Update compat-wireless to 2.6.36-5-spn

chromeos/compat-wireless/drivers/net/wireless/orinoco/main.c

+/* main.c - (formerly known as dldwd_cs.c, orinoco_cs.c and orinoco.c)
+ *
+ * A driver for Hermes or Prism 2 chipset based PCMCIA wireless
+ * adaptors, with Lucent/Agere, Intersil or Symbol firmware.
+ *
+ * Current maintainers (as of 29 September 2003) are:
+ *      Pavel Roskin <proski AT gnu.org>
+ * and  David Gibson <hermes AT gibson.dropbear.id.au>
+ *
+ * (C) Copyright David Gibson, IBM Corporation 2001-2003.
+ * Copyright (C) 2000 David Gibson, Linuxcare Australia.
+ *      With some help from :
+ * Copyright (C) 2001 Jean Tourrilhes, HP Labs
+ * Copyright (C) 2001 Benjamin Herrenschmidt
+ *
+ * Based on dummy_cs.c 1.27 2000/06/12 21:27:25
+ *
+ * Portions based on wvlan_cs.c 1.0.6, Copyright Andreas Neuhaus <andy
+ * AT fasta.fh-dortmund.de>
+ *      http://www.stud.fh-dortmund.de/~andy/wvlan/
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License
+ * at http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds AT users.sourceforge.net>.  Portions created by David
+ * A. Hinds are Copyright (C) 1999 David A. Hinds.  All Rights
+ * Reserved.
+ *
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU General Public License version 2 (the "GPL"), in
+ * which case the provisions of the GPL are applicable instead of the
+ * above.  If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the MPL, indicate your decision by
+ * deleting the provisions above and replace them with the notice and
+ * other provisions required by the GPL.  If you do not delete the
+ * provisions above, a recipient may use your version of this file
+ * under either the MPL or the GPL.  */
+
+/*
+ * TODO
+ *      o Handle de-encapsulation within network layer, provide 802.11
+ *        headers (patch from Thomas 'Dent' Mirlacher)
+ *      o Fix possible races in SPY handling.
+ *      o Disconnect wireless extensions from fundamental configuration.
+ *      o (maybe) Software WEP support (patch from Stano Meduna).
+ *      o (maybe) Use multiple Tx buffers - driver handling queue
+ *        rather than firmware.
+ */
+
+/* Locking and synchronization:
+ *
+ * The basic principle is that everything is serialized through a
+ * single spinlock, priv->lock.  The lock is used in user, bh and irq
+ * context, so when taken outside hardirq context it should always be
+ * taken with interrupts disabled.  The lock protects both the
+ * hardware and the struct orinoco_private.
+ *
+ * Another flag, priv->hw_unavailable indicates that the hardware is
+ * unavailable for an extended period of time (e.g. suspended, or in
+ * the middle of a hard reset).  This flag is protected by the
+ * spinlock.  All code which touches the hardware should check the
+ * flag after taking the lock, and if it is set, give up on whatever
+ * they are doing and drop the lock again.  The orinoco_lock()
+ * function handles this (it unlocks and returns -EBUSY if
+ * hw_unavailable is non-zero).
+ */
+
+#define DRIVER_NAME "orinoco"
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/suspend.h>
+#include <linux/if_arp.h>
+#include <linux/wireless.h>
+#include <linux/ieee80211.h>
+#include <net/iw_handler.h>
+#include <net/cfg80211.h>
+
+#include "hermes_rid.h"
+#include "hermes_dld.h"
+#include "hw.h"
+#include "scan.h"
+#include "mic.h"
+#include "fw.h"
+#include "wext.h"
+#include "cfg.h"
+#include "main.h"
+
+#include "orinoco.h"
+
+/********************************************************************/
+/* Module information                                               */
+/********************************************************************/
+
+MODULE_AUTHOR("Pavel Roskin <proski@gnu.org> & "
+              "David Gibson <hermes@gibson.dropbear.id.au>");
+MODULE_DESCRIPTION("Driver for Lucent Orinoco, Prism II based "
+                   "and similar wireless cards");
+MODULE_LICENSE("Dual MPL/GPL");
+
+/* Level of debugging. Used in the macros in orinoco.h */
+#ifdef ORINOCO_DEBUG
+int orinoco_debug = ORINOCO_DEBUG;
+EXPORT_SYMBOL(orinoco_debug);
+module_param(orinoco_debug, int, 0644);
+MODULE_PARM_DESC(orinoco_debug, "Debug level");
+#endif
+
+static int suppress_linkstatus; /* = 0 */
+module_param(suppress_linkstatus, bool, 0644);
+MODULE_PARM_DESC(suppress_linkstatus, "Don't log link status changes");
+
+static int ignore_disconnect; /* = 0 */
+module_param(ignore_disconnect, int, 0644);
+MODULE_PARM_DESC(ignore_disconnect,
+                 "Don't report lost link to the network layer");
+
+int force_monitor; /* = 0 */
+module_param(force_monitor, int, 0644);
+MODULE_PARM_DESC(force_monitor, "Allow monitor mode for all firmware versions");
+
+/********************************************************************/
+/* Internal constants                                               */
+/********************************************************************/
+
+/* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */
+static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
+#define ENCAPS_OVERHEAD         (sizeof(encaps_hdr) + 2)
+
+#define ORINOCO_MIN_MTU         256
+#define ORINOCO_MAX_MTU         (IEEE80211_MAX_DATA_LEN - ENCAPS_OVERHEAD)
+
+#define MAX_IRQLOOPS_PER_IRQ    10
+#define MAX_IRQLOOPS_PER_JIFFY  (20000/HZ) /* Based on a guestimate of
+                                            * how many events the
+                                            * device could
+                                            * legitimately generate */
+
+#define DUMMY_FID               0xFFFF
+
+/*#define MAX_MULTICAST(priv)   (priv->firmware_type == FIRMWARE_TYPE_AGERE ? \
+  HERMES_MAX_MULTICAST : 0)*/
+#define MAX_MULTICAST(priv)     (HERMES_MAX_MULTICAST)
+
+#define ORINOCO_INTEN           (HERMES_EV_RX | HERMES_EV_ALLOC \
+                                 | HERMES_EV_TX | HERMES_EV_TXEXC \
+                                 | HERMES_EV_WTERR | HERMES_EV_INFO \
+                                 | HERMES_EV_INFDROP)
+
+/********************************************************************/
+/* Data types                                                       */
+/********************************************************************/
+
+/* Beginning of the Tx descriptor, used in TxExc handling */
+struct hermes_txexc_data {
+        struct hermes_tx_descriptor desc;
+        __le16 frame_ctl;
+        __le16 duration_id;
+        u8 addr1[ETH_ALEN];
+} __packed;
+
+/* Rx frame header except compatibility 802.3 header */
+struct hermes_rx_descriptor {
+        /* Control */
+        __le16 status;
+        __le32 time;
+        u8 silence;
+        u8 signal;
+        u8 rate;
+        u8 rxflow;
+        __le32 reserved;
+
+        /* 802.11 header */
+        __le16 frame_ctl;
+        __le16 duration_id;
+        u8 addr1[ETH_ALEN];
+        u8 addr2[ETH_ALEN];
+        u8 addr3[ETH_ALEN];
+        __le16 seq_ctl;
+        u8 addr4[ETH_ALEN];
+
+        /* Data length */
+        __le16 data_len;
+} __packed;
+
+struct orinoco_rx_data {
+        struct hermes_rx_descriptor *desc;
+        struct sk_buff *skb;
+        struct list_head list;
+};
+
+struct orinoco_scan_data {
+        void *buf;
+        size_t len;
+        int type;
+        struct list_head list;
+};
+
+/********************************************************************/
+/* Function prototypes                                              */
+/********************************************************************/
+
+static int __orinoco_set_multicast_list(struct net_device *dev);
+static int __orinoco_up(struct orinoco_private *priv);
+static int __orinoco_down(struct orinoco_private *priv);
+static int __orinoco_commit(struct orinoco_private *priv);
+
+/********************************************************************/
+/* Internal helper functions                                        */
+/********************************************************************/
+
+void set_port_type(struct orinoco_private *priv)
+{
+        switch (priv->iw_mode) {
+        case NL80211_IFTYPE_STATION:
+                priv->port_type = 1;
+                priv->createibss = 0;
+                break;
+        case NL80211_IFTYPE_ADHOC:
+                if (priv->prefer_port3) {
+                        priv->port_type = 3;
+                        priv->createibss = 0;
+                } else {
+                        priv->port_type = priv->ibss_port;
+                        priv->createibss = 1;
+                }
+                break;
+        case NL80211_IFTYPE_MONITOR:
+                priv->port_type = 3;
+                priv->createibss = 0;
+                break;
+        default:
+                printk(KERN_ERR "%s: Invalid priv->iw_mode in set_port_type()\n",
+                       priv->ndev->name);
+        }
+}
+
+/********************************************************************/
+/* Device methods                                                   */
+/********************************************************************/
+
+int orinoco_open(struct net_device *dev)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+        unsigned long flags;
+        int err;
+
+        if (orinoco_lock(priv, &flags) != 0)
+                return -EBUSY;
+
+        err = __orinoco_up(priv);
+
+        if (!err)
+                priv->open = 1;
+
+        orinoco_unlock(priv, &flags);
+
+        return err;
+}
+EXPORT_SYMBOL(orinoco_open);
+
+int orinoco_stop(struct net_device *dev)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+        int err = 0;
+
+        /* We mustn't use orinoco_lock() here, because we need to be
+           able to close the interface even if hw_unavailable is set
+           (e.g. as we're released after a PC Card removal) */
+        orinoco_lock_irq(priv);
+
+        priv->open = 0;
+
+        err = __orinoco_down(priv);
+
+        orinoco_unlock_irq(priv);
+
+        return err;
+}
+EXPORT_SYMBOL(orinoco_stop);
+
+struct net_device_stats *orinoco_get_stats(struct net_device *dev)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+
+        return &priv->stats;
+}
+EXPORT_SYMBOL(orinoco_get_stats);
+
+void orinoco_set_multicast_list(struct net_device *dev)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+        unsigned long flags;
+
+        if (orinoco_lock(priv, &flags) != 0) {
+                printk(KERN_DEBUG "%s: orinoco_set_multicast_list() "
+                       "called when hw_unavailable\n", dev->name);
+                return;
+        }
+
+        __orinoco_set_multicast_list(dev);
+        orinoco_unlock(priv, &flags);
+}
+EXPORT_SYMBOL(orinoco_set_multicast_list);
+
+int orinoco_change_mtu(struct net_device *dev, int new_mtu)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+
+        if ((new_mtu < ORINOCO_MIN_MTU) || (new_mtu > ORINOCO_MAX_MTU))
+                return -EINVAL;
+
+        /* MTU + encapsulation + header length */
+        if ((new_mtu + ENCAPS_OVERHEAD + sizeof(struct ieee80211_hdr)) >
+             (priv->nicbuf_size - ETH_HLEN))
+                return -EINVAL;
+
+        dev->mtu = new_mtu;
+
+        return 0;
+}
+EXPORT_SYMBOL(orinoco_change_mtu);
+
+/********************************************************************/
+/* Tx path                                                          */
+/********************************************************************/
+
+/* Add encapsulation and MIC to the existing SKB.
