# HG changeset patch
# User ssmith@weybridge.uk.xensource.com
# Date 1157384304 -3600
# Node ID b219ea61a357385af107bc7261237f4bcfd35ae5
# Parent  5fa9b746d24fa2b427d9676cc5e27642bfd79137
Add support for netif frontends which don't support checksum offload.

Signed-off-by: Steven Smith <sos22@cam.ac.uk>

diff -r 5fa9b746d24f -r b219ea61a357 linux-2.6-xen-sparse/drivers/xen/netback/xenbus.c
--- a/linux-2.6-xen-sparse/drivers/xen/netback/xenbus.c	Sat Sep 02 12:11:54 2006 +0100
+++ b/linux-2.6-xen-sparse/drivers/xen/netback/xenbus.c	Mon Sep 04 16:38:24 2006 +0100
@@ -427,6 +427,14 @@ static int connect_rings(struct backend_
 		be->netif->dev->features |= NETIF_F_TSO;
 	}
 
+	if (xenbus_scanf(XBT_NIL, dev->otherend, "feature-no-csum-offload",
+			 "%d", &val) < 0)
+		val = 0;
+	if (val) {
+		be->netif->features &= ~NETIF_F_IP_CSUM;
+		be->netif->dev->features &= ~NETIF_F_IP_CSUM;
+	}
+
 	/* Map the shared frame, irq etc. */
 	err = netif_map(be->netif, tx_ring_ref, rx_ring_ref, evtchn);
 	if (err) {