macvtap: zerocopy: set SKBTX_DEV_ZEROCOPY only when skb is built successfully
authorJason Wang <jasowang@redhat.com>
Wed, 2 May 2012 03:42:06 +0000 (11:42 +0800)
committerMichael S. Tsirkin <mst@redhat.com>
Wed, 2 May 2012 15:22:20 +0000 (18:22 +0300)
commit01d6657b388438def19c8baaea28e742b6ed32ec
tree7979049df013d023baa9f1a9ae7aa85e350e937c
parent02ce04bb3d28c3333231f43bca677228dbc686fe
macvtap: zerocopy: set SKBTX_DEV_ZEROCOPY only when skb is built successfully

Current the SKBTX_DEV_ZEROCOPY is set unconditionally after
zerocopy_sg_from_iovec(), this would lead NULL pointer when macvtap
fails to build zerocopy skb because destructor_arg was not
initialized. Solve this by set this flag after the skb were built
successfully.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
drivers/net/macvtap.c