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Macros
#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 More...

#define	DNS_RD (1<<8)
	recursion desired More...

#define	DNS_TC (1<<9)
	truncation More...

#define	DNS_AA (1<<10)
	authoritative answer More...

#define	DNS_OPCODE_MASK (0xf<<11)
	opcode mask More...

#define	DNS_OPCODE_QUERY (0<<11)
	standard query More...

#define	DNS_OPCODE_IQUERY (1<<11)
	inverse query (deprecated) More...

#define	DNS_OPCODE_STATUS (2<<11)
	server status More...

#define	DNS_QR (1<<15)
	query=0, response=1 More...

#define	foreach_dns_type
	Host info. More...

#define	DNS_CLASS_IN 1
	The Internet. More...

Enumerations
enum	dns_type_t { foreach_dns_type }

Functions
typedef	CLIB_PACKED (struct { u16 id;u16 flags;u16 qdcount;u16 anscount;u16 nscount;u16 arcount;}) dns_header_t
	DNS packet header format. More...

typedef	CLIB_PACKED (struct { u16 type;u16 class;}) dns_query_t
	DNS "question" fixed header. More...

typedef	CLIB_PACKED (struct { u16 type;u16 class;u32 ttl;u16 rdlength;u8 rdata[0];}) dns_rr_t
	DNS RR fixed header. More...

Macro Definition Documentation

◆ DNS_AA

#define DNS_AA (1<<10)

authoritative answer

Definition at line 45 of file dns_packet.h.

◆ DNS_CLASS_IN

#define DNS_CLASS_IN 1

The Internet.

Definition at line 145 of file dns_packet.h.

◆ DNS_OPCODE_IQUERY

#define DNS_OPCODE_IQUERY (1<<11)

inverse query (deprecated)

Definition at line 48 of file dns_packet.h.

◆ DNS_OPCODE_MASK

#define DNS_OPCODE_MASK (0xf<<11)

opcode mask

Definition at line 46 of file dns_packet.h.

◆ DNS_OPCODE_QUERY

#define DNS_OPCODE_QUERY (0<<11)

standard query

Definition at line 47 of file dns_packet.h.

◆ DNS_OPCODE_STATUS

#define DNS_OPCODE_STATUS (2<<11)

server status

Definition at line 49 of file dns_packet.h.

◆ DNS_QR

#define DNS_QR (1<<15)

query=0, response=1

Definition at line 50 of file dns_packet.h.

◆ DNS_RA

#define DNS_RA (1<<7)

recursion available

Definition at line 42 of file dns_packet.h.

◆ DNS_RCODE_FORMAT_ERROR

#define DNS_RCODE_FORMAT_ERROR 1

Definition at line 36 of file dns_packet.h.

◆ DNS_RCODE_MASK

#define DNS_RCODE_MASK (0xf)

Definition at line 34 of file dns_packet.h.

◆ DNS_RCODE_NAME_ERROR

#define DNS_RCODE_NAME_ERROR 3

Definition at line 38 of file dns_packet.h.

◆ DNS_RCODE_NO_ERROR

#define DNS_RCODE_NO_ERROR 0

Definition at line 35 of file dns_packet.h.

◆ DNS_RCODE_NOT_IMPLEMENTED

#define DNS_RCODE_NOT_IMPLEMENTED 4

Definition at line 39 of file dns_packet.h.

◆ DNS_RCODE_REFUSED

#define DNS_RCODE_REFUSED 5

Definition at line 40 of file dns_packet.h.

◆ DNS_RCODE_SERVER_FAILURE

#define DNS_RCODE_SERVER_FAILURE 2

Definition at line 37 of file dns_packet.h.

◆ DNS_RD

#define DNS_RD (1<<8)

recursion desired

Definition at line 43 of file dns_packet.h.

◆ DNS_TC

#define DNS_TC (1<<9)

truncation

Definition at line 44 of file dns_packet.h.

◆ foreach_dns_type

#define foreach_dns_type

Value:

_(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.

Definition at line 127 of file dns_packet.h.

Enumeration Type Documentation

◆ dns_type_t

enum dns_type_t

Enumerator
foreach_dns_type

Definition at line 138 of file dns_packet.h.

Function Documentation

◆ CLIB_PACKED() [1/3]

typedef CLIB_PACKED ( struct { u16 id;u16 flags;u16 qdcount;u16 anscount;u16 nscount;u16 arcount;} )

DNS packet header format.

◆ CLIB_PACKED() [2/3]

typedef CLIB_PACKED ( struct { u16 type;u16 class;u32 ttl;u16 rdlength;u8 rdata[0];} )

DNS RR fixed header.

◆ CLIB_PACKED() [3/3]

typedef CLIB_PACKED ( struct { u16 type;u16 class;} )

DNS "question" fixed header.

Macros

Enumerations

Functions