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Commit 24e04879 authored by Michal Kalderon's avatar Michal Kalderon Committed by David S. Miller
Browse files

qed: Add qed devlink parameters table 



The table currently contains a single parameter for
configuring whether iWARP should be enabled on a 100g
device. Enabling iWARP on a 100g device impacts L2
performance and is therefore not enabled by default.

Signed-off-by: default avatarAriel Elior <ariel.elior@marvell.com>
Signed-off-by: default avatarMichal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8366d520

drivers/net/ethernet/qlogic/qed/qed.h

+3 −0
Original line number Diff line number Diff line
@@ -863,6 +863,9 @@ struct qed_dev { 
	u32 rdma_max_inline;

	u32 rdma_max_srq_sge;

	u16 tunn_feature_mask;



	struct devlink			*dl;

	bool				iwarp_cmt;

};



#define NUM_OF_VFS(dev)         (QED_IS_BB(dev) ? MAX_NUM_VFS_BB \

drivers/net/ethernet/qlogic/qed/qed_main.c

+110 −0
Original line number Diff line number Diff line
@@ -48,6 +48,7 @@ 
#include <linux/crc32.h>

#include <linux/qed/qed_if.h>

#include <linux/qed/qed_ll2_if.h>

#include <net/devlink.h>



#include "qed.h"

#include "qed_sriov.h"
@@ -342,6 +343,107 @@ static int qed_set_power_state(struct qed_dev *cdev, pci_power_t state) 
	return 0;

}



struct qed_devlink {

	struct qed_dev *cdev;

};



enum qed_devlink_param_id {

	QED_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,

	QED_DEVLINK_PARAM_ID_IWARP_CMT,

};



static int qed_dl_param_get(struct devlink *dl, u32 id,

			    struct devlink_param_gset_ctx *ctx)

{

	struct qed_devlink *qed_dl;

	struct qed_dev *cdev;



	qed_dl = devlink_priv(dl);

	cdev = qed_dl->cdev;

	ctx->val.vbool = cdev->iwarp_cmt;



	return 0;

}



static int qed_dl_param_set(struct devlink *dl, u32 id,

			    struct devlink_param_gset_ctx *ctx)

{

	struct qed_devlink *qed_dl;

	struct qed_dev *cdev;



	qed_dl = devlink_priv(dl);

	cdev = qed_dl->cdev;

	cdev->iwarp_cmt = ctx->val.vbool;



	return 0;

}



static const struct devlink_param qed_devlink_params[] = {

	DEVLINK_PARAM_DRIVER(QED_DEVLINK_PARAM_ID_IWARP_CMT,

			     "iwarp_cmt", DEVLINK_PARAM_TYPE_BOOL,

			     BIT(DEVLINK_PARAM_CMODE_RUNTIME),

			     qed_dl_param_get, qed_dl_param_set, NULL),

};



static const struct devlink_ops qed_dl_ops;



static int qed_devlink_register(struct qed_dev *cdev)

{

	union devlink_param_value value;

	struct qed_devlink *qed_dl;

	struct devlink *dl;

	int rc;



	dl = devlink_alloc(&qed_dl_ops, sizeof(*qed_dl));

	if (!dl)

		return -ENOMEM;



	qed_dl = devlink_priv(dl);



	cdev->dl = dl;

	qed_dl->cdev = cdev;



	rc = devlink_register(dl, &cdev->pdev->dev);

	if (rc)

		goto err_free;



	rc = devlink_params_register(dl, qed_devlink_params,

				     ARRAY_SIZE(qed_devlink_params));

	if (rc)

		goto err_unregister;



	value.vbool = false;

	devlink_param_driverinit_value_set(dl,

					   QED_DEVLINK_PARAM_ID_IWARP_CMT,

					   value);



	devlink_params_publish(dl);

	cdev->iwarp_cmt = false;



	return 0;



err_unregister:

	devlink_unregister(dl);



err_free:

	cdev->dl = NULL;

	devlink_free(dl);



	return rc;

}



static void qed_devlink_unregister(struct qed_dev *cdev)

{

	if (!cdev->dl)

		return;



	devlink_params_unregister(cdev->dl, qed_devlink_params,

				  ARRAY_SIZE(qed_devlink_params));



	devlink_unregister(cdev->dl);

	devlink_free(cdev->dl);

}



/* probing */

static struct qed_dev *qed_probe(struct pci_dev *pdev,

				 struct qed_probe_params *params)
@@ -370,6 +472,12 @@ static struct qed_dev *qed_probe(struct pci_dev *pdev, 
	}

	DP_INFO(cdev, "PCI init completed successfully\n");



	rc = qed_devlink_register(cdev);

	if (rc) {

		DP_INFO(cdev, "Failed to register devlink.\n");

		goto err2;

	}



	rc = qed_hw_prepare(cdev, QED_PCI_DEFAULT);

	if (rc) {

		DP_ERR(cdev, "hw prepare failed\n");
@@ -399,6 +507,8 @@ static void qed_remove(struct qed_dev *cdev) 


	qed_set_power_state(cdev, PCI_D3hot);



	qed_devlink_unregister(cdev);



	qed_free_cdev(cdev);

}