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ftgmac100: use inline net_crc32() and bitshift instead of compute_mcast_idx()
author
Mark Cave-Ayland
<mark.cave-ayland@ilande.co.uk>
Fri, 15 Dec 2017 18:41:52 +0000
(18:41 +0000)
committer
Jason Wang
<jasowang@redhat.com>
Fri, 22 Dec 2017 02:01:27 +0000
(10:01 +0800)
This makes it much easier to compare the multicast CRC calculation endian and
bitshift against the Linux driver implementation.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Jason Wang <jasowang@redhat.com>
hw/net/ftgmac100.c
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diff --git
a/hw/net/ftgmac100.c
b/hw/net/ftgmac100.c
index
3c36ab9
..
704f452
100644
(file)
--- a/
hw/net/ftgmac100.c
+++ b/
hw/net/ftgmac100.c
@@
-762,7
+762,7
@@
static int ftgmac100_filter(FTGMAC100State *s, const uint8_t *buf, size_t len)
}
/* TODO: this does not seem to work for ftgmac100 */
- mcast_idx =
compute_mcast_idx(buf)
;
+ mcast_idx =
net_crc32(buf, ETH_ALEN) >> 26
;
if (!(s->math[mcast_idx / 32] & (1 << (mcast_idx % 32)))) {
return 0;
}