drivers/net/wireless/orinoco.c

   1 /* orinoco.c - (formerly known as dldwd_cs.c and orinoco_cs.c)
   2  *
   3  * A driver for Hermes or Prism 2 chipset based PCMCIA wireless
   4  * adaptors, with Lucent/Agere, Intersil or Symbol firmware.
   5  *
   6  * Current maintainers (as of 29 September 2003) are:
   7  *      Pavel Roskin <proski AT gnu.org>
   8  * and  David Gibson <hermes AT gibson.dropbear.id.au>
   9  *
  10  * (C) Copyright David Gibson, IBM Corporation 2001-2003.
  11  * Copyright (C) 2000 David Gibson, Linuxcare Australia.
  12  *      With some help from :
  13  * Copyright (C) 2001 Jean Tourrilhes, HP Labs
  14  * Copyright (C) 2001 Benjamin Herrenschmidt
  15  *
  16  * Based on dummy_cs.c 1.27 2000/06/12 21:27:25
  17  *
  18  * Portions based on wvlan_cs.c 1.0.6, Copyright Andreas Neuhaus <andy
  19  * AT fasta.fh-dortmund.de>
  20  *      http://www.stud.fh-dortmund.de/~andy/wvlan/
  21  *
  22  * The contents of this file are subject to the Mozilla Public License
  23  * Version 1.1 (the "License"); you may not use this file except in
  24  * compliance with the License. You may obtain a copy of the License
  25  * at http://www.mozilla.org/MPL/
  26  *
  27  * Software distributed under the License is distributed on an "AS IS"
  28  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
  29  * the License for the specific language governing rights and
  30  * limitations under the License.
  31  *
  32  * The initial developer of the original code is David A. Hinds
  33  * <dahinds AT users.sourceforge.net>.  Portions created by David
  34  * A. Hinds are Copyright (C) 1999 David A. Hinds.  All Rights
  35  * Reserved.
  36  *
  37  * Alternatively, the contents of this file may be used under the
  38  * terms of the GNU General Public License version 2 (the "GPL"), in
  39  * which case the provisions of the GPL are applicable instead of the
  40  * above.  If you wish to allow the use of your version of this file
  41  * only under the terms of the GPL and not to allow others to use your
  42  * version of this file under the MPL, indicate your decision by
  43  * deleting the provisions above and replace them with the notice and
  44  * other provisions required by the GPL.  If you do not delete the
  45  * provisions above, a recipient may use your version of this file
  46  * under either the MPL or the GPL.  */
  47
  48 /*
  49  * TODO
  50  *      o Handle de-encapsulation within network layer, provide 802.11
  51  *        headers (patch from Thomas 'Dent' Mirlacher)
  52  *      o Fix possible races in SPY handling.
  53  *      o Disconnect wireless extensions from fundamental configuration.
  54  *      o (maybe) Software WEP support (patch from Stano Meduna).
  55  *      o (maybe) Use multiple Tx buffers - driver handling queue
  56  *        rather than firmware.
  57  */
  58
  59 /* Locking and synchronization:
  60  *
  61  * The basic principle is that everything is serialized through a
  62  * single spinlock, priv->lock.  The lock is used in user, bh and irq
  63  * context, so when taken outside hardirq context it should always be
  64  * taken with interrupts disabled.  The lock protects both the
  65  * hardware and the struct orinoco_private.
  66  *
  67  * Another flag, priv->hw_unavailable indicates that the hardware is
  68  * unavailable for an extended period of time (e.g. suspended, or in
  69  * the middle of a hard reset).  This flag is protected by the
  70  * spinlock.  All code which touches the hardware should check the
  71  * flag after taking the lock, and if it is set, give up on whatever
  72  * they are doing and drop the lock again.  The orinoco_lock()
  73  * function handles this (it unlocks and returns -EBUSY if
  74  * hw_unavailable is non-zero).
  75  */
  76
  77 #define DRIVER_NAME "orinoco"
  78
  79 #include <linux/module.h>
  80 #include <linux/kernel.h>
  81 #include <linux/init.h>
  82 #include <linux/netdevice.h>
  83 #include <linux/etherdevice.h>
  84 #include <linux/ethtool.h>
  85 #include <linux/if_arp.h>
  86 #include <linux/wireless.h>
  87 #include <net/iw_handler.h>
  88 #include <net/ieee80211.h>
  89
  90 #include "hermes_rid.h"
  91 #include "orinoco.h"
  92
  93 /********************************************************************/
  94 /* Module information                                               */
  95 /********************************************************************/
  96
  97 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org> & David Gibson <hermes@gibson.dropbear.id.au>");
  98 MODULE_DESCRIPTION("Driver for Lucent Orinoco, Prism II based and similar wireless cards");
  99 MODULE_LICENSE("Dual MPL/GPL");
 100
 101 /* Level of debugging. Used in the macros in orinoco.h */
 102 #ifdef ORINOCO_DEBUG
 103 int orinoco_debug = ORINOCO_DEBUG;
 104 module_param(orinoco_debug, int, 0644);
 105 MODULE_PARM_DESC(orinoco_debug, "Debug level");
 106 EXPORT_SYMBOL(orinoco_debug);
 107 #endif
 108
 109 static int suppress_linkstatus; /* = 0 */
 110 module_param(suppress_linkstatus, bool, 0644);
 111 MODULE_PARM_DESC(suppress_linkstatus, "Don't log link status changes");
 112 static int ignore_disconnect; /* = 0 */
 113 module_param(ignore_disconnect, int, 0644);
 114 MODULE_PARM_DESC(ignore_disconnect, "Don't report lost link to the network layer");
 115
 116 static int force_monitor; /* = 0 */
 117 module_param(force_monitor, int, 0644);
 118 MODULE_PARM_DESC(force_monitor, "Allow monitor mode for all firmware versions");
 119
 120 /********************************************************************/
 121 /* Compile time configuration and compatibility stuff               */
 122 /********************************************************************/
 123
 124 /* We do this this way to avoid ifdefs in the actual code */
 125 #ifdef WIRELESS_SPY
 126 #define SPY_NUMBER(priv)        (priv->spy_data.spy_number)
 127 #else
 128 #define SPY_NUMBER(priv)        0
 129 #endif /* WIRELESS_SPY */
 130
 131 /********************************************************************/
 132 /* Internal constants                                               */
 133 /********************************************************************/
 134
 135 /* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */
 136 static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
 137 #define ENCAPS_OVERHEAD         (sizeof(encaps_hdr) + 2)
 138
 139 #define ORINOCO_MIN_MTU         256
 140 #define ORINOCO_MAX_MTU         (IEEE80211_DATA_LEN - ENCAPS_OVERHEAD)
 141
 142 #define SYMBOL_MAX_VER_LEN      (14)
 143 #define USER_BAP                0
 144 #define IRQ_BAP                 1
 145 #define MAX_IRQLOOPS_PER_IRQ    10
 146 #define MAX_IRQLOOPS_PER_JIFFY  (20000/HZ) /* Based on a guestimate of
 147                                             * how many events the
 148                                             * device could
 149                                             * legitimately generate */
 150 #define SMALL_KEY_SIZE          5
 151 #define LARGE_KEY_SIZE          13
 152 #define TX_NICBUF_SIZE_BUG      1585            /* Bug in Symbol firmware */
 153
 154 #define DUMMY_FID               0xFFFF
 155
 156 /*#define MAX_MULTICAST(priv)   (priv->firmware_type == FIRMWARE_TYPE_AGERE ? \
 157   HERMES_MAX_MULTICAST : 0)*/
 158 #define MAX_MULTICAST(priv)     (HERMES_MAX_MULTICAST)
 159
 160 #define ORINOCO_INTEN           (HERMES_EV_RX | HERMES_EV_ALLOC \
 161                                  | HERMES_EV_TX | HERMES_EV_TXEXC \
 162                                  | HERMES_EV_WTERR | HERMES_EV_INFO \
 163                                  | HERMES_EV_INFDROP )
 164
 165 #define MAX_RID_LEN 1024
 166
 167 static const struct iw_handler_def orinoco_handler_def;
 168 static const struct ethtool_ops orinoco_ethtool_ops;
 169
 170 /********************************************************************/
 171 /* Data tables                                                      */
 172 /********************************************************************/
 173
 174 /* The frequency of each channel in MHz */
 175 static const long channel_frequency[] = {
 176         2412, 2417, 2422, 2427, 2432, 2437, 2442,
 177         2447, 2452, 2457, 2462, 2467, 2472, 2484
 178 };
 179 #define NUM_CHANNELS ARRAY_SIZE(channel_frequency)
 180
 181 /* This tables gives the actual meanings of the bitrate IDs returned
 182  * by the firmware. */
 183 static struct {
 184         int bitrate; /* in 100s of kilobits */
 185         int automatic;
 186         u16 agere_txratectrl;
 187         u16 intersil_txratectrl;
 188 } bitrate_table[] = {
 189         {110, 1,  3, 15}, /* Entry 0 is the default */
 190         {10,  0,  1,  1},
 191         {10,  1,  1,  1},
 192         {20,  0,  2,  2},
 193         {20,  1,  6,  3},
 194         {55,  0,  4,  4},
 195         {55,  1,  7,  7},
 196         {110, 0,  5,  8},
 197 };
 198 #define BITRATE_TABLE_SIZE ARRAY_SIZE(bitrate_table)
 199
 200 /********************************************************************/
 201 /* Data types                                                       */
 202 /********************************************************************/
 203
 204 /* Beginning of the Tx descriptor, used in TxExc handling */
 205 struct hermes_txexc_data {
 206         struct hermes_tx_descriptor desc;
 207         __le16 frame_ctl;
 208         __le16 duration_id;
 209         u8 addr1[ETH_ALEN];
 210 } __attribute__ ((packed));
 211
 212 /* Rx frame header except compatibility 802.3 header */
 213 struct hermes_rx_descriptor {
 214         /* Control */
 215         __le16 status;
 216         __le32 time;
 217         u8 silence;
 218         u8 signal;
 219         u8 rate;
 220         u8 rxflow;
 221         __le32 reserved;
 222
 223         /* 802.11 header */
 224         __le16 frame_ctl;
 225         __le16 duration_id;
 226         u8 addr1[ETH_ALEN];
 227         u8 addr2[ETH_ALEN];
 228         u8 addr3[ETH_ALEN];
 229         __le16 seq_ctl;
 230         u8 addr4[ETH_ALEN];
 231
 232         /* Data length */
 233         __le16 data_len;
 234 } __attribute__ ((packed));
 235
 236 /********************************************************************/
 237 /* Function prototypes                                              */
 238 /********************************************************************/
 239
 240 static int __orinoco_program_rids(struct net_device *dev);
 241 static void __orinoco_set_multicast_list(struct net_device *dev);
 242
 243 /********************************************************************/
 244 /* Internal helper functions                                        */
 245 /********************************************************************/
 246
 247 static inline void set_port_type(struct orinoco_private *priv)
 248 {
 249         switch (priv->iw_mode) {
 250         case IW_MODE_INFRA:
 251                 priv->port_type = 1;
 252                 priv->createibss = 0;
 253                 break;
 254         case IW_MODE_ADHOC:
 255                 if (priv->prefer_port3) {
 256                         priv->port_type = 3;
 257                         priv->createibss = 0;
 258                 } else {
 259                         priv->port_type = priv->ibss_port;
 260                         priv->createibss = 1;
 261                 }
 262                 break;
 263         case IW_MODE_MONITOR:
 264                 priv->port_type = 3;
 265                 priv->createibss = 0;
 266                 break;
 267         default:
 268                 printk(KERN_ERR "%s: Invalid priv->iw_mode in set_port_type()\n",
 269                        priv->ndev->name);
 270         }
 271 }
 272
 273 /********************************************************************/
 274 /* Device methods                                                   */
 275 /********************************************************************/
 276
 277 static int orinoco_open(struct net_device *dev)
 278 {
 279         struct orinoco_private *priv = netdev_priv(dev);
 280         unsigned long flags;
 281         int err;
 282
 283         if (orinoco_lock(priv, &flags) != 0)
 284                 return -EBUSY;
 285
 286         err = __orinoco_up(dev);
 287
 288         if (! err)
 289                 priv->open = 1;
 290
 291         orinoco_unlock(priv, &flags);
 292
 293         return err;
 294 }
 295
 296 static int orinoco_stop(struct net_device *dev)
 297 {
 298         struct orinoco_private *priv = netdev_priv(dev);
 299         int err = 0;
 300
 301         /* We mustn't use orinoco_lock() here, because we need to be
 302            able to close the interface even if hw_unavailable is set
 303            (e.g. as we're released after a PC Card removal) */
 304         spin_lock_irq(&priv->lock);
 305
 306         priv->open = 0;
 307
 308         err = __orinoco_down(dev);
 309
 310         spin_unlock_irq(&priv->lock);
 311
 312         return err;
 313 }
 314
 315 static struct net_device_stats *orinoco_get_stats(struct net_device *dev)
 316 {
 317         struct orinoco_private *priv = netdev_priv(dev);
 318
 319         return &priv->stats;
 320 }
 321
 322 static struct iw_statistics *orinoco_get_wireless_stats(struct net_device *dev)
 323 {
 324         struct orinoco_private *priv = netdev_priv(dev);
 325         hermes_t *hw = &priv->hw;
 326         struct iw_statistics *wstats = &priv->wstats;
 327         int err;
 328         unsigned long flags;
 329
 330         if (! netif_device_present(dev)) {
 331                 printk(KERN_WARNING "%s: get_wireless_stats() called while device not present\n",
 332                        dev->name);
 333                 return NULL; /* FIXME: Can we do better than this? */
 334         }
 335
 336         /* If busy, return the old stats.  Returning NULL may cause
 337          * the interface to disappear from /proc/net/wireless */
 338         if (orinoco_lock(priv, &flags) != 0)
 339                 return wstats;
 340
 341         /* We can't really wait for the tallies inquiry command to
 342          * complete, so we just use the previous results and trigger
 343          * a new tallies inquiry command for next time - Jean II */
 344         /* FIXME: Really we should wait for the inquiry to come back -
 345          * as it is the stats we give don't make a whole lot of sense.
 346          * Unfortunately, it's not clear how to do that within the
 347          * wireless extensions framework: I think we're in user
 348          * context, but a lock seems to be held by the time we get in
 349          * here so we're not safe to sleep here. */
 350         hermes_inquire(hw, HERMES_INQ_TALLIES);
 351
 352         if (priv->iw_mode == IW_MODE_ADHOC) {
 353                 memset(&wstats->qual, 0, sizeof(wstats->qual));
 354                 /* If a spy address is defined, we report stats of the
 355                  * first spy address - Jean II */
 356                 if (SPY_NUMBER(priv)) {
 357                         wstats->qual.qual = priv->spy_data.spy_stat[0].qual;
 358                         wstats->qual.level = priv->spy_data.spy_stat[0].level;
 359                         wstats->qual.noise = priv->spy_data.spy_stat[0].noise;
 360                         wstats->qual.updated = priv->spy_data.spy_stat[0].updated;
 361                 }
 362         } else {
 363                 struct {
 364                         __le16 qual, signal, noise, unused;
 365                 } __attribute__ ((packed)) cq;
 366
 367                 err = HERMES_READ_RECORD(hw, USER_BAP,
 368                                          HERMES_RID_COMMSQUALITY, &cq);
 369
 370                 if (!err) {
 371                         wstats->qual.qual = (int)le16_to_cpu(cq.qual);
 372                         wstats->qual.level = (int)le16_to_cpu(cq.signal) - 0x95;
 373                         wstats->qual.noise = (int)le16_to_cpu(cq.noise) - 0x95;
 374                         wstats->qual.updated = 7;
 375                 }
 376         }
 377
 378         orinoco_unlock(priv, &flags);
 379         return wstats;
 380 }
 381
 382 static void orinoco_set_multicast_list(struct net_device *dev)
 383 {
 384         struct orinoco_private *priv = netdev_priv(dev);
 385         unsigned long flags;
 386
 387         if (orinoco_lock(priv, &flags) != 0) {
 388                 printk(KERN_DEBUG "%s: orinoco_set_multicast_list() "
 389                        "called when hw_unavailable\n", dev->name);
 390                 return;
 391         }
 392
 393         __orinoco_set_multicast_list(dev);
 394         orinoco_unlock(priv, &flags);
 395 }
 396
 397 static int orinoco_change_mtu(struct net_device *dev, int new_mtu)
 398 {
 399         struct orinoco_private *priv = netdev_priv(dev);
 400
 401         if ( (new_mtu < ORINOCO_MIN_MTU) || (new_mtu > ORINOCO_MAX_MTU) )
 402                 return -EINVAL;
 403
 404         if ( (new_mtu + ENCAPS_OVERHEAD + IEEE80211_HLEN) >
 405              (priv->nicbuf_size - ETH_HLEN) )
 406                 return -EINVAL;
 407
 408         dev->mtu = new_mtu;
 409
 410         return 0;
 411 }
 412
 413 /********************************************************************/
 414 /* Tx path                                                          */
 415 /********************************************************************/
 416
 417 static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev)
 418 {
 419         struct orinoco_private *priv = netdev_priv(dev);
 420         struct net_device_stats *stats = &priv->stats;
 421         hermes_t *hw = &priv->hw;
 422         int err = 0;
 423         u16 txfid = priv->txfid;
 424         struct ethhdr *eh;
 425         int data_off;
 426         struct hermes_tx_descriptor desc;
 427         unsigned long flags;
 428
 429         if (! netif_running(dev)) {
 430                 printk(KERN_ERR "%s: Tx on stopped device!\n",
 431                        dev->name);
 432                 return NETDEV_TX_BUSY;
 433         }
 434
 435         if (netif_queue_stopped(dev)) {
 436                 printk(KERN_DEBUG "%s: Tx while transmitter busy!\n",
 437                        dev->name);
 438                 return NETDEV_TX_BUSY;
 439         }
 440
 441         if (orinoco_lock(priv, &flags) != 0) {
 442                 printk(KERN_ERR "%s: orinoco_xmit() called while hw_unavailable\n",
 443                        dev->name);
 444                 return NETDEV_TX_BUSY;
 445         }
 446
 447         if (! netif_carrier_ok(dev) || (priv->iw_mode == IW_MODE_MONITOR)) {
 448                 /* Oops, the firmware hasn't established a connection,
 449                    silently drop the packet (this seems to be the
 450                    safest approach). */
 451                 goto drop;
 452         }
 453
 454         /* Check packet length */
 455         if (skb->len < ETH_HLEN)
 456                 goto drop;
 457
 458         eh = (struct ethhdr *)skb->data;
 459
 460         memset(&desc, 0, sizeof(desc));
 461         desc.tx_control = cpu_to_le16(HERMES_TXCTRL_TX_OK | HERMES_TXCTRL_TX_EX);
 462         err = hermes_bap_pwrite(hw, USER_BAP, &desc, sizeof(desc), txfid, 0);
 463         if (err) {
 464                 if (net_ratelimit())
 465                         printk(KERN_ERR "%s: Error %d writing Tx descriptor "
 466                                "to BAP\n", dev->name, err);
 467                 goto busy;
 468         }
 469
 470         /* Clear the 802.11 header and data length fields - some
 471          * firmwares (e.g. Lucent/Agere 8.xx) appear to get confused
 472          * if this isn't done. */
 473         hermes_clear_words(hw, HERMES_DATA0,
 474                            HERMES_802_3_OFFSET - HERMES_802_11_OFFSET);
 475
 476         /* Encapsulate Ethernet-II frames */
 477         if (ntohs(eh->h_proto) > ETH_DATA_LEN) { /* Ethernet-II frame */
 478                 struct header_struct {
 479                         struct ethhdr eth;      /* 802.3 header */
 480                         u8 encap[6];            /* 802.2 header */
 481                 } __attribute__ ((packed)) hdr;
 482
 483                 /* Strip destination and source from the data */
 484                 skb_pull(skb, 2 * ETH_ALEN);
 485                 data_off = HERMES_802_2_OFFSET + sizeof(encaps_hdr);
 486
 487                 /* And move them to a separate header */
 488                 memcpy(&hdr.eth, eh, 2 * ETH_ALEN);
 489                 hdr.eth.h_proto = htons(sizeof(encaps_hdr) + skb->len);
 490                 memcpy(hdr.encap, encaps_hdr, sizeof(encaps_hdr));
 491
 492                 err = hermes_bap_pwrite(hw, USER_BAP, &hdr, sizeof(hdr),
 493                                         txfid, HERMES_802_3_OFFSET);
 494                 if (err) {
 495                         if (net_ratelimit())
 496                                 printk(KERN_ERR "%s: Error %d writing packet "
 497                                        "header to BAP\n", dev->name, err);
 498                         goto busy;
 499                 }
 500         } else { /* IEEE 802.3 frame */
 501                 data_off = HERMES_802_3_OFFSET;
 502         }
 503
 504         err = hermes_bap_pwrite(hw, USER_BAP, skb->data, skb->len,
 505                                 txfid, data_off);
 506         if (err) {
 507                 printk(KERN_ERR "%s: Error %d writing packet to BAP\n",
 508                        dev->name, err);
 509                 goto busy;
 510         }
 511
 512         /* Finally, we actually initiate the send */
 513         netif_stop_queue(dev);
 514
 515         err = hermes_docmd_wait(hw, HERMES_CMD_TX | HERMES_CMD_RECL,
 516                                 txfid, NULL);
 517         if (err) {
 518                 netif_start_queue(dev);
 519                 if (net_ratelimit())
 520                         printk(KERN_ERR "%s: Error %d transmitting packet\n",
 521                                 dev->name, err);
 522                 goto busy;
 523         }
 524
 525         dev->trans_start = jiffies;
 526         stats->tx_bytes += data_off + skb->len;
 527         goto ok;
 528
 529  drop:
 530         stats->tx_errors++;
 531         stats->tx_dropped++;
 532
 533  ok:
 534         orinoco_unlock(priv, &flags);
 535         dev_kfree_skb(skb);
 536         return NETDEV_TX_OK;
 537
 538  busy:
 539         if (err == -EIO)
 540                 schedule_work(&priv->reset_work);
 541         orinoco_unlock(priv, &flags);
 542         return NETDEV_TX_BUSY;
 543 }
 544
 545 static void __orinoco_ev_alloc(struct net_device *dev, hermes_t *hw)
 546 {
 547         struct orinoco_private *priv = netdev_priv(dev);
 548         u16 fid = hermes_read_regn(hw, ALLOCFID);
 549
 550         if (fid != priv->txfid) {
 551                 if (fid != DUMMY_FID)
 552                         printk(KERN_WARNING "%s: Allocate event on unexpected fid (%04X)\n",
 553                                dev->name, fid);
 554                 return;
 555         }
 556
 557         hermes_write_regn(hw, ALLOCFID, DUMMY_FID);
 558 }
 559
 560 static void __orinoco_ev_tx(struct net_device *dev, hermes_t *hw)
 561 {
 562         struct orinoco_private *priv = netdev_priv(dev);
 563         struct net_device_stats *stats = &priv->stats;
 564
 565         stats->tx_packets++;
 566
 567         netif_wake_queue(dev);
 568
 569         hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
 570 }
 571
 572 static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw)
 573 {
 574         struct orinoco_private *priv = netdev_priv(dev);
 575         struct net_device_stats *stats = &priv->stats;
 576         u16 fid = hermes_read_regn(hw, TXCOMPLFID);
 577         u16 status;
 578         struct hermes_txexc_data hdr;
 579         int err = 0;
 580
 581         if (fid == DUMMY_FID)
 582                 return; /* Nothing's really happened */
 583
 584         /* Read part of the frame header - we need status and addr1 */
 585         err = hermes_bap_pread(hw, IRQ_BAP, &hdr,
 586                                sizeof(struct hermes_txexc_data),
 587                                fid, 0);
 588
 589         hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
 590         stats->tx_errors++;
 591
 592         if (err) {
 593                 printk(KERN_WARNING "%s: Unable to read descriptor on Tx error "
 594                        "(FID=%04X error %d)\n",
 595                        dev->name, fid, err);
 596                 return;
 597         }
 598
 599         DEBUG(1, "%s: Tx error, err %d (FID=%04X)\n", dev->name,
 600               err, fid);
 601
 602         /* We produce a TXDROP event only for retry or lifetime
 603          * exceeded, because that's the only status that really mean
 604          * that this particular node went away.
