Helper functions for IPv6. More...

#include "core/net.h"
#include "ipv6/ipv6.h"
#include "ipv6/ipv6_multicast.h"
#include "ipv6/ipv6_misc.h"
#include "ipv6/ndp.h"
#include "ipv6/ndp_cache.h"
#include "mdns/mdns_responder.h"
#include "mibs/ip_mib_module.h"
#include "debug.h"

Macros
#define	TRACE_LEVEL IPV6_TRACE_LEVEL

Functions
void	ipv6ChangeAddrState (Ipv6AddrEntry *entry, Ipv6AddrState newState)
	Update IPv6 address state. More...

Ipv6AddrState	ipv6GetAddrState (NetInterface interface, const Ipv6Addr addr)
	Get the state of the specified IPv6 address. More...

error_t	ipv6SetAddr (NetInterface interface, uint_t index, const Ipv6Addr addr, Ipv6AddrState state, systime_t validLifetime, systime_t preferredLifetime, bool_t permanent)
	Set IPv6 address and address state. More...

void	ipv6AddAddr (NetInterface interface, const Ipv6Addr addr, uint32_t validLifetime, uint32_t preferredLifetime)
	Add a new entry to the list of IPv6 addresses. More...

void	ipv6RemoveAddr (NetInterface interface, const Ipv6Addr addr)
	Remove an entry from the list of IPv6 addresses. More...

void	ipv6AddPrefix (NetInterface interface, const Ipv6Addr prefix, uint_t length, bool_t onLinkFlag, bool_t autonomousFlag, uint32_t validLifetime, uint32_t preferredLifetime)
	Add a new entry to the Prefix List. More...

void	ipv6RemovePrefix (NetInterface interface, const Ipv6Addr prefix, uint_t length)
	Remove an entry from the Prefix List. More...

void	ipv6AddDefaultRouter (NetInterface interface, const Ipv6Addr addr, uint16_t lifetime, uint8_t preference)
	Add a new entry to the Default Router List. More...

void	ipv6RemoveDefaultRouter (NetInterface interface, const Ipv6Addr addr)
	Remove an entry from the Default Router List. More...

void	ipv6FlushAddrList (NetInterface *interface)
	Flush the list of IPv6 addresses. More...

void	ipv6FlushPrefixList (NetInterface *interface)
	Flush the Prefix List. More...

void	ipv6FlushDefaultRouterList (NetInterface *interface)
	Flush the Default Router List. More...

void	ipv6FlushDnsServerList (NetInterface *interface)
	Flush the list of DNS servers. More...

error_t	ipv6CheckSourceAddr (NetInterface interface, const Ipv6Addr ipAddr)
	Source IPv6 address filtering. More...

error_t	ipv6CheckDestAddr (NetInterface interface, const Ipv6Addr ipAddr)
	Destination IPv6 address filtering. More...

error_t	ipv6SelectSourceAddr (NetInterface *interface, const Ipv6Addr destAddr, Ipv6Addr *srcAddr)
	IPv6 source address selection. More...

bool_t	ipv6IsOnLink (NetInterface interface, const Ipv6Addr ipAddr)
	Check whether an IPv6 address is on-link. More...

bool_t	ipv6IsAnycastAddr (NetInterface interface, const Ipv6Addr ipAddr)
	Check whether an IPv6 address is an anycast address. More...

bool_t	ipv6IsTentativeAddr (NetInterface interface, const Ipv6Addr ipAddr)
	Check whether an IPv6 address is a tentative address. More...

bool_t	ipv6IsLocalHostAddr (const Ipv6Addr *ipAddr)
	Check whether the specified IPv6 is assigned to the host. More...

bool_t	ipv6CompPrefix (const Ipv6Addr ipAddr1, const Ipv6Addr ipAddr2, size_t length)
	Compare IPv6 address prefixes. More...

uint_t	ipv6GetAddrScope (const Ipv6Addr *ipAddr)
	Retrieve the scope of an IPv6 address. More...

uint_t	ipv6GetMulticastAddrScope (const Ipv6Addr *ipAddr)
	Retrieve the scope of an IPv6 multicast address. More...

uint_t	ipv6GetCommonPrefixLength (const Ipv6Addr ipAddr1, const Ipv6Addr ipAddr2)
	Compute the length of the longest common prefix. More...

error_t	ipv6ComputeSolicitedNodeAddr (const Ipv6Addr ipAddr, Ipv6Addr solicitedNodeAddr)
	Form a solicited-node address from an IPv6 address. More...

void	ipv6GenerateLinkLocalAddr (const Eui64 interfaceId, Ipv6Addr ipAddr)
	Generate a IPv6 link-local address from an interface identifier. More...

void	ipv6UpdateInStats (NetInterface interface, const Ipv6Addr destIpAddr, size_t length)
	Update IPv6 input statistics. More...

void	ipv6UpdateOutStats (NetInterface interface, const Ipv6Addr destIpAddr, size_t length)
	Update IPv6 output statistics. More...

