LXR linux/net/vmw_vsock/vmci_transport

   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
  15#include "vmci_transport.h"
  16
  17/* Comment this out to compare with old protocol. */
  18#define VSOCK_OPTIMIZATION_WAITING_NOTIFY 1
  19#if defined(VSOCK_OPTIMIZATION_WAITING_NOTIFY)
  20/* Comment this out to remove flow control for "new" protocol */
  21#define VSOCK_OPTIMIZATION_FLOW_CONTROL 1
  22#endif
  23
  24#define VMCI_TRANSPORT_MAX_DGRAM_RESENDS       10
  25
  26struct vmci_transport_recv_notify_data {
  27        u64 consume_head;
  28        u64 produce_tail;
  29        bool notify_on_block;
  30};
  31
  32struct vmci_transport_send_notify_data {
  33        u64 consume_head;
  34        u64 produce_tail;
  35};
  36
  37/* Socket notification callbacks. */
  38struct vmci_transport_notify_ops {
  39        void (*socket_init) (struct sock *sk);
  40        void (*socket_destruct) (struct vsock_sock *vsk);
  41        int (*poll_in) (struct sock *sk, size_t target,
  42                          bool *data_ready_now);
  43        int (*poll_out) (struct sock *sk, size_t target,
  44                           bool *space_avail_now);
  45        void (*handle_notify_pkt) (struct sock *sk,
  46                                   struct vmci_transport_packet *pkt,
  47                                   bool bottom_half, struct sockaddr_vm *dst,
  48                                   struct sockaddr_vm *src,
  49                                   bool *pkt_processed);
  50        int (*recv_init) (struct sock *sk, size_t target,
  51                          struct vmci_transport_recv_notify_data *data);
  52        int (*recv_pre_block) (struct sock *sk, size_t target,
  53                               struct vmci_transport_recv_notify_data *data);
  54        int (*recv_pre_dequeue) (struct sock *sk, size_t target,
  55                                 struct vmci_transport_recv_notify_data *data);
  56        int (*recv_post_dequeue) (struct sock *sk, size_t target,
  57                                  ssize_t copied, bool data_read,
  58                                  struct vmci_transport_recv_notify_data *data);
  59        int (*send_init) (struct sock *sk,
  60                          struct vmci_transport_send_notify_data *data);
  61        int (*send_pre_block) (struct sock *sk,
  62                               struct vmci_transport_send_notify_data *data);
  63        int (*send_pre_enqueue) (struct sock *sk,
  64                                 struct vmci_transport_send_notify_data *data);
  65        int (*send_post_enqueue) (struct sock *sk, ssize_t written,
  66                                  struct vmci_transport_send_notify_data *data);
  67        void (*process_request) (struct sock *sk);
  68        void (*process_negotiate) (struct sock *sk);
  69};
  70
  71extern const struct vmci_transport_notify_ops vmci_transport_notify_pkt_ops;
  72extern const
  73struct vmci_transport_notify_ops vmci_transport_notify_pkt_q_state_ops;
  74
  75#endif /* __VMCI_TRANSPORT_NOTIFY_H__ */
  76