diff options
Diffstat (limited to 'drivers/net/wireless/ath6kl/wlan')
-rw-r--r-- | drivers/net/wireless/ath6kl/wlan/include/ieee80211.h | 397 | ||||
-rw-r--r-- | drivers/net/wireless/ath6kl/wlan/include/ieee80211_node.h | 81 | ||||
-rw-r--r-- | drivers/net/wireless/ath6kl/wlan/src/makefile | 22 | ||||
-rw-r--r-- | drivers/net/wireless/ath6kl/wlan/src/wlan_node.c | 569 | ||||
-rw-r--r-- | drivers/net/wireless/ath6kl/wlan/src/wlan_recv_beacon.c | 196 | ||||
-rw-r--r-- | drivers/net/wireless/ath6kl/wlan/src/wlan_utils.c | 57 |
6 files changed, 1322 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath6kl/wlan/include/ieee80211.h b/drivers/net/wireless/ath6kl/wlan/include/ieee80211.h new file mode 100644 index 000000000000..708b6b044d27 --- /dev/null +++ b/drivers/net/wireless/ath6kl/wlan/include/ieee80211.h @@ -0,0 +1,397 @@ +//------------------------------------------------------------------------------ +// <copyright file="ieee80211.h" company="Atheros"> +// Copyright (c) 2004-2008 Atheros Corporation. All rights reserved. +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License version 2 as +// published by the Free Software Foundation; +// +// Software distributed under the License is distributed on an "AS +// IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or +// implied. See the License for the specific language governing +// rights and limitations under the License. +// +// +//------------------------------------------------------------------------------ +//============================================================================== +// Author(s): ="Atheros" +//============================================================================== +#ifndef _NET80211_IEEE80211_H_ +#define _NET80211_IEEE80211_H_ + +#include "athstartpack.h" + +/* + * 802.11 protocol definitions. + */ +#define IEEE80211_WEP_KEYLEN 5 /* 40bit */ +#define IEEE80211_WEP_IVLEN 3 /* 24bit */ +#define IEEE80211_WEP_KIDLEN 1 /* 1 octet */ +#define IEEE80211_WEP_CRCLEN 4 /* CRC-32 */ +#define IEEE80211_WEP_NKID 4 /* number of key ids */ + +/* + * 802.11i defines an extended IV for use with non-WEP ciphers. + * When the EXTIV bit is set in the key id byte an additional + * 4 bytes immediately follow the IV for TKIP. For CCMP the + * EXTIV bit is likewise set but the 8 bytes represent the + * CCMP header rather than IV+extended-IV. + */ +#define IEEE80211_WEP_EXTIV 0x20 +#define IEEE80211_WEP_EXTIVLEN 4 /* extended IV length */ +#define IEEE80211_WEP_MICLEN 8 /* trailing MIC */ + +#define IEEE80211_CRC_LEN 4 + +#ifdef WAPI_ENABLE +#define IEEE80211_WAPI_EXTIVLEN 10 /* extended IV length */ +#endif /* WAPI ENABLE */ + + +#define IEEE80211_ADDR_LEN 6 /* size of 802.11 address */ +/* is 802.11 address multicast/broadcast? */ +#define IEEE80211_IS_MULTICAST(_a) (*(_a) & 0x01) +#define IEEE80211_IS_BROADCAST(_a) (*(_a) == 0xFF) +#define WEP_HEADER (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN) +#define WEP_TRAILER IEEE80211_WEP_CRCLEN +#define CCMP_HEADER (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + \ + IEEE80211_WEP_EXTIVLEN) +#define CCMP_TRAILER IEEE80211_WEP_MICLEN +#define TKIP_HEADER (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + \ + IEEE80211_WEP_EXTIVLEN) +#define TKIP_TRAILER IEEE80211_WEP_CRCLEN +#define TKIP_MICLEN IEEE80211_WEP_MICLEN + + +#define IEEE80211_ADDR_EQ(addr1, addr2) \ + (A_MEMCMP(addr1, addr2, IEEE80211_ADDR_LEN) == 0) + +#define IEEE80211_ADDR_COPY(dst,src) A_MEMCPY(dst,src,IEEE80211_ADDR_LEN) + +#define IEEE80211_KEYBUF_SIZE 16 +#define IEEE80211_MICBUF_SIZE (8+8) /* space for both tx and rx */ + +/* + * NB: these values are ordered carefully; there are lots of + * of implications in any reordering. In particular beware + * that 4 is not used to avoid conflicting with IEEE80211_F_PRIVACY. + */ +#define IEEE80211_CIPHER_WEP 0 +#define IEEE80211_CIPHER_TKIP 1 +#define IEEE80211_CIPHER_AES_OCB 2 +#define IEEE80211_CIPHER_AES_CCM 3 +#define IEEE80211_CIPHER_CKIP 5 +#define IEEE80211_CIPHER_CCKM_KRK 6 +#define IEEE80211_CIPHER_NONE 7 /* pseudo value */ + +#define IEEE80211_CIPHER_MAX (IEEE80211_CIPHER_NONE+1) + +#define IEEE80211_IS_VALID_WEP_CIPHER_LEN(len) \ + (((len) == 5) || ((len) == 13) || ((len) == 16)) + + + +/* + * generic definitions for IEEE 802.11 frames + */ +PREPACK struct ieee80211_frame { + A_UINT8 i_fc[2]; + A_UINT8 i_dur[2]; + A_UINT8 i_addr1[IEEE80211_ADDR_LEN]; + A_UINT8 i_addr2[IEEE80211_ADDR_LEN]; + A_UINT8 i_addr3[IEEE80211_ADDR_LEN]; + A_UINT8 i_seq[2]; + /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */ + /* see below */ +} POSTPACK; + +PREPACK struct ieee80211_qosframe { + A_UINT8 