From d0df64373561a8804c35e1900e5857096f5b73d8 Mon Sep 17 00:00:00 2001
From: Ilan Peer <ilan.peer@intel.com>
Date: Thu, 24 Apr 2014 08:45:40 +0300
Subject: [PATCH] wpa_supplicant: Call frequency conflict handling during auth

Previously, the frequency conflict was handled only during the
association flow. However, some drivers, e.g., mac80211 based
drivers, will fail an authentication request in case that there
are no available channels for use (as they might be used by
other interfaces), and thus the frequency conflict resolution
is never called.

Fix this by calling frequency conflict resolution during
authentication (SME-in-wpa_supplicant) as well.

In addition, get the shared radio frequency from the wpa_s context in
both the SME-in-driver and SME-in-wpa_supplicant cases and not from the
driver.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
---
 wpa_supplicant/sme.c            | 26 ++++++++++++++++++++++++++
 wpa_supplicant/wpa_supplicant.c |  8 +++++---
 2 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/wpa_supplicant/sme.c b/wpa_supplicant/sme.c
index 2538ba0ce..9b6667a62 100644
--- a/wpa_supplicant/sme.c
+++ b/wpa_supplicant/sme.c
@@ -416,6 +416,32 @@ static void sme_send_authentication(struct wpa_supplicant *wpa_s,
 	if (old_ssid != wpa_s->current_ssid)
 		wpas_notify_network_changed(wpa_s);
 
+#ifdef CONFIG_P2P
+	/*
+	 * If multi-channel concurrency is not supported, check for any
+	 * frequency conflict. In case of any frequency conflict, remove the
+	 * least prioritized connection.
+	 */
+	if (wpa_s->num_multichan_concurrent < 2) {
+		int freq, num;
+		num = get_shared_radio_freqs(wpa_s, &freq, 1);
+		if (num > 0 && freq > 0 && freq != params.freq) {
+			wpa_printf(MSG_DEBUG,
+				   "Conflicting frequency found (%d != %d)",
+				   freq, params.freq);
+			if (wpas_p2p_handle_frequency_conflicts(wpa_s,
+								params.freq,
+								ssid) < 0) {
+				wpas_connection_failed(wpa_s, bss->bssid);
+				wpa_supplicant_mark_disassoc(wpa_s);
+				wpabuf_free(resp);
+				wpas_connect_work_done(wpa_s);
+				return;
+			}
+		}
+	}
+#endif /* CONFIG_P2P */
+
 	wpa_s->sme.auth_alg = params.auth_alg;
 	if (wpa_drv_authenticate(wpa_s, &params) < 0) {
 		wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
diff --git a/wpa_supplicant/wpa_supplicant.c b/wpa_supplicant/wpa_supplicant.c
index 2cf595f71..af7b847b8 100644
--- a/wpa_supplicant/wpa_supplicant.c
+++ b/wpa_supplicant/wpa_supplicant.c
@@ -1822,9 +1822,11 @@ static void wpas_start_assoc_cb(struct wpa_radio_work *work, int deinit)
 	 * least prioritized connection.
 	 */
 	if (wpa_s->num_multichan_concurrent < 2) {
-		int freq = wpa_drv_shared_freq(wpa_s);
-		if (freq > 0 && freq != params.freq) {
-			wpa_printf(MSG_DEBUG, "Shared interface with conflicting frequency found (%d != %d)",
+		int freq, num;
+		num = get_shared_radio_freqs(wpa_s, &freq, 1);
+		if (num > 0 && freq > 0 && freq != params.freq) {
+			wpa_printf(MSG_DEBUG,
+				   "Assoc conflicting freq found (%d != %d)",
 				   freq, params.freq);
 			if (wpas_p2p_handle_frequency_conflicts(wpa_s,
 								params.freq,