include/linux/pkt_cls.h

   1 #ifndef __LINUX_PKT_CLS_H
   2 #define __LINUX_PKT_CLS_H
   3
   4 /* I think i could have done better macros ; for now this is stolen from
   5  * some arch/mips code - jhs
   6 */
   7 #define _TC_MAKE32(x) ((x))
   8
   9 #define _TC_MAKEMASK1(n) (_TC_MAKE32(1) << _TC_MAKE32(n))
  10 #define _TC_MAKEMASK(v,n) (_TC_MAKE32((_TC_MAKE32(1)<<(v))-1) << _TC_MAKE32(n))
  11 #define _TC_MAKEVALUE(v,n) (_TC_MAKE32(v) << _TC_MAKE32(n))
  12 #define _TC_GETVALUE(v,n,m) ((_TC_MAKE32(v) & _TC_MAKE32(m)) >> _TC_MAKE32(n))
  13
  14 /* verdict bit breakdown
  15  *
  16 bit 0: when set -> this packet has been munged already
  17
  18 bit 1: when set -> It is ok to munge this packet
  19
  20 bit 2,3,4,5: Reclassify counter - sort of reverse TTL - if exceeded
  21 assume loop
  22
  23 bit 6,7: Where this packet was last seen
  24 0: Above the transmit example at the socket level
  25 1: on the Ingress
  26 2: on the Egress
  27
  28 bit 8: when set --> Request not to classify on ingress.
  29
  30 bits 9,10,11: redirect counter -  redirect TTL. Loop avoidance
  31
  32  *
  33  * */
  34
  35 #define TC_MUNGED          _TC_MAKEMASK1(0)
  36 #define SET_TC_MUNGED(v)   ( TC_MUNGED | (v & ~TC_MUNGED))
  37 #define CLR_TC_MUNGED(v)   ( v & ~TC_MUNGED)
  38
  39 #define TC_OK2MUNGE        _TC_MAKEMASK1(1)
  40 #define SET_TC_OK2MUNGE(v)   ( TC_OK2MUNGE | (v & ~TC_OK2MUNGE))
  41 #define CLR_TC_OK2MUNGE(v)   ( v & ~TC_OK2MUNGE)
  42
  43 #define S_TC_VERD          _TC_MAKE32(2)
  44 #define M_TC_VERD          _TC_MAKEMASK(4,S_TC_VERD)
  45 #define G_TC_VERD(x)       _TC_GETVALUE(x,S_TC_VERD,M_TC_VERD)
  46 #define V_TC_VERD(x)       _TC_MAKEVALUE(x,S_TC_VERD)
  47 #define SET_TC_VERD(v,n)   ((V_TC_VERD(n)) | (v & ~M_TC_VERD))
  48
  49 #define S_TC_FROM          _TC_MAKE32(6)
  50 #define M_TC_FROM          _TC_MAKEMASK(2,S_TC_FROM)
  51 #define G_TC_FROM(x)       _TC_GETVALUE(x,S_TC_FROM,M_TC_FROM)
  52 #define V_TC_FROM(x)       _TC_MAKEVALUE(x,S_TC_FROM)
  53 #define SET_TC_FROM(v,n)   ((V_TC_FROM(n)) | (v & ~M_TC_FROM))
  54 #define AT_STACK        0x0
  55 #define AT_INGRESS      0x1
  56 #define AT_EGRESS       0x2
  57
  58 #define TC_NCLS          _TC_MAKEMASK1(8)
  59 #define SET_TC_NCLS(v)   ( TC_NCLS | (v & ~TC_NCLS))
  60 #define CLR_TC_NCLS(v)   ( v & ~TC_NCLS)
  61
  62 #define S_TC_RTTL          _TC_MAKE32(9)
  63 #define M_TC_RTTL          _TC_MAKEMASK(3,S_TC_RTTL)
  64 #define G_TC_RTTL(x)       _TC_GETVALUE(x,S_TC_RTTL,M_TC_RTTL)
  65 #define V_TC_RTTL(x)       _TC_MAKEVALUE(x,S_TC_RTTL)
  66 #define SET_TC_RTTL(v,n)   ((V_TC_RTTL(n)) | (v & ~M_TC_RTTL))
  67
  68 #define S_TC_AT          _TC_MAKE32(12)
  69 #define M_TC_AT          _TC_MAKEMASK(2,S_TC_AT)
  70 #define G_TC_AT(x)       _TC_GETVALUE(x,S_TC_AT,M_TC_AT)
  71 #define V_TC_AT(x)       _TC_MAKEVALUE(x,S_TC_AT)
  72 #define SET_TC_AT(v,n)   ((V_TC_AT(n)) | (v & ~M_TC_AT))
  73
  74 /* Action attributes */
  75 enum
  76 {
  77         TCA_ACT_UNSPEC,
