diff mbox series

[V1,net,1/7] net: ena: Fix toeplitz initial hash value

Message ID 20221229073011.19687-2-darinzon@amazon.com (mailing list archive)
State Accepted
Commit 332b49ff637d6c1a75b971022a8b992cf3c57db1
Delegated to: Netdev Maintainers
Headers show
Series ENA driver bug fixes | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net
netdev/fixes_present success Fixes tag present in non-next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers fail 1 blamed authors not CCed: sameehj@amazon.com; 3 maintainers not CCed: edumazet@google.com sameehj@amazon.com pabeni@redhat.com
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch warning CHECK: Unnecessary parentheses around 'func == ENA_ADMIN_TOEPLITZ'
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Arinzon, David Dec. 29, 2022, 7:30 a.m. UTC 
From: David Arinzon <darinzon@amazon.com>

On driver initialization, RSS hash initial value is set to zero,
instead of the default value. This happens because we pass NULL as
the RSS key parameter, which caused us to never initialize
the RSS hash value.

This patch fixes it by making sure the initial value is set, no matter
what the value of the RSS key is.

Fixes: 91a65b7d3ed8 ("net: ena: fix potential crash when rxfh key is NULL")
Signed-off-by: Nati Koler <nkoler@amazon.com>
Signed-off-by: David Arinzon <darinzon@amazon.com>
---
 drivers/net/ethernet/amazon/ena/ena_com.c | 29 +++++++----------------
 1 file changed, 9 insertions(+), 20 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/amazon/ena/ena_com.c b/drivers/net/ethernet/amazon/ena/ena_com.c
index 8c8b4c88c7de..451c3a1b6255 100644
--- a/drivers/net/ethernet/amazon/ena/ena_com.c
+++ b/drivers/net/ethernet/amazon/ena/ena_com.c
@@ -2400,29 +2400,18 @@  int ena_com_fill_hash_function(struct ena_com_dev *ena_dev,
 		return -EOPNOTSUPP;
 	}
 
-	switch (func) {
-	case ENA_ADMIN_TOEPLITZ:
-		if (key) {
-			if (key_len != sizeof(hash_key->key)) {
-				netdev_err(ena_dev->net_device,
-					   "key len (%u) doesn't equal the supported size (%zu)\n",
-					   key_len, sizeof(hash_key->key));
-				return -EINVAL;
-			}
-			memcpy(hash_key->key, key, key_len);
-			rss->hash_init_val = init_val;
-			hash_key->key_parts = key_len / sizeof(hash_key->key[0]);
+	if ((func == ENA_ADMIN_TOEPLITZ) && key) {
+		if (key_len != sizeof(hash_key->key)) {
+			netdev_err(ena_dev->net_device,
+				   "key len (%u) doesn't equal the supported size (%zu)\n",
+				   key_len, sizeof(hash_key->key));
+			return -EINVAL;
 		}
-		break;
-	case ENA_ADMIN_CRC32:
-		rss->hash_init_val = init_val;
-		break;
-	default:
-		netdev_err(ena_dev->net_device, "Invalid hash function (%d)\n",
-			   func);
-		return -EINVAL;
+		memcpy(hash_key->key, key, key_len);
+		hash_key->key_parts = key_len / sizeof(hash_key->key[0]);
 	}
 
+	rss->hash_init_val = init_val;
 	old_func = rss->hash_func;
 	rss->hash_func = func;
 	rc = ena_com_set_hash_function(ena_dev);