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 
hostapd_p2p_get_mib_sta(struct hostapd_data * hapd,struct sta_info * sta,char * buf,size_t buflen)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 
hostapd_p2p_set_noa(struct hostapd_data * hapd,u8 count,int start,int duration)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 
hostapd_p2p_non_p2p_sta_connected(struct hostapd_data * hapd)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 
hostapd_p2p_non_p2p_sta_disconnected(struct hostapd_data * hapd)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
hostapd_eid_p2p_manage(struct hostapd_data * hapd,u8 * eid)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