From 8273b54108445f7bb8dff4cbfada0922f13c2d73 Mon Sep 17 00:00:00 2001
From: kieranm <kieranm>
Date: Wed, 14 Jul 2004 09:48:27 +0000
Subject: [PATCH] Kieran Mansley - 14th July 2004

 * Only move a single segment from the unacked queue to the unsent queue when performing a retransmit
---
 src/core/tcp_out.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/core/tcp_out.c b/src/core/tcp_out.c
index b8ee4426..53d1f167 100644
--- a/src/core/tcp_out.c
+++ b/src/core/tcp_out.c
@@ -577,14 +577,10 @@ tcp_rexmit(struct tcp_pcb *pcb)
     return;
   }
 
-  /* Move all unacked segments to the unsent queue. */
-  for (seg = pcb->unacked; seg->next != NULL; seg = seg->next);
-
-  seg->next = pcb->unsent;
-  pcb->unsent = pcb->unacked;
-
-  pcb->unacked = NULL;
-
+  /* Move the first unacked segment to the unsent queue */
+  seg = pcb->unacked->next;
+  pcb->unacked->next = pcb->unsent;
+  pcb->unacked = seg;
 
   pcb->snd_nxt = ntohl(pcb->unsent->tcphdr->seqno);