Inet Diag library (libnl-idiag)

Modules
	Inet Diag Memory Info
	Inet Diag Messages
	Inet Diag Requests
	Inet Diag TCP Vegas Info

Macros
#define	IDIAG_SS_ALL   ((1<<IDIAG_SS_MAX)-1)
	Macro to represent all socket states.
#define	IDIAG_ATTR_ALL   ((1<<IDIAG_ATTR_MAX)-1)
	Macro to represent all socket attributes.

Enumerations
enum	{   IDIAG_SS_UNKNOWN,   IDIAG_SS_ESTABLISHED,   IDIAG_SS_SYN_SENT,   IDIAG_SS_SYN_RECV,   IDIAG_SS_FIN_WAIT1,   IDIAG_SS_FIN_WAIT2,   IDIAG_SS_TIME_WAIT,   IDIAG_SS_CLOSE,   IDIAG_SS_CLOSE_WAIT,   IDIAG_SS_LAST_ACK,   IDIAG_SS_LISTEN,   IDIAG_SS_CLOSING,   IDIAG_SS_MAX }
	Socket state identifiers.
enum	{   IDIAG_ATTR_NONE,   IDIAG_ATTR_MEMINFO,   IDIAG_ATTR_INFO,   IDIAG_ATTR_VEGASINFO,   IDIAG_ATTR_CONG,   IDIAG_ATTR_TOS,   IDIAG_ATTR_TCLASS,   IDIAG_ATTR_SKMEMINFO,   IDIAG_ATTR_SHUTDOWN,   IDIAG_ATTR_MAX }
	Inet Diag extended attributes.
enum	{   IDIAG_SK_MEMINFO_RMEM_ALLOC,   IDIAG_SK_MEMINFO_RCVBUF,   IDIAG_SK_MEMINFO_WMEM_ALLOC,   IDIAG_SK_MEMINFO_SNDBUF,   IDIAG_SK_MEMINFO_FWD_ALLOC,   IDIAG_SK_MEMINFO_WMEM_QUEUED,   IDIAG_SK_MEMINFO_OPTMEM,   IDIAG_SK_MEMINFO_BACKLOG,   IDIAG_SK_MEMINFO_VARS }
	Socket memory info identifiers.

Socket Creation
int	idiagnl_connect (struct nl_sock *sk)
	Create and connect idiag netlink socket. More...

Sending
int	idiagnl_send_simple (struct nl_sock *sk, int flags, uint8_t family, uint16_t states, uint16_t ext)
	Send trivial idiag netlink message. More...

Inet Diag flag and attribute conversions
char *	idiagnl_state2str (int state, char *buf, size_t len)
	Convert inet diag socket states to strings. More...
int	idiagnl_str2state (const char *name)
	Convert inet diag socket state string to int. More...
char *	idiagnl_timer2str (int timer, char *buf, size_t len)
	Convert inet diag timer types to strings. More...
int	idiagnl_str2timer (const char *name)
	Convert inet diag timer string to int. More...
char *	idiagnl_attrs2str (int attrs, char *buf, size_t len)
	Convert inetdiag extended attributes to strings. More...
char *	idiagnl_tcpstate2str (uint8_t state, char *buf, size_t len)
	Convert inetdiag tcp states to strings. More...
char *	idiagnl_tcpopts2str (uint8_t attrs, char *buf, size_t len)
	Convert TCP option attributes to string. More...
char *	idiagnl_shutdown2str (uint8_t shutdown, char *buf, size_t len)
	Convert shutdown state to string. More...
char *	idiagnl_exts2str (uint8_t attrs, char *buf, size_t len)
	Convert inet diag extension flags to a string. More...

Detailed Description

Function Documentation

int idiagnl_connect

(

struct nl_sock *

sk

)

Create and connect idiag netlink socket.

Parameters

sk	Netlink socket.

Creates a NETLINK_INET_DIAG socket, binds the socket, and issues a connection attemp.

