Network Emulator

For further documentation see http://linux-net.osdl.org/index.php/Netem. More...

Queue Limit
void	rtnl_netem_set_limit (struct rtnl_qdisc *qdisc, int limit)
	Set limit of netem qdisc. More...
int	rtnl_netem_get_limit (struct rtnl_qdisc *qdisc)
	Get limit of netem qdisc. More...

Packet Re-ordering
void	rtnl_netem_set_gap (struct rtnl_qdisc *qdisc, int gap)
	Set re-ordering gap of netem qdisc. More...
int	rtnl_netem_get_gap (struct rtnl_qdisc *qdisc)
	Get re-ordering gap of netem qdisc. More...
void	rtnl_netem_set_reorder_probability (struct rtnl_qdisc *qdisc, int prob)
	Set re-ordering probability of netem qdisc. More...
int	rtnl_netem_get_reorder_probability (struct rtnl_qdisc *qdisc)
	Get re-ordering probability of netem qdisc. More...
void	rtnl_netem_set_reorder_correlation (struct rtnl_qdisc *qdisc, int prob)
	Set re-order correlation probability of netem qdisc. More...
int	rtnl_netem_get_reorder_correlation (struct rtnl_qdisc *qdisc)
	Get re-ordering correlation probability of netem qdisc. More...

Corruption
void	rtnl_netem_set_corruption_probability (struct rtnl_qdisc *qdisc, int prob)
	Set corruption probability of netem qdisc. More...
int	rtnl_netem_get_corruption_probability (struct rtnl_qdisc *qdisc)
	Get corruption probability of netem qdisc. More...
void	rtnl_netem_set_corruption_correlation (struct rtnl_qdisc *qdisc, int prob)
	Set corruption correlation probability of netem qdisc. More...
int	rtnl_netem_get_corruption_correlation (struct rtnl_qdisc *qdisc)
	Get corruption correlation probability of netem qdisc. More...

Packet Loss
void	rtnl_netem_set_loss (struct rtnl_qdisc *qdisc, int prob)
	Set packet loss probability of netem qdisc. More...
int	rtnl_netem_get_loss (struct rtnl_qdisc *qdisc)
	Get packet loss probability of netem qdisc. More...
void	rtnl_netem_set_loss_correlation (struct rtnl_qdisc *qdisc, int prob)
	Set packet loss correlation probability of netem qdisc. More...
int	rtnl_netem_get_loss_correlation (struct rtnl_qdisc *qdisc)
	Get packet loss correlation probability of netem qdisc. More...

Packet Duplication
void	rtnl_netem_set_duplicate (struct rtnl_qdisc *qdisc, int prob)
	Set packet duplication probability of netem qdisc. More...
int	rtnl_netem_get_duplicate (struct rtnl_qdisc *qdisc)
	Get packet duplication probability of netem qdisc. More...
void	rtnl_netem_set_duplicate_correlation (struct rtnl_qdisc *qdisc, int prob)
	Set packet duplication correlation probability of netem qdisc. More...
int	rtnl_netem_get_duplicate_correlation (struct rtnl_qdisc *qdisc)
	Get packet duplication correlation probability of netem qdisc. More...

Packet Delay
void	rtnl_netem_set_delay (struct rtnl_qdisc *qdisc, int delay)
	Set packet delay of netem qdisc. More...
int	rtnl_netem_get_delay (struct rtnl_qdisc *qdisc)
	Get packet delay of netem qdisc. More...
void	rtnl_netem_set_jitter (struct rtnl_qdisc *qdisc, int jitter)
	Set packet delay jitter of netem qdisc. More...
int	rtnl_netem_get_jitter (struct rtnl_qdisc *qdisc)
	Get packet delay jitter of netem qdisc. More...
void	rtnl_netem_set_delay_correlation (struct rtnl_qdisc *qdisc, int prob)
	Set packet delay correlation probability of netem qdisc. More...
int	rtnl_netem_get_delay_correlation (struct rtnl_qdisc *qdisc)
	Get packet delay correlation probability of netem qdisc. More...
int	rtnl_netem_get_delay_distribution_size (struct rtnl_qdisc *qdisc)
	Get the size of the distribution table. More...
int	rtnl_netem_get_delay_distribution (struct rtnl_qdisc *qdisc, int16_t **dist_ptr)
	Get a pointer to the distribution table. More...
int	rtnl_netem_set_delay_distribution_data (struct rtnl_qdisc *qdisc, const int16_t *data, size_t len)
	Set the delay distribution data. More...
int	rtnl_netem_set_delay_distribution (struct rtnl_qdisc *qdisc, const char *dist_type)
	Load the delay distribution from a file. More...

Detailed Description

For further documentation see http://linux-net.osdl.org/index.php/Netem.

Function Documentation

rtnl_netem_set_limit()

void rtnl_netem_set_limit	(	struct rtnl_qdisc *	qdisc,
		int	limit
	)

Set limit of netem qdisc.

