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path: root/include/net/firewire.h
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#ifndef _NET_FIREWIRE_H
#define _NET_FIREWIRE_H

/* Pseudo L2 address */
#define FWNET_ALEN	16
union fwnet_hwaddr {
	u8 u[FWNET_ALEN];
	/* "Hardware address" defined in RFC2734/RF3146 */
	struct {
		__be64 uniq_id;		/* EUI-64			*/
		u8 max_rec;		/* max packet size		*/
		u8 sspd;		/* max speed			*/
		__be16 fifo_hi;		/* hi 16bits of FIFO addr	*/
		__be32 fifo_lo;		/* lo 32bits of FIFO addr	*/
	} __packed uc;
};

/* Pseudo L2 Header */
#define FWNET_HLEN	18
struct fwnet_header {
	u8 h_dest[FWNET_ALEN];	/* destination address */
	__be16 h_proto;		/* packet type ID field */
} __packed;

#endif
3d371f70792f30380d4e44805250&id2=1dec78585328db00e33fb18dc1a6deed0e2095a5'>diff)
ARC: syscall for userspace cmpxchg assist
Older ARC700 cores (ARC750 specifically) lack instructions to implement atomic r-w-w. This is problematic for userspace libraries such as NPTL which need atomic primitives. So enable them by providing kernel assist. This is costly but really the only sane soluton (othern than tight spinning using the otherwise availiable atomic exchange EX instruciton). Good thing is there are only a few of these cores running Linux out in the wild. This only works on UP systems. Reviewed-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'Documentation')