtu() argument
2848 return !(rt->rt6i_flags & RTF_CACHE) && in rt6_cache_allowed_for_pmtu()
2849 (rt->rt6i_flags & RTF_PCPU || rcu_access_pointer(rt->from)); in rt6_cache_allowed_for_pmtu()
3066 struct fib6_info *rt; in __ip6_route_redirect() local
3083 res.f6i = rt; in __ip6_route_redirect()
3084 if (fib6_check_expired(rt)) in __ip6_route_redirect()
3086 if (rt->fib6_flags & RTF_REJECT) in __ip6_route_redirect()
3088 if (unlikely(rt->nh)) { in __ip6_route_redirect()
3089 if (nexthop_is_blackhole(rt->nh)) in __ip6_route_redirect()
3092 if (nexthop_for_each_fib6_nh(rt->nh, in __ip6_route_redirect()
3097 res.nh = rt->fib6_nh; in __ip6_route_redirect()
3104 if (!rt) in __ip6_route_redirect()
3105 rt = net->ipv6.fib6_null_entry; in __ip6_route_redirect()
3106 else if (rt->fib6_flags & RTF_REJECT) { in __ip6_route_redirect()
3111 if (rt == net->ipv6.fib6_null_entry) { in __ip6_route_redirect()
3117 res.f6i = rt; in __ip6_route_redirect()
3118 res.nh = rt->fib6_nh; in __ip6_route_redirect()
3238 struct rt6_info *rt; in ip6_mtu_from_fib6() local
3247 rt = rt6_find_cached_rt(res, daddr, saddr); in ip6_mtu_from_fib6()
3248 if (unlikely(rt)) { in ip6_mtu_from_fib6()
3249 mtu = dst_metric_raw(&rt->dst, RTAX_MTU); in ip6_mtu_from_fib6()
3268 struct rt6_info *rt; in icmp6_dst_alloc() local
3275 rt = ip6_dst_alloc(net, dev, 0); in icmp6_dst_alloc()
3276 if (unlikely(!rt)) { in icmp6_dst_alloc()
3282 rt->dst.input = ip6_input; in icmp6_dst_alloc()
3283 rt->dst.output = ip6_output; in icmp6_dst_alloc()
3284 rt->rt6i_gateway = fl6->daddr; in icmp6_dst_alloc()
3285 rt->rt6i_dst.addr = fl6->daddr; in icmp6_dst_alloc()
3286 rt->rt6i_dst.plen = 128; in icmp6_dst_alloc()
3287 rt->rt6i_idev = idev; in icmp6_dst_alloc()
3288 dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 0); in icmp6_dst_alloc()
3293 rt6_uncached_list_add(rt); in icmp6_dst_alloc()
3295 dst = xfrm_lookup(net, &rt->dst, flowi6_to_flowi(fl6), NULL, 0); in icmp6_dst_alloc()
3695 struct fib6_info *rt = NULL; in ip6_route_info_create() local
3761 rt = fib6_info_alloc(gfp_flags, !nh); in ip6_route_info_create()
3762 if (!rt) in ip6_route_info_create()
3765 rt->fib6_metrics = ip_fib_metrics_init(cfg->fc_mx, cfg->fc_mx_len, in ip6_route_info_create()
3767 if (IS_ERR(rt->fib6_metrics)) { in ip6_route_info_create()
3768 err = PTR_ERR(rt->fib6_metrics); in ip6_route_info_create()
3770 rt->fib6_metrics = (struct dst_metrics *)&dst_default_metrics; in ip6_route_info_create()
3775 rt->dst_nocount = true; in ip6_route_info_create()
3778 fib6_set_expires(rt, jiffies + in ip6_route_info_create()
3783 rt->fib6_protocol = cfg->fc_protocol; in ip6_route_info_create()
3785 rt->fib6_table = table; in ip6_route_info_create()
3786 rt->fib6_metric = cfg->fc_metric; in ip6_route_info_create()
3787 rt->fib6_type = cfg->fc_type ? : RTN_UNICAST; in ip6_route_info_create()
3788 rt->fib6_flags = cfg->fc_flags & ~RTF_GATEWAY; in ip6_route_info_create()
3790 ipv6_addr_prefix(&rt->fib6_dst.addr, &cfg->fc_dst, cfg->fc_dst_len); in ip6_route_info_create()
3791 rt->fib6_dst.plen = cfg->fc_dst_len; in ip6_route_info_create()
3794 ipv6_addr_prefix(&rt->fib6_src.addr, &cfg->fc_src, cfg->fc_src_len); in ip6_route_info_create()
3795 rt->fib6_src.plen = cfg->fc_src_len; in ip6_route_info_create()
