mib_structs.c File Reference

Data Structures
struct	nse
Functions
void	snmp_ifindextonetif (s32_t ifindex, struct netif **netif)
void	snmp_netiftoifindex (struct netif *netif, s32_t *ifidx)
void	snmp_oidtoip (s32_t *ident, struct ip_addr *ip)
void	snmp_iptooid (struct ip_addr *ip, s32_t *ident)
s8_t	snmp_mib_node_insert (struct mib_list_rootnode *rn, s32_t objid, struct mib_list_node **insn)
s8_t	snmp_mib_node_find (struct mib_list_rootnode *rn, s32_t objid, struct mib_list_node **fn)
struct mib_list_rootnode *	snmp_mib_node_delete (struct mib_list_rootnode *rn, struct mib_list_node *n)
struct mib_node *	snmp_search_tree (struct mib_node *node, u8_t ident_len, s32_t *ident, struct snmp_name_ptr *np)
struct mib_node *	snmp_expand_tree (struct mib_node *node, u8_t ident_len, s32_t *ident, struct snmp_obj_id *oidret)
u8_t	snmp_iso_prefix_tst (u8_t ident_len, s32_t *ident)
u8_t	snmp_iso_prefix_expand (u8_t ident_len, s32_t *ident, struct snmp_obj_id *oidret)
Variables
const s32_t	prefix [4] = {1, 3, 6, 1}

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Detailed Description

MIB tree access/construction functions.

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Function Documentation

struct mib_node* snmp_expand_tree	(	struct mib_node *	node,
		u8_t	ident_len,
		s32_t *	ident,
		struct snmp_obj_id *	oidret
	)			[read]

Tree expansion.

void snmp_ifindextonetif	(	s32_t	ifindex,
		struct netif **	netif
	)

Conversion from ifIndex to lwIP netif

Parameters:

	ifindex	is a s32_t object sub-identifier
	netif	points to returned netif struct pointer

void snmp_iptooid	(	struct ip_addr *	ip,
		s32_t *	ident
	)

Conversion from lwIP ip_addr to oid

Parameters:

	ip	points to input struct
	ident	points to s32_t ident[4] output

u8_t snmp_iso_prefix_expand	(	u8_t	ident_len,
		s32_t *	ident,
		struct snmp_obj_id *	oidret
	)

Expands object identifier to the iso.org.dod.internet prefix for use in getnext operation.

Parameters:

	ident_len	the length of the supplied object identifier
	ident	points to the array of sub identifiers
	oidret	points to returned expanded object identifier

Returns:

1 if it matches, 0 otherwise

Note:

ident_len 0 is allowed, expanding to the first known object id!!

u8_t snmp_iso_prefix_tst	(	u8_t	ident_len,
		s32_t *	ident
	)

Test object identifier for the iso.org.dod.internet prefix.

Parameters:

	ident_len	the length of the supplied object identifier
	ident	points to the array of sub identifiers

Returns:

1 if it matches, 0 otherwise

struct mib_list_rootnode* snmp_mib_node_delete	(	struct mib_list_rootnode *	rn,
		struct mib_list_node *	n
	)			[read]

Removes node from idx list if it has a single child left.

Parameters:

	rn	points to the root node
	n	points to the node to delete

Returns:

the nptr to be freed by caller

s8_t snmp_mib_node_find	(	struct mib_list_rootnode *	rn,
		s32_t	objid,
		struct mib_list_node **	fn
	)

Finds node in idx list and returns deletion mark.

Parameters:

	rn	points to the root node
	objid	is the object sub identifier
	fn	returns pointer to found node

Returns:

0 if not found, 1 if deletable, 2 can't delete (2 or more children), 3 not a list_node

s8_t snmp_mib_node_insert	(	struct mib_list_rootnode *	rn,
		s32_t	objid,
		struct mib_list_node **	insn
	)

Inserts node in idx list in a sorted (ascending order) fashion and allocates the node if needed.

Parameters:

	rn	points to the root node
	objid	is the object sub identifier
	insn	points to a pointer to the inserted node used for constructing the tree.

Returns:

-1 if failed, 1 if inserted, 2 if present.

void snmp_netiftoifindex	(	struct netif *	netif,
		s32_t *	ifidx
	)

Conversion from lwIP netif to ifIndex

Parameters:

	netif	points to a netif struct
	ifidx	points to s32_t object sub-identifier

void snmp_oidtoip	(	s32_t *	ident,
		struct ip_addr *	ip
	)

Conversion from oid to lwIP ip_addr

Parameters:

	ident	points to s32_t ident[4] input
	ip	points to output struct

struct mib_node* snmp_search_tree	(	struct mib_node *	node,
		u8_t	ident_len,
		s32_t *	ident,
		struct snmp_name_ptr *	np
	)			[read]

Searches tree for the supplied (scalar?) object identifier.

Parameters:

	node	points to the root of the tree ('.internet')
	ident_len	the length of the supplied object identifier
	ident	points to the array of sub identifiers
	np	points to the found object instance (rerurn)

Returns:

pointer to the requested parent (!) node if success, NULL otherwise

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Variable Documentation

const s32_t prefix[4] = {1, 3, 6, 1}

.iso.org.dod.internet address prefix,

See also:

snmp_iso_*()

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