Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /********************************************************************* |
| 2 | * |
| 3 | * Filename: iriap.c |
| 4 | * Version: 0.8 |
| 5 | * Description: Information Access Protocol (IAP) |
| 6 | * Status: Experimental. |
| 7 | * Author: Dag Brattli <dagb@cs.uit.no> |
| 8 | * Created at: Thu Aug 21 00:02:07 1997 |
| 9 | * Modified at: Sat Dec 25 16:42:42 1999 |
| 10 | * Modified by: Dag Brattli <dagb@cs.uit.no> |
| 11 | * |
| 12 | * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>, |
| 13 | * All Rights Reserved. |
| 14 | * Copyright (c) 2000-2003 Jean Tourrilhes <jt@hpl.hp.com> |
| 15 | * |
| 16 | * This program is free software; you can redistribute it and/or |
| 17 | * modify it under the terms of the GNU General Public License as |
| 18 | * published by the Free Software Foundation; either version 2 of |
| 19 | * the License, or (at your option) any later version. |
| 20 | * |
Jan Engelhardt | 96de0e2 | 2007-10-19 23:21:04 +0200 | [diff] [blame] | 21 | * Neither Dag Brattli nor University of Tromsø admit liability nor |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | * provide warranty for any of this software. This material is |
| 23 | * provided "AS-IS" and at no charge. |
| 24 | * |
| 25 | ********************************************************************/ |
| 26 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/module.h> |
| 28 | #include <linux/types.h> |
| 29 | #include <linux/skbuff.h> |
Al Viro | d7fe0f2 | 2006-12-03 23:15:30 -0500 | [diff] [blame] | 30 | #include <linux/fs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/string.h> |
| 32 | #include <linux/init.h> |
| 33 | #include <linux/seq_file.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 34 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
| 36 | #include <asm/byteorder.h> |
| 37 | #include <asm/unaligned.h> |
| 38 | |
| 39 | #include <net/irda/irda.h> |
| 40 | #include <net/irda/irttp.h> |
| 41 | #include <net/irda/irlmp.h> |
| 42 | #include <net/irda/irias_object.h> |
| 43 | #include <net/irda/iriap_event.h> |
| 44 | #include <net/irda/iriap.h> |
| 45 | |
| 46 | #ifdef CONFIG_IRDA_DEBUG |
| 47 | /* FIXME: This one should go in irlmp.c */ |
Jan Engelhardt | 36cbd3d | 2009-08-05 10:42:58 -0700 | [diff] [blame] | 48 | static const char *const ias_charset_types[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | "CS_ASCII", |
| 50 | "CS_ISO_8859_1", |
| 51 | "CS_ISO_8859_2", |
| 52 | "CS_ISO_8859_3", |
| 53 | "CS_ISO_8859_4", |
| 54 | "CS_ISO_8859_5", |
| 55 | "CS_ISO_8859_6", |
| 56 | "CS_ISO_8859_7", |
| 57 | "CS_ISO_8859_8", |
| 58 | "CS_ISO_8859_9", |
| 59 | "CS_UNICODE" |
| 60 | }; |
| 61 | #endif /* CONFIG_IRDA_DEBUG */ |
| 62 | |
| 63 | static hashbin_t *iriap = NULL; |
| 64 | static void *service_handle; |
| 65 | |
| 66 | static void __iriap_close(struct iriap_cb *self); |
| 67 | static int iriap_register_lsap(struct iriap_cb *self, __u8 slsap_sel, int mode); |
| 68 | static void iriap_disconnect_indication(void *instance, void *sap, |
| 69 | LM_REASON reason, struct sk_buff *skb); |
| 70 | static void iriap_connect_indication(void *instance, void *sap, |
| 71 | struct qos_info *qos, __u32 max_sdu_size, |
| 72 | __u8 max_header_size, |
| 73 | struct sk_buff *skb); |
| 74 | static void iriap_connect_confirm(void *instance, void *sap, |
| 75 | struct qos_info *qos, |
| 76 | __u32 max_sdu_size, __u8 max_header_size, |
| 77 | struct sk_buff *skb); |
| 78 | static int iriap_data_indication(void *instance, void *sap, |
| 79 | struct sk_buff *skb); |
| 80 | |
| 81 | static void iriap_watchdog_timer_expired(void *data); |
| 82 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 83 | static inline void iriap_start_watchdog_timer(struct iriap_cb *self, |
| 84 | int timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | { |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 86 | irda_start_timer(&self->watchdog_timer, timeout, self, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | iriap_watchdog_timer_expired); |
| 88 | } |
| 89 | |
| 90 | /* |
| 91 | * Function iriap_init (void) |
| 92 | * |
| 93 | * Initializes the IrIAP layer, called by the module initialization code |
| 94 | * in irmod.c |
| 95 | */ |
| 96 | int __init iriap_init(void) |
| 97 | { |
| 98 | struct ias_object *obj; |
| 99 | struct iriap_cb *server; |
| 100 | __u8 oct_seq[6]; |
| 101 | __u16 hints; |
| 102 | |
| 103 | /* Allocate master array */ |
| 104 | iriap = hashbin_new(HB_LOCK); |
| 105 | if (!iriap) |
| 106 | return -ENOMEM; |
| 107 | |
| 108 | /* Object repository - defined in irias_object.c */ |
| 109 | irias_objects = hashbin_new(HB_LOCK); |
| 110 | if (!irias_objects) { |
| 111 | IRDA_WARNING("%s: Can't allocate irias_objects hashbin!\n", |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 112 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | hashbin_delete(iriap, NULL); |
| 114 | return -ENOMEM; |
| 115 | } |
| 116 | |
| 117 | /* |
| 118 | * Register some default services for IrLMP |
| 119 | */ |
| 120 | hints = irlmp_service_to_hint(S_COMPUTER); |
| 121 | service_handle = irlmp_register_service(hints); |
| 122 | |
| 123 | /* Register the Device object with LM-IAS */ |
| 124 | obj = irias_new_object("Device", IAS_DEVICE_ID); |
| 125 | irias_add_string_attrib(obj, "DeviceName", "Linux", IAS_KERNEL_ATTR); |
| 126 | |
