1 #ifndef __LINUX_PKT_CLS_H
2 #define __LINUX_PKT_CLS_H
3 
4 #include <linux/types.h>
5 #include <linux/pkt_sched.h>
6 
7 /* I think i could have done better macros ; for now this is stolen from
8  * some arch/mips code - jhs
9 */
10 #define _TC_MAKE32(x) ((x))
11 
12 #define _TC_MAKEMASK1(n) (_TC_MAKE32(1) << _TC_MAKE32(n))
13 #define _TC_MAKEMASK(v,n) (_TC_MAKE32((_TC_MAKE32(1)<<(v))-1) << _TC_MAKE32(n))
14 #define _TC_MAKEVALUE(v,n) (_TC_MAKE32(v) << _TC_MAKE32(n))
15 #define _TC_GETVALUE(v,n,m) ((_TC_MAKE32(v) & _TC_MAKE32(m)) >> _TC_MAKE32(n))
16 
17 /* verdict bit breakdown
18  *
19 bit 0: when set -> this packet has been munged already
20 
21 bit 1: when set -> It is ok to munge this packet
22 
23 bit 2,3,4,5: Reclassify counter - sort of reverse TTL - if exceeded
24 assume loop
25 
26 bit 6,7: Where this packet was last seen
27 0: Above the transmit example at the socket level
28 1: on the Ingress
29 2: on the Egress
30 
31 bit 8: when set --> Request not to classify on ingress.
32 
33 bits 9,10,11: redirect counter -  redirect TTL. Loop avoidance
34 
35  *
36  * */
37 
38 #define TC_MUNGED          _TC_MAKEMASK1(0)
39 #define SET_TC_MUNGED(v)   ( TC_MUNGED | (v & ~TC_MUNGED))
40 #define CLR_TC_MUNGED(v)   ( v & ~TC_MUNGED)
41 
42 #define TC_OK2MUNGE        _TC_MAKEMASK1(1)
43 #define SET_TC_OK2MUNGE(v)   ( TC_OK2MUNGE | (v & ~TC_OK2MUNGE))
44 #define CLR_TC_OK2MUNGE(v)   ( v & ~TC_OK2MUNGE)
45 
46 #define S_TC_VERD          _TC_MAKE32(2)
47 #define M_TC_VERD          _TC_MAKEMASK(4,S_TC_VERD)
48 #define G_TC_VERD(x)       _TC_GETVALUE(x,S_TC_VERD,M_TC_VERD)
49 #define V_TC_VERD(x)       _TC_MAKEVALUE(x,S_TC_VERD)
50 #define SET_TC_VERD(v,n)   ((V_TC_VERD(n)) | (v & ~M_TC_VERD))
51 
52 #define S_TC_FROM          _TC_MAKE32(6)
53 #define M_TC_FROM          _TC_MAKEMASK(2,S_TC_FROM)
54 #define G_TC_FROM(x)       _TC_GETVALUE(x,S_TC_FROM,M_TC_FROM)
55 #define V_TC_FROM(x)       _TC_MAKEVALUE(x,S_TC_FROM)
56 #define SET_TC_FROM(v,n)   ((V_TC_FROM(n)) | (v & ~M_TC_FROM))
57 #define AT_STACK	0x0
58 #define AT_INGRESS	0x1
59 #define AT_EGRESS	0x2
60 
61 #define TC_NCLS          _TC_MAKEMASK1(8)
62 #define SET_TC_NCLS(v)   ( TC_NCLS | (v & ~TC_NCLS))
63 #define CLR_TC_NCLS(v)   ( v & ~TC_NCLS)
64 
65 #define S_TC_RTTL          _TC_MAKE32(9)
66 #define M_TC_RTTL          _TC_MAKEMASK(3,S_TC_RTTL)
67 #define G_TC_RTTL(x)       _TC_GETVALUE(x,S_TC_RTTL,M_TC_RTTL)
68 #define V_TC_RTTL(x)       _TC_MAKEVALUE(x,S_TC_RTTL)
69 #define SET_TC_RTTL(v,n)   ((V_TC_RTTL(n)) | (v & ~M_TC_RTTL))
70 
71 #define S_TC_AT          _TC_MAKE32(12)
