ref: dff1e3813fb0deb18ca790b7c28f6a1405720ff6
dir: /sys/src/9/sgi/etherif.h/
enum { MaxEther = 1, Ntypes = 8, }; typedef struct Ether Ether; struct Ether { int ctlrno; int minmtu; int maxmtu; uchar ea[Eaddrlen]; int irq, irqlevel; uintptr port; 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; 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))