root/drivers/net/wireless/ti/wl18xx/event.c
// SPDX-License-Identifier: GPL-2.0-only
/*
 * This file is part of wl12xx
 *
 * Copyright (C) 2012 Texas Instruments. All rights reserved.
 */

#include <net/genetlink.h>
#include "event.h"
#include "scan.h"
#include "conf.h"
#include "../wlcore/cmd.h"
#include "../wlcore/debug.h"
#include "../wlcore/vendor_cmd.h"

int wl18xx_wait_for_event(struct wl1271 *wl, enum wlcore_wait_event event,
                          bool *timeout)
{
        u32 local_event;

        switch (event) {
        case WLCORE_EVENT_PEER_REMOVE_COMPLETE:
                local_event = PEER_REMOVE_COMPLETE_EVENT_ID;
                break;

        case WLCORE_EVENT_DFS_CONFIG_COMPLETE:
                local_event = DFS_CHANNELS_CONFIG_COMPLETE_EVENT;
                break;

        default:
                /* event not implemented */
                return 0;
        }
        return wlcore_cmd_wait_for_event_or_timeout(wl, local_event, timeout);
}

static const char *wl18xx_radar_type_decode(u8 radar_type)
{
        switch (radar_type) {
        case RADAR_TYPE_REGULAR:
                return "REGULAR";
        case RADAR_TYPE_CHIRP:
                return "CHIRP";
        case RADAR_TYPE_NONE:
        default:
                return "N/A";
        }
}

static int wlcore_smart_config_sync_event(struct wl1271 *wl, u8 sync_channel,
                                          u8 sync_band)
{
        struct sk_buff *skb;
        enum nl80211_band band;
        int freq;

        if (sync_band == WLCORE_BAND_5GHZ)
                band = NL80211_BAND_5GHZ;
        else
                band = NL80211_BAND_2GHZ;

        freq = ieee80211_channel_to_frequency(sync_channel, band);

        wl1271_debug(DEBUG_EVENT,
                     "SMART_CONFIG_SYNC_EVENT_ID, freq: %d (chan: %d band %d)",
                     freq, sync_channel, sync_band);
        skb = cfg80211_vendor_event_alloc(wl->hw->wiphy, NULL, 20,
                                          WLCORE_VENDOR_EVENT_SC_SYNC,
                                          GFP_KERNEL);

        if (nla_put_u32(skb, WLCORE_VENDOR_ATTR_FREQ, freq)) {
                kfree_skb(skb);
                return -EMSGSIZE;
        }
        cfg80211_vendor_event(skb, GFP_KERNEL);
        return 0;
}

static int wlcore_smart_config_decode_event(struct wl1271 *wl,
                                            u8 ssid_len, u8 *ssid,
                                            u8 pwd_len, u8 *pwd)
{
        struct sk_buff *skb;

        wl1271_debug(DEBUG_EVENT, "SMART_CONFIG_DECODE_EVENT_ID");
        wl1271_dump_ascii(DEBUG_EVENT, "SSID:", ssid, ssid_len);

        skb = cfg80211_vendor_event_alloc(wl->hw->wiphy, NULL,
                                          ssid_len + pwd_len + 20,
                                          WLCORE_VENDOR_EVENT_SC_DECODE,
                                          GFP_KERNEL);

        if (nla_put(skb, WLCORE_VENDOR_ATTR_SSID, ssid_len, ssid) ||
            nla_put(skb, WLCORE_VENDOR_ATTR_PSK, pwd_len, pwd)) {
                kfree_skb(skb);
                return -EMSGSIZE;
        }
        cfg80211_vendor_event(skb, GFP_KERNEL);
        return 0;
}

static void wlcore_event_time_sync(struct wl1271 *wl,
                                   u16 tsf_high_msb, u16 tsf_high_lsb,
                                   u16 tsf_low_msb, u16 tsf_low_lsb)
{
        u32 clock_low;
        u32 clock_high;

        clock_high = (tsf_high_msb << 16) | tsf_high_lsb;
        clock_low = (tsf_low_msb << 16) | tsf_low_lsb;

        wl1271_info("TIME_SYNC_EVENT_ID: clock_high %u, clock low %u",
                    clock_high, clock_low);
}

int wl18xx_process_mailbox_events(struct wl1271 *wl)
{
        struct wl18xx_event_mailbox *mbox = wl->mbox;
        u32 vector;

        vector = le32_to_cpu(mbox->events_vector);
        wl1271_debug(DEBUG_EVENT, "MBOX vector: 0x%x", vector);

        if (vector & SCAN_COMPLETE_EVENT_ID) {
                wl1271_debug(DEBUG_EVENT, "scan results: %d",
                             mbox->number_of_scan_results);

