This is a note to let you know that I've just added the patch titled
RDMA/irdma: Report correct WC error when transport retry counter is exceeded
to the 5.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rdma-irdma-report-correct-wc-error-when-transport-re.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit db98f0f6470a29c1d119deff605deb214d88ea24
Author: Sindhu Devale <sindhu.devale@xxxxxxxxx>
Date: Thu Sep 16 14:12:21 2021 -0500
RDMA/irdma: Report correct WC error when transport retry counter is exceeded
[ Upstream commit d3bdcd59633907ee306057b6bb70f06dce47dddc ]
When the retry counter exceeds, as the remote QP didn't send any Ack or
Nack an asynchronous event (AE) for too many retries is generated. Add
code to handle the AE and set the correct IB WC error code
IB_WC_RETRY_EXC_ERR.
Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Link: https://lore.kernel.org/r/20210916191222.824-4-shiraz.saleem@xxxxxxxxx
Signed-off-by: Sindhu Devale <sindhu.devale@xxxxxxxxx>
Signed-off-by: Shiraz Saleem <shiraz.saleem@xxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/irdma/hw.c b/drivers/infiniband/hw/irdma/hw.c
index 33c06a3a4f63..cb9a8e24e3b7 100644
--- a/drivers/infiniband/hw/irdma/hw.c
+++ b/drivers/infiniband/hw/irdma/hw.c
@@ -176,6 +176,9 @@ static void irdma_set_flush_fields(struct irdma_sc_qp *qp,
case IRDMA_AE_LLP_RECEIVED_MPA_CRC_ERROR:
qp->flush_code = FLUSH_GENERAL_ERR;
break;
+ case IRDMA_AE_LLP_TOO_MANY_RETRIES:
+ qp->flush_code = FLUSH_RETRY_EXC_ERR;
+ break;
default:
qp->flush_code = FLUSH_FATAL_ERR;
break;
diff --git a/drivers/infiniband/hw/irdma/user.h b/drivers/infiniband/hw/irdma/user.h
index ff705f323233..267102d1049d 100644
--- a/drivers/infiniband/hw/irdma/user.h
+++ b/drivers/infiniband/hw/irdma/user.h
@@ -102,6 +102,7 @@ enum irdma_flush_opcode {
FLUSH_REM_OP_ERR,
FLUSH_LOC_LEN_ERR,
FLUSH_FATAL_ERR,
+ FLUSH_RETRY_EXC_ERR,
};
enum irdma_cmpl_status {
diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c
index 6c3d28f744cb..3960c872ff76 100644
--- a/drivers/infiniband/hw/irdma/verbs.c
+++ b/drivers/infiniband/hw/irdma/verbs.c
@@ -3358,6 +3358,8 @@ static enum ib_wc_status irdma_flush_err_to_ib_wc_status(enum irdma_flush_opcode
return IB_WC_LOC_LEN_ERR;
case FLUSH_GENERAL_ERR:
return IB_WC_WR_FLUSH_ERR;
+ case FLUSH_RETRY_EXC_ERR:
+ return IB_WC_RETRY_EXC_ERR;
case FLUSH_FATAL_ERR:
default:
return IB_WC_FATAL_ERR;
