linux/drivers/net/wireless/broadcom/b43/xmit.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*

  Broadcom B43 wireless driver

  Transmission (TX/RX) related functions.

  Copyright (C) 2005 Martin Langer <[email protected]>
  Copyright (C) 2005 Stefano Brivio <[email protected]>
  Copyright (C) 2005, 2006 Michael Buesch <[email protected]>
  Copyright (C) 2005 Danny van Dyk <[email protected]>
  Copyright (C) 2005 Andreas Jaggi <[email protected]>


*/

#include "xmit.h"
#include "phy_common.h"
#include "dma.h"
#include "pio.h"

static const struct b43_tx_legacy_rate_phy_ctl_entry b43_tx_legacy_rate_phy_ctl[] = …;

static const struct b43_tx_legacy_rate_phy_ctl_entry *
b43_tx_legacy_rate_phy_ctl_ent(u8 bitrate)
{ … }

/* Extract the bitrate index out of a CCK PLCP header. */
static int b43_plcp_get_bitrate_idx_cck(struct b43_plcp_hdr6 *plcp)
{ … }

/* Extract the bitrate index out of an OFDM PLCP header. */
static int b43_plcp_get_bitrate_idx_ofdm(struct b43_plcp_hdr6 *plcp, bool ghz5)
{ … }

u8 b43_plcp_get_ratecode_cck(const u8 bitrate)
{ … }

u8 b43_plcp_get_ratecode_ofdm(const u8 bitrate)
{ … }

void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
			   const u16 octets, const u8 bitrate)
{ … }

/* TODO: verify if needed for SSLPN or LCN  */
static u16 b43_generate_tx_phy_ctl1(struct b43_wldev *dev, u8 bitrate)
{ … }

static u8 b43_calc_fallback_rate(u8 bitrate, int gmode)
{ … }

/* Generate a TX data header. */
int b43_generate_txhdr(struct b43_wldev *dev,
		       u8 *_txhdr,
		       struct sk_buff *skb_frag,
		       struct ieee80211_tx_info *info,
		       u16 cookie)
{ … }

static s8 b43_rssi_postprocess(struct b43_wldev *dev,
			       u8 in_rssi, int ofdm,
			       int adjust_2053, int adjust_2050)
{ … }

void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
{ … }

void b43_handle_txstatus(struct b43_wldev *dev,
			 const struct b43_txstatus *status)
{ … }

/* Fill out the mac80211 TXstatus report based on the b43-specific
 * txstatus report data. This returns a boolean whether the frame was
 * successfully transmitted. */
bool b43_fill_txstatus_report(struct b43_wldev *dev,
			      struct ieee80211_tx_info *report,
			      const struct b43_txstatus *status)
{ … }

/* Stop any TX operation on the device (suspend the hardware queues) */
void b43_tx_suspend(struct b43_wldev *dev)
{ … }

/* Resume any TX operation on the device (resume the hardware queues) */
void b43_tx_resume(struct b43_wldev *dev)
{ … }