pkt_cls.h revision ead2ba7008c9db02954dae6f180aed8770a0560d 
1#ifndef __LINUX_PKT_CLS_H
2#define __LINUX_PKT_CLS_H
3
4#include <linux/pkt_sched.h>
5
6/* I think i could have done better macros ; for now this is stolen from
7 * some arch/mips code - jhs
8*/
9#define _TC_MAKE32(x) ((x))
10
11#define _TC_MAKEMASK1(n) (_TC_MAKE32(1) << _TC_MAKE32(n))
12#define _TC_MAKEMASK(v,n) (_TC_MAKE32((_TC_MAKE32(1)<<(v))-1) << _TC_MAKE32(n))
13#define _TC_MAKEVALUE(v,n) (_TC_MAKE32(v) << _TC_MAKE32(n))
14#define _TC_GETVALUE(v,n,m) ((_TC_MAKE32(v) & _TC_MAKE32(m)) >> _TC_MAKE32(n))
15
16/* verdict bit breakdown
17 *
18bit 0: when set -> this packet has been munged already
19
20bit 1: when set -> It is ok to munge this packet
21
22bit 2,3,4,5: Reclassify counter - sort of reverse TTL - if exceeded
23assume loop
24
25bit 6,7: Where this packet was last seen
260: Above the transmit example at the socket level
271: on the Ingress
282: on the Egress
29
30bit 8: when set --> Request not to classify on ingress.
31
32bits 9,10,11: redirect counter -  redirect TTL. Loop avoidance
33
34 *
35 * */
36
37#define TC_MUNGED          _TC_MAKEMASK1(0)
38#define SET_TC_MUNGED(v)   ( TC_MUNGED | (v & ~TC_MUNGED))
39#define CLR_TC_MUNGED(v)   ( v & ~TC_MUNGED)
40
41#define TC_OK2MUNGE        _TC_MAKEMASK1(1)
42#define SET_TC_OK2MUNGE(v)   ( TC_OK2MUNGE | (v & ~TC_OK2MUNGE))
43#define CLR_TC_OK2MUNGE(v)   ( v & ~TC_OK2MUNGE)
44
45#define S_TC_VERD          _TC_MAKE32(2)
46#define M_TC_VERD          _TC_MAKEMASK(4,S_TC_VERD)
47#define G_TC_VERD(x)       _TC_GETVALUE(x,S_TC_VERD,M_TC_VERD)
48#define V_TC_VERD(x)       _TC_MAKEVALUE(x,S_TC_VERD)
49#define SET_TC_VERD(v,n)   ((V_TC_VERD(n)) | (v & ~M_TC_VERD))
50
51#define S_TC_FROM          _TC_MAKE32(6)
52#define M_TC_FROM          _TC_MAKEMASK(2,S_TC_FROM)
53#define G_TC_FROM(x)       _TC_GETVALUE(x,S_TC_FROM,M_TC_FROM)
54#define V_TC_FROM(x)       _TC_MAKEVALUE(x,S_TC_FROM)
55#define SET_TC_FROM(v,n)   ((V_TC_FROM(n)) | (v & ~M_TC_FROM))
56#define AT_STACK	0x0
57#define AT_INGRESS	0x1
58#define AT_EGRESS	0x2
59
60#define TC_NCLS          _TC_MAKEMASK1(8)
61#define SET_TC_NCLS(v)   ( TC_NCLS | (v & ~TC_NCLS))
62#define CLR_TC_NCLS(v)   ( v & ~TC_NCLS)
63
64#define S_TC_RTTL          _TC_MAKE32(9)
65#define M_TC_RTTL          _TC_MAKEMASK(3,S_TC_RTTL)
66#define G_TC_RTTL(x)       _TC_GETVALUE(x,S_TC_RTTL,M_TC_RTTL)
67#define V_TC_RTTL(x)       _TC_MAKEVALUE(x,S_TC_RTTL)
68#define SET_TC_RTTL(v,n)   ((V_TC_RTTL(n)) | (v & ~M_TC_RTTL))
69
70#define S_TC_AT          _TC_MAKE32(12)
71#define M_TC_AT          _TC_MAKEMASK(2,S_TC_AT)
72#define G_TC_AT(x)       _TC_GETVALUE(x,S_TC_AT,M_TC_AT)
73#define V_TC_AT(x)       _TC_MAKEVALUE(x,S_TC_AT)
74#define SET_TC_AT(v,n)   ((V_TC_AT(n)) | (v & ~M_TC_AT))
75
76/* Action attributes */
77enum
78{
79	TCA_ACT_UNSPEC,
80	TCA_ACT_KIND,
81	TCA_ACT_OPTIONS,
82	TCA_ACT_INDEX,
83	TCA_ACT_STATS,
84	__TCA_ACT_MAX
85};
86
87#define TCA_ACT_MAX __TCA_ACT_MAX
88#define TCA_OLD_COMPAT (TCA_ACT_MAX+1)
89#define TCA_ACT_MAX_PRIO 32
90#define TCA_ACT_BIND	1
91#define TCA_ACT_NOBIND	0
92#define TCA_ACT_UNBIND	1
93#define TCA_ACT_NOUNBIND	0
94#define TCA_ACT_REPLACE		1
