4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Authors: Patrick McHardy, <kaber@trash.net>
18 #include <sys/socket.h>
19 #include <netinet/in.h>
20 #include <arpa/inet.h>
27 static int hfsc_get_sc(int *, char ***, struct tc_service_curve *);
34 "Usage: ... hfsc [ default CLASSID ]\n"
36 " default: default class for unclassified packets\n"
44 "Usage: ... hfsc [ [ rt SC ] [ ls SC ] | [ sc SC ] ] [ ul SC ]\n"
46 "SC := [ [ m1 BPS ] d SEC ] m2 BPS\n"
48 " m1 : slope of first segment\n"
49 " d : x-coordinate of intersection\n"
50 " m2 : slope of second segment\n"
52 "Alternative format:\n"
54 "SC := [ [ umax BYTE ] dmax SEC ] rate BPS\n"
56 " umax : maximum unit of work\n"
57 " dmax : maximum delay\n"
61 " - at least one of 'rt', 'ls' or 'sc' must be specified\n"
62 " - 'ul' can only be specified with 'ls' or 'sc'\n"
70 fprintf(stderr, "HFSC: Illegal \"%s\"\n", arg);
74 hfsc_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
76 struct tc_hfsc_qopt qopt;
78 memset(&qopt, 0, sizeof(qopt));
81 if (matches(*argv, "default") == 0) {
83 if (qopt.defcls != 0) {
84 fprintf(stderr, "HFSC: Double \"default\"\n");
87 if (get_u16(&qopt.defcls, *argv, 16) < 0) {
91 } else if (matches(*argv, "help") == 0) {
95 fprintf(stderr, "HFSC: What is \"%s\" ?\n", *argv);
102 addattr_l(n, 1024, TCA_OPTIONS, &qopt, sizeof(qopt));
107 hfsc_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
109 struct tc_hfsc_qopt *qopt;
113 if (RTA_PAYLOAD(opt) < sizeof(*qopt))
115 qopt = RTA_DATA(opt);
117 if (qopt->defcls != 0)
118 fprintf(f, "default %x ", qopt->defcls);
124 hfsc_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstats)
126 struct tc_hfsc_stats *st;
130 if (RTA_PAYLOAD(xstats) < sizeof(*st))
132 st = RTA_DATA(xstats);
134 fprintf(f, " period %u ", st->period);
136 fprintf(f, "work %llu bytes ", (unsigned long long) st->work);
138 fprintf(f, "rtwork %llu bytes ", (unsigned long long) st->rtwork);
139 fprintf(f, "level %u ", st->level);
146 hfsc_parse_class_opt(struct qdisc_util *qu, int argc, char **argv,
149 struct tc_service_curve rsc, fsc, usc;
150 int rsc_ok, fsc_ok, usc_ok;
153 memset(&rsc, 0, sizeof(rsc));
154 memset(&fsc, 0, sizeof(fsc));
155 memset(&usc, 0, sizeof(usc));
156 rsc_ok = fsc_ok = usc_ok = 0;
159 if (matches(*argv, "rt") == 0) {
161 if (hfsc_get_sc(&argc, &argv, &rsc) < 0) {
166 } else if (matches(*argv, "ls") == 0) {
168 if (hfsc_get_sc(&argc, &argv, &fsc) < 0) {
173 } else if (matches(*argv, "sc") == 0) {
175 if (hfsc_get_sc(&argc, &argv, &rsc) < 0) {
179 memcpy(&fsc, &rsc, sizeof(fsc));
182 } else if (matches(*argv, "ul") == 0) {
184 if (hfsc_get_sc(&argc, &argv, &usc) < 0) {
189 } else if (matches(*argv, "help") == 0) {
193 fprintf(stderr, "HFSC: What is \"%s\" ?\n", *argv);
200 if (!(rsc_ok || fsc_ok || usc_ok)) {
201 fprintf(stderr, "HFSC: no parameters given\n");
205 if (usc_ok && !fsc_ok) {
206 fprintf(stderr, "HFSC: Upper-limit Service Curve without "
207 "Link-Share Service Curve\n");
212 tail = NLMSG_TAIL(n);
214 addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
216 addattr_l(n, 1024, TCA_HFSC_RSC, &rsc, sizeof(rsc));
218 addattr_l(n, 1024, TCA_HFSC_FSC, &fsc, sizeof(fsc));
