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1da177e4 LT |
1 | #ifndef __LINUX_PKT_SCHED_H |
2 | #define __LINUX_PKT_SCHED_H | |
3 | ||
b8adfd3c JSR |
4 | #include <linux/types.h> |
5 | ||
1da177e4 LT |
6 | /* Logical priority bands not depending on specific packet scheduler. |
7 | Every scheduler will map them to real traffic classes, if it has | |
8 | no more precise mechanism to classify packets. | |
9 | ||
10 | These numbers have no special meaning, though their coincidence | |
11 | with obsolete IPv6 values is not occasional :-). New IPv6 drafts | |
12 | preferred full anarchy inspired by diffserv group. | |
13 | ||
14 | Note: TC_PRIO_BESTEFFORT does not mean that it is the most unhappy | |
15 | class, actually, as rule it will be handled with more care than | |
16 | filler or even bulk. | |
17 | */ | |
18 | ||
19 | #define TC_PRIO_BESTEFFORT 0 | |
20 | #define TC_PRIO_FILLER 1 | |
21 | #define TC_PRIO_BULK 2 | |
22 | #define TC_PRIO_INTERACTIVE_BULK 4 | |
23 | #define TC_PRIO_INTERACTIVE 6 | |
24 | #define TC_PRIO_CONTROL 7 | |
25 | ||
26 | #define TC_PRIO_MAX 15 | |
27 | ||
28 | /* Generic queue statistics, available for all the elements. | |
29 | Particular schedulers may have also their private records. | |
30 | */ | |
31 | ||
32 | struct tc_stats | |
33 | { | |
34 | __u64 bytes; /* NUmber of enqueues bytes */ | |
35 | __u32 packets; /* Number of enqueued packets */ | |
36 | __u32 drops; /* Packets dropped because of lack of resources */ | |
37 | __u32 overlimits; /* Number of throttle events when this | |
38 | * flow goes out of allocated bandwidth */ | |
39 | __u32 bps; /* Current flow byte rate */ | |
40 | __u32 pps; /* Current flow packet rate */ | |
41 | __u32 qlen; | |
42 | __u32 backlog; | |
43 | }; | |
44 | ||
45 | struct tc_estimator | |
46 | { | |
47 | signed char interval; | |
48 | unsigned char ewma_log; | |
49 | }; | |
50 | ||
51 | /* "Handles" | |
52 | --------- | |
53 | ||
54 | All the traffic control objects have 32bit identifiers, or "handles". | |
55 | ||
56 | They can be considered as opaque numbers from user API viewpoint, | |
57 | but actually they always consist of two fields: major and | |
58 | minor numbers, which are interpreted by kernel specially, | |
59 | that may be used by applications, though not recommended. | |
60 | ||
61 | F.e. qdisc handles always have minor number equal to zero, | |
62 | classes (or flows) have major equal to parent qdisc major, and | |
63 | minor uniquely identifying class inside qdisc. | |
64 | ||
65 | Macros to manipulate handles: | |
66 | */ | |
67 | ||
68 | #define TC_H_MAJ_MASK (0xFFFF0000U) | |
69 | #define TC_H_MIN_MASK (0x0000FFFFU) | |
70 | #define TC_H_MAJ(h) ((h)&TC_H_MAJ_MASK) | |
71 | #define TC_H_MIN(h) ((h)&TC_H_MIN_MASK) | |
72 | #define TC_H_MAKE(maj,min) (((maj)&TC_H_MAJ_MASK)|((min)&TC_H_MIN_MASK)) | |
73 | ||
74 | #define TC_H_UNSPEC (0U) | |
75 | #define TC_H_ROOT (0xFFFFFFFFU) | |
76 | #define TC_H_INGRESS (0xFFFFFFF1U) | |
77 | ||
78 | struct tc_ratespec | |
79 | { | |
80 | unsigned char cell_log; | |
