| 1 | /*
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| 2 | * Copyright (c) 2011 Martin Decky
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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 | * Network interface layer module skeleton implementation.
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| 35 | * @see nil_skel.h
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| 36 | */
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| 37 |
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| 38 | #include <bool.h>
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| 39 | #include <errno.h>
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| 40 | #include <ns.h>
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| 41 | #include <nil_skel.h>
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| 42 | #include <net_interface.h>
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| 43 | #include <net/modules.h>
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| 44 |
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| 45 | /** Default thread for new connections.
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| 46 | *
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| 47 | * @param[in] iid The initial message identifier.
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| 48 | * @param[in] icall The initial message call structure.
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| 49 | *
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| 50 | */
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| 51 | static void nil_client_connection(ipc_callid_t iid, ipc_call_t *icall,
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| 52 | void *arg)
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| 53 | {
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| 54 | /*
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| 55 | * Accept the connection by answering
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| 56 | * the initial IPC_M_CONNECT_ME_TO call.
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| 57 | */
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| 58 | async_answer_0(iid, EOK);
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| 59 |
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| 60 | while (true) {
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| 61 | ipc_call_t answer;
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| 62 | size_t count;
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| 63 |
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| 64 | /* Clear the answer structure */
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| 65 | refresh_answer(&answer, &count);
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| 66 |
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| 67 | /* Fetch the next message */
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| 68 | ipc_call_t call;
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| 69 | ipc_callid_t callid = async_get_call(&call);
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| 70 |
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| 71 | /* Process the message */
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| 72 | int res = nil_module_message(callid, &call, &answer,
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| 73 | &count);
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| 74 |
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| 75 | /*
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| 76 | * End if told to either by the message or the processing
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| 77 | * result.
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| 78 | */
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| 79 | if ((!IPC_GET_IMETHOD(call)) || (res == EHANGUP))
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| 80 | return;
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| 81 |
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| 82 | /* Answer the message */
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| 83 | answer_call(callid, res, &answer, count);
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| 84 | }
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| 85 | }
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| 86 |
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| 87 | /** Start the network interface layer module.
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| 88 | *
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| 89 | * Initialize the client connection serving function, initialize
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| 90 | * the module, register the module service and start the async
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| 91 | * manager, processing IPC messages in an infinite loop.
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| 92 | *
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| 93 | * @param[in] service Service identification.
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| 94 | *
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| 95 | * @return EOK on success.
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| 96 | * @return Other error codes as defined for the pm_init() function.
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| 97 | * @return Other error codes as defined for the nil_initialize()
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| 98 | * function.
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| 99 | *
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| 100 | */
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| 101 | int nil_module_start(sysarg_t service)
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| 102 | {
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| 103 | async_set_client_connection(nil_client_connection);
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| 104 | async_sess_t *sess = net_connect_module();
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| 105 | if (!sess)
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| 106 | return ENOENT;
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| 107 |
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| 108 | int rc = pm_init();
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| 109 | if (rc != EOK)
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| 110 | return rc;
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| 111 |
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| 112 | rc = nil_initialize(sess);
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| 113 | if (rc != EOK)
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| 114 | goto out;
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| 115 |
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| 116 | rc = service_register(service);
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| 117 | if (rc != EOK)
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| 118 | goto out;
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| 119 |
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| 120 | async_manager();
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| 121 |
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| 122 | out:
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| 123 | pm_destroy();
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| 124 | return rc;
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| 125 | }
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| 126 |
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| 127 | /** @}
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| 128 | */
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