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, 14 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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