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/*!
* @file coreconfigurator.c
* @brief
* @author
* @sa coreconfigurator.h
* @date 1 Mar 2012
* @version 1.0
*/
#include "coreconfigurator.h"
#include "wilc_wlan_if.h"
#include "wilc_wlan.h"
#include <linux/errno.h>
#include <linux/slab.h>
#define TAG_PARAM_OFFSET (MAC_HDR_LEN + TIME_STAMP_LEN + \
BEACON_INTERVAL_LEN + CAP_INFO_LEN)
/* Basic Frame Type Codes (2-bit) */
enum basic_frame_type {
FRAME_TYPE_CONTROL = 0x04,
FRAME_TYPE_DATA = 0x08,
FRAME_TYPE_MANAGEMENT = 0x00,
FRAME_TYPE_RESERVED = 0x0C,
FRAME_TYPE_FORCE_32BIT = 0xFFFFFFFF
};
/* Frame Type and Subtype Codes (6-bit) */
enum sub_frame_type {
ASSOC_REQ = 0x00,
ASSOC_RSP = 0x10,
REASSOC_REQ = 0x20,
REASSOC_RSP = 0x30,
PROBE_REQ = 0x40,
PROBE_RSP = 0x50,
BEACON = 0x80,
ATIM = 0x90,
DISASOC = 0xA0,
AUTH = 0xB0,
DEAUTH = 0xC0,
ACTION = 0xD0,
PS_POLL = 0xA4,
RTS = 0xB4,
CTS = 0xC4,
ACK = 0xD4,
CFEND = 0xE4,
CFEND_ACK = 0xF4,
DATA = 0x08,
DATA_ACK = 0x18,
DATA_POLL = 0x28,
DATA_POLL_ACK = 0x38,
NULL_FRAME = 0x48,
CFACK = 0x58,
CFPOLL = 0x68,
CFPOLL_ACK = 0x78,
QOS_DATA = 0x88,
QOS_DATA_ACK = 0x98,
QOS_DATA_POLL = 0xA8,
QOS_DATA_POLL_ACK = 0xB8,
QOS_NULL_FRAME = 0xC8,
QOS_CFPOLL = 0xE8,
QOS_CFPOLL_ACK = 0xF8,
BLOCKACK_REQ = 0x84,
BLOCKACK = 0x94,
FRAME_SUBTYPE_FORCE_32BIT = 0xFFFFFFFF
};
/* Element ID of various Information Elements */
enum info_element_id {
ISSID = 0, /* Service Set Identifier */
ISUPRATES = 1, /* Supported Rates */
IFHPARMS = 2, /* FH parameter set */
IDSPARMS = 3, /* DS parameter set */
ICFPARMS = 4, /* CF parameter set */
ITIM = 5, /* Traffic Information Map */
IIBPARMS = 6, /* IBSS parameter set */
ICOUNTRY = 7, /* Country element */
IEDCAPARAMS = 12, /* EDCA parameter set */
ITSPEC = 13, /* Traffic Specification */
ITCLAS = 14, /* Traffic Classification */
ISCHED = 15, /* Schedule */
ICTEXT = 16, /* Challenge Text */
IPOWERCONSTRAINT = 32, /* Power Constraint */
IPOWERCAPABILITY = 33, /* Power Capability */
ITPCREQUEST = 34, /* TPC Request */
ITPCREPORT = 35, /* TPC Report */
ISUPCHANNEL = 36, /* Supported channel list */
ICHSWANNOUNC = 37, /* Channel Switch Announcement */
IMEASUREMENTREQUEST = 38, /* Measurement request */
IMEASUREMENTREPORT = 39, /* Measurement report */
IQUIET = 40, /* Quiet element Info */
IIBSSDFS = 41, /* IBSS DFS */
IERPINFO = 42, /* ERP Information */
ITSDELAY = 43, /* TS Delay */
ITCLASPROCESS = 44, /* TCLAS Processing */
IHTCAP = 45, /* HT Capabilities */
IQOSCAP = 46, /* QoS Capability */
IRSNELEMENT = 48, /* RSN Information Element */
IEXSUPRATES = 50, /* Extended Supported Rates */
IEXCHSWANNOUNC = 60, /* Extended Ch Switch Announcement*/
IHTOPERATION = 61, /* HT Information */
ISECCHOFF = 62, /* Secondary Channel Offeset */
I2040COEX = 72, /* 20/40 Coexistence IE */
I2040INTOLCHREPORT = 73, /* 20/40 Intolerant channel report*/
IOBSSSCAN = 74, /* OBSS Scan parameters */
IEXTCAP = 127, /* Extended capability */
IWMM = 221, /* WMM parameters */
IWPAELEMENT = 221, /* WPA Information Element */
INFOELEM_ID_FORCE_32BIT = 0xFFFFFFFF
};
/* This function extracts the beacon period field from the beacon or probe */
/* response frame. */
static inline u16 get_beacon_period(u8 *data)
{
u16 bcn_per;
bcn_per = data[0];
bcn_per |= (data[1] << 8);