| 127 | oct_seq[0] = 0x01; /* Version 1 */ |
| 128 | oct_seq[1] = 0x00; /* IAS support bits */ |
| 129 | oct_seq[2] = 0x00; /* LM-MUX support bits */ |
| 130 | #ifdef CONFIG_IRDA_ULTRA |
| 131 | oct_seq[2] |= 0x04; /* Connectionless Data support */ |
| 132 | #endif |
| 133 | irias_add_octseq_attrib(obj, "IrLMPSupport", oct_seq, 3, |
| 134 | IAS_KERNEL_ATTR); |
| 135 | irias_insert_object(obj); |
| 136 | |
| 137 | /* |
| 138 | * Register server support with IrLMP so we can accept incoming |
| 139 | * connections |
| 140 | */ |
| 141 | server = iriap_open(LSAP_IAS, IAS_SERVER, NULL, NULL); |
| 142 | if (!server) { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 143 | IRDA_DEBUG(0, "%s(), unable to open server\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | return -1; |
| 145 | } |
| 146 | iriap_register_lsap(server, LSAP_IAS, IAS_SERVER); |
| 147 | |
| 148 | return 0; |
| 149 | } |
| 150 | |
| 151 | /* |
| 152 | * Function iriap_cleanup (void) |
| 153 | * |
| 154 | * Initializes the IrIAP layer, called by the module cleanup code in |
| 155 | * irmod.c |
| 156 | */ |
Samuel Ortiz | 75a69ac | 2007-07-18 02:16:30 -0700 | [diff] [blame] | 157 | void iriap_cleanup(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | { |
| 159 | irlmp_unregister_service(service_handle); |
| 160 | |
| 161 | hashbin_delete(iriap, (FREE_FUNC) __iriap_close); |
| 162 | hashbin_delete(irias_objects, (FREE_FUNC) __irias_delete_object); |
| 163 | } |
| 164 | |
| 165 | /* |
| 166 | * Function iriap_open (void) |
| 167 | * |
| 168 | * Opens an instance of the IrIAP layer, and registers with IrLMP |
| 169 | */ |
| 170 | struct iriap_cb *iriap_open(__u8 slsap_sel, int mode, void *priv, |
| 171 | CONFIRM_CALLBACK callback) |
| 172 | { |
| 173 | struct iriap_cb *self; |
| 174 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 175 | IRDA_DEBUG(2, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
Arnaldo Carvalho de Melo | b3ab09f | 2006-11-21 01:18:33 -0200 | [diff] [blame] | 177 | self = kzalloc(sizeof(*self), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | if (!self) { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 179 | IRDA_WARNING("%s: Unable to kmalloc!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | return NULL; |
| 181 | } |
| 182 | |
| 183 | /* |
| 184 | * Initialize instance |
| 185 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
| 187 | self->magic = IAS_MAGIC; |
| 188 | self->mode = mode; |
| 189 | if (mode == IAS_CLIENT) |
| 190 | iriap_register_lsap(self, slsap_sel, mode); |
| 191 | |
| 192 | self->confirm = callback; |
| 193 | self->priv = priv; |
| 194 | |
| 195 | /* iriap_getvaluebyclass_request() will construct packets before |
| 196 | * we connect, so this must have a sane value... Jean II */ |
| 197 | self->max_header_size = LMP_MAX_HEADER; |
| 198 | |
| 199 | init_timer(&self->watchdog_timer); |
| 200 | |
| 201 | hashbin_insert(iriap, (irda_queue_t *) self, (long) self, NULL); |
| 202 | |
| 203 | /* Initialize state machines */ |
| 204 | iriap_next_client_state(self, S_DISCONNECT); |
| 205 | iriap_next_call_state(self, S_MAKE_CALL); |
| 206 | iriap_next_server_state(self, R_DISCONNECT); |
| 207 | iriap_next_r_connect_state(self, R_WAITING); |
| 208 | |
| 209 | return self; |
| 210 | } |
| 211 | EXPORT_SYMBOL(iriap_open); |
| 212 | |
| 213 | /* |
| 214 | * Function __iriap_close (self) |
| 215 | * |
| 216 | * Removes (deallocates) the IrIAP instance |
| 217 | * |
| 218 | */ |
| 219 | static void __iriap_close(struct iriap_cb *self) |
| 220 | { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 221 | IRDA_DEBUG(4, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
| 223 | IRDA_ASSERT(self != NULL, return;); |
| 224 | IRDA_ASSERT(self->magic == IAS_MAGIC, return;); |
| 225 | |
| 226 | del_timer(&self->watchdog_timer); |
| 227 | |
| 228 | if (self->request_skb) |
| 229 | dev_kfree_skb(self->request_skb); |
| 230 | |
| 231 | self->magic = 0; |
| 232 | |
| 233 | kfree(self); |
| 234 | } |
| 235 | |
| 236 | /* |
| 237 | * Function iriap_close (void) |
| 238 | * |
| 239 | * Closes IrIAP and deregisters with IrLMP |
| 240 | */ |
| 241 | void iriap_close(struct iriap_cb *self) |
| 242 | { |
| 243 | struct iriap_cb *entry; |
| 244 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 245 | IRDA_DEBUG(2, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | |
| 247 | IRDA_ASSERT(self != NULL, return;); |
| 248 | IRDA_ASSERT(self->magic == IAS_MAGIC, return;); |
| 249 | |
| 250 | if (self->lsap) { |
| 251 | irlmp_close_lsap(self->lsap); |
| 252 | self->lsap = NULL; |
| 253 | } |
| 254 | |
| 255 | entry = (struct iriap_cb *) hashbin_remove(iriap, (long) self, NULL); |
| 256 | IRDA_ASSERT(entry == self, return;); |
| 257 | |
| 258 | __iriap_close(self); |
| 259 | } |
| 260 | EXPORT_SYMBOL(iriap_close); |
| 261 | |
| 262 | static int iriap_register_lsap(struct iriap_cb *self, __u8 slsap_sel, int mode) |
| 263 | { |
| 264 | notify_t notify; |
| 265 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 266 | IRDA_DEBUG(2, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | |
| 268 | irda_notify_init(¬ify); |
| 269 | notify.connect_confirm = iriap_connect_confirm; |
| 270 | notify.connect_indication = iriap_connect_indication; |
| 271 | notify.disconnect_indication = iriap_disconnect_indication; |
| 272 | notify.data_indication = iriap_data_indication; |
