ip_fw_nat64.h revision 346211
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: stable/11/sys/netinet6/ip_fw_nat64.h 346211 2019-04-14 12:35:58Z ae $ 30 */ 31 32#ifndef _NETINET6_IP_FW_NAT64_H_ 33#define _NETINET6_IP_FW_NAT64_H_ 34 35struct 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 48struct ipfw_nat64lsn_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 uint64_t nomatch4; /* No addr/port match */ 61 uint64_t jcalls; /* Number of job handler calls */ 62 uint64_t jrequests; /* Number of job requests */ 63 uint64_t jhostsreq; /* Number of job host requests */ 64 uint64_t jportreq; /* Number of portgroup requests */ 65 uint64_t jhostfails; /* Number of failed host allocs */ 66 uint64_t jportfails; /* Number of failed portgroup allocs */ 67 uint64_t jreinjected; /* Number of packets reinjected to q */ 68 uint64_t jmaxlen; /* Max queue length reached */ 69 uint64_t jnomem; /* No memory to alloc queue item */ 70 71 uint64_t screated; /* Number of states created */ 72 uint64_t sdeleted; /* Number of states deleted */ 73 uint64_t spgcreated; /* Number of portgroups created */ 74 uint64_t spgdeleted; /* Number of portgroups deleted */ 75 uint64_t hostcount; /* Number of hosts */ 76 uint64_t tcpchunks; /* Number of TCP chunks */ 77 uint64_t udpchunks; /* Number of UDP chunks */ 78 uint64_t icmpchunks; /* Number of ICMP chunks */ 79 80 uint64_t _reserved[4]; 81}; 82 83#define NAT64_LOG 0x0001 /* Enable logging via BPF */ 84#define NAT64_ALLOW_PRIVATE 0x0002 /* Allow private IPv4 address 85 * translation 86 */ 87typedef struct _ipfw_nat64stl_cfg { 88 char name[64]; /* NAT name */ 89 ipfw_obj_ntlv ntlv6; /* object name tlv */ 90 ipfw_obj_ntlv ntlv4; /* object name tlv */ 91 struct in6_addr prefix6; /* NAT64 prefix */ 92 uint8_t plen6; /* Prefix length */ 93 uint8_t set; /* Named instance set [0..31] */ 94 uint8_t spare[2]; 95 uint32_t flags; 96} ipfw_nat64stl_cfg; 97 98/* 99 * NAT64LSN default configuration values 100 */ 101#define NAT64LSN_MAX_PORTS 2048 /* Max number of ports per host */ 102#define NAT64LSN_JMAXLEN 2048 /* Max outstanding requests. */ 103#define NAT64LSN_TCP_SYN_AGE 10 /* State's TTL after SYN received. */ 104#define NAT64LSN_TCP_EST_AGE (2 * 3600) /* TTL for established connection */ 105#define NAT64LSN_TCP_FIN_AGE 180 /* State's TTL after FIN/RST received */ 106#define NAT64LSN_UDP_AGE 120 /* TTL for UDP states */ 107#define NAT64LSN_ICMP_AGE 60 /* TTL for ICMP states */ 108#define NAT64LSN_HOST_AGE 3600 /* TTL for stale host entry */ 109#define NAT64LSN_PG_AGE 900 /* TTL for stale ports groups */ 110 111typedef struct _ipfw_nat64lsn_cfg { 112 char name[64]; /* NAT name */ 113 uint32_t flags; 114 uint32_t max_ports; /* Max ports per client */ 115 uint32_t agg_prefix_len; /* Prefix length to count */ 116 uint32_t agg_prefix_max; /* Max hosts per agg prefix */ 117 struct in_addr prefix4; 118 uint16_t plen4; /* Prefix length */ 119 uint16_t plen6; /* Prefix length */ 120 struct in6_addr prefix6; /* NAT64 prefix */ 121 uint32_t jmaxlen; /* Max jobqueue length */ 122 uint16_t min_port; /* Min port group # to use */ 123 uint16_t max_port; /* Max port group # to use */ 124 uint16_t nh_delete_delay;/* Stale host delete delay */ 125 uint16_t pg_delete_delay;/* Stale portgroup delete delay */ 126 uint16_t st_syn_ttl; /* TCP syn expire */ 127 uint16_t st_close_ttl; /* TCP fin expire */ 128 uint16_t st_estab_ttl; /* TCP established expire */ 129 uint16_t st_udp_ttl; /* UDP expire */ 130 uint16_t st_icmp_ttl; /* ICMP expire */ 131 uint8_t set; /* Named instance set [0..31] */ 132 uint8_t spare; 133} ipfw_nat64lsn_cfg; 134 135typedef struct _ipfw_nat64lsn_state { 136 struct in_addr daddr; /* Remote IPv4 address */ 137 uint16_t dport; /* Remote destination port */ 138 uint16_t aport; /* Local alias port */ 139 uint16_t sport; /* Source port */ 140 uint8_t flags; /* State flags */ 141 uint8_t spare[3]; 142 uint16_t idle; /* Last used time */ 143} ipfw_nat64lsn_state; 144 145typedef struct _ipfw_nat64lsn_stg { 146 uint64_t next_idx; /* next state index */ 147 struct in_addr alias4; /* IPv4 alias address */ 148 uint8_t proto; /* protocol */ 149 uint8_t flags; 150 uint16_t spare; 151 struct in6_addr host6; /* Bound IPv6 host */ 152 uint32_t count; /* Number of states */ 153 uint32_t spare2; 154} ipfw_nat64lsn_stg; 155 156#endif /* _NETINET6_IP_FW_NAT64_H_ */ 157 158