drivers/net/wireless/marvell/libertas/main.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/marvell/libertas/main.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/marvell/libertas/main.c
Extension
.c
Size
26439 bytes
Lines
1074
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 lbs_netdev_ops = {
	.ndo_open 		= lbs_dev_open,
	.ndo_stop		= lbs_eth_stop,
	.ndo_start_xmit		= lbs_hard_start_xmit,
	.ndo_set_mac_address	= lbs_set_mac_address,
	.ndo_set_rx_mode	= lbs_set_multicast_list,
	.ndo_validate_addr	= eth_validate_addr,
};

/**
 * lbs_add_card - adds the card. It will probe the
 * card, allocate the lbs_priv and initialize the device.
 *
 * @card:	A pointer to card
 * @dmdev:	A pointer to &struct device
 * returns:	A pointer to &struct lbs_private structure
 */
struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
{
	struct net_device *dev;
	struct wireless_dev *wdev;
	struct lbs_private *priv = NULL;
	int err;

	/* Allocate an Ethernet device and register it */
	wdev = lbs_cfg_alloc(dmdev);
	if (IS_ERR(wdev)) {
		err = PTR_ERR(wdev);
		pr_err("cfg80211 init failed\n");
		goto err_cfg;
	}

	wdev->iftype = NL80211_IFTYPE_STATION;
	priv = wdev_priv(wdev);
	priv->wdev = wdev;

	err = lbs_init_adapter(priv);
	if (err) {
		pr_err("failed to initialize adapter structure\n");
		goto err_wdev;
	}

	dev = alloc_netdev(0, "wlan%d", NET_NAME_UNKNOWN, ether_setup);
	if (!dev) {
		err = -ENOMEM;
		dev_err(dmdev, "no memory for network device instance\n");
		goto err_adapter;
	}

	dev->ieee80211_ptr = wdev;
	dev->ml_priv = priv;
	SET_NETDEV_DEV(dev, dmdev);
	wdev->netdev = dev;
	priv->dev = dev;

	dev->netdev_ops = &lbs_netdev_ops;
	dev->watchdog_timeo = 5 * HZ;
	dev->ethtool_ops = &lbs_ethtool_ops;
	dev->flags |= IFF_BROADCAST | IFF_MULTICAST;

	priv->card = card;

	strcpy(dev->name, "wlan%d");

	lbs_deb_thread("Starting main thread...\n");
	init_waitqueue_head(&priv->waitq);
	priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
	if (IS_ERR(priv->main_thread)) {
		err = PTR_ERR(priv->main_thread);
		lbs_deb_thread("Error creating main thread.\n");
		goto err_ndev;
	}

	priv->work_thread = create_singlethread_workqueue("lbs_worker");
	INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);

	priv->wol_criteria = EHS_REMOVE_WAKEUP;
	priv->wol_gpio = 0xff;
	priv->wol_gap = 20;
	priv->ehs_remove_supported = true;

	return priv;

 err_ndev:
	free_netdev(dev);

 err_adapter:
	lbs_free_adapter(priv);

 err_wdev:

Annotation

Implementation Notes