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, 18 insertions, 16 deletions

diff --git a/libslirp.h b/libslirp.h
index 147ae95..955d55c 100644
--- a/libslirp.h
+++ b/libslirp.h
@@ -8,11 +8,11 @@
 struct Slirp;
 typedef struct Slirp Slirp;
 
-void slirp_init(int restricted, struct in_addr vnetwork,
-                struct in_addr vnetmask, struct in_addr vhost,
-                const char *vhostname, const char *tftp_path,
-                const char *bootfile, struct in_addr vdhcp_start,
-                struct in_addr vnameserver);
+Slirp *slirp_init(int restricted, struct in_addr vnetwork,
+                  struct in_addr vnetmask, struct in_addr vhost,
+                  const char *vhostname, const char *tftp_path,
+                  const char *bootfile, struct in_addr vdhcp_start,
+                  struct in_addr vnameserver, void *opaque);
 
 void slirp_select_fill(int *pnfds, fd_set *readfds, fd_set *writefds,
                        fd_set *xfds);
@@ -20,23 +20,25 @@ void slirp_select_fill(int *pnfds, fd_set *readfds, fd_set *writefds,
 void slirp_select_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds,
                        int select_error);
 
-void slirp_input(const uint8_t *pkt, int pkt_len);
+void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len);
 
 /* you must provide the following functions: */
-int slirp_can_output(void);
-void slirp_output(const uint8_t *pkt, int pkt_len);
+int slirp_can_output(void *opaque);
+void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len);
 
-int slirp_add_hostfwd(int is_udp, struct in_addr host_addr, int host_port,
-                      struct in_addr guest_addr, int guest_port);
-int slirp_remove_hostfwd(int is_udp, struct in_addr host_addr, int host_port);
-int slirp_add_exec(int do_pty, const void *args, struct in_addr guest_addr,
-                   int guest_port);
+int slirp_add_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr,
+                      int host_port, struct in_addr guest_addr, int guest_port);
+int slirp_remove_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr,
+                         int host_port);
+int slirp_add_exec(Slirp *slirp, int do_pty, const void *args,
+                   struct in_addr guest_addr, int guest_port);
 
-void slirp_connection_info(Monitor *mon);
+void slirp_connection_info(Slirp *slirp, Monitor *mon);
 
-void slirp_socket_recv(struct in_addr guest_addr, int guest_port,
+void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr, int guest_port,
                        const uint8_t *buf, int size);
-size_t slirp_socket_can_recv(struct in_addr guest_addr, int guest_port);
+size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr,
+                             int guest_port);
 
 #else /* !CONFIG_SLIRP */