/*
 * 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	= 48,
	Ntypes		= 8,
};

typedef struct Ether Ether;
struct Ether {
	ISAConf ISAConf;			/* hardware info */

	int	ctlrno;
	int	tbdf;			/* type+busno+devno+funcno */
	uint8_t	ea[Eaddrlen];

	void	(*attach)(Ether*);	/* filled in by reset routine */
	void	(*detach)(Ether*);
	void	(*transmit)(Ether*);
	void	(*interrupt)(Ureg*, void*);
	int32_t	(*ifstat)(Ether*, void*, int32_t, uint32_t);
	int32_t 	(*ctl)(Ether*, void*, int32_t); /* custom ctl messages */
	void	(*power)(Ether*, int);	/* power on/off */
	void	(*shutdown)(Ether*);	/* shutdown hardware before reboot */
	void	*ctlr;

	Queue*	oq;

	Netif Netif;
};

extern Block* etheriq(Ether*, Block*, int);
extern void addethercard(char*, int(*)(Ether*));
extern uint32_t ethercrc(unsigned char*, int);
extern int parseether(unsigned char*, char*);

#define NEXT(x, l)	(((x)+1)%(l))
#define PREV(x, l)	(((x) == 0) ? (l)-1: (x)-1)