[PATCH v3 5/5] bss coloring: handle the collision and CCA events coming from the kernel
Lorenzo Bianconi
lorenzo at kernel.org
Mon Mar 21 04:10:34 PDT 2022
From: John Crispin <john at phrozen.org>
This patch activates the functionality of the previous patches by handling
the actual events that will trigger the CCA process.
Tested-by: Peter Chiu <chui-hao.chiu at mediatek.com>
Co-developed-by: Lorenzo Bianconi <lorenzo at kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
Signed-off-by: John Crispin <john at phrozen.org>
Signed-off-by: Ryder Lee <ryder.lee at mediatek.com>
---
src/ap/drv_callbacks.c | 44 ++++++++++++++++++++++
src/drivers/driver.h | 27 ++++++++++++++
src/drivers/driver_common.c | 4 ++
src/drivers/driver_nl80211_event.c | 59 ++++++++++++++++++++++++++++++
4 files changed, 134 insertions(+)
diff --git a/src/ap/drv_callbacks.c b/src/ap/drv_callbacks.c
index d97b3535b..93425bb31 100644
--- a/src/ap/drv_callbacks.c
+++ b/src/ap/drv_callbacks.c
@@ -1777,6 +1777,39 @@ static void hostapd_event_wds_sta_interface_status(struct hostapd_data *hapd,
}
+#ifdef CONFIG_IEEE80211AX
+static void hostapd_event_bss_color_collision(struct hostapd_data *hapd,
+ u64 bitmap)
+{
+ /* the bss color is shared amongst all BBSs on a specific phy.
+ * therefore we always start the color change on the primary BSS
+ */
+ wpa_printf(MSG_DEBUG, "BSS color collision on %s", hapd->conf->iface);
+ hostapd_switch_color(hapd->iface->bss[0], bitmap);
+}
+
+static void hostapd_event_cca(struct hostapd_data *hapd, enum wpa_event_type event)
+{
+ switch (event) {
+ case EVENT_CCA_STARTED_NOTIFY:
+ wpa_printf(MSG_DEBUG, "CCA started on on %s", hapd->conf->iface);
+ break;
+ case EVENT_CCA_NOTIFY:
+ wpa_printf(MSG_DEBUG, "CCA finished on on %s", hapd->conf->iface);
+ hapd->iface->conf->he_op.he_bss_color = hapd->cca_color;
+ hostapd_cleanup_cca_params(hapd);
+ break;
+ case EVENT_CCA_ABORTED_NOTIFY:
+ wpa_printf(MSG_DEBUG, "CCA aborted on on %s", hapd->conf->iface);
+ hostapd_cleanup_cca_params(hapd);
+ break;
+ default:
+ break;
+ }
+}
+#endif /* CONFIG_IEEE80211AX */
+
+
#ifdef CONFIG_OWE
static int hostapd_notif_update_dh_ie(struct hostapd_data *hapd,
const u8 *peer, const u8 *ie,
@@ -2083,6 +2116,17 @@ void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
data->wds_sta_interface.ifname,
data->wds_sta_interface.sta_addr);
break;
+#ifdef CONFIG_IEEE80211AX
+ case EVENT_BSS_COLOR_COLLISION:
+ hostapd_event_bss_color_collision(hapd,
+ data->bss_color_collision.bitmap);
+ break;
+ case EVENT_CCA_STARTED_NOTIFY:
+ case EVENT_CCA_ABORTED_NOTIFY:
+ case EVENT_CCA_NOTIFY:
+ hostapd_event_cca(hapd, event);
+ break;
+#endif /* CONFIG_IEEE80211AX */
default:
wpa_printf(MSG_DEBUG, "Unknown event %d", event);
break;
diff --git a/src/drivers/driver.h b/src/drivers/driver.h
index 71c10715f..4ece0f8c5 100644
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -5178,6 +5178,26 @@ enum wpa_event_type {
* non-zero wait time and that has not been explicitly cancelled.
