source: MondoRescue/branches/stable/mindi-busybox/networking/libiproute/linux/pkt_sched.h@ 821

Last change on this file since 821 was 821, checked in by Bruno Cornec, 18 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)
File size: 8.8 KB
Line 
1#ifndef __LINUX_PKT_SCHED_H
2#define __LINUX_PKT_SCHED_H
3
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.
7
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.
11
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.
15 */
16
17#include <asm/types.h>
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
32struct 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#ifdef __KERNEL__
44 spinlock_t *lock;
45#endif
46};
47
48struct tc_estimator
49{
50 char interval;
51 unsigned char ewma_log;
52};
53
54/* "Handles"
55 ---------
56
57 All the traffic control objects have 32bit identifiers, or "handles".
58
59 They can be considered as opaque numbers from user API viewpoint,
60 but actually they always consist of two fields: major and
61 minor numbers, which are interpreted by kernel specially,
62 that may be used by applications, though not recommended.
63
64 F.e. qdisc handles always have minor number equal to zero,
65 classes (or flows) have major equal to parent qdisc major, and
66 minor uniquely identifying class inside qdisc.
67
68 Macros to manipulate handles:
69 */
70
71#define TC_H_MAJ_MASK (0xFFFF0000U)
72#define TC_H_MIN_MASK (0x0000FFFFU)
73#define TC_H_MAJ(h) ((h)&TC_H_MAJ_MASK)
74#define TC_H_MIN(h) ((h)&TC_H_MIN_MASK)
75#define TC_H_MAKE(maj,min) (((maj)&TC_H_MAJ_MASK)|((min)&TC_H_MIN_MASK))
76
77#define TC_H_UNSPEC (0U)
78#define TC_H_ROOT (0xFFFFFFFFU)
79#define TC_H_INGRESS (0xFFFFFFF1U)
80
81struct tc_ratespec
82{
83 unsigned char cell_log;
84 unsigned char __reserved;
85 unsigned short feature;
86 short addend;
87 unsigned short mpu;
88 __u32 rate;
89};
90
91/* FIFO section */
92
93struct tc_fifo_qopt
94{
95 __u32 limit; /* Queue length: bytes for bfifo, packets for pfifo */
96};
97
98/* PRIO section */
99
100#define TCQ_PRIO_BANDS 16
101
102struct tc_prio_qopt
103{
104 int bands; /* Number of bands */
105 __u8 priomap[TC_PRIO_MAX+1]; /* Map: logical priority -> PRIO band */
106};
107
108/* CSZ section */
109
110struct tc_csz_qopt
111{
112 int flows; /* Maximal number of guaranteed flows */
113 unsigned char R_log; /* Fixed point position for round number */
114 unsigned char delta_log; /* Log of maximal managed time interval */
115 __u8 priomap[TC_PRIO_MAX+1]; /* Map: logical priority -> CSZ band */
116};
117
118struct tc_csz_copt
119{
120 struct tc_ratespec slice;
121 struct tc_ratespec rate;
122 struct tc_ratespec peakrate;
123 __u32 limit;
124 __u32 buffer;
125 __u32 mtu;
126};
127
128enum
129{
130 TCA_CSZ_UNSPEC,
131 TCA_CSZ_PARMS,
132 TCA_CSZ_RTAB,
133 TCA_CSZ_PTAB,
134};
135
136/* TBF section */
137
138struct tc_tbf_qopt
139{
140 struct tc_ratespec rate;
141 struct tc_ratespec peakrate;
142 __u32 limit;
143 __u32 buffer;
144 __u32 mtu;
145};
146
147enum
148{
149 TCA_TBF_UNSPEC,
150 TCA_TBF_PARMS,
151 TCA_TBF_RTAB,
152 TCA_TBF_PTAB,
153};
154
155
156/* TEQL section */
157
158/* TEQL does not require any parameters */
159
160/* SFQ section */
161
162struct tc_sfq_qopt
163{
164 unsigned quantum; /* Bytes per round allocated to flow */
165 int perturb_period; /* Period of hash perturbation */
166 __u32 limit; /* Maximal packets in queue */
167 unsigned divisor; /* Hash divisor */
168 unsigned flows; /* Maximal number of flows */
169};
170
171/*
172 * NOTE: limit, divisor and flows are hardwired to code at the moment.
