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

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

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/marvell/mwifiex/main.c
Extension
.c
Size
52014 bytes
Lines
1878
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 mwifiex_netdev_ops = {
	.ndo_open = mwifiex_open,
	.ndo_stop = mwifiex_close,
	.ndo_start_xmit = mwifiex_hard_start_xmit,
	.ndo_set_mac_address = mwifiex_ndo_set_mac_address,
	.ndo_validate_addr = eth_validate_addr,
	.ndo_tx_timeout = mwifiex_tx_timeout,
	.ndo_get_stats = mwifiex_get_stats,
	.ndo_set_rx_mode = mwifiex_set_multicast_list,
	.ndo_select_queue = mwifiex_netdev_select_wmm_queue,
};

/*
 * This function initializes the private structure parameters.
 *
 * The following wait queues are initialized -
 *      - IOCTL wait queue
 *      - Command wait queue
 *      - Statistics wait queue
 *
 * ...and the following default parameters are set -
 *      - Current key index     : Set to 0
 *      - Rate index            : Set to auto
 *      - Media connected       : Set to disconnected
 *      - Adhoc link sensed     : Set to false
 *      - Nick name             : Set to null
 *      - Number of Tx timeout  : Set to 0
 *      - Device address        : Set to current address
 *      - Rx histogram statistc : Set to 0
 *
 * In addition, the CFG80211 work queue is also created.
 */
void mwifiex_init_priv_params(struct mwifiex_private *priv,
			      struct net_device *dev)
{
	dev->netdev_ops = &mwifiex_netdev_ops;
	dev->needs_free_netdev = true;
	/* Initialize private structure */
	priv->current_key_index = 0;
	priv->media_connected = false;
	memset(priv->mgmt_ie, 0,
	       sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
	priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
	priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
	priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
	priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
	priv->num_tx_timeout = 0;
	if (is_valid_ether_addr(dev->dev_addr))
		ether_addr_copy(priv->curr_addr, dev->dev_addr);
	else
		ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);

	if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
	    GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
		priv->hist_data = kmalloc_obj(*priv->hist_data);
		if (priv->hist_data)
			mwifiex_hist_data_reset(priv);
	}
}

/*
 * This function check if command is pending.
 */
int is_command_pending(struct mwifiex_adapter *adapter)
{
	int is_cmd_pend_q_empty;

	spin_lock_bh(&adapter->cmd_pending_q_lock);
	is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
	spin_unlock_bh(&adapter->cmd_pending_q_lock);

	return !is_cmd_pend_q_empty;
}

/* This is the host mlme work queue function.
 * It handles the host mlme operations.
 */
static void mwifiex_host_mlme_work_queue(struct work_struct *work)
{
	struct mwifiex_adapter *adapter =
		container_of(work, struct mwifiex_adapter, host_mlme_work);

	if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
		return;

	/* Check for host mlme disconnection */
	if (adapter->host_mlme_link_lost) {
		if (adapter->priv_link_lost) {
			mwifiex_reset_connect_state(adapter->priv_link_lost,
						    WLAN_REASON_DEAUTH_LEAVING,

Annotation

Implementation Notes