+++ /dev/null
-/*
- * q_htb.c HTB.
- *
- * 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: Martin Devera, devik@cdi.cz
- *
- */
-
-#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"
-
-#define HTB_TC_VER 0x30003
-#if HTB_TC_VER >> 16 != TC_HTB_PROTOVER
-#error "Different kernel and TC HTB versions"
-#endif
-
-static void explain(void)
-{
- fprintf(stderr, "Usage: ... qdisc add ... htb [default N] [r2q N]\n"
- " default minor id of class to which unclassified packets are sent {0}\n"
- " r2q DRR quantums are computed as rate in Bps/r2q {10}\n"
- " debug string of 16 numbers each 0-3 {0}\n\n"
- "... class add ... htb rate R1 [burst B1] [mpu B] [overhead O]\n"
- " [prio P] [slot S] [pslot PS]\n"
- " [ceil R2] [cburst B2] [mtu MTU] [quantum Q]\n"
- " rate rate allocated to this class (class can still borrow)\n"
- " burst max bytes burst which can be accumulated during idle period {computed}\n"
- " mpu minimum packet size used in rate computations\n"
- " overhead per-packet size overhead used in rate computations\n"
-
- " ceil definite upper class rate (no borrows) {rate}\n"
- " cburst burst but for ceil {computed}\n"
- " mtu max packet size we create rate map for {1600}\n"
- " prio priority of leaf; lower are served first {0}\n"
- " quantum how much bytes to serve from leaf at once {use r2q}\n"
- "\nTC HTB version %d.%d\n",HTB_TC_VER>>16,HTB_TC_VER&0xffff
- );
-}
-
-static void explain1(char *arg)
-{
- fprintf(stderr, "Illegal \"%s\"\n", arg);
- explain();
-}
-
-
-#define usage() return(-1)
-
-static int htb_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
-{
- struct tc_htb_glob opt;
- struct rtattr *tail;
- unsigned i; char *p;
- memset(&opt,0,sizeof(opt));
- opt.rate2quantum = 10;
- opt.version = 3;
-
- while (argc > 0) {
- if (matches(*argv, "r2q") == 0) {
- NEXT_ARG();
- if (get_u32(&opt.rate2quantum, *argv, 10)) {
- explain1("r2q"); return -1;
- }
- } else if (matches(*argv, "default") == 0) {
- NEXT_ARG();
- if (get_u32(&opt.defcls, *argv, 16)) {
- explain1("default"); return -1;
- }
- } else if (matches(*argv, "debug") == 0) {
- NEXT_ARG(); p = *argv;
- for (i=0; i<16; i++,p++) {
- if (*p<'0' || *p>'3') break;
- opt.debug |= (*p-'0')<<(2*i);
- }
- } else {
- fprintf(stderr, "What is \"%s\"?\n", *argv);
- explain();
- return -1;
- }
- argc--; argv++;
- }
- tail = NLMSG_TAIL(n);
- addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
- addattr_l(n, 2024, TCA_HTB_INIT, &opt, NLMSG_ALIGN(sizeof(opt)));
- tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
- return 0;
-}
-
-static int htb_parse_class_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
-{
- int ok=0;
- struct tc_htb_opt opt;
- __u32 rtab[256],ctab[256];
- unsigned buffer=0,cbuffer=0;
- int cell_log=-1,ccell_log = -1;
- unsigned mtu, mpu;
- unsigned char mpu8 = 0, overhead = 0;
- struct rtattr *tail;
-
- memset(&opt, 0, sizeof(opt)); mtu = 1600; /* eth packet len */
-
- while (argc > 0) {
