p2p_hostapd.c revision 8d520ff1dc2da35cdca849e982051b86468016d8 
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
29int 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
39int 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
74void 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
85void 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
100u8 * 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