220 addattr_l(n, 1024, TCA_HFSC_USC, &usc, sizeof(usc));
222 tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
227 hfsc_print_sc(FILE *f, char *name, struct tc_service_curve *sc)
231 fprintf(f, "%s ", name);
232 fprintf(f, "m1 %s ", sprint_rate(sc->m1, b1));
233 fprintf(f, "d %s ", sprint_time(tc_core_ktime2time(sc->d), b1));
234 fprintf(f, "m2 %s ", sprint_rate(sc->m2, b1));
238 hfsc_print_class_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
240 struct rtattr *tb[TCA_HFSC_MAX+1];
241 struct tc_service_curve *rsc = NULL, *fsc = NULL, *usc = NULL;
246 parse_rtattr_nested(tb, TCA_HFSC_MAX, opt);
248 if (tb[TCA_HFSC_RSC]) {
249 if (RTA_PAYLOAD(tb[TCA_HFSC_RSC]) < sizeof(*rsc))
250 fprintf(stderr, "HFSC: truncated realtime option\n");
252 rsc = RTA_DATA(tb[TCA_HFSC_RSC]);
254 if (tb[TCA_HFSC_FSC]) {
255 if (RTA_PAYLOAD(tb[TCA_HFSC_FSC]) < sizeof(*fsc))
256 fprintf(stderr, "HFSC: truncated linkshare option\n");
258 fsc = RTA_DATA(tb[TCA_HFSC_FSC]);
260 if (tb[TCA_HFSC_USC]) {
261 if (RTA_PAYLOAD(tb[TCA_HFSC_USC]) < sizeof(*usc))
262 fprintf(stderr, "HFSC: truncated upperlimit option\n");
264 usc = RTA_DATA(tb[TCA_HFSC_USC]);
268 if (rsc != NULL && fsc != NULL &&
269 memcmp(rsc, fsc, sizeof(*rsc)) == 0)
270 hfsc_print_sc(f, "sc", rsc);
273 hfsc_print_sc(f, "rt", rsc);
275 hfsc_print_sc(f, "ls", fsc);
278 hfsc_print_sc(f, "ul", usc);
283 struct qdisc_util hfsc_qdisc_util = {
285 .parse_qopt = hfsc_parse_opt,
286 .print_qopt = hfsc_print_opt,
287 .print_xstats = hfsc_print_xstats,
288 .parse_copt = hfsc_parse_class_opt,
289 .print_copt = hfsc_print_class_opt,
293 hfsc_get_sc1(int *argcp, char ***argvp, struct tc_service_curve *sc)
295 char **argv = *argvp;
297 unsigned int m1 = 0, d = 0, m2 = 0;
299 if (matches(*argv, "m1") == 0) {
301 if (get_rate(&m1, *argv) < 0) {
308 if (matches(*argv, "d") == 0) {
310 if (get_time(&d, *argv) < 0) {
317 if (matches(*argv, "m2") == 0) {
319 if (get_rate(&m2, *argv) < 0) {
327 sc->d = tc_core_time2ktime(d);
336 hfsc_get_sc2(int *argcp, char ***argvp, struct tc_service_curve *sc)
338 char **argv = *argvp;
340 unsigned int umax = 0, dmax = 0, rate = 0;
342 if (matches(*argv, "umax") == 0) {
344 if (get_size(&umax, *argv) < 0) {
351 if (matches(*argv, "dmax") == 0) {
353 if (get_time(&dmax, *argv) < 0) {
360 if (matches(*argv, "rate") == 0) {
362 if (get_rate(&rate, *argv) < 0) {
369 if (umax != 0 && dmax == 0) {
370 fprintf(stderr, "HFSC: umax given but dmax is zero.\n");
374 if (dmax != 0 && ceil(1.0 * umax * TIME_UNITS_PER_SEC / dmax) > rate) {
376 * concave curve, slope of first segment is umax/dmax,
377 * intersection is at dmax
379 sc->m1 = ceil(1.0 * umax * TIME_UNITS_PER_SEC / dmax); /* in bps */
380 sc->d = tc_core_time2ktime(dmax);
384 * convex curve, slope of first segment is 0, intersection
385 * is at dmax - umax / rate
388 sc->d = tc_core_time2ktime(ceil(dmax - umax * TIME_UNITS_PER_SEC / rate));
398 hfsc_get_sc(int *argcp, char ***argvp, struct tc_service_curve *sc)
400 if (hfsc_get_sc1(argcp, argvp, sc) < 0 &&
401 hfsc_get_sc2(argcp, argvp, sc) < 0)
404 if (sc->m1 == 0 && sc->m2 == 0) {
405 fprintf(stderr, "HFSC: Service Curve has two zero slopes\n");