+ * The main xmit routine will then send the whole lot to the card.
+ * Need 8 bytes headroom
+ * Need 8 bytes tailroom
+ *
+ *                          With encapsulated ethernet II frame
+ *                          --------
+ *                          803.3 header (14 bytes)
+ *                           dst[6]
+ * --------                  src[6]
+ * 803.3 header (14 bytes)   len[2]
+ *  dst[6]                  803.2 header (8 bytes)
+ *  src[6]                   encaps[6]
+ *  len[2] <- leave alone -> len[2]
+ * --------                 -------- <-- 0
+ * Payload                  Payload
+ * ...                      ...
+ *
+ * --------                 --------
+ *                          MIC (8 bytes)
+ *                          --------
+ *
+ * returns 0 on success, -ENOMEM on error.
+ */
+int orinoco_process_xmit_skb(struct sk_buff *skb,
+                             struct net_device *dev,
+                             struct orinoco_private *priv,
+                             int *tx_control,
+                             u8 *mic_buf)
+{
+        struct orinoco_tkip_key *key;
+        struct ethhdr *eh;
+        int do_mic;
+
+        key = (struct orinoco_tkip_key *) priv->keys[priv->tx_key].key;
+
+        do_mic = ((priv->encode_alg == ORINOCO_ALG_TKIP) &&
+                  (key != NULL));
+
+        if (do_mic)
+                *tx_control |= (priv->tx_key << HERMES_MIC_KEY_ID_SHIFT) |
+                        HERMES_TXCTRL_MIC;
+
+        eh = (struct ethhdr *)skb->data;
+
+        /* Encapsulate Ethernet-II frames */
+        if (ntohs(eh->h_proto) > ETH_DATA_LEN) { /* Ethernet-II frame */
+                struct header_struct {
+                        struct ethhdr eth;      /* 802.3 header */
+                        u8 encap[6];            /* 802.2 header */
+                } __packed hdr;
+                int len = skb->len + sizeof(encaps_hdr) - (2 * ETH_ALEN);
+
+                if (skb_headroom(skb) < ENCAPS_OVERHEAD) {
+                        if (net_ratelimit())
+                                printk(KERN_ERR
+                                       "%s: Not enough headroom for 802.2 headers %d\n",
+                                       dev->name, skb_headroom(skb));
+                        return -ENOMEM;
+                }
+
+                /* Fill in new header */
+                memcpy(&hdr.eth, eh, 2 * ETH_ALEN);
+                hdr.eth.h_proto = htons(len);
+                memcpy(hdr.encap, encaps_hdr, sizeof(encaps_hdr));
+
+                /* Make room for the new header, and copy it in */
+                eh = (struct ethhdr *) skb_push(skb, ENCAPS_OVERHEAD);
+                memcpy(eh, &hdr, sizeof(hdr));
+        }
+
+        /* Calculate Michael MIC */
+        if (do_mic) {
+                size_t len = skb->len - ETH_HLEN;
+                u8 *mic = &mic_buf[0];
+
+                /* Have to write to an even address, so copy the spare
+                 * byte across */
+                if (skb->len % 2) {
+                        *mic = skb->data[skb->len - 1];
+                        mic++;
+                }
+
+                orinoco_mic(priv->tx_tfm_mic, key->tx_mic,
+                            eh->h_dest, eh->h_source, 0 /* priority */,
+                            skb->data + ETH_HLEN,
+                            len, mic);
+        }
+
+        return 0;
+}
+EXPORT_SYMBOL(orinoco_process_xmit_skb);
+
+static netdev_tx_t orinoco_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+        struct net_device_stats *stats = &priv->stats;
+        hermes_t *hw = &priv->hw;
+        int err = 0;
+        u16 txfid = priv->txfid;
+        int tx_control;
+        unsigned long flags;
+        u8 mic_buf[MICHAEL_MIC_LEN+1];
+
+        if (!netif_running(dev)) {
+                printk(KERN_ERR "%s: Tx on stopped device!\n",
+                       dev->name);
+                return NETDEV_TX_BUSY;
+        }
+
+        if (netif_queue_stopped(dev)) {
+                printk(KERN_DEBUG "%s: Tx while transmitter busy!\n",
+                       dev->name);
+                return NETDEV_TX_BUSY;
+        }
+
+        if (orinoco_lock(priv, &flags) != 0) {
+                printk(KERN_ERR "%s: orinoco_xmit() called while hw_unavailable\n",
+                       dev->name);
+                return NETDEV_TX_BUSY;
+        }
+
+        if (!netif_carrier_ok(dev) ||
+            (priv->iw_mode == NL80211_IFTYPE_MONITOR)) {
+                /* Oops, the firmware hasn't established a connection,
+                   silently drop the packet (this seems to be the
+                   safest approach). */
+                goto drop;
+        }
+
+        /* Check packet length */
+        if (skb->len < ETH_HLEN)
+                goto drop;
+
+        tx_control = HERMES_TXCTRL_TX_OK | HERMES_TXCTRL_TX_EX;
+
+        err = orinoco_process_xmit_skb(skb, dev, priv, &tx_control,
+                                       &mic_buf[0]);
+        if (err)
+                goto drop;
+
+        if (priv->has_alt_txcntl) {
+                /* WPA enabled firmwares have tx_cntl at the end of
+                 * the 802.11 header.  So write zeroed descriptor and
+                 * 802.11 header at the same time
+                 */
+                char desc[HERMES_802_3_OFFSET];
+                __le16 *txcntl = (__le16 *) &desc[HERMES_TXCNTL2_OFFSET];
+
+                memset(&desc, 0, sizeof(desc));
+
+                *txcntl = cpu_to_le16(tx_control);
+                err = hw->ops->bap_pwrite(hw, USER_BAP, &desc, sizeof(desc),
+                                          txfid, 0);
+                if (err) {
+                        if (net_ratelimit())
+                                printk(KERN_ERR "%s: Error %d writing Tx "
+                                       "descriptor to BAP\n", dev->name, err);
+                        goto busy;
+                }
+        } else {
+                struct hermes_tx_descriptor desc;
+
+                memset(&desc, 0, sizeof(desc));
+
+                desc.tx_control = cpu_to_le16(tx_control);
+                err = hw->ops->bap_pwrite(hw, USER_BAP, &desc, sizeof(desc),
+                                          txfid, 0);
+                if (err) {
+                        if (net_ratelimit())
+                                printk(KERN_ERR "%s: Error %d writing Tx "
+                                       "descriptor to BAP\n", dev->name, err);
+                        goto busy;
+                }
+
+                /* Clear the 802.11 header and data length fields - some
+                 * firmwares (e.g. Lucent/Agere 8.xx) appear to get confused
+                 * if this isn't done. */
+                hermes_clear_words(hw, HERMES_DATA0,
+                                   HERMES_802_3_OFFSET - HERMES_802_11_OFFSET);
+        }
+
+        err = hw->ops->bap_pwrite(hw, USER_BAP, skb->data, skb->len,
+                                  txfid, HERMES_802_3_OFFSET);
+        if (err) {
+                printk(KERN_ERR "%s: Error %d writing packet to BAP\n",
+                       dev->name, err);
+                goto busy;
+        }
+
+        if (tx_control & HERMES_TXCTRL_MIC) {
+                size_t offset = HERMES_802_3_OFFSET + skb->len;
+                size_t len = MICHAEL_MIC_LEN;
+
+                if (offset % 2) {
+                        offset--;
+                        len++;
+                }
+                err = hw->ops->bap_pwrite(hw, USER_BAP, &mic_buf[0], len,
+                                          txfid, offset);
+                if (err) {
+                        printk(KERN_ERR "%s: Error %d writing MIC to BAP\n",
+                               dev->name, err);
+                        goto busy;
+                }
+        }
+
+        /* Finally, we actually initiate the send */
+        netif_stop_queue(dev);
+
+        err = hw->ops->cmd_wait(hw, HERMES_CMD_TX | HERMES_CMD_RECL,
+                                txfid, NULL);
+        if (err) {
+                netif_start_queue(dev);
+                if (net_ratelimit())
+                        printk(KERN_ERR "%s: Error %d transmitting packet\n",
+                                dev->name, err);
+                goto busy;
+        }
+
+        stats->tx_bytes += HERMES_802_3_OFFSET + skb->len;
+        goto ok;
+
+ drop:
+        stats->tx_errors++;
+        stats->tx_dropped++;
+
+ ok:
+        orinoco_unlock(priv, &flags);
+        dev_kfree_skb(skb);
+        return NETDEV_TX_OK;
+
+ busy:
+        if (err == -EIO)
+                schedule_work(&priv->reset_work);
+        orinoco_unlock(priv, &flags);
+        return NETDEV_TX_BUSY;
+}
+
+static void __orinoco_ev_alloc(struct net_device *dev, hermes_t *hw)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+        u16 fid = hermes_read_regn(hw, ALLOCFID);
+
+        if (fid != priv->txfid) {
+                if (fid != DUMMY_FID)
+                        printk(KERN_WARNING "%s: Allocate event on unexpected fid (%04X)\n",
+                               dev->name, fid);
+                return;
+        }
+
+        hermes_write_regn(hw, ALLOCFID, DUMMY_FID);
+}
+
+static void __orinoco_ev_tx(struct net_device *dev, hermes_t *hw)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+        struct net_device_stats *stats = &priv->stats;
+
+        stats->tx_packets++;
+
+        netif_wake_queue(dev);
+
+        hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
+}
+
+static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+        struct net_device_stats *stats = &priv->stats;
+        u16 fid = hermes_read_regn(hw, TXCOMPLFID);
+        u16 status;
+        struct hermes_txexc_data hdr;
+        int err = 0;
+
+        if (fid == DUMMY_FID)
+                return; /* Nothing's really happened */
+
+        /* Read part of the frame header - we need status and addr1 */
+        err = hw->ops->bap_pread(hw, IRQ_BAP, &hdr,
+                                 sizeof(struct hermes_txexc_data),
+                                 fid, 0);
+
+        hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
+        stats->tx_errors++;
+
+        if (err) {
+                printk(KERN_WARNING "%s: Unable to read descriptor on Tx error "
+                       "(FID=%04X error %d)\n",
+                       dev->name, fid, err);
+                return;
+        }
+
+        DEBUG(1, "%s: Tx error, err %d (FID=%04X)\n", dev->name,
+              err, fid);
+
+        /* We produce a TXDROP event only for retry or lifetime
+         * exceeded, because that's the only status that really mean
+         * that this particular node went away.
