1a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger/* 2a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger * q_choke.c CHOKE. 3a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger * 4a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger * This program is free software; you can redistribute it and/or 5a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger * modify it under the terms of the GNU General Public License 6a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger * as published by the Free Software Foundation; either version 7a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger * 2 of the License, or (at your option) any later version. 8a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger * 9a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger * Authors: Stephen Hemminger <shemminger@vyatta.com> 10a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger */ 11a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 12a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger#include <stdio.h> 13a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger#include <stdlib.h> 14a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger#include <unistd.h> 15a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger#include <syslog.h> 16a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger#include <fcntl.h> 17a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger#include <sys/socket.h> 18a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger#include <netinet/in.h> 19a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger#include <arpa/inet.h> 20a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger#include <string.h> 21650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet#include <math.h> 22a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 23a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger#include "utils.h" 24a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger#include "tc_util.h" 25a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 26a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger#include "tc_red.h" 27a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 28a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemmingerstatic void explain(void) 29a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger{ 30a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "Usage: ... choke limit PACKETS bandwidth KBPS [ecn]\n"); 31a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, " [ min PACKETS ] [ max PACKETS ] [ burst PACKETS ]\n"); 32a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger} 33a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 34a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemmingerstatic int choke_parse_opt(struct qdisc_util *qu, int argc, char **argv, 35a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger struct nlmsghdr *n) 36a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger{ 37a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger struct tc_red_qopt opt; 38a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger unsigned burst = 0; 39a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger unsigned avpkt = 1000; 40a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger double probability = 0.02; 41a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger unsigned rate = 0; 42a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger int ecn_ok = 0; 43a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger int wlog; 44a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger __u8 sbuf[256]; 45650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet __u32 max_P; 46a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger struct rtattr *tail; 47a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 48a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger memset(&opt, 0, sizeof(opt)); 49a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 50a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger while (argc > 0) { 51a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (strcmp(*argv, "limit") == 0) { 52a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger NEXT_ARG(); 53a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (get_unsigned(&opt.limit, *argv, 0)) { 54a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "Illegal \"limit\"\n"); 55a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 56a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 57a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } else if (strcmp(*argv, "bandwidth") == 0) { 58a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger NEXT_ARG(); 59a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (get_rate(&rate, *argv)) { 60a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "Illegal \"bandwidth\"\n"); 61a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 62a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 63a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } else if (strcmp(*argv, "ecn") == 0) { 64a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger ecn_ok = 1; 65a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } else if (strcmp(*argv, "min") == 0) { 66a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger NEXT_ARG(); 67a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (get_unsigned(&opt.qth_min, *argv, 0)) { 68a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "Illegal \"min\"\n"); 69a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 70a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 71a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } else if (strcmp(*argv, "max") == 0) { 72a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger NEXT_ARG(); 73a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (get_unsigned(&opt.qth_max, *argv, 0)) { 74a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "Illegal \"max\"\n"); 75a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 76a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 77a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } else if (strcmp(*argv, "burst") == 0) { 78a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger NEXT_ARG(); 79a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (get_unsigned(&burst, *argv, 0)) { 80a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "Illegal \"burst\"\n"); 81a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 82a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 83a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } else if (strcmp(*argv, "avpkt") == 0) { 84a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger NEXT_ARG(); 85a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (get_size(&avpkt, *argv)) { 86a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "Illegal \"avpkt\"\n"); 87a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 88a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 89a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } else if (strcmp(*argv, "probability") == 0) { 90a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger NEXT_ARG(); 91a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (sscanf(*argv, "%lg", &probability) != 1) { 92a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "Illegal \"probability\"\n"); 93a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 94a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 95a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } else if (strcmp(*argv, "help") == 0) { 96a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger explain(); 97a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 98a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } else { 99a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "What is \"%s\"?