ref: 281729551fd7351b410f788d267c9041ae1ef15f
dir: /sys/src/9/mtx/etherif.h/
enum {
MaxEther = 24,
Ntypes = 8,
};
typedef struct Ether Ether;
struct Ether {
ISAConf; /* hardware info */
int ctlrno;
int tbdf; /* type+busno+devno+funcno */
int minmtu;
int maxmtu;
uchar ea[Eaddrlen];
void (*attach)(Ether*); /* filled in by reset routine */
void (*transmit)(Ether*);
void (*interrupt)(Ureg*, void*);
long (*ifstat)(Ether*, void*, long, ulong);
long (*ctl)(Ether*, void*, long); /* custom ctl messages */
void *ctlr;
Queue* oq;
Netif;
};
extern Block* etheriq(Ether*, Block*, int);
extern void addethercard(char*, int(*)(Ether*));
extern ulong ethercrc(uchar*, int);
#define NEXT(x, l) (((x)+1)%(l))
#define PREV(x, l) (((x) == 0) ? (l)-1: (x)-1)
#define HOWMANY(x, y) (((x)+((y)-1))/(y))
#define ROUNDUP(x, y) (HOWMANY((x), (y))*(y))