slirp: Save/restore bootp client states

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

slirp/slirp.c

diff --git a/slirp/slirp.c b/slirp/slirp.c
index fb666e6..0ce62a3 100644
--- a/slirp/slirp.c
+++ b/slirp/slirp.c
@@ -222,7 +222,7 @@
 
     slirp->opaque = opaque;
 
-    register_savevm("slirp", 0, 2, slirp_state_save, slirp_state_load, slirp);
+    register_savevm("slirp", 0, 3, slirp_state_save, slirp_state_load, slirp);
 
     TAILQ_INSERT_TAIL(&slirp_instances, slirp, entry);
 
@@ -942,6 +942,16 @@
     slirp_tcp_save(f, so->so_tcpcb);
 }
 
+static void slirp_bootp_save(QEMUFile *f, Slirp *slirp)
+{
+    int i;
+
+    for (i = 0; i < NB_BOOTP_CLIENTS; i++) {
+        qemu_put_be16(f, slirp->bootp_clients[i].allocated);
+        qemu_put_buffer(f, slirp->bootp_clients[i].macaddr, 6);
+    }
+}
+
 static void slirp_state_save(QEMUFile *f, void *opaque)
 {
     Slirp *slirp = opaque;
@@ -961,6 +971,8 @@
     qemu_put_byte(f, 0);
 
     qemu_put_be16(f, slirp->ip_id);
+
+    slirp_bootp_save(f, slirp);
 }
 
 static void slirp_tcp_load(QEMUFile *f, struct tcpcb *tp)
@@ -1057,6 +1069,16 @@
     return 0;
 }
 
+static void slirp_bootp_load(QEMUFile *f, Slirp *slirp)
+{
+    int i;
+
+    for (i = 0; i < NB_BOOTP_CLIENTS; i++) {
+        slirp->bootp_clients[i].allocated = qemu_get_be16(f);
+        qemu_get_buffer(f, slirp->bootp_clients[i].macaddr, 6);
+    }
+}
+
 static int slirp_state_load(QEMUFile *f, void *opaque, int version_id)
 {
     Slirp *slirp = opaque;
@@ -1096,5 +1118,9 @@
         slirp->ip_id = qemu_get_be16(f);
     }
 
+    if (version_id >= 3) {
+        slirp_bootp_load(f, slirp);
+    }
+
     return 0;
 }