misc: deprecate netmap and ixge drivers

Both are out of sync for long time...

Type: refactor

Change-Id: I7de3170d35330fc172501d87655dfef91998b8fe
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 0 insertions, 650 deletions

diff --git a/src/vnet/devices/netmap/net_netmap.h b/src/vnet/devices/netmap/net_netmap.h
deleted file mode 100644
index fd4253b7c0c..00000000000
--- a/src/vnet/devices/netmap/net_netmap.h
+++ /dev/null
@@ -1,650 +0,0 @@
-/*
- * Copyright (C) 2011-2014 Matteo Landi, Luigi Rizzo. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- *   1. Redistributions of source code must retain the above copyright
- *      notice, this list of conditions and the following disclaimer.
- *   2. Redistributions in binary form must reproduce the above copyright
- *      notice, this list of conditions and the following disclaimer in the
- *      documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``S IS''AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*
- * $FreeBSD: head/sys/net/netmap.h 251139 2013-05-30 14:07:14Z luigi $
- *
- * Definitions of constants and the structures used by the netmap
- * framework, for the part visible to both kernel and userspace.
- * Detailed info on netmap is available with "man netmap" or at
- *
- *	http://info.iet.unipi.it/~luigi/netmap/
- *
- * This API is also used to communicate with the VALE software switch
- */
-
-#ifndef _NET_NETMAP_H_
-#define _NET_NETMAP_H_
-
-#define	NETMAP_API	11		/* current API version */
-
-#define	NETMAP_MIN_API	11		/* min and max versions accepted */
-#define	NETMAP_MAX_API	15
-/*
- * Some fields should be cache-aligned to reduce contention.
- * The alignment is architecture and OS dependent, but rather than
- * digging into OS headers to find the exact value we use an estimate
- * that should cover most architectures.
- */
-#define NM_CACHE_ALIGN	128
-
-/*
- * --- Netmap data structures ---
- *
- * The userspace data structures used by netmap are shown below.
- * They are allocated by the kernel and mmap()ed by userspace threads.
- * Pointers are implemented as memory offsets or indexes,
- * so that they can be easily dereferenced in kernel and userspace.
-
-   KERNEL (opaque, obviously)
-
-  ====================================================================
-                                         |
-   USERSPACE                             |      struct netmap_ring
-                                         +---->+---------------+
-                                             / | head,cur,tail |
-   struct netmap_if (nifp, 1 per fd)        /  | buf_ofs       |
-    +---------------+                      /   | other fields  |
-    | ni_tx_rings   |                     /    +===============+
-    | ni_rx_rings   |                    /     | buf_idx, len  | slot[0]
-    |               |                   /      | flags, ptr    |
-    |               |                  /       +---------------+
-    +===============+                 /        | buf_idx, len  | slot[1]
-    | txring_ofs[0] | (rel.to nifp)--'         | flags, ptr    |
-    | txring_ofs[1] |                          +---------------+
-     (tx+1 entries)                           (num_slots entries)
-    | txring_ofs[t] |                          | buf_idx, len  | slot[n-1]
-    +---------------+                          | flags, ptr    |
-    | rxring_ofs[0] |                          +---------------+
-    | rxring_ofs[1] |
-     (rx+1 entries)
-    | rxring_ofs[r] |
-    +---------------+
-
- * For each "interface" (NIC, host stack, PIPE, VALE switch port) bound to
- * a file descriptor, the mmap()ed region contains a (logically readonly)
- * struct netmap_if pointing to struct netmap_ring's.
- *
- * There is one netmap_ring per physical NIC ring, plus one tx/rx ring
- * pair attached to the host stack (this pair is unused for non-NIC ports).
- *
- * All physical/host stack ports share the same memory region,
- * so that zero-copy can be implemented between them.
- * VALE switch ports instead have separate memory regions.
- *
- * The netmap_ring is the userspace-visible replica of the NIC ring.
