tcp: move tcp_simple_retransmit to tcp_input
Ilpo Järvinen [Tue, 25 Nov 2008 05:11:55 +0000 (21:11 -0800)]
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/tcp.h
net/ipv4/tcp_input.c
net/ipv4/tcp_output.c

index 8f26b28..90b4c3b 100644 (file)
@@ -472,8 +472,6 @@ extern void tcp_send_delayed_ack(struct sock *sk);
 
 /* tcp_input.c */
 extern void tcp_cwnd_application_limited(struct sock *sk);
-extern void tcp_skb_mark_lost_uncond_verify(struct tcp_sock *tp,
-                                           struct sk_buff *skb);
 
 /* tcp_timer.c */
 extern void tcp_init_xmit_timers(struct sock *);
index 097294b..8085704 100644 (file)
@@ -1002,7 +1002,8 @@ static void tcp_skb_mark_lost(struct tcp_sock *tp, struct sk_buff *skb)
        }
 }
 
-void tcp_skb_mark_lost_uncond_verify(struct tcp_sock *tp, struct sk_buff *skb)
+static void tcp_skb_mark_lost_uncond_verify(struct tcp_sock *tp,
+                                           struct sk_buff *skb)
 {
        tcp_verify_retransmit_hint(tp, skb);
 
@@ -2559,6 +2560,56 @@ static void tcp_mtup_probe_success(struct sock *sk, struct sk_buff *skb)
        tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);
 }
 
+/* Do a simple retransmit without using the backoff mechanisms in
+ * tcp_timer. This is used for path mtu discovery.
+ * The socket is already locked here.
+ */
+void tcp_simple_retransmit(struct sock *sk)
+{
+       const struct inet_connection_sock *icsk = inet_csk(sk);
+       struct tcp_sock *tp = tcp_sk(sk);
+       struct sk_buff *skb;
+       unsigned int mss = tcp_current_mss(sk, 0);
+       u32 prior_lost = tp->lost_out;
+
+       tcp_for_write_queue(skb, sk) {
+               if (skb == tcp_send_head(sk))
+                       break;
+               if (skb->len > mss &&
+                   !(TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_ACKED)) {
+                       if (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_RETRANS) {
+                               TCP_SKB_CB(skb)->sacked &= ~TCPCB_SACKED_RETRANS;
+                               tp->retrans_out -= tcp_skb_pcount(skb);
+                       }
+                       tcp_skb_mark_lost_uncond_verify(tp, skb);
+               }
+       }
+
+       tcp_clear_retrans_hints_partial(tp);
+
+       if (prior_lost == tp->lost_out)
+               return;
+
+       if (tcp_is_reno(tp))
+               tcp_limit_reno_sacked(tp);
+
+       tcp_verify_left_out(tp);
+
+       /* Don't muck with the congestion window here.
+        * Reason is that we do not increase amount of _data_
+        * in network, but units changed and effective
+        * cwnd/ssthresh really reduced now.
+        */
+       if (icsk->icsk_ca_state != TCP_CA_Loss) {
+               tp->high_seq = tp->snd_nxt;
+               tp->snd_ssthresh = tcp_current_ssthresh(sk);
+               tp->prior_ssthresh = 0;
+               tp->undo_marker = 0;
+               tcp_set_ca_state(sk, TCP_CA_Loss);
+       }
+       tcp_xmit_retransmit_queue(sk);
+}
+
 /* Process an event, which can update packets-in-flight not trivially.
  * Main goal of this function is to calculate new estimate for left_out,
  * taking into account both packets sitting in receiver's buffer and
index 86ef989..c069ecb 100644 (file)
@@ -1879,56 +1879,6 @@ static void tcp_retrans_try_collapse(struct sock *sk, struct sk_buff *to,
        }
 }
 
-/* Do a simple retransmit without using the backoff mechanisms in
- * tcp_timer. This is used for path mtu discovery.
- * The socket is already locked here.
- */
-void tcp_simple_retransmit(struct sock *sk)
-{
-       const struct inet_connection_sock *icsk = inet_csk(sk);
-       struct tcp_sock *tp = tcp_sk(sk);
-       struct sk_buff *skb;
-       unsigned int mss = tcp_current_mss(sk, 0);
-       u32 prior_lost = tp->lost_out;
-
-       tcp_for_write_queue(skb, sk) {
-               if (skb == tcp_send_head(sk))
-                       break;
-               if (skb->len > mss &&
-                   !(TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_ACKED)) {
-                       if (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_RETRANS) {
-                               TCP_SKB_CB(skb)->sacked &= ~TCPCB_SACKED_RETRANS;
-                               tp->retrans_out -= tcp_skb_pcount(skb);
-                       }
-                       tcp_skb_mark_lost_uncond_verify(tp, skb);
-               }
-       }
-
-       tcp_clear_retrans_hints_partial(tp);
-
-       if (prior_lost == tp->lost_out)
-               return;
-
-       if (tcp_is_reno(tp))
-               tcp_limit_reno_sacked(tp);
-
-       tcp_verify_left_out(tp);
-
-       /* Don't muck with the congestion window here.
-        * Reason is that we do not increase amount of _data_
-        * in network, but units changed and effective
-        * cwnd/ssthresh really reduced now.
-        */
-       if (icsk->icsk_ca_state != TCP_CA_Loss) {
-               tp->high_seq = tp->snd_nxt;
-               tp->snd_ssthresh = tcp_current_ssthresh(sk);
-               tp->prior_ssthresh = 0;
-               tp->undo_marker = 0;
-               tcp_set_ca_state(sk, TCP_CA_Loss);
-       }
-       tcp_xmit_retransmit_queue(sk);
-}
-
 /* This retransmits one SKB.  Policy decisions and retransmit queue
  * state updates are done by the caller.  Returns non-zero if an
  * error occurred which prevented the send.