[V1,net,05/13] net: ena: changes to RSS hash key allocation

Message ID 20200422080923.6697-6-sameehj@amazon.com
State New
Headers show
Series
  • Enhance current features in ena driver
Related show

Commit Message

sameehj@amazon.com April 22, 2020, 8:09 a.m.
From: Sameeh Jubran <sameehj@amazon.com>

This commit contains 2 cosmetic changes:

1. Use ena_com_check_supported_feature_id() in
   ena_com_hash_key_fill_default_key() instead of rewriting
   its implementation. This also saves us a superfluous admin
   command by using the cached value.

2. Change if conditions in ena_com_rss_init() to be clearer.

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
---
 drivers/net/ethernet/amazon/ena/ena_com.c | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

Patch

diff --git a/drivers/net/ethernet/amazon/ena/ena_com.c b/drivers/net/ethernet/amazon/ena/ena_com.c
index d428d0606166..b51bf62af11b 100644
--- a/drivers/net/ethernet/amazon/ena/ena_com.c
+++ b/drivers/net/ethernet/amazon/ena/ena_com.c
@@ -1067,16 +1067,10 @@  static void ena_com_hash_key_fill_default_key(struct ena_com_dev *ena_dev)
 static int ena_com_hash_key_allocate(struct ena_com_dev *ena_dev)
 {
 	struct ena_rss *rss = &ena_dev->rss;
-	struct ena_admin_get_feat_resp get_resp;
-	int rc;
 
-	rc = ena_com_get_feature_ex(ena_dev, &get_resp,
-				    ENA_ADMIN_RSS_HASH_FUNCTION,
-				    ena_dev->rss.hash_key_dma_addr,
-				    sizeof(ena_dev->rss.hash_key), 0);
-	if (unlikely(rc)) {
+	if (!ena_com_check_supported_feature_id(ena_dev,
+						ENA_ADMIN_RSS_HASH_FUNCTION))
 		return -EOPNOTSUPP;
-	}
 
 	rss->hash_key =
 		dma_alloc_coherent(ena_dev->dmadev, sizeof(*rss->hash_key),
@@ -2650,10 +2644,10 @@  int ena_com_rss_init(struct ena_com_dev *ena_dev, u16 indr_tbl_log_size)
 	 * ignore this error and have indirection table support only.
 	 */
 	rc = ena_com_hash_key_allocate(ena_dev);
-	if (unlikely(rc) && rc != -EOPNOTSUPP)
-		goto err_hash_key;
-	else if (rc != -EOPNOTSUPP)
+	if (likely(!rc))
 		ena_com_hash_key_fill_default_key(ena_dev);
+	else if (rc != -EOPNOTSUPP)
+		goto err_hash_key;
 
 	rc = ena_com_hash_ctrl_init(ena_dev);
 	if (unlikely(rc))