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>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 27002dffe7ed..edb66f3e24f1 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -529,6 +529,7 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
         new->mac_header         = old->mac_header;
         skb_dst_copy(new, old);
         new->rxhash             = old->rxhash;
+        new->l4_rxhash          = old->l4_rxhash;
 #ifdef CONFIG_XFRM
         new->sp                 = secpath_get(old->sp);
 #endif