source: mainline/uspace/srv/net/netif/netif.c@ 5e18892

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 5e18892 was 21580dd, checked in by Lukas Mejdrech <lukas@…>, 16 years ago

Merged with network branch ​svn://svn.helenos.org/HelenOS/branches/network revision 4759; ipc_share_* and ipc_data_* changed to async_*; client connection in module.c returns on IPC_M_PHONE_HUNGUP; * Qemu scripts renamed to net-qe.*; (the dp8390 does not respond)
  • Property mode set to 100644
File size: 8.7 KB
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1/*
2 * Copyright (c) 2009 Lukas Mejdrech
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 netif
30 * @{
31 */
32
33/** @file
34 * Network interface module skeleton implementation.
35 * @see netif.h
36 */
37
38#include <async.h>
39#include <mem.h>
40#include <fibril_synch.h>
41#include <stdio.h>
42
43#include <ipc/ipc.h>
44#include <ipc/services.h>
45
46#include "../err.h"
47#include "../messages.h"
48#include "../modules.h"
49
50#include "../structures/packet/packet.h"
51#include "../structures/packet/packet_client.h"
52#include "../structures/measured_strings.h"
53
54#include "../include/device.h"
55#include "../include/netif_interface.h"
56#include "../include/nil_interface.h"
57
58#include "netif.h"
59#include "netif_messages.h"
60#include "netif_module.h"
61
62/** Network interface module global data.
63 */
64extern netif_globals_t netif_globals;
65
66DEVICE_MAP_IMPLEMENT( device_map, device_t )
67
68/** @name Message processing functions
69 */
70/*@{*/
71
72/** Registers the device notification receiver, the network interface layer module.
73 * @param[in] device_id The device identifier.
74 * @param[in] phone The network interface layer module phone.
75 * @returns EOK on success.
76 * @returns ENOENT if there is no such device.
77 * @returns ELIMIT if there is another module registered.
78 */
79int register_message( device_id_t device_id, int phone );
80
81/*@}*/
82
83int netif_probe_req( int netif_phone, device_id_t device_id, int irq, int io ){
84 int result;
85
86 fibril_rwlock_write_lock( & netif_globals.lock );
87 result = netif_probe_message( device_id, irq, io );
88 fibril_rwlock_write_unlock( & netif_globals.lock );
89 return result;
90}
91
92int netif_send_msg( int netif_phone, device_id_t device_id, packet_t packet, services_t sender ){
93 int result;
94
95 fibril_rwlock_write_lock( & netif_globals.lock );
96 result = netif_send_message( device_id, packet, sender );
97 fibril_rwlock_write_unlock( & netif_globals.lock );
98 return result;
99}
100
101int netif_start_req( int netif_phone, device_id_t device_id ){
102 ERROR_DECLARE;
103
104 device_ref device;
105 int result;
106 int phone;
107
108 fibril_rwlock_write_lock( & netif_globals.lock );
109 if( ERROR_OCCURRED( find_device( device_id, & device ))){
110 fibril_rwlock_write_unlock( & netif_globals.lock );
111 return ERROR_CODE;
112 }
113 result = netif_start_message( device );
114 if( result > NETIF_NULL ){
115 phone = device->nil_phone;
116 fibril_rwlock_write_unlock( & netif_globals.lock );
117 nil_device_state_msg( phone, device_id, result );
118 return EOK;
119 }else{
120 fibril_rwlock_write_unlock( & netif_globals.lock );
121 }
122 return result;
123}
124
125int netif_stop_req( int netif_phone, device_id_t device_id ){
126 ERROR_DECLARE;
127
128 device_ref device;
129 int result;
130 int phone;
131
132 fibril_rwlock_write_lock( & netif_globals.lock );
133 if( ERROR_OCCURRED( find_device( device_id, & device ))){
134 fibril_rwlock_write_unlock( & netif_globals.lock );
135 return ERROR_CODE;
136 }
137 result = netif_stop_message( device );
138 if( result > NETIF_NULL ){
139 phone = device->nil_phone;
140 fibril_rwlock_write_unlock( & netif_globals.lock );
141 nil_device_state_msg( phone, device_id, result );
142 return EOK;
143 }else{
144 fibril_rwlock_write_unlock( & netif_globals.lock );
145 }
146 return result;
147}
148
149int netif_stats_req( int netif_phone, device_id_t device_id, device_stats_ref stats ){
150 int res;
151
152 fibril_rwlock_read_lock( & netif_globals.lock );
153 res = netif_get_device_stats( device_id, stats );
154 fibril_rwlock_read_unlock( & netif_globals.lock );
155 return res;
156}
157
158int netif_get_addr_req( int netif_phone, device_id_t device_id, measured_string_ref * address, char ** data ){
