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Document wpa_s->scan_req

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Use an enum with documented values to make it easier to understand how
wpa_s->scan_req is used.

Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2012-11-25 15:55:32 +02:00
parent 215ae884d6
commit 4115303bbe
8 changed files with 46 additions and 17 deletions
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2
wpa_supplicant/autoscan.c
View file

@ -36,7 +36,7 @@ static const struct autoscan_ops * autoscan_modules[] = {
static void request_scan(struct wpa_supplicant *wpa_s)
{
wpa_s->scan_req = 2;
wpa_s->scan_req = MANUAL_SCAN_REQ;
if (wpa_supplicant_req_sched_scan(wpa_s))
wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval, 0);

4
wpa_supplicant/ctrl_iface.c
View file

@ -5094,14 +5094,14 @@ char * wpa_supplicant_ctrl_iface_process(struct wpa_supplicant *wpa_s,
((wpa_s->wpa_state <= WPA_SCANNING) ||
(wpa_s->wpa_state == WPA_COMPLETED))) {
wpa_s->normal_scans = 0;
wpa_s->scan_req = 2;
wpa_s->scan_req = MANUAL_SCAN_REQ;
wpa_supplicant_req_scan(wpa_s, 0, 0);
} else if (wpa_s->sched_scanning) {
wpa_printf(MSG_DEBUG, "Stop ongoing "
"sched_scan to allow requested "
"full scan to proceed");
wpa_supplicant_cancel_sched_scan(wpa_s);
wpa_s->scan_req = 2;
wpa_s->scan_req = MANUAL_SCAN_REQ;
wpa_supplicant_req_scan(wpa_s, 0, 0);
} else {
wpa_printf(MSG_DEBUG, "Ongoing scan action - "

2
wpa_supplicant/dbus/dbus_new_handlers.c
View file

@ -1313,7 +1313,7 @@ DBusMessage * wpas_dbus_handler_scan(DBusMessage *message,
} else if (params.freqs && params.freqs[0]) {
wpa_supplicant_trigger_scan(wpa_s, &params);
} else {
wpa_s->scan_req = 2;
wpa_s->scan_req = MANUAL_SCAN_REQ;
wpa_supplicant_req_scan(wpa_s, 0, 0);
}
} else if (!os_strcmp(type, "active")) {

2
wpa_supplicant/dbus/dbus_old_handlers.c
View file

@ -331,7 +331,7 @@ DBusMessage * wpas_dbus_global_set_debugparams(DBusMessage *message,
DBusMessage * wpas_dbus_iface_scan(DBusMessage *message,
struct wpa_supplicant *wpa_s)
{
wpa_s->scan_req = 2;
wpa_s->scan_req = MANUAL_SCAN_REQ;
wpa_supplicant_req_scan(wpa_s, 0, 0);
return wpas_dbus_new_success_reply(message);
}

2
wpa_supplicant/interworking.c
View file

@ -1964,7 +1964,7 @@ int interworking_select(struct wpa_supplicant *wpa_s, int auto_select)
wpa_printf(MSG_DEBUG, "Interworking: Start scan for network "
"selection");
wpa_s->scan_res_handler = interworking_scan_res_handler;
wpa_s->scan_req = 2;
wpa_s->scan_req = MANUAL_SCAN_REQ;
wpa_supplicant_req_scan(wpa_s, 0, 0);
return 0;

