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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 _VMCI_DATAGRAM_H_
- #define _VMCI_DATAGRAM_H_
- #include <linux/types.h>
- #include <linux/list.h>
- #include "vmci_context.h"
- #define VMCI_MAX_DELAYED_DG_HOST_QUEUE_SIZE 256
- /*
- * The struct vmci_datagram_queue_entry is a queue header for the in-kernel VMCI
- * datagram queues. It is allocated in non-paged memory, as the
- * content is accessed while holding a spinlock. The pending datagram
- * itself may be allocated from paged memory. We shadow the size of
- * the datagram in the non-paged queue entry as this size is used
- * while holding the same spinlock as above.
- */
- struct vmci_datagram_queue_entry {
- struct list_head list_item; /* For queuing. */
- size_t dg_size; /* Size of datagram. */
- struct vmci_datagram *dg; /* Pending datagram. */
- };
- /* VMCIDatagramSendRecvInfo */
- struct vmci_datagram_snd_rcv_info {
- u64 addr;
- u32 len;
- s32 result;
- };
- /* Datagram API for non-public use. */
- int vmci_datagram_dispatch(u32 context_id, struct vmci_datagram *dg,
- bool from_guest);
- int vmci_datagram_invoke_guest_handler(struct vmci_datagram *dg);
- #endif /* _VMCI_DATAGRAM_H_ */
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