P2P: Add mechanism for updating P2P channel list based on driver events
[libeap.git] / wpa_supplicant / p2p_supplicant.c
index efe5b60..f57e50c 100644 (file)
@@ -700,13 +700,14 @@ static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
                                    struct p2p_go_neg_results *res)
 {
+       wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
+                  MAC2STR(res->peer_interface_addr));
        wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
                          res->ssid, res->ssid_len);
        wpa_supplicant_ap_deinit(wpa_s);
        wpas_copy_go_neg_results(wpa_s, res);
        if (res->wps_method == WPS_PBC)
-               wpas_wps_start_pbc(wpa_s, NULL /* res->peer_interface_addr */,
-                                  1);
+               wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
        else {
                u16 dev_pw_id = DEV_PW_DEFAULT;
                if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
@@ -1021,7 +1022,7 @@ static int wpas_start_listen(void *ctx, unsigned int freq,
 {
        struct wpa_supplicant *wpa_s = ctx;
 
-       wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie);
+       wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
 
        if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
@@ -1048,7 +1049,7 @@ static int wpas_start_listen(void *ctx, unsigned int freq,
 static void wpas_stop_listen(void *ctx)
 {
        struct wpa_supplicant *wpa_s = ctx;
-       if (wpa_s->off_channel_freq) {
+       if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
                wpa_drv_cancel_remain_on_channel(wpa_s);
                wpa_s->off_channel_freq = 0;
                wpa_s->roc_waiting_drv_freq = 0;
@@ -1835,7 +1836,7 @@ static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
                if (s) {
                        wpas_p2p_group_add_persistent(
                                wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0);
-               } else {
+               } else if (bssid) {
                        wpas_p2p_join(wpa_s, bssid, go_dev_addr,
                                      wpa_s->p2p_wps_method);
                }
@@ -1904,151 +1905,153 @@ static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
 }
 
 
+static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
+                                    struct p2p_channels *chan)
+{
+       int i, cla = 0;
+
+       wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
+                  "band");
+
+       /* Operating class 81 - 2.4 GHz band channels 1..13 */
+       chan->reg_class[cla].reg_class = 81;
+       chan->reg_class[cla].channels = 11;
+       for (i = 0; i < 11; i++)
+               chan->reg_class[cla].channel[i] = i + 1;
+       cla++;
+
+       wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
+                  "band");
+
+       /* Operating class 115 - 5 GHz, channels 36-48 */
+       chan->reg_class[cla].reg_class = 115;
+       chan->reg_class[cla].channels = 4;
+       chan->reg_class[cla].channel[0] = 36;
+       chan->reg_class[cla].channel[1] = 40;
+       chan->reg_class[cla].channel[2] = 44;
+       chan->reg_class[cla].channel[3] = 48;
+       cla++;
+
+       wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
+                  "band");
+
+       /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
+       chan->reg_class[cla].reg_class = 124;
+       chan->reg_class[cla].channels = 4;
+       chan->reg_class[cla].channel[0] = 149;
+       chan->reg_class[cla].channel[1] = 153;
+       chan->reg_class[cla].channel[2] = 157;
+       chan->reg_class[cla].channel[3] = 161;
+       cla++;
+
+       chan->reg_classes = cla;
+       return 0;
+}
+
+
+static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
+                                         u16 num_modes,
+                                         enum hostapd_hw_mode mode)
+{
+       u16 i;
+
+       for (i = 0; i < num_modes; i++) {
+               if (modes[i].mode == mode)
+                       return &modes[i];
+       }
+
+       return NULL;
+}
+
+
+static int has_channel(struct hostapd_hw_modes *mode, u8 chan)
+{
+       int i;
+
+       for (i = 0; i < mode->num_channels; i++) {
+               if (mode->channels[i].chan == chan) {
+                       return !(mode->channels[i].flag &
+                                (HOSTAPD_CHAN_DISABLED |
+                                 HOSTAPD_CHAN_PASSIVE_SCAN |
+                                 HOSTAPD_CHAN_NO_IBSS |
+                                 HOSTAPD_CHAN_RADAR));
+               }
+       }
+
+       return 0;
+}
+
+
+struct p2p_oper_class_map {
+       enum hostapd_hw_mode mode;
+       u8 op_class;
+       u8 min_chan;
+       u8 max_chan;
+       u8 inc;
+};
+
 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
-                                  struct p2p_config *p2p)
+                                  struct p2p_channels *chan)
 {
-       struct hostapd_hw_modes *modes;
+       struct hostapd_hw_modes *modes, *mode;
        u16 num_modes, flags;
-       int i, cla;
-       int band24 = 0, band5_low = 0, band5_high = 0;
-
-       /* TODO: more detailed selection of channels within reg_class based on
-        * driver capabilities */
+       int cla, op;
+       struct p2p_oper_class_map op_class[] = {
+               { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1 },
+               { HOSTAPD_MODE_IEEE80211G, 82, 14, 14, 1 },
+               { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4 },
+               { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4 },
+#if 0 /* TODO: 40 MHz channels */
+               { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1 },
+               { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1 },
+               { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8 },
+               { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8 },
+               { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8 },
+               { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8 },
+#endif
+               { -1, 0, 0, 0, 0 }
+       };
 
