1 | /* |
2 | * Copyright (c) 2015 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 | #ifndef _NET_NET_PERF_H_ |
29 | #define _NET_NET_PERF_H_ |
30 | |
31 | #include <stdint.h> |
32 | |
33 | #ifdef KERNEL_PRIVATE |
34 | #include <sys/time.h> |
35 | #include <mach/boolean.h> |
36 | #endif /* KERNEL_PRIVATE */ |
37 | |
38 | /* five histogram bins are separated by four dividing "bars" */ |
39 | #define NET_PERF_BARS 4 |
40 | |
41 | typedef struct net_perf { |
42 | uint64_t np_total_pkts; /* total packets input or output during measurement */ |
43 | uint64_t np_total_usecs; /* microseconds elapsed during measurement */ |
44 | uint64_t np_hist1; /* histogram bin 1 */ |
45 | uint64_t np_hist2; /* histogram bin 2 */ |
46 | uint64_t np_hist3; /* histogram bin 3 */ |
47 | uint64_t np_hist4; /* histogram bin 4 */ |
48 | uint64_t np_hist5; /* histogram bin 5 */ |
49 | uint8_t np_hist_bars[NET_PERF_BARS]; |
50 | } net_perf_t; |
51 | |
52 | #ifdef KERNEL_PRIVATE |
53 | void net_perf_initialize(net_perf_t *npp, uint64_t bins); |
54 | void net_perf_start_time(net_perf_t *npp, struct timeval *tv); |
55 | void net_perf_measure_time(net_perf_t *npp, struct timeval *start, uint64_t num_pkts); |
56 | void net_perf_histogram(net_perf_t *npp, uint64_t num_pkts); |
57 | boolean_t net_perf_validate_bins(uint64_t bins); |
58 | |
59 | #endif /* KERNEL_PRIVATE */ |
60 | |
61 | #endif /* _NET_NET_PERF_H_ */ |
62 | |