source: mainline/uspace/lib/c/generic/iplink.c@ 21799398

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 21799398 was c3b25985, checked in by Agnieszka Tabaka <nufcia@…>, 11 years ago

Add support for actual MAC change in networking stack.
  • Property mode set to 100644
File size: 6.6 KB
Line 
1/*
2 * Copyright (c) 2012 Jiri Svoboda
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 libc
30 * @{
31 */
32/**
33 * @file
34 * @brief IP link client stub
35 */
36
37#include <async.h>
38#include <assert.h>
39#include <errno.h>
40#include <inet/iplink.h>
41#include <inet/addr.h>
42#include <ipc/iplink.h>
43#include <ipc/services.h>
44#include <loc.h>
45#include <stdlib.h>
46
47static void iplink_cb_conn(ipc_callid_t iid, ipc_call_t *icall, void *arg);
48
49int iplink_open(async_sess_t *sess, iplink_ev_ops_t *ev_ops,
50 iplink_t **riplink)
51{
52 iplink_t *iplink = calloc(1, sizeof(iplink_t));
53 if (iplink == NULL)
54 return ENOMEM;
55
56 iplink->sess = sess;
57 iplink->ev_ops = ev_ops;
58
59 async_exch_t *exch = async_exchange_begin(sess);
60
61 int rc = async_connect_to_me(exch, 0, 0, 0, iplink_cb_conn, iplink);
62 async_exchange_end(exch);
63
64 if (rc != EOK)
65 goto error;
66
67 *riplink = iplink;
68 return EOK;
69
70error:
71 if (iplink != NULL)
72 free(iplink);
73
74 return rc;
75}
76
77void iplink_close(iplink_t *iplink)
78{
79 /* XXX Synchronize with iplink_cb_conn */
80 free(iplink);
81}
82
83int iplink_send(iplink_t *iplink, iplink_sdu_t *sdu)
84{
85 async_exch_t *exch = async_exchange_begin(iplink->sess);
86
87 ipc_call_t answer;
88 aid_t req = async_send_2(exch, IPLINK_SEND, (sysarg_t) sdu->src,
89 (sysarg_t) sdu->dest, &answer);
90
91 int rc = async_data_write_start(exch, sdu->data, sdu->size);
92
93 async_exchange_end(exch);
94
95 if (rc != EOK) {
96 async_forget(req);
97 return rc;
98 }
99
100 sysarg_t retval;
101 async_wait_for(req, &retval);
102
103 return (int) retval;
104}
105
106int iplink_send6(iplink_t *iplink, iplink_sdu6_t *sdu)
107{
108 async_exch_t *exch = async_exchange_begin(iplink->sess);
109
110 ipc_call_t answer;
111 aid_t req = async_send_0(exch, IPLINK_SEND6, &answer);
112
113 int rc = async_data_write_start(exch, &sdu->dest, sizeof(addr48_t));
114 if (rc != EOK) {
115 async_exchange_end(exch);
116 async_forget(req);
117 return rc;
118 }
119
120 rc = async_data_write_start(exch, sdu->data, sdu->size);
121
122 async_exchange_end(exch);
123
124 if (rc != EOK) {
125 async_forget(req);
126 return rc;
127 }
128
129 sysarg_t retval;
130 async_wait_for(req, &retval);
131
132 return (int) retval;
133}
134
135int iplink_get_mtu(iplink_t *iplink, size_t *rmtu)
136{
137 async_exch_t *exch = async_exchange_begin(iplink->sess);
138
139 sysarg_t mtu;
140 int rc = async_req_0_1(exch, IPLINK_GET_MTU, &mtu);
141
142 async_exchange_end(exch);
143
144 if (rc != EOK)
145 return rc;
146
147 *rmtu = mtu;
148 return EOK;
149}
150
151int iplink_get_mac48(iplink_t *iplink, addr48_t *mac)
152{
153 async_exch_t *exch = async_exchange_begin(iplink->sess);
154
155 ipc_call_t answer;
156 aid_t req = async_send_0(exch, IPLINK_GET_MAC48, &answer);
157
158 int rc = async_data_read_start(exch, mac, sizeof(addr48_t));