81 | unsigned char __reserved; | |
e08b0998 JDB |
82 | unsigned short overhead; |
83 | short cell_align; | |
1da177e4 LT |
84 | unsigned short mpu; |
85 | __u32 rate; | |
86 | }; | |
87 | ||
5feb5e1a PM |
88 | #define TC_RTAB_SIZE 1024 |
89 | ||
175f9c1b JK |
90 | struct tc_sizespec { |
91 | unsigned char cell_log; | |
92 | unsigned char size_log; | |
93 | short cell_align; | |
94 | int overhead; | |
95 | unsigned int linklayer; | |
96 | unsigned int mpu; | |
97 | unsigned int mtu; | |
98 | unsigned int tsize; | |
99 | }; | |
100 | ||
101 | enum { | |
102 | TCA_STAB_UNSPEC, | |
103 | TCA_STAB_BASE, | |
104 | TCA_STAB_DATA, | |
105 | __TCA_STAB_MAX | |
106 | }; | |
107 | ||
108 | #define TCA_STAB_MAX (__TCA_STAB_MAX - 1) | |
109 | ||
1da177e4 LT |
110 | /* FIFO section */ |
111 | ||
112 | struct tc_fifo_qopt | |
113 | { | |
114 | __u32 limit; /* Queue length: bytes for bfifo, packets for pfifo */ | |
115 | }; | |
116 | ||
117 | /* PRIO section */ | |
118 | ||
119 | #define TCQ_PRIO_BANDS 16 | |
bdc450a0 | 120 | #define TCQ_MIN_PRIO_BANDS 2 |
1da177e4 LT |
121 | |
122 | struct tc_prio_qopt | |
123 | { | |
124 | int bands; /* Number of bands */ | |
125 | __u8 priomap[TC_PRIO_MAX+1]; /* Map: logical priority -> PRIO band */ | |
126 | }; | |
127 | ||
92651940 AD |
128 | /* MULTIQ section */ |
129 | ||
130 | struct tc_multiq_qopt { | |
131 | __u16 bands; /* Number of bands */ | |
132 | __u16 max_bands; /* Maximum number of queues */ | |
133 | }; | |
134 | ||
1da177e4 LT |
135 | /* TBF section */ |
136 | ||
137 | struct tc_tbf_qopt | |
138 | { | |
139 | struct tc_ratespec rate; | |
140 | struct tc_ratespec peakrate; | |
141 | __u32 limit; | |
142 | __u32 buffer; | |
143 | __u32 mtu; | |
144 | }; | |
145 | ||
146 | enum | |
147 | { | |
148 | TCA_TBF_UNSPEC, | |
149 | TCA_TBF_PARMS, | |
150 | TCA_TBF_RTAB, | |
151 | TCA_TBF_PTAB, | |
152 | __TCA_TBF_MAX, | |
153 | }; | |
154 | ||
155 | #define TCA_TBF_MAX (__TCA_TBF_MAX - 1) | |
156 | ||
157 | ||
158 | /* TEQL section */ | |
159 | ||
160 | /* TEQL does not require any parameters */ | |
161 | ||
162 | /* SFQ section */ | |
163 | ||
164 | struct tc_sfq_qopt | |
165 | { | |
166 | unsigned quantum; /* Bytes per round allocated to flow */ | |
167 | int perturb_period; /* Period of hash perturbation */ | |
168 | __u32 limit; /* Maximal packets in queue */ | |
169 | unsigned divisor; /* Hash divisor */ | |
170 | unsigned flows; /* Maximal number of flows */ | |
171 | }; | |
172 | ||
94de78d1 PM |
173 | struct tc_sfq_xstats |
174 | { | |
175 | __s32 allot; | |
176 | }; | |
177 | ||
1da177e4 LT |
178 | /* |
179 | * NOTE: limit, divisor and flows are hardwired to code at the moment. | |
180 | * | |
181 | * limit=flows=128, divisor=1024; | |
182 | * | |
183 | * The only reason for this is efficiency, it is possible | |
184 | * to change these parameters in compile time. | |
185 | */ | |
186 | ||
187 | /* RED section */ | |
188 | ||
189 | enum | |
190 | { | |
191 | TCA_RED_UNSPEC, | |
192 | TCA_RED_PARMS, | |
193 | TCA_RED_STAB, | |
194 | __TCA_RED_MAX, | |
195 | }; | |
196 | ||
