2 files changed, 37 insertions, 0 deletions
diff --git a/net.c b/net.c
index 30ba71791c..8bba09c104 100644
--- a/net.c
+++ b/net.c
@@ -1497,6 +1497,40 @@ VLANState *qemu_find_vlan(int id)
     return vlan;
 }
 
+void qemu_check_nic_model(NICInfo *nd, const char *model)
+{
+    const char *models[2];
+
+    models[0] = model;
+    models[1] = NULL;
+
+    qemu_check_nic_model_list(nd, models, model);
+}
+
+void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
+                               const char *default_model)
+{
+    int i, exit_status = 0;
+
+    if (!nd->model)
+        nd->model = strdup(default_model);
+
+    if (strcmp(nd->model, "?") != 0) {
+        for (i = 0 ; models[i]; i++)
+            if (strcmp(nd->model, models[i]) == 0)
+                return;
+
+        fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
+        exit_status = 1;
+    }
+
+    fprintf(stderr, "qemu: Supported NIC models: ");
+    for (i = 0 ; models[i]; i++)
+        fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
+
+    exit(exit_status);
+}
+
 int net_client_init(const char *device, const char *p)
 {
     char buf[1024];
diff --git a/net.h b/net.h
index e79ee3d70a..291807a65c 100644
--- a/net.h
+++ b/net.h
@@ -47,6 +47,9 @@ ssize_t qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov,
                           int iovcnt);
 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size);
 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]);
+void qemu_check_nic_model(NICInfo *nd, const char *model);
+void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
+                               const char *default_model);
 void qemu_handler_true(void *opaque);
 
 void do_info_network(void);