From a23197980e40d4d9414bcfaf59005a1dc2a89251 Mon Sep 17 00:00:00 2001 From: sreejith Date: Wed, 29 Mar 2017 01:15:02 -0400 Subject: Added vpp intial source code from master branch 17.01.1 Change-Id: I81bdace6f330825a1746a853766779dfb24765fd Signed-off-by: sreejith --- vpp/plugins/vcgn-plugin/vcgn/vcgn_db.h | 117 +++++++++++++++++++++++++++++++++ 1 file changed, 117 insertions(+) create mode 100644 vpp/plugins/vcgn-plugin/vcgn/vcgn_db.h (limited to 'vpp/plugins/vcgn-plugin/vcgn/vcgn_db.h') diff --git a/vpp/plugins/vcgn-plugin/vcgn/vcgn_db.h b/vpp/plugins/vcgn-plugin/vcgn/vcgn_db.h new file mode 100644 index 00000000..cd7d835c --- /dev/null +++ b/vpp/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 -- cgit 1.2.3-korg