Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/netinet6/ip_fw_nat64.h
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * $FreeBSD$ 30 */ 31 32 #ifndef _NETINET6_IP_FW_NAT64_H_ 33 #define _NETINET6_IP_FW_NAT64_H_ 34 35 struct ipfw_nat64stl_stats { 36 uint64_t opcnt64; /* 6to4 of packets translated */ 37 uint64_t opcnt46; /* 4to6 of packets translated */ 38 uint64_t ofrags; /* number of fragments generated */ 39 uint64_t ifrags; /* number of fragments received */ 40 uint64_t oerrors; /* number of output errors */ 41 uint64_t noroute4; 42 uint64_t noroute6; 43 uint64_t noproto; /* Protocol not supported */ 44 uint64_t nomem; /* mbuf allocation failed */ 45 uint64_t dropped; /* dropped due to some errors */ 46 }; 47 48 struct ipfw_nat64clat_stats { 49 uint64_t opcnt64; /* 6to4 of packets translated */ 50 uint64_t opcnt46; /* 4to6 of packets translated */ 51 uint64_t ofrags; /* number of fragments generated */ 52 uint64_t ifrags; /* number of fragments received */ 53 uint64_t oerrors; /* number of output errors */ 54 uint64_t noroute4; 55 uint64_t noroute6; 56 uint64_t noproto; /* Protocol not supported */ 57 uint64_t nomem; /* mbuf allocation failed */ 58 uint64_t dropped; /* dropped due to some errors */ 59 }; 60 61 struct ipfw_nat64lsn_stats { 62 uint64_t opcnt64; /* 6to4 of packets translated */ 63 uint64_t opcnt46; /* 4to6 of packets translated */ 64 uint64_t ofrags; /* number of fragments generated */ 65 uint64_t ifrags; /* number of fragments received */ 66 uint64_t oerrors; /* number of output errors */ 67 uint64_t noroute4; 68 uint64_t noroute6; 69 uint64_t noproto; /* Protocol not supported */ 70 uint64_t nomem; /* mbuf allocation failed */ 71 uint64_t dropped; /* dropped due to some errors */ 72 73 uint64_t nomatch4; /* No addr/port match */ 74 uint64_t jcalls; /* Number of job handler calls */ 75 uint64_t jrequests; /* Number of job requests */ 76 uint64_t jhostsreq; /* Number of job host requests */ 77 uint64_t jportreq; /* Number of portgroup requests */ 78 uint64_t jhostfails; /* Number of failed host allocs */ 79 uint64_t jportfails; /* Number of failed portgroup allocs */ 80 uint64_t jreinjected; /* Number of packets reinjected to q */ 81 uint64_t jmaxlen; /* Max queue length reached */ 82 uint64_t jnomem; /* No memory to alloc queue item */ 83 84 uint64_t screated; /* Number of states created */ 85 uint64_t sdeleted; /* Number of states deleted */ 86 uint64_t spgcreated; /* Number of portgroups created */ 87 uint64_t spgdeleted; /* Number of portgroups deleted */ 88 uint64_t hostcount; /* Number of hosts */ 89 uint64_t tcpchunks; /* Number of TCP chunks */ 90 uint64_t udpchunks; /* Number of UDP chunks */ 91 uint64_t icmpchunks; /* Number of ICMP chunks */ 92 93 uint64_t _reserved[4]; 94 }; 95 96 #define NAT64_LOG 0x0001 /* Enable logging via BPF */ 97 #define NAT64_ALLOW_PRIVATE 0x0002 /* Allow private IPv4 address 98 * translation 99 */ 100 typedef struct _ipfw_nat64stl_cfg { 101 char name[64]; /* NAT name */ 102 ipfw_obj_ntlv ntlv6; /* object name tlv */ 103 ipfw_obj_ntlv ntlv4; /* object name tlv */ 104 struct in6_addr prefix6; /* NAT64 prefix */ 105 uint8_t plen6; /* Prefix length */ 106 uint8_t set; /* Named instance set [0..31] */ 107 uint8_t spare[2]; 108 uint32_t flags; 109 } ipfw_nat64stl_cfg; 110 111 typedef struct _ipfw_nat64clat_cfg { 112 char name[64]; /* NAT name */ 113 struct in6_addr plat_prefix; /* NAT64 (PLAT) prefix */ 114 struct in6_addr clat_prefix; /* Client (CLAT) prefix */ 115 uint8_t plat_plen; /* PLAT