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/*
* Copyright (c) 2019 Nutanix Inc. All rights reserved.
*
* Authors: Thanos Makatos <thanos@nutanix.com>
* Swapnil Ingle <swapnil.ingle@nutanix.com>
* Felipe Franciosi <felipe@nutanix.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Nutanix nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 <COPYRIGHT HOLDER> 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.
*
*/
#ifndef LIB_VFIO_USER_TRAN_H
#define LIB_VFIO_USER_TRAN_H
#include "libvfio-user.h"
#include "private.h"
struct transport_ops {
int (*init)(vfu_ctx_t *vfu_ctx);
int (*get_poll_fd)(vfu_ctx_t *vfu_ctx);
int (*attach)(vfu_ctx_t *vfu_ctx);
int (*get_request_header)(vfu_ctx_t *vfu_ctx, struct vfio_user_header *hdr,
int *fds, size_t *nr_fds);
int (*recv_body)(vfu_ctx_t *vfu_ctx, vfu_msg_t *msg);
int (*reply)(vfu_ctx_t *vfu_ctx, vfu_msg_t *msg, int err);
int (*recv_msg)(vfu_ctx_t *vfu_ctx, vfu_msg_t *msg);
int (*send_msg)(vfu_ctx_t *vfu_ctx, uint16_t msg_id,
enum vfio_user_command cmd,
void *send_data, size_t send_len,
struct vfio_user_header *hdr,
void *recv_data, size_t recv_len);
void (*detach)(vfu_ctx_t *vfu_ctx);
void (*fini)(vfu_ctx_t *vfu_ctx);
};
/* The largest number of fd's we are prepared to receive. */
// FIXME: value?
#define VFIO_USER_CLIENT_MAX_MSG_FDS_LIMIT (1024)
/*
* Parse JSON supplied from the other side into the known parameters. Note: they
* will not be set if not found in the JSON.
*/
int
tran_parse_version_json(const char *json_str, int *client_max_fdsp,
size_t *client_max_data_xfer_sizep, size_t *pgsizep);
int
tran_negotiate(vfu_ctx_t *vfu_ctx);
#endif /* LIB_VFIO_USER_TRAN_H */
/* ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: */
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