+         * Other errors means that *we* screwed up. - Jean II */
+        status = le16_to_cpu(hdr.desc.status);
+        if (status & (HERMES_TXSTAT_RETRYERR | HERMES_TXSTAT_AGEDERR)) {
+                union iwreq_data        wrqu;
+
+                /* Copy 802.11 dest address.
+                 * We use the 802.11 header because the frame may
+                 * not be 802.3 or may be mangled...
+                 * In Ad-Hoc mode, it will be the node address.
+                 * In managed mode, it will be most likely the AP addr
+                 * User space will figure out how to convert it to
+                 * whatever it needs (IP address or else).
+                 * - Jean II */
+                memcpy(wrqu.addr.sa_data, hdr.addr1, ETH_ALEN);
+                wrqu.addr.sa_family = ARPHRD_ETHER;
+
+                /* Send event to user space */
+                wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL);
+        }
+
+        netif_wake_queue(dev);
+}
+
+void orinoco_tx_timeout(struct net_device *dev)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+        struct net_device_stats *stats = &priv->stats;
+        struct hermes *hw = &priv->hw;
+
+        printk(KERN_WARNING "%s: Tx timeout! "
+               "ALLOCFID=%04x, TXCOMPLFID=%04x, EVSTAT=%04x\n",
+               dev->name, hermes_read_regn(hw, ALLOCFID),
+               hermes_read_regn(hw, TXCOMPLFID), hermes_read_regn(hw, EVSTAT));
+
+        stats->tx_errors++;
+
+        schedule_work(&priv->reset_work);
+}
+EXPORT_SYMBOL(orinoco_tx_timeout);
+
+/********************************************************************/
+/* Rx path (data frames)                                            */
+/********************************************************************/
+
+/* Does the frame have a SNAP header indicating it should be
+ * de-encapsulated to Ethernet-II? */
+static inline int is_ethersnap(void *_hdr)
+{
+        u8 *hdr = _hdr;
+
+        /* We de-encapsulate all packets which, a) have SNAP headers
+         * (i.e. SSAP=DSAP=0xaa and CTRL=0x3 in the 802.2 LLC header
+         * and where b) the OUI of the SNAP header is 00:00:00 or
+         * 00:00:f8 - we need both because different APs appear to use
+         * different OUIs for some reason */
+        return (memcmp(hdr, &encaps_hdr, 5) == 0)
+                && ((hdr[5] == 0x00) || (hdr[5] == 0xf8));
+}
+
+static inline void orinoco_spy_gather(struct net_device *dev, u_char *mac,
+                                      int level, int noise)
+{
+        struct iw_quality wstats;
+        wstats.level = level - 0x95;
+        wstats.noise = noise - 0x95;
+        wstats.qual = (level > noise) ? (level - noise) : 0;
+        wstats.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
+        /* Update spy records */
+        wireless_spy_update(dev, mac, &wstats);
+}
+
+static void orinoco_stat_gather(struct net_device *dev,
+                                struct sk_buff *skb,
+                                struct hermes_rx_descriptor *desc)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+
+        /* Using spy support with lots of Rx packets, like in an
+         * infrastructure (AP), will really slow down everything, because
+         * the MAC address must be compared to each entry of the spy list.
+         * If the user really asks for it (set some address in the
+         * spy list), we do it, but he will pay the price.
+         * Note that to get here, you need both WIRELESS_SPY
+         * compiled in AND some addresses in the list !!!
+         */
+        /* Note : gcc will optimise the whole section away if
+         * WIRELESS_SPY is not defined... - Jean II */
+        if (SPY_NUMBER(priv)) {
+                orinoco_spy_gather(dev, skb_mac_header(skb) + ETH_ALEN,
+                                   desc->signal, desc->silence);
+        }
+}
+
+/*
+ * orinoco_rx_monitor - handle received monitor frames.
+ *
+ * Arguments:
+ *      dev             network device
+ *      rxfid           received FID
+ *      desc            rx descriptor of the frame
+ *
+ * Call context: interrupt
+ */
+static void orinoco_rx_monitor(struct net_device *dev, u16 rxfid,
+                               struct hermes_rx_descriptor *desc)
+{
+        u32 hdrlen = 30;        /* return full header by default */
+        u32 datalen = 0;
+        u16 fc;
+        int err;
+        int len;
+        struct sk_buff *skb;
+        struct orinoco_private *priv = ndev_priv(dev);
+        struct net_device_stats *stats = &priv->stats;
+        hermes_t *hw = &priv->hw;
+
+        len = le16_to_cpu(desc->data_len);
+
+        /* Determine the size of the header and the data */
+        fc = le16_to_cpu(desc->frame_ctl);
+        switch (fc & IEEE80211_FCTL_FTYPE) {
+        case IEEE80211_FTYPE_DATA:
+                if ((fc & IEEE80211_FCTL_TODS)
+                    && (fc & IEEE80211_FCTL_FROMDS))
+                        hdrlen = 30;
+                else
+                        hdrlen = 24;
+                datalen = len;
+                break;
+        case IEEE80211_FTYPE_MGMT:
+                hdrlen = 24;
+                datalen = len;
+                break;
+        case IEEE80211_FTYPE_CTL:
+                switch (fc & IEEE80211_FCTL_STYPE) {
+                case IEEE80211_STYPE_PSPOLL:
+                case IEEE80211_STYPE_RTS:
+                case IEEE80211_STYPE_CFEND:
+                case IEEE80211_STYPE_CFENDACK:
+                        hdrlen = 16;
+                        break;
+                case IEEE80211_STYPE_CTS:
+                case IEEE80211_STYPE_ACK:
+                        hdrlen = 10;
+                        break;
+                }
+                break;
+        default:
+                /* Unknown frame type */
+                break;
+        }
+
+        /* sanity check the length */
+        if (datalen > IEEE80211_MAX_DATA_LEN + 12) {
+                printk(KERN_DEBUG "%s: oversized monitor frame, "
+                       "data length = %d\n", dev->name, datalen);
+                stats->rx_length_errors++;
+                goto update_stats;
+        }
+
+        skb = dev_alloc_skb(hdrlen + datalen);
+        if (!skb) {
+                printk(KERN_WARNING "%s: Cannot allocate skb for monitor frame\n",
+                       dev->name);
+                goto update_stats;
+        }
+
+        /* Copy the 802.11 header to the skb */
+        memcpy(skb_put(skb, hdrlen), &(desc->frame_ctl), hdrlen);
+        skb_reset_mac_header(skb);
+
+        /* If any, copy the data from the card to the skb */
+        if (datalen > 0) {
+                err = hw->ops->bap_pread(hw, IRQ_BAP, skb_put(skb, datalen),
+                                         ALIGN(datalen, 2), rxfid,
+                                         HERMES_802_2_OFFSET);
+                if (err) {
+                        printk(KERN_ERR "%s: error %d reading monitor frame\n",
+                               dev->name, err);
+                        goto drop;
+                }
+        }
+
+        skb->dev = dev;
+        skb->ip_summed = CHECKSUM_NONE;
+        skb->pkt_type = PACKET_OTHERHOST;
+        skb->protocol = cpu_to_be16(ETH_P_802_2);
+
+        stats->rx_packets++;
+        stats->rx_bytes += skb->len;
+
+        netif_rx(skb);
+        return;
+
+ drop:
+        dev_kfree_skb_irq(skb);
+ update_stats:
+        stats->rx_errors++;
+        stats->rx_dropped++;
+}
+
+void __orinoco_ev_rx(struct net_device *dev, hermes_t *hw)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+        struct net_device_stats *stats = &priv->stats;
+        struct iw_statistics *wstats = &priv->wstats;
+        struct sk_buff *skb = NULL;
+        u16 rxfid, status;
+        int length;
+        struct hermes_rx_descriptor *desc;
+        struct orinoco_rx_data *rx_data;
+        int err;
+
+        desc = kmalloc(sizeof(*desc), GFP_ATOMIC);
+        if (!desc) {
+                printk(KERN_WARNING
+                       "%s: Can't allocate space for RX descriptor\n",
+                       dev->name);
+                goto update_stats;
+        }
+
+        rxfid = hermes_read_regn(hw, RXFID);
+
+        err = hw->ops->bap_pread(hw, IRQ_BAP, desc, sizeof(*desc),
+                                 rxfid, 0);
+        if (err) {
+                printk(KERN_ERR "%s: error %d reading Rx descriptor. "
+                       "Frame dropped.\n", dev->name, err);
+                goto update_stats;
+        }
+
+        status = le16_to_cpu(desc->status);
+
+        if (status & HERMES_RXSTAT_BADCRC) {
+                DEBUG(1, "%s: Bad CRC on Rx. Frame dropped.\n",
+                      dev->name);
+                stats->rx_crc_errors++;
+                goto update_stats;
+        }
+
+        /* Handle frames in monitor mode */
+        if (priv->iw_mode == NL80211_IFTYPE_MONITOR) {
+                orinoco_rx_monitor(dev, rxfid, desc);
+                goto out;
+        }
+
+        if (status & HERMES_RXSTAT_UNDECRYPTABLE) {
+                DEBUG(1, "%s: Undecryptable frame on Rx. Frame dropped.\n",
+                      dev->name);
+                wstats->discard.code++;
+                goto update_stats;
+        }
+
+        length = le16_to_cpu(desc->data_len);
+
+        /* Sanity checks */
+        if (length < 3) { /* No for even an 802.2 LLC header */
+                /* At least on Symbol firmware with PCF we get quite a
+                   lot of these legitimately - Poll frames with no
+                   data. */
+                goto out;
+        }
+        if (length > IEEE80211_MAX_DATA_LEN) {
+                printk(KERN_WARNING "%s: Oversized frame received (%d bytes)\n",
+                       dev->name, length);
+                stats->rx_length_errors++;
+                goto update_stats;
+        }
+
+        /* Payload size does not include Michael MIC. Increase payload
+         * size to read it together with the data. */
+        if (status & HERMES_RXSTAT_MIC)
+                length += MICHAEL_MIC_LEN;
+
+        /* We need space for the packet data itself, plus an ethernet
+           header, plus 2 bytes so we can align the IP header on a
+           32bit boundary, plus 1 byte so we can read in odd length
+           packets from the card, which has an IO granularity of 16
+           bits */
+        skb = dev_alloc_skb(length+ETH_HLEN+2+1);
+        if (!skb) {
+                printk(KERN_WARNING "%s: Can't allocate skb for Rx\n",
+                       dev->name);
+                goto update_stats;
+        }
+
+        /* We'll prepend the header, so reserve space for it.  The worst
+           case is no decapsulation, when 802.3 header is prepended and
+           nothing is removed.  2 is for aligning the IP header.  */
+        skb_reserve(skb, ETH_HLEN + 2);
+
+        err = hw->ops->bap_pread(hw, IRQ_BAP, skb_put(skb, length),
+                                 ALIGN(length, 2), rxfid,
+                                 HERMES_802_2_OFFSET);
+        if (err) {
+                printk(KERN_ERR "%s: error %d reading frame. "
+                       "Frame dropped.\n", dev->name, err);
+                goto drop;
+        }
+
+        /* Add desc and skb to rx queue */
+        rx_data = kzalloc(sizeof(*rx_data), GFP_ATOMIC);
+        if (!rx_data) {
+                printk(KERN_WARNING "%s: Can't allocate RX packet\n",
+                        dev->name);
+                goto drop;
+        }
+        rx_data->desc = desc;
+        rx_data->skb = skb;
+        list_add_tail(&rx_data->list, &priv->rx_list);
+        tasklet_schedule(&priv->rx_tasklet);
+
+        return;
+
+drop:
+        dev_kfree_skb_irq(skb);
+update_stats:
+        stats->rx_errors++;
+        stats->rx_dropped++;
+out:
+        kfree(desc);
+}
+EXPORT_SYMBOL(__orinoco_ev_rx);
+
+static void orinoco_rx(struct net_device *dev,
+                       struct hermes_rx_descriptor *desc,
+                       struct sk_buff *skb)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+        struct net_device_stats *stats = &priv->stats;
+        u16 status, fc;
+        int length;
+        struct ethhdr *hdr;
+
+        status = le16_to_cpu(desc->status);
+        length = le16_to_cpu(desc->data_len);
+        fc = le16_to_cpu(desc->frame_ctl);
+
+        /* Calculate and check MIC */
+        if (status & HERMES_RXSTAT_MIC) {
+                struct orinoco_tkip_key *key;
+                int key_id = ((status & HERMES_RXSTAT_MIC_KEY_ID) >>
+                              HERMES_MIC_KEY_ID_SHIFT);
+                u8 mic[MICHAEL_MIC_LEN];
+                u8 *rxmic;
+                u8 *src = (fc & IEEE80211_FCTL_FROMDS) ?
