attr.h File Reference

#include <netlink/netlink.h>
#include <netlink/object.h>
#include <netlink/addr.h>
#include <netlink/data.h>

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Data Structures
struct	nla_policy
	Attribute validation policy. More...

Macros
Attribute Construction (Exception Based)
#define	NLA_PUT(msg, attrtype, attrlen, data)
	Add unspecific attribute to netlink message. More...
#define	NLA_PUT_TYPE(msg, type, attrtype, value)
	Add atomic type attribute to netlink message. More...
#define	NLA_PUT_U8(msg, attrtype, value)   NLA_PUT_TYPE(msg, uint8_t, attrtype, value)
	Add 8 bit integer attribute to netlink message. More...
#define	NLA_PUT_U16(msg, attrtype, value)   NLA_PUT_TYPE(msg, uint16_t, attrtype, value)
	Add 16 bit integer attribute to netlink message. More...
#define	NLA_PUT_U32(msg, attrtype, value)   NLA_PUT_TYPE(msg, uint32_t, attrtype, value)
	Add 32 bit integer attribute to netlink message. More...
#define	NLA_PUT_U64(msg, attrtype, value)   NLA_PUT_TYPE(msg, uint64_t, attrtype, value)
	Add 64 bit integer attribute to netlink message. More...
#define	NLA_PUT_STRING(msg, attrtype, value)   NLA_PUT(msg, attrtype, strlen(value) + 1, value)
	Add string attribute to netlink message. More...
#define	NLA_PUT_FLAG(msg, attrtype)   NLA_PUT(msg, attrtype, 0, NULL)
	Add flag attribute to netlink message. More...
#define	NLA_PUT_MSECS(msg, attrtype, msecs)   NLA_PUT_U64(msg, attrtype, msecs)
	Add msecs attribute to netlink message. More...
#define	NLA_PUT_ADDR(msg, attrtype, addr)
	Add address attribute to netlink message. More...
#define	NLA_PUT_DATA(msg, attrtype, data)
	Add abstract data attribute to netlink message. More...
Iterators
#define	nla_for_each_attr(pos, head, len, rem)
	Iterate over a stream of attributes. More...
#define	nla_for_each_nested(pos, nla, rem)
	Iterate over a stream of nested attributes. More...

Functions
int	nla_attr_size (int payload)
	Return size of attribute whithout padding. More...
int	nla_total_size (int payload)
	Return size of attribute including padding. More...
int	nla_padlen (int payload)
	Return length of padding at the tail of the attribute. More...
int	nla_type (const struct nlattr *)
	Return type of the attribute. More...
void *	nla_data (const struct nlattr *)
	Return pointer to the payload section. More...
int	nla_len (const struct nlattr *)
	Return length of the payload . More...
int	nla_ok (const struct nlattr *, int)
	Check if the attribute header and payload can be accessed safely. More...
struct nlattr *	nla_next (const struct nlattr *, int *)
	Return next attribute in a stream of attributes. More...
int	nla_parse (struct nlattr **, int, struct nlattr *, int, struct nla_policy *)
int	nla_validate (struct nlattr *, int, int, struct nla_policy *)
	Validate a stream of attributes. More...
struct nlattr *	nla_find (struct nlattr *, int, int)
	Find a single attribute in a stream of attributes. More...
int	nla_memcpy (void *, struct nlattr *, int)
	Copy attribute payload to another memory area. More...
size_t	nla_strlcpy (char *, const struct nlattr *, size_t)
	Copy string attribute payload to a buffer. More...
int	nla_memcmp (const struct nlattr *, const void *, size_t)
	Compare attribute payload with memory area. More...
int	nla_strcmp (const struct nlattr *, const char *)
	Compare string attribute payload with string. More...
struct nlattr *	nla_reserve (struct nl_msg *, int, int)
	Reserve space for a attribute. More...
int	nla_put (struct nl_msg *, int, int, const void *)
	Add a unspecific attribute to netlink message. More...
int	nla_put_data (struct nl_msg *, int, struct nl_data *)
	Add abstract data as unspecific attribute to netlink message. More...
int	nla_put_addr (struct nl_msg *, int, struct nl_addr *)
	Add abstract address as unspecific attribute to netlink message. More...
uint8_t	nla_get_u8 (struct nlattr *)
	Return value of 8 bit integer attribute. More...
int	nla_put_u8 (struct nl_msg *, int, uint8_t)
	Add 8 bit integer attribute to netlink message. More...
uint16_t	nla_get_u16 (struct nlattr *)
	Return payload of 16 bit integer attribute. More...
int	nla_put_u16 (struct nl_msg *, int, uint16_t)
	Add 16 bit integer attribute to netlink message. More...
uint32_t	nla_get_u32 (struct nlattr *)
	Return payload of 32 bit integer attribute. More...
int	nla_put_u32 (struct nl_msg *, int, uint32_t)
	Add 32 bit integer attribute to netlink message. More...
uint64_t	nla_get_u64 (struct nlattr *)
	Return payload of u64 attribute. More...
int	nla_put_u64 (struct nl_msg *, int, uint64_t)
	Add 64 bit integer attribute to netlink message. More...
char *	nla_get_string (struct nlattr *)
	Return payload of string attribute. More...
char *	nla_strdup (struct nlattr *)
int	nla_put_string (struct nl_msg *, int, const char *)
	Add string attribute to netlink message. More...
int	nla_get_flag (struct nlattr *)
	Return true if flag attribute is set. More...
int	nla_put_flag (struct nl_msg *, int)
	Add flag netlink attribute to netlink message. More...
unsigned long	nla_get_msecs (struct nlattr *)
	Return payload of msecs attribute. More...
int	nla_put_msecs (struct nl_msg *, int, unsigned long)
	Add a msecs netlink attribute to a netlink message. More...
int	nla_put_nested (struct nl_msg *, int, struct nl_msg *)
	Add nested attributes to netlink message. More...
struct nlattr *	nla_nest_start (struct nl_msg *, int)
	Start a new level of nested attributes. More...
int	nla_nest_end (struct nl_msg *, struct nlattr *)
	Finalize nesting of attributes. More...
int	nla_parse_nested (struct nlattr **, int, struct nlattr *, struct nla_policy *)

Basic Attribute Data Types
#define	NLA_TYPE_MAX   (__NLA_TYPE_MAX - 1)
enum	{   NLA_UNSPEC,   NLA_U8,   NLA_U16,   NLA_U32,   NLA_U64,   NLA_STRING,   NLA_FLAG,   NLA_MSECS,   NLA_NESTED,   __NLA_TYPE_MAX }
	Basic attribute data types. More...

Macro Definition Documentation

#define NLA_TYPE_MAX   (__NLA_TYPE_MAX - 1)

Function Documentation

int nla_parse	(	struct nlattr **	,
		int	,
		struct nlattr *	,
		int	,
		struct nla_policy *
	)

Referenced by genlmsg_parse(), and nlmsg_parse().

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int nla_parse_nested	(	struct nlattr **	,
		int	,
		struct nlattr *	,
		struct nla_policy *
	)

Referenced by ip_set_get_ipaddr4(), ip_set_get_ipaddr6(), nfnl_nft_data_parse(), nfnl_nft_expr_parse(), nfnlmsg_nft_chain_parse(), rtnl_ematch_parse(), and rtnl_route_parse().

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