linux/drivers/net/wireless/ti/wl18xx/event.c
<<
>>
Prefs
   1/*
   2 * This file is part of wl12xx
   3 *
   4 * Copyright (C) 2012 Texas Instruments. All rights reserved.
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public License
   8 * version 2 as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful, but
  11 * WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 * General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18 * 02110-1301 USA
  19 *
  20 */
  21
  22#include <net/genetlink.h>
  23#include "event.h"
  24#include "scan.h"
  25#include "conf.h"
  26#include "../wlcore/cmd.h"
  27#include "../wlcore/debug.h"
  28#include "../wlcore/vendor_cmd.h"
  29
  30int wl18xx_wait_for_event(struct wl1271 *wl, enum wlcore_wait_event event,
  31                          bool *timeout)
  32{
  33        u32 local_event;
  34
  35        switch (event) {
  36        case WLCORE_EVENT_PEER_REMOVE_COMPLETE:
  37                local_event = PEER_REMOVE_COMPLETE_EVENT_ID;
  38                break;
  39
  40        case WLCORE_EVENT_DFS_CONFIG_COMPLETE:
  41                local_event = DFS_CHANNELS_CONFIG_COMPLETE_EVENT;
  42                break;
  43
  44        default:
  45                /* event not implemented */
  46                return 0;
  47        }
  48        return wlcore_cmd_wait_for_event_or_timeout(wl, local_event, timeout);
  49}
  50
  51static const char *wl18xx_radar_type_decode(u8 radar_type)
  52{
  53        switch (radar_type) {
  54        case RADAR_TYPE_REGULAR:
  55                return "REGULAR";
  56        case RADAR_TYPE_CHIRP:
  57                return "CHIRP";
  58        case RADAR_TYPE_NONE:
  59        default:
  60                return "N/A";
  61        }
  62}
  63
  64static int wlcore_smart_config_sync_event(struct wl1271 *wl, u8 sync_channel,
  65                                          u8 sync_band)
  66{
  67        struct sk_buff *skb;
  68        enum nl80211_band band;
  69        int freq;
  70
  71        if (sync_band == WLCORE_BAND_5GHZ)
  72                band = NL80211_BAND_5GHZ;
  73        else
  74                band = NL80211_BAND_2GHZ;
  75
  76        freq = ieee80211_channel_to_frequency(sync_channel, band);
  77
  78        wl1271_debug(DEBUG_EVENT,
  79                     "SMART_CONFIG_SYNC_EVENT_ID, freq: %d (chan: %d band %d)",
  80                     freq, sync_channel, sync_band);
  81        skb = cfg80211_vendor_event_alloc(wl->hw->wiphy, NULL, 20,
  82                                          WLCORE_VENDOR_EVENT_SC_SYNC,
  83                                          GFP_KERNEL);
  84
  85        if (nla_put_u32(skb, WLCORE_VENDOR_ATTR_FREQ, freq)) {
  86                kfree_skb(skb);
  87                return -EMSGSIZE;
  88        }
  89        cfg80211_vendor_event(skb, GFP_KERNEL);
  90        return 0;
  91}
  92
  93static int wlcore_smart_config_decode_event(struct wl1271 *wl,
  94                                            u8 ssid_len, u8 *ssid,
  95                                            u8 pwd_len, u8 *pwd)
  96{
  97        struct sk_buff *skb;
  98
  99        wl1271_debug(DEBUG_EVENT, "SMART_CONFIG_DECODE_EVENT_ID");
 100        wl1271_dump_ascii(DEBUG_EVENT, "SSID:", ssid, ssid_len);
 101
 102        skb = cfg80211_vendor_event_alloc(wl->hw->wiphy, NULL,
 103                                          ssid_len + pwd_len + 20,
 104                                          WLCORE_VENDOR_EVENT_SC_DECODE,
 105                                          GFP_KERNEL);
 106
 107        if (nla_put(skb, WLCORE_VENDOR_ATTR_SSID, ssid_len, ssid) ||
 108            nla_put(skb, WLCORE_VENDOR_ATTR_PSK, pwd_len, pwd)) {
 109                kfree_skb(skb);
 110                return -EMSGSIZE;
 111        }
 112        cfg80211_vendor_event(skb, GFP_KERNEL);
 113        return 0;
 114}
 115
 116static void wlcore_event_time_sync(struct wl1271 *wl,
 117                                   u16 tsf_high_msb, u16 tsf_high_lsb,
 118                                   u16 tsf_low_msb, u16 tsf_low_lsb)
 119{
 120        u32 clock_low;
 121        u32 clock_high;
 122
 123        clock_high = (tsf_high_msb << 16) | tsf_high_lsb;
 124        clock_low = (tsf_low_msb << 16) | tsf_low_lsb;
 125
 126        wl1271_info("TIME_SYNC_EVENT_ID: clock_high %u, clock low %u",
 127                    clock_high, clock_low);
 128}
 129
 130int wl18xx_process_mailbox_events(struct wl1271 *wl)
 131{
 132        struct wl18xx_event_mailbox *mbox = wl->mbox;
 133        u32 vector;
 134
 135        vector = le32_to_cpu(mbox->events_vector);
 136        wl1271_debug(DEBUG_EVENT, "MBOX vector: 0x%x", vector);
 137
 138        if (vector & SCAN_COMPLETE_EVENT_ID) {
 139                wl1271_debug(DEBUG_EVENT, "scan results: %d",
 140                             mbox->number_of_scan_results);
 141
