dns_packet.h File Reference

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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

#define DNS_AA   (1<<10)

authoritative answer

Definition at line 45 of file dns_packet.h.

#define DNS_CLASS_IN   1

The Internet.

Definition at line 145 of file dns_packet.h.

#define DNS_OPCODE_IQUERY   (1<<11)

inverse query (deprecated)

Definition at line 48 of file dns_packet.h.

#define DNS_OPCODE_MASK   (0xf<<11)

opcode mask

Definition at line 46 of file dns_packet.h.

#define DNS_OPCODE_QUERY   (0<<11)

standard query

Definition at line 47 of file dns_packet.h.

#define DNS_OPCODE_STATUS   (2<<11)

server status

Definition at line 49 of file dns_packet.h.

#define DNS_QR   (1<<15)

query=0, response=1

Definition at line 50 of file dns_packet.h.

#define DNS_RA   (1<<7)

recursion available

Definition at line 42 of file dns_packet.h.

#define DNS_RCODE_FORMAT_ERROR   1

Definition at line 36 of file dns_packet.h.

#define DNS_RCODE_MASK   (0xf)

Definition at line 34 of file dns_packet.h.

#define DNS_RCODE_NAME_ERROR   3

Definition at line 38 of file dns_packet.h.

#define DNS_RCODE_NO_ERROR   0

Definition at line 35 of file dns_packet.h.

#define DNS_RCODE_NOT_IMPLEMENTED   4

Definition at line 39 of file dns_packet.h.

#define DNS_RCODE_REFUSED   5

Definition at line 40 of file dns_packet.h.

#define DNS_RCODE_SERVER_FAILURE   2

Definition at line 37 of file dns_packet.h.

#define DNS_RD   (1<<8)

recursion desired

Definition at line 43 of file dns_packet.h.

#define DNS_TC   (1<<9)

truncation

Definition at line 44 of file dns_packet.h.

#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

enum dns_type_t

Enumerator
foreach_dns_type

Definition at line 138 of file dns_packet.h.

Function Documentation

typedef CLIB_PACKED

(

struct{u16 id;u16 flags;u16 qdcount;u16 anscount;u16 nscount;u16 arcount;}

)

DNS packet header format.

typedef CLIB_PACKED

(

struct{u16 type;u16 class;}

)

DNS "question" fixed header.

typedef CLIB_PACKED

(

struct{u16 type;u16 class;u32 ttl;u16 rdlength;u8 rdata[0];}

)

DNS RR fixed header.