+                        desc->addr3 : desc->addr2;
+
+                /* Extract Michael MIC from payload */
+                rxmic = skb->data + skb->len - MICHAEL_MIC_LEN;
+
+                skb_trim(skb, skb->len - MICHAEL_MIC_LEN);
+                length -= MICHAEL_MIC_LEN;
+
+                key = (struct orinoco_tkip_key *) priv->keys[key_id].key;
+
+                if (!key) {
+                        printk(KERN_WARNING "%s: Received encrypted frame from "
+                               "%pM using key %i, but key is not installed\n",
+                               dev->name, src, key_id);
+                        goto drop;
+                }
+
+                orinoco_mic(priv->rx_tfm_mic, key->rx_mic, desc->addr1, src,
+                            0, /* priority or QoS? */
+                            skb->data, skb->len, &mic[0]);
+
+                if (memcmp(mic, rxmic,
+                           MICHAEL_MIC_LEN)) {
+                        union iwreq_data wrqu;
+                        struct iw_michaelmicfailure wxmic;
+
+                        printk(KERN_WARNING "%s: "
+                               "Invalid Michael MIC in data frame from %pM, "
+                               "using key %i\n",
+                               dev->name, src, key_id);
+
+                        /* TODO: update stats */
+
+                        /* Notify userspace */
+                        memset(&wxmic, 0, sizeof(wxmic));
+                        wxmic.flags = key_id & IW_MICFAILURE_KEY_ID;
+                        wxmic.flags |= (desc->addr1[0] & 1) ?
+                                IW_MICFAILURE_GROUP : IW_MICFAILURE_PAIRWISE;
+                        wxmic.src_addr.sa_family = ARPHRD_ETHER;
+                        memcpy(wxmic.src_addr.sa_data, src, ETH_ALEN);
+
+                        (void) orinoco_hw_get_tkip_iv(priv, key_id,
+                                                      &wxmic.tsc[0]);
+
+                        memset(&wrqu, 0, sizeof(wrqu));
+                        wrqu.data.length = sizeof(wxmic);
+                        wireless_send_event(dev, IWEVMICHAELMICFAILURE, &wrqu,
+                                            (char *) &wxmic);
+
+                        goto drop;
+                }
+        }
+
+        /* Handle decapsulation
+         * In most cases, the firmware tell us about SNAP frames.
+         * For some reason, the SNAP frames sent by LinkSys APs
+         * are not properly recognised by most firmwares.
+         * So, check ourselves */
+        if (length >= ENCAPS_OVERHEAD &&
+            (((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_1042) ||
+             ((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_TUNNEL) ||
+             is_ethersnap(skb->data))) {
+                /* These indicate a SNAP within 802.2 LLC within
+                   802.11 frame which we'll need to de-encapsulate to
+                   the original EthernetII frame. */
+                hdr = (struct ethhdr *)skb_push(skb,
+                                                ETH_HLEN - ENCAPS_OVERHEAD);
+        } else {
+                /* 802.3 frame - prepend 802.3 header as is */
+                hdr = (struct ethhdr *)skb_push(skb, ETH_HLEN);
+                hdr->h_proto = htons(length);
+        }
+        memcpy(hdr->h_dest, desc->addr1, ETH_ALEN);
+        if (fc & IEEE80211_FCTL_FROMDS)
+                memcpy(hdr->h_source, desc->addr3, ETH_ALEN);
+        else
+                memcpy(hdr->h_source, desc->addr2, ETH_ALEN);
+
+        skb->protocol = eth_type_trans(skb, dev);
+        skb->ip_summed = CHECKSUM_NONE;
+        if (fc & IEEE80211_FCTL_TODS)
+                skb->pkt_type = PACKET_OTHERHOST;
+
+        /* Process the wireless stats if needed */
+        orinoco_stat_gather(dev, skb, desc);
+
+        /* Pass the packet to the networking stack */
+        netif_rx(skb);
+        stats->rx_packets++;
+        stats->rx_bytes += length;
+
+        return;
+
+ drop:
+        dev_kfree_skb(skb);
+        stats->rx_errors++;
+        stats->rx_dropped++;
+}
+
+static void orinoco_rx_isr_tasklet(unsigned long data)
+{
+        struct orinoco_private *priv = (struct orinoco_private *) data;
+        struct net_device *dev = priv->ndev;
+        struct orinoco_rx_data *rx_data, *temp;
+        struct hermes_rx_descriptor *desc;
+        struct sk_buff *skb;
+        unsigned long flags;
+
+        /* orinoco_rx requires the driver lock, and we also need to
+         * protect priv->rx_list, so just hold the lock over the
+         * lot.
