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skb: expose and constify hash primitives

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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
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9
include/linux/skbuff.h
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@@ -1969,7 +1969,7 @@ static inline void skb_set_queue_mapping(struct sk_buff *skb, u16 queue_mapping)
skb->queue_mapping = queue_mapping;
}
static inline u16 skb_get_queue_mapping(struct sk_buff *skb)
static inline u16 skb_get_queue_mapping(const struct sk_buff *skb)
{
return skb->queue_mapping;
}
@@ -1984,16 +1984,19 @@ static inline void skb_record_rx_queue(struct sk_buff *skb, u16 rx_queue)
skb->queue_mapping = rx_queue + 1;
}
static inline u16 skb_get_rx_queue(struct sk_buff *skb)
static inline u16 skb_get_rx_queue(const struct sk_buff *skb)
{
return skb->queue_mapping - 1;
}
static inline bool skb_rx_queue_recorded(struct sk_buff *skb)
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);
#ifdef CONFIG_XFRM
static inline struct sec_path *skb_sec_path(struct sk_buff *skb)
{