typedef struct Wkey Wkey;

typedef struct Wkey Wkey;
typedef struct Wnode Wnode;
typedef struct Wifi Wifi;
typedef struct Wifipkt Wifipkt;
typedef struct DMAT DMAT;
typedef struct DMTE DMTE;

enum {
Essidlen = 32,
};

/* cipher */
enum {
TKIP = 1,
CCMP = 2,
};

struct Wkey
{
int cipher;
int len;
uvlong tsc;
uchar key[];
};

struct Wnode
{
uchar bssid[Eaddrlen];
char ssid[Essidlen+2];

char *status;

int rsnelen;
uchar rsne[258];
Wkey *txkey[1];
Wkey *rxkey[5];

int aid; /* association id */
ulong lastsend;
ulong lastseen;

uchar *minrate; /* pointers into wifi->rates */
uchar *maxrate;
uchar *actrate;

ulong validrates; /* bitmap on wifi->rates */
ulong basicrates;

ulong txcount; /* statistics for rate adaption */
ulong txerror;

/* stuff from beacon */
int ival;
int cap;
int channel;
int brsnelen;
uchar brsne[258];
};

struct DMTE
{
uchar ip[16];
uchar mac[6];
uchar valid;
};

struct DMAT
{
DMTE tab[127]; /* prime */
uvlong map;
};

struct Wifi
{
Ether *ether;

int debug;

RWlock crypt;
Queue *iq;
ulong watchdog;
ulong lastauth;
Ref txseq;
void (*transmit)(Wifi*, Wnode*, Block*);

/* for searching */
uchar bssid[Eaddrlen];
char essid[Essidlen+2];

/* supported data rates by hardware */
uchar *rates;

/* effective base station */
Wnode *bss;

Wnode node[32];

DMAT dmat;
};

struct Wifipkt
{
uchar fc[2];
uchar dur[2];
uchar a1[Eaddrlen];
uchar a2[Eaddrlen];
uchar a3[Eaddrlen];
uchar seq[2];
uchar a4[Eaddrlen];
};

Wifi *wifiattach(Ether *ether, void (*transmit)(Wifi*, Wnode*, Block*));
void wifiiq(Wifi*, Block*);
int wifihdrlen(Wifipkt*);
void wifitxfail(Wifi*, Block*);

long wifistat(Wifi*, void*, long, ulong);
long wifictl(Wifi*, void*, long);
void wificfg(Wifi*, char*);