| 1 | /*
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| 2 | * Copyright (c) 2015 Jiri Svoboda
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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 libc
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #ifndef LIBC_INET_UDP_H_
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| 36 | #define LIBC_INET_UDP_H_
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| 37 |
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| 38 | #include <async.h>
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| 39 | #include <fibril_synch.h>
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| 40 | #include <inet/addr.h>
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| 41 | #include <inet/endpoint.h>
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| 42 | #include <inet/inet.h>
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| 43 | #include <stdbool.h>
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| 44 |
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| 45 | /** UDP link state */
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| 46 | typedef enum {
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| 47 | udp_ls_down,
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| 48 | udp_ls_up
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| 49 | } udp_link_state_t;
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| 50 |
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| 51 | /** UDP received message */
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| 52 | typedef struct {
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| 53 | struct udp *udp;
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| 54 | sysarg_t assoc_id;
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| 55 | size_t size;
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| 56 | inet_ep_t remote_ep;
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| 57 | } udp_rmsg_t;
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| 58 |
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| 59 | /** UDP received error */
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| 60 | typedef struct {
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| 61 | } udp_rerr_t;
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| 62 |
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| 63 | /** UDP association */
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| 64 | typedef struct {
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| 65 | struct udp *udp;
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| 66 | link_t ludp;
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| 67 | sysarg_t id;
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| 68 | struct udp_cb *cb;
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| 69 | void *cb_arg;
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| 70 | } udp_assoc_t;
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| 71 |
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| 72 | /** UDP callbacks */
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| 73 | typedef struct udp_cb {
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| 74 | void (*recv_msg)(udp_assoc_t *, udp_rmsg_t *);
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| 75 | void (*recv_err)(udp_assoc_t *, udp_rerr_t *);
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| 76 | void (*link_state)(udp_assoc_t *, udp_link_state_t);
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| 77 | } udp_cb_t;
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| 78 |
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| 79 | /** UDP service */
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| 80 | typedef struct udp {
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| 81 | /** UDP session */
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| 82 | async_sess_t *sess;
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| 83 | /** List of associations */
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| 84 | list_t assoc; /* of udp_assoc_t */
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| 85 | /** UDP service lock */
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| 86 | fibril_mutex_t lock;
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| 87 | /** For waiting on cb_done */
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| 88 | fibril_condvar_t cv;
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| 89 | /** Set to @a true when callback connection handler has terminated */
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| 90 | bool cb_done;
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| 91 | } udp_t;
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| 92 |
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| 93 | extern int udp_create(udp_t **);
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| 94 | extern void udp_destroy(udp_t *);
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| 95 | extern int udp_assoc_create(udp_t *, inet_ep2_t *, udp_cb_t *, void *,
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| 96 | udp_assoc_t **);
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| 97 | extern void udp_assoc_destroy(udp_assoc_t *);
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| 98 | extern int udp_assoc_send_msg(udp_assoc_t *, inet_ep_t *, void *, size_t);
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| 99 | extern void *udp_assoc_userptr(udp_assoc_t *);
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| 100 | extern size_t udp_rmsg_size(udp_rmsg_t *);
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| 101 | extern int udp_rmsg_read(udp_rmsg_t *, size_t, void *, size_t);
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| 102 | extern void udp_rmsg_remote_ep(udp_rmsg_t *, inet_ep_t *);
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| 103 | extern uint8_t udp_rerr_type(udp_rerr_t *);
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| 104 | extern uint8_t udp_rerr_code(udp_rerr_t *);
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| 105 |
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| 106 | #endif
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| 107 |
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| 108 | /** @}
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| 109 | */
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