See Also

nl_connect()

Returns

0 on success or a negative error code.

Definition at line 40 of file idiag.c.

References nl_connect().

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int idiagnl_send_simple	(	struct nl_sock *	sk,
		int	flags,
		uint8_t	family,
		uint16_t	states,
		uint16_t	ext
	)

Send trivial idiag netlink message.

Parameters

sk	Netlink socket.
flags	Message flags
family	Address family
states	Socket states to query
ext	Inet Diag attribute extensions to query

Returns

Newly allocated netlink message or NULL.

Definition at line 62 of file idiag.c.

References nl_send_simple().

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char* idiagnl_state2str	(	int	state,
		char *	buf,
		size_t	len
	)

Convert inet diag socket states to strings.

Parameters

state	inetdiag socket state (e.g., IDIAG_SS_ESTABLISHED)
buf	output buffer which will hold string result
len	length in bytes of the output buffer

Returns

string representation of the inetdiag socket state or an empty string.

Definition at line 110 of file idiag.c.

int idiagnl_str2state

(

const char *

name

)

Convert inet diag socket state string to int.

Parameters

name	inetdiag socket state string

Returns

the int representation of the socket state strign or a negative error code.

Definition at line 123 of file idiag.c.

char* idiagnl_timer2str	(	int	timer,
		char *	buf,
		size_t	len
	)

Convert inet diag timer types to strings.

Parameters

timer	inetdiag timer (e.g., IDIAG_TIMER_ON)
buf	output buffer which will hold string result
len	length in bytes of the output buffer

Returns

string representation of the inetdiag timer type or an empty string.

Definition at line 145 of file idiag.c.

int idiagnl_str2timer

(

const char *

name

)

Convert inet diag timer string to int.

Parameters

name	inetdiag timer string

Returns

the int representation of the timer string or a negative error code.

Definition at line 157 of file idiag.c.

char* idiagnl_attrs2str	(	int	attrs,
		char *	buf,
		size_t	len
	)

Convert inetdiag extended attributes to strings.

Parameters

attrs	inetdiag attribute (e.g., IDIAG_ATTR_MEMINFO)
buf	output buffer which will hold string result
len	length in bytes of the output buffer

Returns

string representation of attrs or an empty string.

Definition at line 180 of file idiag.c.

char* idiagnl_tcpstate2str	(	uint8_t	state,
		char *	buf,
		size_t	len
	)

Convert inetdiag tcp states to strings.

Parameters

state	TCP state (e.g., TCP_CA_Open)
buf	output buffer which will hold string result
len	length in bytes of the output buffer

Definition at line 199 of file idiag.c.

char* idiagnl_tcpopts2str	(	uint8_t	attrs,
		char *	buf,
		size_t	len
	)

Convert TCP option attributes to string.

Parameters

attrs	TCP option attributes to convert (e.g., TCPI_OPT_SACK | TCPI_OPT_WSCALE)
buf	Output buffer for string
len	Length in bytes of output buffer

Returns

buffer with string representation or empty string

Definition at line 221 of file idiag.c.

char* idiagnl_shutdown2str	(	uint8_t	shutdown,
		char *	buf,
		size_t	len
	)

Convert shutdown state to string.

Parameters

shutdown	Shutdown state (e.g., idiag_msg->shutdown)
buf	Ouput buffer to hold string representation
len	Length in bytes of output buffer

Returns

string representation of shutdown state or NULL

Definition at line 235 of file idiag.c.

char* idiagnl_exts2str	(	uint8_t	attrs,
		char *	buf,
		size_t	len
	)

Convert inet diag extension flags to a string.

Parameters

attrs	inet diag extension flags (e.g., (IDIAG_ATTR_MEMINFO | IDIAG_ATTR_CONG | IDIAG_ATTR_TOS))
buf	Output buffer to hold string representation
len	length in bytes of the output buffer

Definition at line 268 of file idiag.c.