dns.c File Reference

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Macros
#define	vl_typedefs   /* define message structures */
#define	vl_endianfun   /* define message structures */
#define	vl_print(handle, ...)   vlib_cli_output (handle, __VA_ARGS__)
#define	vl_printfun
#define	foreach_notification_to_move   _(pending_requests)
#define	vl_msg_name_crc_list
#define	foreach_dns_api_msg
#define	DNS_FORMAT_TEST   1

Functions
static int	dns_cache_clear (dns_main_t *dm)
static int	dns_enable_disable (dns_main_t *dm, int is_enable)
static void	vl_api_dns_enable_disable_t_handler (vl_api_dns_enable_disable_t *mp)
static int	dns6_name_server_add_del (dns_main_t *dm, u8 *server_address_as_u8, int is_add)
static int	dns4_name_server_add_del (dns_main_t *dm, u8 *server_address_as_u8, int is_add)
static void	vl_api_dns_name_server_add_del_t_handler (vl_api_dns_name_server_add_del_t *mp)
void	vnet_dns_send_dns4_request (dns_main_t *dm, dns_cache_entry_t *ep, ip4_address_t *server)
void	vnet_dns_send_dns6_request (dns_main_t *dm, dns_cache_entry_t *ep, ip6_address_t *server)
u8 *	name_to_labels (u8 *name)
	Translate "foo.com" into "0x3 f o o 0x3 c o m 0x0" A historical / hysterical micro-TLV scheme. More...
u8 *	vnet_dns_labels_to_name (u8 *label, u8 *full_text, u8 **parse_from_here)
	arc-function for the above. More...
void	vnet_send_dns_request (dns_main_t *dm, dns_cache_entry_t *ep)
int	vnet_dns_delete_entry_by_index_nolock (dns_main_t *dm, u32 index)
static int	dns_delete_by_name (dns_main_t *dm, u8 *name)
static int	delete_random_entry (dns_main_t *dm)
static int	dns_add_static_entry (dns_main_t *dm, u8 *name, u8 *dns_reply_data)
int	vnet_dns_resolve_name (dns_main_t *dm, u8 *name, dns_pending_request_t *t, dns_cache_entry_t **retp)
int	vnet_dns_cname_indirection_nolock (dns_main_t *dm, u32 ep_index, u8 *reply)
	Handle cname indirection. More...
int	vnet_dns_response_to_reply (u8 *response, vl_api_dns_resolve_name_reply_t *rmp, u32 *min_ttlp)
int	vnet_dns_response_to_name (u8 *response, vl_api_dns_resolve_ip_reply_t *rmp, u32 *min_ttlp)
static void	vl_api_dns_resolve_name_t_handler (vl_api_dns_resolve_name_t *mp)
static void	vl_api_dns_resolve_ip_t_handler (vl_api_dns_resolve_ip_t *mp)
static void	setup_message_id_table (api_main_t *am)
static clib_error_t *	dns_api_hookup (vlib_main_t *vm)
	VLIB_API_INIT_FUNCTION (dns_api_hookup)
static clib_error_t *	dns_config_fn (vlib_main_t *vm, unformat_input_t *input)
static clib_error_t *	dns_init (vlib_main_t *vm)
uword	unformat_dns_reply (unformat_input_t *input, va_list *args)
u8 *	format_dns_query (u8 *s, va_list *args)
u8 *	format_dns_reply_data (u8 *s, va_list *args)
	format dns reply data verbose > 1, dump everything verbose == 1, dump all A and AAAA records verbose == 0, dump one A record, and one AAAA record More...
u8 *	format_dns_reply (u8 *s, va_list *args)
u8 *	format_dns_cache (u8 *s, va_list *args)
static clib_error_t *	show_dns_cache_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	dns_cache_add_del_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	test_dns_fmt_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	test_dns_unfmt_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	test_dns_expire_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
void	vnet_send_dns6_reply (dns_main_t *dm, dns_pending_request_t *pr, dns_cache_entry_t *ep, vlib_buffer_t *b0)
void	vnet_send_dns4_reply (dns_main_t *dm, dns_pending_request_t *pr, dns_cache_entry_t *ep, vlib_buffer_t *b0)

