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/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* 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 Intel Corporation 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 THE COPYRIGHT
* OWNER 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.
*/
#ifndef _VHOST_NET_CDEV_H_
#define _VHOST_NET_CDEV_H_
#include <stdint.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <linux/vhost.h>
#include <rte_log.h>
/* Macros for printing using RTE_LOG */
#define RTE_LOGTYPE_VHOST_CONFIG RTE_LOGTYPE_USER1
#define RTE_LOGTYPE_VHOST_DATA RTE_LOGTYPE_USER1
#ifdef RTE_LIBRTE_VHOST_DEBUG
#define VHOST_MAX_PRINT_BUFF 6072
#define LOG_LEVEL RTE_LOG_DEBUG
#define LOG_DEBUG(log_type, fmt, args...) RTE_LOG(DEBUG, log_type, fmt, ##args)
#define PRINT_PACKET(device, addr, size, header) do { \
char *pkt_addr = (char *)(addr); \
unsigned int index; \
char packet[VHOST_MAX_PRINT_BUFF]; \
\
if ((header)) \
snprintf(packet, VHOST_MAX_PRINT_BUFF, "(%"PRIu64") Header size %d: ", (device->device_fh), (size)); \
else \
snprintf(packet, VHOST_MAX_PRINT_BUFF, "(%"PRIu64") Packet size %d: ", (device->device_fh), (size)); \
for (index = 0; index < (size); index++) { \
snprintf(packet + strnlen(packet, VHOST_MAX_PRINT_BUFF), VHOST_MAX_PRINT_BUFF - strnlen(packet, VHOST_MAX_PRINT_BUFF), \
"%02hhx ", pkt_addr[index]); \
} \
snprintf(packet + strnlen(packet, VHOST_MAX_PRINT_BUFF), VHOST_MAX_PRINT_BUFF - strnlen(packet, VHOST_MAX_PRINT_BUFF), "\n"); \
\
LOG_DEBUG(VHOST_DATA, "%s", packet); \
} while (0)
#else
#define LOG_LEVEL RTE_LOG_INFO
#define LOG_DEBUG(log_type, fmt, args...) do {} while (0)
#define PRINT_PACKET(device, addr, size, header) do {} while (0)
#endif
/*
* Structure used to identify device context.
*/
struct vhost_device_ctx {
pid_t pid; /* PID of process calling the IOCTL. */
uint64_t fh; /* Populated with fi->fh to track the device index. */
};
/*
* Structure contains function pointers to be defined in virtio-net.c. These
* functions are called in CUSE context and are used to configure devices.
*/
struct vhost_net_device_ops {
int (*new_device)(struct vhost_device_ctx);
void (*destroy_device)(struct vhost_device_ctx);
int (*get_features)(struct vhost_device_ctx, uint64_t *);
int (*set_features)(struct vhost_device_ctx, uint64_t *);
int (*set_mem_table)(struct vhost_device_ctx, const void *, uint32_t);
int (*set_vring_num)(struct vhost_device_ctx, struct vhost_vring_state *);
int (*set_vring_addr)(struct vhost_device_ctx, struct vhost_vring_addr *);
int (*set_vring_base)(struct vhost_device_ctx, struct vhost_vring_state *);
int (*get_vring_base)(struct vhost_device_ctx, uint32_t, struct vhost_vring_state *);
int (*set_vring_kick)(struct vhost_device_ctx, struct vhost_vring_file *);
int (*set_vring_call)(struct vhost_device_ctx, struct vhost_vring_file *);
int (*set_backend)(struct vhost_device_ctx, struct vhost_vring_file *);
int (*set_owner)(struct vhost_device_ctx);
int (*reset_owner)(struct vhost_device_ctx);
};
struct vhost_net_device_ops const *get_virtio_net_callbacks(void);
#endif /* _VHOST_NET_CDEV_H_ */
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