Queuing Discipline configuration

Overview

// typedefs

typedef enum tapi_cfg_qdisc_kind_t tapi_cfg_qdisc_kind_t;

// enums

enum tapi_cfg_qdisc_kind_t;

// global functions

te_errno tapi_cfg_qdisc_get_enabled(const char* ta, const char* if_name, bool* enabled);
te_errno tapi_cfg_qdisc_set_enabled(const char* ta, const char* if_name, bool enabled);
static te_errno tapi_cfg_qdisc_enable(const char* ta, const char* if_name);
static te_errno tapi_cfg_qdisc_disable(const char* ta, const char* if_name);
te_errno tapi_cfg_qdisc_set_kind(const char* ta, const char* if_name, tapi_cfg_qdisc_kind_t kind);
te_errno tapi_cfg_qdisc_get_kind(const char* ta, const char* if_name, tapi_cfg_qdisc_kind_t* kind);
const char* tapi_cfg_qdisc_kind2str(tapi_cfg_qdisc_kind_t kind);
tapi_cfg_qdisc_kind_t tapi_cfg_qdisc_str2kind(const char* string);
te_errno tapi_cfg_qdisc_get_param(const char* ta, const char* if_name, const char* param, char** value);
te_errno tapi_cfg_qdisc_set_param(const char* ta, const char* if_name, const char* param, const char* value);

// macros

#define TAPI_CFG_QDISC_PARAM_FMT

Detailed Documentation

Example of usage

Usage of TAPI for control NetEm

At first add ./cs.conf.inc.qdisc from ts_conf in your cs.conf

Setup Agent Agt_A analog of command line:

tc qdisc add dev eth1 root netem delay 200ms

#include "tapi_cfg_netem.h"
#include "tapi_cfg_qdisc.h"
...
const char *agent = "Agt_A";
const char *ifname = "eth1";

CHECK_RC(tapi_cfg_qdisc_set_kind(agent, ifname, TAPI_CFG_QDISC_KIND_NETEM));
CHECK_RC(tapi_cfg_netem_set_delay(agent, ifname, TE_MS2US(200)));
CHECK_RC(tapi_cfg_qdisc_enable(agent, ifname));

tc qdisc change dev eth1 root netem delay 100ms 10ms 25%

CHECK_RC(tapi_cfg_qdisc_set_kind(agent, ifname, TAPI_CFG_QDISC_KIND_NETEM));
CHECK_RC(tapi_cfg_netem_set_delay(agent, ifname, TE_MS2US(100)));
CHECK_RC(tapi_cfg_netem_set_jitter(agent, ifname, TE_MS2US(10)));
CHECK_RC(tapi_cfg_netem_set_delay_correlation(agent, ifname, 25.0));
CHECK_RC(tapi_cfg_qdisc_enable(agent, ifname));

tc qdisc add dev eth1 root netem loss 10%

CHECK_RC(tapi_cfg_qdisc_set_kind(agent, ifname, TAPI_CFG_QDISC_KIND_NETEM));
CHECK_RC(tapi_cfg_netem_set_loss(agent, ifname, TE_MS2US(100)));
CHECK_RC(tapi_cfg_qdisc_enable(agent, ifname));

Typedefs

typedef enum tapi_cfg_qdisc_kind_t tapi_cfg_qdisc_kind_t

Qdisc kind support

Global Functions

te_errno tapi_cfg_qdisc_get_enabled(const char* ta, const char* if_name, bool* enabled)

Get status of qdisc

Parameters:

ta	Test Agent
if_name	Interface Name
enabled	Activated or deactivated

Returns:

Status Code

te_errno tapi_cfg_qdisc_set_enabled(const char* ta, const char* if_name, bool enabled)

Set status: activated or deactivated

Parameters:

ta	Test Agent
if_name	Interface Name
enabled	Activate or deactivate

Returns:

Status Code

static te_errno tapi_cfg_qdisc_enable(const char* ta, const char* if_name)

Activate qdisc for interface

Parameters:

ta	Test Agent
if_name	Interface Name

Returns:

Status Code

static te_errno tapi_cfg_qdisc_disable(const char* ta, const char* if_name)

Deactivate qdisc for interface

Parameters:

ta	Test Agent
if_name	Interface Name

Returns:

Status Code

te_errno tapi_cfg_qdisc_set_kind(const char* ta, const char* if_name, tapi_cfg_qdisc_kind_t kind)

Set NetEm kind

Parameters:

ta	Test Agent
if_name	Interface Name
kind	NetEm kind

Returns:

Status Code

te_errno tapi_cfg_qdisc_get_kind(const char* ta, const char* if_name, tapi_cfg_qdisc_kind_t* kind)

Get NetEm kind

Parameters:

ta	Test Agent
if_name	Interface Name
kind	NetEm kind

Returns:

Status Code

const char* tapi_cfg_qdisc_kind2str(tapi_cfg_qdisc_kind_t kind)

Convert qdisc kind enum to string

Parameters:

kind	Qdisc kind

Returns:

kind string

tapi_cfg_qdisc_kind_t tapi_cfg_qdisc_str2kind(const char* string)

Convert qdisc kind string to kind enum

Parameters:

string

Qdisc kind

Returns:

kind enum

te_errno tapi_cfg_qdisc_get_param(const char* ta, const char* if_name, const char* param, char** value)

Get value of qdisc parameter as string value should be free() after use

Parameters:

ta	Test Agent
if_name	Interface name
param	qdisc parameter name
value	Parameter value

Returns:

Status code

te_errno tapi_cfg_qdisc_set_param(const char* ta, const char* if_name, const char* param, const char* value)

Set value of qdisc parameter as string

Parameters:

ta	Test Agent
if_name	Interface name
param	qdisc parameter name
value	Parameter value

Returns:

Status code