From: Chuck Lever <chuck.lever@oracle.com>
Date: Mon, 23 Dec 2019 15:28:44 +0000 (-0500)
Subject: SUNRPC: call_connect_status should handle -EPROTO
X-Git-Tag: v5.15~4515^2~55
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b8457606d95f219052cbcf07bd54c24c4290cd49;p=platform%2Fkernel%2Flinux-starfive.git

SUNRPC: call_connect_status should handle -EPROTO

The xprtrdma connect logic can return -EPROTO if the underlying
device or network path does not support RDMA. This can happen
after a device removal/insertion.

- When SOFTCONN is set, EPROTO is a permanent error.

- When SOFTCONN is not set, EPROTO is treated as a temporary error.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
---

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index a337976..7324b21 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -2130,6 +2130,7 @@ call_connect_status(struct rpc_task *task)
 	case -ENETUNREACH:
 	case -EHOSTUNREACH:
 	case -EPIPE:
+	case -EPROTO:
 		xprt_conditional_disconnect(task->tk_rqstp->rq_xprt,
 					    task->tk_rqstp->rq_connect_cookie);
 		if (RPC_IS_SOFTCONN(task))