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Diffstat (limited to 'src/vnet/devices/netmap/net_netmap.h')
| -rw-r--r-- | src/vnet/devices/netmap/net_netmap.h | 650 |
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_ */ |