+         *
+         * If orinoco_lock fails, we've unplugged the card. In this
+         * case just abort. */
+        if (orinoco_lock(priv, &flags) != 0)
+                return;
+
+        /* extract desc and skb from queue */
+        list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) {
+                desc = rx_data->desc;
+                skb = rx_data->skb;
+                list_del(&rx_data->list);
+                kfree(rx_data);
+
+                orinoco_rx(dev, desc, skb);
+
+                kfree(desc);
+        }
+
+        orinoco_unlock(priv, &flags);
+}
+
+/********************************************************************/
+/* Rx path (info frames)                                            */
+/********************************************************************/
+
+static void print_linkstatus(struct net_device *dev, u16 status)
+{
+        char *s;
+
+        if (suppress_linkstatus)
+                return;
+
+        switch (status) {
+        case HERMES_LINKSTATUS_NOT_CONNECTED:
+                s = "Not Connected";
+                break;
+        case HERMES_LINKSTATUS_CONNECTED:
+                s = "Connected";
+                break;
+        case HERMES_LINKSTATUS_DISCONNECTED:
+                s = "Disconnected";
+                break;
+        case HERMES_LINKSTATUS_AP_CHANGE:
+                s = "AP Changed";
+                break;
+        case HERMES_LINKSTATUS_AP_OUT_OF_RANGE:
+                s = "AP Out of Range";
+                break;
+        case HERMES_LINKSTATUS_AP_IN_RANGE:
+                s = "AP In Range";
+                break;
+        case HERMES_LINKSTATUS_ASSOC_FAILED:
+                s = "Association Failed";
+                break;
+        default:
+                s = "UNKNOWN";
+        }
+
+        printk(KERN_DEBUG "%s: New link status: %s (%04x)\n",
+               dev->name, s, status);
+}
+
+/* Search scan results for requested BSSID, join it if found */
+static void orinoco_join_ap(struct work_struct *work)
+{
+        struct orinoco_private *priv =
+                container_of(work, struct orinoco_private, join_work);
+        struct net_device *dev = priv->ndev;
+        struct hermes *hw = &priv->hw;
+        int err;
+        unsigned long flags;
+        struct join_req {
+                u8 bssid[ETH_ALEN];
+                __le16 channel;
+        } __packed req;
+        const int atom_len = offsetof(struct prism2_scan_apinfo, atim);
+        struct prism2_scan_apinfo *atom = NULL;
+        int offset = 4;
+        int found = 0;
+        u8 *buf;
+        u16 len;
+
+        /* Allocate buffer for scan results */
+        buf = kmalloc(MAX_SCAN_LEN, GFP_KERNEL);
+        if (!buf)
+                return;
+
+        if (orinoco_lock(priv, &flags) != 0)
+                goto fail_lock;
+
+        /* Sanity checks in case user changed something in the meantime */
+        if (!priv->bssid_fixed)
+                goto out;
+
+        if (strlen(priv->desired_essid) == 0)
+                goto out;
+
+        /* Read scan results from the firmware */
+        err = hw->ops->read_ltv(hw, USER_BAP,
+                                HERMES_RID_SCANRESULTSTABLE,
+                                MAX_SCAN_LEN, &len, buf);
+        if (err) {
+                printk(KERN_ERR "%s: Cannot read scan results\n",
+                       dev->name);
+                goto out;
+        }
+
+        len = HERMES_RECLEN_TO_BYTES(len);
+
+        /* Go through the scan results looking for the channel of the AP
+         * we were requested to join */
+        for (; offset + atom_len <= len; offset += atom_len) {
+                atom = (struct prism2_scan_apinfo *) (buf + offset);
+                if (memcmp(&atom->bssid, priv->desired_bssid, ETH_ALEN) == 0) {
+                        found = 1;
+                        break;
+                }
+        }
+
+        if (!found) {
+                DEBUG(1, "%s: Requested AP not found in scan results\n",
+                      dev->name);
+                goto out;
+        }
+
+        memcpy(req.bssid, priv->desired_bssid, ETH_ALEN);
+        req.channel = atom->channel;    /* both are little-endian */
+        err = HERMES_WRITE_RECORD(hw, USER_BAP, HERMES_RID_CNFJOINREQUEST,
+                                  &req);
+        if (err)
+                printk(KERN_ERR "%s: Error issuing join request\n", dev->name);
+
+ out:
+        orinoco_unlock(priv, &flags);
+
+ fail_lock:
+        kfree(buf);
+}
+
+/* Send new BSSID to userspace */
+static void orinoco_send_bssid_wevent(struct orinoco_private *priv)
+{
+        struct net_device *dev = priv->ndev;
+        struct hermes *hw = &priv->hw;
+        union iwreq_data wrqu;
+        int err;
+
+        err = hw->ops->read_ltv(hw, USER_BAP, HERMES_RID_CURRENTBSSID,
+                                ETH_ALEN, NULL, wrqu.ap_addr.sa_data);
+        if (err != 0)
+                return;
+
+        wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+
+        /* Send event to user space */
+        wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+}
+
+static void orinoco_send_assocreqie_wevent(struct orinoco_private *priv)
+{
+        struct net_device *dev = priv->ndev;
+        struct hermes *hw = &priv->hw;
+        union iwreq_data wrqu;
+        int err;
+        u8 buf[88];
+        u8 *ie;
+
+        if (!priv->has_wpa)
+                return;
+
+        err = hw->ops->read_ltv(hw, USER_BAP, HERMES_RID_CURRENT_ASSOC_REQ_INFO,
+                                sizeof(buf), NULL, &buf);
+        if (err != 0)
+                return;
+
+        ie = orinoco_get_wpa_ie(buf, sizeof(buf));
+        if (ie) {
+                int rem = sizeof(buf) - (ie - &buf[0]);
+                wrqu.data.length = ie[1] + 2;
+                if (wrqu.data.length > rem)
+                        wrqu.data.length = rem;
+
+                if (wrqu.data.length)
+                        /* Send event to user space */
+                        wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, ie);
+        }
+}
+
+static void orinoco_send_assocrespie_wevent(struct orinoco_private *priv)
+{
+        struct net_device *dev = priv->ndev;
+        struct hermes *hw = &priv->hw;
+        union iwreq_data wrqu;
+        int err;
+        u8 buf[88]; /* TODO: verify max size or IW_GENERIC_IE_MAX */
+        u8 *ie;
+
+        if (!priv->has_wpa)
+                return;
+
+        err = hw->ops->read_ltv(hw, USER_BAP,
+                                HERMES_RID_CURRENT_ASSOC_RESP_INFO,
+                                sizeof(buf), NULL, &buf);
+        if (err != 0)
+                return;
+
+        ie = orinoco_get_wpa_ie(buf, sizeof(buf));
+        if (ie) {
+                int rem = sizeof(buf) - (ie - &buf[0]);
+                wrqu.data.length = ie[1] + 2;
+                if (wrqu.data.length > rem)
+                        wrqu.data.length = rem;
+
+                if (wrqu.data.length)
+                        /* Send event to user space */
+                        wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, ie);
+        }
+}
+
+static void orinoco_send_wevents(struct work_struct *work)
+{
+        struct orinoco_private *priv =
+                container_of(work, struct orinoco_private, wevent_work);
+        unsigned long flags;
+
+        if (orinoco_lock(priv, &flags) != 0)
+                return;
+
+        orinoco_send_assocreqie_wevent(priv);
+        orinoco_send_assocrespie_wevent(priv);
+        orinoco_send_bssid_wevent(priv);
+
+        orinoco_unlock(priv, &flags);
+}
+
+static void qbuf_scan(struct orinoco_private *priv, void *buf,
+                      int len, int type)
+{
+        struct orinoco_scan_data *sd;
+        unsigned long flags;
+
+        sd = kmalloc(sizeof(*sd), GFP_ATOMIC);
+        sd->buf = buf;
+        sd->len = len;
+        sd->type = type;
+
+        spin_lock_irqsave(&priv->scan_lock, flags);
+        list_add_tail(&sd->list, &priv->scan_list);
+        spin_unlock_irqrestore(&priv->scan_lock, flags);
+
+        schedule_work(&priv->process_scan);
+}
+
+static void qabort_scan(struct orinoco_private *priv)
+{
+        struct orinoco_scan_data *sd;
+        unsigned long flags;
+
+        sd = kmalloc(sizeof(*sd), GFP_ATOMIC);
+        sd->len = -1; /* Abort */
+
+        spin_lock_irqsave(&priv->scan_lock, flags);
+        list_add_tail(&sd->list, &priv->scan_list);
+        spin_unlock_irqrestore(&priv->scan_lock, flags);
+
+        schedule_work(&priv->process_scan);
+}
+
+static void orinoco_process_scan_results(struct work_struct *work)
+{
+        struct orinoco_private *priv =
+                container_of(work, struct orinoco_private, process_scan);
+        struct orinoco_scan_data *sd, *temp;
+        unsigned long flags;
+        void *buf;
+        int len;
+        int type;
+
+        spin_lock_irqsave(&priv->scan_lock, flags);
+        list_for_each_entry_safe(sd, temp, &priv->scan_list, list) {
+                spin_unlock_irqrestore(&priv->scan_lock, flags);
+
+                buf = sd->buf;
+                len = sd->len;
+                type = sd->type;
+
+                list_del(&sd->list);
+                kfree(sd);
+
+                if (len > 0) {
+                        if (type == HERMES_INQ_CHANNELINFO)
+                                orinoco_add_extscan_result(priv, buf, len);
+                        else
+                                orinoco_add_hostscan_results(priv, buf, len);
+
+                        kfree(buf);
+                } else if (priv->scan_request) {
+                        /* Either abort or complete the scan */
+                        cfg80211_scan_done(priv->scan_request, (len < 0));
+                        priv->scan_request = NULL;
+                }
+
+                spin_lock_irqsave(&priv->scan_lock, flags);
+        }
+        spin_unlock_irqrestore(&priv->scan_lock, flags);
+}
+
+void __orinoco_ev_info(struct net_device *dev, hermes_t *hw)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+        u16 infofid;
+        struct {
+                __le16 len;
+                __le16 type;
+        } __packed info;
+        int len, type;
+        int err;
+
+        /* This is an answer to an INQUIRE command that we did earlier,
+         * or an information "event" generated by the card
+         * The controller return to us a pseudo frame containing
+         * the information in question - Jean II */
+        infofid = hermes_read_regn(hw, INFOFID);
+
+        /* Read the info frame header - don't try too hard */
+        err = hw->ops->bap_pread(hw, IRQ_BAP, &info, sizeof(info),
+                                 infofid, 0);
+        if (err) {
+                printk(KERN_ERR "%s: error %d reading info frame. "
+                       "Frame dropped.\n", dev->name, err);
+                return;
+        }
+
+        len = HERMES_RECLEN_TO_BYTES(le16_to_cpu(info.len));
+        type = le16_to_cpu(info.type);
+
+        switch (type) {
+        case HERMES_INQ_TALLIES: {
+                struct hermes_tallies_frame tallies;
+                struct iw_statistics *wstats = &priv->wstats;
+
+                if (len > sizeof(tallies)) {
+                        printk(KERN_WARNING "%s: Tallies frame too long (%d bytes)\n",
+                               dev->name, len);
+                        len = sizeof(tallies);
+                }
+
+                err = hw->ops->bap_pread(hw, IRQ_BAP, &tallies, len,
+                                         infofid, sizeof(info));
+                if (err)
+                        break;
+
+                /* Increment our various counters */
+                /* wstats->discard.nwid - no wrong BSSID stuff */
+                wstats->discard.code +=
+                        le16_to_cpu(tallies.RxWEPUndecryptable);
+                if (len == sizeof(tallies))
+                        wstats->discard.code +=
+                                le16_to_cpu(tallies.RxDiscards_WEPICVError) +
+                                le16_to_cpu(tallies.RxDiscards_WEPExcluded);
+                wstats->discard.misc +=
+                        le16_to_cpu(tallies.TxDiscardsWrongSA);
+                wstats->discard.fragment +=
+                        le16_to_cpu(tallies.RxMsgInBadMsgFragments);
+                wstats->discard.retries +=
+                        le16_to_cpu(tallies.TxRetryLimitExceeded);
+                /* wstats->miss.beacon - no match */
+        }
+        break;
+        case HERMES_INQ_LINKSTATUS: {
+                struct hermes_linkstatus linkstatus;
+                u16 newstatus;
+                int connected;
+
+                if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
+                        break;
+
+                if (len != sizeof(linkstatus)) {
+                        printk(KERN_WARNING "%s: Unexpected size for linkstatus frame (%d bytes)\n",
+                               dev->name, len);
+                        break;
+                }
+
+                err = hw->ops->bap_pread(hw, IRQ_BAP, &linkstatus, len,
+                                         infofid, sizeof(info));
+                if (err)
+                        break;
+                newstatus = le16_to_cpu(linkstatus.linkstatus);
+
+                /* Symbol firmware uses "out of range" to signal that
+                 * the hostscan frame can be requested.  */
+                if (newstatus == HERMES_LINKSTATUS_AP_OUT_OF_RANGE &&
+                    priv->firmware_type == FIRMWARE_TYPE_SYMBOL &&
+                    priv->has_hostscan && priv->scan_request) {
+                        hermes_inquire(hw, HERMES_INQ_HOSTSCAN_SYMBOL);
+                        break;
+                }
+
+                connected = (newstatus == HERMES_LINKSTATUS_CONNECTED)
+                        || (newstatus == HERMES_LINKSTATUS_AP_CHANGE)
+                        || (newstatus == HERMES_LINKSTATUS_AP_IN_RANGE);
+
+                if (connected)
+                        netif_carrier_on(dev);
+                else if (!ignore_disconnect)
+                        netif_carrier_off(dev);
+
+                if (newstatus != priv->last_linkstatus) {
+                        priv->last_linkstatus = newstatus;
+                        print_linkstatus(dev, newstatus);
+                        /* The info frame contains only one word which is the
+                         * status (see hermes.h). The status is pretty boring
+                         * in itself, that's why we export the new BSSID...
