Extended Match

Collaboration diagram for Extended Match:

Modules
	Simple packet data comparison

Module Registration
int	rtnl_ematch_register (struct rtnl_ematch_ops *ops)
	Register ematch module. More...
int	rtnl_ematch_unregister (struct rtnl_ematch_ops *ops)
	Unregister ematch module. More...
struct rtnl_ematch_ops *	rtnl_ematch_lookup_ops (int kind)
	Lookup ematch module by kind. More...
struct rtnl_ematch_ops *	rtnl_ematch_lookup_ops_name (const char *name)
	Lookup ematch module by name. More...

Match
struct rtnl_ematch *	rtnl_ematch_alloc (struct rtnl_ematch_ops *ops)
void	rtnl_ematch_add_child (struct rtnl_ematch *parent, struct rtnl_ematch *child)
	Add ematch to the end of the parent's list of children. More...
void	rtnl_ematch_unlink (struct rtnl_ematch *ematch)
	Remove ematch from the list it is linked to. More...
void	rtnl_ematch_free (struct rtnl_ematch *ematch)
void	rtnl_ematch_set_flags (struct rtnl_ematch *ematch, uint16_t flags)
void	rtnl_ematch_unset_flags (struct rtnl_ematch *ematch, uint16_t flags)
uint16_t	rtnl_ematch_get_flags (struct rtnl_ematch *ematch)
void *	rtnl_ematch_data (struct rtnl_ematch *ematch)

Tree
struct rtnl_ematch_tree *	rtnl_ematch_tree_alloc (uint16_t progid)
void	rtnl_ematch_tree_free (struct rtnl_ematch_tree *tree)
void	rtnl_ematch_tree_add_tail (struct rtnl_ematch_tree *tree, struct rtnl_ematch *ematch)
int	rtnl_ematch_parse (struct nlattr *attr, struct rtnl_ematch_tree **result)
	Parse ematch netlink attributes. More...
void	rtnl_ematch_tree_dump (struct rtnl_ematch_tree *tree, struct nl_dump_params *p)

Detailed Description

Function Documentation

void rtnl_ematch_add_child	(	struct rtnl_ematch *	parent,
		struct rtnl_ematch *	child
	)

Add ematch to the end of the parent's list of children.

• parent Parent ematch.
• child Ematch to be added as new child of parent.

References rtnl_ematch::e_childs, and rtnl_ematch::e_list.

struct rtnl_ematch* rtnl_ematch_alloc

(

struct rtnl_ematch_ops *

ops

)

References rtnl_ematch::e_childs, rtnl_ematch::e_kind, rtnl_ematch::e_list, rtnl_ematch::e_ops, rtnl_ematch_ops::eo_datalen, rtnl_ematch_ops::eo_kind, len, and NULL.

Referenced by rtnl_ematch_parse().

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void* rtnl_ematch_data

(

struct rtnl_ematch *

ematch

)

References rtnl_ematch::e_data.

Referenced by rtnl_ematch_cmp_get(), and rtnl_ematch_cmp_set().

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void rtnl_ematch_free

(

struct rtnl_ematch *

ematch

)

uint16_t rtnl_ematch_get_flags

(

struct rtnl_ematch *

ematch

)

References rtnl_ematch::e_flags.

struct rtnl_ematch_ops* rtnl_ematch_lookup_ops

(

int

kind

)

Lookup ematch module by kind.

• kind Module kind.

Returns

Module operations or NULL if not found.

References rtnl_ematch_ops::eo_kind, rtnl_ematch_ops::eo_list, nl_list_for_each_entry, and NULL.

Referenced by rtnl_ematch_parse(), and rtnl_ematch_register().

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struct rtnl_ematch_ops* rtnl_ematch_lookup_ops_name

(

const char *

name

)

Lookup ematch module by name.

• name Name of ematch module.

Returns

Module operations or NULL if not fuond.

References rtnl_ematch_ops::eo_list, rtnl_ematch_ops::eo_name, nl_list_for_each_entry, and NULL.

int rtnl_ematch_parse	(	struct nlattr *	attr,
		struct rtnl_ematch_tree **	result
	)

Parse ematch netlink attributes.

Returns

0 on success or a negative error code.

References data, rtnl_ematch::e_flags, rtnl_ematch::e_id, rtnl_ematch::e_kind, rtnl_ematch_ops::eo_datalen, rtnl_ematch_ops::eo_parse, rtnl_ematch_tree::et_list, tcf_ematch_hdr::flags, tcf_ematch_hdr::kind, len, tcf_ematch_hdr::matchid, NLA_ALIGN, nla_data(), nla_for_each_nested, nla_len(), nla_parse_nested(), nla_total_size(), NLE_INVAL, NLE_MISSING_ATTR, NLE_NOMEM, NLE_RANGE, tcf_ematch_tree_hdr::nmatches, tcf_ematch_tree_hdr::progid, rtnl_ematch_alloc(), rtnl_ematch_lookup_ops(), rtnl_ematch_tree_alloc(), rtnl_ematch_tree_free(), tb, TCA_EMATCH_TREE_HDR, TCA_EMATCH_TREE_LIST, TCA_EMATCH_TREE_MAX, and TCF_EM_CONTAINER.

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int rtnl_ematch_register

(

struct rtnl_ematch_ops *

ops

)

Register ematch module.

• ops Module operations.

Returns

0 on success or a negative error code.

References rtnl_ematch_ops::eo_kind, rtnl_ematch_ops::eo_list, NLE_EXIST, and rtnl_ematch_lookup_ops().

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void rtnl_ematch_set_flags	(	struct rtnl_ematch *	ematch,
		uint16_t	flags
	)

References rtnl_ematch::e_flags, and flags.

void rtnl_ematch_tree_add_tail	(	struct rtnl_ematch_tree *	tree,
		struct rtnl_ematch *	ematch
	)

References rtnl_ematch::e_list, and rtnl_ematch_tree::et_list.

struct rtnl_ematch_tree* rtnl_ematch_tree_alloc

(

uint16_t

progid

)

References rtnl_ematch_tree::et_list, rtnl_ematch_tree::et_progid, and NULL.

Referenced by rtnl_ematch_parse().

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void rtnl_ematch_tree_dump	(	struct rtnl_ematch_tree *	tree,
		struct nl_dump_params *	p
	)

References rtnl_ematch_tree::et_list, and nl_dump().

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void rtnl_ematch_tree_free

(

struct rtnl_ematch_tree *

tree

)

References rtnl_ematch_tree::et_list.

Referenced by rtnl_basic_set_ematch(), rtnl_cgroup_set_ematch(), and rtnl_ematch_parse().

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void rtnl_ematch_unlink

(

struct rtnl_ematch *

ematch

)

Remove ematch from the list it is linked to.

• ematch Ematch to be unlinked.

References rtnl_ematch::e_list.

int rtnl_ematch_unregister

(

struct rtnl_ematch_ops *

ops

)

Unregister ematch module.

• ops Module operations.

Returns

0 on success or a negative error code.

References rtnl_ematch_ops::eo_kind, rtnl_ematch_ops::eo_list, nl_list_for_each_entry, and NLE_OBJ_NOTFOUND.

void rtnl_ematch_unset_flags	(	struct rtnl_ematch *	ematch,
		uint16_t	flags
	)

References rtnl_ematch::e_flags.