 605          * Other errors means that *we* screwed up. - Jean II */
 606         status = le16_to_cpu(hdr.desc.status);
 607         if (status & (HERMES_TXSTAT_RETRYERR | HERMES_TXSTAT_AGEDERR)) {
 608                 union iwreq_data        wrqu;
 609
 610                 /* Copy 802.11 dest address.
 611                  * We use the 802.11 header because the frame may
 612                  * not be 802.3 or may be mangled...
 613                  * In Ad-Hoc mode, it will be the node address.
 614                  * In managed mode, it will be most likely the AP addr
 615                  * User space will figure out how to convert it to
 616                  * whatever it needs (IP address or else).
 617                  * - Jean II */
 618                 memcpy(wrqu.addr.sa_data, hdr.addr1, ETH_ALEN);
 619                 wrqu.addr.sa_family = ARPHRD_ETHER;
 620
 621                 /* Send event to user space */
 622                 wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL);
 623         }
 624
 625         netif_wake_queue(dev);
 626 }
 627
 628 static void orinoco_tx_timeout(struct net_device *dev)
 629 {
 630         struct orinoco_private *priv = netdev_priv(dev);
 631         struct net_device_stats *stats = &priv->stats;
 632         struct hermes *hw = &priv->hw;
 633
 634         printk(KERN_WARNING "%s: Tx timeout! "
 635                "ALLOCFID=%04x, TXCOMPLFID=%04x, EVSTAT=%04x\n",
 636                dev->name, hermes_read_regn(hw, ALLOCFID),
 637                hermes_read_regn(hw, TXCOMPLFID), hermes_read_regn(hw, EVSTAT));
 638
 639         stats->tx_errors++;
 640
 641         schedule_work(&priv->reset_work);
 642 }
 643
 644 /********************************************************************/
 645 /* Rx path (data frames)                                            */
 646 /********************************************************************/
 647
 648 /* Does the frame have a SNAP header indicating it should be
 649  * de-encapsulated to Ethernet-II? */
 650 static inline int is_ethersnap(void *_hdr)
 651 {
 652         u8 *hdr = _hdr;
 653
 654         /* We de-encapsulate all packets which, a) have SNAP headers
 655          * (i.e. SSAP=DSAP=0xaa and CTRL=0x3 in the 802.2 LLC header
 656          * and where b) the OUI of the SNAP header is 00:00:00 or
 657          * 00:00:f8 - we need both because different APs appear to use
 658          * different OUIs for some reason */
 659         return (memcmp(hdr, &encaps_hdr, 5) == 0)
 660                 && ( (hdr[5] == 0x00) || (hdr[5] == 0xf8) );
 661 }
 662
 663 static inline void orinoco_spy_gather(struct net_device *dev, u_char *mac,
 664                                       int level, int noise)
 665 {
 666         struct iw_quality wstats;
 667         wstats.level = level - 0x95;
 668         wstats.noise = noise - 0x95;
 669         wstats.qual = (level > noise) ? (level - noise) : 0;
 670         wstats.updated = 7;
 671         /* Update spy records */
 672         wireless_spy_update(dev, mac, &wstats);
 673 }
 674
 675 static void orinoco_stat_gather(struct net_device *dev,
 676                                 struct sk_buff *skb,
 677                                 struct hermes_rx_descriptor *desc)
 678 {
 679         struct orinoco_private *priv = netdev_priv(dev);
 680
 681         /* Using spy support with lots of Rx packets, like in an
 682          * infrastructure (AP), will really slow down everything, because
 683          * the MAC address must be compared to each entry of the spy list.
 684          * If the user really asks for it (set some address in the
 685          * spy list), we do it, but he will pay the price.
 686          * Note that to get here, you need both WIRELESS_SPY
 687          * compiled in AND some addresses in the list !!!
 688          */
 689         /* Note : gcc will optimise the whole section away if
 690          * WIRELESS_SPY is not defined... - Jean II */
 691         if (SPY_NUMBER(priv)) {
 692                 orinoco_spy_gather(dev, skb->mac.raw + ETH_ALEN,
 693                                    desc->signal, desc->silence);
 694         }
 695 }
 696
 697 /*
 698  * orinoco_rx_monitor - handle received monitor frames.
 699  *
 700  * Arguments:
 701  *      dev             network device
 702  *      rxfid           received FID
 703  *      desc            rx descriptor of the frame
 704  *
 705  * Call context: interrupt
 706  */
 707 static void orinoco_rx_monitor(struct net_device *dev, u16 rxfid,
 708                                struct hermes_rx_descriptor *desc)
 709 {
 710         u32 hdrlen = 30;        /* return full header by default */
 711         u32 datalen = 0;
 712         u16 fc;
 713         int err;
 714         int len;
 715         struct sk_buff *skb;
 716         struct orinoco_private *priv = netdev_priv(dev);
 717         struct net_device_stats *stats = &priv->stats;
 718         hermes_t *hw = &priv->hw;
 719
 720         len = le16_to_cpu(desc->data_len);
 721
 722         /* Determine the size of the header and the data */
 723         fc = le16_to_cpu(desc->frame_ctl);
 724         switch (fc & IEEE80211_FCTL_FTYPE) {
 725         case IEEE80211_FTYPE_DATA:
 726                 if ((fc & IEEE80211_FCTL_TODS)
 727                     && (fc & IEEE80211_FCTL_FROMDS))
 728                         hdrlen = 30;
 729                 else
 730                         hdrlen = 24;
 731                 datalen = len;
 732                 break;
 733         case IEEE80211_FTYPE_MGMT:
 734                 hdrlen = 24;
 735                 datalen = len;
 736                 break;
 737         case IEEE80211_FTYPE_CTL:
 738                 switch (fc & IEEE80211_FCTL_STYPE) {
 739                 case IEEE80211_STYPE_PSPOLL:
 740                 case IEEE80211_STYPE_RTS:
 741                 case IEEE80211_STYPE_CFEND:
 742                 case IEEE80211_STYPE_CFENDACK:
 743                         hdrlen = 16;
 744                         break;
 745                 case IEEE80211_STYPE_CTS:
 746                 case IEEE80211_STYPE_ACK:
 747                         hdrlen = 10;
 748                         break;
 749                 }
 750                 break;
 751         default:
 752                 /* Unknown frame type */
 753                 break;
 754         }
 755
 756         /* sanity check the length */
 757         if (datalen > IEEE80211_DATA_LEN + 12) {
 758                 printk(KERN_DEBUG "%s: oversized monitor frame, "
 759                        "data length = %d\n", dev->name, datalen);
 760                 stats->rx_length_errors++;
 761                 goto update_stats;
 762         }
 763
 764         skb = dev_alloc_skb(hdrlen + datalen);
 765         if (!skb) {
 766                 printk(KERN_WARNING "%s: Cannot allocate skb for monitor frame\n",
 767                        dev->name);
 768                 goto update_stats;
 769         }
 770
 771         /* Copy the 802.11 header to the skb */
 772         memcpy(skb_put(skb, hdrlen), &(desc->frame_ctl), hdrlen);
 773         skb->mac.raw = skb->data;
 774
 775         /* If any, copy the data from the card to the skb */
 776         if (datalen > 0) {
 777                 err = hermes_bap_pread(hw, IRQ_BAP, skb_put(skb, datalen),
 778                                        ALIGN(datalen, 2), rxfid,
 779                                        HERMES_802_2_OFFSET);
 780                 if (err) {
 781                         printk(KERN_ERR "%s: error %d reading monitor frame\n",
 782                                dev->name, err);
 783                         goto drop;
 784                 }
 785         }
 786
 787         skb->dev = dev;
 788         skb->ip_summed = CHECKSUM_NONE;
 789         skb->pkt_type = PACKET_OTHERHOST;
 790         skb->protocol = __constant_htons(ETH_P_802_2);
 791
 792         dev->last_rx = jiffies;
 793         stats->rx_packets++;
 794         stats->rx_bytes += skb->len;
 795
 796         netif_rx(skb);
 797         return;
 798
 799  drop:
 800         dev_kfree_skb_irq(skb);
 801  update_stats:
 802         stats->rx_errors++;
 803         stats->rx_dropped++;
 804 }
 805
 806 static void __orinoco_ev_rx(struct net_device *dev, hermes_t *hw)
 807 {
 808         struct orinoco_private *priv = netdev_priv(dev);
 809         struct net_device_stats *stats = &priv->stats;
 810         struct iw_statistics *wstats = &priv->wstats;
 811         struct sk_buff *skb = NULL;
 812         u16 rxfid, status, fc;
 813         int length;
 814         struct hermes_rx_descriptor desc;
 815         struct ethhdr *hdr;
 816         int err;
 817
 818         rxfid = hermes_read_regn(hw, RXFID);
 819
 820         err = hermes_bap_pread(hw, IRQ_BAP, &desc, sizeof(desc),
 821                                rxfid, 0);
 822         if (err) {
 823                 printk(KERN_ERR "%s: error %d reading Rx descriptor. "
 824                        "Frame dropped.\n", dev->name, err);
 825                 goto update_stats;
 826         }
 827
 828         status = le16_to_cpu(desc.status);
 829
 830         if (status & HERMES_RXSTAT_BADCRC) {
 831                 DEBUG(1, "%s: Bad CRC on Rx. Frame dropped.\n",
 832                       dev->name);
 833                 stats->rx_crc_errors++;
 834                 goto update_stats;
 835         }
 836
 837         /* Handle frames in monitor mode */
 838         if (priv->iw_mode == IW_MODE_MONITOR) {
 839                 orinoco_rx_monitor(dev, rxfid, &desc);
 840                 return;
 841         }
 842
 843         if (status & HERMES_RXSTAT_UNDECRYPTABLE) {
 844                 DEBUG(1, "%s: Undecryptable frame on Rx. Frame dropped.\n",
 845                       dev->name);
 846                 wstats->discard.code++;
 847                 goto update_stats;
 848         }
 849
 850         length = le16_to_cpu(desc.data_len);
 851         fc = le16_to_cpu(desc.frame_ctl);
 852
 853         /* Sanity checks */
 854         if (length < 3) { /* No for even an 802.2 LLC header */
 855                 /* At least on Symbol firmware with PCF we get quite a
 856                    lot of these legitimately - Poll frames with no
 857                    data. */
 858                 return;
 859         }
 860         if (length > IEEE80211_DATA_LEN) {
 861                 printk(KERN_WARNING "%s: Oversized frame received (%d bytes)\n",
 862                        dev->name, length);
 863                 stats->rx_length_errors++;
 864                 goto update_stats;
 865         }
 866
 867         /* We need space for the packet data itself, plus an ethernet
 868            header, plus 2 bytes so we can align the IP header on a
 869            32bit boundary, plus 1 byte so we can read in odd length
 870            packets from the card, which has an IO granularity of 16
 871            bits */
 872         skb = dev_alloc_skb(length+ETH_HLEN+2+1);
 873         if (!skb) {
 874                 printk(KERN_WARNING "%s: Can't allocate skb for Rx\n",
 875                        dev->name);
 876                 goto update_stats;
 877         }
 878
 879         /* We'll prepend the header, so reserve space for it.  The worst
 880            case is no decapsulation, when 802.3 header is prepended and
 881            nothing is removed.  2 is for aligning the IP header.  */
 882         skb_reserve(skb, ETH_HLEN + 2);
 883
 884         err = hermes_bap_pread(hw, IRQ_BAP, skb_put(skb, length),
 885                                ALIGN(length, 2), rxfid,
 886                                HERMES_802_2_OFFSET);
 887         if (err) {
 888                 printk(KERN_ERR "%s: error %d reading frame. "
 889                        "Frame dropped.\n", dev->name, err);
 890                 goto drop;
 891         }
 892
 893         /* Handle decapsulation
 894          * In most cases, the firmware tell us about SNAP frames.
 895          * For some reason, the SNAP frames sent by LinkSys APs
 896          * are not properly recognised by most firmwares.
 897          * So, check ourselves */
 898         if (length >= ENCAPS_OVERHEAD &&
 899             (((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_1042) ||
 900              ((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_TUNNEL) ||
 901              is_ethersnap(skb->data))) {
 902                 /* These indicate a SNAP within 802.2 LLC within
 903                    802.11 frame which we'll need to de-encapsulate to
 904                    the original EthernetII frame. */
 905                 hdr = (struct ethhdr *)skb_push(skb, ETH_HLEN - ENCAPS_OVERHEAD);
 906         } else {
 907                 /* 802.3 frame - prepend 802.3 header as is */
 908                 hdr = (struct ethhdr *)skb_push(skb, ETH_HLEN);
 909                 hdr->h_proto = htons(length);
 910         }
 911         memcpy(hdr->h_dest, desc.addr1, ETH_ALEN);
 912         if (fc & IEEE80211_FCTL_FROMDS)
 913                 memcpy(hdr->h_source, desc.addr3, ETH_ALEN);
 914         else
 915                 memcpy(hdr->h_source, desc.addr2, ETH_ALEN);
 916
 917         dev->last_rx = jiffies;
 918         skb->dev = dev;
 919         skb->protocol = eth_type_trans(skb, dev);
 920         skb->ip_summed = CHECKSUM_NONE;
 921         if (fc & IEEE80211_FCTL_TODS)
 922                 skb->pkt_type = PACKET_OTHERHOST;
 923
 924         /* Process the wireless stats if needed */
 925         orinoco_stat_gather(dev, skb, &desc);
 926
 927         /* Pass the packet to the networking stack */
 928         netif_rx(skb);
 929         stats->rx_packets++;
 930         stats->rx_bytes += length;
 931
 932         return;
 933
 934  drop:
 935         dev_kfree_skb_irq(skb);
 936  update_stats:
 937         stats->rx_errors++;
 938         stats->rx_dropped++;
 939 }
 940
 941 /********************************************************************/
 942 /* Rx path (info frames)                                            */
 943 /********************************************************************/
 944
 945 static void print_linkstatus(struct net_device *dev, u16 status)
 946 {
 947         char * s;
 948
 949         if (suppress_linkstatus)
 950                 return;
 951
 952         switch (status) {
 953         case HERMES_LINKSTATUS_NOT_CONNECTED:
 954                 s = "Not Connected";
 955                 break;
 956         case HERMES_LINKSTATUS_CONNECTED:
 957                 s = "Connected";
 958                 break;
 959         case HERMES_LINKSTATUS_DISCONNECTED:
 960                 s = "Disconnected";
 961                 break;
 962         case HERMES_LINKSTATUS_AP_CHANGE:
 963                 s = "AP Changed";
 964                 break;
 965         case HERMES_LINKSTATUS_AP_OUT_OF_RANGE:
 966                 s = "AP Out of Range";
 967                 break;
 968         case HERMES_LINKSTATUS_AP_IN_RANGE:
 969                 s = "AP In Range";
 970                 break;
 971         case HERMES_LINKSTATUS_ASSOC_FAILED:
 972                 s = "Association Failed";
 973                 break;
 974         default:
 975                 s = "UNKNOWN";
 976         }
 977
 978         printk(KERN_INFO "%s: New link status: %s (%04x)\n",
 979                dev->name, s, status);
 980 }
 981
 982 /* Search scan results for requested BSSID, join it if found */
 983 static void orinoco_join_ap(struct net_device *dev)
 984 {
 985         struct orinoco_private *priv = netdev_priv(dev);
 986         struct hermes *hw = &priv->hw;
 987         int err;
 988         unsigned long flags;
 989         struct join_req {
 990                 u8 bssid[ETH_ALEN];
 991                 __le16 channel;
 992         } __attribute__ ((packed)) req;
 993         const int atom_len = offsetof(struct prism2_scan_apinfo, atim);
 994         struct prism2_scan_apinfo *atom = NULL;
 995         int offset = 4;
 996         int found = 0;
 997         u8 *buf;
 998         u16 len;
 999
1000         /* Allocate buffer for scan results */
1001         buf = kmalloc(MAX_SCAN_LEN, GFP_KERNEL);
1002         if (! buf)
1003                 return;
1004
1005         if (orinoco_lock(priv, &flags) != 0)
1006                 goto fail_lock;
1007
1008         /* Sanity checks in case user changed something in the meantime */
1009         if (! priv->bssid_fixed)
1010                 goto out;
1011
1012         if (strlen(priv->desired_essid) == 0)
1013                 goto out;
1014
1015         /* Read scan results from the firmware */
1016         err = hermes_read_ltv(hw, USER_BAP,
1017                               HERMES_RID_SCANRESULTSTABLE,
1018                               MAX_SCAN_LEN, &len, buf);
1019         if (err) {
1020                 printk(KERN_ERR "%s: Cannot read scan results\n",
1021                        dev->name);
1022                 goto out;
1023         }
1024
1025         len = HERMES_RECLEN_TO_BYTES(len);
1026
1027         /* Go through the scan results looking for the channel of the AP
1028          * we were requested to join */
1029         for (; offset + atom_len <= len; offset += atom_len) {
1030                 atom = (struct prism2_scan_apinfo *) (buf + offset);
1031                 if (memcmp(&atom->bssid, priv->desired_bssid, ETH_ALEN) == 0) {
1032                         found = 1;
1033                         break;
1034                 }
1035         }
1036
1037         if (! found) {
1038                 DEBUG(1, "%s: Requested AP not found in scan results\n",
1039                       dev->name);
1040                 goto out;
1041         }
1042
1043         memcpy(req.bssid, priv->desired_bssid, ETH_ALEN);
1044         req.channel = atom->channel;    /* both are little-endian */
1045         err = HERMES_WRITE_RECORD(hw, USER_BAP, HERMES_RID_CNFJOINREQUEST,
1046                                   &req);
1047         if (err)
1048                 printk(KERN_ERR "%s: Error issuing join request\n", dev->name);
1049
1050  out:
1051         orinoco_unlock(priv, &flags);
1052
1053  fail_lock:
1054         kfree(buf);
1055 }
1056
1057 /* Send new BSSID to userspace */
1058 static void orinoco_send_wevents(struct net_device *dev)
1059 {
1060         struct orinoco_private *priv = netdev_priv(dev);
1061         struct hermes *hw = &priv->hw;
1062         union iwreq_data wrqu;
1063         int err;
1064         unsigned long flags;
1065
1066         if (orinoco_lock(priv, &flags) != 0)
1067                 return;
1068
1069         err = hermes_read_ltv(hw, IRQ_BAP, HERMES_RID_CURRENTBSSID,
1070                               ETH_ALEN, NULL, wrqu.ap_addr.sa_data);
1071         if (err != 0)
1072                 goto out;
1073
1074         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1075
1076         /* Send event to user space */
1077         wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
1078
1079  out:
1080         orinoco_unlock(priv, &flags);
1081 }
1082
1083 static void __orinoco_ev_info(struct net_device *dev, hermes_t *hw)
1084 {
1085         struct orinoco_private *priv = netdev_priv(dev);
1086         u16 infofid;
1087         struct {
1088                 __le16 len;
1089                 __le16 type;
1090         } __attribute__ ((packed)) info;
1091         int len, type;
1092         int err;
1093
1094         /* This is an answer to an INQUIRE command that we did earlier,
1095          * or an information "event" generated by the card
1096          * The controller return to us a pseudo frame containing
1097          * the information in question - Jean II */
1098         infofid = hermes_read_regn(hw, INFOFID);
1099
1100         /* Read the info frame header - don't try too hard */
1101         err = hermes_bap_pread(hw, IRQ_BAP, &info, sizeof(info),
1102                                infofid, 0);
1103         if (err) {
1104                 printk(KERN_ERR "%s: error %d reading info frame. "
1105                        "Frame dropped.\n", dev->name, err);
1106                 return;
1107         }
1108
1109         len = HERMES_RECLEN_TO_BYTES(le16_to_cpu(info.len));
1110         type = le16_to_cpu(info.type);
1111
1112         switch (type) {
1113         case HERMES_INQ_TALLIES: {
1114                 struct hermes_tallies_frame tallies;
1115                 struct iw_statistics *wstats = &priv->wstats;
1116
1117                 if (len > sizeof(tallies)) {
1118                         printk(KERN_WARNING "%s: Tallies frame too long (%d bytes)\n",
1119                                dev->name, len);
1120                         len = sizeof(tallies);
1121                 }
1122
1123                 err = hermes_bap_pread(hw, IRQ_BAP, &tallies, len,
1124                                        infofid, sizeof(info));
1125                 if (err)
1126                         break;
1127
1128                 /* Increment our various counters */
1129                 /* wstats->discard.nwid - no wrong BSSID stuff */
1130                 wstats->discard.code +=
1131                         le16_to_cpu(tallies.RxWEPUndecryptable);
1132                 if (len == sizeof(tallies))
1133                         wstats->discard.code +=
1134                                 le16_to_cpu(tallies.RxDiscards_WEPICVError) +
1135                                 le16_to_cpu(tallies.RxDiscards_WEPExcluded);
1136                 wstats->discard.misc +=
1137                         le16_to_cpu(tallies.TxDiscardsWrongSA);
1138                 wstats->discard.fragment +=
1139                         le16_to_cpu(tallies.RxMsgInBadMsgFragments);
1140                 wstats->discard.retries +=
1141                         le16_to_cpu(tallies.TxRetryLimitExceeded);
1142                 /* wstats->miss.beacon - no match */
1143         }
1144         break;
1145         case HERMES_INQ_LINKSTATUS: {
1146                 struct hermes_linkstatus linkstatus;
1147                 u16 newstatus;
1148                 int connected;
1149
1150                 if (priv->iw_mode == IW_MODE_MONITOR)
1151                         break;
1152
1153                 if (len != sizeof(linkstatus)) {
1154                         printk(KERN_WARNING "%s: Unexpected size for linkstatus frame (%d bytes)\n",
1155                                dev->name, len);
1156                         break;
1157                 }
1158
1159                 err = hermes_bap_pread(hw, IRQ_BAP, &linkstatus, len,
1160                                        infofid, sizeof(info));
1161                 if (err)
1162                         break;
1163                 newstatus = le16_to_cpu(linkstatus.linkstatus);
1164
1165                 /* Symbol firmware uses "out of range" to signal that
1166                  * the hostscan frame can be requested.  */
1167                 if (newstatus == HERMES_LINKSTATUS_AP_OUT_OF_RANGE &&
1168                     priv->firmware_type == FIRMWARE_TYPE_SYMBOL &&
1169                     priv->has_hostscan && priv->scan_inprogress) {
1170                         hermes_inquire(hw, HERMES_INQ_HOSTSCAN_SYMBOL);
1171                         break;
1172                 }
1173
1174                 connected = (newstatus == HERMES_LINKSTATUS_CONNECTED)
1175                         || (newstatus == HERMES_LINKSTATUS_AP_CHANGE)
1176                         || (newstatus == HERMES_LINKSTATUS_AP_IN_RANGE);
1177
1178                 if (connected)
1179                         netif_carrier_on(dev);
1180                 else if (!ignore_disconnect)
1181                         netif_carrier_off(dev);
1182
1183                 if (newstatus != priv->last_linkstatus) {
1184                         priv->last_linkstatus = newstatus;
1185                         print_linkstatus(dev, newstatus);
1186                         /* The info frame contains only one word which is the
1187                          * status (see hermes.h). The status is pretty boring
1188                          * in itself, that's why we export the new BSSID...