i_fc[2]; + A_UINT8 i_dur[2]; + A_UINT8 i_addr1[IEEE80211_ADDR_LEN]; + A_UINT8 i_addr2[IEEE80211_ADDR_LEN]; + A_UINT8 i_addr3[IEEE80211_ADDR_LEN]; + A_UINT8 i_seq[2]; + A_UINT8 i_qos[2]; +} POSTPACK; + +#define IEEE80211_FC0_VERSION_MASK 0x03 +#define IEEE80211_FC0_VERSION_SHIFT 0 +#define IEEE80211_FC0_VERSION_0 0x00 +#define IEEE80211_FC0_TYPE_MASK 0x0c +#define IEEE80211_FC0_TYPE_SHIFT 2 +#define IEEE80211_FC0_TYPE_MGT 0x00 +#define IEEE80211_FC0_TYPE_CTL 0x04 +#define IEEE80211_FC0_TYPE_DATA 0x08 + +#define IEEE80211_FC0_SUBTYPE_MASK 0xf0 +#define IEEE80211_FC0_SUBTYPE_SHIFT 4 +/* for TYPE_MGT */ +#define IEEE80211_FC0_SUBTYPE_ASSOC_REQ 0x00 +#define IEEE80211_FC0_SUBTYPE_ASSOC_RESP 0x10 +#define IEEE80211_FC0_SUBTYPE_REASSOC_REQ 0x20 +#define IEEE80211_FC0_SUBTYPE_REASSOC_RESP 0x30 +#define IEEE80211_FC0_SUBTYPE_PROBE_REQ 0x40 +#define IEEE80211_FC0_SUBTYPE_PROBE_RESP 0x50 +#define IEEE80211_FC0_SUBTYPE_BEACON 0x80 +#define IEEE80211_FC0_SUBTYPE_ATIM 0x90 +#define IEEE80211_FC0_SUBTYPE_DISASSOC 0xa0 +#define IEEE80211_FC0_SUBTYPE_AUTH 0xb0 +#define IEEE80211_FC0_SUBTYPE_DEAUTH 0xc0 +/* for TYPE_CTL */ +#define IEEE80211_FC0_SUBTYPE_PS_POLL 0xa0 +#define IEEE80211_FC0_SUBTYPE_RTS 0xb0 +#define IEEE80211_FC0_SUBTYPE_CTS 0xc0 +#define IEEE80211_FC0_SUBTYPE_ACK 0xd0 +#define IEEE80211_FC0_SUBTYPE_CF_END 0xe0 +#define IEEE80211_FC0_SUBTYPE_CF_END_ACK 0xf0 +/* for TYPE_DATA (bit combination) */ +#define IEEE80211_FC0_SUBTYPE_DATA 0x00 +#define IEEE80211_FC0_SUBTYPE_CF_ACK 0x10 +#define IEEE80211_FC0_SUBTYPE_CF_POLL 0x20 +#define IEEE80211_FC0_SUBTYPE_CF_ACPL 0x30 +#define IEEE80211_FC0_SUBTYPE_NODATA 0x40 +#define IEEE80211_FC0_SUBTYPE_CFACK 0x50 +#define IEEE80211_FC0_SUBTYPE_CFPOLL 0x60 +#define IEEE80211_FC0_SUBTYPE_CF_ACK_CF_ACK 0x70 +#define IEEE80211_FC0_SUBTYPE_QOS 0x80 +#define IEEE80211_FC0_SUBTYPE_QOS_NULL 0xc0 + +#define IEEE80211_FC1_DIR_MASK 0x03 +#define IEEE80211_FC1_DIR_NODS 0x00 /* STA->STA */ +#define IEEE80211_FC1_DIR_TODS 0x01 /* STA->AP */ +#define IEEE80211_FC1_DIR_FROMDS 0x02 /* AP ->STA */ +#define IEEE80211_FC1_DIR_DSTODS 0x03 /* AP ->AP */ + +#define IEEE80211_FC1_MORE_FRAG 0x04 +#define IEEE80211_FC1_RETRY 0x08 +#define IEEE80211_FC1_PWR_MGT 0x10 +#define IEEE80211_FC1_MORE_DATA 0x20 +#define IEEE80211_FC1_WEP 0x40 +#define IEEE80211_FC1_ORDER 0x80 + +#define IEEE80211_SEQ_FRAG_MASK 0x000f +#define IEEE80211_SEQ_FRAG_SHIFT 0 +#define IEEE80211_SEQ_SEQ_MASK 0xfff0 +#define IEEE80211_SEQ_SEQ_SHIFT 4 + +#define IEEE80211_NWID_LEN 32 + +/* + * 802.11 rate set. + */ +#define IEEE80211_RATE_SIZE 8 /* 802.11 standard */ +#define IEEE80211_RATE_MAXSIZE 15 /* max rates we'll handle */ + +#define WMM_NUM_AC 4 /* 4 AC categories */ + +#define WMM_PARAM_ACI_M 0x60 /* Mask for ACI field */ +#define WMM_PARAM_ACI_S 5 /* Shift for ACI field */ +#define WMM_PARAM_ACM_M 0x10 /* Mask for ACM bit */ +#define WMM_PARAM_ACM_S 4 /* Shift for ACM bit */ +#define WMM_PARAM_AIFSN_M 0x0f /* Mask for aifsn field */ +#define WMM_PARAM_LOGCWMIN_M 0x0f /* Mask for CwMin field (in log) */ +#define WMM_PARAM_LOGCWMAX_M 0xf0 /* Mask for CwMax field (in log) */ +#define WMM_PARAM_LOGCWMAX_S 4 /* Shift for CwMax field */ + +#define WMM_AC_TO_TID(_ac) ( \ + ((_ac) == WMM_AC_VO) ? 6 : \ + ((_ac) == WMM_AC_VI) ? 5 : \ + ((_ac) == WMM_AC_BK) ? 1 : \ + 0) + +#define TID_TO_WMM_AC(_tid) ( \ + ((_tid) < 1) ? WMM_AC_BE : \ + ((_tid) < 3) ? WMM_AC_BK : \ + ((_tid) < 6) ? WMM_AC_VI : \ + WMM_AC_VO) +/* + * Management information element payloads. + */ + +enum { + IEEE80211_ELEMID_SSID = 0, + IEEE80211_ELEMID_RATES = 1, + IEEE80211_ELEMID_FHPARMS = 2, + IEEE80211_ELEMID_DSPARMS = 3, + IEEE80211_ELEMID_CFPARMS = 4, + IEEE80211_ELEMID_TIM = 5, + IEEE80211_ELEMID_IBSSPARMS = 6, + IEEE80211_ELEMID_COUNTRY = 7, + IEEE80211_ELEMID_CHALLENGE = 16, + /* 17-31 reserved for challenge text extension */ + IEEE80211_ELEMID_PWRCNSTR = 32, + IEEE80211_ELEMID_PWRCAP = 33, + IEEE80211_ELEMID_TPCREQ = 34, + IEEE80211_ELEMID_TPCREP = 35, + IEEE80211_ELEMID_SUPPCHAN = 36, + IEEE80211_ELEMID_CHANSWITCH = 37, + IEEE80211_ELEMID_MEASREQ = 38, + IEEE80211_ELEMID_MEASREP = 39, + IEEE80211_ELEMID_QUIET = 40, + IEEE80211_ELEMID_IBSSDFS = 41, + IEEE80211_ELEMID_ERP = 42, + IEEE80211_ELEMID_HTCAP_ANA = 45, /* Address ANA, and non-ANA story, for interop. CL#171733 */ + IEEE80211_ELEMID_RSN = 48, + IEEE80211_ELEMID_XRATES = 50, + IEEE80211_ELEMID_HTINFO_ANA = 61, +#ifdef WAPI_ENABLE + IEEE80211_ELEMID_WAPI = 68, +#endif + IEEE80211_ELEMID_TPC = 150, + IEEE80211_ELEMID_CCKM = 156, + IEEE80211_ELEMID_VENDOR = 221, /* vendor private */ +}; + +#define ATH_OUI 0x7f0300 /* Atheros OUI */ +#define ATH_OUI_TYPE 