blob: e29ecce8cf7862eea7961771a924ab46a3c2ff42 [file] [log] [blame]
From aa33ef52222963f20b152120ad84b6614b8421a1 Mon Sep 17 00:00:00 2001
From: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Date: Mon, 20 Feb 2023 10:51:47 +0800
Subject: [PATCH 17/38] hostapd: mtk: Add sta-assisted DFS state update
mechanism
Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
---
src/ap/dfs.c | 20 ++++++++++++++++++++
src/ap/dfs.h | 3 +++
src/ap/drv_callbacks.c | 28 ++++++++++++++++++++++++++++
src/common/wpa_ctrl.h | 1 +
src/drivers/driver.h | 14 ++++++++++++++
src/drivers/driver_nl80211_event.c | 6 ++++++
src/drivers/nl80211_copy.h | 6 ++++++
7 files changed, 78 insertions(+)
diff --git a/src/ap/dfs.c b/src/ap/dfs.c
index cfc3508..9d002cf 100644
--- a/src/ap/dfs.c
+++ b/src/ap/dfs.c
@@ -1513,6 +1513,26 @@ int hostapd_dfs_nop_finished(struct hostapd_iface *iface, int freq,
}
+int hostapd_dfs_sta_update_state(struct hostapd_iface *iface, int freq,
+ int ht_enabled, int chan_offset, int chan_width,
+ int cf1, int cf2, u32 state)
+{
+ wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, DFS_EVENT_STA_UPDATE
+ "freq=%d ht_enabled=%d chan_offset=%d chan_width=%d cf1=%d cf2=%d state=%s",
+ freq, ht_enabled, chan_offset, chan_width, cf1, cf2,
+ (state == HOSTAPD_CHAN_DFS_AVAILABLE) ? "available" : "usable");
+
+ /* Proceed only if DFS is not offloaded to the driver */
+ if (iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)
+ return 0;
+
+ set_dfs_state(iface, freq, ht_enabled, chan_offset, chan_width,
+ cf1, cf2, state);
+
+ return 0;
+}
+
+
int hostapd_is_dfs_required(struct hostapd_iface *iface)
{
int n_chans, n_chans1, start_chan_idx, start_chan_idx1, res;
diff --git a/src/ap/dfs.h b/src/ap/dfs.h
index c2556d2..25ba29c 100644
--- a/src/ap/dfs.h
+++ b/src/ap/dfs.h
@@ -30,6 +30,9 @@ int hostapd_dfs_radar_detected(struct hostapd_iface *iface, int freq,
int hostapd_dfs_nop_finished(struct hostapd_iface *iface, int freq,
int ht_enabled,
int chan_offset, int chan_width, int cf1, int cf2);
+int hostapd_dfs_sta_update_state(struct hostapd_iface *iface, int freq,
+ int ht_enabled, int chan_offset, int chan_width,
+ int cf1, int cf2, u32 state);
int hostapd_is_dfs_required(struct hostapd_iface *iface);
int hostapd_is_dfs_chan_available(struct hostapd_iface *iface);
int hostapd_dfs_start_cac(struct hostapd_iface *iface, int freq,
diff --git a/src/ap/drv_callbacks.c b/src/ap/drv_callbacks.c
index f6093c1..e7f1f19 100644
--- a/src/ap/drv_callbacks.c
+++ b/src/ap/drv_callbacks.c
@@ -2086,6 +2086,24 @@ static void hostapd_event_dfs_cac_started(struct hostapd_data *hapd,
radar->cf1, radar->cf2);
}
+static void hostapd_event_dfs_sta_cac_skipped(struct hostapd_data *hapd,
+ struct dfs_event *radar)
+{
+ wpa_printf(MSG_DEBUG, "DFS CAC skipped (by STA) on %d MHz", radar->freq);
+ hostapd_dfs_sta_update_state(hapd->iface, radar->freq, radar->ht_enabled,
+ radar->chan_offset, radar->chan_width,
+ radar->cf1, radar->cf2, HOSTAPD_CHAN_DFS_AVAILABLE);
+}
+
+static void hostapd_event_dfs_sta_cac_expired(struct hostapd_data *hapd,
+ struct dfs_event *radar)
+{
+ wpa_printf(MSG_DEBUG, "DFS CAC expired (by STA) on %d MHz", radar->freq);
+ hostapd_dfs_sta_update_state(hapd->iface, radar->freq, radar->ht_enabled,
+ radar->chan_offset, radar->chan_width,
