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vpp/plugins/vcgn-plugin/vcgn/cnat_pcp_server.h
Ole Troan ea3e1fc875 Plugins: Clean up the plugin directory so that each plugin has its own 
directory and GNU autotools setup.

Change-Id: I6c59d1297389c9413db0c0b9bdf3b759080bf1b8
Signed-off-by: Ole Troan <ot@cisco.com>
2016-06-27 15:04:00 +00:00

399 lines
10 KiB
C
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/*
*------------------------------------------------------------------
* cnat_pcp_server.h
*
* Copyright (c) 2009-2012 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 __CNAT_PCP_SERVER_H__
#define __CNAT_PCP_SERVER_H__
#include "dslite_defs.h"
/* Debug utils of PCP */
#define PCP_DBG(debug, ...) \
if(PREDICT_FALSE(cnat_pcp_debug_flag >= debug)) { \
printf("%s:%s:%d - ", \
__FILE__, __FUNCTION__, __LINE__);\
printf(__VA_ARGS__);\
printf("\n"); \
}
#define PCP_DUMP_PDATA \
if(PREDICT_FALSE(cnat_pcp_debug_flag >= 100)) { \
printf("%s:%s:%d - \n", \
__FILE__, __FUNCTION__, __LINE__);\
printf("src - ip = %X, proto = %d, port = %d i_vrf = %d, o_vrf = %d\n", \
pcp_data.src_ip[3], pcp_data.proto, pcp_data.src_port, pcp_data.i_vrf, pcp_data.o_vrf); \
printf(" third party ip = %X\n", pcp_data.third_party_ip[3]); \
printf("map - ip = %X, port = %d \n", \
pcp_data.ext_ip[3], pcp_data.ext_port);\
printf("remote - ip = %X, port = %d \n", \
pcp_data.peer_ip[3], pcp_data.peer_port); \
printf("req life time = %d \n", pcp_data.req_lifetime); \
printf("drop = %d \n", pcp_data.drop);\
printf("udp_len = %d \n", pcp_data.udp_len); \
printf("pm = %p \n", pcp_data.pm); \
printf("cnat_proto = %X \n", pcp_data.cnat_proto); \
printf("inst_id = %X \n", pcp_data.inst_id); \
printf("======================================================\n"); \
}
#define PCP_DUMP_PACKET(ip, len) pcp_hex_dump(ip, len)
#ifdef TOBE_PORTED
#define PCP_INCR(counter) pcp_counters.pcp_##counter++ ;
#else
#define PCP_INCR(counter)
#endif
typedef struct pcp_debug_counters {
u64 pcp_input;
u64 pcp_output;
u64 pcp_service_nat44;
u64 pcp_service_dslite;
/* below all are drops */
u64 pcp_drops;
u64 pcp_i2o_key_inuse;
u64 pcp_throttle_drops;
u64 pcp_udp_len;
u64 pcp_nrequest;
u64 pcp_min_udp_len;
u64 pcp_max_udp_len;
u64 pcp_mod4_len;
u64 pcp_invalid_3rd_len;
u64 pcp_invalid_option;
u64 pcp_version;
u64 pcp_invalid_opcode;
u64 pcp_invalid_client_ip;
u64 pcp_invalid_proto;
u64 pcp_invalid_port;
u64 pcp_invalid_vrfmap;
u64 pcp_invalid_ext_addr;
u64 pcp_out_addr_inuse;
u64 pcp_exact_match;
u64 pcp_exact_entry_created;
u64 pcp_exact_db_alloc_failed;
u64 pcp_udb_mismatch;
u64 pcp_noexact_db_allocated;
u64 pcp_static_entry_present;
u64 pcp_entry_deleted;
u64 pcp_3rd_party_option;
/* map counters */
u64 pcp_map_input;
u64 pcp_map_min_len;
u64 pcp_map_max_len;
u64 pcp_map_invalid_option;
u64 pcp_map_invalid_option_len;
u64 pcp_map_pref_fail_option;
u64 pcp_map_invalid_delete_req;
u64 pcp_map_delete_req;
u64 pcp_map_create_req;
u64 pcp_map_refresh;
/* peer counters */
u64 pcp_peer_input;
u64 pcp_peer_invalid_len;
u64 pcp_peer_delete_req;