159
160 loc_exchange_end(exch);
161
162 if (rc != EOK) {
163 async_forget(req);
164 return rc;
165 }
166
167 sysarg_t retval;
168 async_wait_for(req, &retval);
169
170 return (int) retval;
171}
172
173int iplink_set_mac48(iplink_t *iplink, addr48_t mac)
174{
175 async_exch_t *exch = async_exchange_begin(iplink->sess);
176
177 ipc_call_t answer;
178 aid_t req = async_send_0(exch, IPLINK_GET_MAC48, &answer);
179
180 int rc = async_data_read_start(exch, mac, sizeof(addr48_t));
181
182 loc_exchange_end(exch);
183
184 if (rc != EOK) {
185 async_forget(req);
186 return rc;
187 }
188
189 sysarg_t retval;
190 async_wait_for(req, &retval);
191
192 return (int) retval;
193}
194
195
196int iplink_addr_add(iplink_t *iplink, inet_addr_t *addr)
197{
198 async_exch_t *exch = async_exchange_begin(iplink->sess);
199
200 ipc_call_t answer;
201 aid_t req = async_send_0(exch, IPLINK_ADDR_ADD, &answer);
202
203 int rc = async_data_write_start(exch, addr, sizeof(inet_addr_t));
204 async_exchange_end(exch);
205
206 if (rc != EOK) {
207 async_forget(req);
208 return rc;
209 }
210
211 sysarg_t retval;
212 async_wait_for(req, &retval);
213
214 return (int) retval;
215}
216
217int iplink_addr_remove(iplink_t *iplink, inet_addr_t *addr)
218{
219 async_exch_t *exch = async_exchange_begin(iplink->sess);
220
221 ipc_call_t answer;
222 aid_t req = async_send_0(exch, IPLINK_ADDR_REMOVE, &answer);
223
224 int rc = async_data_write_start(exch, addr, sizeof(inet_addr_t));
225 async_exchange_end(exch);
226
227 if (rc != EOK) {
228 async_forget(req);
229 return rc;
230 }
231
232 sysarg_t retval;
233 async_wait_for(req, &retval);
234
235 return (int) retval;
236}
237
238static void iplink_ev_recv(iplink_t *iplink, ipc_callid_t iid,
239 ipc_call_t *icall)
240{
241 iplink_recv_sdu_t sdu;
242
243 ip_ver_t ver = IPC_GET_ARG1(*icall);
244
245 int rc = async_data_write_accept(&sdu.data, false, 0, 0, 0,
246 &sdu.size);
247 if (rc != EOK) {
248 async_answer_0(iid, rc);
249 return;
250 }
251
252 rc = iplink->ev_ops->recv(iplink, &sdu, ver);
253 free(sdu.data);
254 async_answer_0(iid, rc);
255}
256
257static void iplink_ev_change_addr(iplink_t *iplink, ipc_callid_t iid,
258 ipc_call_t *icall)
259{
260 addr48_t *addr;
261 size_t size;
262
263 int rc = async_data_write_accept((void **)&addr, false,
264 sizeof(addr48_t), sizeof(addr48_t), 0, &size);
265 if (rc != EOK) {
266 async_answer_0(iid, rc);
267 return;
268 }
269
270 rc = iplink->ev_ops->change_addr(iplink, *addr);
271 free(addr);
272 async_answer_0(iid, EOK);
273}
274
275static void iplink_cb_conn(ipc_callid_t iid, ipc_call_t *icall, void *arg)
276{
277 iplink_t *iplink = (iplink_t *) arg;
278
279 while (true) {
280 ipc_call_t call;
281 ipc_callid_t callid = async_get_call(&call);
282
283 if (!IPC_GET_IMETHOD(call)) {
284 /* TODO: Handle hangup */
285 return;
286 }
287
288 switch (IPC_GET_IMETHOD(call)) {
289 case IPLINK_EV_RECV:
290 iplink_ev_recv(iplink, callid, &call);
291 break;
292 case IPLINK_EV_CHANGE_ADDR:
293 iplink_ev_change_addr(iplink, callid, &call);
294 default:
295 async_answer_0(callid, ENOTSUP);
296 }
297 }
298}
299
300/** @}
301 */
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