72 #define M_TC_AT          _TC_MAKEMASK(2,S_TC_AT)
73 #define G_TC_AT(x)       _TC_GETVALUE(x,S_TC_AT,M_TC_AT)
74 #define V_TC_AT(x)       _TC_MAKEVALUE(x,S_TC_AT)
75 #define SET_TC_AT(v,n)   ((V_TC_AT(n)) | (v & ~M_TC_AT))
76 
77 /* Action attributes */
78 enum {
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*/
110 enum {
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 
119 struct tc_police {
120 	__u32			index;
121 	int			action;
122 #define TC_POLICE_UNSPEC	TC_ACT_UNSPEC
123 #define TC_POLICE_OK		TC_ACT_OK
124 #define TC_POLICE_RECLASSIFY	TC_ACT_RECLASSIFY
125 #define TC_POLICE_SHOT		TC_ACT_SHOT
126 #define TC_POLICE_PIPE		TC_ACT_PIPE
127 
128 	__u32			limit;
129 	__u32			burst;
130 	__u32			mtu;
131 	struct tc_ratespec	rate;
132 	struct tc_ratespec	peakrate;
133 	int 			refcnt;
134 	int 			bindcnt;
135 	__u32			capab;
136 };
137 
138 struct tcf_t {
139 	__u64   install;
140 	__u64   lastuse;
141 	__u64   expires;
142 };
143 
144 struct tc_cnt {
145 	int                   refcnt;
146 	int                   bindcnt;
147 };
148 
149 #define tc_gen \
150 	__u32                 index; \
151 	__u32                 capab; \
152 	int                   action; \
153 	int                   refcnt; \
154 	int                   bindcnt
155 
156 enum {
157 	TCA_POLICE_UNSPEC,
158 	TCA_POLICE_TBF,
159 	TCA_POLICE_RATE,
160 	TCA_POLICE_PEAKRATE,
161 	TCA_POLICE_AVRATE,
162 	TCA_POLICE_RESULT,
163 	__TCA_POLICE_MAX
164 #define TCA_POLICE_RESULT TCA_POLICE_RESULT
165 };
166 
167 #define TCA_POLICE_MAX (__TCA_POLICE_MAX - 1)
168 
169 /* U32 filters */
170 
171 #define TC_U32_HTID(h) ((h)&0xFFF00000)
172 #define TC_U32_USERHTID(h) (TC_U32_HTID(h)>>20)
173 #define TC_U32_HASH(h) (((h)>>12)&0xFF)
174 #define TC_U32_NODE(h) ((h)&0xFFF)
175 #define TC_U32_KEY(h) ((h)&0xFFFFF)
176 #define TC_U32_UNSPEC	0
177 #define TC_U32_ROOT	(0xFFF00000)
178 
179 enum {
180 	TCA_U32_UNSPEC,
181 	TCA_U32_CLASSID,
182 	TCA_U32_HASH,
183 	TCA_U32_LINK,
184 	TCA_U32_DIVISOR,
185 	TCA_U32_SEL,
186 	TCA_U32_POLICE,
187 	TCA_U32_ACT,
188 	TCA_U32_INDEV,
189 	TCA_U32_PCNT,
190 	TCA_U32_MARK,
191 	__TCA_U32_MAX
192 };
193 
194 #define TCA_U32_MAX (__TCA_U32_MAX - 1)
195 
196 struct tc_u32_key {
197 	__be32		mask;
198 	__be32		val;
199 	int		off;
200 	int		offmask;
201 };
202 
203 struct tc_u32_sel {
204 	unsigned char		flags;
205 	unsigned char		offshift;
206 	unsigned char		nkeys;
207 
208 	__be16			offmask;
209 	__u16			off;
210 	short			offoff;
211 
212 	short			hoff;
213 	__be32			hmask;
214 	struct tc_u32_key	keys[0];
215 };
216 
217 struct tc_u32_mark {
