linux/drivers/net/wireless/marvell/mwifiex/txrx.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * NXP Wireless LAN device driver: generic TX/RX data handling
 *
 * Copyright 2011-2020 NXP
 */

#include "decl.h"
#include "ioctl.h"
#include "util.h"
#include "fw.h"
#include "main.h"
#include "wmm.h"

/*
 * This function processes the received buffer.
 *
 * Main responsibility of this function is to parse the RxPD to
 * identify the correct interface this packet is headed for and
 * forwarding it to the associated handling function, where the
 * packet will be further processed and sent to kernel/upper layer
 * if required.
 */
int mwifiex_handle_rx_packet(struct mwifiex_adapter *adapter,
			     struct sk_buff *skb)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * This function sends a packet to device.
 *
 * It processes the packet to add the TxPD, checks condition and
 * sends the processed packet to firmware for transmission.
 *
 * On successful completion, the function calls the completion callback
 * and logs the time.
 */
int mwifiex_process_tx(struct mwifiex_private *priv, struct sk_buff *skb,
		       struct mwifiex_tx_param *tx_param)
{ … }

static int mwifiex_host_to_card(struct mwifiex_adapter *adapter,
				struct sk_buff *skb,
				struct mwifiex_tx_param *tx_param)
{ … }

static int
mwifiex_dequeue_tx_queue(struct mwifiex_adapter *adapter)
{ … }

void
mwifiex_process_tx_queue(struct mwifiex_adapter *adapter)
{ … }

/*
 * Packet send completion callback handler.
 *
 * It either frees the buffer directly or forwards it to another
 * completion callback which checks conditions, updates statistics,
 * wakes up stalled traffic queue if required, and then frees the buffer.
 */
int mwifiex_write_data_complete(struct mwifiex_adapter *adapter,
				struct sk_buff *skb, int aggr, int status)
{ … }
EXPORT_SYMBOL_GPL(…);

void mwifiex_parse_tx_status_event(struct mwifiex_private *priv,
				   void *event_body)
{ … }