ia64/xen-unstable

changeset 10643:addde2d2d97a

[NET] front: Zero negotiated bits in xen_set_features

When we reconnect to the backend we need to first zero all negotiated
bits as the functions xen_set_sg and xen_set_tso do not (and are not
supposed to) zero bits when they fail to set them.

This patch also permanently enables the NETIF_F_GSO_ROBUST bit as we
never parse any GSO fields ourselves (even if we did the backend could
not trust us so it's wasted effort).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
author kaf24@firebug.cl.cam.ac.uk
date Mon Jul 03 09:06:59 2006 +0100 (2006-07-03)
parents 4b9876fe2f1f
children be3e07723b73
files linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c
line diff
     1.1 --- a/linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c	Mon Jul 03 09:05:18 2006 +0100
     1.2 +++ b/linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c	Mon Jul 03 09:06:59 2006 +0100
     1.3 @@ -1112,6 +1112,11 @@ static int xennet_set_tso(struct net_dev
     1.4  
     1.5  static void xennet_set_features(struct net_device *dev)
     1.6  {
     1.7 +	/* Turn off all GSO bits except ROBUST. */
     1.8 +	dev->features &= (1 << NETIF_F_GSO_SHIFT) - 1;
     1.9 +	dev->features |= NETIF_F_GSO_ROBUST;
    1.10 +	xennet_set_sg(dev, 0);
    1.11 +
    1.12  	if (!xennet_set_sg(dev, 1))
    1.13  		xennet_set_tso(dev, 1);
    1.14  }