| 273 | notify.instance = self; |
| 274 | if (mode == IAS_CLIENT) |
| 275 | strcpy(notify.name, "IrIAS cli"); |
| 276 | else |
| 277 | strcpy(notify.name, "IrIAS srv"); |
| 278 | |
| 279 | self->lsap = irlmp_open_lsap(slsap_sel, ¬ify, 0); |
| 280 | if (self->lsap == NULL) { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 281 | IRDA_ERROR("%s: Unable to allocated LSAP!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | return -1; |
| 283 | } |
| 284 | self->slsap_sel = self->lsap->slsap_sel; |
| 285 | |
| 286 | return 0; |
| 287 | } |
| 288 | |
| 289 | /* |
| 290 | * Function iriap_disconnect_indication (handle, reason) |
| 291 | * |
| 292 | * Got disconnect, so clean up everything associated with this connection |
| 293 | * |
| 294 | */ |
| 295 | static void iriap_disconnect_indication(void *instance, void *sap, |
| 296 | LM_REASON reason, |
| 297 | struct sk_buff *skb) |
| 298 | { |
| 299 | struct iriap_cb *self; |
| 300 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 301 | IRDA_DEBUG(4, "%s(), reason=%s\n", __func__, irlmp_reasons[reason]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | |
Joe Perches | ea11073 | 2011-06-13 16:21:26 +0000 | [diff] [blame] | 303 | self = instance; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | |
| 305 | IRDA_ASSERT(self != NULL, return;); |
| 306 | IRDA_ASSERT(self->magic == IAS_MAGIC, return;); |
| 307 | |
| 308 | IRDA_ASSERT(iriap != NULL, return;); |
| 309 | |
| 310 | del_timer(&self->watchdog_timer); |
| 311 | |
| 312 | /* Not needed */ |
| 313 | if (skb) |
| 314 | dev_kfree_skb(skb); |
| 315 | |
| 316 | if (self->mode == IAS_CLIENT) { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 317 | IRDA_DEBUG(4, "%s(), disconnect as client\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | |
| 319 | |
| 320 | iriap_do_client_event(self, IAP_LM_DISCONNECT_INDICATION, |
| 321 | NULL); |
| 322 | /* |
| 323 | * Inform service user that the request failed by sending |
| 324 | * it a NULL value. Warning, the client might close us, so |
| 325 | * remember no to use self anymore after calling confirm |
| 326 | */ |
| 327 | if (self->confirm) |
| 328 | self->confirm(IAS_DISCONNECT, 0, NULL, self->priv); |
| 329 | } else { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 330 | IRDA_DEBUG(4, "%s(), disconnect as server\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | iriap_do_server_event(self, IAP_LM_DISCONNECT_INDICATION, |
| 332 | NULL); |
| 333 | iriap_close(self); |
| 334 | } |
| 335 | } |
| 336 | |
| 337 | /* |
| 338 | * Function iriap_disconnect_request (handle) |
| 339 | */ |
| 340 | static void iriap_disconnect_request(struct iriap_cb *self) |
| 341 | { |
| 342 | struct sk_buff *tx_skb; |
| 343 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 344 | IRDA_DEBUG(4, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | |
| 346 | IRDA_ASSERT(self != NULL, return;); |
| 347 | IRDA_ASSERT(self->magic == IAS_MAGIC, return;); |
| 348 | |
Samuel Ortiz | 1b0fee7 | 2006-09-27 20:06:44 -0700 | [diff] [blame] | 349 | tx_skb = alloc_skb(LMP_MAX_HEADER, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | if (tx_skb == NULL) { |
Samuel Ortiz | 1b0fee7 | 2006-09-27 20:06:44 -0700 | [diff] [blame] | 351 | IRDA_DEBUG(0, |
| 352 | "%s(), Could not allocate an sk_buff of length %d\n", |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 353 | __func__, LMP_MAX_HEADER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | return; |
| 355 | } |
| 356 | |
| 357 | /* |
| 358 | * Reserve space for MUX control and LAP header |
| 359 | */ |
| 360 | skb_reserve(tx_skb, LMP_MAX_HEADER); |
| 361 | |
| 362 | irlmp_disconnect_request(self->lsap, tx_skb); |
| 363 | } |
| 364 | |
| 365 | /* |
| 366 | * Function iriap_getvaluebyclass (addr, name, attr) |
| 367 | * |
Matt Mackall | 4a4efbd | 2006-01-03 13:27:11 +0100 | [diff] [blame] | 368 | * Retrieve all values from attribute in all objects with given class |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | * name |
| 370 | */ |
| 371 | int iriap_getvaluebyclass_request(struct iriap_cb *self, |
| 372 | __u32 saddr, __u32 daddr, |
| 373 | char *name, char *attr) |
| 374 | { |
| 375 | struct sk_buff *tx_skb; |
| 376 | int name_len, attr_len, skb_len; |
| 377 | __u8 *frame; |
| 378 | |
| 379 | IRDA_ASSERT(self != NULL, return -1;); |
| 380 | IRDA_ASSERT(self->magic == IAS_MAGIC, return -1;); |
| 381 | |
| 382 | /* Client must supply the destination device address */ |
| 383 | if (!daddr) |
| 384 | return -1; |
| 385 | |
| 386 | self->daddr = daddr; |
| 387 | self->saddr = saddr; |
| 388 | |
| 389 | /* |
| 390 | * Save operation, so we know what the later indication is about |
| 391 | */ |
| 392 | self->operation = GET_VALUE_BY_CLASS; |
| 393 | |
| 394 | /* Give ourselves 10 secs to finish this operation */ |
| 395 | iriap_start_watchdog_timer(self, 10*HZ); |
| 396 | |
| 397 | name_len = strlen(name); /* Up to IAS_MAX_CLASSNAME = 60 */ |
| 398 | attr_len = strlen(attr); /* Up to IAS_MAX_ATTRIBNAME = 60 */ |
| 399 | |
| 400 | skb_len = self->max_header_size+2+name_len+1+attr_len+4; |
Samuel Ortiz | 485fb2c | 2006-07-21 14:50:41 -0700 | [diff] [blame] | 401 | tx_skb = alloc_skb(skb_len, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | if (!tx_skb) |
| 403 | return -ENOMEM; |
| 404 | |
| 405 | /* Reserve space for MUX and LAP header */ |
| 406 | skb_reserve(tx_skb, self->max_header_size); |
