epoll: Use different epoll types for passt and pasta tap fds

Currently we have a single epoll event type for the "tap" fd, which could
be either a handle on a /dev/net/tun device (pasta) or a connected Unix
socket (passt).  However for the two modes we call different handler
functions.  Simplify this a little by using different epoll types and
dispatching directly to the correct handler function.

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

1 files changed, 4 insertions, 2 deletions

diff --git a/passt.h b/passt.h
index dbadec2..0500ff0 100644
--- a/passt.h
+++ b/passt.h
@@ -61,8 +61,10 @@ enum epoll_type {
 	EPOLL_TYPE_ICMPV6,
 	/* inotify fd watching for end of netns (pasta) */
 	EPOLL_TYPE_NSQUIT,
-	/* tap char device, or connected qemu socket fd */
-	EPOLL_TYPE_TAP,
+	/* tuntap character device */
+	EPOLL_TYPE_TAP_PASTA,
+	/* socket connected to qemu  */
+	EPOLL_TYPE_TAP_PASST,
 	/* socket listening for qemu socket connections */
 	EPOLL_TYPE_TAP_LISTEN,