Commit bbe2f399 authored by Alex Williamson's avatar Alex Williamson Committed by Mark McLoughlin
Browse files

virtio-net: reorganize receive_filter() 



Reorganize receive_filter to better handle the split between
unicast and multicast filtering.  This allows us to skip the
broadcast check on unicast packets and leads to more opportunities
for optimization.

Signed-off-by: default avatarAlex Williamson <alex.williamson@hp.com>
Signed-off-by: default avatarMark McLoughlin <markmc@redhat.com>
parent f10c592e

hw/virtio-net.c

+11 −8
Original line number Diff line number Diff line
@@ -347,14 +347,17 @@ static int receive_filter(VirtIONet *n, const uint8_t *buf, int size) 
            return 0;

    }



    if ((ptr[0] & 1) && n->allmulti)

    if (ptr[0] & 1) { // multicast

        if (!memcmp(ptr, bcast, sizeof(bcast))) {

            return 1;



    if (!memcmp(ptr, bcast, sizeof(bcast)))

        } else if (n->allmulti) {

            return 1;



    if (!memcmp(ptr, n->mac, ETH_ALEN))

        }

    } else { // unicast

        if (!memcmp(ptr, n->mac, ETH_ALEN)) {

            return 1;

        }

    }



    for (i = 0; i < n->mac_table.in_use; i++) {

        if (!memcmp(ptr, &n->mac_table.macs[i * ETH_ALEN], ETH_ALEN))