return bcn_per;
}
static inline u32 get_beacon_timestamp_lo(u8 *data)
{
u32 time_stamp = 0;
u32 index = MAC_HDR_LEN;
time_stamp |= data[index++];
time_stamp |= (data[index++] << 8);
time_stamp |= (data[index++] << 16);
time_stamp |= (data[index] << 24);
return time_stamp;
}
static inline u32 get_beacon_timestamp_hi(u8 *data)
{
u32 time_stamp = 0;
u32 index = (MAC_HDR_LEN + 4);
time_stamp |= data[index++];
time_stamp |= (data[index++] << 8);
time_stamp |= (data[index++] << 16);
time_stamp |= (data[index] << 24);
return time_stamp;
}
/* This function extracts the 'frame type and sub type' bits from the MAC */
/* header of the input frame. */
/* Returns the value in the LSB of the returned value. */
static inline enum sub_frame_type get_sub_type(u8 *header)
{
return ((enum sub_frame_type)(header[0] & 0xFC));
}
/* This function extracts the 'to ds' bit from the MAC header of the input */
/* frame. */
/* Returns the value in the LSB of the returned value. */
static inline u8 get_to_ds(u8 *header)
{
return (header[1] & 0x01);
}
/* This function extracts the 'from ds' bit from the MAC header of the input */
/* frame. */
/* Returns the value in the LSB of the returned value. */
static inline u8 get_from_ds(u8 *header)
{
return ((header[1] & 0x02) >> 1);
}
/* This function extracts the MAC Address in 'address1' field of the MAC */
/* header and updates the MAC Address in the allocated 'addr' variable. */
static inline void get_address1(u8 *pu8msa, u8 *addr)
{
memcpy(addr, pu8msa + 4, 6);
}
/* This function extracts the MAC Address in 'address2' field of the MAC */
/* header and updates the MAC Address in the allocated 'addr' variable. */
static inline void get_address2(u8 *pu8msa, u8 *addr)
{
memcpy(addr, pu8msa + 10, 6);
}
/* This function extracts the MAC Address in 'address3' field of the MAC */
/* header and updates the MAC Address in the allocated 'addr' variable. */
static inline void get_address3(u8 *pu8msa, u8 *addr)
{
memcpy(addr, pu8msa + 16, 6);
}
/* This function extracts the BSSID from the incoming WLAN packet based on */
/* the 'from ds' bit, and updates the MAC Address in the allocated 'addr' */
/* variable. */
static inline void get_BSSID(u8 *data, u8 *bssid)
{
if (get_from_ds(data) == 1)
get_address2(data, bssid);
else if (get_to_ds(data) == 1)
get_address1(data, bssid);
else
get_address3(data, bssid);
}
/* This function extracts the SSID from a beacon/probe response frame */
static inline void get_ssid(u8 *data, u8 *ssid, u8 *p_ssid_len)
{
u8 len = 0;
u8 i = 0;
u8 j = 0;
len = data[MAC_HDR_LEN + TIME_STAMP_LEN + BEACON_INTERVAL_LEN +
CAP_INFO_LEN + 1];
j = MAC_HDR_LEN + TIME_STAMP_LEN + BEACON_INTERVAL_LEN +
CAP_INFO_LEN + 2;
/* If the SSID length field is set wrongly to a value greater than the */
/* allowed maximum SSID length limit, reset the length to 0 */
if (len >= MAX_SSID_LEN)
len = 0;
for (i = 0; i < len; i++, j++)
ssid[i] = data[j];
ssid[len] = '\0';
*p_ssid_len = len;
}
/* This function extracts the capability info field from the beacon or probe */
/* response frame. */
static inline u16 get_cap_info(u8 *data)
{
u16 cap_info = 0;
u16 index = MAC_HDR_LEN;
enum sub_frame_type st;
st = get_sub_type(data);
/* Location of the Capability field is different for Beacon and */
