include/linux/pkt_cls.h

   1 #ifndef __LINUX_PKT_CLS_H
   2 #define __LINUX_PKT_CLS_H
   3
   4 #include <linux/pkt_sched.h>
   5
   6 /* I think i could have done better macros ; for now this is stolen from
   7  * some arch/mips code - jhs
   8 */
   9 #define _TC_MAKE32(x) ((x))
  10
  11 #define _TC_MAKEMASK1(n) (_TC_MAKE32(1) << _TC_MAKE32(n))
  12 #define _TC_MAKEMASK(v,n) (_TC_MAKE32((_TC_MAKE32(1)<<(v))-1) << _TC_MAKE32(n))
  13 #define _TC_MAKEVALUE(v,n) (_TC_MAKE32(v) << _TC_MAKE32(n))
  14 #define _TC_GETVALUE(v,n,m) ((_TC_MAKE32(v) & _TC_MAKE32(m)) >> _TC_MAKE32(n))
  15
  16 /* verdict bit breakdown
  17  *
  18 bit 0: when set -> this packet has been munged already
  19
  20 bit 1: when set -> It is ok to munge this packet
  21
  22 bit 2,3,4,5: Reclassify counter - sort of reverse TTL - if exceeded
  23 assume loop
  24
  25 bit 6,7: Where this packet was last seen
  26 0: Above the transmit example at the socket level
  27 1: on the Ingress
  28 2: on the Egress
  29
  30 bit 8: when set --> Request not to classify on ingress.
  31
  32 bits 9,10,11: redirect counter -  redirect TTL. Loop avoidance
  33
  34  *
  35  * */
  36
  37 #define TC_MUNGED          _TC_MAKEMASK1(0)
  38 #define SET_TC_MUNGED(v)   ( TC_MUNGED | (v & ~TC_MUNGED))
  39 #define CLR_TC_MUNGED(v)   ( v & ~TC_MUNGED)
  40
  41 #define TC_OK2MUNGE        _TC_MAKEMASK1(1)
  42 #define SET_TC_OK2MUNGE(v)   ( TC_OK2MUNGE | (v & ~TC_OK2MUNGE))
  43 #define CLR_TC_OK2MUNGE(v)   ( v & ~TC_OK2MUNGE)
  44
  45 #define S_TC_VERD          _TC_MAKE32(2)
  46 #define M_TC_VERD          _TC_MAKEMASK(4,S_TC_VERD)
  47 #define G_TC_VERD(x)       _TC_GETVALUE(x,S_TC_VERD,M_TC_VERD)
  48 #define V_TC_VERD(x)       _TC_MAKEVALUE(x,S_TC_VERD)
  49 #define SET_TC_VERD(v,n)   ((V_TC_VERD(n)) | (v & ~M_TC_VERD))
  50
  51 #define S_TC_FROM          _TC_MAKE32(6)
  52 #define M_TC_FROM          _TC_MAKEMASK(2,S_TC_FROM)
  53 #define G_TC_FROM(x)       _TC_GETVALUE(x,S_TC_FROM,M_TC_FROM)
  54 #define V_TC_FROM(x)       _TC_MAKEVALUE(x,S_TC_FROM)
  55 #define SET_TC_FROM(v,n)   ((V_TC_FROM(n)) | (v & ~M_TC_FROM))
  56 #define AT_STACK        0x0
  57 #define AT_INGRESS      0x1
  58 #define AT_EGRESS       0x2
  59
  60 #define TC_NCLS          _TC_MAKEMASK1(8)
  61 #define SET_TC_NCLS(v)   ( TC_NCLS | (v & ~TC_NCLS))
  62 #define CLR_TC_NCLS(v)   ( v & ~TC_NCLS)
  63
  64 #define S_TC_RTTL          _TC_MAKE32(9)
  65 #define M_TC_RTTL          _TC_MAKEMASK(3,S_TC_RTTL)
  66 #define G_TC_RTTL(x)       _TC_GETVALUE(x,S_TC_RTTL,M_TC_RTTL)
  67 #define V_TC_RTTL(x)       _TC_MAKEVALUE(x,S_TC_RTTL)
  68 #define SET_TC_RTTL(v,n)   ((V_TC_RTTL(n)) | (v & ~M_TC_RTTL))
  69
  70 #define S_TC_AT          _TC_MAKE32(12)
  71 #define M_TC_AT          _TC_MAKEMASK(2,S_TC_AT)
  72 #define G_TC_AT(x)       _TC_GETVALUE(x,S_TC_AT,M_TC_AT)
  73 #define V_TC_AT(x)       _TC_MAKEVALUE(x,S_TC_AT)
  74 #define SET_TC_AT(v,n)   ((V_TC_AT(n)) | (v & ~M_TC_AT))
  75
  76 /* Action attributes */
  77 enum
  78 {
  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 {
 112         TCA_ID_UNSPEC=0,
 113         TCA_ID_POLICE=1,
 114         /* other actions go here */
 115         __TCA_ID_MAX=255
 116 };
 117
 118 #define TCA_ID_MAX __TCA_ID_MAX
 119
 120 struct tc_police
 121 {
 122         __u32                   index;
 123         int                     action;
 124 #define TC_POLICE_UNSPEC        TC_ACT_UNSPEC
 125 #define TC_POLICE_OK            TC_ACT_OK
 126 #define TC_POLICE_RECLASSIFY    TC_ACT_RECLASSIFY
 127 #define TC_POLICE_SHOT          TC_ACT_SHOT
 128 #define TC_POLICE_PIPE          TC_ACT_PIPE
 129
 130         __u32                   limit;
