| 1 | /*
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| 2 | * Copyright (c) 2009 Lukas Mejdrech
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup libnet
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| 30 | * @{
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| 31 | */
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| 32 |
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| 33 | /** @file
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| 34 | * Socket common core.
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| 35 | */
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| 36 |
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| 37 | #ifndef LIBNET_SOCKET_CORE_H_
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| 38 | #define LIBNET_SOCKET_CORE_H_
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| 39 |
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| 40 | #include <sys/types.h>
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| 41 | #include <adt/generic_char_map.h>
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| 42 | #include <adt/dynamic_fifo.h>
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| 43 | #include <adt/int_map.h>
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| 44 | #include <net/in.h>
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| 45 | #include <net/device.h>
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| 46 | #include <async.h>
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| 47 |
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| 48 | /** Initial size of the received packet queue. */
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| 49 | #define SOCKET_INITIAL_RECEIVED_SIZE 4
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| 50 |
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| 51 | /** Maximum size of the received packet queue. */
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| 52 | #define SOCKET_MAX_RECEIVED_SIZE 0
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| 53 |
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| 54 | /** Initial size of the sockets for acceptance queue. */
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| 55 | #define SOCKET_INITIAL_ACCEPTED_SIZE 1
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| 56 |
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| 57 | /** Maximum size of the sockets for acceptance queue. */
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| 58 | #define SOCKET_MAX_ACCEPTEDED_SIZE 0
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| 59 |
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| 60 | /** Listening sockets' port map key. */
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| 61 | #define SOCKET_MAP_KEY_LISTENING "L"
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| 62 |
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| 63 | /** Type definition of the socket core.
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| 64 | * @see socket_core
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| 65 | */
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| 66 | typedef struct socket_core socket_core_t;
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| 67 |
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| 68 | /** Type definition of the socket port.
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| 69 | * @see socket_port
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| 70 | */
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| 71 | typedef struct socket_port socket_port_t;
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| 72 |
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| 73 | /** Socket core. */
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| 74 | struct socket_core {
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| 75 | /** Socket identifier. */
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| 76 | int socket_id;
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| 77 | /** Client application session. */
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| 78 | async_sess_t *sess;
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| 79 | /** Bound port. */
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| 80 | int port;
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| 81 | /** Sockets for acceptance queue. */
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| 82 | dyn_fifo_t accepted;
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| 83 | /** Protocol specific data. */
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| 84 | void *specific_data;
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| 85 | /** Socket ports map key. */
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| 86 | const uint8_t *key;
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| 87 | /** Length of the Socket ports map key. */
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| 88 | size_t key_length;
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| 89 | };
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| 90 |
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| 91 | /** Sockets map.
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| 92 | * The key is the socket identifier.
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| 93 | */
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| 94 | INT_MAP_DECLARE(socket_cores, socket_core_t);
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| 95 |
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| 96 | /** Bount port sockets map.
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| 97 | *
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| 98 | * The listening socket has the SOCKET_MAP_KEY_LISTENING key identifier whereas
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| 99 | * the other use the remote addresses.
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| 100 | */
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| 101 | GENERIC_CHAR_MAP_DECLARE(socket_port_map, socket_core_t *);
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| 102 |
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| 103 | /** Ports map.
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| 104 | * The key is the port number.
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| 105 | */
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| 106 | INT_MAP_DECLARE(socket_ports, socket_port_t);
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| 107 |
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| 108 | extern void socket_cores_release(async_sess_t *, socket_cores_t *,
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| 109 | socket_ports_t *, void (*)(socket_core_t *));
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| 110 | extern int socket_bind(socket_cores_t *, socket_ports_t *, int, void *, size_t,
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| 111 | int, int, int);
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| 112 | extern int socket_bind_free_port(socket_ports_t *, socket_core_t *, int, int,
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| 113 | int);
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| 114 | extern int socket_create(socket_cores_t *, async_sess_t *, void *, int *);
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| 115 | extern int socket_destroy(async_sess_t *, int, socket_cores_t *,
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| 116 | socket_ports_t *, void (*)(socket_core_t *));
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| 117 | extern socket_core_t *socket_port_find(socket_ports_t *, int, const uint8_t *,
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| 118 | size_t);
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| 119 | extern void socket_port_release(socket_ports_t *, socket_core_t *);
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| 120 | extern int socket_port_add(socket_ports_t *, int, socket_core_t *,
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| 121 | const uint8_t *, size_t);
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| 122 |
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| 123 | #endif
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| 124 |
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| 125 | /** @}
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| 126 | */
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