- * Each slot has the index of a buffer (MTU-sized and residing in the
- * mmapped region), its length and some flags. An extra 64-bit pointer
- * is provided for user-supplied buffers in the tx path.
- *
- * In user space, the buffer address is computed as
- *	(char *)ring + buf_ofs + index * NETMAP_BUF_SIZE
- *
- * Added in NETMAP_API 11:
- *
- * + NIOCREGIF can request the allocation of extra spare buffers from
- *   the same memory pool. The desired number of buffers must be in
- *   nr_arg3. The ioctl may return fewer buffers, depending on memory
- *   availability. nr_arg3 will return the actual value, and, once
- *   mapped, nifp->ni_bufs_head will be the index of the first buffer.
- *
- *   The buffers are linked to each other using the first uint32_t
- *   as the index. On close, ni_bufs_head must point to the list of
- *   buffers to be released.
- *
- * + NIOCREGIF can request space for extra rings (and buffers)
- *   allocated in the same memory space. The number of extra rings
- *   is in nr_arg1, and is advisory. This is a no-op on NICs where
- *   the size of the memory space is fixed.
- *
- * + NIOCREGIF can attach to PIPE rings sharing the same memory
- *   space with a parent device. The ifname indicates the parent device,
- *   which must already exist. Flags in nr_flags indicate if we want to
- *   bind the master or slave side, the index (from nr_ringid)
- *   is just a cookie and does not need to be sequential.
- *
- * + NIOCREGIF can also attach to 'monitor' rings that replicate
- *   the content of specific rings, also from the same memory space.
- *
- *   Extra flags in nr_flags support the above functions.
- *   Application libraries may use the following naming scheme:
- *	netmap:foo			all NIC ring pairs
- *	netmap:foo^			only host ring pair
- *	netmap:foo+			all NIC ring + host ring pairs
- *	netmap:foo-k			the k-th NIC ring pair
- *	netmap:foo{k			PIPE ring pair k, master side
- *	netmap:foo}k			PIPE ring pair k, slave side
- */
-
-/*
- * struct netmap_slot is a buffer descriptor
- */
-struct netmap_slot {
-	uint32_t buf_idx;	/* buffer index */
-	uint16_t len;		/* length for this slot */
-	uint16_t flags;		/* buf changed, etc. */
-	uint64_t ptr;		/* pointer for indirect buffers */
-};
-
-/*
- * The following flags control how the slot is used
- */
-
-#define	NS_BUF_CHANGED	0x0001	/* buf_idx changed */
-	/*
-	 * must be set whenever buf_idx is changed (as it might be
-	 * necessary to recompute the physical address and mapping)
-	 *
-	 * It is also set by the kernel whenever the buf_idx is
-	 * changed internally (e.g., by pipes). Applications may
-	 * use this information to know when they can reuse the
-	 * contents of previously prepared buffers.
-	 */
-
-#define	NS_REPORT	0x0002	/* ask the hardware to report results */
-	/*
-	 * Request notification when slot is used by the hardware.
-	 * Normally transmit completions are handled lazily and
-	 * may be unreported. This flag lets us know when a slot
-	 * has been sent (e.g. to terminate the sender).
-	 */
-
-#define	NS_FORWARD	0x0004	/* pass packet 'forward' */
-	/*
-	 * (Only for physical ports, rx rings with NR_FORWARD set).
-	 * Slot released to the kernel (i.e. before ring->head) with
-	 * this flag set are passed to the peer ring (host/NIC),
-	 * thus restoring the host-NIC connection for these slots.
-	 * This supports efficient traffic monitoring or firewalling.
-	 */
-
-#define	NS_NO_LEARN	0x0008	/* disable bridge learning */
- 	/*
-	 * On a VALE switch, do not 'learn' the source port for
- 	 * this buffer.
-	 */
-
-#define	NS_INDIRECT	0x0010	/* userspace buffer */
- 	/*
-	 * (VALE tx rings only) data is in a userspace buffer,
-	 * whose address is in the 'ptr' field in the slot.
