The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/netgraph/ng_nat.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright 2005, Gleb Smirnoff <glebius@FreeBSD.org>
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD$
   29  */
   30 
   31 #define NG_NAT_NODE_TYPE    "nat"
   32 #define NGM_NAT_COOKIE      1107718711
   33 
   34 #define NG_NAT_HOOK_IN  "in"
   35 #define NG_NAT_HOOK_OUT "out"
   36 
   37 /* Arguments for NGM_NAT_SET_MODE message */
   38 struct ng_nat_mode {
   39         uint32_t        flags;
   40         uint32_t        mask;
   41 };
   42 
   43 /* Keep this in sync with the above structure definition */
   44 #define NG_NAT_MODE_INFO {                              \
   45           { "flags",    &ng_parse_uint32_type   },      \
   46           { "mask",     &ng_parse_uint32_type   },      \
   47           { NULL }                                      \
   48 }
   49 
   50 #define NG_NAT_LOG                      0x01
   51 #define NG_NAT_DENY_INCOMING            0x02
   52 #define NG_NAT_SAME_PORTS               0x04
   53 #define NG_NAT_UNREGISTERED_ONLY        0x10
   54 #define NG_NAT_RESET_ON_ADDR_CHANGE     0x20
   55 #define NG_NAT_PROXY_ONLY               0x40
   56 #define NG_NAT_REVERSE                  0x80
   57 #define NG_NAT_UNREGISTERED_CGN         0x100
   58 
   59 #define NG_NAT_DESC_LENGTH      64
   60 #define NG_NAT_REDIRPROTO_ADDR  (IPPROTO_MAX + 3)       /* LibAlias' LINK_ADDR, also unused in in.h */
   61 
   62 /* Arguments for NGM_NAT_REDIRECT_PORT message */
   63 struct ng_nat_redirect_port {
   64         struct in_addr  local_addr;
   65         struct in_addr  alias_addr;
   66         struct in_addr  remote_addr;
   67         uint16_t        local_port;
   68         uint16_t        alias_port;
   69         uint16_t        remote_port;
   70         uint8_t         proto;
   71         char            description[NG_NAT_DESC_LENGTH];
   72 };
   73 
   74 /* Keep this in sync with the above structure definition */
   75 #define NG_NAT_REDIRECT_PORT_TYPE_INFO(desctype) {              \
   76           { "local_addr",       &ng_parse_ipaddr_type   },      \
   77           { "alias_addr",       &ng_parse_ipaddr_type   },      \
   78           { "remote_addr",      &ng_parse_ipaddr_type   },      \
   79           { "local_port",       &ng_parse_uint16_type   },      \
   80           { "alias_port",       &ng_parse_uint16_type   },      \
   81           { "remote_port",      &ng_parse_uint16_type   },      \
   82           { "proto",            &ng_parse_uint8_type    },      \
   83           { "description",      (desctype)              },      \
   84           { NULL }                                              \
   85 }
   86 
   87 /* Arguments for NGM_NAT_REDIRECT_ADDR message */
   88 struct ng_nat_redirect_addr {
   89         struct in_addr  local_addr;
   90         struct in_addr  alias_addr;
   91         char            description[NG_NAT_DESC_LENGTH];
   92 };
   93 
   94 /* Keep this in sync with the above structure definition */
   95 #define NG_NAT_REDIRECT_ADDR_TYPE_INFO(desctype) {              \
   96           { "local_addr",       &ng_parse_ipaddr_type   },      \
   97           { "alias_addr",       &ng_parse_ipaddr_type   },      \
   98           { "description",      (desctype)              },      \
   99           { NULL }                                              \
  100 }
  101 
  102 /* Arguments for NGM_NAT_REDIRECT_PROTO message */
  103 struct ng_nat_redirect_proto {
  104         struct in_addr  local_addr;
  105         struct in_addr  alias_addr;
  106         struct in_addr  remote_addr;
  107         uint8_t         proto;
  108         char            description[NG_NAT_DESC_LENGTH];
  109 };
  110 
  111 /* Keep this in sync with the above structure definition */
  112 #define NG_NAT_REDIRECT_PROTO_TYPE_INFO(desctype) {             \
  113           { "local_addr",       &ng_parse_ipaddr_type   },      \
  114           { "alias_addr",       &ng_parse_ipaddr_type   },      \
  115           { "remote_addr",      &ng_parse_ipaddr_type   },      \
  116           { "proto",            &ng_parse_uint8_type    },      \
  117           { "description",      (desctype)              },      \
  118           { NULL }                                              \
  119 }
  120 
  121 /* Arguments for NGM_NAT_ADD_SERVER message */
  122 struct ng_nat_add_server {
  123         uint32_t        id;
  124         struct in_addr  addr;
  125         uint16_t        port;
  126 };
  127 
  128 /* Keep this in sync with the above structure definition */
