IPv6 version of ICMP, as per RFC 4443.
#include "lwip/opt.h"
#include "lwip/icmp6.h"
#include "lwip/ip6.h"
#include "lwip/ip6_addr.h"
#include "lwip/inet_chksum.h"
#include "lwip/pbuf.h"
#include "lwip/netif.h"
#include "lwip/nd6.h"
#include "lwip/mld6.h"
#include "lwip/ip.h"
#include "lwip/stats.h"
#include <string.h>
Functions | |
void | icmp6_dest_unreach (struct pbuf *p, enum icmp6_dur_code c) |
Send an icmpv6 'destination unreachable' packet. More... | |
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... | |
static void | icmp6_send_response (struct pbuf *p, u8_t code, u32_t data, u8_t type) |
Send an ICMPv6 packet in response to an incoming packet. More... | |
void | icmp6_time_exceeded (struct pbuf *p, enum icmp6_te_code c) |
Send an icmpv6 'time exceeded' packet. More... | |
void icmp6_dest_unreach | ( | struct pbuf * | p, |
enum icmp6_dur_code | c | ||
) |
Send an icmpv6 'destination unreachable' packet.
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.
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.
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().
Send an icmpv6 'packet too big' packet.
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.
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().
Send an ICMPv6 packet in response to an incoming packet.
p | the input packet for which the response should be sent, p->payload pointing to the IPv6 header |
code | Code of the ICMPv6 header |
data | Additional 32-bit parameter in the ICMPv6 header |
type | Type of the ICMPv6 header |
References ICMP6_STATS_INC, ICMP6_TE_FRAG, ICMP6_TYPE_TE, ICMP_DEBUG, ip6_addr_copy, ip6_chksum_pseudo(), ip6_current_src_addr, IP6_HLEN, IP6_NEXTH_ICMP6, ip6_output_if(), ip6_route(), ip6_select_source_address(), ip_current_netif, pbuf::len, LWIP_ASSERT, LWIP_DEBUGF, NULL, pbuf::payload, pbuf_alloc(), pbuf_free(), PBUF_IP, PBUF_RAM, and pbuf::tot_len.
Referenced by icmp6_dest_unreach(), icmp6_packet_too_big(), icmp6_param_problem(), and icmp6_time_exceeded().
void icmp6_time_exceeded | ( | struct pbuf * | p, |
enum icmp6_te_code | c | ||
) |
Send an icmpv6 'time exceeded' packet.
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().