wpa_supplicant: sort scan results by link quality to improve supplicant-controlled...

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11931 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/wpa_supplicant/patches/140-quality.patch b/package/wpa_supplicant/patches/140-quality.patch
new file mode 100644 (file)
index 0000000..e5e8397
--- /dev/null
+++ b/package/wpa_supplicant/patches/140-quality.patch
@@ -0,0 +1,35 @@
+Index: wpa_supplicant-0.6.3/wpa_supplicant/wpa_supplicant.c
+===================================================================
+--- wpa_supplicant-0.6.3.orig/wpa_supplicant/wpa_supplicant.c  2008-07-24 16:28:58.000000000 +0200
++++ wpa_supplicant-0.6.3/wpa_supplicant/wpa_supplicant.c       2008-07-24 16:47:40.000000000 +0200
+@@ -1182,7 +1182,7 @@
+ {
+ #define SCAN_AP_LIMIT 128
+       struct wpa_scan_result *results;
+-      int num, i;
++      int num, i, j;
+       struct wpa_scan_results *res;
+ 
+       results = os_malloc(SCAN_AP_LIMIT * sizeof(struct wpa_scan_result));
+@@ -1279,6 +1279,21 @@
+               res->res[res->num++] = r;
+       }
+ 
++      /* sort scan results by quality */
++      for(i = 0; i < num - 1; i++) {
++              for(j = i + 1; j < num; j++) {
++                      struct wpa_scan_result tmp;
++
++                      if (results[i].qual > results[j].qual)
++                              continue;
++
++                      os_memcpy(&tmp, &results[i], sizeof(tmp));
++                      os_memcpy(&results[i], &results[j], sizeof(tmp));
++                      os_memcpy(&results[j], &tmp, sizeof(tmp));
++              }
++      }
++
++
+       os_free(results);
+       wpa_s->scan_res = res;
+