source: mainline/uspace/srv/net/inetsrv/inetping6.c@ 13be2583

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 13be2583 was 13be2583, checked in by Jiri Svoboda <jiri@…>, 12 years ago

Client- and server-side definition of inetping[6]_sdu_t can be shared.
  • 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 <types/inetping6.h>
46#include <net/socket_codes.h>
47#include "icmpv6.h"
48#include "icmpv6_std.h"
49#include "inetsrv.h"
50#include "inetping6.h"
51
52static FIBRIL_MUTEX_INITIALIZE(client_list_lock);
53static LIST_INITIALIZE(client_list);
54
55/** Last used session identifier. Protected by @c client_list_lock */
56static uint16_t inetping6_ident = 0;
57
58static int inetping6_send(inetping6_client_t *client, inetping6_sdu_t *sdu)
59{
60 return icmpv6_ping_send(client->ident, sdu);
61}
62
63static int inetping6_get_srcaddr(inetping6_client_t *client, addr128_t remote,
64 addr128_t *local)
65{
66 inet_addr_t remote_addr;
67 inet_addr_set6(remote, &remote_addr);
68
69 inet_addr_t local_addr;
70 int rc = inet_get_srcaddr(&remote_addr, ICMPV6_TOS, &local_addr);
71 if (rc != EOK)
72 return rc;
73
74 uint16_t family = inet_addr_get(&local_addr, NULL, local);
75 if (family != AF_INET6)
76 return EINVAL;
77
78 return EOK;
79}
80
81static inetping6_client_t *inetping6_client_find(uint16_t ident)
82{
83 fibril_mutex_lock(&client_list_lock);
84
85 list_foreach(client_list, client_list, inetping6_client_t, client) {
86 if (client->ident == ident) {
87 fibril_mutex_unlock(&client_list_lock);
88 return client;
89 }
90 }
91
92 fibril_mutex_unlock(&client_list_lock);
93 return NULL;
94}
95
96int inetping6_recv(uint16_t ident, inetping6_sdu_t *sdu)
97{
98 inetping6_client_t *client = inetping6_client_find(ident);
99 if (client == NULL) {
100 log_msg(LOG_DEFAULT, LVL_DEBUG, "Unknown ICMP ident. Dropping.");
101 return ENOENT;
102 }
103
104 async_exch_t *exch = async_exchange_begin(client->sess);
105
106 ipc_call_t answer;
107 aid_t req = async_send_1(exch, INETPING6_EV_RECV, sdu->seq_no, &answer);
108
109 int rc = async_data_write_start(exch, sdu->src, sizeof(addr128_t));
110 if (rc != EOK) {
111 async_exchange_end(exch);
112 async_forget(req);
113 return rc;
114 }
115
116 rc = async_data_write_start(exch, sdu->dest, sizeof(addr128_t));
117 if (rc != EOK) {
118 async_exchange_end(exch);
119 async_forget(req);
120 return rc;
121 }
122
123 rc = async_data_write_start(exch, sdu->data, sdu->size);
124
125 async_exchange_end(exch);
126
127 if (rc != EOK) {
128 async_forget(req);
129 return rc;
130 }
131
132 sysarg_t retval;
133 async_wait_for(req, &retval);
134
135 return (int) retval;
136}
137
138static void inetping6_send_srv(inetping6_client_t *client, ipc_callid_t iid,
139 ipc_call_t *icall)
140{
141 log_msg(LOG_DEFAULT, LVL_DEBUG, "inetping6_send_srv()");
142
143 inetping6_sdu_t sdu;
144
145 sdu.seq_no = IPC_GET_ARG1(*icall);
146
147 ipc_callid_t callid;
148 size_t size;
149 if (!async_data_write_receive(&callid, &size)) {
150 async_answer_0(callid, EREFUSED);
151 async_answer_0(iid, EREFUSED);
152 return;
153 }
154
155 if (size != sizeof(addr128_t)) {
156 async_answer_0(callid, EINVAL);
157 async_answer_0(iid, EINVAL);
158 return;
159 }
160
161 int rc = async_data_write_finalize(callid, &sdu.src, size);
162 if (rc != EOK) {
163 async_answer_0(callid, rc);
164 async_answer_0(iid, rc);
165 return;
166 }
167
168 if (!async_data_write_receive(&callid, &size)) {
169 async_answer_0(callid, EREFUSED);
170 async_answer_0(iid, EREFUSED);
171 return;
