1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * VMware VMCI Driver
4  *
5  * Copyright (C) 2012 VMware, Inc. All rights reserved.
6  */
7 
8 #ifndef __VMW_VMCI_API_H__
9 #define __VMW_VMCI_API_H__
10 
11 #include <linux/uidgid.h>
12 #include <linux/vmw_vmci_defs.h>
13 
14 #undef  VMCI_KERNEL_API_VERSION
15 #define VMCI_KERNEL_API_VERSION_1 1
16 #define VMCI_KERNEL_API_VERSION_2 2
17 #define VMCI_KERNEL_API_VERSION   VMCI_KERNEL_API_VERSION_2
18 
19 struct msghdr;
20 typedef void (vmci_device_shutdown_fn) (void *device_registration,
21 					void *user_data);
22 typedef void (*vmci_vsock_cb) (bool is_host);
23 
24 int vmci_datagram_create_handle(u32 resource_id, u32 flags,
25 				vmci_datagram_recv_cb recv_cb,
26 				void *client_data,
27 				struct vmci_handle *out_handle);
28 int vmci_datagram_create_handle_priv(u32 resource_id, u32 flags, u32 priv_flags,
29 				     vmci_datagram_recv_cb recv_cb,
30 				     void *client_data,
31 				     struct vmci_handle *out_handle);
32 int vmci_datagram_destroy_handle(struct vmci_handle handle);
33 int vmci_datagram_send(struct vmci_datagram *msg);
34 int vmci_doorbell_create(struct vmci_handle *handle, u32 flags,
35 			 u32 priv_flags,
36 			 vmci_callback notify_cb, void *client_data);
37 int vmci_doorbell_destroy(struct vmci_handle handle);
38 int vmci_doorbell_notify(struct vmci_handle handle, u32 priv_flags);
39 u32 vmci_get_context_id(void);
40 bool vmci_is_context_owner(u32 context_id, kuid_t uid);
41 int vmci_register_vsock_callback(vmci_vsock_cb callback);
42 
43 int vmci_event_subscribe(u32 event,
44 			 vmci_event_cb callback, void *callback_data,
45 			 u32 *subid);
46 int vmci_event_unsubscribe(u32 subid);
47 u32 vmci_context_get_priv_flags(u32 context_id);
48 int vmci_qpair_alloc(struct vmci_qp **qpair,
49 		     struct vmci_handle *handle,
50 		     u64 produce_qsize,
51 		     u64 consume_qsize,
52 		     u32 peer, u32 flags, u32 priv_flags);
53 int vmci_qpair_detach(struct vmci_qp **qpair);
54 int vmci_qpair_get_produce_indexes(const struct vmci_qp *qpair,
55 				   u64 *producer_tail,
56 				   u64 *consumer_head);
57 int vmci_qpair_get_consume_indexes(const struct vmci_qp *qpair,
58 				   u64 *consumer_tail,
59 				   u64 *producer_head);
60 s64 vmci_qpair_produce_free_space(const struct vmci_qp *qpair);
61 s64 vmci_qpair_produce_buf_ready(const struct vmci_qp *qpair);
62 s64 vmci_qpair_consume_free_space(const struct vmci_qp *qpair);
63 s64 vmci_qpair_consume_buf_ready(const struct vmci_qp *qpair);
64 ssize_t vmci_qpair_enqueue(struct vmci_qp *qpair,
65 			   const void *buf, size_t buf_size, int mode);
66 ssize_t vmci_qpair_dequeue(struct vmci_qp *qpair,
67 			   void *buf, size_t buf_size, int mode);
68 ssize_t vmci_qpair_peek(struct vmci_qp *qpair, void *buf, size_t buf_size,
69 			int mode);
70 ssize_t vmci_qpair_enquev(struct vmci_qp *qpair,
71 			  struct msghdr *msg, size_t iov_size, int mode);
72 ssize_t vmci_qpair_dequev(struct vmci_qp *qpair,
73 			  struct msghdr *msg, size_t iov_size, int mode);
74 ssize_t vmci_qpair_peekv(struct vmci_qp *qpair, struct msghdr *msg, size_t iov_size,
75 			 int mode);
76 
77 #endif /* !__VMW_VMCI_API_H__ */
78