0x01 +#define ATH_OUI_SUBTYPE 0x01 +#define ATH_OUI_VERSION 0x00 + +#define WPA_OUI 0xf25000 +#define WPA_OUI_TYPE 0x01 +#define WPA_VERSION 1 /* current supported version */ + +#define WPA_CSE_NULL 0x00 +#define WPA_CSE_WEP40 0x01 +#define WPA_CSE_TKIP 0x02 +#define WPA_CSE_CCMP 0x04 +#define WPA_CSE_WEP104 0x05 + +#define WPA_ASE_NONE 0x00 +#define WPA_ASE_8021X_UNSPEC 0x01 +#define WPA_ASE_8021X_PSK 0x02 + +#define RSN_OUI 0xac0f00 +#define RSN_VERSION 1 /* current supported version */ + +#define RSN_CSE_NULL 0x00 +#define RSN_CSE_WEP40 0x01 +#define RSN_CSE_TKIP 0x02 +#define RSN_CSE_WRAP 0x03 +#define RSN_CSE_CCMP 0x04 +#define RSN_CSE_WEP104 0x05 + +#define RSN_ASE_NONE 0x00 +#define RSN_ASE_8021X_UNSPEC 0x01 +#define RSN_ASE_8021X_PSK 0x02 + +#define RSN_CAP_PREAUTH 0x01 + +#define WMM_OUI 0xf25000 +#define WMM_OUI_TYPE 0x02 +#define WMM_INFO_OUI_SUBTYPE 0x00 +#define WMM_PARAM_OUI_SUBTYPE 0x01 +#define WMM_VERSION 1 + +/* WMM stream classes */ +#define WMM_NUM_AC 4 +#define WMM_AC_BE 0 /* best effort */ +#define WMM_AC_BK 1 /* background */ +#define WMM_AC_VI 2 /* video */ +#define WMM_AC_VO 3 /* voice */ + +/* TSPEC related */ +#define ACTION_CATEGORY_CODE_TSPEC 17 +#define ACTION_CODE_TSPEC_ADDTS 0 +#define ACTION_CODE_TSPEC_ADDTS_RESP 1 +#define ACTION_CODE_TSPEC_DELTS 2 + +typedef enum { + TSPEC_STATUS_CODE_ADMISSION_ACCEPTED = 0, + TSPEC_STATUS_CODE_ADDTS_INVALID_PARAMS = 0x1, + TSPEC_STATUS_CODE_ADDTS_REQUEST_REFUSED = 0x3, + TSPEC_STATUS_CODE_UNSPECIFIED_QOS_RELATED_FAILURE = 0xC8, + TSPEC_STATUS_CODE_REQUESTED_REFUSED_POLICY_CONFIGURATION = 0xC9, + TSPEC_STATUS_CODE_INSUFFCIENT_BANDWIDTH = 0xCA, + TSPEC_STATUS_CODE_INVALID_PARAMS = 0xCB, + TSPEC_STATUS_CODE_DELTS_SENT = 0x30, + TSPEC_STATUS_CODE_DELTS_RECV = 0x31, +} TSPEC_STATUS_CODE; + +#define TSPEC_TSID_MASK 0xF +#define TSPEC_TSID_S 1 + +/* + * WMM/802.11e Tspec Element + */ +typedef PREPACK struct wmm_tspec_ie_t { + A_UINT8 elementId; + A_UINT8 len; + A_UINT8 oui[3]; + A_UINT8 ouiType; + A_UINT8 ouiSubType; + A_UINT8 version; + A_UINT16 tsInfo_info; + A_UINT8 tsInfo_reserved; + A_UINT16 nominalMSDU; + A_UINT16 maxMSDU; + A_UINT32 minServiceInt; + A_UINT32 maxServiceInt; + A_UINT32 inactivityInt; + A_UINT32 suspensionInt; + A_UINT32 serviceStartTime; + A_UINT32 minDataRate; + A_UINT32 meanDataRate; + A_UINT32 peakDataRate; + A_UINT32 maxBurstSize; + A_UINT32 delayBound; + A_UINT32 minPhyRate; + A_UINT16 sba; + A_UINT16 mediumTime; +} POSTPACK WMM_TSPEC_IE; + + +/* + * BEACON management packets + * + * octet timestamp[8] + * octet beacon interval[2] + * octet capability information[2] + * information element + * octet elemid + * octet length + * octet information[length] + */ + +#define IEEE80211_BEACON_INTERVAL(beacon) \ + ((beacon)[8] | ((beacon)[9] << 8)) +#define IEEE80211_BEACON_CAPABILITY(beacon) \ + ((beacon)[10] | ((beacon)[11] << 8)) + +#define IEEE80211_CAPINFO_ESS 0x0001 +#define IEEE80211_CAPINFO_IBSS 0x0002 +#define IEEE80211_CAPINFO_CF_POLLABLE 0x0004 +#define IEEE80211_CAPINFO_CF_POLLREQ 0x0008 +#define IEEE80211_CAPINFO_PRIVACY 0x0010 +#define IEEE80211_CAPINFO_SHORT_PREAMBLE 0x0020 +#define IEEE80211_CAPINFO_PBCC 0x0040 +#define IEEE80211_CAPINFO_CHNL_AGILITY 0x0080 +/* bits 8-9 are reserved */ +#define IEEE80211_CAPINFO_SHORT_SLOTTIME 0x0400 +#define IEEE80211_CAPINFO_APSD 0x0800 +/* bit 12 is reserved */ +#define IEEE80211_CAPINFO_DSSSOFDM 0x2000 +/* bits 14-15 are reserved */ + +/* + * Authentication Modes + */ + +enum ieee80211_authmode { + IEEE80211_AUTH_NONE = 0, + IEEE80211_AUTH_OPEN = 1, + IEEE80211_AUTH_SHARED = 2, + IEEE80211_AUTH_8021X = 3, + IEEE80211_AUTH_AUTO = 4, /* auto-select/accept */ + /* NB: these are used only for ioctls */ + IEEE80211_AUTH_WPA = 5, /* WPA/RSN w/ 802.1x */ + IEEE80211_AUTH_WPA_PSK = 6, /* WPA/RSN w/ PSK */ + IEEE80211_AUTH_WPA_CCKM = 7, /* WPA/RSN IE w/ CCKM */ +}; + +#define IEEE80211_PS_MAX_QUEUE 50 /*Maximum no of buffers that can be queues for PS*/ + +#include "athendpack.h" + +#endif /* _NET80211_IEEE80211_H_ */ diff --git a/drivers/net/wireless/ath6kl/wlan/include/ieee80211_node.h b/drivers/net/wireless/ath6kl/wlan/include/ieee80211_node.h new file mode 100644 index 000000000000..faa1d653509e --- /dev/null +++ b/drivers/net/wireless/ath6kl/wlan/include/ieee80211_node.h @@ -0,0 +1,81 @@ +//------------------------------------------------------------------------------ +// <copyright file="ieee80211_node.h" company="Atheros"> +// Copyright (c) 2004-2008 Atheros Corporation. All rights reserved. +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License version 2 as +// published by the Free Software