linux/drivers/net/wireless/ti/wl18xx/event.c
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   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
  16int 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
  37static 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
  50static 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
  79static 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
 102static 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
 116int 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}
 237