-	 */
-
-#define	NS_MOREFRAG	0x0020	/* packet has more fragments */
- 	/*
-	 * (VALE ports only)
-	 * Set on all but the last slot of a multi-segment packet.
-	 * The 'len' field refers to the individual fragment.
-	 */
-
-#define	NS_PORT_SHIFT	8
-#define	NS_PORT_MASK	(0xff << NS_PORT_SHIFT)
-	/*
- 	 * The high 8 bits of the flag, if not zero, indicate the
-	 * destination port for the VALE switch, overriding
- 	 * the lookup table.
- 	 */
-
-#define	NS_RFRAGS(_slot)	( ((_slot)->flags >> 8) & 0xff)
-	/*
-	 * (VALE rx rings only) the high 8 bits
-	 *  are the number of fragments.
-	 */
-
-
-/*
- * struct netmap_ring
- *
- * Netmap representation of a TX or RX ring (also known as "queue").
- * This is a queue implemented as a fixed-size circular array.
- * At the software level the important fields are: head, cur, tail.
- *
- * In TX rings:
- *
- *	head	first slot available for transmission.
- *	cur	wakeup point. select() and poll() will unblock
- *		when 'tail' moves past 'cur'
- *	tail	(readonly) first slot reserved to the kernel
- *
- *	[head .. tail-1] can be used for new packets to send;
- *	'head' and 'cur' must be incremented as slots are filled
- *	    with new packets to be sent;
- *	'cur' can be moved further ahead if we need more space
- *	for new transmissions. XXX todo (2014-03-12)
- *
- * In RX rings:
- *
- *	head	first valid received packet
- *	cur	wakeup point. select() and poll() will unblock
- *		when 'tail' moves past 'cur'
- *	tail	(readonly) first slot reserved to the kernel
- *
- *	[head .. tail-1] contain received packets;
- *	'head' and 'cur' must be incremented as slots are consumed
- *		and can be returned to the kernel;
- *	'cur' can be moved further ahead if we want to wait for
- *		new packets without returning the previous ones.
- *
- * DATA OWNERSHIP/LOCKING:
- *	The netmap_ring, and all slots and buffers in the range
- *	[head .. tail-1] are owned by the user program;
- *	the kernel only accesses them during a netmap system call
- *	and in the user thread context.
- *
- *	Other slots and buffers are reserved for use by the kernel
- */
-struct netmap_ring {
-	/*
-	 * buf_ofs is meant to be used through macros.
-	 * It contains the offset of the buffer region from this
-	 * descriptor.
-	 */
-	const int64_t	buf_ofs;
-	const uint32_t	num_slots;	/* number of slots in the ring. */
-	const uint32_t	nr_buf_size;
-	const uint16_t	ringid;
-	const uint16_t	dir;		/* 0: tx, 1: rx */
-
-	uint32_t        head;		/* (u) first user slot */
-	uint32_t        cur;		/* (u) wakeup point */
-	uint32_t	tail;		/* (k) first kernel slot */
-
-	uint32_t	flags;
-
-	struct timeval	ts;		/* (k) time of last *sync() */
-
-	/* opaque room for a mutex or similar object */
-#if !defined(_WIN32) || defined(__CYGWIN__)
-	uint8_t	__attribute__((__aligned__(NM_CACHE_ALIGN))) sem[128];
-#else
-	uint8_t	__declspec(align(NM_CACHE_ALIGN)) sem[128];
-#endif
-
-	/* the slots follow. This struct has variable size */
-	struct netmap_slot slot[0];	/* array of slots. */
-};
-
-
-/*
- * RING FLAGS
- */
-#define	NR_TIMESTAMP	0x0002		/* set timestamp on *sync() */
-	/*
-	 * updates the 'ts' field on each netmap syscall. This saves
-	 * saves a separate gettimeofday(), and is not much worse than
-	 * software timestamps generated in the interrupt handler.