- if (matches(*argv, "prio") == 0) {
- NEXT_ARG();
- if (get_u32(&opt.prio, *argv, 10)) {
- explain1("prio"); return -1;
- }
- ok++;
- } else if (matches(*argv, "mtu") == 0) {
- NEXT_ARG();
- if (get_u32(&mtu, *argv, 10)) {
- explain1("mtu"); return -1;
- }
- } else if (matches(*argv, "mpu") == 0) {
- NEXT_ARG();
- if (get_u8(&mpu8, *argv, 10)) {
- explain1("mpu"); return -1;
- }
- } else if (matches(*argv, "overhead") == 0) {
- NEXT_ARG();
- if (get_u8(&overhead, *argv, 10)) {
- explain1("overhead"); return -1;
- }
- } else if (matches(*argv, "quantum") == 0) {
- NEXT_ARG();
- if (get_u32(&opt.quantum, *argv, 10)) {
- explain1("quantum"); return -1;
- }
- } else if (matches(*argv, "burst") == 0 ||
- strcmp(*argv, "buffer") == 0 ||
- strcmp(*argv, "maxburst") == 0) {
- NEXT_ARG();
- if (get_size_and_cell(&buffer, &cell_log, *argv) < 0) {
- explain1("buffer");
- return -1;
- }
- ok++;
- } else if (matches(*argv, "cburst") == 0 ||
- strcmp(*argv, "cbuffer") == 0 ||
- strcmp(*argv, "cmaxburst") == 0) {
- NEXT_ARG();
- if (get_size_and_cell(&cbuffer, &ccell_log, *argv) < 0) {
- explain1("cbuffer");
- return -1;
- }
- ok++;
- } else if (strcmp(*argv, "ceil") == 0) {
- NEXT_ARG();
- if (opt.ceil.rate) {
- fprintf(stderr, "Double \"ceil\" spec\n");
- return -1;
- }
- if (get_rate(&opt.ceil.rate, *argv)) {
- explain1("ceil");
- return -1;
- }
- ok++;
- } else if (strcmp(*argv, "rate") == 0) {
- NEXT_ARG();
- if (opt.rate.rate) {
- fprintf(stderr, "Double \"rate\" spec\n");
- return -1;
- }
- if (get_rate(&opt.rate.rate, *argv)) {
- explain1("rate");
- 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 (opt.rate.rate == 0) {
- fprintf(stderr, "\"rate\" is required.\n");
- return -1;
- }
- /* if ceil params are missing, use the same as rate */
- if (!opt.ceil.rate) opt.ceil = opt.rate;
-
- /* compute minimal allowed burst from rate; mtu is added here to make
- sute that buffer is larger than mtu and to have some safeguard space */
- if (!buffer) buffer = opt.rate.rate / get_hz() + mtu;
- if (!cbuffer) cbuffer = opt.ceil.rate / get_hz() + mtu;
-
-/* encode overhead and mpu, 8 bits each, into lower 16 bits */
- mpu = (unsigned)mpu8 | (unsigned)overhead << 8;
- opt.ceil.mpu = mpu; opt.rate.mpu = mpu;
-
- if ((cell_log = tc_calc_rtable(opt.rate.rate, rtab, cell_log, mtu, mpu)) < 0) {
- fprintf(stderr, "htb: failed to calculate rate table.\n");
- return -1;
- }
- opt.buffer = tc_calc_xmittime(opt.rate.rate, buffer);
- opt.rate.cell_log = cell_log;
-
- if ((ccell_log = tc_calc_rtable(opt.ceil.rate, ctab, cell_log, mtu, mpu)) < 0) {
- fprintf(stderr, "htb: failed to calculate ceil rate table.\n");
- return -1;
- }
- opt.cbuffer = tc_calc_xmittime(opt.ceil.rate, cbuffer);
- opt.ceil.cell_log = ccell_log;
-
- tail = NLMSG_TAIL(n);
- addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
- addattr_l(n, 2024, TCA_HTB_PARMS, &opt, sizeof(opt));
- addattr_l(n, 3024, TCA_HTB_RTAB, rtab, 1024);