218 	__u32		val;
219 	__u32		mask;
220 	__u32		success;
221 };
222 
223 struct tc_u32_pcnt {
224 	__u64 rcnt;
225 	__u64 rhit;
226 	__u64 kcnts[0];
227 };
228 
229 /* Flags */
230 
231 #define TC_U32_TERMINAL		1
232 #define TC_U32_OFFSET		2
233 #define TC_U32_VAROFFSET	4
234 #define TC_U32_EAT		8
235 
236 #define TC_U32_MAXDEPTH 8
237 
238 
239 /* RSVP filter */
240 
241 enum {
242 	TCA_RSVP_UNSPEC,
243 	TCA_RSVP_CLASSID,
244 	TCA_RSVP_DST,
245 	TCA_RSVP_SRC,
246 	TCA_RSVP_PINFO,
247 	TCA_RSVP_POLICE,
248 	TCA_RSVP_ACT,
249 	__TCA_RSVP_MAX
250 };
251 
252 #define TCA_RSVP_MAX (__TCA_RSVP_MAX - 1 )
253 
254 struct tc_rsvp_gpi {
255 	__u32	key;
256 	__u32	mask;
257 	int	offset;
258 };
259 
260 struct tc_rsvp_pinfo {
261 	struct tc_rsvp_gpi dpi;
262 	struct tc_rsvp_gpi spi;
263 	__u8	protocol;
264 	__u8	tunnelid;
265 	__u8	tunnelhdr;
266 	__u8	pad;
267 };
268 
269 /* ROUTE filter */
270 
271 enum {
272 	TCA_ROUTE4_UNSPEC,
273 	TCA_ROUTE4_CLASSID,
274 	TCA_ROUTE4_TO,
275 	TCA_ROUTE4_FROM,
276 	TCA_ROUTE4_IIF,
277 	TCA_ROUTE4_POLICE,
278 	TCA_ROUTE4_ACT,
279 	__TCA_ROUTE4_MAX
280 };
281 
282 #define TCA_ROUTE4_MAX (__TCA_ROUTE4_MAX - 1)
283 
284 
285 /* FW filter */
286 
287 enum {
288 	TCA_FW_UNSPEC,
289 	TCA_FW_CLASSID,
290 	TCA_FW_POLICE,
291 	TCA_FW_INDEV, /*  used by CONFIG_NET_CLS_IND */
292 	TCA_FW_ACT, /* used by CONFIG_NET_CLS_ACT */
293 	TCA_FW_MASK,
294 	__TCA_FW_MAX
295 };
296 
297 #define TCA_FW_MAX (__TCA_FW_MAX - 1)
298 
299 /* TC index filter */
300 
301 enum {
302 	TCA_TCINDEX_UNSPEC,
303 	TCA_TCINDEX_HASH,
304 	TCA_TCINDEX_MASK,
305 	TCA_TCINDEX_SHIFT,
306 	TCA_TCINDEX_FALL_THROUGH,
307 	TCA_TCINDEX_CLASSID,
308 	TCA_TCINDEX_POLICE,
309 	TCA_TCINDEX_ACT,
310 	__TCA_TCINDEX_MAX
311 };
312 
313 #define TCA_TCINDEX_MAX     (__TCA_TCINDEX_MAX - 1)
314 
315 /* Flow filter */
316 
317 enum {
318 	FLOW_KEY_SRC,
319 	FLOW_KEY_DST,
320 	FLOW_KEY_PROTO,
321 	FLOW_KEY_PROTO_SRC,
322 	FLOW_KEY_PROTO_DST,
323 	FLOW_KEY_IIF,
324 	FLOW_KEY_PRIORITY,
325 	FLOW_KEY_MARK,
326 	FLOW_KEY_NFCT,
327 	FLOW_KEY_NFCT_SRC,
328 	FLOW_KEY_NFCT_DST,
329 	FLOW_KEY_NFCT_PROTO_SRC,
330 	FLOW_KEY_NFCT_PROTO_DST,
331 	FLOW_KEY_RTCLASSID,
332 	FLOW_KEY_SKUID,
333 	FLOW_KEY_SKGID,
334 	FLOW_KEY_VLAN_TAG,
335 	FLOW_KEY_RXHASH,
336 	__FLOW_KEY_MAX,
337 };
338 
339 #define FLOW_KEY_MAX	(__FLOW_KEY_MAX - 1)
340 
341 enum {
342 	FLOW_MODE_MAP,
343 	FLOW_MODE_HASH,
344 };
345 
346 enum {
347 	TCA_FLOW_UNSPEC,
348 	TCA_FLOW_KEYS,
349 	TCA_FLOW_MODE,
350 	TCA_FLOW_BASECLASS,
351 	TCA_FLOW_RSHIFT,
352 	TCA_FLOW_ADDEND,
353 	TCA_FLOW_MASK,