197 | #define TCA_RED_MAX (__TCA_RED_MAX - 1) | |
198 | ||
199 | struct tc_red_qopt | |
200 | { | |
201 | __u32 limit; /* HARD maximal queue length (bytes) */ | |
202 | __u32 qth_min; /* Min average length threshold (bytes) */ | |
203 | __u32 qth_max; /* Max average length threshold (bytes) */ | |
204 | unsigned char Wlog; /* log(W) */ | |
205 | unsigned char Plog; /* log(P_max/(qth_max-qth_min)) */ | |
206 | unsigned char Scell_log; /* cell size for idle damping */ | |
207 | unsigned char flags; | |
208 | #define TC_RED_ECN 1 | |
bdc450a0 | 209 | #define TC_RED_HARDDROP 2 |
1da177e4 LT |
210 | }; |
211 | ||
212 | struct tc_red_xstats | |
213 | { | |
214 | __u32 early; /* Early drops */ | |
215 | __u32 pdrop; /* Drops due to queue limits */ | |
216 | __u32 other; /* Drops due to drop() calls */ | |
217 | __u32 marked; /* Marked packets */ | |
218 | }; | |
219 | ||
220 | /* GRED section */ | |
221 | ||
222 | #define MAX_DPs 16 | |
223 | ||
224 | enum | |
225 | { | |
226 | TCA_GRED_UNSPEC, | |
227 | TCA_GRED_PARMS, | |
228 | TCA_GRED_STAB, | |
229 | TCA_GRED_DPS, | |
230 | __TCA_GRED_MAX, | |
231 | }; | |
232 | ||
233 | #define TCA_GRED_MAX (__TCA_GRED_MAX - 1) | |
234 | ||
1da177e4 LT |
235 | struct tc_gred_qopt |
236 | { | |
1e4dfaf9 TG |
237 | __u32 limit; /* HARD maximal queue length (bytes) */ |
238 | __u32 qth_min; /* Min average length threshold (bytes) */ | |
239 | __u32 qth_max; /* Max average length threshold (bytes) */ | |
240 | __u32 DP; /* upto 2^32 DPs */ | |
241 | __u32 backlog; | |
242 | __u32 qave; | |
243 | __u32 forced; | |
244 | __u32 early; | |
245 | __u32 other; | |
246 | __u32 pdrop; | |
247 | __u8 Wlog; /* log(W) */ | |
248 | __u8 Plog; /* log(P_max/(qth_max-qth_min)) */ | |
249 | __u8 Scell_log; /* cell size for idle damping */ | |
250 | __u8 prio; /* prio of this VQ */ | |
251 | __u32 packets; | |
252 | __u32 bytesin; | |
1da177e4 | 253 | }; |
1e4dfaf9 | 254 | |
1da177e4 LT |
255 | /* gred setup */ |
256 | struct tc_gred_sopt | |
257 | { | |
1e4dfaf9 TG |
258 | __u32 DPs; |
259 | __u32 def_DP; | |
260 | __u8 grio; | |
b38c7eef TG |
261 | __u8 flags; |
262 | __u16 pad1; | |
1da177e4 LT |
263 | }; |
264 | ||
265 | /* HTB section */ | |
266 | #define TC_HTB_NUMPRIO 8 | |
267 | #define TC_HTB_MAXDEPTH 8 | |
268 | #define TC_HTB_PROTOVER 3 /* the same as HTB and TC's major */ | |
269 | ||
270 | struct tc_htb_opt | |
271 | { | |
272 | struct tc_ratespec rate; | |
273 | struct tc_ratespec ceil; | |
274 | __u32 buffer; | |
275 | __u32 cbuffer; | |
276 | __u32 quantum; | |
277 | __u32 level; /* out only */ | |
278 | __u32 prio; | |
279 | }; | |
280 | struct tc_htb_glob | |
281 | { | |
282 | __u32 version; /* to match HTB/TC */ | |
283 | __u32 rate2quantum; /* bps->quantum divisor */ | |
284 | __u32 defcls; /* default class number */ | |
285 | __u32 debug; /* debug flags */ | |
286 | ||
287 | /* stats */ | |
288 | __u32 direct_pkts; /* count of non shapped packets */ | |
289 | }; | |
290 | enum | |
291 | { | |
292 | TCA_HTB_UNSPEC, | |
293 | TCA_HTB_PARMS, | |
294 | TCA_HTB_INIT, | |
