igmp_router.c File Reference

IGMP router. More...

#include "core/net.h"
#include "ipv4/ipv4.h"
#include "igmp/igmp_router.h"
#include "igmp/igmp_router_misc.h"
#include "debug.h"

Go to the source code of this file.

Macros
#define	TRACE_LEVEL   IGMP_TRACE_LEVEL

Functions
void	igmpRouterGetDefaultSettings (IgmpRouterSettings *settings)
	Initialize settings with default values. More...
error_t	igmpRouterInit (IgmpRouterContext *context, const IgmpRouterSettings *settings)
	IGMP router initialization. More...
error_t	igmpRouterStart (IgmpRouterContext *context)
	Start IGMP router. More...
error_t	igmpRouterStop (IgmpRouterContext *context)
	Stop IGMP router. More...
void	igmpRouterTick (IgmpRouterContext *context)
	IGMP router timer handler. More...
void	igmpRouterFsm (IgmpRouterContext *context)
	IGMP router state machine. More...
void	igmpRouterGroupFsm (IgmpRouterContext *context, IgmpRouterGroup *group)
	IGMP group state machine. More...

Detailed Description

IGMP router.

License

SPDX-License-Identifier: GPL-2.0-or-later

Copyright (C) 2010-2025 Oryx Embedded SARL. All rights reserved.

This file is part of CycloneTCP Open.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Description

IGMP is used by IP hosts to report their multicast group memberships to routers. Refer to the following RFCs for complete details:

• RFC 1112: Host Extensions for IP Multicasting
• RFC 2236: Internet Group Management Protocol, Version 2
• RFC 3376: Internet Group Management Protocol, Version 3

Author

Oryx Embedded SARL (www.oryx-embedded.com)

Version

2.5.4

Definition in file igmp_router.c.

Macro Definition Documentation

TRACE_LEVEL

#define TRACE_LEVEL   IGMP_TRACE_LEVEL

Definition at line 40 of file igmp_router.c.

Function Documentation

igmpRouterFsm()

void igmpRouterFsm

(

IgmpRouterContext *

context

)

IGMP router state machine.

Parameters

[in]

context

Pointer to the IGMP router context

Definition at line 245 of file igmp_router.c.

igmpRouterGetDefaultSettings()

void igmpRouterGetDefaultSettings

(

IgmpRouterSettings *

settings

)

Initialize settings with default values.

Parameters

[out]

settings

Structure that contains IGMP router settings

Definition at line 58 of file igmp_router.c.

igmpRouterGroupFsm()

void igmpRouterGroupFsm	(	IgmpRouterContext *	context,
		IgmpRouterGroup *	group
	)

IGMP group state machine.

Parameters

[in]	context	Pointer to the IGMP router context
[in]	group	Multicast group

Definition at line 316 of file igmp_router.c.

igmpRouterInit()

error_t igmpRouterInit	(	IgmpRouterContext *	context,
		const IgmpRouterSettings *	settings
	)

IGMP router initialization.

Parameters

[in]	context	Pointer to the IGMP router context
[in]	settings	IGMP router specific settings

Returns

Error code

Definition at line 87 of file igmp_router.c.

igmpRouterStart()

error_t igmpRouterStart

(

IgmpRouterContext *

context

)

Start IGMP router.

Parameters

[in]

context

Pointer to the IGMP router context

Returns

Error code

Definition at line 149 of file igmp_router.c.

igmpRouterStop()

error_t igmpRouterStop

(

IgmpRouterContext *

context

)

Stop IGMP router.

Parameters

[in]

context

Pointer to the IGMP router context

Returns

Error code

Definition at line 183 of file igmp_router.c.

igmpRouterTick()

void igmpRouterTick

(

IgmpRouterContext *

context

)

IGMP router timer handler.

This routine must be periodically called by the TCP/IP stack to update IGMP router state machines

Parameters

[in]

context

Pointer to the IGMP router context

Definition at line 220 of file igmp_router.c.