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

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11931 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2008-07-25 22:37:50 +00:00
parent c4cd641fe7
commit c30755555b
1 changed files with 35 additions and 0 deletions
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35
package/wpa_supplicant/patches/140-quality.patch Normal file
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@ -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;