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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: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
This commit is contained in:
Alex Williamson 2009-06-05 14:47:02 -06:00 committed by Mark McLoughlin
parent f10c592e8d
commit bbe2f399b2
1 changed files with 11 additions and 8 deletions
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19
hw/virtio-net.c
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@ -347,14 +347,17 @@ static int receive_filter(VirtIONet *n, const uint8_t *buf, int size)
return 0;
}
if ((ptr[0] & 1) && n->allmulti)
return 1;
if (!memcmp(ptr, bcast, sizeof(bcast)))
return 1;
if (!memcmp(ptr, n->mac, ETH_ALEN))
return 1;
if (ptr[0] & 1) { // multicast
if (!memcmp(ptr, bcast, sizeof(bcast))) {
return 1;
} else if (n->allmulti) {
return 1;
}
} 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))