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<abhishek.mohapatra@broadcom.com>
Reviewed-by: Chandramohan Akula <chandramohan.akula@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.c b/drivers/infiniband/hw/bnxt_re/qplib_sp.c
index 4f75e7e5bcf72fb5e7684c85d2331a52e631bebc..32c1cc79bd6802a3f8c4f8781e1180789a4648a1 100644 (file)
--- 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 acd9c14a31c4ba9966ecf263857428fa6a393b0a..ecf3f45fea74febb20e449fad47de39fe775b8c3 100644 (file)
--- 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;