Commit 35e93561 authored by Dave Ertman's avatar Dave Ertman Committed by Jeff Kirsher
Browse files

ice: renegotiate link after FW DCB on 



When switching from SW DCB to FW DCB it is necessary
to renegotiate DCBx so that the FW agent can have up
to date information about the DCB settings of the link
partner.

Perform an autoneg restart on the link when activating
FW DCB.

Signed-off-by: default avatarDave Ertman <david.m.ertman@intel.com>
Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 1f454e06

drivers/net/ethernet/intel/ice/ice_ethtool.c

+29 −24
Original line number Diff line number Diff line
@@ -1131,6 +1131,33 @@ done: 
	return err;

}



/**

 * ice_nway_reset - restart autonegotiation

 * @netdev: network interface device structure

 */

static int ice_nway_reset(struct net_device *netdev)

{

	struct ice_netdev_priv *np = netdev_priv(netdev);

	struct ice_vsi *vsi = np->vsi;

	struct ice_port_info *pi;

	enum ice_status status;



	pi = vsi->port_info;

	/* If VSI state is up, then restart autoneg with link up */

	if (!test_bit(__ICE_DOWN, vsi->back->state))

		status = ice_aq_set_link_restart_an(pi, true, NULL);

	else

		status = ice_aq_set_link_restart_an(pi, false, NULL);



	if (status) {

		netdev_info(netdev, "link restart failed, err %d aq_err %d\n",

			    status, pi->hw->adminq.sq_last_status);

		return -EIO;

	}



	return 0;

}



/**

 * ice_get_priv_flags - report device private flags

 * @netdev: network interface device structure
@@ -1264,6 +1291,8 @@ static int ice_set_priv_flags(struct net_device *netdev, u32 flags) 
			status = ice_cfg_lldp_mib_change(&pf->hw, true);

			if (status)

				dev_dbg(dev, "Fail to enable MIB change events\n");



			ice_nway_reset(netdev);

		}

	}

	if (test_bit(ICE_FLAG_LEGACY_RX, change_flags)) {
@@ -2775,30 +2804,6 @@ done: 
	return err;

}



static int ice_nway_reset(struct net_device *netdev)

{

	/* restart autonegotiation */

	struct ice_netdev_priv *np = netdev_priv(netdev);

	struct ice_vsi *vsi = np->vsi;

	struct ice_port_info *pi;

	enum ice_status status;



	pi = vsi->port_info;

	/* If VSI state is up, then restart autoneg with link up */

	if (!test_bit(__ICE_DOWN, vsi->back->state))

		status = ice_aq_set_link_restart_an(pi, true, NULL);

	else

		status = ice_aq_set_link_restart_an(pi, false, NULL);



	if (status) {

		netdev_info(netdev, "link restart failed, err %d aq_err %d\n",

			    status, pi->hw->adminq.sq_last_status);

		return -EIO;

	}



	return 0;

}



/**

 * ice_get_pauseparam - Get Flow Control status

 * @netdev: network interface device structure

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