1 files changed, 16 insertions, 5 deletions

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index cc3a0a06c004..bda08a09357d 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -222,7 +222,7 @@ fail:
 	return error;
 }
 
-static int ipv4_rcv_saddr_equal(const struct sock *sk1, const struct sock *sk2)
+int ipv4_rcv_saddr_equal(const struct sock *sk1, const struct sock *sk2)
 {
 	struct inet_sock *inet1 = inet_sk(sk1), *inet2 = inet_sk(sk2);
 
@@ -596,6 +596,7 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 		return -EOPNOTSUPP;
 
 	ipc.opt = NULL;
+	ipc.shtx.flags = 0;
 
 	if (up->pending) {
 		/*
@@ -643,6 +644,9 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 	ipc.addr = inet->saddr;
 
 	ipc.oif = sk->sk_bound_dev_if;
+	err = sock_tx_timestamp(msg, sk, &ipc.shtx);
+	if (err)
+		return err;
 	if (msg->msg_controllen) {
 		err = ip_cmsg_send(sock_net(sk), msg, &ipc);
 		if (err)
@@ -1180,7 +1184,7 @@ static int __udp4_lib_mcast_deliver(struct net *net, struct sk_buff *skb,
 			sk = sknext;
 		} while (sknext);
 	} else
-		kfree_skb(skb);
+		consume_skb(skb);
 	spin_unlock(&hslot->lock);
 	return 0;
 }
@@ -1234,8 +1238,7 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
 	struct udphdr *uh;
 	unsigned short ulen;
 	struct rtable *rt = (struct rtable*)skb->dst;
-	__be32 saddr = ip_hdr(skb)->saddr;
-	__be32 daddr = ip_hdr(skb)->daddr;
+	__be32 saddr, daddr;
 	struct net *net = dev_net(skb->dev);
 
 	/*
@@ -1259,6 +1262,9 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
 	if (udp4_csum_init(skb, uh, proto))
 		goto csum_error;
 
+	saddr = ip_hdr(skb)->saddr;
+	daddr = ip_hdr(skb)->daddr;
+
 	if (rt->rt_flags & (RTCF_BROADCAST|RTCF_MULTICAST))
 		return __udp4_lib_mcast_deliver(net, skb, uh,
 				saddr, daddr, udptable);
@@ -1612,7 +1618,8 @@ static struct sock *udp_get_next(struct seq_file *seq, struct sock *sk)
 	} while (sk && (!net_eq(sock_net(sk), net) || sk->sk_family != state->family));
 
 	if (!sk) {
-		spin_unlock_bh(&state->udp_table->hash[state->bucket].lock);
+		if (state->bucket < UDP_HTABLE_SIZE)
+			spin_unlock_bh(&state->udp_table->hash[state->bucket].lock);
 		return udp_get_first(seq, state->bucket + 1);
 	}
 	return sk;
@@ -1630,6 +1637,9 @@ static struct sock *udp_get_idx(struct seq_file *seq, loff_t pos)
 
 static void *udp_seq_start(struct seq_file *seq, loff_t *pos)
 {
+	struct udp_iter_state *state = seq->private;
+	state->bucket = UDP_HTABLE_SIZE;
+
 	return *pos ? udp_get_idx(seq, *pos-1) : SEQ_START_TOKEN;
 }
 
@@ -1813,6 +1823,7 @@ EXPORT_SYMBOL(udp_lib_getsockopt);
 EXPORT_SYMBOL(udp_lib_setsockopt);
 EXPORT_SYMBOL(udp_poll);
 EXPORT_SYMBOL(udp_lib_get_port);
+EXPORT_SYMBOL(ipv4_rcv_saddr_equal);
 
 #ifdef CONFIG_PROC_FS
 EXPORT_SYMBOL(udp_proc_register);