Lines Matching defs:*
0 #ifndef __LINUX_PKT_SCHED_H
2 #define __LINUX_PKT_SCHED_H
4 /* Logical priority bands not depending on specific packet scheduler.
5 Every scheduler will map them to real traffic classes, if it has
6 no more precise mechanism to classify packets.
8 These numbers have no special meaning, though their coincidence
9 with obsolete IPv6 values is not occasional :-). New IPv6 drafts
10 preferred full anarchy inspired by diffserv group.
12 Note: TC_PRIO_BESTEFFORT does not mean that it is the most unhappy
13 class, actually, as rule it will be handled with more care than
14 filler or even bulk.
17 #define TC_PRIO_BESTEFFORT 0
18 #define TC_PRIO_FILLER 1
19 #define TC_PRIO_BULK 2
20 #define TC_PRIO_INTERACTIVE_BULK 4
21 #define TC_PRIO_INTERACTIVE 6
22 #define TC_PRIO_CONTROL 7
24 #define TC_PRIO_MAX 15
26 /* Generic queue statistics, available for all the elements.
27 Particular schedulers may have also their private records.
30 struct tc_stats
32 __u64 bytes; /* NUmber of enqueues bytes */
33 __u32 packets; /* Number of enqueued packets */
34 __u32 drops; /* Packets dropped because of lack of resources */
35 __u32 overlimits; /* Number of throttle events when this
36 * flow goes out of allocated bandwidth */
37 __u32 bps; /* Current flow byte rate */
38 __u32 pps; /* Current flow packet rate */
39 __u32 qlen;
40 __u32 backlog;
43 struct tc_estimator
45 signed char interval;
46 unsigned char ewma_log;
49 /* "Handles"
50 ---------
52 All the traffic control objects have 32bit identifiers, or "handles".
54 They can be considered as opaque numbers from user API viewpoint,
55 but actually they always consist of two fields: major and
56 minor numbers, which are interpreted by kernel specially,
57 that may be used by applications, though not recommended.
59 F.e. qdisc handles always have minor number equal to zero,
60 classes (or flows) have major equal to parent qdisc major, and
61 minor uniquely identifying class inside qdisc.
63 Macros to manipulate handles:
66 #define TC_H_MAJ_MASK (0xFFFF0000U)
67 #define TC_H_MIN_MASK (0x0000FFFFU)
68 #define TC_H_MAJ(h) ((h)&TC_H_MAJ_MASK)
69 #define TC_H_MIN(h) ((h)&TC_H_MIN_MASK)
70 #define TC_H_MAKE(maj,min) (((maj)&TC_H_MAJ_MASK)|((min)&TC_H_MIN_MASK))
72 #define TC_H_UNSPEC (0U)
73 #define TC_H_ROOT (0xFFFFFFFFU)
74 #define TC_H_INGRESS (0xFFFFFFF1U)
76 struct tc_ratespec
78 unsigned char cell_log;
79 unsigned char __reserved;
80 unsigned short feature;
81 short addend;
82 unsigned short mpu;
83 __u32 rate;
86 /* FIFO section */
88 struct tc_fifo_qopt
90 __u32 limit; /* Queue length: bytes for bfifo, packets for pfifo */
93 /* PRIO section */
95 #define TCQ_PRIO_BANDS 16
97 struct tc_prio_qopt
99 int bands; /* Number of bands */
100 __u8 priomap[TC_PRIO_MAX+1]; /* Map: logical priority -> PRIO band */
103 /* TBF section */
105 struct tc_tbf_qopt
107 struct tc_ratespec rate;
108 struct tc_ratespec peakrate;
109 __u32 limit;
110 __u32 buffer;
111 __u32 mtu;
114 enum
116 TCA_TBF_UNSPEC,
117 TCA_TBF_PARMS,
118 TCA_TBF_RTAB,
119 TCA_TBF_PTAB,
120 __TCA_TBF_MAX,
123 #define TCA_TBF_MAX (__TCA_TBF_MAX - 1)
126 /* TEQL section */
128 /* TEQL does not require any parameters */
130 /* SFQ section */
132 struct tc_sfq_qopt
134 unsigned quantum; /* Bytes per round allocated to flow */
135 int perturb_period; /* Period of hash perturbation */
136 __u32 limit; /* Maximal packets in queue */
137 unsigned divisor; /* Hash divisor */
138 unsigned flows; /* Maximal number of flows */
142 * NOTE: limit, divisor and flows are hardwired to code at the moment.
144 * limit=flows=128, divisor=1024;
146 * The only reason for this is efficiency, it is possible
147 * to change these parameters in compile time.