\n", *argv); 100a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger explain(); 101a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 102a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 103a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger argc--; argv++; 104a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 105a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 106a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (!rate || !opt.limit) { 107a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "Required parameter (bandwidth, limit) is missing\n"); 108a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 109a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 110a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 111a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger /* Compute default min/max thresholds based on 112a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger Sally Floyd's recommendations: 113a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger http://www.icir.org/floyd/REDparameters.txt 114a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger */ 115a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (!opt.qth_max) 116a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger opt.qth_max = opt.limit / 4; 117a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (!opt.qth_min) 118a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger opt.qth_min = opt.qth_max / 3; 119a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (!burst) 120a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger burst = (2 * opt.qth_min + opt.qth_max) / 3; 121a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 122a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (opt.qth_max > opt.limit) { 123a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "\"max\" is larger than \"limit\"\n"); 124a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 125a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 126a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 1279f1ba57016da5e65b83092f5ab05565091e0879dThomas Jarosch if (opt.qth_min >= opt.qth_max) { 128a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "\"min\" is not smaller than \"max\"\n"); 129a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 130a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 131a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 132a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger wlog = tc_red_eval_ewma(opt.qth_min*avpkt, burst, avpkt); 133a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (wlog < 0) { 134a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "CHOKE: failed to calculate EWMA constant.\n"); 135a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 136a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 137a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (wlog >= 10) 138ab15aeacf5a106cfb8e72cd6760e8cf134161cebEric Dumazet fprintf(stderr, "CHOKE: WARNING. Burst %d seems to be too large.\n", burst); 139a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger opt.Wlog = wlog; 140a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 141a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger wlog = tc_red_eval_P(opt.qth_min*avpkt, opt.qth_max*avpkt, probability); 142a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (wlog < 0) { 143a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "CHOKE: failed to calculate probability.\n"); 144a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 145a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 146a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger opt.Plog = wlog; 147a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 148a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger wlog = tc_red_eval_idle_damping(opt.Wlog, avpkt, rate, sbuf); 149a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (wlog < 0) { 150a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(stderr, "CHOKE: failed to calculate idle damping table.\n"); 151a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 152a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 153a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger opt.Scell_log = wlog; 154a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (ecn_ok) 155a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger opt.flags |= TC_RED_ECN; 156a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 157a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger tail = NLMSG_TAIL(n); 158a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger addattr_l(n, 1024, TCA_OPTIONS, NULL, 0); 159a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger addattr_l(n, 1024, TCA_CHOKE_PARMS, &opt, sizeof(opt)); 160a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger addattr_l(n, 1024, TCA_CHOKE_STAB, sbuf, 256); 161650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet max_P = probability * pow(2, 32); 162650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet addattr_l(n, 1024, TCA_CHOKE_MAX_P, &max_P, sizeof(max_P)); 163a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail; 164a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return 0; 165a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger} 166a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 167a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemmingerstatic int choke_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) 168a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger{ 169650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet struct rtattr *tb[TCA_CHOKE_MAX+1]; 170a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger const struct tc_red_qopt *qopt; 171650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet __u32 max_P = 0; 172a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 173a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (opt == NULL) 174a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return 0; 175a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 176650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet parse_rtattr_nested(tb, TCA_CHOKE_MAX, opt); 177a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 178a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (tb[TCA_CHOKE_PARMS] == NULL) 179a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 180a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger qopt = RTA_DATA(tb[TCA_CHOKE_PARMS]); 181a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (RTA_PAYLOAD(tb[TCA_CHOKE_PARMS]) < sizeof(*qopt)) 182a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 183650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet if (tb[TCA_CHOKE_MAX_P] && 184650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet RTA_PAYLOAD(tb[TCA_CHOKE_MAX_P]) >= sizeof(__u32)) 185ff24746cca1ef0c92d46614158e6672acd6b63d3Stephen Hemminger max_P = rta_getattr_u32(tb[TCA_CHOKE_MAX_P]); 186a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 187a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(f, "limit %up min %up max %up ", 188a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger qopt->limit, qopt->qth_min, qopt->qth_max); 189a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 190a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (qopt->flags & TC_RED_ECN) 191a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(f, "ecn "); 192a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 193a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (show_details) { 194650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet fprintf(f, "ewma %u ", qopt->Wlog); 195650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet if (max_P) 196650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet fprintf(f, "probability %g ", max_P / pow(2, 32)); 197650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet else 198650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet fprintf(f, "Plog %u ", qopt->Plog); 199650252d8c36453dd08de3e67235d8f326ba451ecEric Dumazet fprintf(f, "Scell_log %u", qopt->Scell_log); 200a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger } 201a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return 0; 202a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger} 203a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 204a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemmingerstatic int choke_print_xstats(struct qdisc_util *qu, FILE *f, 205a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger struct rtattr *xstats) 206a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger{ 207a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger struct tc_choke_xstats *st; 208a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 209a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (xstats == NULL) 210a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return 0; 211a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 212a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger if (RTA_PAYLOAD(xstats) < sizeof(*st)) 213a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return -1; 214a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 215a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger st = RTA_DATA(xstats); 216a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger fprintf(f, " marked %u early %u pdrop %u other %u matched %u", 217a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger st->marked, st->early, st->pdrop, st->other, st->matched); 218a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger return 0; 219a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 220a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger} 221a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger 222a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemmingerstruct qdisc_util choke_qdisc_util = { 223a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger .id = "choke", 224a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger .parse_qopt = choke_parse_opt, 225a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger .print_qopt = choke_print_opt, 226a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger .print_xstats = choke_print_xstats, 227a4eca97cff0391d73b4ad4d5598cdc9a35771fa4Stephen Hemminger}; 228