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dot11 timer functions introduced.

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FossilOrigin-Name: c178ea605edf092e928f73799eb7ae8d27b8cda3f0aac6da490dc345740ca24a
This commit is contained in:
7u83@mail.ru 2016-03-25 10:50:40 +00:00
parent 28a1e50d6b
commit f6e923536e
2 changed files with 80 additions and 8 deletions
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15
src/cw/dot11.c
View File

@ -2,6 +2,12 @@
#include "dot11.h"
uint64_t dot11_timer_offset=0;
const unsigned char dot11_tab_br[] =
{
0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
@ -22,3 +28,12 @@ const unsigned char dot11_tab_br[] =
0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF, 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF
};
const char * dot11_type_strings[]=
{
"Assoc Req",
"Assoc Resp",
"ReAssoc Req",
"ReAssoc Resp",
"Probe Req",
"Probe Resp"
};

73
src/cw/dot11.h
View File

@ -1,8 +1,41 @@
#ifndef __DOT11_H
#define __DOT11_H
/**
* @file
* @brief Definitions and protoypes for 802.11
*
* @defgroup DOT11
* @{
*/
#include <stdint.h>
#include <string.h>
#include <sys/time.h>
#define DOT11_T_MGM 0b00
#define DOT11_T_CTL 0b01
#define DOT11_T_DTA 0b10
#define DOT11_T_RES 0b11
#define dot11_fc_mgm(subtype) (DOT11_T_MGM << 2 | subtype(<<4))
#define DOT11_FC_ASSOC_REQ dot11_fc_mgm(0b0000)
#define DOT11_FC_ASSOC_RESP dot11_fc_mgm(0b0001)
#define DOT11_FC_REASSOC_REQ dot11_fc_mgm(0b0010)
#define DOT11_FC_REASSOC_RESP dot11_fc_mgm(0b0011)
#define DOT11_FC_PROBE_REQ dot11_fc_mgm(0b0100)
#define DOT11_FC_PROBE_RESP dot11_fc_mgm(0b0101)
#define DOT11_FC_TIMING_ADV dot11_fc_mgm(0b0110)
#define DOT11_FC_MGM_RES111 dot11_fc_mgm(0b0111)
#define DOT11_FC_BEACON dot11_fc_mgm(0b1000)
extern const uint8_t dot11_tab_br[256];
@ -13,8 +46,8 @@ extern const uint8_t dot11_tab_br[256];
static inline int dot11_put_word(uint8_t *ptr,uint16_t w)
{
dot11_put_byte(ptr,w&0xff);
dot11_put_byte(ptr+1,w>>8);
dot11_put_byte(ptr+1,w&0xff);
dot11_put_byte(ptr,w>>8);
return 2;
}
@ -38,18 +71,18 @@ static inline uint16_t dot11_get_word(uint8_t *ptr)
#define dot11_get_duration(frame) dot11_get_word(frame+2)
static inline void dot11_get_address(uint8_t * dst, uint8_t *frame, int field)
static inline void dot11_get_address(uint8_t * dst, uint8_t *frame)
{
uint8_t *s = frame+4+field*6;
memcpy(dst,s,6);
memcpy(dst,frame,6);
}
#define dot11_get_address1(dst,frame) dot11_get_address(dst,frame,0)
#define dot11_get_address2(dst,frame) dot11_get_address(dst,frame,1)
#define dot11_get_address3(dst,frame) dot11_get_address(dst,frame,2)
#define dot11_get_address1(dst,frame) dot11_get_address(dst,frame+4)
#define dot11_get_address2(dst,frame) dot11_get_address(dst,frame+4*2*6)
#define dot11_get_address3(dst,frame) dot11_get_address(dst,frame+4*3*6)
#define dot11_get_sequence_control(frame) dot11_get_word(frame+22)
#define DOT11_FC_FLAG_FROM_DS 0x100
#define DOT11_FC_FLAG_TO_DS 0x200
#define DOT11_FC_FLAG_MOREFRAGS 0x400
@ -67,4 +100,28 @@ static inline void dot11_get_address(uint8_t * dst, uint8_t *frame, int field)
#define dot11_fc_get_more_fragments(fc) (fc&DOT11_FC_FLAG_MOREFRAGS?1:0)
#define dot11_fc_put_frame_control(dst,fc) dot11_put_word(dst,fc)
extern uint64_t dot11_timer_offset;
static inline uint64_t dot11_timer_get(){
struct timeval tv;
gettimeofday(&tv, NULL);
return 1000000 * tv.tv_sec + tv.tv_usec - dot11_timer_offset;
}
static inline void dot11_timer_set(uint64_t val) {
struct timeval tv;
gettimeofday(&tv, NULL);
dot11_timer_offset = 1000000 * tv.tv_sec + tv.tv_usec - val;
}
/**
* @}
*/
#endif