Commit 34f8c58f authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'bnxt_en-devlink-param-updates' 



Vasundhara Volam says:

====================
bnxt_en: devlink param updates

This patchset adds support for 3 generic and 1 driver-specific devlink
parameters. Add documentation for these configuration parameters.

Also, this patchset adds support to return proper error code if
HWRM_NVM_GET/SET_VARIABLE commands return error code
HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED.

v3->v4:
-Remove extra definition of NVM_OFF_HW_TC_OFFLOAD from bnxt_devlink.h
-Remove type information for generic parameters from
devlink-params-bnxt.txt

v2->v3:
-Remove description of generic parameters from devlink-params-bnxt.txt

v1->v2:
-Remove hw_tc_offload parameter.
-Update all patches with Cc of MAINTAINERS.
-Add more description in commit message for device specific parameter.
-Add a new Documentation/networking/devlink-params.txt with some
generic devlink parameters information.
-Add a new Documentation/networking/devlink-params-bnxt.txt with devlink
parameters information that are supported by bnxt_en driver.
====================

Acked-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents 8fa74e3c 53e233ea

Documentation/networking/devlink-params-bnxt.txt

0 → 100644
+18 −0
Original line number Diff line number Diff line 
enable_sriov		[DEVICE, GENERIC]

			Configuration mode: Permanent



ignore_ari		[DEVICE, GENERIC]

			Configuration mode: Permanent



msix_vec_per_pf_max	[DEVICE, GENERIC]

			Configuration mode: Permanent



msix_vec_per_pf_min	[DEVICE, GENERIC]

			Configuration mode: Permanent



gre_ver_check		[DEVICE, DRIVER-SPECIFIC]

			Generic Routing Encapsulation (GRE) version check will

			be enabled in the device. If disabled, device skips

			version checking for incoming packets.

			Type: Boolean

			Configuration mode: Permanent

Documentation/networking/devlink-params.txt

0 → 100644
+42 −0
Original line number Diff line number Diff line 
Devlink configuration parameters

================================

Following is the list of configuration parameters via devlink interface.

Each parameter can be generic or driver specific and are device level

parameters.



Note that the driver-specific files should contain the generic params

they support to, with supported config modes.



Each parameter can be set in different configuration modes:

	runtime		- set while driver is running, no reset required.

	driverinit	- applied while driver initializes, requires restart

			driver by devlink reload command.

	permanent	- written to device's non-volatile memory, hard reset

			required.



Following is the list of parameters:

====================================

enable_sriov		[DEVICE, GENERIC]

			Enable Single Root I/O Virtualisation (SRIOV) in

			the device.

			Type: Boolean



ignore_ari		[DEVICE, GENERIC]

			Ignore Alternative Routing-ID Interpretation (ARI)

			capability. If enabled, adapter will ignore ARI

			capability even when platforms has the support

			enabled and creates same number of partitions when

			platform does not support ARI.

			Type: Boolean



msix_vec_per_pf_max	[DEVICE, GENERIC]

			Provides the maximum number of MSIX interrupts that

			a device can create. Value is same across all

			physical functions (PFs) in the device.

			Type: u32



msix_vec_per_pf_min	[DEVICE, GENERIC]

			Provides the minimum number of MSIX interrupts required

			for the device initialization. Value is same across all

			physical functions (PFs) in the device.

			Type: u32

drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c

+82 −4
Original line number Diff line number Diff line
@@ -21,9 +21,22 @@ static const struct devlink_ops bnxt_dl_ops = { 
#endif /* CONFIG_BNXT_SRIOV */

};



enum bnxt_dl_param_id {

	BNXT_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,

	BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK,

};



static const struct bnxt_dl_nvm_param nvm_params[] = {

	{DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV, NVM_OFF_ENABLE_SRIOV,

	 BNXT_NVM_SHARED_CFG, 1},

	{DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI, NVM_OFF_IGNORE_ARI,

	 BNXT_NVM_SHARED_CFG, 1},

	{DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,

	 NVM_OFF_MSIX_VEC_PER_PF_MAX, BNXT_NVM_SHARED_CFG, 10},

	{DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,

	 NVM_OFF_MSIX_VEC_PER_PF_MIN, BNXT_NVM_SHARED_CFG, 7},

	{BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK, NVM_OFF_DIS_GRE_VER_CHECK,

	 BNXT_NVM_SHARED_CFG, 1},

};



static int bnxt_hwrm_nvm_req(struct bnxt *bp, u32 param_id, void *msg,
@@ -55,8 +68,22 @@ static int bnxt_hwrm_nvm_req(struct bnxt *bp, u32 param_id, void *msg, 
		idx = bp->pf.fw_fid - BNXT_FIRST_PF_FID;



	bytesize = roundup(nvm_param.num_bits, BITS_PER_BYTE) / BITS_PER_BYTE;

	switch (bytesize) {

	case 1:

		if (nvm_param.num_bits == 1)

			buf = &val->vbool;

		else

			buf = &val->vu8;

		break;

	case 2:

		buf = &val->vu16;

		break;

	case 4:

		buf = &val->vu32;

		break;

	default:

		return -EFAULT;