/* Association frames. */
if ((st == BEACON) || (st == PROBE_RSP))
index += TIME_STAMP_LEN + BEACON_INTERVAL_LEN;
cap_info = data[index];
cap_info |= (data[index + 1] << 8);
return cap_info;
}
/* This function extracts the capability info field from the Association */
/* response frame. */
static inline u16 get_assoc_resp_cap_info(u8 *data)
{
u16 cap_info;
cap_info = data[0];
cap_info |= (data[1] << 8);
return cap_info;
}
/* This function extracts the association status code from the incoming */
/* association response frame and returns association status code */
static inline u16 get_asoc_status(u8 *data)
{
u16 asoc_status;
asoc_status = data[3];
asoc_status = (asoc_status << 8) | data[2];
return asoc_status;
}
/* This function extracts association ID from the incoming association */
/* response frame */
static inline u16 get_asoc_id(u8 *data)
{
u16 asoc_id;
asoc_id = data[4];
asoc_id |= (data[5] << 8);
return asoc_id;
}
u8 *get_tim_elm(u8 *pu8msa, u16 u16RxLen, u16 u16TagParamOffset)
{
u16 u16index;
/*************************************************************************/
/* Beacon Frame - Frame Body */
/* --------------------------------------------------------------------- */
/* |Timestamp |BeaconInt |CapInfo |SSID |SupRates |DSParSet |TIM elm | */
/* --------------------------------------------------------------------- */
/* |8 |2 |2 |2-34 |3-10 |3 |4-256 | */
/* --------------------------------------------------------------------- */
/* */
/*************************************************************************/
u16index = u16TagParamOffset;
/* Search for the TIM Element Field and return if the element is found */
while (u16index < (u16RxLen - FCS_LEN)) {
if (pu8msa[u16index] == ITIM)
return &pu8msa[u16index];
u16index += (IE_HDR_LEN + pu8msa[u16index + 1]);
}
return NULL;
}
/* This function gets the current channel information from
* the 802.11n beacon/probe response frame */
u8 get_current_channel_802_11n(u8 *pu8msa, u16 u16RxLen)
{
u16 index;
index = TAG_PARAM_OFFSET;
while (index < (u16RxLen - FCS_LEN)) {
if (pu8msa[index] == IDSPARMS)
return pu8msa[index + 2];
/* Increment index by length information and header */
index += pu8msa[index + 1] + IE_HDR_LEN;
}
/* Return current channel information from the MIB, if beacon/probe */
/* response frame does not contain the DS parameter set IE */
/* return (mget_CurrentChannel() + 1); */
return 0; /* no MIB here */
}
/**
* @brief parses the received 'N' message
* @details
* @param[in] pu8MsgBuffer The message to be parsed
* @param[out] ppstrNetworkInfo pointer to pointer to the structure containing the parsed Network Info
* @return Error code indicating success/failure
* @note
* @author mabubakr
* @date 1 Mar 2012
* @version 1.0
*/
s32 parse_network_info(u8 *pu8MsgBuffer, tstrNetworkInfo **ppstrNetworkInfo)
{
tstrNetworkInfo *pstrNetworkInfo = NULL;
u8 u8MsgType = 0;
u8 u8MsgID = 0;
u16 u16MsgLen = 0;
u16 u16WidID = (u16)WID_NIL;
u16 u16WidLen = 0;
u8 *pu8WidVal = NULL;
u8MsgType = pu8MsgBuffer[0];
/* Check whether the received message type is 'N' */
if ('N' != u8MsgType) {
PRINT_ER("Received Message format incorrect.\n");
return -EFAULT;
}
/* Extract message ID */
u8MsgID = pu8MsgBuffer[1];
/* Extract message Length */