Foundation; +// +// Software distributed under the License is distributed on an "AS +// IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or +// implied. See the License for the specific language governing +// rights and limitations under the License. +// +// +//------------------------------------------------------------------------------ +//============================================================================== +// Author(s): ="Atheros" +//============================================================================== +#ifndef _IEEE80211_NODE_H_ +#define _IEEE80211_NODE_H_ + +/* + * Node locking definitions. + */ +#define IEEE80211_NODE_LOCK_INIT(_nt) A_MUTEX_INIT(&(_nt)->nt_nodelock) +#define IEEE80211_NODE_LOCK_DESTROY(_nt) if (A_IS_MUTEX_VALID(&(_nt)->nt_nodelock)) { \ + A_MUTEX_DELETE(&(_nt)->nt_nodelock); } + +#define IEEE80211_NODE_LOCK(_nt) A_MUTEX_LOCK(&(_nt)->nt_nodelock) +#define IEEE80211_NODE_UNLOCK(_nt) A_MUTEX_UNLOCK(&(_nt)->nt_nodelock) +#define IEEE80211_NODE_LOCK_BH(_nt) A_MUTEX_LOCK(&(_nt)->nt_nodelock) +#define IEEE80211_NODE_UNLOCK_BH(_nt) A_MUTEX_UNLOCK(&(_nt)->nt_nodelock) +#define IEEE80211_NODE_LOCK_ASSERT(_nt) + +/* + * Node reference counting definitions. + * + * ieee80211_node_initref initialize the reference count to 1 + * ieee80211_node_incref add a reference + * ieee80211_node_decref remove a reference + * ieee80211_node_dectestref remove a reference and return 1 if this + * is the last reference, otherwise 0 + * ieee80211_node_refcnt reference count for printing (only) + */ +#define ieee80211_node_initref(_ni) ((_ni)->ni_refcnt = 1) +#define ieee80211_node_incref(_ni) ((_ni)->ni_refcnt++) +#define ieee80211_node_decref(_ni) ((_ni)->ni_refcnt--) +#define ieee80211_node_dectestref(_ni) (((_ni)->ni_refcnt--) == 1) +#define ieee80211_node_refcnt(_ni) ((_ni)->ni_refcnt) + +#define IEEE80211_NODE_HASHSIZE 32 +/* simple hash is enough for variation of macaddr */ +#define IEEE80211_NODE_HASH(addr) \ + (((const A_UINT8 *)(addr))[IEEE80211_ADDR_LEN - 1] % \ + IEEE80211_NODE_HASHSIZE) + +/* + * Table of ieee80211_node instances. Each ieee80211com + * has at least one for holding the scan candidates. + * When operating as an access point or in ibss mode there + * is a second table for associated stations or neighbors. + */ +struct ieee80211_node_table { + void *nt_wmip; /* back reference */ + A_MUTEX_T nt_nodelock; /* on node table */ + struct bss *nt_node_first; /* information of all nodes */ + struct bss *nt_node_last; /* information of all nodes */ + struct bss *nt_hash[IEEE80211_NODE_HASHSIZE]; + const char *nt_name; /* for debugging */ + A_UINT32 nt_scangen; /* gen# for timeout scan */ + A_TIMER nt_inact_timer; + A_UINT8 isTimerArmed; /* is the node timer armed */ + A_UINT32 nt_nodeAge; /* node aging time */ +#ifdef OS_ROAM_MANAGEMENT + A_UINT32 nt_si_gen; /* gen# for scan indication*/ +#endif +}; + +#define WLAN_NODE_INACT_TIMEOUT_MSEC 120000 + +#endif /* _IEEE80211_NODE_H_ */ diff --git a/drivers/net/wireless/ath6kl/wlan/src/makefile b/drivers/net/wireless/ath6kl/wlan/src/makefile new file mode 100644 index 000000000000..6e53a111b67f --- /dev/null +++ b/drivers/net/wireless/ath6kl/wlan/src/makefile @@ -0,0 +1,22 @@ +#------------------------------------------------------------------------------ +# <copyright file="makefile" company="Atheros"> +# Copyright (c) 2005-2007 Atheros Corporation. All rights reserved. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License version 2 as +# published by the Free Software Foundation; +# +# Software distributed under the License is distributed on an "AS +# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or +# implied. See the License for the specific language governing +# rights and limitations under the License. +# +# +#------------------------------------------------------------------------------ +#============================================================================== +# Author(s): ="Atheros" +#============================================================================== +!INCLUDE $(_MAKEENVROOT)\makefile.def + + + diff --git a/drivers/net/wireless/ath6kl/wlan/src/wlan_node.c b/drivers/net/wireless/ath6kl/wlan/src/wlan_node.c new file mode 100644 index 000000000000..4f87d031459c --- /dev/null +++ b/drivers/net/wireless/ath6kl/wlan/src/wlan_node.c @@ -0,0 +1,569 @@ +//------------------------------------------------------------------------------ +// <copyright file="wlan_node.c" company="Atheros"> +// Copyright (c) 2004-2008 Atheros Corporation. All rights reserved. +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License version 2 as +// published by the