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