diff mbox series

[net-next,07/12] iavf: Enable setting RSS hash key

Message ID 20211124171652.831184-8-anthony.l.nguyen@intel.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series 40GbE Intel Wired LAN Driver Updates 2021-11-24 | expand

Commit Message

Tony Nguyen Nov. 24, 2021, 5:16 p.m. UTC 
Driver support for changing the RSS hash key exists, however, checks
have caused it to be reported as unsupported. Remove the check and
allow the hash key to be specified.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Tony Brelinski <tony.brelinski@intel.com>
---
 drivers/net/ethernet/intel/iavf/iavf_ethtool.c | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c
index d327f576136f..ddb3f9f1c58e 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c
@@ -1885,7 +1885,7 @@  static int iavf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
  * @key: hash key
  * @hfunc: hash function to use
  *
- * Returns -EINVAL if the table specifies an inavlid queue id, otherwise
+ * Returns -EINVAL if the table specifies an invalid queue id, otherwise
  * returns 0 after programming the table.
  **/
 static int iavf_set_rxfh(struct net_device *netdev, const u32 *indir,
@@ -1894,19 +1894,21 @@  static int iavf_set_rxfh(struct net_device *netdev, const u32 *indir,
 	struct iavf_adapter *adapter = netdev_priv(netdev);
 	u16 i;
 
-	/* We do not allow change in unsupported parameters */
-	if (key ||
-	    (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
+	/* Only support toeplitz hash function */
+	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
 		return -EOPNOTSUPP;
-	if (!indir)
+
+	if (!key && !indir)
 		return 0;
 
 	if (key)
 		memcpy(adapter->rss_key, key, adapter->rss_key_size);
 
-	/* Each 32 bits pointed by 'indir' is stored with a lut entry */
-	for (i = 0; i < adapter->rss_lut_size; i++)
-		adapter->rss_lut[i] = (u8)(indir[i]);
+	if (indir) {
+		/* Each 32 bits pointed by 'indir' is stored with a lut entry */
+		for (i = 0; i < adapter->rss_lut_size; i++)
+			adapter->rss_lut[i] = (u8)(indir[i]);
+	}
 
 	return iavf_config_rss(adapter);
 }