 131         __u32                   burst;
 132         __u32                   mtu;
 133         struct tc_ratespec      rate;
 134         struct tc_ratespec      peakrate;
 135         int                     refcnt;
 136         int                     bindcnt;
 137         __u32                   capab;
 138 };
 139
 140 struct tcf_t
 141 {
 142         __u64   install;
 143         __u64   lastuse;
 144         __u64   expires;
 145 };
 146
 147 struct tc_cnt
 148 {
 149         int                   refcnt;
 150         int                   bindcnt;
 151 };
 152
 153 #define tc_gen \
 154         __u32                 index; \
 155         __u32                 capab; \
 156         int                   action; \
 157         int                   refcnt; \
 158         int                   bindcnt
 159
 160 enum
 161 {
 162         TCA_POLICE_UNSPEC,
 163         TCA_POLICE_TBF,
 164         TCA_POLICE_RATE,
 165         TCA_POLICE_PEAKRATE,
 166         TCA_POLICE_AVRATE,
 167         TCA_POLICE_RESULT,
 168         __TCA_POLICE_MAX
 169 #define TCA_POLICE_RESULT TCA_POLICE_RESULT
 170 };
 171
 172 #define TCA_POLICE_MAX (__TCA_POLICE_MAX - 1)
 173
 174 /* U32 filters */
 175
 176 #define TC_U32_HTID(h) ((h)&0xFFF00000)
 177 #define TC_U32_USERHTID(h) (TC_U32_HTID(h)>>20)
 178 #define TC_U32_HASH(h) (((h)>>12)&0xFF)
 179 #define TC_U32_NODE(h) ((h)&0xFFF)
 180 #define TC_U32_KEY(h) ((h)&0xFFFFF)
 181 #define TC_U32_UNSPEC   0
 182 #define TC_U32_ROOT     (0xFFF00000)
 183
 184 enum
 185 {
 186         TCA_U32_UNSPEC,
 187         TCA_U32_CLASSID,
 188         TCA_U32_HASH,
 189         TCA_U32_LINK,
 190         TCA_U32_DIVISOR,
 191         TCA_U32_SEL,
 192         TCA_U32_POLICE,
 193         TCA_U32_ACT,
 194         TCA_U32_INDEV,
 195         TCA_U32_PCNT,
 196         TCA_U32_MARK,
 197         __TCA_U32_MAX
 198 };
 199
 200 #define TCA_U32_MAX (__TCA_U32_MAX - 1)
 201
 202 struct tc_u32_key
 203 {
 204         __u32           mask;
 205         __u32           val;
 206         int             off;
 207         int             offmask;
 208 };
 209
 210 struct tc_u32_sel
 211 {
 212         unsigned char           flags;
 213         unsigned char           offshift;
 214         unsigned char           nkeys;
 215
 216         __u16                   offmask;
 217         __u16                   off;
 218         short                   offoff;
 219
 220         short                   hoff;
 221         __u32                   hmask;
 222         struct tc_u32_key       keys[0];
 223 };
 224
 225 struct tc_u32_mark
 226 {
 227         __u32           val;
 228         __u32           mask;
 229         __u32           success;
 230 };
 231
 232 struct tc_u32_pcnt
 233 {
 234         __u64 rcnt;
 235         __u64 rhit;
 236         __u64 kcnts[0];
 237 };
 238
 239 /* Flags */
 240
 241 #define TC_U32_TERMINAL         1
 242 #define TC_U32_OFFSET           2
 243 #define TC_U32_VAROFFSET        4
 244 #define TC_U32_EAT              8
 245
 246 #define TC_U32_MAXDEPTH 8
 247
 248
 249 /* RSVP filter */
 250
 251 enum
 252 {
 253         TCA_RSVP_UNSPEC,
 254         TCA_RSVP_CLASSID,
 255         TCA_RSVP_DST,
 256         TCA_RSVP_SRC,
 257         TCA_RSVP_PINFO,
 258         TCA_RSVP_POLICE,
 259         TCA_RSVP_ACT,
 260         __TCA_RSVP_MAX
 261 };
 262
 263 #define TCA_RSVP_MAX (__TCA_RSVP_MAX - 1 )
 264
 265 struct tc_rsvp_gpi
 266 {
 267         __u32   key;
 268         __u32   mask;
 269         int     offset;
 270 };
 271
 272 struct tc_rsvp_pinfo
 273 {
 274         struct tc_rsvp_gpi dpi;
 275         struct tc_rsvp_gpi spi;
 276         __u8    protocol;
