mirror of
https://passt.top/passt
synced 2025-01-22 04:05:22 +00:00
898e853635
We don't modify the structure in some virtio functions. Signed-off-by: Laurent Vivier <lvivier@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
|
|
* Copyright Red Hat
|
|
* Author: Laurent Vivier <lvivier@redhat.com>
|
|
*
|
|
* vhost-user common UDP and TCP functions
|
|
*/
|
|
|
|
#ifndef VU_COMMON_H
|
|
#define VU_COMMON_H
|
|
#include <linux/virtio_net.h>
|
|
|
|
static inline void *vu_eth(void *base)
|
|
{
|
|
return ((char *)base + sizeof(struct virtio_net_hdr_mrg_rxbuf));
|
|
}
|
|
|
|
static inline void *vu_ip(void *base)
|
|
{
|
|
return (struct ethhdr *)vu_eth(base) + 1;
|
|
}
|
|
|
|
static inline void *vu_payloadv4(void *base)
|
|
{
|
|
return (struct iphdr *)vu_ip(base) + 1;
|
|
}
|
|
|
|
static inline void *vu_payloadv6(void *base)
|
|
{
|
|
return (struct ipv6hdr *)vu_ip(base) + 1;
|
|
}
|
|
|
|
/**
|
|
* vu_set_element() - Initialize a vu_virtq_element
|
|
* @elem: Element to initialize
|
|
* @out_sg: One out iovec entry to set in elem
|
|
* @in_sg: One in iovec entry to set in elem
|
|
*/
|
|
static inline void vu_set_element(struct vu_virtq_element *elem,
|
|
struct iovec *out_sg, struct iovec *in_sg)
|
|
{
|
|
elem->out_num = !!out_sg;
|
|
elem->out_sg = out_sg;
|
|
elem->in_num = !!in_sg;
|
|
elem->in_sg = in_sg;
|
|
}
|
|
|
|
void vu_init_elem(struct vu_virtq_element *elem, struct iovec *iov,
|
|
int elem_cnt);
|
|
int vu_collect(const struct vu_dev *vdev, struct vu_virtq *vq,
|
|
struct vu_virtq_element *elem, int max_elem, size_t size,
|
|
size_t *frame_size);
|
|
void vu_set_vnethdr(const struct vu_dev *vdev,
|
|
struct virtio_net_hdr_mrg_rxbuf *vnethdr,
|
|
int num_buffers);
|
|
void vu_flush(const struct vu_dev *vdev, struct vu_virtq *vq,
|
|
struct vu_virtq_element *elem, int elem_cnt);
|
|
void vu_kick_cb(struct vu_dev *vdev, union epoll_ref ref,
|
|
const struct timespec *now);
|
|
int vu_send_single(const struct ctx *c, const void *buf, size_t size);
|
|
#endif /* VU_COMMON_H */
|