Variables
dns_main_t	dns_main
vlib_cli_command_t	show_dns_cache_command
	(constructor) VLIB_CLI_COMMAND (show_dns_cache_command) More...
vlib_cli_command_t	dns_cache_add_del_command
	(constructor) VLIB_CLI_COMMAND (dns_cache_add_del_command) More...
static u8	dns_reply_data_initializer []
vlib_cli_command_t	test_dns_fmt_command
	(constructor) VLIB_CLI_COMMAND (test_dns_fmt_command) More...
vlib_cli_command_t	test_dns_unfmt_command
	(constructor) VLIB_CLI_COMMAND (test_dns_unfmt_command) More...
vlib_cli_command_t	test_dns_expire_command
	(constructor) VLIB_CLI_COMMAND (test_dns_expire_command) More...

Macro Definition Documentation

DNS_FORMAT_TEST

#define DNS_FORMAT_TEST   1

Definition at line 2389 of file dns.c.

foreach_dns_api_msg

#define foreach_dns_api_msg

Value:

_(DNS_ENABLE_DISABLE, dns_enable_disable)               \
_(DNS_NAME_SERVER_ADD_DEL, dns_name_server_add_del)     \
_(DNS_RESOLVE_NAME, dns_resolve_name)                   \
_(DNS_RESOLVE_IP, dns_resolve_ip)

Definition at line 1561 of file dns.c.

foreach_notification_to_move

#define foreach_notification_to_move   _(pending_requests)

Definition at line 946 of file dns.c.

vl_endianfun

#define vl_endianfun   /* define message structures */

Definition at line 30 of file dns.c.

vl_msg_name_crc_list

#define vl_msg_name_crc_list

Definition at line 1549 of file dns.c.

vl_print

#define vl_print	(		handle,
			...
	)		vlib_cli_output (handle, __VA_ARGS__)

Definition at line 35 of file dns.c.

vl_printfun

#define vl_printfun

Definition at line 36 of file dns.c.

vl_typedefs

#define vl_typedefs   /* define message structures */

Definition at line 26 of file dns.c.

Function Documentation

delete_random_entry()

static int delete_random_entry ( dns_main_t *  dm )

static

Definition at line 713 of file dns.c.

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dns4_name_server_add_del()

static int dns4_name_server_add_del ( dns_main_t *  dm, u8 *  server_address_as_u8, int  is_add  )

static

Definition at line 168 of file dns.c.

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dns6_name_server_add_del()

static int dns6_name_server_add_del ( dns_main_t *  dm, u8 *  server_address_as_u8, int  is_add  )

static

Definition at line 132 of file dns.c.

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dns_add_static_entry()

static int dns_add_static_entry ( dns_main_t *  dm, u8 *  name, u8 *  dns_reply_data  )

static

Definition at line 760 of file dns.c.

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dns_api_hookup()

static clib_error_t* dns_api_hookup ( vlib_main_t *  vm )

static

Definition at line 1568 of file dns.c.

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dns_cache_add_del_command_fn()

static clib_error_t* dns_cache_add_del_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 2289 of file dns.c.

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dns_cache_clear()

static int dns_cache_clear ( dns_main_t *  dm )

static

Definition at line 45 of file dns.c.

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dns_config_fn()

static clib_error_t* dns_config_fn ( vlib_main_t *  vm, unformat_input_t *  input  )

static

Definition at line 1588 of file dns.c.

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dns_delete_by_name()

static int dns_delete_by_name ( dns_main_t *  dm, u8 *  name  )

static

Definition at line 690 of file dns.c.

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dns_enable_disable()

static int dns_enable_disable ( dns_main_t *  dm, int  is_enable  )

static

Definition at line 71 of file dns.c.

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dns_init()

static clib_error_t* dns_init ( vlib_main_t *  vm )

static

Definition at line 1608 of file dns.c.

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format_dns_cache()

u8* format_dns_cache	(	u8 *	s,
		va_list *	args
	)

Definition at line 2118 of file dns.c.

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format_dns_query()

u8* format_dns_query	(	u8 *	s,
		va_list *	args
	)

Definition at line 1728 of file dns.c.