-	 */
-
-#define	NR_FORWARD	0x0004		/* enable NS_FORWARD for ring */
- 	/*
-	 * Enables the NS_FORWARD slot flag for the ring.
-	 */
-
-
-/*
- * Netmap representation of an interface and its queue(s).
- * This is initialized by the kernel when binding a file
- * descriptor to a port, and should be considered as readonly
- * by user programs. The kernel never uses it.
- *
- * There is one netmap_if for each file descriptor on which we want
- * to select/poll.
- * select/poll operates on one or all pairs depending on the value of
- * nmr_queueid passed on the ioctl.
- */
-struct netmap_if {
-	char		ni_name[IFNAMSIZ]; /* name of the interface. */
-	const uint32_t	ni_version;	/* API version, currently unused */
-	const uint32_t	ni_flags;	/* properties */
-#define	NI_PRIV_MEM	0x1		/* private memory region */
-
-	/*
-	 * The number of packet rings available in netmap mode.
-	 * Physical NICs can have different numbers of tx and rx rings.
-	 * Physical NICs also have a 'host' ring pair.
-	 * Additionally, clients can request additional ring pairs to
-	 * be used for internal communication.
-	 */
-	const uint32_t	ni_tx_rings;	/* number of HW tx rings */
-	const uint32_t	ni_rx_rings;	/* number of HW rx rings */
-
-	uint32_t	ni_bufs_head;	/* head index for extra bufs */
-	uint32_t	ni_spare1[5];
-	/*
-	 * The following array contains the offset of each netmap ring
-	 * from this structure, in the following order:
-	 * NIC tx rings (ni_tx_rings); host tx ring (1); extra tx rings;
-	 * NIC rx rings (ni_rx_rings); host tx ring (1); extra rx rings.
-	 *
-	 * The area is filled up by the kernel on NIOCREGIF,
-	 * and then only read by userspace code.
-	 */
-	const ssize_t	ring_ofs[0];
-};
-
-
-#ifndef NIOCREGIF
-/*
- * ioctl names and related fields
- *
- * NIOCTXSYNC, NIOCRXSYNC synchronize tx or rx queues,
- *	whose identity is set in NIOCREGIF through nr_ringid.
- *	These are non blocking and take no argument.
- *
- * NIOCGINFO takes a struct ifreq, the interface name is the input,
- *	the outputs are number of queues and number of descriptor
- *	for each queue (useful to set number of threads etc.).
- *	The info returned is only advisory and may change before
- *	the interface is bound to a file descriptor.
- *
- * NIOCREGIF takes an interface name within a struct nmre,
- *	and activates netmap mode on the interface (if possible).
- *
- * The argument to NIOCGINFO/NIOCREGIF overlays struct ifreq so we
- * can pass it down to other NIC-related ioctls.
- *
- * The actual argument (struct nmreq) has a number of options to request
- * different functions.
- * The following are used in NIOCREGIF when nr_cmd == 0:
- *
- * nr_name	(in)
- *	The name of the port (em0, valeXXX:YYY, etc.)
- *	limited to IFNAMSIZ for backward compatibility.
- *
- * nr_version	(in/out)
- *	Must match NETMAP_API as used in the kernel, error otherwise.
- *	Always returns the desired value on output.
- *
- * nr_tx_slots, nr_tx_slots, nr_tx_rings, nr_rx_rings (in/out)
- *	On input, non-zero values may be used to reconfigure the port
- *	according to the requested values, but this is not guaranteed.
- *	On output the actual values in use are reported.
- *
- * nr_ringid (in)
- *	Indicates how rings should be bound to the file descriptors.
- *	If nr_flags != 0, then the low bits (in NETMAP_RING_MASK)
- *	are used to indicate the ring number, and nr_flags specifies
- *	the actual rings to bind. NETMAP_NO_TX_POLL is unaffected.
