drivers/net/wireless/intel/iwlwifi/fw/api/rx.h

Source file repositories/reference/linux-study-clean/drivers/net/wireless/intel/iwlwifi/fw/api/rx.h

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/intel/iwlwifi/fw/api/rx.h
Extension
.h
Size
46864 bytes
Lines
1436
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct iwl_rx_phy_info {
	u8 non_cfg_phy_cnt;
	u8 cfg_phy_cnt;
	u8 stat_id;
	u8 reserved1;
	__le32 system_timestamp;
	__le64 timestamp;
	__le32 beacon_time_stamp;
	__le16 phy_flags;
	__le16 channel;
	__le32 non_cfg_phy[IWL_RX_INFO_PHY_CNT];
	__le32 rate_n_flags;
	__le32 byte_count;
	u8 mac_active_msk;
	u8 mac_context_info;
	__le16 frame_time;
} __packed;

/*
 * TCP offload Rx assist info
 *
 * bits 0:3 - reserved
 * bits 4:7 - MIC CRC length
 * bits 8:12 - MAC header length
 * bit 13 - Padding indication
 * bit 14 - A-AMSDU indication
 * bit 15 - Offload enabled
 */
enum iwl_csum_rx_assist_info {
	CSUM_RXA_RESERVED_MASK	= 0x000f,
	CSUM_RXA_MICSIZE_MASK	= 0x00f0,
	CSUM_RXA_HEADERLEN_MASK	= 0x1f00,
	CSUM_RXA_PADD		= BIT(13),
	CSUM_RXA_AMSDU		= BIT(14),
	CSUM_RXA_ENA		= BIT(15)
};

/**
 * struct iwl_rx_mpdu_res_start - phy info
 * @byte_count: byte count of the frame
 * @assist: see &enum iwl_csum_rx_assist_info
 */
struct iwl_rx_mpdu_res_start {
	__le16 byte_count;
	__le16 assist;
} __packed; /* _RX_MPDU_RES_START_API_S_VER_2 */

/**
 * enum iwl_rx_phy_flags - to parse %iwl_rx_phy_info phy_flags
 * @RX_RES_PHY_FLAGS_BAND_24: true if the packet was received on 2.4 band
 * @RX_RES_PHY_FLAGS_MOD_CCK: modulation is CCK
 * @RX_RES_PHY_FLAGS_SHORT_PREAMBLE: true if packet's preamble was short
 * @RX_RES_PHY_FLAGS_NARROW_BAND: narrow band (<20 MHz) receive
 * @RX_RES_PHY_FLAGS_ANTENNA: antenna on which the packet was received
 * @RX_RES_PHY_FLAGS_ANTENNA_POS: antenna bit position
 * @RX_RES_PHY_FLAGS_AGG: set if the packet was part of an A-MPDU
 * @RX_RES_PHY_FLAGS_OFDM_HT: The frame was an HT frame
 * @RX_RES_PHY_FLAGS_OFDM_GF: The frame used GF preamble
 * @RX_RES_PHY_FLAGS_OFDM_VHT: The frame was a VHT frame
 */
enum iwl_rx_phy_flags {
	RX_RES_PHY_FLAGS_BAND_24	= BIT(0),
	RX_RES_PHY_FLAGS_MOD_CCK	= BIT(1),
	RX_RES_PHY_FLAGS_SHORT_PREAMBLE	= BIT(2),
	RX_RES_PHY_FLAGS_NARROW_BAND	= BIT(3),
	RX_RES_PHY_FLAGS_ANTENNA	= (0x7 << 4),
	RX_RES_PHY_FLAGS_ANTENNA_POS	= 4,
	RX_RES_PHY_FLAGS_AGG		= BIT(7),
	RX_RES_PHY_FLAGS_OFDM_HT	= BIT(8),
	RX_RES_PHY_FLAGS_OFDM_GF	= BIT(9),
	RX_RES_PHY_FLAGS_OFDM_VHT	= BIT(10),
};

/**
 * enum iwl_mvm_rx_status - written by fw for each Rx packet
 * @RX_MPDU_RES_STATUS_CRC_OK: CRC is fine
 * @RX_MPDU_RES_STATUS_OVERRUN_OK: there was no RXE overflow
 * @RX_MPDU_RES_STATUS_SRC_STA_FOUND: station was found
 * @RX_MPDU_RES_STATUS_KEY_VALID: key was valid
 * @RX_MPDU_RES_STATUS_ICV_OK: ICV is fine, if not, the packet is destroyed
 * @RX_MPDU_RES_STATUS_MIC_OK: used for CCM alg only. TKIP MIC is checked
 *	in the driver.
 * @RX_MPDU_RES_STATUS_TTAK_OK: TTAK is fine
 * @RX_MPDU_RES_STATUS_MNG_FRAME_REPLAY_ERR:  valid for alg = CCM_CMAC or
 *	alg = CCM only. Checks replay attack for 11w frames.
 * @RX_MPDU_RES_STATUS_SEC_NO_ENC: this frame is not encrypted
 * @RX_MPDU_RES_STATUS_SEC_WEP_ENC: this frame is encrypted using WEP
 * @RX_MPDU_RES_STATUS_SEC_CCM_ENC: this frame is encrypted using CCM
 * @RX_MPDU_RES_STATUS_SEC_TKIP_ENC: this frame is encrypted using TKIP
 * @RX_MPDU_RES_STATUS_SEC_EXT_ENC: this frame is encrypted using extension

Annotation

Implementation Notes