u16MsgLen = MAKE_WORD16(pu8MsgBuffer[2], pu8MsgBuffer[3]);
/* Extract WID ID */
u16WidID = MAKE_WORD16(pu8MsgBuffer[4], pu8MsgBuffer[5]);
/* Extract WID Length */
u16WidLen = MAKE_WORD16(pu8MsgBuffer[6], pu8MsgBuffer[7]);
/* Assign a pointer to the WID value */
pu8WidVal = &pu8MsgBuffer[8];
/* parse the WID value of the WID "WID_NEWORK_INFO" */
{
u8 *pu8msa = NULL;
u16 u16RxLen = 0;
u8 *pu8TimElm = NULL;
u8 *pu8IEs = NULL;
u16 u16IEsLen = 0;
u8 u8index = 0;
u32 u32Tsf_Lo;
u32 u32Tsf_Hi;
pstrNetworkInfo = kzalloc(sizeof(tstrNetworkInfo), GFP_KERNEL);
if (!pstrNetworkInfo)
return -ENOMEM;
pstrNetworkInfo->s8rssi = pu8WidVal[0];
/* Assign a pointer to msa "Mac Header Start Address" */
pu8msa = &pu8WidVal[1];
u16RxLen = u16WidLen - 1;
/* parse msa*/
/* Get the cap_info */
pstrNetworkInfo->u16CapInfo = get_cap_info(pu8msa);
/* Get time-stamp [Low only 32 bit] */
pstrNetworkInfo->u32Tsf = get_beacon_timestamp_lo(pu8msa);
PRINT_D(CORECONFIG_DBG, "TSF :%x\n", pstrNetworkInfo->u32Tsf);
/* Get full time-stamp [Low and High 64 bit] */
u32Tsf_Lo = get_beacon_timestamp_lo(pu8msa);
u32Tsf_Hi = get_beacon_timestamp_hi(pu8msa);
pstrNetworkInfo->u64Tsf = u32Tsf_Lo | ((u64)u32Tsf_Hi << 32);
/* Get SSID */
get_ssid(pu8msa, pstrNetworkInfo->au8ssid, &pstrNetworkInfo->u8SsidLen);
/* Get BSSID */
get_BSSID(pu8msa, pstrNetworkInfo->au8bssid);
/*
* Extract current channel information from
* the beacon/probe response frame
*/
pstrNetworkInfo->u8channel = get_current_channel_802_11n(pu8msa,
u16RxLen + FCS_LEN);
/* Get beacon period */
u8index = MAC_HDR_LEN + TIME_STAMP_LEN;
pstrNetworkInfo->u16BeaconPeriod = get_beacon_period(pu8msa + u8index);
u8index += BEACON_INTERVAL_LEN + CAP_INFO_LEN;
/* Get DTIM Period */
pu8TimElm = get_tim_elm(pu8msa, u16RxLen + FCS_LEN, u8index);
if (pu8TimElm != NULL)
pstrNetworkInfo->u8DtimPeriod = pu8TimElm[3];
pu8IEs = &pu8msa[MAC_HDR_LEN + TIME_STAMP_LEN + BEACON_INTERVAL_LEN + CAP_INFO_LEN];
u16IEsLen = u16RxLen - (MAC_HDR_LEN + TIME_STAMP_LEN + BEACON_INTERVAL_LEN + CAP_INFO_LEN);
if (u16IEsLen > 0) {
pstrNetworkInfo->pu8IEs = kmemdup(pu8IEs, u16IEsLen,
GFP_KERNEL);
if (!pstrNetworkInfo->pu8IEs)
return -ENOMEM;
}
pstrNetworkInfo->u16IEsLen = u16IEsLen;
}
*ppstrNetworkInfo = pstrNetworkInfo;
return 0;
}
/**
* @brief Deallocates the parsed Network Info
* @details
* @param[in] pstrNetworkInfo Network Info to be deallocated
* @return Error code indicating success/failure
* @note
* @author mabubakr
* @date 1 Mar 2012
* @version 1.0
*/
s32 DeallocateNetworkInfo(tstrNetworkInfo *pstrNetworkInfo)
{
s32 s32Error = 0;
if (pstrNetworkInfo != NULL) {
if (pstrNetworkInfo->pu8IEs != NULL) {
kfree(pstrNetworkInfo->pu8IEs);
pstrNetworkInfo->pu8IEs = NULL;
} else {
s32Error = -EFAULT;
}
kfree(pstrNetworkInfo);
pstrNetworkInfo = NULL;
} else {
s32Error = -EFAULT;
}
return s32Error;
}
/**
* @brief parses the received Association Response frame
* @details
* @param[in] pu8Buffer The Association Response frame to be parsed
* @param[out] ppstrConnectRespInfo pointer to pointer to the structure containing the parsed Association Response Info
* @return Error code indicating success/failure
* @note
* @author mabubakr
* @date 2 Apr 2012
* @version 1.0
*/
s32 ParseAssocRespInfo(u8 *pu8Buffer, u32 u32BufferLen,
