6 * Copyright (c) Maksim Yevmenkin <m_evmenkin@yahoo.com>
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * $Id: ng_l2cap_cmds.c,v 1.2 2003/09/08 19:11:45 max Exp $
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/endian.h>
38 #include <sys/malloc.h>
40 #include <sys/queue.h>
41 #include <netgraph/ng_message.h>
42 #include <netgraph/netgraph.h>
43 #include <netgraph/bluetooth/include/ng_bluetooth.h>
44 #include <netgraph/bluetooth/include/ng_hci.h>
45 #include <netgraph/bluetooth/include/ng_l2cap.h>
46 #include <netgraph/bluetooth/l2cap/ng_l2cap_var.h>
47 #include <netgraph/bluetooth/l2cap/ng_l2cap_cmds.h>
48 #include <netgraph/bluetooth/l2cap/ng_l2cap_evnt.h>
49 #include <netgraph/bluetooth/l2cap/ng_l2cap_llpi.h>
50 #include <netgraph/bluetooth/l2cap/ng_l2cap_ulpi.h>
51 #include <netgraph/bluetooth/l2cap/ng_l2cap_misc.h>
53 /******************************************************************************
54 ******************************************************************************
55 ** L2CAP commands processing module
56 ******************************************************************************
57 ******************************************************************************/
60 * Process L2CAP command queue on connection
64 ng_l2cap_con_wakeup(ng_l2cap_con_p con)
66 ng_l2cap_cmd_p cmd = NULL;
67 struct mbuf *m = NULL;
70 /* Find first non-pending command in the queue */
71 TAILQ_FOREACH(cmd, &con->cmd_list, next) {
72 KASSERT((cmd->con == con),
73 ("%s: %s - invalid connection pointer!\n",
74 __func__, NG_NODE_NAME(con->l2cap->node)));
76 if (!(cmd->flags & NG_L2CAP_CMD_PENDING))
83 /* Detach command packet */
89 case NG_L2CAP_CMD_REJ:
90 case NG_L2CAP_DISCON_RSP:
91 case NG_L2CAP_ECHO_RSP:
92 case NG_L2CAP_INFO_RSP:
94 * Do not check return ng_l2cap_lp_send() value, because
95 * in these cases we do not really have a graceful way out.
96 * ECHO and INFO responses are internal to the stack and not
97 * visible to user. REJect is just being nice to remote end
98 * (otherwise remote end will timeout anyway). DISCON is
99 * probably most interesting here, however, if it fails
100 * there is nothing we can do anyway.
103 (void) ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m);
104 ng_l2cap_unlink_cmd(cmd);
105 ng_l2cap_free_cmd(cmd);
108 case NG_L2CAP_CON_REQ:
109 error = ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m);
111 ng_l2cap_l2ca_con_rsp(cmd->ch, cmd->token,
112 NG_L2CAP_NO_RESOURCES, 0);
113 ng_l2cap_free_chan(cmd->ch); /* will free commands */
115 ng_l2cap_command_timeout(cmd,
116 bluetooth_l2cap_rtx_timeout());
119 case NG_L2CAP_CON_RSP:
120 error = ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m);
121 ng_l2cap_unlink_cmd(cmd);
122 if (cmd->ch != NULL) {
123 ng_l2cap_l2ca_con_rsp_rsp(cmd->ch, cmd->token,
124 (error == 0)? NG_L2CAP_SUCCESS :
125 NG_L2CAP_NO_RESOURCES);
127 ng_l2cap_free_chan(cmd->ch);
129 ng_l2cap_free_cmd(cmd);
132 case NG_L2CAP_CFG_REQ:
