natsemi_descriptor Union Reference

A packet descriptor. More...

#include <natsemi.h>

Public Member Functions
struct {
uint8_t   reserved_a [16]
	Reserved. More...
uint32_t   cmdsts
	Command / status. More...
uint8_t   reserved_b [12]
	Reserved. More...
}	__attribute__ ((packed)) common
	Common fields. More...
struct {
uint8_t   reserved [12]
	Reserved. More...
struct natsemi_descriptor_32   d32
	Descriptor. More...
}	__attribute__ ((packed)) d32pad
	32-bit descriptor More...

Data Fields
struct natsemi_descriptor_64	d64
	64-bit descriptor More...

Detailed Description

A packet descriptor.

The 32-bit and 64-bit variants are overlaid such that "cmdsts" can be accessed as a common field, and the overall size is a power of two (to allow the descriptor ring length to be used as an alignment).

Definition at line 48 of file natsemi.h.

Member Function Documentation

__attribute__() [1/2]

struct natsemi_descriptor::@84 natsemi_descriptor::__attribute__

(

(packed)

)

Common fields.

__attribute__() [2/2]

struct natsemi_descriptor::@85 natsemi_descriptor::__attribute__

(

(packed)

)

32-bit descriptor

Field Documentation

reserved_a

uint8_t natsemi_descriptor::reserved_a[16]

Reserved.

Definition at line 52 of file natsemi.h.

cmdsts

uint32_t natsemi_descriptor::cmdsts

Command / status.

Definition at line 54 of file natsemi.h.

reserved_b

uint8_t natsemi_descriptor::reserved_b[12]

Reserved.

Definition at line 56 of file natsemi.h.

d64

struct natsemi_descriptor_64 natsemi_descriptor::d64

64-bit descriptor

Definition at line 59 of file natsemi.h.

Referenced by natsemi_create_ring().

reserved

uint8_t natsemi_descriptor::reserved[12]

Reserved.

Definition at line 63 of file natsemi.h.

d32

struct natsemi_descriptor_32 natsemi_descriptor::d32

Descriptor.

Definition at line 65 of file natsemi.h.

Referenced by natsemi_create_ring().

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The documentation for this union was generated from the following file:

• drivers/net/natsemi.h