(Fast) Prio
[Queueing Disciplines]

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Detailed Description

1) Typical PRIO configuration

 // Specify the maximal number of bands to be used for this PRIO qdisc.
 rtnl_qdisc_prio_set_bands(qdisc, QDISC_PRIO_DEFAULT_BANDS);

 // Provide a map assigning each priority to a band number.
 uint8_t map[] = QDISC_PRIO_DEFAULT_PRIOMAP;
 rtnl_qdisc_prio_set_priomap(qdisc, map, sizeof(map));

Priority Band Translations
char *	rtnl_prio2str (int prio, char *buf, size_t size)
	Convert priority to character string.
int	rtnl_str2prio (const char *name)
	Convert character string to priority.
Attribute Modification
int	rtnl_qdisc_prio_set_bands (struct rtnl_qdisc *qdisc, int bands)
	Set number of bands of PRIO qdisc.
int	rtnl_qdisc_prio_get_bands (struct rtnl_qdisc *qdisc)
	Get number of bands of PRIO qdisc.
int	rtnl_qdisc_prio_set_priomap (struct rtnl_qdisc *qdisc, uint8_t priomap[], int len)
	Set priomap of the PRIO qdisc.
uint8_t *	rtnl_qdisc_prio_get_priomap (struct rtnl_qdisc *qdisc)
	Get priomap of a PRIO qdisc.
Default Values
#define	QDISC_PRIO_DEFAULT_BANDS   3
	Default number of bands.
#define	QDISC_PRIO_DEFAULT_PRIOMAP   { 1, 2, 2, 2, 1, 2, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1 }
	Default priority mapping.

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Define Documentation

#define QDISC_PRIO_DEFAULT_BANDS   3

Default number of bands.

Definition at line 26 of file prio.h.

#define QDISC_PRIO_DEFAULT_PRIOMAP   { 1, 2, 2, 2, 1, 2, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1 }

Default priority mapping.

Definition at line 32 of file prio.h.

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Function Documentation

int rtnl_qdisc_prio_set_bands	(	struct rtnl_qdisc *	qdisc,
		int	bands
	)

Set number of bands of PRIO qdisc.

Parameters:

	qdisc	PRIO qdisc to be modified.
	bands	New number of bands.

Returns:

0 on success or a negative error code.

Definition at line 170 of file prio.c.

int rtnl_qdisc_prio_get_bands

(

struct rtnl_qdisc *

qdisc

)

Get number of bands of PRIO qdisc.

Parameters:

qdisc

PRIO qdisc.

Returns:

Number of bands or a negative error code.

Definition at line 189 of file prio.c.

int rtnl_qdisc_prio_set_priomap	(	struct rtnl_qdisc *	qdisc,
		uint8_t	priomap[],
		int	len
	)

Set priomap of the PRIO qdisc.

Parameters:

	qdisc	PRIO qdisc to be modified.
	priomap	New priority mapping.
	len	Length of priomap (# of elements).

Returns:

0 on success or a negative error code.

Definition at line 207 of file prio.c.

uint8_t* rtnl_qdisc_prio_get_priomap

(

struct rtnl_qdisc *

qdisc

)

Get priomap of a PRIO qdisc.

Parameters:

qdisc

PRIO qdisc.

Returns:

Priority mapping as array of size TC_PRIO_MAX+1 or NULL if an error occured.

Definition at line 241 of file prio.c.

char* rtnl_prio2str	(	int	prio,
		char *	buf,
		size_t	size
	)

Convert priority to character string.

Parameters:

	prio	Priority.
	buf	Destination buffer
	size	Size of destination buffer.

Converts a priority to a character string and stores the result in the specified destination buffer.

Returns:

Name of priority as character string.

Definition at line 281 of file prio.c.

int rtnl_str2prio

(

const char *

name

)

Convert character string to priority.

Parameters:

name

Name of priority.

Converts the provided character string specifying a priority to the corresponding numeric value.

Returns:

Numeric priority or a negative value if no match was found.

Definition at line 295 of file prio.c.

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