| 1 | /* |
| 2 | * ng_btsocket_l2cap_raw.c |
| 3 | */ |
| 4 | |
| 5 | /*- |
| 6 | * Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com> |
| 7 | * All rights reserved. |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 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. |
| 17 | * |
| 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 |
| 28 | * SUCH DAMAGE. |
| 29 | * |
| 30 | * $Id: ng_btsocket_l2cap_raw.c,v 1.12 2003/09/14 23:29:06 max Exp $ |
| 31 | * $FreeBSD: src/sys/netgraph/bluetooth/socket/ng_btsocket_l2cap_raw.c,v 1.20 2006/11/06 13:42:04 rwatson Exp $ |
| 32 | * $DragonFly: src/sys/netgraph7/bluetooth/socket/ng_btsocket_l2cap_raw.c,v 1.2 2008/06/26 23:05:40 dillon Exp $ |
| 33 | */ |
| 34 | |
| 35 | #include <sys/param.h> |
| 36 | #include <sys/systm.h> |
| 37 | #include <sys/bitstring.h> |
| 38 | #include <sys/domain.h> |
| 39 | #include <sys/errno.h> |
| 40 | #include <sys/filedesc.h> |
| 41 | #include <sys/kernel.h> |
| 42 | #include <sys/lock.h> |
| 43 | #include <sys/malloc.h> |
| 44 | #include <sys/mbuf.h> |
| 45 | #include <sys/mutex.h> |
| 46 | #include <sys/priv.h> |
| 47 | #include <sys/protosw.h> |
| 48 | #include <sys/queue.h> |
| 49 | #include <sys/socket.h> |
| 50 | #include <sys/socketvar.h> |
| 51 | #include <sys/sysctl.h> |
| 52 | #include <sys/taskqueue.h> |
| 53 | #include "ng_message.h" |
| 54 | #include "netgraph.h" |
| 55 | #include "bluetooth/include/ng_bluetooth.h" |
| 56 | #include "bluetooth/include/ng_hci.h" |
| 57 | #include "bluetooth/include/ng_l2cap.h" |
| 58 | #include "bluetooth/include/ng_btsocket.h" |
| 59 | #include "bluetooth/include/ng_btsocket_l2cap.h" |
| 60 | |
| 61 | /* MALLOC define */ |
| 62 | #ifdef NG_SEPARATE_MALLOC |
| 63 | MALLOC_DEFINE(M_NETGRAPH_BTSOCKET_L2CAP_RAW, "netgraph_btsocks_l2cap_raw", |
| 64 | "Netgraph Bluetooth raw L2CAP sockets"); |
| 65 | #else |
| 66 | #define M_NETGRAPH_BTSOCKET_L2CAP_RAW M_NETGRAPH |
| 67 | #endif /* NG_SEPARATE_MALLOC */ |
| 68 | |
| 69 | /* Netgraph node methods */ |
| 70 | static ng_constructor_t ng_btsocket_l2cap_raw_node_constructor; |
| 71 | static ng_rcvmsg_t ng_btsocket_l2cap_raw_node_rcvmsg; |
| 72 | static ng_shutdown_t ng_btsocket_l2cap_raw_node_shutdown; |
| 73 | static ng_newhook_t ng_btsocket_l2cap_raw_node_newhook; |
| 74 | static ng_connect_t ng_btsocket_l2cap_raw_node_connect; |
| 75 | static ng_rcvdata_t ng_btsocket_l2cap_raw_node_rcvdata; |
| 76 | static ng_disconnect_t ng_btsocket_l2cap_raw_node_disconnect; |
| 77 | |
| 78 | static void ng_btsocket_l2cap_raw_input (void *, int); |
| 79 | static void ng_btsocket_l2cap_raw_rtclean (void *, int); |
| 80 | static void ng_btsocket_l2cap_raw_get_token (u_int32_t *); |
| 81 | |
| 82 | static int ng_btsocket_l2cap_raw_send_ngmsg |
| 83 | (hook_p, int, void *, int); |
| 84 | static int ng_btsocket_l2cap_raw_send_sync_ngmsg |
| 85 | (ng_btsocket_l2cap_raw_pcb_p, int, void *, int); |
| 86 | |
| 87 | #define ng_btsocket_l2cap_raw_wakeup_input_task() \ |
| 88 | taskqueue_enqueue(taskqueue_swi, &ng_btsocket_l2cap_raw_queue_task) |
| 89 | |
| 90 | #define ng_btsocket_l2cap_raw_wakeup_route_task() \ |
| 91 | taskqueue_enqueue(taskqueue_swi, &ng_btsocket_l2cap_raw_rt_task) |
| 92 | |
| 93 | /* Netgraph type descriptor */ |
| 94 | static struct ng_type typestruct = { |
| 95 | .version = NG_ABI_VERSION, |
| 96 | .name = NG_BTSOCKET_L2CAP_RAW_NODE_TYPE, |
| 97 | .constructor = ng_btsocket_l2cap_raw_node_constructor, |
| 98 | .rcvmsg = ng_btsocket_l2cap_raw_node_rcvmsg, |
| 99 | .shutdown = ng_btsocket_l2cap_raw_node_shutdown, |
| 100 | .newhook = ng_btsocket_l2cap_raw_node_newhook, |
| 101 | .connect = ng_btsocket_l2cap_raw_node_connect, |
| 102 | .rcvdata = ng_btsocket_l2cap_raw_node_rcvdata, |
| 103 | .disconnect = ng_btsocket_l2cap_raw_node_disconnect, |
| 104 | }; |
| 105 | |
| 106 | /* Globals */ |
| 107 | extern int ifqmaxlen; |
| 108 | static u_int32_t ng_btsocket_l2cap_raw_debug_level; |
| 109 | static u_int32_t ng_btsocket_l2cap_raw_ioctl_timeout; |
| 110 | static node_p ng_btsocket_l2cap_raw_node; |
| 111 | static struct ng_bt_itemq ng_btsocket_l2cap_raw_queue; |
| 112 | static struct mtx ng_btsocket_l2cap_raw_queue_mtx; |
| 113 | static struct task ng_btsocket_l2cap_raw_queue_task; |
| 114 | static LIST_HEAD(, ng_btsocket_l2cap_raw_pcb) ng_btsocket_l2cap_raw_sockets; |
| 115 | static struct mtx ng_btsocket_l2cap_raw_sockets_mtx; |
| 116 | static u_int32_t ng_btsocket_l2cap_raw_token; |
| 117 | static struct mtx ng_btsocket_l2cap_raw_token_mtx; |
| 118 | static LIST_HEAD(, ng_btsocket_l2cap_rtentry) ng_btsocket_l2cap_raw_rt; |
| 119 | static struct mtx ng_btsocket_l2cap_raw_rt_mtx; |
| 120 | static struct task ng_btsocket_l2cap_raw_rt_task; |
| 121 | |
| 122 | /* Sysctl tree */ |
| 123 | SYSCTL_DECL(_net_bluetooth_l2cap_sockets); |
| 124 | SYSCTL_NODE(_net_bluetooth_l2cap_sockets, OID_AUTO, raw, CTLFLAG_RW, |
| 125 | 0, "Bluetooth raw L2CAP sockets family"); |
| 126 | SYSCTL_INT(_net_bluetooth_l2cap_sockets_raw, OID_AUTO, debug_level, |
| 127 | CTLFLAG_RW, |
| 128 | &ng_btsocket_l2cap_raw_debug_level, NG_BTSOCKET_WARN_LEVEL, |
| 129 | "Bluetooth raw L2CAP sockets debug level"); |
| 130 | SYSCTL_INT(_net_bluetooth_l2cap_sockets_raw, OID_AUTO, ioctl_timeout, |
| 131 | CTLFLAG_RW, |
| 132 | &ng_btsocket_l2cap_raw_ioctl_timeout, 5, |
| 133 | "Bluetooth raw L2CAP sockets ioctl timeout"); |
| 134 | SYSCTL_INT(_net_bluetooth_l2cap_sockets_raw, OID_AUTO, queue_len, |
| 135 | CTLFLAG_RD, |
| 136 | &ng_btsocket_l2cap_raw_queue.len, 0, |
