bnx2x: Take the distribution range definition out of skb_tx_hash()

Move the calcualation of the Tx hash for a given hash range into a separate
function and define the skb_tx_hash(), which calculates a Tx hash for a
[0; dev->real_num_tx_queues - 1] hash values range, using this
function (__skb_tx_hash()).

Signed-off-by: Vladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 13 insertions, 2 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index d31bc3c94717..445e6825f8eb 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1747,6 +1747,16 @@ static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
                 __netif_schedule(txq->qdisc);
 }
 
+/*
+ * Returns a Tx hash for the given packet when dev->real_num_tx_queues is used
+ * as a distribution range limit for the returned value.
+ */
+static inline u16 skb_tx_hash(const struct net_device *dev,
+                              const struct sk_buff *skb)
+{
+        return __skb_tx_hash(dev, skb, dev->real_num_tx_queues);
+}
+
 /**
  *      netif_is_multiqueue - test if device has multiple transmit queues
  *      @dev: network device
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 19f37a6ee6c4..4c4bec6316d9 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -2165,8 +2165,9 @@ static inline bool skb_rx_queue_recorded(const struct sk_buff *skb)
         return skb->queue_mapping != 0;
 }
 
-extern u16 skb_tx_hash(const struct net_device *dev,
-                       const struct sk_buff *skb);
+extern u16 __skb_tx_hash(const struct net_device *dev,
+                         const struct sk_buff *skb,
+                         unsigned int num_tx_queues);
 
 #ifdef CONFIG_XFRM
 static inline struct sec_path *skb_sec_path(struct sk_buff *skb)