Helper functions for MLD node. More...

#include "core/net.h"
#include "ipv6/ipv6.h"
#include "ipv6/ipv6_multicast.h"
#include "ipv6/icmpv6.h"
#include "mld/mld_node.h"
#include "mld/mld_node_misc.h"
#include "debug.h"

Macros
#define	TRACE_LEVEL MLD_TRACE_LEVEL

Functions
void	mldNodeChangeCompatibilityMode (MldNodeContext *context, MldVersion compatibilityMode)
	Change host compatibility mode. More...

void	mldNodeSendUnsolicitedReport (MldNodeContext context, const Ipv6Addr groupAddr)
	Send an unsolicited Report message. More...

void	mldNodeSendListenerReport (MldNodeContext context, const Ipv6Addr groupAddr)
	Send Multicast Listener Report message. More...

void	mldNodeSendListenerDone (MldNodeContext context, const Ipv6Addr groupAddr)
	Send Multicast Listener Done message. More...

void	mldNodeSendCurrentStateReport (MldNodeContext context, const Ipv6Addr groupAddr)
	Send Current-State Report message. More...

void	mldNodeSendStateChangeReport (MldNodeContext context, const Ipv6Addr groupAddr)
	Send State-Change Report message. More...

void	mldNodeFlushReportRecords (MldNodeContext context, NetBuffer buffer, size_t offset, size_t *length)
	Flush report records. More...

void	mldNodeProcessMessage (MldNodeContext context, const Ipv6PseudoHeader pseudoHeader, const MldMessage *message, size_t length)
	Process incoming MLD message. More...

void	mldNodeProcessListenerQuery (MldNodeContext context, const Ipv6PseudoHeader pseudoHeader, const MldMessage *message, size_t length)
	Process incoming Multicast Listener Query message. More...

void	mldNodeProcessListenerQueryV2 (MldNodeContext context, const Ipv6PseudoHeader pseudoHeader, const MldListenerQueryV2 *message, size_t length)
	Process incoming Version 2 Multicast Listener Query message. More...

void	mldNodeProcessListenerReport (MldNodeContext context, const Ipv6PseudoHeader pseudoHeader, const MldMessage *message, size_t length)
	Process incoming Multicast Listener Report message. More...

void	mldNodeMergeReports (MldNodeGroup group, IpFilterMode newFilterMode, const Ipv6SrcAddrList newFilter)
	Merge difference the report and the pending report. More...

bool_t	mldNodeGetRetransmitStatus (MldNodeContext *context)
	Get the retransmission status of the State-Change report. More...

bool_t	mldNodeGetGroupRetransmitStatus (MldNodeGroup *group)
	Get the retransmission status for a given group. More...

void	mldNodeDecGroupRetransmitCounters (MldNodeGroup *group)
	Decrement retransmission counters for a given group. More...

MldNodeGroup *	mldNodeCreateGroup (MldNodeContext context, const Ipv6Addr groupAddr)
	Create a new multicast group. More...

MldNodeGroup *	mldNodeFindGroup (MldNodeContext context, const Ipv6Addr groupAddr)
	Search the list of multicast groups for a given group address. More...

bool_t	mldNodeMatchGroup (MldNodeGroup group, const Ipv6Addr multicastAddr)
	Check whether a group matches a given multicast address. More...

void	mldNodeDeleteGroup (MldNodeGroup *group)
	Delete a multicast group. More...

void	mldNodeFlushUnusedGroups (MldNodeContext *context)
	Delete groups in "non-existent" state. More...

error_t	mldNodeAddSrcAddr (MldNodeSrcAddrList list, const Ipv6Addr srcAddr)
	Append a source address to a given list. More...

void	mldNodeRemoveSrcAddr (MldNodeSrcAddrList list, const Ipv6Addr srcAddr)
	Remove a source address from a given list. More...

int_t	mldNodeFindSrcAddr (const MldNodeSrcAddrList list, const Ipv6Addr srcAddr)
	Search the list of sources for a given IP address. More...

Detailed Description

Helper functions for MLD node.

License

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

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.

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

Version: 2.4.4

Definition in file mld_node_misc.c.

Macro Definition Documentation

◆ TRACE_LEVEL

#define TRACE_LEVEL MLD_TRACE_LEVEL

Definition at line 32 of file mld_node_misc.c.

Function Documentation

◆ mldNodeAddSrcAddr()

error_t mldNodeAddSrcAddr	(	MldNodeSrcAddrList *	list,
		const Ipv6Addr *	srcAddr
	)

Append a source address to a given list.

Parameters

[in]	list	Pointer to the list of source addresses
[in]	srcAddr	Source address to be added

Definition at line 1479 of file mld_node_misc.c.

◆ mldNodeChangeCompatibilityMode()

void mldNodeChangeCompatibilityMode	(	MldNodeContext *	context,
		MldVersion	compatibilityMode
	)

Change host compatibility mode.

Parameters

[in]	context	Pointer to the MLD node context
[in]	compatibilityMode	New host compatibility mode

Definition at line 53 of file mld_node_misc.c.

