1dbf53eebf
This patch adds a library, application and test scripts for extending SPDK to present virtio-scsi controllers to QEMU-based VMs and process I/O submitted to devices attached to those controllers. This functionality is dependent on QEMU patches to enable vhost-scsi in userspace - those patches are currently working their way through the QEMU mailing list, but temporary patches to enable this functionality in QEMU will be made available shortly through the SPDK github repository. Signed-off-by: Jim Harris <james.r.harris@intel.com> Signed-off-by: Krzysztof Jakimiak <krzysztof.jakimiak@intel.com> Signed-off-by: Michal Kosciowski <michal.kosciowski@intel.com> Signed-off-by: Karol Latecki <karolx.latecki@intel.com> Signed-off-by: Piotr Pelplinski <piotr.pelplinski@intel.com> Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com> Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com> Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com> Signed-off-by: Krzysztof Jakimiak <krzysztof.jakimiak@intel.com> Change-Id: I138e4021f0ac4b1cd9a6e4041783cdf06e6f0efb
129 lines
4.1 KiB
C
129 lines
4.1 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _VHOST_NET_USER_H
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#define _VHOST_NET_USER_H
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#include <stdint.h>
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#include <linux/vhost.h>
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#include "rte_virtio_net.h"
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/* refer to hw/virtio/vhost-user.c */
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#define VHOST_MEMORY_MAX_NREGIONS 8
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#define VHOST_USER_PROTOCOL_F_MQ 0
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#define VHOST_USER_PROTOCOL_F_LOG_SHMFD 1
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#define VHOST_USER_PROTOCOL_F_RARP 2
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#define VHOST_USER_PROTOCOL_FEATURES ((1ULL << VHOST_USER_PROTOCOL_F_MQ) | \
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(1ULL << VHOST_USER_PROTOCOL_F_LOG_SHMFD) |\
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(1ULL << VHOST_USER_PROTOCOL_F_RARP))
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typedef enum VhostUserRequest {
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VHOST_USER_NONE = 0,
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VHOST_USER_GET_FEATURES = 1,
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VHOST_USER_SET_FEATURES = 2,
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VHOST_USER_SET_OWNER = 3,
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VHOST_USER_RESET_OWNER = 4,
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VHOST_USER_SET_MEM_TABLE = 5,
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VHOST_USER_SET_LOG_BASE = 6,
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VHOST_USER_SET_LOG_FD = 7,
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VHOST_USER_SET_VRING_NUM = 8,
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VHOST_USER_SET_VRING_ADDR = 9,
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VHOST_USER_SET_VRING_BASE = 10,
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VHOST_USER_GET_VRING_BASE = 11,
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VHOST_USER_SET_VRING_KICK = 12,
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VHOST_USER_SET_VRING_CALL = 13,
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VHOST_USER_SET_VRING_ERR = 14,
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VHOST_USER_GET_PROTOCOL_FEATURES = 15,
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VHOST_USER_SET_PROTOCOL_FEATURES = 16,
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VHOST_USER_GET_QUEUE_NUM = 17,
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VHOST_USER_SET_VRING_ENABLE = 18,
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VHOST_USER_SEND_RARP = 19,
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VHOST_USER_MAX
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} VhostUserRequest;
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typedef struct VhostUserMemoryRegion {
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uint64_t guest_phys_addr;
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uint64_t memory_size;
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uint64_t userspace_addr;
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uint64_t mmap_offset;
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} VhostUserMemoryRegion;
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typedef struct VhostUserMemory {
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uint32_t nregions;
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uint32_t padding;
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VhostUserMemoryRegion regions[VHOST_MEMORY_MAX_NREGIONS];
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} VhostUserMemory;
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typedef struct VhostUserLog {
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uint64_t mmap_size;
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uint64_t mmap_offset;
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} VhostUserLog;
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typedef struct VhostUserMsg {
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VhostUserRequest request;
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#define VHOST_USER_VERSION_MASK 0x3
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#define VHOST_USER_REPLY_MASK (0x1 << 2)
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uint32_t flags;
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uint32_t size; /* the following payload size */
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union {
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#define VHOST_USER_VRING_IDX_MASK 0xff
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#define VHOST_USER_VRING_NOFD_MASK (0x1<<8)
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uint64_t u64;
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struct vhost_vring_state state;
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struct vhost_vring_addr addr;
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VhostUserMemory memory;
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VhostUserLog log;
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} payload;
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int fds[VHOST_MEMORY_MAX_NREGIONS];
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} __attribute((packed)) VhostUserMsg;
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#define VHOST_USER_HDR_SIZE offsetof(VhostUserMsg, payload.u64)
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/* The version of the protocol we support */
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#define VHOST_USER_VERSION 0x1
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/* vhost_user.c */
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int vhost_user_msg_handler(int vid, int fd);
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/* socket.c */
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int read_fd_message(int sockfd, char *buf, int buflen, int *fds, int fd_num);
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int send_fd_message(int sockfd, char *buf, int buflen, int *fds, int fd_num);
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#endif
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