+                         * Jean II */
+                        schedule_work(&priv->wevent_work);
+                }
+        }
+        break;
+        case HERMES_INQ_SCAN:
+                if (!priv->scan_request && priv->bssid_fixed &&
+                    priv->firmware_type == FIRMWARE_TYPE_INTERSIL) {
+                        schedule_work(&priv->join_work);
+                        break;
+                }
+                /* fall through */
+        case HERMES_INQ_HOSTSCAN:
+        case HERMES_INQ_HOSTSCAN_SYMBOL: {
+                /* Result of a scanning. Contains information about
+                 * cells in the vicinity - Jean II */
+                unsigned char *buf;
+
+                /* Sanity check */
+                if (len > 4096) {
+                        printk(KERN_WARNING "%s: Scan results too large (%d bytes)\n",
+                               dev->name, len);
+                        qabort_scan(priv);
+                        break;
+                }
+
+                /* Allocate buffer for results */
+                buf = kmalloc(len, GFP_ATOMIC);
+                if (buf == NULL) {
+                        /* No memory, so can't printk()... */
+                        qabort_scan(priv);
+                        break;
+                }
+
+                /* Read scan data */
+                err = hw->ops->bap_pread(hw, IRQ_BAP, (void *) buf, len,
+                                         infofid, sizeof(info));
+                if (err) {
+                        kfree(buf);
+                        qabort_scan(priv);
+                        break;
+                }
+
+#ifdef ORINOCO_DEBUG
+                {
+                        int     i;
+                        printk(KERN_DEBUG "Scan result [%02X", buf[0]);
+                        for (i = 1; i < (len * 2); i++)
+                                printk(":%02X", buf[i]);
+                        printk("]\n");
+                }
+#endif  /* ORINOCO_DEBUG */
+
+                qbuf_scan(priv, buf, len, type);
+        }
+        break;
+        case HERMES_INQ_CHANNELINFO:
+        {
+                struct agere_ext_scan_info *bss;
+
+                if (!priv->scan_request) {
+                        printk(KERN_DEBUG "%s: Got chaninfo without scan, "
+                               "len=%d\n", dev->name, len);
+                        break;
+                }
+
+                /* An empty result indicates that the scan is complete */
+                if (len == 0) {
+                        qbuf_scan(priv, NULL, len, type);
+                        break;
+                }
+
+                /* Sanity check */
+                else if (len < (offsetof(struct agere_ext_scan_info,
+                                           data) + 2)) {
+                        /* Drop this result now so we don't have to
+                         * keep checking later */
+                        printk(KERN_WARNING
+                               "%s: Ext scan results too short (%d bytes)\n",
+                               dev->name, len);
+                        break;
+                }
+
+                bss = kmalloc(len, GFP_ATOMIC);
+                if (bss == NULL)
+                        break;
+
+                /* Read scan data */
+                err = hw->ops->bap_pread(hw, IRQ_BAP, (void *) bss, len,
+                                         infofid, sizeof(info));
+                if (err)
+                        kfree(bss);
+                else
+                        qbuf_scan(priv, bss, len, type);
+
+                break;
+        }
+        case HERMES_INQ_SEC_STAT_AGERE:
+                /* Security status (Agere specific) */
+                /* Ignore this frame for now */
+                if (priv->firmware_type == FIRMWARE_TYPE_AGERE)
+                        break;
+                /* fall through */
+        default:
+                printk(KERN_DEBUG "%s: Unknown information frame received: "
+                       "type 0x%04x, length %d\n", dev->name, type, len);
+                /* We don't actually do anything about it */
+                break;
+        }
+}
+EXPORT_SYMBOL(__orinoco_ev_info);
+
+static void __orinoco_ev_infdrop(struct net_device *dev, hermes_t *hw)
+{
+        if (net_ratelimit())
+                printk(KERN_DEBUG "%s: Information frame lost.\n", dev->name);
+}
+
+/********************************************************************/
+/* Internal hardware control routines                               */
+/********************************************************************/
+
+static int __orinoco_up(struct orinoco_private *priv)
+{
+        struct net_device *dev = priv->ndev;
+        struct hermes *hw = &priv->hw;
+        int err;
+
+        netif_carrier_off(dev); /* just to make sure */
+
+        err = __orinoco_commit(priv);
+        if (err) {
+                printk(KERN_ERR "%s: Error %d configuring card\n",
+                       dev->name, err);
+                return err;
+        }
+
+        /* Fire things up again */
+        hermes_set_irqmask(hw, ORINOCO_INTEN);
+        err = hermes_enable_port(hw, 0);
+        if (err) {
+                printk(KERN_ERR "%s: Error %d enabling MAC port\n",
+                       dev->name, err);
+                return err;
+        }
+
+        netif_start_queue(dev);
+
+        return 0;
+}
+
+static int __orinoco_down(struct orinoco_private *priv)
+{
+        struct net_device *dev = priv->ndev;
+        struct hermes *hw = &priv->hw;
+        int err;
+
+        netif_stop_queue(dev);
+
+        if (!priv->hw_unavailable) {
+                if (!priv->broken_disableport) {
+                        err = hermes_disable_port(hw, 0);
+                        if (err) {
+                                /* Some firmwares (e.g. Intersil 1.3.x) seem
+                                 * to have problems disabling the port, oh
+                                 * well, too bad. */
+                                printk(KERN_WARNING "%s: Error %d disabling MAC port\n",
+                                       dev->name, err);
+                                priv->broken_disableport = 1;
+                        }
+                }
+                hermes_set_irqmask(hw, 0);
+                hermes_write_regn(hw, EVACK, 0xffff);
+        }
+
+        /* firmware will have to reassociate */
+        netif_carrier_off(dev);
+        priv->last_linkstatus = 0xffff;
+
+        return 0;
+}
+
+static int orinoco_reinit_firmware(struct orinoco_private *priv)
+{
+        struct hermes *hw = &priv->hw;
+        int err;
+
+        err = hw->ops->init(hw);
+        if (priv->do_fw_download && !err) {
+                err = orinoco_download(priv);
+                if (err)
+                        priv->do_fw_download = 0;
+        }
+        if (!err)
+                err = orinoco_hw_allocate_fid(priv);
+
+        return err;
+}
+
+static int
+__orinoco_set_multicast_list(struct net_device *dev)
+{
+        struct orinoco_private *priv = ndev_priv(dev);
+        int err = 0;
+        int promisc, mc_count;
+
+        /* The Hermes doesn't seem to have an allmulti mode, so we go
+         * into promiscuous mode and let the upper levels deal. */
+        if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI) ||
+            (netdev_mc_count(dev) > MAX_MULTICAST(priv))) {
+                promisc = 1;
+                mc_count = 0;
+        } else {
+                promisc = 0;
+                mc_count = netdev_mc_count(dev);
+        }
+
+        err = __orinoco_hw_set_multicast_list(priv, dev, mc_count, promisc);
+
+        return err;
+}
+
+/* This must be called from user context, without locks held - use
+ * schedule_work() */
+void orinoco_reset(struct work_struct *work)
+{
+        struct orinoco_private *priv =
+                container_of(work, struct orinoco_private, reset_work);
+        struct net_device *dev = priv->ndev;
+        struct hermes *hw = &priv->hw;
+        int err;
+        unsigned long flags;
+
+        if (orinoco_lock(priv, &flags) != 0)
+                /* When the hardware becomes available again, whatever
+                 * detects that is responsible for re-initializing
+                 * it. So no need for anything further */
+                return;
+
+        netif_stop_queue(dev);
+
+        /* Shut off interrupts.  Depending on what state the hardware
+         * is in, this might not work, but we'll try anyway */
+        hermes_set_irqmask(hw, 0);
+        hermes_write_regn(hw, EVACK, 0xffff);
+
+        priv->hw_unavailable++;
+        priv->last_linkstatus = 0xffff; /* firmware will have to reassociate */
+        netif_carrier_off(dev);
+
+        orinoco_unlock(priv, &flags);
+
+        /* Scanning support: Notify scan cancellation */
+        if (priv->scan_request) {
+                cfg80211_scan_done(priv->scan_request, 1);
+                priv->scan_request = NULL;
+        }
+
+        if (priv->hard_reset) {
+                err = (*priv->hard_reset)(priv);
+                if (err) {
+                        printk(KERN_ERR "%s: orinoco_reset: Error %d "
+                               "performing hard reset\n", dev->name, err);
+                        goto disable;
+                }
+        }
+
+        err = orinoco_reinit_firmware(priv);
+        if (err) {
+                printk(KERN_ERR "%s: orinoco_reset: Error %d re-initializing firmware\n",
+                       dev->name, err);
+                goto disable;
+        }
+
+        /* This has to be called from user context */
+        orinoco_lock_irq(priv);
+
+        priv->hw_unavailable--;
+
+        /* priv->open or priv->hw_unavailable might have changed while
+         * we dropped the lock */
+        if (priv->open && (!priv->hw_unavailable)) {
+                err = __orinoco_up(priv);
+                if (err) {
+                        printk(KERN_ERR "%s: orinoco_reset: Error %d reenabling card\n",
+                               dev->name, err);
+                } else
+                        dev->trans_start = jiffies;
+        }
+
+        orinoco_unlock_irq(priv);
+
+        return;
+ disable:
+        hermes_set_irqmask(hw, 0);
+        netif_device_detach(dev);
+        printk(KERN_ERR "%s: Device has been disabled!\n", dev->name);
+}
+
+static int __orinoco_commit(struct orinoco_private *priv)
+{
+        struct net_device *dev = priv->ndev;
+        int err = 0;
+
+        err = orinoco_hw_program_rids(priv);
+
+        /* FIXME: what about netif_tx_lock */
+        (void) __orinoco_set_multicast_list(dev);
+
+        return err;
+}
+
+/* Ensures configuration changes are applied. May result in a reset.
