autobuild_mac80211_release/package/network/services/hostapd/patches/904-master-Support-including-neignbor-report-elements-in-BTM-re.patch

From 4a7b4a0fe05dd01ae64dd4e291d05de6d5f05bb7 Mon Sep 17 00:00:00 2001
From: "howard.hsu" <howard-yh.hsu@mediatek.com>
Date: Wed, 19 Jan 2022 19:49:09 +0800
Subject: [PATCH 3/9] Support including neignbor report elements in BTM
 response

---
 src/ap/wnm_ap.c | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/src/ap/wnm_ap.c b/src/ap/wnm_ap.c
index 72cd126..b55b3f3 100644
--- a/src/ap/wnm_ap.c
+++ b/src/ap/wnm_ap.c
@@ -20,6 +20,7 @@
 #include "ap/wpa_auth.h"
 #include "mbo_ap.h"
 #include "wnm_ap.h"
+#include "ap/neighbor_db.h"
 
 #define MAX_TFS_IE_LEN  1024
 
@@ -370,9 +371,21 @@ static int ieee802_11_send_bss_trans_mgmt_request(struct hostapd_data *hapd,
 	u8 *pos;
 	int res;
 
-	mgmt = os_zalloc(sizeof(*mgmt));
-	if (mgmt == NULL)
+	int nr_num = hostapd_neighbor_count(hapd);
+	int nr_size = ETH_ALEN + 4 + 1 + 1 + 1 + 5;
+	int total_nr_size = nr_num * nr_size;
+	u8 *nr_data = os_malloc(total_nr_size);
+	int nr_data_len = 0;
+	if(nr_data == NULL) {
+		wpa_printf (MSG_ERROR, "Failed to allocate memory");
+	} else {
+	    nr_data_len = hostapd_neighbor_insert_buffer(hapd, nr_data, total_nr_size);
+	}
+	mgmt = os_zalloc(sizeof(*mgmt) + nr_data_len);
+	if (mgmt == NULL) {
+		wpa_printf (MSG_ERROR, "Failed to allocate memory for mgmt frame");
 		return -1;
+	}
 	os_memcpy(mgmt->da, addr, ETH_ALEN);
 	os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
 	os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
@@ -382,10 +395,18 @@ static int ieee802_11_send_bss_trans_mgmt_request(struct hostapd_data *hapd,
 	mgmt->u.action.u.bss_tm_req.action = WNM_BSS_TRANS_MGMT_REQ;
 	mgmt->u.action.u.bss_tm_req.dialog_token = dialog_token;
 	mgmt->u.action.u.bss_tm_req.req_mode = 0;
+	if(nr_num) {
+		mgmt->u.action.u.bss_tm_req.req_mode |= WNM_BSS_TM_REQ_PREF_CAND_LIST_INCLUDED;
+	}
 	mgmt->u.action.u.bss_tm_req.disassoc_timer = host_to_le16(0);
 	mgmt->u.action.u.bss_tm_req.validity_interval = 1;
 	pos = mgmt->u.action.u.bss_tm_req.variable;
 
+	if(nr_num) {
+		os_memcpy(pos, nr_data, nr_data_len);
+		pos += nr_data_len;
+	}
+
 	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 "
-- 
2.18.0