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Annotation of embedaddon/mtr/packet/probe_unix.h, revision 1.1.1.2

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: 
1.1.1.2 ! misho      14:     You should have received a copy of the GNU General Public License along
        !            15:     with this program; if not, write to the Free Software Foundation, Inc.,
        !            16:     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
1.1       misho      17: */
                     18: 
                     19: #ifndef PROBE_UNIX_H
                     20: #define PROBE_UNIX_H
                     21: 
1.1.1.2 ! misho      22: #ifndef IPPROTO_SCTP
        !            23: // Needed for Netbsd. 
        !            24: #define IPPROTO_SCTP           132             /* SCTP */
        !            25: #endif
        !            26: 
1.1       misho      27: /*  The range of local port numbers to use for probes  */
                     28: #define MIN_PORT 33000
                     29: #define MAX_PORT 65535
                     30: 
                     31: /*  We need to track the transmission and timeouts on Unix systems  */
                     32: struct probe_platform_t {
                     33:     /*  The socket for the outgoing connection  (used by TCP probes)  */
                     34:     int socket;
                     35: 
                     36:     /*  The time at which the probe is considered lost  */
                     37:     struct timeval timeout_time;
                     38: 
                     39:     /*  The time at which the probe was sent  */
                     40:     struct timeval departure_time;
                     41: };
                     42: 
1.1.1.2 ! misho      43: /*  We'll use rack sockets to send and receive probes on Unix systems  */
1.1       misho      44: struct net_state_platform_t {
                     45:     /*  true if we were successful at opening IPv4 sockets  */
                     46:     bool ip4_present;
                     47: 
                     48:     /*  true if we were successful at opening IPv6 sockets  */
                     49:     bool ip6_present;
                     50: 
1.1.1.2 ! misho      51:     /* true if ipv4 socket is raw socket */
        !            52:     bool ip4_socket_raw;
        !            53: 
        !            54:     /* true if ipv6 socket is raw socket */
        !            55:     bool ip6_socket_raw;
        !            56: 
1.1       misho      57:     /*  Socket used to send raw IPv4 packets  */
                     58:     int ip4_send_socket;
                     59: 
                     60:     /*  Socket used to receive IPv4 ICMP replies  */
                     61:     int ip4_recv_socket;
                     62: 
1.1.1.2 ! misho      63:     /*  Socket used to probe byte order */
        !            64:     int ip4_tmp_icmp_socket;
        !            65: 
        !            66:     /*  Socket used to tx & rx non-raw IPv4 icmp packets */
        !            67:     int ip4_txrx_icmp_socket;
        !            68: 
        !            69:     /*  Socket used to send IPv4 udp packets and receive icmp err packets */
        !            70:     int ip4_txrx_udp_socket;
        !            71: 
1.1       misho      72:     /*  Send socket for ICMPv6 packets  */
                     73:     int icmp6_send_socket;
                     74: 
                     75:     /*  Send socket for UDPv6 packets  */
                     76:     int udp6_send_socket;
                     77: 
                     78:     /*  Receive socket for IPv6 packets  */
                     79:     int ip6_recv_socket;
                     80: 
1.1.1.2 ! misho      81:     /*  Socket used to tx & rx non-raw IPv6 icmp packets */
        !            82:     int ip6_txrx_icmp_socket;
        !            83: 
        !            84:     /*  Socket used to send IPv6 udp packets and receive icmp err packets */
        !            85:     int ip6_txrx_udp_socket;
        !            86: 
1.1       misho      87:     /*
                     88:        true if we should encode the IP header length in host order.
                     89:        (as opposed to network order)
                     90:      */
                     91:     bool ip_length_host_order;
                     92: 
                     93:     /*  true if the operating system supports SCTP sockets  */
                     94:     bool sctp_support;
                     95: 
                     96:     /*  The next port number to use when creating a new probe  */
                     97:     int next_sequence;
                     98: };
                     99: 
                    100: struct net_state_t;
                    101: struct probe_t;
                    102: struct mpls_label_t;
                    103: 
                    104: void set_socket_nonblocking(
                    105:     int socket);
                    106: 
                    107: void receive_probe(
                    108:     struct net_state_t *net_state,
                    109:     struct probe_t *probe,
                    110:     int icmp_type,
                    111:     const struct sockaddr_storage *remote_addr,
                    112:     struct timeval *timestamp,
                    113:     int mpls_count,
                    114:     struct mpls_label_t *mpls);
                    115: 
                    116: int gather_probe_sockets(
                    117:     const struct net_state_t *net_state,
                    118:     fd_set * write_set);
                    119: 
                    120: #endif