+ * The caller should hold priv->lock
+ */
+int orinoco_commit(struct orinoco_private *priv)
+{
+        struct net_device *dev = priv->ndev;
+        hermes_t *hw = &priv->hw;
+        int err;
+
+        if (priv->broken_disableport) {
+                schedule_work(&priv->reset_work);
+                return 0;
+        }
+
+        err = hermes_disable_port(hw, 0);
+        if (err) {
+                printk(KERN_WARNING "%s: Unable to disable port "
+                       "while reconfiguring card\n", dev->name);
+                priv->broken_disableport = 1;
+                goto out;
+        }
+
+        err = __orinoco_commit(priv);
+        if (err) {
+                printk(KERN_WARNING "%s: Unable to reconfigure card\n",
+                       dev->name);
+                goto out;
+        }
+
+        err = hermes_enable_port(hw, 0);
+        if (err) {
+                printk(KERN_WARNING "%s: Unable to enable port while reconfiguring card\n",
+                       dev->name);
+                goto out;
+        }
+
+ out:
+        if (err) {
+                printk(KERN_WARNING "%s: Resetting instead...\n", dev->name);
+                schedule_work(&priv->reset_work);
+                err = 0;
+        }
+        return err;
+}
+
+/********************************************************************/
+/* Interrupt handler                                                */
+/********************************************************************/
+
+static void __orinoco_ev_tick(struct net_device *dev, hermes_t *hw)
+{
+        printk(KERN_DEBUG "%s: TICK\n", dev->name);
+}
+
+static void __orinoco_ev_wterr(struct net_device *dev, hermes_t *hw)
+{
+        /* This seems to happen a fair bit under load, but ignoring it
+           seems to work fine...*/
+        printk(KERN_DEBUG "%s: MAC controller error (WTERR). Ignoring.\n",
+               dev->name);
+}
+
+irqreturn_t orinoco_interrupt(int irq, void *dev_id)
+{
+        struct orinoco_private *priv = dev_id;
+        struct net_device *dev = priv->ndev;
+        hermes_t *hw = &priv->hw;
+        int count = MAX_IRQLOOPS_PER_IRQ;
+        u16 evstat, events;
+        /* These are used to detect a runaway interrupt situation.
+         *
+         * If we get more than MAX_IRQLOOPS_PER_JIFFY iterations in a jiffy,
+         * we panic and shut down the hardware
+         */
+        /* jiffies value the last time we were called */
+        static int last_irq_jiffy; /* = 0 */
+        static int loops_this_jiffy; /* = 0 */
+        unsigned long flags;
+
+        if (orinoco_lock(priv, &flags) != 0) {
+                /* If hw is unavailable - we don't know if the irq was
+                 * for us or not */
+                return IRQ_HANDLED;
+        }
+
+        evstat = hermes_read_regn(hw, EVSTAT);
+        events = evstat & hw->inten;
+        if (!events) {
+                orinoco_unlock(priv, &flags);
+                return IRQ_NONE;
+        }
+
+        if (jiffies != last_irq_jiffy)
+                loops_this_jiffy = 0;
+        last_irq_jiffy = jiffies;
+
+        while (events && count--) {
+                if (++loops_this_jiffy > MAX_IRQLOOPS_PER_JIFFY) {
+                        printk(KERN_WARNING "%s: IRQ handler is looping too "
+                               "much! Resetting.\n", dev->name);
+                        /* Disable interrupts for now */
+                        hermes_set_irqmask(hw, 0);
+                        schedule_work(&priv->reset_work);
+                        break;
+                }
+
+                /* Check the card hasn't been removed */
+                if (!hermes_present(hw)) {
+                        DEBUG(0, "orinoco_interrupt(): card removed\n");
+                        break;
+                }
+
+                if (events & HERMES_EV_TICK)
+                        __orinoco_ev_tick(dev, hw);
+                if (events & HERMES_EV_WTERR)
+                        __orinoco_ev_wterr(dev, hw);
+                if (events & HERMES_EV_INFDROP)
+                        __orinoco_ev_infdrop(dev, hw);
+                if (events & HERMES_EV_INFO)
+                        __orinoco_ev_info(dev, hw);
+                if (events & HERMES_EV_RX)
+                        __orinoco_ev_rx(dev, hw);
+                if (events & HERMES_EV_TXEXC)
+                        __orinoco_ev_txexc(dev, hw);
+                if (events & HERMES_EV_TX)
+                        __orinoco_ev_tx(dev, hw);
+                if (events & HERMES_EV_ALLOC)
+                        __orinoco_ev_alloc(dev, hw);
+
+                hermes_write_regn(hw, EVACK, evstat);
+
+                evstat = hermes_read_regn(hw, EVSTAT);
+                events = evstat & hw->inten;
+        };
+
+        orinoco_unlock(priv, &flags);
+        return IRQ_HANDLED;
+}
+EXPORT_SYMBOL(orinoco_interrupt);
+
+/********************************************************************/
+/* Power management                                                 */
+/********************************************************************/
+#if defined(CONFIG_PM_SLEEP) && !defined(CONFIG_HERMES_CACHE_FW_ON_INIT)
+static int orinoco_pm_notifier(struct notifier_block *notifier,
+                               unsigned long pm_event,
+                               void *unused)
+{
+        struct orinoco_private *priv = container_of(notifier,
+                                                    struct orinoco_private,
+                                                    pm_notifier);
+
+        /* All we need to do is cache the firmware before suspend, and
+         * release it when we come out.
+         *
+         * Only need to do this if we're downloading firmware. */
+        if (!priv->do_fw_download)
+                return NOTIFY_DONE;
+
+        switch (pm_event) {
+        case PM_HIBERNATION_PREPARE:
+        case PM_SUSPEND_PREPARE:
+                orinoco_cache_fw(priv, 0);
+                break;
+
+        case PM_POST_RESTORE:
+                /* Restore from hibernation failed. We need to clean
+                 * up in exactly the same way, so fall through. */
+        case PM_POST_HIBERNATION:
+        case PM_POST_SUSPEND:
+                orinoco_uncache_fw(priv);
+                break;
+
+        case PM_RESTORE_PREPARE:
+        default:
+                break;
+        }
+
+        return NOTIFY_DONE;
+}
+
+static void orinoco_register_pm_notifier(struct orinoco_private *priv)
+{
+        priv->pm_notifier.notifier_call = orinoco_pm_notifier;
+        register_pm_notifier(&priv->pm_notifier);
+}
+
+static void orinoco_unregister_pm_notifier(struct orinoco_private *priv)
+{
+        unregister_pm_notifier(&priv->pm_notifier);
+}
+#else /* !PM_SLEEP || HERMES_CACHE_FW_ON_INIT */
+#define orinoco_register_pm_notifier(priv) do { } while(0)
+#define orinoco_unregister_pm_notifier(priv) do { } while(0)
+#endif
+
+/********************************************************************/
+/* Initialization                                                   */
+/********************************************************************/
+
+int orinoco_init(struct orinoco_private *priv)
+{
+        struct device *dev = priv->dev;
+        struct wiphy *wiphy = priv_to_wiphy(priv);
+        hermes_t *hw = &priv->hw;
+        int err = 0;
+
+        /* No need to lock, the hw_unavailable flag is already set in
+         * alloc_orinocodev() */
+        priv->nicbuf_size = IEEE80211_MAX_FRAME_LEN + ETH_HLEN;
+
+        /* Initialize the firmware */
+        err = hw->ops->init(hw);
+        if (err != 0) {
+                dev_err(dev, "Failed to initialize firmware (err = %d)\n",
+                        err);
+                goto out;
+        }
+
+        err = determine_fw_capabilities(priv, wiphy->fw_version,
+                                        sizeof(wiphy->fw_version),
+                                        &wiphy->hw_version);
+        if (err != 0) {
+                dev_err(dev, "Incompatible firmware, aborting\n");
+                goto out;
+        }
+
+        if (priv->do_fw_download) {
+#ifdef CONFIG_HERMES_CACHE_FW_ON_INIT
+                orinoco_cache_fw(priv, 0);
+#endif
+
+                err = orinoco_download(priv);
+                if (err)
+                        priv->do_fw_download = 0;
+
+                /* Check firmware version again */
+                err = determine_fw_capabilities(priv, wiphy->fw_version,
+                                                sizeof(wiphy->fw_version),
+                                                &wiphy->hw_version);
+                if (err != 0) {
+                        dev_err(dev, "Incompatible firmware, aborting\n");
+                        goto out;
+                }
+        }
+
+        if (priv->has_port3)
+                dev_info(dev, "Ad-hoc demo mode supported\n");
+        if (priv->has_ibss)
+                dev_info(dev, "IEEE standard IBSS ad-hoc mode supported\n");
+        if (priv->has_wep)
+                dev_info(dev, "WEP supported, %s-bit key\n",
+                         priv->has_big_wep ? "104" : "40");
+        if (priv->has_wpa) {
+                dev_info(dev, "WPA-PSK supported\n");
+                if (orinoco_mic_init(priv)) {
+                        dev_err(dev, "Failed to setup MIC crypto algorithm. "
+                                "Disabling WPA support\n");
+                        priv->has_wpa = 0;
+                }
+        }
+
+        err = orinoco_hw_read_card_settings(priv, wiphy->perm_addr);
+        if (err)
+                goto out;
+
+        err = orinoco_hw_allocate_fid(priv);
+        if (err) {
+                dev_err(dev, "Failed to allocate NIC buffer!\n");
+                goto out;
+        }
+
+        /* Set up the default configuration */
+        priv->iw_mode = NL80211_IFTYPE_STATION;
+        /* By default use IEEE/IBSS ad-hoc mode if we have it */
+        priv->prefer_port3 = priv->has_port3 && (!priv->has_ibss);
+        set_port_type(priv);
+        priv->channel = 0; /* use firmware default */
+
+        priv->promiscuous = 0;
+        priv->encode_alg = ORINOCO_ALG_NONE;
+        priv->tx_key = 0;
+        priv->wpa_enabled = 0;
+        priv->tkip_cm_active = 0;
+        priv->key_mgmt = 0;
+        priv->wpa_ie_len = 0;
+        priv->wpa_ie = NULL;
+
+        if (orinoco_wiphy_register(wiphy)) {
+                err = -ENODEV;
+                goto out;
+        }
+
+        /* Make the hardware available, as long as it hasn't been
+         * removed elsewhere (e.g. by PCMCIA hot unplug) */
+        orinoco_lock_irq(priv);
+        priv->hw_unavailable--;
+        orinoco_unlock_irq(priv);
+
+        dev_dbg(dev, "Ready\n");
+
+ out:
+        return err;
+}
+EXPORT_SYMBOL(orinoco_init);
+
+static const struct net_device_ops orinoco_netdev_ops = {
+        .ndo_open               = orinoco_open,
+        .ndo_stop               = orinoco_stop,
+        .ndo_start_xmit         = orinoco_xmit,
+        .ndo_set_multicast_list = orinoco_set_multicast_list,
+        .ndo_change_mtu         = orinoco_change_mtu,
+        .ndo_set_mac_address    = eth_mac_addr,
+        .ndo_validate_addr      = eth_validate_addr,
+        .ndo_tx_timeout         = orinoco_tx_timeout,
+        .ndo_get_stats          = orinoco_get_stats,
+};
+
+/* Allocate private data.
