Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

[karo-tx-linux.git] / net / ipv4 / tcp_ipv4.c

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 9c7d7621466b1241f404a5ca11de809dcff2d02a..a3f72d7fc06c07c43e1c00b67970eaee074e4593 100644 (file)
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -598,7 +598,10 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
        if (th->rst)
                return;
 
-       if (skb_rtable(skb)->rt_type != RTN_LOCAL)
+       /* If sk not NULL, it means we did a successful lookup and incoming
+        * route had to be correct. prequeue might have dropped our dst.
+        */
+       if (!sk && skb_rtable(skb)->rt_type != RTN_LOCAL)
                return;
 
        /* Swap the send and the receive. */
@@ -620,6 +623,7 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
        arg.iov[0].iov_base = (unsigned char *)&rep;
        arg.iov[0].iov_len  = sizeof(rep.th);
 
+       net = sk ? sock_net(sk) : dev_net(skb_dst(skb)->dev);
 #ifdef CONFIG_TCP_MD5SIG
        hash_location = tcp_parse_md5sig_option(th);
        if (!sk && hash_location) {
@@ -630,7 +634,7 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
                 * Incoming packet is checked with md5 hash with finding key,
                 * no RST generated if md5 hash doesn't match.
                 */
-               sk1 = __inet_lookup_listener(dev_net(skb_dst(skb)->dev),
+               sk1 = __inet_lookup_listener(net,
                                             &tcp_hashinfo, ip_hdr(skb)->saddr,
                                             th->source, ip_hdr(skb)->daddr,
                                             ntohs(th->source), inet_iif(skb));
@@ -678,7 +682,6 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
        if (sk)
                arg.bound_dev_if = sk->sk_bound_dev_if;
 
-       net = dev_net(skb_dst(skb)->dev);
        arg.tos = ip_hdr(skb)->tos;
        ip_send_unicast_reply(net, skb, &TCP_SKB_CB(skb)->header.h4.opt,
                              ip_hdr(skb)->saddr, ip_hdr(skb)->daddr,
@@ -1429,6 +1432,7 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
                struct dst_entry *dst = sk->sk_rx_dst;
 
                sock_rps_save_rxhash(sk, skb);
+               sk_mark_napi_id(sk, skb);
                if (dst) {
                        if (inet_sk(sk)->rx_dst_ifindex != skb->skb_iif ||
                            dst->ops->check(dst, 0) == NULL) {
@@ -1450,6 +1454,7 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
 
                if (nsk != sk) {
                        sock_rps_save_rxhash(nsk, skb);
+                       sk_mark_napi_id(sk, skb);
                        if (tcp_child_process(sk, nsk, skb)) {
                                rsk = nsk;
                                goto reset;
@@ -1661,7 +1666,7 @@ process:
        if (sk_filter(sk, skb))
                goto discard_and_relse;
 
-       sk_mark_napi_id(sk, skb);
+       sk_incoming_cpu_update(sk);
        skb->dev = NULL;
 
        bh_lock_sock_nested(sk);