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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* VMware vSockets Driver
*
* Copyright (C) 2009-2013 VMware, Inc. All rights reserved.
*/
#ifndef __VMCI_TRANSPORT_NOTIFY_H__
#define __VMCI_TRANSPORT_NOTIFY_H__
#include <linux/types.h>
#include <linux/vmw_vmci_defs.h>
#include <linux/vmw_vmci_api.h>
#include <linux/vm_sockets.h>
#include "vmci_transport.h"
/* Comment this out to compare with old protocol. */
#define VSOCK_OPTIMIZATION_WAITING_NOTIFY 1
#if defined(VSOCK_OPTIMIZATION_WAITING_NOTIFY)
/* Comment this out to remove flow control for "new" protocol */
#define VSOCK_OPTIMIZATION_FLOW_CONTROL 1
#endif
#define VMCI_TRANSPORT_MAX_DGRAM_RESENDS 10
struct vmci_transport_recv_notify_data {
u64 consume_head;
u64 produce_tail;
bool notify_on_block;
};
struct vmci_transport_send_notify_data {
u64 consume_head;
u64 produce_tail;
};
/* Socket notification callbacks. */
struct vmci_transport_notify_ops {
void (*socket_init) (struct sock *sk);
void (*socket_destruct) (struct vsock_sock *vsk);
int (*poll_in) (struct sock *sk, size_t target,
bool *data_ready_now);
int (*poll_out) (struct sock *sk, size_t target,
bool *space_avail_now);
void (*handle_notify_pkt) (struct sock *sk,
struct vmci_transport_packet *pkt,
bool bottom_half, struct sockaddr_vm *dst,
struct sockaddr_vm *src,
bool *pkt_processed);
int (*recv_init) (struct sock *sk, size_t target,
struct vmci_transport_recv_notify_data *data);
int (*recv_pre_block) (struct sock *sk, size_t target,
struct vmci_transport_recv_notify_data *data);
int (*recv_pre_dequeue) (struct sock *sk, size_t target,
struct vmci_transport_recv_notify_data *data);
int (*recv_post_dequeue) (struct sock *sk, size_t target,
ssize_t copied, bool data_read,
struct vmci_transport_recv_notify_data *data);
int (*send_init) (struct sock *sk,
struct vmci_transport_send_notify_data *data);
int (*send_pre_block) (struct sock *sk,
struct vmci_transport_send_notify_data *data);
int (*send_pre_enqueue) (struct sock *sk,
struct vmci_transport_send_notify_data *data);
int (*send_post_enqueue) (struct sock *sk, ssize_t written,
struct vmci_transport_send_notify_data *data);
void (*process_request) (struct sock *sk);
void (*process_negotiate) (struct sock *sk);
};
extern const struct vmci_transport_notify_ops vmci_transport_notify_pkt_ops;
extern const
struct vmci_transport_notify_ops vmci_transport_notify_pkt_q_state_ops;
#endif /* __VMCI_TRANSPORT_NOTIFY_H__ */
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