132 lines
3.4 KiB
C
132 lines
3.4 KiB
C
/*
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* hostapd / WMM (Wi-Fi Multimedia)
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* Copyright 2002-2003, Instant802 Networks, Inc.
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* Copyright 2005-2006, Devicescape Software, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#ifndef WME_H
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#define WME_H
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#ifdef __linux__
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#include <endian.h>
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#endif /* __linux__ */
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#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
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#include <sys/types.h>
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#include <sys/endian.h>
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#endif /* defined(__FreeBSD__) || defined(__NetBSD__) ||
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* defined(__DragonFly__) */
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/*
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* WMM Information Element (used in (Re)Association Request frames; may also be
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* used in Beacon frames)
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*/
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struct wmm_information_element {
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/* Element ID: 221 (0xdd); Length: 7 */
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/* required fields for WMM version 1 */
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u8 oui[3]; /* 00:50:f2 */
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u8 oui_type; /* 2 */
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u8 oui_subtype; /* 0 */
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u8 version; /* 1 for WMM version 1.0 */
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u8 qos_info; /* AP/STA specific QoS info */
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} __attribute__ ((packed));
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#define WMM_AC_AIFSN_MASK 0x0f
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#define WMM_AC_AIFNS_SHIFT 0
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#define WMM_AC_ACM 0x10
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#define WMM_AC_ACI_MASK 0x60
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#define WMM_AC_ACI_SHIFT 5
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#define WMM_AC_ECWMIN_MASK 0x0f
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#define WMM_AC_ECWMIN_SHIFT 0
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#define WMM_AC_ECWMAX_MASK 0xf0
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#define WMM_AC_ECWMAX_SHIFT 4
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struct wmm_ac_parameter {
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u8 aci_aifsn; /* AIFSN, ACM, ACI */
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u8 cw; /* ECWmin, ECWmax (CW = 2^ECW - 1) */
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le16 txop_limit;
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} __attribute__ ((packed));
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/*
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* WMM Parameter Element (used in Beacon, Probe Response, and (Re)Association
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* Response frmaes)
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*/
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struct wmm_parameter_element {
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/* Element ID: 221 (0xdd); Length: 24 */
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/* required fields for WMM version 1 */
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u8 oui[3]; /* 00:50:f2 */
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u8 oui_type; /* 2 */
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u8 oui_subtype; /* 1 */
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u8 version; /* 1 for WMM version 1.0 */
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u8 qos_info; /* AP/STA specif QoS info */
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u8 reserved; /* 0 */
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struct wmm_ac_parameter ac[4]; /* AC_BE, AC_BK, AC_VI, AC_VO */
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} __attribute__ ((packed));
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/* WMM TSPEC Element */
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struct wmm_tspec_element {
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u8 eid; /* 221 = 0xdd */
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u8 length; /* 6 + 55 = 61 */
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u8 oui[3]; /* 00:50:f2 */
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u8 oui_type; /* 2 */
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u8 oui_subtype; /* 2 */
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u8 version; /* 1 */
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/* WMM TSPEC body (55 octets): */
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u8 ts_info[3];
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le16 nominal_msdu_size;
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le16 maximum_msdu_size;
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le32 minimum_service_interval;
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le32 maximum_service_interval;
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le32 inactivity_interval;
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le32 suspension_interval;
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le32 service_start_time;
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le32 minimum_data_rate;
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le32 mean_data_rate;
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le32 peak_data_rate;
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le32 maximum_burst_size;
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le32 delay_bound;
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le32 minimum_phy_rate;
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le16 surplus_bandwidth_allowance;
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le16 medium_time;
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} __attribute__ ((packed));
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/* Access Categories / ACI to AC coding */
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enum {
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WMM_AC_BE = 0 /* Best Effort */,
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WMM_AC_BK = 1 /* Background */,
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WMM_AC_VI = 2 /* Video */,
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WMM_AC_VO = 3 /* Voice */
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};
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struct ieee80211_mgmt;
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u8 * hostapd_eid_wmm(struct hostapd_data *hapd, u8 *eid);
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int hostapd_eid_wmm_valid(struct hostapd_data *hapd, u8 *eid, size_t len);
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#ifdef NEED_MLME
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int hostapd_wmm_sta_config(struct hostapd_data *hapd, struct sta_info *sta);
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#else /* NEED_MLME */
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static inline int hostapd_wmm_sta_config(struct hostapd_data *hapd,
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struct sta_info *sta)
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{
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return 0;
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}
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#endif /* NEED_MLME */
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void hostapd_wmm_action(struct hostapd_data *hapd, struct ieee80211_mgmt *mgmt,
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size_t len);
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#endif /* WME_H */
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