1189                          * Jean II */
1190                         schedule_work(&priv->wevent_work);
1191                 }
1192         }
1193         break;
1194         case HERMES_INQ_SCAN:
1195                 if (!priv->scan_inprogress && priv->bssid_fixed &&
1196                     priv->firmware_type == FIRMWARE_TYPE_INTERSIL) {
1197                         schedule_work(&priv->join_work);
1198                         break;
1199                 }
1200                 /* fall through */
1201         case HERMES_INQ_HOSTSCAN:
1202         case HERMES_INQ_HOSTSCAN_SYMBOL: {
1203                 /* Result of a scanning. Contains information about
1204                  * cells in the vicinity - Jean II */
1205                 union iwreq_data        wrqu;
1206                 unsigned char *buf;
1207
1208                 /* Sanity check */
1209                 if (len > 4096) {
1210                         printk(KERN_WARNING "%s: Scan results too large (%d bytes)\n",
1211                                dev->name, len);
1212                         break;
1213                 }
1214
1215                 /* We are a strict producer. If the previous scan results
1216                  * have not been consumed, we just have to drop this
1217                  * frame. We can't remove the previous results ourselves,
1218                  * that would be *very* racy... Jean II */
1219                 if (priv->scan_result != NULL) {
1220                         printk(KERN_WARNING "%s: Previous scan results not consumed, dropping info frame.\n", dev->name);
1221                         break;
1222                 }
1223
1224                 /* Allocate buffer for results */
1225                 buf = kmalloc(len, GFP_ATOMIC);
1226                 if (buf == NULL)
1227                         /* No memory, so can't printk()... */
1228                         break;
1229
1230                 /* Read scan data */
1231                 err = hermes_bap_pread(hw, IRQ_BAP, (void *) buf, len,
1232                                        infofid, sizeof(info));
1233                 if (err) {
1234                         kfree(buf);
1235                         break;
1236                 }
1237
1238 #ifdef ORINOCO_DEBUG
1239                 {
1240                         int     i;
1241                         printk(KERN_DEBUG "Scan result [%02X", buf[0]);
1242                         for(i = 1; i < (len * 2); i++)
1243                                 printk(":%02X", buf[i]);
1244                         printk("]\n");
1245                 }
1246 #endif  /* ORINOCO_DEBUG */
1247
1248                 /* Allow the clients to access the results */
1249                 priv->scan_len = len;
1250                 priv->scan_result = buf;
1251
1252                 /* Send an empty event to user space.
1253                  * We don't send the received data on the event because
1254                  * it would require us to do complex transcoding, and
1255                  * we want to minimise the work done in the irq handler
1256                  * Use a request to extract the data - Jean II */
1257                 wrqu.data.length = 0;
1258                 wrqu.data.flags = 0;
1259                 wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
1260         }
1261         break;
1262         case HERMES_INQ_SEC_STAT_AGERE:
1263                 /* Security status (Agere specific) */
1264                 /* Ignore this frame for now */
1265                 if (priv->firmware_type == FIRMWARE_TYPE_AGERE)
1266                         break;
1267                 /* fall through */
1268         default:
1269                 printk(KERN_DEBUG "%s: Unknown information frame received: "
1270                        "type 0x%04x, length %d\n", dev->name, type, len);
1271                 /* We don't actually do anything about it */
1272                 break;
1273         }
1274 }
1275
1276 static void __orinoco_ev_infdrop(struct net_device *dev, hermes_t *hw)
1277 {
1278         if (net_ratelimit())
1279                 printk(KERN_DEBUG "%s: Information frame lost.\n", dev->name);
1280 }
1281
1282 /********************************************************************/
1283 /* Internal hardware control routines                               */
1284 /********************************************************************/
1285
1286 int __orinoco_up(struct net_device *dev)
1287 {
1288         struct orinoco_private *priv = netdev_priv(dev);
1289         struct hermes *hw = &priv->hw;
1290         int err;
1291
1292         netif_carrier_off(dev); /* just to make sure */
1293
1294         err = __orinoco_program_rids(dev);
1295         if (err) {
1296                 printk(KERN_ERR "%s: Error %d configuring card\n",
1297                        dev->name, err);
1298                 return err;
1299         }
1300
1301         /* Fire things up again */
1302         hermes_set_irqmask(hw, ORINOCO_INTEN);
1303         err = hermes_enable_port(hw, 0);
1304         if (err) {
1305                 printk(KERN_ERR "%s: Error %d enabling MAC port\n",
1306                        dev->name, err);
1307                 return err;
1308         }
1309
1310         netif_start_queue(dev);
1311
1312         return 0;
1313 }
1314
1315 int __orinoco_down(struct net_device *dev)
1316 {
1317         struct orinoco_private *priv = netdev_priv(dev);
1318         struct hermes *hw = &priv->hw;
1319         int err;
1320
1321         netif_stop_queue(dev);
1322
1323         if (! priv->hw_unavailable) {
1324                 if (! priv->broken_disableport) {
1325                         err = hermes_disable_port(hw, 0);
1326                         if (err) {
1327                                 /* Some firmwares (e.g. Intersil 1.3.x) seem
1328                                  * to have problems disabling the port, oh
1329                                  * well, too bad. */
1330                                 printk(KERN_WARNING "%s: Error %d disabling MAC port\n",
1331                                        dev->name, err);
1332                                 priv->broken_disableport = 1;
1333                         }
1334                 }
1335                 hermes_set_irqmask(hw, 0);
1336                 hermes_write_regn(hw, EVACK, 0xffff);
1337         }
1338
1339         /* firmware will have to reassociate */
1340         netif_carrier_off(dev);
1341         priv->last_linkstatus = 0xffff;
1342
1343         return 0;
1344 }
1345
1346 static int orinoco_allocate_fid(struct net_device *dev)
1347 {
1348         struct orinoco_private *priv = netdev_priv(dev);
1349         struct hermes *hw = &priv->hw;
1350         int err;
1351
1352         err = hermes_allocate(hw, priv->nicbuf_size, &priv->txfid);
1353         if (err == -EIO && priv->nicbuf_size > TX_NICBUF_SIZE_BUG) {
1354                 /* Try workaround for old Symbol firmware bug */
1355                 printk(KERN_WARNING "%s: firmware ALLOC bug detected "
1356                        "(old Symbol firmware?). Trying to work around... ",
1357                        dev->name);
1358
1359                 priv->nicbuf_size = TX_NICBUF_SIZE_BUG;
1360                 err = hermes_allocate(hw, priv->nicbuf_size, &priv->txfid);
1361                 if (err)
1362                         printk("failed!\n");
1363                 else
1364                         printk("ok.\n");
1365         }
1366
1367         return err;
1368 }
1369
1370 int orinoco_reinit_firmware(struct net_device *dev)
1371 {
1372         struct orinoco_private *priv = netdev_priv(dev);
1373         struct hermes *hw = &priv->hw;
1374         int err;
1375
1376         err = hermes_init(hw);
1377         if (!err)
1378                 err = orinoco_allocate_fid(dev);
1379
1380         return err;
1381 }
1382
1383 static int __orinoco_hw_set_bitrate(struct orinoco_private *priv)
1384 {
1385         hermes_t *hw = &priv->hw;
1386         int err = 0;
1387
1388         if (priv->bitratemode >= BITRATE_TABLE_SIZE) {
1389                 printk(KERN_ERR "%s: BUG: Invalid bitrate mode %d\n",
1390                        priv->ndev->name, priv->bitratemode);
1391                 return -EINVAL;
1392         }
1393
1394         switch (priv->firmware_type) {
1395         case FIRMWARE_TYPE_AGERE:
1396                 err = hermes_write_wordrec(hw, USER_BAP,
1397                                            HERMES_RID_CNFTXRATECONTROL,
1398                                            bitrate_table[priv->bitratemode].agere_txratectrl);
1399                 break;
1400         case FIRMWARE_TYPE_INTERSIL:
1401         case FIRMWARE_TYPE_SYMBOL:
1402                 err = hermes_write_wordrec(hw, USER_BAP,
1403                                            HERMES_RID_CNFTXRATECONTROL,
1404                                            bitrate_table[priv->bitratemode].intersil_txratectrl);
1405                 break;
1406         default:
1407                 BUG();
1408         }
1409
1410         return err;
1411 }
1412
1413 /* Set fixed AP address */
1414 static int __orinoco_hw_set_wap(struct orinoco_private *priv)
1415 {
1416         int roaming_flag;
1417         int err = 0;
1418         hermes_t *hw = &priv->hw;
1419
1420         switch (priv->firmware_type) {
1421         case FIRMWARE_TYPE_AGERE:
1422                 /* not supported */
1423                 break;
1424         case FIRMWARE_TYPE_INTERSIL:
1425                 if (priv->bssid_fixed)
1426                         roaming_flag = 2;
1427                 else
1428                         roaming_flag = 1;
1429
1430                 err = hermes_write_wordrec(hw, USER_BAP,
1431                                            HERMES_RID_CNFROAMINGMODE,
1432                                            roaming_flag);
1433                 break;
1434         case FIRMWARE_TYPE_SYMBOL:
1435                 err = HERMES_WRITE_RECORD(hw, USER_BAP,
1436                                           HERMES_RID_CNFMANDATORYBSSID_SYMBOL,
1437                                           &priv->desired_bssid);
1438                 break;
1439         }
1440         return err;
1441 }
1442
1443 /* Change the WEP keys and/or the current keys.  Can be called
1444  * either from __orinoco_hw_setup_wep() or directly from
1445  * orinoco_ioctl_setiwencode().  In the later case the association
1446  * with the AP is not broken (if the firmware can handle it),
1447  * which is needed for 802.1x implementations. */
1448 static int __orinoco_hw_setup_wepkeys(struct orinoco_private *priv)
1449 {
1450         hermes_t *hw = &priv->hw;
1451         int err = 0;
1452
1453         switch (priv->firmware_type) {
1454         case FIRMWARE_TYPE_AGERE:
1455                 err = HERMES_WRITE_RECORD(hw, USER_BAP,
1456                                           HERMES_RID_CNFWEPKEYS_AGERE,
1457                                           &priv->keys);
1458                 if (err)
1459                         return err;
1460                 err = hermes_write_wordrec(hw, USER_BAP,
1461                                            HERMES_RID_CNFTXKEY_AGERE,
1462                                            priv->tx_key);
1463                 if (err)
1464                         return err;
1465                 break;
1466         case FIRMWARE_TYPE_INTERSIL:
1467         case FIRMWARE_TYPE_SYMBOL:
1468                 {
1469                         int keylen;
1470                         int i;
1471
1472                         /* Force uniform key length to work around firmware bugs */
1473                         keylen = le16_to_cpu(priv->keys[priv->tx_key].len);
1474
1475                         if (keylen > LARGE_KEY_SIZE) {
1476                                 printk(KERN_ERR "%s: BUG: Key %d has oversize length %d.\n",
1477                                        priv->ndev->name, priv->tx_key, keylen);
1478                                 return -E2BIG;
1479                         }
1480
1481                         /* Write all 4 keys */
1482                         for(i = 0; i < ORINOCO_MAX_KEYS; i++) {
1483                                 err = hermes_write_ltv(hw, USER_BAP,
1484                                                        HERMES_RID_CNFDEFAULTKEY0 + i,
1485                                                        HERMES_BYTES_TO_RECLEN(keylen),
1486                                                        priv->keys[i].data);
1487                                 if (err)
1488                                         return err;
1489                         }
1490
1491                         /* Write the index of the key used in transmission */
1492                         err = hermes_write_wordrec(hw, USER_BAP,
1493                                                    HERMES_RID_CNFWEPDEFAULTKEYID,
1494                                                    priv->tx_key);
1495                         if (err)
1496                                 return err;
1497                 }
1498                 break;
1499         }
1500
1501         return 0;
1502 }
1503
1504 static int __orinoco_hw_setup_wep(struct orinoco_private *priv)
1505 {
1506         hermes_t *hw = &priv->hw;
1507         int err = 0;
1508         int master_wep_flag;
1509         int auth_flag;
1510
1511         if (priv->wep_on)
1512                 __orinoco_hw_setup_wepkeys(priv);
1513
1514         if (priv->wep_restrict)
1515                 auth_flag = HERMES_AUTH_SHARED_KEY;
1516         else
1517                 auth_flag = HERMES_AUTH_OPEN;
1518
1519         switch (priv->firmware_type) {
1520         case FIRMWARE_TYPE_AGERE: /* Agere style WEP */
1521                 if (priv->wep_on) {
1522                         /* Enable the shared-key authentication. */
1523                         err = hermes_write_wordrec(hw, USER_BAP,
1524                                                    HERMES_RID_CNFAUTHENTICATION_AGERE,
1525                                                    auth_flag);
1526                 }
1527                 err = hermes_write_wordrec(hw, USER_BAP,
1528                                            HERMES_RID_CNFWEPENABLED_AGERE,
1529                                            priv->wep_on);
1530                 if (err)
1531                         return err;
1532                 break;
1533
1534         case FIRMWARE_TYPE_INTERSIL: /* Intersil style WEP */
1535         case FIRMWARE_TYPE_SYMBOL: /* Symbol style WEP */
1536                 if (priv->wep_on) {
1537                         if (priv->wep_restrict ||
1538                             (priv->firmware_type == FIRMWARE_TYPE_SYMBOL))
1539                                 master_wep_flag = HERMES_WEP_PRIVACY_INVOKED |
1540                                                   HERMES_WEP_EXCL_UNENCRYPTED;
1541                         else
1542                                 master_wep_flag = HERMES_WEP_PRIVACY_INVOKED;
1543
1544                         err = hermes_write_wordrec(hw, USER_BAP,
1545                                                    HERMES_RID_CNFAUTHENTICATION,
1546                                                    auth_flag);
1547                         if (err)
1548                                 return err;
1549                 } else
1550                         master_wep_flag = 0;
1551
1552                 if (priv->iw_mode == IW_MODE_MONITOR)
1553                         master_wep_flag |= HERMES_WEP_HOST_DECRYPT;
1554
1555                 /* Master WEP setting : on/off */
1556                 err = hermes_write_wordrec(hw, USER_BAP,
1557                                            HERMES_RID_CNFWEPFLAGS_INTERSIL,
1558                                            master_wep_flag);
1559                 if (err)
1560                         return err;
1561
1562                 break;
1563         }
1564
1565         return 0;
1566 }
1567
1568 static int __orinoco_program_rids(struct net_device *dev)
1569 {
1570         struct orinoco_private *priv = netdev_priv(dev);
1571         hermes_t *hw = &priv->hw;
1572         int err;
1573         struct hermes_idstring idbuf;
1574
1575         /* Set the MAC address */
1576         err = hermes_write_ltv(hw, USER_BAP, HERMES_RID_CNFOWNMACADDR,
1577                                HERMES_BYTES_TO_RECLEN(ETH_ALEN), dev->dev_addr);
1578         if (err) {
1579                 printk(KERN_ERR "%s: Error %d setting MAC address\n",
1580                        dev->name, err);
1581                 return err;
1582         }
1583
1584         /* Set up the link mode */
1585         err = hermes_write_wordrec(hw, USER_BAP, HERMES_RID_CNFPORTTYPE,
1586                                    priv->port_type);
1587         if (err) {
1588                 printk(KERN_ERR "%s: Error %d setting port type\n",
1589                        dev->name, err);
1590                 return err;
1591         }
1592         /* Set the channel/frequency */
1593         if (priv->channel != 0 && priv->iw_mode != IW_MODE_INFRA) {
1594                 err = hermes_write_wordrec(hw, USER_BAP,
1595                                            HERMES_RID_CNFOWNCHANNEL,
1596                                            priv->channel);
1597                 if (err) {
1598                         printk(KERN_ERR "%s: Error %d setting channel %d\n",
1599                                dev->name, err, priv->channel);
1600                         return err;
1601                 }
1602         }
1603
1604         if (priv->has_ibss) {
1605                 u16 createibss;
1606
1607                 if ((strlen(priv->desired_essid) == 0) && (priv->createibss)) {
1608                         printk(KERN_WARNING "%s: This firmware requires an "
1609                                "ESSID in IBSS-Ad-Hoc mode.\n", dev->name);
1610                         /* With wvlan_cs, in this case, we would crash.
