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      1 /*
      2  * hostapd / P2P integration
      3  * Copyright (c) 2009-2010, Atheros Communications
      4  *
      5  * This program is free software; you can redistribute it and/or modify
      6  * it under the terms of the GNU General Public License version 2 as
      7  * published by the Free Software Foundation.
      8  *
      9  * Alternatively, this software may be distributed under the terms of BSD
     10  * license.
     11  *
     12  * See README and COPYING for more details.
     13  */
     14 
     15 #include "utils/includes.h"
     16 
     17 #include "utils/common.h"
     18 #include "common/ieee802_11_defs.h"
     19 #include "p2p/p2p.h"
     20 #include "hostapd.h"
     21 #include "ap_config.h"
     22 #include "ap_drv_ops.h"
     23 #include "sta_info.h"
     24 #include "p2p_hostapd.h"
     25 
     26 
     27 #ifdef CONFIG_P2P
     28 
     29 int hostapd_p2p_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
     30 			    char *buf, size_t buflen)
     31 {
     32 	if (sta->p2p_ie == NULL)
     33 		return 0;
     34 
     35 	return p2p_ie_text(sta->p2p_ie, buf, buf + buflen);
     36 }
     37 
     38 
     39 int hostapd_p2p_set_noa(struct hostapd_data *hapd, u8 count, int start,
     40 			int duration)
     41 {
     42 	wpa_printf(MSG_DEBUG, "P2P: Set NoA parameters: count=%u start=%d "
     43 		   "duration=%d", count, start, duration);
     44 
     45 	if (count == 0) {
     46 		hapd->noa_enabled = 0;
     47 		hapd->noa_start = 0;
     48 		hapd->noa_duration = 0;
     49 	}
     50 
     51 	if (count != 255) {
     52 		wpa_printf(MSG_DEBUG, "P2P: Non-periodic NoA - set "
     53 			   "NoA parameters");
     54 		return hostapd_driver_set_noa(hapd, count, start, duration);
     55 	}
     56 
     57 	hapd->noa_enabled = 1;
     58 	hapd->noa_start = start;
     59 	hapd->noa_duration = duration;
     60 
     61 	if (hapd->num_sta_no_p2p == 0) {
     62 		wpa_printf(MSG_DEBUG, "P2P: No legacy STAs connected - update "
     63 			   "periodic NoA parameters");
     64 		return hostapd_driver_set_noa(hapd, count, start, duration);
     65 	}
     66 
     67 	wpa_printf(MSG_DEBUG, "P2P: Legacy STA(s) connected - do not enable "
     68 		   "periodic NoA");
     69 
     70 	return 0;
     71 }
     72 
     73 
     74 void hostapd_p2p_non_p2p_sta_connected(struct hostapd_data *hapd)
     75 {
     76 	wpa_printf(MSG_DEBUG, "P2P: First non-P2P device connected");
     77 
     78 	if (hapd->noa_enabled) {
     79 		wpa_printf(MSG_DEBUG, "P2P: Disable periodic NoA");
     80 		hostapd_driver_set_noa(hapd, 0, 0, 0);
     81 	}
     82 }
     83 
     84 
     85 void hostapd_p2p_non_p2p_sta_disconnected(struct hostapd_data *hapd)
     86 {
     87 	wpa_printf(MSG_DEBUG, "P2P: Last non-P2P device disconnected");
     88 
     89 	if (hapd->noa_enabled) {
     90 		wpa_printf(MSG_DEBUG, "P2P: Enable periodic NoA");
     91 		hostapd_driver_set_noa(hapd, 255, hapd->noa_start,
     92 				       hapd->noa_duration);
     93 	}
     94 }
     95 
     96 #endif /* CONFIG_P2P */
     97 
     98 
     99 #ifdef CONFIG_P2P_MANAGER
    100 u8 * hostapd_eid_p2p_manage(struct hostapd_data *hapd, u8 *eid)
    101 {
    102 	u8 bitmap;
    103 	*eid++ = WLAN_EID_VENDOR_SPECIFIC;
    104 	*eid++ = 4 + 3 + 1;
    105 	WPA_PUT_BE24(eid, OUI_WFA);
    106 	eid += 3;
    107 	*eid++ = P2P_OUI_TYPE;
    108 
    109 	*eid++ = P2P_ATTR_MANAGEABILITY;
    110 	WPA_PUT_LE16(eid, 1);
    111 	eid += 2;
    112 	bitmap = P2P_MAN_DEVICE_MANAGEMENT;
    113 	if (hapd->conf->p2p & P2P_ALLOW_CROSS_CONNECTION)
    114 		bitmap |= P2P_MAN_CROSS_CONNECTION_PERMITTED;
    115 	bitmap |= P2P_MAN_COEXISTENCE_OPTIONAL;
    116 	*eid++ = bitmap;
    117 
    118 	return eid;
    119 }
    120 #endif /* CONFIG_P2P_MANAGER */
    121