295 | TCA_HTB_CTAB, | |
296 | TCA_HTB_RTAB, | |
297 | __TCA_HTB_MAX, | |
298 | }; | |
299 | ||
300 | #define TCA_HTB_MAX (__TCA_HTB_MAX - 1) | |
301 | ||
302 | struct tc_htb_xstats | |
303 | { | |
304 | __u32 lends; | |
305 | __u32 borrows; | |
306 | __u32 giants; /* too big packets (rate will not be accurate) */ | |
307 | __u32 tokens; | |
308 | __u32 ctokens; | |
309 | }; | |
310 | ||
311 | /* HFSC section */ | |
312 | ||
313 | struct tc_hfsc_qopt | |
314 | { | |
315 | __u16 defcls; /* default class */ | |
316 | }; | |
317 | ||
318 | struct tc_service_curve | |
319 | { | |
320 | __u32 m1; /* slope of the first segment in bps */ | |
321 | __u32 d; /* x-projection of the first segment in us */ | |
322 | __u32 m2; /* slope of the second segment in bps */ | |
323 | }; | |
324 | ||
325 | struct tc_hfsc_stats | |
326 | { | |
327 | __u64 work; /* total work done */ | |
328 | __u64 rtwork; /* work done by real-time criteria */ | |
329 | __u32 period; /* current period */ | |
330 | __u32 level; /* class level in hierarchy */ | |
331 | }; | |
332 | ||
333 | enum | |
334 | { | |
335 | TCA_HFSC_UNSPEC, | |
336 | TCA_HFSC_RSC, | |
337 | TCA_HFSC_FSC, | |
338 | TCA_HFSC_USC, | |
339 | __TCA_HFSC_MAX, | |
340 | }; | |
341 | ||
342 | #define TCA_HFSC_MAX (__TCA_HFSC_MAX - 1) | |
343 | ||
344 | ||
345 | /* CBQ section */ | |
346 | ||
347 | #define TC_CBQ_MAXPRIO 8 | |
348 | #define TC_CBQ_MAXLEVEL 8 | |
349 | #define TC_CBQ_DEF_EWMA 5 | |
350 | ||
351 | struct tc_cbq_lssopt | |
352 | { | |
353 | unsigned char change; | |
354 | unsigned char flags; | |
355 | #define TCF_CBQ_LSS_BOUNDED 1 | |
356 | #define TCF_CBQ_LSS_ISOLATED 2 | |
357 | unsigned char ewma_log; | |
358 | unsigned char level; | |
359 | #define TCF_CBQ_LSS_FLAGS 1 | |
360 | #define TCF_CBQ_LSS_EWMA 2 | |
361 | #define TCF_CBQ_LSS_MAXIDLE 4 | |
362 | #define TCF_CBQ_LSS_MINIDLE 8 | |
363 | #define TCF_CBQ_LSS_OFFTIME 0x10 | |
364 | #define TCF_CBQ_LSS_AVPKT 0x20 | |
365 | __u32 maxidle; | |
366 | __u32 minidle; | |
367 | __u32 offtime; | |
368 | __u32 avpkt; | |
369 | }; | |
370 | ||
371 | struct tc_cbq_wrropt | |
372 | { | |
373 | unsigned char flags; | |
374 | unsigned char priority; | |
375 | unsigned char cpriority; | |
376 | unsigned char __reserved; | |
377 | __u32 allot; | |
378 | __u32 weight; | |
379 | }; | |
380 | ||
381 | struct tc_cbq_ovl | |
382 | { | |
383 | unsigned char strategy; | |
384 | #define TC_CBQ_OVL_CLASSIC 0 | |
385 | #define TC_CBQ_OVL_DELAY 1 | |
386 | #define TC_CBQ_OVL_LOWPRIO 2 | |
387 | #define TC_CBQ_OVL_DROP 3 | |
388 | #define TC_CBQ_OVL_RCLASSIC 4 | |
389 | unsigned char priority2; | |
8a47077a | 390 | __u16 pad; |
1da177e4 LT |
391 | __u32 penalty; |
392 | }; | |
393 | ||
394 | struct tc_cbq_police | |
395 | { | |
396 | unsigned char police; | |
397 | unsigned char __res1; | |
398 | unsigned short __res2; | |
399 | }; | |
400 | ||
401 | struct tc_cbq_fopt | |
402 | { | |
403 | __u32 split; | |
404 | __u32 defmap; | |
405 | __u32 defchange; | |
406 | }; | |
407 | ||
408 | struct tc_cbq_xstats | |
409 | { | |
