diff options
Diffstat (limited to 'net/ipv6/udp.c')
| -rw-r--r-- | net/ipv6/udp.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 52b8347ae3b2..90824852f598 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -34,6 +34,7 @@ #include <linux/init.h> #include <linux/module.h> #include <linux/skbuff.h> +#include <linux/slab.h> #include <asm/uaccess.h> #include <net/ndisc.h> @@ -258,8 +259,8 @@ static struct sock *__udp6_lib_lookup(struct net *net, if (hslot->count < hslot2->count) goto begin; - result = udp6_lib_lookup2(net, &in6addr_any, sport, - daddr, hnum, dif, + result = udp6_lib_lookup2(net, saddr, sport, + &in6addr_any, hnum, dif, hslot2, slot2); } rcu_read_unlock(); @@ -583,16 +584,20 @@ static void flush_stack(struct sock **stack, unsigned int count, bh_lock_sock(sk); if (!sock_owned_by_user(sk)) udpv6_queue_rcv_skb(sk, skb1); - else - sk_add_backlog(sk, skb1); + else if (sk_add_backlog(sk, skb1)) { + kfree_skb(skb1); + bh_unlock_sock(sk); + goto drop; + } bh_unlock_sock(sk); - } else { - atomic_inc(&sk->sk_drops); - UDP6_INC_STATS_BH(sock_net(sk), - UDP_MIB_RCVBUFERRORS, IS_UDPLITE(sk)); - UDP6_INC_STATS_BH(sock_net(sk), - UDP_MIB_INERRORS, IS_UDPLITE(sk)); + continue; } +drop: + atomic_inc(&sk->sk_drops); + UDP6_INC_STATS_BH(sock_net(sk), + UDP_MIB_RCVBUFERRORS, IS_UDPLITE(sk)); + UDP6_INC_STATS_BH(sock_net(sk), + UDP_MIB_INERRORS, IS_UDPLITE(sk)); } } /* @@ -754,8 +759,12 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, bh_lock_sock(sk); if (!sock_owned_by_user(sk)) udpv6_queue_rcv_skb(sk, skb); - else - sk_add_backlog(sk, skb); + else if (sk_add_backlog(sk, skb)) { + atomic_inc(&sk->sk_drops); + bh_unlock_sock(sk); + sock_put(sk); + goto discard; + } bh_unlock_sock(sk); sock_put(sk); return 0; |