  78         TCA_ACT_KIND,
  79         TCA_ACT_OPTIONS,
  80         TCA_ACT_INDEX,
  81         __TCA_ACT_MAX
  82 };
  83
  84 #define TCA_ACT_MAX __TCA_ACT_MAX
  85 #define TCA_OLD_COMPAT (TCA_ACT_MAX+1)
  86 #define TCA_ACT_MAX_PRIO 32
  87 #define TCA_ACT_BIND    1
  88 #define TCA_ACT_NOBIND  0
  89 #define TCA_ACT_UNBIND  1
  90 #define TCA_ACT_NOUNBIND        0
  91 #define TCA_ACT_REPLACE         1
  92 #define TCA_ACT_NOREPLACE       0
  93 #define MAX_REC_LOOP 4
  94 #define MAX_RED_LOOP 4
  95
  96 #define TC_ACT_UNSPEC   (-1)
  97 #define TC_ACT_OK               0
  98 #define TC_ACT_RECLASSIFY       1
  99 #define TC_ACT_SHOT             2
 100 #define TC_ACT_PIPE             3
 101 #define TC_ACT_STOLEN           4
 102 #define TC_ACT_QUEUED           5
 103 #define TC_ACT_REPEAT           6
 104 #define TC_ACT_JUMP             0x10000000
 105
 106 /* Action type identifiers*/
 107 enum
 108 {
 109         TCA_ID_UNSPEC=0,
 110         TCA_ID_POLICE=1,
 111         /* other actions go here */
 112         __TCA_ID_MAX=255
 113 };
 114
 115 #define TCA_ID_MAX __TCA_ID_MAX
 116
 117 struct tc_police
 118 {
 119         __u32                   index;
 120         int                     action;
 121 #define TC_POLICE_UNSPEC        TC_ACT_UNSPEC
 122 #define TC_POLICE_OK            TC_ACT_OK
 123 #define TC_POLICE_RECLASSIFY    TC_ACT_RECLASSIFY
 124 #define TC_POLICE_SHOT          TC_ACT_SHOT
 125 #define TC_POLICE_PIPE          TC_ACT_PIPE
 126
 127         __u32                   limit;
 128         __u32                   burst;
 129         __u32                   mtu;
 130         struct tc_ratespec      rate;
 131         struct tc_ratespec      peakrate;
 132         int                     refcnt;
 133         int                     bindcnt;
 134         __u32                   capab;
 135 };
 136
 137 struct tcf_t
 138 {
 139         __u32   install;
 140         __u32   lastuse;
 141         __u32   expires;
 142 };
 143
 144 struct tc_cnt
 145 {
 146         int                   refcnt;
 147         int                   bindcnt;
 148 };
 149
 150 #define tc_gen \
 151         __u32                 index; \
 152         __u32                 capab; \
 153         int                   action; \
 154         int                   refcnt; \
 155         int                   bindcnt
 156
 157 enum
 158 {
 159         TCA_POLICE_UNSPEC,
 160         TCA_POLICE_TBF,
 161         TCA_POLICE_RATE,
 162         TCA_POLICE_PEAKRATE,
 163         TCA_POLICE_AVRATE,
 164         TCA_POLICE_RESULT,
 165         __TCA_POLICE_MAX
 166 #define TCA_POLICE_RESULT TCA_POLICE_RESULT
 167 };
 168
 169 #define TCA_POLICE_MAX (__TCA_POLICE_MAX - 1)
 170
 171 /* U32 filters */
 172
 173 #define TC_U32_HTID(h) ((h)&0xFFF00000)
 174 #define TC_U32_USERHTID(h) (TC_U32_HTID(h)>>20)
 175 #define TC_U32_HASH(h) (((h)>>12)&0xFF)
 176 #define TC_U32_NODE(h) ((h)&0xFFF)
 177 #define TC_U32_KEY(h) ((h)&0xFFFFF)