Parameters

qdisc	Netem qdisc to be modified.
limit	New limit in bytes.

Returns

0 on success or a negative error code.

Definition at line 348 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_limit()

int rtnl_netem_get_limit

(

struct rtnl_qdisc *

qdisc

)

Get limit of netem qdisc.

Parameters

qdisc

Netem qdisc.

Returns

Limit in bytes or a negative error code.

Definition at line 364 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_set_gap()

void rtnl_netem_set_gap	(	struct rtnl_qdisc *	qdisc,
		int	gap
	)

Set re-ordering gap of netem qdisc.

Parameters

qdisc	Netem qdisc to be modified.
gap	New gap in number of packets.

Returns

0 on success or a negative error code.

Definition at line 390 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_gap()

int rtnl_netem_get_gap

(

struct rtnl_qdisc *

qdisc

)

Get re-ordering gap of netem qdisc.

Parameters

qdisc

Netem qdisc.

Returns

Re-ordering gap in packets or a negative error code.

Definition at line 406 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_set_reorder_probability()

void rtnl_netem_set_reorder_probability	(	struct rtnl_qdisc *	qdisc,
		int	prob
	)

Set re-ordering probability of netem qdisc.

Parameters

qdisc	Netem qdisc to be modified.
prob	New re-ordering probability.

Returns

0 on success or a negative error code.

Definition at line 425 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_reorder_probability()

int rtnl_netem_get_reorder_probability

(

struct rtnl_qdisc *

qdisc

)

Get re-ordering probability of netem qdisc.

Parameters

qdisc

Netem qdisc.

Returns

Re-ordering probability or a negative error code.

Definition at line 441 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_set_reorder_correlation()

void rtnl_netem_set_reorder_correlation	(	struct rtnl_qdisc *	qdisc,
		int	prob
	)

Set re-order correlation probability of netem qdisc.

Parameters

qdisc	Netem qdisc to be modified.
prob	New re-ordering correlation probability.

Returns

0 on success or a negative error code.

Definition at line 460 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_reorder_correlation()

int rtnl_netem_get_reorder_correlation

(

struct rtnl_qdisc *

qdisc

)

Get re-ordering correlation probability of netem qdisc.

Parameters

qdisc

Netem qdisc.

Returns

Re-ordering correlation probability or a negative error code.

Definition at line 476 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_set_corruption_probability()

void rtnl_netem_set_corruption_probability	(	struct rtnl_qdisc *	qdisc,
		int	prob
	)

Set corruption probability of netem qdisc.

Parameters

qdisc	Netem qdisc to be modified.
prob	New corruption probability.

Returns

0 on success or a negative error code.

Definition at line 502 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_corruption_probability()

int rtnl_netem_get_corruption_probability

(

struct rtnl_qdisc *

qdisc

)

Get corruption probability of netem qdisc.

Parameters

qdisc

Netem qdisc.

Returns

Corruption probability or a negative error code.

Definition at line 518 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_set_corruption_correlation()

void rtnl_netem_set_corruption_correlation	(	struct rtnl_qdisc *	qdisc,
		int	prob
	)

Set corruption correlation probability of netem qdisc.

Parameters

qdisc	Netem qdisc to be modified.
prob	New corruption correlation probability.

Returns

0 on success or a negative error code.

Definition at line 537 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_corruption_correlation()

int rtnl_netem_get_corruption_correlation

(

struct rtnl_qdisc *

qdisc

)

Get corruption correlation probability of netem qdisc.

Parameters

qdisc

Netem qdisc.

Returns

Corruption correlation probability or a negative error code.

Definition at line 553 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_set_loss()

void rtnl_netem_set_loss	(	struct rtnl_qdisc *	qdisc,
		int	prob
	)

Set packet loss probability of netem qdisc.

Parameters

qdisc	Netem qdisc to be modified.
prob	New packet loss probability.

Returns

0 on success or a negative error code.

Definition at line 579 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_loss()

int rtnl_netem_get_loss

(

struct rtnl_qdisc *

qdisc

)

Get packet loss probability of netem qdisc.

Parameters

qdisc

Netem qdisc.

Returns

Packet loss probability or a negative error code.

Definition at line 595 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_set_loss_correlation()

void rtnl_netem_set_loss_correlation	(	struct rtnl_qdisc *	qdisc,
		int	prob
	)

Set packet loss correlation probability of netem qdisc.

Parameters

qdisc	Netem qdisc to be modified.
prob	New packet loss correlation.

Returns

0 on success or a negative error code.

Definition at line 614 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_loss_correlation()

int rtnl_netem_get_loss_correlation

(

struct rtnl_qdisc *

qdisc

)

Get packet loss correlation probability of netem qdisc.

Parameters

qdisc

Netem qdisc.

Returns

Packet loss correlation probability or a negative error code.

Definition at line 630 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_set_duplicate()

void rtnl_netem_set_duplicate	(	struct rtnl_qdisc *	qdisc,
		int	prob
	)

Set packet duplication probability of netem qdisc.