1611                          * hopefully, this driver will behave better...
1612                          * Jean II */
1613                         createibss = 0;
1614                 } else {
1615                         createibss = priv->createibss;
1616                 }
1617
1618                 err = hermes_write_wordrec(hw, USER_BAP,
1619                                            HERMES_RID_CNFCREATEIBSS,
1620                                            createibss);
1621                 if (err) {
1622                         printk(KERN_ERR "%s: Error %d setting CREATEIBSS\n",
1623                                dev->name, err);
1624                         return err;
1625                 }
1626         }
1627
1628         /* Set the desired BSSID */
1629         err = __orinoco_hw_set_wap(priv);
1630         if (err) {
1631                 printk(KERN_ERR "%s: Error %d setting AP address\n",
1632                        dev->name, err);
1633                 return err;
1634         }
1635         /* Set the desired ESSID */
1636         idbuf.len = cpu_to_le16(strlen(priv->desired_essid));
1637         memcpy(&idbuf.val, priv->desired_essid, sizeof(idbuf.val));
1638         /* WinXP wants partner to configure OWNSSID even in IBSS mode. (jimc) */
1639         err = hermes_write_ltv(hw, USER_BAP, HERMES_RID_CNFOWNSSID,
1640                                HERMES_BYTES_TO_RECLEN(strlen(priv->desired_essid)+2),
1641                                &idbuf);
1642         if (err) {
1643                 printk(KERN_ERR "%s: Error %d setting OWNSSID\n",
1644                        dev->name, err);
1645                 return err;
1646         }
1647         err = hermes_write_ltv(hw, USER_BAP, HERMES_RID_CNFDESIREDSSID,
1648                                HERMES_BYTES_TO_RECLEN(strlen(priv->desired_essid)+2),
1649                                &idbuf);
1650         if (err) {
1651                 printk(KERN_ERR "%s: Error %d setting DESIREDSSID\n",
1652                        dev->name, err);
1653                 return err;
1654         }
1655
1656         /* Set the station name */
1657         idbuf.len = cpu_to_le16(strlen(priv->nick));
1658         memcpy(&idbuf.val, priv->nick, sizeof(idbuf.val));
1659         err = hermes_write_ltv(hw, USER_BAP, HERMES_RID_CNFOWNNAME,
1660                                HERMES_BYTES_TO_RECLEN(strlen(priv->nick)+2),
1661                                &idbuf);
1662         if (err) {
1663                 printk(KERN_ERR "%s: Error %d setting nickname\n",
1664                        dev->name, err);
1665                 return err;
1666         }
1667
1668         /* Set AP density */
1669         if (priv->has_sensitivity) {
1670                 err = hermes_write_wordrec(hw, USER_BAP,
1671                                            HERMES_RID_CNFSYSTEMSCALE,
1672                                            priv->ap_density);
1673                 if (err) {
1674                         printk(KERN_WARNING "%s: Error %d setting SYSTEMSCALE.  "
1675                                "Disabling sensitivity control\n",
1676                                dev->name, err);
1677
1678                         priv->has_sensitivity = 0;
1679                 }
1680         }
1681
1682         /* Set RTS threshold */
1683         err = hermes_write_wordrec(hw, USER_BAP, HERMES_RID_CNFRTSTHRESHOLD,
1684                                    priv->rts_thresh);
1685         if (err) {
1686                 printk(KERN_ERR "%s: Error %d setting RTS threshold\n",
1687                        dev->name, err);
1688                 return err;
1689         }
1690
1691         /* Set fragmentation threshold or MWO robustness */
1692         if (priv->has_mwo)
1693                 err = hermes_write_wordrec(hw, USER_BAP,
1694                                            HERMES_RID_CNFMWOROBUST_AGERE,
1695                                            priv->mwo_robust);
1696         else
1697                 err = hermes_write_wordrec(hw, USER_BAP,
1698                                            HERMES_RID_CNFFRAGMENTATIONTHRESHOLD,
1699                                            priv->frag_thresh);
1700         if (err) {
1701                 printk(KERN_ERR "%s: Error %d setting fragmentation\n",
1702                        dev->name, err);
1703                 return err;
1704         }
1705
1706         /* Set bitrate */
1707         err = __orinoco_hw_set_bitrate(priv);
1708         if (err) {
1709                 printk(KERN_ERR "%s: Error %d setting bitrate\n",
1710                        dev->name, err);
1711                 return err;
1712         }
1713
1714         /* Set power management */
1715         if (priv->has_pm) {
1716                 err = hermes_write_wordrec(hw, USER_BAP,
1717                                            HERMES_RID_CNFPMENABLED,
1718                                            priv->pm_on);
1719                 if (err) {
1720                         printk(KERN_ERR "%s: Error %d setting up PM\n",
1721                                dev->name, err);
1722                         return err;
1723                 }
1724
1725                 err = hermes_write_wordrec(hw, USER_BAP,
1726                                            HERMES_RID_CNFMULTICASTRECEIVE,
1727                                            priv->pm_mcast);
1728                 if (err) {
1729                         printk(KERN_ERR "%s: Error %d setting up PM\n",
1730                                dev->name, err);
1731                         return err;
1732                 }
1733                 err = hermes_write_wordrec(hw, USER_BAP,
1734                                            HERMES_RID_CNFMAXSLEEPDURATION,
1735                                            priv->pm_period);
1736                 if (err) {
1737                         printk(KERN_ERR "%s: Error %d setting up PM\n",
1738                                dev->name, err);
1739                         return err;
1740                 }
1741                 err = hermes_write_wordrec(hw, USER_BAP,
1742                                            HERMES_RID_CNFPMHOLDOVERDURATION,
1743                                            priv->pm_timeout);
1744                 if (err) {
1745                         printk(KERN_ERR "%s: Error %d setting up PM\n",
1746                                dev->name, err);
1747                         return err;
1748                 }
1749         }
1750
1751         /* Set preamble - only for Symbol so far... */
1752         if (priv->has_preamble) {
1753                 err = hermes_write_wordrec(hw, USER_BAP,
1754                                            HERMES_RID_CNFPREAMBLE_SYMBOL,
1755                                            priv->preamble);
1756                 if (err) {
1757                         printk(KERN_ERR "%s: Error %d setting preamble\n",
1758                                dev->name, err);
1759                         return err;
1760                 }
1761         }
1762
1763         /* Set up encryption */
1764         if (priv->has_wep) {
1765                 err = __orinoco_hw_setup_wep(priv);
1766                 if (err) {
1767                         printk(KERN_ERR "%s: Error %d activating WEP\n",
1768                                dev->name, err);
1769                         return err;
1770                 }
1771         }
1772
1773         if (priv->iw_mode == IW_MODE_MONITOR) {
1774                 /* Enable monitor mode */
1775                 dev->type = ARPHRD_IEEE80211;
1776                 err = hermes_docmd_wait(hw, HERMES_CMD_TEST |
1777                                             HERMES_TEST_MONITOR, 0, NULL);
1778         } else {
1779                 /* Disable monitor mode */
1780                 dev->type = ARPHRD_ETHER;
1781                 err = hermes_docmd_wait(hw, HERMES_CMD_TEST |
1782                                             HERMES_TEST_STOP, 0, NULL);
1783         }
1784         if (err)
1785                 return err;
1786
1787         /* Set promiscuity / multicast*/
1788         priv->promiscuous = 0;
1789         priv->mc_count = 0;
1790
1791         /* FIXME: what about netif_tx_lock */
1792         __orinoco_set_multicast_list(dev);
1793
1794         return 0;
1795 }
1796
1797 /* FIXME: return int? */
1798 static void
1799 __orinoco_set_multicast_list(struct net_device *dev)
1800 {
1801         struct orinoco_private *priv = netdev_priv(dev);
1802         hermes_t *hw = &priv->hw;
1803         int err = 0;
1804         int promisc, mc_count;
1805
1806         /* The Hermes doesn't seem to have an allmulti mode, so we go
1807          * into promiscuous mode and let the upper levels deal. */
1808         if ( (dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI) ||
1809              (dev->mc_count > MAX_MULTICAST(priv)) ) {
1810                 promisc = 1;
1811                 mc_count = 0;
1812         } else {
1813                 promisc = 0;
1814                 mc_count = dev->mc_count;
1815         }
1816
1817         if (promisc != priv->promiscuous) {
1818                 err = hermes_write_wordrec(hw, USER_BAP,
1819                                            HERMES_RID_CNFPROMISCUOUSMODE,
1820                                            promisc);
1821                 if (err) {
1822                         printk(KERN_ERR "%s: Error %d setting PROMISCUOUSMODE to 1.\n",
1823                                dev->name, err);
1824                 } else
1825                         priv->promiscuous = promisc;
1826         }
1827
1828         if (! promisc && (mc_count || priv->mc_count) ) {
1829                 struct dev_mc_list *p = dev->mc_list;
1830                 struct hermes_multicast mclist;
1831                 int i;
1832
1833                 for (i = 0; i < mc_count; i++) {
1834                         /* paranoia: is list shorter than mc_count? */
1835                         BUG_ON(! p);
1836                         /* paranoia: bad address size in list? */
1837                         BUG_ON(p->dmi_addrlen != ETH_ALEN);
1838
1839                         memcpy(mclist.addr[i], p->dmi_addr, ETH_ALEN);
1840                         p = p->next;
1841                 }
1842
1843                 if (p)
1844                         printk(KERN_WARNING "%s: Multicast list is "
1845                                "longer than mc_count\n", dev->name);
1846
1847                 err = hermes_write_ltv(hw, USER_BAP, HERMES_RID_CNFGROUPADDRESSES,
1848                                        HERMES_BYTES_TO_RECLEN(priv->mc_count * ETH_ALEN),
1849                                        &mclist);
1850                 if (err)
1851                         printk(KERN_ERR "%s: Error %d setting multicast list.\n",
1852                                dev->name, err);
1853                 else
1854                         priv->mc_count = mc_count;
1855         }
1856
1857         /* Since we can set the promiscuous flag when it wasn't asked
1858            for, make sure the net_device knows about it. */
1859         if (priv->promiscuous)
1860                 dev->flags |= IFF_PROMISC;
1861         else
1862                 dev->flags &= ~IFF_PROMISC;
1863 }
1864
1865 /* This must be called from user context, without locks held - use
1866  * schedule_work() */
1867 static void orinoco_reset(struct net_device *dev)
1868 {
1869         struct orinoco_private *priv = netdev_priv(dev);
1870         struct hermes *hw = &priv->hw;
1871         int err;
1872         unsigned long flags;
1873
1874         if (orinoco_lock(priv, &flags) != 0)
1875                 /* When the hardware becomes available again, whatever
1876                  * detects that is responsible for re-initializing
1877                  * it. So no need for anything further */
1878                 return;
1879
1880         netif_stop_queue(dev);
1881
1882         /* Shut off interrupts.  Depending on what state the hardware
1883          * is in, this might not work, but we'll try anyway */
1884         hermes_set_irqmask(hw, 0);
1885         hermes_write_regn(hw, EVACK, 0xffff);
1886
1887         priv->hw_unavailable++;
1888         priv->last_linkstatus = 0xffff; /* firmware will have to reassociate */
1889         netif_carrier_off(dev);
1890
1891         orinoco_unlock(priv, &flags);
1892
1893         /* Scanning support: Cleanup of driver struct */
1894         kfree(priv->scan_result);
1895         priv->scan_result = NULL;
1896         priv->scan_inprogress = 0;
1897
1898         if (priv->hard_reset) {
1899                 err = (*priv->hard_reset)(priv);
1900                 if (err) {
1901                         printk(KERN_ERR "%s: orinoco_reset: Error %d "
1902                                "performing hard reset\n", dev->name, err);
1903                         goto disable;
1904                 }
1905         }
1906
1907         err = orinoco_reinit_firmware(dev);
1908         if (err) {
1909                 printk(KERN_ERR "%s: orinoco_reset: Error %d re-initializing firmware\n",
1910                        dev->name, err);
1911                 goto disable;
1912         }
1913
1914         spin_lock_irq(&priv->lock); /* This has to be called from user context */
1915
1916         priv->hw_unavailable--;
1917
1918         /* priv->open or priv->hw_unavailable might have changed while
1919          * we dropped the lock */
1920         if (priv->open && (! priv->hw_unavailable)) {
1921                 err = __orinoco_up(dev);
1922                 if (err) {
1923                         printk(KERN_ERR "%s: orinoco_reset: Error %d reenabling card\n",
1924                                dev->name, err);
1925                 } else
1926                         dev->trans_start = jiffies;
1927         }
1928
1929         spin_unlock_irq(&priv->lock);
1930
1931         return;
1932  disable:
1933         hermes_set_irqmask(hw, 0);
1934         netif_device_detach(dev);
1935         printk(KERN_ERR "%s: Device has been disabled!\n", dev->name);
1936 }
1937
1938 /********************************************************************/
1939 /* Interrupt handler                                                */
1940 /********************************************************************/
1941
1942 static void __orinoco_ev_tick(struct net_device *dev, hermes_t *hw)
1943 {
1944         printk(KERN_DEBUG "%s: TICK\n", dev->name);
1945 }
1946
1947 static void __orinoco_ev_wterr(struct net_device *dev, hermes_t *hw)
1948 {
1949         /* This seems to happen a fair bit under load, but ignoring it
1950            seems to work fine...*/
1951         printk(KERN_DEBUG "%s: MAC controller error (WTERR). Ignoring.\n",
1952                dev->name);
1953 }
1954
1955 irqreturn_t orinoco_interrupt(int irq, void *dev_id)
1956 {
1957         struct net_device *dev = dev_id;
1958         struct orinoco_private *priv = netdev_priv(dev);
1959         hermes_t *hw = &priv->hw;
1960         int count = MAX_IRQLOOPS_PER_IRQ;
1961         u16 evstat, events;
1962         /* These are used to detect a runaway interrupt situation */
1963         /* If we get more than MAX_IRQLOOPS_PER_JIFFY iterations in a jiffy,
1964          * we panic and shut down the hardware */
1965         static int last_irq_jiffy = 0; /* jiffies value the last time
1966                                         * we were called */
1967         static int loops_this_jiffy = 0;
1968         unsigned long flags;
1969
1970         if (orinoco_lock(priv, &flags) != 0) {
1971                 /* If hw is unavailable - we don't know if the irq was
1972                  * for us or not */
1973                 return IRQ_HANDLED;
1974         }
1975
1976         evstat = hermes_read_regn(hw, EVSTAT);
1977         events = evstat & hw->inten;
1978         if (! events) {
1979                 orinoco_unlock(priv, &flags);
1980                 return IRQ_NONE;
1981         }
1982
1983         if (jiffies != last_irq_jiffy)
1984                 loops_this_jiffy = 0;
1985         last_irq_jiffy = jiffies;
1986
1987         while (events && count--) {
1988                 if (++loops_this_jiffy > MAX_IRQLOOPS_PER_JIFFY) {
1989                         printk(KERN_WARNING "%s: IRQ handler is looping too "
1990                                "much! Resetting.\n", dev->name);
1991                         /* Disable interrupts for now */
1992                         hermes_set_irqmask(hw, 0);
1993                         schedule_work(&priv->reset_work);
1994                         break;
1995                 }
1996
1997                 /* Check the card hasn't been removed */
1998                 if (! hermes_present(hw)) {
1999                         DEBUG(0, "orinoco_interrupt(): card removed\n");
2000                         break;
2001                 }
2002
2003                 if (events & HERMES_EV_TICK)
2004                         __orinoco_ev_tick(dev, hw);
2005                 if (events & HERMES_EV_WTERR)
2006                         __orinoco_ev_wterr(dev, hw);
2007                 if (events & HERMES_EV_INFDROP)
2008                         __orinoco_ev_infdrop(dev, hw);
2009                 if (events & HERMES_EV_INFO)
2010                         __orinoco_ev_info(dev, hw);
2011                 if (events & HERMES_EV_RX)
2012                         __orinoco_ev_rx(dev, hw);
2013                 if (events & HERMES_EV_TXEXC)
2014                         __orinoco_ev_txexc(dev, hw);
2015                 if (events & HERMES_EV_TX)
2016                         __orinoco_ev_tx(dev, hw);
2017                 if (events & HERMES_EV_ALLOC)
2018                         __orinoco_ev_alloc(dev, hw);
2019
2020                 hermes_write_regn(hw, EVACK, evstat);
2021
2022                 evstat = hermes_read_regn(hw, EVSTAT);
2023                 events = evstat & hw->inten;
2024         };
2025
2026         orinoco_unlock(priv, &flags);
2027         return IRQ_HANDLED;
2028 }
2029
2030 /********************************************************************/
2031 /* Initialization                                                   */
2032 /********************************************************************/
2033
2034 struct comp_id {
2035         u16 id, variant, major, minor;
2036 } __attribute__ ((packed));
2037
2038 static inline fwtype_t determine_firmware_type(struct comp_id *nic_id)
2039 {
2040         if (nic_id->id < 0x8000)
2041                 return FIRMWARE_TYPE_AGERE;
2042         else if (nic_id->id == 0x8000 && nic_id->major == 0)
2043                 return FIRMWARE_TYPE_SYMBOL;
2044         else
2045                 return FIRMWARE_TYPE_INTERSIL;
2046 }
2047
2048 /* Set priv->firmware type, determine firmware properties */
2049 static int determine_firmware(struct net_device *dev)
2050 {
2051         struct orinoco_private *priv = netdev_priv(dev);
2052         hermes_t *hw = &priv->hw;
2053         int err;
2054         struct comp_id nic_id, sta_id;
2055         unsigned int firmver;
2056         char tmp[SYMBOL_MAX_VER_LEN+1];
2057
2058         /* Get the hardware version */
2059         err = HERMES_READ_RECORD(hw, USER_BAP, HERMES_RID_NICID, &nic_id);
2060         if (err) {
2061                 printk(KERN_ERR "%s: Cannot read hardware identity: error %d\n",
2062                        dev->name, err);
2063                 return err;
2064         }
2065
2066         le16_to_cpus(&nic_id.id);
2067         le16_to_cpus(&nic_id.variant);
2068         le16_to_cpus(&nic_id.major);
2069         le16_to_cpus(&nic_id.minor);
2070         printk(KERN_DEBUG "%s: Hardware identity %04x:%04x:%04x:%04x\n",
2071                dev->name, nic_id.id, nic_id.variant,
2072                nic_id.major, nic_id.minor);
2073
2074         priv->firmware_type = determine_firmware_type(&nic_id);
2075
2076         /* Get the firmware version */
2077         err = HERMES_READ_RECORD(hw, USER_BAP, HERMES_RID_STAID, &sta_id);
2078         if (err) {
2079                 printk(KERN_ERR "%s: Cannot read station identity: error %d\n",
2080                        dev->name, err);
2081                 return err;
2082         }
2083
2084         le16_to_cpus(&sta_id.id);
2085         le16_to_cpus(&sta_id.variant);
2086         le16_to_cpus(&sta_id.major);
2087         le16_to_cpus(&sta_id.minor);
2088         printk(KERN_DEBUG "%s: Station identity  %04x:%04x:%04x:%04x\n",
2089                dev->name, sta_id.id, sta_id.variant,
2090                sta_id.major, sta_id.minor);
2091
2092         switch (sta_id.id) {
2093         case 0x15:
2094                 printk(KERN_ERR "%s: Primary firmware is active\n",
2095                        dev->name);
2096                 return -ENODEV;
2097         case 0x14b:
2098                 printk(KERN_ERR "%s: Tertiary firmware is active\n",
2099                        dev->name);
2100                 return -ENODEV;
2101         case 0x1f:      /* Intersil, Agere, Symbol Spectrum24 */
2102         case 0x21:      /* Symbol Spectrum24 Trilogy */
2103                 break;
2104         default:
2105                 printk(KERN_NOTICE "%s: Unknown station ID, please report\n",
2106                        dev->name);
2107                 break;
2108         }
2109
2110         /* Default capabilities */
2111         priv->has_sensitivity = 1;
2112         priv->has_mwo = 0;
2113         priv->has_preamble = 0;
2114         priv->has_port3 = 1;
2115         priv->has_ibss = 1;
2116         priv->has_wep = 0;
2117         priv->has_big_wep = 0;
2118
2119         /* Determine capabilities from the firmware version */
2120         switch (priv->firmware_type) {
2121         case FIRMWARE_TYPE_AGERE:
2122                 /* Lucent Wavelan IEEE, Lucent Orinoco, Cabletron RoamAbout,
2123                    ELSA, Melco, HP, IBM, Dell 1150, Compaq 110/210 */
2124                 snprintf(priv->fw_name, sizeof(priv->fw_name) - 1,
2125                          "Lucent/Agere %d.%02d", sta_id.major, sta_id.minor);
2126
2127                 firmver = ((unsigned long)sta_id.major << 16) | sta_id.minor;
2128
2129                 priv->has_ibss = (firmver >= 0x60006);
2130                 priv->has_wep = (firmver >= 0x40020);
2131                 priv->has_big_wep = 1; /* FIXME: this is wrong - how do we tell
2132                                           Gold cards from the others? */
2133                 priv->has_mwo = (firmver >= 0x60000);
2134                 priv->has_pm = (firmver >= 0x40020); /* Don't work in 7.52 ? */
2135                 priv->ibss_port = 1;
2136                 priv->has_hostscan = (firmver >= 0x8000a);
2137                 priv->broken_monitor = (firmver >= 0x80000);
2138
2139                 /* Tested with Agere firmware :
2140                  *      1.16 ; 4.08 ; 4.52 ; 6.04 ; 6.16 ; 7.28 => Jean II
2141                  * Tested CableTron firmware : 4.32 => Anton */
2142                 break;
2143         case FIRMWARE_TYPE_SYMBOL:
2144                 /* Symbol , 3Com AirConnect, Intel, Ericsson WLAN */
2145                 /* Intel MAC : 00:02:B3:* */
2146                 /* 3Com MAC : 00:50:DA:* */
2147                 memset(tmp, 0, sizeof(tmp));
2148                 /* Get the Symbol firmware version */
2149                 err = hermes_read_ltv(hw, USER_BAP,
2150                                       HERMES_RID_SECONDARYVERSION_SYMBOL,
2151                                       SYMBOL_MAX_VER_LEN, NULL, &tmp);
2152                 if (err) {
2153                         printk(KERN_WARNING
2154                                "%s: Error %d reading Symbol firmware info. Wildly guessing capabilities...\n",
2155                                dev->name, err);
2156                         firmver = 0;
2157                         tmp[0] = '\0';
2158                 } else {
2159                         /* The firmware revision is a string, the format is
2160                          * something like : "V2.20-01".