 178 #define TC_U32_UNSPEC   0
 179 #define TC_U32_ROOT     (0xFFF00000)
 180
 181 enum
 182 {
 183         TCA_U32_UNSPEC,
 184         TCA_U32_CLASSID,
 185         TCA_U32_HASH,
 186         TCA_U32_LINK,
 187         TCA_U32_DIVISOR,
 188         TCA_U32_SEL,
 189         TCA_U32_POLICE,
 190         TCA_U32_ACT,
 191         TCA_U32_INDEV,
 192         TCA_U32_PCNT,
 193         __TCA_U32_MAX
 194 };
 195
 196 #define TCA_U32_MAX (__TCA_U32_MAX - 1)
 197
 198 struct tc_u32_key
 199 {
 200         __u32           mask;
 201         __u32           val;
 202         int             off;
 203         int             offmask;
 204 };
 205
 206 struct tc_u32_sel
 207 {
 208         unsigned char           flags;
 209         unsigned char           offshift;
 210         unsigned char           nkeys;
 211
 212         __u16                   offmask;
 213         __u16                   off;
 214         short                   offoff;
 215
 216         short                   hoff;
 217         __u32                   hmask;
 218         struct tc_u32_key       keys[0];
 219 };
 220
 221 #ifdef CONFIG_CLS_U32_PERF
 222 struct tc_u32_pcnt
 223 {
 224         __u64 rcnt;
 225         __u64 rhit;
 226         __u64 kcnts[0];
 227 };
 228 #endif
 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 {
 243         TCA_RSVP_UNSPEC,
 244         TCA_RSVP_CLASSID,
 245         TCA_RSVP_DST,
 246         TCA_RSVP_SRC,
 247         TCA_RSVP_PINFO,
 248         TCA_RSVP_POLICE,
 249         __TCA_RSVP_MAX
 250 };
 251
 252 #define TCA_RSVP_MAX (__TCA_RSVP_MAX - 1 )
 253
 254 struct tc_rsvp_gpi
 255 {
 256         __u32   key;
 257         __u32   mask;
 258         int     offset;
 259 };
 260
 261 struct tc_rsvp_pinfo
 262 {
 263         struct tc_rsvp_gpi dpi;
 264         struct tc_rsvp_gpi spi;
 265         __u8    protocol;
 266         __u8    tunnelid;
 267         __u8    tunnelhdr;
 268 };
 269
 270 /* ROUTE filter */
 271
 272 enum
 273 {
 274         TCA_ROUTE4_UNSPEC,
 275         TCA_ROUTE4_CLASSID,
 276         TCA_ROUTE4_TO,
 277         TCA_ROUTE4_FROM,
 278         TCA_ROUTE4_IIF,
 279         TCA_ROUTE4_POLICE,
 280         __TCA_ROUTE4_MAX
 281 };
 282
 283 #define TCA_ROUTE4_MAX (__TCA_ROUTE4_MAX - 1)
 284
 285
 286 /* FW filter */
 287
 288 enum
 289 {
 290         TCA_FW_UNSPEC,
 291         TCA_FW_CLASSID,
 292         TCA_FW_POLICE,
 293         TCA_FW_INDEV, /*  used by CONFIG_NET_CLS_IND */
 294         TCA_FW_ACT, /* used by CONFIG_NET_CLS_ACT */
 295         __TCA_FW_MAX
 296 };
 297
 298 #define TCA_FW_MAX (__TCA_FW_MAX - 1)
 299
 300 /* TC index filter */
 301
 302 enum
 303 {
 304         TCA_TCINDEX_UNSPEC,
 305         TCA_TCINDEX_HASH,
 306         TCA_TCINDEX_MASK,
 307         TCA_TCINDEX_SHIFT,
 308         TCA_TCINDEX_FALL_THROUGH,
 309         TCA_TCINDEX_CLASSID,
 310         TCA_TCINDEX_POLICE,
 311         __TCA_TCINDEX_MAX
 312 };
 313
 314 #define TCA_TCINDEX_MAX     (__TCA_TCINDEX_MAX - 1)
 315
 316 #endif