1/*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2015-2019 Yandex LLC 5 * Copyright (c) 2015 Alexander V. Chernikov <melifaro@FreeBSD.org> 6 * Copyright (c) 2015-2019 Andrey V. Elsukov <ae@FreeBSD.org> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30#ifndef _NETINET6_IP_FW_NAT64_H_ 31#define _NETINET6_IP_FW_NAT64_H_ 32 33struct ipfw_nat64stl_stats { 34 uint64_t opcnt64; /* 6to4 of packets translated */ 35 uint64_t opcnt46; /* 4to6 of packets translated */ 36 uint64_t ofrags; /* number of fragments generated */ 37 uint64_t ifrags; /* number of fragments received */ 38 uint64_t oerrors; /* number of output errors */ 39 uint64_t noroute4; 40 uint64_t noroute6; 41 uint64_t noproto; /* Protocol not supported */ 42 uint64_t nomem; /* mbuf allocation failed */ 43 uint64_t dropped; /* dropped due to some errors */ 44}; 45 46struct ipfw_nat64clat_stats { 47 uint64_t opcnt64; /* 6to4 of packets translated */ 48 uint64_t opcnt46; /* 4to6 of packets translated */ 49 uint64_t ofrags; /* number of fragments generated */ 50 uint64_t ifrags; /* number of fragments received */ 51 uint64_t oerrors; /* number of output errors */ 52 uint64_t noroute4; 53 uint64_t noroute6; 54 uint64_t noproto; /* Protocol not supported */ 55 uint64_t nomem; /* mbuf allocation failed */ 56 uint64_t dropped; /* dropped due to some errors */ 57}; 58 59struct ipfw_nat64lsn_stats { 60 uint64_t opcnt64; /* 6to4 of packets translated */ 61 uint64_t opcnt46; /* 4to6 of packets translated */ 62 uint64_t ofrags; /* number of fragments generated */ 63 uint64_t ifrags; /* number of fragments received */ 64 uint64_t oerrors; /* number of output errors */ 65 uint64_t noroute4; 66 uint64_t noroute6; 67 uint64_t noproto; /* Protocol not supported */ 68 uint64_t nomem; /* mbuf allocation failed */ 69 uint64_t dropped; /* dropped due to some errors */ 70 71 uint64_t nomatch4; /* No addr/port match */ 72 uint64_t jcalls; /* Number of job handler calls */ 73 uint64_t jrequests; /* Number of job requests */ 74 uint64_t jhostsreq; /* Number of job host requests */ 75 uint64_t jportreq; /* Number of portgroup requests */ 76 uint64_t jhostfails; /* Number of failed host allocs */ 77 uint64_t jportfails; /* Number of failed portgroup allocs */ 78 uint64_t jreinjected; /* Number of packets reinjected to q */ 79 uint64_t jmaxlen; /* Max queue length reached */ 80 uint64_t jnomem; /* No memory to alloc queue item */ 81 82 uint64_t screated; /* Number of states created */ 83 uint64_t sdeleted; /* Number of states deleted */ 84 uint64_t spgcreated; /* Number of portgroups created */ 85 uint64_t spgdeleted; /* Number of portgroups deleted */ 86 uint64_t hostcount; /* Number of hosts */ 87 uint64_t tcpchunks; /* Number of TCP chunks */ 88 uint64_t udpchunks; /* Number of UDP chunks */ 89 uint64_t icmpchunks; /* Number of ICMP chunks */ 90 91 uint64_t _reserved[4]; 92}; 93 94#define NAT64_LOG 0x0001 /* Enable logging via BPF */ 95#define NAT64_ALLOW_PRIVATE 0x0002 /* Allow private IPv4 address 96 * translation 97 */ 98typedef struct _ipfw_nat64stl_cfg { 99 char name[64]; /* NAT name */ 100 ipfw_obj_ntlv ntlv6; /* object name tlv */ 101 ipfw_obj_ntlv ntlv4; /* object name tlv */ 102 struct in6_addr prefix6; /* NAT64 prefix */ 103 uint8_t plen6; /* Prefix length */ 104 uint8_t set; /* Named instance set [0..31] */ 105 uint8_t spare[2]; 106 uint32_t flags; 107} ipfw_nat64stl_cfg; 108 109typedef struct _ipfw_nat64clat_cfg { 110 char name[64]; /* NAT name */ 111 struct in6_addr plat_prefix; /* NAT64 (PLAT) prefix */ 112 