hostapd: Add wowlan_triggers config param
New kernels in wiphy_suspend() will call cfg80211_leave_all()
that will eventually end up in cfg80211_stop_ap() unless
wowlan_triggers were set.
Bug: 17269024
Change-Id: I14d2191eda090cd86cabe1e5f059975fdf2f69e8
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/src/common/wpa_common.c b/src/common/wpa_common.c
index 7aeb706..998a51a 100644
--- a/src/common/wpa_common.c
+++ b/src/common/wpa_common.c
@@ -14,6 +14,7 @@
#include "crypto/sha256.h"
#include "crypto/aes_wrap.h"
#include "crypto/crypto.h"
+#include "drivers/driver.h"
#include "ieee802_11_defs.h"
#include "defs.h"
#include "wpa_common.h"
@@ -1496,3 +1497,78 @@
return WPA_CIPHER_CCMP_256;
return WPA_CIPHER_CCMP;
}
+
+
+static int wpa_check_wowlan_trigger(const char *start, const char *trigger,
+ int capa_trigger, u8 *param_trigger)
+{
+ if (os_strcmp(start, trigger) != 0)
+ return 0;
+ if (!capa_trigger)
+ return 0;
+
+ *param_trigger = 1;
+ return 1;
+}
+
+
+struct wowlan_triggers *wpa_get_wowlan_triggers(const char *wowlan_triggers,
+ struct wpa_driver_capa *capa)
+{
+ struct wowlan_triggers *triggers;
+ char *start, *end, *buf;
+ int last;
+
+ if (!wowlan_triggers)
+ return NULL;
+
+ buf = os_strdup(wowlan_triggers);
+ if (buf == NULL)
+ return NULL;
+
+ triggers = os_zalloc(sizeof(*triggers));
+ if (triggers == NULL)
+ goto out;
+
+#define CHECK_TRIGGER(trigger) \
+ wpa_check_wowlan_trigger(start, #trigger, \
+ capa->wowlan_triggers.trigger, \
+ &triggers->trigger)
+
+ start = buf;
+ while (*start != '\0') {
+ while (isblank(*start))
+ start++;
+ if (*start == '\0')
+ break;
+ end = start;
+ while (!isblank(*end) && *end != '\0')
+ end++;
+ last = *end == '\0';
+ *end = '\0';
+
+ if (!CHECK_TRIGGER(any) &&
+ !CHECK_TRIGGER(disconnect) &&
+ !CHECK_TRIGGER(magic_pkt) &&
+ !CHECK_TRIGGER(gtk_rekey_failure) &&
+ !CHECK_TRIGGER(eap_identity_req) &&
+ !CHECK_TRIGGER(four_way_handshake) &&
+ !CHECK_TRIGGER(rfkill_release)) {
+ wpa_printf(MSG_DEBUG,
+ "Unknown/unsupported wowlan trigger '%s'",
+ start);
+ os_free(triggers);
+ triggers = NULL;
+ goto out;
+ }
+
+ if (last)
+ break;
+ start = end + 1;
+ }
+#undef CHECK_TRIGGER
+
+out:
+ os_free(buf);
+ return triggers;
+}