+ *
+ * This driver has a number of structures associated with it
+ *  netdev - Net device structure for each network interface
+ *  wiphy - structure associated with wireless phy
+ *  wireless_dev (wdev) - structure for each wireless interface
+ *  hw - structure for hermes chip info
+ *  card - card specific structure for use by the card driver
+ *         (airport, orinoco_cs)
+ *  priv - orinoco private data
+ *  device - generic linux device structure
+ *
+ *  +---------+    +---------+
+ *  |  wiphy  |    | netdev  |
+ *  | +-------+    | +-------+
+ *  | | priv  |    | | wdev  |
+ *  | | +-----+    +-+-------+
+ *  | | | hw  |
+ *  | +-+-----+
+ *  | | card  |
+ *  +-+-------+
+ *
+ * priv has a link to netdev and device
+ * wdev has a link to wiphy
+ */
+struct orinoco_private
+*alloc_orinocodev(int sizeof_card,
+                  struct device *device,
+                  int (*hard_reset)(struct orinoco_private *),
+                  int (*stop_fw)(struct orinoco_private *, int))
+{
+        struct orinoco_private *priv;
+        struct wiphy *wiphy;
+
+        /* allocate wiphy
+         * NOTE: We only support a single virtual interface
+         *       but this may change when monitor mode is added
+         */
+        wiphy = wiphy_new(&orinoco_cfg_ops,
+                          sizeof(struct orinoco_private) + sizeof_card);
+        if (!wiphy)
+                return NULL;
+
+        priv = wiphy_priv(wiphy);
+        priv->dev = device;
+
+        if (sizeof_card)
+                priv->card = (void *)((unsigned long)priv
+                                      + sizeof(struct orinoco_private));
+        else
+                priv->card = NULL;
+
+        orinoco_wiphy_init(wiphy);
+
+#ifdef WIRELESS_SPY
+        priv->wireless_data.spy_data = &priv->spy_data;
+#endif
+
+        /* Set up default callbacks */
+        priv->hard_reset = hard_reset;
+        priv->stop_fw = stop_fw;
+
+        spin_lock_init(&priv->lock);
+        priv->open = 0;
+        priv->hw_unavailable = 1; /* orinoco_init() must clear this
+                                   * before anything else touches the
+                                   * hardware */
+        INIT_WORK(&priv->reset_work, orinoco_reset);
+        INIT_WORK(&priv->join_work, orinoco_join_ap);
+        INIT_WORK(&priv->wevent_work, orinoco_send_wevents);
+
+        INIT_LIST_HEAD(&priv->rx_list);
+        tasklet_init(&priv->rx_tasklet, orinoco_rx_isr_tasklet,
+                     (unsigned long) priv);
+
+        spin_lock_init(&priv->scan_lock);
+        INIT_LIST_HEAD(&priv->scan_list);
+        INIT_WORK(&priv->process_scan, orinoco_process_scan_results);
+
+        priv->last_linkstatus = 0xffff;
+
+#if defined(CONFIG_HERMES_CACHE_FW_ON_INIT) || defined(CONFIG_PM_SLEEP)
+        priv->cached_pri_fw = NULL;
+        priv->cached_fw = NULL;
+#endif
+
+        /* Register PM notifiers */
+        orinoco_register_pm_notifier(priv);
+
+        return priv;
+}
+EXPORT_SYMBOL(alloc_orinocodev);
+
+/* We can only support a single interface. We provide a separate
+ * function to set it up to distinguish between hardware
+ * initialisation and interface setup.
+ *
+ * The base_addr and irq parameters are passed on to netdev for use
+ * with SIOCGIFMAP.
+ */
+int orinoco_if_add(struct orinoco_private *priv,
+                   unsigned long base_addr,
+                   unsigned int irq,
+                   const struct net_device_ops *ops)
+{
+        struct wiphy *wiphy = priv_to_wiphy(priv);
+        struct wireless_dev *wdev;
+        struct net_device *dev;
+        int ret;
+
+        dev = alloc_etherdev(sizeof(struct wireless_dev));
+
+        if (!dev)
+                return -ENOMEM;
+
+        /* Initialise wireless_dev */
+        wdev = netdev_priv(dev);
+        wdev->wiphy = wiphy;
+        wdev->iftype = NL80211_IFTYPE_STATION;
+
+        /* Setup / override net_device fields */
+        dev->ieee80211_ptr = wdev;
+        dev->watchdog_timeo = HZ; /* 1 second timeout */
+        dev->wireless_handlers = &orinoco_handler_def;
+#ifdef WIRELESS_SPY
+        dev->wireless_data = &priv->wireless_data;
+#endif
+        /* Default to standard ops if not set */
+        if (ops)
+                netdev_attach_ops(dev, ops);
+        else
+                netdev_attach_ops(dev, &orinoco_netdev_ops);
+
+        /* we use the default eth_mac_addr for setting the MAC addr */
+
+        /* Reserve space in skb for the SNAP header */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26))
+        dev->needed_headroom = ENCAPS_OVERHEAD;
+#else
+        dev->hard_header_len += ENCAPS_OVERHEAD;
+#endif
+
+        netif_carrier_off(dev);
+
+        memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
+        memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
+
+        dev->base_addr = base_addr;
+        dev->irq = irq;
+
+        SET_NETDEV_DEV(dev, priv->dev);
+        ret = register_netdev(dev);
+        if (ret)
+                goto fail;
+
+        priv->ndev = dev;
+
+        /* Report what we've done */
+        dev_dbg(priv->dev, "Registerred interface %s.\n", dev->name);
+
+        return 0;
+
+ fail:
+        free_netdev(dev);
+        return ret;
+}
+EXPORT_SYMBOL(orinoco_if_add);
+
+void orinoco_if_del(struct orinoco_private *priv)
+{
+        struct net_device *dev = priv->ndev;
+
+        unregister_netdev(dev);
+        free_netdev(dev);
+}
+EXPORT_SYMBOL(orinoco_if_del);
+
+void free_orinocodev(struct orinoco_private *priv)
+{
+        struct wiphy *wiphy = priv_to_wiphy(priv);
+        struct orinoco_rx_data *rx_data, *temp;
+        struct orinoco_scan_data *sd, *sdtemp;
+
+        wiphy_unregister(wiphy);
+
+        /* If the tasklet is scheduled when we call tasklet_kill it
+         * will run one final time. However the tasklet will only
+         * drain priv->rx_list if the hw is still available. */
+        tasklet_kill(&priv->rx_tasklet);
+
+        /* Explicitly drain priv->rx_list */
+        list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) {
+                list_del(&rx_data->list);
+
+                dev_kfree_skb(rx_data->skb);
+                kfree(rx_data->desc);
+                kfree(rx_data);
+        }
+
+        cancel_work_sync(&priv->process_scan);
+        /* Explicitly drain priv->scan_list */
+        list_for_each_entry_safe(sd, sdtemp, &priv->scan_list, list) {
+                list_del(&sd->list);
+
+                if ((sd->len > 0) && sd->buf)
+                        kfree(sd->buf);
+                kfree(sd);
+        }
+
+        orinoco_unregister_pm_notifier(priv);
+        orinoco_uncache_fw(priv);
+
+        priv->wpa_ie_len = 0;
+        kfree(priv->wpa_ie);
+        orinoco_mic_free(priv);
+        wiphy_free(wiphy);
+}
+EXPORT_SYMBOL(free_orinocodev);
+
+int orinoco_up(struct orinoco_private *priv)
+{
+        struct net_device *dev = priv->ndev;
+        unsigned long flags;
+        int err;
+
+        priv->hw.ops->lock_irqsave(&priv->lock, &flags);
+
+        err = orinoco_reinit_firmware(priv);
+        if (err) {
+                printk(KERN_ERR "%s: Error %d re-initializing firmware\n",
+                       dev->name, err);
+                goto exit;
+        }
+
+        netif_device_attach(dev);
+        priv->hw_unavailable--;
+
+        if (priv->open && !priv->hw_unavailable) {
+                err = __orinoco_up(priv);
+                if (err)
+                        printk(KERN_ERR "%s: Error %d restarting card\n",
+                               dev->name, err);
+        }
+
+exit:
+        priv->hw.ops->unlock_irqrestore(&priv->lock, &flags);
+
+        return 0;
+}
+EXPORT_SYMBOL(orinoco_up);
+
+void orinoco_down(struct orinoco_private *priv)
+{
+        struct net_device *dev = priv->ndev;
+        unsigned long flags;
+        int err;
+
+        priv->hw.ops->lock_irqsave(&priv->lock, &flags);
+        err = __orinoco_down(priv);
+        if (err)
+                printk(KERN_WARNING "%s: Error %d downing interface\n",
+                       dev->name, err);
+
+        netif_device_detach(dev);
+        priv->hw_unavailable++;
+        priv->hw.ops->unlock_irqrestore(&priv->lock, &flags);
+}
+EXPORT_SYMBOL(orinoco_down);
+
+/********************************************************************/
+/* Module initialization                                            */
+/********************************************************************/
+
+/* Can't be declared "const" or the whole __initdata section will
+ * become const */
+static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
+        " (David Gibson <hermes@gibson.dropbear.id.au>, "
+        "Pavel Roskin <proski@gnu.org>, et al)";
+
+static int __init init_orinoco(void)
+{
+        printk(KERN_DEBUG "%s\n", version);
+        return 0;
+}
+
+static void __exit exit_orinoco(void)
+{
+}
+
+module_init(init_orinoco);
+module_exit(exit_orinoco);