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>
17 #include <sys/socket.h>
18 #include <netinet/in.h>
19 #include <arpa/inet.h>
26 static int hfsc_get_sc(int *, char ***, struct tc_service_curve
*);
33 "Usage: ... hfsc [ default CLASSID ]\n"
35 " default: default class for unclassified packets\n"
43 "Usage: ... hfsc [ [ rt SC ] [ ls SC ] | [ sc SC ] ] [ ul SC ]\n"
45 "SC := [ [ m1 BPS ] d SEC ] m2 BPS\n"
47 " m1 : slope of first segment\n"
48 " d : x-coordinate of intersection\n"
49 " m2 : slope of second segment\n"
51 "Alternative format:\n"
53 "SC := [ [ umax BYTE ] dmax SEC ] rate BPS\n"
55 " umax : maximum unit of work\n"
56 " dmax : maximum delay\n"
60 " - at least one of 'rt', 'ls' or 'sc' must be specified\n"
61 " - 'ul' can only be specified with 'ls' or 'sc'\n"
69 fprintf(stderr
, "HFSC: Illegal \"%s\"\n", arg
);
73 hfsc_parse_opt(struct qdisc_util
*qu
, int argc
, char **argv
, struct nlmsghdr
*n
)
75 struct tc_hfsc_qopt qopt
= {};
78 if (matches(*argv
, "default") == 0) {
80 if (qopt
.defcls
!= 0) {
81 fprintf(stderr
, "HFSC: Double \"default\"\n");
84 if (get_u16(&qopt
.defcls
, *argv
, 16) < 0) {
88 } else if (matches(*argv
, "help") == 0) {
92 fprintf(stderr
, "HFSC: What is \"%s\" ?\n", *argv
);
99 addattr_l(n
, 1024, TCA_OPTIONS
, &qopt
, sizeof(qopt
));
104 hfsc_print_opt(struct qdisc_util
*qu
, FILE *f
, struct rtattr
*opt
)
106 struct tc_hfsc_qopt
*qopt
;
110 if (RTA_PAYLOAD(opt
) < sizeof(*qopt
))
112 qopt
= RTA_DATA(opt
);
114 if (qopt
->defcls
!= 0)
115 fprintf(f
, "default %x ", qopt
->defcls
);
121 hfsc_print_xstats(struct qdisc_util
*qu
, FILE *f
, struct rtattr
*xstats
)
123 struct tc_hfsc_stats
*st
;
127 if (RTA_PAYLOAD(xstats
) < sizeof(*st
))
129 st
= RTA_DATA(xstats
);
131 fprintf(f
, " period %u ", st
->period
);
133 fprintf(f
, "work %llu bytes ", (unsigned long long) st
->work
);
135 fprintf(f
, "rtwork %llu bytes ", (unsigned long long) st
->rtwork
);
136 fprintf(f
, "level %u ", st
->level
);
143 hfsc_parse_class_opt(struct qdisc_util
*qu
, int argc
, char **argv
,
146 struct tc_service_curve rsc
= {}, fsc
= {}, usc
= {};
147 int rsc_ok
= 0, fsc_ok
= 0, usc_ok
= 0;
151 if (matches(*argv
, "rt") == 0) {
153 if (hfsc_get_sc(&argc
, &argv
, &rsc
) < 0) {
158 } else if (matches(*argv
, "ls") == 0) {
160 if (hfsc_get_sc(&argc
, &argv
, &fsc
) < 0) {
165 } else if (matches(*argv
, "sc") == 0) {
167 if (hfsc_get_sc(&argc
, &argv
, &rsc
) < 0) {
171 memcpy(&fsc
, &rsc
, sizeof(fsc
));
174 } else if (matches(*argv
, "ul") == 0) {
176 if (hfsc_get_sc(&argc
, &argv
, &usc
) < 0) {
181 } else if (matches(*argv
, "help") == 0) {
185 fprintf(stderr
, "HFSC: What is \"%s\" ?\n", *argv
);
192 if (!(rsc_ok
|| fsc_ok
|| usc_ok
)) {
193 fprintf(stderr
, "HFSC: no parameters given\n");
197 if (usc_ok
&& !fsc_ok
) {
198 fprintf(stderr
, "HFSC: Upper-limit Service Curve without Link-Share Service Curve\n");
203 tail
= NLMSG_TAIL(n
);
205 addattr_l(n
, 1024, TCA_OPTIONS
, NULL
, 0);
207 addattr_l(n
, 1024, TCA_HFSC_RSC
, &rsc
, sizeof(rsc
));
209 addattr_l(n
, 1024, TCA_HFSC_FSC
, &fsc
, sizeof(fsc
));
211 addattr_l(n
, 1024, TCA_HFSC_USC
, &usc
, sizeof(usc
));
213 tail
->rta_len
= (void *) NLMSG_TAIL(n
