diff options
Diffstat (limited to 'plugins/vcgn-plugin/vcgn/nat64_defs.h')
| -rw-r--r-- | plugins/vcgn-plugin/vcgn/nat64_defs.h | 576 |
1 files changed, 576 insertions, 0 deletions
diff --git a/plugins/vcgn-plugin/vcgn/nat64_defs.h b/plugins/vcgn-plugin/vcgn/nat64_defs.h new file mode 100644 index 00000000000..47e431a7462 --- /dev/null +++ b/plugins/vcgn-plugin/vcgn/nat64_defs.h @@ -0,0 +1,576 @@ +/* + *------------------------------------------------------------------ + * nat64_defs.h - NAT64 structure definiitions + * + * Copyright (c) 2007-2013 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 __NAT64_DEFS_H__ +#define __NAT64_DEFS_H__ + +#ifdef TOBE_PORTED +#include "spp_platform_common.h" +#include "cgse_defs.h" +#include "xlat_defs.h" +#endif +#include "cnat_cli.h" +#include "cnat_ports.h" +#include "tcp_header_definitions.h" +#include "nat64_tcp_sm.h" +#include "cnat_db.h" + +#define NAT64_MAX_FRAG_ID_COUNTERS (256) + +#define NAT64_MAX_NAT64_ENTRIES 500 + +#define NAT64_MAX_ID (NAT64_MAX_NAT64_ENTRIES-1) + +#define NAT64_INVALID_ID (0) + +#define NAT64_MAX_CFG_INSTANCES 64 + +#define NAT64_TABLE_ENTRY_DELETED 0 +#define NAT64_TABLE_ENTRY_ACTIVE 1 +#define NAT64_TABLE_ENTRY_DORMANT 2 +#define NAT64_TABLE_ENTRY_INVALID_UIDB 3 + +#define NAT64_MAX_TRANSLATION_ENTRIES PLATFORM_MAX_TRANSLATION_ENTRIES + +#define NAT64_WKP_PREFIX_LEN 96 +#define NAT64_WKP_PREFIX_0 0x0064FF9B +#define NAT64_WKP_PREFIX_1 0x00000000 +#define NAT64_WKP_PREFIX_2 0x00000000 +#define NAT64_WKP_PREFIX_3 0x00000000 + + +/* Reset the expiry time only if it is not 0 +** if it is 0 - then queue for delete by clear command +**/ + +#define NAT64_TIMEOUT_RST(db) \ + if(PREDICT_TRUE(db->entry_expires !=0 )) \ + db->entry_expires = cnat_current_time; + +extern u32 nat64_config_debug_level; +extern u32 nat64_data_path_debug_level; + +extern u32 nat64_translation_create_count[NAT64_MAX_NAT64_ENTRIES]; +extern u32 nat64_translation_delete_count[NAT64_MAX_NAT64_ENTRIES]; +extern u32 nat64_translation_create_rate[NAT64_MAX_NAT64_ENTRIES]; +extern u32 nat64_translation_delete_rate[NAT64_MAX_NAT64_ENTRIES]; +extern u32 nat64_in2out_forwarding_count[NAT64_MAX_NAT64_ENTRIES]; +extern u32 nat64_in2out_forwarding_rate[NAT64_MAX_NAT64_ENTRIES]; +extern u32 nat64_out2in_forwarding_count[NAT64_MAX_NAT64_ENTRIES]; +extern u32 nat64_out2in_forwarding_rate[NAT64_MAX_NAT64_ENTRIES]; + +extern u32 nat64_translation_create_count_old[NAT64_MAX_NAT64_ENTRIES]; +extern u32 nat64_translation_delete_count_old[NAT64_MAX_NAT64_ENTRIES]; +extern u32 nat64_in2out_forwarding_count_old[NAT64_MAX_NAT64_ENTRIES]; +extern u32 nat64_out2in_forwarding_count_old[NAT64_MAX_NAT64_ENTRIES]; + +extern u16 *nat64_frag_id_counter_ptr; + +typedef struct { + u64 v6_to_v4_tcp_input_count; + u64 v6_to_v4_tcp_non_translatable_drop_count; + u64 v6_to_v4_tcp_state_drop_count; + u64 v6_to_v4_tcp_no_db_drop_count; + u64 v6_to_v4_tcp_output_count; +} nat64_v6_to_v4_tcp_counter_t; + +typedef struct { + u64 v4_to_v6_tcp_input_count; + u64 v4_to_v6_tcp_no_db_drop_count; + u64 v4_to_v6_tcp_v4_init_policy_drop_count; + u64 