◆ mldNodeCreateGroup()

MldNodeGroup* mldNodeCreateGroup	(	MldNodeContext *	context,
		const Ipv6Addr *	groupAddr
	)

Create a new multicast group.

Parameters

[in]	context	Pointer to the MLD node context
[in]	groupAddr	Multicast group address

Returns: Pointer to the newly created multicast group

Definition at line 1302 of file mld_node_misc.c.

◆ mldNodeDecGroupRetransmitCounters()

void mldNodeDecGroupRetransmitCounters ( MldNodeGroup * group )

Decrement retransmission counters for a given group.

Parameters

[in] group Pointer to the multicast group

Definition at line 1241 of file mld_node_misc.c.

◆ mldNodeDeleteGroup()

void mldNodeDeleteGroup ( MldNodeGroup * group )

Delete a multicast group.

Parameters

[in] group Pointer to the multicast group

Definition at line 1425 of file mld_node_misc.c.

◆ mldNodeFindGroup()

MldNodeGroup* mldNodeFindGroup	(	MldNodeContext *	context,
		const Ipv6Addr *	groupAddr
	)

Search the list of multicast groups for a given group address.

Parameters

[in]	context	Pointer to the MLD node context
[in]	groupAddr	Multicast group address

Returns: Pointer to the matching multicast group, if any

Definition at line 1363 of file mld_node_misc.c.

◆ mldNodeFindSrcAddr()

int_t mldNodeFindSrcAddr	(	const MldNodeSrcAddrList *	list,
		const Ipv6Addr *	srcAddr
	)

Search the list of sources for a given IP address.

Parameters

[in]	list	Pointer to the list of source addresses
[in]	srcAddr	Source IP address

Returns: Index of the matching IP address is returned. -1 is returned if the specified IP address cannot be found

Definition at line 1564 of file mld_node_misc.c.

◆ mldNodeFlushReportRecords()

void mldNodeFlushReportRecords	(	MldNodeContext *	context,
		NetBuffer *	buffer,
		size_t	offset,
		size_t *	length
	)

Flush report records.

Parameters

[in]	context	Pointer to the MLD node context
[in]	buffer	Multi-part buffer containing the report message
[in]	offset	Offset to the first byte of the report message
[in,out]	length	Length of the report message, in bytes

Definition at line 658 of file mld_node_misc.c.

◆ mldNodeFlushUnusedGroups()

void mldNodeFlushUnusedGroups ( MldNodeContext * context )

Delete groups in "non-existent" state.

Parameters

[in] context Pointer to the MLD node context

Definition at line 1441 of file mld_node_misc.c.

◆ mldNodeGetGroupRetransmitStatus()

bool_t mldNodeGetGroupRetransmitStatus ( MldNodeGroup * group )

Get the retransmission status for a given group.

Parameters

[in] group Pointer to the multicast group

Returns: TRUE if additional retransmissions are needed, else FALSE

Definition at line 1209 of file mld_node_misc.c.

◆ mldNodeGetRetransmitStatus()

bool_t mldNodeGetRetransmitStatus ( MldNodeContext * context )

Get the retransmission status of the State-Change report.

Parameters

[in] context Pointer to the MLD node context

Returns: TRUE if additional retransmissions are needed, else FALSE

Definition at line 1171 of file mld_node_misc.c.

◆ mldNodeMatchGroup()

bool_t mldNodeMatchGroup	(	MldNodeGroup *	group,
		const Ipv6Addr *	multicastAddr
	)

Check whether a group matches a given multicast address.

Parameters

[in]	group	Pointer to the multicast group
[in]	multicastAddr	IPv6 multicast address

Returns: TRUE if the group matches the specified multicast address, else FALSE

Definition at line 1397 of file mld_node_misc.c.

◆ mldNodeMergeReports()

void mldNodeMergeReports	(	MldNodeGroup *	group,
		IpFilterMode	newFilterMode,
		const Ipv6SrcAddrList *	newFilter
	)

Merge difference the report and the pending report.

Parameters

[in]	group	Pointer to the multicast group
[in]	newFilterMode	New filter mode for the affected group
[in]	newFilter	New interface state for the affected group

Definition at line 1076 of file mld_node_misc.c.

◆ mldNodeProcessListenerQuery()

void mldNodeProcessListenerQuery	(	MldNodeContext *	context,
		const Ipv6PseudoHeader *	pseudoHeader,
		const MldMessage *	message,
		size_t	length
	)

Process incoming Multicast Listener Query message.

Parameters

[in]	context	Pointer to the MLD node context
[in]	pseudoHeader	IPv6 pseudo header
[in]	message	Pointer to the incoming MLD message
[in]	length	Length of the MLD message, in bytes

Definition at line 747 of file mld_node_misc.c.