3798 if (rt->fib6_src.plen) { in ip6_route_info_create()
3806 rt->nh = nh; in ip6_route_info_create()
3807 fib6_nh = nexthop_fib6_nh(rt->nh); in ip6_route_info_create()
3809 err = fib6_nh_init(net, rt->fib6_nh, cfg, gfp_flags, extack); in ip6_route_info_create()
3813 fib6_nh = rt->fib6_nh; in ip6_route_info_create()
3819 if (fib6_is_reject(cfg->fc_flags, rt->fib6_nh->fib_nh_dev, in ip6_route_info_create()
3821 rt->fib6_flags = RTF_REJECT | RTF_NONEXTHOP; in ip6_route_info_create()
3832 rt->fib6_prefsrc.addr = cfg->fc_prefsrc; in ip6_route_info_create()
3833 rt->fib6_prefsrc.plen = 128; in ip6_route_info_create()
3835 rt->fib6_prefsrc.plen = 0; in ip6_route_info_create()
3837 return rt; in ip6_route_info_create()
3839 fib6_info_release(rt); in ip6_route_info_create()
3842 ip_fib_metrics_put(rt->fib6_metrics); in ip6_route_info_create()
3843 kfree(rt); in ip6_route_info_create()
3850 struct fib6_info *rt; in ip6_route_add() local
3853 rt = ip6_route_info_create(cfg, gfp_flags, extack); in ip6_route_add()
3854 if (IS_ERR(rt)) in ip6_route_add()
3855 return PTR_ERR(rt); in ip6_route_add()
3857 err = __ip6_ins_rt(rt, &cfg->fc_nlinfo, extack); in ip6_route_add()
3858 fib6_info_release(rt); in ip6_route_add()
3863 static int __ip6_del_rt(struct fib6_info *rt, struct nl_info *info) in __ip6_del_rt() argument
3869 if (rt == net->ipv6.fib6_null_entry) { in __ip6_del_rt()
3874 table = rt->fib6_table; in __ip6_del_rt()
3876 err = fib6_del(rt, info); in __ip6_del_rt()
3880 fib6_info_release(rt); in __ip6_del_rt()
3884 int ip6_del_rt(struct net *net, struct fib6_info *rt, bool skip_notify) in ip6_del_rt() argument
3891 return __ip6_del_rt(rt, &info); in ip6_del_rt()
3894 static int __ip6_del_rt_siblings(struct fib6_info *rt, struct fib6_config *cfg) in __ip6_del_rt_siblings() argument
3902 if (rt == net->ipv6.fib6_null_entry) in __ip6_del_rt_siblings()
3904 table = rt->fib6_table; in __ip6_del_rt_siblings()
3907 if (rt->fib6_nsiblings && cfg->fc_delete_all_nh) { in __ip6_del_rt_siblings()
3912 skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any()); in __ip6_del_rt_siblings()
3916 if (rt6_fill_node(net, skb, rt, NULL, in __ip6_del_rt_siblings()
3931 fn = rcu_dereference_protected(rt->fib6_node, in __ip6_del_rt_siblings()
3933 if (rcu_access_pointer(fn->leaf) == rt) { in __ip6_del_rt_siblings()
3936 last_sibling = list_last_entry(&rt->fib6_siblings, in __ip6_del_rt_siblings()
3948 rt, rt->fib6_nsiblings, in __ip6_del_rt_siblings()
3952 &rt->fib6_siblings, in __ip6_del_rt_siblings()
3960 err = fib6_del(rt, info); in __ip6_del_rt_siblings()
3964 fib6_info_release(rt); in __ip6_del_rt_siblings()
3973 static int __ip6_del_cached_rt(struct rt6_info *rt, struct fib6_config *cfg) in __ip6_del_cached_rt() argument
3977 if (cfg->fc_ifindex && rt->dst.dev->ifindex != cfg->fc_ifindex) in __ip6_del_cached_rt()
3981 !ipv6_addr_equal(&cfg->fc_gateway, &rt->rt6i_gateway)) in __ip6_del_cached_rt()
3984 rc = rt6_remove_exception_rt(rt); in __ip6_del_cached_rt()
3989 static int ip6_del_cached_rt(struct fib6_config *cfg, struct fib6_info *rt, in ip6_del_cached_rt() argument
3993 .f6i = rt, in ip6_del_cached_rt()
4033 struct fib6_info *rt; in ip6_route_del() local
4054 if (rt->nh && cfg->fc_nh_id && in ip6_route_del()
