1 /*
2 * Copyright (c) 2000-2021 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 _NETINET_TCP_UTILS_H_
30 #define _NETINET_TCP_UTILS_H_
31
32 #include <kern/mem_acct.h>
33 #include <netinet/tcp_var.h>
34
35 struct tcp_globals {};
36
37 static inline struct tcp_globals *
tcp_get_globals(struct tcpcb * tp)38 tcp_get_globals(struct tcpcb *tp)
39 {
40 #pragma unused(tp)
41 return NULL;
42 }
43
44 static inline uint32_t
tcp_globals_now(struct tcp_globals * globals)45 tcp_globals_now(struct tcp_globals *globals)
46 {
47 #pragma unused(globals)
48 return tcp_now;
49 }
50
51 extern void tcp_ccdbg_control_register(void);
52 extern void tcp_ccdbg_trace(struct tcpcb *tp, struct tcphdr *th, int32_t event);
53
54 static inline void
tcp_memacct_add(unsigned int size)55 tcp_memacct_add(unsigned int size)
56 {
57 mem_acct_add(tcp_memacct, size);
58 }
59
60 static inline void
tcp_memacct_sub(unsigned int size)61 tcp_memacct_sub(unsigned int size)
62 {
63 mem_acct_sub(tcp_memacct, size);
64 }
65
66 static inline int
tcp_memacct_limited(void)67 tcp_memacct_limited(void)
68 {
69 return mem_acct_limited(tcp_memacct);
70 }
71
72 static inline bool
tcp_memacct_hardlimit(void)73 tcp_memacct_hardlimit(void)
74 {
75 return mem_acct_limited(tcp_memacct) == MEMACCT_HARDLIMIT;
76 }
77
78 static inline bool
tcp_memacct_softlimit(void)79 tcp_memacct_softlimit(void)
80 {
81 return mem_acct_limited(tcp_memacct) > MEMACCT_PRESOFTLIMIT;
82 }
83
84 #endif /* _NETINET_TCP_UTILS_H_ */
85