--- /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