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/*
// Copyright (c) 2017 Intel Corporation
//
// 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 _CGNAPT_PCP_H_
#define _CGNAPT_PCP_H_
/**
* @file
*
* PCP-related defines
*/
#include <stdint.h>
#include <rte_ether.h>
#include <rte_udp.h>
#include <rte_pipeline.h>
#include <rte_ip.h>
#include "pipeline_cgnapt_common.h"
void handle_pcp_req(struct rte_mbuf *rx_pkt,
uint8_t ver,
void *pipeline_cgnapt_ptr);
void construct_pcp_resp(struct rte_mbuf *rx_pkt,
struct rte_mbuf *tx_pkt,
uint8_t ver,
struct rte_pipeline *rte_p);
void *pipeline_cgnapt_msg_req_pcp_handler(
__rte_unused struct pipeline *p,
void *msg);
#ifdef __cplusplus
extern "C" {
#endif
/************************** Constats used in PCP ****************************/
#define PCP_SERVER_PORT 5351
/* PCP Req or Resp */
enum{
PCP_REQ,
PCP_RESP,
};
/* PCP life time in seconds */
enum{
PCP_LONG_LTIME = 30 * 60,
PCP_SHORT_LTIME = 30,
MAX_PCP_LIFE_TIME = 120 * 60,
};
/* PCP opcodes */
enum{
PCP_ANNOUNCE,
PCP_MAP,
PCP_PEER,
};
/* PCP result codes */
enum{
PCP_SUCCESS,
PCP_UNSUPP_VERSION,
PCP_NOT_AUTHORIZED,
PCP_MALFORMED_REQUEST,
PCP_UNSUPP_OPCODE,
PCP_UNSUPP_OPTION,
PCP_MALFORMED_OPTION,
PCP_NETWORK_FAILURE,
PCP_NO_RESOURCES,
PCP_UNSUPP_PROTOCOL,
PCP_USER_EX_QUOTA,
PCP_CANNOT_PROVIDE_EXTERNAL,
PCP_ADDRESS_MISMATCH,
PCP_EXCESSIVE_REMOTE_PEERS
};
/*
* @struct
*
* PCP request header format
*/
struct pcp_req_hdr {
uint8_t ver;
uint8_t opcode:7; //First LSB
uint8_t req_resp:1;// MSB
uint16_t res_unuse;
uint32_t life_time;
uint32_t cli_ip[4];
} __attribute__((__packed__));
/*
* @struct
*
* PCP response header format
*/
struct pcp_resp_hdr {
uint8_t ver;
uint8_t opcode:7; //First LSB
uint8_t req_resp:1;// MSB
uint8_t res_unuse;
uint8_t result_code;
uint32_t life_time;
uint32_t epoch_time;
uint32_t reserve[3];
} __attribute__((__packed__));
/*
* @struct
*
* PCP MAP request header format
*/
struct pcp_map_req {
uint32_t nonce[3];
uint8_t protocol;
uint32_t res_unuse1:24;
uint16_t int_port;
uint16_t ext_port;
uint32_t ext_ip[4];
} __attribute__((__packed__));
/*
* @struct
*
* PCP MAP response header format
*/
struct pcp_map_resp {
uint32_t nonce[3];
uint8_t protocol;
uint32_t res_unuse1:24;
uint16_t int_port;
uint16_t ext_port;
uint32_t ext_ip[4];
} __attribute__((__packed__));
/*
* @struct
*
* PCP PEER request header format
*/
struct pcp_peer_req {
uint32_t nonce[3];
uint8_t protocol;
uint32_t res_unuse1:24;
uint16_t int_port;
uint16_t ext_port;
uint32_t ext_ip[4];
uint16_t rpeer_port;
uint16_t res_unuse2;
uint32_t rpeer_ip[4];
} __attribute__((__packed__));
/*
* @struct
*
* PCP PEER response header format
*/
struct pcp_peer_resp {
uint32_t nonce[3];
uint8_t protocol;
uint32_t res_unuse1:24;
uint16_t int_port;
uint16_t ext_port;
uint32_t ext_ip[4];
uint16_t rpeer_port;
uint16_t res_unuse2;
uint32_t rpeer_ip[4];
} __attribute__((__packed__));
/*
* @struct
*
* Customized IPv4 header of struct ipv4_hdr
*/
struct ipv4 {
uint8_t version_ihl; /**< version and header length */
uint8_t type_of_service; /**< type of service */
uint16_t total_length; /**< length of packet */
uint16_t packet_id; /**< packet ID */
uint16_t fragment_offset; /**< fragmentation offset */
uint8_t time_to_live; /**< time to live */
uint8_t next_proto_id; /**< protocol ID */
uint16_t hdr_checksum; /**< header checksum */
uint32_t src_addr; /**< source address */
uint32_t dst_addr; /**< destination address */
uint16_t src_port;
uint16_t dst_port;
} __attribute__((__packed__));
/*
* @struct
*
* Customized IPv6 header of struct ipv6_hdr
*/
struct ipv6 {
uint32_t vtc_flow; /**< IP version, traffic class & flow label. */
uint16_t payload_len; /**< IP packet length -
* includes sizeof(ip_header).
