LXR linux/drivers/net/wireless/orinoco/cfg.c

   1/* cfg80211 support
   2 *
   3 * See copyright notice in main.c
   4 */
   5#include <linux/ieee80211.h>
   6#include <net/cfg80211.h>
   7#include "hw.h"
   8#include "main.h"
   9#include "orinoco.h"
  10
  11#include "cfg.h"
  12
  13/* Supported bitrates. Must agree with hw.c */
  14static struct ieee80211_rate orinoco_rates[] = {
  15        { .bitrate = 10 },
  16        { .bitrate = 20 },
  17        { .bitrate = 55 },
  18        { .bitrate = 110 },
  19};
  20
  21static const void * const orinoco_wiphy_privid = &orinoco_wiphy_privid;
  22
  23/* Called after orinoco_private is allocated. */
  24void orinoco_wiphy_init(struct wiphy *wiphy)
  25{
  26        struct orinoco_private *priv = wiphy_priv(wiphy);
  27
  28        wiphy->privid = orinoco_wiphy_privid;
  29
  30        set_wiphy_dev(wiphy, priv->dev);
  31}
  32
  33/* Called after firmware is initialised */
  34int orinoco_wiphy_register(struct wiphy *wiphy)
  35{
  36        struct orinoco_private *priv = wiphy_priv(wiphy);
  37        int i, channels = 0;
  38
  39        if (priv->firmware_type == FIRMWARE_TYPE_AGERE)
  40                wiphy->max_scan_ssids = 1;
  41        else
  42                wiphy->max_scan_ssids = 0;
  43
  44        wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
  45
  46        /* TODO: should we set if we only have demo ad-hoc?
  47         *       (priv->has_port3)
  48         */
  49        if (priv->has_ibss)
  50                wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
  51
  52        if (!priv->broken_monitor || force_monitor)
  53                wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
  54
  55        priv->band.bitrates = orinoco_rates;
  56        priv->band.n_bitrates = ARRAY_SIZE(orinoco_rates);
  57
  58        /* Only support channels allowed by the card EEPROM */
  59        for (i = 0; i < NUM_CHANNELS; i++) {
  60                if (priv->channel_mask & (1 << i)) {
  61                        priv->channels[i].center_freq =
  62                                ieee80211_dsss_chan_to_freq(i+1);
  63                        channels++;
  64                }
  65        }
  66        priv->band.channels = priv->channels;
  67        priv->band.n_channels = channels;
  68
  69        wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
  70        wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
  71
  72        i = 0;
  73        if (priv->has_wep) {
  74                priv->cipher_suites[i] = WLAN_CIPHER_SUITE_WEP40;
  75                i++;
  76
  77                if (priv->has_big_wep) {
  78                        priv->cipher_suites[i] = WLAN_CIPHER_SUITE_WEP104;
  79                        i++;
  80                }
  81        }
  82        if (priv->has_wpa) {
  83                priv->cipher_suites[i] = WLAN_CIPHER_SUITE_TKIP;
  84                i++;
  85        }
  86        wiphy->cipher_suites = priv->cipher_suites;
  87        wiphy->n_cipher_suites = i;
  88
  89        wiphy->rts_threshold = priv->rts_thresh;
  90        if (!priv->has_mwo)
  91                wiphy->frag_threshold = priv->frag_thresh + 1;
  92        wiphy->retry_short = priv->short_retry_limit;
  93        wiphy->retry_long = priv->long_retry_limit;
  94
  95        return wiphy_register(wiphy);
  96}
  97
  98static int orinoco_change_vif(struct wiphy *wiphy, struct net_device *dev,
  99                              enum nl80211_iftype type, u32 *flags,
 100                              struct vif_params *params)
 101{
 102        struct orinoco_private *priv = wiphy_priv(wiphy);
 103        int err = 0;
 104        unsigned long lock;
 105
 106        if (orinoco_lock(priv, &lock) != 0)
 107                return -EBUSY;
 108
 109        switch (type) {
 110        case NL80211_IFTYPE_ADHOC:
 111                if (!priv->has_ibss && !priv->has_port3)
 112                        err = -EINVAL;
 113                break;
 114
 115        case NL80211_IFTYPE_STATION:
 116                break;
 117
 118        case NL80211_IFTYPE_MONITOR:
 119                if (priv->broken_monitor && !force_monitor) {
 120                        wiphy_warn(wiphy,
 121                                   "Monitor mode support is buggy in this firmware, not enabling\n");
 122                        err = -EINVAL;
 123                }
 124                break;
 125
 126        default:
 127                err = -EINVAL;
 128        }
 129
 130        if (!err) {
 131                priv->iw_mode = type;
 132                set_port_type(priv);
 133                err = orinoco_commit(priv);
 134        }
 135
 136        orinoco_unlock(priv, &lock);
 137
 138        return err;
 139}
 140
 141static int orinoco_scan(struct wiphy *wiphy, struct net_device *dev,
 142                        struct cfg80211_scan_request *request)
 143{
 144        struct orinoco_private *priv = wiphy_priv(wiphy);
 145        int err;
 146
 147        if (!request)
 148                return -EINVAL;
 149
 150        if (priv->scan_request && priv->scan_request != request)
 151                return -EBUSY;
 152
 153        priv->scan_request = request;
 154
 155        err = orinoco_hw_trigger_scan(priv, request->ssids);