| 137 | "Bluetooth raw L2CAP sockets input queue length"); |
| 138 | SYSCTL_INT(_net_bluetooth_l2cap_sockets_raw, OID_AUTO, queue_maxlen, |
| 139 | CTLFLAG_RD, |
| 140 | &ng_btsocket_l2cap_raw_queue.maxlen, 0, |
| 141 | "Bluetooth raw L2CAP sockets input queue max. length"); |
| 142 | SYSCTL_INT(_net_bluetooth_l2cap_sockets_raw, OID_AUTO, queue_drops, |
| 143 | CTLFLAG_RD, |
| 144 | &ng_btsocket_l2cap_raw_queue.drops, 0, |
| 145 | "Bluetooth raw L2CAP sockets input queue drops"); |
| 146 | |
| 147 | /* Debug */ |
| 148 | #define NG_BTSOCKET_L2CAP_RAW_INFO \ |
| 149 | if (ng_btsocket_l2cap_raw_debug_level >= NG_BTSOCKET_INFO_LEVEL) \ |
| 150 | printf |
| 151 | |
| 152 | #define NG_BTSOCKET_L2CAP_RAW_WARN \ |
| 153 | if (ng_btsocket_l2cap_raw_debug_level >= NG_BTSOCKET_WARN_LEVEL) \ |
| 154 | printf |
| 155 | |
| 156 | #define NG_BTSOCKET_L2CAP_RAW_ERR \ |
| 157 | if (ng_btsocket_l2cap_raw_debug_level >= NG_BTSOCKET_ERR_LEVEL) \ |
| 158 | printf |
| 159 | |
| 160 | #define NG_BTSOCKET_L2CAP_RAW_ALERT \ |
| 161 | if (ng_btsocket_l2cap_raw_debug_level >= NG_BTSOCKET_ALERT_LEVEL) \ |
| 162 | printf |
| 163 | |
| 164 | /***************************************************************************** |
| 165 | ***************************************************************************** |
| 166 | ** Netgraph node interface |
| 167 | ***************************************************************************** |
| 168 | *****************************************************************************/ |
| 169 | |
| 170 | /* |
| 171 | * Netgraph node constructor. Do not allow to create node of this type. |
| 172 | */ |
| 173 | |
| 174 | static int |
| 175 | ng_btsocket_l2cap_raw_node_constructor(node_p node) |
| 176 | { |
| 177 | return (EINVAL); |
| 178 | } /* ng_btsocket_l2cap_raw_node_constructor */ |
| 179 | |
| 180 | /* |
| 181 | * Do local shutdown processing. Let old node go and create new fresh one. |
| 182 | */ |
| 183 | |
| 184 | static int |
| 185 | ng_btsocket_l2cap_raw_node_shutdown(node_p node) |
| 186 | { |
| 187 | int error = 0; |
| 188 | |
| 189 | NG_NODE_UNREF(node); |
| 190 | |
| 191 | /* Create new node */ |
| 192 | error = ng_make_node_common(&typestruct, &ng_btsocket_l2cap_raw_node); |
| 193 | if (error != 0) { |
| 194 | NG_BTSOCKET_L2CAP_RAW_ALERT( |
| 195 | "%s: Could not create Netgraph node, error=%d\n", __func__, error); |
| 196 | |
| 197 | ng_btsocket_l2cap_raw_node = NULL; |
| 198 | |
| 199 | return (error); |
| 200 | } |
| 201 | |
| 202 | error = ng_name_node(ng_btsocket_l2cap_raw_node, |
| 203 | NG_BTSOCKET_L2CAP_RAW_NODE_TYPE); |
| 204 | if (error != 0) { |
| 205 | NG_BTSOCKET_L2CAP_RAW_ALERT( |
| 206 | "%s: Could not name Netgraph node, error=%d\n", __func__, error); |
| 207 | |
| 208 | NG_NODE_UNREF(ng_btsocket_l2cap_raw_node); |
| 209 | ng_btsocket_l2cap_raw_node = NULL; |
| 210 | |
| 211 | return (error); |
| 212 | } |
| 213 | |
| 214 | return (0); |
| 215 | } /* ng_btsocket_l2cap_raw_node_shutdown */ |
| 216 | |
| 217 | /* |
| 218 | * We allow any hook to be connected to the node. |
| 219 | */ |
| 220 | |
| 221 | static int |
| 222 | ng_btsocket_l2cap_raw_node_newhook(node_p node, hook_p hook, char const *name) |
| 223 | { |
| 224 | return (0); |
| 225 | } /* ng_btsocket_l2cap_raw_node_newhook */ |
| 226 | |
| 227 | /* |
| 228 | * Just say "YEP, that's OK by me!" |
| 229 | */ |
| 230 | |
| 231 | static int |
| 232 | ng_btsocket_l2cap_raw_node_connect(hook_p hook) |
| 233 | { |
| 234 | NG_HOOK_SET_PRIVATE(hook, NULL); |
| 235 | NG_HOOK_REF(hook); /* Keep extra reference to the hook */ |
| 236 | |
| 237 | return (0); |
| 238 | } /* ng_btsocket_l2cap_raw_node_connect */ |
| 239 | |
| 240 | /* |
| 241 | * Hook disconnection. Schedule route cleanup task |
| 242 | */ |
| 243 | |
| 244 | static int |
| 245 | ng_btsocket_l2cap_raw_node_disconnect(hook_p hook) |
| 246 | { |
| 247 | /* |
| 248 | * If hook has private information than we must have this hook in |
| 249 | * the routing table and must schedule cleaning for the routing table. |
| 250 | * Otherwise hook was connected but we never got "hook_info" message, |
| 251 | * so we have never added this hook to the routing table and it save |
| 252 | * to just delete it. |
| 253 | */ |
| 254 | |
| 255 | if (NG_HOOK_PRIVATE(hook) != NULL) |
| 256 | return (ng_btsocket_l2cap_raw_wakeup_route_task()); |
| 257 | |
| 258 | NG_HOOK_UNREF(hook); /* Remove extra reference */ |
| 259 | |
| 260 | return (0); |
| 261 | } /* ng_btsocket_l2cap_raw_node_disconnect */ |
| 262 | |
| 263 | /* |
| 264 | * Process incoming messages |
| 265 | */ |
| 266 | |
| 267 | static int |
| 268 | ng_btsocket_l2cap_raw_node_rcvmsg(node_p node, item_p item, hook_p hook) |
| 269 | { |
| 270 | struct ng_mesg *msg = NGI_MSG(item); /* item still has message */ |
| 271 | int error = 0; |
| 272 | |
| 273 | if (msg != NULL && msg->header.typecookie == NGM_L2CAP_COOKIE) { |
| 274 | |
| 275 | /* |
| 276 | * NGM_L2CAP_NODE_HOOK_INFO is special message initiated by |
| 277 | * L2CAP layer. Ignore all other messages if they are not |
| 278 | * replies or token is zero |
| 279 | */ |
| 280 | |
| 281 | if (msg->header.cmd != NGM_L2CAP_NODE_HOOK_INFO) { |
| 282 | if (msg->header.token == 0 || |
| 283 | !(msg->header.flags & NGF_RESP)) { |
| 284 | NG_FREE_ITEM(item); |
| 285 | return (0); |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | mtx_lock(&ng_btsocket_l2cap_raw_queue_mtx); |
| 290 | if (NG_BT_ITEMQ_FULL(&ng_btsocket_l2cap_raw_queue)) { |
| 291 | NG_BTSOCKET_L2CAP_RAW_ERR( |