| 407 | skb_put(tx_skb, 3+name_len+attr_len); |
| 408 | frame = tx_skb->data; |
| 409 | |
| 410 | /* Build frame */ |
| 411 | frame[0] = IAP_LST | GET_VALUE_BY_CLASS; |
| 412 | frame[1] = name_len; /* Insert length of name */ |
| 413 | memcpy(frame+2, name, name_len); /* Insert name */ |
| 414 | frame[2+name_len] = attr_len; /* Insert length of attr */ |
| 415 | memcpy(frame+3+name_len, attr, attr_len); /* Insert attr */ |
| 416 | |
| 417 | iriap_do_client_event(self, IAP_CALL_REQUEST_GVBC, tx_skb); |
| 418 | |
| 419 | /* Drop reference count - see state_s_disconnect(). */ |
| 420 | dev_kfree_skb(tx_skb); |
| 421 | |
| 422 | return 0; |
| 423 | } |
| 424 | EXPORT_SYMBOL(iriap_getvaluebyclass_request); |
| 425 | |
| 426 | /* |
| 427 | * Function iriap_getvaluebyclass_confirm (self, skb) |
| 428 | * |
| 429 | * Got result from GetValueByClass command. Parse it and return result |
| 430 | * to service user. |
| 431 | * |
| 432 | */ |
| 433 | static void iriap_getvaluebyclass_confirm(struct iriap_cb *self, |
| 434 | struct sk_buff *skb) |
| 435 | { |
| 436 | struct ias_value *value; |
| 437 | int charset; |
| 438 | __u32 value_len; |
| 439 | __u32 tmp_cpu32; |
| 440 | __u16 obj_id; |
| 441 | __u16 len; |
| 442 | __u8 type; |
| 443 | __u8 *fp; |
| 444 | int n; |
| 445 | |
| 446 | IRDA_ASSERT(self != NULL, return;); |
| 447 | IRDA_ASSERT(self->magic == IAS_MAGIC, return;); |
| 448 | IRDA_ASSERT(skb != NULL, return;); |
| 449 | |
| 450 | /* Initialize variables */ |
| 451 | fp = skb->data; |
| 452 | n = 2; |
| 453 | |
| 454 | /* Get length, MSB first */ |
Harvey Harrison | 260ffee | 2008-05-02 16:21:52 -0700 | [diff] [blame] | 455 | len = get_unaligned_be16(fp + n); |
| 456 | n += 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 458 | IRDA_DEBUG(4, "%s(), len=%d\n", __func__, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | |
| 460 | /* Get object ID, MSB first */ |
Harvey Harrison | 260ffee | 2008-05-02 16:21:52 -0700 | [diff] [blame] | 461 | obj_id = get_unaligned_be16(fp + n); |
| 462 | n += 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | |
| 464 | type = fp[n++]; |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 465 | IRDA_DEBUG(4, "%s(), Value type = %d\n", __func__, type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | |
| 467 | switch (type) { |
| 468 | case IAS_INTEGER: |
| 469 | memcpy(&tmp_cpu32, fp+n, 4); n += 4; |
| 470 | be32_to_cpus(&tmp_cpu32); |
| 471 | value = irias_new_integer_value(tmp_cpu32); |
| 472 | |
| 473 | /* Legal values restricted to 0x01-0x6f, page 15 irttp */ |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 474 | IRDA_DEBUG(4, "%s(), lsap=%d\n", __func__, value->t.integer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | break; |
| 476 | case IAS_STRING: |
| 477 | charset = fp[n++]; |
| 478 | |
| 479 | switch (charset) { |
| 480 | case CS_ASCII: |
| 481 | break; |
| 482 | /* case CS_ISO_8859_1: */ |
| 483 | /* case CS_ISO_8859_2: */ |
| 484 | /* case CS_ISO_8859_3: */ |
| 485 | /* case CS_ISO_8859_4: */ |
| 486 | /* case CS_ISO_8859_5: */ |
| 487 | /* case CS_ISO_8859_6: */ |
| 488 | /* case CS_ISO_8859_7: */ |
| 489 | /* case CS_ISO_8859_8: */ |
| 490 | /* case CS_ISO_8859_9: */ |
| 491 | /* case CS_UNICODE: */ |
| 492 | default: |
| 493 | IRDA_DEBUG(0, "%s(), charset %s, not supported\n", |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 494 | __func__, ias_charset_types[charset]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | |
| 496 | /* Aborting, close connection! */ |
| 497 | iriap_disconnect_request(self); |
| 498 | return; |
| 499 | /* break; */ |
| 500 | } |
| 501 | value_len = fp[n++]; |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 502 | IRDA_DEBUG(4, "%s(), strlen=%d\n", __func__, value_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | |
| 504 | /* Make sure the string is null-terminated */ |
Samuel Ortiz | 37f9fc4 | 2010-10-06 01:03:12 +0200 | [diff] [blame] | 505 | if (n + value_len < skb->len) |
| 506 | fp[n + value_len] = 0x00; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | IRDA_DEBUG(4, "Got string %s\n", fp+n); |
| 508 | |
| 509 | /* Will truncate to IAS_MAX_STRING bytes */ |
| 510 | value = irias_new_string_value(fp+n); |
| 511 | break; |
| 512 | case IAS_OCT_SEQ: |
Harvey Harrison | 260ffee | 2008-05-02 16:21:52 -0700 | [diff] [blame] | 513 | value_len = get_unaligned_be16(fp + n); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | n += 2; |
| 515 | |
| 516 | /* Will truncate to IAS_MAX_OCTET_STRING bytes */ |
| 517 | value = irias_new_octseq_value(fp+n, value_len); |
| 518 | break; |
| 519 | default: |
| 520 | value = irias_new_missing_value(); |
| 521 | break; |
| 522 | } |
| 523 | |
| 524 | /* Finished, close connection! */ |
| 525 | iriap_disconnect_request(self); |
| 526 | |
| 527 | /* Warning, the client might close us, so remember no to use self |
| 528 | * anymore after calling confirm |
| 529 | */ |
| 530 | if (self->confirm) |
| 531 | self->confirm(IAS_SUCCESS, obj_id, value, self->priv); |
| 532 | else { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 533 | IRDA_DEBUG(0, "%s(), missing handler!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | irias_delete_value(value); |
| 535 | } |
| 536 | } |
| 537 | |
| 538 | /* |
| 539 | * Function iriap_getvaluebyclass_response () |
| 540 | * |
| 541 | * Send answer back to remote LM-IAS |
