tcp, tcp_splice: Parse listening socket epoll ref in tcp_listen_handler()

tcp_listen_handler() uses the epoll reference for the listening socket
it handles, and also passes on one variant of it to
tcp_tap_conn_from_sock() and tcp_splice_conn_from_sock().  The latter
two functions only need a couple of specific fields from the
reference.

Pass those specific values instead of the whole reference, which
localises the handling of the listening (as opposed to accepted)
socket and its reference entirely within tcp_listen_handler().

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

1 files changed, 3 insertions, 2 deletions

diff --git a/tcp_splice.h b/tcp_splice.h
index d0c6ff7..ed8f0c5 100644
--- a/tcp_splice.h
+++ b/tcp_splice.h
@@ -12,8 +12,9 @@ union sockaddr_inany;
 void tcp_splice_sock_handler(struct ctx *c, union epoll_ref ref,
 			     uint32_t events);
 bool tcp_splice_conn_from_sock(const struct ctx *c,
-			       union tcp_listen_epoll_ref ref, union flow *flow,
-			       int s0, const union sockaddr_inany *sa);
+			       uint8_t pif0, in_port_t dstport,
+			       union flow *flow, int s0,
+			       const union sockaddr_inany *sa);
 void tcp_splice_init(struct ctx *c);
 
 #endif /* TCP_SPLICE_H */