| 292 | "%s: Input queue is full\n", __func__); |
| 293 | |
| 294 | NG_BT_ITEMQ_DROP(&ng_btsocket_l2cap_raw_queue); |
| 295 | NG_FREE_ITEM(item); |
| 296 | error = ENOBUFS; |
| 297 | } else { |
| 298 | if (hook != NULL) { |
| 299 | NG_HOOK_REF(hook); |
| 300 | NGI_SET_HOOK(item, hook); |
| 301 | } |
| 302 | |
| 303 | NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_l2cap_raw_queue, item); |
| 304 | error = ng_btsocket_l2cap_raw_wakeup_input_task(); |
| 305 | } |
| 306 | mtx_unlock(&ng_btsocket_l2cap_raw_queue_mtx); |
| 307 | } else { |
| 308 | NG_FREE_ITEM(item); |
| 309 | error = EINVAL; |
| 310 | } |
| 311 | |
| 312 | return (error); |
| 313 | } /* ng_btsocket_l2cap_raw_node_rcvmsg */ |
| 314 | |
| 315 | /* |
| 316 | * Receive data on a hook |
| 317 | */ |
| 318 | |
| 319 | static int |
| 320 | ng_btsocket_l2cap_raw_node_rcvdata(hook_p hook, item_p item) |
| 321 | { |
| 322 | NG_FREE_ITEM(item); |
| 323 | |
| 324 | return (EINVAL); |
| 325 | } /* ng_btsocket_l2cap_raw_node_rcvdata */ |
| 326 | |
| 327 | /***************************************************************************** |
| 328 | ***************************************************************************** |
| 329 | ** Socket interface |
| 330 | ***************************************************************************** |
| 331 | *****************************************************************************/ |
| 332 | |
| 333 | /* |
| 334 | * L2CAP sockets input routine |
| 335 | */ |
| 336 | |
| 337 | static void |
| 338 | ng_btsocket_l2cap_raw_input(void *context, int pending) |
| 339 | { |
| 340 | item_p item = NULL; |
| 341 | hook_p hook = NULL; |
| 342 | struct ng_mesg *msg = NULL; |
| 343 | |
| 344 | for (;;) { |
| 345 | mtx_lock(&ng_btsocket_l2cap_raw_queue_mtx); |
| 346 | NG_BT_ITEMQ_DEQUEUE(&ng_btsocket_l2cap_raw_queue, item); |
| 347 | mtx_unlock(&ng_btsocket_l2cap_raw_queue_mtx); |
| 348 | |
| 349 | if (item == NULL) |
| 350 | break; |
| 351 | |
| 352 | KASSERT((item->el_flags & NGQF_TYPE) == NGQF_MESG, |
| 353 | ("%s: invalid item type=%ld\n", __func__, (item->el_flags & NGQF_TYPE))); |
| 354 | |
| 355 | NGI_GET_MSG(item, msg); |
| 356 | NGI_GET_HOOK(item, hook); |
| 357 | NG_FREE_ITEM(item); |
| 358 | |
| 359 | switch (msg->header.cmd) { |
| 360 | case NGM_L2CAP_NODE_HOOK_INFO: { |
| 361 | ng_btsocket_l2cap_rtentry_t *rt = NULL; |
| 362 | |
| 363 | if (hook == NULL || NG_HOOK_NOT_VALID(hook) || |
| 364 | msg->header.arglen != sizeof(bdaddr_t)) |
| 365 | break; |
| 366 | |
| 367 | if (bcmp(msg->data, NG_HCI_BDADDR_ANY, |
| 368 | sizeof(bdaddr_t)) == 0) |
| 369 | break; |
| 370 | |
| 371 | rt = (ng_btsocket_l2cap_rtentry_t *) |
| 372 | NG_HOOK_PRIVATE(hook); |
| 373 | if (rt == NULL) { |
| 374 | rt = kmalloc(sizeof(*rt), |
| 375 | M_NETGRAPH_BTSOCKET_L2CAP_RAW, |
| 376 | M_WAITOK | M_NULLOK | M_ZERO); |
| 377 | if (rt == NULL) |
| 378 | break; |
| 379 | |
| 380 | NG_HOOK_SET_PRIVATE(hook, rt); |
| 381 | |
| 382 | mtx_lock(&ng_btsocket_l2cap_raw_rt_mtx); |
| 383 | |
| 384 | LIST_INSERT_HEAD(&ng_btsocket_l2cap_raw_rt, |
| 385 | rt, next); |
| 386 | } else |
| 387 | mtx_lock(&ng_btsocket_l2cap_raw_rt_mtx); |
| 388 | |
| 389 | bcopy(msg->data, &rt->src, sizeof(rt->src)); |
| 390 | rt->hook = hook; |
| 391 | |
| 392 | NG_BTSOCKET_L2CAP_RAW_INFO( |
| 393 | "%s: Updating hook \"%s\", src bdaddr=%x:%x:%x:%x:%x:%x\n", |
| 394 | __func__, NG_HOOK_NAME(hook), |
| 395 | rt->src.b[5], rt->src.b[4], rt->src.b[3], |
| 396 | rt->src.b[2], rt->src.b[1], rt->src.b[0]); |
| 397 | |
| 398 | mtx_unlock(&ng_btsocket_l2cap_raw_rt_mtx); |
| 399 | } break; |
| 400 | |
| 401 | case NGM_L2CAP_NODE_GET_FLAGS: |
| 402 | case NGM_L2CAP_NODE_GET_DEBUG: |
| 403 | case NGM_L2CAP_NODE_GET_CON_LIST: |
| 404 | case NGM_L2CAP_NODE_GET_CHAN_LIST: |
| 405 | case NGM_L2CAP_NODE_GET_AUTO_DISCON_TIMO: |
| 406 | case NGM_L2CAP_L2CA_PING: |
| 407 | case NGM_L2CAP_L2CA_GET_INFO: { |
| 408 | ng_btsocket_l2cap_raw_pcb_p pcb = NULL; |
| 409 | |
| 410 | mtx_lock(&ng_btsocket_l2cap_raw_sockets_mtx); |
| 411 | |
| 412 | LIST_FOREACH(pcb,&ng_btsocket_l2cap_raw_sockets,next) { |
| 413 | mtx_lock(&pcb->pcb_mtx); |
| 414 | |
| 415 | if (pcb->token == msg->header.token) { |
| 416 | pcb->msg = msg; |
| 417 | msg = NULL; |
| 418 | wakeup(&pcb->msg); |
| 419 | mtx_unlock(&pcb->pcb_mtx); |
| 420 | break; |
| 421 | } |
| 422 | |
| 423 | mtx_unlock(&pcb->pcb_mtx); |
| 424 | } |
| 425 | |
| 426 | mtx_unlock(&ng_btsocket_l2cap_raw_sockets_mtx); |
| 427 | } break; |
| 428 | |
| 429 | default: |
| 430 | NG_BTSOCKET_L2CAP_RAW_WARN( |
| 431 | "%s: Unknown message, cmd=%d\n", __func__, msg->header.cmd); |
| 432 | break; |
| 433 | } |
| 434 | |
| 435 | if (hook != NULL) |
| 436 | NG_HOOK_UNREF(hook); /* remove extra reference */ |
| 437 | |
| 438 | NG_FREE_MSG(msg); /* Checks for msg != NULL */ |
| 439 | } |
| 440 | } /* ng_btsocket_l2cap_raw_input */ |
| 441 | |
| 442 | /* |
| 443 | * Route cleanup task. Gets scheduled when hook is disconnected. Here we |
| 444 | * will find all sockets that use "invalid" hook and disconnect them. |
| 445 | */ |
| 446 | |
| 447 | static void |
| 448 | ng_btsocket_l2cap_raw_rtclean(void *context, int pending) |
| 449 | { |
| 450 | ng_btsocket_l2cap_raw_pcb_p pcb = NULL; |
| 451 | ng_btsocket_l2cap_rtentry_p rt = NULL; |
| 452 | |
| 453 | /* |
| 454 | * First disconnect all sockets that use "invalid" hook |
| 455 | */ |
| 456 | |
| 457 | mtx_lock(&ng_btsocket_l2cap_raw_sockets_mtx); |
| 458 | |
| 459 | LIST_FOREACH(pcb, &ng_btsocket_l2cap_raw_sockets, next) { |
