ICMPv6

GNRC's implementation of ICMPv6. More...

Detailed Description

GNRC's implementation of ICMPv6.

See also

RFC 4443

Modules
	ICMPv6 echo messages
	ICMPv6 echo request and reply.
	ICMPv6 error messages
	ICMPv6 error message handling and creation.

Files
file	icmpv6.h
	Definitions for GNRC's ICMPv6 implementation.

Functions
void	gnrc_icmpv6_demux (gnrc_netif_t *netif, gnrc_pktsnip_t *pkt)
	Demultiplexes a received ICMPv6 packet according to its type field.
gnrc_pktsnip_t *	gnrc_icmpv6_build (gnrc_pktsnip_t *next, uint8_t type, uint8_t code, size_t size)
	Builds an ICMPv6 message for sending.
int	gnrc_icmpv6_calc_csum (gnrc_pktsnip_t *hdr, gnrc_pktsnip_t *pseudo_hdr)
	Calculates the checksum for an ICMPv6 packet.

Function Documentation

gnrc_icmpv6_build()

gnrc_pktsnip_t * gnrc_icmpv6_build	(	gnrc_pktsnip_t *	next,
		uint8_t	type,
		uint8_t	code,
		size_t	size
	)

Builds an ICMPv6 message for sending.

Parameters

[in]	next	Next packet snip in the new packet.
[in]	type	Type for the ICMPv6 message.
[in]	code	Code for the ICMPv6 message.
[in]	size	Size of the ICMPv6 message (needs do be > sizeof(icmpv6_hdr_t)).

Returns

The ICMPv6 message on success

NULL, on failure

gnrc_icmpv6_calc_csum()

int gnrc_icmpv6_calc_csum	(	gnrc_pktsnip_t *	hdr,
		gnrc_pktsnip_t *	pseudo_hdr
	)

Calculates the checksum for an ICMPv6 packet.

Parameters

[in]	hdr	The header the checksum should be calculated for.
[in]	pseudo_hdr	The header the pseudo header shall be generated from. NULL if none is needed.

Returns

0, on success.

-EINVAL, if gnrc_pktsnip_t::type of pkt was not GNRC_NETTYPE_ICMPV6

-ENOENT, if gnrc_pktsnip_t::type of pseudo_hdr was not GNRC_NETTYPE_IPV6

gnrc_icmpv6_demux()

void gnrc_icmpv6_demux	(	gnrc_netif_t *	netif,
		gnrc_pktsnip_t *	pkt
	)

Demultiplexes a received ICMPv6 packet according to its type field.

Parameters

[in]	netif	The receiving interface
[in]	pkt	The packet to demultiplex.