This is a note to let you know that I've just added the patch titled
RDMA/bnxt_re: Disable use of reserved wqes
to the 6.6-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-bnxt_re-disable-use-of-reserved-wqes.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 5cf48f928edb635d870f6efdd5d5f3e55ec53d0b
Author: Kalesh AP <kalesh-anakkur.purayil@xxxxxxxxxxxx>
Date: Tue Dec 17 15:56:46 2024 +0530
RDMA/bnxt_re: Disable use of reserved wqes
[ Upstream commit d5a38bf2f35979537c526acbc56bc435ed40685f ]
Disabling the reserved wqes logic for Gen P5/P7 devices
because this workaround is required only for legacy devices.
Fixes: ecb53febfcad ("RDMA/bnxt_en: Enable RDMA driver support for 57500 chip")
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@xxxxxxxxxxxx>
Signed-off-by: Selvin Xavier <selvin.xavier@xxxxxxxxxxxx>
Link: https://patch.msgid.link/20241217102649.1377704-3-kalesh-anakkur.purayil@xxxxxxxxxxxx
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.c b/drivers/infiniband/hw/bnxt_re/qplib_sp.c
index a46df2a5ab33..577a6eaca4ce 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_sp.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.c
@@ -130,11 +130,13 @@ int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw,
sb->max_qp_init_rd_atom > BNXT_QPLIB_MAX_OUT_RD_ATOM ?
BNXT_QPLIB_MAX_OUT_RD_ATOM : sb->max_qp_init_rd_atom;
attr->max_qp_wqes = le16_to_cpu(sb->max_qp_wr) - 1;
- /*
- * 128 WQEs needs to be reserved for the HW (8916). Prevent
- * reporting the max number
- */
- attr->max_qp_wqes -= BNXT_QPLIB_RESERVED_QP_WRS + 1;
+ if (!bnxt_qplib_is_chip_gen_p5_p7(rcfw->res->cctx)) {
+ /*
+ * 128 WQEs needs to be reserved for the HW (8916). Prevent
+ * reporting the max number on legacy devices
+ */
+ attr->max_qp_wqes -= BNXT_QPLIB_RESERVED_QP_WRS + 1;
+ }
attr->max_qp_sges = cctx->modes.wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE ?
min_t(u32, sb->max_sge_var_wqe, BNXT_VAR_MAX_SGE) : 6;