| 460 | mtx_lock(&pcb->pcb_mtx); |
| 461 | |
| 462 | if (pcb->rt != NULL && |
| 463 | pcb->rt->hook != NULL && NG_HOOK_NOT_VALID(pcb->rt->hook)) { |
| 464 | if (pcb->so != NULL && |
| 465 | pcb->so->so_state & SS_ISCONNECTED) |
| 466 | soisdisconnected(pcb->so); |
| 467 | |
| 468 | pcb->rt = NULL; |
| 469 | } |
| 470 | |
| 471 | mtx_unlock(&pcb->pcb_mtx); |
| 472 | } |
| 473 | |
| 474 | mtx_unlock(&ng_btsocket_l2cap_raw_sockets_mtx); |
| 475 | |
| 476 | /* |
| 477 | * Now cleanup routing table |
| 478 | */ |
| 479 | |
| 480 | mtx_lock(&ng_btsocket_l2cap_raw_rt_mtx); |
| 481 | |
| 482 | for (rt = LIST_FIRST(&ng_btsocket_l2cap_raw_rt); rt != NULL; ) { |
| 483 | ng_btsocket_l2cap_rtentry_p rt_next = LIST_NEXT(rt, next); |
| 484 | |
| 485 | if (rt->hook != NULL && NG_HOOK_NOT_VALID(rt->hook)) { |
| 486 | LIST_REMOVE(rt, next); |
| 487 | |
| 488 | NG_HOOK_SET_PRIVATE(rt->hook, NULL); |
| 489 | NG_HOOK_UNREF(rt->hook); /* Remove extra reference */ |
| 490 | |
| 491 | bzero(rt, sizeof(*rt)); |
| 492 | kfree(rt, M_NETGRAPH_BTSOCKET_L2CAP_RAW); |
| 493 | } |
| 494 | |
| 495 | rt = rt_next; |
| 496 | } |
| 497 | |
| 498 | mtx_unlock(&ng_btsocket_l2cap_raw_rt_mtx); |
| 499 | } /* ng_btsocket_l2cap_raw_rtclean */ |
| 500 | |
| 501 | /* |
| 502 | * Initialize everything |
| 503 | */ |
| 504 | |
| 505 | void |
| 506 | ng_btsocket_l2cap_raw_init(void) |
| 507 | { |
| 508 | int error = 0; |
| 509 | |
| 510 | ng_btsocket_l2cap_raw_node = NULL; |
| 511 | ng_btsocket_l2cap_raw_debug_level = NG_BTSOCKET_WARN_LEVEL; |
| 512 | ng_btsocket_l2cap_raw_ioctl_timeout = 5; |
| 513 | |
| 514 | /* Register Netgraph node type */ |
| 515 | error = ng_newtype(&typestruct); |
| 516 | if (error != 0) { |
| 517 | NG_BTSOCKET_L2CAP_RAW_ALERT( |
| 518 | "%s: Could not register Netgraph node type, error=%d\n", __func__, error); |
| 519 | |
| 520 | return; |
| 521 | } |
| 522 | |
| 523 | /* Create Netgrapg node */ |
| 524 | error = ng_make_node_common(&typestruct, &ng_btsocket_l2cap_raw_node); |
| 525 | if (error != 0) { |
| 526 | NG_BTSOCKET_L2CAP_RAW_ALERT( |
| 527 | "%s: Could not create Netgraph node, error=%d\n", __func__, error); |
| 528 | |
| 529 | ng_btsocket_l2cap_raw_node = NULL; |
| 530 | |
| 531 | return; |
| 532 | } |
| 533 | |
| 534 | error = ng_name_node(ng_btsocket_l2cap_raw_node, |
| 535 | NG_BTSOCKET_L2CAP_RAW_NODE_TYPE); |
| 536 | if (error != 0) { |
| 537 | NG_BTSOCKET_L2CAP_RAW_ALERT( |
| 538 | "%s: Could not name Netgraph node, error=%d\n", __func__, error); |
| 539 | |
| 540 | NG_NODE_UNREF(ng_btsocket_l2cap_raw_node); |
| 541 | ng_btsocket_l2cap_raw_node = NULL; |
| 542 | |
| 543 | return; |
| 544 | } |
| 545 | |
| 546 | /* Create input queue */ |
| 547 | NG_BT_ITEMQ_INIT(&ng_btsocket_l2cap_raw_queue, ifqmaxlen); |
| 548 | mtx_init(&ng_btsocket_l2cap_raw_queue_mtx, |
| 549 | "btsocks_l2cap_raw_queue_mtx", NULL, MTX_DEF); |
| 550 | TASK_INIT(&ng_btsocket_l2cap_raw_queue_task, 0, |
| 551 | ng_btsocket_l2cap_raw_input, NULL); |
| 552 | |
| 553 | /* Create list of sockets */ |
| 554 | LIST_INIT(&ng_btsocket_l2cap_raw_sockets); |
| 555 | mtx_init(&ng_btsocket_l2cap_raw_sockets_mtx, |
| 556 | "btsocks_l2cap_raw_sockets_mtx", NULL, MTX_DEF); |
| 557 | |
| 558 | /* Tokens */ |
| 559 | ng_btsocket_l2cap_raw_token = 0; |
| 560 | mtx_init(&ng_btsocket_l2cap_raw_token_mtx, |
| 561 | "btsocks_l2cap_raw_token_mtx", NULL, MTX_DEF); |
| 562 | |
| 563 | /* Routing table */ |
| 564 | LIST_INIT(&ng_btsocket_l2cap_raw_rt); |
| 565 | mtx_init(&ng_btsocket_l2cap_raw_rt_mtx, |
| 566 | "btsocks_l2cap_raw_rt_mtx", NULL, MTX_DEF); |
| 567 | TASK_INIT(&ng_btsocket_l2cap_raw_rt_task, 0, |
| 568 | ng_btsocket_l2cap_raw_rtclean, NULL); |
| 569 | } /* ng_btsocket_l2cap_raw_init */ |
| 570 | |
| 571 | /* |
| 572 | * Abort connection on socket |
| 573 | */ |
| 574 | |
| 575 | void |
| 576 | ng_btsocket_l2cap_raw_abort(struct socket *so) |
| 577 | { |
| 578 | |
| 579 | (void)ng_btsocket_l2cap_raw_disconnect(so); |
| 580 | } /* ng_btsocket_l2cap_raw_abort */ |
| 581 | |
| 582 | void |
| 583 | ng_btsocket_l2cap_raw_close(struct socket *so) |
| 584 | { |
| 585 | |
| 586 | (void)ng_btsocket_l2cap_raw_disconnect(so); |
| 587 | } /* ng_btsocket_l2cap_raw_close */ |
| 588 | |
| 589 | /* |
| 590 | * Create and attach new socket |
| 591 | */ |
| 592 | |
| 593 | int |
| 594 | ng_btsocket_l2cap_raw_attach(struct socket *so, int proto, struct thread *td) |
| 595 | { |
| 596 | ng_btsocket_l2cap_raw_pcb_p pcb = so2l2cap_raw_pcb(so); |
| 597 | int error; |
| 598 | |
| 599 | if (pcb != NULL) |
| 600 | return (EISCONN); |
| 601 | |
| 602 | if (ng_btsocket_l2cap_raw_node == NULL) |
| 603 | return (EPROTONOSUPPORT); |
| 604 | if (so->so_type != SOCK_RAW) |
| 605 | return (ESOCKTNOSUPPORT); |
| 606 | |
| 607 | /* Reserve send and receive space if it is not reserved yet */ |
| 608 | error = soreserve(so, NG_BTSOCKET_L2CAP_RAW_SENDSPACE, |
| 609 | NG_BTSOCKET_L2CAP_RAW_RECVSPACE); |
| 610 | if (error != 0) |
| 611 | return (error); |
| 612 | |
| 613 | /* Allocate the PCB */ |
| 614 | pcb = kmalloc(sizeof(*pcb), M_NETGRAPH_BTSOCKET_L2CAP_RAW, |
| 615 | M_WAITOK | M_NULLOK | M_ZERO); |
| 616 | if (pcb == NULL) |
| 617 | return (ENOMEM); |
| 618 | |
| 619 | /* Link the PCB and the socket */ |
| 620 | so->so_pcb = (caddr_t) pcb; |
| 621 | pcb->so = so; |
| 622 | |
| 623 | if (priv_check(td, PRIV_NETBLUETOOTH_RAW) == 0) |
| 624 | pcb->flags |= NG_BTSOCKET_L2CAP_RAW_PRIVILEGED; |
| 625 | |
| 626 | mtx_init(&pcb->pcb_mtx, "btsocks_l2cap_raw_pcb_mtx", NULL, MTX_DEF); |
