include/linux/pkt_cls.h

   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