src/ap/p2p_hostapd.c

   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_BE24(eid, OUI_WFA);
 100         eid += 3;
 101         *eid++ = P2P_OUI_TYPE;
 102
 103         *eid++ = P2P_ATTR_MANAGEABILITY;
 104         WPA_PUT_LE16(eid, 1);
 105         eid += 2;
 106         bitmap = P2P_MAN_DEVICE_MANAGEMENT;
 107         if (hapd->conf->p2p & P2P_ALLOW_CROSS_CONNECTION)
 108                 bitmap |= P2P_MAN_CROSS_CONNECTION_PERMITTED;
 109         bitmap |= P2P_MAN_COEXISTENCE_OPTIONAL;
 110         *eid++ = bitmap;
 111
 112         return eid;
 113 }
 114 #endif /* CONFIG_P2P_MANAGER */