From 42c75627b5d06a17b2ca93dba620af53bdb4f79c Mon Sep 17 00:00:00 2001
From: rwatson <rwatson@FreeBSD.org>
Date: Thu, 30 Dec 2004 17:54:53 +0000
Subject: [PATCH] Use a global variable, ipxpcb_lport_cache, to cache the most
 recently used IPX port number, rather than using the global ipxpcb list head.

---
 sys/netipx/ipx_input.c |  1 +
 sys/netipx/ipx_pcb.c   | 10 +++++-----
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/sys/netipx/ipx_input.c b/sys/netipx/ipx_input.c
index e7036e296978..1d1697d448ae 100644
--- a/sys/netipx/ipx_input.c
+++ b/sys/netipx/ipx_input.c
@@ -88,6 +88,7 @@ struct	sockaddr_ipx ipx_netmask, ipx_hostmask;
 /*
  * IPX protocol control block (pcb) lists.
  */
+u_short			ipxpcb_lport_cache;
 struct ipxpcbhead	ipxpcb_list;
 struct ipxpcbhead	ipxrawpcb_list;
 
diff --git a/sys/netipx/ipx_pcb.c b/sys/netipx/ipx_pcb.c
index 6cb8e50598d7..aa7527a93209 100644
--- a/sys/netipx/ipx_pcb.c
+++ b/sys/netipx/ipx_pcb.c
@@ -110,11 +110,11 @@ ipx_pcbbind(ipxp, nam, td)
 noname:
 	if (lport == 0)
 		do {
-			ipxpcb.ipxp_lport++;
-			if ((ipxpcb.ipxp_lport < IPXPORT_RESERVED) ||
-			    (ipxpcb.ipxp_lport >= IPXPORT_WELLKNOWN))
-				ipxpcb.ipxp_lport = IPXPORT_RESERVED;
-			lport = htons(ipxpcb.ipxp_lport);
+			ipxpcb_lport_cache++;
+			if ((ipxpcb_lport_cache < IPXPORT_RESERVED) ||
+			    (ipxpcb_lport_cache >= IPXPORT_WELLKNOWN))
+				ipxpcb_lport_cache = IPXPORT_RESERVED;
+			lport = htons(ipxpcb_lport_cache);
 		} while (ipx_pcblookup(&zeroipx_addr, lport, 0));
 	ipxp->ipxp_lport = lport;
 	return (0);