pkt_cls.h revision d639d9d18b2ef5a43cda5424830005333acfb288 
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_MAX
84};
85
86#define TCA_ACT_MAX __TCA_ACT_MAX
87#define TCA_OLD_COMPAT (TCA_ACT_MAX+1)
88#define TCA_ACT_MAX_PRIO 32
89#define TCA_ACT_BIND	1
90#define TCA_ACT_NOBIND	0
91#define TCA_ACT_UNBIND	1
92#define TCA_ACT_NOUNBIND	0
93#define TCA_ACT_REPLACE		1
94#define TCA_ACT_NOREPLACE	0
95#define MAX_REC_LOOP 4
96#define MAX_RED_LOOP 4
97
98#define TC_ACT_UNSPEC	(-1)
99#define TC_ACT_OK		0
100#define TC_ACT_RECLASSIFY	1
101#define TC_ACT_SHOT		2
102#define TC_ACT_PIPE		3
103#define TC_ACT_STOLEN		4
104#define TC_ACT_QUEUED		5
105#define TC_ACT_REPEAT		6
106#define TC_ACT_JUMP		0x10000000
107
108/* Action type identifiers*/
109enum
110{
111	TCA_ID_UNSPEC=0,
112	TCA_ID_POLICE=1,
113	/* other actions go here */
114	__TCA_ID_MAX=255
115};
116
117#define TCA_ID_MAX __TCA_ID_MAX
118
119struct tc_police
120{
121	__u32			index;
122	int			action;
123#define TC_POLICE_UNSPEC	TC_ACT_UNSPEC
124#define TC_POLICE_OK		TC_ACT_OK
125#define TC_POLICE_RECLASSIFY	TC_ACT_RECLASSIFY
126#define TC_POLICE_SHOT		TC_ACT_SHOT
127#define TC_POLICE_PIPE		TC_ACT_PIPE
128
129	__u32			limit;
130	__u32			burst;
131	__u32			mtu;
132	struct tc_ratespec	rate;
133	struct tc_ratespec	peakrate;
134	int 			refcnt;
135	int 			bindcnt;
136	__u32			capab;
137};
138
139struct tcf_t
140{
141	__u64   install;
142	__u64   lastuse;
143	__u64   expires;
144};
145
146struct tc_cnt
147{
148	int                   refcnt;
149	int                   bindcnt;
150};
151
152#define tc_gen \
153	__u32                 index; \
154	__u32                 capab; \
155	int                   action; \
156	int                   refcnt; \
157	int                   bindcnt
158
159enum
160{
161	TCA_POLICE_UNSPEC,
162	TCA_POLICE_TBF,
163	TCA_POLICE_RATE,
164	TCA_POLICE_PEAKRATE,
165	TCA_POLICE_AVRATE,
166	TCA_POLICE_RESULT,
167	__TCA_POLICE_MAX
168#define TCA_POLICE_RESULT TCA_POLICE_RESULT
169};
170
171#define TCA_POLICE_MAX (__TCA_POLICE_MAX - 1)
172
173/* U32 filters */
174
175#define TC_U32_HTID(h) ((h)&0xFFF00000)
176#define TC_U32_USERHTID(h) (TC_U32_HTID(h)>>20)
177#define TC_U32_HASH(h) (((h)>>12)&0xFF)
178#define TC_U32_NODE(h) ((h)&0xFFF)
179#define TC_U32_KEY(h) ((h)&0xFFFFF)
180#define TC_U32_UNSPEC	0
181#define TC_U32_ROOT	(0xFFF00000)
182
183enum
184{
185	TCA_U32_UNSPEC,
186	TCA_U32_CLASSID,
187	TCA_U32_HASH,
188	TCA_U32_LINK,
189	TCA_U32_DIVISOR,
190	TCA_U32_SEL,
191	TCA_U32_POLICE,
192	TCA_U32_ACT,
193	TCA_U32_INDEV,
194	TCA_U32_PCNT,
195	TCA_U32_MARK,
196	__TCA_U32_MAX
197};
198
199#define TCA_U32_MAX (__TCA_U32_MAX - 1)
200
201struct tc_u32_key
202{
203	__u32		mask;
204	__u32		val;
205	int		off;
206	int		offmask;
207};
208
209struct tc_u32_sel
210{
211	unsigned char		flags;
212	unsigned char		offshift;
213	unsigned char		nkeys;
214
215	__u16			offmask;
216	__u16			off;
217	short			offoff;
218
219	short			hoff;
220	__u32			hmask;
221	struct tc_u32_key	keys[0];
222};
223
224struct tc_u32_mark
225{
226	__u32		val;
227	__u32		mask;
228	__u32		success;
229};
230
231struct tc_u32_pcnt
232{
233	__u64 rcnt;
234	__u64 rhit;
235	__u64 kcnts[0];
236};
237
238/* Flags */
239
240#define TC_U32_TERMINAL		1
241#define TC_U32_OFFSET		2
242#define TC_U32_VAROFFSET	4
243#define TC_U32_EAT		8
244
245#define TC_U32_MAXDEPTH 8
246
