From 42c4e6e0b07e6446ab8d1fad900f7392a017c595 Mon Sep 17 00:00:00 2001
From: twy_2000 <twy2004@gmail.com>
Date: Sun, 17 May 2020 19:23:13 +0800
Subject: [PATCH] dawn_iwinfo: filter out global interface

---
 src/utils/dawn_iwinfo.c | 26 ++++++++++++++++++--------
 1 file changed, 18 insertions(+), 8 deletions(-)

diff --git a/src/utils/dawn_iwinfo.c b/src/utils/dawn_iwinfo.c
index 7ed1f40..86541cc 100644
--- a/src/utils/dawn_iwinfo.c
+++ b/src/utils/dawn_iwinfo.c
@@ -45,6 +45,8 @@ int compare_essid_iwinfo(uint8_t *bssid_addr, uint8_t *bssid_addr_to_compare) {
 
     while ((entry = readdir(dirp)) != NULL && (essid == NULL || essid_to_compare == NULL)) {
         if (entry->d_type == DT_SOCK) {
+			if (strcmp(entry->d_name, "global") == 0) 
+				continue;
 
             iw = iwinfo_backend(entry->d_name);
 
@@ -111,7 +113,8 @@ int get_bandwidth(const char *ifname, uint8_t *client_addr, float *rx_rate, floa
     char buf[IWINFO_BUFSIZE];
     struct iwinfo_assoclist_entry *e;
     const struct iwinfo_ops *iw;
-
+    if (strcmp(ifname, "global") == 0) 
+        return 0;
     iw = iwinfo_backend(ifname);
 
     if (iw->assoclist(ifname, buf, &len)) {
@@ -166,7 +169,8 @@ int get_rssi(const char *ifname, uint8_t *client_addr) {
     char buf[IWINFO_BUFSIZE];
     struct iwinfo_assoclist_entry *e;
     const struct iwinfo_ops *iw;
-
+    if (strcmp(ifname, "global") == 0) 
+        return INT_MIN;
     iw = iwinfo_backend(ifname);
 
     if (iw->assoclist(ifname, buf, &len)) {
@@ -219,7 +223,8 @@ int get_expected_throughput(const char *ifname, uint8_t *client_addr) {
     char buf[IWINFO_BUFSIZE];
     struct iwinfo_assoclist_entry *e;
     const struct iwinfo_ops *iw;
-
+    if (strcmp(ifname, "global") == 0) 
+        return INT_MIN;
     iw = iwinfo_backend(ifname);
 
     if (iw->assoclist(ifname, buf, &len)) {
@@ -245,7 +250,8 @@ int get_expected_throughput(const char *ifname, uint8_t *client_addr) {
 
 int get_bssid(const char *ifname, uint8_t *bssid_addr) {
     const struct iwinfo_ops *iw;
-
+    if (strcmp(ifname, "global") == 0) 
+        return 0;
     iw = iwinfo_backend(ifname);
 
     static char buf[18] = { 0 };
@@ -262,7 +268,8 @@ int get_bssid(const char *ifname, uint8_t *bssid_addr) {
 int get_ssid(const char *ifname, char* ssid) {
     const struct iwinfo_ops *iw;
     char buf[IWINFO_ESSID_MAX_SIZE+1] = { 0 };
-
+    if (strcmp(ifname, "global") == 0) 
+        return 0;
     iw = iwinfo_backend(ifname);
     if (iw->ssid(ifname, buf))
         memset(buf, 0, sizeof(buf));
@@ -279,7 +286,8 @@ int get_channel_utilization(const char *ifname, uint64_t *last_channel_time, uin
     char buf[IWINFO_BUFSIZE];
     struct iwinfo_survey_entry *e;
     int ret = 0;
-
+    if (strcmp(ifname, "global") == 0) 
+        return 0;
     iw = iwinfo_backend(ifname);
 
     int freq;
@@ -323,7 +331,8 @@ int get_channel_utilization(const char *ifname, uint64_t *last_channel_time, uin
 
 int support_ht(const char *ifname) {
     const struct iwinfo_ops *iw;
-
+    if (strcmp(ifname, "global") == 0) 
+        return 0;
     iw = iwinfo_backend(ifname);
     int htmodes = 0;
 
@@ -341,7 +350,8 @@ int support_ht(const char *ifname) {
 
 int support_vht(const char *ifname) {
     const struct iwinfo_ops *iw;
-
+    if (strcmp(ifname, "global") == 0) 
+        return 0;
     iw = iwinfo_backend(ifname);
     int htmodes = 0;