be2net:use netdev_rss_key_fill() helper

Use netdev_rss_key_fill() helper, as it provides better support for some
bonding setups.
Rename rss_hkey local variable to rss_key to have consistent name among
drivers.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Sathya Perla <sathya.perla@emulex.com>
Cc: Subbu Seetharaman <subbu.seetharaman@emulex.com>
Cc: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/emulex/benet/be_main.c

@@ -2853,10 +2853,10 @@ static int be_close(struct net_device *netdev)
 
 static int be_rx_qs_create(struct be_adapter *adapter)
 {
+	struct rss_info *rss = &adapter->rss_info;
+	u8 rss_key[RSS_HASH_KEY_LEN];
 	struct be_rx_obj *rxo;
 	int rc, i, j;
-	u8 rss_hkey[RSS_HASH_KEY_LEN];
-	struct rss_info *rss = &adapter->rss_info;
 
 	for_all_rx_queues(adapter, rxo, i) {
 		rc = be_queue_alloc(adapter, &rxo->q, RX_Q_LEN,
@@ -2901,15 +2901,15 @@ static int be_rx_qs_create(struct be_adapter *adapter)
 		rss->rss_flags = RSS_ENABLE_NONE;
 	}
 
-	get_random_bytes(rss_hkey, RSS_HASH_KEY_LEN);
+	netdev_rss_key_fill(rss_key, RSS_HASH_KEY_LEN);
 	rc = be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
-			       128, rss_hkey);
+			       128, rss_key);
 	if (rc) {
 		rss->rss_flags = RSS_ENABLE_NONE;
 		return rc;
 	}
 
-	memcpy(rss->rss_hkey, rss_hkey, RSS_HASH_KEY_LEN);
+	memcpy(rss->rss_hkey, rss_key, RSS_HASH_KEY_LEN);
 
 	/* First time posting */
 	for_all_rx_queues(adapter, rxo, i)