247
248/* RSVP filter */
249
250enum
251{
252	TCA_RSVP_UNSPEC,
253	TCA_RSVP_CLASSID,
254	TCA_RSVP_DST,
255	TCA_RSVP_SRC,
256	TCA_RSVP_PINFO,
257	TCA_RSVP_POLICE,
258	TCA_RSVP_ACT,
259	__TCA_RSVP_MAX
260};
261
262#define TCA_RSVP_MAX (__TCA_RSVP_MAX - 1 )
263
264struct tc_rsvp_gpi
265{
266	__u32	key;
267	__u32	mask;
268	int	offset;
269};
270
271struct tc_rsvp_pinfo
272{
273	struct tc_rsvp_gpi dpi;
274	struct tc_rsvp_gpi spi;
275	__u8	protocol;
276	__u8	tunnelid;
277	__u8	tunnelhdr;
278};
279
280/* ROUTE filter */
281
282enum
283{
284	TCA_ROUTE4_UNSPEC,
285	TCA_ROUTE4_CLASSID,
286	TCA_ROUTE4_TO,
287	TCA_ROUTE4_FROM,
288	TCA_ROUTE4_IIF,
289	TCA_ROUTE4_POLICE,
290	TCA_ROUTE4_ACT,
291	__TCA_ROUTE4_MAX
292};
293
294#define TCA_ROUTE4_MAX (__TCA_ROUTE4_MAX - 1)
295
296
297/* FW filter */
298
299enum
300{
301	TCA_FW_UNSPEC,
302	TCA_FW_CLASSID,
303	TCA_FW_POLICE,
304	TCA_FW_INDEV, /*  used by CONFIG_NET_CLS_IND */
305	TCA_FW_ACT, /* used by CONFIG_NET_CLS_ACT */
306	__TCA_FW_MAX
307};
308
309#define TCA_FW_MAX (__TCA_FW_MAX - 1)
310
311/* TC index filter */
312
313enum
314{
315	TCA_TCINDEX_UNSPEC,
316	TCA_TCINDEX_HASH,
317	TCA_TCINDEX_MASK,
318	TCA_TCINDEX_SHIFT,
319	TCA_TCINDEX_FALL_THROUGH,
320	TCA_TCINDEX_CLASSID,
321	TCA_TCINDEX_POLICE,
322	TCA_TCINDEX_ACT,
323	__TCA_TCINDEX_MAX
324};
325
326#define TCA_TCINDEX_MAX     (__TCA_TCINDEX_MAX - 1)
327
328/* Basic filter */
329
330enum
331{
332	TCA_BASIC_UNSPEC,
333	TCA_BASIC_CLASSID,
334	TCA_BASIC_EMATCHES,
335	TCA_BASIC_ACT,
336	TCA_BASIC_POLICE,
337	__TCA_BASIC_MAX
338};
339
340#define TCA_BASIC_MAX (__TCA_BASIC_MAX - 1)
341
342/* Extended Matches */
343
344struct tcf_ematch_tree_hdr
345{
346	__u16		nmatches;
347	__u16		progid;
348};
349
350enum
351{
352	TCA_EMATCH_TREE_UNSPEC,
353	TCA_EMATCH_TREE_HDR,
354	TCA_EMATCH_TREE_LIST,
355	__TCA_EMATCH_TREE_MAX
356};
357#define TCA_EMATCH_TREE_MAX (__TCA_EMATCH_TREE_MAX - 1)
358
359struct tcf_ematch_hdr
360{
361	__u16		matchid;
362	__u16		kind;
363	__u16		flags;
364	__u16		pad; /* currently unused */
365};
366
367/*  0                   1
368 *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
369 * +-----------------------+-+-+---+
370 * |         Unused        |S|I| R |
371 * +-----------------------+-+-+---+
372 *
373 * R(2) ::= relation to next ematch
374 *          where: 0 0 END (last ematch)
375 *                 0 1 AND
376 *                 1 0 OR
377 *                 1 1 Unused (invalid)
378 * I(1) ::= invert result
379 * S(1) ::= simple payload
380 */
381#define TCF_EM_REL_END	0
382#define TCF_EM_REL_AND	(1<<0)
383#define TCF_EM_REL_OR	(1<<1)
384#define TCF_EM_INVERT	(1<<2)
385#define TCF_EM_SIMPLE	(1<<3)
386
387#define TCF_EM_REL_MASK	3
388#define TCF_EM_REL_VALID(v) (((v) & TCF_EM_REL_MASK) != TCF_EM_REL_MASK)
389
390enum
391{
392	TCF_LAYER_LINK,
393	TCF_LAYER_NETWORK,
394	TCF_LAYER_TRANSPORT,
395	__TCF_LAYER_MAX
396};
397#define TCF_LAYER_MAX (__TCF_LAYER_MAX - 1)
398
399/* Ematch type assignments
400 *   1..32767		Reserved for ematches inside kernel tree
401 *   32768..65535	Free to use, not reliable
402 */
403enum
404{
405	TCF_EM_CONTAINER,
406	TCF_EM_CMP,
407	TCF_EM_NBYTE,
408	TCF_EM_U32,
409	TCF_EM_META,
410	__TCF_EM_MAX
411};
412
413enum
414{
415	TCF_EM_PROG_TC
416};
417
418enum
419{
420	TCF_EM_OPND_EQ,
421	TCF_EM_OPND_GT,
422	TCF_EM_OPND_LT
423};
424
425#endif
426