4055 rt->nh->id != cfg->fc_nh_id) in ip6_route_del()
4061 if (rt->nh) { in ip6_route_del()
4062 rc = ip6_del_cached_rt_nh(cfg, rt); in ip6_route_del()
4066 nh = rt->fib6_nh; in ip6_route_del()
4067 rc = ip6_del_cached_rt(cfg, rt, nh); in ip6_route_del()
4076 if (cfg->fc_metric && cfg->fc_metric != rt->fib6_metric) in ip6_route_del()
4079 cfg->fc_protocol != rt->fib6_protocol) in ip6_route_del()
4082 if (rt->nh) { in ip6_route_del()
4083 if (!fib6_info_hold_safe(rt)) in ip6_route_del()
4087 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
4092 nh = rt->fib6_nh; in ip6_route_del()
4100 if (!fib6_info_hold_safe(rt)) in ip6_route_del()
4106 return __ip6_del_rt(rt, &cfg->fc_nlinfo); in ip6_route_del()
4108 return __ip6_del_rt_siblings(rt, cfg); in ip6_route_del()
4119 struct rt6_info *rt, *nrt = NULL; in rt6_do_redirect() local
4179 rt = dst_rt6_info(dst); in rt6_do_redirect()
4180 if (rt->rt6i_flags & RTF_REJECT) { in rt6_do_redirect()
4189 dst_confirm_neigh(&rt->dst, &ipv6_hdr(skb)->saddr); in rt6_do_redirect()
4207 res.f6i = rcu_dereference(rt->from); in rt6_do_redirect()
4214 .gw = &rt->rt6i_gateway, in rt6_do_redirect()
4248 netevent.old = &rt->dst; in rt6_do_redirect()
4268 struct fib6_info *rt = NULL; in rt6_get_route_info() local
4282 if (rt->nh) in rt6_get_route_info()
4284 if (rt->fib6_nh->fib_nh_dev->ifindex != ifindex) in rt6_get_route_info()
4286 if (!(rt->fib6_flags & RTF_ROUTEINFO) || in rt6_get_route_info()
4287 !rt->fib6_nh->fib_nh_gw_family) in rt6_get_route_info()
4289 if (!ipv6_addr_equal(&rt->fib6_nh->fib_nh_gw6, gwaddr)) in rt6_get_route_info()
4291 if (!fib6_info_hold_safe(rt)) in rt6_get_route_info()
4297 return rt; in rt6_get_route_info()
4338 struct fib6_info *rt; in rt6_get_dflt_router() local
4350 if (rt->nh) in rt6_get_dflt_router()
4353 nh = rt->fib6_nh; in rt6_get_dflt_router()
4355 ((rt->fib6_flags & (RTF_ADDRCONF | RTF_DEFAULT)) == (RTF_ADDRCONF | RTF_DEFAULT)) && in rt6_get_dflt_router()
4359 if (rt && !fib6_info_hold_safe(rt)) in rt6_get_dflt_router()
4360 rt = NULL; in rt6_get_dflt_router()
4362 return rt; in rt6_get_dflt_router()
4402 struct fib6_info *rt; in __rt6_purge_dflt_routers() local
4407 struct net_device *dev = fib6_info_nh_dev(rt); in __rt6_purge_dflt_routers()
4410 if (rt->fib6_flags & (RTF_DEFAULT | RTF_ADDRCONF) && in __rt6_purge_dflt_routers()
4412 fib6_info_hold_safe(rt)) { in __rt6_purge_dflt_routers()
4414 ip6_del_rt(net, rt, false); in __rt6_purge_dflt_routers()
4607 static int fib6_remove_prefsrc(struct fib6_info *rt, void *arg) in fib6_remove_prefsrc() argument
4612 if (!rt->nh && in fib6_remove_prefsrc()
4613 rt != net->ipv6.fib6_null_entry && in fib6_remove_prefsrc()
4614 ipv6_addr_equal(addr, &rt->fib6_prefsrc.addr) && in fib6_remove_prefsrc()
4615 !ipv6_chk_addr(net, addr, rt->fib6_nh->fib_nh_dev, 0)) { in fib6_remove_prefsrc()
4618 rt->fib6_prefsrc.plen = 0; in fib6_remove_prefsrc()
4637 static int fib6_clean_tohost(struct fib6_info *rt, void *arg) in fib6_clean_tohost() argument
4643 if (rt->nh) in fib6_clean_tohost()
4646 nh = rt->fib6_nh; in fib6_clean_tohost()
4647 if (((rt->fib6_flags & RTF_RA_ROUTER) == RTF_RA_ROUTER) && in fib6_clean_tohost()
4673 static struct fib6_info *rt6_multipath_first_sibling(const struct fib6_info *rt) in rt6_multipath_first_sibling() argument
