l4/pkg/linux-26-headers/include/linux/netfilter_ipv4/ipt_sctp.h

   1 #ifndef _IPT_SCTP_H_
   2 #define _IPT_SCTP_H_
   3
   4 #define IPT_SCTP_SRC_PORTS              0x01
   5 #define IPT_SCTP_DEST_PORTS             0x02
   6 #define IPT_SCTP_CHUNK_TYPES            0x04
   7
   8 #define IPT_SCTP_VALID_FLAGS            0x07
   9
  10
  11 struct ipt_sctp_flag_info {
  12         u_int8_t chunktype;
  13         u_int8_t flag;
  14         u_int8_t flag_mask;
  15 };
  16
  17 #define IPT_NUM_SCTP_FLAGS      4
  18
  19 struct ipt_sctp_info {
  20         u_int16_t dpts[2];  /* Min, Max */
  21         u_int16_t spts[2];  /* Min, Max */
  22
  23         u_int32_t chunkmap[256 / sizeof (u_int32_t)];  /* Bit mask of chunks to be matched according to RFC 2960 */
  24
  25 #define SCTP_CHUNK_MATCH_ANY   0x01  /* Match if any of the chunk types are present */
  26 #define SCTP_CHUNK_MATCH_ALL   0x02  /* Match if all of the chunk types are present */
  27 #define SCTP_CHUNK_MATCH_ONLY  0x04  /* Match if these are the only chunk types present */
  28
  29         u_int32_t chunk_match_type;
  30         struct ipt_sctp_flag_info flag_info[IPT_NUM_SCTP_FLAGS];
  31         int flag_count;
  32
  33         u_int32_t flags;
  34         u_int32_t invflags;
  35 };
  36
  37 #define bytes(type) (sizeof(type) * 8)
  38
  39 #define SCTP_CHUNKMAP_SET(chunkmap, type)               \
  40         do {                                            \
  41                 chunkmap[type / bytes(u_int32_t)] |=    \
  42                         1 << (type % bytes(u_int32_t)); \
  43         } while (0)
  44
  45 #define SCTP_CHUNKMAP_CLEAR(chunkmap, type)                     \
  46         do {                                                    \
  47                 chunkmap[type / bytes(u_int32_t)] &=            \
  48                         ~(1 << (type % bytes(u_int32_t)));      \
  49         } while (0)
  50
  51 #define SCTP_CHUNKMAP_IS_SET(chunkmap, type)                    \
  52 ({                                                              \
  53         (chunkmap[type / bytes (u_int32_t)] &                   \
  54                 (1 << (type % bytes (u_int32_t)))) ? 1: 0;      \
  55 })
  56
  57 #define SCTP_CHUNKMAP_RESET(chunkmap)                           \
  58         do {                                                    \
  59                 int i;                                          \
  60                 for (i = 0; i < ARRAY_SIZE(chunkmap); i++)      \
  61                         chunkmap[i] = 0;                        \
  62         } while (0)
  63
  64 #define SCTP_CHUNKMAP_SET_ALL(chunkmap)                         \
  65         do {                                                    \
  66                 int i;                                          \
  67                 for (i = 0; i < ARRAY_SIZE(chunkmap); i++)      \
  68                         chunkmap[i] = ~0;                       \
  69         } while (0)
  70
  71 #define SCTP_CHUNKMAP_COPY(destmap, srcmap)                     \
  72         do {                                                    \
  73                 int i;                                          \
  74                 for (i = 0; i < ARRAY_SIZE(chunkmap); i++)      \
  75                         destmap[i] = srcmap[i];                 \
  76         } while (0)
  77
  78 #define SCTP_CHUNKMAP_IS_CLEAR(chunkmap)                \
  79 ({                                                      \
  80         int i;                                          \
  81         int flag = 1;                                   \
  82         for (i = 0; i < ARRAY_SIZE(chunkmap); i++) {    \
  83                 if (chunkmap[i]) {                      \
  84                         flag = 0;                       \
  85                         break;                          \
  86                 }                                       \
  87         }                                               \
  88         flag;                                           \
  89 })
  90
  91 #define SCTP_CHUNKMAP_IS_ALL_SET(chunkmap)              \
  92 ({                                                      \
  93         int i;                                          \
  94         int flag = 1;                                   \
  95         for (i = 0; i < ARRAY_SIZE(chunkmap); i++) {    \
  96                 if (chunkmap[i] != ~0) {                \
  97                         flag = 0;                       \
  98                                 break;                  \
  99                 }                                       \
 100         }                                               \
 101         flag;                                           \
 102 })
 103
 104 #endif /* _IPT_SCTP_H_ */
 105