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kernel/linux-rt-4.4.41/include/linux/vmw_vmci_api.h 3.19 KB
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  /*
   * VMware VMCI Driver
   *
   * Copyright (C) 2012 VMware, Inc. All rights reserved.
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License as published by the
   * Free Software Foundation version 2 and no later version.
   *
   * This program is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * for more details.
   */
  
  #ifndef __VMW_VMCI_API_H__
  #define __VMW_VMCI_API_H__
  
  #include <linux/uidgid.h>
  #include <linux/vmw_vmci_defs.h>
  
  #undef  VMCI_KERNEL_API_VERSION
  #define VMCI_KERNEL_API_VERSION_1 1
  #define VMCI_KERNEL_API_VERSION_2 2
  #define VMCI_KERNEL_API_VERSION   VMCI_KERNEL_API_VERSION_2
  
  struct msghdr;
  typedef void (vmci_device_shutdown_fn) (void *device_registration,
  					void *user_data);
  
  int vmci_datagram_create_handle(u32 resource_id, u32 flags,
  				vmci_datagram_recv_cb recv_cb,
  				void *client_data,
  				struct vmci_handle *out_handle);
  int vmci_datagram_create_handle_priv(u32 resource_id, u32 flags, u32 priv_flags,
  				     vmci_datagram_recv_cb recv_cb,
  				     void *client_data,
  				     struct vmci_handle *out_handle);
  int vmci_datagram_destroy_handle(struct vmci_handle handle);
  int vmci_datagram_send(struct vmci_datagram *msg);
  int vmci_doorbell_create(struct vmci_handle *handle, u32 flags,
  			 u32 priv_flags,
  			 vmci_callback notify_cb, void *client_data);
  int vmci_doorbell_destroy(struct vmci_handle handle);
  int vmci_doorbell_notify(struct vmci_handle handle, u32 priv_flags);
  u32 vmci_get_context_id(void);
  bool vmci_is_context_owner(u32 context_id, kuid_t uid);
  
  int vmci_event_subscribe(u32 event,
  			 vmci_event_cb callback, void *callback_data,
  			 u32 *subid);
  int vmci_event_unsubscribe(u32 subid);
  u32 vmci_context_get_priv_flags(u32 context_id);
  int vmci_qpair_alloc(struct vmci_qp **qpair,
  		     struct vmci_handle *handle,
  		     u64 produce_qsize,
  		     u64 consume_qsize,
  		     u32 peer, u32 flags, u32 priv_flags);
  int vmci_qpair_detach(struct vmci_qp **qpair);
  int vmci_qpair_get_produce_indexes(const struct vmci_qp *qpair,
  				   u64 *producer_tail,
  				   u64 *consumer_head);
  int vmci_qpair_get_consume_indexes(const struct vmci_qp *qpair,
  				   u64 *consumer_tail,
  				   u64 *producer_head);
  s64 vmci_qpair_produce_free_space(const struct vmci_qp *qpair);
  s64 vmci_qpair_produce_buf_ready(const struct vmci_qp *qpair);
  s64 vmci_qpair_consume_free_space(const struct vmci_qp *qpair);
  s64 vmci_qpair_consume_buf_ready(const struct vmci_qp *qpair);
  ssize_t vmci_qpair_enqueue(struct vmci_qp *qpair,
  			   const void *buf, size_t buf_size, int mode);
  ssize_t vmci_qpair_dequeue(struct vmci_qp *qpair,
  			   void *buf, size_t buf_size, int mode);
  ssize_t vmci_qpair_peek(struct vmci_qp *qpair, void *buf, size_t buf_size,
  			int mode);
  ssize_t vmci_qpair_enquev(struct vmci_qp *qpair,
  			  struct msghdr *msg, size_t iov_size, int mode);
  ssize_t vmci_qpair_dequev(struct vmci_qp *qpair,
  			  struct msghdr *msg, size_t iov_size, int mode);
  ssize_t vmci_qpair_peekv(struct vmci_qp *qpair, struct msghdr *msg, size_t iov_size,
  			 int mode);
  
  #endif /* !__VMW_VMCI_API_H__ */