- *
- *	NOTE: THE FOLLOWING (nr_flags == 0) IS DEPRECATED:
- *	If nr_flags == 0, NETMAP_HW_RING and NETMAP_SW_RING control
- *	the binding as follows:
- *	0 (default)			binds all physical rings
- *	NETMAP_HW_RING | ring number	binds a single ring pair
- *	NETMAP_SW_RING			binds only the host tx/rx rings
- *
- *	NETMAP_NO_TX_POLL can be OR-ed to make select()/poll() push
- *		packets on tx rings only if POLLOUT is set.
- *		The default is to push any pending packet.
- *
- *	NETMAP_DO_RX_POLL can be OR-ed to make select()/poll() release
- *		packets on rx rings also when POLLIN is NOT set.
- *		The default is to touch the rx ring only with POLLIN.
- *		Note that this is the opposite of TX because it
- *		reflects the common usage.
- *
- *	NOTE: NETMAP_PRIV_MEM IS DEPRECATED, use nr_arg2 instead.
- *	NETMAP_PRIV_MEM is set on return for ports that do not use
- *		the global memory allocator.
- *		This information is not significant and applications
- *		should look at the region id in nr_arg2
- *
- * nr_flags	is the recommended mode to indicate which rings should
- *		be bound to a file descriptor. Values are NR_REG_*
- *
- * nr_arg1 (in)	The number of extra rings to be reserved.
- *		Especially when allocating a VALE port the system only
- *		allocates the amount of memory needed for the port.
- *		If more shared memory rings are desired (e.g. for pipes),
- *		the first invocation for the same basename/allocator
- *		should specify a suitable number. Memory cannot be
- *		extended after the first allocation without closing
- *		all ports on the same region.
- *
- * nr_arg2 (in/out) The identity of the memory region used.
- *		On input, 0 means the system decides autonomously,
- *		other values may try to select a specific region.
- *		On return the actual value is reported.
- *		Region '1' is the global allocator, normally shared
- *		by all interfaces. Other values are private regions.
- *		If two ports the same region zero-copy is possible.
- *
- * nr_arg3 (in/out)	number of extra buffers to be allocated.
- *
- *
- *
- * nr_cmd (in)	if non-zero indicates a special command:
- *	NETMAP_BDG_ATTACH	 and nr_name = vale*:ifname
- *		attaches the NIC to the switch; nr_ringid specifies
- *		which rings to use. Used by vale-ctl -a ...
- *	    nr_arg1 = NETMAP_BDG_HOST also attaches the host port
- *		as in vale-ctl -h ...
- *
- *	NETMAP_BDG_DETACH	and nr_name = vale*:ifname
- *		disconnects a previously attached NIC.
- *		Used by vale-ctl -d ...
- *
- *	NETMAP_BDG_LIST
- *		list the configuration of VALE switches.
- *
- *	NETMAP_BDG_VNET_HDR
- *		Set the virtio-net header length used by the client
- *		of a VALE switch port.
- *
- *	NETMAP_BDG_NEWIF
- *		create a persistent VALE port with name nr_name.
- *		Used by vale-ctl -n ...
- *
- *	NETMAP_BDG_DELIF
- *		delete a persistent VALE port. Used by vale-ctl -d ...
