From: Fan Yang <yangfan.fan@bytedance.com>
To: Zhu Yanjun <yanjunz@mellanox.com>
Cc: linux-rdma@vger.kernel.org
Subject: [PATCH] RDMA/rxe: fix retry forever when rnr_retry >= 7
Date: Thu, 23 Jul 2020 21:25:17 +0800 [thread overview]
Message-ID: <D1A472F9-6618-41A2-9CA8-B5231BD03D63@bytedance.com> (raw)
Currently when an error occurs and the completion state becomes
COMPST_RNR_RETRY, qp->comp.rnr_retry is only decreased when
qp->comp.rnr_retry != 7.
If the user happens to config the rnr retry count to be >= 7, the
driver will retry forever, instead of exposing IB_WC_RNR_RETRY_EXC_ERR.
---
drivers/infiniband/sw/rxe/rxe_comp.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/infiniband/sw/rxe/rxe_comp.c b/drivers/infiniband/sw/rxe/rxe_comp.c
index 4bc88708b355..16c1870b6482 100644
--- a/drivers/infiniband/sw/rxe/rxe_comp.c
+++ b/drivers/infiniband/sw/rxe/rxe_comp.c
@@ -745,8 +745,7 @@ int rxe_completer(void *arg)
case COMPST_RNR_RETRY:
if (qp->comp.rnr_retry > 0) {
- if (qp->comp.rnr_retry != 7)
- qp->comp.rnr_retry--;
+ qp->comp.rnr_retry--;
qp->req.need_retry = 1;
pr_debug("qp#%d set rnr nak timer\n",
--
2.27.0
next reply other threads:[~2020-07-23 13:25 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-23 13:25 Fan Yang [this message]
2020-07-23 15:42 ` [PATCH] RDMA/rxe: fix retry forever when rnr_retry >= 7 Zhu Yanjun
2020-07-24 14:04 ` [External] " 杨帆
2020-07-24 14:18 ` Jason Gunthorpe
2020-07-24 14:20 ` Fan Yang
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