173 *
174 * limit=flows=128, divisor=1024;
175 *
176 * The only reason for this is efficiency, it is possible
177 * to change these parameters in compile time.
178 */
179
180/* RED section */
181
182enum
183{
184 TCA_RED_UNSPEC,
185 TCA_RED_PARMS,
186 TCA_RED_STAB,
187};
188
189struct tc_red_qopt
190{
191 __u32 limit; /* HARD maximal queue length (bytes) */
192 __u32 qth_min; /* Min average length threshold (bytes) */
193 __u32 qth_max; /* Max average length threshold (bytes) */
194 unsigned char Wlog; /* log(W) */
195 unsigned char Plog; /* log(P_max/(qth_max-qth_min)) */
196 unsigned char Scell_log; /* cell size for idle damping */
197 unsigned char flags;
198#define TC_RED_ECN 1
199};
200
201struct tc_red_xstats
202{
203 __u32 early; /* Early drops */
204 __u32 pdrop; /* Drops due to queue limits */
205 __u32 other; /* Drops due to drop() calls */
206 __u32 marked; /* Marked packets */
207};
208
209/* GRED section */
210
211#define MAX_DPs 16
212
213enum
214{
215 TCA_GRED_UNSPEC,
216 TCA_GRED_PARMS,
217 TCA_GRED_STAB,
218 TCA_GRED_DPS,
219};
220
221#define TCA_SET_OFF TCA_GRED_PARMS
222struct tc_gred_qopt
223{
224 __u32 limit; /* HARD maximal queue length (bytes)
225*/
226 __u32 qth_min; /* Min average length threshold (bytes)
227*/
228 __u32 qth_max; /* Max average length threshold (bytes)
229*/
230 __u32 DP; /* upto 2^32 DPs */
231 __u32 backlog;
232 __u32 qave;
233 __u32 forced;
234 __u32 early;
235 __u32 other;
236 __u32 pdrop;
237
238 unsigned char Wlog; /* log(W) */
239 unsigned char Plog; /* log(P_max/(qth_max-qth_min)) */
240 unsigned char Scell_log; /* cell size for idle damping */
241 __u8 prio; /* prio of this VQ */
242 __u32 packets;
243 __u32 bytesin;
244};
245/* gred setup */
246struct tc_gred_sopt
247{
248 __u32 DPs;
249 __u32 def_DP;
250 __u8 grio;
251};
252
253/* HTB section */
254#define TC_HTB_NUMPRIO 4
255#define TC_HTB_MAXDEPTH 4
256
257struct tc_htb_opt
258{
259 struct tc_ratespec rate;
260 struct tc_ratespec ceil;
261 __u32 buffer;
262 __u32 cbuffer;
263 __u32 quantum; /* out only */
264 __u32 level; /* out only */
265 __u8 prio;
266 __u8 injectd; /* inject class distance */
267 __u8 pad[2];
268};
269struct tc_htb_glob
270{
271 __u32 rate2quantum; /* bps->quantum divisor */
272 __u32 defcls; /* default class number */
273 __u32 use_dcache; /* use dequeue cache ? */
274 __u32 debug; /* debug flags */
275
276
277 /* stats */
278 __u32 deq_rate; /* dequeue rate */
279 __u32 utilz; /* dequeue utilization */
280 __u32 trials; /* deq_prio trials per dequeue */
281 __u32 dcache_hits;
282 __u32 direct_pkts; /* count of non shapped packets */
283};
284enum
285{
286 TCA_HTB_UNSPEC,