	}



	data_addr = dma_zalloc_coherent(&bp->pdev->dev, bytesize,

					&data_dma_addr, GFP_KERNEL);
@@ -78,8 +105,12 @@ static int bnxt_hwrm_nvm_req(struct bnxt *bp, u32 param_id, void *msg, 
		memcpy(buf, data_addr, bytesize);



	dma_free_coherent(&bp->pdev->dev, bytesize, data_addr, data_dma_addr);

	if (rc)

	if (rc == HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED) {

		netdev_err(bp->dev, "PF does not have admin privileges to modify NVM config\n");

		return -EACCES;

	} else if (rc) {

		return -EIO;

	}

	return 0;

}
@@ -88,9 +119,15 @@ static int bnxt_dl_nvm_param_get(struct devlink *dl, u32 id, 
{

	struct hwrm_nvm_get_variable_input req = {0};

	struct bnxt *bp = bnxt_get_bp_from_dl(dl);

	int rc;



	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_GET_VARIABLE, -1, -1);

	return bnxt_hwrm_nvm_req(bp, id, &req, sizeof(req), &ctx->val);

	rc = bnxt_hwrm_nvm_req(bp, id, &req, sizeof(req), &ctx->val);

	if (!rc)

		if (id == BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK)

			ctx->val.vbool = !ctx->val.vbool;



	return rc;

}



static int bnxt_dl_nvm_param_set(struct devlink *dl, u32 id,
@@ -100,14 +137,55 @@ static int bnxt_dl_nvm_param_set(struct devlink *dl, u32 id, 
	struct bnxt *bp = bnxt_get_bp_from_dl(dl);



	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_SET_VARIABLE, -1, -1);



	if (id == BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK)

		ctx->val.vbool = !ctx->val.vbool;



	return bnxt_hwrm_nvm_req(bp, id, &req, sizeof(req), &ctx->val);

}



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

				 union devlink_param_value val,

				 struct netlink_ext_ack *extack)

{

	int max_val;



	if (id == DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX)

		max_val = BNXT_MSIX_VEC_MAX;



	if (id == DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN)

		max_val = BNXT_MSIX_VEC_MIN_MAX;



	if (val.vu32 < 0 || val.vu32 > max_val) {

		NL_SET_ERR_MSG_MOD(extack, "MSIX value is exceeding the range");

		return -EINVAL;

	}



	return 0;

}



static const struct devlink_param bnxt_dl_params[] = {

	DEVLINK_PARAM_GENERIC(ENABLE_SRIOV,

			      BIT(DEVLINK_PARAM_CMODE_PERMANENT),

			      bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,

			      NULL),

	DEVLINK_PARAM_GENERIC(IGNORE_ARI,

			      BIT(DEVLINK_PARAM_CMODE_PERMANENT),

			      bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,

			      NULL),

	DEVLINK_PARAM_GENERIC(MSIX_VEC_PER_PF_MAX,

			      BIT(DEVLINK_PARAM_CMODE_PERMANENT),

			      bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,

			      bnxt_dl_msix_validate),

	DEVLINK_PARAM_GENERIC(MSIX_VEC_PER_PF_MIN,

			      BIT(DEVLINK_PARAM_CMODE_PERMANENT),

			      bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,

			      bnxt_dl_msix_validate),

	DEVLINK_PARAM_DRIVER(BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK,

			     "gre_ver_check", DEVLINK_PARAM_TYPE_BOOL,

			     BIT(DEVLINK_PARAM_CMODE_PERMANENT),

			     bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,

			     NULL),

};



int bnxt_dl_register(struct bnxt *bp)

drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h

+7 −0
Original line number Diff line number Diff line
@@ -33,8 +33,15 @@ static inline void bnxt_link_bp_to_dl(struct bnxt *bp, struct devlink *dl) 
	}

}



#define NVM_OFF_MSIX_VEC_PER_PF_MAX	108

#define NVM_OFF_MSIX_VEC_PER_PF_MIN	114

#define NVM_OFF_IGNORE_ARI		164

#define NVM_OFF_DIS_GRE_VER_CHECK	171

#define NVM_OFF_ENABLE_SRIOV		401



#define BNXT_MSIX_VEC_MAX	1280

#define BNXT_MSIX_VEC_MIN_MAX	128



enum bnxt_nvm_dir_type {

	BNXT_NVM_SHARED_CFG = 40,

	BNXT_NVM_PORT_CFG,

include/net/devlink.h

+12 −0
Original line number Diff line number Diff line
@@ -362,6 +362,9 @@ enum devlink_param_generic_id { 
	DEVLINK_PARAM_GENERIC_ID_MAX_MACS,

	DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,

	DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,

	DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,

	DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,

	DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,



	/* add new param generic ids above here*/

	__DEVLINK_PARAM_GENERIC_ID_MAX,
@@ -380,6 +383,15 @@ enum devlink_param_generic_id { 
#define DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME "region_snapshot_enable"

#define DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE DEVLINK_PARAM_TYPE_BOOL



#define DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME "ignore_ari"

#define DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE DEVLINK_PARAM_TYPE_BOOL



#define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME "msix_vec_per_pf_max"

#define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE DEVLINK_PARAM_TYPE_U32



#define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME "msix_vec_per_pf_min"

#define DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE DEVLINK_PARAM_TYPE_U32



#define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate)	\

{									\

	.id = DEVLINK_PARAM_GENERIC_ID_##_id,				\

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