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rps: Add flag to skb to indicate rxhash is based on L4 tuple

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The l4_rxhash flag was added to the skb structure to indicate
that the rxhash value was computed over the 4 tuple for the
packet which includes the port information in the encapsulated
transport packet.  This is used by the stack to preserve the
rxhash value in __skb_rx_tunnel.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert
2011-08-14 19:45:55 +00:00
committed by David S. Miller
parent 792df22cd0
commit bdeab99191
9 changed files with 39 additions and 19 deletions
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5
include/linux/skbuff.h
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@@ -414,6 +414,7 @@ struct sk_buff {
__u8 ndisc_nodetype:2;
#endif
__u8 ooo_okay:1;
__u8 l4_rxhash:1;
kmemcheck_bitfield_end(flags2);
/* 0/13 bit hole */
@@ -572,11 +573,11 @@ extern unsigned int skb_find_text(struct sk_buff *skb, unsigned int from,
unsigned int to, struct ts_config *config,
struct ts_state *state);
extern __u32 __skb_get_rxhash(struct sk_buff *skb);
extern void __skb_get_rxhash(struct sk_buff *skb);
static inline __u32 skb_get_rxhash(struct sk_buff *skb)
{
if (!skb->rxhash)
skb->rxhash = __skb_get_rxhash(skb);
__skb_get_rxhash(skb);
return skb->rxhash;
}