- *
- * nr_arg1, nr_arg2, nr_arg3  (in/out)		command specific
- *
- *
- *
- */
-
-
-/*
- * struct nmreq overlays a struct ifreq (just the name)
- */
-struct nmreq {
-	char		nr_name[IFNAMSIZ];
-	uint32_t	nr_version;	/* API version */
-	uint32_t	nr_offset;	/* nifp offset in the shared region */
-	uint32_t	nr_memsize;	/* size of the shared region */
-	uint32_t	nr_tx_slots;	/* slots in tx rings */
-	uint32_t	nr_rx_slots;	/* slots in rx rings */
-	uint16_t	nr_tx_rings;	/* number of tx rings */
-	uint16_t	nr_rx_rings;	/* number of rx rings */
-
-	uint16_t	nr_ringid;	/* ring(s) we care about */
-#define NETMAP_HW_RING		0x4000	/* single NIC ring pair */
-#define NETMAP_SW_RING		0x2000	/* only host ring pair */
-
-#define NETMAP_RING_MASK	0x0fff	/* the ring number */
-
-#define NETMAP_NO_TX_POLL	0x1000	/* no automatic txsync on poll */
-
-#define NETMAP_DO_RX_POLL	0x8000	/* DO automatic rxsync on poll */
-
-	uint16_t	nr_cmd;
-#define NETMAP_BDG_ATTACH	1	/* attach the NIC */
-#define NETMAP_BDG_DETACH	2	/* detach the NIC */
-#define NETMAP_BDG_REGOPS	3	/* register bridge callbacks */
-#define NETMAP_BDG_LIST		4	/* get bridge's info */
-#define NETMAP_BDG_VNET_HDR     5       /* set the port virtio-net-hdr length */
-#define NETMAP_BDG_OFFSET	NETMAP_BDG_VNET_HDR	/* deprecated alias */
-#define NETMAP_BDG_NEWIF	6	/* create a virtual port */
-#define NETMAP_BDG_DELIF	7	/* destroy a virtual port */
-#define NETMAP_PT_HOST_CREATE	8	/* create ptnetmap kthreads */
-#define NETMAP_PT_HOST_DELETE	9	/* delete ptnetmap kthreads */
-#define NETMAP_BDG_POLLING_ON	10	/* delete polling kthread */
-#define NETMAP_BDG_POLLING_OFF	11	/* delete polling kthread */
-#define NETMAP_VNET_HDR_GET	12      /* get the port virtio-net-hdr length */
-	uint16_t	nr_arg1;	/* reserve extra rings in NIOCREGIF */
-#define NETMAP_BDG_HOST		1	/* attach the host stack on ATTACH */
-
-	uint16_t	nr_arg2;
-	uint32_t	nr_arg3;	/* req. extra buffers in NIOCREGIF */
-	uint32_t	nr_flags;
-	/* various modes, extends nr_ringid */
-	uint32_t	spare2[1];
-};
-
-#define NR_REG_MASK		0xf /* values for nr_flags */
-enum {	NR_REG_DEFAULT	= 0,	/* backward compat, should not be used. */
-	NR_REG_ALL_NIC	= 1,
-	NR_REG_SW	= 2,
-	NR_REG_NIC_SW	= 3,
-	NR_REG_ONE_NIC	= 4,
-	NR_REG_PIPE_MASTER = 5,
-	NR_REG_PIPE_SLAVE = 6,
-};
-/* monitor uses the NR_REG to select the rings to monitor */
-#define NR_MONITOR_TX	0x100
-#define NR_MONITOR_RX	0x200
-#define NR_ZCOPY_MON	0x400
-/* request exclusive access to the selected rings */
-#define NR_EXCLUSIVE	0x800
-/* request ptnetmap host support */
-#define NR_PASSTHROUGH_HOST	NR_PTNETMAP_HOST /* deprecated */
-#define NR_PTNETMAP_HOST	0x1000
-#define NR_RX_RINGS_ONLY	0x2000
-#define NR_TX_RINGS_ONLY	0x4000
-/* Applications set this flag if they are able to deal with virtio-net headers,
- * that is send/receive frames that start with a virtio-net header.
- * If not set, NIOCREGIF will fail with netmap ports that require applications
- * to use those headers. If the flag is set, the application can use the
- * NETMAP_VNET_HDR_GET command to figure out the header length. */
-#define NR_ACCEPT_VNET_HDR	0x8000
-
-
-/*
- * Windows does not have _IOWR(). _IO(), _IOW() and _IOR() are defined
- * in ws2def.h but not sure if they are in the form we need.
