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authorPierre Riteau <Pierre.Riteau@irisa.fr>2009-11-25 18:49:34 +0000
committerAnthony Liguori <aliguori@us.ibm.com>2009-12-03 09:41:35 -0600
commit6720b35b8186e9c6a9f137c02f8c2c1e7c98085f (patch)
tree78a91e27a7323fb3333833f348dd7d552fed775a
parent0f2fbf40a9d1f0ccdd86bd47f17fff24666f01d9 (diff)
net: fix TAP networking on host kernels without IFF_VNET_HDR support
vnet_hdr is initialized at 1 by default. We need to reset it to 0 if the kernel doesn't support IFF_VNET_HDR. Signed-off-by: Pierre Riteau <Pierre.Riteau@irisa.fr> Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
-rw-r--r--net/tap-linux.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/tap-linux.c b/net/tap-linux.c
index 0f621a2315..e4f7e2723b 100644
--- a/net/tap-linux.c
+++ b/net/tap-linux.c
@@ -52,6 +52,8 @@ int tap_open(char *ifname, int ifname_size, int *vnet_hdr, int vnet_hdr_required
features & IFF_VNET_HDR) {
*vnet_hdr = 1;
ifr.ifr_flags |= IFF_VNET_HDR;
+ } else {
+ *vnet_hdr = 0;
}
if (vnet_hdr_required && !*vnet_hdr) {