diff options
Diffstat (limited to 'net/ipv4/route.c')
| -rw-r--r-- | net/ipv4/route.c | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 02c62299d717..a1f2830d8110 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -915,11 +915,11 @@ static int ip_error(struct sk_buff *skb) if (!IN_DEV_FORWARD(in_dev)) { switch (rt->dst.error) { case EHOSTUNREACH: - IP_INC_STATS_BH(net, IPSTATS_MIB_INADDRERRORS); + __IP_INC_STATS(net, IPSTATS_MIB_INADDRERRORS); break; case ENETUNREACH: - IP_INC_STATS_BH(net, IPSTATS_MIB_INNOROUTES); + __IP_INC_STATS(net, IPSTATS_MIB_INNOROUTES); break; } goto out; @@ -934,7 +934,7 @@ static int ip_error(struct sk_buff *skb) break; case ENETUNREACH: code = ICMP_NET_UNREACH; - IP_INC_STATS_BH(net, IPSTATS_MIB_INNOROUTES); + __IP_INC_STATS(net, IPSTATS_MIB_INNOROUTES); break; case EACCES: code = ICMP_PKT_FILTERED; @@ -1438,9 +1438,9 @@ static void rt_set_nexthop(struct rtable *rt, __be32 daddr, #endif } -static struct rtable *rt_dst_alloc(struct net_device *dev, - unsigned int flags, u16 type, - bool nopolicy, bool noxfrm, bool will_cache) +struct rtable *rt_dst_alloc(struct net_device *dev, + unsigned int flags, u16 type, + bool nopolicy, bool noxfrm, bool will_cache) { struct rtable *rt; @@ -1468,6 +1468,7 @@ static struct rtable *rt_dst_alloc(struct net_device *dev, return rt; } +EXPORT_SYMBOL(rt_dst_alloc); /* called in rcu_read_lock() section */ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr, @@ -2045,6 +2046,18 @@ static struct rtable *__mkroute_output(const struct fib_result *res, */ if (fi && res->prefixlen < 4) fi = NULL; + } else if ((type == RTN_LOCAL) && (orig_oif != 0) && + (orig_oif != dev_out->ifindex)) { + /* For local routes that require a particular output interface + * we do not want to cache the result. Caching the result + * causes incorrect behaviour when there are multiple source + * addresses on the interface, the end result being that if the + * intended recipient is waiting on that interface for the + * packet he won't receive it because it will be delivered on + * the loopback interface and the IP_PKTINFO ipi_ifindex will + * be set to the loopback interface as well. + */ + fi = NULL; } fnhe = NULL; @@ -2133,6 +2146,7 @@ struct rtable *__ip_route_output_key_hash(struct net *net, struct flowi4 *fl4, unsigned int flags = 0; struct fib_result res; struct rtable *rth; + int master_idx; int orig_oif; int err = -ENETUNREACH; @@ -2142,6 +2156,9 @@ struct rtable *__ip_route_output_key_hash(struct net *net, struct flowi4 *fl4, orig_oif = fl4->flowi4_oif; + master_idx = l3mdev_master_ifindex_by_index(net, fl4->flowi4_oif); + if (master_idx) + fl4->flowi4_oif = master_idx; fl4->flowi4_iif = LOOPBACK_IFINDEX; fl4->flowi4_tos = tos & IPTOS_RT_MASK; fl4->flowi4_scope = ((tos & RTO_ONLINK) ? |