287 TCA_HTB_PARMS,
288 TCA_HTB_INIT,
289 TCA_HTB_CTAB,
290 TCA_HTB_RTAB,
291};
292struct tc_htb_xstats
293{
294 __u32 lends;
295 __u32 borrows;
296 __u32 giants; /* too big packets (rate will not be accurate) */
297 __u32 injects; /* how many times leaf used injected bw */
298 __u32 tokens;
299 __u32 ctokens;
300};
301
302/* CBQ section */
303
304#define TC_CBQ_MAXPRIO 8
305#define TC_CBQ_MAXLEVEL 8
306#define TC_CBQ_DEF_EWMA 5
307
308struct tc_cbq_lssopt
309{
310 unsigned char change;
311 unsigned char flags;
312#define TCF_CBQ_LSS_BOUNDED 1
313#define TCF_CBQ_LSS_ISOLATED 2
314 unsigned char ewma_log;
315 unsigned char level;
316#define TCF_CBQ_LSS_FLAGS 1
317#define TCF_CBQ_LSS_EWMA 2
318#define TCF_CBQ_LSS_MAXIDLE 4
319#define TCF_CBQ_LSS_MINIDLE 8
320#define TCF_CBQ_LSS_OFFTIME 0x10
321#define TCF_CBQ_LSS_AVPKT 0x20
322 __u32 maxidle;
323 __u32 minidle;
324 __u32 offtime;
325 __u32 avpkt;
326};
327
328struct tc_cbq_wrropt
329{
330 unsigned char flags;
331 unsigned char priority;
332 unsigned char cpriority;
333 unsigned char __reserved;
334 __u32 allot;
335 __u32 weight;
336};
337
338struct tc_cbq_ovl
339{
340 unsigned char strategy;
341#define TC_CBQ_OVL_CLASSIC 0
342#define TC_CBQ_OVL_DELAY 1
343#define TC_CBQ_OVL_LOWPRIO 2
344#define TC_CBQ_OVL_DROP 3
345#define TC_CBQ_OVL_RCLASSIC 4
346 unsigned char priority2;
347 __u32 penalty;
348};
349
350struct tc_cbq_police
351{
352 unsigned char police;
353 unsigned char __res1;
354 unsigned short __res2;
355};
356
357struct tc_cbq_fopt
358{
359 __u32 split;
360 __u32 defmap;
361 __u32 defchange;
362};
363
364struct tc_cbq_xstats
365{
366 __u32 borrows;
367 __u32 overactions;
368 __s32 avgidle;
369 __s32 undertime;
370};
371
372enum
373{
374 TCA_CBQ_UNSPEC,
375 TCA_CBQ_LSSOPT,
376 TCA_CBQ_WRROPT,
377 TCA_CBQ_FOPT,
378 TCA_CBQ_OVL_STRATEGY,
379 TCA_CBQ_RATE,
380 TCA_CBQ_RTAB,
381 TCA_CBQ_POLICE,
382};
383
384#define TCA_CBQ_MAX TCA_CBQ_POLICE
385
386/* dsmark section */
387
388enum {
389 TCA_DSMARK_UNSPEC,
390 TCA_DSMARK_INDICES,
391 TCA_DSMARK_DEFAULT_INDEX,
392 TCA_DSMARK_SET_TC_INDEX,
393 TCA_DSMARK_MASK,
394 TCA_DSMARK_VALUE
395};
396
397#define TCA_DSMARK_MAX TCA_DSMARK_VALUE
398
399/* ATM section */
400
401enum {
402 TCA_ATM_UNSPEC,
403 TCA_ATM_FD, /* file/socket descriptor */
404 TCA_ATM_PTR, /* pointer to descriptor - later */
405 TCA_ATM_HDR, /* LL header */
406 TCA_ATM_EXCESS, /* excess traffic class (0 for CLP) */
407 TCA_ATM_ADDR, /* PVC address (for output only) */
408 TCA_ATM_STATE /* VC state (ATM_VS_*; for output only) */
409};
410
411#define TCA_ATM_MAX TCA_ATM_STATE
412
413#endif
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