From: Chuck Lever <chuck.lever@oracle.com>
Date: Tue, 11 Sep 2007 22:00:36 +0000 (-0400)
Subject: SUNRPC: Retry bad rpcbind replies
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4784cb51a3f66d401f8a08810231aa7dc8f44e43;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

SUNRPC: Retry bad rpcbind replies

When a server returns a bad rpcbind reply, make rpcbind client recovery logic
retry with an older protocol version.  Older versions are more likely to work
correctly.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---

diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index 34738c5cf312..a0c9f6905517 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -446,6 +446,10 @@ static void rpcb_getport_done(struct rpc_task *child, void *data)
 	struct rpc_xprt *xprt = map->r_xprt;
 	int status = child->tk_status;
 
+	/* Garbage reply: retry with a lesser rpcbind version */
+	if (status == -EIO)
+		status = -EPROTONOSUPPORT;
+
 	/* rpcbind server doesn't support this rpcbind protocol version */
 	if (status == -EPROTONOSUPPORT)
 		xprt->bind_index++;