150 /* RED section */
152 enum
154 TCA_RED_UNSPEC,
155 TCA_RED_PARMS,
156 TCA_RED_STAB,
157 __TCA_RED_MAX,
160 #define TCA_RED_MAX (__TCA_RED_MAX - 1)
162 struct tc_red_qopt
164 __u32 limit; /* HARD maximal queue length (bytes) */
165 __u32 qth_min; /* Min average length threshold (bytes) */
166 __u32 qth_max; /* Max average length threshold (bytes) */
167 unsigned char Wlog; /* log(W) */
168 unsigned char Plog; /* log(P_max/(qth_max-qth_min)) */
169 unsigned char Scell_log; /* cell size for idle damping */
170 unsigned char flags;
171 #define TC_RED_ECN 1
174 struct tc_red_xstats
176 __u32 early; /* Early drops */
177 __u32 pdrop; /* Drops due to queue limits */
178 __u32 other; /* Drops due to drop() calls */
179 __u32 marked; /* Marked packets */
182 /* GRED section */
184 #define MAX_DPs 16
186 enum
188 TCA_GRED_UNSPEC,
189 TCA_GRED_PARMS,
190 TCA_GRED_STAB,
191 TCA_GRED_DPS,
192 __TCA_GRED_MAX,
195 #define TCA_GRED_MAX (__TCA_GRED_MAX - 1)
197 #define TCA_SET_OFF TCA_GRED_PARMS
198 struct tc_gred_qopt
200 __u32 limit; /* HARD maximal queue length (bytes)
202 __u32 qth_min; /* Min average length threshold (bytes)
204 __u32 qth_max; /* Max average length threshold (bytes)
206 __u32 DP; /* upto 2^32 DPs */
207 __u32 backlog;
208 __u32 qave;
209 __u32 forced;
210 __u32 early;
211 __u32 other;
212 __u32 pdrop;
214 unsigned char Wlog; /* log(W) */
215 unsigned char Plog; /* log(P_max/(qth_max-qth_min)) */
216 unsigned char Scell_log; /* cell size for idle damping */
217 __u8 prio; /* prio of this VQ */
218 __u32 packets;
219 __u32 bytesin;
221 /* gred setup */
222 struct tc_gred_sopt
224 __u32 DPs;
225 __u32 def_DP;
226 __u8 grio;
227 __u8 pad1;
228 __u16 pad2;
231 /* HTB section */
232 #define TC_HTB_NUMPRIO 8
233 #define TC_HTB_MAXDEPTH 8
234 #define TC_HTB_PROTOVER 3 /* the same as HTB and TC's major */
236 struct tc_htb_opt
238 struct tc_ratespec rate;
239 struct tc_ratespec ceil;
240 __u32 buffer;
241 __u32 cbuffer;
242 __u32 quantum;
243 __u32 level; /* out only */
244 __u32 prio;
246 struct tc_htb_glob
248 __u32 version; /* to match HTB/TC */
249 __u32 rate2quantum; /* bps->quantum divisor */
250 __u32 defcls; /* default class number */
251 __u32 debug; /* debug flags */
253 /* stats */
254 __u32 direct_pkts; /* count of non shapped packets */
256 enum
258 TCA_HTB_UNSPEC,
259 TCA_HTB_PARMS,
260 TCA_HTB_INIT,
261 TCA_HTB_CTAB,
262 TCA_HTB_RTAB,
263 __TCA_HTB_MAX,
266 #define TCA_HTB_MAX (__TCA_HTB_MAX - 1)
268 struct tc_htb_xstats
270 __u32 lends;
271 __u32 borrows;
272 __u32 giants; /* too big packets (rate will not be accurate) */
273 __u32 tokens;
274 __u32 ctokens;
277 /* HFSC section */
279 struct tc_hfsc_qopt
281 __u16 defcls; /* default class */
284 struct tc_service_curve
286 __u32 m1; /* slope of the first segment in bps */
287 __u32 d; /* x-projection of the first segment in us */
288 __u32 m2; /* slope of the second segment in bps */
291 struct tc_hfsc_stats
293 __u64 work; /* total work done */
294 __u64 rtwork; /* work done by real-time criteria */
295 __u32 period; /* current period */
296 __u32 level; /* class level in hierarchy */
299 enum
301 TCA_HFSC_UNSPEC,
302 TCA_HFSC_RSC,
303 TCA_HFSC_FSC,
304 TCA_HFSC_USC,
305 __TCA_HFSC_MAX,
308 #define TCA_HFSC_MAX (__TCA_HFSC_MAX - 1)
311 /* CBQ section */
313 #define TC_CBQ_MAXPRIO 8
314 #define TC_CBQ_MAXLEVEL 8
315 #define TC_CBQ_DEF_EWMA 5
317 struct tc_cbq_lssopt
319 unsigned char change;
320 unsigned char flags;
321 #define TCF_CBQ_LSS_BOUNDED 1
322 #define TCF_CBQ_LSS_ISOLATED 2
323 unsigned char ewma_log;
324 unsigned char level;
325 #define TCF_CBQ_LSS_FLAGS 1
326 #define TCF_CBQ_LSS_EWMA 2
327 #define TCF_CBQ_LSS_MAXIDLE 4
328 #define TCF_CBQ_LSS_MINIDLE 8
329 #define TCF_CBQ_LSS_OFFTIME 0x10
330 #define TCF_CBQ_LSS_AVPKT 0x20
331 __u32 maxidle;
332 __u32 minidle;
333 __u32 offtime;
334 __u32 avpkt;
337 struct tc_cbq_wrropt
339 unsigned char flags;
340 unsigned char priority;
341 unsigned char cpriority;
342 unsigned char __reserved;
343 __u32 allot;
344 __u32 weight;
347 struct tc_cbq_ovl
349 unsigned char strategy;
350 #define TC_CBQ_OVL_CLASSIC 0
351 #define TC_CBQ_OVL_DELAY 1
352 #define TC_CBQ_OVL_LOWPRIO 2
353 #define TC_CBQ_OVL_DROP 3
354 #define TC_CBQ_OVL_RCLASSIC 4
355 unsigned char priority2;
356 __u16 pad;
357 __u32 penalty;
360 struct tc_cbq_police
362 unsigned char police;
363 unsigned char __res1;
364 unsigned short __res2;
367 struct tc_cbq_fopt
369 __u32 split;
370 __u32 defmap;
371 __u32 defchange;
374 struct tc_cbq_xstats
376 __u32 borrows;
377 __u32 overactions;
378 __s32 avgidle;
379 __s32 undertime;
382 enum
384 TCA_CBQ_UNSPEC,
385 TCA_CBQ_LSSOPT,
386 TCA_CBQ_WRROPT,
387 TCA_CBQ_FOPT,
388 TCA_CBQ_OVL_STRATEGY,
389 TCA_CBQ_RATE,
390 TCA_CBQ_RTAB,
391 TCA_CBQ_POLICE,
392 __TCA_CBQ_MAX,
395 #define TCA_CBQ_MAX (__TCA_CBQ_MAX - 1)
397 /* dsmark section */
399 enum {
400 TCA_DSMARK_UNSPEC,
401 TCA_DSMARK_INDICES,
402 TCA_DSMARK_DEFAULT_INDEX,
403 TCA_DSMARK_SET_TC_INDEX,
404 TCA_DSMARK_MASK,
405 TCA_DSMARK_VALUE,
406 __TCA_DSMARK_MAX,
409 #define TCA_DSMARK_MAX (__TCA_DSMARK_MAX - 1)
411 /* ATM section */
413 enum {
414 TCA_ATM_UNSPEC,
415 TCA_ATM_FD, /* file/socket descriptor */
416 TCA_ATM_PTR, /* pointer to descriptor - later */
417 TCA_ATM_HDR, /* LL header */
418 TCA_ATM_EXCESS, /* excess traffic class (0 for CLP) */
419 TCA_ATM_ADDR, /* PVC address (for output only) */
420 TCA_ATM_STATE, /* VC state (ATM_VS_*; for output only) */
421 __TCA_ATM_MAX,
424 #define TCA_ATM_MAX (__TCA_ATM_MAX - 1)
426 /* Network emulator */
428 enum
430 TCA_NETEM_UNSPEC,
431 TCA_NETEM_CORR,
432 TCA_NETEM_DELAY_DIST,
433 TCA_NETEM_REORDER,
434 __TCA_NETEM_MAX,
437 #define TCA_NETEM_MAX (__TCA_NETEM_MAX - 1)
439 struct tc_netem_qopt
441 __u32 latency; /* added delay (us) */
442 __u32 limit; /* fifo limit (packets) */
443 __u32 loss; /* random packet loss (0=none ~0=100%) */
444 __u32 gap; /* re-ordering gap (0 for none) */
445 __u32 duplicate; /* random packet dup (0=none ~0=100%) */
446 __u32 jitter; /* random jitter in latency (us) */
449 struct tc_netem_corr
451 __u32 delay_corr; /* delay correlation */
452 __u32 loss_corr; /* packet loss correlation */
453 __u32 dup_corr; /* duplicate correlation */
456 struct tc_netem_reorder
458 __u32 probability;
459 __u32 correlation;
462 #define NETEM_DIST_SCALE 8192
464 #endif