133 error = ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m);
135 ng_l2cap_l2ca_cfg_rsp(cmd->ch, cmd->token,
136 NG_L2CAP_NO_RESOURCES);
137 ng_l2cap_unlink_cmd(cmd);
138 ng_l2cap_free_cmd(cmd);
140 ng_l2cap_command_timeout(cmd,
141 bluetooth_l2cap_rtx_timeout());
144 case NG_L2CAP_CFG_RSP:
145 error = ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m);
146 ng_l2cap_unlink_cmd(cmd);
148 ng_l2cap_l2ca_cfg_rsp_rsp(cmd->ch, cmd->token,
149 (error == 0)? NG_L2CAP_SUCCESS :
150 NG_L2CAP_NO_RESOURCES);
151 ng_l2cap_free_cmd(cmd);
154 case NG_L2CAP_DISCON_REQ:
155 error = ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m);
156 ng_l2cap_l2ca_discon_rsp(cmd->ch, cmd->token,
157 (error == 0)? NG_L2CAP_SUCCESS : NG_L2CAP_NO_RESOURCES);
159 ng_l2cap_free_chan(cmd->ch); /* XXX free channel */
161 ng_l2cap_command_timeout(cmd,
162 bluetooth_l2cap_rtx_timeout());
165 case NG_L2CAP_ECHO_REQ:
166 error = ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m);
168 ng_l2cap_l2ca_ping_rsp(con, cmd->token,
169 NG_L2CAP_NO_RESOURCES, NULL);
170 ng_l2cap_unlink_cmd(cmd);
171 ng_l2cap_free_cmd(cmd);
173 ng_l2cap_command_timeout(cmd,
174 bluetooth_l2cap_rtx_timeout());
177 case NG_L2CAP_INFO_REQ:
178 error = ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m);
180 ng_l2cap_l2ca_get_info_rsp(con, cmd->token,
181 NG_L2CAP_NO_RESOURCES, NULL);
182 ng_l2cap_unlink_cmd(cmd);
183 ng_l2cap_free_cmd(cmd);
185 ng_l2cap_command_timeout(cmd,
186 bluetooth_l2cap_rtx_timeout());
189 case NGM_L2CAP_L2CA_WRITE: {
190 int length = m->m_pkthdr.len;
192 if (cmd->ch->dcid == NG_L2CAP_CLT_CID) {
193 m = ng_l2cap_prepend(m, sizeof(ng_l2cap_clt_hdr_t));
197 mtod(m, ng_l2cap_clt_hdr_t *)->psm =
198 htole16(cmd->ch->psm);
202 error = ng_l2cap_lp_send(con, cmd->ch->dcid, m);
204 ng_l2cap_l2ca_write_rsp(cmd->ch, cmd->token,
205 (error == 0)? NG_L2CAP_SUCCESS : NG_L2CAP_NO_RESOURCES,
208 ng_l2cap_unlink_cmd(cmd);
209 ng_l2cap_free_cmd(cmd);
212 /* XXX FIXME add other commands */
216 "%s: %s - unknown command code=%d\n",
217 __func__, NG_NODE_NAME(con->l2cap->node), cmd->code);
220 } /* ng_l2cap_con_wakeup */
223 * We have failed to open ACL connection to the remote unit. Could be negative
224 * confirmation or timeout. So fail any "delayed" commands, notify upper layer,
225 * remove all channels and remove connection descriptor.
229 ng_l2cap_con_fail(ng_l2cap_con_p con, u_int16_t result)
231 ng_l2cap_p l2cap = con->l2cap;
232 ng_l2cap_cmd_p cmd = NULL;
233 ng_l2cap_chan_p ch = NULL;
236 "%s: %s - ACL connection failed, result=%d\n",
237 __func__, NG_NODE_NAME(l2cap->node), result);
239 /* Connection is dying */
240 con->flags |= NG_L2CAP_CON_DYING;
242 /* Clean command queue */
243 while (!TAILQ_EMPTY(&con->cmd_list)) {
244 cmd = TAILQ_FIRST(&con->cmd_list);
246 ng_l2cap_unlink_cmd(cmd);
247 if(cmd->flags & NG_L2CAP_CMD_PENDING)
248 ng_l2cap_command_untimeout(cmd);
250 KASSERT((cmd->con == con),
251 ("%s: %s - invalid connection pointer!\n",
252 __func__, NG_NODE_NAME(l2cap->node)));
