flow_dissector: Abstract out hash computation

Move the hash computation located in __skb_get_hash to be a separate
function which takes flow_keys as input. This will allow flow hash
computation in other contexts where we only have addresses and ports.

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/include/net/flow_keys.h b/include/net/flow_keys.h
index fbefdca5e283..6667a054763a 100644
--- a/include/net/flow_keys.h
+++ b/include/net/flow_keys.h
@@ -29,4 +29,5 @@ struct flow_keys {
 
 bool skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow);
 __be32 skb_flow_get_ports(const struct sk_buff *skb, int thoff, u8 ip_proto);
+u32 flow_hash_from_keys(struct flow_keys *keys);
 #endif