| 542 | * |
| 543 | */ |
| 544 | static void iriap_getvaluebyclass_response(struct iriap_cb *self, |
| 545 | __u16 obj_id, |
| 546 | __u8 ret_code, |
| 547 | struct ias_value *value) |
| 548 | { |
| 549 | struct sk_buff *tx_skb; |
| 550 | int n; |
Al Viro | 448c31a | 2006-11-14 20:47:46 -0800 | [diff] [blame] | 551 | __be32 tmp_be32; |
Alexey Dobriyan | 405a42c | 2006-05-22 16:54:08 -0700 | [diff] [blame] | 552 | __be16 tmp_be16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | __u8 *fp; |
| 554 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 555 | IRDA_DEBUG(4, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | |
| 557 | IRDA_ASSERT(self != NULL, return;); |
| 558 | IRDA_ASSERT(self->magic == IAS_MAGIC, return;); |
| 559 | IRDA_ASSERT(value != NULL, return;); |
| 560 | IRDA_ASSERT(value->len <= 1024, return;); |
| 561 | |
| 562 | /* Initialize variables */ |
| 563 | n = 0; |
| 564 | |
| 565 | /* |
| 566 | * We must adjust the size of the response after the length of the |
| 567 | * value. We add 32 bytes because of the 6 bytes for the frame and |
| 568 | * max 5 bytes for the value coding. |
| 569 | */ |
Samuel Ortiz | 485fb2c | 2006-07-21 14:50:41 -0700 | [diff] [blame] | 570 | tx_skb = alloc_skb(value->len + self->max_header_size + 32, |
| 571 | GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | if (!tx_skb) |
| 573 | return; |
| 574 | |
| 575 | /* Reserve space for MUX and LAP header */ |
| 576 | skb_reserve(tx_skb, self->max_header_size); |
| 577 | skb_put(tx_skb, 6); |
| 578 | |
| 579 | fp = tx_skb->data; |
| 580 | |
| 581 | /* Build frame */ |
| 582 | fp[n++] = GET_VALUE_BY_CLASS | IAP_LST; |
| 583 | fp[n++] = ret_code; |
| 584 | |
| 585 | /* Insert list length (MSB first) */ |
YOSHIFUJI Hideaki | 6d82de9 | 2007-12-12 03:53:26 +0900 | [diff] [blame] | 586 | tmp_be16 = htons(0x0001); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | memcpy(fp+n, &tmp_be16, 2); n += 2; |
| 588 | |
| 589 | /* Insert object identifier ( MSB first) */ |
| 590 | tmp_be16 = cpu_to_be16(obj_id); |
| 591 | memcpy(fp+n, &tmp_be16, 2); n += 2; |
| 592 | |
| 593 | switch (value->type) { |
| 594 | case IAS_STRING: |
| 595 | skb_put(tx_skb, 3 + value->len); |
| 596 | fp[n++] = value->type; |
| 597 | fp[n++] = 0; /* ASCII */ |
| 598 | fp[n++] = (__u8) value->len; |
| 599 | memcpy(fp+n, value->t.string, value->len); n+=value->len; |
| 600 | break; |
| 601 | case IAS_INTEGER: |
| 602 | skb_put(tx_skb, 5); |
| 603 | fp[n++] = value->type; |
| 604 | |
| 605 | tmp_be32 = cpu_to_be32(value->t.integer); |
| 606 | memcpy(fp+n, &tmp_be32, 4); n += 4; |
| 607 | break; |
| 608 | case IAS_OCT_SEQ: |
| 609 | skb_put(tx_skb, 3 + value->len); |
| 610 | fp[n++] = value->type; |
| 611 | |
| 612 | tmp_be16 = cpu_to_be16(value->len); |
| 613 | memcpy(fp+n, &tmp_be16, 2); n += 2; |
| 614 | memcpy(fp+n, value->t.oct_seq, value->len); n+=value->len; |
| 615 | break; |
| 616 | case IAS_MISSING: |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 617 | IRDA_DEBUG( 3, "%s: sending IAS_MISSING\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | skb_put(tx_skb, 1); |
| 619 | fp[n++] = value->type; |
| 620 | break; |
| 621 | default: |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 622 | IRDA_DEBUG(0, "%s(), type not implemented!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | break; |
| 624 | } |
| 625 | iriap_do_r_connect_event(self, IAP_CALL_RESPONSE, tx_skb); |
| 626 | |
| 627 | /* Drop reference count - see state_r_execute(). */ |
| 628 | dev_kfree_skb(tx_skb); |
| 629 | } |
| 630 | |
| 631 | /* |
| 632 | * Function iriap_getvaluebyclass_indication (self, skb) |
| 633 | * |
| 634 | * getvaluebyclass is requested from peer LM-IAS |
| 635 | * |
| 636 | */ |
| 637 | static void iriap_getvaluebyclass_indication(struct iriap_cb *self, |
| 638 | struct sk_buff *skb) |
| 639 | { |
| 640 | struct ias_object *obj; |
| 641 | struct ias_attrib *attrib; |
| 642 | int name_len; |
| 643 | int attr_len; |
| 644 | char name[IAS_MAX_CLASSNAME + 1]; /* 60 bytes */ |
| 645 | char attr[IAS_MAX_ATTRIBNAME + 1]; /* 60 bytes */ |
| 646 | __u8 *fp; |
| 647 | int n; |
| 648 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 649 | IRDA_DEBUG(4, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | |
| 651 | IRDA_ASSERT(self != NULL, return;); |
| 652 | IRDA_ASSERT(self->magic == IAS_MAGIC, return;); |
| 653 | IRDA_ASSERT(skb != NULL, return;); |
| 654 | |
| 655 | fp = skb->data; |
| 656 | n = 1; |
| 657 | |
| 658 | name_len = fp[n++]; |
Dan Rosenberg | d370af0 | 2011-03-20 15:32:06 +0000 | [diff] [blame] | 659 | |
| 660 | IRDA_ASSERT(name_len < IAS_MAX_CLASSNAME + 1, return;); |
| 661 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | memcpy(name, fp+n, name_len); n+=name_len; |
| 663 | name[name_len] = '\0'; |
| 664 | |
| 665 | attr_len = fp[n++]; |
Dan Rosenberg | d370af0 | 2011-03-20 15:32:06 +0000 | [diff] [blame] | 666 | |
| 667 | IRDA_ASSERT(attr_len < IAS_MAX_ATTRIBNAME + 1, return;); |
| 668 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | memcpy(attr, fp+n, attr_len); n+=attr_len; |
| 670 | attr[attr_len] = '\0'; |
| 671 | |
| 672 | IRDA_DEBUG(4, "LM-IAS: Looking up %s: %s\n", name, attr); |
| 673 | obj = irias_find_object(name); |
| 674 | |
| 675 | if (obj == NULL) { |
| 676 | IRDA_DEBUG(2, "LM-IAS: Object %s not found\n", name); |
