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tcp: move tcp_verify_retransmit_hint

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Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ilpo Järvinen 2008-09-20 21:18:55 -07:00 committed by David S. Miller
parent 64edc2736e
commit c8c213f20c
1 changed files with 13 additions and 13 deletions
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26
net/ipv4/tcp_input.c
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@ -979,6 +979,19 @@ static void tcp_update_reordering(struct sock *sk, const int metric,
} }
} }
/* RFC: This is from the original, I doubt that this is necessary at all:
* clear xmit_retrans hint if seq of this skb is beyond hint. How could we
* retransmitted past LOST markings in the first place? I'm not fully sure
* about undo and end of connection cases, which can cause R without L?
*/
static void tcp_verify_retransmit_hint(struct tcp_sock *tp, struct sk_buff *skb)
{
if ((tp->retransmit_skb_hint != NULL) &&
before(TCP_SKB_CB(skb)->seq,
TCP_SKB_CB(tp->retransmit_skb_hint)->seq))
tp->retransmit_skb_hint = NULL;
}
/* This procedure tags the retransmission queue when SACKs arrive. /* This procedure tags the retransmission queue when SACKs arrive.
* *
* We have three tag bits: SACKED(S), RETRANS(R) and LOST(L). * We have three tag bits: SACKED(S), RETRANS(R) and LOST(L).
@ -2156,19 +2169,6 @@ static int tcp_time_to_recover(struct sock *sk)
return 0; return 0;
} }
/* RFC: This is from the original, I doubt that this is necessary at all:
* clear xmit_retrans hint if seq of this skb is beyond hint. How could we
* retransmitted past LOST markings in the first place? I'm not fully sure
* about undo and end of connection cases, which can cause R without L?
*/
static void tcp_verify_retransmit_hint(struct tcp_sock *tp, struct sk_buff *skb)
{
if ((tp->retransmit_skb_hint != NULL) &&
before(TCP_SKB_CB(skb)->seq,
TCP_SKB_CB(tp->retransmit_skb_hint)->seq))
tp->retransmit_skb_hint = NULL;
}
/* Mark head of queue up as lost. With RFC3517 SACK, the packets is /* Mark head of queue up as lost. With RFC3517 SACK, the packets is
* is against sacked "cnt", otherwise it's against facked "cnt" * is against sacked "cnt", otherwise it's against facked "cnt"
*/ */