slirp: Factor out internal state structure

The essence of this patch is to stuff (almost) all global variables of
the slirp stack into the structure Slirp. In this step, we still keep
the structure as global variable, directly accessible by the whole
stack. Changes to the external interface of slirp will be applied in
the following patches.

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

1 files changed, 10 insertions, 0 deletions

diff --git a/slirp/tftp.h b/slirp/tftp.h
index 8f2675e077..1415c8527b 100644
--- a/slirp/tftp.h
+++ b/slirp/tftp.h
@@ -30,4 +30,14 @@ struct tftp_t {
   } x;
 };
 
+struct tftp_session {
+    Slirp *slirp;
+    char *filename;
+
+    struct in_addr client_ip;
+    u_int16_t client_port;
+
+    int timestamp;
+};
+
 void tftp_input(struct mbuf *m);