1aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger/* 2aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * q_red.c RED. 3aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * 4aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * This program is free software; you can redistribute it and/or 5aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * modify it under the terms of the GNU General Public License 6aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * as published by the Free Software Foundation; either version 7aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * 2 of the License, or (at your option) any later version. 8aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * 9aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> 10aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * 11aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger */ 12aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 13aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <stdio.h> 14aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <stdlib.h> 15aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <unistd.h> 16aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <syslog.h> 17aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <fcntl.h> 18aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <sys/socket.h> 19aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <netinet/in.h> 20aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <arpa/inet.h> 21aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <string.h> 22d798a0483ed6b3c7dcf84595b38a75e04ac0ee54Stephen Hemminger#include <math.h> 23aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 24aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include "utils.h" 25aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include "tc_util.h" 26aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 27aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include "tc_red.h" 28aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 29aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerstatic void explain(void) 30aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger{ 31841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet fprintf(stderr, "Usage: ... red limit BYTES [min BYTES] [max BYTES] avpkt BYTES [burst PACKETS]\n"); 3254a2fce832b6993c83ce0d6b6c9ee08317c1d90cEric Dumazet fprintf(stderr, " [adaptive] [probability PROBABILITY] bandwidth KBPS\n"); 33e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet fprintf(stderr, " [ecn] [harddrop]\n"); 34aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger} 35aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 36aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerstatic int red_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n) 37aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger{ 38aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger struct tc_red_qopt opt; 39aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger unsigned burst = 0; 40aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger unsigned avpkt = 0; 41aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger double probability = 0.02; 42aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger unsigned rate = 0; 43aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger int wlog; 44aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger __u8 sbuf[256]; 45e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet __u32 max_P; 46aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger struct rtattr *tail; 47aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 48aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger memset(&opt, 0, sizeof(opt)); 49aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 50aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger while (argc > 0) { 51aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (strcmp(*argv, "limit") == 0) { 52aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 53aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (get_size(&opt.limit, *argv)) { 54aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "Illegal \"limit\"\n"); 55aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 56aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 57aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (strcmp(*argv, "min") == 0) { 58aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 59aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (get_size(&opt.qth_min, *argv)) { 60aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "Illegal \"min\"\n"); 61aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 62aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 63aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (strcmp(*argv, "max") == 0) { 64aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 65aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (get_size(&opt.qth_max, *argv)) { 66aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "Illegal \"max\"\n"); 67aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 68aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 69aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (strcmp(*argv, "burst") == 0) { 70aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 71aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (get_unsigned(&burst, *argv, 0)) { 72aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "Illegal \"burst\"\n"); 73aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 74aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 75aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (strcmp(*argv, "avpkt") == 0) { 76aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 77aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (get_size(&avpkt, *argv)) { 78aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "Illegal \"avpkt\"\n"); 79aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 80aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 81aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (strcmp(*argv, "probability") == 0) { 82aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 83aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (sscanf(*argv, "%lg", &probability) != 1) { 84aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "Illegal \"probability\"\n"); 85aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 86aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 87aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (strcmp(*argv, "bandwidth") == 0) { 88aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 89aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (get_rate(&rate, *argv)) { 90aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "Illegal \"bandwidth\"\n"); 91aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 92aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 93aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (strcmp(*argv, "ecn") == 0) { 94841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet opt.flags |= TC_RED_ECN; 95841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet } else if (strcmp(*argv, "harddrop") == 0) { 96841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet opt.flags |= TC_RED_HARDDROP; 97e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet } else if (strcmp(*argv, "adaptative") == 0) { 98e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet opt.flags |= TC_RED_ADAPTATIVE; 9954a2fce832b6993c83ce0d6b6c9ee08317c1d90cEric Dumazet } else if (strcmp(*argv, "adaptive") == 0) { 10054a2fce832b6993c83ce0d6b6c9ee08317c1d90cEric Dumazet opt.flags |= TC_RED_ADAPTATIVE; 101aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (strcmp(*argv, "help") == 0) { 102aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger explain(); 103aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 104aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else { 105aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "What is \"%s\"?\n", *argv); 106aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger explain(); 107aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 108aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 109aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger argc--; argv++; 110aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 111aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 112aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (rate == 0) 113aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger get_rate(&rate, "10Mbit"); 114aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 115841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet if (!opt.limit || !avpkt) { 116841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet fprintf(stderr, "RED: Required parameter (limit, avpkt) is missing\n"); 117aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 118aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 119841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet /* Compute default min/max thresholds based on 120841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet * Sally Floyd's recommendations: 121841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet * http://www.icir.org/floyd/REDparameters.txt 122841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet */ 123841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet if (!opt.qth_max) 124841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet opt.qth_max = opt.qth_min ? opt.qth_min * 3 : opt.limit / 4; 125841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet if (!opt.qth_min) 126841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet opt.qth_min = opt.qth_max / 3; 127841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet if (!burst) 128ab15aeacf5a106cfb8e72cd6760e8cf134161cebEric Dumazet burst = (2 * opt.qth_min + opt.qth_max) / (3 * avpkt); 129aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if ((wlog = tc_red_eval_ewma(opt.qth_min, burst, avpkt)) < 0) { 130aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "RED: failed to calculate EWMA constant.