From: Chuck Lever <chuck.lever@oracle.com>
Date: Tue, 10 Oct 2023 17:23:41 +0000 (-0400)
Subject: svcrdma: Drop connection after an RDMA Read error
X-Git-Tag: v6.6.7~693
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=be739f32a45931c2cfd0f260bb7e11b33a94cd07;p=platform%2Fkernel%2Flinux-starfive.git

svcrdma: Drop connection after an RDMA Read error

commit 197115ebf358cb440c73e868b2a0a5ef728decc6 upstream.

When an RPC Call message cannot be pulled from the client, that
is a message loss, by definition. Close the connection to trigger
the client to resend.

Cc: <stable@vger.kernel.org>
Reviewed-by: Tom Talpey <tom@talpey.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
index 85c8bca..3b05f90 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
@@ -852,7 +852,8 @@ out_readfail:
 	if (ret == -EINVAL)
 		svc_rdma_send_error(rdma_xprt, ctxt, ret);
 	svc_rdma_recv_ctxt_put(rdma_xprt, ctxt);
-	return ret;
+	svc_xprt_deferred_close(xprt);
+	return -ENOTCONN;
 
 out_backchannel:
 	svc_rdma_handle_bc_reply(rqstp, ctxt);