From cd316ff51c12b8c6dd5c09384bbe1d700735fe3c Mon Sep 17 00:00:00 2001
From: Jeffrey Altman <jaltman@secure-endpoints.com>
Date: Sat, 9 Aug 2008 05:52:36 +0000
Subject: [PATCH] windows-rx-udpbufsize-20080809

LICENSE MIT

Set UdpBufSize to 256K.  Add RxUdpBufSize registry value to permit
runtime configuration.
---
 src/WINNT/afsd/afsd_init.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/WINNT/afsd/afsd_init.c b/src/WINNT/afsd/afsd_init.c
index b2cc03247a..d22fb1e4c8 100644
--- a/src/WINNT/afsd/afsd_init.c
+++ b/src/WINNT/afsd/afsd_init.c
@@ -560,6 +560,7 @@ int afsd_InitCM(char **reasonP)
     DWORD dwValue;
     DWORD rx_enable_peer_stats;
     DWORD rx_enable_process_stats;
+    DWORD rx_udpbufsize = -1;
     long traceBufSize;
     long maxcpus;
     long ltt, ltto;
@@ -1062,6 +1063,15 @@ int afsd_InitCM(char **reasonP)
     if (rx_extraPackets)
         afsi_log("RX extraPackets is %d", rx_extraPackets);
 
+    dummyLen = sizeof(rx_udpbufsize);
+    code = RegQueryValueEx(parmKey, "RxUdpBufSize", NULL, NULL,
+                           (BYTE *) &rx_udpbufsize, &dummyLen);
+    if (code != ERROR_SUCCESS) {
+        rx_udpbufsize = 256*1024;
+    }
+    if (rx_udpbufsize)
+        afsi_log("RX udpbufsize is %d", rx_udpbufsize);
+
     dummyLen = sizeof(rx_mtu);
     code = RegQueryValueEx(parmKey, "RxMaxMTU", NULL, NULL,
                            (BYTE *) &rx_mtu, &dummyLen);
@@ -1286,6 +1296,11 @@ int afsd_InitCM(char **reasonP)
         afsi_log("rx_SetMaxMTU %d successful", rx_mtu);
     }
 
+    if ( rx_udpbufsize != -1 ) {
+        rx_SetUdpBufSize(rx_udpbufsize);
+        afsi_log("rx_SetUdpBufSize %d", rx_udpbufsize);
+    }
+
     /* initialize RX, and tell it to listen to the callbackport, 
      * which is used for callback RPC messages.
      */