a6d768d845
This feature enables applications to ask netmap to transmit or receive packets starting at a user-specified offset from the beginning of the netmap buffer. This is meant to ease those packet manipulation operations such as pushing or popping packet headers, that may be useful to implement software switches, routers and other packet processors. To use the feature, drivers (e.g., iflib, vtnet, etc.) must have explicit support. This change does not add support for any driver, but introduces the necessary kernel changes. However, offsets support is already included for VALE ports and pipes.
101 lines
3.9 KiB
C
101 lines
3.9 KiB
C
/*
|
|
* Copyright (C) 2013-2016 Luigi Rizzo
|
|
* Copyright (C) 2013-2016 Giuseppe Lettieri
|
|
* Copyright (C) 2013-2018 Vincenzo Maffione
|
|
* Copyright (C) 2015 Stefano Garzarella
|
|
* 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 ``AS 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef NETMAP_VIRT_H
|
|
#define NETMAP_VIRT_H
|
|
|
|
/*
|
|
* Register offsets and other macros for the ptnetmap paravirtual devices:
|
|
* ptnetmap-memdev: device used to expose memory into the guest
|
|
* ptnet: paravirtualized NIC exposing a netmap port in the guest
|
|
*
|
|
* These macros are used in the hypervisor frontend (QEMU, bhyve) and in the
|
|
* guest device driver.
|
|
*/
|
|
|
|
/* PCI identifiers and PCI BARs for ptnetmap-memdev and ptnet. */
|
|
#define PTNETMAP_MEMDEV_NAME "ptnetmap-memdev"
|
|
#define PTNETMAP_PCI_VENDOR_ID 0x1b36 /* QEMU virtual devices */
|
|
#define PTNETMAP_PCI_DEVICE_ID 0x000c /* memory device */
|
|
#define PTNETMAP_PCI_NETIF_ID 0x000d /* ptnet network interface */
|
|
#define PTNETMAP_IO_PCI_BAR 0
|
|
#define PTNETMAP_MEM_PCI_BAR 1
|
|
#define PTNETMAP_MSIX_PCI_BAR 2
|
|
|
|
/* Device registers for ptnetmap-memdev */
|
|
#define PTNET_MDEV_IO_MEMSIZE_LO 0 /* netmap memory size (low) */
|
|
#define PTNET_MDEV_IO_MEMSIZE_HI 4 /* netmap_memory_size (high) */
|
|
#define PTNET_MDEV_IO_MEMID 8 /* memory allocator ID in the host */
|
|
#define PTNET_MDEV_IO_IF_POOL_OFS 64
|
|
#define PTNET_MDEV_IO_IF_POOL_OBJNUM 68
|
|
#define PTNET_MDEV_IO_IF_POOL_OBJSZ 72
|
|
#define PTNET_MDEV_IO_RING_POOL_OFS 76
|
|
#define PTNET_MDEV_IO_RING_POOL_OBJNUM 80
|
|
#define PTNET_MDEV_IO_RING_POOL_OBJSZ 84
|
|
#define PTNET_MDEV_IO_BUF_POOL_OFS 88
|
|
#define PTNET_MDEV_IO_BUF_POOL_OBJNUM 92
|
|
#define PTNET_MDEV_IO_BUF_POOL_OBJSZ 96
|
|
#define PTNET_MDEV_IO_END 100
|
|
|
|
/* ptnetmap features */
|
|
#define PTNETMAP_F_VNET_HDR 1
|
|
|
|
/* Device registers for the ptnet network device. */
|
|
#define PTNET_IO_PTFEAT 0
|
|
#define PTNET_IO_PTCTL 4
|
|
#define PTNET_IO_MAC_LO 8
|
|
#define PTNET_IO_MAC_HI 12
|
|
#define PTNET_IO_CSBBAH 16 /* deprecated */
|
|
#define PTNET_IO_CSBBAL 20 /* deprecated */
|
|
#define PTNET_IO_NIFP_OFS 24
|
|
#define PTNET_IO_NUM_TX_RINGS 28
|
|
#define PTNET_IO_NUM_RX_RINGS 32
|
|
#define PTNET_IO_NUM_TX_SLOTS 36
|
|
#define PTNET_IO_NUM_RX_SLOTS 40
|
|
#define PTNET_IO_VNET_HDR_LEN 44
|
|
#define PTNET_IO_HOSTMEMID 48
|
|
#define PTNET_IO_CSB_GH_BAH 52
|
|
#define PTNET_IO_CSB_GH_BAL 56
|
|
#define PTNET_IO_CSB_HG_BAH 60
|
|
#define PTNET_IO_CSB_HG_BAL 64
|
|
#define PTNET_IO_END 68
|
|
#define PTNET_IO_KICK_BASE 128
|
|
#define PTNET_IO_MASK 0xff
|
|
|
|
/* ptnet control commands (values for PTCTL register):
|
|
* - CREATE starts the host sync-kloop
|
|
* - DELETE stops the host sync-kloop
|
|
*/
|
|
#define PTNETMAP_PTCTL_CREATE 1
|
|
#define PTNETMAP_PTCTL_DELETE 2
|
|
|
|
#endif /* NETMAP_VIRT_H */
|