Free Software Foundation; +// +// Software distributed under the License is distributed on an "AS +// IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or +// implied. See the License for the specific language governing +// rights and limitations under the License. +// +// +//------------------------------------------------------------------------------ +//============================================================================== +// IEEE 802.11 node handling support. +// +// Author(s): ="Atheros" +//============================================================================== +#include <a_config.h> +#include <athdefs.h> +#include <a_types.h> +#include <a_osapi.h> +#define ATH_MODULE_NAME wlan +#include <a_debug.h> +#include "htc.h" +#include "htc_api.h" +#include <wmi.h> +#include <ieee80211.h> +#include <wlan_api.h> +#include <wmi_api.h> +#include <ieee80211_node.h> + +#define ATH_DEBUG_WLAN ATH_DEBUG_MAKE_MODULE_MASK(0) + +#ifdef DEBUG + +static ATH_DEBUG_MASK_DESCRIPTION wlan_debug_desc[] = { + { ATH_DEBUG_WLAN , "General WLAN Node Tracing"}, +}; + +ATH_DEBUG_INSTANTIATE_MODULE_VAR(wlan, + "wlan", + "WLAN Node Management", + ATH_DEBUG_MASK_DEFAULTS, + ATH_DEBUG_DESCRIPTION_COUNT(wlan_debug_desc), + wlan_debug_desc); + +#endif + +static void wlan_node_timeout(A_ATH_TIMER arg); + +static bss_t * _ieee80211_find_node (struct ieee80211_node_table *nt, + const A_UINT8 *macaddr); + +bss_t * +wlan_node_alloc(struct ieee80211_node_table *nt, int wh_size) +{ + bss_t *ni; + + ni = A_MALLOC_NOWAIT(sizeof(bss_t)); + + if (ni != NULL) { + if (wh_size) + { + ni->ni_buf = A_MALLOC_NOWAIT(wh_size); + if (ni->ni_buf == NULL) { + A_FREE(ni); + ni = NULL; + return ni; + } + } + } else { + return ni; + } + + /* Make sure our lists are clean */ + ni->ni_list_next = NULL; + ni->ni_list_prev = NULL; + ni->ni_hash_next = NULL; + ni->ni_hash_prev = NULL; + + // + // ni_scangen never initialized before and during suspend/resume of winmobile, + // that some junk has been stored in this, due to this scan list didn't properly updated + // + ni->ni_scangen = 0; + +#ifdef OS_ROAM_MANAGEMENT + ni->ni_si_gen = 0; +#endif + + return ni; +} + +void +wlan_node_free(bss_t *ni) +{ + if (ni->ni_buf != NULL) { + A_FREE(ni->ni_buf); + } + A_FREE(ni); +} + +void +wlan_setup_node(struct ieee80211_node_table *nt, bss_t *ni, + const A_UINT8 *macaddr) +{ + int hash; + A_UINT32 timeoutValue = 0; + + A_MEMCPY(ni->ni_macaddr, macaddr, IEEE80211_ADDR_LEN); + hash = IEEE80211_NODE_HASH (macaddr); + ieee80211_node_initref (ni); /* mark referenced */ + + timeoutValue = nt->nt_nodeAge; + + ni->ni_tstamp = A_GET_MS (timeoutValue); + + IEEE80211_NODE_LOCK_BH(nt); + + /* Insert at the end of the node list */ + ni->ni_list_next = NULL; + ni->ni_list_prev = nt->nt_node_last; + if(nt->nt_node_last != NULL) + { + nt->nt_node_last->ni_list_next = ni; + } + nt->nt_node_last = ni; + if(nt->nt_node_first == NULL) + { + nt->nt_node_first = ni; + } + + /* Insert into the hash list i.e. the bucket */ + if((ni->ni_hash_next = nt->nt_hash[hash]) != NULL) + { + nt->nt_hash[hash]->ni_hash_prev = ni; + } + ni->ni_hash_prev = NULL; + nt->nt_hash[hash] = ni; + + if (!nt->isTimerArmed) { + A_TIMEOUT_MS(&nt->nt_inact_timer, timeoutValue, 0); + nt->isTimerArmed = TRUE; + } + + IEEE80211_NODE_UNLOCK_BH(nt); +} + +static bss_t * +_ieee80211_find_node(struct ieee80211_node_table *nt, + const A_UINT8 *macaddr) +{ + bss_t *ni; + int hash; + + IEEE80211_NODE_LOCK_ASSERT(nt); + + hash = IEEE80211_NODE_HASH(macaddr); + for(ni = nt->nt_hash[hash]; ni; ni = ni->ni_hash_next) { + if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) { + ieee80211_node_incref(ni); /* mark referenced */ + return ni; + } + } + return NULL; +} + +bss_t * +wlan_find_node(struct ieee80211_node_table *nt, const A_UINT8 *macaddr) +{ + bss_t *ni; + + IEEE80211_NODE_LOCK(nt); + ni = _ieee80211_find_node(nt, macaddr); + IEEE80211_NODE_UNLOCK(nt); + return ni; +} + +/* + * Reclaim a node. If this is the last reference count then + * do the normal free work. Otherwise remove it from the node + * table and mark it gone by clearing the back-reference. + */ +void +wlan_node_reclaim(struct ieee80211_node_table *nt, bss_t *ni) +{ + IEEE80211_NODE_LOCK(nt); + + if(ni->ni_list_prev == NULL) + { + /* First in list so fix the list head */ + nt->nt_node_first = ni->ni_list_next; + } + else + { + ni->ni_list_prev->ni_list_next = ni->ni_list_next; + } + + if(ni->ni_list_next == NULL) + { + /* Last in list so fix list tail */ + nt->nt_node_last = ni->ni_list_prev; + } + else + { + ni->ni_list_next->ni_list_prev = ni->ni_list_prev; + } + + if(ni->ni_hash_prev == NULL) + { + /* First in list so fix the list head */ + int hash; + hash = IEEE80211_NODE_HASH(ni->ni_macaddr); + nt->nt_hash[hash] = ni->ni_hash_next; + } + else + { + ni->ni_hash_prev->ni_hash_next = ni->ni_hash_next; + } + + if(ni->ni_hash_next != NULL) + { + ni->ni_hash_next->ni_hash_prev = ni->ni_hash_prev; + } + wlan_node_free(ni); + + IEEE80211_NODE_UNLOCK(nt); +} + +static void +wlan_node_dec_free(bss_t *ni) +{ + if (ieee80211_node_dectestref(ni)) { + wlan_node_free(ni); + } +} + +void +wlan_free_allnodes(struct ieee80211_node_table *nt) +{ + bss_t *ni; + + while ((ni = nt->nt_node_first) != NULL) { + wlan_node_reclaim(nt, ni); + } +} + +void +wlan_iterate_nodes(struct ieee80211_node_table *nt, wlan_node_iter_func *f, + void *arg) +{ + bss_t *ni; + A_UINT32 gen; + + gen = ++nt->nt_scangen; + + IEEE80211_NODE_LOCK(nt); + for (ni = nt->nt_node_first; ni; ni = ni->ni_list_next) { + if (ni->ni_scangen != gen) { + ni->ni_scangen = gen; + (void) ieee80211_node_incref(ni); + (*f)(arg, ni); + wlan_node_dec_free(ni); + } + } + IEEE80211_NODE_UNLOCK(nt); +} + +/* + * Node table support. + */ +void +wlan_node_table_init(void *wmip, struct ieee80211_node_table *nt) +{ + int i; + + AR_DEBUG_PRINTF(ATH_DEBUG_WLAN, ("node table = 0x%x\n", (A_UINT32)nt)); + IEEE80211_NODE_LOCK_INIT(nt); + + A_REGISTER_MODULE_DEBUG_INFO(wlan); + + nt->nt_node_first = nt->nt_node_last = NULL; + for(i = 0; i < IEEE80211_NODE_HASHSIZE; i++) + { + nt->nt_hash[i] = NULL; + } + + A_INIT_TIMER(&nt->nt_inact_timer, wlan_node_timeout, nt); + nt->isTimerArmed = FALSE; + nt->nt_wmip = wmip; + nt->nt_nodeAge = WLAN_NODE_INACT_TIMEOUT_MSEC; + + // + // nt_scangen never initialized before and during suspend/resume of winmobile, + // that some junk has been stored in this, due to this scan list didn't properly updated + // + nt->nt_scangen = 0; + +#ifdef OS_ROAM_MANAGEMENT + nt->nt_si_gen = 0; +#endif +} + +void +wlan_set_nodeage(struct ieee80211_node_table *nt, A_UINT32 nodeAge) +{ + nt->nt_nodeAge = nodeAge; + return; +} +static void +wlan_node_timeout (A_ATH_TIMER arg) +{ + struct ieee80211_node_table *nt = (struct ieee80211_node_table *)arg; + bss_t *bss, *nextBss; + A_UINT8 myBssid[IEEE80211_ADDR_LEN], reArmTimer = FALSE; + A_UINT32 timeoutValue = 0; + + timeoutValue = nt->nt_nodeAge; + + wmi_get_current_bssid(nt->nt_wmip, myBssid); + + bss = nt->nt_node_first; + while (bss != NULL) + { + nextBss = bss->ni_list_next; + if (A_MEMCMP(myBssid, bss->ni_macaddr, sizeof(myBssid)) != 0) + { + + if (bss->ni_tstamp <= A_GET_MS(0)) + { + /* + * free up all but the current bss - if set + */ + wlan_node_reclaim(nt, bss); + } + else + { + /* + * Re-arm timer, only when we have a bss other than + * current bss AND it is not aged-out. + */ + reArmTimer = TRUE; + } + } + bss = nextBss; + } + + if (reArmTimer) + A_TIMEOUT_MS (&nt->nt_inact_timer, timeoutValue, 0); + + nt->isTimerArmed = reArmTimer; +} + +void +wlan_node_table_cleanup(struct ieee80211_node_table *nt) +{ + A_UNTIMEOUT(&nt->nt_inact_timer); + A_DELETE_TIMER(&nt->nt_inact_timer); + wlan_free_allnodes(nt); + IEEE80211_NODE_LOCK_DESTROY(nt); +} + +bss_t * +wlan_find_Ssidnode (struct ieee80211_node_table *nt, A_UCHAR *pSsid, + A_UINT32 ssidLength, A_BOOL bIsWPA2, A_BOOL bMatchSSID) +{ + bss_t *ni = NULL; + A_UCHAR *pIESsid = NULL; + + IEEE80211_NODE_LOCK (nt); + + for (ni = nt->nt_node_first; ni; ni = ni->ni_list_next) { + pIESsid = ni->ni_cie.ie_ssid; + if (pIESsid[1] <= 32) { + + // Step 1 : Check SSID + if (0x00 == memcmp (pSsid, &pIESsid[2], ssidLength)) { + + // + // Step 2.1 : Check MatchSSID is TRUE, if so, return Matched SSID + // Profile, otherwise check whether WPA2 or WPA + // + if (TRUE == bMatchSSID) { + ieee80211_node_incref (ni); /* mark referenced */ + IEEE80211_NODE_UNLOCK (nt); + return ni; + } + + // Step 2 : if SSID matches, check WPA or WPA2 + if (TRUE == bIsWPA2 && NULL != ni->ni_cie.ie_rsn) { + ieee80211_node_incref (ni); /* mark referenced */ + IEEE80211_NODE_UNLOCK (nt); + return ni; + } + if (FALSE == bIsWPA2 && NULL != ni->ni_cie.ie_wpa) { + ieee80211_node_incref(ni); /* mark referenced */ + IEEE80211_NODE_UNLOCK (nt); + return ni; + } + } + } + } + + IEEE80211_NODE_UNLOCK (nt); + + return NULL; +} + +void +wlan_node_return (struct ieee80211_node_table *nt, bss_t *ni) +{ + IEEE80211_NODE_LOCK (nt); + wlan_node_dec_free (ni); + IEEE80211_NODE_UNLOCK (nt); +} + +void +wlan_node_remove_core (struct ieee80211_node_table *nt, bss_t *ni) +{ + if(ni->ni_list_prev == NULL) + { + /* First in list so fix the list head */ + nt->nt_node_first = ni->ni_list_next; + } + else + { + ni->ni_list_prev->ni_list_next = ni->ni_list_next; + } + + if(ni->ni_list_next == NULL) + { + /* Last in list so fix list tail */ + nt->nt_node_last = ni->ni_list_prev; + } + else + { + ni->ni_list_next->ni_list_prev = ni->ni_list_prev; + } + + if(ni->ni_hash_prev == NULL) + { + /* First in list so fix the list head */ + int hash; + hash = IEEE80211_NODE_HASH(ni->ni_macaddr); + nt->nt_hash[hash] = ni->ni_hash_next; + } + else + { + ni->ni_hash_prev->ni_hash_next = ni->ni_hash_next; + } + + if(ni->ni_hash_next != NULL) + { + ni->ni_hash_next->ni_hash_prev = ni->ni_hash_prev; + } +} + +bss_t * +wlan_node_remove(struct ieee80211_node_table *nt, A_UINT8 *bssid) +{ + bss_t *bss, *nextBss; + + IEEE80211_NODE_LOCK(nt); + + bss = nt->nt_node_first; + + while (bss != NULL) + { + nextBss = bss->ni_list_next; + + if (A_MEMCMP(bssid, bss->ni_macaddr, 6) == 0) + { + wlan_node_remove_core (nt, bss); + IEEE80211_NODE_UNLOCK(nt); + return bss; + } + + bss = nextBss; + } + + IEEE80211_NODE_UNLOCK(nt); + return NULL; +} + +bss_t * +wlan_find_matching_Ssidnode (struct ieee80211_node_table *nt, A_UCHAR *pSsid, + A_UINT32 ssidLength, A_UINT32 dot11AuthMode, A_UINT32 authMode, + A_UINT32 pairwiseCryptoType, A_UINT32 grpwiseCryptoTyp) +{ + bss_t *ni = NULL; + bss_t *best_ni = NULL; + A_UCHAR *pIESsid = NULL; + + IEEE80211_NODE_LOCK (nt); + + for (ni = nt->nt_node_first; ni; ni = ni->ni_list_next) { + pIESsid = ni->ni_cie.ie_ssid; + if (pIESsid[1] <= 32) { + + // Step 1 : Check SSID + if (0x00 == memcmp (pSsid, &pIESsid[2], ssidLength)) { + + if (ni->ni_cie.ie_capInfo & 0x10) + { + + if ((NULL != ni->ni_cie.ie_rsn) && (WPA2_PSK_AUTH == authMode)) + { + /* WPA2 */ + if (NULL == best_ni) + { + best_ni = ni; + } + else if (ni->ni_rssi > best_ni->ni_rssi) + { + best_ni = ni; + } + } + else if ((NULL != ni->ni_cie.ie_wpa) && (WPA_PSK_AUTH == authMode)) + { + /* WPA */ + if (NULL == best_ni) + { + best_ni = ni; + } + else if (ni->ni_rssi > best_ni->ni_rssi) + { + best_ni = ni; + } + } + else if (WEP_CRYPT == pairwiseCryptoType) + { + /* WEP */ + if (NULL == best_ni) + { + best_ni = ni; + } + else if (ni->ni_rssi > best_ni->ni_rssi) + { + best_ni = ni; + } + } + } + else + { + /* open AP */ + if ((OPEN_AUTH == authMode) && (NONE_CRYPT == pairwiseCryptoType)) + { + if (NULL == best_ni) + { + best_ni = ni; + } + else if (ni->ni_rssi > best_ni->ni_rssi) + { + best_ni = ni; + } + } + } + } + } + } + + IEEE80211_NODE_UNLOCK (nt); + + return best_ni; +} + diff --git a/drivers/net/wireless/ath6kl/wlan/src/wlan_recv_beacon.c b/drivers/net/wireless/ath6kl/wlan/src/wlan_recv_beacon.c new file mode 100644 index 000000000000..0d5bce78165f --- /dev/null +++ b/drivers/net/wireless/ath6kl/wlan/src/wlan_recv_beacon.c @@ -0,0 +1,196 @@ +//------------------------------------------------------------------------------ +// <copyright file="wlan_recv_beacon.c" company="Atheros"> +// Copyright (c) 2004-2008 Atheros Corporation. All rights reserved. +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License version 2 as +// published by the Free Software Foundation; +// +// Software distributed under the License is distributed on an "AS +// IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or +// implied. See the License for the specific language governing +// rights and limitations under the License. +// +// +//------------------------------------------------------------------------------ +//============================================================================== +// IEEE 802.11 input handling. +// +// Author(s): ="Atheros" +//============================================================================== + +#include "a_config.h" +#include "athdefs.h" +#include "a_types.h" +#include "a_osapi.h" +#include <wmi.h> +#include <ieee80211.h> +#include <wlan_api.h> + +#define IEEE80211_VERIFY_LENGTH(_len, _minlen) do { \ + if ((_len) < (_minlen)) { \ + return A_EINVAL; \ + } \ +} while (0) + +#define IEEE80211_VERIFY_ELEMENT(__elem, __maxlen) do { \ + if ((__elem) == NULL) { \ + return A_EINVAL; \ + } \ + if ((__elem)[1] > (__maxlen)) { \ + return A_EINVAL; \ + } \ +} while (0) + + +/* unaligned little endian access */ +#define LE_READ_2(p) \ + ((A_UINT16) \ + ((((A_UINT8 *)(p))[0] ) | (((A_UINT8 *)(p))[1] << 8))) + +#define LE_READ_4(p) \ + ((A_UINT32) \ + ((((A_UINT8 *)(p))[0] ) | (((A_UINT8 *)(p))[1] << 8) | \ + (((A_UINT8 *)(p))[2] << 16) | (((A_UINT8 *)(p))[3] << 24))) + + +static int __inline +iswpaoui(const A_UINT8 *frm) +{ + return frm[1] > 3 && LE_READ_4(frm+2) == ((WPA_OUI_TYPE<<24)|WPA_OUI); +} + +static int __inline +iswmmoui(const A_UINT8 *frm) +{ + return frm[1] > 3 && LE_READ_4(frm+2) == ((WMM_OUI_TYPE<<24)|WMM_OUI); +} + +/* unused