rte_class.h File Reference

#include <rte_dev.h>

Go to the source code of this file.

Data Structures
struct	rte_class

Macros
#define	RTE_REGISTER_CLASS(nm, cls)

Typedefs
typedef int(*	rte_class_cmp_t) (const struct rte_class *cls, const void *data)

Functions
	RTE_TAILQ_HEAD (rte_class_list, rte_class)
struct rte_class *	rte_class_find (const struct rte_class *start, rte_class_cmp_t cmp, const void *data)
struct rte_class *	rte_class_find_by_name (const char *name)
void	rte_class_register (struct rte_class *cls)
void	rte_class_unregister (struct rte_class *cls)

Detailed Description

DPDK device class interface.

This file describes the interface of the device class abstraction layer.

A device class defines the type of function a device will be used for e.g.: Ethernet adapter (eth), cryptographic co-processor (crypto), etc.

Definition in file rte_class.h.

Macro Definition Documentation

RTE_REGISTER_CLASS

#define RTE_REGISTER_CLASS	(		nm,
			cls
	)

Value:

RTE_INIT_PRIO(classinitfn_ ##nm, CLASS) \
{\
    (cls).name = RTE_STR(nm); \
    rte_class_register(&cls); \
}

Helper for Class registration. The constructor has lower priority than Bus constructors. The constructor has higher priority than PMD constructors.

Definition at line 111 of file rte_class.h.

Typedef Documentation

rte_class_cmp_t

typedef int(* rte_class_cmp_t) (const struct rte_class *cls, const void *data)

Class comparison function.

Parameters

cls	Class under test.
data	Data to compare against.

Returns

0 if the class matches the data. !0 if the class does not match. <0 if ordering is possible and the class is lower than the data. >0 if ordering is possible and the class is greater than the data.

Definition at line 54 of file rte_class.h.

Function Documentation

RTE_TAILQ_HEAD()

RTE_TAILQ_HEAD	(	rte_class_list	,
		rte_class
	)

Double linked list of classes

Examples:

examples/vm_power_manager/channel_manager.c.

rte_class_find()

struct rte_class* rte_class_find	(	const struct rte_class *	start,
		rte_class_cmp_t	cmp,
		const void *	data
	)

Class iterator to find a particular class.

This function compares each registered class to find one that matches the data passed as parameter.

If the comparison function returns zero this function will stop iterating over any more classes. To continue a search the class of a previous search can be passed via the start parameter.

Parameters

start	Starting point for the iteration.
cmp	Comparison function.
data	Data to pass to comparison function.

Returns

A pointer to a rte_class structure or NULL in case no class matches

rte_class_find_by_name()

struct rte_class* rte_class_find_by_name

(

const char *

name

)

Find the registered class for a given name.

rte_class_register()

void rte_class_register

(

struct rte_class *

cls

)

Register a Class handle.

Parameters

cls	A pointer to a rte_class structure describing the class to be registered.

rte_class_unregister()

void rte_class_unregister

(

struct rte_class *

cls

)

Unregister a Class handle.

Parameters

cls	A pointer to a rte_class structure describing the class to be unregistered.