- addattr_l(n, 4024, TCA_HTB_CTAB, ctab, 1024);
- tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
- return 0;
-}
-
-static int htb_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
-{
- struct rtattr *tb[TCA_HTB_RTAB+1];
- struct tc_htb_opt *hopt;
- struct tc_htb_glob *gopt;
- double buffer,cbuffer;
- SPRINT_BUF(b1);
- SPRINT_BUF(b2);
- SPRINT_BUF(b3);
-
- if (opt == NULL)
- return 0;
-
- parse_rtattr_nested(tb, TCA_HTB_RTAB, opt);
-
- if (tb[TCA_HTB_PARMS]) {
-
- hopt = RTA_DATA(tb[TCA_HTB_PARMS]);
- if (RTA_PAYLOAD(tb[TCA_HTB_PARMS]) < sizeof(*hopt)) return -1;
-
- if (!hopt->level) {
- fprintf(f, "prio %d ", (int)hopt->prio);
- if (show_details)
- fprintf(f, "quantum %d ", (int)hopt->quantum);
- }
- fprintf(f, "rate %s ", sprint_rate(hopt->rate.rate, b1));
- buffer = ((double)hopt->rate.rate*tc_core_tick2usec(hopt->buffer))/1000000;
- fprintf(f, "ceil %s ", sprint_rate(hopt->ceil.rate, b1));
- cbuffer = ((double)hopt->ceil.rate*tc_core_tick2usec(hopt->cbuffer))/1000000;
- if (show_details) {
- fprintf(f, "burst %s/%u mpu %s overhead %s ",
- sprint_size(buffer, b1),
- 1<<hopt->rate.cell_log,
- sprint_size(hopt->rate.mpu&0xFF, b2),
- sprint_size((hopt->rate.mpu>>8)&0xFF, b3));
- fprintf(f, "cburst %s/%u mpu %s overhead %s ",
- sprint_size(cbuffer, b1),
- 1<<hopt->ceil.cell_log,
- sprint_size(hopt->ceil.mpu&0xFF, b2),
- sprint_size((hopt->ceil.mpu>>8)&0xFF, b3));
- fprintf(f, "level %d ", (int)hopt->level);
- } else {
- fprintf(f, "burst %s ", sprint_size(buffer, b1));
- fprintf(f, "cburst %s ", sprint_size(cbuffer, b1));
- }
- if (show_raw)
- fprintf(f, "buffer [%08x] cbuffer [%08x] ",
- hopt->buffer,hopt->cbuffer);
- }
- if (tb[TCA_HTB_INIT]) {
- gopt = RTA_DATA(tb[TCA_HTB_INIT]);
- if (RTA_PAYLOAD(tb[TCA_HTB_INIT]) < sizeof(*gopt)) return -1;
-
- fprintf(f, "r2q %d default %x direct_packets_stat %u",
- gopt->rate2quantum,gopt->defcls,gopt->direct_pkts);
- if (show_details)
- fprintf(f," ver %d.%d",gopt->version >> 16,gopt->version & 0xffff);
- }
- return 0;
-}
-
-static int htb_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstats)
-{
- struct tc_htb_xstats *st;
- if (xstats == NULL)
- return 0;
-
- if (RTA_PAYLOAD(xstats) < sizeof(*st))
- return -1;
-
- st = RTA_DATA(xstats);
- fprintf(f, " lended: %u borrowed: %u giants: %u\n",
- st->lends,st->borrows,st->giants);
- fprintf(f, " tokens: %d ctokens: %d\n", st->tokens,st->ctokens);
- return 0;
-}
-
-struct qdisc_util htb_qdisc_util = {
- .id = "htb",
- .parse_qopt = htb_parse_opt,
- .print_qopt = htb_print_opt,
- .print_xstats = htb_print_xstats,
- .parse_copt = htb_parse_class_opt,
- .print_copt = htb_print_opt,
-};
-
-/* for testing of old one */
-struct qdisc_util htb2_qdisc_util = {
- .id = "htb2",
- .parse_qopt = htb_parse_opt,
- .print_qopt = htb_print_opt,
- .print_xstats = htb_print_xstats,
- .parse_copt = htb_parse_class_opt,
- .print_copt = htb_print_opt,
-};
git://git.onelab.eu / iproute2.git / blobdiff