source: mainline/uspace/srv/net/inetsrv/inetping6.c@ b8b1adb1

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since b8b1adb1 was feeac0d, checked in by Jiri Svoboda <jiri@…>, 12 years ago

Simplify use of list_foreach.
  • Property mode set to 100644
File size: 7.5 KB
Line 
1/*
2 * Copyright (c) 2013 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 inet
30 * @{
31 */
32/**
33 * @file
34 * @brief
35 */
36
37#include <async.h>
38#include <errno.h>
39#include <fibril_synch.h>
40#include <io/log.h>
41#include <ipc/inet.h>
42#include <loc.h>
43#include <stdlib.h>
44#include <sys/types.h>
45#include <net/socket_codes.h>
46#include "icmpv6.h"
47#include "icmpv6_std.h"
48#include "inetsrv.h"
49#include "inetping6.h"
50
51static FIBRIL_MUTEX_INITIALIZE(client_list_lock);
52static LIST_INITIALIZE(client_list);
53
54/** Last used session identifier. Protected by @c client_list_lock */
55static uint16_t inetping6_ident = 0;
56
57static int inetping6_send(inetping6_client_t *client, inetping6_sdu_t *sdu)
58{
59 return icmpv6_ping_send(client->ident, sdu);
60}
61
62static int inetping6_get_srcaddr(inetping6_client_t *client, addr128_t remote,
63 addr128_t *local)
64{
65 inet_addr_t remote_addr;
66 inet_addr_set6(remote, &remote_addr);
67
68 inet_addr_t local_addr;
69 int rc = inet_get_srcaddr(&remote_addr, ICMPV6_TOS, &local_addr);
70 if (rc != EOK)
71 return rc;
72
73 uint16_t family = inet_addr_get(&local_addr, NULL, local);
74 if (family != AF_INET6)
75 return EINVAL;
76
77 return EOK;
78}
79
80static inetping6_client_t *inetping6_client_find(uint16_t ident)
81{
82 fibril_mutex_lock(&client_list_lock);
83
84 list_foreach(client_list, client_list, inetping6_client_t, client) {
85 if (client->ident == ident) {
86 fibril_mutex_unlock(&client_list_lock);
87 return client;
88 }
89 }
90
91 fibril_mutex_unlock(&client_list_lock);
92 return NULL;
93}
94
95int inetping6_recv(uint16_t ident, inetping6_sdu_t *sdu)
96{
97 inetping6_client_t *client = inetping6_client_find(ident);
98 if (client == NULL) {
99 log_msg(LOG_DEFAULT, LVL_DEBUG, "Unknown ICMP ident. Dropping.");
100 return ENOENT;
101 }
102
103 async_exch_t *exch = async_exchange_begin(client->sess);
104
105 ipc_call_t answer;
106 aid_t req = async_send_1(exch, INETPING6_EV_RECV, sdu->seq_no, &answer);
107
108 int rc = async_data_write_start(exch, sdu->src, sizeof(addr128_t));
109 if (rc != EOK) {
110 async_exchange_end(exch);
111 async_forget(req);
112 return rc;
113 }
114
115 rc = async_data_write_start(exch, sdu->dest, sizeof(addr128_t));
116 if (rc != EOK) {
117 async_exchange_end(exch);
118 async_forget(req);
119 return rc;
120 }
121
122 rc = async_data_write_start(exch, sdu->data, sdu->size);
123
124 async_exchange_end(exch);
125
126 if (rc != EOK) {
127 async_forget(req);
128 return rc;
129 }
130
131 sysarg_t retval;
132 async_wait_for(req, &retval);
133
134 return (int) retval;
135}
136
137static void inetping6_send_srv(inetping6_client_t *client, ipc_callid_t iid,
138 ipc_call_t *icall)
139{
140 log_msg(LOG_DEFAULT, LVL_DEBUG, "inetping6_send_srv()");
141
142 inetping6_sdu_t sdu;
143
144 sdu.seq_no = IPC_GET_ARG1(*icall);
145
146 ipc_callid_t callid;
147 size_t size;
148 if (!async_data_write_receive(&callid, &size)) {
149 async_answer_0(callid, EREFUSED);
150 async_answer_0(iid, EREFUSED);
151 return;
152 }
153
154 if (size != sizeof(addr128_t)) {
155 async_answer_0(callid, EINVAL);
156 async_answer_0(iid, EINVAL);
157 return;
158 }
159
160 int rc = async_data_write_finalize(callid, &sdu.src, size);
161 if (rc != EOK) {
162 async_answer_0(callid, rc);
163 async_answer_0(iid, rc);
164 return;
165 }
166
