macvtap: advance iov iterator when needed in macvtap_put_user()
authorJason Wang <jasowang@redhat.com>
Thu, 20 Nov 2014 08:31:05 +0000 (16:31 +0800)
committerDavid S. Miller <davem@davemloft.net>
Fri, 21 Nov 2014 19:59:19 +0000 (14:59 -0500)
commit7cc76f51508219a74dca835745e4f84393820017
treece85b76a4947f86157ae0272dda1e67fd766fea3
parent914efb02befeedbd71a6f115c9d2fb38a34af04d
macvtap: advance iov iterator when needed in macvtap_put_user()

When mergeable buffer is used, vnet_hdr_sz is greater than sizeof struct
virtio_net_hdr. So we need advance the iov iterators in this case.

Fixes 6c36d2e26cda1ad3e2c4b90dd843825fc62fe5b4 ("macvtap: Use iovec iterators")
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/macvtap.c