struct in6_addr clat_prefix; /* Client (CLAT) prefix */ 113 uint8_t plat_plen; /* PLAT Prefix length */ 114 uint8_t clat_plen; /* CLAT Prefix length */ 115 uint8_t set; /* Named instance set [0..31] */ 116 uint8_t spare; 117 uint32_t flags; 118} ipfw_nat64clat_cfg; 119 120/* 121 * NAT64LSN default configuration values 122 */ 123#define NAT64LSN_MAX_PORTS 2048 /* Unused */ 124#define NAT64LSN_JMAXLEN 2048 /* Max outstanding requests. */ 125#define NAT64LSN_TCP_SYN_AGE 10 /* State's TTL after SYN received. */ 126#define NAT64LSN_TCP_EST_AGE (2 * 3600) /* TTL for established connection */ 127#define NAT64LSN_TCP_FIN_AGE 180 /* State's TTL after FIN/RST received */ 128#define NAT64LSN_UDP_AGE 120 /* TTL for UDP states */ 129#define NAT64LSN_ICMP_AGE 60 /* TTL for ICMP states */ 130#define NAT64LSN_HOST_AGE 3600 /* TTL for stale host entry */ 131#define NAT64LSN_PG_AGE 900 /* TTL for stale ports groups */ 132 133typedef struct _ipfw_nat64lsn_cfg { 134 char name[64]; /* NAT name */ 135 uint32_t flags; 136 137 uint32_t max_ports; /* Unused */ 138 uint32_t agg_prefix_len; /* Unused */ 139 uint32_t agg_prefix_max; /* Unused */ 140 141 struct in_addr prefix4; 142 uint16_t plen4; /* Prefix length */ 143 uint16_t plen6; /* Prefix length */ 144 struct in6_addr prefix6; /* NAT64 prefix */ 145 uint32_t jmaxlen; /* Max jobqueue length */ 146 147 uint16_t min_port; /* Unused */ 148 uint16_t max_port; /* Unused */ 149 150 uint16_t nh_delete_delay;/* Stale host delete delay */ 151 uint16_t pg_delete_delay;/* Stale portgroup delete delay */ 152 uint16_t st_syn_ttl; /* TCP syn expire */ 153 uint16_t st_close_ttl; /* TCP fin expire */ 154 uint16_t st_estab_ttl; /* TCP established expire */ 155 uint16_t st_udp_ttl; /* UDP expire */ 156 uint16_t st_icmp_ttl; /* ICMP expire */ 157 uint8_t set; /* Named instance set [0..31] */ 158 uint8_t states_chunks; /* Number of states chunks per PG */ 159} ipfw_nat64lsn_cfg; 160 161typedef struct _ipfw_nat64lsn_state { 162 struct in_addr daddr; /* Remote IPv4 address */ 163 uint16_t dport; /* Remote destination port */ 164 uint16_t aport; /* Local alias port */ 165 uint16_t sport; /* Source port */ 166 uint8_t flags; /* State flags */ 167 uint8_t spare[3]; 168 uint16_t idle; /* Last used time */ 169} ipfw_nat64lsn_state; 170 171typedef struct _ipfw_nat64lsn_stg { 172 uint64_t next_idx; /* next state index */ 173 struct in_addr alias4; /* IPv4 alias address */ 174 uint8_t proto; /* protocol */ 175 uint8_t flags; 176 uint16_t spare; 177 struct in6_addr host6; /* Bound IPv6 host */ 178 uint32_t count; /* Number of states */ 179 uint32_t spare2; 180} ipfw_nat64lsn_stg; 181 182typedef struct _ipfw_nat64lsn_state_v1 { 183 struct in6_addr host6; /* Bound IPv6 host */ 184 struct in_addr daddr; /* Remote IPv4 address */ 185 uint16_t dport; /* Remote destination port */ 186 uint16_t aport; /* Local alias port */ 187 uint16_t sport; /* Source port */ 188 uint16_t spare; 189 uint16_t idle; /* Last used time */ 190 uint8_t flags; /* State flags */ 191 uint8_t proto; /* protocol */ 192} ipfw_nat64lsn_state_v1; 193 194typedef struct _ipfw_nat64lsn_stg_v1 { 195 union nat64lsn_pgidx { 196 uint64_t index; 197 struct { 198 uint8_t chunk; /* states chunk */ 199 uint8_t proto; /* protocol */ 200 uint16_t port; /* base port */ 201 in_addr_t addr; /* alias address */ 202 }; 203 } next; /* next state index */ 204 struct in_addr alias4; /* IPv4 alias address */ 205 uint32_t count; /* Number of states */ 206} ipfw_nat64lsn_stg_v1; 207 208#endif /* _NETINET6_IP_FW_NAT64_H_ */ 209