15
wpa_supplicant/scan.c
View file

@ -505,7 +505,8 @@ static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct wpa_ssid *ssid;
int scan_req = 0, ret;
enum scan_req_type scan_req = NORMAL_SCAN_REQ;
int ret;
struct wpabuf *extra_ie = NULL;
struct wpa_driver_scan_params params;
struct wpa_driver_scan_params *scan_params;
@ -517,14 +518,14 @@ static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
return;
}
if (wpa_s->disconnected && !wpa_s->scan_req) {
if (wpa_s->disconnected && wpa_s->scan_req == NORMAL_SCAN_REQ) {
wpa_dbg(wpa_s, MSG_DEBUG, "Disconnected - do not scan");
wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
return;
}
if (!wpa_supplicant_enabled_networks(wpa_s) &&
!wpa_s->scan_req) {
wpa_s->scan_req == NORMAL_SCAN_REQ) {
wpa_dbg(wpa_s, MSG_DEBUG, "No enabled networks - do not scan");
wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
#ifdef CONFIG_P2P
@ -572,7 +573,7 @@ static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
}
scan_req = wpa_s->scan_req;
wpa_s->scan_req = 0;
wpa_s->scan_req = NORMAL_SCAN_REQ;
os_memset(&params, 0, sizeof(params));
@ -589,7 +590,7 @@ static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
goto scan;
}
if (scan_req != 2 && wpa_s->connect_without_scan) {
if (scan_req != MANUAL_SCAN_REQ && wpa_s->connect_without_scan) {
for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
if (ssid == wpa_s->connect_without_scan)
break;
@ -627,7 +628,7 @@ static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
}
}
if (scan_req != 2 && wpa_s->conf->ap_scan == 2) {
if (scan_req != MANUAL_SCAN_REQ && wpa_s->conf->ap_scan == 2) {
wpa_s->connect_without_scan = NULL;
wpa_s->prev_scan_wildcard = 0;
wpa_supplicant_assoc_try(wpa_s, ssid);
@ -762,7 +763,7 @@ scan:
* station interface when we are not configured to prefer station
* connection and a concurrent operation is already in process.
*/
if (wpa_s->scan_for_connection && !scan_req &&
if (wpa_s->scan_for_connection && scan_req == NORMAL_SCAN_REQ &&
!scan_params->freqs && !params.freqs &&
wpas_is_p2p_prioritized(wpa_s) &&
!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) &&

4
wpa_supplicant/wpa_supplicant.c
View file

@ -1322,7 +1322,7 @@ void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
(ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
/* Use ap_scan==1 style network selection to find the network
*/
wpa_s->scan_req = 2;
wpa_s->scan_req = MANUAL_SCAN_REQ;
wpa_s->reassociate = 1;
wpa_supplicant_req_scan(wpa_s, 0, 0);
return;
@ -2413,7 +2413,7 @@ static struct wpa_supplicant * wpa_supplicant_alloc(void)
wpa_s = os_zalloc(sizeof(*wpa_s));
if (wpa_s == NULL)
return NULL;
wpa_s->scan_req = 1;
wpa_s->scan_req = INITIAL_SCAN_REQ;
wpa_s->scan_interval = 5;
wpa_s->new_connection = 1;
wpa_s->parent = wpa_s;

32
wpa_supplicant/wpa_supplicant_i.h
View file

@ -397,8 +397,36 @@ struct wpa_supplicant {
struct wpa_blacklist *blacklist;
int scan_req; /* manual scan request; this forces a scan even if there
* are no enabled networks in the configuration */
/**
* scan_req - Type of the scan request
*/
enum scan_req_type {
/**
* NORMAL_SCAN_REQ - Normal scan request
*
* This is used for scans initiated by wpa_supplicant to find an
* AP for a connection.
*/
NORMAL_SCAN_REQ,
/**
* INITIAL_SCAN_REQ - Initial scan request
*
* This is used for the first scan on an interface to force at
* least one scan to be run even if the configuration does not
* include any enabled networks.
*/
INITIAL_SCAN_REQ,
/**
* MANUAL_SCAN_REQ - Manual scan request
*
* This is used for scans where the user request a scan or
* a specific wpa_supplicant operation (e.g., WPS) requires scan
* to be run.
*/
MANUAL_SCAN_REQ
} scan_req;
int scan_runs; /* number of scan runs since WPS was started */
int *next_scan_freqs;
int scan_interval; /* time in sec between scans to find suitable AP */