drivers/net/ethernet/intel/e1000e/hw.h

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/intel/e1000e/hw.h

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/intel/e1000e/hw.h
Extension
.h
Size
18896 bytes
Lines
739
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 e1000_tx_desc {
	__le64 buffer_addr;      /* Address of the descriptor's data buffer */
	union {
		__le32 data;
		struct {
			__le16 length;    /* Data buffer length */
			u8 cso;	/* Checksum offset */
			u8 cmd;	/* Descriptor control */
		} flags;
	} lower;
	union {
		__le32 data;
		struct {
			u8 status;     /* Descriptor status */
			u8 css;	/* Checksum start */
			__le16 special;
		} fields;
	} upper;
};

/* Offload Context Descriptor */
struct e1000_context_desc {
	union {
		__le32 ip_config;
		struct {
			u8 ipcss;      /* IP checksum start */
			u8 ipcso;      /* IP checksum offset */
			__le16 ipcse;     /* IP checksum end */
		} ip_fields;
	} lower_setup;
	union {
		__le32 tcp_config;
		struct {
			u8 tucss;      /* TCP checksum start */
			u8 tucso;      /* TCP checksum offset */
			__le16 tucse;     /* TCP checksum end */
		} tcp_fields;
	} upper_setup;
	__le32 cmd_and_length;
	union {
		__le32 data;
		struct {
			u8 status;     /* Descriptor status */
			u8 hdr_len;    /* Header length */
			__le16 mss;       /* Maximum segment size */
		} fields;
	} tcp_seg_setup;
};

/* Offload data descriptor */
struct e1000_data_desc {
	__le64 buffer_addr;   /* Address of the descriptor's buffer address */
	union {
		__le32 data;
		struct {
			__le16 length;    /* Data buffer length */
			u8 typ_len_ext;
			u8 cmd;
		} flags;
	} lower;
	union {
		__le32 data;
		struct {
			u8 status;     /* Descriptor status */
			u8 popts;      /* Packet Options */
			__le16 special;
		} fields;
	} upper;
};

/* Statistics counters collected by the MAC */
struct e1000_hw_stats {
	u64 crcerrs;
	u64 algnerrc;
	u64 symerrs;
	u64 rxerrc;
	u64 mpc;
	u64 scc;
	u64 ecol;
	u64 mcc;
	u64 latecol;
	u64 colc;
	u64 dc;
	u64 tncrs;
	u64 sec;
	u64 cexterr;
	u64 rlec;
	u64 xonrxc;
	u64 xontxc;
	u64 xoffrxc;

Annotation

Implementation Notes