Detailed Description

Helper functions for IPv6.

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: 2.5.4

Definition in file ipv6_misc.c.

Macro Definition Documentation

◆ TRACE_LEVEL

#define TRACE_LEVEL IPV6_TRACE_LEVEL

Definition at line 32 of file ipv6_misc.c.

Function Documentation

◆ ipv6AddAddr()

void ipv6AddAddr	(	NetInterface *	interface,
		const Ipv6Addr *	addr,
		uint32_t	validLifetime,
		uint32_t	preferredLifetime
	)

Add a new entry to the list of IPv6 addresses.

Parameters

[in]	interface	Underlying network interface
[in]	addr	IPv6 address
[in]	validLifetime	Valid lifetime, in seconds
[in]	preferredLifetime	Preferred lifetime, in seconds

Definition at line 242 of file ipv6_misc.c.

◆ ipv6AddDefaultRouter()

void ipv6AddDefaultRouter	(	NetInterface *	interface,
		const Ipv6Addr *	addr,
		uint16_t	lifetime,
		uint8_t	preference
	)

Add a new entry to the Default Router List.

Parameters

[in]	interface	Underlying network interface
[in]	addr	IPv6 address of the router
[in]	lifetime	Router lifetime, in seconds
[in]	preference	Preference value

Definition at line 561 of file ipv6_misc.c.

◆ ipv6AddPrefix()

void ipv6AddPrefix	(	NetInterface *	interface,
		const Ipv6Addr *	prefix,
		uint_t	length,
		bool_t	onLinkFlag,
		bool_t	autonomousFlag,
		uint32_t	validLifetime,
		uint32_t	preferredLifetime
	)

Add a new entry to the Prefix List.

Parameters

[in]	interface	Underlying network interface
[in]	prefix	IPv6 prefix
[in]	length	The number of leading bits in the prefix that are valid
[in]	onLinkFlag	On-link flag
[in]	autonomousFlag	Autonomous flag
[in]	validLifetime	Valid lifetime, in seconds
[in]	preferredLifetime	Preferred lifetime, in seconds

Definition at line 401 of file ipv6_misc.c.

◆ ipv6ChangeAddrState()

void ipv6ChangeAddrState	(	Ipv6AddrEntry *	entry,
		Ipv6AddrState	newState
	)

Update IPv6 address state.

Parameters

[in]	entry	Pointer to an IPv6 address entry
[in]	newState	New state to switch to

Definition at line 55 of file ipv6_misc.c.

◆ ipv6CheckDestAddr()

error_t ipv6CheckDestAddr	(	NetInterface *	interface,
		const Ipv6Addr *	ipAddr
	)

Destination IPv6 address filtering.

Parameters

[in]	interface	Underlying network interface
[in]	ipAddr	Destination IPv6 address to be checked

Returns: Error code

Definition at line 815 of file ipv6_misc.c.

◆ ipv6CheckSourceAddr()

error_t ipv6CheckSourceAddr	(	NetInterface *	interface,
		const Ipv6Addr *	ipAddr
	)

Source IPv6 address filtering.

Parameters

[in]	interface	Underlying network interface
[in]	ipAddr	Source IPv6 address to be checked

Returns: Error code

Definition at line 792 of file ipv6_misc.c.

◆ ipv6CompPrefix()

bool_t ipv6CompPrefix	(	const Ipv6Addr *	ipAddr1,
		const Ipv6Addr *	ipAddr2,
		size_t	length
	)

Compare IPv6 address prefixes.

Parameters

[in]	ipAddr1	Pointer to the first IPv6 address
[in]	ipAddr2	Pointer to the second IPv6 address
[in]	length	Prefix length

Returns: TRUE if the prefixes match each other, else FALSE

Definition at line 1217 of file ipv6_misc.c.

◆ ipv6ComputeSolicitedNodeAddr()

error_t ipv6ComputeSolicitedNodeAddr	(	const Ipv6Addr *	ipAddr,
		Ipv6Addr *	solicitedNodeAddr
	)

Form a solicited-node address from an IPv6 address.

Parameters

[in]	ipAddr	Unicast or anycast address
[out]	solicitedNodeAddr	Corresponding solicited-node address

Returns: Error code

Definition at line 1386 of file ipv6_misc.c.