 142                if (wl->scan_wlvif)
 143                        wl18xx_scan_completed(wl, wl->scan_wlvif);
 144        }
 145
 146        if (vector & TIME_SYNC_EVENT_ID)
 147                wlcore_event_time_sync(wl,
 148                        mbox->time_sync_tsf_high_msb,
 149                        mbox->time_sync_tsf_high_lsb,
 150                        mbox->time_sync_tsf_low_msb,
 151                        mbox->time_sync_tsf_low_lsb);
 152
 153        if (vector & RADAR_DETECTED_EVENT_ID) {
 154                wl1271_info("radar event: channel %d type %s",
 155                            mbox->radar_channel,
 156                            wl18xx_radar_type_decode(mbox->radar_type));
 157
 158                if (!wl->radar_debug_mode)
 159                        ieee80211_radar_detected(wl->hw);
 160        }
 161
 162        if (vector & PERIODIC_SCAN_REPORT_EVENT_ID) {
 163                wl1271_debug(DEBUG_EVENT,
 164                             "PERIODIC_SCAN_REPORT_EVENT (results %d)",
 165                             mbox->number_of_sched_scan_results);
 166
 167                wlcore_scan_sched_scan_results(wl);
 168        }
 169
 170        if (vector & PERIODIC_SCAN_COMPLETE_EVENT_ID)
 171                wlcore_event_sched_scan_completed(wl, 1);
 172
 173        if (vector & RSSI_SNR_TRIGGER_0_EVENT_ID)
 174                wlcore_event_rssi_trigger(wl, mbox->rssi_snr_trigger_metric);
 175
 176        if (vector & BA_SESSION_RX_CONSTRAINT_EVENT_ID)
 177                wlcore_event_ba_rx_constraint(wl,
 178                                le16_to_cpu(mbox->rx_ba_role_id_bitmap),
 179                                le16_to_cpu(mbox->rx_ba_allowed_bitmap));
 180
 181        if (vector & BSS_LOSS_EVENT_ID)
 182                wlcore_event_beacon_loss(wl,
 183                                         le16_to_cpu(mbox->bss_loss_bitmap));
 184
 185        if (vector & CHANNEL_SWITCH_COMPLETE_EVENT_ID)
 186                wlcore_event_channel_switch(wl,
 187                        le16_to_cpu(mbox->channel_switch_role_id_bitmap),
 188                        true);
 189
 190        if (vector & DUMMY_PACKET_EVENT_ID)
 191                wlcore_event_dummy_packet(wl);
 192
 193        /*
 194         * "TX retries exceeded" has a different meaning according to mode.
 195         * In AP mode the offending station is disconnected.
 196         */
 197        if (vector & MAX_TX_FAILURE_EVENT_ID)
 198                wlcore_event_max_tx_failure(wl,
 199                                le16_to_cpu(mbox->tx_retry_exceeded_bitmap));
 200
 201        if (vector & INACTIVE_STA_EVENT_ID)
 202                wlcore_event_inactive_sta(wl,
 203                                le16_to_cpu(mbox->inactive_sta_bitmap));
 204
 205        if (vector & REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID)
 206                wlcore_event_roc_complete(wl);
 207
 208        if (vector & SMART_CONFIG_SYNC_EVENT_ID)
 209                wlcore_smart_config_sync_event(wl, mbox->sc_sync_channel,
 210                                               mbox->sc_sync_band);
 211
 212        if (vector & SMART_CONFIG_DECODE_EVENT_ID)
 213                wlcore_smart_config_decode_event(wl,
 214                                                 mbox->sc_ssid_len,
 215                                                 mbox->sc_ssid,
 216                                                 mbox->sc_pwd_len,
 217                                                 mbox->sc_pwd);
 218        if (vector & FW_LOGGER_INDICATION)
 219                wlcore_event_fw_logger(wl);
 220
 221        if (vector & RX_BA_WIN_SIZE_CHANGE_EVENT_ID) {
 222                struct wl12xx_vif *wlvif;
 223                struct ieee80211_vif *vif;
 224                struct ieee80211_sta *sta;
 225                u8 link_id = mbox->rx_ba_link_id;
 226                u8 win_size = mbox->rx_ba_win_size;
 227                const u8 *addr;
 228
 229                wlvif = wl->links[link_id].wlvif;
 230                vif = wl12xx_wlvif_to_vif(wlvif);
 231
 232                /* Update RX aggregation window size and call
 233                 * MAC routine to stop active RX aggregations for this link
 234                 */
 235                if (wlvif->bss_type != BSS_TYPE_AP_BSS)
 236                        addr = vif->bss_conf.bssid;
 237                else
 238                        addr = wl->links[link_id].addr;
 239
 240                sta = ieee80211_find_sta(vif, addr);
 241                if (sta) {
 242                        sta->max_rx_aggregation_subframes = win_size;
 243                        ieee80211_stop_rx_ba_session(vif,
 244                                                wl->links[link_id].ba_bitmap,
 245                                                addr);
 246                }
 247        }
 248
 249        return 0;
 250}
 251