        modes = wpa_drv_get_hw_feature_data(wpa_s, &num_modes, &flags);
        if (modes == NULL) {
                wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
                           "of all supported channels; assume dualband "
                           "support");
-               band24 = band5_low = band5_high = 1;
-       } else {
-               for (i = 0; i < num_modes; i++) {
-                       struct hostapd_hw_modes *mode;
-                       mode = &modes[i];
-                       if (mode->mode == HOSTAPD_MODE_IEEE80211G) {
-                               band24 = 1;
-                       } else if (mode->mode == HOSTAPD_MODE_IEEE80211A) {
-                               int j;
-                               for (j = 0; j < mode->num_channels; j++) {
-                                       struct hostapd_channel_data *ch;
-                                       ch = &mode->channels[j];
-                                       if (ch->chan == 36)
-                                               band5_low = 1;
-                                       else if (ch->chan == 157)
-                                               band5_high = 1;
-                               }
-                       }
-               }
+               return wpas_p2p_default_channels(wpa_s, chan);
        }
 
        cla = 0;
 
-       if (band24) {
-               wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for "
-                          "2.4 GHz band");
-
-               /* Operating class 81 - 2.4 GHz band channels 1..13 */
-               p2p->channels.reg_class[cla].reg_class = 81;
-#if 0
-               p2p->channels.reg_class[cla].channels = 13;
-               for (i = 0; i < 13; i++)
-                       p2p->channels.reg_class[cla].channel[i] = i + 1;
-#else
-               p2p->channels.reg_class[cla].channels = 11;
-               for (i = 0; i < 11; i++)
-                       p2p->channels.reg_class[cla].channel[i] = i + 1;
-#endif
-               cla++;
-
-#if 0
-               /* Operating class 82 - 2.4 GHz band channel 14 */
-               p2p->channels.reg_class[cla].reg_class = 82;
-               p2p->channels.reg_class[cla].channels = 1;
-               p2p->channels.reg_class[cla].channel[0] = 14;
-               cla++;
-#endif
-
-#if 0
-               /* Operating class 83 - 2.4 GHz band channels 1..9; 40 MHz */
-               p2p->channels.reg_class[cla].reg_class = 83;
-               p2p->channels.reg_class[cla].channels = 9;
-               for (i = 0; i < 9; i++)
-                       p2p->channels.reg_class[cla].channel[i] = i + 1;
-               cla++;
-
-               /* Operating class 84 - 2.4 GHz band channels 5..13; 40 MHz */
-               p2p->channels.reg_class[cla].reg_class = 84;
-               p2p->channels.reg_class[cla].channels = 9;
-               for (i = 0; i < 9; i++)
-                       p2p->channels.reg_class[cla].channel[i] = i + 5;
-               cla++;
-#endif
-       }
-
-       if (band5_low) {
-               wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for "
-                          "lower 5 GHz band");
-
-               /* Operating class 115 - 5 GHz, channels 36-48 */
-               p2p->channels.reg_class[cla].reg_class = 115;
-               p2p->channels.reg_class[cla].channels = 4;
-               p2p->channels.reg_class[cla].channel[0] = 36;
-               p2p->channels.reg_class[cla].channel[1] = 40;
-               p2p->channels.reg_class[cla].channel[2] = 44;
-               p2p->channels.reg_class[cla].channel[3] = 48;
-               cla++;
-
-#if 0
-               /* Operating class 116 - 5 GHz, channels 36,44; 40 MHz */
-               p2p->channels.reg_class[cla].reg_class = 116;
-               p2p->channels.reg_class[cla].channels = 2;
-               p2p->channels.reg_class[cla].channel[0] = 36;
-               p2p->channels.reg_class[cla].channel[1] = 44;
-               cla++;
-
-               /* Operating class 117 - 5 GHz, channels 40,48; 40 MHz */
-               p2p->channels.reg_class[cla].reg_class = 117;
-               p2p->channels.reg_class[cla].channels = 2;
-               p2p->channels.reg_class[cla].channel[0] = 40;
-               p2p->channels.reg_class[cla].channel[1] = 48;
-               cla++;
-#endif
-       }
+       for (op = 0; op_class[op].op_class; op++) {
+               struct p2p_oper_class_map *o = &op_class[op];
+               u8 ch;
+               struct p2p_reg_class *reg = NULL;
 
