P2P: Disallow GO CS immediately after GO Negotiation or invitation

[mech_eap.git] / wpa_supplicant / p2p_supplicant.c

diff --git a/wpa_supplicant/p2p_supplicant.c b/wpa_supplicant/p2p_supplicant.c
index 2d869e0..0ac7690 100644 (file)
--- a/wpa_supplicant/p2p_supplicant.c
+++ b/wpa_supplicant/p2p_supplicant.c
@@ -91,6 +91,12 @@
 
 #define P2P_MGMT_DEVICE_PREFIX         "p2p-dev-"
 
+/*
+ * How many seconds to wait to re-attempt to move GOs, in case previous attempt
+ * was not possible.
+ */
+#define P2P_RECONSIDER_GO_MOVE_DELAY 30
+
 enum p2p_group_removal_reason {
        P2P_GROUP_REMOVAL_UNKNOWN,
        P2P_GROUP_REMOVAL_SILENT,
@@ -143,6 +149,7 @@ static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq);
 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
                                         struct wpa_used_freq_data *freqs,
                                         unsigned int num);
+static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx);
 
 
 /*
@@ -892,6 +899,7 @@ static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 
        wpa_s->p2p_in_invitation = 0;
        eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
+       eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 
        /*
         * Make sure wait for the first client does not remain active after the
@@ -8469,6 +8477,25 @@ static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
 }
 
 
+static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
+{
+       struct wpa_supplicant *wpa_s = eloop_ctx;
+       struct wpa_used_freq_data *freqs = NULL;
+       unsigned int num = wpa_s->num_multichan_concurrent;
+
+       freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
+       if (!freqs)
+               return;
+
+       num = get_shared_radio_freqs_data(wpa_s, freqs, num);
+
+       /* Previous attempt to move a GO was not possible -- try again. */
+       wpas_p2p_consider_moving_gos(wpa_s, freqs, num);
+
+       os_free(freqs);
+}
+
+
 /*
  * Consider moving a GO from its currently used frequency:
  * 1. It is possible that due to regulatory consideration the frequency
@@ -8531,6 +8558,17 @@ static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
                wpa_dbg(wpa_s, MSG_DEBUG,
                        "P2P: Cancel a GO move from freq=%d MHz", freq);
                eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
+
+               if (wpas_p2p_in_progress(wpa_s)) {
+                       wpa_dbg(wpa_s, MSG_DEBUG,
+                               "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
+                       eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
+                                            wpa_s, NULL);
+                       eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
+                                              wpas_p2p_reconsider_moving_go,
+                                              wpa_s, NULL);
+                       return;
+               }
        }
 
        if (!invalid_freq && (!policy_move || flags != 0)) {
@@ -8557,6 +8595,9 @@ static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
 {
        struct wpa_supplicant *ifs;
 
+       eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
+                            NULL);
+
        /*
         * Travers all the radio interfaces, and for each GO interface, check
         * if there is a need to move the GO from the frequency it is using,