drivers/net/wireless/ath/wcn36xx/txrx.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/ath/wcn36xx/txrx.c

File Facts

System: Linux kernel
Corpus path: drivers/net/wireless/ath/wcn36xx/txrx.c
Extension: .c
Size: 23772 bytes
Lines: 735
Domain: Driver Families
Bucket: drivers/net
Inferred role: Driver Families: implementation source
Status: source 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.

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.
Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

linux/random.h
txrx.h

Detected Declarations

struct wcn36xx_rate
function Copyright
function get_snr
function __skb_queue_purge_irq
function wcn36xx_update_survey
function wcn36xx_rx_skb
function wcn36xx_set_tx_pdu
function wcn36xx_tx_start_ampdu
function wcn36xx_set_tx_data
function wcn36xx_set_tx_mgmt
function wcn36xx_start_tx
function wcn36xx_process_tx_rate

Annotated Snippet

struct wcn36xx_rate {
	u16 bitrate;
	u16 mcs_or_legacy_index;
	enum mac80211_rx_encoding encoding;
	enum mac80211_rx_encoding_flags encoding_flags;
	enum rate_info_bw bw;
};

/* Buffer descriptor rx_ch field is limited to 5-bit (4+1), a mapping is used
 * for 11A Channels.
 */
static const u8 ab_rx_ch_map[] = { 36, 40, 44, 48, 52, 56, 60, 64, 100, 104,
				   108, 112, 116, 120, 124, 128, 132, 136, 140,
				   149, 153, 157, 161, 165, 144 };

static const struct wcn36xx_rate wcn36xx_rate_table[] = {
	/* 11b rates */
	{  10, 0, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
	{  20, 1, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
	{  55, 2, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
	{ 110, 3, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },

	/* 11b SP (short preamble) */
	{  10, 0, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 },
	{  20, 1, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 },
	{  55, 2, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 },
	{ 110, 3, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 },

	/* 11ag */
	{  60, 4, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
	{  90, 5, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
	{ 120, 6, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
	{ 180, 7, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
	{ 240, 8, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
	{ 360, 9, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
	{ 480, 10, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
	{ 540, 11, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },

	/* 11n */
	{  65, 0, RX_ENC_HT, 0, RATE_INFO_BW_20 },
	{ 130, 1, RX_ENC_HT, 0, RATE_INFO_BW_20 },
	{ 195, 2, RX_ENC_HT, 0, RATE_INFO_BW_20 },
	{ 260, 3, RX_ENC_HT, 0, RATE_INFO_BW_20 },
	{ 390, 4, RX_ENC_HT, 0, RATE_INFO_BW_20 },
	{ 520, 5, RX_ENC_HT, 0, RATE_INFO_BW_20 },
	{ 585, 6, RX_ENC_HT, 0, RATE_INFO_BW_20 },
	{ 650, 7, RX_ENC_HT, 0, RATE_INFO_BW_20 },

	/* 11n SGI */
	{  72, 0, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
	{ 144, 1, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
	{ 217, 2, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
	{ 289, 3, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
	{ 434, 4, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
	{ 578, 5, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
	{ 650, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
	{ 722, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },

	/* 11n GF (greenfield) */
	{  65, 0, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
	{ 130, 1, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
	{ 195, 2, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
	{ 260, 3, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
	{ 390, 4, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
	{ 520, 5, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
	{ 585, 6, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
	{ 650, 7, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },

	/* 11n CB (channel bonding) */
	{ 135, 0, RX_ENC_HT, 0, RATE_INFO_BW_40 },
	{ 270, 1, RX_ENC_HT, 0, RATE_INFO_BW_40 },
	{ 405, 2, RX_ENC_HT, 0, RATE_INFO_BW_40 },
	{ 540, 3, RX_ENC_HT, 0, RATE_INFO_BW_40 },
	{ 810, 4, RX_ENC_HT, 0, RATE_INFO_BW_40 },
	{ 1080, 5, RX_ENC_HT, 0, RATE_INFO_BW_40 },
	{ 1215, 6, RX_ENC_HT, 0, RATE_INFO_BW_40 },
	{ 1350, 7, RX_ENC_HT, 0, RATE_INFO_BW_40 },

	/* 11n CB + SGI */
	{ 150, 0, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
	{ 300, 1, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
	{ 450, 2, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
	{ 600, 3, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
	{ 900, 4, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
	{ 1200, 5, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
	{ 1500, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },

	/* 11n GF + CB */
	{ 135, 0, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },

Annotation

Immediate include surface: `linux/random.h`, `txrx.h`.
Detected declarations: `struct wcn36xx_rate`, `function Copyright`, `function get_snr`, `function __skb_queue_purge_irq`, `function wcn36xx_update_survey`, `function wcn36xx_rx_skb`, `function wcn36xx_set_tx_pdu`, `function wcn36xx_tx_start_ampdu`, `function wcn36xx_set_tx_data`, `function wcn36xx_set_tx_mgmt`.
Atlas domain: Driver Families / drivers/net.
Implementation status: source implementation candidate.
Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.