datatype.h File Reference

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Data Structures
struct	datatype
struct	symbolic_constant
	struct symbolic_constant - symbol <-> constant mapping More...
struct	symbol_table
	struct symbol_table - type construction from symbolic values More...

Macros
#define	TYPE_MAX   (__TYPE_MAX - 1)
#define	TYPE_BITS   6
#define	TYPE_MASK   ((1 << TYPE_BITS) - 1)

Enumerations
enum	datatypes {   TYPE_INVALID,   TYPE_VERDICT,   TYPE_NFPROTO,   TYPE_BITMASK,   TYPE_INTEGER,   TYPE_STRING,   TYPE_LLADDR,   TYPE_IPADDR,   TYPE_IP6ADDR,   TYPE_ETHERADDR,   TYPE_ETHERTYPE,   TYPE_ARPOP,   TYPE_INET_PROTOCOL,   TYPE_INET_SERVICE,   TYPE_ICMP_TYPE,   TYPE_TCP_FLAG,   TYPE_DCCP_PKTTYPE,   TYPE_MH_TYPE,   TYPE_TIME,   TYPE_MARK,   TYPE_IFINDEX,   TYPE_ARPHRD,   TYPE_REALM,   TYPE_TC_HANDLE,   TYPE_UID,   TYPE_GID,   TYPE_CT_STATE,   TYPE_CT_DIR,   TYPE_CT_STATUS,   TYPE_ICMP6_TYPE,   TYPE_CT_LABEL,   TYPE_PKTTYPE,   TYPE_ICMP_CODE,   TYPE_ICMPV6_CODE,   TYPE_ICMPX_CODE,   TYPE_DEVGROUP,   __TYPE_MAX }
	enum datatypes More...
enum	byteorder {   BYTEORDER_INVALID,   BYTEORDER_HOST_ENDIAN,   BYTEORDER_BIG_ENDIAN }
	enum byteorder More...
enum	datatype_flags {   DTYPE_F_ALLOC = (1 << 0),   DTYPE_F_PREFIX = (1 << 1) }
	enum datatype_flags More...

: type name
struct datatype : numeric identifier : byteorder of type (non-basetypes only) : flags : type size (fixed sized non-basetypes only) : number of subtypes (concat type) : type description : basetype for subtypes, determines type compatibilty : format string for basetype : function to print a constant of this type : function to parse a symbol and return an expression : symbol table for this type
#define	SYMBOL(id, v)   { .identifier = (id), .value = (v) }
#define	SYMBOL_LIST_END   (struct symbolic_constant) { }
const struct datatype	invalid_type
const struct datatype	verdict_type
const struct datatype	nfproto_type
const struct datatype	bitmask_type
const struct datatype	integer_type
const struct datatype	string_type
const struct datatype	lladdr_type
const struct datatype	ipaddr_type
const struct datatype	ip6addr_type
const struct datatype	etheraddr_type
const struct datatype	ethertype_type
const struct datatype	arphrd_type
const struct datatype	inet_protocol_type
const struct datatype	inet_service_type
const struct datatype	mark_type
const struct datatype	icmp_code_type
const struct datatype	icmpv6_code_type
const struct datatype	icmpx_code_type
const struct datatype	time_type
void	datatype_register (const struct datatype *dtype)
const struct datatype *	datatype_lookup (enum datatypes type)
const struct datatype *	datatype_lookup_byname (const char *name)
struct error_record *	symbol_parse (const struct expr *sym, struct expr **res)
void	datatype_print (const struct expr *expr)
struct error_record *	symbolic_constant_parse (const struct expr *sym, const struct symbol_table *tbl, struct expr **res)
void	symbolic_constant_print (const struct symbol_table *tbl, const struct expr *expr)
void	symbol_table_print (const struct symbol_table *tbl, const struct datatype *dtype)
struct symbol_table *	rt_symbol_table_init (const char *filename)
void	rt_symbol_table_free (struct symbol_table *tbl)
const struct datatype *	concat_type_alloc (uint32_t type)
void	concat_type_destroy (const struct datatype *dtype)

Macro Definition Documentation

#define SYMBOL	(		id,
			v
	)		{ .identifier = (id), .value = (v) }

#define SYMBOL_LIST_END   (struct symbolic_constant) { }

Referenced by rt_symbol_table_init().

#define TYPE_BITS   6

Referenced by concat_type_alloc().

#define TYPE_MASK   ((1 << TYPE_BITS) - 1)

Referenced by datatype_register().

#define TYPE_MAX   (__TYPE_MAX - 1)

Referenced by datatype_lookup(), datatype_lookup_byname(), and datatype_register().

Enumeration Type Documentation

enum byteorder

enum byteorder

: uninitialized/unknown : host endian : big endian

Enumerator
BYTEORDER_INVALID
BYTEORDER_HOST_ENDIAN
BYTEORDER_BIG_ENDIAN

enum datatype_flags

enum datatype_flags

: datatype is dynamically allocated : preferred representation for ranges is a prefix

Enumerator
DTYPE_F_ALLOC
DTYPE_F_PREFIX

enum datatypes

enum datatypes

: uninitialized : nftables verdict : netfilter protocol (integer subtype) : bitmask : integer : string : link layer address (integer subtype) : IPv4 address (integer subtype) : IPv6 address (integer subtype) : Ethernet address (lladdr subtype) : EtherType (integer subtype) : ARP operation (integer subtype) : internet protocol (integer subtype) : internet service (integer subtype) : ICMP type codes (integer subtype) : TCP flag (bitmask subtype) : DCCP packet type (integer subtype) : Mobility Header type (integer subtype) : relative time : packet mark (integer subtype) : interface index (integer subtype) : interface type (integer subtype) : routing realm (integer subtype) : TC handle (integer subtype) : user ID (integer subtype) : group ID (integer subtype) : conntrack state (bitmask subtype) : conntrack direction : conntrack status (bitmask subtype) : ICMPv6 type codes (integer subtype) : Conntrack Label (bitmask subtype) : packet type (integer subtype) : icmp code (integer subtype) : icmpv6 code (integer subtype) : icmpx code (integer subtype) : devgroup code (integer subtype)

