/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */


#ifndef _UAPI_LINUX_DNS_RESOLVER_H
#define _UAPI_LINUX_DNS_RESOLVER_H

#include <linux/types.h>


enum dns_payload_content_type {
	DNS_PAYLOAD_IS_SERVER_LIST	= 0, 
};


enum dns_payload_address_type {
	DNS_ADDRESS_IS_IPV4		= 0, 
	DNS_ADDRESS_IS_IPV6		= 1, 
};


enum dns_payload_protocol_type {
	DNS_SERVER_PROTOCOL_UNSPECIFIED	= 0,
	DNS_SERVER_PROTOCOL_UDP		= 1, 
	DNS_SERVER_PROTOCOL_TCP		= 2, 
};


enum dns_record_source {
	DNS_RECORD_UNAVAILABLE		= 0, 
	DNS_RECORD_FROM_CONFIG		= 1, 
	DNS_RECORD_FROM_DNS_A		= 2, 
	DNS_RECORD_FROM_DNS_AFSDB	= 3, 
	DNS_RECORD_FROM_DNS_SRV		= 4, 
	DNS_RECORD_FROM_NSS		= 5, 
	NR__dns_record_source
};


enum dns_lookup_status {
	DNS_LOOKUP_NOT_DONE		= 0, 
	DNS_LOOKUP_GOOD			= 1, 
	DNS_LOOKUP_GOOD_WITH_BAD	= 2, 
	DNS_LOOKUP_BAD			= 3, 
	DNS_LOOKUP_GOT_NOT_FOUND	= 4, 
	DNS_LOOKUP_GOT_LOCAL_FAILURE	= 5, 
	DNS_LOOKUP_GOT_TEMP_FAILURE	= 6, 
	DNS_LOOKUP_GOT_NS_FAILURE	= 7, 
	NR__dns_lookup_status
};


struct dns_payload_header {
	__u8		zero;		
	__u8		content;	
	__u8		version;	
} __packed;


struct dns_server_list_v1_header {
	struct dns_payload_header hdr;
	__u8		source;		
	__u8		status;		
	__u8		nr_servers;	
} __packed;


struct dns_server_list_v1_server {
	__u16		name_len;	
	__u16		priority;	
	__u16		weight;		
	__u16		port;		
	__u8		source;		
	__u8		status;		
	__u8		protocol;	
	__u8		nr_addrs;
} __packed;


struct dns_server_list_v1_address {
	__u8		address_type;	
} __packed;

#endif 
