Stochastic Fairness Queueing (SFQ)

Attribute Access
void	rtnl_sfq_set_quantum (struct rtnl_qdisc *qdisc, int quantum)
	Set quantum of SFQ qdisc. More...
int	rtnl_sfq_get_quantum (struct rtnl_qdisc *qdisc)
	Get quantum of SFQ qdisc. More...
void	rtnl_sfq_set_limit (struct rtnl_qdisc *qdisc, int limit)
	Set limit of SFQ qdisc. More...
int	rtnl_sfq_get_limit (struct rtnl_qdisc *qdisc)
	Get limit of SFQ qdisc. More...
void	rtnl_sfq_set_perturb (struct rtnl_qdisc *qdisc, int perturb)
	Set perturbation interval of SFQ qdisc. More...
int	rtnl_sfq_get_perturb (struct rtnl_qdisc *qdisc)
	Get perturbation interval of SFQ qdisc. More...
int	rtnl_sfq_get_divisor (struct rtnl_qdisc *qdisc)
	Get divisor of SFQ qdisc. More...

Detailed Description

Parameter Description

• Quantum: Number of bytes to send out per slot and round.
• Perturbation: Timer period between changing the hash function.
• Limit: Upper limit of queue in number of packets before SFQ starts dropping packets.
• Divisor: Hash table divisor, i.e. size of hash table.

Function Documentation

rtnl_sfq_set_quantum()

void rtnl_sfq_set_quantum	(	struct rtnl_qdisc *	qdisc,
		int	quantum
	)

Set quantum of SFQ qdisc.

Parameters

qdisc	SFQ qdisc to be modified.
quantum	New quantum in bytes.

Returns

0 on success or a negative error code.

Definition at line 108 of file sfq.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_sfq_get_quantum()

int rtnl_sfq_get_quantum

(

struct rtnl_qdisc *

qdisc

)

Get quantum of SFQ qdisc.

Parameters

qdisc

SFQ qdisc.

Returns

Quantum in bytes or a negative error code.

Definition at line 124 of file sfq.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_sfq_set_limit()

void rtnl_sfq_set_limit	(	struct rtnl_qdisc *	qdisc,
		int	limit
	)

Set limit of SFQ qdisc.

Parameters

qdisc	SFQ qdisc to be modified.
limit	New limit in number of packets.

Returns

0 on success or a negative error code.

Definition at line 143 of file sfq.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_sfq_get_limit()

int rtnl_sfq_get_limit

(

struct rtnl_qdisc *

qdisc

)

Get limit of SFQ qdisc.

Parameters

qdisc

SFQ qdisc.

Returns

Limit or a negative error code.

Definition at line 159 of file sfq.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_sfq_set_perturb()

void rtnl_sfq_set_perturb	(	struct rtnl_qdisc *	qdisc,
		int	perturb
	)

Set perturbation interval of SFQ qdisc.

Parameters

qdisc	SFQ qdisc to be modified.
perturb	New perturbation interval in seconds.

Note

A value of 0 disables perturbation altogether.

Returns

0 on success or a negative error code.

Definition at line 179 of file sfq.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_sfq_get_perturb()

int rtnl_sfq_get_perturb

(

struct rtnl_qdisc *

qdisc

)

Get perturbation interval of SFQ qdisc.

Parameters

qdisc

SFQ qdisc.

Returns

Perturbation interval in seconds or a negative error code.

Definition at line 195 of file sfq.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_sfq_get_divisor()

int rtnl_sfq_get_divisor

(

struct rtnl_qdisc *

qdisc

)

Get divisor of SFQ qdisc.

Parameters

qdisc

SFQ qdisc.

Returns

Divisor in number of entries or a negative error code.

Definition at line 213 of file sfq.c.

References rtnl_tc_data(), and TC_CAST.

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