| 677 | iriap_getvaluebyclass_response(self, 0x1235, IAS_CLASS_UNKNOWN, |
| 678 | &irias_missing); |
| 679 | return; |
| 680 | } |
| 681 | IRDA_DEBUG(4, "LM-IAS: found %s, id=%d\n", obj->name, obj->id); |
| 682 | |
| 683 | attrib = irias_find_attrib(obj, attr); |
| 684 | if (attrib == NULL) { |
| 685 | IRDA_DEBUG(2, "LM-IAS: Attribute %s not found\n", attr); |
| 686 | iriap_getvaluebyclass_response(self, obj->id, |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 687 | IAS_ATTRIB_UNKNOWN, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | &irias_missing); |
| 689 | return; |
| 690 | } |
| 691 | |
| 692 | /* We have a match; send the value. */ |
| 693 | iriap_getvaluebyclass_response(self, obj->id, IAS_SUCCESS, |
| 694 | attrib->value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | } |
| 696 | |
| 697 | /* |
| 698 | * Function iriap_send_ack (void) |
| 699 | * |
| 700 | * Currently not used |
| 701 | * |
| 702 | */ |
| 703 | void iriap_send_ack(struct iriap_cb *self) |
| 704 | { |
| 705 | struct sk_buff *tx_skb; |
| 706 | __u8 *frame; |
| 707 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 708 | IRDA_DEBUG(2, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | |
| 710 | IRDA_ASSERT(self != NULL, return;); |
| 711 | IRDA_ASSERT(self->magic == IAS_MAGIC, return;); |
| 712 | |
Samuel Ortiz | 1b0fee7 | 2006-09-27 20:06:44 -0700 | [diff] [blame] | 713 | tx_skb = alloc_skb(LMP_MAX_HEADER + 1, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | if (!tx_skb) |
| 715 | return; |
| 716 | |
| 717 | /* Reserve space for MUX and LAP header */ |
| 718 | skb_reserve(tx_skb, self->max_header_size); |
| 719 | skb_put(tx_skb, 1); |
| 720 | frame = tx_skb->data; |
| 721 | |
| 722 | /* Build frame */ |
| 723 | frame[0] = IAP_LST | IAP_ACK | self->operation; |
| 724 | |
| 725 | irlmp_data_request(self->lsap, tx_skb); |
| 726 | } |
| 727 | |
| 728 | void iriap_connect_request(struct iriap_cb *self) |
| 729 | { |
| 730 | int ret; |
| 731 | |
| 732 | IRDA_ASSERT(self != NULL, return;); |
| 733 | IRDA_ASSERT(self->magic == IAS_MAGIC, return;); |
| 734 | |
| 735 | ret = irlmp_connect_request(self->lsap, LSAP_IAS, |
| 736 | self->saddr, self->daddr, |
| 737 | NULL, NULL); |
| 738 | if (ret < 0) { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 739 | IRDA_DEBUG(0, "%s(), connect failed!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | self->confirm(IAS_DISCONNECT, 0, NULL, self->priv); |
| 741 | } |
| 742 | } |
| 743 | |
| 744 | /* |
| 745 | * Function iriap_connect_confirm (handle, skb) |
| 746 | * |
| 747 | * LSAP connection confirmed! |
| 748 | * |
| 749 | */ |
| 750 | static void iriap_connect_confirm(void *instance, void *sap, |
| 751 | struct qos_info *qos, __u32 max_seg_size, |
| 752 | __u8 max_header_size, |
| 753 | struct sk_buff *skb) |
| 754 | { |
| 755 | struct iriap_cb *self; |
| 756 | |
Joe Perches | ea11073 | 2011-06-13 16:21:26 +0000 | [diff] [blame] | 757 | self = instance; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | |
| 759 | IRDA_ASSERT(self != NULL, return;); |
| 760 | IRDA_ASSERT(self->magic == IAS_MAGIC, return;); |
| 761 | IRDA_ASSERT(skb != NULL, return;); |
| 762 | |
| 763 | self->max_data_size = max_seg_size; |
| 764 | self->max_header_size = max_header_size; |
| 765 | |
| 766 | del_timer(&self->watchdog_timer); |
| 767 | |
| 768 | iriap_do_client_event(self, IAP_LM_CONNECT_CONFIRM, skb); |
| 769 | |
| 770 | /* Drop reference count - see state_s_make_call(). */ |
| 771 | dev_kfree_skb(skb); |
| 772 | } |
| 773 | |
| 774 | /* |
| 775 | * Function iriap_connect_indication ( handle, skb) |
| 776 | * |
| 777 | * Remote LM-IAS is requesting connection |
| 778 | * |
| 779 | */ |
| 780 | static void iriap_connect_indication(void *instance, void *sap, |
| 781 | struct qos_info *qos, __u32 max_seg_size, |
| 782 | __u8 max_header_size, |
| 783 | struct sk_buff *skb) |
| 784 | { |
| 785 | struct iriap_cb *self, *new; |
| 786 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 787 | IRDA_DEBUG(1, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | |
Joe Perches | ea11073 | 2011-06-13 16:21:26 +0000 | [diff] [blame] | 789 | self = instance; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | |
| 791 | IRDA_ASSERT(skb != NULL, return;); |
| 792 | IRDA_ASSERT(self != NULL, goto out;); |
| 793 | IRDA_ASSERT(self->magic == IAS_MAGIC, goto out;); |
| 794 | |
| 795 | /* Start new server */ |
| 796 | new = iriap_open(LSAP_IAS, IAS_SERVER, NULL, NULL); |
| 797 | if (!new) { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 798 | IRDA_DEBUG(0, "%s(), open failed\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | goto out; |
| 800 | } |
| 801 | |
| 802 | /* Now attach up the new "socket" */ |
| 803 | new->lsap = irlmp_dup(self->lsap, new); |
| 804 | if (!new->lsap) { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 805 | IRDA_DEBUG(0, "%s(), dup failed!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | goto out; |
| 807 | } |
| 808 | |
| 809 | new->max_data_size = max_seg_size; |
| 810 | new->max_header_size = max_header_size; |
| 811 | |
| 812 | /* Clean up the original one to keep it in listen state */ |
| 813 | irlmp_listen(self->lsap); |
| 814 | |
| 815 | iriap_do_server_event(new, IAP_LM_CONNECT_INDICATION, skb); |
| 816 | |
| 817 | out: |
| 818 | /* Drop reference count - see state_r_disconnect(). */ |
| 819 | dev_kfree_skb(skb); |
| 820 | } |
| 821 | |
