[PATCH v3 0/2] RDMA/rxe: Fix no completion event issue

From: Li Zhijian <lizhijian@fujitsu.com>
To: Yanjun Zhu <yanjun.zhu@linux.dev>, Jason Gunthorpe <jgg@ziepe.ca>,
	"Haakon Bugge" <haakon.bugge@oracle.com>,
	Cheng Xu <chengyou@linux.alibaba.com>,
	<linux-rdma@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>, Li Zhijian <lizhijian@fujitsu.com>
Subject: [PATCH v3 0/2] RDMA/rxe: Fix no completion event issue
Date: Mon, 16 May 2022 09:53:27 +0800	[thread overview]
Message-ID: <20220516015329.445474-1-lizhijian@fujitsu.com> (raw)

Since RXE always posts RDMA_WRITE successfully, it's observed that
no more completion occurs after a few incorrect posts. Actually, it
will block the polling. we can easily reproduce it by the below pattern.

a. post correct RDMA_WRITE
b. poll completion event
while true {
  c. post incorrect RDMA_WRITE(wrong rkey for example)
  d. poll completion event <<<< block after 2 incorrect RDMA_WRITE posts
}

Li Zhijian (2):
  RDMA/rxe: Update wqe_index for each wqe error completion
  RDMA/rxe: Generate error completion for error requester QP state

 drivers/infiniband/sw/rxe/rxe_req.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

-- 
2.31.1