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");