) - (void *) tail
;
218 hfsc_print_sc(FILE *f
, char *name
, struct tc_service_curve
*sc
)
222 fprintf(f
, "%s ", name
);
223 fprintf(f
, "m1 %s ", sprint_rate(sc
->m1
, b1
));
224 fprintf(f
, "d %s ", sprint_time(tc_core_ktime2time(sc
->d
), b1
));
225 fprintf(f
, "m2 %s ", sprint_rate(sc
->m2
, b1
));
229 hfsc_print_class_opt(struct qdisc_util
*qu
, FILE *f
, struct rtattr
*opt
)
231 struct rtattr
*tb
[TCA_HFSC_MAX
+1];
232 struct tc_service_curve
*rsc
= NULL
, *fsc
= NULL
, *usc
= NULL
;
237 parse_rtattr_nested(tb
, TCA_HFSC_MAX
, opt
);
239 if (tb
[TCA_HFSC_RSC
]) {
240 if (RTA_PAYLOAD(tb
[TCA_HFSC_RSC
]) < sizeof(*rsc
))
241 fprintf(stderr
, "HFSC: truncated realtime option\n");
243 rsc
= RTA_DATA(tb
[TCA_HFSC_RSC
]);
245 if (tb
[TCA_HFSC_FSC
]) {
246 if (RTA_PAYLOAD(tb
[TCA_HFSC_FSC
]) < sizeof(*fsc
))
247 fprintf(stderr
, "HFSC: truncated linkshare option\n");
249 fsc
= RTA_DATA(tb
[TCA_HFSC_FSC
]);
251 if (tb
[TCA_HFSC_USC
]) {
252 if (RTA_PAYLOAD(tb
[TCA_HFSC_USC
]) < sizeof(*usc
))
253 fprintf(stderr
, "HFSC: truncated upperlimit option\n");
255 usc
= RTA_DATA(tb
[TCA_HFSC_USC
]);
259 if (rsc
!= NULL
&& fsc
!= NULL
&&
260 memcmp(rsc
, fsc
, sizeof(*rsc
)) == 0)
261 hfsc_print_sc(f
, "sc", rsc
);
264 hfsc_print_sc(f
, "rt", rsc
);
266 hfsc_print_sc(f
, "ls", fsc
);
269 hfsc_print_sc(f
, "ul", usc
);
274 struct qdisc_util hfsc_qdisc_util
= {
276 .parse_qopt
= hfsc_parse_opt
,
277 .print_qopt
= hfsc_print_opt
,
278 .print_xstats
= hfsc_print_xstats
,
279 .parse_copt
= hfsc_parse_class_opt
,
280 .print_copt
= hfsc_print_class_opt
,
284 hfsc_get_sc1(int *argcp
, char ***argvp
, struct tc_service_curve
*sc
)
286 char **argv
= *argvp
;
288 unsigned int m1
= 0, d
= 0, m2
= 0;
290 if (matches(*argv
, "m1") == 0) {
292 if (get_rate(&m1
, *argv
) < 0) {
299 if (matches(*argv
, "d") == 0) {
301 if (get_time(&d
, *argv
) < 0) {
308 if (matches(*argv
, "m2") == 0) {
310 if (get_rate(&m2
, *argv
) < 0) {
318 sc
->d
= tc_core_time2ktime(d
);
327 hfsc_get_sc2(int *argcp
, char ***argvp
, struct tc_service_curve
*sc
)
329 char **argv
= *argvp
;
331 unsigned int umax
= 0, dmax
= 0, rate
= 0;
333 if (matches(*argv
, "umax") == 0) {
335 if (get_size(&umax
, *argv
) < 0) {
342 if (matches(*argv
, "dmax") == 0) {
344 if (get_time(&dmax
, *argv
) < 0) {
351 if (matches(*argv
, "rate") == 0) {
353 if (get_rate(&rate
, *argv
) < 0) {
360 if (umax
!= 0 && dmax
== 0) {
361 fprintf(stderr
, "HFSC: umax given but dmax is zero.\n");
365 if (dmax
!= 0 && ceil(1.0 * umax
* TIME_UNITS_PER_SEC
/ dmax
) > rate
) {
367 * concave curve, slope of first segment is umax/dmax,
368 * intersection is at dmax
370 sc
->m1
= ceil(1.0 * umax
* TIME_UNITS_PER_SEC
/ dmax
); /* in bps */
371 sc
->d
= tc_core_time2ktime(dmax
);
375 * convex curve, slope of first segment is 0, intersection
376 * is at dmax - umax / rate
379 sc
->d
= tc_core_time2ktime(ceil(dmax
- umax
* TIME_UNITS_PER_SEC
/ rate
));
389 hfsc_get_sc(int *argcp
, char ***argvp
, struct tc_service_curve
*sc
)
391 if (hfsc_get_sc1(argcp
, argvp
, sc
) < 0 &&
392 hfsc_get_sc2(argcp
, argvp
, sc
) < 0)
395 if (sc
->m1
== 0 && sc
->m2
== 0) {
396 fprintf(stderr
, "HFSC: Service Curve has two zero slopes\n");