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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This file is part of wl12xx
   4  *
   5  * Copyright (C) 2012 Texas Instruments. All rights reserved.
   6  */
   7
   8 #include <net/genetlink.h>
   9 #include "event.h"
  10 #include "scan.h"
  11 #include "conf.h"
  12 #include "../wlcore/cmd.h"
  13 #include "../wlcore/debug.h"
  14 #include "../wlcore/vendor_cmd.h"
  15
  16 int wl18xx_wait_for_event(struct wl1271 *wl, enum wlcore_wait_event event,
  17                           bool *timeout)
  18 {
  19         u32 local_event;
  20
  21         switch (event) {
  22         case WLCORE_EVENT_PEER_REMOVE_COMPLETE:
  23                 local_event = PEER_REMOVE_COMPLETE_EVENT_ID;
  24                 break;
  25
  26         case WLCORE_EVENT_DFS_CONFIG_COMPLETE:
  27                 local_event = DFS_CHANNELS_CONFIG_COMPLETE_EVENT;
  28                 break;
  29
  30         default:
  31                 /* event not implemented */
  32                 return 0;
  33         }
  34         return wlcore_cmd_wait_for_event_or_timeout(wl, local_event, timeout);
  35 }
  36
  37 static const char *wl18xx_radar_type_decode(u8 radar_type)
  38 {
  39         switch (radar_type) {
  40         case RADAR_TYPE_REGULAR:
  41                 return "REGULAR";
  42         case RADAR_TYPE_CHIRP:
  43                 return "CHIRP";
  44         case RADAR_TYPE_NONE:
  45         default:
  46                 return "N/A";
  47         }
  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 nl80211_band band;
  55         int freq;
  56
  57         if (sync_band == WLCORE_BAND_5GHZ)
  58                 band = NL80211_BAND_5GHZ;
  59         else
  60                 band = NL80211_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, NULL, 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, NULL,
  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 static void wlcore_event_time_sync(struct wl1271 *wl,
 103                                    u16 tsf_high_msb, u16 tsf_high_lsb,
 104                                    u16 tsf_low_msb, u16 tsf_low_lsb)
 105 {
 106         u32 clock_low;
 107         u32 clock_high;
 108
 109         clock_high = (tsf_high_msb << 16) | tsf_high_lsb;
 110         clock_low = (tsf_low_msb << 16) | tsf_low_lsb;
 111
 112         wl1271_info("TIME_SYNC_EVENT_ID: clock_high %u, clock low %u",
 113                     clock_high, clock_low);
 114 }
 115
 116 int wl18xx_process_mailbox_events(struct wl1271 *wl)
 117 {
 118         struct wl18xx_event_mailbox *mbox = wl->mbox;
 119         u32 vector;
 120
 121         vector = le32_to_cpu(mbox->events_vector);
 122         wl1271_debug(DEBUG_EVENT, "MBOX vector: 0x%x", vector);
 123
 124         if (vector & SCAN_COMPLETE_EVENT_ID) {
 125                 wl1271_debug(DEBUG_EVENT, "scan results: %d",
 126                              mbox->number_of_scan_results);
 127
 128                 if (wl->scan_wlvif)
 129                         wl18xx_scan_completed(wl, wl->scan_wlvif);
 130         }
 131
 132         if (vector & TIME_SYNC_EVENT_ID)
 133                 wlcore_event_time_sync(wl,
 134                         mbox->time_sync_tsf_high_msb,
 135                         mbox->time_sync_tsf_high_lsb,
 136                         mbox->time_sync_tsf_low_msb,
 137                         mbox->time_sync_tsf_low_lsb);
 138
 139         if (vector & RADAR_DETECTED_EVENT_ID) {
 140                 wl1271_info("radar event: channel %d type %s",
 141                             mbox->radar_channel,
 142                             wl18xx_radar_type_decode(mbox->radar_type));
 143
 144                 if (!wl->radar_debug_mode)
 145                         ieee80211_radar_detected(wl->hw);
 146         }
 147
 148         if (vector & PERIODIC_SCAN_REPORT_EVENT_ID) {
 149                 wl1271_debug(DEBUG_EVENT,
 150                              "PERIODIC_SCAN_REPORT_EVENT (results %d)",