172 }
173
174 if (size != sizeof(addr128_t)) {
175 async_answer_0(callid, EINVAL);
176 async_answer_0(iid, EINVAL);
177 return;
178 }
179
180 rc = async_data_write_finalize(callid, &sdu.dest, size);
181 if (rc != EOK) {
182 async_answer_0(callid, rc);
183 async_answer_0(iid, rc);
184 return;
185 }
186
187 rc = async_data_write_accept((void **) &sdu.data, false, 0, 0, 0,
188 &sdu.size);
189 if (rc != EOK) {
190 async_answer_0(iid, rc);
191 return;
192 }
193
194 rc = inetping6_send(client, &sdu);
195 free(sdu.data);
196
197 async_answer_0(iid, rc);
198}
199
200static void inetping6_get_srcaddr_srv(inetping6_client_t *client,
201 ipc_callid_t iid, ipc_call_t *icall)
202{
203 log_msg(LOG_DEFAULT, LVL_DEBUG, "inetping6_get_srcaddr_srv()");
204
205 ipc_callid_t callid;
206 size_t size;
207 if (!async_data_write_receive(&callid, &size)) {
208 async_answer_0(callid, EREFUSED);
209 async_answer_0(iid, EREFUSED);
210 return;
211 }
212
213 if (size != sizeof(addr128_t)) {
214 async_answer_0(callid, EINVAL);
215 async_answer_0(iid, EINVAL);
216 return;
217 }
218
219 addr128_t remote;
220 int rc = async_data_write_finalize(callid, &remote, size);
221 if (rc != EOK) {
222 async_answer_0(callid, rc);
223 async_answer_0(iid, rc);
224 return;
225 }
226
227 addr128_t local;
228 rc = inetping6_get_srcaddr(client, remote, &local);
229 if (rc != EOK) {
230 async_answer_0(iid, rc);
231 return;
232 }
233
234 if (!async_data_read_receive(&callid, &size)) {
235 async_answer_0(callid, EREFUSED);
236 async_answer_0(iid, EREFUSED);
237 return;
238 }
239
240 if (size != sizeof(addr128_t)) {
241 async_answer_0(callid, EINVAL);
242 async_answer_0(iid, EINVAL);
243 return;
244 }
245
246 rc = async_data_read_finalize(callid, &local, size);
247 if (rc != EOK)
248 async_answer_0(callid, rc);
249
250 async_answer_0(iid, rc);
251}
252
253static int inetping6_client_init(inetping6_client_t *client)
254{
255 async_sess_t *sess = async_callback_receive(EXCHANGE_SERIALIZE);
256 if (sess == NULL)
257 return ENOMEM;
258
259 client->sess = sess;
260 link_initialize(&client->client_list);
261
262 fibril_mutex_lock(&client_list_lock);
263 client->ident = ++inetping6_ident;
264 list_append(&client->client_list, &client_list);
265 fibril_mutex_unlock(&client_list_lock);
266
267 return EOK;
268}
269
270static void inetping6_client_fini(inetping6_client_t *client)
271{
272 async_hangup(client->sess);
273 client->sess = NULL;
274
275 fibril_mutex_lock(&client_list_lock);
276 list_remove(&client->client_list);
277 fibril_mutex_unlock(&client_list_lock);
278}
279
280void inetping6_conn(ipc_callid_t iid, ipc_call_t *icall, void *arg)
281{
282 log_msg(LOG_DEFAULT, LVL_DEBUG, "inetping6_conn()");
283
284 /* Accept the connection */
285 async_answer_0(iid, EOK);
286
287 inetping6_client_t client;
288 int rc = inetping6_client_init(&client);
289 if (rc != EOK)
290 return;
291
292 while (true) {
293 ipc_call_t call;
294 ipc_callid_t callid = async_get_call(&call);
295 sysarg_t method = IPC_GET_IMETHOD(call);
296
297 if (!method) {
298 /* The other side has hung up */
299 async_answer_0(callid, EOK);
300 break;
301 }
302
303 switch (method) {
304 case INETPING6_SEND:
305 inetping6_send_srv(&client, callid, &call);
306 break;
307 case INETPING6_GET_SRCADDR:
308 inetping6_get_srcaddr_srv(&client, callid, &call);
309 break;
310 default:
311 async_answer_0(callid, EINVAL);
312 }
313 }
314
315 inetping6_client_fini(&client);
316}
317
318/** @}
319 */
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