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/*
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 * ATA-over-Ethernet (AoE) protocol
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 */
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enum {
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	ACata,
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	ACconfig,
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};
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enum {
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	AQCread,
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	AQCtest,
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	AQCprefix,
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	AQCset,
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	AQCfset,
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};
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enum {
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	AEcmd	= 1,
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	AEarg,
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	AEdev,
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	AEcfg,
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	AEver,
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};
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enum {
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	Aoetype	= 0x88a2,
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	Aoesectsz = 512,			/* standard sector size */
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	Aoever	= 1,
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	AFerr	= 1<<2,
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	AFrsp	= 1<<3,
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	AAFwrite= 1,
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	AAFext	= 1<<6,
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};
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typedef struct {
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	uchar	dst[Eaddrlen];
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	uchar	src[Eaddrlen];
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	uchar	type[2];
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	uchar	verflag;
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	uchar	error;
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	uchar	major[2];
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	uchar	minor;
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	uchar	cmd;
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	uchar	tag[4];
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	uchar	payload[];
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} Aoehdr;
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#define AOEHDRSZ	offsetof(Aoehdr, payload[0])
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typedef struct {
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	Aoehdr;
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	uchar	aflag;
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	uchar	errfeat;
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	uchar	scnt;
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	uchar	cmdstat;
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	uchar	lba[6];
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	uchar	res[2];
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	uchar	payload[];
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} Aoeata;
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#define AOEATASZ	offsetof(Aoeata, payload[0])
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typedef struct {
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	Aoehdr;
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	uchar	bufcnt[2];
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	uchar	fwver[2];
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	uchar	scnt;
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	uchar	verccmd;
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	uchar	cslen[2];
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	uchar	payload[];
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} Aoeqc;
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#define AOEQCSZ		offsetof(Aoeqc, payload[0])