+++ /dev/null
-/*
- * 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_ */
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