SUNRPC: allow disabling idle timeout

In the gss-proxy case we don't want to have to reconnect at random--we
want to connect only on gss-proxy startup when we can steal gss-proxy's
context to do the connect in the right namespace.

So, provide a flag that allows the rpc_create caller to turn off the
idle timeout.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

4 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index e7d492ce7c18..bfe11be81f6f 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -125,6 +125,7 @@ struct rpc_create_args {
 #define RPC_CLNT_CREATE_DISCRTRY        (1UL << 5)
 #define RPC_CLNT_CREATE_QUIET           (1UL << 6)
 #define RPC_CLNT_CREATE_INFINITE_SLOTS  (1UL << 7)
+#define RPC_CLNT_CREATE_NO_IDLE_TIMEOUT (1UL << 8)
 
 struct rpc_clnt *rpc_create(struct rpc_create_args *args);
 struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *,
diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index ff5392421cb2..cec7b9b5e1bf 100644
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -256,6 +256,7 @@ static inline int bc_prealloc(struct rpc_rqst *req)
 #endif /* CONFIG_SUNRPC_BACKCHANNEL */
 
 #define XPRT_CREATE_INFINITE_SLOTS      (1U)
+#define XPRT_CREATE_NO_IDLE_TIMEOUT     (1U << 1)
 
 struct xprt_create {
         int                     ident;          /* XPRT_TRANSPORT identifier */
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 651245aa829a..80cf23241da9 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -416,6 +416,8 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
 
         if (args->flags & RPC_CLNT_CREATE_INFINITE_SLOTS)
                 xprtargs.flags |= XPRT_CREATE_INFINITE_SLOTS;
+        if (args->flags & RPC_CLNT_CREATE_NO_IDLE_TIMEOUT)
+                xprtargs.flags |= XPRT_CREATE_NO_IDLE_TIMEOUT;
         /*
          * If the caller chooses not to specify a hostname, whip
          * up a string representation of the passed-in address.
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 745fca3cfd36..095363eee764 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -1300,6 +1300,8 @@ found:
                                 -PTR_ERR(xprt));
                 goto out;
         }
+        if (args->flags & XPRT_CREATE_NO_IDLE_TIMEOUT)
+                xprt->idle_timeout = 0;
         INIT_WORK(&xprt->task_cleanup, xprt_autoclose);
         if (xprt_has_timer(xprt))
                 setup_timer(&xprt->timer, xprt_init_autodisconnect,