4678 fn = rcu_dereference_protected(rt->fib6_node, in rt6_multipath_first_sibling()
4679 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4681 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4683 if (iter->fib6_metric == rt->fib6_metric && in rt6_multipath_first_sibling()
4687 lockdep_is_held(&rt->fib6_table->tb6_lock)); in rt6_multipath_first_sibling()
4694 static bool rt6_is_dead(const struct fib6_info *rt) in rt6_is_dead() argument
4696 if (rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD || in rt6_is_dead()
4697 (rt->fib6_nh->fib_nh_flags & RTNH_F_LINKDOWN && in rt6_is_dead()
4698 ip6_ignore_linkdown(rt->fib6_nh->fib_nh_dev))) in rt6_is_dead()
4704 static int rt6_multipath_total_weight(const struct fib6_info *rt) in rt6_multipath_total_weight() argument
4709 if (!rt6_is_dead(rt)) in rt6_multipath_total_weight()
4710 total += rt->fib6_nh->fib_nh_weight; in rt6_multipath_total_weight()
4712 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) { in rt6_multipath_total_weight()
4720 static void rt6_upper_bound_set(struct fib6_info *rt, int *weight, int total) in rt6_upper_bound_set() argument
4724 if (!rt6_is_dead(rt)) { in rt6_upper_bound_set()
4725 *weight += rt->fib6_nh->fib_nh_weight; in rt6_upper_bound_set()
4729 atomic_set(&rt->fib6_nh->fib_nh_upper_bound, upper_bound); in rt6_upper_bound_set()
4732 static void rt6_multipath_upper_bound_set(struct fib6_info *rt, int total) in rt6_multipath_upper_bound_set() argument
4737 rt6_upper_bound_set(rt, &weight, total); in rt6_multipath_upper_bound_set()
4739 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_upper_bound_set()
4743 void rt6_multipath_rebalance(struct fib6_info *rt) in rt6_multipath_rebalance() argument
4752 if (!rt->fib6_nsiblings || rt->should_flush) in rt6_multipath_rebalance()
4759 first = rt6_multipath_first_sibling(rt); in rt6_multipath_rebalance()
4767 static int fib6_ifup(struct fib6_info *rt, void *p_arg) in fib6_ifup() argument
4772 if (rt != net->ipv6.fib6_null_entry && !rt->nh && in fib6_ifup()
4773 rt->fib6_nh->fib_nh_dev == arg->dev) { in fib6_ifup()
4774 rt->fib6_nh->fib_nh_flags &= ~arg->nh_flags; in fib6_ifup()
4775 fib6_update_sernum_upto_root(net, rt); in fib6_ifup()
4776 rt6_multipath_rebalance(rt); in fib6_ifup()
4798 static bool rt6_multipath_uses_dev(const struct fib6_info *rt, in rt6_multipath_uses_dev() argument
4803 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_uses_dev()
4805 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_uses_dev()
4812 static void rt6_multipath_flush(struct fib6_info *rt) in rt6_multipath_flush() argument
4816 rt->should_flush = 1; in rt6_multipath_flush()
4817 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_flush()
4821 static unsigned int rt6_multipath_dead_count(const struct fib6_info *rt, in rt6_multipath_dead_count() argument
4827 if (rt->fib6_nh->fib_nh_dev == down_dev || in rt6_multipath_dead_count()
4828 rt->fib6_nh->fib_nh_flags & RTNH_F_DEAD) in rt6_multipath_dead_count()
4830 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_dead_count()
4838 static void rt6_multipath_nh_flags_set(struct fib6_info *rt, in rt6_multipath_nh_flags_set() argument
4844 if (rt->fib6_nh->fib_nh_dev == dev) in rt6_multipath_nh_flags_set()