167 if (!async_data_write_receive(&callid, &size)) {
168 async_answer_0(callid, EREFUSED);
169 async_answer_0(iid, EREFUSED);
170 return;
171 }
172
173 if (size != sizeof(addr128_t)) {
174 async_answer_0(callid, EINVAL);
175 async_answer_0(iid, EINVAL);
176 return;
177 }
178
179 rc = async_data_write_finalize(callid, &sdu.dest, size);
180 if (rc != EOK) {
181 async_answer_0(callid, rc);
182 async_answer_0(iid, rc);
183 return;
184 }
185
186 rc = async_data_write_accept((void **) &sdu.data, false, 0, 0, 0,
187 &sdu.size);
188 if (rc != EOK) {
189 async_answer_0(iid, rc);
190 return;
191 }
192
193 rc = inetping6_send(client, &sdu);
194 free(sdu.data);
195
196 async_answer_0(iid, rc);
197}
198
199static void inetping6_get_srcaddr_srv(inetping6_client_t *client,
200 ipc_callid_t iid, ipc_call_t *icall)
201{
202 log_msg(LOG_DEFAULT, LVL_DEBUG, "inetping6_get_srcaddr_srv()");
203
204 ipc_callid_t callid;
205 size_t size;
206 if (!async_data_write_receive(&callid, &size)) {
207 async_answer_0(callid, EREFUSED);
208 async_answer_0(iid, EREFUSED);
209 return;
210 }
211
212 if (size != sizeof(addr128_t)) {
213 async_answer_0(callid, EINVAL);
214 async_answer_0(iid, EINVAL);
215 return;
216 }
217
218 addr128_t remote;
219 int rc = async_data_write_finalize(callid, &remote, size);
220 if (rc != EOK) {
221 async_answer_0(callid, rc);
222 async_answer_0(iid, rc);
223 return;
224 }
225
226 addr128_t local;
227 rc = inetping6_get_srcaddr(client, remote, &local);
228 if (rc != EOK) {
229 async_answer_0(iid, rc);
230 return;
231 }
232
233 if (!async_data_read_receive(&callid, &size)) {
234 async_answer_0(callid, EREFUSED);
235 async_answer_0(iid, EREFUSED);
236 return;
237 }
238
239 if (size != sizeof(addr128_t)) {
240 async_answer_0(callid, EINVAL);
241 async_answer_0(iid, EINVAL);
242 return;
243 }
244
245 rc = async_data_read_finalize(callid, &local, size);
246 if (rc != EOK)
247 async_answer_0(callid, rc);
248
249 async_answer_0(iid, rc);
250}
251
252static int inetping6_client_init(inetping6_client_t *client)
253{
254 async_sess_t *sess = async_callback_receive(EXCHANGE_SERIALIZE);
255 if (sess == NULL)
256 return ENOMEM;
257
258 client->sess = sess;
259 link_initialize(&client->client_list);
260
261 fibril_mutex_lock(&client_list_lock);
262 client->ident = ++inetping6_ident;
263 list_append(&client->client_list, &client_list);
264 fibril_mutex_unlock(&client_list_lock);
265
266 return EOK;
267}
268
269static void inetping6_client_fini(inetping6_client_t *client)
270{
271 async_hangup(client->sess);
272 client->sess = NULL;
273
274 fibril_mutex_lock(&client_list_lock);
275 list_remove(&client->client_list);
276 fibril_mutex_unlock(&client_list_lock);
277}
278
279void inetping6_conn(ipc_callid_t iid, ipc_call_t *icall, void *arg)
280{
281 log_msg(LOG_DEFAULT, LVL_DEBUG, "inetping6_conn()");
282
283 /* Accept the connection */
284 async_answer_0(iid, EOK);
285
286 inetping6_client_t client;
287 int rc = inetping6_client_init(&client);
288 if (rc != EOK)
289 return;
290
291 while (true) {
292 ipc_call_t call;
293 ipc_callid_t callid = async_get_call(&call);
294 sysarg_t method = IPC_GET_IMETHOD(call);
295
296 if (!method) {
297 /* The other side has hung up */
298 async_answer_0(callid, EOK);
299 break;
300 }
301
302 switch (method) {
303 case INETPING6_SEND:
304 inetping6_send_srv(&client, callid, &call);
305 break;
306 case INETPING6_GET_SRCADDR:
307 inetping6_get_srcaddr_srv(&client, callid, &call);
308 break;
309 default:
310 async_answer_0(callid, EINVAL);
311 }
312 }
313
314 inetping6_client_fini(&client);
315}
316
317/** @}
318 */
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