ICMP icmpinfo_t Structure

The icmpinfo_t structure is a DTrace translated version of the information contained in the various forms of ICMP and ICMP6 headers.

typedef struct icmpinfo {
        uint8_t icmp_version;
        uint8_t icmp_type;
        uint8_t icmp_code;
        uint16_t icmp_checksum;
        uint32_t icmp_address_mask;     
        uint16_t icmp_echo_id;
        uint16_t icmp_echo_seq;
        uint32_t icmp_param_problem_ptr;
        uint32_t icmp_pmtu_update;
        uint8_t icmp_radv_num_addrs;
        uint16_t icmp_radv_lifetime;
        uint32_t *icmp_radv_addrs;
        string icmp_redirect_gateway;
        uint32_t icmp_timestamp_otime;
        uint32_t icmp_timestamp_rtime;
        uint32_t icmp_timestamp_ttime;
        string icmp6_mld_addr;
        uint8_t icmp6_mld_v2_num_mars;
        uintptr_t icmp6_mld_v2_mars;
        string icmp6_nd_target;
        string icmp6_nd_redirect_destination;
        uint32_t icmp6_nd_radv_reachable;
        uint32_t icmp6_nd_radv_retransmit;
        uint8_t icmp6_rr_segnum;
        uint8_t icmp6_rr_flags;
        uint16_t icmp6_rr_maxdelay;
        /* Original data that triggered ICMP error - NULL/0 if not ICMP error */
        ipha_t *icmp_error_ip_hdr;    /* Orig. IP hdr for ICMP error */
        ip6_t *icmp_error_ip6_hdr;    /* Orig. IPv6 hdr for ICMP error */
        uint16_t icmp_error_sport;
        uint16_t icmp_error_dport;
        struct icmp *icmp_hdr;
        icmp6_t *icmp6_hdr;
} icmpinfo_t;

Table 11-43 List of ICMP icmpinfo_t Members

Member	Description
icmp_type	ICMP/ICMPv6 message type.
icmp_code	ICMP/ICMPv6 message code.
icmp_checksum	Checksum of ICMP header and payload.
icmp_hdr	Pointer to raw ICMP header at the time of tracing.
icmp6_hdr	Pointer to raw ICMPv6 header at the time of tracing.
icmp_address_mask	ICMP address mask reply.
icmp_echo_id	ICMP echo request/response ID.
icmp_echo_seq	ICMP echo request/response sequence number.
icmp_param_problem_ptr	Offset of parameter in original datagram that caused the ICMP/ICMPv6 parameter problem.
icmp_pmtu_update	Path MTU update for ICMP "destination unreachable/needs fragmentation" and ICMPv6 "packet too big".
icmp_radv_num_addrs	Number of ICMP router advertisements to follow.
icmp_radv_lifetime	Lifetime of router advertisements.
icmp_radv_addrs	Pointer to router advertisements.
icmp_redirect_gateway	Gateway for ICMP redirect.
icmp_timestamp_otime	Originating time set in ICMP timestamp request - number of seconds since 0:00 UT.
icmp_timestamp_rtime	Receive time of timestamp request set in ICMP timestamp response.
icmp_timestamp_ttime	Transmit time of timestamp reply sent in response to ICMP timestamp request.
icmp6_mld_addr	ICMP6 Multicast layer discovery address.
icmp6_mld_v2_num_mars	Number of ICMPv6 Multicast Address Records.
icmp6_mld_v2_mars	Pointer to first ICMPv6 Multicast Address Record.
icmp6_nd_target	ICMPv6 neighbor discovery target.
icmp6_nd_redirect_destination	ICMPv6 neighbor discovery redirect destination.
icmp6_nd_radv_reachable	ICMPv6 neighbor discovery router advertisement reachable.
icmp6_nd_radv_retransmit	ICMPv6 neighbor discovery router advertisement.
icmp6_rr_segnum	ICMPv6 router renumbering segment number.
icmp6_rr_flags	ICMPv6 router renumbering flags.
icmp6_rr_maxdelay	ICMPv6 router renumbering maximum delay.
icmp_error_ip_hdr	Original IP hdr for ICMP/ICMPv6 error.
icmp_error_ip6_hdr	Original IPv6 hdr for ICMP/ICMPv6 error.
icmp_error_sport	Original layer 4 source port for ICMP/ICMPv6 error.
icmp_error_dport	Original layer 4 destination port for ICMP/ICMPv6 error.
icmp_hdr	Pointer to original ICMP header, NULL for ICMP6.
icmp6_hdr	Pointer to original ICMPv6 header, NULL for ICMP.

For more information about the various ICMP/ICMPv6 message header formats, see RFC 792, 1256, and 2463.