| 627 | |
| 628 | /* Add the PCB to the list */ |
| 629 | mtx_lock(&ng_btsocket_l2cap_raw_sockets_mtx); |
| 630 | LIST_INSERT_HEAD(&ng_btsocket_l2cap_raw_sockets, pcb, next); |
| 631 | mtx_unlock(&ng_btsocket_l2cap_raw_sockets_mtx); |
| 632 | |
| 633 | return (0); |
| 634 | } /* ng_btsocket_l2cap_raw_attach */ |
| 635 | |
| 636 | /* |
| 637 | * Bind socket |
| 638 | */ |
| 639 | |
| 640 | int |
| 641 | ng_btsocket_l2cap_raw_bind(struct socket *so, struct sockaddr *nam, |
| 642 | struct thread *td) |
| 643 | { |
| 644 | ng_btsocket_l2cap_raw_pcb_t *pcb = so2l2cap_raw_pcb(so); |
| 645 | struct sockaddr_l2cap *sa = (struct sockaddr_l2cap *) nam; |
| 646 | ng_btsocket_l2cap_rtentry_t *rt = NULL; |
| 647 | |
| 648 | if (pcb == NULL) |
| 649 | return (EINVAL); |
| 650 | if (ng_btsocket_l2cap_raw_node == NULL) |
| 651 | return (EINVAL); |
| 652 | |
| 653 | if (sa == NULL) |
| 654 | return (EINVAL); |
| 655 | if (sa->l2cap_family != AF_BLUETOOTH) |
| 656 | return (EAFNOSUPPORT); |
| 657 | if (sa->l2cap_len != sizeof(*sa)) |
| 658 | return (EINVAL); |
| 659 | |
| 660 | if (bcmp(&sa->l2cap_bdaddr, NG_HCI_BDADDR_ANY, |
| 661 | sizeof(sa->l2cap_bdaddr)) != 0) { |
| 662 | mtx_lock(&ng_btsocket_l2cap_raw_rt_mtx); |
| 663 | |
| 664 | LIST_FOREACH(rt, &ng_btsocket_l2cap_raw_rt, next) { |
| 665 | if (rt->hook == NULL || NG_HOOK_NOT_VALID(rt->hook)) |
| 666 | continue; |
| 667 | |
| 668 | if (bcmp(&sa->l2cap_bdaddr, &rt->src, |
| 669 | sizeof(rt->src)) == 0) |
| 670 | break; |
| 671 | } |
| 672 | |
| 673 | mtx_unlock(&ng_btsocket_l2cap_raw_rt_mtx); |
| 674 | |
| 675 | if (rt == NULL) |
| 676 | return (ENETDOWN); |
| 677 | } else |
| 678 | rt = NULL; |
| 679 | |
| 680 | mtx_lock(&pcb->pcb_mtx); |
| 681 | bcopy(&sa->l2cap_bdaddr, &pcb->src, sizeof(pcb->src)); |
| 682 | pcb->rt = rt; |
| 683 | mtx_unlock(&pcb->pcb_mtx); |
| 684 | |
| 685 | return (0); |
| 686 | } /* ng_btsocket_l2cap_raw_bind */ |
| 687 | |
| 688 | /* |
| 689 | * Connect socket |
| 690 | */ |
| 691 | |
| 692 | int |
| 693 | ng_btsocket_l2cap_raw_connect(struct socket *so, struct sockaddr *nam, |
| 694 | struct thread *td) |
| 695 | { |
| 696 | ng_btsocket_l2cap_raw_pcb_t *pcb = so2l2cap_raw_pcb(so); |
| 697 | struct sockaddr_l2cap *sa = (struct sockaddr_l2cap *) nam; |
| 698 | ng_btsocket_l2cap_rtentry_t *rt = NULL; |
| 699 | int error; |
| 700 | |
| 701 | if (pcb == NULL) |
| 702 | return (EINVAL); |
| 703 | if (ng_btsocket_l2cap_raw_node == NULL) |
| 704 | return (EINVAL); |
| 705 | |
| 706 | if (sa == NULL) |
| 707 | return (EINVAL); |
| 708 | if (sa->l2cap_family != AF_BLUETOOTH) |
| 709 | return (EAFNOSUPPORT); |
| 710 | if (sa->l2cap_len != sizeof(*sa)) |
| 711 | return (EINVAL); |
| 712 | if (bcmp(&sa->l2cap_bdaddr, NG_HCI_BDADDR_ANY, sizeof(bdaddr_t)) == 0) |
| 713 | return (EINVAL); |
| 714 | |
| 715 | mtx_lock(&pcb->pcb_mtx); |
| 716 | |
| 717 | bcopy(&sa->l2cap_bdaddr, &pcb->dst, sizeof(pcb->dst)); |
| 718 | |
| 719 | if (bcmp(&pcb->src, &pcb->dst, sizeof(pcb->src)) == 0) { |
| 720 | mtx_unlock(&pcb->pcb_mtx); |
| 721 | |
| 722 | return (EADDRNOTAVAIL); |
| 723 | } |
| 724 | |
| 725 | /* |
| 726 | * If there is route already - use it |
| 727 | */ |
| 728 | |
| 729 | if (pcb->rt != NULL) { |
| 730 | soisconnected(so); |
| 731 | mtx_unlock(&pcb->pcb_mtx); |
| 732 | |
| 733 | return (0); |
| 734 | } |
| 735 | |
| 736 | /* |
| 737 | * Find the first hook that does not match specified destination address |
| 738 | */ |
| 739 | |
| 740 | mtx_lock(&ng_btsocket_l2cap_raw_rt_mtx); |
| 741 | |
| 742 | LIST_FOREACH(rt, &ng_btsocket_l2cap_raw_rt, next) { |
| 743 | if (rt->hook == NULL || NG_HOOK_NOT_VALID(rt->hook)) |
| 744 | continue; |
| 745 | |
| 746 | if (bcmp(&pcb->dst, &rt->src, sizeof(rt->src)) != 0) |
| 747 | break; |
| 748 | } |
| 749 | |
| 750 | if (rt != NULL) { |
| 751 | soisconnected(so); |
| 752 | |
| 753 | pcb->rt = rt; |
| 754 | bcopy(&rt->src, &pcb->src, sizeof(pcb->src)); |
| 755 | |
| 756 | error = 0; |
| 757 | } else |
| 758 | error = ENETDOWN; |
| 759 | |
| 760 | mtx_unlock(&ng_btsocket_l2cap_raw_rt_mtx); |
| 761 | mtx_unlock(&pcb->pcb_mtx); |
| 762 | |
| 763 | return (error); |
| 764 | } /* ng_btsocket_l2cap_raw_connect */ |
| 765 | |
| 766 | /* |
| 767 | * Process ioctl's calls on socket |
| 768 | */ |
| 769 | |
| 770 | int |
| 771 | ng_btsocket_l2cap_raw_control(struct socket *so, u_long cmd, caddr_t data, |
| 772 | struct ifnet *ifp, struct thread *td) |
| 773 | { |
| 774 | ng_btsocket_l2cap_raw_pcb_p pcb = so2l2cap_raw_pcb(so); |
| 775 | struct ng_mesg *msg = NULL; |
| 776 | int error = 0; |
| 777 | |
| 778 | if (pcb == NULL) |
| 779 | return (EINVAL); |
| 780 | if (ng_btsocket_l2cap_raw_node == NULL) |
| 781 | return (EINVAL); |
| 782 | |
| 783 | mtx_lock(&pcb->pcb_mtx); |
| 784 | |
| 785 | /* Check if we route info */ |
| 786 | if (pcb->rt == NULL) { |
| 787 | mtx_unlock(&pcb->pcb_mtx); |
| 788 | return (EHOSTUNREACH); |
| 789 | } |
| 790 | |
| 791 | /* Check if we have pending ioctl() */ |
| 792 | if (pcb->token != 0) { |
| 793 | mtx_unlock(&pcb->pcb_mtx); |
| 794 | return (EBUSY); |
| 795 | } |
| 796 | |
| 797 | switch (cmd) { |
| 798 | case SIOC_L2CAP_NODE_GET_FLAGS: { |
| 799 | struct ng_btsocket_l2cap_raw_node_flags *p = |
| 800 | (struct ng_btsocket_l2cap_raw_node_flags *) data; |
| 801 | |
| 802 | error = ng_btsocket_l2cap_raw_send_sync_ngmsg(pcb, |
| 803 | NGM_L2CAP_NODE_GET_FLAGS, |
| 804 | &p->flags, sizeof(p->flags)); |
| 805 | } break; |
| 806 | |
| 807 | case SIOC_L2CAP_NODE_GET_DEBUG: { |
