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// SPDX-License-Identifier: GPL-2.0
#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)
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
};
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
};
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
};
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;
}
static inline enum sub_frame_type get_sub_type(u8 *header)
{
return ((enum sub_frame_type)(header[0] & 0xFC));
}
static inline u8 get_to_ds(u8 *header)
{
return (header[1] & 0x01);
}
static inline u8 get_from_ds(u8 *header)
{
return ((header[1] & 0x02) >> 1);
}
static inline void get_address1(u8 *pu8msa, u8 *addr)
{
memcpy(addr, pu8msa + 4, 6);
}
static inline void get_address2(u8 *pu8msa, u8 *addr)
{
memcpy(addr, pu8msa + 10, 6);
}
static inline void get_address3(u8 *pu8msa, u8 *addr)
{
memcpy(addr, pu8msa + 16, 6);
}
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);
}
static inline void get_ssid(u8 *data, u8 *ssid, u8 *p_ssid_len)
{
u8 len = 0;
u8 i = 0;
u8 j = 0;
len = data[TAG_PARAM_OFFSET + 1];
j = TAG_PARAM_OFFSET + 2;
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;
}
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);
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;
}
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;
}
static inline u16 get_asoc_status(u8 *data)
{
u16 asoc_status;
asoc_status = data[3];
return (asoc_status << 8) | data[2];
}
static inline u16 get_asoc_id(u8 *data)
{
u16 asoc_id;
asoc_id = data[4];
asoc_id |= (data[5] << 8);
return asoc_id;
}
static u8 *get_tim_elm(u8 *pu8msa, u16 rx_len, u16 tag_param_offset)
{
u16 index;
index = tag_param_offset;
while (index < (rx_len - FCS_LEN)) {
if (pu8msa[index] == ITIM)
return &pu8msa[index];
index += (IE_HDR_LEN + pu8msa[index + 1]);
}
return NULL;
}
static u8 get_current_channel_802_11n(u8 *pu8msa, u16 rx_len)
{
u16 index;
index = TAG_PARAM_OFFSET;
while (index < (rx_len - FCS_LEN)) {
if (pu8msa[index] == IDSPARMS)
return pu8msa[index + 2];
index += pu8msa[index + 1] + IE_HDR_LEN;
}
return 0;
}
s32 wilc_parse_network_info(u8 *msg_buffer,
struct network_info **ret_network_info)
{
struct network_info *network_info = NULL;
u8 msg_type = 0;
u8 msg_id = 0;
u16 msg_len = 0;
u16 wid_id = (u16)WID_NIL;
u16 wid_len = 0;
u8 *wid_val = NULL;
msg_type = msg_buffer[0];
if ('N' != msg_type)
return -EFAULT;
msg_id = msg_buffer[1];
msg_len = MAKE_WORD16(msg_buffer[2], msg_buffer[3]);
wid_id = MAKE_WORD16(msg_buffer[4], msg_buffer[5]);
wid_len = MAKE_WORD16(msg_buffer[6], msg_buffer[7]);
wid_val = &msg_buffer[8];
{
u8 *msa = NULL;
u16 rx_len = 0;
u8 *tim_elm = NULL;
u8 *ies = NULL;
u16 ies_len = 0;
u8 index = 0;
u32 tsf_lo;
u32 tsf_hi;
network_info = kzalloc(sizeof(*network_info), GFP_KERNEL);
if (!network_info)
return -ENOMEM;
network_info->rssi = wid_val[0];
msa = &wid_val[1];
rx_len = wid_len - 1;
network_info->cap_info = get_cap_info(msa);
network_info->tsf_lo = get_beacon_timestamp_lo(msa);
tsf_lo = get_beacon_timestamp_lo(msa);
tsf_hi = get_beacon_timestamp_hi(msa);
network_info->tsf_hi = tsf_lo | ((u64)tsf_hi << 32);
get_ssid(msa, network_info->ssid, &network_info->ssid_len);
get_BSSID(msa, network_info->bssid);
network_info->ch = get_current_channel_802_11n(msa,
rx_len + FCS_LEN);
index = MAC_HDR_LEN + TIME_STAMP_LEN;
network_info->beacon_period = get_beacon_period(msa + index);
index += BEACON_INTERVAL_LEN + CAP_INFO_LEN;
tim_elm = get_tim_elm(msa, rx_len + FCS_LEN, index);
if (tim_elm)
network_info->dtim_period = tim_elm[3];
ies = &msa[TAG_PARAM_OFFSET];
ies_len = rx_len - TAG_PARAM_OFFSET;
if (ies_len > 0) {
network_info->ies = kmemdup(ies, ies_len, GFP_KERNEL);
if (!network_info->ies) {
kfree(network_info);
return -ENOMEM;
}
}
network_info->ies_len = ies_len;
}
*ret_network_info = network_info;
return 0;
}
s32 wilc_parse_assoc_resp_info(u8 *buffer, u32 buffer_len,
struct connect_resp_info **ret_connect_resp_info)
{
struct connect_resp_info *connect_resp_info = NULL;
u16 assoc_resp_len = 0;
u8 *ies = NULL;
u16 ies_len = 0;
connect_resp_info = kzalloc(sizeof(*connect_resp_info), GFP_KERNEL);
if (!connect_resp_info)
return -ENOMEM;
assoc_resp_len = (u16)buffer_len;
connect_resp_info->status = get_asoc_status(buffer);
if (connect_resp_info->status == SUCCESSFUL_STATUSCODE) {
connect_resp_info->capability = get_assoc_resp_cap_info(buffer);
connect_resp_info->assoc_id = get_asoc_id(buffer);
ies = &buffer[CAP_INFO_LEN + STATUS_CODE_LEN + AID_LEN];
ies_len = assoc_resp_len - (CAP_INFO_LEN + STATUS_CODE_LEN +
AID_LEN);
connect_resp_info->ies = kmemdup(ies, ies_len, GFP_KERNEL);
if (!connect_resp_info->ies) {
kfree(connect_resp_info);
return -ENOMEM;
}
connect_resp_info->ies_len = ies_len;
}
*ret_connect_resp_info = connect_resp_info;
return 0;
}
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