src/stack/icmpv6/icmpv6_ndisc.c File Reference

The file has functions which handle the Neighbour Discovery process as defined in the ICMPv6 Protocol. More...

Functions
int	ICMPv6SendNS (NETIF_DEVICE *ptr_device, IP6N DstAddress, IP6N SrcAddress, IP6N TargetAddress)
int	ICMPv6SendNA (NETIF_DEVICE *ptr_device, IP6N DstAddress, IP6N SrcAddress, IP6N TargetAddress, UINT8 Flags)
int	ICMPv6RecvNS (PBM_Pkt *pPkt, IPV6HDR *ptr_ipv6hdr)
int	ICMPv6RecvNA (PBM_Pkt *pPkt, IPV6HDR *ptr_ipv6hdr)
int	ICMPv6RecvRA (PBM_Pkt *pPkt, IPV6HDR *ptr_ipv6hdr)
int	ICMPv6RecvRedirect (PBM_Pkt *pPkt, IPV6HDR *ptr_ipv6hdr)
int	ICMPv6RecvRS (PBM_Pkt *pPkt, IPV6HDR *ptr_ipv6hdr)
int	ICMPv6SendRS (NETIF_DEVICE *ptr_device, IP6N SrcAddress)

---

Detailed Description

The file has functions which handle the Neighbour Discovery process as defined in the ICMPv6 Protocol.

NOTE: (C) Copyright 2008, Texas Instruments, Inc.

---

Function Documentation

int ICMPv6RecvNA	(	PBM_Pkt *	pPkt,
		IPV6HDR *	ptr_ipv6hdr
	)

Description
The function handles the ICMPv6 Neighbour Advertisment Message

Parameters:

[in]	pPkt	Pointer to the entire ICMPv6 Packet.
[in]	ptr_ipv6hdr	Pointer to the IPv6 Header.

See also:

RFC-2461 Section 7.1.2

Return values:

	0	- Success
	<0	- Error

int ICMPv6RecvNS	(	PBM_Pkt *	pPkt,
		IPV6HDR *	ptr_ipv6hdr
	)

Description
The function handles the ICMPv6 Neighbour Solicitation Message

Parameters:

[in]	pPkt	Pointer to the entire ICMPv6 Packet.
[in]	ptr_ipv6hdr	Pointer to the IPv6 Header.

See also:

RFC-2461 Section 7.1.1, 7.2.3 & 7.2.4.

Return values:

	0	- Success
	<0	- Error

int ICMPv6RecvRA	(	PBM_Pkt *	pPkt,
		IPV6HDR *	ptr_ipv6hdr
	)

Description
The function handles the ICMPv6 Router Advertisment Message

Parameters:

[in]	pPkt	Pointer to the entire ICMPv6 Packet.
[in]	ptr_ipv6hdr	Pointer to the IPv6 Header.

See also:

RFC-2461 Section 6.1

Return values:

	0	- Success
	<0	- Error

int ICMPv6RecvRedirect	(	PBM_Pkt *	pPkt,
		IPV6HDR *	ptr_ipv6hdr
	)

Description
The function handles the ICMPv6 Redirect Message

Parameters:

[in]	pPkt	Pointer to the entire ICMPv6 Packet.
[in]	ptr_ipv6hdr	Pointer to the IPv6 Header.

See also:

RFC-2461 Section 8

Return values:

	0	- Success
	<0	- Error

int ICMPv6RecvRS	(	PBM_Pkt *	pPkt,
		IPV6HDR *	ptr_ipv6hdr
	)

Description
The function handles the ICMPv6 Router Solicitation Message

Parameters:

[in]	pPkt	Pointer to the entire ICMPv6 Packet.
[in]	ptr_ipv6hdr	Pointer to the IPv6 Header.

See also:

RFC-2461 Section 6.1

Return values:

	0	- Success
	<0	- Error

int ICMPv6SendNA	(	NETIF_DEVICE *	ptr_device,
		IP6N	DstAddress,
		IP6N	SrcAddress,
		IP6N	TargetAddress,
		UINT8	Flags
	)

Description
The function is used to send out a Neighbor Advertisment.

This is for *internal* NDK Stack Usage.

Parameters:

[in]	ptr_device	The Network Interface object on which the packet is to be transmitted.
[in]	DstAddress	The destination address to which the NA packet is directed too.
[in]	SrcAddress	The Source address of the interface
[in]	TargetAddress	The Target address to which the NA message is being transmitted.
[in]	Flags	The value of the (R)eserved, (S)olicited and (O)verride flags.

Return values:

	0	- Success
	<0	- Error

int ICMPv6SendNS	(	NETIF_DEVICE *	ptr_device,
		IP6N	DstAddress,
		IP6N	SrcAddress,
		IP6N	TargetAddress
	)

Description
The function is used to send out a Neighbor solicitation

This is for *internal* NDK Stack Usage.

Parameters:

[in]	ptr_device	The Network Interface object on which the packet is to be transmitted.
[in]	DstAddress	The destination address to which the NS packet is directed too. As per RFC 2461; this can either be the Solicted Node Multicast Address or the the target address.
[in]	SrcAddress	The Source address of the interface; this can either be UNSPECIFIED i.e. :: if the NS is being sent for DAD or it will be the address of the source interface.
[in]	TargetAddress	The Target address to which the NS message is being transmitted.

Return values:

	0	- Success
	<0	- Error

int ICMPv6SendRS	(	NETIF_DEVICE *	ptr_device,
		IP6N	SrcAddress
	)

Description
The function is used to send out a Router solicitation. All RS messages are sent to the ALL_ROUTER Destination Address.

This is for *internal* NDK Stack Usage.

Parameters:

[in]	ptr_device	The Network Interface object on which the packet is to be transmitted.
[in]	SrcAddress	The Source address of the interface; this could be set to the UNSPECIFIED address. If the Source address is UNSPECIFIED; the function does not append the SOURCE_LL Option to the RS packet.

Return values:

	0	- Success
	<0	- Error

---

Copyright 2009, Texas Instruments Incorporated