| 808 | struct ng_btsocket_l2cap_raw_node_debug *p = |
| 809 | (struct ng_btsocket_l2cap_raw_node_debug *) data; |
| 810 | |
| 811 | error = ng_btsocket_l2cap_raw_send_sync_ngmsg(pcb, |
| 812 | NGM_L2CAP_NODE_GET_DEBUG, |
| 813 | &p->debug, sizeof(p->debug)); |
| 814 | } break; |
| 815 | |
| 816 | case SIOC_L2CAP_NODE_SET_DEBUG: { |
| 817 | struct ng_btsocket_l2cap_raw_node_debug *p = |
| 818 | (struct ng_btsocket_l2cap_raw_node_debug *) data; |
| 819 | |
| 820 | if (pcb->flags & NG_BTSOCKET_L2CAP_RAW_PRIVILEGED) |
| 821 | error = ng_btsocket_l2cap_raw_send_ngmsg(pcb->rt->hook, |
| 822 | NGM_L2CAP_NODE_SET_DEBUG, |
| 823 | &p->debug, sizeof(p->debug)); |
| 824 | else |
| 825 | error = EPERM; |
| 826 | } break; |
| 827 | |
| 828 | case SIOC_L2CAP_NODE_GET_CON_LIST: { |
| 829 | struct ng_btsocket_l2cap_raw_con_list *p = |
| 830 | (struct ng_btsocket_l2cap_raw_con_list *) data; |
| 831 | ng_l2cap_node_con_list_ep *p1 = NULL; |
| 832 | ng_l2cap_node_con_ep *p2 = NULL; |
| 833 | |
| 834 | if (p->num_connections == 0 || |
| 835 | p->num_connections > NG_L2CAP_MAX_CON_NUM || |
| 836 | p->connections == NULL) { |
| 837 | error = EINVAL; |
| 838 | break; |
| 839 | } |
| 840 | |
| 841 | NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_NODE_GET_CON_LIST, |
| 842 | 0, M_WAITOK | M_NULLOK); |
| 843 | if (msg == NULL) { |
| 844 | error = ENOMEM; |
| 845 | break; |
| 846 | } |
| 847 | ng_btsocket_l2cap_raw_get_token(&msg->header.token); |
| 848 | pcb->token = msg->header.token; |
| 849 | pcb->msg = NULL; |
| 850 | |
| 851 | NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_raw_node, msg, |
| 852 | pcb->rt->hook, 0); |
| 853 | if (error != 0) { |
| 854 | pcb->token = 0; |
| 855 | break; |
| 856 | } |
| 857 | |
| 858 | error = msleep(&pcb->msg, &pcb->pcb_mtx, PZERO|PCATCH, "l2ctl", |
| 859 | ng_btsocket_l2cap_raw_ioctl_timeout * hz); |
| 860 | pcb->token = 0; |
| 861 | |
| 862 | if (error != 0) |
| 863 | break; |
| 864 | |
| 865 | if (pcb->msg != NULL && |
| 866 | pcb->msg->header.cmd == NGM_L2CAP_NODE_GET_CON_LIST) { |
| 867 | /* Return data back to user space */ |
| 868 | p1 = (ng_l2cap_node_con_list_ep *)(pcb->msg->data); |
| 869 | p2 = (ng_l2cap_node_con_ep *)(p1 + 1); |
| 870 | |
| 871 | p->num_connections = min(p->num_connections, |
| 872 | p1->num_connections); |
| 873 | if (p->num_connections > 0) |
| 874 | error = copyout((caddr_t) p2, |
| 875 | (caddr_t) p->connections, |
| 876 | p->num_connections * sizeof(*p2)); |
| 877 | } else |
| 878 | error = EINVAL; |
| 879 | |
| 880 | NG_FREE_MSG(pcb->msg); /* checks for != NULL */ |
| 881 | } break; |
| 882 | |
| 883 | case SIOC_L2CAP_NODE_GET_CHAN_LIST: { |
| 884 | struct ng_btsocket_l2cap_raw_chan_list *p = |
| 885 | (struct ng_btsocket_l2cap_raw_chan_list *) data; |
| 886 | ng_l2cap_node_chan_list_ep *p1 = NULL; |
| 887 | ng_l2cap_node_chan_ep *p2 = NULL; |
| 888 | |
| 889 | if (p->num_channels == 0 || |
| 890 | p->num_channels > NG_L2CAP_MAX_CHAN_NUM || |
| 891 | p->channels == NULL) { |
| 892 | error = EINVAL; |
| 893 | break; |
| 894 | } |
| 895 | |
| 896 | NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, |
| 897 | NGM_L2CAP_NODE_GET_CHAN_LIST, 0, M_WAITOK | M_NULLOK); |
| 898 | if (msg == NULL) { |
| 899 | error = ENOMEM; |
| 900 | break; |
| 901 | } |
| 902 | ng_btsocket_l2cap_raw_get_token(&msg->header.token); |
| 903 | pcb->token = msg->header.token; |
| 904 | pcb->msg = NULL; |
| 905 | |
| 906 | NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_raw_node, msg, |
| 907 | pcb->rt->hook, 0); |
| 908 | if (error != 0) { |
| 909 | pcb->token = 0; |
| 910 | break; |
| 911 | } |
| 912 | |
| 913 | error = msleep(&pcb->msg, &pcb->pcb_mtx, PZERO|PCATCH, "l2ctl", |
| 914 | ng_btsocket_l2cap_raw_ioctl_timeout * hz); |
| 915 | pcb->token = 0; |
| 916 | |
| 917 | if (error != 0) |
| 918 | break; |
| 919 | |
| 920 | if (pcb->msg != NULL && |
| 921 | pcb->msg->header.cmd == NGM_L2CAP_NODE_GET_CHAN_LIST) { |
| 922 | /* Return data back to user space */ |
| 923 | p1 = (ng_l2cap_node_chan_list_ep *)(pcb->msg->data); |
| 924 | p2 = (ng_l2cap_node_chan_ep *)(p1 + 1); |
| 925 | |
| 926 | p->num_channels = min(p->num_channels, |
| 927 | p1->num_channels); |
| 928 | if (p->num_channels > 0) |
| 929 | error = copyout((caddr_t) p2, |
| 930 | (caddr_t) p->channels, |
| 931 | p->num_channels * sizeof(*p2)); |
| 932 | } else |
| 933 | error = EINVAL; |
| 934 | |
| 935 | NG_FREE_MSG(pcb->msg); /* checks for != NULL */ |
| 936 | } break; |
| 937 | |
| 938 | case SIOC_L2CAP_L2CA_PING: { |
| 939 | struct ng_btsocket_l2cap_raw_ping *p = |
| 940 | (struct ng_btsocket_l2cap_raw_ping *) data; |
| 941 | ng_l2cap_l2ca_ping_ip *ip = NULL; |
| 942 | ng_l2cap_l2ca_ping_op *op = NULL; |
| 943 | |
| 944 | if (!(pcb->flags & NG_BTSOCKET_L2CAP_RAW_PRIVILEGED)) { |
| 945 | error = EPERM; |
| 946 | break; |
| 947 | } |
| 948 | |
| 949 | if ((p->echo_size != 0 && p->echo_data == NULL) || |
| 950 | p->echo_size > NG_L2CAP_MAX_ECHO_SIZE) { |
| 951 | error = EINVAL; |
| 952 | break; |
| 953 | } |
| 954 | |
| 955 | NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, |
| 956 | NGM_L2CAP_L2CA_PING, sizeof(*ip) + p->echo_size, |
| 957 | M_WAITOK | M_NULLOK); |
| 958 | if (msg == NULL) { |
| 959 | error = ENOMEM; |
| 960 | break; |
| 961 | } |
| 962 | ng_btsocket_l2cap_raw_get_token(&msg->header.token); |
| 963 | pcb->token = msg->header.token; |
| 964 | pcb->msg = NULL; |
| 965 | |
| 966 | ip = (ng_l2cap_l2ca_ping_ip *)(msg->data); |
| 967 | bcopy(&pcb->dst, &ip->bdaddr, sizeof(ip->bdaddr)); |
