Commit 8425161a authored by Kohei Enju's avatar Kohei Enju Committed by Jakub Kicinski
Browse files

nfp: fix RSS hash key size when RSS is not supported 



The nfp_net_get_rxfh_key_size() function returns -EOPNOTSUPP when
devices don't support RSS, and callers treat the negative value as a
large positive value since the return type is u32.

Return 0 when devices don't support RSS, aligning with the ethtool
interface .get_rxfh_key_size() that requires returning 0 in such cases.

Fixes: 9ff304bf ("nfp: add support for reporting CRC32 hash function")
Signed-off-by: default avatarKohei Enju <enjuk@amazon.com>
Link: https://patch.msgid.link/20250929054230.68120-1-enjuk@amazon.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent b9bd25f4

drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c

+1 −1
Original line number Diff line number Diff line
@@ -1788,7 +1788,7 @@ static u32 nfp_net_get_rxfh_key_size(struct net_device *netdev) 
	struct nfp_net *nn = netdev_priv(netdev);



	if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY))

		return -EOPNOTSUPP;

		return 0;



	return nfp_net_rss_key_sz(nn);

}