src/ap/p2p_hostapd.c

   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 */