| 968 | ip->echo_size = p->echo_size; |
| 969 | |
| 970 | if (ip->echo_size > 0) { |
| 971 | error = copyin(p->echo_data, ip + 1, p->echo_size); |
| 972 | if (error != 0) { |
| 973 | NG_FREE_MSG(msg); |
| 974 | pcb->token = 0; |
| 975 | break; |
| 976 | } |
| 977 | } |
| 978 | |
| 979 | NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_raw_node, msg, |
| 980 | pcb->rt->hook, 0); |
| 981 | if (error != 0) { |
| 982 | pcb->token = 0; |
| 983 | break; |
| 984 | } |
| 985 | |
| 986 | error = msleep(&pcb->msg, &pcb->pcb_mtx, PZERO|PCATCH, "l2ctl", |
| 987 | bluetooth_l2cap_rtx_timeout()); |
| 988 | pcb->token = 0; |
| 989 | |
| 990 | if (error != 0) |
| 991 | break; |
| 992 | |
| 993 | if (pcb->msg != NULL && |
| 994 | pcb->msg->header.cmd == NGM_L2CAP_L2CA_PING) { |
| 995 | /* Return data back to the user space */ |
| 996 | op = (ng_l2cap_l2ca_ping_op *)(pcb->msg->data); |
| 997 | p->result = op->result; |
| 998 | p->echo_size = min(p->echo_size, op->echo_size); |
| 999 | |
| 1000 | if (p->echo_size > 0) |
| 1001 | error = copyout(op + 1, p->echo_data, |
| 1002 | p->echo_size); |
| 1003 | } else |
| 1004 | error = EINVAL; |
| 1005 | |
| 1006 | NG_FREE_MSG(pcb->msg); /* checks for != NULL */ |
| 1007 | } break; |
| 1008 | |
| 1009 | case SIOC_L2CAP_L2CA_GET_INFO: { |
| 1010 | struct ng_btsocket_l2cap_raw_get_info *p = |
| 1011 | (struct ng_btsocket_l2cap_raw_get_info *) data; |
| 1012 | ng_l2cap_l2ca_get_info_ip *ip = NULL; |
| 1013 | ng_l2cap_l2ca_get_info_op *op = NULL; |
| 1014 | |
| 1015 | if (!(pcb->flags & NG_BTSOCKET_L2CAP_RAW_PRIVILEGED)) { |
| 1016 | error = EPERM; |
| 1017 | break; |
| 1018 | } |
| 1019 | |
| 1020 | if (p->info_size != 0 && p->info_data == NULL) { |
| 1021 | error = EINVAL; |
| 1022 | break; |
| 1023 | } |
| 1024 | |
| 1025 | NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, |
| 1026 | NGM_L2CAP_L2CA_GET_INFO, sizeof(*ip) + p->info_size, |
| 1027 | M_WAITOK | M_NULLOK); |
| 1028 | if (msg == NULL) { |
| 1029 | error = ENOMEM; |
| 1030 | break; |
| 1031 | } |
| 1032 | ng_btsocket_l2cap_raw_get_token(&msg->header.token); |
| 1033 | pcb->token = msg->header.token; |
| 1034 | pcb->msg = NULL; |
| 1035 | |
| 1036 | ip = (ng_l2cap_l2ca_get_info_ip *)(msg->data); |
| 1037 | bcopy(&pcb->dst, &ip->bdaddr, sizeof(ip->bdaddr)); |
| 1038 | ip->info_type = p->info_type; |
| 1039 | |
| 1040 | NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_raw_node, msg, |
| 1041 | pcb->rt->hook, 0); |
| 1042 | if (error != 0) { |
| 1043 | pcb->token = 0; |
| 1044 | break; |
| 1045 | } |
| 1046 | |
| 1047 | error = msleep(&pcb->msg, &pcb->pcb_mtx, PZERO|PCATCH, "l2ctl", |
| 1048 | bluetooth_l2cap_rtx_timeout()); |
| 1049 | pcb->token = 0; |
| 1050 | |
| 1051 | if (error != 0) |
| 1052 | break; |
| 1053 | |
| 1054 | if (pcb->msg != NULL && |
| 1055 | pcb->msg->header.cmd == NGM_L2CAP_L2CA_GET_INFO) { |
| 1056 | /* Return data back to the user space */ |
| 1057 | op = (ng_l2cap_l2ca_get_info_op *)(pcb->msg->data); |
| 1058 | p->result = op->result; |
| 1059 | p->info_size = min(p->info_size, op->info_size); |
| 1060 | |
| 1061 | if (p->info_size > 0) |
| 1062 | error = copyout(op + 1, p->info_data, |
| 1063 | p->info_size); |
| 1064 | } else |
| 1065 | error = EINVAL; |
| 1066 | |
| 1067 | NG_FREE_MSG(pcb->msg); /* checks for != NULL */ |
| 1068 | } break; |
| 1069 | |
| 1070 | case SIOC_L2CAP_NODE_GET_AUTO_DISCON_TIMO: { |
| 1071 | struct ng_btsocket_l2cap_raw_auto_discon_timo *p = |
| 1072 | (struct ng_btsocket_l2cap_raw_auto_discon_timo *) data; |
| 1073 | |
| 1074 | error = ng_btsocket_l2cap_raw_send_sync_ngmsg(pcb, |
| 1075 | NGM_L2CAP_NODE_GET_AUTO_DISCON_TIMO, |
| 1076 | &p->timeout, sizeof(p->timeout)); |
| 1077 | } break; |
| 1078 | |
| 1079 | case SIOC_L2CAP_NODE_SET_AUTO_DISCON_TIMO: { |
| 1080 | struct ng_btsocket_l2cap_raw_auto_discon_timo *p = |
| 1081 | (struct ng_btsocket_l2cap_raw_auto_discon_timo *) data; |
| 1082 | |
| 1083 | if (pcb->flags & NG_BTSOCKET_L2CAP_RAW_PRIVILEGED) |
| 1084 | error = ng_btsocket_l2cap_raw_send_ngmsg(pcb->rt->hook, |
| 1085 | NGM_L2CAP_NODE_SET_AUTO_DISCON_TIMO, |
| 1086 | &p->timeout, sizeof(p->timeout)); |
| 1087 | else |
| 1088 | error = EPERM; |
| 1089 | } break; |
| 1090 | |
| 1091 | default: |
| 1092 | error = EINVAL; |
| 1093 | break; |
| 1094 | } |
| 1095 | |
| 1096 | mtx_unlock(&pcb->pcb_mtx); |
| 1097 | |
| 1098 | return (error); |
| 1099 | } /* ng_btsocket_l2cap_raw_control */ |
| 1100 | |
| 1101 | /* |
| 1102 | * Detach and destroy socket |
| 1103 | */ |
| 1104 | |
| 1105 | void |
| 1106 | ng_btsocket_l2cap_raw_detach(struct socket *so) |
| 1107 | { |
| 1108 | ng_btsocket_l2cap_raw_pcb_p pcb = so2l2cap_raw_pcb(so); |
| 1109 | |
| 1110 | KASSERT(pcb != NULL, ("nt_btsocket_l2cap_raw_detach: pcb == NULL")); |
| 1111 | if (ng_btsocket_l2cap_raw_node == NULL) |
| 1112 | return; |
| 1113 | |
| 1114 | mtx_lock(&ng_btsocket_l2cap_raw_sockets_mtx); |
| 1115 | mtx_lock(&pcb->pcb_mtx); |
| 1116 | |
| 1117 | LIST_REMOVE(pcb, next); |
| 1118 | |
| 1119 | mtx_unlock(&pcb->pcb_mtx); |
| 1120 | mtx_unlock(&ng_btsocket_l2cap_raw_sockets_mtx); |
| 1121 | |
| 1122 | mtx_destroy(&pcb->pcb_mtx); |
| 1123 | |
| 1124 | bzero(pcb, sizeof(*pcb)); |
| 1125 | kfree(pcb, M_NETGRAPH_BTSOCKET_L2CAP_RAW); |
| 1126 | |
| 1127 | so->so_pcb = NULL; |
| 1128 | } /* ng_btsocket_l2cap_raw_detach */ |
| 1129 | |
| 1130 | /* |
| 1131 | * Disconnect socket |
| 1132 | */ |
| 1133 | |
| 1134 | int |
| 1135 | ng_btsocket_l2cap_raw_disconnect(struct socket *so) |
| 1136 | { |