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format_dns_reply()

u8* format_dns_reply	(	u8 *	s,
		va_list *	args
	)

Definition at line 2058 of file dns.c.

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format_dns_reply_data()

u8* format_dns_reply_data	(	u8 *	s,
		va_list *	args
	)

format dns reply data verbose > 1, dump everything verbose == 1, dump all A and AAAA records verbose == 0, dump one A record, and one AAAA record

Definition at line 1792 of file dns.c.

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name_to_labels()

u8* name_to_labels

(

u8 *

name

)

Translate "foo.com" into "0x3 f o o 0x3 c o m 0x0" A historical / hysterical micro-TLV scheme.

DGMS.

Definition at line 448 of file dns.c.

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setup_message_id_table()

static void setup_message_id_table ( api_main_t *  am )

static

Definition at line 1554 of file dns.c.

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show_dns_cache_command_fn()

static clib_error_t* show_dns_cache_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 2253 of file dns.c.

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test_dns_expire_command_fn()

static clib_error_t* test_dns_expire_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 2682 of file dns.c.

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test_dns_fmt_command_fn()

static clib_error_t* test_dns_fmt_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 2576 of file dns.c.

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test_dns_unfmt_command_fn()

static clib_error_t* test_dns_unfmt_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 2642 of file dns.c.

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unformat_dns_reply()

uword unformat_dns_reply	(	unformat_input_t *	input,
		va_list *	args
	)

Definition at line 1624 of file dns.c.

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vl_api_dns_enable_disable_t_handler()

static void vl_api_dns_enable_disable_t_handler ( vl_api_dns_enable_disable_t *  mp )

static

Definition at line 120 of file dns.c.

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vl_api_dns_name_server_add_del_t_handler()

static void vl_api_dns_name_server_add_del_t_handler ( vl_api_dns_name_server_add_del_t *  mp )

static

Definition at line 204 of file dns.c.

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vl_api_dns_resolve_ip_t_handler()

static void vl_api_dns_resolve_ip_t_handler ( vl_api_dns_resolve_ip_t *  mp )

static

Definition at line 1470 of file dns.c.

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vl_api_dns_resolve_name_t_handler()

static void vl_api_dns_resolve_name_t_handler ( vl_api_dns_resolve_name_t *  mp )

static

Definition at line 1426 of file dns.c.

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VLIB_API_INIT_FUNCTION()

VLIB_API_INIT_FUNCTION

(

dns_api_hookup

)

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vnet_dns_cname_indirection_nolock()

int vnet_dns_cname_indirection_nolock	(	dns_main_t *	dm,
		u32	ep_index,
		u8 *	reply
	)

Handle cname indirection.

JFC. Called with the cache locked. returns 0 if the reply is not a CNAME.

Definition at line 955 of file dns.c.

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vnet_dns_delete_entry_by_index_nolock()

int vnet_dns_delete_entry_by_index_nolock	(	dns_main_t *	dm,
		u32	index
	)

Definition at line 656 of file dns.c.

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vnet_dns_labels_to_name()

u8* vnet_dns_labels_to_name	(	u8 *	label,
		u8 *	full_text,
		u8 **	parse_from_here
	)

arc-function for the above.

Translate "0x3 f o o 0x3 c o m 0x0" into "foo.com" Produces a non-NULL-terminated u8 *vector. v format is your friend.

Definition at line 491 of file dns.c.

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vnet_dns_resolve_name()

int vnet_dns_resolve_name	(	dns_main_t *	dm,
		u8 *	name,
		dns_pending_request_t *	t,
		dns_cache_entry_t **	retp
	)

Definition at line 802 of file dns.c.

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vnet_dns_response_to_name()

int vnet_dns_response_to_name	(	u8 *	response,
		vl_api_dns_resolve_ip_reply_t *	rmp,
		u32 *	min_ttlp
	)

Definition at line 1290 of file dns.c.

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vnet_dns_response_to_reply()

int vnet_dns_response_to_reply	(	u8 *	response,
		vl_api_dns_resolve_name_reply_t *	rmp,
		u32 *	min_ttlp
	)

Definition at line 1149 of file dns.c.

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vnet_dns_send_dns4_request()

void vnet_dns_send_dns4_request	(	dns_main_t *	dm,
		dns_cache_entry_t *	ep,
		ip4_address_t *	server
	)

Definition at line 219 of file dns.c.