u64 pcp_peer_create_req;
u64 pcp_peer_addr_mistmatch;
u64 pcp_peer_refresh;
} pcp_debug_counters_t;
typedef struct {
u16 msg_id;
u8 rc;
u8 pad[5];
/* better to have a group structures rather than individual
variables, any change in counters is will automatically
reflect here */
pcp_debug_counters_t counters;
} pcp_show_counters_resp_t ;
/* PCP opcodes */
typedef enum pcp_opcode {
PCP_OPCODE_MAP = 1,
PCP_OPCODE_PEER = 2
}pcp_opcode_t;
/* PCP opcodes */
typedef enum pcp_options {
PCP_OPTION_3RD_PARTY = 1,
PCP_OPTION_PREF_FAIL = 2,
PCP_OPTION_FILTER = 3
} pcp_options_t;
/* PCP Result codes */
typedef enum pcp_result_codes {
PCP_SUCCESS = 0,
PCP_ERR_UNSUPP_VERSION = 1,
PCP_ERR_NOT_AUTHORIZED = 2,
PCP_ERR_MALFORMED_REQUEST = 3,
PCP_ERR_UNSUPP_OPCODE = 4,
PCP_ERR_UNSUPP_OPTION = 5,
PCP_ERR_MALFORMED_OPTION = 6,
PCP_ERR_NETWORK_FAILURE = 7,
PCP_ERR_NO_RESOURCES = 8,
PCP_ERR_UNSUPP_PROTOCOL = 9,
PCP_ERR_USER_EX_QUOTA = 10,
PCP_ERR_CANNOT_PROVIDE_EXTERNAL = 11,
PCP_ERR_ADDRESS_MISMATCH = 12,
PCP_ERR_EXCESSIVE_REMOTE_PEERS = 13
} pcp_result_codes_t;
#define PCP_DISABLED 0
#define PCP_ENABLED 1
#define PCP_DROP 1
#define PCP_STATIC_LIFETIME 0xFFFFFFFF
#define PCP_MAX_LIFETIME 0x00015180 /* 24 hours = 86400 seconds*/
#define PCP_VERSION_SUPPORTED 1
#define PCP_NO_PREF_FAIL_OPTION 0
#define PCP_PREF_FAIL_OPTION 1
#define CNAT_DEF_PCP_PORT 5351
#define PCP_REQ_RESP_BIT 0x80
#define PCP_RESPONSE(r_opcode) (r_opcode & PCP_REQ_RESP_BIT)
#define PCP_REQUEST(r_opcode) !(PCP_RESPONSE(r_opcode))
#define PCP_REQ_OPCODE(r_opcode) (r_opcode & 0x7F)
/* 24 bytes */
#define PCP_COMMON_HDR_LEN sizeof(pcp_request_t)
/* 8 bytes */
#define UDP_HDR_LEN sizeof(udp_hdr_type_t)
#define PCP_PREF_FAIL_OPTION_SIZE \
sizeof(pcp_prefer_fail_option_t)
#define PCP_3RD_PARTY_OPTION_SIZE \
sizeof(pcp_3rd_party_option_t)
#define PCP_MIN_LEN PCP_COMMON_HDR_LEN
/* 24+8=32 bytes */
#define PCP_MIN_UDP_LEN (PCP_MIN_LEN + UDP_HDR_LEN)
#define PCP_MAX_LEN 1024
/* 1024+8 = 1032 bytes */
#define PCP_MAX_UDP_LEN (PCP_MAX_LEN + UDP_HDR_LEN)
/* 24+ 24 = 48 bytes */
#define PCP_MAP_OPCODE_MIN_LEN (PCP_COMMON_HDR_LEN + \
sizeof( pcp_map_option_specific_data_t))
/* 24 + 44 = 68 bytes */
#define PCP_PEER_OPCODE_MIN_LEN (PCP_COMMON_HDR_LEN + \
sizeof( pcp_peer_option_specific_data_t))
/* 48 + 8 = 56 bytes */
#define PCP_MAP_OPCODE_MIN_UDP_LEN (PCP_MAP_OPCODE_MIN_LEN + \
UDP_HDR_LEN )
#define PCP_GET_MAP_OPTION_OFFSET(req) \
((u8*)req + PCP_MAP_OPCODE_MIN_LEN)
#define PCP_GET_PEER_OPTION_OFFSET(req) \
((u8*)req + PCP_PEER_OPCODE_MIN_LEN)
#define PCP_REQ_TOTAL_LEN(udp) (udp->udp_length - \
UDP_HDR_LEN)
/* 56 + 4 = 60 bytes */
#define PCP_MAP_OPCODE_PREF_FAIL_OPTION_LEN \
(PCP_MAP_OPCODE_MIN_UDP_LEN + \
sizeof(pcp_prefer_fail_option_t))
/* 68 + 8 = 76 bytes */
#define PCP_PEER_OPCODE_MIN_UDP_LEN (PCP_PEER_OPCODE_MIN_LEN + \
UDP_HDR_LEN)
#define PCP_MUST_OPTION(option_code) (option_code & 0x80)
/* 56 + 20 = 76*/
#define PCP_DSLITE_MAP_OPCODE_MIN_UDP_LEN \
( PCP_MAP_OPCODE_MIN_UDP_LEN + \
PCP_3RD_PARTY_OPTION_SIZE)
/* 60 + 20 = 80 */
#define PCP_DSLITE_MAP_OPCODE_MAX_UDP_LEN \