*/
uint8_t proto; /**< Protocol, next header. */
uint8_t hop_limits; /**< Hop limits. */
uint8_t src_addr[16]; /**< IP address of source host. */
uint8_t dst_addr[16]; /**< IP address of destination host(s). */
uint16_t src_port;
uint16_t dst_port;
} __attribute__((__packed__));
/*
* @struct
*
* To represent the entire pkt data in one structure
*/
struct pcp_pkt {
struct ether_hdr eth;
union{
struct ipv4 ipv4;
struct ipv6 ipv6;
};
} __attribute__((__packed__));
/**
* A structure defining the PCP msg request
*/
struct pipeline_cgnapt_pcp_msg_req {
enum pipeline_msg_req_type type;
enum pipeline_cgnapt_msg_req_type subtype;
/* data */
uint8_t cmd;
uint32_t lifetime;
};
/**
* A structure defining the PCP cmd response message.
*/
struct pipeline_cgnapt_pcp_msg_rsp {
int status;
};
/* All required offsets */
enum{
MBUF_HEAD_ROOM = 256,
ETH_HDR_SZ = 14,
IPV4_HDR_SZ = 20,
IPV6_HDR_SZ = 40,
IPV4_SZ = 4,
IPV6_SZ = 6,
TCP_HDR_SZ = 20,
UDP_HDR_SZ = 8,
PCP_REQ_RESP_HDR_SZ = 24,
PCP_MAP_REQ_RESP_SZ = 36,
PCP_PEER_REQ_RESP_SZ = 56,
};
enum{
ETH_DST_MAC = MBUF_HEAD_ROOM,
ETH_SRC_MAC = MBUF_HEAD_ROOM + 6,
PKT_TYPE = MBUF_HEAD_ROOM + 12,
IP_OFFSET = MBUF_HEAD_ROOM + ETH_HDR_SZ,
/* IPV4 Offsets */
IPV4_PROTOCOL = MBUF_HEAD_ROOM + ETH_HDR_SZ + 9,
IPV4_SRC_ADD_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + 12,
IPV4_DST_ADD_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + 12 + IPV4_SZ,
IPV4_TCP_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV4_HDR_SZ,
IPV4_TCP_SRC_PORT_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV4_HDR_SZ,
IPV4_TCP_DST_PORT_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV4_HDR_SZ + 2,
IPV4_UDP_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV4_HDR_SZ,
IPV4_UDP_SRC_PORT_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV4_HDR_SZ,
IPV4_UDP_DST_PORT_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV4_HDR_SZ + 2,
IPV4_PCP_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ +
IPV4_HDR_SZ + UDP_HDR_SZ,
IPV4_PCP_MAP_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV4_HDR_SZ +
UDP_HDR_SZ + PCP_REQ_RESP_HDR_SZ,
IPV4_PCP_PEER_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV4_HDR_SZ +
UDP_HDR_SZ + PCP_REQ_RESP_HDR_SZ,
IPV4_PCP_MAP_PL_LEN = IPV4_HDR_SZ + UDP_HDR_SZ + PCP_REQ_RESP_HDR_SZ +
PCP_MAP_REQ_RESP_SZ,
IPV4_PCP_PEER_PL_LEN = IPV4_HDR_SZ + UDP_HDR_SZ + PCP_REQ_RESP_HDR_SZ +
PCP_PEER_REQ_RESP_SZ,
/* IPV6 Offsets */
IPV6_PROTOCOL = MBUF_HEAD_ROOM + ETH_HDR_SZ + 6,
IPV6_SRC_ADD_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + 8,
IPV6_DST_ADD_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + 8 + IPV6_SZ,
IPV6_TCP_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV6_HDR_SZ,
IPV6_TCP_SRC_PORT_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV6_HDR_SZ,
IPV6_TCP_DST_PORT_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV6_HDR_SZ + 2,
IPV6_UDP_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV6_HDR_SZ,
IPV6_UCP_SRC_PORT_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV6_HDR_SZ,
IPV6_UCP_DST_PORT_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV6_HDR_SZ + 2,
IPV6_PCP_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ +
IPV6_HDR_SZ + UDP_HDR_SZ,
IPV6_PCP_MAP_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV6_HDR_SZ +
UDP_HDR_SZ + PCP_REQ_RESP_HDR_SZ,
IPV6_PCP_PEER_OFST = MBUF_HEAD_ROOM + ETH_HDR_SZ + IPV6_HDR_SZ +
UDP_HDR_SZ + PCP_REQ_RESP_HDR_SZ,
IPV6_PCP_MAP_PL_LEN = IPV6_HDR_SZ + UDP_HDR_SZ +
PCP_REQ_RESP_HDR_SZ + PCP_MAP_REQ_RESP_SZ,
IPV6_PCP_PEER_PL_LEN = IPV6_HDR_SZ + UDP_HDR_SZ +
PCP_REQ_RESP_HDR_SZ + PCP_PEER_REQ_RESP_SZ,
};
enum{
STATIC_CGNAPT_TIMEOUT = -1,
DYNAMIC_CGNAPT_TIMEOUT = 0,
};
enum PCP_RET {
PCP_INIT_SUCCESS,
PCP_INIT_UNSUCCESS,
PCP_PCP_PKT,
//PCP_PCP_PKT_SUCCESS,
PCP_NOT_PCP_PKT,
PCP_PKT_CORRUPT,
};
uint8_t _PCP_DEBUG;
uint32_t pcp_success_count;
uint32_t pcp_error_count;
uint32_t pcp_entry_count;
uint32_t pcp_enable;
uint8_t pcp_pool_init;
struct rte_mempool *pcp_mbuf_pool;
enum PCP_RET pcp_init(void);
#ifdef __cplusplus
}
#endif
#endif /* CGNAPT_PCP_H_ */
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