source: mainline/uspace/lib/net/il/il_skel.c@ 4a4c8bcf

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 4a4c8bcf was 79ae36dd, checked in by Martin Decky <martin@…>, 14 years ago

new async framework with integrated exchange tracking

  • strict isolation between low-level IPC and high-level async framework with integrated exchange tracking
    • each IPC connection is represented by an async_sess_t structure
    • each IPC exchange is represented by an async_exch_t structure
    • exchange management is either based on atomic messages (EXCHANGE_ATOMIC), locking (EXCHANGE_SERIALIZE) or connection cloning (EXCHANGE_CLONE)
  • async_obsolete: temporary compatibility layer to keep old async clients working (several pieces of code are currently broken, but only non-essential functionality)
  • IPC_M_PHONE_HANGUP is now method no. 0 (for elegant boolean evaluation)
  • IPC_M_DEBUG_ALL has been renamed to IPC_M_DEBUG
  • IPC_M_PING has been removed (VFS protocol now has VFS_IN_PING)
  • console routines in libc have been rewritten for better abstraction
  • additional use for libc-private header files (FILE structure opaque to the client)
  • various cstyle changes (typos, indentation, missing externs in header files, improved comments, etc.)
  • Property mode set to 100644
File size: 3.6 KB
Line 
1/*
2 * Copyright (c) 2011 Martin Decky
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup libnet
30 * @{
31 */
32
33/** @file
34 * Internetworking layer module skeleton implementation.
35 * @see il_skel.h
36 */
37
38#include <bool.h>
39#include <errno.h>
40#include <il_skel.h>
41#include <net_interface.h>
42#include <net/modules.h>
43
44// FIXME: remove this header
45#include <kernel/ipc/ipc_methods.h>
46
47/** Default thread for new connections.
48 *
49 * @param[in] iid The initial message identifier.
50 * @param[in] icall The initial message call structure.
51 *
52 */
53static void il_client_connection(ipc_callid_t iid, ipc_call_t *icall)
54{
55 /*
56 * Accept the connection by answering
57 * the initial IPC_M_CONNECT_ME_TO call.
58 */
59 async_answer_0(iid, EOK);
60
61 while (true) {
62 ipc_call_t answer;
63 size_t count;
64
65 /* Clear the answer structure */
66 refresh_answer(&answer, &count);
67
68 /* Fetch the next message */
69 ipc_call_t call;
70 ipc_callid_t callid = async_get_call(&call);
71
72 /* Process the message */
73 int res = il_module_message(callid, &call, &answer,
74 &count);
75
76 /*
77 * End if told to either by the message or the processing
78 * result.
79 */
80 if ((!IPC_GET_IMETHOD(call)) || (res == EHANGUP))
81 return;
82
83 /* Answer the message */
84 answer_call(callid, res, &answer, count);
85 }
86}
87
88/** Start the internetworking layer module.
89 *
90 * Initialize the client connection serving function, initialize
91 * the module, register the module service and start the async
92 * manager, processing IPC messages in an infinite loop.
93 *
94 * @param[in] service Service identification.
95 *
96 * @return EOK on success.
97 * @return Other error codes as defined for the pm_init() function.
98 * @return Other error codes as defined for the il_initialize()
99 * function.
100 * @return Other error codes as defined for the REGISTER_ME() macro
101 * function.
102 *
103 */
104int il_module_start(int service)
105{
106 async_set_client_connection(il_client_connection);
107 int net_phone = net_connect_module();
108 if (net_phone < 0)
109 return net_phone;
110
111 int rc = pm_init();
112 if (rc != EOK)
113 return rc;
114
115 rc = il_initialize(net_phone);
116 if (rc != EOK)
117 goto out;
118
119 rc = async_connect_to_me(PHONE_NS, service, 0, 0, NULL);
120 if (rc != EOK)
121 goto out;
122
123 async_manager();
124
125out:
126 pm_destroy();
127 return rc;
128}
129
130/** @}
131 */
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