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
41typedef 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
53void net_perf_initialize(net_perf_t *npp, uint64_t bins);
54void net_perf_start_time(net_perf_t *npp, struct timeval *tv);
55void net_perf_measure_time(net_perf_t *npp, struct timeval *start, uint64_t num_pkts);
56void net_perf_histogram(net_perf_t *npp, uint64_t num_pkts);
57boolean_t net_perf_validate_bins(uint64_t bins);
58
59#endif /* KERNEL_PRIVATE */
60
61#endif /* _NET_NET_PERF_H_ */
62