On 05/29/2018 03:28 AM, Cédric Le Goater wrote:
> Based on the multicast hash calculation of the FTGMAC100 Linux driver.
>
> Signed-off-by: Cédric Le Goater <c...@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <f4...@amsat.org>
> ---
> hw/net/ftgmac100.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/hw/net/ftgmac100.c b/hw/net/ftgmac100.c
> index 50af1222464a..fd7699b1c05e 100644
> --- a/hw/net/ftgmac100.c
> +++ b/hw/net/ftgmac100.c
> @@ -778,8 +778,8 @@ 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;
> }
>