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vnet_dns_send_dns6_request()

void vnet_dns_send_dns6_request	(	dns_main_t *	dm,
		dns_cache_entry_t *	ep,
		ip6_address_t *	server
	)

Definition at line 335 of file dns.c.

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vnet_send_dns4_reply()

void vnet_send_dns4_reply	(	dns_main_t *	dm,
		dns_pending_request_t *	pr,
		dns_cache_entry_t *	ep,
		vlib_buffer_t *	b0
	)

Definition at line 2737 of file dns.c.

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vnet_send_dns6_reply()

void vnet_send_dns6_reply	(	dns_main_t *	dm,
		dns_pending_request_t *	pr,
		dns_cache_entry_t *	ep,
		vlib_buffer_t *	b0
	)

Definition at line 2729 of file dns.c.

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vnet_send_dns_request()

void vnet_send_dns_request	(	dns_main_t *	dm,
		dns_cache_entry_t *	ep
	)

Definition at line 533 of file dns.c.

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Variable Documentation

dns_cache_add_del_command

vlib_cli_command_t dns_cache_add_del_command

Initial value:

=
{
  .path = "dns cache",
  .short_help = "dns cache [add|del|clear] <name> [ip4][ip6]",
  .function = dns_cache_add_del_command_fn,
}

(constructor) VLIB_CLI_COMMAND (dns_cache_add_del_command)

Definition at line 2381 of file dns.c.

dns_main

dns_main_t dns_main

Definition at line 42 of file dns.c.

dns_reply_data_initializer

u8 dns_reply_data_initializer[]

static

Initial value:

= {
  0x00, 0x00, 0x81, 0x80, 0x00, 0x01, 0x00, 0x01,
  0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77, 0x77, 0x0b,
  0x77, 0x65, 0x61, 0x74, 0x68, 0x65, 0x72, 0x6c, 0x69,
  0x6e, 0x6b, 0x03, 0x63, 0x6f, 0x6d, 0x00, 0x00, 0xff,
  0x00, 0x01, 0xc0, 0x0c, 0x00, 0x05, 0x00, 0x01, 0x00,
  0x00, 0x0c, 0x9e, 0x00, 0x1f, 0x0e, 0x64, 0x33, 0x6b,
  0x72, 0x30, 0x67, 0x75, 0x62, 0x61, 0x31, 0x64, 0x76,
  0x77, 0x66, 0x0a, 0x63, 0x6c, 0x6f, 0x75, 0x64, 0x66,
  0x72, 0x6f, 0x6e, 0x74, 0x03, 0x6e, 0x65, 0x74, 0x00,
}

Definition at line 2561 of file dns.c.

show_dns_cache_command

vlib_cli_command_t show_dns_cache_command

Initial value:

=
{
  .path = "show dns cache",
  .short_help = "show dns cache [verbose [nn]]",
  .function = show_dns_cache_command_fn,
}

(constructor) VLIB_CLI_COMMAND (show_dns_cache_command)

Definition at line 2280 of file dns.c.

test_dns_expire_command

vlib_cli_command_t test_dns_expire_command

Initial value:

=
{
  .path = "test dns expire",
  .short_help = "test dns expire <name>",
  .function = test_dns_expire_command_fn,
}

(constructor) VLIB_CLI_COMMAND (test_dns_expire_command)

Definition at line 2719 of file dns.c.

test_dns_fmt_command

vlib_cli_command_t test_dns_fmt_command

Initial value:

=
{
  .path = "test dns format",
  .short_help = "test dns format",
  .function = test_dns_fmt_command_fn,
}

(constructor) VLIB_CLI_COMMAND (test_dns_fmt_command)

Definition at line 2633 of file dns.c.

test_dns_unfmt_command

vlib_cli_command_t test_dns_unfmt_command

Initial value:

=
{
  .path = "test dns unformat",
  .short_help = "test dns unformat <name> [ip4][ip6]",
  .function = test_dns_unfmt_command_fn,
}

(constructor) VLIB_CLI_COMMAND (test_dns_unfmt_command)

Definition at line 2673 of file dns.c.