diff options
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/ip6_fib.c | 18 | ||||
| -rw-r--r-- | net/ipv6/route.c | 2 | ||||
| -rw-r--r-- | net/ipv6/sit.c | 13 |
3 files changed, 27 insertions, 6 deletions
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c index 49884f96232b..87f47bc55c5e 100644 --- a/net/ipv6/ip6_fib.c +++ b/net/ipv6/ip6_fib.c @@ -1151,8 +1151,24 @@ add: err = call_fib6_entry_notifiers(info->nl_net, FIB_EVENT_ENTRY_ADD, rt, extack); - if (err) + if (err) { + struct fib6_info *sibling, *next_sibling; + + /* If the route has siblings, then it first + * needs to be unlinked from them. + */ + if (!rt->fib6_nsiblings) + return err; + + list_for_each_entry_safe(sibling, next_sibling, + &rt->fib6_siblings, + fib6_siblings) + sibling->fib6_nsiblings--; + rt->fib6_nsiblings = 0; + list_del_init(&rt->fib6_siblings); + rt6_multipath_rebalance(next_sibling); return err; + } } rcu_assign_pointer(rt->fib6_next, iter); diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 8b0c33fb19a2..e49fec767a10 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -2563,7 +2563,7 @@ static struct dst_entry *rt6_check(struct rt6_info *rt, { u32 rt_cookie = 0; - if ((from && !fib6_get_cookie_safe(from, &rt_cookie)) || + if (!from || !fib6_get_cookie_safe(from, &rt_cookie) || rt_cookie != cookie) return NULL; diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 80610899a323..b2ccbc473127 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -900,12 +900,17 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb, RT_TOS(tos), RT_SCOPE_UNIVERSE, IPPROTO_IPV6, 0, dst, tiph->saddr, 0, 0, sock_net_uid(tunnel->net, NULL)); - rt = ip_route_output_flow(tunnel->net, &fl4, NULL); - if (IS_ERR(rt)) { - dev->stats.tx_carrier_errors++; - goto tx_error_icmp; + rt = dst_cache_get_ip4(&tunnel->dst_cache, &fl4.saddr); + if (!rt) { + rt = ip_route_output_flow(tunnel->net, &fl4, NULL); + if (IS_ERR(rt)) { + dev->stats.tx_carrier_errors++; + goto tx_error_icmp; + } + dst_cache_set_ip4(&tunnel->dst_cache, &rt->dst, fl4.saddr); } + if (rt->rt_type != RTN_UNICAST) { ip_rt_put(rt); dev->stats.tx_carrier_errors++; |