inany: Introduce union sockaddr_inany

There are a number of places where we want to handle either a
sockaddr_in or a sockaddr_in6.  In some of those we use a void *,
which works ok and matches some standard library interfaces, but
doesn't give a signature level hint that we're dealing with only
sockaddr_in or sockaddr_in6, not (say) sockaddr_un or another type of
socket address.  Other places we use a sockaddr_storage, which also
works, but has the same problem in addition to allocating more on the
stack than we need to.

Introduce union sockaddr_inany to explictly handle this case: it has
variants for sockaddr_in and sockaddr_in6.  Use it in a number of
places where it's easy to do so.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/tcp_splice.c b/tcp_splice.c
index cdc09a4..beb2fcb 100644
--- a/tcp_splice.c
+++ b/tcp_splice.c
@@ -447,7 +447,7 @@ static int tcp_splice_new(const struct ctx *c, struct tcp_splice_conn *conn,
 bool tcp_splice_conn_from_sock(const struct ctx *c,
 			       union tcp_listen_epoll_ref ref,
 			       struct tcp_splice_conn *conn, int s,
-			       const struct sockaddr *sa)
+			       const union sockaddr_inany *sa)
 {
 	union inany_addr aany;
 	in_port_t port;