95#define TCA_ACT_NOREPLACE	0
96#define MAX_REC_LOOP 4
97#define MAX_RED_LOOP 4
98
99#define TC_ACT_UNSPEC	(-1)
100#define TC_ACT_OK		0
101#define TC_ACT_RECLASSIFY	1
102#define TC_ACT_SHOT		2
103#define TC_ACT_PIPE		3
104#define TC_ACT_STOLEN		4
105#define TC_ACT_QUEUED		5
106#define TC_ACT_REPEAT		6
107#define TC_ACT_JUMP		0x10000000
108
109/* Action type identifiers*/
110enum
111{
112	TCA_ID_UNSPEC=0,
113	TCA_ID_POLICE=1,
114	/* other actions go here */
115	__TCA_ID_MAX=255
116};
117
118#define TCA_ID_MAX __TCA_ID_MAX
119
120struct tc_police
121{
122	__u32			index;
123	int			action;
124#define TC_POLICE_UNSPEC	TC_ACT_UNSPEC
125#define TC_POLICE_OK		TC_ACT_OK
126#define TC_POLICE_RECLASSIFY	TC_ACT_RECLASSIFY
127#define TC_POLICE_SHOT		TC_ACT_SHOT
128#define TC_POLICE_PIPE		TC_ACT_PIPE
129
130	__u32			limit;
131	__u32			burst;
132	__u32			mtu;
133	struct tc_ratespec	rate;
134	struct tc_ratespec	peakrate;
135	int 			refcnt;
136	int 			bindcnt;
137	__u32			capab;
138};
139
140struct tcf_t
141{
142	__u64   install;
143	__u64   lastuse;
144	__u64   expires;
145};
146
147struct tc_cnt
148{
149	int                   refcnt;
150	int                   bindcnt;
151};
152
153#define tc_gen \
154	__u32                 index; \
155	__u32                 capab; \
156	int                   action; \
157	int                   refcnt; \
158	int                   bindcnt
159
160enum
161{
162	TCA_POLICE_UNSPEC,
163	TCA_POLICE_TBF,
164	TCA_POLICE_RATE,
165	TCA_POLICE_PEAKRATE,
166	TCA_POLICE_AVRATE,
167	TCA_POLICE_RESULT,
168	__TCA_POLICE_MAX
169#define TCA_POLICE_RESULT TCA_POLICE_RESULT
170};
171
172#define TCA_POLICE_MAX (__TCA_POLICE_MAX - 1)
173
174/* U32 filters */
175
176#define TC_U32_HTID(h) ((h)&0xFFF00000)
177#define TC_U32_USERHTID(h) (TC_U32_HTID(h)>>20)
178#define TC_U32_HASH(h) (((h)>>12)&0xFF)
179#define TC_U32_NODE(h) ((h)&0xFFF)
180#define TC_U32_KEY(h) ((h)&0xFFFFF)
181#define TC_U32_UNSPEC	0
182#define TC_U32_ROOT	(0xFFF00000)
183
184enum
185{
186	TCA_U32_UNSPEC,
187	TCA_U32_CLASSID,
188	TCA_U32_HASH,
189	TCA_U32_LINK,
190	TCA_U32_DIVISOR,
191	TCA_U32_SEL,
192	TCA_U32_POLICE,
193	TCA_U32_ACT,
194	TCA_U32_INDEV,
195	TCA_U32_PCNT,
196	TCA_U32_MARK,
197	__TCA_U32_MAX
198};
199
200#define TCA_U32_MAX (__TCA_U32_MAX - 1)
201
202struct tc_u32_key
203{
204	__u32		mask;
205	__u32		val;
206	int		off;
207	int		offmask;
208};
209
210struct tc_u32_sel
211{
212	unsigned char		flags;
213	unsigned char		offshift;
214	unsigned char		nkeys;
215
216	__u16			offmask;
217	__u16			off;
218	short			offoff;
219
220	short			hoff;
221	__u32			hmask;
222	struct tc_u32_key	keys[0];
223};
224
225struct tc_u32_mark
226{
227	__u32		val;
228	__u32		mask;
229	__u32		success;
230};
231
232struct tc_u32_pcnt
233{
234	__u64 rcnt;
235	__u64 rhit;
236	__u64 kcnts[0];
237};
238
239/* Flags */
240
241#define TC_U32_TERMINAL		1
242#define TC_U32_OFFSET		2
243#define TC_U32_VAROFFSET	4
244#define TC_U32_EAT		8
245
246#define TC_U32_MAXDEPTH 8
247
248
249/* RSVP filter */
250
251enum
252{
253	TCA_RSVP_UNSPEC,
254	TCA_RSVP_CLASSID,
255	TCA_RSVP_DST,
256	TCA_RSVP_SRC,
257	TCA_RSVP_PINFO,
258	TCA_RSVP_POLICE,
259	TCA_RSVP_ACT,
260	__TCA_RSVP_MAX
261};
262
