icmp6.h File Reference

IPv6 version of ICMP, as per RFC 4443.

#include "lwip/opt.h"
#include "lwip/pbuf.h"
#include "lwip/ip6_addr.h"
#include "lwip/netif.h"

Data Structures
struct	icmp6_echo_hdr
	This is the ICMP6 header adapted for echo req/resp. More...
struct	icmp6_hdr
	This is the standard ICMP6 header. More...

Enumerations
enum	icmp6_dur_code {   ICMP6_DUR_NO_ROUTE = 0,   ICMP6_DUR_PROHIBITED = 1,   ICMP6_DUR_SCOPE = 2,   ICMP6_DUR_ADDRESS = 3,   ICMP6_DUR_PORT = 4,   ICMP6_DUR_POLICY = 5,   ICMP6_DUR_REJECT_ROUTE = 6 }
enum	icmp6_pp_code {   ICMP6_PP_FIELD = 0,   ICMP6_PP_HEADER = 1,   ICMP6_PP_OPTION = 2 }
enum	icmp6_te_code {   ICMP6_TE_HL = 0,   ICMP6_TE_FRAG = 1 }
enum	icmp6_type {   ICMP6_TYPE_DUR = 1,   ICMP6_TYPE_PTB = 2,   ICMP6_TYPE_TE = 3,   ICMP6_TYPE_PP = 4,   ICMP6_TYPE_PE1 = 100,   ICMP6_TYPE_PE2 = 101,   ICMP6_TYPE_RSV_ERR = 127,   ICMP6_TYPE_EREQ = 128,   ICMP6_TYPE_EREP = 129,   ICMP6_TYPE_MLQ = 130,   ICMP6_TYPE_MLR = 131,   ICMP6_TYPE_MLD = 132,   ICMP6_TYPE_RS = 133,   ICMP6_TYPE_RA = 134,   ICMP6_TYPE_NS = 135,   ICMP6_TYPE_NA = 136,   ICMP6_TYPE_RD = 137,   ICMP6_TYPE_MRA = 151,   ICMP6_TYPE_MRS = 152,   ICMP6_TYPE_MRT = 153,   ICMP6_TYPE_PE3 = 200,   ICMP6_TYPE_PE4 = 201,   ICMP6_TYPE_RSV_INF = 255 }

Functions
void	icmp6_dest_unreach (struct pbuf *p, enum icmp6_dur_code c)
	Send an icmpv6 'destination unreachable' packet. More...
PACK_STRUCT_END void	icmp6_input (struct pbuf *p, struct netif *inp)
	Process an input ICMPv6 message. More...
void	icmp6_packet_too_big (struct pbuf *p, u32_t mtu)
	Send an icmpv6 'packet too big' packet. More...
void	icmp6_param_problem (struct pbuf *p, enum icmp6_pp_code c, u32_t pointer)
	Send an icmpv6 'parameter problem' packet. More...
void	icmp6_time_exceeded (struct pbuf *p, enum icmp6_te_code c)
	Send an icmpv6 'time exceeded' packet. More...

Variables
PACK_STRUCT_BEGIN struct icmp6_hdr	PACK_STRUCT_STRUCT

enum icmp6_dur_code

Enumerator
ICMP6_DUR_NO_ROUTE
ICMP6_DUR_PROHIBITED
ICMP6_DUR_SCOPE
ICMP6_DUR_ADDRESS
ICMP6_DUR_PORT
ICMP6_DUR_POLICY
ICMP6_DUR_REJECT_ROUTE