255 case NG_L2CAP_CMD_REJ:
256 case NG_L2CAP_DISCON_RSP:
257 case NG_L2CAP_ECHO_RSP:
258 case NG_L2CAP_INFO_RSP:
261 case NG_L2CAP_CON_REQ:
262 ng_l2cap_l2ca_con_rsp(cmd->ch, cmd->token, result, 0);
265 case NG_L2CAP_CON_RSP:
267 ng_l2cap_l2ca_con_rsp_rsp(cmd->ch, cmd->token,
271 case NG_L2CAP_CFG_REQ:
272 case NG_L2CAP_CFG_RSP:
273 case NGM_L2CAP_L2CA_WRITE:
274 ng_l2cap_l2ca_discon_ind(cmd->ch);
277 case NG_L2CAP_DISCON_REQ:
278 ng_l2cap_l2ca_discon_rsp(cmd->ch, cmd->token,
282 case NG_L2CAP_ECHO_REQ:
283 ng_l2cap_l2ca_ping_rsp(cmd->con, cmd->token,
287 case NG_L2CAP_INFO_REQ:
288 ng_l2cap_l2ca_get_info_rsp(cmd->con, cmd->token,
292 /* XXX FIXME add other commands */
296 "%s: %s - unexpected command code=%d\n",
297 __func__, NG_NODE_NAME(l2cap->node), cmd->code);
302 ng_l2cap_free_chan(cmd->ch);
304 ng_l2cap_free_cmd(cmd);
308 * There still might be channels (in OPEN state?) that
309 * did not submit any commands, so diconnect them
312 LIST_FOREACH(ch, &l2cap->chan_list, next)
314 ng_l2cap_l2ca_discon_ind(ch);
316 /* Free connection descriptor */
317 ng_l2cap_free_con(con);
318 } /* ng_l2cap_con_fail */
321 * Process L2CAP command timeout. In general - notify upper layer and destroy
322 * channel. Do not pay much attension to return code, just do our best.
326 ng_l2cap_process_command_timeout(node_p node, hook_p hook, void *arg1, int arg2)
328 ng_l2cap_p l2cap = NULL;
329 ng_l2cap_con_p con = NULL;
330 ng_l2cap_cmd_p cmd = NULL;
331 u_int16_t con_handle = (arg2 & 0x0ffff);
332 u_int8_t ident = ((arg2 >> 16) & 0xff);
334 if (NG_NODE_NOT_VALID(node)) {
335 printf("%s: Netgraph node is not valid\n", __func__);
339 l2cap = (ng_l2cap_p) NG_NODE_PRIVATE(node);
341 con = ng_l2cap_con_by_handle(l2cap, con_handle);
344 "%s: %s - could not find connection, con_handle=%d\n",
345 __func__, NG_NODE_NAME(node), con_handle);
349 cmd = ng_l2cap_cmd_by_ident(con, ident);
352 "%s: %s - could not find command, con_handle=%d, ident=%d\n",
353 __func__, NG_NODE_NAME(node), con_handle, ident);
357 cmd->flags &= ~NG_L2CAP_CMD_PENDING;
358 ng_l2cap_unlink_cmd(cmd);
361 case NG_L2CAP_CON_REQ:
362 ng_l2cap_l2ca_con_rsp(cmd->ch, cmd->token, NG_L2CAP_TIMEOUT, 0);
363 ng_l2cap_free_chan(cmd->ch);
366 case NG_L2CAP_CFG_REQ:
367 ng_l2cap_l2ca_cfg_rsp(cmd->ch, cmd->token, NG_L2CAP_TIMEOUT);
370 case NG_L2CAP_DISCON_REQ:
371 ng_l2cap_l2ca_discon_rsp(cmd->ch, cmd->token, NG_L2CAP_TIMEOUT);
372 ng_l2cap_free_chan(cmd->ch); /* XXX free channel */
375 case NG_L2CAP_ECHO_REQ:
376 /* Echo request timed out. Let the upper layer know */
377 ng_l2cap_l2ca_ping_rsp(cmd->con, cmd->token,
378 NG_L2CAP_TIMEOUT, NULL);
381 case NG_L2CAP_INFO_REQ:
382 /* Info request timed out. Let the upper layer know */
383 ng_l2cap_l2ca_get_info_rsp(cmd->con, cmd->token,
384 NG_L2CAP_TIMEOUT, NULL);
387 /* XXX FIXME add other commands */
391 "%s: %s - unexpected command code=%d\n",
392 __func__, NG_NODE_NAME(l2cap->node), cmd->code);
396 ng_l2cap_free_cmd(cmd);
397 } /* ng_l2cap_process_command_timeout */