1 /*
2 * Copyright (c) 2017-2024 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 #include <sys/sysctl.h>
30
31 __private_extern__ void
skmem_sysctl_init(void)32 skmem_sysctl_init(void)
33 {
34 // TCP values
35 skmem_sysctl *__single sysctls = skmem_get_sysctls_obj(NULL);
36 if (sysctls) {
37 sysctls->version = SKMEM_SYSCTL_VERSION;
38 #define X(type, field, default_value) \
39 extern struct sysctl_oid sysctl__net_inet_tcp_##field; \
40 sysctls->tcp.field = *(type*)sysctl__net_inet_tcp_##field.oid_arg1;
41 SKMEM_SYSCTL_TCP_LIST
42 #undef X
43 }
44 }
45
46 __private_extern__ int
skmem_sysctl_handle_int(__unused struct sysctl_oid * oidp,void * arg1,int arg2,struct sysctl_req * req)47 skmem_sysctl_handle_int(__unused struct sysctl_oid *oidp, void *arg1,
48 int arg2, struct sysctl_req *req)
49 {
50 int changed = 0;
51 int result = sysctl_io_number(req, *(int*)arg1, sizeof(int), arg1,
52 &changed);
53 if (changed) {
54 SYSCTL_SKMEM_UPDATE_AT_OFFSET(arg2, *(int*)arg1);
55 }
56 return result;
57 }
58