410 | __u32 borrows; | |
411 | __u32 overactions; | |
412 | __s32 avgidle; | |
413 | __s32 undertime; | |
414 | }; | |
415 | ||
416 | enum | |
417 | { | |
418 | TCA_CBQ_UNSPEC, | |
419 | TCA_CBQ_LSSOPT, | |
420 | TCA_CBQ_WRROPT, | |
421 | TCA_CBQ_FOPT, | |
422 | TCA_CBQ_OVL_STRATEGY, | |
423 | TCA_CBQ_RATE, | |
424 | TCA_CBQ_RTAB, | |
425 | TCA_CBQ_POLICE, | |
426 | __TCA_CBQ_MAX, | |
427 | }; | |
428 | ||
429 | #define TCA_CBQ_MAX (__TCA_CBQ_MAX - 1) | |
430 | ||
431 | /* dsmark section */ | |
432 | ||
433 | enum { | |
434 | TCA_DSMARK_UNSPEC, | |
435 | TCA_DSMARK_INDICES, | |
436 | TCA_DSMARK_DEFAULT_INDEX, | |
437 | TCA_DSMARK_SET_TC_INDEX, | |
438 | TCA_DSMARK_MASK, | |
439 | TCA_DSMARK_VALUE, | |
440 | __TCA_DSMARK_MAX, | |
441 | }; | |
442 | ||
443 | #define TCA_DSMARK_MAX (__TCA_DSMARK_MAX - 1) | |
444 | ||
445 | /* ATM section */ | |
446 | ||
447 | enum { | |
448 | TCA_ATM_UNSPEC, | |
449 | TCA_ATM_FD, /* file/socket descriptor */ | |
450 | TCA_ATM_PTR, /* pointer to descriptor - later */ | |
451 | TCA_ATM_HDR, /* LL header */ | |
452 | TCA_ATM_EXCESS, /* excess traffic class (0 for CLP) */ | |
453 | TCA_ATM_ADDR, /* PVC address (for output only) */ | |
454 | TCA_ATM_STATE, /* VC state (ATM_VS_*; for output only) */ | |
455 | __TCA_ATM_MAX, | |
456 | }; | |
457 | ||
458 | #define TCA_ATM_MAX (__TCA_ATM_MAX - 1) | |
459 | ||
460 | /* Network emulator */ | |
461 | ||
462 | enum | |
463 | { | |
464 | TCA_NETEM_UNSPEC, | |
465 | TCA_NETEM_CORR, | |
466 | TCA_NETEM_DELAY_DIST, | |
0dca51d3 | 467 | TCA_NETEM_REORDER, |
c865e5d9 | 468 | TCA_NETEM_CORRUPT, |
1da177e4 LT |
469 | __TCA_NETEM_MAX, |
470 | }; | |
471 | ||
472 | #define TCA_NETEM_MAX (__TCA_NETEM_MAX - 1) | |
473 | ||
474 | struct tc_netem_qopt | |
475 | { | |
476 | __u32 latency; /* added delay (us) */ | |
477 | __u32 limit; /* fifo limit (packets) */ | |
478 | __u32 loss; /* random packet loss (0=none ~0=100%) */ | |
0dca51d3 | 479 | __u32 gap; /* re-ordering gap (0 for none) */ |
1da177e4 LT |
480 | __u32 duplicate; /* random packet dup (0=none ~0=100%) */ |
481 | __u32 jitter; /* random jitter in latency (us) */ | |
482 | }; | |
483 | ||
484 | struct tc_netem_corr | |
485 | { | |
486 | __u32 delay_corr; /* delay correlation */ | |
487 | __u32 loss_corr; /* packet loss correlation */ | |
488 | __u32 dup_corr; /* duplicate correlation */ | |
489 | }; | |
490 | ||
0dca51d3 SH |
491 | struct tc_netem_reorder |
492 | { | |
493 | __u32 probability; | |
494 | __u32 correlation; | |
495 | }; | |
496 | ||
c865e5d9 SH |
497 | struct tc_netem_corrupt |
498 | { | |
499 | __u32 probability; | |
500 | __u32 correlation; | |
501 | }; | |
502 | ||
1da177e4 LT |
503 | #define NETEM_DIST_SCALE 8192 |
504 | ||
13d2a1d2 PM |
505 | /* DRR */ |
506 | ||
507 | enum | |
508 | { | |
509 | TCA_DRR_UNSPEC, | |
510 | TCA_DRR_QUANTUM, | |
511 | __TCA_DRR_MAX | |
512 | }; | |
513 | ||
514 | #define TCA_DRR_MAX (__TCA_DRR_MAX - 1) | |
515 | ||
516 | struct tc_drr_stats | |
517 | { | |
e672f7db | 518 | __u32 deficit; |
13d2a1d2 PM |
519 | }; |
520 | ||
1da177e4 | 521 | #endif |