v4_to_v6_tcp_state_drop_count; + u64 v4_to_v6_tcp_output_count; + u64 v4_to_v6_tcp_filter_drop_count; +} nat64_v4_to_v6_tcp_counter_t; + +typedef struct { + u64 v6_to_v4_udp_input_count; + u64 v6_to_v4_udp_non_translatable_drop_count; + u64 v6_to_v4_udp_no_db_drop_count; + u64 v6_to_v4_udp_output_count; + u64 v6_to_v4_udp_checksum_zero_count; +} nat64_v6_to_v4_udp_counter_t; + +typedef struct { + u64 v4_to_v6_udp_input_count; + u64 v4_to_v6_udp_no_db_drop_count; + u64 v4_to_v6_udp_filter_drop_count; + u64 v4_to_v6_udp_output_count; + u64 v4_to_v6_udp_crc_zero_drop_count; + u64 v4_to_v6_udp_frag_crc_zero_drop_count; + u64 v4_to_v6_udp_crc_zero_recycle_sent_count; + u64 v4_to_v6_udp_crc_zero_recycle_drop_count; +} nat64_v4_to_v6_udp_counter_t; + +typedef struct { + u64 v6_to_v4_icmp_input_count; + u64 v6_to_v4_icmp_no_db_drop_count; + u64 v6_to_v4_icmp_non_translatable_drop_count; + u64 v6_to_v4_icmp_qry_output_count; +} nat64_v6_to_v4_icmp_counter_t; + +typedef struct { + u64 v4_to_v6_icmp_input_count; + u64 v4_to_v6_icmp_no_db_drop_count; + u64 v4_to_v6_icmp_filter_drop; + u64 v4_to_v6_icmp_qry_output_count; +} nat64_v4_to_v6_icmp_counter_t; + +typedef struct { + u64 v6_to_v4_icmp_error_input_count; + u64 v6_to_v4_icmp_error_no_db_drop_count; + u64 v6_to_v4_icmp_error_invalid_next_hdr_drop_count; + u64 v6_to_v4_icmp_error_non_translatable_drop_count; + u64 v6_to_v4_icmp_error_unsupported_type_drop_count; + u64 v6_to_v4_icmp_error_output_count; +} nat64_v6_to_v4_icmp_error_counter_t; + +typedef struct { + u64 v4_to_v6_icmp_error_input_count; + u64 v4_to_v6_icmp_error_no_db_drop_count; + u64 v4_to_v6_icmp_error_unsupported_type_drop_count; + u64 v4_to_v6_icmp_error_unsupported_protocol_drop_count; + u64 v4_to_v6_icmp_error_output_count; +} nat64_v4_to_v6_icmp_error_counter_t; + + + +typedef struct { + u64 nat64_v4_frag_input_count; + u64 nat64_v4_frag_forward_count; + u64 nat64_v4_frag_drop_count; + u64 nat64_v4_frag_throttled_count; + u64 nat64_v4_frag_timeout_drop_count; + u64 nat64_v4_frag_tcp_input_count; + u64 nat64_v4_frag_udp_input_count; + u64 nat64_v4_frag_icmp_input_count; + + u64 nat64_v6_frag_input_count; + u64 nat64_v6_frag_forward_count; + u64 nat64_v6_frag_drop_count; + u64 nat64_v6_frag_throttled_count; + u64 nat64_v6_frag_timeout_drop_count; + u64 nat64_v6_frag_tcp_input_count; + u64 nat64_v6_frag_udp_input_count; + u64 nat64_v6_frag_icmp_input_count; + u64 nat64_v6_frag_invalid_input_count; +} nat64_frag_counter_t; + +typedef struct { + u64 v6_to_v4_options_input_count; + u64 v6_to_v4_options_drop_count; + u64 v6_to_v4_options_forward_count; + u64 v6_to_v4_options_no_db_drop_count; + u64 v6_to_v4_unsupp_proto_count; + + u64 v4_to_v6_options_input_count; + u64 v4_to_v6_options_drop_count; + u64 v4_to_v6_options_forward_count; + u64 v4_to_v6_options_no_db_drop_count; + u64 v4_to_v6_unsupp_proto_count; +} nat64_options_counter_t; + +typedef struct { + u64 v4_icmp_gen_count; + u64 v6_icmp_gen_count; +} nat64_icmp_gen_counter_t; + +typedef struct{ + u32 nat64_num_translations; + u32 nat64_num_dynamic_translations; + u32 