enum icmp6_pp_code

Enumerator
ICMP6_PP_FIELD
ICMP6_PP_HEADER
ICMP6_PP_OPTION

enum icmp6_te_code

Enumerator
ICMP6_TE_HL
ICMP6_TE_FRAG

enum icmp6_type

Enumerator
ICMP6_TYPE_DUR
ICMP6_TYPE_PTB
ICMP6_TYPE_TE
ICMP6_TYPE_PP
ICMP6_TYPE_PE1
ICMP6_TYPE_PE2
ICMP6_TYPE_RSV_ERR
ICMP6_TYPE_EREQ
ICMP6_TYPE_EREP
ICMP6_TYPE_MLQ
ICMP6_TYPE_MLR
ICMP6_TYPE_MLD
ICMP6_TYPE_RS
ICMP6_TYPE_RA
ICMP6_TYPE_NS
ICMP6_TYPE_NA
ICMP6_TYPE_RD
ICMP6_TYPE_MRA
ICMP6_TYPE_MRS
ICMP6_TYPE_MRT
ICMP6_TYPE_PE3
ICMP6_TYPE_PE4
ICMP6_TYPE_RSV_INF

void icmp6_dest_unreach	(	struct pbuf *	p,
		enum icmp6_dur_code	c
	)

Send an icmpv6 'destination unreachable' packet.

Parameters

p	the input packet for which the 'unreachable' should be sent, p->payload pointing to the IPv6 header
c	ICMPv6 code for the unreachable type

References icmp6_send_response(), and ICMP6_TYPE_DUR.

PACK_STRUCT_END void icmp6_input	(	struct pbuf *	p,
		struct netif *	inp
	)

Process an input ICMPv6 message.

Called by ip6_input.

Will generate a reply for echo requests. Other messages are forwarded to nd6_input, or mld6_input.

Parameters

p	the mld packet, p->payload pointing to the icmpv6 header
inp	the netif on which this packet was received

References ERR_OK, ICMP6_STATS_INC, ICMP6_TYPE_EREP, ICMP6_TYPE_EREQ, ICMP6_TYPE_MLD, ICMP6_TYPE_MLQ, ICMP6_TYPE_MLR, ICMP6_TYPE_NA, ICMP6_TYPE_NS, ICMP6_TYPE_PTB, ICMP6_TYPE_RA, ICMP6_TYPE_RD, ICMP6_TYPE_RS, if(), ip6_addr_ismulticast, ip6_chksum_pseudo(), ip6_current_dest_addr, ip6_current_src_addr, IP6_NEXTH_ICMP6, ip6_output_if(), ip6_select_source_address(), pbuf::len, mld6_input(), nd6_input(), NULL, pbuf::payload, pbuf_alloc(), pbuf_copy(), pbuf_free(), PBUF_IP, PBUF_RAM, and pbuf::tot_len.

Referenced by ip6_input().

void icmp6_packet_too_big	(	struct pbuf *	p,
		u32_t	mtu
	)

Send an icmpv6 'packet too big' packet.

Parameters

p	the input packet for which the 'packet too big' should be sent, p->payload pointing to the IPv6 header
mtu	the maximum mtu that we can accept

References icmp6_send_response(), and ICMP6_TYPE_PTB.

void icmp6_param_problem	(	struct pbuf *	p,
		enum icmp6_pp_code	c,
		u32_t	pointer
	)

Send an icmpv6 'parameter problem' packet.

Parameters

p	the input packet for which the 'param problem' should be sent, p->payload pointing to the IP header
c	ICMPv6 code for the param problem type
pointer	the pointer to the byte where the parameter is found

References icmp6_send_response(), and ICMP6_TYPE_PP.

Referenced by ip6_input().

void icmp6_time_exceeded	(	struct pbuf *	p,
		enum icmp6_te_code	c
	)

Send an icmpv6 'time exceeded' packet.

Parameters

p	the input packet for which the 'unreachable' should be sent, p->payload pointing to the IPv6 header
c	ICMPv6 code for the time exceeded type

References icmp6_send_response(), and ICMP6_TYPE_TE.

Referenced by ip6_reass_free_complete_datagram().

PACK_STRUCT_END PACK_STRUCT_BEGIN struct icmp6_echo_hdr PACK_STRUCT_STRUCT