drivers/net/wireless/ti/wl18xx/event.c

   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 "../wlcore/cmd.h"
  26 #include "../wlcore/debug.h"
  27 #include "../wlcore/vendor_cmd.h"
  28
  29 int wl18xx_wait_for_event(struct wl1271 *wl, enum wlcore_wait_event event,
  30                           bool *timeout)
  31 {
  32         u32 local_event;
  33
  34         switch (event) {
  35         case WLCORE_EVENT_PEER_REMOVE_COMPLETE:
  36                 local_event = PEER_REMOVE_COMPLETE_EVENT_ID;
  37                 break;
  38
  39         case WLCORE_EVENT_DFS_CONFIG_COMPLETE:
  40                 local_event = DFS_CHANNELS_CONFIG_COMPLETE_EVENT;
  41                 break;
  42
  43         default:
  44                 /* event not implemented */
  45                 return 0;
  46         }
  47         return wlcore_cmd_wait_for_event_or_timeout(wl, local_event, timeout);
  48 }
  49
  50 static int wlcore_smart_config_sync_event(struct wl1271 *wl, u8 sync_channel,
  51                                           u8 sync_band)
  52 {
  53         struct sk_buff *skb;
  54         enum ieee80211_band band;
  55         int freq;
  56
  57         if (sync_band == WLCORE_BAND_5GHZ)
  58                 band = IEEE80211_BAND_5GHZ;
  59         else
  60                 band = IEEE80211_BAND_2GHZ;
  61
  62         freq = ieee80211_channel_to_frequency(sync_channel, band);
  63
  64         wl1271_debug(DEBUG_EVENT,
  65                      "SMART_CONFIG_SYNC_EVENT_ID, freq: %d (chan: %d band %d)",
  66                      freq, sync_channel, sync_band);
  67         skb = cfg80211_vendor_event_alloc(wl->hw->wiphy, 20,
  68                                           WLCORE_VENDOR_EVENT_SC_SYNC,
  69                                           GFP_KERNEL);
  70
  71         if (nla_put_u32(skb, WLCORE_VENDOR_ATTR_FREQ, freq)) {
  72                 kfree_skb(skb);
  73                 return -EMSGSIZE;
  74         }
  75         cfg80211_vendor_event(skb, GFP_KERNEL);
  76         return 0;
  77 }
  78
  79 static int wlcore_smart_config_decode_event(struct wl1271 *wl,
  80                                             u8 ssid_len, u8 *ssid,
  81                                             u8 pwd_len, u8 *pwd)
  82 {
  83         struct sk_buff *skb;
  84
  85         wl1271_debug(DEBUG_EVENT, "SMART_CONFIG_DECODE_EVENT_ID");
  86         wl1271_dump_ascii(DEBUG_EVENT, "SSID:", ssid, ssid_len);
  87
  88         skb = cfg80211_vendor_event_alloc(wl->hw->wiphy,
  89                                           ssid_len + pwd_len + 20,
  90                                           WLCORE_VENDOR_EVENT_SC_DECODE,
  91                                           GFP_KERNEL);
  92
  93         if (nla_put(skb, WLCORE_VENDOR_ATTR_SSID, ssid_len, ssid) ||
  94             nla_put(skb, WLCORE_VENDOR_ATTR_PSK, pwd_len, pwd)) {
  95                 kfree_skb(skb);
  96                 return -EMSGSIZE;
  97         }
  98         cfg80211_vendor_event(skb, GFP_KERNEL);
  99         return 0;
 100 }
 101
 102 int wl18xx_process_mailbox_events(struct wl1271 *wl)
 103 {
 104         struct wl18xx_event_mailbox *mbox = wl->mbox;
 105         u32 vector;
 106
 107         vector = le32_to_cpu(mbox->events_vector);
 108         wl1271_debug(DEBUG_EVENT, "MBOX vector: 0x%x", vector);
 109
 110         if (vector & SCAN_COMPLETE_EVENT_ID) {
 111                 wl1271_debug(DEBUG_EVENT, "scan results: %d",
 112                              mbox->number_of_scan_results);
 113
 114                 if (wl->scan_wlvif)
 115                         wl18xx_scan_completed(wl, wl->scan_wlvif);
 116         }
 117
 118         if (vector & PERIODIC_SCAN_REPORT_EVENT_ID) {
 119                 wl1271_debug(DEBUG_EVENT,
 120                              "PERIODIC_SCAN_REPORT_EVENT (results %d)",
 121                              mbox->number_of_sched_scan_results);
 122
 123                 wlcore_scan_sched_scan_results(wl);
 124         }
 125
 126         if (vector & PERIODIC_SCAN_COMPLETE_EVENT_ID)
 127                 wlcore_event_sched_scan_completed(wl, 1);
 128
 129         if (vector & RSSI_SNR_TRIGGER_0_EVENT_ID)
 130                 wlcore_event_rssi_trigger(wl, mbox->rssi_snr_trigger_metric);
 131
 132         if (vector & BA_SESSION_RX_CONSTRAINT_EVENT_ID)
 133                 wlcore_event_ba_rx_constraint(wl,
 134                                 le16_to_cpu(mbox->rx_ba_role_id_bitmap),
 135                                 le16_to_cpu(mbox->rx_ba_allowed_bitmap));
 136
 137         if (vector & BSS_LOSS_EVENT_ID)
 138                 wlcore_event_beacon_loss(wl,
 139                                          le16_to_cpu(mbox->bss_loss_bitmap));
 140
 141         if (vector & CHANNEL_SWITCH_COMPLETE_EVENT_ID)
 142                 wlcore_event_channel_switch(wl,
 143                         le16_to_cpu(mbox->channel_switch_role_id_bitmap),
 144                         true);
 145
 146         if (vector & DUMMY_PACKET_EVENT_ID)
 147                 wlcore_event_dummy_packet(wl);
 148
 149         /*
 150          * "TX retries exceeded" has a different meaning according to mode.
 151          * In AP mode the offending station is disconnected.
 152          */
 153         if (vector & MAX_TX_FAILURE_EVENT_ID)
 154                 wlcore_event_max_tx_failure(wl,
 155                                 le32_to_cpu(mbox->tx_retry_exceeded_bitmap));
 156
 157         if (vector & INACTIVE_STA_EVENT_ID)
 158                 wlcore_event_inactive_sta(wl,
 159                                 le32_to_cpu(mbox->inactive_sta_bitmap));
 160
 161         if (vector & REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID)
 162                 wlcore_event_roc_complete(wl);
 163
 164         if (vector & SMART_CONFIG_SYNC_EVENT_ID)
 165                 wlcore_smart_config_sync_event(wl, mbox->sc_sync_channel,
 166                                                mbox->sc_sync_band);
 167
 168         if (vector & SMART_CONFIG_DECODE_EVENT_ID)
 169                 wlcore_smart_config_decode_event(wl,
 170                                                  mbox->sc_ssid_len,
 171                                                  mbox->sc_ssid,
 172                                                  mbox->sc_pwd_len,
 173                                                  mbox->sc_pwd);
 174
 175         return 0;
 176 }