159 ERROR_DECLARE;
160
161 measured_string_t translation;
162
163 if( !( address && data )) return EBADMEM;
164 fibril_rwlock_read_lock( & netif_globals.lock );
165 if( ! ERROR_OCCURRED( netif_get_addr_message( device_id, & translation ))){
166 * address = measured_string_copy( & translation );
167 ERROR_CODE = ( * address ) ? EOK : ENOMEM;
168 }
169 fibril_rwlock_read_unlock( & netif_globals.lock );
170 * data = ( ** address ).value;
171 return ERROR_CODE;
172}
173
174int netif_bind_service( services_t service, device_id_t device_id, services_t me, async_client_conn_t receiver ){
175 return EOK;
176}
177
178int find_device( device_id_t device_id, device_ref * device ){
179 if( ! device ) return EBADMEM;
180 * device = device_map_find( & netif_globals.device_map, device_id );
181 if( ! * device ) return ENOENT;
182 if(( ** device ).state == NETIF_NULL ) return EPERM;
183 return EOK;
184}
185
186void null_device_stats( device_stats_ref stats ){
187 bzero( stats, sizeof( device_stats_t ));
188}
189
190int register_message( device_id_t device_id, int phone ){
191 ERROR_DECLARE;
192
193 device_ref device;
194
195 ERROR_PROPAGATE( find_device( device_id, & device ));
196 if( device->nil_phone > 0 ) return ELIMIT;
197 device->nil_phone = phone;
198 printf( "New receiver of the device %d registered:\n\tphone\t= %d\n", device->device_id, device->nil_phone );
199 return EOK;
200}
201
202int netif_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){
203 ERROR_DECLARE;
204
205 size_t length;
206 device_stats_t stats;
207 packet_t packet;
208 measured_string_t address;
209
210// printf( "message %d - %d\n", IPC_GET_METHOD( * call ), NET_NETIF_FIRST );
211 * answer_count = 0;
212 switch( IPC_GET_METHOD( * call )){
213 case IPC_M_PHONE_HUNGUP:
214 return EOK;
215 case NET_NETIF_PROBE:
216 return netif_probe_req( 0, IPC_GET_DEVICE( call ), NETIF_GET_IRQ( call ), NETIF_GET_IO( call ));
217 case IPC_M_CONNECT_TO_ME:
218 fibril_rwlock_write_lock( & netif_globals.lock );
219 ERROR_CODE = register_message( IPC_GET_DEVICE( call ), IPC_GET_PHONE( call ));
220 fibril_rwlock_write_unlock( & netif_globals.lock );
221 return ERROR_CODE;
222 case NET_NETIF_SEND:
223 ERROR_PROPAGATE( packet_translate( netif_globals.net_phone, & packet, IPC_GET_PACKET( call )));
224 return netif_send_msg( 0, IPC_GET_DEVICE( call ), packet, IPC_GET_SENDER( call ));
225 case NET_NETIF_START:
226 return netif_start_req( 0, IPC_GET_DEVICE( call ));
227 case NET_NETIF_STATS:
228 fibril_rwlock_read_lock( & netif_globals.lock );
229 if( ! ERROR_OCCURRED( async_data_read_receive( & callid, & length ))){
230 if( length < sizeof( device_stats_t )){
231 ERROR_CODE = EOVERFLOW;
232 }else{
233 if( ! ERROR_OCCURRED( netif_get_device_stats( IPC_GET_DEVICE( call ), & stats ))){
234 ERROR_CODE = async_data_read_finalize( callid, & stats, sizeof( device_stats_t ));
235 }
236 }
237 }
238 fibril_rwlock_read_unlock( & netif_globals.lock );
239 return ERROR_CODE;
240 case NET_NETIF_STOP:
241 return netif_stop_req( 0, IPC_GET_DEVICE( call ));
242 case NET_NETIF_GET_ADDR:
243 fibril_rwlock_read_lock( & netif_globals.lock );
244 if( ! ERROR_OCCURRED( netif_get_addr_message( IPC_GET_DEVICE( call ), & address ))){
245 ERROR_CODE = measured_strings_reply( & address, 1 );
246 }
247 fibril_rwlock_read_unlock( & netif_globals.lock );
248 return ERROR_CODE;
249 }
250 return netif_specific_message( callid, call, answer, answer_count );
251}
252
253int netif_init_module( async_client_conn_t client_connection ){
254 ERROR_DECLARE;
255
256 async_set_client_connection( client_connection );
257 netif_globals.net_phone = connect_to_service( SERVICE_NETWORKING );
258 device_map_initialize( & netif_globals.device_map );
259 ERROR_PROPAGATE( pm_init());
260 fibril_rwlock_initialize( & netif_globals.lock );
261 if( ERROR_OCCURRED( netif_initialize())){
262 pm_destroy();
263 return ERROR_CODE;
264 }
265 return EOK;
266}
267
268int netif_run_module( void ){
269 async_manager();
270
271 pm_destroy();
272 return EOK;
273}
274
275void netif_pq_release( packet_id_t packet_id ){
276 pq_release( netif_globals.net_phone, packet_id );
277}
278
279packet_t netif_packet_get_1( size_t content ){
280 return packet_get_1( netif_globals.net_phone, content );
281}
282
283/** @}
284 */
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