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RDMA/bnxt_re: Fix MSN table size for variable wqe mode

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[ Upstream commit bb839f3ace ]

For variable size wqe mode, the MSN table size should be
half the size of the SQ depth. Fixing this to avoid wrap
around problems in the retransmission path.

Fixes: de1d364c38 ("RDMA/bnxt_re: Add support for Variable WQE in Genp7 adapters")
Reviewed-by: Kashyap Desai <kashyap.desai@broadcom.com>
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/20241217102649.1377704-5-kalesh-anakkur.purayil@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Damodharam Ammepalli
2024-12-17 15:56:48 +05:30
committed by Greg Kroah-Hartman
parent 2c73cd31f9
commit 003e82749a
1 changed files with 6 additions and 1 deletions
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7
drivers/infiniband/hw/bnxt_re/qplib_fp.c
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@@ -1032,7 +1032,12 @@ int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
: 0;
/* Update msn tbl size */
if (qp->is_host_msn_tbl && psn_sz) {
hwq_attr.aux_depth = roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
if (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC)
hwq_attr.aux_depth =
roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
else
hwq_attr.aux_depth =
roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, qp->wqe_mode)) / 2;
qp->msn_tbl_sz = hwq_attr.aux_depth;
qp->msn = 0;
}