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WPS: Split eapol_cb reconnect to a separate code path

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Use eloop timeout to run the reconnect command after eapol_cb has
returned. This reduces stack use and can simplify the driver
command/event sequence by allowing the disconnection events from the
provisioning step to be processed before starting the actual data
connection.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2014-04-13 11:47:03 +03:00
parent 8c7559ee8f
commit 150fd0b2b5
1 changed files with 32 additions and 3 deletions
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35
wpa_supplicant/wps_supplicant.c
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@ -52,6 +52,25 @@ static void wpas_wps_clear_ap_info(struct wpa_supplicant *wpa_s)
}
static void wpas_wps_assoc_with_cred(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
int use_fast_assoc = timeout_ctx != NULL;
wpa_printf(MSG_DEBUG, "WPS: Continuing association after eapol_cb");
if (!use_fast_assoc ||
wpa_supplicant_fast_associate(wpa_s) != 1)
wpa_supplicant_req_scan(wpa_s, 0, 0);
}
static void wpas_wps_assoc_with_cred_cancel(struct wpa_supplicant *wpa_s)
{
eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *) 0);
eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *) 1);
}
int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
{
#ifdef CONFIG_P2P
@ -124,9 +143,18 @@ int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
wpabuf_free(wps);
}
if (!use_fast_assoc ||
wpa_supplicant_fast_associate(wpa_s) != 1)
wpa_supplicant_req_scan(wpa_s, 0, 0);
/*
* Complete the next step from an eloop timeout to allow pending
* driver events related to the disconnection to be processed
* first. This makes it less likely for disconnection event to
* cause problems with the following connection.
*/
wpa_printf(MSG_DEBUG, "WPS: Continue association from timeout");
wpas_wps_assoc_with_cred_cancel(wpa_s);
eloop_register_timeout(0, 10000,
wpas_wps_assoc_with_cred, wpa_s,
use_fast_assoc ? (void *) 1 :
(void *) 0);
return 1;
}
@ -1431,6 +1459,7 @@ static void wpas_wps_nfc_clear(struct wps_context *wps)
void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
{
wpas_wps_assoc_with_cred_cancel(wpa_s);
eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);