2161                          * Quick and dirty parsing... - Jean II
2162                          */
2163                         firmver = ((tmp[1] - '0') << 16) | ((tmp[3] - '0') << 12)
2164                                 | ((tmp[4] - '0') << 8) | ((tmp[6] - '0') << 4)
2165                                 | (tmp[7] - '0');
2166
2167                         tmp[SYMBOL_MAX_VER_LEN] = '\0';
2168                 }
2169
2170                 snprintf(priv->fw_name, sizeof(priv->fw_name) - 1,
2171                          "Symbol %s", tmp);
2172
2173                 priv->has_ibss = (firmver >= 0x20000);
2174                 priv->has_wep = (firmver >= 0x15012);
2175                 priv->has_big_wep = (firmver >= 0x20000);
2176                 priv->has_pm = (firmver >= 0x20000 && firmver < 0x22000) ||
2177                                (firmver >= 0x29000 && firmver < 0x30000) ||
2178                                firmver >= 0x31000;
2179                 priv->has_preamble = (firmver >= 0x20000);
2180                 priv->ibss_port = 4;
2181                 priv->broken_disableport = (firmver == 0x25013) ||
2182                                            (firmver >= 0x30000 && firmver <= 0x31000);
2183                 priv->has_hostscan = (firmver >= 0x31001) ||
2184                                      (firmver >= 0x29057 && firmver < 0x30000);
2185                 /* Tested with Intel firmware : 0x20015 => Jean II */
2186                 /* Tested with 3Com firmware : 0x15012 & 0x22001 => Jean II */
2187                 break;
2188         case FIRMWARE_TYPE_INTERSIL:
2189                 /* D-Link, Linksys, Adtron, ZoomAir, and many others...
2190                  * Samsung, Compaq 100/200 and Proxim are slightly
2191                  * different and less well tested */
2192                 /* D-Link MAC : 00:40:05:* */
2193                 /* Addtron MAC : 00:90:D1:* */
2194                 snprintf(priv->fw_name, sizeof(priv->fw_name) - 1,
2195                          "Intersil %d.%d.%d", sta_id.major, sta_id.minor,
2196                          sta_id.variant);
2197
2198                 firmver = ((unsigned long)sta_id.major << 16) |
2199                         ((unsigned long)sta_id.minor << 8) | sta_id.variant;
2200
2201                 priv->has_ibss = (firmver >= 0x000700); /* FIXME */
2202                 priv->has_big_wep = priv->has_wep = (firmver >= 0x000800);
2203                 priv->has_pm = (firmver >= 0x000700);
2204                 priv->has_hostscan = (firmver >= 0x010301);
2205
2206                 if (firmver >= 0x000800)
2207                         priv->ibss_port = 0;
2208                 else {
2209                         printk(KERN_NOTICE "%s: Intersil firmware earlier "
2210                                "than v0.8.x - several features not supported\n",
2211                                dev->name);
2212                         priv->ibss_port = 1;
2213                 }
2214                 break;
2215         }
2216         printk(KERN_DEBUG "%s: Firmware determined as %s\n", dev->name,
2217                priv->fw_name);
2218
2219         return 0;
2220 }
2221
2222 static int orinoco_init(struct net_device *dev)
2223 {
2224         struct orinoco_private *priv = netdev_priv(dev);
2225         hermes_t *hw = &priv->hw;
2226         int err = 0;
2227         struct hermes_idstring nickbuf;
2228         u16 reclen;
2229         int len;
2230
2231         /* No need to lock, the hw_unavailable flag is already set in
2232          * alloc_orinocodev() */
2233         priv->nicbuf_size = IEEE80211_FRAME_LEN + ETH_HLEN;
2234
2235         /* Initialize the firmware */
2236         err = hermes_init(hw);
2237         if (err != 0) {
2238                 printk(KERN_ERR "%s: failed to initialize firmware (err = %d)\n",
2239                        dev->name, err);
2240                 goto out;
2241         }
2242
2243         err = determine_firmware(dev);
2244         if (err != 0) {
2245                 printk(KERN_ERR "%s: Incompatible firmware, aborting\n",
2246                        dev->name);
2247                 goto out;
2248         }
2249
2250         if (priv->has_port3)
2251                 printk(KERN_DEBUG "%s: Ad-hoc demo mode supported\n", dev->name);
2252         if (priv->has_ibss)
2253                 printk(KERN_DEBUG "%s: IEEE standard IBSS ad-hoc mode supported\n",
2254                        dev->name);
2255         if (priv->has_wep) {
2256                 printk(KERN_DEBUG "%s: WEP supported, ", dev->name);
2257                 if (priv->has_big_wep)
2258                         printk("104-bit key\n");
2259                 else
2260                         printk("40-bit key\n");
2261         }
2262
2263         /* Get the MAC address */
2264         err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CNFOWNMACADDR,
2265                               ETH_ALEN, NULL, dev->dev_addr);
2266         if (err) {
2267                 printk(KERN_WARNING "%s: failed to read MAC address!\n",
2268                        dev->name);
2269                 goto out;
2270         }
2271
2272         printk(KERN_DEBUG "%s: MAC address %02X:%02X:%02X:%02X:%02X:%02X\n",
2273                dev->name, dev->dev_addr[0], dev->dev_addr[1],
2274                dev->dev_addr[2], dev->dev_addr[3], dev->dev_addr[4],
2275                dev->dev_addr[5]);
2276
2277         /* Get the station name */
2278         err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CNFOWNNAME,
2279                               sizeof(nickbuf), &reclen, &nickbuf);
2280         if (err) {
2281                 printk(KERN_ERR "%s: failed to read station name\n",
2282                        dev->name);
2283                 goto out;
2284         }
2285         if (nickbuf.len)
2286                 len = min(IW_ESSID_MAX_SIZE, (int)le16_to_cpu(nickbuf.len));
2287         else
2288                 len = min(IW_ESSID_MAX_SIZE, 2 * reclen);
2289         memcpy(priv->nick, &nickbuf.val, len);
2290         priv->nick[len] = '\0';
2291
2292         printk(KERN_DEBUG "%s: Station name \"%s\"\n", dev->name, priv->nick);
2293
2294         err = orinoco_allocate_fid(dev);
2295         if (err) {
2296                 printk(KERN_ERR "%s: failed to allocate NIC buffer!\n",
2297                        dev->name);
2298                 goto out;
2299         }
2300
2301         /* Get allowed channels */
2302         err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_CHANNELLIST,
2303                                   &priv->channel_mask);
2304         if (err) {
2305                 printk(KERN_ERR "%s: failed to read channel list!\n",
2306                        dev->name);
2307                 goto out;
2308         }
2309
2310         /* Get initial AP density */
2311         err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_CNFSYSTEMSCALE,
2312                                   &priv->ap_density);
2313         if (err || priv->ap_density < 1 || priv->ap_density > 3) {
2314                 priv->has_sensitivity = 0;
2315         }
2316
2317         /* Get initial RTS threshold */
2318         err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_CNFRTSTHRESHOLD,
2319                                   &priv->rts_thresh);
2320         if (err) {
2321                 printk(KERN_ERR "%s: failed to read RTS threshold!\n",
2322                        dev->name);
2323                 goto out;
2324         }
2325
2326         /* Get initial fragmentation settings */
2327         if (priv->has_mwo)
2328                 err = hermes_read_wordrec(hw, USER_BAP,
2329                                           HERMES_RID_CNFMWOROBUST_AGERE,
2330                                           &priv->mwo_robust);
2331         else
2332                 err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_CNFFRAGMENTATIONTHRESHOLD,
2333                                           &priv->frag_thresh);
2334         if (err) {
2335                 printk(KERN_ERR "%s: failed to read fragmentation settings!\n",
2336                        dev->name);
2337                 goto out;
2338         }
2339
2340         /* Power management setup */
2341         if (priv->has_pm) {
2342                 priv->pm_on = 0;
2343                 priv->pm_mcast = 1;
2344                 err = hermes_read_wordrec(hw, USER_BAP,
2345                                           HERMES_RID_CNFMAXSLEEPDURATION,
2346                                           &priv->pm_period);
2347                 if (err) {
2348                         printk(KERN_ERR "%s: failed to read power management period!\n",
2349                                dev->name);
2350                         goto out;
2351                 }
2352                 err = hermes_read_wordrec(hw, USER_BAP,
2353                                           HERMES_RID_CNFPMHOLDOVERDURATION,
2354                                           &priv->pm_timeout);
2355                 if (err) {
2356                         printk(KERN_ERR "%s: failed to read power management timeout!\n",
2357                                dev->name);
2358                         goto out;
2359                 }
2360         }
2361
2362         /* Preamble setup */
2363         if (priv->has_preamble) {
2364                 err = hermes_read_wordrec(hw, USER_BAP,
2365                                           HERMES_RID_CNFPREAMBLE_SYMBOL,
2366                                           &priv->preamble);
2367                 if (err)
2368                         goto out;
2369         }
2370
2371         /* Set up the default configuration */
2372         priv->iw_mode = IW_MODE_INFRA;
2373         /* By default use IEEE/IBSS ad-hoc mode if we have it */
2374         priv->prefer_port3 = priv->has_port3 && (! priv->has_ibss);
2375         set_port_type(priv);
2376         priv->channel = 0; /* use firmware default */
2377
2378         priv->promiscuous = 0;
2379         priv->wep_on = 0;
2380         priv->tx_key = 0;
2381
2382         /* Make the hardware available, as long as it hasn't been
2383          * removed elsewhere (e.g. by PCMCIA hot unplug) */
2384         spin_lock_irq(&priv->lock);
2385         priv->hw_unavailable--;
2386         spin_unlock_irq(&priv->lock);
2387
2388         printk(KERN_DEBUG "%s: ready\n", dev->name);
2389
2390  out:
2391         return err;
2392 }
2393
2394 struct net_device *alloc_orinocodev(int sizeof_card,
2395                                     int (*hard_reset)(struct orinoco_private *))
2396 {
2397         struct net_device *dev;
2398         struct orinoco_private *priv;
2399
2400         dev = alloc_etherdev(sizeof(struct orinoco_private) + sizeof_card);
2401         if (! dev)
2402                 return NULL;
2403         priv = netdev_priv(dev);
2404         priv->ndev = dev;
2405         if (sizeof_card)
2406                 priv->card = (void *)((unsigned long)priv
2407                                       + sizeof(struct orinoco_private));
2408         else
2409                 priv->card = NULL;
2410
2411         /* Setup / override net_device fields */
2412         dev->init = orinoco_init;
2413         dev->hard_start_xmit = orinoco_xmit;
2414         dev->tx_timeout = orinoco_tx_timeout;
2415         dev->watchdog_timeo = HZ; /* 1 second timeout */
2416         dev->get_stats = orinoco_get_stats;
2417         dev->ethtool_ops = &orinoco_ethtool_ops;
2418         dev->wireless_handlers = (struct iw_handler_def *)&orinoco_handler_def;
2419 #ifdef WIRELESS_SPY
2420         priv->wireless_data.spy_data = &priv->spy_data;
2421         dev->wireless_data = &priv->wireless_data;
2422 #endif
2423         dev->change_mtu = orinoco_change_mtu;
2424         dev->set_multicast_list = orinoco_set_multicast_list;
2425         /* we use the default eth_mac_addr for setting the MAC addr */
2426
2427         /* Set up default callbacks */
2428         dev->open = orinoco_open;
2429         dev->stop = orinoco_stop;
2430         priv->hard_reset = hard_reset;
2431
2432         spin_lock_init(&priv->lock);
2433         priv->open = 0;
2434         priv->hw_unavailable = 1; /* orinoco_init() must clear this
2435                                    * before anything else touches the
2436                                    * hardware */
2437         INIT_WORK(&priv->reset_work, (void (*)(void *))orinoco_reset, dev);
2438         INIT_WORK(&priv->join_work, (void (*)(void *))orinoco_join_ap, dev);
2439         INIT_WORK(&priv->wevent_work, (void (*)(void *))orinoco_send_wevents, dev);
2440
2441         netif_carrier_off(dev);
2442         priv->last_linkstatus = 0xffff;
2443
2444         return dev;
2445
2446 }
2447
2448 void free_orinocodev(struct net_device *dev)
2449 {
2450         struct orinoco_private *priv = netdev_priv(dev);
2451
2452         kfree(priv->scan_result);
2453         free_netdev(dev);
2454 }
2455
2456 /********************************************************************/
2457 /* Wireless extensions                                              */
2458 /********************************************************************/
2459
2460 /* Return : < 0 -> error code ; >= 0 -> length */
2461 static int orinoco_hw_get_essid(struct orinoco_private *priv, int *active,
2462                                 char buf[IW_ESSID_MAX_SIZE+1])
2463 {
2464         hermes_t *hw = &priv->hw;
2465         int err = 0;
2466         struct hermes_idstring essidbuf;
2467         char *p = (char *)(&essidbuf.val);
2468         int len;
2469         unsigned long flags;
2470
2471         if (orinoco_lock(priv, &flags) != 0)
2472                 return -EBUSY;
2473
2474         if (strlen(priv->desired_essid) > 0) {
2475                 /* We read the desired SSID from the hardware rather
2476                    than from priv->desired_essid, just in case the
2477                    firmware is allowed to change it on us. I'm not
2478                    sure about this */
2479                 /* My guess is that the OWNSSID should always be whatever
2480                  * we set to the card, whereas CURRENT_SSID is the one that
2481                  * may change... - Jean II */
2482                 u16 rid;
2483
2484                 *active = 1;
2485
2486                 rid = (priv->port_type == 3) ? HERMES_RID_CNFOWNSSID :
2487                         HERMES_RID_CNFDESIREDSSID;
2488
2489                 err = hermes_read_ltv(hw, USER_BAP, rid, sizeof(essidbuf),
2490                                       NULL, &essidbuf);
2491                 if (err)
2492                         goto fail_unlock;
2493         } else {
2494                 *active = 0;
2495
2496                 err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENTSSID,
2497                                       sizeof(essidbuf), NULL, &essidbuf);
2498                 if (err)
2499                         goto fail_unlock;
2500         }
2501
2502         len = le16_to_cpu(essidbuf.len);
2503         BUG_ON(len > IW_ESSID_MAX_SIZE);
2504
2505         memset(buf, 0, IW_ESSID_MAX_SIZE);
2506         memcpy(buf, p, len);
2507         err = len;
2508
2509  fail_unlock:
2510         orinoco_unlock(priv, &flags);
2511
2512         return err;
2513 }
2514
2515 static long orinoco_hw_get_freq(struct orinoco_private *priv)
2516 {
2517
2518         hermes_t *hw = &priv->hw;
2519         int err = 0;
2520         u16 channel;
2521         long freq = 0;
2522         unsigned long flags;
2523
2524         if (orinoco_lock(priv, &flags) != 0)
2525                 return -EBUSY;
2526
2527         err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_CURRENTCHANNEL, &channel);
2528         if (err)
2529                 goto out;
2530
2531         /* Intersil firmware 1.3.5 returns 0 when the interface is down */
2532         if (channel == 0) {
2533                 err = -EBUSY;
2534                 goto out;
2535         }
2536
2537         if ( (channel < 1) || (channel > NUM_CHANNELS) ) {
2538                 printk(KERN_WARNING "%s: Channel out of range (%d)!\n",
2539                        priv->ndev->name, channel);
2540                 err = -EBUSY;
2541                 goto out;
2542
2543         }
2544         freq = channel_frequency[channel-1] * 100000;
2545
2546  out:
2547         orinoco_unlock(priv, &flags);
2548
2549         if (err > 0)
2550                 err = -EBUSY;
2551         return err ? err : freq;
2552 }
2553
2554 static int orinoco_hw_get_bitratelist(struct orinoco_private *priv,
2555                                       int *numrates, s32 *rates, int max)
2556 {
2557         hermes_t *hw = &priv->hw;
2558         struct hermes_idstring list;
2559         unsigned char *p = (unsigned char *)&list.val;
2560         int err = 0;
2561         int num;
2562         int i;
2563         unsigned long flags;
2564
2565         if (orinoco_lock(priv, &flags) != 0)
2566                 return -EBUSY;
2567
2568         err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_SUPPORTEDDATARATES,
2569                               sizeof(list), NULL, &list);
2570         orinoco_unlock(priv, &flags);
2571
2572         if (err)
2573                 return err;
2574
2575         num = le16_to_cpu(list.len);
2576         *numrates = num;
2577         num = min(num, max);
2578
2579         for (i = 0; i < num; i++) {
2580                 rates[i] = (p[i] & 0x7f) * 500000; /* convert to bps */
2581         }
2582
2583         return 0;
2584 }
2585
2586 static int orinoco_ioctl_getname(struct net_device *dev,
2587                                  struct iw_request_info *info,
2588                                  char *name,
2589                                  char *extra)
2590 {
2591         struct orinoco_private *priv = netdev_priv(dev);
2592         int numrates;
2593         int err;
2594
2595         err = orinoco_hw_get_bitratelist(priv, &numrates, NULL, 0);
2596
2597         if (!err && (numrates > 2))
2598                 strcpy(name, "IEEE 802.11b");
2599         else
2600                 strcpy(name, "IEEE 802.11-DS");
2601
2602         return 0;
2603 }
2604
2605 static int orinoco_ioctl_setwap(struct net_device *dev,
2606                                 struct iw_request_info *info,
2607                                 struct sockaddr *ap_addr,
2608                                 char *extra)
2609 {
2610         struct orinoco_private *priv = netdev_priv(dev);
2611         int err = -EINPROGRESS;         /* Call commit handler */
2612         unsigned long flags;
2613         static const u8 off_addr[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
2614         static const u8 any_addr[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
2615
2616         if (orinoco_lock(priv, &flags) != 0)
2617                 return -EBUSY;
2618
2619         /* Enable automatic roaming - no sanity checks are needed */
2620         if (memcmp(&ap_addr->sa_data, off_addr, ETH_ALEN) == 0 ||
2621             memcmp(&ap_addr->sa_data, any_addr, ETH_ALEN) == 0) {
2622                 priv->bssid_fixed = 0;
2623                 memset(priv->desired_bssid, 0, ETH_ALEN);
2624
2625                 /* "off" means keep existing connection */
2626                 if (ap_addr->sa_data[0] == 0) {
2627                         __orinoco_hw_set_wap(priv);
2628                         err = 0;
2629                 }
2630                 goto out;
2631         }
2632
2633         if (priv->firmware_type == FIRMWARE_TYPE_AGERE) {
2634                 printk(KERN_WARNING "%s: Lucent/Agere firmware doesn't "
2635                        "support manual roaming\n",
2636                        dev->name);
2637                 err = -EOPNOTSUPP;
2638                 goto out;
2639         }
2640
2641         if (priv->iw_mode != IW_MODE_INFRA) {
2642                 printk(KERN_WARNING "%s: Manual roaming supported only in "
2643                        "managed mode\n", dev->name);
2644                 err = -EOPNOTSUPP;
2645                 goto out;
2646         }
2647
2648         /* Intersil firmware hangs without Desired ESSID */
2649         if (priv->firmware_type == FIRMWARE_TYPE_INTERSIL &&
2650             strlen(priv->desired_essid) == 0) {
2651                 printk(KERN_WARNING "%s: Desired ESSID must be set for "
2652                        "manual roaming\n", dev->name);
2653                 err = -EOPNOTSUPP;
2654                 goto out;
2655         }
2656
2657         /* Finally, enable manual roaming */
2658         priv->bssid_fixed = 1;
2659         memcpy(priv->desired_bssid, &ap_addr->sa_data, ETH_ALEN);
2660
2661  out:
2662         orinoco_unlock(priv, &flags);
2663         return err;
2664 }
2665
2666 static int orinoco_ioctl_getwap(struct net_device *dev,
2667                                 struct iw_request_info *info,
2668                                 struct sockaddr *ap_addr,
2669                                 char *extra)
2670 {
2671         struct orinoco_private *priv = netdev_priv(dev);
2672
2673         hermes_t *hw = &priv->hw;
2674         int err = 0;
2675         unsigned long flags;
2676
2677         if (orinoco_lock(priv, &flags) != 0)
2678                 return -EBUSY;
2679
2680         ap_addr->sa_family = ARPHRD_ETHER;
2681         err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENTBSSID,
2682                               ETH_ALEN, NULL, ap_addr->sa_data);
2683
2684         orinoco_unlock(priv, &flags);
2685
2686         return err;
2687 }
2688
2689 static int orinoco_ioctl_setmode(struct net_device *dev,
2690                                  struct iw_request_info *info,
2691                                  u32 *mode,
2692                                  char *extra)
2693 {
2694         struct orinoco_private *priv = netdev_priv(dev);
2695         int err = -EINPROGRESS;         /* Call commit handler */
2696         unsigned long flags;
2697
2698         if (priv->iw_mode == *mode)
2699                 return 0;
2700
2701         if (orinoco_lock(priv, &flags) != 0)
2702                 return -EBUSY;
2703
2704         switch (*mode) {
2705         case IW_MODE_ADHOC:
2706                 if (!priv->has_ibss && !priv->has_port3)
2707                         err = -EOPNOTSUPP;
2708                 break;
2709
2710         case IW_MODE_INFRA:
2711                 break;
2712
2713         case IW_MODE_MONITOR:
2714                 if (priv->broken_monitor && !force_monitor) {
2715                         printk(KERN_WARNING "%s: Monitor mode support is "
2716                                "buggy in this firmware, not enabling\n",
2717                                dev->name);
2718                         err = -EOPNOTSUPP;
2719                 }
2720                 break;
2721
2722         default:
2723                 err = -EOPNOTSUPP;
2724                 break;
2725         }
2726
2727         if (err == -EINPROGRESS) {
2728                 priv->iw_mode = *mode;
2729                 set_port_type(priv);
2730         }
2731
2732         orinoco_unlock(priv, &flags);
2733
2734         return err;
2735 }
2736
2737 static int orinoco_ioctl_getmode(struct net_device *dev,
2738                                  struct iw_request_info *info,
2739                                  u32 *mode,
2740                                  char *extra)
2741 {
2742         struct orinoco_private *priv = netdev_priv(dev);
2743
2744         *mode = priv->iw_mode;
2745         return 0;
2746 }
2747
2748 static int orinoco_ioctl_getiwrange(struct net_device *dev,
2749                                     struct iw_request_info *info,
2750                                     struct iw_point *rrq,
2751                                     char *extra)
2752 {
2753         struct orinoco_private *priv = netdev_priv(dev);
2754         int err = 0;
2755         struct iw_range *range = (struct iw_range *) extra;
2756         int numrates;
2757         int i, k;
2758
2759         rrq->length = sizeof(struct iw_range);
2760         memset(range, 0, sizeof(struct iw_range));
2761
2762         range->we_version_compiled = WIRELESS_EXT;
2763         range->we_version_source = 14;
2764
2765         /* Set available channels/frequencies */
2766         range->num_channels = NUM_CHANNELS;
2767         k = 0;
2768         for (i = 0; i < NUM_CHANNELS; i++) {
2769                 if (priv->channel_mask & (1 << i)) {
2770                         range->freq[k].i = i + 1;
2771                         range->freq[k].m = channel_frequency[i] * 100000;
2772                         range->freq[k].e = 1;
2773                         k++;
2774                 }
2775
2776                 if (k >= IW_MAX_FREQUENCIES)
2777                         break;
2778         }
2779         range->num_frequency = k;
2780         range->sensitivity = 3;
2781
2782         if (priv->has_wep) {
2783                 range->max_encoding_tokens = ORINOCO_MAX_KEYS;
2784                 range->encoding_size[0] = SMALL_KEY_SIZE;
2785                 range->num_encoding_sizes = 1;
2786
2787                 if (priv->has_big_wep) {
2788                         range->encoding_size[1] = LARGE_KEY_SIZE;
2789                         range->num_encoding_sizes = 2;
2790                 }
2791         }
2792
2793         if ((priv->iw_mode == IW_MODE_ADHOC) && (!SPY_NUMBER(priv))){
2794                 /* Quality stats meaningless in ad-hoc mode */
2795         } else {
2796                 range->max_qual.qual = 0x8b - 0x2f;
2797                 range->max_qual.level = 0x2f - 0x95 - 1;
2798                 range->max_qual.noise = 0x2f - 0x95 - 1;
2799                 /* Need to get better values */
2800                 range->avg_qual.qual = 0x24;
2801                 range->avg_qual.level = 0xC2;
2802                 range->avg_qual.noise = 0x9E;
2803         }
2804
2805         err = orinoco_hw_get_bitratelist(priv, &numrates,
2806                                          range->bitrate, IW_MAX_BITRATES);
2807         if (err)
2808                 return err;
2809         range->num_bitrates = numrates;
2810
2811         /* Set an indication of the max TCP throughput in bit/s that we can
2812          * expect using this interface. May be use for QoS stuff...
