slirp: Use internal state in interface

This now also exports the internal state to the slirp users in qemu,
returning it from slirp_init and expecting it along with service
invocations. Additionally provide an opaque value interface for the
callbacks from slirp into the qemu core.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/slirp.h b/slirp.h
index 0cf525d..5cb13aa 100644
--- a/slirp.h
+++ b/slirp.h
@@ -255,6 +255,8 @@ struct Slirp {
     /* tftp states */
     char *tftp_prefix;
     struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
+
+    void *opaque;
 };
 
 extern Slirp slirp_instance;