| 822 | /* |
| 823 | * Function iriap_data_indication (handle, skb) |
| 824 | * |
| 825 | * Receives data from connection identified by handle from IrLMP |
| 826 | * |
| 827 | */ |
| 828 | static int iriap_data_indication(void *instance, void *sap, |
| 829 | struct sk_buff *skb) |
| 830 | { |
| 831 | struct iriap_cb *self; |
| 832 | __u8 *frame; |
| 833 | __u8 opcode; |
| 834 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 835 | IRDA_DEBUG(3, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | |
Joe Perches | ea11073 | 2011-06-13 16:21:26 +0000 | [diff] [blame] | 837 | self = instance; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | |
| 839 | IRDA_ASSERT(skb != NULL, return 0;); |
| 840 | IRDA_ASSERT(self != NULL, goto out;); |
| 841 | IRDA_ASSERT(self->magic == IAS_MAGIC, goto out;); |
| 842 | |
| 843 | frame = skb->data; |
| 844 | |
| 845 | if (self->mode == IAS_SERVER) { |
| 846 | /* Call server */ |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 847 | IRDA_DEBUG(4, "%s(), Calling server!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | iriap_do_r_connect_event(self, IAP_RECV_F_LST, skb); |
| 849 | goto out; |
| 850 | } |
| 851 | opcode = frame[0]; |
| 852 | if (~opcode & IAP_LST) { |
| 853 | IRDA_WARNING("%s:, IrIAS multiframe commands or " |
| 854 | "results is not implemented yet!\n", |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 855 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | goto out; |
| 857 | } |
| 858 | |
| 859 | /* Check for ack frames since they don't contain any data */ |
| 860 | if (opcode & IAP_ACK) { |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 861 | IRDA_DEBUG(0, "%s() Got ack frame!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | goto out; |
| 863 | } |
| 864 | |
| 865 | opcode &= ~IAP_LST; /* Mask away LST bit */ |
| 866 | |
| 867 | switch (opcode) { |
| 868 | case GET_INFO_BASE: |
| 869 | IRDA_DEBUG(0, "IrLMP GetInfoBaseDetails not implemented!\n"); |
| 870 | break; |
| 871 | case GET_VALUE_BY_CLASS: |
| 872 | iriap_do_call_event(self, IAP_RECV_F_LST, NULL); |
| 873 | |
| 874 | switch (frame[1]) { |
| 875 | case IAS_SUCCESS: |
| 876 | iriap_getvaluebyclass_confirm(self, skb); |
| 877 | break; |
| 878 | case IAS_CLASS_UNKNOWN: |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 879 | IRDA_DEBUG(1, "%s(), No such class!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | /* Finished, close connection! */ |
| 881 | iriap_disconnect_request(self); |
| 882 | |
| 883 | /* |
| 884 | * Warning, the client might close us, so remember |
| 885 | * no to use self anymore after calling confirm |
| 886 | */ |
| 887 | if (self->confirm) |
| 888 | self->confirm(IAS_CLASS_UNKNOWN, 0, NULL, |
| 889 | self->priv); |
| 890 | break; |
| 891 | case IAS_ATTRIB_UNKNOWN: |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 892 | IRDA_DEBUG(1, "%s(), No such attribute!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | /* Finished, close connection! */ |
| 894 | iriap_disconnect_request(self); |
| 895 | |
| 896 | /* |
| 897 | * Warning, the client might close us, so remember |
| 898 | * no to use self anymore after calling confirm |
| 899 | */ |
| 900 | if (self->confirm) |
| 901 | self->confirm(IAS_ATTRIB_UNKNOWN, 0, NULL, |
| 902 | self->priv); |
| 903 | break; |
| 904 | } |
| 905 | break; |
| 906 | default: |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 907 | IRDA_DEBUG(0, "%s(), Unknown op-code: %02x\n", __func__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | opcode); |
| 909 | break; |
| 910 | } |
| 911 | |
| 912 | out: |
| 913 | /* Cleanup - sub-calls will have done skb_get() as needed. */ |
| 914 | dev_kfree_skb(skb); |
| 915 | return 0; |
| 916 | } |
| 917 | |
| 918 | /* |
| 919 | * Function iriap_call_indication (self, skb) |
| 920 | * |
| 921 | * Received call to server from peer LM-IAS |
| 922 | * |
| 923 | */ |
| 924 | void iriap_call_indication(struct iriap_cb *self, struct sk_buff *skb) |
| 925 | { |
| 926 | __u8 *fp; |
| 927 | __u8 opcode; |
| 928 | |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 929 | IRDA_DEBUG(4, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | |
| 931 | IRDA_ASSERT(self != NULL, return;); |
| 932 | IRDA_ASSERT(self->magic == IAS_MAGIC, return;); |
| 933 | IRDA_ASSERT(skb != NULL, return;); |
| 934 | |
| 935 | fp = skb->data; |
| 936 | |
| 937 | opcode = fp[0]; |
| 938 | if (~opcode & 0x80) { |
Joe Perches | a572da4 | 2007-11-19 23:48:30 -0800 | [diff] [blame] | 939 | IRDA_WARNING("%s: IrIAS multiframe commands or results " |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 940 | "is not implemented yet!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | return; |
| 942 | } |
| 943 | opcode &= 0x7f; /* Mask away LST bit */ |
| 944 | |
| 945 | switch (opcode) { |
| 946 | case GET_INFO_BASE: |
| 947 | IRDA_WARNING("%s: GetInfoBaseDetails not implemented yet!\n", |
Harvey Harrison | 0dc4787 | 2008-03-05 20:47:47 -0800 | [diff] [blame] | 948 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | break; |
| 950 | case GET_VALUE_BY_CLASS: |
| 951 | iriap_getvaluebyclass_indication(self, skb); |
| 952 | break; |
| 953 | } |
| 954 | /* skb will be cleaned up in iriap_data_indication */ |
| 955 | } |
| 956 | |
| 957 | /* |
| 958 | * Function iriap_watchdog_timer_expired (data) |
| 959 | * |
| 960 | * Query has taken too long time, so abort |
