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TOMOYO Linux Cross Reference
Linux/include/linux/pkt_cls.h

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  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 {
 80         TCA_ACT_UNSPEC,
 81         TCA_ACT_KIND,
 82         TCA_ACT_OPTIONS,
 83         TCA_ACT_INDEX,
 84         TCA_ACT_STATS,
 85         __TCA_ACT_MAX
 86 };
 87 
 88 #define TCA_ACT_MAX __TCA_ACT_MAX
 89 #define TCA_OLD_COMPAT (TCA_ACT_MAX+1)
 90 #define TCA_ACT_MAX_PRIO 32
 91 #define TCA_ACT_BIND    1
 92 #define TCA_ACT_NOBIND  0
 93 #define TCA_ACT_UNBIND  1
 94 #define TCA_ACT_NOUNBIND        0
 95 #define TCA_ACT_REPLACE         1
 96 #define TCA_ACT_NOREPLACE       0
 97 #define MAX_REC_LOOP 4
 98 #define MAX_RED_LOOP 4
 99 
100 #define TC_ACT_UNSPEC   (-1)
101 #define TC_ACT_OK               0
102 #define TC_ACT_RECLASSIFY       1
103 #define TC_ACT_SHOT             2
104 #define TC_ACT_PIPE             3
105 #define TC_ACT_STOLEN           4
106 #define TC_ACT_QUEUED           5
107 #define TC_ACT_REPEAT           6
108 #define TC_ACT_JUMP             0x10000000
109 
110 /* Action type identifiers*/
111 enum
112 {
113         TCA_ID_UNSPEC=0,
114         TCA_ID_POLICE=1,
115         /* other actions go here */
116         __TCA_ID_MAX=255
117 };
118 
119 #define TCA_ID_MAX __TCA_ID_MAX
120 
121 struct tc_police
122 {
123         __u32                   index;
124         int                     action;
125 #define TC_POLICE_UNSPEC        TC_ACT_UNSPEC
126 #define TC_POLICE_OK            TC_ACT_OK
127 #define TC_POLICE_RECLASSIFY    TC_ACT_RECLASSIFY
128 #define TC_POLICE_SHOT          TC_ACT_SHOT
129 #define TC_POLICE_PIPE          TC_ACT_PIPE
130 
131         __u32                   limit;
132         __u32                   burst;
133         __u32                   mtu;
134         struct tc_ratespec      rate;
135         struct tc_ratespec      peakrate;
136         int                     refcnt;
137         int                     bindcnt;
138         __u32                   capab;
139 };
140 
141 struct tcf_t
142 {
143         __u64   install;
144         __u64   lastuse;
145         __u64   expires;
146 };
147 
148 struct tc_cnt
149 {
150         int                   refcnt; 
151         int                   bindcnt;
152 };
153 
154 #define tc_gen \
155         __u32                 index; \
156         __u32                 capab; \
157         int                   action; \
158         int                   refcnt; \
159         int                   bindcnt
160 
161 enum
162 {
163         TCA_POLICE_UNSPEC,
164         TCA_POLICE_TBF,
165         TCA_POLICE_RATE,
166         TCA_POLICE_PEAKRATE,
167         TCA_POLICE_AVRATE,
168         TCA_POLICE_RESULT,
169         __TCA_POLICE_MAX
170 #define TCA_POLICE_RESULT TCA_POLICE_RESULT
171 };
172 
173 #define TCA_POLICE_MAX (__TCA_POLICE_MAX - 1)
174 
175 /* U32 filters */
176 
177 #define TC_U32_HTID(h) ((h)&0xFFF00000)
178 #define TC_U32_USERHTID(h) (TC_U32_HTID(h)>>20)
179 #define TC_U32_HASH(h) (((h)>>12)&0xFF)
180 #define TC_U32_NODE(h) ((h)&0xFFF)
181 #define TC_U32_KEY(h) ((h)&0xFFFFF)
182 #define TC_U32_UNSPEC   0
183 #define TC_U32_ROOT     (0xFFF00000)
184 
185 enum
186 {
187         TCA_U32_UNSPEC,
188         TCA_U32_CLASSID,
189         TCA_U32_HASH,
190         TCA_U32_LINK,
191         TCA_U32_DIVISOR,
192         TCA_U32_SEL,
193         TCA_U32_POLICE,
194         TCA_U32_ACT,   
195         TCA_U32_INDEV,
196         TCA_U32_PCNT,
