[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables

[sfrench/cifs-2.6.git] / include / linux / netfilter / xt_sctp.h

diff --git a/include/linux/netfilter/xt_sctp.h b/include/linux/netfilter/xt_sctp.h
new file mode 100644 (file)
index 0000000..b157897
--- /dev/null
+++ b/include/linux/netfilter/xt_sctp.h
@@ -0,0 +1,107 @@
+#ifndef _XT_SCTP_H_
+#define _XT_SCTP_H_
+
+#define XT_SCTP_SRC_PORTS              0x01
+#define XT_SCTP_DEST_PORTS             0x02
+#define XT_SCTP_CHUNK_TYPES            0x04
+
+#define XT_SCTP_VALID_FLAGS            0x07
+
+#define ELEMCOUNT(x) (sizeof(x)/sizeof(x[0]))
+
+
+struct xt_sctp_flag_info {
+       u_int8_t chunktype;
+       u_int8_t flag;
+       u_int8_t flag_mask;
+};
+
+#define XT_NUM_SCTP_FLAGS      4
+
+struct xt_sctp_info {
+       u_int16_t dpts[2];  /* Min, Max */
+       u_int16_t spts[2];  /* Min, Max */
+
+       u_int32_t chunkmap[256 / sizeof (u_int32_t)];  /* Bit mask of chunks to be matched according to RFC 2960 */
+
+#define SCTP_CHUNK_MATCH_ANY   0x01  /* Match if any of the chunk types are present */
+#define SCTP_CHUNK_MATCH_ALL   0x02  /* Match if all of the chunk types are present */
+#define SCTP_CHUNK_MATCH_ONLY  0x04  /* Match if these are the only chunk types present */
+
+       u_int32_t chunk_match_type;
+       struct xt_sctp_flag_info flag_info[XT_NUM_SCTP_FLAGS];
+       int flag_count;
+
+       u_int32_t flags;
+       u_int32_t invflags;
+};
+
+#define bytes(type) (sizeof(type) * 8)
+
+#define SCTP_CHUNKMAP_SET(chunkmap, type)              \
+       do {                                            \
+               chunkmap[type / bytes(u_int32_t)] |=    \
+                       1 << (type % bytes(u_int32_t)); \
+       } while (0)
+
+#define SCTP_CHUNKMAP_CLEAR(chunkmap, type)                    \
+       do {                                                    \
+               chunkmap[type / bytes(u_int32_t)] &=            \
+                       ~(1 << (type % bytes(u_int32_t)));      \
+       } while (0)
+
+#define SCTP_CHUNKMAP_IS_SET(chunkmap, type)                   \
+({                                                             \
+       (chunkmap[type / bytes (u_int32_t)] &                   \
+               (1 << (type % bytes (u_int32_t)))) ? 1: 0;      \
+})
+
+#define SCTP_CHUNKMAP_RESET(chunkmap)                          \
+       do {                                                    \
+               int i;                                          \
+               for (i = 0; i < ELEMCOUNT(chunkmap); i++)       \
+                       chunkmap[i] = 0;                        \
+       } while (0)
+
+#define SCTP_CHUNKMAP_SET_ALL(chunkmap)                        \
+       do {                                                    \
+               int i;                                          \
+               for (i = 0; i < ELEMCOUNT(chunkmap); i++)       \
+                       chunkmap[i] = ~0;                       \
+       } while (0)
+
+#define SCTP_CHUNKMAP_COPY(destmap, srcmap)                    \
+       do {                                                    \
+               int i;                                          \
+               for (i = 0; i < ELEMCOUNT(chunkmap); i++)       \
+                       destmap[i] = srcmap[i];                 \
+       } while (0)
+
+#define SCTP_CHUNKMAP_IS_CLEAR(chunkmap)               \
+({                                                     \
+       int i;                                          \
+       int flag = 1;                                   \
+       for (i = 0; i < ELEMCOUNT(chunkmap); i++) {     \
+               if (chunkmap[i]) {                      \
+                       flag = 0;                       \
+                       break;                          \
+               }                                       \
+       }                                               \
+        flag;                                          \
+})
+
+#define SCTP_CHUNKMAP_IS_ALL_SET(chunkmap)             \
+({                                                     \
+       int i;                                          \
+       int flag = 1;                                   \
+       for (i = 0; i < ELEMCOUNT(chunkmap); i++) {     \
+               if (chunkmap[i] != ~0) {                \
+                       flag = 0;                       \
+                               break;                  \
+               }                                       \
+       }                                               \
+        flag;                                          \
+})
+
+#endif /* _XT_SCTP_H_ */
+