  129 #define NG_NAT_ADD_SERVER_TYPE_INFO {                           \
  130           { "id",               &ng_parse_uint32_type   },      \
  131           { "addr",             &ng_parse_ipaddr_type   },      \
  132           { "port",             &ng_parse_uint16_type   },      \
  133           { NULL }                                              \
  134 }
  135 
  136 /* List entry of array returned in NGM_NAT_LIST_REDIRECTS message */
  137 struct ng_nat_listrdrs_entry {
  138         uint32_t        id;             /* Anything except zero */
  139         struct in_addr  local_addr;
  140         struct in_addr  alias_addr;
  141         struct in_addr  remote_addr;
  142         uint16_t        local_port;
  143         uint16_t        alias_port;
  144         uint16_t        remote_port;
  145         uint16_t        proto;          /* Valid proto or NG_NAT_REDIRPROTO_ADDR */
  146         uint16_t        lsnat;          /* LSNAT servers count */
  147         char            description[NG_NAT_DESC_LENGTH];
  148 };
  149 
  150 /* Keep this in sync with the above structure definition */
  151 #define NG_NAT_LISTRDRS_ENTRY_TYPE_INFO(desctype) {                     \
  152           { "id",               &ng_parse_uint32_type   },      \
  153           { "local_addr",       &ng_parse_ipaddr_type   },      \
  154           { "alias_addr",       &ng_parse_ipaddr_type   },      \
  155           { "remote_addr",      &ng_parse_ipaddr_type   },      \
  156           { "local_port",       &ng_parse_uint16_type   },      \
  157           { "alias_port",       &ng_parse_uint16_type   },      \
  158           { "remote_port",      &ng_parse_uint16_type   },      \
  159           { "proto",            &ng_parse_uint16_type   },      \
  160           { "lsnat",            &ng_parse_uint16_type   },      \
  161           { "description",      (desctype)              },      \
  162           { NULL }                                              \
  163 }
  164 
  165 /* Structure returned by NGM_NAT_LIST_REDIRECTS */
  166 struct ng_nat_list_redirects {
  167         uint32_t                total_count;
  168         struct ng_nat_listrdrs_entry redirects[];
  169 };
  170 
  171 /* Keep this in sync with the above structure definition */
  172 #define NG_NAT_LIST_REDIRECTS_TYPE_INFO(redirtype) {            \
  173           { "total_count",      &ng_parse_uint32_type   },      \
  174           { "redirects",        (redirtype)             },      \
  175           { NULL }                                              \
  176 }
  177 
  178 /* Structure returned by NGM_NAT_LIBALIAS_INFO */
  179 struct ng_nat_libalias_info {
  180         uint32_t        icmpLinkCount;
  181         uint32_t        udpLinkCount;
  182         uint32_t        tcpLinkCount;
  183         uint32_t        sctpLinkCount;
  184         uint32_t        pptpLinkCount;
  185         uint32_t        protoLinkCount;
  186         uint32_t        fragmentIdLinkCount;
  187         uint32_t        fragmentPtrLinkCount;
  188         uint32_t        sockCount;
  189 };
  190 
  191 /* Keep this in sync with the above structure definition */
  192 #define NG_NAT_LIBALIAS_INFO {                                  \
  193           { "icmpLinkCount",    &ng_parse_uint32_type   },      \
  194           { "udpLinkCount",     &ng_parse_uint32_type   },      \
  195           { "tcpLinkCount",     &ng_parse_uint32_type   },      \
  196           { "sctpLinkCount",    &ng_parse_uint32_type   },      \
  197           { "pptpLinkCount",    &ng_parse_uint32_type   },      \
  198           { "protoLinkCount",   &ng_parse_uint32_type   },      \
  199           { "fragmentIdLinkCount", &ng_parse_uint32_type },     \
  200           { "fragmentPtrLinkCount", &ng_parse_uint32_type },    \
  201           { "sockCount",        &ng_parse_uint32_type   },      \
  202           { NULL }                                              \
  203 }
  204 
  205 enum {
  206         NGM_NAT_SET_IPADDR = 1,
  207         NGM_NAT_SET_MODE,
  208         NGM_NAT_SET_TARGET,
  209         NGM_NAT_REDIRECT_PORT,
  210         NGM_NAT_REDIRECT_ADDR,
  211         NGM_NAT_REDIRECT_PROTO,
  212         NGM_NAT_REDIRECT_DYNAMIC,
  213         NGM_NAT_REDIRECT_DELETE,
  214         NGM_NAT_ADD_SERVER,
  215         NGM_NAT_LIST_REDIRECTS,
  216         NGM_NAT_PROXY_RULE,
  217         NGM_NAT_LIBALIAS_INFO,
  218         NGM_NAT_SET_DLT,
  219         NGM_NAT_GET_DLT,
  220 };

Cache object: 07880fd4f99b520a840b1d4c0dfeb6a9


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