drivers/net/ethernet/mellanox/mlx4/en_netdev.c

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/mellanox/mlx4/en_netdev.c

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/mellanox/mlx4/en_netdev.c
Extension
.c
Size
98421 bytes
Lines
3589
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: operation-table or driver-model contract
Status
pattern 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

static const struct net_device_ops mlx4_netdev_ops = {
	.ndo_open		= mlx4_en_open,
	.ndo_stop		= mlx4_en_close,
	.ndo_start_xmit		= mlx4_en_xmit,
	.ndo_select_queue	= mlx4_en_select_queue,
	.ndo_get_stats64	= mlx4_en_get_stats64,
	.ndo_set_rx_mode	= mlx4_en_set_rx_mode,
	.ndo_set_mac_address	= mlx4_en_set_mac,
	.ndo_validate_addr	= eth_validate_addr,
	.ndo_change_mtu		= mlx4_en_change_mtu,
	.ndo_tx_timeout		= mlx4_en_tx_timeout,
	.ndo_vlan_rx_add_vid	= mlx4_en_vlan_rx_add_vid,
	.ndo_vlan_rx_kill_vid	= mlx4_en_vlan_rx_kill_vid,
	.ndo_set_features	= mlx4_en_set_features,
	.ndo_fix_features	= mlx4_en_fix_features,
	.ndo_setup_tc		= __mlx4_en_setup_tc,
#ifdef CONFIG_RFS_ACCEL
	.ndo_rx_flow_steer	= mlx4_en_filter_rfs,
#endif
	.ndo_get_phys_port_id	= mlx4_en_get_phys_port_id,
	.ndo_features_check	= mlx4_en_features_check,
	.ndo_set_tx_maxrate	= mlx4_en_set_tx_maxrate,
	.ndo_bpf		= mlx4_xdp,
	.ndo_hwtstamp_get	= mlx4_en_hwtstamp_get,
	.ndo_hwtstamp_set	= mlx4_en_hwtstamp_set,
};

static const struct net_device_ops mlx4_netdev_ops_master = {
	.ndo_open		= mlx4_en_open,
	.ndo_stop		= mlx4_en_close,
	.ndo_start_xmit		= mlx4_en_xmit,
	.ndo_select_queue	= mlx4_en_select_queue,
	.ndo_get_stats64	= mlx4_en_get_stats64,
	.ndo_set_rx_mode	= mlx4_en_set_rx_mode,
	.ndo_set_mac_address	= mlx4_en_set_mac,
	.ndo_validate_addr	= eth_validate_addr,
	.ndo_change_mtu		= mlx4_en_change_mtu,
	.ndo_tx_timeout		= mlx4_en_tx_timeout,
	.ndo_vlan_rx_add_vid	= mlx4_en_vlan_rx_add_vid,
	.ndo_vlan_rx_kill_vid	= mlx4_en_vlan_rx_kill_vid,
	.ndo_set_vf_mac		= mlx4_en_set_vf_mac,
	.ndo_set_vf_vlan	= mlx4_en_set_vf_vlan,
	.ndo_set_vf_rate	= mlx4_en_set_vf_rate,
	.ndo_set_vf_spoofchk	= mlx4_en_set_vf_spoofchk,
	.ndo_set_vf_link_state	= mlx4_en_set_vf_link_state,
	.ndo_get_vf_stats       = mlx4_en_get_vf_stats,
	.ndo_get_vf_config	= mlx4_en_get_vf_config,
	.ndo_set_features	= mlx4_en_set_features,
	.ndo_fix_features	= mlx4_en_fix_features,
	.ndo_setup_tc		= __mlx4_en_setup_tc,
#ifdef CONFIG_RFS_ACCEL
	.ndo_rx_flow_steer	= mlx4_en_filter_rfs,
#endif
	.ndo_get_phys_port_id	= mlx4_en_get_phys_port_id,
	.ndo_features_check	= mlx4_en_features_check,
	.ndo_set_tx_maxrate	= mlx4_en_set_tx_maxrate,
	.ndo_bpf		= mlx4_xdp,
};

static const struct xdp_metadata_ops mlx4_xdp_metadata_ops = {
	.xmo_rx_timestamp		= mlx4_en_xdp_rx_timestamp,
	.xmo_rx_hash			= mlx4_en_xdp_rx_hash,
};

int mlx4_en_netdev_event(struct notifier_block *this,
			 unsigned long event, void *ptr)
{
	struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
	u8 port = 0;
	struct mlx4_en_dev *mdev;
	struct mlx4_dev *dev;
	int i, num_eth_ports = 0;
	bool do_bond = true;
	u8 v2p_port1 = 0;
	u8 v2p_port2 = 0;

	if (!net_eq(dev_net(ndev), &init_net))
		return NOTIFY_DONE;

	mdev = container_of(this, struct mlx4_en_dev, netdev_nb);
	dev = mdev->dev;

	/* Go into this mode only when two network devices set on two ports
	 * of the same mlx4 device are slaves of the same bonding master
	 */
	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
		++num_eth_ports;
		if (!port && (mdev->pndev[i] == ndev))
			port = i;
		mdev->upper[i] = mdev->pndev[i] ?

Annotation

Implementation Notes