skb: expose and constify hash primitives

Some minor changes to queue hashing:
 1. Use const on accessor functions
 2. Export skb_tx_hash for use in drivers (see ixgbe)

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger
2009-03-21 13:39:26 -07:00
committed by David S. Miller
parent 1f1900f935
commit 9247744e5e
2 changed files with 8 additions and 4 deletions

View File

@@ -1725,7 +1725,7 @@ out_kfree_skb:
static u32 skb_tx_hashrnd;
static u16 skb_tx_hash(struct net_device *dev, struct sk_buff *skb)
u16 skb_tx_hash(const struct net_device *dev, const struct sk_buff *skb)
{
u32 hash;
@@ -1740,6 +1740,7 @@ static u16 skb_tx_hash(struct net_device *dev, struct sk_buff *skb)
return (u16) (((u64) hash * dev->real_num_tx_queues) >> 32);
}
EXPORT_SYMBOL(skb_tx_hash);
static struct netdev_queue *dev_pick_tx(struct net_device *dev,
struct sk_buff *skb)