4845 rt->fib6_nh->fib_nh_flags |= nh_flags; in rt6_multipath_nh_flags_set()
4846 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) in rt6_multipath_nh_flags_set()
4852 static int fib6_ifdown(struct fib6_info *rt, void *p_arg) in fib6_ifdown() argument
4858 if (rt == net->ipv6.fib6_null_entry || rt->nh) in fib6_ifdown()
4863 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4865 if (rt->should_flush) in fib6_ifdown()
4867 if (!rt->fib6_nsiblings) in fib6_ifdown()
4868 return rt->fib6_nh->fib_nh_dev == dev ? -1 : 0; in fib6_ifdown()
4869 if (rt6_multipath_uses_dev(rt, dev)) { in fib6_ifdown()
4872 count = rt6_multipath_dead_count(rt, dev); in fib6_ifdown()
4873 if (rt->fib6_nsiblings + 1 == count) { in fib6_ifdown()
4874 rt6_multipath_flush(rt); in fib6_ifdown()
4877 rt6_multipath_nh_flags_set(rt, dev, RTNH_F_DEAD | in fib6_ifdown()
4879 fib6_update_sernum(net, rt); in fib6_ifdown()
4880 rt6_multipath_rebalance(rt); in fib6_ifdown()
4884 if (rt->fib6_nh->fib_nh_dev != dev || in fib6_ifdown()
4885 rt->fib6_flags & (RTF_LOCAL | RTF_ANYCAST)) in fib6_ifdown()
4887 rt->fib6_nh->fib_nh_flags |= RTNH_F_LINKDOWN; in fib6_ifdown()
4888 rt6_multipath_rebalance(rt); in fib6_ifdown()
5165 struct fib6_info *rt, in ip6_route_info_append() argument
5173 if (rt6_duplicate_nexthop(nh->fib6_info, rt)) in ip6_route_info_append()
5180 nh->fib6_info = rt; in ip6_route_info_append()
5187 static void ip6_route_mpath_notify(struct fib6_info *rt, in ip6_route_mpath_notify() argument
5201 rt = list_first_or_null_rcu(&rt_last->fib6_siblings, in ip6_route_mpath_notify()
5206 if (rt) in ip6_route_mpath_notify()
5207 inet6_rt_notify(RTM_NEWROUTE, rt, info, nlflags); in ip6_route_mpath_notify()
5212 static bool ip6_route_mpath_should_notify(const struct fib6_info *rt) in ip6_route_mpath_should_notify() argument
5214 bool rt_can_ecmp = rt6_qualify_for_ecmp(rt); in ip6_route_mpath_should_notify()
5220 fn = rcu_dereference(rt->fib6_node); in ip6_route_mpath_should_notify()
5228 if (rt == leaf || in ip6_route_mpath_should_notify()
5229 (rt_can_ecmp && rt->fib6_metric == leaf->fib6_metric && in ip6_route_mpath_should_notify()
5258 struct fib6_info *rt; in ip6_route_multipath_add() local
5309 rt = ip6_route_info_create(&r_cfg, GFP_KERNEL, extack); in ip6_route_multipath_add()
5310 if (IS_ERR(rt)) { in ip6_route_multipath_add()
5311 err = PTR_ERR(rt); in ip6_route_multipath_add()
5312 rt = NULL; in ip6_route_multipath_add()
5315 if (!rt6_qualify_for_ecmp(rt)) { in ip6_route_multipath_add()
5319 fib6_info_release(rt); in ip6_route_multipath_add()
5323 rt->fib6_nh->fib_nh_weight = rtnh->rtnh_hops + 1; in ip6_route_multipath_add()
5326 rt, &r_cfg); in ip6_route_multipath_add()
5328 fib6_info_release(rt); in ip6_route_multipath_add()
5619 struct fib6_info *rt, struct dst_entry *dst, in rt6_fill_node() argument
5641 rt6_dst = &rt->fib6_dst; in rt6_fill_node()
5642 rt6_src = &rt->fib6_src; in rt6_fill_node()
5643 rt6_flags = rt->fib6_flags; in rt6_fill_node()
5651 if (rt->fib6_table) in rt6_fill_node()
5652 table = rt->fib6_table->tb6_id; in rt6_fill_node()
5659 rtm->rtm_type = rt->fib6_type; in rt6_fill_node()
5662 rtm->rtm_protocol = rt->fib6_protocol; in rt6_fill_node()
5698 if (ip6_route_get_saddr(net, rt, dest, 0, 0, &saddr_buf) == 0 && in rt6_fill_node()
