SUNRPC allow for unspecified transport time in rpc_clnt_add_xprt

[ Upstream commit b8a09619a56334414cbd7f935a0796240d0cc07e ]

If the supplied argument doesn't specify the transport type, use the
type of the existing rpc clnt and its existing transport.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index f056ff93144427da8f9dcf5c74da2629b1f66b0a..5da1d7e8468a52fca353cf96b07fdf6129bfa635 100644 (file)
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -2903,7 +2903,7 @@ int rpc_clnt_add_xprt(struct rpc_clnt *clnt,
        unsigned long connect_timeout;
        unsigned long reconnect_timeout;
        unsigned char resvport, reuseport;
-       int ret = 0;
+       int ret = 0, ident;
 
        rcu_read_lock();
        xps = xprt_switch_get(rcu_dereference(clnt->cl_xpi.xpi_xpswitch));
@@ -2917,8 +2917,11 @@ int rpc_clnt_add_xprt(struct rpc_clnt *clnt,
        reuseport = xprt->reuseport;
        connect_timeout = xprt->connect_timeout;
        reconnect_timeout = xprt->max_reconnect_timeout;
+       ident = xprt->xprt_class->ident;
        rcu_read_unlock();
 
+       if (!xprtargs->ident)
+               xprtargs->ident = ident;
        xprt = xprt_create_transport(xprtargs);
        if (IS_ERR(xprt)) {
                ret = PTR_ERR(xprt);