ref: a7b1ab8236b7ccd41e96e9e4008cbc3213294724
dir: /etherif.h/
enum {
MaxEther = 1,
Ntypes = 8,
};
typedef struct Ether Ether;
struct Ether {
int ctlrno;
int minmtu;
int maxmtu;
uchar ea[Eaddrlen];
int irq0;
int irqn;
uintptr port;
void (*attach)(Ether*); /* filled in by reset routine */
void (*detach)(Ether*);
void (*transmit)(Ether*);
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;
Queue* oq;
Netif;
};
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)
#define HOWMANY(x, y) (((x)+((y)-1))/(y))
#define ROUNDUP(x, y) (HOWMANY((x), (y))*(y))