source: mainline/uspace/srv/net/netif/netif.c@ aadf01e

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since aadf01e was aadf01e, checked in by Lukas Mejdrech <lukasmejdrech@…>, 15 years ago

Coding style (no functional change)
  • Property mode set to 100644
File size: 8.4 KB
Line 
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)){
164 return EBADMEM;
165 }
166 fibril_rwlock_read_lock(&netif_globals.lock);
167 if(! ERROR_OCCURRED(netif_get_addr_message(device_id, &translation))){
168 *address = measured_string_copy(&translation);
169 ERROR_CODE = (*address) ? EOK : ENOMEM;
170 }
171 fibril_rwlock_read_unlock(&netif_globals.lock);
172 *data = (** address).value;
173 return ERROR_CODE;
174}
175
176int netif_bind_service(services_t service, device_id_t device_id, services_t me, async_client_conn_t receiver){
177 return EOK;
178}
179
180int find_device(device_id_t device_id, device_ref * device){
181 if(! device){
182 return EBADMEM;
183 }
184 *device = device_map_find(&netif_globals.device_map, device_id);
185 if(! * device){
186 return ENOENT;
187 }
188 if((** device).state == NETIF_NULL) return EPERM;
189 return EOK;
190}
191
192void null_device_stats(device_stats_ref stats){
193 bzero(stats, sizeof(device_stats_t));
194}
195
196int register_message(device_id_t device_id, int phone){
197 ERROR_DECLARE;
198
199 device_ref device;
200
201 ERROR_PROPAGATE(find_device(device_id, &device));
202 if(device->nil_phone > 0){
203 return ELIMIT;
204 }
205 device->nil_phone = phone;
206 printf("New receiver of the device %d registered:\n\tphone\t= %d\n", device->device_id, device->nil_phone);
207 return EOK;
208}
209
210int netif_message(ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count){
211 ERROR_DECLARE;
212
213 size_t length;
214 device_stats_t stats;
215 packet_t packet;
216 measured_string_t address;
217
218// printf("message %d - %d\n", IPC_GET_METHOD(*call), NET_NETIF_FIRST);
219 *answer_count = 0;
220 switch(IPC_GET_METHOD(*call)){
221 case IPC_M_PHONE_HUNGUP:
222 return EOK;
223 case NET_NETIF_PROBE:
224 return netif_probe_req(0, IPC_GET_DEVICE(call), NETIF_GET_IRQ(call), NETIF_GET_IO(call));
225 case IPC_M_CONNECT_TO_ME:
226 fibril_rwlock_write_lock(&netif_globals.lock);
227 ERROR_CODE = register_message(IPC_GET_DEVICE(call), IPC_GET_PHONE(call));
228 fibril_rwlock_write_unlock(&netif_globals.lock);
229 return ERROR_CODE;
230 case NET_NETIF_SEND:
231 ERROR_PROPAGATE(packet_translate(netif_globals.net_phone, &packet, IPC_GET_PACKET(call)));
232 return netif_send_msg(0, IPC_GET_DEVICE(call), packet, IPC_GET_SENDER(call));
233 case NET_NETIF_START:
234 return netif_start_req(0, IPC_GET_DEVICE(call));
235 case NET_NETIF_STATS:
236 fibril_rwlock_read_lock(&netif_globals.lock);
237 if(! ERROR_OCCURRED(async_data_read_receive(&callid, &length))){
238 if(length < sizeof(device_stats_t)){
239 ERROR_CODE = EOVERFLOW;
240 }else{
241 if(! ERROR_OCCURRED(netif_get_device_stats(IPC_GET_DEVICE(call), &stats))){
242 ERROR_CODE = async_data_read_finalize(callid, &stats, sizeof(device_stats_t));
243 }
244 }
245 }
246 fibril_rwlock_read_unlock(&netif_globals.lock);
247 return ERROR_CODE;
248 case NET_NETIF_STOP:
249 return netif_stop_req(0, IPC_GET_DEVICE(call));
250 case NET_NETIF_GET_ADDR:
251 fibril_rwlock_read_lock(&netif_globals.lock);
252 if(! ERROR_OCCURRED(netif_get_addr_message(IPC_GET_DEVICE(call), &address))){
253 ERROR_CODE = measured_strings_reply(&address, 1);
254 }
255 fibril_rwlock_read_unlock(&netif_globals.lock);
256 return ERROR_CODE;
257 }
258 return netif_specific_message(callid, call, answer, answer_count);
259}
260
261int netif_init_module(async_client_conn_t client_connection){
262 ERROR_DECLARE;
263
264 async_set_client_connection(client_connection);
265 netif_globals.net_phone = connect_to_service(SERVICE_NETWORKING);
266 device_map_initialize(&netif_globals.device_map);
267 ERROR_PROPAGATE(pm_init());
268 fibril_rwlock_initialize(&netif_globals.lock);
269 if(ERROR_OCCURRED(netif_initialize())){
270 pm_destroy();
271 return ERROR_CODE;
272 }
273 return EOK;
274}
275
276int netif_run_module(void){
277 async_manager();
278
279 pm_destroy();
280 return EOK;
281}
282
283void netif_pq_release(packet_id_t packet_id){
284 pq_release(netif_globals.net_phone, packet_id);
285}
286
287packet_t netif_packet_get_1(size_t content){
288 return packet_get_1(netif_globals.net_phone, content);
289}
290
291/** @}
292 */
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