From: David Bauer <mail@david-bauer.net>
Date: Sat, 27 Nov 2021 22:08:28 +0100
Subject: [PATCH] hostapd: add OpenWrt specific statistic counters

This adds a new struct for storing statistics not (yet) tracked by
hostapd regarding RRM and WNM activity.

These statistics can be read using the get_status hostapd interface ubus
method.

--- a/src/ap/hostapd.h
+++ b/src/ap/hostapd.h
@@ -168,6 +168,21 @@ struct hostapd_sae_commit_queue {
 };
 
 /**
+ * struct hostapd_openwrt_stats - OpenWrt custom STA/AP statistics
+ */
+struct hostapd_openwrt_stats {
+	struct {
+		u64 neighbor_report_tx;
+	} rrm;
+
+	struct {
+		u64 bss_transition_query_rx;
+		u64 bss_transition_request_tx;
+		u64 bss_transition_response_rx;
+	} wnm;
+};
+
+/**
  * struct hostapd_data - hostapd per-BSS data structure
  */
 struct hostapd_data {
@@ -181,6 +196,9 @@ struct hostapd_data {
 
 	u8 own_addr[ETH_ALEN];
 
+	/* OpenWrt specific statistics */
+	struct hostapd_openwrt_stats openwrt_stats;
+
 	int num_sta; /* number of entries in sta_list */
 	struct sta_info *sta_list; /* STA info list head */
 #define STA_HASH_SIZE 256
--- a/src/ap/rrm.c
+++ b/src/ap/rrm.c
@@ -269,6 +269,8 @@ static void hostapd_send_nei_report_resp
 		}
 	}
 
+	hapd->openwrt_stats.rrm.neighbor_report_tx++;
+
 	hostapd_drv_send_action(hapd, hapd->iface->freq, 0, addr,
 				wpabuf_head(buf), wpabuf_len(buf));
 	wpabuf_free(buf);
--- a/src/ap/wnm_ap.c
+++ b/src/ap/wnm_ap.c
@@ -410,6 +410,7 @@ static int ieee802_11_send_bss_trans_mgm
 	mgmt->u.action.u.bss_tm_req.validity_interval = 1;
 	pos = mgmt->u.action.u.bss_tm_req.variable;
 
+	hapd->openwrt_stats.wnm.bss_transition_request_tx++;
 	wpa_printf(MSG_DEBUG, "WNM: Send BSS Transition Management Request to "
 		   MACSTR " dialog_token=%u req_mode=0x%x disassoc_timer=%u "
 		   "validity_interval=%u",
@@ -814,10 +815,12 @@ int ieee802_11_rx_wnm_action_ap(struct h
 					       plen);
 		return 0;
 	case WNM_BSS_TRANS_MGMT_QUERY:
+		hapd->openwrt_stats.wnm.bss_transition_query_rx++;
 		ieee802_11_rx_bss_trans_mgmt_query(hapd, mgmt->sa, payload,
 						   plen);
 		return 0;
 	case WNM_BSS_TRANS_MGMT_RESP:
+		hapd->openwrt_stats.wnm.bss_transition_response_rx++;
 		ieee802_11_rx_bss_trans_mgmt_resp(hapd, mgmt->sa, payload,
 						  plen);
 		return 0;
@@ -865,6 +868,7 @@ int wnm_send_disassoc_imminent(struct ho
 
 	pos = mgmt->u.action.u.bss_tm_req.variable;
 
+	hapd->openwrt_stats.wnm.bss_transition_request_tx++;
 	wpa_printf(MSG_DEBUG, "WNM: Send BSS Transition Management Request frame to indicate imminent disassociation (disassoc_timer=%d) to "
 		   MACSTR, disassoc_timer, MAC2STR(sta->addr));
 	if (hostapd_drv_send_mlme(hapd, buf, pos - buf, 0, NULL, 0, 0) < 0) {
@@ -947,6 +951,7 @@ int wnm_send_ess_disassoc_imminent(struc
 		return -1;
 	}
 
+	hapd->openwrt_stats.wnm.bss_transition_request_tx++;
 	if (disassoc_timer) {
 		/* send disassociation frame after time-out */
 		set_disassoc_timer(hapd, sta, disassoc_timer);
@@ -1028,6 +1033,7 @@ int wnm_send_bss_tm_req(struct hostapd_d
 	}
 	os_free(buf);
 
+	hapd->openwrt_stats.wnm.bss_transition_request_tx++;
 	if (disassoc_timer) {
 #ifdef CONFIG_IEEE80211BE
 		if (ap_sta_is_mld(hapd, sta)) {