github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-03 03:53:37 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

RDMA/bnxt_re: Add send queue size check for variable wqe

Browse Source 
For the fixed WQE case, HW supports 0xFFFF WQEs.
For variable Size WQEs, HW treats this number as
the 16 bytes slots. The maximum supported WQEs
needs to be adjusted based on the number of slots.
Set a maximum WQE limit for variable WQE scenario.

Fixes: de1d364c38 ("RDMA/bnxt_re: Add support for Variable WQE in Genp7 adapters")
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Damodharam Ammepalli <damodharam.ammepalli@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/20241217102649.1377704-4-kalesh-anakkur.purayil@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Damodharam Ammepalli 2024-12-17 15:56:47 +05:30 committed by Leon Romanovsky
parent d5a38bf2f3
commit d13be54dc1
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/infiniband/hw/bnxt_re/qplib_sp.c
View File

@ -138,6 +138,10 @@ int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw,
attr->max_qp_wqes -= BNXT_QPLIB_RESERVED_QP_WRS + 1;
}
/* Adjust for max_qp_wqes for variable wqe */
if (cctx->modes.wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE)
attr->max_qp_wqes = BNXT_VAR_MAX_WQE - 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;
attr->max_cq = le32_to_cpu(sb->max_cq);