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Annotation of embedaddon/mtr/packet/probe_unix.h, revision 1.1

1.1     ! misho       1: /*
        !             2:     mtr  --  a network diagnostic tool
        !             3:     Copyright (C) 2016  Matt Kimball
        !             4: 
        !             5:     This program is free software; you can redistribute it and/or modify
        !             6:     it under the terms of the GNU General Public License version 2 as
        !             7:     published by the Free Software Foundation.
        !             8: 
        !             9:     This program is distributed in the hope that it will be useful,
        !            10:     but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            11:     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            12:     GNU General Public License for more details.
        !            13: 
        !            14:     You should have received a copy of the GNU General Public License
        !            15:     along with this program; if not, write to the Free Software
        !            16:     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
        !            17: */
        !            18: 
        !            19: #ifndef PROBE_UNIX_H
        !            20: #define PROBE_UNIX_H
        !            21: 
        !            22: /*  The range of local port numbers to use for probes  */
        !            23: #define MIN_PORT 33000
        !            24: #define MAX_PORT 65535
        !            25: 
        !            26: /*  We need to track the transmission and timeouts on Unix systems  */
        !            27: struct probe_platform_t {
        !            28:     /*  The socket for the outgoing connection  (used by TCP probes)  */
        !            29:     int socket;
        !            30: 
        !            31:     /*  The time at which the probe is considered lost  */
        !            32:     struct timeval timeout_time;
        !            33: 
        !            34:     /*  The time at which the probe was sent  */
        !            35:     struct timeval departure_time;
        !            36: };
        !            37: 
        !            38: /*  We'll use rack sockets to send and recieve probes on Unix systems  */
        !            39: struct net_state_platform_t {
        !            40:     /*  true if we were successful at opening IPv4 sockets  */
        !            41:     bool ip4_present;
        !            42: 
        !            43:     /*  true if we were successful at opening IPv6 sockets  */
        !            44:     bool ip6_present;
        !            45: 
        !            46:     /*  Socket used to send raw IPv4 packets  */
        !            47:     int ip4_send_socket;
        !            48: 
        !            49:     /*  Socket used to receive IPv4 ICMP replies  */
        !            50:     int ip4_recv_socket;
        !            51: 
        !            52:     /*  Send socket for ICMPv6 packets  */
        !            53:     int icmp6_send_socket;
        !            54: 
        !            55:     /*  Send socket for UDPv6 packets  */
        !            56:     int udp6_send_socket;
        !            57: 
        !            58:     /*  Receive socket for IPv6 packets  */
        !            59:     int ip6_recv_socket;
        !            60: 
        !            61:     /*
        !            62:        true if we should encode the IP header length in host order.
        !            63:        (as opposed to network order)
        !            64:      */
        !            65:     bool ip_length_host_order;
        !            66: 
        !            67:     /*  true if the operating system supports SCTP sockets  */
        !            68:     bool sctp_support;
        !            69: 
        !            70:     /*  The next port number to use when creating a new probe  */
        !            71:     int next_sequence;
        !            72: };
        !            73: 
        !            74: struct net_state_t;
        !            75: struct probe_t;
        !            76: struct mpls_label_t;
        !            77: 
        !            78: void set_socket_nonblocking(
        !            79:     int socket);
        !            80: 
        !            81: void receive_probe(
        !            82:     struct net_state_t *net_state,
        !            83:     struct probe_t *probe,
        !            84:     int icmp_type,
        !            85:     const struct sockaddr_storage *remote_addr,
        !            86:     struct timeval *timestamp,
        !            87:     int mpls_count,
        !            88:     struct mpls_label_t *mpls);
        !            89: 
        !            90: int gather_probe_sockets(
        !            91:     const struct net_state_t *net_state,
        !            92:     fd_set * write_set);
        !            93: 
        !            94: #endif