#include "lwip/arch.h"

Include dependency graph for dns.h:

Classes
struct	dns_hdr

Macros
#define	DNS_SERVER_PORT 53

#define	DNS_RRTYPE_A 1 /* a host address */

#define	DNS_RRTYPE_NS 2 /* an authoritative name server */

#define	DNS_RRTYPE_MD 3 /* a mail destination (Obsolete - use MX) */

#define	DNS_RRTYPE_MF 4 /* a mail forwarder (Obsolete - use MX) */

#define	DNS_RRTYPE_CNAME 5 /* the canonical name for an alias */

#define	DNS_RRTYPE_SOA 6 /* marks the start of a zone of authority */

#define	DNS_RRTYPE_MB 7 /* a mailbox domain name (EXPERIMENTAL) */

#define	DNS_RRTYPE_MG 8 /* a mail group member (EXPERIMENTAL) */

#define	DNS_RRTYPE_MR 9 /* a mail rename domain name (EXPERIMENTAL) */

#define	DNS_RRTYPE_NULL 10 /* a null RR (EXPERIMENTAL) */

#define	DNS_RRTYPE_WKS 11 /* a well known service description */

#define	DNS_RRTYPE_PTR 12 /* a domain name pointer */

#define	DNS_RRTYPE_HINFO 13 /* host information */

#define	DNS_RRTYPE_MINFO 14 /* mailbox or mail list information */

#define	DNS_RRTYPE_MX 15 /* mail exchange */

#define	DNS_RRTYPE_TXT 16 /* text strings */

#define	DNS_RRTYPE_AAAA 28 /* IPv6 address */

#define	DNS_RRTYPE_SRV 33 /* service location */

#define	DNS_RRTYPE_ANY 255 /* any type */

#define	DNS_RRCLASS_IN 1 /* the Internet */

#define	DNS_RRCLASS_CS 2 /* the CSNET class (Obsolete - used only for examples in some obsolete RFCs) */

#define	DNS_RRCLASS_CH 3 /* the CHAOS class */

#define	DNS_RRCLASS_HS 4 /* Hesiod [Dyer 87] */

#define	DNS_RRCLASS_ANY 255 /* any class */

#define	DNS_RRCLASS_FLUSH 0x800 /* Flush bit */

#define	DNS_FLAG1_RESPONSE 0x80

#define	DNS_FLAG1_OPCODE_STATUS 0x10

#define	DNS_FLAG1_OPCODE_INVERSE 0x08

#define	DNS_FLAG1_OPCODE_STANDARD 0x00

#define	DNS_FLAG1_AUTHORATIVE 0x04

#define	DNS_FLAG1_TRUNC 0x02

#define	DNS_FLAG1_RD 0x01

#define	DNS_FLAG2_RA 0x80

#define	DNS_FLAG2_ERR_MASK 0x0f

#define	DNS_FLAG2_ERR_NONE 0x00

#define	DNS_FLAG2_ERR_NAME 0x03

#define	DNS_HDR_GET_OPCODE(hdr) ((((hdr)->flags1) >> 3) & 0xF)

#define	SIZEOF_DNS_HDR 12

#define	DNS_MQUERY_PORT 5353

#define	DNS_MQUERY_IPV4_GROUP_INIT IPADDR4_INIT_BYTES(224,0,0,251)

#define	DNS_MQUERY_IPV6_GROUP_INIT IPADDR6_INIT_HOST(0xFF020000,0,0,0xFB)

Variables
PACK_STRUCT_BEGIN struct dns_hdr	PACK_STRUCT_STRUCT

Detailed Description

DNS - host name to IP address resolver.

Macro Definition Documentation

◆ DNS_FLAG1_AUTHORATIVE

#define DNS_FLAG1_AUTHORATIVE 0x04

◆ DNS_FLAG1_OPCODE_INVERSE

#define DNS_FLAG1_OPCODE_INVERSE 0x08

◆ DNS_FLAG1_OPCODE_STANDARD

#define DNS_FLAG1_OPCODE_STANDARD 0x00

◆ DNS_FLAG1_OPCODE_STATUS

#define DNS_FLAG1_OPCODE_STATUS 0x10

◆ DNS_FLAG1_RD

#define DNS_FLAG1_RD 0x01

◆ DNS_FLAG1_RESPONSE

#define DNS_FLAG1_RESPONSE 0x80

◆ DNS_FLAG1_TRUNC

#define DNS_FLAG1_TRUNC 0x02

◆ DNS_FLAG2_ERR_MASK

#define DNS_FLAG2_ERR_MASK 0x0f

◆ DNS_FLAG2_ERR_NAME

#define DNS_FLAG2_ERR_NAME 0x03

◆ DNS_FLAG2_ERR_NONE

#define DNS_FLAG2_ERR_NONE 0x00

◆ DNS_FLAG2_RA

#define DNS_FLAG2_RA 0x80

◆ DNS_HDR_GET_OPCODE

#define DNS_HDR_GET_OPCODE ( hdr ) ((((hdr)->flags1) >> 3) & 0xF)