| 961 | * |
| 962 | */ |
| 963 | static void iriap_watchdog_timer_expired(void *data) |
| 964 | { |
| 965 | struct iriap_cb *self = (struct iriap_cb *) data; |
| 966 | |
| 967 | IRDA_ASSERT(self != NULL, return;); |
| 968 | IRDA_ASSERT(self->magic == IAS_MAGIC, return;); |
| 969 | |
| 970 | /* iriap_close(self); */ |
| 971 | } |
| 972 | |
| 973 | #ifdef CONFIG_PROC_FS |
| 974 | |
Jan Engelhardt | 36cbd3d | 2009-08-05 10:42:58 -0700 | [diff] [blame] | 975 | static const char *const ias_value_types[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | "IAS_MISSING", |
| 977 | "IAS_INTEGER", |
| 978 | "IAS_OCT_SEQ", |
| 979 | "IAS_STRING" |
| 980 | }; |
| 981 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 982 | static inline struct ias_object *irias_seq_idx(loff_t pos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | { |
| 984 | struct ias_object *obj; |
| 985 | |
| 986 | for (obj = (struct ias_object *) hashbin_get_first(irias_objects); |
| 987 | obj; obj = (struct ias_object *) hashbin_get_next(irias_objects)) { |
| 988 | if (pos-- == 0) |
| 989 | break; |
| 990 | } |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 991 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | return obj; |
| 993 | } |
| 994 | |
| 995 | static void *irias_seq_start(struct seq_file *seq, loff_t *pos) |
| 996 | { |
| 997 | spin_lock_irq(&irias_objects->hb_spinlock); |
| 998 | |
| 999 | return *pos ? irias_seq_idx(*pos - 1) : SEQ_START_TOKEN; |
| 1000 | } |
| 1001 | |
| 1002 | static void *irias_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
| 1003 | { |
| 1004 | ++*pos; |
| 1005 | |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 1006 | return (v == SEQ_START_TOKEN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | ? (void *) hashbin_get_first(irias_objects) |
| 1008 | : (void *) hashbin_get_next(irias_objects); |
| 1009 | } |
| 1010 | |
| 1011 | static void irias_seq_stop(struct seq_file *seq, void *v) |
| 1012 | { |
| 1013 | spin_unlock_irq(&irias_objects->hb_spinlock); |
| 1014 | } |
| 1015 | |
| 1016 | static int irias_seq_show(struct seq_file *seq, void *v) |
| 1017 | { |
| 1018 | if (v == SEQ_START_TOKEN) |
| 1019 | seq_puts(seq, "LM-IAS Objects:\n"); |
| 1020 | else { |
| 1021 | struct ias_object *obj = v; |
| 1022 | struct ias_attrib *attrib; |
| 1023 | |
| 1024 | IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return -EINVAL;); |
| 1025 | |
| 1026 | seq_printf(seq, "name: %s, id=%d\n", |
| 1027 | obj->name, obj->id); |
| 1028 | |
| 1029 | /* Careful for priority inversions here ! |
| 1030 | * All other uses of attrib spinlock are independent of |
| 1031 | * the object spinlock, so we are safe. Jean II */ |
| 1032 | spin_lock(&obj->attribs->hb_spinlock); |
| 1033 | |
| 1034 | /* List all attributes for this object */ |
| 1035 | for (attrib = (struct ias_attrib *) hashbin_get_first(obj->attribs); |
| 1036 | attrib != NULL; |
| 1037 | attrib = (struct ias_attrib *) hashbin_get_next(obj->attribs)) { |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 1038 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | IRDA_ASSERT(attrib->magic == IAS_ATTRIB_MAGIC, |
| 1040 | goto outloop; ); |
| 1041 | |
| 1042 | seq_printf(seq, " - Attribute name: \"%s\", ", |
| 1043 | attrib->name); |
| 1044 | seq_printf(seq, "value[%s]: ", |
| 1045 | ias_value_types[attrib->value->type]); |
| 1046 | |
| 1047 | switch (attrib->value->type) { |
| 1048 | case IAS_INTEGER: |
| 1049 | seq_printf(seq, "%d\n", |
| 1050 | attrib->value->t.integer); |
| 1051 | break; |
| 1052 | case IAS_STRING: |
| 1053 | seq_printf(seq, "\"%s\"\n", |
| 1054 | attrib->value->t.string); |
| 1055 | break; |
| 1056 | case IAS_OCT_SEQ: |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 1057 | seq_printf(seq, "octet sequence (%d bytes)\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | attrib->value->len); |
| 1059 | break; |
| 1060 | case IAS_MISSING: |
| 1061 | seq_puts(seq, "missing\n"); |
| 1062 | break; |
| 1063 | default: |
YOSHIFUJI Hideaki | 6819bc2 | 2007-02-09 23:24:53 +0900 | [diff] [blame] | 1064 | seq_printf(seq, "type %d?\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | attrib->value->type); |
| 1066 | } |
| 1067 | seq_putc(seq, '\n'); |
| 1068 | |
| 1069 | } |
| 1070 | IRDA_ASSERT_LABEL(outloop:) |
| 1071 | spin_unlock(&obj->attribs->hb_spinlock); |
| 1072 | } |
| 1073 | |
| 1074 | return 0; |
| 1075 | } |
| 1076 | |
Philippe De Muyter | 56b3d97 | 2007-07-10 23:07:31 -0700 | [diff] [blame] | 1077 | static const struct seq_operations irias_seq_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | .start = irias_seq_start, |
| 1079 | .next = irias_seq_next, |
| 1080 | .stop = irias_seq_stop, |
| 1081 | .show = irias_seq_show, |
| 1082 | }; |
| 1083 | |
| 1084 | static int irias_seq_open(struct inode *inode, struct file *file) |
| 1085 | { |
| 1086 | IRDA_ASSERT( irias_objects != NULL, return -EINVAL;); |
| 1087 | |
| 1088 | return seq_open(file, &irias_seq_ops); |
| 1089 | } |
| 1090 | |
Arjan van de Ven | da7071d | 2007-02-12 00:55:36 -0800 | [diff] [blame] | 1091 | const struct file_operations irias_seq_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | .owner = THIS_MODULE, |
| 1093 | .open = irias_seq_open, |
| 1094 | .read = seq_read, |
| 1095 | .llseek = seq_lseek, |
| 1096 | .release = seq_release, |
| 1097 | }; |
| 1098 | |
| 1099 | #endif /* PROC_FS */ |