/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ enum {	MaxEther	= 2,	Ntypes		= 8,}; typedef struct Ether Ether;struct Ether {	int	ctlrno;	int	port;	int	irq;	int	tbdf;			/* type+busno+devno+funcno */ 	void	*ctlr;	Queue*	oq;	uchar	ea[Eaddrlen]; 	long	(*ifstat)(Ether*, void*, long, ulong);#ifdef MULTIETHERTYPES	void	(*attach)(Ether*);	/* filled in by reset routine */	void	(*detach)(Ether*);	void	(*transmit)(Ether*);	void	(*interrupt)(Ureg*, void*);	long 	(*ctl)(Ether*, void*, long); /* custom ctl messages */	void	(*power)(Ether*, int);	/* power on/off */	void	(*shutdown)(Ether*);	/* shutdown hardware before reboot */#endif	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)