Add a scan result cache to improve roaming speed if the driver gave us a background scan before losing the connection.
-Index: wpa_supplicant-0.6.3/wpa_supplicant/config.h
-===================================================================
---- wpa_supplicant-0.6.3.orig/wpa_supplicant/config.h 2008-02-23 03:45:24.000000000 +0100
-+++ wpa_supplicant-0.6.3/wpa_supplicant/config.h 2008-07-10 15:08:21.000000000 +0200
+--- a/wpa_supplicant/config.h
++++ b/wpa_supplicant/config.h
@@ -97,6 +97,12 @@
int ap_scan;
* ctrl_interface - Parameters for the control interface
*
* If this is specified, %wpa_supplicant will open a control interface
-Index: wpa_supplicant-0.6.3/wpa_supplicant/config_file.c
-===================================================================
---- wpa_supplicant-0.6.3.orig/wpa_supplicant/config_file.c 2008-02-23 03:45:24.000000000 +0100
-+++ wpa_supplicant-0.6.3/wpa_supplicant/config_file.c 2008-07-10 15:59:38.000000000 +0200
-@@ -312,6 +312,13 @@
+--- a/wpa_supplicant/config_file.c
++++ b/wpa_supplicant/config_file.c
+@@ -313,6 +313,13 @@
return 0;
}
static int wpa_config_process_fast_reauth(struct wpa_config *config, char *pos)
{
-@@ -445,6 +452,9 @@
+@@ -446,6 +453,9 @@
if (os_strncmp(pos, "ap_scan=", 8) == 0)
return wpa_config_process_ap_scan(config, pos + 8);
if (os_strncmp(pos, "fast_reauth=", 12) == 0)
return wpa_config_process_fast_reauth(config, pos + 12);
-@@ -810,6 +820,8 @@
+@@ -819,6 +831,8 @@
fprintf(f, "eapol_version=%d\n", config->eapol_version);
if (config->ap_scan != DEFAULT_AP_SCAN)
fprintf(f, "ap_scan=%d\n", config->ap_scan);
if (config->fast_reauth != DEFAULT_FAST_REAUTH)
fprintf(f, "fast_reauth=%d\n", config->fast_reauth);
#ifdef EAP_TLS_OPENSSL
-Index: wpa_supplicant-0.6.3/wpa_supplicant/events.c
-===================================================================
---- wpa_supplicant-0.6.3.orig/wpa_supplicant/events.c 2008-07-10 13:27:03.000000000 +0200
-+++ wpa_supplicant-0.6.3/wpa_supplicant/events.c 2008-07-10 17:18:53.000000000 +0200
-@@ -555,6 +555,9 @@
+--- a/wpa_supplicant/events.c
++++ b/wpa_supplicant/events.c
+@@ -601,6 +601,9 @@
if (wpa_s->conf->ap_scan == 2 || wpa_s->disconnected)
return;
while (selected == NULL) {
for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
selected = wpa_supplicant_select_bss(
-@@ -594,13 +597,16 @@
+@@ -613,6 +616,7 @@
+ wpa_printf(MSG_DEBUG, "No APs found - clear blacklist "
+ "and try again");
+ wpa_blacklist_clear(wpa_s);
++ memset(&wpa_s->last_scan_results, 0, sizeof(wpa_s->last_scan_results));
+ } else if (selected == NULL) {
+ break;
+ }
+@@ -640,10 +644,12 @@
rsn_preauth_scan_results(wpa_s->wpa, wpa_s->scan_res);
} else {
wpa_printf(MSG_DEBUG, "No suitable AP found.");
- timeout = 5;
-+ timeout = 1;
++ timeout = 0;
goto req_scan;
}
return;
req_scan:
-+ memset(&wpa_s->last_scan_results, 0, sizeof(wpa_s->last_scan_results));
- if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1) {
- /*
- * Quick recovery if the initial scan results were not
-@@ -804,6 +810,9 @@
+@@ -847,6 +853,9 @@
}
if (wpa_s->wpa_state >= WPA_ASSOCIATED)
wpa_supplicant_req_scan(wpa_s, 0, 100000);
bssid = wpa_s->bssid;
if (os_memcmp(bssid, "\x00\x00\x00\x00\x00\x00", ETH_ALEN) == 0)
bssid = wpa_s->pending_bssid;
-Index: wpa_supplicant-0.6.3/wpa_supplicant/wpa_supplicant_i.h
-===================================================================
---- wpa_supplicant-0.6.3.orig/wpa_supplicant/wpa_supplicant_i.h 2008-07-10 15:03:56.000000000 +0200
-+++ wpa_supplicant-0.6.3/wpa_supplicant/wpa_supplicant_i.h 2008-07-10 15:16:17.000000000 +0200
+--- a/wpa_supplicant/wpa_supplicant_i.h
++++ b/wpa_supplicant/wpa_supplicant_i.h
@@ -334,6 +334,7 @@
- struct wpa_client_mlme mlme;
- int use_client_mlme;
- int driver_4way_handshake;
+ struct wpa_client_mlme mlme;
+ int use_client_mlme;
+ int driver_4way_handshake;
+ struct os_time last_scan_results;
- };
-
-
-@@ -381,6 +382,7 @@
+
+ int pending_mic_error_report;
+ int pending_mic_error_pairwise;
+@@ -385,6 +387,7 @@
/* scan.c */
void wpa_supplicant_req_scan(struct wpa_supplicant *wpa_s, int sec, int usec);
void wpa_supplicant_cancel_scan(struct wpa_supplicant *wpa_s);
/* events.c */
-Index: wpa_supplicant-0.6.3/wpa_supplicant/scan.c
-===================================================================
---- wpa_supplicant-0.6.3.orig/wpa_supplicant/scan.c 2008-07-10 13:27:03.000000000 +0200
-+++ wpa_supplicant-0.6.3/wpa_supplicant/scan.c 2008-07-10 16:24:31.000000000 +0200
+--- a/wpa_supplicant/scan.c
++++ b/wpa_supplicant/scan.c
@@ -40,6 +40,18 @@
wpa_supplicant_event(wpa_s, EVENT_ASSOC, &data);
}
wpa_s->scan_res_tried++;
wpa_printf(MSG_DEBUG, "Trying to get current scan results "
"first without requesting a new scan to speed up "
-Index: wpa_supplicant-0.6.3/wpa_supplicant/wpa_supplicant.c
-===================================================================
---- wpa_supplicant-0.6.3.orig/wpa_supplicant/wpa_supplicant.c 2008-07-10 14:41:16.000000000 +0200
-+++ wpa_supplicant-0.6.3/wpa_supplicant/wpa_supplicant.c 2008-07-10 18:45:59.000000000 +0200
-@@ -1417,6 +1417,9 @@
+--- a/wpa_supplicant/wpa_supplicant.c
++++ b/wpa_supplicant/wpa_supplicant.c
+@@ -1441,6 +1441,9 @@
{
struct wpa_supplicant *wpa_s = ctx;