197         TCA_U32_MARK,
198         __TCA_U32_MAX
199 };
200 
201 #define TCA_U32_MAX (__TCA_U32_MAX - 1)
202 
203 struct tc_u32_key
204 {
205         __be32          mask;
206         __be32          val;
207         int             off;
208         int             offmask;
209 };
210 
211 struct tc_u32_sel
212 {
213         unsigned char           flags;
214         unsigned char           offshift;
215         unsigned char           nkeys;
216 
217         __be16                  offmask;
218         __u16                   off;
219         short                   offoff;
220 
221         short                   hoff;
222         __be32                  hmask;
223         struct tc_u32_key       keys[0];
224 };
225 
226 struct tc_u32_mark
227 {
228         __u32           val;
229         __u32           mask;
230         __u32           success;
231 };
232 
233 struct tc_u32_pcnt
234 {
235         __u64 rcnt;
236         __u64 rhit;
237         __u64 kcnts[0];
238 };
239 
240 /* Flags */
241 
242 #define TC_U32_TERMINAL         1
243 #define TC_U32_OFFSET           2
244 #define TC_U32_VAROFFSET        4
245 #define TC_U32_EAT              8
246 
247 #define TC_U32_MAXDEPTH 8
248 
249 
250 /* RSVP filter */
251 
252 enum
253 {
254         TCA_RSVP_UNSPEC,
255         TCA_RSVP_CLASSID,
256         TCA_RSVP_DST,
257         TCA_RSVP_SRC,
258         TCA_RSVP_PINFO,
259         TCA_RSVP_POLICE,
260         TCA_RSVP_ACT,
261         __TCA_RSVP_MAX
262 };
263 
264 #define TCA_RSVP_MAX (__TCA_RSVP_MAX - 1 )
265 
266 struct tc_rsvp_gpi
267 {
268         __u32   key;
269         __u32   mask;
270         int     offset;
271 };
272 
273 struct tc_rsvp_pinfo
274 {
275         struct tc_rsvp_gpi dpi;
276         struct tc_rsvp_gpi spi;
277         __u8    protocol;
278         __u8    tunnelid;
279         __u8    tunnelhdr;
280         __u8    pad;
281 };
282 
283 /* ROUTE filter */
284 
285 enum
286 {
287         TCA_ROUTE4_UNSPEC,
288         TCA_ROUTE4_CLASSID,
289         TCA_ROUTE4_TO,
290         TCA_ROUTE4_FROM,
291         TCA_ROUTE4_IIF,
292         TCA_ROUTE4_POLICE,
293         TCA_ROUTE4_ACT,
294         __TCA_ROUTE4_MAX
295 };
296 
297 #define TCA_ROUTE4_MAX (__TCA_ROUTE4_MAX - 1)
298 
299 
300 /* FW filter */
301 
302 enum
303 {
304         TCA_FW_UNSPEC,
305         TCA_FW_CLASSID,
306         TCA_FW_POLICE,
307         TCA_FW_INDEV, /*  used by CONFIG_NET_CLS_IND */
308         TCA_FW_ACT, /* used by CONFIG_NET_CLS_ACT */
309         TCA_FW_MASK,
310         __TCA_FW_MAX
311 };
312 
313 #define TCA_FW_MAX (__TCA_FW_MAX - 1)
314 
315 /* TC index filter */
316 
317 enum
318 {
319         TCA_TCINDEX_UNSPEC,
320         TCA_TCINDEX_HASH,
321         TCA_TCINDEX_MASK,
322         TCA_TCINDEX_SHIFT,
323         TCA_TCINDEX_FALL_THROUGH,
324         TCA_TCINDEX_CLASSID,
325         TCA_TCINDEX_POLICE,
326         TCA_TCINDEX_ACT,
327         __TCA_TCINDEX_MAX
328 };
329 
330 #define TCA_TCINDEX_MAX     (__TCA_TCINDEX_MAX - 1)
331 
332 /* Flow filter */
333 
334 enum
335 {
336         FLOW_KEY_SRC,
337         FLOW_KEY_DST,
338         FLOW_KEY_PROTO,
339         FLOW_KEY_PROTO_SRC,
340         FLOW_KEY_PROTO_DST,
341         FLOW_KEY_IIF,
342         FLOW_KEY_PRIORITY,
343         FLOW_KEY_MARK,
344         FLOW_KEY_NFCT,
345         FLOW_KEY_NFCT_SRC,
346         FLOW_KEY_NFCT_DST,
347         FLOW_KEY_NFCT_PROTO_SRC,
348         FLOW_KEY_NFCT_PROTO_DST,
349         FLOW_KEY_RTCLASSID,
350         FLOW_KEY_SKUID,
351         FLOW_KEY_SKGID,
