svc: Add a generic transport svc_create_xprt function
The svc_create_xprt function is a transport independent version
of the svc_makesock function.
Since transport instance creation contains transport dependent and
independent components, add an xpo_create transport function. The
transport implementation of this function allocates the memory for the
endpoint, implements the transport dependent initialization logic, and
calls svc_xprt_init to initialize the transport independent field (svc_xprt)
in it's data structure.
Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Acked-by: Neil Brown <neilb@suse.de>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Greg Banks <gnb@sgi.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index fe5270f..6ff5ca7 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -81,3 +81,40 @@
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);