mirror of
https://github.com/darlinghq/darling-xnu.git
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106 lines
3.3 KiB
C
106 lines
3.3 KiB
C
/*
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* Copyright (c) 2015 Apple Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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#include <net/if_var.h>
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#include <net/net_perf.h>
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#include <netinet/in_var.h>
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#include <sys/sysctl.h>
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static void ip_perf_record_stats(net_perf_t *npp, struct timeval *tv1,
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struct timeval *tv2, uint64_t num_pkts);
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static void update_bins(net_perf_t *npp, uint64_t bins);
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void
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net_perf_start_time(net_perf_t *npp, struct timeval *tv)
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{
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#pragma unused(npp)
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microtime(tv);
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}
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void
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net_perf_measure_time(net_perf_t *npp, struct timeval *start, uint64_t num_pkts)
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{
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struct timeval stop;
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microtime(&stop);
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ip_perf_record_stats(npp, start, &stop, num_pkts);
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}
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static void
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ip_perf_record_stats(net_perf_t *npp, struct timeval *tv1, struct timeval *tv2, uint64_t num_pkts)
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{
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struct timeval tv_diff;
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uint64_t usecs;
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timersub(tv2, tv1, &tv_diff);
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usecs = tv_diff.tv_sec * 1000000ULL + tv_diff.tv_usec;
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OSAddAtomic64(usecs, &npp->np_total_usecs);
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OSAddAtomic64(num_pkts, &npp->np_total_pkts);
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}
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static void
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update_bins(net_perf_t *npp, uint64_t bins)
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{
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bzero(&npp->np_hist_bars, sizeof(npp->np_hist_bars));
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for (uint8_t i = 1, j = 0; i <= 64 && j < NET_PERF_BARS; i++) {
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if (bins & 0x1) {
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npp->np_hist_bars[j] = i;
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j++;
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}
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bins >>= 1;
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}
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}
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void
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net_perf_initialize(net_perf_t *npp, uint64_t bins)
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{
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bzero(npp, sizeof(net_perf_t));
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/* initialize np_hist_bars array */
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update_bins(npp, bins);
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}
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void
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net_perf_histogram(net_perf_t *npp, uint64_t num_pkts)
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{
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if (num_pkts <= npp->np_hist_bars[0]) {
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OSAddAtomic64(num_pkts, &npp->np_hist1);
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} else if (npp->np_hist_bars[0] < num_pkts && num_pkts <= npp->np_hist_bars[1]) {
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OSAddAtomic64(num_pkts, &npp->np_hist2);
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} else if (npp->np_hist_bars[1] < num_pkts && num_pkts <= npp->np_hist_bars[2]) {
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OSAddAtomic64(num_pkts, &npp->np_hist3);
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} else if (npp->np_hist_bars[2] < num_pkts && num_pkts <= npp->np_hist_bars[3]) {
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OSAddAtomic64(num_pkts, &npp->np_hist4);
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} else if (npp->np_hist_bars[3] < num_pkts) {
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OSAddAtomic64(num_pkts, &npp->np_hist5);
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}
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}
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boolean_t
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net_perf_validate_bins(uint64_t bins)
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{
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return NET_PERF_BARS == __builtin_popcountll(bins);
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}
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