aboutsummaryrefslogtreecommitdiff
path: root/include/linux/pkt_cls.h
blob: 99efbed81fa2ed1b72a3594b4be1a3b3ada4e1b7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
#ifndef __LINUX_PKT_CLS_H
#define __LINUX_PKT_CLS_H

#include <linux/pkt_sched.h>

/* I think i could have done better macros ; for now this is stolen from
 * some arch/mips code - jhs
*/
#define _TC_MAKE32(x) ((x))

#define _TC_MAKEMASK1(n) (_TC_MAKE32(1) << _TC_MAKE32(n))
#define _TC_MAKEMASK(v,n) (_TC_MAKE32((_TC_MAKE32(1)<<(v))-1) << _TC_MAKE32(n))
#define _TC_MAKEVALUE(v,n) (_TC_MAKE32(v) << _TC_MAKE32(n))
#define _TC_GETVALUE(v,n,m) ((_TC_MAKE32(v) & _TC_MAKE32(m)) >> _TC_MAKE32(n))

/* verdict bit breakdown 
 *
bit 0: when set -> this packet has been munged already

bit 1: when set -> It is ok to munge this packet

bit 2,3,4,5: Reclassify counter - sort of reverse TTL - if exceeded
assume loop

bit 6,7: Where this packet was last seen 
0: Above the transmit example at the socket level
1: on the Ingress
2: on the Egress

bit 8: when set --> Request not to classify on ingress. 

bits 9,10,11: redirect counter -  redirect TTL. Loop avoidance

 *
 * */

#define TC_MUNGED          _TC_MAKEMASK1(0)
#define SET_TC_MUNGED(v)   ( TC_MUNGED | (v & ~TC_MUNGED))
#define CLR_TC_MUNGED(v)   ( v & ~TC_MUNGED)

#define TC_OK2MUNGE        _TC_MAKEMASK1(1)
#define SET_TC_OK2MUNGE(v)   ( TC_OK2MUNGE | (v & ~TC_OK2MUNGE))
#define CLR_TC_OK2MUNGE(v)   ( v & ~TC_OK2MUNGE)

#define S_TC_VERD          _TC_MAKE32(2)
#define M_TC_VERD          _TC_MAKEMASK(4,S_TC_VERD)
#define G_TC_VERD(x)       _TC_GETVALUE(x,S_TC_VERD,M_TC_VERD)
#define V_TC_VERD(x)       _TC_MAKEVALUE(x,S_TC_VERD)
#define SET_TC_VERD(v,n)   ((V_TC_VERD(n)) | (v & ~M_TC_VERD))

#define S_TC_FROM          _TC_MAKE32(6)
#define M_TC_FROM          _TC_MAKEMASK(2,S_TC_FROM)
#define G_TC_FROM(x)       _TC_GETVALUE(x,S_TC_FROM,M_TC_FROM)
#define V_TC_FROM(x)       _TC_MAKEVALUE(x,S_TC_FROM)
#define SET_TC_FROM(v,n)   ((V_TC_FROM(n)) | (v & ~M_TC_FROM))
#define AT_STACK	0x0
#define AT_INGRESS	0x1
#define AT_EGRESS	0x2

#define TC_NCLS          _TC_MAKEMASK1(8)
#define SET_TC_NCLS(v)   ( TC_NCLS | (v & ~TC_NCLS))
#define CLR_TC_NCLS(v)   ( v & ~TC_NCLS)

#define S_TC_RTTL          _TC_MAKE32(9)
#define M_TC_RTTL          _TC_MAKEMASK(3,S_TC_RTTL)
#define G_TC_RTTL(x)       _TC_GETVALUE(x,S_TC_RTTL,M_TC_RTTL)
#define V_TC_RTTL(x)       _TC_MAKEVALUE(x,S_TC_RTTL)
#define SET_TC_RTTL(v,n)   ((V_TC_RTTL(n)) | (v & ~M_TC_RTTL))

#define S_TC_AT          _TC_MAKE32(12)
#define M_TC_AT          _TC_MAKEMASK(2,S_TC_AT)
#define G_TC_AT(x)       _TC_GETVALUE(x,S_TC_AT,M_TC_AT)
#define V_TC_AT(x)       _TC_MAKEVALUE(x,S_TC_AT)
#define SET_TC_AT(v,n)   ((V_TC_AT(n)) | (v & ~M_TC_AT))

/* Action attributes */
enum
{
	TCA_ACT_UNSPEC,
	TCA_ACT_KIND,
	TCA_ACT_OPTIONS,
	TCA_ACT_INDEX,
	TCA_ACT_STATS,
	__TCA_ACT_MAX
};

#define TCA_ACT_MAX __TCA_ACT_MAX
#define TCA_OLD_COMPAT (TCA_ACT_MAX+1)
#define TCA_ACT_MAX_PRIO 32
#define TCA_ACT_BIND	1
#define TCA_ACT_NOBIND	0
#define TCA_ACT_UNBIND	1
#define TCA_ACT_NOUNBIND	0
#define TCA_ACT_REPLACE		1
#define TCA_ACT_NOREPLACE	0
#define MAX_REC_LOOP 4
#define MAX_RED_LOOP 4

#define TC_ACT_UNSPEC	(-1)
#define TC_ACT_OK		0
#define TC_ACT_RECLASSIFY	1
#define TC_ACT_SHOT		2
#define TC_ACT_PIPE		3
#define TC_ACT_STOLEN		4
#define TC_ACT_QUEUED		5
#define TC_ACT_REPEAT		6
#define TC_ACT_JUMP		0x10000000

/* Action type identifiers*/
enum
{
	TCA_ID_UNSPEC=0,
	TCA_ID_POLICE=1,
	/* other actions go here */
	__TCA_ID_MAX=255
};

#define TCA_ID_MAX __TCA_ID_MAX

struct tc_police
{
	__u32			index;
	int			action;
#define TC_POLICE_UNSPEC	TC_ACT_UNSPEC
#define TC_POLICE_OK		TC_ACT_OK
#define TC_POLICE_RECLASSIFY	TC_ACT_RECLASSIFY
#define TC_POLICE_SHOT		TC_ACT_SHOT
#define TC_POLICE_PIPE		TC_ACT_PIPE

	__u32			limit;
	__u32			burst;
	__u32			mtu;
	struct tc_ratespec	rate;
	struct tc_ratespec	peakrate;
	int 			refcnt;
	int 			bindcnt;
	__u32			capab;
};

struct tcf_t
{
	__u64   install;
	__u64   lastuse;
	__u64   expires;
};

struct tc_cnt
{
	int                   refcnt; 
	int                   bindcnt;
};

#define tc_gen \
	__u32                 index; \
	__u32                 capab; \
	int                   action; \
	int                   refcnt; \
	int                   bindcnt

enum
{
	TCA_POLICE_UNSPEC,
	TCA_POLICE_TBF,
	TCA_POLICE_RATE,
	TCA_POLICE_PEAKRATE,
	TCA_POLICE_AVRATE,
	TCA_POLICE_RESULT,
	__TCA_POLICE_MAX
#define TCA_POLICE_RESULT TCA_POLICE_RESULT
};

#define TCA_POLICE_MAX (__TCA_POLICE_MAX - 1)

/* U32 filters */

#define TC_U32_HTID(h) ((h)&0xFFF00000)
#define TC_U32_USERHTID(h) (TC_U32_HTID(h)>>20)
#define TC_U32_HASH(h) (((h)>>12)&0xFF)
#define TC_U32_NODE(h) ((h)&0xFFF)
#define TC_U32_KEY(h) ((h)&0xFFFFF)
#define TC_U32_UNSPEC	0
#define TC_U32_ROOT	(0xFFF00000)

enum
{
	TCA_U32_UNSPEC,
	TCA_U32_CLASSID,
	TCA_U32_HASH,
	TCA_U32_LINK,
	TCA_U32_DIVISOR,
	TCA_U32_SEL,
	TCA_U32_POLICE,
	TCA_U32_ACT,   
	TCA_U32_INDEV,
	TCA_U32_PCNT,
	TCA_U32_MARK,
	__TCA_U32_MAX
};

#define TCA_U32_MAX (__TCA_U32_MAX - 1)

struct tc_u32_key
{
	__be32		mask;
	__be32		val;
	int		off;
	int		offmask;
};

struct tc_u32_sel
{
	unsigned char		flags;
	unsigned char		offshift;
	unsigned char		nkeys;

	__be16			offmask;
	__u16			off;
	short			offoff;

	short			hoff;
	__be32			hmask;
	struct tc_u32_key	keys[0];
};

struct tc_u32_mark
{
	__u32		val;
	__u32		mask;
	__u32		success;
};

struct tc_u32_pcnt
{
	__u64 rcnt;
	__u64 rhit;
	__u64 kcnts[0];
};

/* Flags */

#define TC_U32_TERMINAL		1
#define TC_U32_OFFSET		2
#define TC_U32_VAROFFSET	4
#define TC_U32_EAT		8

#define TC_U32_MAXDEPTH 8


/* RSVP filter */

enum
{
	TCA_RSVP_UNSPEC,
	TCA_RSVP_CLASSID,
	TCA_RSVP_DST,
	TCA_RSVP_SRC,
	TCA_RSVP_PINFO,
	TCA_RSVP_POLICE,
	TCA_RSVP_ACT,
	__TCA_RSVP_MAX
};

#define TCA_RSVP_MAX (__TCA_RSVP_MAX - 1 )

struct tc_rsvp_gpi
{
	__u32	key;
	__u32	mask;
	int	offset;
};

struct tc_rsvp_pinfo
{
	struct tc_rsvp_gpi dpi;
	struct tc_rsvp_gpi spi;
	__u8	protocol;
	__u8	tunnelid;
	__u8	tunnelhdr;
	__u8	pad;
};

/* ROUTE filter */

enum
{
	TCA_ROUTE4_UNSPEC,
	TCA_ROUTE4_CLASSID,
	TCA_ROUTE4_TO,
	TCA_ROUTE4_FROM,
	TCA_ROUTE4_IIF,
	TCA_ROUTE4_POLICE,
	TCA_ROUTE4_ACT,
	__TCA_ROUTE4_MAX
};

#define TCA_ROUTE4_MAX (__TCA_ROUTE4_MAX - 1)


/* FW filter */

enum
{
	TCA_FW_UNSPEC,
	TCA_FW_CLASSID,
	TCA_FW_POLICE,
	TCA_FW_INDEV, /*  used by CONFIG_NET_CLS_IND */
	TCA_FW_ACT, /* used by CONFIG_NET_CLS_ACT */
	TCA_FW_MASK,
	__TCA_FW_MAX
};

#define TCA_FW_MAX (__TCA_FW_MAX - 1)

/* TC index filter */

enum
{
	TCA_TCINDEX_UNSPEC,
	TCA_TCINDEX_HASH,
	TCA_TCINDEX_MASK,
	TCA_TCINDEX_SHIFT,
	TCA_TCINDEX_FALL_THROUGH,
	TCA_TCINDEX_CLASSID,
	TCA_TCINDEX_POLICE,
	TCA_TCINDEX_ACT,
	__TCA_TCINDEX_MAX
};

#define TCA_TCINDEX_MAX     (__TCA_TCINDEX_MAX - 1)

/* Flow filter */

enum
{
	FLOW_KEY_SRC,
	FLOW_KEY_DST,
	FLOW_KEY_PROTO,
	FLOW_KEY_PROTO_SRC,
	FLOW_KEY_PROTO_DST,
	FLOW_KEY_IIF,
	FLOW_KEY_PRIORITY,
	FLOW_KEY_MARK,
	FLOW_KEY_NFCT,
	FLOW_KEY_NFCT_SRC,
	FLOW_KEY_NFCT_DST,
	FLOW_KEY_NFCT_PROTO_SRC,
	FLOW_KEY_NFCT_PROTO_DST,
	FLOW_KEY_RTCLASSID,
	FLOW_KEY_SKUID,
	FLOW_KEY_SKGID,
	FLOW_KEY_VLAN_TAG,
	__FLOW_KEY_MAX,
};

#define FLOW_KEY_MAX	(__FLOW_KEY_MAX - 1)

enum
{
	FLOW_MODE_MAP,
	FLOW_MODE_HASH,
};

enum
{
	TCA_FLOW_UNSPEC,
	TCA_FLOW_KEYS,
	TCA_FLOW_MODE,
	TCA_FLOW_BASECLASS,
	TCA_FLOW_RSHIFT,
	TCA_FLOW_ADDEND,
	TCA_FLOW_MASK,
	TCA_FLOW_XOR,
	TCA_FLOW_DIVISOR,
	TCA_FLOW_ACT,
	TCA_FLOW_POLICE,
	TCA_FLOW_EMATCHES,
	__TCA_FLOW_MAX
};

#define TCA_FLOW_MAX	(__TCA_FLOW_MAX - 1)

/* Basic filter */

enum
{
	TCA_BASIC_UNSPEC,
	TCA_BASIC_CLASSID,
	TCA_BASIC_EMATCHES,
	TCA_BASIC_ACT,
	TCA_BASIC_POLICE,
	__TCA_BASIC_MAX
};

#define TCA_BASIC_MAX (__TCA_BASIC_MAX - 1)

/* Extended Matches */

struct tcf_ematch_tree_hdr
{
	__u16		nmatches;
	__u16		progid;
};

enum
{
	TCA_EMATCH_TREE_UNSPEC,
	TCA_EMATCH_TREE_HDR,
	TCA_EMATCH_TREE_LIST,
	__TCA_EMATCH_TREE_MAX
};
#define TCA_EMATCH_TREE_MAX (__TCA_EMATCH_TREE_MAX - 1)

struct tcf_ematch_hdr
{
	__u16		matchid;
	__u16		kind;
	__u16		flags;
	__u16		pad; /* currently unused */
};

/*  0                   1
 *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 
 * +-----------------------+-+-+---+
 * |         Unused        |S|I| R |
 * +-----------------------+-+-+---+
 *
 * R(2) ::= relation to next ematch
 *          where: 0 0 END (last ematch)
 *                 0 1 AND
 *                 1 0 OR
 *                 1 1 Unused (invalid)
 * I(1) ::= invert result
 * S(1) ::= simple payload
 */
#define TCF_EM_REL_END	0
#define TCF_EM_REL_AND	(1<<0)
#define TCF_EM_REL_OR	(1<<1)
#define TCF_EM_INVERT	(1<<2)
#define TCF_EM_SIMPLE	(1<<3)

#define TCF_EM_REL_MASK	3
#define TCF_EM_REL_VALID(v) (((v) & TCF_EM_REL_MASK) != TCF_EM_REL_MASK)

enum
{
	TCF_LAYER_LINK,
	TCF_LAYER_NETWORK,
	TCF_LAYER_TRANSPORT,
	__TCF_LAYER_MAX
};
#define TCF_LAYER_MAX (__TCF_LAYER_MAX - 1)

/* Ematch type assignments
 *   1..32767		Reserved for ematches inside kernel tree
 *   32768..65535	Free to use, not reliable
 */
#define	TCF_EM_CONTAINER	0
#define	TCF_EM_CMP		1
#define	TCF_EM_NBYTE		2
#define	TCF_EM_U32		3
#define	TCF_EM_META		4
#define	TCF_EM_TEXT		5
#define        TCF_EM_VLAN		6
#define	TCF_EM_MAX		6

enum
{
	TCF_EM_PROG_TC
};

enum
{
	TCF_EM_OPND_EQ,
	TCF_EM_OPND_GT,
	TCF_EM_OPND_LT
};

#endif