2813          * Jean II */
2814         if (numrates > 2)
2815                 range->throughput = 5 * 1000 * 1000;    /* ~5 Mb/s */
2816         else
2817                 range->throughput = 1.5 * 1000 * 1000;  /* ~1.5 Mb/s */
2818
2819         range->min_rts = 0;
2820         range->max_rts = 2347;
2821         range->min_frag = 256;
2822         range->max_frag = 2346;
2823
2824         range->min_pmp = 0;
2825         range->max_pmp = 65535000;
2826         range->min_pmt = 0;
2827         range->max_pmt = 65535 * 1000;  /* ??? */
2828         range->pmp_flags = IW_POWER_PERIOD;
2829         range->pmt_flags = IW_POWER_TIMEOUT;
2830         range->pm_capa = IW_POWER_PERIOD | IW_POWER_TIMEOUT | IW_POWER_UNICAST_R;
2831
2832         range->retry_capa = IW_RETRY_LIMIT | IW_RETRY_LIFETIME;
2833         range->retry_flags = IW_RETRY_LIMIT;
2834         range->r_time_flags = IW_RETRY_LIFETIME;
2835         range->min_retry = 0;
2836         range->max_retry = 65535;       /* ??? */
2837         range->min_r_time = 0;
2838         range->max_r_time = 65535 * 1000;       /* ??? */
2839
2840         /* Event capability (kernel) */
2841         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
2842         /* Event capability (driver) */
2843         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWTHRSPY);
2844         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
2845         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
2846         IW_EVENT_CAPA_SET(range->event_capa, IWEVTXDROP);
2847
2848         return 0;
2849 }
2850
2851 static int orinoco_ioctl_setiwencode(struct net_device *dev,
2852                                      struct iw_request_info *info,
2853                                      struct iw_point *erq,
2854                                      char *keybuf)
2855 {
2856         struct orinoco_private *priv = netdev_priv(dev);
2857         int index = (erq->flags & IW_ENCODE_INDEX) - 1;
2858         int setindex = priv->tx_key;
2859         int enable = priv->wep_on;
2860         int restricted = priv->wep_restrict;
2861         u16 xlen = 0;
2862         int err = -EINPROGRESS;         /* Call commit handler */
2863         unsigned long flags;
2864
2865         if (! priv->has_wep)
2866                 return -EOPNOTSUPP;
2867
2868         if (erq->pointer) {
2869                 /* We actually have a key to set - check its length */
2870                 if (erq->length > LARGE_KEY_SIZE)
2871                         return -E2BIG;
2872
2873                 if ( (erq->length > SMALL_KEY_SIZE) && !priv->has_big_wep )
2874                         return -E2BIG;
2875         }
2876
2877         if (orinoco_lock(priv, &flags) != 0)
2878                 return -EBUSY;
2879
2880         if (erq->length > 0) {
2881                 if ((index < 0) || (index >= ORINOCO_MAX_KEYS))
2882                         index = priv->tx_key;
2883
2884                 /* Adjust key length to a supported value */
2885                 if (erq->length > SMALL_KEY_SIZE) {
2886                         xlen = LARGE_KEY_SIZE;
2887                 } else if (erq->length > 0) {
2888                         xlen = SMALL_KEY_SIZE;
2889                 } else
2890                         xlen = 0;
2891
2892                 /* Switch on WEP if off */
2893                 if ((!enable) && (xlen > 0)) {
2894                         setindex = index;
2895                         enable = 1;
2896                 }
2897         } else {
2898                 /* Important note : if the user do "iwconfig eth0 enc off",
2899                  * we will arrive there with an index of -1. This is valid
2900                  * but need to be taken care off... Jean II */
2901                 if ((index < 0) || (index >= ORINOCO_MAX_KEYS)) {
2902                         if((index != -1) || (erq->flags == 0)) {
2903                                 err = -EINVAL;
2904                                 goto out;
2905                         }
2906                 } else {
2907                         /* Set the index : Check that the key is valid */
2908                         if(priv->keys[index].len == 0) {
2909                                 err = -EINVAL;
2910                                 goto out;
2911                         }
2912                         setindex = index;
2913                 }
2914         }
2915
2916         if (erq->flags & IW_ENCODE_DISABLED)
2917                 enable = 0;
2918         if (erq->flags & IW_ENCODE_OPEN)
2919                 restricted = 0;
2920         if (erq->flags & IW_ENCODE_RESTRICTED)
2921                 restricted = 1;
2922
2923         if (erq->pointer && erq->length > 0) {
2924                 priv->keys[index].len = cpu_to_le16(xlen);
2925                 memset(priv->keys[index].data, 0,
2926                        sizeof(priv->keys[index].data));
2927                 memcpy(priv->keys[index].data, keybuf, erq->length);
2928         }
2929         priv->tx_key = setindex;
2930
2931         /* Try fast key change if connected and only keys are changed */
2932         if (priv->wep_on && enable && (priv->wep_restrict == restricted) &&
2933             netif_carrier_ok(dev)) {
2934                 err = __orinoco_hw_setup_wepkeys(priv);
2935                 /* No need to commit if successful */
2936                 goto out;
2937         }
2938
2939         priv->wep_on = enable;
2940         priv->wep_restrict = restricted;
2941
2942  out:
2943         orinoco_unlock(priv, &flags);
2944
2945         return err;
2946 }
2947
2948 static int orinoco_ioctl_getiwencode(struct net_device *dev,
2949                                      struct iw_request_info *info,
2950                                      struct iw_point *erq,
2951                                      char *keybuf)
2952 {
2953         struct orinoco_private *priv = netdev_priv(dev);
2954         int index = (erq->flags & IW_ENCODE_INDEX) - 1;
2955         u16 xlen = 0;
2956         unsigned long flags;
2957
2958         if (! priv->has_wep)
2959                 return -EOPNOTSUPP;
2960
2961         if (orinoco_lock(priv, &flags) != 0)
2962                 return -EBUSY;
2963
2964         if ((index < 0) || (index >= ORINOCO_MAX_KEYS))
2965                 index = priv->tx_key;
2966
2967         erq->flags = 0;
2968         if (! priv->wep_on)
2969                 erq->flags |= IW_ENCODE_DISABLED;
2970         erq->flags |= index + 1;
2971
2972         if (priv->wep_restrict)
2973                 erq->flags |= IW_ENCODE_RESTRICTED;
2974         else
2975                 erq->flags |= IW_ENCODE_OPEN;
2976
2977         xlen = le16_to_cpu(priv->keys[index].len);
2978
2979         erq->length = xlen;
2980
2981         memcpy(keybuf, priv->keys[index].data, ORINOCO_MAX_KEY_SIZE);
2982
2983         orinoco_unlock(priv, &flags);
2984         return 0;
2985 }
2986
2987 static int orinoco_ioctl_setessid(struct net_device *dev,
2988                                   struct iw_request_info *info,
2989                                   struct iw_point *erq,
2990                                   char *essidbuf)
2991 {
2992         struct orinoco_private *priv = netdev_priv(dev);
2993         unsigned long flags;
2994
2995         /* Note : ESSID is ignored in Ad-Hoc demo mode, but we can set it
2996          * anyway... - Jean II */
2997
2998         /* Hum... Should not use Wireless Extension constant (may change),
2999          * should use our own... - Jean II */
3000         if (erq->length > IW_ESSID_MAX_SIZE)
3001                 return -E2BIG;
3002
3003         if (orinoco_lock(priv, &flags) != 0)
3004                 return -EBUSY;
3005
3006         /* NULL the string (for NULL termination & ESSID = ANY) - Jean II */
3007         memset(priv->desired_essid, 0, sizeof(priv->desired_essid));
3008
3009         /* If not ANY, get the new ESSID */
3010         if (erq->flags) {
3011                 memcpy(priv->desired_essid, essidbuf, erq->length);
3012         }
3013
3014         orinoco_unlock(priv, &flags);
3015
3016         return -EINPROGRESS;            /* Call commit handler */
3017 }
3018
3019 static int orinoco_ioctl_getessid(struct net_device *dev,
3020                                   struct iw_request_info *info,
3021                                   struct iw_point *erq,
3022                                   char *essidbuf)
3023 {
3024         struct orinoco_private *priv = netdev_priv(dev);
3025         int active;
3026         int err = 0;
3027         unsigned long flags;
3028
3029         if (netif_running(dev)) {
3030                 err = orinoco_hw_get_essid(priv, &active, essidbuf);
3031                 if (err < 0)
3032                         return err;
3033                 erq->length = err;
3034         } else {
3035                 if (orinoco_lock(priv, &flags) != 0)
3036                         return -EBUSY;
3037                 memcpy(essidbuf, priv->desired_essid, IW_ESSID_MAX_SIZE);
3038                 erq->length = strlen(priv->desired_essid);
3039                 orinoco_unlock(priv, &flags);
3040         }
3041
3042         erq->flags = 1;
3043
3044         return 0;
3045 }
3046
3047 static int orinoco_ioctl_setnick(struct net_device *dev,
3048                                  struct iw_request_info *info,
3049                                  struct iw_point *nrq,
3050                                  char *nickbuf)
3051 {
3052         struct orinoco_private *priv = netdev_priv(dev);
3053         unsigned long flags;
3054
3055         if (nrq->length > IW_ESSID_MAX_SIZE)
3056                 return -E2BIG;
3057
3058         if (orinoco_lock(priv, &flags) != 0)
3059                 return -EBUSY;
3060
3061         memset(priv->nick, 0, sizeof(priv->nick));
3062         memcpy(priv->nick, nickbuf, nrq->length);
3063
3064         orinoco_unlock(priv, &flags);
3065
3066         return -EINPROGRESS;            /* Call commit handler */
3067 }
3068
3069 static int orinoco_ioctl_getnick(struct net_device *dev,
3070                                  struct iw_request_info *info,
3071                                  struct iw_point *nrq,
3072                                  char *nickbuf)
3073 {
3074         struct orinoco_private *priv = netdev_priv(dev);
3075         unsigned long flags;
3076
3077         if (orinoco_lock(priv, &flags) != 0)
3078                 return -EBUSY;
3079
3080         memcpy(nickbuf, priv->nick, IW_ESSID_MAX_SIZE);
3081         orinoco_unlock(priv, &flags);
3082
3083         nrq->length = strlen(priv->nick);
3084
3085         return 0;
3086 }
3087
3088 static int orinoco_ioctl_setfreq(struct net_device *dev,
3089                                  struct iw_request_info *info,
3090                                  struct iw_freq *frq,
3091                                  char *extra)
3092 {
3093         struct orinoco_private *priv = netdev_priv(dev);
3094         int chan = -1;
3095         unsigned long flags;
3096         int err = -EINPROGRESS;         /* Call commit handler */
3097
3098         /* In infrastructure mode the AP sets the channel */
3099         if (priv->iw_mode == IW_MODE_INFRA)
3100                 return -EBUSY;
3101
3102         if ( (frq->e == 0) && (frq->m <= 1000) ) {
3103                 /* Setting by channel number */
3104                 chan = frq->m;
3105         } else {
3106                 /* Setting by frequency - search the table */
3107                 int mult = 1;
3108                 int i;
3109
3110                 for (i = 0; i < (6 - frq->e); i++)
3111                         mult *= 10;
3112
3113                 for (i = 0; i < NUM_CHANNELS; i++)
3114                         if (frq->m == (channel_frequency[i] * mult))
3115                                 chan = i+1;
3116         }
3117
3118         if ( (chan < 1) || (chan > NUM_CHANNELS) ||
3119              ! (priv->channel_mask & (1 << (chan-1)) ) )
3120                 return -EINVAL;
3121
3122         if (orinoco_lock(priv, &flags) != 0)
3123                 return -EBUSY;
3124
3125         priv->channel = chan;
3126         if (priv->iw_mode == IW_MODE_MONITOR) {
3127                 /* Fast channel change - no commit if successful */
3128                 hermes_t *hw = &priv->hw;
3129                 err = hermes_docmd_wait(hw, HERMES_CMD_TEST |
3130                                             HERMES_TEST_SET_CHANNEL,
3131                                         chan, NULL);
3132         }
3133         orinoco_unlock(priv, &flags);
3134
3135         return err;
3136 }
3137
3138 static int orinoco_ioctl_getfreq(struct net_device *dev,
3139                                  struct iw_request_info *info,
3140                                  struct iw_freq *frq,
3141                                  char *extra)
3142 {
3143         struct orinoco_private *priv = netdev_priv(dev);
3144         int tmp;
3145
3146         /* Locking done in there */
3147         tmp = orinoco_hw_get_freq(priv);
3148         if (tmp < 0) {
3149                 return tmp;
3150         }
3151
3152         frq->m = tmp;
3153         frq->e = 1;
3154
3155         return 0;
3156 }
3157
3158 static int orinoco_ioctl_getsens(struct net_device *dev,
3159                                  struct iw_request_info *info,
3160                                  struct iw_param *srq,
3161                                  char *extra)
3162 {
3163         struct orinoco_private *priv = netdev_priv(dev);
3164         hermes_t *hw = &priv->hw;
3165         u16 val;
3166         int err;
3167         unsigned long flags;
3168
3169         if (!priv->has_sensitivity)
3170                 return -EOPNOTSUPP;
3171
3172         if (orinoco_lock(priv, &flags) != 0)
3173                 return -EBUSY;
3174         err = hermes_read_wordrec(hw, USER_BAP,
3175                                   HERMES_RID_CNFSYSTEMSCALE, &val);
3176         orinoco_unlock(priv, &flags);
3177
3178         if (err)
3179                 return err;
3180
3181         srq->value = val;
3182         srq->fixed = 0; /* auto */
3183
3184         return 0;
3185 }
3186
3187 static int orinoco_ioctl_setsens(struct net_device *dev,
3188                                  struct iw_request_info *info,
3189                                  struct iw_param *srq,
3190                                  char *extra)
3191 {
3192         struct orinoco_private *priv = netdev_priv(dev);
3193         int val = srq->value;
3194         unsigned long flags;
3195
3196         if (!priv->has_sensitivity)
3197                 return -EOPNOTSUPP;
3198
3199         if ((val < 1) || (val > 3))
3200                 return -EINVAL;
3201
3202         if (orinoco_lock(priv, &flags) != 0)
3203                 return -EBUSY;
3204         priv->ap_density = val;
3205         orinoco_unlock(priv, &flags);
3206
3207         return -EINPROGRESS;            /* Call commit handler */
3208 }
3209
3210 static int orinoco_ioctl_setrts(struct net_device *dev,
3211                                 struct iw_request_info *info,
3212                                 struct iw_param *rrq,
3213                                 char *extra)
3214 {
3215         struct orinoco_private *priv = netdev_priv(dev);
3216         int val = rrq->value;
3217         unsigned long flags;
3218
3219         if (rrq->disabled)
3220                 val = 2347;
3221
3222         if ( (val < 0) || (val > 2347) )
3223                 return -EINVAL;
3224
3225         if (orinoco_lock(priv, &flags) != 0)
3226                 return -EBUSY;
3227
3228         priv->rts_thresh = val;
3229         orinoco_unlock(priv, &flags);
3230
3231         return -EINPROGRESS;            /* Call commit handler */
3232 }
3233
3234 static int orinoco_ioctl_getrts(struct net_device *dev,
3235                                 struct iw_request_info *info,
3236                                 struct iw_param *rrq,
3237                                 char *extra)
3238 {
3239         struct orinoco_private *priv = netdev_priv(dev);
3240
3241         rrq->value = priv->rts_thresh;
3242         rrq->disabled = (rrq->value == 2347);
3243         rrq->fixed = 1;
3244
3245         return 0;
3246 }
3247
3248 static int orinoco_ioctl_setfrag(struct net_device *dev,
3249                                  struct iw_request_info *info,
3250                                  struct iw_param *frq,
3251                                  char *extra)
3252 {
3253         struct orinoco_private *priv = netdev_priv(dev);
3254         int err = -EINPROGRESS;         /* Call commit handler */
3255         unsigned long flags;
3256
3257         if (orinoco_lock(priv, &flags) != 0)
3258                 return -EBUSY;
3259
3260         if (priv->has_mwo) {
3261                 if (frq->disabled)
3262                         priv->mwo_robust = 0;
3263                 else {
3264                         if (frq->fixed)
3265                                 printk(KERN_WARNING "%s: Fixed fragmentation is "
3266                                        "not supported on this firmware. "
3267                                        "Using MWO robust instead.\n", dev->name);
3268                         priv->mwo_robust = 1;
3269                 }
3270         } else {
3271                 if (frq->disabled)
3272                         priv->frag_thresh = 2346;
3273                 else {
3274                         if ( (frq->value < 256) || (frq->value > 2346) )
3275                                 err = -EINVAL;
3276                         else
3277                                 priv->frag_thresh = frq->value & ~0x1; /* must be even */
3278                 }
3279         }
3280
3281         orinoco_unlock(priv, &flags);
3282
3283         return err;
3284 }
3285
3286 static int orinoco_ioctl_getfrag(struct net_device *dev,
3287                                  struct iw_request_info *info,
3288                                  struct iw_param *frq,
3289                                  char *extra)
3290 {
3291         struct orinoco_private *priv = netdev_priv(dev);
3292         hermes_t *hw = &priv->hw;
3293         int err;
3294         u16 val;
3295         unsigned long flags;
3296
3297         if (orinoco_lock(priv, &flags) != 0)
3298                 return -EBUSY;
3299
3300         if (priv->has_mwo) {
3301                 err = hermes_read_wordrec(hw, USER_BAP,
3302                                           HERMES_RID_CNFMWOROBUST_AGERE,
3303                                           &val);
3304                 if (err)
3305                         val = 0;
3306
3307                 frq->value = val ? 2347 : 0;
3308                 frq->disabled = ! val;
3309                 frq->fixed = 0;
3310         } else {
3311                 err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_CNFFRAGMENTATIONTHRESHOLD,
3312                                           &val);
3313                 if (err)
3314                         val = 0;
3315
3316                 frq->value = val;
3317                 frq->disabled = (val >= 2346);
3318                 frq->fixed = 1;
3319         }
3320
3321         orinoco_unlock(priv, &flags);
3322
3323         return err;
3324 }
3325
3326 static int orinoco_ioctl_setrate(struct net_device *dev,
3327                                  struct iw_request_info *info,