-       if (band5_high) {
-               wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for "
-                          "higher 5 GHz band");
-
-               /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
-               p2p->channels.reg_class[cla].reg_class = 124;
-               p2p->channels.reg_class[cla].channels = 4;
-               p2p->channels.reg_class[cla].channel[0] = 149;
-               p2p->channels.reg_class[cla].channel[1] = 153;
-               p2p->channels.reg_class[cla].channel[2] = 157;
-               p2p->channels.reg_class[cla].channel[3] = 161;
-               cla++;
-
-#if 0
-               /* Operating class 126 - 5 GHz, channels 149,157; 40 MHz */
-               p2p->channels.reg_class[cla].reg_class = 126;
-               p2p->channels.reg_class[cla].channels = 2;
-               p2p->channels.reg_class[cla].channel[0] = 149;
-               p2p->channels.reg_class[cla].channel[1] = 157;
-               cla++;
-
-               /* Operating class 127 - 5 GHz, channels 153,161; 40 MHz */
-               p2p->channels.reg_class[cla].reg_class = 127;
-               p2p->channels.reg_class[cla].channels = 2;
-               p2p->channels.reg_class[cla].channel[0] = 153;
-               p2p->channels.reg_class[cla].channel[1] = 161;
-               cla++;
-#endif
+               mode = get_mode(modes, num_modes, o->mode);
+               if (mode == NULL)
+                       continue;
+               for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
+                       if (!has_channel(mode, ch))
+                               continue;
+                       if (reg == NULL) {
+                               wpa_printf(MSG_DEBUG, "P2P: Add operating "
+                                          "class %u", o->op_class);
+                               reg = &chan->reg_class[cla];
+                               cla++;
+                               reg->reg_class = o->op_class;
+                       }
+                       reg->channel[reg->channels] = ch;
+                       reg->channels++;
+               }
+               if (reg) {
+                       wpa_hexdump(MSG_DEBUG, "P2P: Channels",
+                                   reg->channel, reg->channels);
+               }
        }
 
-       p2p->channels.reg_classes = cla;
+       chan->reg_classes = cla;
 
-       if (modes)
-               ieee80211_sta_free_hw_features(modes, num_modes);
+       ieee80211_sta_free_hw_features(modes, num_modes);
 
        return 0;
 }
@@ -2160,7 +2163,7 @@ int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
        } else
                os_memcpy(p2p.country, "US\x04", 3);
 