+ radar->cf1, radar->cf2, HOSTAPD_CHAN_DFS_USABLE);
+}
+
#endif /* NEED_AP_MLME */
@@ -2407,6 +2425,16 @@ void hostapd_wpa_event(void *ctx, enum wpa_event_type event,
break;
hostapd_event_dfs_nop_finished(hapd, &data->dfs_event);
break;
+ case EVENT_DFS_STA_CAC_SKIPPED:
+ if (!data)
+ break;
+ hostapd_event_dfs_sta_cac_skipped(hapd, &data->dfs_event);
+ break;
+ case EVENT_DFS_STA_CAC_EXPIRED:
+ if (!data)
+ break;
+ hostapd_event_dfs_sta_cac_expired(hapd, &data->dfs_event);
+ break;
case EVENT_CHANNEL_LIST_CHANGED:
/* channel list changed (regulatory?), update channel list */
/* TODO: check this. hostapd_get_hw_features() initializes
diff --git a/src/common/wpa_ctrl.h b/src/common/wpa_ctrl.h
index 416e0d6..62f042e 100644
--- a/src/common/wpa_ctrl.h
+++ b/src/common/wpa_ctrl.h
@@ -374,6 +374,7 @@ extern "C" {
#define DFS_EVENT_CAC_COMPLETED "DFS-CAC-COMPLETED "
#define DFS_EVENT_NOP_FINISHED "DFS-NOP-FINISHED "
#define DFS_EVENT_PRE_CAC_EXPIRED "DFS-PRE-CAC-EXPIRED "
+#define DFS_EVENT_STA_UPDATE "DFS-STA-UPDATE "
#define AP_CSA_FINISHED "AP-CSA-FINISHED "
diff --git a/src/drivers/driver.h b/src/drivers/driver.h
index 38f6e8b..0469694 100644
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -5782,6 +5782,20 @@ enum wpa_event_type {
* EVENT_LINK_RECONFIG - Notification that AP links removed
*/
EVENT_LINK_RECONFIG,
+
+ /**
+ * EVENT_DFS_STA_CAC_SKIPPED - Notification that CAC has been skipped
+ *
+ * The channel in the notification is now marked as available.
+ */
+ EVENT_DFS_STA_CAC_SKIPPED,
+
+ /**
+ * EVENT_DFS_STA_CAC_EXPIRED - Notification that CAC has expired
+ *
+ * The channel in the notification is now marked as usable.
+ */
+ EVENT_DFS_STA_CAC_EXPIRED,
};
diff --git a/src/drivers/driver_nl80211_event.c b/src/drivers/driver_nl80211_event.c
index 701c32e..63d4401 100644
--- a/src/drivers/driver_nl80211_event.c
+++ b/src/drivers/driver_nl80211_event.c
@@ -2514,6 +2514,12 @@ static void nl80211_radar_event(struct wpa_driver_nl80211_data *drv,
case NL80211_RADAR_CAC_STARTED:
wpa_supplicant_event(drv->ctx, EVENT_DFS_CAC_STARTED, &data);
break;
+ case NL80211_RADAR_STA_CAC_SKIPPED:
+ wpa_supplicant_event(drv->ctx, EVENT_DFS_STA_CAC_SKIPPED, &data);
+ break;
+ case NL80211_RADAR_STA_CAC_EXPIRED:
+ wpa_supplicant_event(drv->ctx, EVENT_DFS_STA_CAC_EXPIRED, &data);
+ break;
default:
wpa_printf(MSG_DEBUG, "nl80211: Unknown radar event %d "
"received", event_type);
diff --git a/src/drivers/nl80211_copy.h b/src/drivers/nl80211_copy.h
index 82860ae..225864b 100644
--- a/src/drivers/nl80211_copy.h
+++ b/src/drivers/nl80211_copy.h
@@ -6643,6 +6643,10 @@ enum nl80211_smps_mode {
* applicable for ETSI dfs domain where pre-CAC is valid for ever.
* @NL80211_RADAR_CAC_STARTED: Channel Availability Check has been started,
* should be generated by HW if NL80211_EXT_FEATURE_DFS_OFFLOAD is enabled.
+ * @NL80211_RADAR_STA_CAC_SKIPPED: STA set the DFS state to available
+ * when receiving CSA/assoc resp
+ * @NL80211_RADAR_STA_CAC_EXPIRED: STA set the DFS state to usable
+ * when STA is disconnected or leaving the channel
*/
enum nl80211_radar_event {
NL80211_RADAR_DETECTED,
@@ -6651,6 +6655,8 @@ enum nl80211_radar_event {
NL80211_RADAR_NOP_FINISHED,
NL80211_RADAR_PRE_CAC_EXPIRED,
NL80211_RADAR_CAC_STARTED,
+ NL80211_RADAR_STA_CAC_SKIPPED,
+ NL80211_RADAR_STA_CAC_EXPIRED,
};
/**
--
2.18.0