◆ mldNodeProcessListenerQueryV2()

void mldNodeProcessListenerQueryV2	(	MldNodeContext *	context,
		const Ipv6PseudoHeader *	pseudoHeader,
		const MldListenerQueryV2 *	message,
		size_t	length
	)

Process incoming Version 2 Multicast Listener Query message.

Parameters

[in]	context	Pointer to the MLD node context
[in]	pseudoHeader	IPv6 pseudo header
[in]	message	Pointer to the incoming MLD message
[in]	length	Length of the MLD message, in bytes

Definition at line 839 of file mld_node_misc.c.

◆ mldNodeProcessListenerReport()

void mldNodeProcessListenerReport	(	MldNodeContext *	context,
		const Ipv6PseudoHeader *	pseudoHeader,
		const MldMessage *	message,
		size_t	length
	)

Process incoming Multicast Listener Report message.

Parameters

[in]	context	Pointer to the MLD node context
[in]	pseudoHeader	IPv6 pseudo header
[in]	message	Pointer to the incoming MLD message
[in]	length	Length of the MLD message, in bytes

Definition at line 1034 of file mld_node_misc.c.

◆ mldNodeProcessMessage()

void mldNodeProcessMessage	(	MldNodeContext *	context,
		const Ipv6PseudoHeader *	pseudoHeader,
		const MldMessage *	message,
		size_t	length
	)

Process incoming MLD message.

Parameters

[in]	context	Pointer to the MLD node context
[in]	pseudoHeader	IPv6 pseudo header
[in]	message	Pointer to the incoming MLD message
[in]	length	Length of the MLD message, in bytes

Definition at line 701 of file mld_node_misc.c.

◆ mldNodeRemoveSrcAddr()

void mldNodeRemoveSrcAddr	(	MldNodeSrcAddrList *	list,
		const Ipv6Addr *	srcAddr
	)

Remove a source address from a given list.

Parameters

[in]	list	Pointer to the list of source addresses
[in]	srcAddr	Source address to be removed

Definition at line 1527 of file mld_node_misc.c.

◆ mldNodeSendCurrentStateReport()

void mldNodeSendCurrentStateReport	(	MldNodeContext *	context,
		const Ipv6Addr *	groupAddr
	)

Send Current-State Report message.

Parameters

[in]	context	Pointer to the MLD node context
[in]	groupAddr	IPv6 address specifying the group address

Definition at line 223 of file mld_node_misc.c.

◆ mldNodeSendListenerDone()

void mldNodeSendListenerDone	(	MldNodeContext *	context,
		const Ipv6Addr *	groupAddr
	)

Send Multicast Listener Done message.

Parameters

[in]	context	Pointer to the MLD node context
[in]	groupAddr	IPv6 address specifying the multicast address being left

Definition at line 183 of file mld_node_misc.c.

◆ mldNodeSendListenerReport()

void mldNodeSendListenerReport	(	MldNodeContext *	context,
		const Ipv6Addr *	groupAddr
	)

Send Multicast Listener Report message.

Parameters

[in]	context	Pointer to the MLD node context
[in]	groupAddr	IPv6 address specifying the multicast address

Definition at line 144 of file mld_node_misc.c.

◆ mldNodeSendStateChangeReport()

void mldNodeSendStateChangeReport	(	MldNodeContext *	context,
		const Ipv6Addr *	groupAddr
	)

Send State-Change Report message.

Parameters

[in]	context	Pointer to the MLD node context
[in]	groupAddr	IPv6 address specifying the group address

Definition at line 453 of file mld_node_misc.c.

◆ mldNodeSendUnsolicitedReport()

void mldNodeSendUnsolicitedReport	(	MldNodeContext *	context,
		const Ipv6Addr *	groupAddr
	)

Send an unsolicited Report message.

Parameters

[in]	context	Pointer to the MLD node context
[in]	groupAddr	IPv6 address specifying the multicast address

Definition at line 108 of file mld_node_misc.c.

Macros

Functions

Detailed Description

License

Macro Definition Documentation

◆ TRACE_LEVEL

Function Documentation

◆ mldNodeAddSrcAddr()

◆ mldNodeChangeCompatibilityMode()

◆ mldNodeCreateGroup()

◆ mldNodeDecGroupRetransmitCounters()

◆ mldNodeDeleteGroup()

◆ mldNodeFindGroup()

◆ mldNodeFindSrcAddr()

◆ mldNodeFlushReportRecords()

◆ mldNodeFlushUnusedGroups()

◆ mldNodeGetGroupRetransmitStatus()

◆ mldNodeGetRetransmitStatus()

◆ mldNodeMatchGroup()

◆ mldNodeMergeReports()

◆ mldNodeProcessListenerQuery()

◆ mldNodeProcessListenerQueryV2()

◆ mldNodeProcessListenerReport()

◆ mldNodeProcessMessage()

◆ mldNodeRemoveSrcAddr()

◆ mldNodeSendCurrentStateReport()

◆ mldNodeSendListenerDone()

◆ mldNodeSendListenerReport()

◆ mldNodeSendStateChangeReport()

◆ mldNodeSendUnsolicitedReport()