◆ ipv6FlushAddrList()

void ipv6FlushAddrList ( NetInterface * interface )

Flush the list of IPv6 addresses.

Parameters

[in] interface Underlying network interface

Definition at line 682 of file ipv6_misc.c.

◆ ipv6FlushDefaultRouterList()

void ipv6FlushDefaultRouterList ( NetInterface * interface )

Flush the Default Router List.

Parameters

[in] interface Underlying network interface

Definition at line 745 of file ipv6_misc.c.

◆ ipv6FlushDnsServerList()

void ipv6FlushDnsServerList ( NetInterface * interface )

Flush the list of DNS servers.

Parameters

[in] interface Underlying network interface

Definition at line 777 of file ipv6_misc.c.

◆ ipv6FlushPrefixList()

void ipv6FlushPrefixList ( NetInterface * interface )

Flush the Prefix List.

Parameters

[in] interface Underlying network interface

Definition at line 713 of file ipv6_misc.c.

◆ ipv6GenerateLinkLocalAddr()

void ipv6GenerateLinkLocalAddr	(	const Eui64 *	interfaceId,
		Ipv6Addr *	ipAddr
	)

Generate a IPv6 link-local address from an interface identifier.

Parameters

[in]	interfaceId	Interface identifier
[out]	ipAddr	Corresponding IPv6 link-local address

Definition at line 1423 of file ipv6_misc.c.

◆ ipv6GetAddrScope()

uint_t ipv6GetAddrScope ( const Ipv6Addr * ipAddr )

Retrieve the scope of an IPv6 address.

Parameters

[in] ipAddr Pointer to an IPv6 address

Returns: IPv6 address scope

Definition at line 1262 of file ipv6_misc.c.

◆ ipv6GetAddrState()

Ipv6AddrState ipv6GetAddrState	(	NetInterface *	interface,
		const Ipv6Addr *	addr
	)

Get the state of the specified IPv6 address.

Parameters

[in]	interface	Underlying network interface
[in]	addr	IPv6 address

Returns: Address state

Definition at line 77 of file ipv6_misc.c.

◆ ipv6GetCommonPrefixLength()

uint_t ipv6GetCommonPrefixLength	(	const Ipv6Addr *	ipAddr1,
		const Ipv6Addr *	ipAddr2
	)

Compute the length of the longest common prefix.

Parameters

[in]	ipAddr1	Pointer to the first IPv6 address
[in]	ipAddr2	Pointer to the second IPv6 address

Returns: The length of the longest common prefix, in bits

Definition at line 1336 of file ipv6_misc.c.

◆ ipv6GetMulticastAddrScope()

uint_t ipv6GetMulticastAddrScope ( const Ipv6Addr * ipAddr )

Retrieve the scope of an IPv6 multicast address.

Parameters

[in] ipAddr Pointer to an IPv6 multicast address

Returns: IPv6 address scope

Definition at line 1309 of file ipv6_misc.c.

◆ ipv6IsAnycastAddr()

bool_t ipv6IsAnycastAddr	(	NetInterface *	interface,
		const Ipv6Addr *	ipAddr
	)

Check whether an IPv6 address is an anycast address.

Parameters

[in]	interface	Underlying network interface
[in]	ipAddr	IPv6 address to be checked

Returns: TRUE if the IPv6 address is an anycast address, else FALSE

Definition at line 1085 of file ipv6_misc.c.

◆ ipv6IsLocalHostAddr()

bool_t ipv6IsLocalHostAddr ( const Ipv6Addr * ipAddr )

Check whether the specified IPv6 is assigned to the host.

Parameters

[in] ipAddr IPv6 address to be checked

Returns: TRUE if the IPv6 address matches any address assigned to the host, else FALSE

Definition at line 1157 of file ipv6_misc.c.

◆ ipv6IsOnLink()

bool_t ipv6IsOnLink	(	NetInterface *	interface,
		const Ipv6Addr *	ipAddr
	)

Check whether an IPv6 address is on-link.

Parameters

[in]	interface	Underlying network interface
[in]	ipAddr	IPv6 address to be checked

Returns: TRUE if the IPv6 address is on-link, else FALSE

Definition at line 1041 of file ipv6_misc.c.

◆ ipv6IsTentativeAddr()

bool_t ipv6IsTentativeAddr	(	NetInterface *	interface,
		const Ipv6Addr *	ipAddr
	)

Check whether an IPv6 address is a tentative address.

Parameters

[in]	interface	Underlying network interface
[in]	ipAddr	IPv6 address to be checked

Returns: TRUE if the IPv6 address is a tentative address, else FALSE

Definition at line 1121 of file ipv6_misc.c.