*/
EVENT_TX_WAIT_EXPIRE,
+
+ /**
+ * EVENT_BSS_COLOR_COLLISION - Notification of a BSS color collision
+ */
+ EVENT_BSS_COLOR_COLLISION,
+
+ /**
+ * EVENT_CCA_STARTED_NOTIFY - Notification that CCA has started
+ */
+ EVENT_CCA_STARTED_NOTIFY,
+
+ /**
+ * EVENT_CCA_ABORTED_NOTIFY - Notification that CCA has aborted
+ */
+ EVENT_CCA_ABORTED_NOTIFY,
+
+ /**
+ * EVENT_CCA_NOTIFY - Notification that CCA has completed
+ */
+ EVENT_CCA_NOTIFY,
};
@@ -6070,6 +6090,13 @@ union wpa_event_data {
struct unprot_beacon {
const u8 *sa;
} unprot_beacon;
+
+ /**
+ * struct bss_color_collision - Data for EVENT_BSS_COLOR_COLLISION
+ */
+ struct bss_color_collision {
+ u64 bitmap;
+ } bss_color_collision;
};
/**
diff --git a/src/drivers/driver_common.c b/src/drivers/driver_common.c
index 741521c67..8db786168 100644
--- a/src/drivers/driver_common.c
+++ b/src/drivers/driver_common.c
@@ -91,6 +91,10 @@ const char * event_to_string(enum wpa_event_type event)
E2S(UPDATE_DH);
E2S(UNPROT_BEACON);
E2S(TX_WAIT_EXPIRE);
+ E2S(BSS_COLOR_COLLISION);
+ E2S(CCA_STARTED_NOTIFY);
+ E2S(CCA_ABORTED_NOTIFY);
+ E2S(CCA_NOTIFY);
}
return "UNKNOWN";
diff --git a/src/drivers/driver_nl80211_event.c b/src/drivers/driver_nl80211_event.c
index 085acb85a..fcabcc835 100644
--- a/src/drivers/driver_nl80211_event.c
+++ b/src/drivers/driver_nl80211_event.c
@@ -2910,6 +2910,51 @@ static void nl80211_assoc_comeback(struct wpa_driver_nl80211_data *drv,
MAC2STR((u8 *) nla_data(mac)), nla_get_u32(timeout));
}
+#ifdef CONFIG_IEEE80211AX
+static void mlme_event_obss_color_collision(struct wpa_driver_nl80211_data *drv,
+ struct nlattr *tb[])
+{
+ union wpa_event_data data;
+
+ if (!tb[NL80211_ATTR_OBSS_COLOR_BITMAP])
+ return;
+
+ os_memset(&data, 0, sizeof(data));
+ data.bss_color_collision.bitmap = nla_get_u64(tb[NL80211_ATTR_OBSS_COLOR_BITMAP]);
+
+ wpa_printf(MSG_DEBUG, "nl80211: BSS color collision - bitmap %08lx",
+ data.bss_color_collision.bitmap);
+
+ wpa_supplicant_event(drv->ctx, EVENT_BSS_COLOR_COLLISION, &data);
+}
+
+static void mlme_event_color_change_announcement_started(struct wpa_driver_nl80211_data *drv)
+{
+ union wpa_event_data data = {};
+
+ wpa_printf(MSG_DEBUG, "nl80211: CCA started");
+
+ wpa_supplicant_event(drv->ctx, EVENT_CCA_STARTED_NOTIFY, &data);
+}
+
+static void mlme_event_color_change_announcement_aborted(struct wpa_driver_nl80211_data *drv)
+{
+ union wpa_event_data data = {};
+
+ wpa_printf(MSG_DEBUG, "nl80211: CCA aborted");
+
+ wpa_supplicant_event(drv->ctx, EVENT_CCA_ABORTED_NOTIFY, &data);
+}
+
+static void mlme_event_color_change_announcement_completed(struct wpa_driver_nl80211_data *drv)
+{
+ union wpa_event_data data = {};
+
+ wpa_printf(MSG_DEBUG, "nl80211: CCA completed");
+
+ wpa_supplicant_event(drv->ctx, EVENT_CCA_NOTIFY, &data);
+}
+#endif /* CONFIG_IEEE80211AX */
static void do_process_drv_event(struct i802_bss *bss, int cmd,
struct nlattr **tb)
@@ -3164,6 +3209,20 @@ static void do_process_drv_event(struct i802_bss *bss, int cmd,
nl80211_assoc_comeback(drv, tb[NL80211_ATTR_MAC],
tb[NL80211_ATTR_TIMEOUT]);
break;
+#ifdef CONFIG_IEEE80211AX
+ case NL80211_CMD_OBSS_COLOR_COLLISION:
+ mlme_event_obss_color_collision(drv, tb);
+ break;
+ case NL80211_CMD_COLOR_CHANGE_STARTED:
+ mlme_event_color_change_announcement_started(drv);
+ break;
+ case NL80211_CMD_COLOR_CHANGE_ABORTED:
+ mlme_event_color_change_announcement_aborted(drv);
+ break;
+ case NL80211_CMD_COLOR_CHANGE_COMPLETED:
+ mlme_event_color_change_announcement_completed(drv);
+ break;
+#endif /* CONFIG_IEEE80211AX */
default:
wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Ignored unknown event "
"(cmd=%d)", cmd);
--
2.35.1
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