flow: Helper to create sockets based on flowside

We have upcoming use cases where it's useful to create new bound socket
based on information from the flow table.  Add flowside_sock_l4() to do
this for either PIF_HOST or PIF_SPLICE sockets.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/flow.h b/flow.h
index e3a778a..bf6b845 100644
--- a/flow.h
+++ b/flow.h
@@ -164,6 +164,9 @@ static inline bool flowside_eq(const struct flowside *left,
 	       left->fport == right->fport;
 }
 
+int flowside_sock_l4(const struct ctx *c, enum epoll_type type, uint8_t pif,
+		     const struct flowside *tgt, uint32_t data);
+
 /**
  * struct flow_common - Common fields for packet flows
  * @state:	State of the flow table entry