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enum
{
MaxEther = 4,
Ntypes = 8,
};
typedef struct Ether Ether;
struct Ether {
RWlock;
ISAConf; /* hardware info */
int ctlrno;
ulong tbdf;
int minmtu;
int maxmtu;
Netif;
void (*attach)(Ether*); /* filled in by reset routine */
void (*detach)(Ether*);
void (*transmit)(Ether*);
void (*interrupt)(Ureg*, void*);
long (*ifstat)(Ether*, void*, long, ulong);
long (*ctl)(Ether*, void*, long); /* custom ctl messages */
void (*power)(Ether*, int); /* power on/off */
void (*shutdown)(Ether*); /* shutdown hardware before reboot */
void* ctlr;
uchar ea[Eaddrlen];
void* address;
int irq;
Queue* oq;
};
extern Block* etheriq(Ether*, Block*, int);
extern void addethercard(char*, int(*)(Ether*));
extern ulong ethercrc(uchar*, int);
extern int parseether(uchar*, char*);
#define NEXT(x, l) (((x)+1)%(l))
#define PREV(x, l) (((x) == 0) ? (l)-1: (x)-1)
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