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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
commit bdeab99191
9 changed files with 39 additions and 19 deletions
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15
include/net/sock.h
View file

@ -686,16 +686,25 @@ static inline void sock_rps_reset_flow(const struct sock *sk)
#endif
}
static inline void sock_rps_save_rxhash(struct sock *sk, u32 rxhash)
static inline void sock_rps_save_rxhash(struct sock *sk,
const struct sk_buff *skb)
{
#ifdef CONFIG_RPS
if (unlikely(sk->sk_rxhash != rxhash)) {
if (unlikely(sk->sk_rxhash != skb->rxhash)) {
sock_rps_reset_flow(sk);
sk->sk_rxhash = rxhash;
sk->sk_rxhash = skb->rxhash;
}
#endif
}
static inline void sock_rps_reset_rxhash(struct sock *sk)
{
#ifdef CONFIG_RPS
sock_rps_reset_flow(sk);
sk->sk_rxhash = 0;
#endif
}
#define sk_wait_event(__sk, __timeo, __condition) \
({ int __rc; \
release_sock(__sk); \