Enumerator
TYPE_INVALID
TYPE_VERDICT
TYPE_NFPROTO
TYPE_BITMASK
TYPE_INTEGER
TYPE_STRING
TYPE_LLADDR
TYPE_IPADDR
TYPE_IP6ADDR
TYPE_ETHERADDR
TYPE_ETHERTYPE
TYPE_ARPOP
TYPE_INET_PROTOCOL
TYPE_INET_SERVICE
TYPE_ICMP_TYPE
TYPE_TCP_FLAG
TYPE_DCCP_PKTTYPE
TYPE_MH_TYPE
TYPE_TIME
TYPE_MARK
TYPE_IFINDEX
TYPE_ARPHRD
TYPE_REALM
TYPE_TC_HANDLE
TYPE_UID
TYPE_GID
TYPE_CT_STATE
TYPE_CT_DIR
TYPE_CT_STATUS
TYPE_ICMP6_TYPE
TYPE_CT_LABEL
TYPE_PKTTYPE
TYPE_ICMP_CODE
TYPE_ICMPV6_CODE
TYPE_ICMPX_CODE
TYPE_DEVGROUP
__TYPE_MAX

Function Documentation

const struct datatype* concat_type_alloc

(

uint32_t

type

)

References datatype::desc, div_round_up, datatype::name, name, NULL, datatype::parse, datatype::size, size, datatype::subtypes, datatype::type, type, TYPE_BITS, and xstrdup().

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void concat_type_destroy

(

const struct datatype *

dtype

)

References datatype::desc, DTYPE_F_ALLOC, datatype::flags, datatype::name, and xfree.

const struct datatype* datatype_lookup

(

enum datatypes

type

)

References NULL, type, and TYPE_MAX.

const struct datatype* datatype_lookup_byname

(

const char *

name

)

References datatype::name, NULL, type, TYPE_INVALID, and TYPE_MAX.

void datatype_print

(

const struct expr *

expr

)

References datatype::basetype, BUG, expr::dtype, datatype::name, NULL, datatype::print, datatype::sym_tbl, and symbolic_constant_print().

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void datatype_register

(

const struct datatype *

dtype

)

References BUILD_BUG_ON, datatype::type, TYPE_MASK, and TYPE_MAX.

void rt_symbol_table_free

(

struct symbol_table *

tbl

)

References symbolic_constant::identifier, NULL, s, symbol_table::symbols, and xfree.

struct symbol_table* rt_symbol_table_init

(

const char *

filename

)

References buf, symbolic_constant::identifier, NULL, RT_SYM_TAB_INITIAL_SIZE, size, SYMBOL_LIST_END, symbol_table::symbols, symbolic_constant::value, xmalloc(), xrealloc(), and xstrdup().

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struct error_record* symbol_parse	(	const struct expr *	sym,
		struct expr **	res
	)

References datatype::basetype, datatype::desc, expr::dtype, error, EXPR_SYMBOL, expr::location, NULL, expr::ops, datatype::parse, datatype::sym_tbl, symbolic_constant_parse(), and expr_ops::type.

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void symbol_table_print	(	const struct symbol_table *	tbl,
		const struct datatype *	dtype
	)

References BITS_PER_BYTE, symbolic_constant::identifier, NULL, s, datatype::size, size, symbol_table::symbols, and symbolic_constant::value.

Referenced by expr_describe().

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struct error_record* symbolic_constant_parse	(	const struct expr *	sym,
		const struct symbol_table *	tbl,
		struct expr **	res
	)

References datatype::basetype, datatype::byteorder, constant_expr_alloc(), datatype::desc, expr::dtype, error, symbolic_constant::identifier, expr::identifier, expr::location, NULL, datatype::parse, s, datatype::size, symbol_table::symbols, and symbolic_constant::value.

Referenced by symbol_parse().

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void symbolic_constant_print	(	const struct symbol_table *	tbl,
		const struct expr *	expr
	)

References BITS_PER_BYTE, expr::byteorder, expr_basetype(), symbolic_constant::identifier, expr::len, mpz_export_data(), NULL, datatype::print, s, symbol_table::symbols, symbolic_constant::value, and expr::value.

Referenced by datatype_print().

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Variable Documentation

const struct datatype arphrd_type

Referenced by payload_gen_dependency().

const struct datatype bitmask_type

const struct datatype etheraddr_type

const struct datatype ethertype_type

const struct datatype icmp_code_type

const struct datatype icmpv6_code_type

const struct datatype icmpx_code_type

const struct datatype inet_protocol_type

const struct datatype inet_service_type

Referenced by ct_expr_update_type().

const struct datatype integer_type

const struct datatype invalid_type

Referenced by constant_expr_join(), constant_expr_splice(), map_expr_alloc(), netlink_alloc_value(), prefix_expr_alloc(), range_expr_alloc(), symbol_expr_alloc(), and unary_expr_alloc().

const struct datatype ip6addr_type

Referenced by ct_expr_update_type().

const struct datatype ipaddr_type

const struct datatype lladdr_type

const struct datatype mark_type

const struct datatype nfproto_type

const struct datatype string_type

const struct datatype time_type

const struct datatype verdict_type

Referenced by relational_expr_alloc(), and verdict_expr_alloc().