functions for now */ +#if 0 +static int __inline +iswmmparam(const A_UINT8 *frm) +{ + return frm[1] > 5 && frm[6] == WMM_PARAM_OUI_SUBTYPE; +} + +static int __inline +iswmminfo(const A_UINT8 *frm) +{ + return frm[1] > 5 && frm[6] == WMM_INFO_OUI_SUBTYPE; +} +#endif + +static int __inline +isatherosoui(const A_UINT8 *frm) +{ + return frm[1] > 3 && LE_READ_4(frm+2) == ((ATH_OUI_TYPE<<24)|ATH_OUI); +} + +static int __inline +iswscoui(const A_UINT8 *frm) +{ + return frm[1] > 3 && LE_READ_4(frm+2) == ((0x04<<24)|WPA_OUI); +} + +A_STATUS +wlan_parse_beacon(A_UINT8 *buf, int framelen, struct ieee80211_common_ie *cie) +{ + A_UINT8 *frm, *efrm; + A_UINT8 elemid_ssid = FALSE; + + frm = buf; + efrm = (A_UINT8 *) (frm + framelen); + + /* + * beacon/probe response frame format + * [8] time stamp + * [2] beacon interval + * [2] capability information + * [tlv] ssid + * [tlv] supported rates + * [tlv] country information + * [tlv] parameter set (FH/DS) + * [tlv] erp information + * [tlv] extended supported rates + * [tlv] WMM + * [tlv] WPA or RSN + * [tlv] Atheros Advanced Capabilities + */ + IEEE80211_VERIFY_LENGTH(efrm - frm, 12); + A_MEMZERO(cie, sizeof(*cie)); + + cie->ie_tstamp = frm; frm += 8; + cie->ie_beaconInt = A_LE2CPU16(*(A_UINT16 *)frm); frm += 2; + cie->ie_capInfo = A_LE2CPU16(*(A_UINT16 *)frm); frm += 2; + cie->ie_chan = 0; + + while (frm < efrm) { + switch (*frm) { + case IEEE80211_ELEMID_SSID: + if (!elemid_ssid) { + cie->ie_ssid = frm; + elemid_ssid = TRUE; + } + break; + case IEEE80211_ELEMID_RATES: + cie->ie_rates = frm; + break; + case IEEE80211_ELEMID_COUNTRY: + cie->ie_country = frm; + break; + case IEEE80211_ELEMID_FHPARMS: + break; + case IEEE80211_ELEMID_DSPARMS: + cie->ie_chan = frm[2]; + break; + case IEEE80211_ELEMID_TIM: + cie->ie_tim = frm; + break; + case IEEE80211_ELEMID_IBSSPARMS: + break; + case IEEE80211_ELEMID_XRATES: + cie->ie_xrates = frm; + break; + case IEEE80211_ELEMID_ERP: + if (frm[1] != 1) { + //A_PRINTF("Discarding ERP Element - Bad Len\n"); + return A_EINVAL; + } + cie->ie_erp = frm[2]; + break; + case IEEE80211_ELEMID_RSN: + cie->ie_rsn = frm; + break; + case IEEE80211_ELEMID_HTCAP_ANA: + cie->ie_htcap = frm; + break; + case IEEE80211_ELEMID_HTINFO_ANA: + cie->ie_htop = frm; + break; +#ifdef WAPI_ENABLE + case IEEE80211_ELEMID_WAPI: + cie->ie_wapi = frm; + break; +#endif + case IEEE80211_ELEMID_VENDOR: + if (iswpaoui(frm)) { + cie->ie_wpa = frm; + } else if (iswmmoui(frm)) { + cie->ie_wmm = frm; + } else if (isatherosoui(frm)) { + cie->ie_ath = frm; + } else if(iswscoui(frm)) { + cie->ie_wsc = frm; + } + break; + default: + break; + } + frm += frm[1] + 2; + } + IEEE80211_VERIFY_ELEMENT(cie->ie_rates, IEEE80211_RATE_MAXSIZE); + IEEE80211_VERIFY_ELEMENT(cie->ie_ssid, IEEE80211_NWID_LEN); + + return A_OK; +} diff --git a/drivers/net/wireless/ath6kl/wlan/src/wlan_utils.c b/drivers/net/wireless/ath6kl/wlan/src/wlan_utils.c new file mode 100644 index 000000000000..0d1c24ec1ca6 --- /dev/null +++ b/drivers/net/wireless/ath6kl/wlan/src/wlan_utils.c @@ -0,0 +1,57 @@ +//------------------------------------------------------------------------------ +// <copyright file="wlan_utils.c" company="Atheros"> +// Copyright (c) 2004-2008 Atheros Corporation. All rights reserved. +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License version 2 as +// published by the Free Software Foundation; +// +// Software distributed under the License is distributed on an "AS +// IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or +// implied. See the License for the specific language governing +// rights and limitations under the License. +// +// +//------------------------------------------------------------------------------ +//============================================================================== +// This module implements frequently used wlan utilies +// +// Author(s): ="Atheros" +//============================================================================== +#include <a_config.h> +#include <athdefs.h> +#include <a_types.h> +#include <a_osapi.h> + +/* + * converts ieee channel number to frequency + */ +A_UINT16 +wlan_ieee2freq(int chan) +{ + if (chan == 14) { + return 2484; + } + if (chan < 14) { /* 0-13 */ + return (2407 + (chan*5)); + } + if (chan < 27) { /* 15-26 */ + return (2512 + ((chan-15)*20)); + } + return (5000 + (chan*5)); +} + +/* + * Converts MHz frequency to IEEE channel number. + */ +A_UINT32 +wlan_freq2ieee(A_UINT16 freq) +{ + if (freq == 2484) + return 14; + if (freq < 2484) + return (freq - 2407) / 5; + if (freq < 5000) + return 15 + ((freq - 2512) / 20); + return (freq - 5000) / 5; +} |