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Commit 72b34f04 authored by Michael Chan's avatar Michael Chan Committed by David S. Miller
Browse files

bnxt_en: Add get_eee() and set_eee() ethtool support. 



Allow users to get|set EEE parameters.

v2: Added comment for preserving the tx_lpi_timer value in get_eee.

Signed-off-by: default avatarMichael Chan <michael.chan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 939f7f0c

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

+76 −0
Original line number Diff line number Diff line
@@ -1379,6 +1379,80 @@ static int bnxt_set_eeprom(struct net_device *dev, 
				eeprom->len);

}



static int bnxt_set_eee(struct net_device *dev, struct ethtool_eee *edata)

{

	struct bnxt *bp = netdev_priv(dev);

	struct ethtool_eee *eee = &bp->eee;

	struct bnxt_link_info *link_info = &bp->link_info;

	u32 advertising =

		 _bnxt_fw_to_ethtool_adv_spds(link_info->advertising, 0);

	int rc = 0;



	if (BNXT_VF(bp))

		return 0;



	if (!(bp->flags & BNXT_FLAG_EEE_CAP))

		return -EOPNOTSUPP;



	if (!edata->eee_enabled)

		goto eee_ok;



	if (!(link_info->autoneg & BNXT_AUTONEG_SPEED)) {

		netdev_warn(dev, "EEE requires autoneg\n");

		return -EINVAL;

	}

	if (edata->tx_lpi_enabled) {

		if (bp->lpi_tmr_hi && (edata->tx_lpi_timer > bp->lpi_tmr_hi ||

				       edata->tx_lpi_timer < bp->lpi_tmr_lo)) {

			netdev_warn(dev, "Valid LPI timer range is %d and %d microsecs\n",

				    bp->lpi_tmr_lo, bp->lpi_tmr_hi);

			return -EINVAL;

		} else if (!bp->lpi_tmr_hi) {

			edata->tx_lpi_timer = eee->tx_lpi_timer;

		}

	}

	if (!edata->advertised) {

		edata->advertised = advertising & eee->supported;

	} else if (edata->advertised & ~advertising) {

		netdev_warn(dev, "EEE advertised %x must be a subset of autoneg advertised speeds %x\n",

			    edata->advertised, advertising);

		return -EINVAL;

	}



	eee->advertised = edata->advertised;

	eee->tx_lpi_enabled = edata->tx_lpi_enabled;

	eee->tx_lpi_timer = edata->tx_lpi_timer;

eee_ok:

	eee->eee_enabled = edata->eee_enabled;



	if (netif_running(dev))

		rc = bnxt_hwrm_set_link_setting(bp, false, true);



	return rc;

}



static int bnxt_get_eee(struct net_device *dev, struct ethtool_eee *edata)

{

	struct bnxt *bp = netdev_priv(dev);



	if (!(bp->flags & BNXT_FLAG_EEE_CAP))

		return -EOPNOTSUPP;



	*edata = bp->eee;

	if (!bp->eee.eee_enabled) {

		/* Preserve tx_lpi_timer so that the last value will be used

		 * by default when it is re-enabled.

		 */

		edata->advertised = 0;

		edata->tx_lpi_enabled = 0;

	}



	if (!bp->eee.eee_active)

		edata->lp_advertised = 0;



	return 0;

}



const struct ethtool_ops bnxt_ethtool_ops = {

	.get_settings		= bnxt_get_settings,

	.set_settings		= bnxt_set_settings,
@@ -1407,4 +1481,6 @@ const struct ethtool_ops bnxt_ethtool_ops = { 
	.get_eeprom             = bnxt_get_eeprom,

	.set_eeprom		= bnxt_set_eeprom,

	.get_link		= bnxt_get_link,

	.get_eee		= bnxt_get_eee,

	.set_eee		= bnxt_set_eee,

};