[IPV6]: Added GSO support for TCPv6

[linux-2.6] / net / ipv4 / tcp_input.c

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index c6d62f0a9966a4ca5977161916bc310fd7b7e2c7..7fa0b4a8a389c6e08c7eaf51ba1ceb922e1eede9 100644 (file)
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -1073,7 +1073,7 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_
                                else
                                        pkt_len = (end_seq -
                                                   TCP_SKB_CB(skb)->seq);
-                               if (tcp_fragment(sk, skb, pkt_len, skb_shinfo(skb)->tso_size))
+                               if (tcp_fragment(sk, skb, pkt_len, skb_shinfo(skb)->gso_size))
                                        break;
                                pcount = tcp_skb_pcount(skb);
                        }
@@ -1689,17 +1689,26 @@ static inline void tcp_moderate_cwnd(struct tcp_sock *tp)
        tp->snd_cwnd_stamp = tcp_time_stamp;
 }
 
+/* Lower bound on congestion window is slow start threshold
+ * unless congestion avoidance choice decides to overide it.
+ */
+static inline u32 tcp_cwnd_min(const struct sock *sk)
+{
+       const struct tcp_congestion_ops *ca_ops = inet_csk(sk)->icsk_ca_ops;
+
+       return ca_ops->min_cwnd ? ca_ops->min_cwnd(sk) : tcp_sk(sk)->snd_ssthresh;
+}
+
 /* Decrease cwnd each second ack. */
 static void tcp_cwnd_down(struct sock *sk)
 {
-       const struct inet_connection_sock *icsk = inet_csk(sk);
        struct tcp_sock *tp = tcp_sk(sk);
        int decr = tp->snd_cwnd_cnt + 1;
 
        tp->snd_cwnd_cnt = decr&1;
        decr >>= 1;
 
-       if (decr && tp->snd_cwnd > icsk->icsk_ca_ops->min_cwnd(sk))
+       if (decr && tp->snd_cwnd > tcp_cwnd_min(sk))
                tp->snd_cwnd -= decr;
 
        tp->snd_cwnd = min(tp->snd_cwnd, tcp_packets_in_flight(tp)+1);
@@ -3931,8 +3940,6 @@ int tcp_rcv_established(struct sock *sk, struct sk_buff *skb,
                                    tp->rcv_nxt == tp->rcv_wup)
                                        tcp_store_ts_recent(tp);
 
-                               tcp_rcv_rtt_measure_ts(sk, skb);
-
                                /* We know that such packets are checksummed
                                 * on entry.
                                 */
@@ -4171,8 +4178,6 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
                 */
 
                TCP_ECN_rcv_synack(tp, th);
-               if (tp->ecn_flags&TCP_ECN_OK)
-                       sock_set_flag(sk, SOCK_NO_LARGESEND);
 
                tp->snd_wl1 = TCP_SKB_CB(skb)->seq;
                tcp_ack(sk, skb, FLAG_SLOWPATH);
@@ -4315,8 +4320,6 @@ discard:
                tp->max_window = tp->snd_wnd;
 
                TCP_ECN_rcv_syn(tp, th);
-               if (tp->ecn_flags&TCP_ECN_OK)
-                       sock_set_flag(sk, SOCK_NO_LARGESEND);
 
                tcp_mtup_init(sk);
                tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);