6.6-stable review patch. If anyone has any objections, please let me know.
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From: Damodharam Ammepalli damodharam.ammepalli@broadcom.com
[ Upstream commit bb839f3ace0fee532a0487b692cc4d868fccb7cf ]
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: de1d364c3815 ("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@bro... Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/hw/bnxt_re/qplib_fp.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.c b/drivers/infiniband/hw/bnxt_re/qplib_fp.c index 2f85245d1285..1355061d698d 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_fp.c +++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.c @@ -1013,7 +1013,12 @@ 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; }