3328                                  struct iw_param *rrq,
3329                                  char *extra)
3330 {
3331         struct orinoco_private *priv = netdev_priv(dev);
3332         int ratemode = -1;
3333         int bitrate; /* 100s of kilobits */
3334         int i;
3335         unsigned long flags;
3336
3337         /* As the user space doesn't know our highest rate, it uses -1
3338          * to ask us to set the highest rate.  Test it using "iwconfig
3339          * ethX rate auto" - Jean II */
3340         if (rrq->value == -1)
3341                 bitrate = 110;
3342         else {
3343                 if (rrq->value % 100000)
3344                         return -EINVAL;
3345                 bitrate = rrq->value / 100000;
3346         }
3347
3348         if ( (bitrate != 10) && (bitrate != 20) &&
3349              (bitrate != 55) && (bitrate != 110) )
3350                 return -EINVAL;
3351
3352         for (i = 0; i < BITRATE_TABLE_SIZE; i++)
3353                 if ( (bitrate_table[i].bitrate == bitrate) &&
3354                      (bitrate_table[i].automatic == ! rrq->fixed) ) {
3355                         ratemode = i;
3356                         break;
3357                 }
3358
3359         if (ratemode == -1)
3360                 return -EINVAL;
3361
3362         if (orinoco_lock(priv, &flags) != 0)
3363                 return -EBUSY;
3364         priv->bitratemode = ratemode;
3365         orinoco_unlock(priv, &flags);
3366
3367         return -EINPROGRESS;
3368 }
3369
3370 static int orinoco_ioctl_getrate(struct net_device *dev,
3371                                  struct iw_request_info *info,
3372                                  struct iw_param *rrq,
3373                                  char *extra)
3374 {
3375         struct orinoco_private *priv = netdev_priv(dev);
3376         hermes_t *hw = &priv->hw;
3377         int err = 0;
3378         int ratemode;
3379         int i;
3380         u16 val;
3381         unsigned long flags;
3382
3383         if (orinoco_lock(priv, &flags) != 0)
3384                 return -EBUSY;
3385
3386         ratemode = priv->bitratemode;
3387
3388         BUG_ON((ratemode < 0) || (ratemode >= BITRATE_TABLE_SIZE));
3389
3390         rrq->value = bitrate_table[ratemode].bitrate * 100000;
3391         rrq->fixed = ! bitrate_table[ratemode].automatic;
3392         rrq->disabled = 0;
3393
3394         /* If the interface is running we try to find more about the
3395            current mode */
3396         if (netif_running(dev)) {
3397                 err = hermes_read_wordrec(hw, USER_BAP,
3398                                           HERMES_RID_CURRENTTXRATE, &val);
3399                 if (err)
3400                         goto out;
3401
3402                 switch (priv->firmware_type) {
3403                 case FIRMWARE_TYPE_AGERE: /* Lucent style rate */
3404                         /* Note : in Lucent firmware, the return value of
3405                          * HERMES_RID_CURRENTTXRATE is the bitrate in Mb/s,
3406                          * and therefore is totally different from the
3407                          * encoding of HERMES_RID_CNFTXRATECONTROL.
3408                          * Don't forget that 6Mb/s is really 5.5Mb/s */
3409                         if (val == 6)
3410                                 rrq->value = 5500000;
3411                         else
3412                                 rrq->value = val * 1000000;
3413                         break;
3414                 case FIRMWARE_TYPE_INTERSIL: /* Intersil style rate */
3415                 case FIRMWARE_TYPE_SYMBOL: /* Symbol style rate */
3416                         for (i = 0; i < BITRATE_TABLE_SIZE; i++)
3417                                 if (bitrate_table[i].intersil_txratectrl == val) {
3418                                         ratemode = i;
3419                                         break;
3420                                 }
3421                         if (i >= BITRATE_TABLE_SIZE)
3422                                 printk(KERN_INFO "%s: Unable to determine current bitrate (0x%04hx)\n",
3423                                        dev->name, val);
3424
3425                         rrq->value = bitrate_table[ratemode].bitrate * 100000;
3426                         break;
3427                 default:
3428                         BUG();
3429                 }
3430         }
3431
3432  out:
3433         orinoco_unlock(priv, &flags);
3434
3435         return err;
3436 }
3437
3438 static int orinoco_ioctl_setpower(struct net_device *dev,
3439                                   struct iw_request_info *info,
3440                                   struct iw_param *prq,
3441                                   char *extra)
3442 {
3443         struct orinoco_private *priv = netdev_priv(dev);
3444         int err = -EINPROGRESS;         /* Call commit handler */
3445         unsigned long flags;
3446
3447         if (orinoco_lock(priv, &flags) != 0)
3448                 return -EBUSY;
3449
3450         if (prq->disabled) {
3451                 priv->pm_on = 0;
3452         } else {
3453                 switch (prq->flags & IW_POWER_MODE) {
3454                 case IW_POWER_UNICAST_R:
3455                         priv->pm_mcast = 0;
3456                         priv->pm_on = 1;
3457                         break;
3458                 case IW_POWER_ALL_R:
3459                         priv->pm_mcast = 1;
3460                         priv->pm_on = 1;
3461                         break;
3462                 case IW_POWER_ON:
3463                         /* No flags : but we may have a value - Jean II */
3464                         break;
3465                 default:
3466                         err = -EINVAL;
3467                         goto out;
3468                 }
3469
3470                 if (prq->flags & IW_POWER_TIMEOUT) {
3471                         priv->pm_on = 1;
3472                         priv->pm_timeout = prq->value / 1000;
3473                 }
3474                 if (prq->flags & IW_POWER_PERIOD) {
3475                         priv->pm_on = 1;
3476                         priv->pm_period = prq->value / 1000;
3477                 }
3478                 /* It's valid to not have a value if we are just toggling
3479                  * the flags... Jean II */
3480                 if(!priv->pm_on) {
3481                         err = -EINVAL;
3482                         goto out;
3483                 }
3484         }
3485
3486  out:
3487         orinoco_unlock(priv, &flags);
3488
3489         return err;
3490 }
3491
3492 static int orinoco_ioctl_getpower(struct net_device *dev,
3493                                   struct iw_request_info *info,
3494                                   struct iw_param *prq,
3495                                   char *extra)
3496 {
3497         struct orinoco_private *priv = netdev_priv(dev);
3498         hermes_t *hw = &priv->hw;
3499         int err = 0;
3500         u16 enable, period, timeout, mcast;
3501         unsigned long flags;
3502
3503         if (orinoco_lock(priv, &flags) != 0)
3504                 return -EBUSY;
3505
3506         err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_CNFPMENABLED, &enable);
3507         if (err)
3508                 goto out;
3509
3510         err = hermes_read_wordrec(hw, USER_BAP,
3511                                   HERMES_RID_CNFMAXSLEEPDURATION, &period);
3512         if (err)
3513                 goto out;
3514
3515         err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_CNFPMHOLDOVERDURATION, &timeout);
3516         if (err)
3517                 goto out;
3518
3519         err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_CNFMULTICASTRECEIVE, &mcast);
3520         if (err)
3521                 goto out;
3522
3523         prq->disabled = !enable;
3524         /* Note : by default, display the period */
3525         if ((prq->flags & IW_POWER_TYPE) == IW_POWER_TIMEOUT) {
3526                 prq->flags = IW_POWER_TIMEOUT;
3527                 prq->value = timeout * 1000;
3528         } else {
3529                 prq->flags = IW_POWER_PERIOD;
3530                 prq->value = period * 1000;
3531         }
3532         if (mcast)
3533                 prq->flags |= IW_POWER_ALL_R;
3534         else
3535                 prq->flags |= IW_POWER_UNICAST_R;
3536
3537  out:
3538         orinoco_unlock(priv, &flags);
3539
3540         return err;
3541 }
3542
3543 static int orinoco_ioctl_getretry(struct net_device *dev,
3544                                   struct iw_request_info *info,
3545                                   struct iw_param *rrq,
3546                                   char *extra)
3547 {
3548         struct orinoco_private *priv = netdev_priv(dev);
3549         hermes_t *hw = &priv->hw;
3550         int err = 0;
3551         u16 short_limit, long_limit, lifetime;
3552         unsigned long flags;
3553
3554         if (orinoco_lock(priv, &flags) != 0)
3555                 return -EBUSY;
3556
3557         err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_SHORTRETRYLIMIT,
3558                                   &short_limit);
3559         if (err)
3560                 goto out;
3561
3562         err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_LONGRETRYLIMIT,
3563                                   &long_limit);
3564         if (err)
3565                 goto out;
3566
3567         err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_MAXTRANSMITLIFETIME,
3568                                   &lifetime);
3569         if (err)
3570                 goto out;
3571
3572         rrq->disabled = 0;              /* Can't be disabled */
3573
3574         /* Note : by default, display the retry number */
3575         if ((rrq->flags & IW_RETRY_TYPE) == IW_RETRY_LIFETIME) {
3576                 rrq->flags = IW_RETRY_LIFETIME;
3577                 rrq->value = lifetime * 1000;   /* ??? */
3578         } else {
3579                 /* By default, display the min number */
3580                 if ((rrq->flags & IW_RETRY_LONG)) {
3581                         rrq->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
3582                         rrq->value = long_limit;
3583                 } else {
3584                         rrq->flags = IW_RETRY_LIMIT;
3585                         rrq->value = short_limit;
3586                         if(short_limit != long_limit)
3587                                 rrq->flags |= IW_RETRY_SHORT;
3588                 }
3589         }
3590
3591  out:
3592         orinoco_unlock(priv, &flags);
3593
3594         return err;
3595 }
3596
3597 static int orinoco_ioctl_reset(struct net_device *dev,
3598                                struct iw_request_info *info,
3599                                void *wrqu,
3600                                char *extra)
3601 {
3602         struct orinoco_private *priv = netdev_priv(dev);
3603
3604         if (! capable(CAP_NET_ADMIN))
3605                 return -EPERM;
3606
3607         if (info->cmd == (SIOCIWFIRSTPRIV + 0x1)) {
3608                 printk(KERN_DEBUG "%s: Forcing reset!\n", dev->name);
3609
3610                 /* Firmware reset */
3611                 orinoco_reset(dev);
3612         } else {
3613                 printk(KERN_DEBUG "%s: Force scheduling reset!\n", dev->name);
3614
3615                 schedule_work(&priv->reset_work);
3616         }
3617
3618         return 0;
3619 }
3620
3621 static int orinoco_ioctl_setibssport(struct net_device *dev,
3622                                      struct iw_request_info *info,
3623                                      void *wrqu,
3624                                      char *extra)
3625
3626 {
3627         struct orinoco_private *priv = netdev_priv(dev);
3628         int val = *( (int *) extra );
3629         unsigned long flags;
3630
3631         if (orinoco_lock(priv, &flags) != 0)
3632                 return -EBUSY;
3633
3634         priv->ibss_port = val ;
3635
3636         /* Actually update the mode we are using */
3637         set_port_type(priv);
3638
3639         orinoco_unlock(priv, &flags);
3640         return -EINPROGRESS;            /* Call commit handler */
3641 }
3642
3643 static int orinoco_ioctl_getibssport(struct net_device *dev,
3644                                      struct iw_request_info *info,
3645                                      void *wrqu,
3646                                      char *extra)
3647 {
3648         struct orinoco_private *priv = netdev_priv(dev);
3649         int *val = (int *) extra;
3650
3651         *val = priv->ibss_port;
3652         return 0;
3653 }
3654
3655 static int orinoco_ioctl_setport3(struct net_device *dev,
3656                                   struct iw_request_info *info,
3657                                   void *wrqu,
3658                                   char *extra)
3659 {
3660         struct orinoco_private *priv = netdev_priv(dev);
3661         int val = *( (int *) extra );
3662         int err = 0;
3663         unsigned long flags;
3664
3665         if (orinoco_lock(priv, &flags) != 0)
3666                 return -EBUSY;
3667
3668         switch (val) {
3669         case 0: /* Try to do IEEE ad-hoc mode */
3670                 if (! priv->has_ibss) {
3671                         err = -EINVAL;
3672                         break;
3673                 }
3674                 priv->prefer_port3 = 0;
3675
3676                 break;
3677
3678         case 1: /* Try to do Lucent proprietary ad-hoc mode */
3679                 if (! priv->has_port3) {
3680                         err = -EINVAL;
3681                         break;
3682                 }
3683                 priv->prefer_port3 = 1;
3684                 break;
3685
3686         default:
3687                 err = -EINVAL;
3688         }
3689
3690         if (! err) {
3691                 /* Actually update the mode we are using */
3692                 set_port_type(priv);
3693                 err = -EINPROGRESS;
3694         }
3695
3696         orinoco_unlock(priv, &flags);
3697
3698         return err;
3699 }
3700
3701 static int orinoco_ioctl_getport3(struct net_device *dev,
3702                                   struct iw_request_info *info,
3703                                   void *wrqu,
3704                                   char *extra)
3705 {
3706         struct orinoco_private *priv = netdev_priv(dev);
3707         int *val = (int *) extra;
3708
3709         *val = priv->prefer_port3;
3710         return 0;
3711 }
3712
3713 static int orinoco_ioctl_setpreamble(struct net_device *dev,
3714                                      struct iw_request_info *info,
3715                                      void *wrqu,
3716                                      char *extra)
3717 {
3718         struct orinoco_private *priv = netdev_priv(dev);
3719         unsigned long flags;
3720         int val;
3721
3722         if (! priv->has_preamble)
3723                 return -EOPNOTSUPP;
3724
3725         /* 802.11b has recently defined some short preamble.
3726          * Basically, the Phy header has been reduced in size.
3727          * This increase performance, especially at high rates
3728          * (the preamble is transmitted at 1Mb/s), unfortunately
3729          * this give compatibility troubles... - Jean II */
3730         val = *( (int *) extra );
3731
3732         if (orinoco_lock(priv, &flags) != 0)
3733                 return -EBUSY;
3734
3735         if (val)
3736                 priv->preamble = 1;
3737         else
3738                 priv->preamble = 0;
3739
3740         orinoco_unlock(priv, &flags);
3741
3742         return -EINPROGRESS;            /* Call commit handler */
3743 }
3744
3745 static int orinoco_ioctl_getpreamble(struct net_device *dev,
3746                                      struct iw_request_info *info,
3747                                      void *wrqu,
3748                                      char *extra)
3749 {
3750         struct orinoco_private *priv = netdev_priv(dev);
3751         int *val = (int *) extra;
3752
3753         if (! priv->has_preamble)
3754                 return -EOPNOTSUPP;
3755
3756         *val = priv->preamble;
3757         return 0;
3758 }
3759
3760 /* ioctl interface to hermes_read_ltv()
3761  * To use with iwpriv, pass the RID as the token argument, e.g.
3762  * iwpriv get_rid [0xfc00]
3763  * At least Wireless Tools 25 is required to use iwpriv.
3764  * For Wireless Tools 25 and 26 append "dummy" are the end. */
3765 static int orinoco_ioctl_getrid(struct net_device *dev,
3766                                 struct iw_request_info *info,
3767                                 struct iw_point *data,
3768                                 char *extra)
3769 {
3770         struct orinoco_private *priv = netdev_priv(dev);
3771         hermes_t *hw = &priv->hw;
3772         int rid = data->flags;
3773         u16 length;
3774         int err;
3775         unsigned long flags;
3776
3777         /* It's a "get" function, but we don't want users to access the
3778          * WEP key and other raw firmware data */
3779         if (! capable(CAP_NET_ADMIN))
3780                 return -EPERM;
3781
3782         if (rid < 0xfc00 || rid > 0xffff)
3783                 return -EINVAL;
3784
3785         if (orinoco_lock(priv, &flags) != 0)
3786                 return -EBUSY;
3787
3788         err = hermes_read_ltv(hw, USER_BAP, rid, MAX_RID_LEN, &length,
3789                               extra);
3790         if (err)
3791                 goto out;
3792
3793         data->length = min_t(u16, HERMES_RECLEN_TO_BYTES(length),
3794                              MAX_RID_LEN);
3795
3796  out:
3797         orinoco_unlock(priv, &flags);
3798         return err;
3799 }
3800
3801 /* Trigger a scan (look for other cells in the vicinity */
3802 static int orinoco_ioctl_setscan(struct net_device *dev,
3803                                  struct iw_request_info *info,
3804                                  struct iw_param *srq,
3805                                  char *extra)
3806 {
3807         struct orinoco_private *priv = netdev_priv(dev);
3808         hermes_t *hw = &priv->hw;
3809         int err = 0;
3810         unsigned long flags;
3811
3812         /* Note : you may have realised that, as this is a SET operation,
3813          * this is privileged and therefore a normal user can't
3814          * perform scanning.
3815          * This is not an error, while the device perform scanning,
3816          * traffic doesn't flow, so it's a perfect DoS...
3817          * Jean II */
3818
3819         if (orinoco_lock(priv, &flags) != 0)
3820                 return -EBUSY;
3821
3822         /* Scanning with port 0 disabled would fail */
3823         if (!netif_running(dev)) {
3824                 err = -ENETDOWN;
3825                 goto out;
3826         }
3827
3828         /* In monitor mode, the scan results are always empty.
3829          * Probe responses are passed to the driver as received
3830          * frames and could be processed in software. */
3831         if (priv->iw_mode == IW_MODE_MONITOR) {
3832                 err = -EOPNOTSUPP;
3833                 goto out;
3834         }
3835
3836         /* Note : because we don't lock out the irq handler, the way
3837          * we access scan variables in priv is critical.
