sys/net/netmap.h

108  * + NIOCREGIF can request the allocation of extra spare buffers from
118  * + NIOCREGIF can request space for extra rings (and buffers)
123  * + NIOCREGIF can attach to PIPE rings sharing the same memory
129  * + NIOCREGIF can also attach to 'monitor' rings that replicate
338 	 * The area is filled up by the kernel on NIOCREGIF,
345 #ifndef NIOCREGIF
350  *	whose identity is set in NIOCREGIF through nr_ringid.
359  * NIOCREGIF takes an interface name within a struct nmre,
362  * The argument to NIOCGINFO/NIOCREGIF overlays struct ifreq so we
367  * The following are used in NIOCREGIF when nr_cmd == 0:
499 	uint16_t	nr_arg1;	/* reserve extra rings in NIOCREGIF */
503 	uint32_t	nr_arg3;	/* req. extra buffers in NIOCREGIF */
533 #define NIOCREGIF	_IOWR('i', 146, struct nmreq) /* interface register */
537 #endif /* !NIOCREGIF */