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         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_MAX,
 336 };
 337
 338 #define FLOW_KEY_MAX    (__FLOW_KEY_MAX - 1)
 339
 340 enum {
 341         FLOW_MODE_MAP,
 342         FLOW_MODE_HASH,
 343 };
 344
 345 enum {
 346         TCA_FLOW_UNSPEC,
 347         TCA_FLOW_KEYS,
 348         TCA_FLOW_MODE,
 349         TCA_FLOW_BASECLASS,
 350         TCA_FLOW_RSHIFT,
 351         TCA_FLOW_ADDEND,
 352         TCA_FLOW_MASK,
 353         TCA_FLOW_XOR,
 354         TCA_FLOW_DIVISOR,
 355         TCA_FLOW_ACT,
 356         TCA_FLOW_POLICE,
 357         TCA_FLOW_EMATCHES,
 358         TCA_FLOW_PERTURB,
 359         __TCA_FLOW_MAX
 360 };
 361
 362 #define TCA_FLOW_MAX    (__TCA_FLOW_MAX - 1)
 363
 364 /* Basic filter */
 365
 366 enum {
 367         TCA_BASIC_UNSPEC,
 368         TCA_BASIC_CLASSID,
 369         TCA_BASIC_EMATCHES,
 370         TCA_BASIC_ACT,
 371         TCA_BASIC_POLICE,
 372         __TCA_BASIC_MAX
 373 };
 374
 375 #define TCA_BASIC_MAX (__TCA_BASIC_MAX - 1)
 376
 377
 378 /* Cgroup classifier */
 379
 380 enum {
 381         TCA_CGROUP_UNSPEC,
 382         TCA_CGROUP_ACT,
 383         TCA_CGROUP_POLICE,
 384         TCA_CGROUP_EMATCHES,
 385         __TCA_CGROUP_MAX,
 386 };
 387
 388 #define TCA_CGROUP_MAX (__TCA_CGROUP_MAX - 1)
 389
 390 /* Extended Matches */
 391
 392 struct tcf_ematch_tree_hdr {
 393         __u16           nmatches;
 394         __u16           progid;
 395 };
 396
 397 enum {
 398         TCA_EMATCH_TREE_UNSPEC,
 399         TCA_EMATCH_TREE_HDR,
 400         TCA_EMATCH_TREE_LIST,
 401         __TCA_EMATCH_TREE_MAX
 402 };
 403 #define TCA_EMATCH_TREE_MAX (__TCA_EMATCH_TREE_MAX - 1)
 404
 405 struct tcf_ematch_hdr {
 406         __u16           matchid;
 407         __u16           kind;
 408         __u16           flags;
 409         __u16           pad; /* currently unused */
 410 };
 411
 412 /*  0                   1
 413  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
 414  * +-----------------------+-+-+---+
 415  * |         Unused        |S|I| R |
 416  * +-----------------------+-+-+---+
 417  *
 418  * R(2) ::= relation to next ematch
 419  *          where: 0 0 END (last ematch)
 420  *                 0 1 AND
 421  *                 1 0 OR
 422  *                 1 1 Unused (invalid)
 423  * I(1) ::= invert result
 424  * S(1) ::= simple payload
 425  */
 426 #define TCF_EM_REL_END  0
 427 #define TCF_EM_REL_AND  (1<<0)
 428 #define TCF_EM_REL_OR   (1<<1)
 429 #define TCF_EM_INVERT   (1<<2)
 430 #define TCF_EM_SIMPLE   (1<<3)
 431
 432 #define TCF_EM_REL_MASK 3
 433 #define TCF_EM_REL_VALID(v) (((v) & TCF_EM_REL_MASK) != TCF_EM_REL_MASK)
 434
 435 enum {
 436         TCF_LAYER_LINK,
 437         TCF_LAYER_NETWORK,
 438         TCF_LAYER_TRANSPORT,
 439         __TCF_LAYER_MAX
 440 };
 441 #define TCF_LAYER_MAX (__TCF_LAYER_MAX - 1)
 442
 443 /* Ematch type assignments
 444  *   1..32767           Reserved for ematches inside kernel tree
 445  *   32768..65535       Free to use, not reliable
 446  */
 447 #define TCF_EM_CONTAINER        0
 448 #define TCF_EM_CMP              1
 449 #define TCF_EM_NBYTE            2
 450 #define TCF_EM_U32              3
 451 #define TCF_EM_META             4
 452 #define TCF_EM_TEXT             5
 453 #define        TCF_EM_VLAN              6
 454 #define TCF_EM_MAX              6
 455
 456 enum {
 457         TCF_EM_PROG_TC
 458 };
 459
 460 enum {
 461         TCF_EM_OPND_EQ,
 462         TCF_EM_OPND_GT,
 463         TCF_EM_OPND_LT
 464 };
 465
 466 #endif