3838          *      o scan_inprogress : not touched by irq handler
3839          *      o scan_mode : not touched by irq handler
3840          *      o scan_result : irq is strict producer, non-irq is strict
3841          *              consumer.
3842          *      o scan_len : synchronised with scan_result
3843          * Before modifying anything on those variables, please think hard !
3844          * Jean II */
3845
3846         /* If there is still some left-over scan results, get rid of it */
3847         if (priv->scan_result != NULL) {
3848                 /* What's likely is that a client did crash or was killed
3849                  * between triggering the scan request and reading the
3850                  * results, so we need to reset everything.
3851                  * Some clients that are too slow may suffer from that...
3852                  * Jean II */
3853                 kfree(priv->scan_result);
3854                 priv->scan_result = NULL;
3855         }
3856
3857         /* Save flags */
3858         priv->scan_mode = srq->flags;
3859
3860         /* Always trigger scanning, even if it's in progress.
3861          * This way, if the info frame get lost, we will recover somewhat
3862          * gracefully  - Jean II */
3863
3864         if (priv->has_hostscan) {
3865                 switch (priv->firmware_type) {
3866                 case FIRMWARE_TYPE_SYMBOL:
3867                         err = hermes_write_wordrec(hw, USER_BAP,
3868                                                    HERMES_RID_CNFHOSTSCAN_SYMBOL,
3869                                                    HERMES_HOSTSCAN_SYMBOL_ONCE |
3870                                                    HERMES_HOSTSCAN_SYMBOL_BCAST);
3871                         break;
3872                 case FIRMWARE_TYPE_INTERSIL: {
3873                         __le16 req[3];
3874
3875                         req[0] = cpu_to_le16(0x3fff);   /* All channels */
3876                         req[1] = cpu_to_le16(0x0001);   /* rate 1 Mbps */
3877                         req[2] = 0;                     /* Any ESSID */
3878                         err = HERMES_WRITE_RECORD(hw, USER_BAP,
3879                                                   HERMES_RID_CNFHOSTSCAN, &req);
3880                 }
3881                 break;
3882                 case FIRMWARE_TYPE_AGERE:
3883                         err = hermes_write_wordrec(hw, USER_BAP,
3884                                                    HERMES_RID_CNFSCANSSID_AGERE,
3885                                                    0);  /* Any ESSID */
3886                         if (err)
3887                                 break;
3888
3889                         err = hermes_inquire(hw, HERMES_INQ_SCAN);
3890                         break;
3891                 }
3892         } else
3893                 err = hermes_inquire(hw, HERMES_INQ_SCAN);
3894
3895         /* One more client */
3896         if (! err)
3897                 priv->scan_inprogress = 1;
3898
3899  out:
3900         orinoco_unlock(priv, &flags);
3901         return err;
3902 }
3903
3904 /* Translate scan data returned from the card to a card independant
3905  * format that the Wireless Tools will understand - Jean II
3906  * Return message length or -errno for fatal errors */
3907 static inline int orinoco_translate_scan(struct net_device *dev,
3908                                          char *buffer,
3909                                          char *scan,
3910                                          int scan_len)
3911 {
3912         struct orinoco_private *priv = netdev_priv(dev);
3913         int                     offset;         /* In the scan data */
3914         union hermes_scan_info *atom;
3915         int                     atom_len;
3916         u16                     capabilities;
3917         u16                     channel;
3918         struct iw_event         iwe;            /* Temporary buffer */
3919         char *                  current_ev = buffer;
3920         char *                  end_buf = buffer + IW_SCAN_MAX_DATA;
3921
3922         switch (priv->firmware_type) {
3923         case FIRMWARE_TYPE_AGERE:
3924                 atom_len = sizeof(struct agere_scan_apinfo);
3925                 offset = 0;
3926                 break;
3927         case FIRMWARE_TYPE_SYMBOL:
3928                 /* Lack of documentation necessitates this hack.
3929                  * Different firmwares have 68 or 76 byte long atoms.
3930                  * We try modulo first.  If the length divides by both,
3931                  * we check what would be the channel in the second
3932                  * frame for a 68-byte atom.  76-byte atoms have 0 there.
3933                  * Valid channel cannot be 0.  */
3934                 if (scan_len % 76)
3935                         atom_len = 68;
3936                 else if (scan_len % 68)
3937                         atom_len = 76;
3938                 else if (scan_len >= 1292 && scan[68] == 0)
3939                         atom_len = 76;
3940                 else
3941                         atom_len = 68;
3942                 offset = 0;
3943                 break;
3944         case FIRMWARE_TYPE_INTERSIL:
3945                 offset = 4;
3946                 if (priv->has_hostscan) {
3947                         atom_len = le16_to_cpup((__le16 *)scan);
3948                         /* Sanity check for atom_len */
3949                         if (atom_len < sizeof(struct prism2_scan_apinfo)) {
3950                                 printk(KERN_ERR "%s: Invalid atom_len in scan data: %d\n",
3951                                 dev->name, atom_len);
3952                                 return -EIO;
3953                         }
3954                 } else
3955                         atom_len = offsetof(struct prism2_scan_apinfo, atim);
3956                 break;
3957         default:
3958                 return -EOPNOTSUPP;
3959         }
3960
3961         /* Check that we got an whole number of atoms */
3962         if ((scan_len - offset) % atom_len) {
3963                 printk(KERN_ERR "%s: Unexpected scan data length %d, "
3964                        "atom_len %d, offset %d\n", dev->name, scan_len,
3965                        atom_len, offset);
3966                 return -EIO;
3967         }
3968
3969         /* Read the entries one by one */
3970         for (; offset + atom_len <= scan_len; offset += atom_len) {
3971                 /* Get next atom */
3972                 atom = (union hermes_scan_info *) (scan + offset);
3973
3974                 /* First entry *MUST* be the AP MAC address */
3975                 iwe.cmd = SIOCGIWAP;
3976                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
3977                 memcpy(iwe.u.ap_addr.sa_data, atom->a.bssid, ETH_ALEN);
3978                 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_ADDR_LEN);
3979
3980                 /* Other entries will be displayed in the order we give them */
3981
3982                 /* Add the ESSID */
3983                 iwe.u.data.length = le16_to_cpu(atom->a.essid_len);
3984                 if (iwe.u.data.length > 32)
3985                         iwe.u.data.length = 32;
3986                 iwe.cmd = SIOCGIWESSID;
3987                 iwe.u.data.flags = 1;
3988                 current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, atom->a.essid);
3989
3990                 /* Add mode */
3991                 iwe.cmd = SIOCGIWMODE;
3992                 capabilities = le16_to_cpu(atom->a.capabilities);
3993                 if (capabilities & 0x3) {
3994                         if (capabilities & 0x1)
3995                                 iwe.u.mode = IW_MODE_MASTER;
3996                         else
3997                                 iwe.u.mode = IW_MODE_ADHOC;
3998                         current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_UINT_LEN);
3999                 }
4000
4001                 channel = atom->s.channel;
4002                 if ( (channel >= 1) && (channel <= NUM_CHANNELS) ) {
4003                         /* Add frequency */
4004                         iwe.cmd = SIOCGIWFREQ;
4005                         iwe.u.freq.m = channel_frequency[channel-1] * 100000;
4006                         iwe.u.freq.e = 1;
4007                         current_ev = iwe_stream_add_event(current_ev, end_buf,
4008                                                           &iwe, IW_EV_FREQ_LEN);
4009                 }
4010
4011                 /* Add quality statistics */
4012                 iwe.cmd = IWEVQUAL;
4013                 iwe.u.qual.updated = 0x10;      /* no link quality */
4014                 iwe.u.qual.level = (__u8) le16_to_cpu(atom->a.level) - 0x95;
4015                 iwe.u.qual.noise = (__u8) le16_to_cpu(atom->a.noise) - 0x95;
4016                 /* Wireless tools prior to 27.pre22 will show link quality
4017                  * anyway, so we provide a reasonable value. */
4018                 if (iwe.u.qual.level > iwe.u.qual.noise)
4019                         iwe.u.qual.qual = iwe.u.qual.level - iwe.u.qual.noise;
4020                 else
4021                         iwe.u.qual.qual = 0;
4022                 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_QUAL_LEN);
4023
4024                 /* Add encryption capability */
4025                 iwe.cmd = SIOCGIWENCODE;
4026                 if (capabilities & 0x10)
4027                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
4028                 else
4029                         iwe.u.data.flags = IW_ENCODE_DISABLED;
4030                 iwe.u.data.length = 0;
4031                 current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, atom->a.essid);
4032
4033                 /* Bit rate is not available in Lucent/Agere firmwares */
4034                 if (priv->firmware_type != FIRMWARE_TYPE_AGERE) {
4035                         char *  current_val = current_ev + IW_EV_LCP_LEN;
4036                         int     i;
4037                         int     step;
4038
4039                         if (priv->firmware_type == FIRMWARE_TYPE_SYMBOL)
4040                                 step = 2;
4041                         else
4042                                 step = 1;
4043
4044                         iwe.cmd = SIOCGIWRATE;
4045                         /* Those two flags are ignored... */
4046                         iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
4047                         /* Max 10 values */
4048                         for (i = 0; i < 10; i += step) {
4049                                 /* NULL terminated */
4050                                 if (atom->p.rates[i] == 0x0)
4051                                         break;
4052                                 /* Bit rate given in 500 kb/s units (+ 0x80) */
4053                                 iwe.u.bitrate.value = ((atom->p.rates[i] & 0x7f) * 500000);
4054                                 current_val = iwe_stream_add_value(current_ev, current_val,
4055                                                                    end_buf, &iwe,
4056                                                                    IW_EV_PARAM_LEN);
4057                         }
4058                         /* Check if we added any event */
4059                         if ((current_val - current_ev) > IW_EV_LCP_LEN)
4060                                 current_ev = current_val;
4061                 }
4062
4063                 /* The other data in the scan result are not really
4064                  * interesting, so for now drop it - Jean II */
4065         }
4066         return current_ev - buffer;
4067 }
4068
4069 /* Return results of a scan */
4070 static int orinoco_ioctl_getscan(struct net_device *dev,
4071                                  struct iw_request_info *info,
4072                                  struct iw_point *srq,
4073                                  char *extra)
4074 {
4075         struct orinoco_private *priv = netdev_priv(dev);
4076         int err = 0;
4077         unsigned long flags;
4078
4079         if (orinoco_lock(priv, &flags) != 0)
4080                 return -EBUSY;
4081
4082         /* If no results yet, ask to try again later */
4083         if (priv->scan_result == NULL) {
4084                 if (priv->scan_inprogress)
4085                         /* Important note : we don't want to block the caller
4086                          * until results are ready for various reasons.
4087                          * First, managing wait queues is complex and racy.
4088                          * Second, we grab some rtnetlink lock before comming
4089                          * here (in dev_ioctl()).
4090                          * Third, we generate an Wireless Event, so the
4091                          * caller can wait itself on that - Jean II */
4092                         err = -EAGAIN;
4093                 else
4094                         /* Client error, no scan results...
4095                          * The caller need to restart the scan. */
4096                         err = -ENODATA;
4097         } else {
4098                 /* We have some results to push back to user space */
4099
4100                 /* Translate to WE format */
4101                 int ret = orinoco_translate_scan(dev, extra,
4102                                                  priv->scan_result,
4103                                                  priv->scan_len);
4104
4105                 if (ret < 0) {
4106                         err = ret;
4107                         kfree(priv->scan_result);
4108                         priv->scan_result = NULL;
4109                 } else {
4110                         srq->length = ret;
4111
4112                         /* Return flags */
4113                         srq->flags = (__u16) priv->scan_mode;
4114
4115                         /* In any case, Scan results will be cleaned up in the
4116                          * reset function and when exiting the driver.
4117                          * The person triggering the scanning may never come to
4118                          * pick the results, so we need to do it in those places.
4119                          * Jean II */
4120
4121 #ifdef SCAN_SINGLE_READ
4122                         /* If you enable this option, only one client (the first
4123                          * one) will be able to read the result (and only one
4124                          * time). If there is multiple concurent clients that
4125                          * want to read scan results, this behavior is not
4126                          * advisable - Jean II */
4127                         kfree(priv->scan_result);
4128                         priv->scan_result = NULL;
4129 #endif /* SCAN_SINGLE_READ */
4130                         /* Here, if too much time has elapsed since last scan,
4131                          * we may want to clean up scan results... - Jean II */
4132                 }
4133
4134                 /* Scan is no longer in progress */
4135                 priv->scan_inprogress = 0;
4136         }
4137
4138         orinoco_unlock(priv, &flags);
4139         return err;
4140 }
4141
4142 /* Commit handler, called after set operations */
4143 static int orinoco_ioctl_commit(struct net_device *dev,
4144                                 struct iw_request_info *info,
4145                                 void *wrqu,
4146                                 char *extra)
4147 {
4148         struct orinoco_private *priv = netdev_priv(dev);
4149         struct hermes *hw = &priv->hw;
4150         unsigned long flags;
4151         int err = 0;
4152
4153         if (!priv->open)
4154                 return 0;
4155
4156         if (priv->broken_disableport) {
4157                 orinoco_reset(dev);
4158                 return 0;
4159         }
4160
4161         if (orinoco_lock(priv, &flags) != 0)
4162                 return err;
4163
4164         err = hermes_disable_port(hw, 0);
4165         if (err) {
4166                 printk(KERN_WARNING "%s: Unable to disable port "
4167                        "while reconfiguring card\n", dev->name);
4168                 priv->broken_disableport = 1;
4169                 goto out;
4170         }
4171
4172         err = __orinoco_program_rids(dev);
4173         if (err) {
4174                 printk(KERN_WARNING "%s: Unable to reconfigure card\n",
4175                        dev->name);
4176                 goto out;
4177         }
4178
4179         err = hermes_enable_port(hw, 0);
4180         if (err) {
4181                 printk(KERN_WARNING "%s: Unable to enable port while reconfiguring card\n",
4182                        dev->name);
4183                 goto out;
4184         }
4185
4186  out:
4187         if (err) {
4188                 printk(KERN_WARNING "%s: Resetting instead...\n", dev->name);
4189                 schedule_work(&priv->reset_work);
4190                 err = 0;
4191         }
4192
4193         orinoco_unlock(priv, &flags);
4194         return err;
4195 }
4196
4197 static const struct iw_priv_args orinoco_privtab[] = {
4198         { SIOCIWFIRSTPRIV + 0x0, 0, 0, "force_reset" },
4199         { SIOCIWFIRSTPRIV + 0x1, 0, 0, "card_reset" },
4200         { SIOCIWFIRSTPRIV + 0x2, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
4201           0, "set_port3" },
4202         { SIOCIWFIRSTPRIV + 0x3, 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
4203           "get_port3" },
4204         { SIOCIWFIRSTPRIV + 0x4, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
4205           0, "set_preamble" },
4206         { SIOCIWFIRSTPRIV + 0x5, 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
4207           "get_preamble" },
4208         { SIOCIWFIRSTPRIV + 0x6, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
4209           0, "set_ibssport" },
4210         { SIOCIWFIRSTPRIV + 0x7, 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
4211           "get_ibssport" },
4212         { SIOCIWFIRSTPRIV + 0x9, 0, IW_PRIV_TYPE_BYTE | MAX_RID_LEN,
4213           "get_rid" },
4214 };
4215
4216
4217 /*
4218  * Structures to export the Wireless Handlers
4219  */
4220
4221 static const iw_handler orinoco_handler[] = {
4222         [SIOCSIWCOMMIT-SIOCIWFIRST] = (iw_handler) orinoco_ioctl_commit,
4223         [SIOCGIWNAME  -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getname,
4224         [SIOCSIWFREQ  -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_setfreq,
4225         [SIOCGIWFREQ  -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getfreq,
4226         [SIOCSIWMODE  -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_setmode,
4227         [SIOCGIWMODE  -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getmode,
4228         [SIOCSIWSENS  -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_setsens,
4229         [SIOCGIWSENS  -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getsens,
4230         [SIOCGIWRANGE -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getiwrange,
4231         [SIOCSIWSPY   -SIOCIWFIRST] = (iw_handler) iw_handler_set_spy,
4232         [SIOCGIWSPY   -SIOCIWFIRST] = (iw_handler) iw_handler_get_spy,
4233         [SIOCSIWTHRSPY-SIOCIWFIRST] = (iw_handler) iw_handler_set_thrspy,
4234         [SIOCGIWTHRSPY-SIOCIWFIRST] = (iw_handler) iw_handler_get_thrspy,
4235         [SIOCSIWAP    -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_setwap,
4236         [SIOCGIWAP    -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getwap,
4237         [SIOCSIWSCAN  -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_setscan,
4238         [SIOCGIWSCAN  -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getscan,
4239         [SIOCSIWESSID -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_setessid,
4240         [SIOCGIWESSID -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getessid,
4241         [SIOCSIWNICKN -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_setnick,
4242         [SIOCGIWNICKN -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getnick,
4243         [SIOCSIWRATE  -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_setrate,
4244         [SIOCGIWRATE  -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getrate,
4245         [SIOCSIWRTS   -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_setrts,
4246         [SIOCGIWRTS   -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getrts,
4247         [SIOCSIWFRAG  -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_setfrag,
4248         [SIOCGIWFRAG  -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getfrag,
4249         [SIOCGIWRETRY -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getretry,
4250         [SIOCSIWENCODE-SIOCIWFIRST] = (iw_handler) orinoco_ioctl_setiwencode,
4251         [SIOCGIWENCODE-SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getiwencode,
4252         [SIOCSIWPOWER -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_setpower,
4253         [SIOCGIWPOWER -SIOCIWFIRST] = (iw_handler) orinoco_ioctl_getpower,
4254 };
4255
4256
4257 /*
4258   Added typecasting since we no longer use iwreq_data -- Moustafa
4259  */
4260 static const iw_handler orinoco_private_handler[] = {
4261         [0] = (iw_handler) orinoco_ioctl_reset,
4262         [1] = (iw_handler) orinoco_ioctl_reset,
4263         [2] = (iw_handler) orinoco_ioctl_setport3,
4264         [3] = (iw_handler) orinoco_ioctl_getport3,
4265         [4] = (iw_handler) orinoco_ioctl_setpreamble,
4266         [5] = (iw_handler) orinoco_ioctl_getpreamble,
4267         [6] = (iw_handler) orinoco_ioctl_setibssport,
4268         [7] = (iw_handler) orinoco_ioctl_getibssport,
4269         [9] = (iw_handler) orinoco_ioctl_getrid,
4270 };
4271
4272 static const struct iw_handler_def orinoco_handler_def = {
4273         .num_standard = ARRAY_SIZE(orinoco_handler),
4274         .num_private = ARRAY_SIZE(orinoco_private_handler),
4275         .num_private_args = ARRAY_SIZE(orinoco_privtab),
4276         .standard = orinoco_handler,
4277         .private = orinoco_private_handler,
4278         .private_args = orinoco_privtab,
4279         .get_wireless_stats = orinoco_get_wireless_stats,
4280 };
4281
4282 static void orinoco_get_drvinfo(struct net_device *dev,
4283                                 struct ethtool_drvinfo *info)
4284 {
4285         struct orinoco_private *priv = netdev_priv(dev);
4286
4287         strncpy(info->driver, DRIVER_NAME, sizeof(info->driver) - 1);
4288         strncpy(info->version, DRIVER_VERSION, sizeof(info->version) - 1);
4289         strncpy(info->fw_version, priv->fw_name, sizeof(info->fw_version) - 1);
4290         if (dev->class_dev.dev)
4291                 strncpy(info->bus_info, dev->class_dev.dev->bus_id,
4292                         sizeof(info->bus_info) - 1);
4293         else
4294                 snprintf(info->bus_info, sizeof(info->bus_info) - 1,
4295                          "PCMCIA %p", priv->hw.iobase);
4296 }
4297
4298 static const struct ethtool_ops orinoco_ethtool_ops = {
4299         .get_drvinfo = orinoco_get_drvinfo,
4300         .get_link = ethtool_op_get_link,
4301 };
4302
4303 /********************************************************************/
4304 /* Module initialization                                            */
4305 /********************************************************************/
4306
4307 EXPORT_SYMBOL(alloc_orinocodev);
4308 EXPORT_SYMBOL(free_orinocodev);
4309
4310 EXPORT_SYMBOL(__orinoco_up);
4311 EXPORT_SYMBOL(__orinoco_down);
4312 EXPORT_SYMBOL(orinoco_reinit_firmware);
4313
4314 EXPORT_SYMBOL(orinoco_interrupt);
4315
4316 /* Can't be declared "const" or the whole __initdata section will
4317  * become const */
4318 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
4319         " (David Gibson <hermes@gibson.dropbear.id.au>, "
4320         "Pavel Roskin <proski@gnu.org>, et al)";
4321
4322 static int __init init_orinoco(void)
4323 {
4324         printk(KERN_DEBUG "%s\n", version);
4325         return 0;
4326 }
4327
4328 static void __exit exit_orinoco(void)
4329 {
4330 }
4331
4332 module_init(init_orinoco);
4333 module_exit(exit_orinoco);