( PCP_MAP_OPCODE_PREF_FAIL_OPTION_LEN + \
PCP_3RD_PARTY_OPTION_SIZE)
/* 76 + 20 = 96 */
#define PCP_DSLITE_PEER_OPCODE_MIN_UDP_LEN \
( PCP_PEER_OPCODE_MIN_UDP_LEN + \
PCP_3RD_PARTY_OPTION_SIZE)
#define PCP_SET_CNAT_PROTO(proto) \
pcp_data.cnat_proto = (proto == TCP_PROT) ? CNAT_TCP: \
(proto == UDP_PROT)? CNAT_UDP : CNAT_ICMP;
#define PCP_SET_REQ_LIFETIME() \
if(pcp_data.db->flags & CNAT_DB_FLAG_STATIC_PORT) { \
pcp_data.db->proto_data.seq_pcp.pcp_lifetime = \
PCP_STATIC_LIFETIME; \
pcp_data.req_lifetime = PCP_STATIC_LIFETIME; \
} else { \
pcp_data.db->proto_data.seq_pcp.pcp_lifetime = \
pcp_data.req_lifetime + cnat_current_time ; \
}
/* per second not more than PCP_THROTTLE_LIMIT
* delete requests will be handled.
* this excludes , specific entries, in which
* only one entry needs to be deleted
*/
#define PCP_THROTTLE_LIMIT 2
typedef struct pcp_request {
u8 ver;
u8 r_opcode;
u16 reserved;
u32 req_lifetime;
u32 ip[4]; /* ipv4 will be represented
by the ipv4 mapped ipv6 */
} pcp_request_t;
typedef struct pcp_response {
u8 ver;
u8 r_opcode;
u8 reserved;
u8 result_code;
u32 lifetime;
u32 epochtime;
u32 reserved1[3];
} pcp_response_t;
typedef struct pcp_options_hdr {
u8 code;
u8 reserved;
u16 len;
u8 data[0];
} pcp_options_hdr_t;
/* same for both request and response */
typedef struct pcp_map_option_specific_data {
u8 protocol;
u8 reserved[3];
u16 int_port;
u16 ext_port;
u32 ext_ip[4]; /* ipv4 will be represnted
by the ipv4 mapped ipv6 */
} pcp_map_option_specific_data_t;
/* same for both request and response */
typedef struct pcp_peer_option_specific_data {
u8 protocol;
u8 reserved[3];
u16 int_port;
u16 ext_port;
u32 ext_ip[4]; /* ipv4 will be represented
by the ipv4 mapped ipv6 */
u16 peer_port;
u16 reserved1;
u32 peer_ip[4];
} pcp_peer_option_specific_data_t;
typedef struct pcp_prefer_fail_option {
u8 option;
u8 reserved;
u16 len;
} pcp_prefer_fail_option_t;
typedef struct pcp_3rd_party_option{
u8 option;
u8 reserved;
u16 len;
u32 ip[4];
} pcp_3rd_party_option_t;
/* structure used as pipeline data */
typedef struct pcp_pipeline_data {
union {
u8 *p;
ipv4_header *ip ;
ipv6_header_t *ipv6 ;
} l3addr;
udp_hdr_type_t *udp;
pcp_request_t *req;
pcp_response_t *resp;
pcp_opcode_t opcode;
u32 src_ip[4];
u16 src_port;
u8 proto;
u16 i_vrf;
u16 o_vrf;
u32 ext_ip[4];
u16 ext_port;
u32 third_party_ip[4];
/* valid for peer opcode */
u32 peer_ip[4];
u32 peer_port;
u32 req_lifetime;
u32 udp_len;
pcp_options_t pref_fail;
pcp_options_t third_party;
u8 *option_spec;
pcp_result_codes_t ret_code;
cnat_portmap_v2_t *pm;
cnat_main_db_entry_t *db;
cnat_vrfmap_t *vrfmap;
dslite_table_entry_t *inst_ptr;
u16 inst_id;
u32 flags;
u16 cnat_proto;
/* is packet needs to be dropped ? */
u8 drop;
/* nat44, dslite, nat64 */
#define PCP_SERVICE_NAT44 1
#define PCP_SERVICE_DSLITE 2
#define PCP_SERVICE_NAT64 3
u8 service_type;
#define PCP_REQ_ENTRY_PRESENT 1
#define PCP_REQ_EXT_MAP_PRESENT 1
u8 state;
} pcp_pipeline_data_t;
#endif /* __CNAT_PCP_sERVER_H__ */
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