1 files changed, 117 insertions, 0 deletions
diff --git a/plugins/vcgn-plugin/vcgn/vcgn_db.h b/plugins/vcgn-plugin/vcgn/vcgn_db.h
new file mode 100644
index 00000000000..cd7d835cba1
--- /dev/null
+++ b/plugins/vcgn-plugin/vcgn/vcgn_db.h
@@ -0,0 +1,117 @@
+/*
+ *------------------------------------------------------------------
+ * vcgn_db.h - translation database definitions
+ *
+ * Copyright (c) 2007-2014 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+
+#ifndef __VCGN_DB_H__
+#define __VCGN_DB_H__
+
+#include "index_list.h"
+
+/*
+ * The key structure. All fields are in NETWORK byte order!
+ */
+typedef struct {
+    u32 ipv4;
+    u16 port;
+    u16 vrf;  //bit0-12:vrf, bit13:unused, bit14-15:protocol
+} cnat_db_key_t;
+
+/* bit14-15:protocol in cnat_db_key_t */
+#define CNAT_INVALID_PROTO     0x0000
+#define CNAT_UDP      0x4000
+#define CNAT_TCP      0x8000
+#define CNAT_ICMP     0xc000
+#define CNAT_VRF_MASK 0x3fff
+#define CNAT_PRO_MASK 0xc000
+#define CNAT_PRO_SHIFT 14
+
+/*
+ * Maximum number of VRF entries supported
+ */
+#define CNAT_MAX_VRFMAP_ENTRIES  (CNAT_VRF_MASK + 1)
+/*
+ * for hashing purposes, fetch the key in one instr.
+ */
+typedef union {
+    cnat_db_key_t k;
+    u64 key64;
+} cnat_key_t;
+
+/*
+ * Main translation database entries. Currently 0x50 = 80 bytes in length.
+ * Given 20,000,000 entries, it saves nearly 1gb of SDRAM to pack the entries
+ * and pay the extra prefetch. So, that's what we do.
+ */
+
+typedef struct {
+    /* 0x00 */
+    index_slist_t out2in_hash;  /* hash-and-chain, x2 */
+    index_slist_t in2out_hash; 
+
+    /* 0x08 */
+    cnat_key_t out2in_key;      /* network-to-user, outside-to-inside key */
+
+    /* 0x10 */
+    cnat_key_t in2out_key;      /* user-to-network, inside-to-outside key */
+
+    /* 0x18 */
+    index_dlist_t user_ports;   /* per-user translation list */
+
+    /* 0x20 */
+    u32 user_index;             /* index of user that owns this entry */
+
+    /* 0x24 */
+    u16 vrfmap_index;           /* index of vrfmap */
+
+    /* 0x26 */
+    u16 flags;                  /* Always need flags... */
+#define CNAT_DB_FLAG_PORT_PAIR (1<<0)
+#define CNAT_DB_FLAG_TCP_ACTIVE (1<<1)
+#define CNAT_DB_FLAG_ENTRY_FREE (1<<2)
+#define CNAT_DB_FLAG_UDP_ACTIVE (1<<3)
+#define CNAT_DB_FLAG_STATIC_PORT (1<<4)
+#define CNAT_DB_FLAG_ALG_ENTRY  (1<<5)
+    
+    /* 0x28 */
+    u32 dst_ipv4;               /* pointer to ipv4 dst list, used in evil mode */
+
+    /* 0x2C */
+    u32 out2in_pkts;            /* pkt counters */
+
+    /* 0x30 */
+    u32 in2out_pkts;
+
+    /* 0x34 */
+    u32 entry_expires;     /* timestamp used to expire translations */
+
+    /* 0x38 */
+    union {                     /* used by FTP ALG, pkt len delta due to FTP PORT cmd */
+    u16 delta;             
+    i8  alg_dlt[2];             /* two delta values, 0 for previous, 1 for current */
+    u16 il;                     /* Used to indicate if interleaved mode is used
+                                   in case of RTSP ALG */
+    } alg;
+
+    /* 0x 48 */
+    u32 tcp_seq_num;            /* last tcp (FTP) seq # that has pkt len change due to PORT */
+
+    cnat_timeout_t destn_key;  
+
+    /* 0x4C... last byte -- 72 total */
+} cnat_main_db_entry_t;
+#endif