-       if (wpas_p2p_setup_channels(wpa_s, &p2p)) {
+       if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
                wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
                           "channel list");
                return -1;
@@ -2201,6 +2204,8 @@ int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
                          p2p.ssid_postfix_len);
        }
 
+       p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
+
        global->p2p = p2p_init(&p2p);
        if (global->p2p == NULL)
                return -1;
@@ -2529,14 +2534,16 @@ static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
  *     initiating Group Owner negotiation
  * @go_intent: GO Intent or -1 to use default
  * @freq: Frequency for the group or 0 for auto-selection
- * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on failure
+ * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
+ *     failure, -2 on failure due to channel not currently available,
+ *     -3 if forced channel is not supported
  */
 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
                     const char *pin, enum p2p_wps_method wps_method,
                     int persistent_group, int join, int auth, int go_intent,
                     int freq)
 {
-       int force_freq = 0;
+       int force_freq = 0, oper_freq = 0;
        u8 bssid[ETH_ALEN];
        int ret = 0;
        enum wpa_driver_if_type iftype;
@@ -2582,21 +2589,52 @@ int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
                return ret;
        }
 
-       if (freq > 0)
-               force_freq = freq;
-       else if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
-                wpa_s->assoc_freq)
-               force_freq = wpa_s->assoc_freq;
+       if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
+           wpa_s->assoc_freq)
+               oper_freq = wpa_s->assoc_freq;
        else {
-               force_freq = wpa_drv_shared_freq(wpa_s);
-               if (force_freq < 0)
-                       force_freq = 0;
+               oper_freq = wpa_drv_shared_freq(wpa_s);
+               if (oper_freq < 0)
+                       oper_freq = 0;
        }
 
-       if (force_freq > 0) {
+       if (freq > 0) {
+               if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
+                       wpa_printf(MSG_DEBUG, "P2P: The forced channel "
+                                  "(%u MHz) is not supported for P2P uses",
+                                  freq);
+                       return -3;
+               }
+
+               if (oper_freq > 0 && freq != oper_freq &&
+                   !(wpa_s->drv_flags &
+                     WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
+                       wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
+                                  "on %u MHz while connected on another "
+                                  "channel (%u MHz)", freq, oper_freq);
+                       return -2;
+               }
+               wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
+                          "requested channel (%u MHz)", freq);
+               force_freq = freq;
+       } else if (oper_freq > 0 &&
+                  !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
+               if (!(wpa_s->drv_flags &
+                     WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
+                       wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
+                                  "while connected on non-P2P supported "
+                                  "channel (%u MHz)", oper_freq);
+                       return -2;
+               }
+               wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
+                          "(%u MHz) not available for P2P - try to use "
+                          "another channel", oper_freq);
+               force_freq = 0;
+       } else if (oper_freq > 0) {
                wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
                           "channel we are already using (%u MHz) on another "
-                          "interface", force_freq);
+                          "interface", oper_freq);
+               force_freq = oper_freq;
        }
 
        wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
@@ -2824,6 +2862,13 @@ int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
 {
        struct p2p_go_neg_results params;
 
+       if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
+               wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
+                          "(%u MHz) is not supported for P2P uses",
+                          freq);
+               return -1;
+       }
+
        wpas_p2p_init_go_params(wpa_s, &params, freq);
        p2p_go_params(wpa_s->global->p2p, &params);
        params.persistent_group = persistent_group;
@@ -3395,6 +3440,9 @@ void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
                                     os_strlen(wpa_s->conf->p2p_ssid_postfix) :
                                     0);
        }
+
+       if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
+               p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
 }
 
 
@@ -3551,3 +3599,21 @@ int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
        wpas_group_formation_completed(wpa_s, 0);
        return 1;
 }
+
+
+void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
+{
+       struct p2p_channels chan;
+
+       if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
+               return;
+
+       os_memset(&chan, 0, sizeof(chan));
+       if (wpas_p2p_setup_channels(wpa_s, &chan)) {
+               wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
+                          "channel list");
+               return;
+       }
+
+       p2p_update_channel_list(wpa_s->global->p2p, &chan);
+}