Parameters

qdisc	Netem qdisc to be modified.
prob	New packet duplication probability.

Returns

0 on success or a negative error code.

Definition at line 656 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_duplicate()

int rtnl_netem_get_duplicate

(

struct rtnl_qdisc *

qdisc

)

Get packet duplication probability of netem qdisc.

Parameters

qdisc

Netem qdisc.

Returns

Packet duplication probability or a negative error code.

Definition at line 672 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_set_duplicate_correlation()

void rtnl_netem_set_duplicate_correlation	(	struct rtnl_qdisc *	qdisc,
		int	prob
	)

Set packet duplication correlation probability of netem qdisc.

Parameters

qdisc	Netem qdisc to be modified.
prob	New packet duplication correlation probability.

Returns

0 on success or a negative error code.

Definition at line 691 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_duplicate_correlation()

int rtnl_netem_get_duplicate_correlation

(

struct rtnl_qdisc *

qdisc

)

Get packet duplication correlation probability of netem qdisc.

Parameters

qdisc

Netem qdisc.

Returns

Packet duplication correlation probability or a negative error code.

Definition at line 707 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_set_delay()

void rtnl_netem_set_delay	(	struct rtnl_qdisc *	qdisc,
		int	delay
	)

Set packet delay of netem qdisc.

Parameters

qdisc	Netem qdisc to be modified.
delay	New packet delay in micro seconds.

Returns

0 on success or a negative error code.

Definition at line 733 of file netem.c.

References nl_us2ticks(), rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_delay()

int rtnl_netem_get_delay

(

struct rtnl_qdisc *

qdisc

)

Get packet delay of netem qdisc.

Parameters

qdisc

Netem qdisc.

Returns

Packet delay in micro seconds or a negative error code.

Definition at line 749 of file netem.c.

References nl_ticks2us(), rtnl_tc_data(), and TC_CAST.

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rtnl_netem_set_jitter()

void rtnl_netem_set_jitter	(	struct rtnl_qdisc *	qdisc,
		int	jitter
	)

Set packet delay jitter of netem qdisc.

Parameters

qdisc	Netem qdisc to be modified.
jitter	New packet delay jitter in micro seconds.

Returns

0 on success or a negative error code.

Definition at line 768 of file netem.c.

References nl_us2ticks(), rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_jitter()

int rtnl_netem_get_jitter

(

struct rtnl_qdisc *

qdisc

)

Get packet delay jitter of netem qdisc.

Parameters

qdisc

Netem qdisc.

Returns

Packet delay jitter in micro seconds or a negative error code.

Definition at line 784 of file netem.c.

References nl_ticks2us(), rtnl_tc_data(), and TC_CAST.

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rtnl_netem_set_delay_correlation()

void rtnl_netem_set_delay_correlation	(	struct rtnl_qdisc *	qdisc,
		int	prob
	)

Set packet delay correlation probability of netem qdisc.

Parameters

qdisc	Netem qdisc to be modified.
prob	New packet delay correlation probability.

Definition at line 802 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_delay_correlation()

int rtnl_netem_get_delay_correlation

(

struct rtnl_qdisc *

qdisc

)

Get packet delay correlation probability of netem qdisc.

Parameters

qdisc

Netem qdisc.

Returns

Packet delay correlation probability or a negative error code.

Definition at line 818 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_delay_distribution_size()

int rtnl_netem_get_delay_distribution_size

(

struct rtnl_qdisc *

qdisc

)

Get the size of the distribution table.

Parameters

qdisc

Netem qdisc.

Returns

Distribution table size or a negative error code.

Definition at line 836 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_get_delay_distribution()

int rtnl_netem_get_delay_distribution	(	struct rtnl_qdisc *	qdisc,
		int16_t **	dist_ptr
	)

Get a pointer to the distribution table.

Parameters

qdisc	Netem qdisc.
dist_ptr	The pointer to set.

Returns

Negative error code on failure or 0 on success.

Definition at line 855 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

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rtnl_netem_set_delay_distribution_data()

int rtnl_netem_set_delay_distribution_data	(	struct rtnl_qdisc *	qdisc,
		const int16_t *	data,
		size_t	len
	)

Set the delay distribution data.

Latency/jitter must be set before applying.

Parameters

qdisc

Netem qdisc.

Returns

0 on success, error code on failure.

Definition at line 874 of file netem.c.

References rtnl_tc_data(), and TC_CAST.

Referenced by rtnl_netem_set_delay_distribution().

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rtnl_netem_set_delay_distribution()

int rtnl_netem_set_delay_distribution	(	struct rtnl_qdisc *	qdisc,
		const char *	dist_type
	)

Load the delay distribution from a file.

Latency/jitter must be set before applying.

Parameters

qdisc	Netem qdisc.
dist_type	The name of the distribution (type, file, path/file).

Returns

0 on success, error code on failure.

Definition at line 905 of file netem.c.

References rtnl_netem_set_delay_distribution_data().

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