                if (wl->scan_wlvif)
                        wl18xx_scan_completed(wl, wl->scan_wlvif);
        }

        if (vector & TIME_SYNC_EVENT_ID)
                wlcore_event_time_sync(wl,
                        le16_to_cpu(mbox->time_sync_tsf_high_msb),
                        le16_to_cpu(mbox->time_sync_tsf_high_lsb),
                        le16_to_cpu(mbox->time_sync_tsf_low_msb),
                        le16_to_cpu(mbox->time_sync_tsf_low_lsb));

        if (vector & RADAR_DETECTED_EVENT_ID) {
                wl1271_info("radar event: channel %d type %s",
                            mbox->radar_channel,
                            wl18xx_radar_type_decode(mbox->radar_type));

                if (!wl->radar_debug_mode)
                        ieee80211_radar_detected(wl->hw, NULL);
        }

        if (vector & PERIODIC_SCAN_REPORT_EVENT_ID) {
                wl1271_debug(DEBUG_EVENT,
                             "PERIODIC_SCAN_REPORT_EVENT (results %d)",
                             mbox->number_of_sched_scan_results);

                wlcore_scan_sched_scan_results(wl);
        }

        if (vector & PERIODIC_SCAN_COMPLETE_EVENT_ID)
                wlcore_event_sched_scan_completed(wl, 1);

        if (vector & RSSI_SNR_TRIGGER_0_EVENT_ID)
                wlcore_event_rssi_trigger(wl, mbox->rssi_snr_trigger_metric);

        if (vector & BA_SESSION_RX_CONSTRAINT_EVENT_ID)
                wlcore_event_ba_rx_constraint(wl,
                                le16_to_cpu(mbox->rx_ba_role_id_bitmap),
                                le16_to_cpu(mbox->rx_ba_allowed_bitmap));

        if (vector & BSS_LOSS_EVENT_ID)
                wlcore_event_beacon_loss(wl,
                                         le16_to_cpu(mbox->bss_loss_bitmap));

        if (vector & CHANNEL_SWITCH_COMPLETE_EVENT_ID)
                wlcore_event_channel_switch(wl,
                        le16_to_cpu(mbox->channel_switch_role_id_bitmap),
                        true);

        if (vector & DUMMY_PACKET_EVENT_ID)
                wlcore_event_dummy_packet(wl);

        /*
         * "TX retries exceeded" has a different meaning according to mode.
         * In AP mode the offending station is disconnected.
         */
        if (vector & MAX_TX_FAILURE_EVENT_ID)
                wlcore_event_max_tx_failure(wl,
                                le16_to_cpu(mbox->tx_retry_exceeded_bitmap));

        if (vector & INACTIVE_STA_EVENT_ID)
                wlcore_event_inactive_sta(wl,
                                le16_to_cpu(mbox->inactive_sta_bitmap));

        if (vector & REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID)
                wlcore_event_roc_complete(wl);

        if (vector & SMART_CONFIG_SYNC_EVENT_ID)
                wlcore_smart_config_sync_event(wl, mbox->sc_sync_channel,
                                               mbox->sc_sync_band);

        if (vector & SMART_CONFIG_DECODE_EVENT_ID)
                wlcore_smart_config_decode_event(wl,
                                                 mbox->sc_ssid_len,
                                                 mbox->sc_ssid,
                                                 mbox->sc_pwd_len,
                                                 mbox->sc_pwd);
        if (vector & FW_LOGGER_INDICATION)
                wlcore_event_fw_logger(wl);

        if (vector & RX_BA_WIN_SIZE_CHANGE_EVENT_ID) {
                struct wl12xx_vif *wlvif;
                struct ieee80211_vif *vif;
                struct ieee80211_sta *sta;
                u8 link_id = mbox->rx_ba_link_id;
                u8 win_size = mbox->rx_ba_win_size;
                const u8 *addr;

                wlvif = wl->links[link_id].wlvif;
                vif = wl12xx_wlvif_to_vif(wlvif);

                /* Update RX aggregation window size and call
                 * MAC routine to stop active RX aggregations for this link
                 */
                if (wlvif->bss_type != BSS_TYPE_AP_BSS)
                        addr = vif->bss_conf.bssid;
                else
                        addr = wl->links[link_id].addr;

                sta = ieee80211_find_sta(vif, addr);
                if (sta) {
                        sta->max_rx_aggregation_subframes = win_size;
                        ieee80211_stop_rx_ba_session(vif,
                                                wl->links[link_id].ba_bitmap,
                                                addr);
                }
        }

        return 0;
}