◆ DNS_MQUERY_IPV4_GROUP_INIT

#define DNS_MQUERY_IPV4_GROUP_INIT IPADDR4_INIT_BYTES(224,0,0,251)

◆ DNS_MQUERY_IPV6_GROUP_INIT

#define DNS_MQUERY_IPV6_GROUP_INIT IPADDR6_INIT_HOST(0xFF020000,0,0,0xFB)

◆ DNS_MQUERY_PORT

#define DNS_MQUERY_PORT 5353

UDP port for multicast DNS queries

◆ DNS_RRCLASS_ANY

#define DNS_RRCLASS_ANY 255 /* any class */

◆ DNS_RRCLASS_CH

#define DNS_RRCLASS_CH 3 /* the CHAOS class */

◆ DNS_RRCLASS_CS

#define DNS_RRCLASS_CS 2 /* the CSNET class (Obsolete - used only for examples in some obsolete RFCs) */

◆ DNS_RRCLASS_FLUSH

#define DNS_RRCLASS_FLUSH 0x800 /* Flush bit */

◆ DNS_RRCLASS_HS

#define DNS_RRCLASS_HS 4 /* Hesiod [Dyer 87] */

◆ DNS_RRCLASS_IN

#define DNS_RRCLASS_IN 1 /* the Internet */

◆ DNS_RRTYPE_A

#define DNS_RRTYPE_A 1 /* a host address */

◆ DNS_RRTYPE_AAAA

#define DNS_RRTYPE_AAAA 28 /* IPv6 address */

◆ DNS_RRTYPE_ANY

#define DNS_RRTYPE_ANY 255 /* any type */

◆ DNS_RRTYPE_CNAME

#define DNS_RRTYPE_CNAME 5 /* the canonical name for an alias */

◆ DNS_RRTYPE_HINFO

#define DNS_RRTYPE_HINFO 13 /* host information */

◆ DNS_RRTYPE_MB

#define DNS_RRTYPE_MB 7 /* a mailbox domain name (EXPERIMENTAL) */

◆ DNS_RRTYPE_MD

#define DNS_RRTYPE_MD 3 /* a mail destination (Obsolete - use MX) */

◆ DNS_RRTYPE_MF

#define DNS_RRTYPE_MF 4 /* a mail forwarder (Obsolete - use MX) */

◆ DNS_RRTYPE_MG

#define DNS_RRTYPE_MG 8 /* a mail group member (EXPERIMENTAL) */

◆ DNS_RRTYPE_MINFO

#define DNS_RRTYPE_MINFO 14 /* mailbox or mail list information */

◆ DNS_RRTYPE_MR

#define DNS_RRTYPE_MR 9 /* a mail rename domain name (EXPERIMENTAL) */

◆ DNS_RRTYPE_MX

#define DNS_RRTYPE_MX 15 /* mail exchange */

◆ DNS_RRTYPE_NS

#define DNS_RRTYPE_NS 2 /* an authoritative name server */

◆ DNS_RRTYPE_NULL

#define DNS_RRTYPE_NULL 10 /* a null RR (EXPERIMENTAL) */

◆ DNS_RRTYPE_PTR

#define DNS_RRTYPE_PTR 12 /* a domain name pointer */

◆ DNS_RRTYPE_SOA

#define DNS_RRTYPE_SOA 6 /* marks the start of a zone of authority */

◆ DNS_RRTYPE_SRV

#define DNS_RRTYPE_SRV 33 /* service location */

◆ DNS_RRTYPE_TXT

#define DNS_RRTYPE_TXT 16 /* text strings */

◆ DNS_RRTYPE_WKS

#define DNS_RRTYPE_WKS 11 /* a well known service description */

◆ DNS_SERVER_PORT

#define DNS_SERVER_PORT 53

DNS server port address

◆ SIZEOF_DNS_HDR

#define SIZEOF_DNS_HDR 12

Variable Documentation

◆ PACK_STRUCT_STRUCT

PACK_STRUCT_BEGIN struct dns_hdr PACK_STRUCT_STRUCT

Classes

Macros

Variables