263#define TCA_RSVP_MAX (__TCA_RSVP_MAX - 1 )
264
265struct tc_rsvp_gpi
266{
267	__u32	key;
268	__u32	mask;
269	int	offset;
270};
271
272struct tc_rsvp_pinfo
273{
274	struct tc_rsvp_gpi dpi;
275	struct tc_rsvp_gpi spi;
276	__u8	protocol;
277	__u8	tunnelid;
278	__u8	tunnelhdr;
279	__u8	pad;
280};
281
282/* ROUTE filter */
283
284enum
285{
286	TCA_ROUTE4_UNSPEC,
287	TCA_ROUTE4_CLASSID,
288	TCA_ROUTE4_TO,
289	TCA_ROUTE4_FROM,
290	TCA_ROUTE4_IIF,
291	TCA_ROUTE4_POLICE,
292	TCA_ROUTE4_ACT,
293	__TCA_ROUTE4_MAX
294};
295
296#define TCA_ROUTE4_MAX (__TCA_ROUTE4_MAX - 1)
297
298
299/* FW filter */
300
301enum
302{
303	TCA_FW_UNSPEC,
304	TCA_FW_CLASSID,
305	TCA_FW_POLICE,
306	TCA_FW_INDEV, /*  used by CONFIG_NET_CLS_IND */
307	TCA_FW_ACT, /* used by CONFIG_NET_CLS_ACT */
308	TCA_FW_MASK,
309	__TCA_FW_MAX
310};
311
312#define TCA_FW_MAX (__TCA_FW_MAX - 1)
313
314/* TC index filter */
315
316enum
317{
318	TCA_TCINDEX_UNSPEC,
319	TCA_TCINDEX_HASH,
320	TCA_TCINDEX_MASK,
321	TCA_TCINDEX_SHIFT,
322	TCA_TCINDEX_FALL_THROUGH,
323	TCA_TCINDEX_CLASSID,
324	TCA_TCINDEX_POLICE,
325	TCA_TCINDEX_ACT,
326	__TCA_TCINDEX_MAX
327};
328
329#define TCA_TCINDEX_MAX     (__TCA_TCINDEX_MAX - 1)
330
331/* Basic filter */
332
333enum
334{
335	TCA_BASIC_UNSPEC,
336	TCA_BASIC_CLASSID,
337	TCA_BASIC_EMATCHES,
338	TCA_BASIC_ACT,
339	TCA_BASIC_POLICE,
340	__TCA_BASIC_MAX
341};
342
343#define TCA_BASIC_MAX (__TCA_BASIC_MAX - 1)
344
345/* Extended Matches */
346
347struct tcf_ematch_tree_hdr
348{
349	__u16		nmatches;
350	__u16		progid;
351};
352
353enum
354{
355	TCA_EMATCH_TREE_UNSPEC,
356	TCA_EMATCH_TREE_HDR,
357	TCA_EMATCH_TREE_LIST,
358	__TCA_EMATCH_TREE_MAX
359};
360#define TCA_EMATCH_TREE_MAX (__TCA_EMATCH_TREE_MAX - 1)
361
362struct tcf_ematch_hdr
363{
364	__u16		matchid;
365	__u16		kind;
366	__u16		flags;
367	__u16		pad; /* currently unused */
368};
369
370/*  0                   1
371 *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
372 * +-----------------------+-+-+---+
373 * |         Unused        |S|I| R |
374 * +-----------------------+-+-+---+
375 *
376 * R(2) ::= relation to next ematch
377 *          where: 0 0 END (last ematch)
378 *                 0 1 AND
379 *                 1 0 OR
380 *                 1 1 Unused (invalid)
381 * I(1) ::= invert result
382 * S(1) ::= simple payload
383 */
384#define TCF_EM_REL_END	0
385#define TCF_EM_REL_AND	(1<<0)
386#define TCF_EM_REL_OR	(1<<1)
387#define TCF_EM_INVERT	(1<<2)
388#define TCF_EM_SIMPLE	(1<<3)
389
390#define TCF_EM_REL_MASK	3
391#define TCF_EM_REL_VALID(v) (((v) & TCF_EM_REL_MASK) != TCF_EM_REL_MASK)
392
393enum
394{
395	TCF_LAYER_LINK,
396	TCF_LAYER_NETWORK,
397	TCF_LAYER_TRANSPORT,
398	__TCF_LAYER_MAX
399};
400#define TCF_LAYER_MAX (__TCF_LAYER_MAX - 1)
401
402/* Ematch type assignments
403 *   1..32767		Reserved for ematches inside kernel tree
404 *   32768..65535	Free to use, not reliable
405 */
406enum
407{
408	TCF_EM_CONTAINER,
409	TCF_EM_CMP,
410	TCF_EM_NBYTE,
411	TCF_EM_U32,
412	TCF_EM_META,
413	TCF_EM_TEXT,
414	__TCF_EM_MAX
415};
416
417enum
418{
419	TCF_EM_PROG_TC
420};
421
422enum
423{
424	TCF_EM_OPND_EQ,
425	TCF_EM_OPND_GT,
426	TCF_EM_OPND_LT
427};
428
429#endif
430