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Commit 58d4a671 authored by Selvin Xavier's avatar Selvin Xavier Committed by Doug Ledford
Browse files

RDMA/bnxt_re: Report supported value to IB stack in query_device 



- Report supported value for max_mr_size to IB stack in query_device.
   Also, check and log if MR size requested by application in
   reg_user_mr() is greater than value currently supported by driver.
 - Report only 4K page size support for now
 - Fix Max_QP value returned by ibv_devinfo -vv.
   In case of PF, FW reserves 129 QPs for creating QP1s of VFs
   and PF. So the max_qp value reported by FW for PF doesn'tt include
   the QP1. Fixing this issue by adding 1 with the value reported
   by FW.

Signed-off-by: default avatarSelvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 4a62c5e9

drivers/infiniband/hw/bnxt_re/bnxt_re.h

+2 −0
Original line number Diff line number Diff line
@@ -51,6 +51,8 @@ 
#define BNXT_RE_PAGE_SIZE_8M		BIT(23)

#define BNXT_RE_PAGE_SIZE_1G		BIT(30)



#define BNXT_RE_MAX_MR_SIZE		BIT(30)



#define BNXT_RE_MAX_QPC_COUNT		(64 * 1024)

#define BNXT_RE_MAX_MRW_COUNT		(64 * 1024)

#define BNXT_RE_MAX_SRQC_COUNT		(64 * 1024)

drivers/infiniband/hw/bnxt_re/ib_verbs.c

+8 −4
Original line number Diff line number Diff line
@@ -145,10 +145,8 @@ int bnxt_re_query_device(struct ib_device *ibdev, 
	ib_attr->fw_ver = (u64)(unsigned long)(dev_attr->fw_ver);

	bnxt_qplib_get_guid(rdev->netdev->dev_addr,

			    (u8 *)&ib_attr->sys_image_guid);

	ib_attr->max_mr_size = ~0ull;

	ib_attr->page_size_cap = BNXT_RE_PAGE_SIZE_4K | BNXT_RE_PAGE_SIZE_8K |

				 BNXT_RE_PAGE_SIZE_64K | BNXT_RE_PAGE_SIZE_2M |

				 BNXT_RE_PAGE_SIZE_8M | BNXT_RE_PAGE_SIZE_1G;

	ib_attr->max_mr_size = BNXT_RE_MAX_MR_SIZE;

	ib_attr->page_size_cap = BNXT_RE_PAGE_SIZE_4K;



	ib_attr->vendor_id = rdev->en_dev->pdev->vendor;

	ib_attr->vendor_part_id = rdev->en_dev->pdev->device;
@@ -3229,6 +3227,12 @@ struct ib_mr *bnxt_re_reg_user_mr(struct ib_pd *ib_pd, u64 start, u64 length, 
	struct scatterlist *sg;

	int entry;



	if (length > BNXT_RE_MAX_MR_SIZE) {

		dev_err(rdev_to_dev(rdev), "MR Size: %lld > Max supported:%ld\n",

			length, BNXT_RE_MAX_MR_SIZE);

		return ERR_PTR(-ENOMEM);

	}



	mr = kzalloc(sizeof(*mr), GFP_KERNEL);

	if (!mr)

		return ERR_PTR(-ENOMEM);

drivers/infiniband/hw/bnxt_re/qplib_sp.c

+2 −0
Original line number Diff line number Diff line
@@ -81,6 +81,8 @@ int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw, 


	/* Extract the context from the side buffer */

	attr->max_qp = le32_to_cpu(sb->max_qp);

	/* max_qp value reported by FW for PF doesn't include the QP1 for PF */

	attr->max_qp += 1;

	attr->max_qp_rd_atom =

		sb->max_qp_rd_atom > BNXT_QPLIB_MAX_OUT_RD_ATOM ?

		BNXT_QPLIB_MAX_OUT_RD_ATOM : sb->max_qp_rd_atom;