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 *
  19bit 0: when set -> this packet has been munged already
  20
  21bit 1: when set -> It is ok to munge this packet
  22
  23bit 2,3,4,5: Reclassify counter - sort of reverse TTL - if exceeded
  24assume loop
  25
  26bit 6,7: Where this packet was last seen 
  270: Above the transmit example at the socket level
  281: on the Ingress
  292: on the Egress
  30
  31bit 8: when set --> Request not to classify on ingress. 
  32
  33bits 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 */
  78enum {
  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        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        __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
 138struct tcf_t {
 139        __u64   install;
 140        __u64   lastuse;
 141        __u64   expires;
 142};
 143
 144struct 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
 156enum {
 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
 179enum {
 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
 196struct tc_u32_key {
 197        __be32          mask;
 198        __be32          val;
 199        int             off;
 200        int             offmask;
 201};
 202
 203struct 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
 217struct tc_u32_mark {
 218        __u32           val;
 219        __u32           mask;
 220        __u32           success;
 221};
 222
 223struct 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
 241enum {
 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
 254struct tc_rsvp_gpi {
 255        __u32   key;
 256        __u32   mask;
 257        int     offset;
 258};
 259
 260struct 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
 271enum {
 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
 287enum {
 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
 301enum {
 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
 317enum {
 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
 341enum {
 342        FLOW_MODE_MAP,
 343        FLOW_MODE_HASH,
 344};
 345
 346enum {
 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
 367enum {
 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
 381enum {
 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
 393struct tcf_ematch_tree_hdr {
 394        __u16           nmatches;
 395        __u16           progid;
 396};
 397
 398enum {
 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
 406struct 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
 436enum {
 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_CANID            7
 456#define TCF_EM_IPSET            8
 457#define TCF_EM_MAX              8
 458
 459enum {
 460        TCF_EM_PROG_TC
 461};
 462
 463enum {
 464        TCF_EM_OPND_EQ,
 465        TCF_EM_OPND_GT,
 466        TCF_EM_OPND_LT
 467};
 468
 469#endif
 470
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