Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (56 commits)
  l2tp: Fix possible oops if transmitting or receiving when tunnel goes down
  tcp: Fix for race due to temporary drop of the socket lock in skb_splice_bits.
  tcp: Increment OUTRSTS in tcp_send_active_reset()
  raw: Raw socket leak.
  lt2p: Fix possible WARN_ON from socket code when UDP socket is closed
  USB ID for Philips CPWUA054/00 Wireless USB Adapter 11g
  ssb: Fix context assertion in ssb_pcicore_dev_irqvecs_enable
  libertas: fix command size for CMD_802_11_SUBSCRIBE_EVENT
  ipw2200: expire and use oldest BSS on adhoc create
  airo warning fix
  b43legacy: Fix controller restart crash
  sctp: Fix ECN markings for IPv6
  sctp: Flush the queue only once during fast retransmit.
  sctp: Start T3-RTX timer when fast retransmitting lowest TSN
  sctp: Correctly implement Fast Recovery cwnd manipulations.
  sctp: Move sctp_v4_dst_saddr out of loop
  sctp: retran_path update bug fix
  tcp: fix skb vs fack_count out-of-sync condition
  sunhme: Cleanup use of deprecated calls to save_and_cli and restore_flags.
  xfrm: xfrm_algo: correct usage of RIPEMD-160
  ...

1 files changed, 22 insertions, 13 deletions

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index b54d9d37b636..eba873e9b560 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -1392,9 +1392,9 @@ static struct sk_buff *tcp_maybe_skipping_dsack(struct sk_buff *skb,
 
         if (before(next_dup->start_seq, skip_to_seq)) {
                 skb = tcp_sacktag_skip(skb, sk, next_dup->start_seq, fack_count);
-                tcp_sacktag_walk(skb, sk, NULL,
-                                 next_dup->start_seq, next_dup->end_seq,
-                                 1, fack_count, reord, flag);
+                skb = tcp_sacktag_walk(skb, sk, NULL,
+                                     next_dup->start_seq, next_dup->end_seq,
+                                     1, fack_count, reord, flag);
         }
 
         return skb;
@@ -2483,6 +2483,20 @@ static inline void tcp_complete_cwr(struct sock *sk)
         tcp_ca_event(sk, CA_EVENT_COMPLETE_CWR);
 }
 
+static void tcp_try_keep_open(struct sock *sk)
+{
+        struct tcp_sock *tp = tcp_sk(sk);
+        int state = TCP_CA_Open;
+
+        if (tcp_left_out(tp) || tp->retrans_out || tp->undo_marker)
+                state = TCP_CA_Disorder;
+
+        if (inet_csk(sk)->icsk_ca_state != state) {
+                tcp_set_ca_state(sk, state);
+                tp->high_seq = tp->snd_nxt;
+        }
+}
+
 static void tcp_try_to_open(struct sock *sk, int flag)
 {
         struct tcp_sock *tp = tcp_sk(sk);
@@ -2496,15 +2510,7 @@ static void tcp_try_to_open(struct sock *sk, int flag)
                 tcp_enter_cwr(sk, 1);
 
         if (inet_csk(sk)->icsk_ca_state != TCP_CA_CWR) {
-                int state = TCP_CA_Open;
-
-                if (tcp_left_out(tp) || tp->retrans_out || tp->undo_marker)
-                        state = TCP_CA_Disorder;
-
-                if (inet_csk(sk)->icsk_ca_state != state) {
-                        tcp_set_ca_state(sk, state);
-                        tp->high_seq = tp->snd_nxt;
-                }
+                tcp_try_keep_open(sk);
                 tcp_moderate_cwnd(tp);
         } else {
                 tcp_cwnd_down(sk, flag);
@@ -3310,8 +3316,11 @@ no_queue:
         return 1;
 
 old_ack:
-        if (TCP_SKB_CB(skb)->sacked)
+        if (TCP_SKB_CB(skb)->sacked) {
                 tcp_sacktag_write_queue(sk, skb, prior_snd_una);
+                if (icsk->icsk_ca_state == TCP_CA_Open)
+                        tcp_try_keep_open(sk);
+        }
 
 uninteresting_ack:
         SOCK_DEBUG(sk, "Ack %u out of %u:%u\n", ack, tp->snd_una, tp->snd_nxt);