[][MAC80211][hostapd][Add sta-assisted DFS state update mechanism in hostapd]
[Description]
Add sta-assisted DFS state update mechanism in hostapd
[Release-log]
N/A
Change-Id: I9e65abc22d8420a90055dbe523b3bf22ed937e44
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7156685
diff --git a/autobuild_mac80211_release/package/network/services/hostapd/patches/mtk-0018-hostapd-mtk-Add-sta-assisted-DFS-state-update-mechan.patch b/autobuild_mac80211_release/package/network/services/hostapd/patches/mtk-0018-hostapd-mtk-Add-sta-assisted-DFS-state-update-mechan.patch
new file mode 100644
index 0000000..db3c813
--- /dev/null
+++ b/autobuild_mac80211_release/package/network/services/hostapd/patches/mtk-0018-hostapd-mtk-Add-sta-assisted-DFS-state-update-mechan.patch
@@ -0,0 +1,189 @@
+From 3337e7b4f75a66e53e1320e49deba2b58a8a80b0 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 18/19] 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 307a4e1..d082fe0 100644
+--- a/src/ap/dfs.c
++++ b/src/ap/dfs.c
+@@ -1503,6 +1503,26 @@ 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 09783cb..275f6b3 100644
+--- a/src/ap/drv_callbacks.c
++++ b/src/ap/drv_callbacks.c
+@@ -1790,6 +1790,24 @@ 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 */
+
+
+@@ -2064,6 +2082,16 @@ 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 3435084..79c8a82 100644
+--- a/src/common/wpa_ctrl.h
++++ b/src/common/wpa_ctrl.h
+@@ -360,6 +360,7 @@ 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 265d86d..b5de0e6 100644
+--- a/src/drivers/driver.h
++++ b/src/drivers/driver.h
+@@ -5317,6 +5317,20 @@ enum wpa_event_type {
+ * EVENT_CCA_NOTIFY - Notification that CCA has completed
+ */
+ EVENT_CCA_NOTIFY,
++
++ /**
++ * 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 73bb7a4..ee922ac 100644
+--- a/src/drivers/driver_nl80211_event.c
++++ b/src/drivers/driver_nl80211_event.c
+@@ -1854,6 +1854,12 @@ 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 c4bf3ad..0937752 100644
+--- a/src/drivers/nl80211_copy.h
++++ b/src/drivers/nl80211_copy.h
+@@ -6431,6 +6431,10 @@ 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,
+@@ -6439,6 +6443,8 @@ 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
+
diff --git a/autobuild_mac80211_release/package/network/services/hostapd/patches/mtk-0019-hostapd-mtk-Fix-auto-ht-issue-when-switching-to-DFS-.patch b/autobuild_mac80211_release/package/network/services/hostapd/patches/mtk-0019-hostapd-mtk-Fix-auto-ht-issue-when-switching-to-DFS-.patch
new file mode 100644
index 0000000..8340fd9
--- /dev/null
+++ b/autobuild_mac80211_release/package/network/services/hostapd/patches/mtk-0019-hostapd-mtk-Fix-auto-ht-issue-when-switching-to-DFS-.patch
@@ -0,0 +1,43 @@
+From 83ab1a9cc51225095842d3c62bf75cf4efe63075 Mon Sep 17 00:00:00 2001
+From: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
+Date: Mon, 20 Feb 2023 16:58:20 +0800
+Subject: [PATCH] hostapd: mtk: Fix auto ht issue when switching to DFS channel
+
+Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
+---
+ hostapd/ctrl_iface.c | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+diff --git a/hostapd/ctrl_iface.c b/hostapd/ctrl_iface.c
+index 0ad8451..407790f 100644
+--- a/hostapd/ctrl_iface.c
++++ b/hostapd/ctrl_iface.c
+@@ -2698,6 +2698,12 @@ static int hostapd_ctrl_iface_chan_switch(struct hostapd_iface *iface,
+ break;
+ }
+
++ if (os_strstr(pos, " auto-ht")) {
++ settings.freq_params.ht_enabled = iface->conf->ieee80211n;
++ settings.freq_params.vht_enabled = iface->conf->ieee80211ac;
++ settings.freq_params.he_enabled = iface->conf->ieee80211ax;
++ }
++
+ if (settings.freq_params.center_freq1)
+ dfs_range += hostapd_is_dfs_overlap(
+ iface, bandwidth, settings.freq_params.center_freq1);
+@@ -2735,12 +2741,6 @@ static int hostapd_ctrl_iface_chan_switch(struct hostapd_iface *iface,
+ return 0;
+ }
+
+- if (os_strstr(pos, " auto-ht")) {
+- settings.freq_params.ht_enabled = iface->conf->ieee80211n;
+- settings.freq_params.vht_enabled = iface->conf->ieee80211ac;
+- settings.freq_params.he_enabled = iface->conf->ieee80211ax;
+- }
+-
+ for (i = 0; i < iface->num_bss; i++) {
+
+ /* Save CHAN_SWITCH VHT, HE, and EHT config */
+--
+2.18.0
+