diff options
| author | Tom Herbert <therbert@google.com> | 2011-08-14 21:45:55 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-08-18 05:06:03 +0200 |
| commit | bdeab991918663aed38757904219e8398214334c (patch) | |
| tree | bc6c02da7ed88e3e568677b4a35fb4e55de363de /include/net/dst.h | |
| parent | rps: Some minor cleanup in get_rps_cpus (diff) | |
| download | linux-bdeab991918663aed38757904219e8398214334c.tar.xz linux-bdeab991918663aed38757904219e8398214334c.zip | |
rps: Add flag to skb to indicate rxhash is based on L4 tuple
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>
Diffstat (limited to 'include/net/dst.h')
| -rw-r--r-- | include/net/dst.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/net/dst.h b/include/net/dst.h index 13d507d69ddb..4fb6c4381791 100644 --- a/include/net/dst.h +++ b/include/net/dst.h @@ -325,7 +325,14 @@ static inline void skb_dst_force(struct sk_buff *skb) static inline void __skb_tunnel_rx(struct sk_buff *skb, struct net_device *dev) { skb->dev = dev; - skb->rxhash = 0; + + /* + * Clear rxhash so that we can recalulate the hash for the + * encapsulated packet, unless we have already determine the hash + * over the L4 4-tuple. + */ + if (!skb->l4_rxhash) + skb->rxhash = 0; skb_set_queue_mapping(skb, 0); skb_dst_drop(skb); nf_reset(skb); |