From: Abhishek Mohapatra Date: Tue, 8 Oct 2024 07:41:33 +0000 (-0700) Subject: RDMA/bnxt_re: Fix the max CQ WQEs for older adapters X-Git-Tag: v6.12-rc4~38^2~9 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ac6df53738b465053d38d491fff87bd7d37fdc07;p=thirdparty%2Fkernel%2Flinux.git RDMA/bnxt_re: Fix the max CQ WQEs for older adapters Older adapters doesn't support the MAX CQ WQEs reported by older FW. So restrict the value reported to 1M always for older adapters. Fixes: 1ac5a4047975 ("RDMA/bnxt_re: Add bnxt_re RoCE driver") Link: https://patch.msgid.link/r/1728373302-19530-2-git-send-email-selvin.xavier@broadcom.com Signed-off-by: Abhishek Mohapatra Reviewed-by: Chandramohan Akula Signed-off-by: Selvin Xavier Signed-off-by: Jason Gunthorpe --- diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.c b/drivers/infiniband/hw/bnxt_re/qplib_sp.c index 4f75e7e5bcf72..32c1cc79bd680 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_sp.c +++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.c @@ -140,6 +140,8 @@ int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw, min_t(u32, sb->max_sge_var_wqe, BNXT_VAR_MAX_SGE) : 6; attr->max_cq = le32_to_cpu(sb->max_cq); attr->max_cq_wqes = le32_to_cpu(sb->max_cqe); + if (!bnxt_qplib_is_chip_gen_p7(rcfw->res->cctx)) + attr->max_cq_wqes = min_t(u32, BNXT_QPLIB_MAX_CQ_WQES, attr->max_cq_wqes); attr->max_cq_sges = attr->max_qp_sges; attr->max_mr = le32_to_cpu(sb->max_mr); attr->max_mw = le32_to_cpu(sb->max_mw); diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.h b/drivers/infiniband/hw/bnxt_re/qplib_sp.h index acd9c14a31c4b..ecf3f45fea74f 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_sp.h +++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.h @@ -56,6 +56,7 @@ struct bnxt_qplib_dev_attr { u32 max_qp_wqes; u32 max_qp_sges; u32 max_cq; +#define BNXT_QPLIB_MAX_CQ_WQES 0xfffff u32 max_cq_wqes; u32 max_cq_sges; u32 max_mr;