svc: Add a generic transport svc_create_xprt function

[linux-2.6-omap-h63xx.git] / net / sunrpc / svc_xprt.c

diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index fe5270fae3367684c58515e13bf0432fb9530b99..6ff5ca71602fb5aba8ab5993156caaaf94ac6aa6 100644 (file)
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -81,3 +81,40 @@ void svc_xprt_init(struct svc_xprt_class *xcl, struct svc_xprt *xprt)
        xprt->xpt_ops = xcl->xcl_ops;
 }
 EXPORT_SYMBOL_GPL(svc_xprt_init);
+
+int svc_create_xprt(struct svc_serv *serv, char *xprt_name, unsigned short port,
+                   int flags)
+{
+       struct svc_xprt_class *xcl;
+       int ret = -ENOENT;
+       struct sockaddr_in sin = {
+               .sin_family             = AF_INET,
+               .sin_addr.s_addr        = INADDR_ANY,
+               .sin_port               = htons(port),
+       };
+       dprintk("svc: creating transport %s[%d]\n", xprt_name, port);
+       spin_lock(&svc_xprt_class_lock);
+       list_for_each_entry(xcl, &svc_xprt_class_list, xcl_list) {
+               if (strcmp(xprt_name, xcl->xcl_name) == 0) {
+                       spin_unlock(&svc_xprt_class_lock);
+                       if (try_module_get(xcl->xcl_owner)) {
+                               struct svc_xprt *newxprt;
+                               ret = 0;
+                               newxprt = xcl->xcl_ops->xpo_create
+                                       (serv,
+                                        (struct sockaddr *)&sin, sizeof(sin),
+                                        flags);
+                               if (IS_ERR(newxprt)) {
+                                       module_put(xcl->xcl_owner);
+                                       ret = PTR_ERR(newxprt);
+                               }
+                       }
+                       goto out;
+               }
+       }
+       spin_unlock(&svc_xprt_class_lock);
+       dprintk("svc: transport %s not found\n", xprt_name);
+ out:
+       return ret;
+}
+EXPORT_SYMBOL_GPL(svc_create_xprt);