diff options
| -rw-r--r-- | include/net/ip6_fib.h | 4 | ||||
| -rw-r--r-- | include/net/ip6_route.h | 4 | ||||
| -rw-r--r-- | net/ipv6/addrconf.c | 9 | ||||
| -rw-r--r-- | net/ipv6/ip6_fib.c | 28 | ||||
| -rw-r--r-- | net/ipv6/route.c | 185 | ||||
| -rw-r--r-- | tools/testing/selftests/net/Makefile | 1 | ||||
| -rwxr-xr-x | tools/testing/selftests/net/fib_tests.sh | 429 |
7 files changed, 618 insertions, 42 deletions
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h index 44d96a91e745..ddf53dd1e948 100644 --- a/include/net/ip6_fib.h +++ b/include/net/ip6_fib.h @@ -173,7 +173,8 @@ struct rt6_info { unsigned short rt6i_nfheader_len; u8 rt6i_protocol; u8 exception_bucket_flushed:1, - unused:7; + should_flush:1, + unused:6; }; #define for_each_fib6_node_rt_rcu(fn) \ @@ -404,6 +405,7 @@ unsigned int fib6_tables_seq_read(struct net *net); int fib6_tables_dump(struct net *net, struct notifier_block *nb); void fib6_update_sernum(struct rt6_info *rt); +void fib6_update_sernum_upto_root(struct net *net, struct rt6_info *rt); #ifdef CONFIG_IPV6_MULTIPLE_TABLES int fib6_rules_init(void); diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h index 18e442ea93d8..34cd3b0c6ded 100644 --- a/include/net/ip6_route.h +++ b/include/net/ip6_route.h @@ -165,10 +165,12 @@ struct rt6_rtnl_dump_arg { }; int rt6_dump_route(struct rt6_info *rt, void *p_arg); -void rt6_ifdown(struct net *net, struct net_device *dev); void rt6_mtu_change(struct net_device *dev, unsigned int mtu); void rt6_remove_prefsrc(struct inet6_ifaddr *ifp); void rt6_clean_tohost(struct net *net, struct in6_addr *gateway); +void rt6_sync_up(struct net_device *dev, unsigned int nh_flags); +void rt6_disable_ip(struct net_device *dev, unsigned long event); +void rt6_sync_down_dev(struct net_device *dev, unsigned long event); static inline const struct rt6_info *skb_rt6_info(const struct sk_buff *skb) { diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index ed06b1190f05..2435f7ab070b 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -3438,6 +3438,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event, } else if (event == NETDEV_CHANGE) { if (!addrconf_link_ready(dev)) { /* device is still not ready. */ + rt6_sync_down_dev(dev, event); break; } @@ -3449,6 +3450,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event, * multicast snooping switches */ ipv6_mc_up(idev); + rt6_sync_up(dev, RTNH_F_LINKDOWN); break; } idev->if_flags |= IF_READY; @@ -3484,6 +3486,9 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event, if (run_pending) addrconf_dad_run(idev); + /* Device has an address by now */ + rt6_sync_up(dev, RTNH_F_DEAD); + /* * If the MTU changed during the interface down, * when the interface up, the changed MTU must be @@ -3577,6 +3582,7 @@ static bool addr_is_local(const struct in6_addr *addr) static int addrconf_ifdown(struct net_device *dev, int how) { + unsigned long event = how ? NETDEV_UNREGISTER : NETDEV_DOWN; struct net *net = dev_net(dev); struct inet6_dev *idev; struct inet6_ifaddr *ifa, *tmp; @@ -3586,8 +3592,7 @@ static int addrconf_ifdown(struct net_device *dev, int how) ASSERT_RTNL(); - rt6_ifdown(net, dev); - neigh_ifdown(&nd_tbl, dev); + rt6_disable_ip(dev, event); idev = __in6_dev_get(dev); if (!idev) diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c index a64d559fa513..edda5ad3b405 100644 --- a/net/ipv6/ip6_fib.c +++ b/net/ipv6/ip6_fib.c @@ -107,16 +107,13 @@ enum { void fib6_update_sernum(struct rt6_info *rt) { - struct fib6_table *table = rt->rt6i_table; struct net *net = dev_net(rt->dst.dev); struct fib6_node *fn; - spin_lock_bh(&table->tb6_lock); fn = rcu_dereference_protected(rt->rt6i_node, - lockdep_is_held(&table->tb6_lock)); + lockdep_is_held(&rt->rt6i_table->tb6_lock)); if (fn) fn->fn_sernum = fib6_new_sernum(net); - spin_unlock_bh(&table->tb6_lock); } /* @@ -1102,8 +1099,8 @@ void fib6_force_start_gc(struct net *net) jiffies + net->ipv6.sysctl.ip6_rt_gc_interval); } -static void fib6_update_sernum_upto_root(struct rt6_info *rt, - int sernum) +static void __fib6_update_sernum_upto_root(struct rt6_info *rt, + int sernum) { struct fib6_node *fn = rcu_dereference_protected(rt->rt6i_node, lockdep_is_held(&rt->rt6i_table->tb6_lock)); @@ -1117,6 +1114,11 @@ static void fib6_update_sernum_upto_root(struct rt6_info *rt, } } +void fib6_update_sernum_upto_root(struct net *net, struct rt6_info *rt) +{ + __fib6_update_sernum_upto_root(rt, fib6_new_sernum(net)); +} + /* * Add routing information to the routing tree. * <destination addr>/<source addr> @@ -1230,7 +1232,7 @@ int fib6_add(struct fib6_node *root, struct rt6_info *rt, err = fib6_add_rt2node(fn, rt, info, mxc, extack); if (!err) { - fib6_update_sernum_upto_root(rt, sernum); + __fib6_update_sernum_upto_root(rt, sernum); fib6_start_gc(info->nl_net, rt); } @@ -1887,7 +1889,7 @@ static int fib6_clean_node(struct fib6_walker *w) for_each_fib6_walker_rt(w) { res = c->func(rt, c->arg); - if (res < 0) { + if (res == -1) { w->leaf = rt; res = fib6_del(rt, &info); if (res) { @@ -1900,6 +1902,12 @@ static int fib6_clean_node(struct fib6_walker *w) continue; } return 0; + } else if (res == -2) { + if (WARN_ON(!rt->rt6i_nsiblings)) + continue; + rt = list_last_entry(&rt->rt6i_siblings, + struct rt6_info, rt6i_siblings); + continue; } WARN_ON(res != 0); } @@ -1911,7 +1919,8 @@ static int fib6_clean_node(struct fib6_walker *w) * Convenient frontend to tree walker. * * func is called on each route. - * It may return -1 -> delete this route. + * It may return -2 -> skip multipath route. + * -1 -> delete this route. * 0 -> continue walking */ @@ -2103,7 +2112,6 @@ static void fib6_net_exit(struct net *net) { unsigned int i; - rt6_ifdown(net, NULL); del_timer_sync(&net->ipv6.ip6_fib_timer); for (i = 0; i < FIB6_TABLE_HASHSZ; i++) { diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 2490280b3394..1054b059747f 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -474,7 +474,9 @@ static struct rt6_info *rt6_multipath_select(struct rt6_info *match, if (route_choosen == 0) { struct inet6_dev *idev = sibling->rt6i_idev; - if (!netif_carrier_ok(sibling->dst.dev) && + if (sibling->rt6i_nh_flags & RTNH_F_DEAD) + break; + if (sibling->rt6i_nh_flags & RTNH_F_LINKDOWN && idev->cnf.ignore_routes_with_linkdown) break; if (rt6_score_route(sibling, oif, strict) < 0) @@ -499,12 +501,15 @@ static inline struct rt6_info *rt6_device_match(struct net *net, struct rt6_info *local = NULL; struct rt6_info *sprt; - if (!oif && ipv6_addr_any(saddr)) - goto out; + if (!oif && ipv6_addr_any(saddr) && !(rt->rt6i_nh_flags & RTNH_F_DEAD)) + return rt; for (sprt = rt; sprt; sprt = rcu_dereference(sprt->rt6_next)) { struct net_device *dev = sprt->dst.dev; + if (sprt->rt6i_nh_flags & RTNH_F_DEAD) + continue; + if (oif) { if (dev->ifindex == oif) return sprt; @@ -533,8 +538,8 @@ static inline struct rt6_info *rt6_device_match(struct net *net, if (flags & RT6_LOOKUP_F_IFACE) return net->ipv6.ip6_null_entry; } -out: - return rt; + + return rt->rt6i_nh_flags & RTNH_F_DEAD ? net->ipv6.ip6_null_entry : rt; } #ifdef CONFIG_IPV6_ROUTER_PREF @@ -679,10 +684,12 @@ static struct rt6_info *find_match(struct rt6_info *rt, int oif, int strict, int m; bool match_do_rr = false; struct inet6_dev *idev = rt->rt6i_idev; - struct net_device *dev = rt->dst.dev; - if (dev && !netif_carrier_ok(dev) && - idev->cnf.ignore_routes_with_linkdown && + if (rt->rt6i_nh_flags & RTNH_F_DEAD) + goto out; + + if (idev->cnf.ignore_routes_with_linkdown && + rt->rt6i_nh_flags & RTNH_F_LINKDOWN && !