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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - include/linux/pkt_sched.h
1 #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
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.
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 */
46 unsigned char ewma_log
;
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)
78 unsigned char cell_log
;
79 unsigned char __reserved
;
80 unsigned short overhead
;
86 #define TC_RTAB_SIZE 1024
89 unsigned char cell_log
;
90 unsigned char size_log
;
93 unsigned int linklayer
;
106 #define TCA_STAB_MAX (__TCA_STAB_MAX - 1)
112 __u32 limit
; /* Queue length: bytes for bfifo, packets for pfifo */
117 #define TCQ_PRIO_BANDS 16
118 #define TCQ_MIN_PRIO_BANDS 2
122 int bands
; /* Number of bands */
123 __u8 priomap
[TC_PRIO_MAX
+1]; /* Map: logical priority -> PRIO band */
128 struct tc_multiq_qopt
{
129 __u16 bands
; /* Number of bands */
130 __u16 max_bands
; /* Maximum number of queues */
137 struct tc_ratespec rate
;
138 struct tc_ratespec peakrate
;
153 #define TCA_TBF_MAX (__TCA_TBF_MAX - 1)
158 /* TEQL does not require any parameters */
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 */
177 * NOTE: limit, divisor and flows are hardwired to code at the moment.
179 * limit=flows=128, divisor=1024;
181 * The only reason for this is efficiency, it is possible
182 * to change these parameters in compile time.
195 #define TCA_RED_MAX (__TCA_RED_MAX - 1)
199 __u32 limit
; /* HARD maximal queue length (bytes) */
200 __u32 qth_min
; /* Min average length threshold (bytes) */
201 __u32 qth_max
; /* Max average length threshold (bytes) */
202 unsigned char Wlog
; /* log(W) */
203 unsigned char Plog
; /* log(P_max/(qth_max-qth_min)) */
204 unsigned char Scell_log
; /* cell size for idle damping */
207 #define TC_RED_HARDDROP 2
212 __u32 early
; /* Early drops */
213 __u32 pdrop
; /* Drops due to queue limits */
214 __u32 other
; /* Drops due to drop() calls */
215 __u32 marked
; /* Marked packets */
231 #define TCA_GRED_MAX (__TCA_GRED_MAX - 1)
235 __u32 limit
; /* HARD maximal queue length (bytes) */
236 __u32 qth_min
; /* Min average length threshold (bytes) */
237 __u32 qth_max
; /* Max average length threshold (bytes) */
238 __u32 DP
; /* upto 2^32 DPs */
245 __u8 Wlog
; /* log(W) */
246 __u8 Plog
; /* log(P_max/(qth_max-qth_min)) */
247 __u8 Scell_log
; /* cell size for idle damping */
248 __u8 prio
; /* prio of this VQ */
264 #define TC_HTB_NUMPRIO 8
265 #define TC_HTB_MAXDEPTH 8
266 #define TC_HTB_PROTOVER 3 /* the same as HTB and TC's major */
270 struct tc_ratespec rate
;
271 struct tc_ratespec ceil
;
275 __u32 level
; /* out only */
280 __u32 version
; /* to match HTB/TC */
281 __u32 rate2quantum
; /* bps->quantum divisor */
282 __u32 defcls
; /* default class number */
283 __u32 debug
; /* debug flags */
286 __u32 direct_pkts
; /* count of non shapped packets */
298 #define TCA_HTB_MAX (__TCA_HTB_MAX - 1)
304 __u32 giants
; /* too big packets (rate will not be accurate) */
313 __u16 defcls
; /* default class */
316 struct tc_service_curve
318 __u32 m1
; /* slope of the first segment in bps */
319 __u32 d
; /* x-projection of the first segment in us */
320 __u32 m2
; /* slope of the second segment in bps */
325 __u64 work
; /* total work done */
326 __u64 rtwork
; /* work done by real-time criteria */
327 __u32 period
; /* current period */
328 __u32 level
; /* class level in hierarchy */
340 #define TCA_HFSC_MAX (__TCA_HFSC_MAX - 1)
345 #define TC_CBQ_MAXPRIO 8
346 #define TC_CBQ_MAXLEVEL 8
347 #define TC_CBQ_DEF_EWMA 5
351 unsigned char change
;
353 #define TCF_CBQ_LSS_BOUNDED 1
354 #define TCF_CBQ_LSS_ISOLATED 2
355 unsigned char ewma_log
;
357 #define TCF_CBQ_LSS_FLAGS 1
358 #define TCF_CBQ_LSS_EWMA 2
359 #define TCF_CBQ_LSS_MAXIDLE 4
360 #define TCF_CBQ_LSS_MINIDLE 8
361 #define TCF_CBQ_LSS_OFFTIME 0x10
362 #define TCF_CBQ_LSS_AVPKT 0x20
372 unsigned char priority
;
373 unsigned char cpriority
;
374 unsigned char __reserved
;
381 unsigned char strategy
;
382 #define TC_CBQ_OVL_CLASSIC 0
383 #define TC_CBQ_OVL_DELAY 1
384 #define TC_CBQ_OVL_LOWPRIO 2
385 #define TC_CBQ_OVL_DROP 3
386 #define TC_CBQ_OVL_RCLASSIC 4
387 unsigned char priority2
;
394 unsigned char police
;
395 unsigned char __res1
;
396 unsigned short __res2
;
420 TCA_CBQ_OVL_STRATEGY
,
427 #define TCA_CBQ_MAX (__TCA_CBQ_MAX - 1)
434 TCA_DSMARK_DEFAULT_INDEX
,
435 TCA_DSMARK_SET_TC_INDEX
,
441 #define TCA_DSMARK_MAX (__TCA_DSMARK_MAX - 1)
447 TCA_ATM_FD
, /* file/socket descriptor */
448 TCA_ATM_PTR
, /* pointer to descriptor - later */
449 TCA_ATM_HDR
, /* LL header */
450 TCA_ATM_EXCESS
, /* excess traffic class (0 for CLP) */
451 TCA_ATM_ADDR
, /* PVC address (for output only) */
452 TCA_ATM_STATE
, /* VC state (ATM_VS_*; for output only) */
456 #define TCA_ATM_MAX (__TCA_ATM_MAX - 1)
458 /* Network emulator */
464 TCA_NETEM_DELAY_DIST
,
470 #define TCA_NETEM_MAX (__TCA_NETEM_MAX - 1)
474 __u32 latency
; /* added delay (us) */
475 __u32 limit
; /* fifo limit (packets) */
476 __u32 loss
; /* random packet loss (0=none ~0=100%) */
477 __u32 gap
; /* re-ordering gap (0 for none) */
478 __u32 duplicate
; /* random packet dup (0=none ~0=100%) */
479 __u32 jitter
; /* random jitter in latency (us) */
484 __u32 delay_corr
; /* delay correlation */
485 __u32 loss_corr
; /* packet loss correlation */
486 __u32 dup_corr
; /* duplicate correlation */
489 struct tc_netem_reorder
495 struct tc_netem_corrupt
501 #define NETEM_DIST_SCALE 8192
512 #define TCA_DRR_MAX (__TCA_DRR_MAX - 1)