| 1137 | ng_btsocket_l2cap_raw_pcb_p pcb = so2l2cap_raw_pcb(so); |
| 1138 | |
| 1139 | if (pcb == NULL) |
| 1140 | return (EINVAL); |
| 1141 | if (ng_btsocket_l2cap_raw_node == NULL) |
| 1142 | return (EINVAL); |
| 1143 | |
| 1144 | mtx_lock(&pcb->pcb_mtx); |
| 1145 | pcb->rt = NULL; |
| 1146 | soisdisconnected(so); |
| 1147 | mtx_unlock(&pcb->pcb_mtx); |
| 1148 | |
| 1149 | return (0); |
| 1150 | } /* ng_btsocket_l2cap_raw_disconnect */ |
| 1151 | |
| 1152 | /* |
| 1153 | * Get peer address |
| 1154 | */ |
| 1155 | |
| 1156 | int |
| 1157 | ng_btsocket_l2cap_raw_peeraddr(struct socket *so, struct sockaddr **nam) |
| 1158 | { |
| 1159 | ng_btsocket_l2cap_raw_pcb_p pcb = so2l2cap_raw_pcb(so); |
| 1160 | struct sockaddr_l2cap sa; |
| 1161 | |
| 1162 | if (pcb == NULL) |
| 1163 | return (EINVAL); |
| 1164 | if (ng_btsocket_l2cap_raw_node == NULL) |
| 1165 | return (EINVAL); |
| 1166 | |
| 1167 | mtx_lock(&pcb->pcb_mtx); |
| 1168 | bcopy(&pcb->dst, &sa.l2cap_bdaddr, sizeof(sa.l2cap_bdaddr)); |
| 1169 | mtx_unlock(&pcb->pcb_mtx); |
| 1170 | |
| 1171 | sa.l2cap_psm = 0; |
| 1172 | sa.l2cap_len = sizeof(sa); |
| 1173 | sa.l2cap_family = AF_BLUETOOTH; |
| 1174 | |
| 1175 | *nam = sodupsockaddr((struct sockaddr *) &sa, M_WAITOK | M_NULLOK); |
| 1176 | |
| 1177 | return ((*nam == NULL)? ENOMEM : 0); |
| 1178 | } /* ng_btsocket_l2cap_raw_peeraddr */ |
| 1179 | |
| 1180 | /* |
| 1181 | * Send data to socket |
| 1182 | */ |
| 1183 | |
| 1184 | int |
| 1185 | ng_btsocket_l2cap_raw_send(struct socket *so, int flags, struct mbuf *m, |
| 1186 | struct sockaddr *nam, struct mbuf *control, struct thread *td) |
| 1187 | { |
| 1188 | NG_FREE_M(m); /* Checks for m != NULL */ |
| 1189 | NG_FREE_M(control); |
| 1190 | |
| 1191 | return (EOPNOTSUPP); |
| 1192 | } /* ng_btsocket_l2cap_raw_send */ |
| 1193 | |
| 1194 | /* |
| 1195 | * Get socket address |
| 1196 | */ |
| 1197 | |
| 1198 | int |
| 1199 | ng_btsocket_l2cap_raw_sockaddr(struct socket *so, struct sockaddr **nam) |
| 1200 | { |
| 1201 | ng_btsocket_l2cap_raw_pcb_p pcb = so2l2cap_raw_pcb(so); |
| 1202 | struct sockaddr_l2cap sa; |
| 1203 | |
| 1204 | if (pcb == NULL) |
| 1205 | return (EINVAL); |
| 1206 | if (ng_btsocket_l2cap_raw_node == NULL) |
| 1207 | return (EINVAL); |
| 1208 | |
| 1209 | mtx_lock(&pcb->pcb_mtx); |
| 1210 | bcopy(&pcb->src, &sa.l2cap_bdaddr, sizeof(sa.l2cap_bdaddr)); |
| 1211 | mtx_unlock(&pcb->pcb_mtx); |
| 1212 | |
| 1213 | sa.l2cap_psm = 0; |
| 1214 | sa.l2cap_len = sizeof(sa); |
| 1215 | sa.l2cap_family = AF_BLUETOOTH; |
| 1216 | |
| 1217 | *nam = sodupsockaddr((struct sockaddr *) &sa, M_WAITOK | M_NULLOK); |
| 1218 | |
| 1219 | return ((*nam == NULL)? ENOMEM : 0); |
| 1220 | } /* ng_btsocket_l2cap_raw_sockaddr */ |
| 1221 | |
| 1222 | /* |
| 1223 | * Get next token |
| 1224 | */ |
| 1225 | |
| 1226 | static void |
| 1227 | ng_btsocket_l2cap_raw_get_token(u_int32_t *token) |
| 1228 | { |
| 1229 | mtx_lock(&ng_btsocket_l2cap_raw_token_mtx); |
| 1230 | |
| 1231 | if (++ ng_btsocket_l2cap_raw_token == 0) |
| 1232 | ng_btsocket_l2cap_raw_token = 1; |
| 1233 | |
| 1234 | *token = ng_btsocket_l2cap_raw_token; |
| 1235 | |
| 1236 | mtx_unlock(&ng_btsocket_l2cap_raw_token_mtx); |
| 1237 | } /* ng_btsocket_l2cap_raw_get_token */ |
| 1238 | |
| 1239 | /* |
| 1240 | * Send Netgraph message to the node - do not expect reply |
| 1241 | */ |
| 1242 | |
| 1243 | static int |
| 1244 | ng_btsocket_l2cap_raw_send_ngmsg(hook_p hook, int cmd, void *arg, int arglen) |
| 1245 | { |
| 1246 | struct ng_mesg *msg = NULL; |
| 1247 | int error = 0; |
| 1248 | |
| 1249 | NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, cmd, arglen, M_WAITOK | M_NULLOK); |
| 1250 | if (msg == NULL) |
| 1251 | return (ENOMEM); |
| 1252 | |
| 1253 | if (arg != NULL && arglen > 0) |
| 1254 | bcopy(arg, msg->data, arglen); |
| 1255 | |
| 1256 | NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_raw_node, msg, hook, 0); |
| 1257 | |
| 1258 | return (error); |
| 1259 | } /* ng_btsocket_l2cap_raw_send_ngmsg */ |
| 1260 | |
| 1261 | /* |
| 1262 | * Send Netgraph message to the node (no data) and wait for reply |
| 1263 | */ |
| 1264 | |
| 1265 | static int |
| 1266 | ng_btsocket_l2cap_raw_send_sync_ngmsg(ng_btsocket_l2cap_raw_pcb_p pcb, |
| 1267 | int cmd, void *rsp, int rsplen) |
| 1268 | { |
| 1269 | struct ng_mesg *msg = NULL; |
| 1270 | int error = 0; |
| 1271 | |
| 1272 | mtx_assert(&pcb->pcb_mtx, MA_OWNED); |
| 1273 | |
| 1274 | NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, cmd, 0, M_WAITOK | M_NULLOK); |
| 1275 | if (msg == NULL) |
| 1276 | return (ENOMEM); |
| 1277 | |
| 1278 | ng_btsocket_l2cap_raw_get_token(&msg->header.token); |
| 1279 | pcb->token = msg->header.token; |
| 1280 | pcb->msg = NULL; |
| 1281 | |
| 1282 | NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_raw_node, msg, |
| 1283 | pcb->rt->hook, 0); |
| 1284 | if (error != 0) { |
| 1285 | pcb->token = 0; |
| 1286 | return (error); |
| 1287 | } |
| 1288 | |
| 1289 | error = msleep(&pcb->msg, &pcb->pcb_mtx, PZERO|PCATCH, "l2ctl", |
| 1290 | ng_btsocket_l2cap_raw_ioctl_timeout * hz); |
| 1291 | pcb->token = 0; |
| 1292 | |
| 1293 | if (error != 0) |
| 1294 | return (error); |
| 1295 | |
| 1296 | if (pcb->msg != NULL && pcb->msg->header.cmd == cmd) |
| 1297 | bcopy(pcb->msg->data, rsp, rsplen); |
| 1298 | else |
| 1299 | error = EINVAL; |
| 1300 | |
| 1301 | NG_FREE_MSG(pcb->msg); /* checks for != NULL */ |
| 1302 | |
| 1303 | return (0); |
| 1304 | } /* ng_btsocket_l2cap_raw_send_sync_ngmsg */ |
| 1305 | |