Commit 6684b91d authored by Michael Chan's avatar Michael Chan Committed by Paolo Abeni
Browse files

bnxt_en: Implement ethtool .get_tunable() for ETHTOOL_PFC_PREVENTION_TOUT 



Return the current PFC watchdog timeout value if it is supported.

Reviewed-by: default avatarAndy Gospodarek <andrew.gospodarek@broadcom.com>
Reviewed-by: default avatarSomnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: default avatarMichael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250917040839.1924698-10-michael.chan@broadcom.com


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent 7ef55292

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

+18 −0
Original line number Diff line number Diff line
@@ -14748,6 +14748,23 @@ static bool bnxt_fw_pre_resv_vnics(struct bnxt *bp) 
	return false;

}



static void bnxt_hwrm_pfcwd_qcaps(struct bnxt *bp)

{

	struct hwrm_queue_pfcwd_timeout_qcaps_output *resp;

	struct hwrm_queue_pfcwd_timeout_qcaps_input *req;

	int rc;



	bp->max_pfcwd_tmo_ms = 0;

	rc = hwrm_req_init(bp, req, HWRM_QUEUE_PFCWD_TIMEOUT_QCAPS);

	if (rc)

		return;

	resp = hwrm_req_hold(bp, req);

	rc = hwrm_req_send_silent(bp, req);

	if (!rc)

		bp->max_pfcwd_tmo_ms = le16_to_cpu(resp->max_pfcwd_timeout);

	hwrm_req_drop(bp, req);

}



static int bnxt_fw_init_one_p1(struct bnxt *bp)

{

	int rc;
@@ -14825,6 +14842,7 @@ static int bnxt_fw_init_one_p2(struct bnxt *bp) 
	if (bnxt_fw_pre_resv_vnics(bp))

		bp->fw_cap |= BNXT_FW_CAP_PRE_RESV_VNICS;



	bnxt_hwrm_pfcwd_qcaps(bp);

	bnxt_hwrm_func_qcfg(bp);

	bnxt_hwrm_vnic_qcaps(bp);

	bnxt_hwrm_port_led_qcaps(bp);

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

+2 −0
Original line number Diff line number Diff line
@@ -2426,6 +2426,8 @@ struct bnxt { 
	u8			max_q;

	u8			num_tc;



	u16			max_pfcwd_tmo_ms;



	u8			tph_mode;



	unsigned int		current_interval;

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

+21 −0
Original line number Diff line number Diff line
@@ -4399,6 +4399,23 @@ static int bnxt_get_eee(struct net_device *dev, struct ethtool_keee *edata) 
	return 0;

}



static int bnxt_hwrm_pfcwd_qcfg(struct bnxt *bp, u16 *val)

{

	struct hwrm_queue_pfcwd_timeout_qcfg_output *resp;

	struct hwrm_queue_pfcwd_timeout_qcfg_input *req;

	int rc;



	rc = hwrm_req_init(bp, req, HWRM_QUEUE_PFCWD_TIMEOUT_QCFG);

	if (rc)

		return rc;

	resp = hwrm_req_hold(bp, req);

	rc = hwrm_req_send(bp, req);

	if (!rc)

		*val = le16_to_cpu(resp->pfcwd_timeout_value);

	hwrm_req_drop(bp, req);

	return rc;

}



static int bnxt_set_tunable(struct net_device *dev,

			    const struct ethtool_tunable *tuna,

			    const void *data)
@@ -4431,6 +4448,10 @@ static int bnxt_get_tunable(struct net_device *dev, 
	case ETHTOOL_RX_COPYBREAK:

		*(u32 *)data = bp->rx_copybreak;

		break;

	case ETHTOOL_PFC_PREVENTION_TOUT:

		if (!bp->max_pfcwd_tmo_ms)

			return -EOPNOTSUPP;

		return bnxt_hwrm_pfcwd_qcfg(bp, data);

	default:

		return -EOPNOTSUPP;

	}

include/linux/bnxt/hsi.h

+40 −0
Original line number Diff line number Diff line
@@ -6751,6 +6751,46 @@ struct hwrm_queue_dscp2pri_cfg_output { 
	u8	valid;

};



/* hwrm_queue_pfcwd_timeout_qcaps_input (size:128b/16B) */

struct hwrm_queue_pfcwd_timeout_qcaps_input {

	__le16	req_type;

	__le16	cmpl_ring;

	__le16	seq_id;

	__le16	target_id;

	__le64	resp_addr;

};



/* hwrm_queue_pfcwd_timeout_qcaps_output (size:128b/16B) */

struct hwrm_queue_pfcwd_timeout_qcaps_output {

	__le16	error_code;

	__le16	req_type;

	__le16	seq_id;

	__le16	resp_len;

	__le16	max_pfcwd_timeout;

	u8	unused_0[5];

	u8	valid;

};



/* hwrm_queue_pfcwd_timeout_qcfg_input (size:128b/16B) */

struct hwrm_queue_pfcwd_timeout_qcfg_input {

	__le16	req_type;

	__le16	cmpl_ring;

	__le16	seq_id;

	__le16	target_id;

	__le64	resp_addr;

};



/* hwrm_queue_pfcwd_timeout_qcfg_output (size:128b/16B) */

struct hwrm_queue_pfcwd_timeout_qcfg_output {

	__le16	error_code;

	__le16	req_type;

	__le16	seq_id;

	__le16	resp_len;

	__le16	pfcwd_timeout_value;

	u8	unused_0[5];

	u8	valid;

};



/* hwrm_vnic_alloc_input (size:192b/24B) */

struct hwrm_vnic_alloc_input {

	__le16	req_type;