1/*
2 * Copyright (c) 2020 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29#ifndef _VSOCK_TRANSPORT_H_
30#define _VSOCK_TRANSPORT_H_
31#ifdef KERNEL_PRIVATE
32
33#include <sys/cdefs.h>
34
35__BEGIN_DECLS
36
37#include <sys/queue.h>
38#include <sys/kernel_types.h>
39#include <sys/vsock.h>
40
41#define VSOCK_MAX_PACKET_SIZE 65536
42
43enum vsock_operation {
44 VSOCK_REQUEST = 0,
45 VSOCK_RESPONSE = 1,
46 VSOCK_PAYLOAD = 2,
47 VSOCK_SHUTDOWN = 3,
48 VSOCK_SHUTDOWN_RECEIVE = 4,
49 VSOCK_SHUTDOWN_SEND = 5,
50 VSOCK_RESET = 6,
51 VSOCK_CREDIT_UPDATE = 7,
52 VSOCK_CREDIT_REQUEST = 8,
53};
54
55struct vsock_address {
56 uint32_t cid;
57 uint32_t port;
58};
59
60struct vsock_transport {
61 void *provider;
62 int (*get_cid)(void *provider, uint32_t *cid);
63 int (*attach_socket)(void *provider);
64 int (*detach_socket)(void *provider);
65 int (*put_message)(void *provider, struct vsock_address src, struct vsock_address dst,
66 enum vsock_operation op, uint32_t buf_alloc, uint32_t fwd_cnt, mbuf_t m);
67};
68
69extern int vsock_add_transport(struct vsock_transport *transport);
70extern int vsock_remove_transport(struct vsock_transport *transport);
71extern int vsock_reset_transport(struct vsock_transport *transport);
72extern int vsock_put_message(struct vsock_address src, struct vsock_address dst,
73 enum vsock_operation op, uint32_t buf_alloc, uint32_t fwd_cnt, mbuf_t m);
74
75__END_DECLS
76
77#endif /* KERNEL_PRIVATE */
78#endif /* _VSOCK_TRANSPORT_H_ */
79