tstrConnectRespInfo **ppstrConnectRespInfo)
{
s32 s32Error = 0;
tstrConnectRespInfo *pstrConnectRespInfo = NULL;
u16 u16AssocRespLen = 0;
u8 *pu8IEs = NULL;
u16 u16IEsLen = 0;
pstrConnectRespInfo = kzalloc(sizeof(tstrConnectRespInfo), GFP_KERNEL);
if (!pstrConnectRespInfo)
return -ENOMEM;
/* u16AssocRespLen = pu8Buffer[0]; */
u16AssocRespLen = (u16)u32BufferLen;
/* get the status code */
pstrConnectRespInfo->u16ConnectStatus = get_asoc_status(pu8Buffer);
if (pstrConnectRespInfo->u16ConnectStatus == SUCCESSFUL_STATUSCODE) {
/* get the capability */
pstrConnectRespInfo->u16capability = get_assoc_resp_cap_info(pu8Buffer);
/* get the Association ID */
pstrConnectRespInfo->u16AssocID = get_asoc_id(pu8Buffer);
/* get the Information Elements */
pu8IEs = &pu8Buffer[CAP_INFO_LEN + STATUS_CODE_LEN + AID_LEN];
u16IEsLen = u16AssocRespLen - (CAP_INFO_LEN + STATUS_CODE_LEN + AID_LEN);
pstrConnectRespInfo->pu8RespIEs = kmemdup(pu8IEs, u16IEsLen, GFP_KERNEL);
if (!pstrConnectRespInfo->pu8RespIEs)
return -ENOMEM;
pstrConnectRespInfo->u16RespIEsLen = u16IEsLen;
}
*ppstrConnectRespInfo = pstrConnectRespInfo;
return s32Error;
}
/**
* @brief Deallocates the parsed Association Response Info
* @details
* @param[in] pstrNetworkInfo Network Info to be deallocated
* @return Error code indicating success/failure
* @note
* @author mabubakr
* @date 2 Apr 2012
* @version 1.0
*/
s32 DeallocateAssocRespInfo(tstrConnectRespInfo *pstrConnectRespInfo)
{
s32 s32Error = 0;
if (pstrConnectRespInfo != NULL) {
if (pstrConnectRespInfo->pu8RespIEs != NULL) {
kfree(pstrConnectRespInfo->pu8RespIEs);
pstrConnectRespInfo->pu8RespIEs = NULL;
} else {
s32Error = -EFAULT;
}
kfree(pstrConnectRespInfo);
pstrConnectRespInfo = NULL;
} else {
s32Error = -EFAULT;
}
return s32Error;
}
/**
* @brief sends certain Configuration Packet based on the input WIDs pstrWIDs
* using driver config layer
*
* @details
* @param[in] pstrWIDs WIDs to be sent in the configuration packet
* @param[in] u32WIDsCount number of WIDs to be sent in the configuration packet
* @param[out] pu8RxResp The received Packet Response
* @param[out] ps32RxRespLen Length of the received Packet Response
* @return Error code indicating success/failure
* @note
* @author mabubakr
* @date 1 Mar 2012
* @version 1.0
*/
s32 send_config_pkt(u8 mode, struct wid *wids, u32 count, u32 drv)
{
s32 counter = 0, ret = 0;
if (mode == GET_CFG) {
for (counter = 0; counter < count; counter++) {
PRINT_INFO(CORECONFIG_DBG, "Sending CFG packet [%d][%d]\n", !counter,
(counter == count - 1));
if (!wilc_wlan_cfg_get(!counter,
wids[counter].id,
(counter == count - 1),
drv)) {
ret = -1;
printk("[Sendconfigpkt]Get Timed out\n");
break;
}
}
counter = 0;
for (counter = 0; counter < count; counter++) {
wids[counter].size = wilc_wlan_cfg_get_val(
wids[counter].id,
wids[counter].val,
wids[counter].size);
}
} else if (mode == SET_CFG) {
for (counter = 0; counter < count; counter++) {
PRINT_D(CORECONFIG_DBG, "Sending config SET PACKET WID:%x\n", wids[counter].id);
if (!wilc_wlan_cfg_set(!counter,
wids[counter].id,
wids[counter].val,
wids[counter].size,
(counter == count - 1),
drv)) {
ret = -1;
printk("[Sendconfigpkt]Set Timed out\n");
break;
}
}
}
return ret;
}
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