 156        /* On error the we aren't processing the request */
 157        if (err)
 158                priv->scan_request = NULL;
 159
 160        return err;
 161}
 162
 163static int orinoco_set_channel(struct wiphy *wiphy,
 164                        struct net_device *netdev,
 165                        struct ieee80211_channel *chan,
 166                        enum nl80211_channel_type channel_type)
 167{
 168        struct orinoco_private *priv = wiphy_priv(wiphy);
 169        int err = 0;
 170        unsigned long flags;
 171        int channel;
 172
 173        if (!chan)
 174                return -EINVAL;
 175
 176        if (channel_type != NL80211_CHAN_NO_HT)
 177                return -EINVAL;
 178
 179        if (chan->band != IEEE80211_BAND_2GHZ)
 180                return -EINVAL;
 181
 182        channel = ieee80211_freq_to_dsss_chan(chan->center_freq);
 183
 184        if ((channel < 1) || (channel > NUM_CHANNELS) ||
 185             !(priv->channel_mask & (1 << (channel-1))))
 186                return -EINVAL;
 187
 188        if (orinoco_lock(priv, &flags) != 0)
 189                return -EBUSY;
 190
 191        priv->channel = channel;
 192        if (priv->iw_mode == NL80211_IFTYPE_MONITOR) {
 193                /* Fast channel change - no commit if successful */
 194                hermes_t *hw = &priv->hw;
 195                err = hw->ops->cmd_wait(hw, HERMES_CMD_TEST |
 196                                            HERMES_TEST_SET_CHANNEL,
 197                                        channel, NULL);
 198        }
 199        orinoco_unlock(priv, &flags);
 200
 201        return err;
 202}
 203
 204static int orinoco_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 205{
 206        struct orinoco_private *priv = wiphy_priv(wiphy);
 207        int frag_value = -1;
 208        int rts_value = -1;
 209        int err = 0;
 210
 211        if (changed & WIPHY_PARAM_RETRY_SHORT) {
 212                /* Setting short retry not supported */
 213                err = -EINVAL;
 214        }
 215
 216        if (changed & WIPHY_PARAM_RETRY_LONG) {
 217                /* Setting long retry not supported */
 218                err = -EINVAL;
 219        }
 220
 221        if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
 222                /* Set fragmentation */
 223                if (priv->has_mwo) {
 224                        if (wiphy->frag_threshold < 0)
 225                                frag_value = 0;
 226                        else {
 227                                printk(KERN_WARNING "%s: Fixed fragmentation "
 228                                       "is not supported on this firmware. "
 229                                       "Using MWO robust instead.\n",
 230                                       priv->ndev->name);
 231                                frag_value = 1;
 232                        }
 233                } else {
 234                        if (wiphy->frag_threshold < 0)
 235                                frag_value = 2346;
 236                        else if ((wiphy->frag_threshold < 257) ||
 237                                 (wiphy->frag_threshold > 2347))
 238                                err = -EINVAL;
 239                        else
 240                                /* cfg80211 value is 257-2347 (odd only)
 241                                 * orinoco rid has range 256-2346 (even only) */
 242                                frag_value = wiphy->frag_threshold & ~0x1;
 243                }
 244        }
 245
 246        if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 247                /* Set RTS.
 248                 *
 249                 * Prism documentation suggests default of 2432,
 250                 * and a range of 0-3000.
 251                 *
 252                 * Current implementation uses 2347 as the default and
 253                 * the upper limit.
 254                 */
 255
 256                if (wiphy->rts_threshold < 0)
 257                        rts_value = 2347;
 258                else if (wiphy->rts_threshold > 2347)
 259                        err = -EINVAL;
 260                else
 261                        rts_value = wiphy->rts_threshold;
 262        }
 263
 264        if (!err) {
 265                unsigned long flags;
 266
 267                if (orinoco_lock(priv, &flags) != 0)
 268                        return -EBUSY;
 269
 270                if (frag_value >= 0) {
 271                        if (priv->has_mwo)
 272                                priv->mwo_robust = frag_value;
 273                        else
 274                                priv->frag_thresh = frag_value;
 275                }
 276                if (rts_value >= 0)
 277                        priv->rts_thresh = rts_value;
 278
 279                err = orinoco_commit(priv);
 280
 281                orinoco_unlock(priv, &flags);
 282        }
 283
 284        return err;
 285}
 286
 287const struct cfg80211_ops orinoco_cfg_ops = {
 288        .change_virtual_intf = orinoco_change_vif,
 289        .set_channel = orinoco_set_channel,
 290        .scan = orinoco_scan,
 291        .set_wiphy_params = orinoco_set_wiphy_params,
 292};
 293