Routing Netlink

Modules
	Addresses
	Links (Interfaces)
	Neighbours
	The neighbour table establishes bindings between protocol addresses and link layer addresses for hosts sharing the same physical link.
	Neighbour Tables
	Routing
	Routing Rules
	Traffic Control

Routing Type Translations
char *	nl_rtntype2str (int type, char *buf, size_t size)
int	nl_str2rtntype (const char *name)

Scope Translations
char *	rtnl_scope2str (int scope, char *buf, size_t size)
int	rtnl_str2scope (const char *name)

Sending
int	nl_rtgen_request (struct nl_handle *handle, int type, int family, int flags)
	Send routing netlink request message.

Realms Translations
char *	rtnl_realms2str (uint32_t realms, char *buf, size_t len)

Realms
#define	RTNL_REALM_MASK   (0xFFFF)
	Mask specying the size of each realm part.
#define	RTNL_REALM_FROM(realm)   ((realm) >> 16)
	Extract FROM realm from a realms field.
#define	RTNL_REALM_TO(realm)   ((realm) & RTNL_REALM_MASK)
	Extract TO realm from a realms field.
#define	RTNL_MAKE_REALM(from, to)    ((RTNL_REALM_TO(from) << 16) & RTNL_REALM_TO(to))
	Build a realms field.
typedef uint32_t	realm_t

Detailed Description

Macro Definition Documentation

RTNL_REALM_MASK

#define RTNL_REALM_MASK   (0xFFFF)

Definition at line 32 of file rtnl.h.

RTNL_REALM_FROM

#define RTNL_REALM_FROM

(

realm

)

((realm) >> 16)

Definition at line 37 of file rtnl.h.

RTNL_REALM_TO

#define RTNL_REALM_TO

(

realm

)

((realm) & RTNL_REALM_MASK)

Definition at line 42 of file rtnl.h.

RTNL_MAKE_REALM

#define RTNL_MAKE_REALM	(		from,
			to
	)		((RTNL_REALM_TO(from) << 16) & RTNL_REALM_TO(to))

Definition at line 47 of file rtnl.h.

Typedef Documentation

realm_t

typedef uint32_t realm_t

Definition at line 26 of file rtnl.h.

Function Documentation

nl_rtgen_request()

int nl_rtgen_request	(	struct nl_handle *	handle,
		int	type,
		int	family,
		int	flags
	)

Parameters

handle	Netlink handle.
type	Netlink message type.
family	Address family.
flags	Additional netlink message flags.

Fills out a routing netlink request message and sends it out using nl_send_simple().

Returns

0 on success or a negative error code.

Definition at line 40 of file rtnl.c.

{
        struct rtgenmsg gmsg = {
                .rtgen_family = family,
        };
 
        return nl_send_simple(handle, type, flags, &gmsg, sizeof(gmsg));
}

References nl_send_simple().

nl_rtntype2str()

char * nl_rtntype2str	(	int	type,
		char *	buf,
		size_t	size
	)

Definition at line 71 of file rtnl.c.

{
        return __type2str(type, buf, size, rtntypes, ARRAY_SIZE(rtntypes));
}

nl_str2rtntype()

int nl_str2rtntype

(

const char *

name

)

Definition at line 76 of file rtnl.c.

{
        return __str2type(name, rtntypes, ARRAY_SIZE(rtntypes));
}

rtnl_scope2str()

char * rtnl_scope2str	(	int	scope,
		char *	buf,
		size_t	size
	)

Definition at line 96 of file rtnl.c.

{
        return __type2str(scope, buf, size, scopes, ARRAY_SIZE(scopes));
}

rtnl_str2scope()

int rtnl_str2scope

(

const char *

name

)

Definition at line 101 of file rtnl.c.

{
        return __str2type(name, scopes, ARRAY_SIZE(scopes));
}

rtnl_realms2str()

char * rtnl_realms2str	(	uint32_t	realms,
		char *	buf,
		size_t	len
	)

Definition at line 113 of file rtnl.c.

{
        int from = RTNL_REALM_FROM(realms);
        int to = RTNL_REALM_TO(realms);
 
        snprintf(buf, len, "%d/%d", from, to);
 
        return buf;
}