[ros-diffs] [gvg] 20314: Force Nagle algorithm off for loopback

Force Nagle algorithm off for loopback
Modified: trunk/reactos/drivers/lib/oskittcp/oskittcp/tcp_output.c
  _____  

Modified: trunk/reactos/drivers/lib/oskittcp/oskittcp/tcp_output.c
--- trunk/reactos/drivers/lib/oskittcp/oskittcp/tcp_output.c
2005-12-23 18:03:12 UTC (rev 20313)
+++ trunk/reactos/drivers/lib/oskittcp/oskittcp/tcp_output.c
2005-12-23 20:44:39 UTC (rev 20314)
@@ -66,7 +66,10 @@

 extern struct mbuf *m_copypack();
 #endif
 
+#define IS_LOOPBACK_ADDR(addr) \
+  ((ntohl(addr) & IN_CLASSA_NET) == (IN_LOOPBACKNET <<
IN_CLASSA_NSHIFT))
 
+
 /*
  * Tcp output routine: figure out what should be sent and send it.
  */
@@ -215,8 +218,8 @@
 	win = sbspace(&so->so_rcv);
 
 	/*
-	 * Sender silly window avoidance.  If connection is idle
-	 * and can send all data, a maximum segment,
+	 * Sender silly window avoidance.  If connection is idle or
using
+	 * the loopback interface and can send all data, a maximum
segment,
 	 * at least a maximum default-size segment do it,
 	 * or are forced, do it; otherwise don't bother.
 	 * If peer's buffer is tiny, then send
@@ -227,7 +230,8 @@
 	if (len) {
 		if (len == tp->t_maxseg)
 			goto send;
-		if ((idle || tp->t_flags & TF_NODELAY) &&
+		if ((idle || tp->t_flags & TF_NODELAY ||
+                     IS_LOOPBACK_ADDR(tp->t_inpcb->inp_laddr.s_addr))
&&
 		    (tp->t_flags & TF_NOPUSH) == 0 &&
 		    len + off >= so->so_snd.sb_cc)
 			goto send;