drivers/net/ethernet/ibm/ehea/ehea_ethtool.c

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/ibm/ehea/ehea_ethtool.c

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/ibm/ehea/ehea_ethtool.c
Extension
.c
Size
6512 bytes
Lines
278
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

switch (port->port_speed) {
		case EHEA_SPEED_10M:
			speed = SPEED_10;
			break;
		case EHEA_SPEED_100M:
			speed = SPEED_100;
			break;
		case EHEA_SPEED_1G:
			speed = SPEED_1000;
			break;
		case EHEA_SPEED_10G:
			speed = SPEED_10000;
			break;
		default:
			speed = -1;
			break; /* BUG */
		}
		cmd->base.duplex = port->full_duplex == 1 ?
						     DUPLEX_FULL : DUPLEX_HALF;
	} else {
		speed = SPEED_UNKNOWN;
		cmd->base.duplex = DUPLEX_UNKNOWN;
	}
	cmd->base.speed = speed;

	if (cmd->base.speed == SPEED_10000) {
		supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
		advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE);
		cmd->base.port = PORT_FIBRE;
	} else {
		supported = (SUPPORTED_1000baseT_Full | SUPPORTED_100baseT_Full
			       | SUPPORTED_100baseT_Half | SUPPORTED_10baseT_Full
			       | SUPPORTED_10baseT_Half | SUPPORTED_Autoneg
			       | SUPPORTED_TP);
		advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg
				 | ADVERTISED_TP);
		cmd->base.port = PORT_TP;
	}

	cmd->base.autoneg = port->autoneg == 1 ?
		AUTONEG_ENABLE : AUTONEG_DISABLE;

	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
						supported);
	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
						advertising);

	return 0;
}

static int ehea_set_link_ksettings(struct net_device *dev,
				   const struct ethtool_link_ksettings *cmd)
{
	struct ehea_port *port = netdev_priv(dev);
	int ret = 0;
	u32 sp;

	if (cmd->base.autoneg == AUTONEG_ENABLE) {
		sp = EHEA_SPEED_AUTONEG;
		goto doit;
	}

	switch (cmd->base.speed) {
	case SPEED_10:
		if (cmd->base.duplex == DUPLEX_FULL)
			sp = H_SPEED_10M_F;
		else
			sp = H_SPEED_10M_H;
		break;

	case SPEED_100:
		if (cmd->base.duplex == DUPLEX_FULL)
			sp = H_SPEED_100M_F;
		else
			sp = H_SPEED_100M_H;
		break;

	case SPEED_1000:
		if (cmd->base.duplex == DUPLEX_FULL)
			sp = H_SPEED_1G_F;
		else
			ret = -EINVAL;
		break;

	case SPEED_10000:
		if (cmd->base.duplex == DUPLEX_FULL)
			sp = H_SPEED_10G_F;
		else
			ret = -EINVAL;
		break;

Annotation

Implementation Notes