(strict & RT6_LOOKUP_F_IGNORE_LINKSTATE)) goto out; @@ -1346,7 +1353,9 @@ out: /* Update fn->fn_sernum to invalidate all cached dst */ if (!err) { + spin_lock_bh(&ort->rt6i_table->tb6_lock); fib6_update_sernum(ort); + spin_unlock_bh(&ort->rt6i_table->tb6_lock); fib6_force_start_gc(net); } @@ -2154,6 +2163,8 @@ static struct rt6_info *__ip6_route_redirect(struct net *net, fn = fib6_lookup(&table->tb6_root, &fl6->daddr, &fl6->saddr); restart: for_each_fib6_node_rt_rcu(fn) { + if (rt->rt6i_nh_flags & RTNH_F_DEAD) + continue; if (rt6_check_expired(rt)) continue; if (rt->dst.error) @@ -2344,7 +2355,7 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev, rt->rt6i_idev = idev; dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 0); - /* Add this dst into uncached_list so that rt6_ifdown() can + /* Add this dst into uncached_list so that rt6_disable_ip() can * do proper release of the net_device */ rt6_uncached_list_add(rt); @@ -2746,6 +2757,9 @@ static struct rt6_info *ip6_route_info_create(struct fib6_config *cfg, rt->rt6i_flags = cfg->fc_flags; install_route: + if (!(rt->rt6i_flags & (RTF_LOCAL | RTF_ANYCAST)) && + !netif_carrier_ok(dev)) + rt->rt6i_nh_flags |= RTNH_F_LINKDOWN; rt->dst.dev = dev; rt->rt6i_idev = idev; rt->rt6i_table = table; @@ -3459,37 +3473,149 @@ void rt6_clean_tohost(struct net *net, struct in6_addr *gateway) fib6_clean_all(net, fib6_clean_tohost, gateway); } -struct arg_dev_net { - struct net_device *dev; - struct net *net; +struct arg_netdev_event { + const struct net_device *dev; + union { + unsigned int nh_flags; + unsigned long event; + }; }; +static int fib6_ifup(struct rt6_info *rt, void *p_arg) +{ + const struct arg_netdev_event *arg = p_arg; + const struct net *net = dev_net(arg->dev); + + if (rt != net->ipv6.ip6_null_entry && rt->dst.dev == arg->dev) { + rt->rt6i_nh_flags &= ~arg->nh_flags; + fib6_update_sernum_upto_root(dev_net(rt->dst.dev), rt); + } + + return 0; +} + +void rt6_sync_up(struct net_device *dev, unsigned int nh_flags) +{ + struct arg_netdev_event arg = { + .dev = dev, + .nh_flags = nh_flags, + }; + + if (nh_flags & RTNH_F_DEAD && netif_carrier_ok(dev)) + arg.nh_flags |= RTNH_F_LINKDOWN; + + fib6_clean_all(dev_net(dev), fib6_ifup, &arg); +} + +static bool rt6_multipath_uses_dev(const struct rt6_info *rt, + const struct net_device *dev) +{ + struct rt6_info *iter; + + if (rt->dst.dev == dev) + return true; + list_for_each_entry(iter, &rt->rt6i_siblings, rt6i_siblings) + if (iter->dst.dev == dev) + return true; + + return false; +} + +static void rt6_multipath_flush(struct rt6_info *rt) +{ + struct rt6_info *iter; + + rt->should_flush = 1; + list_for_each_entry(iter, &rt->rt6i_siblings, rt6i_siblings) + iter->should_flush = 1; +} + +static unsigned int rt6_multipath_dead_count(const struct rt6_info *rt, + const struct net_device *down_dev) +{ + struct rt6_info *iter; + unsigned int dead = 0; + + if (rt->dst.dev == down_dev || rt->rt6i_nh_flags & RTNH_F_DEAD) + dead++; + list_for_each_entry(iter, &rt->rt6i_siblings, rt6i_siblings) + if (iter->dst.dev == down_dev || + iter->rt6i_nh_flags & RTNH_F_DEAD) + dead++; + + return dead; +} + +static void rt6_multipath_nh_flags_set(struct rt6_info *rt, + const struct net_device *dev, + unsigned int nh_flags) +{ + struct rt6_info *iter; + + if (rt->dst.dev == dev) + rt->rt6i_nh_flags |= nh_flags; + list_for_each_entry(iter, &rt->rt6i_siblings, rt6i_siblings) + if (iter->dst.dev == dev) + iter->rt6i_nh_flags |= nh_flags; +} + /* called with write lock held for table with rt */ -static int fib6_ifdown(struct rt6_info *rt, void *arg) +static int fib6_ifdown(struct rt6_info *rt, void *p_arg) { - const struct arg_dev_net *adn = arg; - const struct net_device *dev = adn->dev; + const struct arg_netdev_event *arg = p_arg; + const struct net_device *dev = arg->dev; + const struct net *net = dev_net(dev); - if ((rt->dst.dev == dev || !dev) && - rt != adn->net->ipv6.ip6_null_entry && - (rt->rt6i_nsiblings == 0 || - (dev && netdev_unregistering(dev)) || - !rt->rt6i_idev->cnf.ignore_routes_with_linkdown)) - return -1; + if (rt == net->ipv6.ip6_null_entry) + return 0; + + switch (arg->event) { + case NETDEV_UNREGISTER: + return rt->dst.dev == dev ? -1 : 0; + case NETDEV_DOWN: + if (rt->should_flush) + return -1; + if (!rt->rt6i_nsiblings) + return rt->dst.dev == dev ? -1 : 0; + if (rt6_multipath_uses_dev(rt, dev)) { + unsigned int count; + + count = rt6_multipath_dead_count(rt, dev); + if (rt->rt6i_nsiblings + 1 == count) { + rt6_multipath_flush(rt); + return -1; + } + rt6_multipath_nh_flags_set(rt, dev, RTNH_F_DEAD | + RTNH_F_LINKDOWN); + fib6_update_sernum(rt); + } + return -2; + case NETDEV_CHANGE: + if (rt->dst.dev != dev || + rt->rt6i_flags & (RTF_LOCAL | RTF_ANYCAST)) + break; + rt->rt6i_nh_flags |= RTNH_F_LINKDOWN; + break; + } return 0; } -void rt6_ifdown(struct net *net, struct net_device *dev) +void rt6_sync_down_dev(struct net_device *dev, unsigned long event) { - struct arg_dev_net adn = { + struct arg_netdev_event arg = { .dev = dev, - .net = net, + .event = event, }; - fib6_clean_all(net, fib6_ifdown, &adn); - if (dev) - rt6_uncached_list_flush_dev(net, dev); + fib6_clean_all(dev_net(dev), fib6_ifdown, &arg); +} + +void rt6_disable_ip(struct net_device *dev, unsigned long event) +{ + rt6_sync_down_dev(dev, event); + rt6_uncached_list_flush_dev(dev_net(dev), dev); + neigh_ifdown(&nd_tbl, dev); } struct rt6_mtu_change_arg { @@ -3992,7 +4118,10 @@ static size_t rt6_nlmsg_size(struct rt6_info *rt) static int rt6_nexthop_info(struct sk_buff *skb, struct rt6_info *rt, unsigned int *flags, bool skip_oif) { - if (!netif_running(rt->dst.dev) || !netif_carrier_ok(rt->dst.dev)) { + if (rt->rt6i_nh_flags & RTNH_F_DEAD) + *flags |= RTNH_F_DEAD; + + if (rt->rt6i_nh_flags & RTNH_F_LINKDOWN) { *flags |= RTNH_F_LINKDOWN; if (rt->rt6i_idev->cnf.ignore_routes_with_linkdown) *flags |= RTNH_F_DEAD; diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index 500c74db746c..d7c30d366935 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -5,6 +5,7 @@ CFLAGS = -Wall -Wl,--no-as-needed -O2 -g CFLAGS += -I../../../../usr/include/ TEST_PROGS := run_netsocktests run_afpackettests test_bpf.sh netdevice.sh rtnetlink.sh +TEST_PROGS += fib_tests.sh TEST_GEN_FILES = socket TEST_GEN_FILES += psock_fanout psock_tpacket msg_zerocopy TEST_GEN_PROGS = reuseport_bpf reuseport_bpf_cpu reuseport_bpf_numa diff --git a/tools/testing/selftests/net/fib_tests.sh b/tools/testing/selftests/net/fib_tests.sh new file mode 100755 index 000000000000..a9154eefb2e2 --- /dev/null +++ b/tools/testing/selftests/net/fib_tests.sh @@ -0,0 +1,429 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# This test is for checking IPv4 and IPv6 FIB behavior in response to +# different events. + +ret=0 + +check_err() +{ + if [ $ret -eq 0 ]; then + ret=$1 + fi +} + +check_fail() +{ + if [ $1 -eq 0 ]; then + ret=1 + fi +} + +netns_create() +{ + local testns=$1 + + ip netns add $testns + ip netns exec $testns ip link set dev lo up +} + +fib_unreg_unicast_test() +{ + ret=0 + + netns_create "testns" + + ip netns exec testns ip link add dummy0 type dummy + ip netns exec testns ip link set dev dummy0 up + + ip netns exec testns ip address add 198.51.100.1/24 dev dummy0 + ip netns exec testns ip -6 address add 2001:db8:1::1/64 dev dummy0 + + ip netns exec testns ip route get fibmatch 198.51.100.2 &> /dev/null + check_err $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:1::2 &> /dev/null + check_err $? + + ip netns exec testns ip link del dev dummy0 + check_err $? + + ip netns exec testns ip route get fibmatch 198.51.100.2 &> /dev/null + check_fail $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:1::2 &> /dev/null + check_fail $? + + ip netns del testns + + if [ $ret -ne 0 ]; then + echo "FAIL: unicast route test" + return 1 + fi + echo "PASS: unicast route test" +} + +fib_unreg_multipath_test() +{ + ret=0 + + netns_create "testns" + + ip netns exec testns ip link add dummy0 type dummy + ip netns exec testns ip link set dev dummy0 up + + ip netns exec testns ip link add dummy1 type dummy + ip netns exec testns ip link set dev dummy1 up + + ip netns exec testns ip address add 198.51.100.1/24 dev dummy0 + ip netns exec testns ip -6 address add 2001:db8:1::1/64 dev dummy0 + + ip netns exec testns ip address add 192.0.2.1/24 dev dummy1 + ip netns exec testns ip -6 address add 2001:db8:2::1/64 dev dummy1 + + ip netns exec testns ip route add 203.0.113.0/24 \ + nexthop via 198.51.100.2 dev dummy0 \ + nexthop via 192.0.2.2 dev dummy1 + ip netns exec testns ip -6 route add 2001:db8:3::/64 \ + nexthop via 2001:db8:1::2 dev dummy0 \ + nexthop via 2001:db8:2::2 dev dummy1 + + ip netns exec testns ip route get fibmatch 203.0.113.1 &> /dev/null + check_err $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:3::1 &> /dev/null + check_err $? + + ip netns exec testns ip link del dev dummy0 + check_err $? + + ip netns exec testns ip route get fibmatch 203.0.113.1 &> /dev/null + check_fail $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:3::1 &> /dev/null + # In IPv6 we do not flush the entire multipath route. + check_err $? + + ip netns exec testns ip link del dev dummy1 + + ip netns del testns + + if [ $ret -ne 0 ]; then + echo "FAIL: multipath route test" + return 1 + fi + echo "PASS: multipath route test" +} + +fib_unreg_test() +{ + echo "Running netdev unregister tests" + + fib_unreg_unicast_test + fib_unreg_multipath_test +} + +fib_down_unicast_test() +{ + ret=0 + + netns_create "testns" + + ip netns exec testns ip link add dummy0 type dummy + ip netns exec testns ip link set dev dummy0 up + + ip netns exec testns ip address add 198.51.100.1/24 dev dummy0 + ip netns exec testns ip -6 address add 2001:db8:1::1/64 dev dummy0 + + ip netns exec testns ip route get fibmatch 198.51.100.2 &> /dev/null + check_err $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:1::2 &> /dev/null + check_err $? + + ip netns exec testns ip link set dev dummy0 down + check_err $? + + ip netns exec testns ip route get fibmatch 198.51.100.2 &> /dev/null + check_fail $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:1::2 &> /dev/null + check_fail $? + + ip netns exec testns ip link del dev dummy0 + + ip netns del testns + + if [ $ret -ne 0 ]; then + echo "FAIL: unicast route test" + return 1 + fi + echo "PASS: unicast route test" +} + +fib_down_multipath_test_do() +{ + local down_dev=$1 + local up_dev=$2 + + ip netns exec testns ip route get fibmatch 203.0.113.1 \ + oif $down_dev &> /dev/null + check_fail $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:3::1 \ + oif $down_dev &> /dev/null + check_fail $? + + ip netns exec testns ip route get fibmatch 203.0.113.1 \ + oif $up_dev &> /dev/null + check_err $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:3::1 \ + oif $up_dev &> /dev/null + check_err $? + + ip netns exec testns ip route get fibmatch 203.0.113.1 | \ + grep $down_dev | grep -q "dead linkdown" + check_err $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:3::1 | \ + grep $down_dev | grep -q "dead linkdown" + check_err $? + + ip netns exec testns ip route get fibmatch 203.0.113.1 | \ + grep $up_dev | grep -q "dead linkdown" + check_fail $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:3::1 | \ + grep $up_dev | grep -q "dead linkdown" + check_fail $? +} + +fib_down_multipath_test() +{ + ret=0 + + netns_create "testns" + + ip netns exec testns ip link add dummy0 type dummy + ip netns exec testns ip link set dev dummy0 up + + ip netns exec testns ip link add dummy1 type dummy + ip netns exec testns ip link set dev dummy1 up + + ip netns exec testns ip address add 198.51.100.1/24 dev dummy0 + ip netns exec testns ip -6 address add 2001:db8:1::1/64 dev dummy0 + + ip netns exec testns ip address add 192.0.2.1/24 dev dummy1 + ip netns exec testns ip -6 address add 2001:db8:2::1/64 dev dummy1 + + ip netns exec testns ip route add 203.0.113.0/24 \ + nexthop via 198.51.100.2 dev dummy0 \ + nexthop via 192.0.2.2 dev dummy1 + ip netns exec testns ip -6 route add 2001:db8:3::/64 \ + nexthop via 2001:db8:1::2 dev dummy0 \ + nexthop via 2001:db8:2::2 dev dummy1 + + ip netns exec testns ip route get fibmatch 203.0.113.1 &> /dev/null + check_err $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:3::1 &> /dev/null + check_err $? + + ip netns exec testns ip link set dev dummy0 down + check_err $? + + fib_down_multipath_test_do "dummy0" "dummy1" + + ip netns exec testns ip link set dev dummy0 up + check_err $? + ip netns exec testns ip link set dev dummy1 down + check_err $? + + fib_down_multipath_test_do "dummy1" "dummy0" + + ip netns exec testns ip link set dev dummy0 down + check_err $? + + ip netns exec testns ip route get fibmatch 203.0.113.1 &> /dev/null + check_fail $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:3::1 &> /dev/null + check_fail $? + + ip netns exec testns ip link del dev dummy1 + ip netns exec testns ip link del dev dummy0 + + ip netns del testns + + if [ $ret -ne 0 ]; then + echo "FAIL: multipath route test" + return 1 + fi + echo "PASS: multipath route test" +} + +fib_down_test() +{ + echo "Running netdev down tests" + + fib_down_unicast_test + fib_down_multipath_test +} + +fib_carrier_local_test() +{ + ret=0 + + # Local routes should not be affected when carrier changes. + netns_create "testns" + + ip netns exec testns ip link add dummy0 type dummy + ip netns exec testns ip link set dev dummy0 up + + ip netns exec testns ip link set dev dummy0 carrier on + + ip netns exec testns ip address add 198.51.100.1/24 dev dummy0 + ip netns exec testns ip -6 address add 2001:db8:1::1/64 dev dummy0 + + ip netns exec testns ip route get fibmatch 198.51.100.1 &> /dev/null + check_err $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:1::1 &> /dev/null + check_err $? + + ip netns exec testns ip route get fibmatch 198.51.100.1 | \ + grep -q "linkdown" + check_fail $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:1::1 | \ + grep -q "linkdown" + check_fail $? + + ip netns exec testns ip link set dev dummy0 carrier off + + ip netns exec testns ip route get fibmatch 198.51.100.1 &> /dev/null + check_err $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:1::1 &> /dev/null + check_err $? + + ip netns exec testns ip route get fibmatch 198.51.100.1 | \ + grep -q "linkdown" + check_fail $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:1::1 | \ + grep -q "linkdown" + check_fail $? + + ip netns exec testns ip address add 192.0.2.1/24 dev dummy0 + ip netns exec testns ip -6 address add 2001:db8:2::1/64 dev dummy0 + + ip netns exec testns ip route get fibmatch 192.0.2.1 &> /dev/null + check_err $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:2::1 &> /dev/null + check_err $? + + ip netns exec testns ip route get fibmatch 192.0.2.1 | \ + grep -q "linkdown" + check_fail $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:2::1 | \ + grep -q "linkdown" + check_fail $? + + ip netns exec testns ip link del dev dummy0 + + ip netns del testns + + if [ $ret -ne 0 ]; then + echo "FAIL: local route carrier test" + return 1 + fi + echo "PASS: local route carrier test" +} + +fib_carrier_unicast_test() +{ + ret=0 + + netns_create "testns" + + ip netns exec testns ip link add dummy0 type dummy + ip netns exec testns ip link set dev dummy0 up + + ip netns exec testns ip link set dev dummy0 carrier on + + ip netns exec testns ip address add 198.51.100.1/24 dev dummy0 + ip netns exec testns ip -6 address add 2001:db8:1::1/64 dev dummy0 + + ip netns exec testns ip route get fibmatch 198.51.100.2 &> /dev/null + check_err $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:1::2 &> /dev/null + check_err $? + + ip netns exec testns ip route get fibmatch 198.51.100.2 | \ + grep -q "linkdown" + check_fail $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:1::2 | \ + grep -q "linkdown" + check_fail $? + + ip netns exec testns ip link set dev dummy0 carrier off + + ip netns exec testns ip route get fibmatch 198.51.100.2 &> /dev/null + check_err $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:1::2 &> /dev/null + check_err $? + + ip netns exec testns ip route get fibmatch 198.51.100.2 | \ + grep -q "linkdown" + check_err $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:1::2 | \ + grep -q "linkdown" + check_err $? + + ip netns exec testns ip address add 192.0.2.1/24 dev dummy0 + ip netns exec testns ip -6 address add 2001:db8:2::1/64 dev dummy0 + + ip netns exec testns ip route get fibmatch 192.0.2.2 &> /dev/null + check_err $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:2::2 &> /dev/null + check_err $? + + ip netns exec testns ip route get fibmatch 192.0.2.2 | \ + grep -q "linkdown" + check_err $? + ip netns exec testns ip -6 route get fibmatch 2001:db8:2::2 | \ + grep -q "linkdown" + check_err $? + + ip netns exec testns ip link del dev dummy0 + + ip netns del testns + + if [ $ret -ne 0 ]; then + echo "FAIL: unicast route carrier test" + return 1 + fi + echo "PASS: unicast route carrier test" +} + +fib_carrier_test() +{ + echo "Running netdev carrier change tests" + + fib_carrier_local_test + fib_carrier_unicast_test +} + +fib_test() +{ + fib_unreg_test + fib_down_test + fib_carrier_test +} + +if [ "$(id -u)" -ne 0 ];then + echo "SKIP: Need root privileges" + exit 0 +fi + +if [ ! -x "$(command -v ip)" ]; then + echo "SKIP: Could not run test without ip tool" + exit 0 +fi + +ip route help 2>&1 | grep -q fibmatch +if [ $? -ne 0 ]; then + echo "SKIP: iproute2 too old, missing fibmatch" + exit 0 +fi + +fib_test + +exit $ret |