352         FLOW_KEY_VLAN_TAG,
353         __FLOW_KEY_MAX,
354 };
355 
356 #define FLOW_KEY_MAX    (__FLOW_KEY_MAX - 1)
357 
358 enum
359 {
360         FLOW_MODE_MAP,
361         FLOW_MODE_HASH,
362 };
363 
364 enum
365 {
366         TCA_FLOW_UNSPEC,
367         TCA_FLOW_KEYS,
368         TCA_FLOW_MODE,
369         TCA_FLOW_BASECLASS,
370         TCA_FLOW_RSHIFT,
371         TCA_FLOW_ADDEND,
372         TCA_FLOW_MASK,
373         TCA_FLOW_XOR,
374         TCA_FLOW_DIVISOR,
375         TCA_FLOW_ACT,
376         TCA_FLOW_POLICE,
377         TCA_FLOW_EMATCHES,
378         TCA_FLOW_PERTURB,
379         __TCA_FLOW_MAX
380 };
381 
382 #define TCA_FLOW_MAX    (__TCA_FLOW_MAX - 1)
383 
384 /* Basic filter */
385 
386 enum
387 {
388         TCA_BASIC_UNSPEC,
389         TCA_BASIC_CLASSID,
390         TCA_BASIC_EMATCHES,
391         TCA_BASIC_ACT,
392         TCA_BASIC_POLICE,
393         __TCA_BASIC_MAX
394 };
395 
396 #define TCA_BASIC_MAX (__TCA_BASIC_MAX - 1)
397 
398 
399 /* Cgroup classifier */
400 
401 enum
402 {
403         TCA_CGROUP_UNSPEC,
404         TCA_CGROUP_ACT,
405         TCA_CGROUP_POLICE,
406         TCA_CGROUP_EMATCHES,
407         __TCA_CGROUP_MAX,
408 };
409 
410 #define TCA_CGROUP_MAX (__TCA_CGROUP_MAX - 1)
411 
412 /* Extended Matches */
413 
414 struct tcf_ematch_tree_hdr
415 {
416         __u16           nmatches;
417         __u16           progid;
418 };
419 
420 enum
421 {
422         TCA_EMATCH_TREE_UNSPEC,
423         TCA_EMATCH_TREE_HDR,
424         TCA_EMATCH_TREE_LIST,
425         __TCA_EMATCH_TREE_MAX
426 };
427 #define TCA_EMATCH_TREE_MAX (__TCA_EMATCH_TREE_MAX - 1)
428 
429 struct tcf_ematch_hdr
430 {
431         __u16           matchid;
432         __u16           kind;
433         __u16           flags;
434         __u16           pad; /* currently unused */
435 };
436 
437 /*  0                   1
438  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 
439  * +-----------------------+-+-+---+
440  * |         Unused        |S|I| R |
441  * +-----------------------+-+-+---+
442  *
443  * R(2) ::= relation to next ematch
444  *          where: 0 0 END (last ematch)
445  *                 0 1 AND
446  *                 1 0 OR
447  *                 1 1 Unused (invalid)
448  * I(1) ::= invert result
449  * S(1) ::= simple payload
450  */
451 #define TCF_EM_REL_END  0
452 #define TCF_EM_REL_AND  (1<<0)
453 #define TCF_EM_REL_OR   (1<<1)
454 #define TCF_EM_INVERT   (1<<2)
455 #define TCF_EM_SIMPLE   (1<<3)
456 
457 #define TCF_EM_REL_MASK 3
458 #define TCF_EM_REL_VALID(v) (((v) & TCF_EM_REL_MASK) != TCF_EM_REL_MASK)
459 
460 enum
461 {
462         TCF_LAYER_LINK,
463         TCF_LAYER_NETWORK,
464         TCF_LAYER_TRANSPORT,
465         __TCF_LAYER_MAX
466 };
467 #define TCF_LAYER_MAX (__TCF_LAYER_MAX - 1)
468 
469 /* Ematch type assignments
470  *   1..32767           Reserved for ematches inside kernel tree
471  *   32768..65535       Free to use, not reliable
472  */
473 #define TCF_EM_CONTAINER        0
474 #define TCF_EM_CMP              1
475 #define TCF_EM_NBYTE            2
476 #define TCF_EM_U32              3
477 #define TCF_EM_META             4
478 #define TCF_EM_TEXT             5
479 #define        TCF_EM_VLAN              6
480 #define TCF_EM_MAX              6
481 
482 enum
483 {
484         TCF_EM_PROG_TC
485 };
486 
487 enum
488 {
489         TCF_EM_OPND_EQ,
490         TCF_EM_OPND_GT,
491         TCF_EM_OPND_LT
492 };
493 
494 #endif
495 

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