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bnx2x: Prevent UDP 4-tuple configurations on older adapters 

Configuring 4-tuple RSS hsahing for UDP
[E.g., by using `ethtool -N <interface> rx-flow-hash udp4 sdfn']
on a 57710/57711 adapter would cause it to assert as HW does not
support such a configuration.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yuval Mintz 2015-10-08 16:19:01 +03:00 committed by David S. Miller
parent 5edc11ab87
commit f9468e8dc8
1 changed files with 7 additions and 0 deletions
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7
drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
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@ -3351,6 +3351,13 @@ static int bnx2x_set_rss_flags(struct bnx2x *bp, struct ethtool_rxnfc *info)
udp_rss_requested = 0;
else
return -EINVAL;
if (CHIP_IS_E1x(bp) && udp_rss_requested) {
DP(BNX2X_MSG_ETHTOOL,
"57710, 57711 boards don't support RSS according to UDP 4-tuple\n");
return -EINVAL;
}
if ((info->flow_type == UDP_V4_FLOW) &&
(bp->rss_conf_obj.udp_rss_v4 != udp_rss_requested)) {
bp->rss_conf_obj.udp_rss_v4 = udp_rss_requested;