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Diffstat (limited to 'src/vnet/dns/dns_packet.h')
| -rw-r--r-- | src/vnet/dns/dns_packet.h | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/src/vnet/dns/dns_packet.h b/src/vnet/dns/dns_packet.h deleted file mode 100644 index da5ddfa64fe..00000000000 --- a/src/vnet/dns/dns_packet.h +++ /dev/null @@ -1,156 +0,0 @@ -/* - * Copyright (c) 2015 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 included_dns_packet_h -#define included_dns_packet_h - -/** - * DNS packet header format - */ - -/* *INDENT-OFF* */ -typedef CLIB_PACKED (struct { - u16 id; /**< transaction ID */ - u16 flags; /**< flags */ - u16 qdcount; /**< number of questions */ - u16 anscount; /**< number of answers */ - u16 nscount; /**< number of name servers */ - u16 arcount; /**< number of additional records */ -}) dns_header_t; -/* *INDENT-ON* */ - -#define DNS_RCODE_MASK (0xf) -#define DNS_RCODE_NO_ERROR 0 -#define DNS_RCODE_FORMAT_ERROR 1 -#define DNS_RCODE_SERVER_FAILURE 2 -#define DNS_RCODE_NAME_ERROR 3 -#define DNS_RCODE_NOT_IMPLEMENTED 4 -#define DNS_RCODE_REFUSED 5 - -#define DNS_RA (1<<7) /**< recursion available */ -#define DNS_RD (1<<8) /**< recursion desired */ -#define DNS_TC (1<<9) /**< truncation */ -#define DNS_AA (1<<10) /**< authoritative answer */ -#define DNS_OPCODE_MASK (0xf<<11) /**< opcode mask */ -#define DNS_OPCODE_QUERY (0<<11) /**< standard query */ -#define DNS_OPCODE_IQUERY (1<<11) /**< inverse query (deprecated) */ -#define DNS_OPCODE_STATUS (2<<11) /**< server status */ -#define DNS_QR (1<<15) /**< query=0, response=1 */ - - -/* - * Note: in DNS-land, www.foobar.com is encoded as three "labels," - * each of which amount to a 1 octet length followed by up to 63 - * octets of name. Don't forget to add a "null root label" after the last - * real one, or the poor slob trying to parse the name will have - * no chance whatsoever. - * - * All RRs have the same top level format shown below: - * - * 1 1 1 1 1 1 - * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | | - * / / - * / NAME / - * | | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | TYPE | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | CLASS | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | TTL | - * | | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | RDLENGTH | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--| - * / RDATA / - * / / - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * - * - * DNS "questions" have the following format: - * - * 1 1 1 1 1 1 - * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | | - * / QNAME / - * / / - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | QTYPE | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - * | QCLASS | - * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ - */ - -/** - * DNS "question" fixed header. - */ -/* *INDENT-OFF* */ -typedef CLIB_PACKED (struct { - u16 type; /**< record type requested */ - u16 class; /**< class, 1 = internet */ -}) dns_query_t; -/* *INDENT-ON* */ - -/** - * DNS RR fixed header. - */ -/* *INDENT-OFF* */ -typedef CLIB_PACKED (struct { - u16 type; /**< record type */ - u16 class; /**< class, 1 = internet */ - u32 ttl; /**< time to live, in seconds */ - u16 rdlength; - /**< length of r */ - u8 rdata[0]; -}) dns_rr_t; -/* *INDENT-ON* */ - -/* - * There are quite a number of DNS record types - * Feel free to add as needed - */ -#define foreach_dns_type \ -_(A, 1) /**< ip4 host address */ \ -_(AAAA, 28) /**< ip6 host address */ \ -_(ALL, 255) /**< all available data */ \ -_(TEXT, 16) /**< a text string */ \ -_(NAMESERVER, 2) /**< a nameserver */ \ -_(CNAME, 5) /**< a CNAME (alias) */ \ -_(MAIL_EXCHANGE, 15) /**< a mail exchange */ \ -_(PTR, 12) /**< a PTR (pointer) record */ \ -_(HINFO, 13) /**< Host info */ - -typedef enum -{ -#define _(name,value) DNS_TYPE_##name = value, - foreach_dns_type -#undef _ -} dns_type_t; - -#define DNS_CLASS_IN 1 /**< The Internet */ - - -#endif /* included_dns_packet_h */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |