Commit d5a38bf2 authored by Kalesh AP's avatar Kalesh AP Committed by Leon Romanovsky
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RDMA/bnxt_re: Disable use of reserved wqes 



Disabling the reserved wqes logic for Gen P5/P7 devices
because this workaround is required only for legacy devices.

Fixes: ecb53feb ("RDMA/bnxt_en: Enable RDMA driver support for 57500 chip")
Signed-off-by: default avatarKalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: default avatarSelvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/20241217102649.1377704-3-kalesh-anakkur.purayil@broadcom.com


Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
parent 40be3230

drivers/infiniband/hw/bnxt_re/qplib_sp.c

+7 −5
Original line number Diff line number Diff line
@@ -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;

	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

		 * 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;