 151                              mbox->number_of_sched_scan_results);
 152
 153                 wlcore_scan_sched_scan_results(wl);
 154         }
 155
 156         if (vector & PERIODIC_SCAN_COMPLETE_EVENT_ID)
 157                 wlcore_event_sched_scan_completed(wl, 1);
 158
 159         if (vector & RSSI_SNR_TRIGGER_0_EVENT_ID)
 160                 wlcore_event_rssi_trigger(wl, mbox->rssi_snr_trigger_metric);
 161
 162         if (vector & BA_SESSION_RX_CONSTRAINT_EVENT_ID)
 163                 wlcore_event_ba_rx_constraint(wl,
 164                                 le16_to_cpu(mbox->rx_ba_role_id_bitmap),
 165                                 le16_to_cpu(mbox->rx_ba_allowed_bitmap));
 166
 167         if (vector & BSS_LOSS_EVENT_ID)
 168                 wlcore_event_beacon_loss(wl,
 169                                          le16_to_cpu(mbox->bss_loss_bitmap));
 170
 171         if (vector & CHANNEL_SWITCH_COMPLETE_EVENT_ID)
 172                 wlcore_event_channel_switch(wl,
 173                         le16_to_cpu(mbox->channel_switch_role_id_bitmap),
 174                         true);
 175
 176         if (vector & DUMMY_PACKET_EVENT_ID)
 177                 wlcore_event_dummy_packet(wl);
 178
 179         /*
 180          * "TX retries exceeded" has a different meaning according to mode.
 181          * In AP mode the offending station is disconnected.
 182          */
 183         if (vector & MAX_TX_FAILURE_EVENT_ID)
 184                 wlcore_event_max_tx_failure(wl,
 185                                 le16_to_cpu(mbox->tx_retry_exceeded_bitmap));
 186
 187         if (vector & INACTIVE_STA_EVENT_ID)
 188                 wlcore_event_inactive_sta(wl,
 189                                 le16_to_cpu(mbox->inactive_sta_bitmap));
 190
 191         if (vector & REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID)
 192                 wlcore_event_roc_complete(wl);
 193
 194         if (vector & SMART_CONFIG_SYNC_EVENT_ID)
 195                 wlcore_smart_config_sync_event(wl, mbox->sc_sync_channel,
 196                                                mbox->sc_sync_band);
 197
 198         if (vector & SMART_CONFIG_DECODE_EVENT_ID)
 199                 wlcore_smart_config_decode_event(wl,
 200                                                  mbox->sc_ssid_len,
 201                                                  mbox->sc_ssid,
 202                                                  mbox->sc_pwd_len,
 203                                                  mbox->sc_pwd);
 204         if (vector & FW_LOGGER_INDICATION)
 205                 wlcore_event_fw_logger(wl);
 206
 207         if (vector & RX_BA_WIN_SIZE_CHANGE_EVENT_ID) {
 208                 struct wl12xx_vif *wlvif;
 209                 struct ieee80211_vif *vif;
 210                 struct ieee80211_sta *sta;
 211                 u8 link_id = mbox->rx_ba_link_id;
 212                 u8 win_size = mbox->rx_ba_win_size;
 213                 const u8 *addr;
 214
 215                 wlvif = wl->links[link_id].wlvif;
 216                 vif = wl12xx_wlvif_to_vif(wlvif);
 217
 218                 /* Update RX aggregation window size and call
 219                  * MAC routine to stop active RX aggregations for this link
 220                  */
 221                 if (wlvif->bss_type != BSS_TYPE_AP_BSS)
 222                         addr = vif->bss_conf.bssid;
 223                 else
 224                         addr = wl->links[link_id].addr;
 225
 226                 sta = ieee80211_find_sta(vif, addr);
 227                 if (sta) {
 228                         sta->max_rx_aggregation_subframes = win_size;
 229                         ieee80211_stop_rx_ba_session(vif,
 230                                                 wl->links[link_id].ba_bitmap,
 231                                                 addr);
 232                 }
 233         }
 234
 235         return 0;
 236 }