[cgutman] 42455: - Send a gratuitous ARP packet when our IP address changes

Author: cgutman
Date: Fri Aug  7 05:21:56 2009
New Revision: 42455

URL: http://svn.reactos.org/svn/reactos?rev=42455&view=rev
Log:
 - Send a gratuitous ARP packet when our IP address changes

Modified:
    trunk/reactos/lib/drivers/ip/network/arp.c
    trunk/reactos/lib/drivers/ip/network/ip.c

Modified: trunk/reactos/lib/drivers/ip/network/arp.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/drivers/ip/network/arp....
==============================================================================
--- trunk/reactos/lib/drivers/ip/network/arp.c [iso-8859-1] (original)
+++ trunk/reactos/lib/drivers/ip/network/arp.c [iso-8859-1] Fri Aug  7 05:21:56 2009
@@ -122,6 +122,11 @@
     USHORT ProtoType;

TI_DbgPrint(DEBUG_ARP, ("Called.\n"));
+
+    /* If Address is NULL then the caller wants an
+     * gratuitous ARP packet sent */
+    if (!Address)
+        Address = &Interface->Unicast;

switch (Address->Type) {
         case IP_ADDRESS_V4:

Modified: trunk/reactos/lib/drivers/ip/network/ip.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/drivers/ip/network/ip.c...
==============================================================================
--- trunk/reactos/lib/drivers/ip/network/ip.c [iso-8859-1] (original)
+++ trunk/reactos/lib/drivers/ip/network/ip.c [iso-8859-1] Fri Aug  7 05:21:56 2009
@@ -222,8 +222,12 @@

if (!RouterAddRoute(&NetworkAddress, &IF->Netmask, NCE, 1)) {
    TI_DbgPrint(MIN_TRACE, ("Could not add route due to insufficient resources.\n"));
-        return;
-    }
+    }
+
+    /* Send a gratuitous ARP packet to update the route caches of
+     * other computers */
+    if (IF != Loopback)
+       ARPTransmit(NULL, IF);
 }

BOOLEAN IPRegisterInterface(