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Commit 7c698737 authored by Jakub Kicinski's avatar Jakub Kicinski Committed by David S. Miller
Browse files

nfp: add support for .set_link_ksettings() 



Support setting link speed and autonegotiation through
set_link_ksettings() ethtool op.  If the port is reconfigured
in incompatible way and reboot is required the netdev will get
unregistered and not come back until user reboots the system.

Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: default avatarSimon Horman <simon.horman@netronome.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5a560832

drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c

+46 −0
Original line number Diff line number Diff line
@@ -237,6 +237,51 @@ nfp_net_get_link_ksettings(struct net_device *netdev, 
	return 0;

}



static int

nfp_net_set_link_ksettings(struct net_device *netdev,

			   const struct ethtool_link_ksettings *cmd)

{

	struct nfp_net *nn = netdev_priv(netdev);

	struct nfp_nsp *nsp;

	int err;



	if (!nn->eth_port)

		return -EOPNOTSUPP;



	if (netif_running(netdev)) {

		nn_warn(nn, "Changing settings not allowed on an active interface. It may cause the port to be disabled until reboot.\n");

		return -EBUSY;

	}



	nsp = nfp_eth_config_start(nn->cpp, nn->eth_port->index);

	if (IS_ERR(nsp))

		return PTR_ERR(nsp);



	err = __nfp_eth_set_aneg(nsp, cmd->base.autoneg == AUTONEG_ENABLE ?

				 NFP_ANEG_AUTO : NFP_ANEG_DISABLED);

	if (err)

		goto err_bad_set;

	if (cmd->base.speed != SPEED_UNKNOWN) {

		u32 speed = cmd->base.speed / nn->eth_port->lanes;



		err = __nfp_eth_set_speed(nsp, speed);

		if (err)

			goto err_bad_set;

	}



	err = nfp_eth_config_commit_end(nsp);

	if (err > 0)

		return 0; /* no change */



	nfp_net_refresh_port_config(nn);



	return err;



err_bad_set:

	nfp_eth_config_cleanup_end(nsp);

	return err;

}



static void nfp_net_get_ringparam(struct net_device *netdev,

				  struct ethtool_ringparam *ring)

{
@@ -879,6 +924,7 @@ static const struct ethtool_ops nfp_net_ethtool_ops = { 
	.get_channels		= nfp_net_get_channels,

	.set_channels		= nfp_net_set_channels,

	.get_link_ksettings	= nfp_net_get_link_ksettings,

	.set_link_ksettings	= nfp_net_set_link_ksettings,

};



void nfp_net_set_ethtool_ops(struct net_device *netdev)