1 files changed, 99 insertions, 0 deletions
diff --git a/src/plugins/acl/fa_node.h b/src/plugins/acl/fa_node.h
new file mode 100644
index 00000000000..76a40a38486
--- /dev/null
+++ b/src/plugins/acl/fa_node.h
@@ -0,0 +1,99 @@
+#ifndef _FA_NODE_H_
+#define _FA_NODE_H_
+
+#include <stddef.h>
+#include "bihash_40_8.h"
+
+#define TCP_FLAG_FIN    0x01
+#define TCP_FLAG_SYN    0x02
+#define TCP_FLAG_RST    0x04
+#define TCP_FLAG_PUSH   0x08
+#define TCP_FLAG_ACK    0x10
+#define TCP_FLAG_URG    0x20
+#define TCP_FLAG_ECE    0x40
+#define TCP_FLAG_CWR    0x80
+#define TCP_FLAGS_RSTFINACKSYN (TCP_FLAG_RST + TCP_FLAG_FIN + TCP_FLAG_SYN + TCP_FLAG_ACK)
+#define TCP_FLAGS_ACKSYN (TCP_FLAG_SYN + TCP_FLAG_ACK)
+
+#define ACL_FA_CONN_TABLE_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
+#define ACL_FA_CONN_TABLE_DEFAULT_HASH_MEMORY_SIZE (1<<30)
+#define ACL_FA_CONN_TABLE_DEFAULT_MAX_ENTRIES 1000000
+
+typedef union {
+  u64 as_u64;
+  struct {
+    u8 tcp_flags_valid;
+    u8 tcp_flags;
+    u8 is_input;
+    u8 l4_valid;
+  };
+} fa_packet_info_t;
+
+typedef union {
+  u64 as_u64;
+  struct {
+    u16 port[2];
+    u16 proto;
+    u16 rsvd;
+  };
+} fa_session_l4_key_t;
+
+typedef union {
+  struct {
+    ip46_address_t addr[2];
+    fa_session_l4_key_t l4;
+    /* This field should align with u64 value in bihash_40_8 keyvalue struct */
+    fa_packet_info_t pkt;
+  };
+  clib_bihash_kv_40_8_t kv;
+} fa_5tuple_t;
+
+
+typedef struct {
+  fa_5tuple_t info; /* (5+1)*8 = 48 bytes */
+  u64 last_active_time;   /* +8 bytes = 56 */
+  u32 sw_if_index;        /* +4 bytes = 60 */
+  union {
+    u8 as_u8[2];
+    u16 as_u16;
+  } tcp_flags_seen; ;     /* +2 bytes = 62 */
+  u8 link_list_id;           /* +1 bytes = 63 */
+  u8 reserved1;           /* +1 bytes = 64 */
+  u32 link_prev_idx;
+  u32 link_next_idx;
+  u64 reserved2[7];
+} fa_session_t;
+
+
+/*
+ * A few compile-time constraints on the size and the layout of the union, to ensure
+ * it makes sense both for bihash and for us.
+ */
+
+#define CT_ASSERT_EQUAL(name, x,y) typedef int assert_ ## name ## _compile_time_assertion_failed[((x) == (y))-1]
+CT_ASSERT_EQUAL(fa_l3_key_size_is_40, offsetof(fa_5tuple_t, pkt), offsetof(clib_bihash_kv_40_8_t, value));
+CT_ASSERT_EQUAL(fa_l4_key_t_is_8, sizeof(fa_session_l4_key_t), sizeof(u64));
+CT_ASSERT_EQUAL(fa_packet_info_t_is_8, sizeof(fa_packet_info_t), sizeof(u64));
+CT_ASSERT_EQUAL(fa_l3_kv_size_is_48, sizeof(fa_5tuple_t), sizeof(clib_bihash_kv_40_8_t));
+
+/* Let's try to fit within the cacheline */
+CT_ASSERT_EQUAL(fa_session_t_size_is_64, sizeof(fa_session_t), 128);
+#undef CT_ASSERT_EQUAL
+
+
+typedef enum {
+  ACL_FA_ERROR_DROP,
+  ACL_FA_N_NEXT,
+} acl_fa_next_t;
+
+
+enum
+{
+  ACL_FA_CLEANER_RESCHEDULE = 1,
+  ACL_FA_CLEANER_DELETE_BY_SW_IF_INDEX,
+} acl_fa_cleaner_process_event_e;
+
+void acl_fa_enable_disable(u32 sw_if_index, int is_input, int enable_disable);
+
+
+#endif