From c30755555b41c56839d4995e35e616008fd2ebe6 Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Fri, 25 Jul 2008 22:37:50 +0000
Subject: [PATCH] wpa_supplicant: sort scan results by link quality to improve
 supplicant-controlled roaming

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11931 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../wpa_supplicant/patches/140-quality.patch  | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 package/wpa_supplicant/patches/140-quality.patch

diff --git a/package/wpa_supplicant/patches/140-quality.patch b/package/wpa_supplicant/patches/140-quality.patch
new file mode 100644
index 000000000..e5e8397c8
--- /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;
+ 
-- 
2.20.1