projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| a110b7eb GZ |
1 | /* |
| 2 | * VMware VMCI Driver | |
| 3 | * | |
| 4 | * Copyright (C) 2012 VMware, Inc. All rights reserved. | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify it | |
| 7 | * under the terms of the GNU General Public License as published by the | |
| 8 | * Free Software Foundation version 2 and no later version. | |
| 9 | * | |
| 10 | * This program is distributed in the hope that it will be useful, but | |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
| 12 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 13 | * for more details. | |
| 14 | */ | |
| 15 | ||
| 16 | #ifndef _VMCI_DATAGRAM_H_ | |
| 17 | #define _VMCI_DATAGRAM_H_ | |
| 18 | ||
| 19 | #include <linux/types.h> | |
| 20 | #include <linux/list.h> | |
| 21 | ||
| 22 | #include "vmci_context.h" | |
| 23 | ||
| 24 | #define VMCI_MAX_DELAYED_DG_HOST_QUEUE_SIZE 256 | |
| 25 | ||
| 26 | /* | |
| 27 | * The struct vmci_datagram_queue_entry is a queue header for the in-kernel VMCI | |
| 28 | * datagram queues. It is allocated in non-paged memory, as the | |
| 29 | * content is accessed while holding a spinlock. The pending datagram | |
| 30 | * itself may be allocated from paged memory. We shadow the size of | |
| 31 | * the datagram in the non-paged queue entry as this size is used | |
| 32 | * while holding the same spinlock as above. | |
| 33 | */ | |
| 34 | struct vmci_datagram_queue_entry { | |
| 35 | struct list_head list_item; /* For queuing. */ | |
| 36 | size_t dg_size; /* Size of datagram. */ | |
| 37 | struct vmci_datagram *dg; /* Pending datagram. */ | |
| 38 | }; | |
| 39 | ||
| 40 | /* VMCIDatagramSendRecvInfo */ | |
| 41 | struct vmci_datagram_snd_rcv_info { | |
| 42 | u64 addr; | |
| 43 | u32 len; | |
| 44 | s32 result; | |
| 45 | }; | |
| 46 | ||
| 47 | /* Datagram API for non-public use. */ | |
| 48 | int vmci_datagram_dispatch(u32 context_id, struct vmci_datagram *dg, | |
| 49 | bool from_guest); | |
| 50 | int vmci_datagram_invoke_guest_handler(struct vmci_datagram *dg); | |
| 51 | ||
| 52 | #endif /* _VMCI_DATAGRAM_H_ */ |