5703 if (rt->fib6_prefsrc.plen) { in rt6_fill_node()
5705 saddr_buf = rt->fib6_prefsrc.addr; in rt6_fill_node()
5710 pmetrics = dst ? dst_metrics_ptr(dst) : rt->fib6_metrics->metrics; in rt6_fill_node()
5714 if (nla_put_u32(skb, RTA_PRIORITY, rt->fib6_metric)) in rt6_fill_node()
5731 } else if (rt->fib6_nsiblings) { in rt6_fill_node()
5739 if (fib_add_nexthop(skb, &rt->fib6_nh->nh_common, in rt6_fill_node()
5740 rt->fib6_nh->fib_nh_weight, AF_INET6, in rt6_fill_node()
5746 list_for_each_entry_rcu(sibling, &rt->fib6_siblings, in rt6_fill_node()
5760 } else if (rt->nh) { in rt6_fill_node()
5761 if (nla_put_u32(skb, RTA_NH_ID, rt->nh->id)) in rt6_fill_node()
5764 if (nexthop_is_blackhole(rt->nh)) in rt6_fill_node()
5768 rt6_fill_node_nexthop(skb, rt->nh, &nh_flags) < 0) in rt6_fill_node()
5773 if (fib_nexthop_info(skb, &rt->fib6_nh->nh_common, AF_INET6, in rt6_fill_node()
5781 expires = dst ? dst->expires : rt->expires; in rt6_fill_node()
5786 if (READ_ONCE(rt->offload)) in rt6_fill_node()
5788 if (READ_ONCE(rt->trap)) in rt6_fill_node()
5790 if (READ_ONCE(rt->offload_failed)) in rt6_fill_node()
5848 struct fib6_info *rt; member
5889 err = rt6_fill_node(dump->net, dump->skb, w->rt, in rt6_nh_dump_exceptions()
5906 int rt6_dump_route(struct fib6_info *rt, void *p_arg, unsigned int skip) in rt6_dump_route() argument
5914 if (rt == net->ipv6.fib6_null_entry) in rt6_dump_route()
5918 !(rt->fib6_flags & RTF_PREFIX_RT)) { in rt6_dump_route()
5923 ((filter->rt_type && rt->fib6_type != filter->rt_type) || in rt6_dump_route()
5924 (filter->dev && !fib6_info_uses_dev(rt, filter->dev)) || in rt6_dump_route()
5925 (filter->protocol && rt->fib6_protocol != filter->protocol))) { in rt6_dump_route()
5938 if (rt6_fill_node(net, arg->skb, rt, NULL, NULL, NULL, in rt6_dump_route()
5950 .rt = rt, in rt6_dump_route()
5957 if (rt->nh) { in rt6_dump_route()
5958 err = nexthop_for_each_fib6_nh(rt->nh, in rt6_dump_route()
5962 err = rt6_nh_dump_exceptions(rt->fib6_nh, &w); in rt6_dump_route()
6048 struct rt6_info *rt; in inet6_rtm_getroute() local
6134 rt = dst_rt6_info(dst); in inet6_rtm_getroute()
6135 if (rt->dst.error) { in inet6_rtm_getroute()
6136 err = rt->dst.error; in inet6_rtm_getroute()
6137 ip6_rt_put(rt); in inet6_rtm_getroute()
6141 if (rt == net->ipv6.ip6_null_entry) { in inet6_rtm_getroute()
6142 err = rt->dst.error; in inet6_rtm_getroute()
6143 ip6_rt_put(rt); in inet6_rtm_getroute()
6149 ip6_rt_put(rt); in inet6_rtm_getroute()
6154 skb_dst_set(skb, &rt->dst); in inet6_rtm_getroute()
6157 from = rcu_dereference(rt->from); in inet6_rtm_getroute()
6184 void inet6_rt_notify(int event, struct fib6_info *rt, struct nl_info *info, in inet6_rt_notify() argument
6195 skb = nlmsg_new(rt6_nlmsg_size(rt), GFP_ATOMIC); in inet6_rt_notify()
6199 err = rt6_fill_node(net, skb, rt, NULL, NULL, NULL, 0, in inet6_rt_notify()
6214 void fib6_rt_update(struct net *net, struct fib6_info *rt, in fib6_rt_update() argument
6221 skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any()); in fib6_rt_update()
6225 err = rt6_fill_node(net, skb, rt, NULL, NULL, NULL, 0, in fib6_rt_update()
6663 DEFINE_BPF_ITER_FUNC(ipv6_route, struct bpf_iter_meta *meta, struct fib6_info *rt)
6679 { offsetof(struct bpf_iter__ipv6_route, rt),