+++ /dev/null
-/*
- * q_gred.c GRED.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Authors: J Hadi Salim(hadi@nortelnetworks.com)
- * code ruthlessly ripped from
- * Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
- *
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <fcntl.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <string.h>
-
-#include "utils.h"
-#include "tc_util.h"
-
-#include "tc_red.h"
-
-
-#if 0
-#define DPRINTF(format,args...) fprintf(stderr,format,##args)
-#else
-#define DPRINTF(format,args...)
-#endif
-
-static void explain(void)
-{
- fprintf(stderr, "Usage: ... gred DP drop-probability limit BYTES "
- "min BYTES max BYTES\n");
- fprintf(stderr, " avpkt BYTES burst PACKETS probability PROBABILITY "
- "bandwidth KBPS\n");
- fprintf(stderr, " [prio value]\n");
- fprintf(stderr," OR ...\n");
- fprintf(stderr," gred setup DPs <num of DPs> default <default DP> "
- "[grio]\n");
-}
-
-#define usage() return(-1)
-
-static int init_gred(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
-{
-
- struct rtattr *tail;
- struct tc_gred_sopt opt;
- memset(&opt, 0, sizeof(struct tc_gred_sopt));
-
- while (argc > 0) {
- DPRINTF(stderr,"init_gred: invoked with %s\n",*argv);
- if (strcmp(*argv, "DPs") == 0) {
- NEXT_ARG();
- DPRINTF(stderr,"init_gred: next_arg with %s\n",*argv);
- opt.DPs=strtol(*argv, (char **)NULL, 10);
- if (opt.DPs >MAX_DPs) { /* need a better error check */
- fprintf(stderr, "DPs =%u \n",opt.DPs);
- fprintf(stderr, "Illegal \"DPs\"\n");
- fprintf(stderr, "GRED: only %d DPs are "
- "currently supported\n",MAX_DPs);
- return -1;
- }
- } else if (strcmp(*argv, "default") == 0) {
- NEXT_ARG();
- opt.def_DP=strtol(*argv, (char **)NULL, 10);
- if (!opt.DPs) {
- fprintf(stderr, "\"default DP\" must be "
- "defined after DPs\n");
- return -1;
- }
- if (opt.def_DP>opt.DPs) {
-/*
- fprintf(stderr, "\"default DP\" must be less than %d\nNote: DP runs from 0 to %d for %d DPs\n",opt.DPs,opt.DPs-1,opt.DPs);
-*/
- fprintf(stderr, "\"default DP\" must be less than %d\n",opt.DPs);
- return -1;
- }
- } else if (strcmp(*argv, "grio") == 0) {
- opt.grio=1;
- } else if (strcmp(*argv, "help") == 0) {
- explain();
- return -1;
- } else {
- fprintf(stderr, "What is \"%s\"?\n", *argv);
- explain();
- return -1;
- }
- argc--; argv++;
-}
-
-if ((!opt.DPs) || (!opt.def_DP))
-{
- fprintf(stderr, "Illegal gred setup parameters \n");
- return -1;
-}
-DPRINTF("TC_GRED: sending DPs=%d default=%d\n",opt.DPs,opt.def_DP);
- n->nlmsg_flags|=NLM_F_CREATE;
- tail = NLMSG_TAIL(n);
- addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
- addattr_l(n, 1024, TCA_GRED_DPS, &opt, sizeof(struct tc_gred_sopt));
- tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
-return 0;
-}
-/*
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-*/
-static int gred_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
-{
- int ok=0;
- struct tc_gred_qopt opt;
- unsigned burst = 0;
- unsigned avpkt = 0;
- double probability = 0.02;
- unsigned rate = 0;
- int wlog;
- __u8 sbuf[256];
- struct rtattr *tail;
-
- memset(&opt, 0, sizeof(opt));
-
- while (argc > 0) {
- if (strcmp(*argv, "limit") == 0) {
- NEXT_ARG();
- if (get_size(&opt.limit, *argv)) {
- fprintf(stderr, "Illegal \"limit\"\n");
- return -1;
- }
- ok++;
- } else if (strcmp(*argv, "setup") == 0) {
- if (ok) {
- fprintf(stderr, "Illegal \"setup\"\n");
- return -1;
- }
- return init_gred(qu,argc-1, argv+1,n);
-
- } else if (strcmp(*argv, "min") == 0) {
- NEXT_ARG();
- if (get_size(&opt.qth_min, *argv)) {
- fprintf(stderr, "Illegal \"min\"\n");
- return -1;
- }
- ok++;
- } else if (strcmp(*argv, "max") == 0) {
- NEXT_ARG();
- if (get_size(&opt.qth_max, *argv)) {
- fprintf(stderr, "Illegal \"max\"\n");
- return -1;
- }
- ok++;
- } else if (strcmp(*argv, "DP") == 0) {
- NEXT_ARG();
- opt.DP=strtol(*argv, (char **)NULL, 10);
- DPRINTF ("\n ******* DP =%u\n",opt.DP);
