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ftgmac100: fix multicast hash routine

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Based on the multicast hash calculation of the FTGMAC100 Linux driver.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180530061711.23673-4-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Cédric Le Goater 2018-06-08 13:15:32 +01:00 committed by Peter Maydell
parent 8576b12df7
commit 44effc1f99
1 changed files with 2 additions and 2 deletions
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4
hw/net/ftgmac100.c
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@ -776,8 +776,8 @@ static int ftgmac100_filter(FTGMAC100State *s, const uint8_t *buf, size_t len)
return 0;
}
/* TODO: this does not seem to work for ftgmac100 */
mcast_idx = net_crc32(buf, ETH_ALEN) >> 26;
mcast_idx = net_crc32_le(buf, ETH_ALEN);
mcast_idx = (~(mcast_idx >> 2)) & 0x3f;
if (!(s->math[mcast_idx / 32] & (1 << (mcast_idx % 32)))) {
return 0;
}