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virtio-net: minor code simplification 

During packet filtering, we can now use host hdr len
to offset incoming buffer unconditionally.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
master
Michael S. Tsirkin 2012-09-24 16:27:27 +02:00
parent 7b80d08efc
commit e043ebc6f9
1 changed files with 1 additions and 3 deletions
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4
hw/virtio-net.c
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@ -544,9 +544,7 @@ static int receive_filter(VirtIONet *n, const uint8_t *buf, int size)
if (n->promisc)
return 1;
if (n->has_vnet_hdr) {
ptr += sizeof(struct virtio_net_hdr);
}
ptr += n->host_hdr_len;
if (!memcmp(&ptr[12], vlan, sizeof(vlan))) {
int vid = be16_to_cpup((uint16_t *)(ptr + 14)) & 0xfff;