- if (opt.DP >MAX_DPs) { /* need a better error check */
- fprintf(stderr, "DP =%u \n",opt.DP);
- fprintf(stderr, "Illegal \"DP\"\n");
- fprintf(stderr, "GRED: only %d DPs are currently supported\n",MAX_DPs);
- return -1;
- }
- ok++;
- } else if (strcmp(*argv, "burst") == 0) {
- NEXT_ARG();
- if (get_unsigned(&burst, *argv, 0)) {
- fprintf(stderr, "Illegal \"burst\"\n");
- return -1;
- }
- ok++;
- } else if (strcmp(*argv, "avpkt") == 0) {
- NEXT_ARG();
- if (get_size(&avpkt, *argv)) {
- fprintf(stderr, "Illegal \"avpkt\"\n");
- return -1;
- }
- ok++;
- } else if (strcmp(*argv, "probability") == 0) {
- NEXT_ARG();
- if (sscanf(*argv, "%lg", &probability) != 1) {
- fprintf(stderr, "Illegal \"probability\"\n");
- return -1;
- }
- ok++;
- } else if (strcmp(*argv, "prio") == 0) {
- NEXT_ARG();
- opt.prio=strtol(*argv, (char **)NULL, 10);
- /* some error check here */
- ok++;
- } else if (strcmp(*argv, "bandwidth") == 0) {
- NEXT_ARG();
- if (get_rate(&rate, *argv)) {
- fprintf(stderr, "Illegal \"bandwidth\"\n");
- return -1;
- }
- ok++;
- } else if (strcmp(*argv, "help") == 0) {
- explain();
- return -1;
- } else {
- fprintf(stderr, "What is \"%s\"?\n", *argv);
- explain();
- return -1;
- }
- argc--; argv++;
- }
-
- if (!ok)
- return 0;
-
- if (rate == 0)
- get_rate(&rate, "10Mbit");
-
- if (!opt.qth_min || !opt.qth_max || !burst || !opt.limit || !avpkt ||
- (opt.DP<0)) {
- fprintf(stderr, "Required parameter (min, max, burst, limit, "
- "avpket, DP) is missing\n");
- return -1;
- }
-
- if ((wlog = tc_red_eval_ewma(opt.qth_min, burst, avpkt)) < 0) {
- fprintf(stderr, "GRED: failed to calculate EWMA constant.\n");
- return -1;
- }
- if (wlog >= 10)
- fprintf(stderr, "GRED: WARNING. Burst %d seems to be to "
- "large.\n", burst);
- opt.Wlog = wlog;
- if ((wlog = tc_red_eval_P(opt.qth_min, opt.qth_max, probability)) < 0) {
- fprintf(stderr, "GRED: failed to calculate probability.\n");
- return -1;
- }
- opt.Plog = wlog;
- if ((wlog = tc_red_eval_idle_damping(opt.Wlog, avpkt, rate, sbuf)) < 0)
- {
- fprintf(stderr, "GRED: failed to calculate idle damping "
- "table.\n");
- return -1;
- }
- opt.Scell_log = wlog;
-
- tail = NLMSG_TAIL(n);
- addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
- addattr_l(n, 1024, TCA_GRED_PARMS, &opt, sizeof(opt));
- addattr_l(n, 1024, TCA_GRED_STAB, sbuf, 256);
- tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
- return 0;
-}
-
-static int gred_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
-{
- struct rtattr *tb[TCA_GRED_STAB+1];
- struct tc_gred_qopt *qopt;
- int i;
- SPRINT_BUF(b1);
- SPRINT_BUF(b2);
- SPRINT_BUF(b3);
- SPRINT_BUF(b4);
- SPRINT_BUF(b5);
-
- if (opt == NULL)
- return 0;
-
- parse_rtattr_nested(tb, TCA_GRED_STAB, opt);
-
- if (tb[TCA_GRED_PARMS] == NULL)
- return -1;
-
- qopt = RTA_DATA(tb[TCA_GRED_PARMS]);
- if (RTA_PAYLOAD(tb[TCA_GRED_PARMS]) < sizeof(*qopt)*MAX_DPs) {
- fprintf(f,"\n GRED received message smaller than expected\n");
- return -1;
- }
-
-/* Bad hack! should really return a proper message as shown above*/
-
- for (i=0;i<MAX_DPs;i++, qopt++) {
- if (qopt->DP >= MAX_DPs) continue;
- fprintf(f, "\n DP:%d (prio %d) Average Queue %s Measured "
- "Queue %s ",
- qopt->DP,
- qopt->prio,
- sprint_size(qopt->qave, b4),
- sprint_size(qopt->backlog, b5));
- fprintf(f, "\n\t Packet drops: %d (forced %d early %d) ",
- qopt->forced+qopt->early,
- qopt->forced,
- qopt->early);
- fprintf(f, "\n\t Packet totals: %u (bytes %u) ",
- qopt->packets,
- qopt->bytesin);
- if (show_details)
- fprintf(f, "\n limit %s min %s max %s ",
- sprint_size(qopt->limit, b1),
- sprint_size(qopt->qth_min, b2),
- sprint_size(qopt->qth_max, b3));
- fprintf(f, "ewma %u Plog %u Scell_log %u",
- qopt->Wlog, qopt->Plog, qopt->Scell_log);
- }
- return 0;
-}
-
-struct qdisc_util gred_qdisc_util = {
- .id = "gred",
- .parse_qopt = gred_parse_opt,
- .print_qopt = gred_print_opt,
-};
git://git.onelab.eu / iproute2.git / blobdiff