354 	TCA_FLOW_XOR,
355 	TCA_FLOW_DIVISOR,
356 	TCA_FLOW_ACT,
357 	TCA_FLOW_POLICE,
358 	TCA_FLOW_EMATCHES,
359 	TCA_FLOW_PERTURB,
360 	__TCA_FLOW_MAX
361 };
362 
363 #define TCA_FLOW_MAX	(__TCA_FLOW_MAX - 1)
364 
365 /* Basic filter */
366 
367 enum {
368 	TCA_BASIC_UNSPEC,
369 	TCA_BASIC_CLASSID,
370 	TCA_BASIC_EMATCHES,
371 	TCA_BASIC_ACT,
372 	TCA_BASIC_POLICE,
373 	__TCA_BASIC_MAX
374 };
375 
376 #define TCA_BASIC_MAX (__TCA_BASIC_MAX - 1)
377 
378 
379 /* Cgroup classifier */
380 
381 enum {
382 	TCA_CGROUP_UNSPEC,
383 	TCA_CGROUP_ACT,
384 	TCA_CGROUP_POLICE,
385 	TCA_CGROUP_EMATCHES,
386 	__TCA_CGROUP_MAX,
387 };
388 
389 #define TCA_CGROUP_MAX (__TCA_CGROUP_MAX - 1)
390 
391 /* Extended Matches */
392 
393 struct tcf_ematch_tree_hdr {
394 	__u16		nmatches;
395 	__u16		progid;
396 };
397 
398 enum {
399 	TCA_EMATCH_TREE_UNSPEC,
400 	TCA_EMATCH_TREE_HDR,
401 	TCA_EMATCH_TREE_LIST,
402 	__TCA_EMATCH_TREE_MAX
403 };
404 #define TCA_EMATCH_TREE_MAX (__TCA_EMATCH_TREE_MAX - 1)
405 
406 struct tcf_ematch_hdr {
407 	__u16		matchid;
408 	__u16		kind;
409 	__u16		flags;
410 	__u16		pad; /* currently unused */
411 };
412 
413 /*  0                   1
414  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
415  * +-----------------------+-+-+---+
416  * |         Unused        |S|I| R |
417  * +-----------------------+-+-+---+
418  *
419  * R(2) ::= relation to next ematch
420  *          where: 0 0 END (last ematch)
421  *                 0 1 AND
422  *                 1 0 OR
423  *                 1 1 Unused (invalid)
424  * I(1) ::= invert result
425  * S(1) ::= simple payload
426  */
427 #define TCF_EM_REL_END	0
428 #define TCF_EM_REL_AND	(1<<0)
429 #define TCF_EM_REL_OR	(1<<1)
430 #define TCF_EM_INVERT	(1<<2)
431 #define TCF_EM_SIMPLE	(1<<3)
432 
433 #define TCF_EM_REL_MASK	3
434 #define TCF_EM_REL_VALID(v) (((v) & TCF_EM_REL_MASK) != TCF_EM_REL_MASK)
435 
436 enum {
437 	TCF_LAYER_LINK,
438 	TCF_LAYER_NETWORK,
439 	TCF_LAYER_TRANSPORT,
440 	__TCF_LAYER_MAX
441 };
442 #define TCF_LAYER_MAX (__TCF_LAYER_MAX - 1)
443 
444 /* Ematch type assignments
445  *   1..32767		Reserved for ematches inside kernel tree
446  *   32768..65535	Free to use, not reliable
447  */
448 #define	TCF_EM_CONTAINER	0
449 #define	TCF_EM_CMP		1
450 #define	TCF_EM_NBYTE		2
451 #define	TCF_EM_U32		3
452 #define	TCF_EM_META		4
453 #define	TCF_EM_TEXT		5
454 #define        TCF_EM_VLAN		6
455 #define	TCF_EM_MAX		6
456 
457 enum {
458 	TCF_EM_PROG_TC
459 };
460 
461 enum {
462 	TCF_EM_OPND_EQ,
463 	TCF_EM_OPND_GT,
464 	TCF_EM_OPND_LT
465 };
466 
467 #endif
468