nat64_num_static_translations; + u32 nat64_sessions; + u64 nat64_port_limit_exceeded; + u64 nat64_system_limit_reached; + u64 nat64_resource_depletion_drops; + u64 nat64_no_translation_entry_drops; + u64 nat64_filtering_drops ; + u64 nat64_invalid_ipv6_prefix_drops; + u32 num_subscribers; + u32 dummy; + u64 drops_sessiondb_limit_exceeded; +} nat64_inst_gen_counter_t; + +typedef struct { + + nat64_v6_to_v4_tcp_counter_t v64_tcp_counters; + nat64_v4_to_v6_tcp_counter_t v46_tcp_counters; + nat64_v6_to_v4_udp_counter_t v64_udp_counters; + nat64_v4_to_v6_udp_counter_t v46_udp_counters; + nat64_v6_to_v4_icmp_counter_t v64_icmp_counters; + nat64_v4_to_v6_icmp_counter_t v46_icmp_counters; + nat64_v6_to_v4_icmp_error_counter_t v64_icmp_error_counters; + nat64_v4_to_v6_icmp_error_counter_t v46_icmp_error_counters; + nat64_frag_counter_t nat64_frag_counters; + nat64_options_counter_t nat64_options_counters; + nat64_icmp_gen_counter_t nat64_icmp_gen_counters; + +} nat64_counters_t; + +/* + * nat64_portmap_v2_t + * This structure stores information about the IP address and ports + * available for NAT for this nat64 instance. + */ + +typedef struct { + u32 delete_time; + u32 last_sent_timestamp; + u32 inuse; + u32 ipv4_address; /* native bit order */ + uword bm[(BITS_PER_INST + BITS(uword)-1)/BITS(uword)]; +} nat64_portmap_t; + +/* + * nat64_v4_db_key_t + * This structure gives information about the v4 transport address + * (ipv4, port, protocol) + */ +typedef struct { + u32 ipv4; + u16 port; + u16 vrf; //bit0-12:inst_id, bit13:unused, bit14-15:protocol +} nat64_v4_db_key_t; + +/* Union will be easier while compare/hash */ +typedef union { + nat64_v4_db_key_t k; + u64 key64; +} nat64_v4_key_t; +/* + * nat64_v6_db_key_t + * This structure gives information about the v6 transport address + * (ipv6, port, protocol) + */ +typedef struct { + u32 ipv6[4]; + u16 port; + u16 vrf; //bit0-12:inst_id, bit13:unused, bit14-15:protocol +} nat64_v6_key_t; + + +typedef struct { + u16 udp_timeout; + u16 tcp_trans_timeout; + u16 tcp_est_timeout; + u16 tcp_v4_init_timeout; + u16 frag_timeout; + u16 icmp_timeout; +} nat64_timeout_info_t; + +#define NAT64_UDP_DEF 300 /* 5min */ +#define NAT64_TCP_TRANS_DEF 240 /* 4min */ +#define NAT64_TCP_EST_DEF 7200 /* 2Hrs */ +#define NAT64_TCP_V4_DEF 6 /* 6 sec */ +#define NAT64_FRAG_DEF 2 /* 2 sec */ +#define NAT64_ICMP_DEF 60 /* 60 sec */ + +/* + * nat64_table_entry_t + * This structure is used to store information regarding every nat64 instance. + */ + +/* structure will hold the L4 information, of a particular frag stream set + * src_port - holds the original src port + * dst_port - holds the original dst port + * total_len - useful only in ICMP nodes + * cnat_port - vlaue used for looksups + * next_prot - Protocol after translation */ + +typedef struct l4_frag_info { + u16 next_node_idx; + u16 src_port; + u16 dst_port; + u16 total_length; + u8 protocol; + u16 cnat_prot; + u16 next_prot; +} l4_frag_info_t; + +typedef struct { + u16 state; + u16 nat64_id; /* nat64_id value for this table entry - for easy access */ + + u16 v4_uidb_index; /* V4 uidb index */ + u16 v6_uidb_index; /* V6 uidb index */ + + u8 octet0_position; + u8 octet1_position; + u8 octet2_position; + u8 octet3_position; + + u16 v4_to_v6_tcp_mss; /* TCP MSS */ + u16 v6_to_v4_tcp_mss; /* TCP MSS */ + + /* + * V6 NAT64 prefix value and mask size + */ + u32 v6_prefix[4]; + u32 v6_prefix_mask[4]; + + u8 v6_prefix_mask_len; + u8 ubits_reserved_on; +#define IPV4_TOS_OVERRIDE_FLAG 0x1 +#define IPV6_TOS_OVERRIDE_FLAG 0x2 +#define NAT64_STFUL_RTSP_ALG_ENABLE 0x4 + u8 feature_flags; + + u8 ipv4_tos_value; + u8 ipv6_tos_value; + u8 df_bit_clear; + u8 ipv6_mtu_set; + + u8 filtering_policy; +#define NAT64_ADDRESS_DEPENDENT_ENABLE 1 + u8 tcp_policy; +#define NAT64_TCP_SECURITY_FLAG_DISABLE 1 + u8 ftp_flags; + + u8 tcp_v4_init_enable; +#define NAT64_TCP_V4_INIT_ENABLE 1 + + u8 logging_policy; +#define NAT64_BIB_LOG_ENABLE 0 /* Default */ +#define NAT64_SESSION_LOG_ENABLE 1 + +#define NAT64_BIDIR_REFRESH 1 /* 1 - timer refresh in both direction */ +#define NAT64_UNIDIR_REFRESH 0 /* 0 - default (only v6 side refresh timer)*/ + + u8 nat64_refresh_both_direction; /* 0 - default (only v6 side refresh timer) */ +#define NAT64_BIDIR_REFRESH 1 /* 1 - timer refresh in both direction */ + + u8 udp_zero_checksum; /* 0 - default (calc checksum) */ +#define NAT64_UDP_ZERO_CHECKSUM_DROP 1 /* 1 -drop */ + + u16 port_limit; + + cnat_portmap_v2_t *port_map; + + u32 logging_index; + + nat64_timeout_info_t timeout_info; + /* + * These fields are not used much, let us keep it in the end + */ + u32 v4_vrf_id; /* V4 vrf id */ + u32 v6_vrf_id; /* V6 vrf id */ + + u32 v4_if_num; /* V4 SVI ifnum */ + u32 v6_if_num; /* V6 SVI ifnum */ + + u16 dyn_start_port; + + u16 pcp_server_port; + u32 pcp_server_addr[4]; + u32 rseed_ip; +#define NAT64_FRAG_ENABLE 1 +#define NAT64_FRAG_DISABLE 0 + u8 frag_state; + u8 nat64_enable; /* Enable/Disable this instance. */ + + u16 rtsp_port; + +} nat64_table_entry_t; + + + +extern nat64_table_entry_t nat64_table_array[NAT64_MAX_NAT64_ENTRIES]; +extern nat64_table_entry_t *nat64_table_ptr; +extern nat64_counters_t nat64_all_counters[NAT64_MAX_NAT64_ENTRIES]; +extern nat64_inst_gen_counter_t nat64_inst_gen_counters[NAT64_MAX_NAT64_ENTRIES]; + +typedef struct nat64_common_pipeline_data_ { +#ifdef TOBE_PORTED + spp_node_main_vector_t *nmv; +#endif + + u16 *nat64_id_ptr; + + nat64_table_entry_t *nat64_entry_ptr; + +} nat64_common_pipeline_data_t; + +typedef struct nat64_v6_to_v4_pipeline_data_ { + nat64_common_pipeline_data_t common_data; + + u32 bib_bucket; + u32 session_bucket; + + nat64_v6_key_t v6_in_key; + nat64_v6_key_t v6_dest_key; + + /* + * IPv6 Data, everthing in host order except for the addr fields + */ + u32 version_trafficclass_flowlabel; + + u16 payload_length; + u8 next_header; + u8 hop_limit; + + /* + * These Address fields are in Network Order, so that + * it is easy to extract the IPv4 address from them + */ + u32 ipv6_src[4]; + + u32 ipv6_dst[4]; + + u8 frag_next_header; + u8 frag_reserved; + u16 frag_offset_res_m; + u32 frag_identification; + + ipv4_header *ipv4_header; + union { + struct _v4_l4_info { + u8 *ipv4_l4_header; + u8 pad0; + u8 pad1; + u8 pad2; + u8 pad3; + } v4_l4_info; + struct _v4_icmp_info { + icmp_v4_t *ipv4_icmp_header; + u8 old_icmp_type; + u8 new_icmp_type; + u8 old_icmp_code; + u8 new_icmp_code; + u16 checksum; + u16 old_iden; // length (ICMP extn), ptr (param) + u16 new_iden; // ----- do ------------- + u16 old_seq; // MTU for PTB case + u16 new_seq; // ----- do ------------- + } v4_icmp_info; + struct _v4_udp_info { + udp_hdr_type_t *ipv4_udp_header; + u8 pad0; + u8 pad1; + u8 pad2; + u8 pad3; + } v4_udp_info; + struct _v4_tcp_info { + tcp_hdr_type *ipv4_tcp_header; + u16 old_src_port; + u16 new_src_port; + u16 dest_port; + nat64_tcp_events tcp_event; + } v4_tcp_info; + } l4_u; + + + l4_frag_info_t *frag_info; /* port for tcp/udp, ident - icmp */ + + + /* Counters will be added here */ + union { + nat64_v6_to_v4_tcp_counter_t *tcp_counter; + nat64_v6_to_v4_udp_counter_t *udp_counter; + nat64_v6_to_v4_icmp_counter_t *icmp_counter; + nat64_v6_to_v4_icmp_error_counter_t *icmp_error_counter; + nat64_frag_counter_t *frag_counter; + nat64_options_counter_t *options_counter; + } nat64_ctr_u; + nat64_icmp_gen_counter_t *icmp_gen_counter; +} nat64_v6_to_v4_pipeline_data_t; + + +typedef struct nat64_v4_to_v6_pipeline_data_ { + nat64_common_pipeline_data_t common_data; + + u32 bib_bucket; + u32 session_bucket; + + nat64_v4_key_t v4_src_key; /* Will be translated using Prefix */ + nat64_v4_key_t v4_dest_key; /* will be the out key for NAT64 */ + + /* + * IPv4 data + */ + u8 version_hdr_len_words; + u8 tos; + u16 total_len_bytes; + + u16 identification; + u16 frag_flags_offset; + + u8 ttl; + u8 protocol; + u16 l4_checksum; + + u32 ipv4_src_addr; + u32 ipv4_dst_addr; + + /* + * Pointers to IPv6 headers + */ + ipv6_header_t *ipv6_header; + ipv6_frag_header_t *ipv6_frag_header; + + union { + struct _v6_l4_info { + u8 *ipv6_l4_header; + u8 pad0; + u8 pad1; + u8 pad2; + u8 pad3; + } v6_l4_info; + struct _v6_icmp_info { + icmp_v6_t *ipv6_icmp_header; + u8 old_icmp_type; + u8 new_icmp_type; + u8 old_icmp_code; + u8 new_icmp_code; + u16 old_iden; // length (ICMP extn), ptr (param) + u16 new_iden; // ----- do ------------- + u16 old_seq; // MTU for PTB case + u16 new_seq; // ----- do ------------- + } v6_icmp_info; + struct _v6_udp_info { + udp_hdr_type_t *ipv6_udp_header; + u8 pad0; + u8 pad1; + u8 pad2; + u8 pad3; + } v6_udp_info; + struct _v6_tcp_info { + tcp_hdr_type *ipv6_tcp_header; + u16 old_dest_port; + u16 new_dest_port; + u16 src_port; + nat64_tcp_events tcp_event; + } v6_tcp_info; + } l4_u; + + l4_frag_info_t *frag_info; /* port for tcp/udp, ident - icmp */ + + /* Need to add counters here */ + union { + nat64_v4_to_v6_tcp_counter_t *tcp_counter; + nat64_v4_to_v6_udp_counter_t *udp_counter; + nat64_v4_to_v6_icmp_counter_t *icmp_counter; + nat64_v4_to_v6_icmp_error_counter_t *icmp_error_counter; + nat64_frag_counter_t *frag_counter; + nat64_options_counter_t *options_counter; + } nat64_ctr_u; + nat64_icmp_gen_counter_t *icmp_gen_counter; + +} nat64_v4_to_v6_pipeline_data_t; + +#endif |