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      1 /*
      2  * hostapd / P2P integration
      3  * Copyright (c) 2009-2010, Atheros Communications
      4  *
      5  * This software may be distributed under the terms of the BSD license.
      6  * See README for more details.
      7  */
      8 
      9 #include "utils/includes.h"
     10 
     11 #include "utils/common.h"
     12 #include "common/ieee802_11_defs.h"
     13 #include "p2p/p2p.h"
     14 #include "hostapd.h"
     15 #include "ap_config.h"
     16 #include "ap_drv_ops.h"
     17 #include "sta_info.h"
     18 #include "p2p_hostapd.h"
     19 
     20 
     21 #ifdef CONFIG_P2P
     22 
     23 int hostapd_p2p_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
     24 			    char *buf, size_t buflen)
     25 {
     26 	if (sta->p2p_ie == NULL)
     27 		return 0;
     28 
     29 	return p2p_ie_text(sta->p2p_ie, buf, buf + buflen);
     30 }
     31 
     32 
     33 int hostapd_p2p_set_noa(struct hostapd_data *hapd, u8 count, int start,
     34 			int duration)
     35 {
     36 	wpa_printf(MSG_DEBUG, "P2P: Set NoA parameters: count=%u start=%d "
     37 		   "duration=%d", count, start, duration);
     38 
     39 	if (count == 0) {
     40 		hapd->noa_enabled = 0;
     41 		hapd->noa_start = 0;
     42 		hapd->noa_duration = 0;
     43 	}
     44 
     45 	if (count != 255) {
     46 		wpa_printf(MSG_DEBUG, "P2P: Non-periodic NoA - set "
     47 			   "NoA parameters");
     48 		return hostapd_driver_set_noa(hapd, count, start, duration);
     49 	}
     50 
     51 	hapd->noa_enabled = 1;
     52 	hapd->noa_start = start;
     53 	hapd->noa_duration = duration;
     54 
     55 	if (hapd->num_sta_no_p2p == 0) {
     56 		wpa_printf(MSG_DEBUG, "P2P: No legacy STAs connected - update "
     57 			   "periodic NoA parameters");
     58 		return hostapd_driver_set_noa(hapd, count, start, duration);
     59 	}
     60 
     61 	wpa_printf(MSG_DEBUG, "P2P: Legacy STA(s) connected - do not enable "
     62 		   "periodic NoA");
     63 
     64 	return 0;
     65 }
     66 
     67 
     68 void hostapd_p2p_non_p2p_sta_connected(struct hostapd_data *hapd)
     69 {
     70 	wpa_printf(MSG_DEBUG, "P2P: First non-P2P device connected");
     71 
     72 	if (hapd->noa_enabled) {
     73 		wpa_printf(MSG_DEBUG, "P2P: Disable periodic NoA");
     74 		hostapd_driver_set_noa(hapd, 0, 0, 0);
     75 	}
     76 }
     77 
     78 
     79 void hostapd_p2p_non_p2p_sta_disconnected(struct hostapd_data *hapd)
     80 {
     81 	wpa_printf(MSG_DEBUG, "P2P: Last non-P2P device disconnected");
     82 
     83 	if (hapd->noa_enabled) {
     84 		wpa_printf(MSG_DEBUG, "P2P: Enable periodic NoA");
     85 		hostapd_driver_set_noa(hapd, 255, hapd->noa_start,
     86 				       hapd->noa_duration);
     87 	}
     88 }
     89 
     90 #endif /* CONFIG_P2P */
     91 
     92 
     93 #ifdef CONFIG_P2P_MANAGER
     94 u8 * hostapd_eid_p2p_manage(struct hostapd_data *hapd, u8 *eid)
     95 {
     96 	u8 bitmap;
     97 	*eid++ = WLAN_EID_VENDOR_SPECIFIC;
     98 	*eid++ = 4 + 3 + 1;
     99 	WPA_PUT_BE32(eid, P2P_IE_VENDOR_TYPE);
    100 	eid += 4;
    101 
    102 	*eid++ = P2P_ATTR_MANAGEABILITY;
    103 	WPA_PUT_LE16(eid, 1);
    104 	eid += 2;
    105 	bitmap = P2P_MAN_DEVICE_MANAGEMENT;
    106 	if (hapd->conf->p2p & P2P_ALLOW_CROSS_CONNECTION)
    107 		bitmap |= P2P_MAN_CROSS_CONNECTION_PERMITTED;
    108 	bitmap |= P2P_MAN_COEXISTENCE_OPTIONAL;
    109 	*eid++ = bitmap;
    110 
    111 	return eid;
    112 }
    113 #endif /* CONFIG_P2P_MANAGER */
    114