\n"); 131aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 132aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 133aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (wlog >= 10) 134ab15aeacf5a106cfb8e72cd6760e8cf134161cebEric Dumazet fprintf(stderr, "RED: WARNING. Burst %d seems to be too large.\n", burst); 135aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger opt.Wlog = wlog; 136aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if ((wlog = tc_red_eval_P(opt.qth_min, opt.qth_max, probability)) < 0) { 137aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "RED: failed to calculate probability.\n"); 138aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 139aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 140aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger opt.Plog = wlog; 141aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if ((wlog = tc_red_eval_idle_damping(opt.Wlog, avpkt, rate, sbuf)) < 0) { 142aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "RED: failed to calculate idle damping table.\n"); 143aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 144aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 145aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger opt.Scell_log = wlog; 146aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 147228569c3ff79468f4c7580fd88b0d6a34ebdc311n); tail = NLMSG_TAIL(n); 148aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger addattr_l(n, 1024, TCA_OPTIONS, NULL, 0); 149aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger addattr_l(n, 1024, TCA_RED_PARMS, &opt, sizeof(opt)); 150aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger addattr_l(n, 1024, TCA_RED_STAB, sbuf, 256); 151e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet max_P = probability * pow(2, 32); 152e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet addattr_l(n, 1024, TCA_RED_MAX_P, &max_P, sizeof(max_P)); 153228569c3ff79468f4c7580fd88b0d6a34ebdc311void *) NLMSG_TAIL(n) - (void *) tail; tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail; 154aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return 0; 155aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger} 156aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 157aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerstatic int red_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) 158aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger{ 159841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet struct rtattr *tb[TCA_RED_MAX + 1]; 160aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger struct tc_red_qopt *qopt; 161e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet __u32 max_P = 0; 162aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger SPRINT_BUF(b1); 163aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger SPRINT_BUF(b2); 164aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger SPRINT_BUF(b3); 165aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 166aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (opt == NULL) 167aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return 0; 168aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 169841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet parse_rtattr_nested(tb, TCA_RED_MAX, opt); 170aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 171aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (tb[TCA_RED_PARMS] == NULL) 172aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 173aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger qopt = RTA_DATA(tb[TCA_RED_PARMS]); 174aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (RTA_PAYLOAD(tb[TCA_RED_PARMS]) < sizeof(*qopt)) 175aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 176e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet 177e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet if (tb[TCA_RED_MAX_P] && 178e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet RTA_PAYLOAD(tb[TCA_RED_MAX_P]) >= sizeof(__u32)) 179ff24746cca1ef0c92d46614158e6672acd6b63d3Stephen Hemminger max_P = rta_getattr_u32(tb[TCA_RED_MAX_P]); 180e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet 181aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(f, "limit %s min %s max %s ", 182aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger sprint_size(qopt->limit, b1), 183aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger sprint_size(qopt->qth_min, b2), 184aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger sprint_size(qopt->qth_max, b3)); 185aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (qopt->flags & TC_RED_ECN) 186aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(f, "ecn "); 187841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet if (qopt->flags & TC_RED_HARDDROP) 188841fc7bc983d2f8d8de589c151d2f8bdf8d73b18Eric Dumazet fprintf(f, "harddrop "); 189e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet if (qopt->flags & TC_RED_ADAPTATIVE) 19054a2fce832b6993c83ce0d6b6c9ee08317c1d90cEric Dumazet fprintf(f, "adaptive "); 191aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (show_details) { 192e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet fprintf(f, "ewma %u ", qopt->Wlog); 193e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet if (max_P) 194e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet fprintf(f, "probability %lg ", max_P / pow(2, 32)); 195e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet else 196e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet fprintf(f, "Plog %u ", qopt->Plog); 197e7e4abea3e9f37ac18ce3f104ac8e61b5f144459Eric Dumazet fprintf(f, "Scell_log %u", qopt->Scell_log); 198aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 199aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return 0; 200aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger} 201aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 202aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerstatic int red_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstats) 203aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger{ 204aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#ifdef TC_RED_ECN 205aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger struct tc_red_xstats *st; 206aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 207aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (xstats == NULL) 208aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return 0; 209aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 210aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (RTA_PAYLOAD(xstats) < sizeof(*st)) 211aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 212aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 213aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger st = RTA_DATA(xstats); 214aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(f, " marked %u early %u pdrop %u other %u", 215aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger st->marked, st->early, st->pdrop, st->other); 216aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return 0; 217ae665a522bd46bea44c5ea84c89c8b1731954170Stephen Hemminger 218aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#endif 219aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return 0; 220aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger} 221aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 222aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 22395812b56a5a66e7e9a21744cfe8bc0bb9791ea98net[shemminger]!kaberstruct qdisc_util red_qdisc_util = { 224f2f99e2eefdbd9cb6a750b19a7b3036db351b983osdl.net!shemminger .id = "red", 225f2f99e2eefdbd9cb6a750b19a7b3036db351b983osdl.net!shemminger .parse_qopt = red_parse_opt, 226f2f99e2eefdbd9cb6a750b19a7b3036db351b983osdl.net!shemminger .print_qopt = red_print_opt, 227f2f99e2eefdbd9cb6a750b19a7b3036db351b983osdl.net!shemminger .print_xstats = red_print_xstats, 228aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger}; 229