- * XXX so we redefine them
- * in a convenient way to use for DeviceIoControl signatures
- */
-#ifdef _WIN32
-#undef _IO	// ws2def.h
-#define _WIN_NM_IOCTL_TYPE 40000
-#define _IO(_c, _n)	CTL_CODE(_WIN_NM_IOCTL_TYPE, ((_n) + 0x800) , \
-		METHOD_BUFFERED, FILE_ANY_ACCESS  )
-#define _IO_direct(_c, _n)	CTL_CODE(_WIN_NM_IOCTL_TYPE, ((_n) + 0x800) , \
-		METHOD_OUT_DIRECT, FILE_ANY_ACCESS  )
-
-#define _IOWR(_c, _n, _s)	_IO(_c, _n)
-
-/* We havesome internal sysctl in addition to the externally visible ones */
-#define NETMAP_MMAP _IO_direct('i', 160)	// note METHOD_OUT_DIRECT
-#define NETMAP_POLL _IO('i', 162)
-
-/* and also two setsockopt for sysctl emulation */
-#define NETMAP_SETSOCKOPT _IO('i', 140)
-#define NETMAP_GETSOCKOPT _IO('i', 141)
-
-
-//These linknames are for the Netmap Core Driver
-#define NETMAP_NT_DEVICE_NAME			L"\\Device\\NETMAP"
-#define NETMAP_DOS_DEVICE_NAME			L"\\DosDevices\\netmap"
-
-//Definition of a structure used to pass a virtual address within an IOCTL
-typedef struct _MEMORY_ENTRY {
-	PVOID       pUsermodeVirtualAddress;
-} MEMORY_ENTRY, *PMEMORY_ENTRY;
-
-typedef struct _POLL_REQUEST_DATA {
-	int events;
-	int timeout;
-	int revents;
-} POLL_REQUEST_DATA;
-
-#endif /* _WIN32 */
-
-/*
- * FreeBSD uses the size value embedded in the _IOWR to determine
- * how much to copy in/out. So we need it to match the actual
- * data structure we pass. We put some spares in the structure
- * to ease compatibility with other versions
- */
-#define NIOCGINFO	_IOWR('i', 145, struct nmreq) /* return IF info */
-#define NIOCREGIF	_IOWR('i', 146, struct nmreq) /* interface register */
-#define NIOCTXSYNC	_IO('i', 148) /* sync tx queues */
-#define NIOCRXSYNC	_IO('i', 149) /* sync rx queues */
-#define NIOCCONFIG	_IOWR('i',150, struct nm_ifreq) /* for ext. modules */
-#endif /* !NIOCREGIF */
-
-
-/*
- * Helper functions for kernel and userspace
- */
-
-/*
- * check if space is available in the ring.
- */
-static inline int
-nm_ring_empty(struct netmap_ring *ring)
-{
-	return (ring->cur == ring->tail);
-}
-
-/*
- * Opaque structure that is passed to an external kernel
- * module via ioctl(fd, NIOCCONFIG, req) for a user-owned
- * bridge port (at this point ephemeral VALE interface).
- */
-#define NM_IFRDATA_LEN 256
-struct nm_ifreq {
-	char nifr_name[IFNAMSIZ];
-	char data[NM_IFRDATA_LEN];
-};
-
-/*
- * netmap kernel thread configuration
- */
-/* bhyve/vmm.ko MSIX parameters for IOCTL */
-struct ptn_vmm_ioctl_msix {
-	uint64_t        msg;
-	uint64_t        addr;
-};
-
-/* IOCTL parameters */
-struct nm_kth_ioctl {
-	u_long				com;
-	/* TODO: use union */
-	union {
-		struct ptn_vmm_ioctl_msix msix;
-	} data;
-};
-
-/* Configuration of a ptnetmap ring */
-struct ptnet_ring_cfg {
-	uint64_t ioeventfd;		/* eventfd in linux, tsleep() parameter in FreeBSD */
-	uint64_t irqfd;			/* eventfd in linux, ioctl fd in FreeBSD */
-	struct nm_kth_ioctl ioctl;	/* ioctl parameter to send irq (only used in bhyve/FreeBSD) */
-};
-#endif /* _NET_NETMAP_H_ */