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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * VMware vSockets Driver
4 *
5 * Copyright (C) 2009-2013 VMware, Inc. All rights reserved.
6 */
7
8#ifndef __VMCI_TRANSPORT_NOTIFY_H__
9#define __VMCI_TRANSPORT_NOTIFY_H__
10
11#include <linux/types.h>
12#include <linux/vmw_vmci_defs.h>
13#include <linux/vmw_vmci_api.h>
14#include <linux/vm_sockets.h>
15
16#include "vmci_transport.h"
17
18/* Comment this out to compare with old protocol. */
19#define VSOCK_OPTIMIZATION_WAITING_NOTIFY 1
20#if defined(VSOCK_OPTIMIZATION_WAITING_NOTIFY)
21/* Comment this out to remove flow control for "new" protocol */
22#define VSOCK_OPTIMIZATION_FLOW_CONTROL 1
23#endif
24
25#define VMCI_TRANSPORT_MAX_DGRAM_RESENDS 10
26
27struct vmci_transport_recv_notify_data {
28 u64 consume_head;
29 u64 produce_tail;
30 bool notify_on_block;
31};
32
33struct vmci_transport_send_notify_data {
34 u64 consume_head;
35 u64 produce_tail;
36};
37
38/* Socket notification callbacks. */
39struct vmci_transport_notify_ops {
40 void (*socket_init) (struct sock *sk);
41 void (*socket_destruct) (struct vsock_sock *vsk);
42 int (*poll_in) (struct sock *sk, size_t target,
43 bool *data_ready_now);
44 int (*poll_out) (struct sock *sk, size_t target,
45 bool *space_avail_now);
46 void (*handle_notify_pkt) (struct sock *sk,
47 struct vmci_transport_packet *pkt,
48 bool bottom_half, struct sockaddr_vm *dst,
49 struct sockaddr_vm *src,
50 bool *pkt_processed);
51 int (*recv_init) (struct sock *sk, size_t target,
52 struct vmci_transport_recv_notify_data *data);
53 int (*recv_pre_block) (struct sock *sk, size_t target,
54 struct vmci_transport_recv_notify_data *data);
55 int (*recv_pre_dequeue) (struct sock *sk, size_t target,
56 struct vmci_transport_recv_notify_data *data);
57 int (*recv_post_dequeue) (struct sock *sk, size_t target,
58 ssize_t copied, bool data_read,
59 struct vmci_transport_recv_notify_data *data);
60 int (*send_init) (struct sock *sk,
61 struct vmci_transport_send_notify_data *data);
62 int (*send_pre_block) (struct sock *sk,
63 struct vmci_transport_send_notify_data *data);
64 int (*send_pre_enqueue) (struct sock *sk,
65 struct vmci_transport_send_notify_data *data);
66 int (*send_post_enqueue) (struct sock *sk, ssize_t written,
67 struct vmci_transport_send_notify_data *data);
68 void (*process_request) (struct sock *sk);
69 void (*process_negotiate) (struct sock *sk);
70};
71
72extern const struct vmci_transport_notify_ops vmci_transport_notify_pkt_ops;
73extern const
74struct vmci_transport_notify_ops vmci_transport_notify_pkt_q_state_ops;
75
76#endif /* __VMCI_TRANSPORT_NOTIFY_H__ */