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