 277         __u8    tunnelid;
 278         __u8    tunnelhdr;
 279         __u8    pad;
 280 };
 281
 282 /* ROUTE filter */
 283
 284 enum
 285 {
 286         TCA_ROUTE4_UNSPEC,
 287         TCA_ROUTE4_CLASSID,
 288         TCA_ROUTE4_TO,
 289         TCA_ROUTE4_FROM,
 290         TCA_ROUTE4_IIF,
 291         TCA_ROUTE4_POLICE,
 292         TCA_ROUTE4_ACT,
 293         __TCA_ROUTE4_MAX
 294 };
 295
 296 #define TCA_ROUTE4_MAX (__TCA_ROUTE4_MAX - 1)
 297
 298
 299 /* FW filter */
 300
 301 enum
 302 {
 303         TCA_FW_UNSPEC,
 304         TCA_FW_CLASSID,
 305         TCA_FW_POLICE,
 306         TCA_FW_INDEV, /*  used by CONFIG_NET_CLS_IND */
 307         TCA_FW_ACT, /* used by CONFIG_NET_CLS_ACT */
 308         __TCA_FW_MAX
 309 };
 310
 311 #define TCA_FW_MAX (__TCA_FW_MAX - 1)
 312
 313 /* TC index filter */
 314
 315 enum
 316 {
 317         TCA_TCINDEX_UNSPEC,
 318         TCA_TCINDEX_HASH,
 319         TCA_TCINDEX_MASK,
 320         TCA_TCINDEX_SHIFT,
 321         TCA_TCINDEX_FALL_THROUGH,
 322         TCA_TCINDEX_CLASSID,
 323         TCA_TCINDEX_POLICE,
 324         TCA_TCINDEX_ACT,
 325         __TCA_TCINDEX_MAX
 326 };
 327
 328 #define TCA_TCINDEX_MAX     (__TCA_TCINDEX_MAX - 1)
 329
 330 /* Basic filter */
 331
 332 enum
 333 {
 334         TCA_BASIC_UNSPEC,
 335         TCA_BASIC_CLASSID,
 336         TCA_BASIC_EMATCHES,
 337         TCA_BASIC_ACT,
 338         TCA_BASIC_POLICE,
 339         __TCA_BASIC_MAX
 340 };
 341
 342 #define TCA_BASIC_MAX (__TCA_BASIC_MAX - 1)
 343
 344 /* Extended Matches */
 345
 346 struct tcf_ematch_tree_hdr
 347 {
 348         __u16           nmatches;
 349         __u16           progid;
 350 };
 351
 352 enum
 353 {
 354         TCA_EMATCH_TREE_UNSPEC,
 355         TCA_EMATCH_TREE_HDR,
 356         TCA_EMATCH_TREE_LIST,
 357         __TCA_EMATCH_TREE_MAX
 358 };
 359 #define TCA_EMATCH_TREE_MAX (__TCA_EMATCH_TREE_MAX - 1)
 360
 361 struct tcf_ematch_hdr
 362 {
 363         __u16           matchid;
 364         __u16           kind;
 365         __u16           flags;
 366         __u16           pad; /* currently unused */
 367 };
 368
 369 /*  0                   1
 370  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
 371  * +-----------------------+-+-+---+
 372  * |         Unused        |S|I| R |
 373  * +-----------------------+-+-+---+
 374  *
 375  * R(2) ::= relation to next ematch
 376  *          where: 0 0 END (last ematch)
 377  *                 0 1 AND
 378  *                 1 0 OR
 379  *                 1 1 Unused (invalid)
 380  * I(1) ::= invert result
 381  * S(1) ::= simple payload
 382  */
 383 #define TCF_EM_REL_END  0
 384 #define TCF_EM_REL_AND  (1<<0)
 385 #define TCF_EM_REL_OR   (1<<1)
 386 #define TCF_EM_INVERT   (1<<2)
 387 #define TCF_EM_SIMPLE   (1<<3)
 388
 389 #define TCF_EM_REL_MASK 3
 390 #define TCF_EM_REL_VALID(v) (((v) & TCF_EM_REL_MASK) != TCF_EM_REL_MASK)
 391
 392 enum
 393 {
 394         TCF_LAYER_LINK,
 395         TCF_LAYER_NETWORK,
 396         TCF_LAYER_TRANSPORT,
 397         __TCF_LAYER_MAX
 398 };
 399 #define TCF_LAYER_MAX (__TCF_LAYER_MAX - 1)
 400
 401 /* Ematch type assignments
 402  *   1..32767           Reserved for ematches inside kernel tree
 403  *   32768..65535       Free to use, not reliable
 404  */
 405 enum
 406 {
 407         TCF_EM_CONTAINER,
 408         TCF_EM_CMP,
 409         TCF_EM_NBYTE,
 410         TCF_EM_U32,
 411         TCF_EM_META,
 412         TCF_EM_TEXT,
 413         __TCF_EM_MAX
 414 };
 415
 416 enum
 417 {
 418         TCF_EM_PROG_TC
 419 };
 420
 421 enum
 422 {
 423         TCF_EM_OPND_EQ,
 424         TCF_EM_OPND_GT,
 425         TCF_EM_OPND_LT
 426 };
 427
 428 #endif