◆ ipv6RemoveAddr()

void ipv6RemoveAddr	(	NetInterface *	interface,
		const Ipv6Addr *	addr
	)

Remove an entry from the list of IPv6 addresses.

Parameters

[in]	interface	Underlying network interface
[in]	addr	IPv6 address

Definition at line 360 of file ipv6_misc.c.

◆ ipv6RemoveDefaultRouter()

void ipv6RemoveDefaultRouter	(	NetInterface *	interface,
		const Ipv6Addr *	addr
	)

Remove an entry from the Default Router List.

Parameters

[in]	interface	Underlying network interface
[in]	addr	IPv6 address of the router to be removed from the list

Definition at line 628 of file ipv6_misc.c.

◆ ipv6RemovePrefix()

void ipv6RemovePrefix	(	NetInterface *	interface,
		const Ipv6Addr *	prefix,
		uint_t	length
	)

Remove an entry from the Prefix List.

Parameters

[in]	interface	Underlying network interface
[in]	prefix	IPv6 prefix
[in]	length	The number of leading bits in the prefix that are valid

Definition at line 516 of file ipv6_misc.c.

◆ ipv6SelectSourceAddr()

error_t ipv6SelectSourceAddr	(	NetInterface **	interface,
		const Ipv6Addr *	destAddr,
		Ipv6Addr *	srcAddr
	)

IPv6 source address selection.

This function selects the source address and the relevant network interface to be used in order to join the specified destination address

Parameters

[in,out]	interface	A pointer to a valid network interface may be provided as a hint. The function returns a pointer identifying the interface to be used
[in]	destAddr	Destination IPv6 address
[out]	srcAddr	Local IPv6 address to be used

Returns: Error code

Definition at line 891 of file ipv6_misc.c.

◆ ipv6SetAddr()

error_t ipv6SetAddr	(	NetInterface *	interface,
		uint_t	index,
		const Ipv6Addr *	addr,
		Ipv6AddrState	state,
		systime_t	validLifetime,
		systime_t	preferredLifetime,
		bool_t	permanent
	)

Set IPv6 address and address state.

Parameters

[in]	interface	Pointer to the desired network interface
[in]	index	Zero-based index
[in]	addr	IPv6 address
[in]	state	State of the IPv6 address
[in]	validLifetime	Valid lifetime
[in]	preferredLifetime	Preferred lifetime
[in]	permanent	Permanently assigned address

Returns: Error code

Definition at line 117 of file ipv6_misc.c.

◆ ipv6UpdateInStats()

void ipv6UpdateInStats	(	NetInterface *	interface,
		const Ipv6Addr *	destIpAddr,
		size_t	length
	)

Update IPv6 input statistics.

Parameters

[in]	interface	Underlying network interface
[in]	destIpAddr	Destination IP address
[in]	length	Length of the incoming IP packet

Definition at line 1445 of file ipv6_misc.c.

◆ ipv6UpdateOutStats()

void ipv6UpdateOutStats	(	NetInterface *	interface,
		const Ipv6Addr *	destIpAddr,
		size_t	length
	)

Update IPv6 output statistics.

Parameters

[in]	interface	Underlying network interface
[in]	destIpAddr	Destination IP address
[in]	length	Length of the outgoing IP packet

Definition at line 1473 of file ipv6_misc.c.

Macros

Functions

Detailed Description

License

Macro Definition Documentation

◆ TRACE_LEVEL

Function Documentation

◆ ipv6AddAddr()

◆ ipv6AddDefaultRouter()

◆ ipv6AddPrefix()

◆ ipv6ChangeAddrState()

◆ ipv6CheckDestAddr()

◆ ipv6CheckSourceAddr()

◆ ipv6CompPrefix()

◆ ipv6ComputeSolicitedNodeAddr()

◆ ipv6FlushAddrList()

◆ ipv6FlushDefaultRouterList()

◆ ipv6FlushDnsServerList()

◆ ipv6FlushPrefixList()

◆ ipv6GenerateLinkLocalAddr()

◆ ipv6GetAddrScope()

◆ ipv6GetAddrState()

◆ ipv6GetCommonPrefixLength()

◆ ipv6GetMulticastAddrScope()

◆ ipv6IsAnycastAddr()

◆ ipv6IsLocalHostAddr()

◆ ipv6IsOnLink()

◆ ipv6IsTentativeAddr()

◆ ipv6RemoveAddr()

◆ ipv6RemoveDefaultRouter()

◆ ipv6RemovePrefix()

◆ ipv6SelectSourceAddr()

◆ ipv6SetAddr()

◆ ipv6UpdateInStats()

◆ ipv6UpdateOutStats()