Prefix length */ 116 uint8_t clat_plen; /* CLAT Prefix length */ 117 uint8_t set; /* Named instance set [0..31] */ 118 uint8_t spare; 119 uint32_t flags; 120 } ipfw_nat64clat_cfg; 121 122 /* 123 * NAT64LSN default configuration values 124 */ 125 #define NAT64LSN_MAX_PORTS 2048 /* Unused */ 126 #define NAT64LSN_JMAXLEN 2048 /* Max outstanding requests. */ 127 #define NAT64LSN_TCP_SYN_AGE 10 /* State's TTL after SYN received. */ 128 #define NAT64LSN_TCP_EST_AGE (2 * 3600) /* TTL for established connection */ 129 #define NAT64LSN_TCP_FIN_AGE 180 /* State's TTL after FIN/RST received */ 130 #define NAT64LSN_UDP_AGE 120 /* TTL for UDP states */ 131 #define NAT64LSN_ICMP_AGE 60 /* TTL for ICMP states */ 132 #define NAT64LSN_HOST_AGE 3600 /* TTL for stale host entry */ 133 #define NAT64LSN_PG_AGE 900 /* TTL for stale ports groups */ 134 135 typedef struct _ipfw_nat64lsn_cfg { 136 char name[64]; /* NAT name */ 137 uint32_t flags; 138 139 uint32_t max_ports; /* Unused */ 140 uint32_t agg_prefix_len; /* Unused */ 141 uint32_t agg_prefix_max; /* Unused */ 142 143 struct in_addr prefix4; 144 uint16_t plen4; /* Prefix length */ 145 uint16_t plen6; /* Prefix length */ 146 struct in6_addr prefix6; /* NAT64 prefix */ 147 uint32_t jmaxlen; /* Max jobqueue length */ 148 149 uint16_t min_port; /* Unused */ 150 uint16_t max_port; /* Unused */ 151 152 uint16_t nh_delete_delay;/* Stale host delete delay */ 153 uint16_t pg_delete_delay;/* Stale portgroup delete delay */ 154 uint16_t st_syn_ttl; /* TCP syn expire */ 155 uint16_t st_close_ttl; /* TCP fin expire */ 156 uint16_t st_estab_ttl; /* TCP established expire */ 157 uint16_t st_udp_ttl; /* UDP expire */ 158 uint16_t st_icmp_ttl; /* ICMP expire */ 159 uint8_t set; /* Named instance set [0..31] */ 160 uint8_t states_chunks; /* Number of states chunks per PG */ 161 } ipfw_nat64lsn_cfg; 162 163 typedef struct _ipfw_nat64lsn_state { 164 struct in_addr daddr; /* Remote IPv4 address */ 165 uint16_t dport; /* Remote destination port */ 166 uint16_t aport; /* Local alias port */ 167 uint16_t sport; /* Source port */ 168 uint8_t flags; /* State flags */ 169 uint8_t spare[3]; 170 uint16_t idle; /* Last used time */ 171 } ipfw_nat64lsn_state; 172 173 typedef struct _ipfw_nat64lsn_stg { 174 uint64_t next_idx; /* next state index */ 175 struct in_addr alias4; /* IPv4 alias address */ 176 uint8_t proto; /* protocol */ 177 uint8_t flags; 178 uint16_t spare; 179 struct in6_addr host6; /* Bound IPv6 host */ 180 uint32_t count; /* Number of states */ 181 uint32_t spare2; 182 } ipfw_nat64lsn_stg; 183 184 typedef struct _ipfw_nat64lsn_state_v1 { 185 struct in6_addr host6; /* Bound IPv6 host */ 186 struct in_addr daddr; /* Remote IPv4 address */ 187 uint16_t dport; /* Remote destination port */ 188 uint16_t aport; /* Local alias port */ 189 uint16_t sport; /* Source port */ 190 uint16_t spare; 191 uint16_t idle; /* Last used time */ 192 uint8_t flags; /* State flags */ 193 uint8_t proto; /* protocol */ 194 } ipfw_nat64lsn_state_v1; 195 196 typedef struct _ipfw_nat64lsn_stg_v1 { 197 union nat64lsn_pgidx { 198 uint64_t index; 199 struct { 200 uint8_t chunk; /* states chunk */ 201 uint8_t proto; /* protocol */ 202 uint16_t port; /* base port */ 203 in_addr_t addr; /* alias address */ 204 }; 205 } next; /* next state index */ 206 struct in_addr alias4; /* IPv4 alias address */ 207 uint32_t count; /* Number of states */ 208 } ipfw_nat64lsn_stg_v1; 209 210 #endif /* _NETINET6_IP_FW_NAT64_H_ */
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