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[snp] Try promiscuous multicast receive filter if the regular one fails 

Currently, if the SNP driver for whatever reason fails to enable
receive filters for multicast frames, it falls back to enabling just
unicast and broadcast filters.  This breaks some IPv6 functionality as
the network card does not respond to neighbour solicitation requests.

Some cards refuse to enable EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST, but
do support enabling EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST,
so try it before falling back to just unicast+broadcast.

Signed-off-by: Ignat Korchagin <ignat@cloudflare.com>
Split-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/100/head
Ignat Korchagin 2019-12-13 16:17:58 +00:00 committed by Michael Brown
parent a2d3bedf1f
commit ed4a82e239
1 changed files with 3 additions and 0 deletions
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3
src/drivers/net/efi/snpnet.c
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@ -299,6 +299,9 @@ static int snpnet_rx_filters ( struct net_device *netdev ) {
( EFI_SIMPLE_NETWORK_RECEIVE_UNICAST |
EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST |
EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST ),
( EFI_SIMPLE_NETWORK_RECEIVE_UNICAST |
EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST |
EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST ),
( EFI_SIMPLE_NETWORK_RECEIVE_UNICAST |
EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST ),
( EFI_SIMPLE_NETWORK_RECEIVE_UNICAST ),