Commit ec330628 authored Feb 11, 2020 by Sameeh Jubran Committed by Greg Kroah-Hartman Mar 05, 2020

net: ena: rss: fix failure to get indirection table



[ Upstream commit 0c8923c0a64fb5d14bebb9a9065d2dc25ac5e600 ]

On old hardware, getting / setting the hash function is not supported while
gettting / setting the indirection table is.

This commit enables us to still show the indirection table on older
hardwares by setting the hash function and key to NULL.

Fixes: 1738cd3e ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 4add6f2a

drivers/net/ethernet/amazon/ena/ena_ethtool.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -661,7 +661,21 @@ static int ena_get_rxfh(struct net_device netdev, u32 indir, u8 *key,
		if (rc)
		return rc;

		/* We call this function in order to check if the device
		* supports getting/setting the hash function.
		*/
		rc = ena_com_get_hash_function(adapter->ena_dev, &ena_func, key);

		if (rc) {
		if (rc == -EOPNOTSUPP) {
		key = NULL;
		hfunc = NULL;
		rc = 0;
		}

		return rc;
		}

		if (rc)
		return rc;