Add support for WNM event report to handle BSS Color Collision and In Use event.
Co-developed-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
Signed-off-by: Yi-Chia Hsieh <yi-chia.hsieh@xxxxxxxxxxxx>
Signed-off-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
---
src/ap/wnm_ap.c | 78 ++++++++++++++++++++++++++++++++++++
src/common/ieee802_11_defs.h | 35 ++++++++++++++++
2 files changed, 113 insertions(+)
diff --git a/src/ap/wnm_ap.c b/src/ap/wnm_ap.c
index 23a352c9b..92f7e56ae 100644
--- a/src/ap/wnm_ap.c
+++ b/src/ap/wnm_ap.c
@@ -643,6 +643,80 @@ static void ieee802_11_rx_wnm_coloc_intf_report(struct hostapd_data *hapd,
}
+
+static const char *wnm_event_type2str(enum wnm_event_report_type wtype)
+{
+#define W2S(wtype) case WNM_EVENT_TYPE_ ## wtype: return #wtype;
+ switch (wtype) {
+ W2S(TRANSITION)
+ W2S(RSNA)
+ W2S(P2P_LINK)
+ W2S(WNM_LOG)
+ W2S(BSS_COLOR_COLLISION)
+ W2S(BSS_COLOR_INUSE)
+ }
+ return "UNKNOWN";
+#undef W2S
+}
+
+
+static void ieee802_11_rx_wnm_event_report(struct hostapd_data *hapd,
+ const u8 *addr, const u8 *buf,
+ size_t len)
+{
+ struct sta_info *sta;
+ u8 dialog_token;
+ struct wnm_event_report_element *report_ie;
+
+ if (len < 6) {
+ wpa_printf(MSG_DEBUG, "WNM: Ignore too short WNM Event Report frame from "
+ MACSTR, MAC2STR(addr));
+ return;
+ }
+
+ dialog_token = *buf++;
+ report_ie = (struct wnm_event_report_element *) buf;
+
+ if (report_ie->eid != WLAN_EID_EVENT_REPORT)
+ return;
+
+ if (report_ie->status != WNM_STATUS_SUCCESSFUL)
+ return;
+
+ wpa_printf(MSG_DEBUG, "WNM: Received WNM Event Report frame from "
+ MACSTR " dialog_token=%u autonomous=%s type=%d (%s)",
+ MAC2STR(addr), dialog_token, (!report_ie->token) ? "true" : "false",
+ report_ie->type, wnm_event_type2str(report_ie->type));
+
+ wpa_hexdump(MSG_MSGDUMP, "WNM: Event Report",
+ buf, len);
+
+ sta = ap_get_sta(hapd, addr);
+ if (!sta) {
+ wpa_printf(MSG_DEBUG, "Station " MACSTR
+ " not found for received WNM Event Report",
+ MAC2STR(addr));
+ return;
+ }
+
+ switch (report_ie->type) {
+ case WNM_EVENT_TYPE_BSS_COLOR_COLLISION:
+ hostapd_switch_color(hapd->iface->bss[0],
+ report_ie->u.bss_color_collision.color_bitmap);
+ return;
+ case WNM_EVENT_TYPE_BSS_COLOR_INUSE:
+ if (report_ie->u.bss_color_inuse.color > 0 &&
+ report_ie->u.bss_color_inuse.color < 64)
+ hapd->color_collision_bitmap |=
+ (1ULL << report_ie->u.bss_color_inuse.color);
+ return;
+ default:
+ wpa_printf(MSG_DEBUG, "WNM Event Report type=%d(%s) not supported",
+ report_ie->type, wnm_event_type2str(report_ie->type));
+ }
+}
+
+
int ieee802_11_rx_wnm_action_ap(struct hostapd_data *hapd,
const struct ieee80211_mgmt *mgmt, size_t len)
{
@@ -658,6 +732,10 @@ int ieee802_11_rx_wnm_action_ap(struct hostapd_data *hapd,
plen = len - IEEE80211_HDRLEN - 2;
switch (action) {
+ case WNM_EVENT_REPORT:
+ ieee802_11_rx_wnm_event_report(hapd, mgmt->sa, payload,
+ plen);
+ return 0;
case WNM_BSS_TRANS_MGMT_QUERY:
ieee802_11_rx_bss_trans_mgmt_query(hapd, mgmt->sa, payload,
plen);
diff --git a/src/common/ieee802_11_defs.h b/src/common/ieee802_11_defs.h
index 21b48ac52..edbe60393 100644
--- a/src/common/ieee802_11_defs.h
+++ b/src/common/ieee802_11_defs.h
@@ -1959,6 +1959,41 @@ enum wnm_notification_Type {
WNM_NOTIF_TYPE_VENDOR_SPECIFIC = 221,
};
+struct wnm_event_report_element {
+ u8 eid; /* WLAN_EID_EVENT_REPORT */
+ u8 len;
+ u8 token;
+ u8 type;
+ u8 status;
+ union {
+ struct {
+ u8 tsf[8];
+ u64 color_bitmap;
+ } STRUCT_PACKED bss_color_collision;
+ struct {
+ u8 tsf[8];
+ u8 color;
+ } STRUCT_PACKED bss_color_inuse;
+ } u;
+} STRUCT_PACKED;
+
+enum wnm_event_report_status {
+ WNM_STATUS_SUCCESSFUL = 0,
+ WNM_STATUS_REQ_FAILED = 1,
+ WNM_STATUS_REQ_REFUSED = 2,
+ WNM_STATUS_REQ_INCAPABLE = 3,
+ WNM_STATUS_FREQUENT_TRANSITION = 4,
+};
+
+enum wnm_event_report_type {
+ WNM_EVENT_TYPE_TRANSITION = 0,
+ WNM_EVENT_TYPE_RSNA = 1,
+ WNM_EVENT_TYPE_P2P_LINK = 2,
+ WNM_EVENT_TYPE_WNM_LOG = 3,
+ WNM_EVENT_TYPE_BSS_COLOR_COLLISION = 4,
+ WNM_EVENT_TYPE_BSS_COLOR_INUSE = 5,
+};
+
/* Channel Switch modes (802.11h) */
#define CHAN_SWITCH_MODE_ALLOW_TX 0
#define CHAN_SWITCH_MODE_BLOCK_TX 1
--
2.39.0
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