flow: Properly type callbacks to protocol specific handlers

The flow dispatches deferred and timer handling for flows centrally, but
needs to call into protocol specific code for the handling of individual
flows.  Currently this passes a general union flow *.  It makes more sense
to pass the specific relevant flow type structure.  That brings the check
on the flow type adjacent to casting to the union variant which it tags.

Arguably, this is a slight abstraction violation since it involves the
generic flow code using protocol specific types.  It's already calling into
protocol specific functions, so I don't think this really makes any
difference.

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

1 files changed, 3 insertions, 3 deletions

diff --git a/tcp_conn.h b/tcp_conn.h
index d280b22..52bd815 100644
--- a/tcp_conn.h
+++ b/tcp_conn.h
@@ -155,9 +155,9 @@ struct tcp_splice_conn {
 extern int init_sock_pool4	[TCP_SOCK_POOL_SIZE];
 extern int init_sock_pool6	[TCP_SOCK_POOL_SIZE];
 
-bool tcp_flow_defer(union flow *flow);
-bool tcp_splice_flow_defer(union flow *flow);
-void tcp_splice_timer(const struct ctx *c, union flow *flow);
+bool tcp_flow_defer(const struct tcp_tap_conn *conn);
+bool tcp_splice_flow_defer(struct tcp_splice_conn *conn);
+void tcp_splice_timer(const struct ctx *c, struct tcp_splice_conn *conn);
 int tcp_conn_pool_sock(int pool[]);
 int tcp_conn_sock(const struct ctx *c, sa_family_t af);
 int tcp_sock_refill_pool(const struct ctx *c, int pool[], sa_family_t af);