NAT plugin virtual fragmentation reassembly. More...

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Functions
static u32	nat_reass_get_nbuckets (u8 is_ip6)

static_always_inline void	nat_ip4_reass_get_frags_inline (nat_reass_ip4_t reass, u32 *bi)

static_always_inline void	nat_ip6_reass_get_frags_inline (nat_reass_ip6_t reass, u32 *bi)

int	nat_reass_set (u32 timeout, u16 max_reass, u8 max_frag, u8 drop_frag, u8 is_ip6)
	Set NAT virtual fragmentation reassembly configuration. More...

u32	nat_reass_get_timeout (u8 is_ip6)
	Get reassembly timeout. More...

u16	nat_reass_get_max_reass (u8 is_ip6)
	Get maximum number of concurrent reassemblies. More...

u8	nat_reass_get_max_frag (u8 is_ip6)
	Get maximum number of fragmets per reassembly. More...

u8	nat_reass_is_drop_frag (u8 is_ip6)
	Get status of virtual fragmentation reassembly. More...

static_always_inline nat_reass_ip4_t *	nat_ip4_reass_lookup (nat_reass_ip4_key_t *k, f64 now)

nat_reass_ip4_t *	nat_ip4_reass_find (ip4_address_t src, ip4_address_t dst, u16 frag_id, u8 proto)
	Find reassembly. More...

nat_reass_ip4_t *	nat_ip4_reass_find_or_create (ip4_address_t src, ip4_address_t dst, u16 frag_id, u8 proto, u8 reset_timeout, u32 **bi_to_drop)
	Find or create reassembly. More...

int	nat_ip4_reass_add_fragment (nat_reass_ip4_t reass, u32 bi, u32 *bi_to_drop)
	Cache fragment. More...

void	nat_ip4_reass_get_frags (nat_reass_ip4_t reass, u32 *bi)
	Get cached fragments. More...

void	nat_ip4_reass_walk (nat_ip4_reass_walk_fn_t fn, void *ctx)
	Walk IPv4 reassemblies. More...

static_always_inline nat_reass_ip6_t *	nat_ip6_reass_lookup (nat_reass_ip6_key_t *k, f64 now)

nat_reass_ip6_t *	nat_ip6_reass_find_or_create (ip6_address_t src, ip6_address_t dst, u32 frag_id, u8 proto, u8 reset_timeout, u32 **bi_to_drop)
	Find or create reassembly. More...

int	nat_ip6_reass_add_fragment (nat_reass_ip6_t reass, u32 bi, u32 *bi_to_drop)
	Cache fragment. More...

void	nat_ip6_reass_get_frags (nat_reass_ip6_t reass, u32 *bi)
	Get cached fragments. More...

void	nat_ip6_reass_walk (nat_ip6_reass_walk_fn_t fn, void *ctx)
	Walk IPv6 reassemblies. More...

clib_error_t *	nat_reass_init (vlib_main_t *vm)
	Initialize NAT virtual fragmentation reassembly. More...

static clib_error_t *	nat_reass_command_fn (vlib_main_t vm, unformat_input_t input, vlib_cli_command_t *cmd)

static int	nat_ip4_reass_walk_cli (nat_reass_ip4_t reass, void ctx)

static int	nat_ip6_reass_walk_cli (nat_reass_ip6_t reass, void ctx)

static clib_error_t *	show_nat_reass_command_fn (vlib_main_t vm, unformat_input_t input, vlib_cli_command_t *cmd)

Variables
nat_reass_main_t	nat_reass_main

static vlib_cli_command_t	nat_reass_command
	(constructor) VLIB_CLI_COMMAND (nat_reass_command) More...

static vlib_cli_command_t	show_nat_reass_command
	(constructor) VLIB_CLI_COMMAND (show_nat_reass_command) More...

Detailed Description

NAT plugin virtual fragmentation reassembly.

Definition in file nat_reass.c.

Function Documentation

int nat_ip4_reass_add_fragment	(	nat_reass_ip4_t *	reass,
		u32	bi,
		u32 **	bi_to_drop
	)

Cache fragment.

Parameters

reass	Reassembly data.
bi	Buffer index.
bi_to_drop	Fragments to drop.

Returns: 0 on success, non-zero value otherwise.

Definition at line 338 of file nat_reass.c.

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nat_reass_ip4_t* nat_ip4_reass_find	(	ip4_address_t	src,
		ip4_address_t	dst,
		u16	frag_id,
		u8	proto
	)

Find reassembly.

Parameters

src	Source IPv4 address.
dst	Destination IPv4 address.
frag_id	Fragment ID.
proto	L4 protocol.

Returns: Reassembly data or 0 if not found.

Definition at line 199 of file nat_reass.c.

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nat_reass_ip4_t* nat_ip4_reass_find_or_create	(	ip4_address_t	src,
		ip4_address_t	dst,
		u16	frag_id,
		u8	proto,
		u8	reset_timeout,
		u32 **	bi_to_drop
	)

Find or create reassembly.

Parameters

src	Source IPv4 address.
dst	Destination IPv4 address.
frag_id	Fragment ID.
proto	L4 protocol.
reset_timeout	If non-zero value reset timeout.
bi_to_drop	Fragments to drop.

Returns: Reassembly data or 0 on failure.

Definition at line 220 of file nat_reass.c.

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void nat_ip4_reass_get_frags	(	nat_reass_ip4_t *	reass,
		u32 **	bi
	)

Get cached fragments.

Parameters

reass	Reassembly data.
bi	Vector of buffer indexes.

Definition at line 370 of file nat_reass.c.

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static_always_inline void nat_ip4_reass_get_frags_inline	(	nat_reass_ip4_t *	reass,
		u32 **	bi
	)

Definition at line 47 of file nat_reass.c.

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static_always_inline nat_reass_ip4_t* nat_ip4_reass_lookup	(	nat_reass_ip4_key_t *	k,
		f64	now
	)

Definition at line 179 of file nat_reass.c.

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void nat_ip4_reass_walk	(	nat_ip4_reass_walk_fn_t	fn,
		void *	ctx
	)

Walk IPv4 reassemblies.

Parameters

fn	The function to invoke on each entry visited.
ctx	A context passed in the visit function.

Definition at line 382 of file nat_reass.c.

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static int nat_ip4_reass_walk_cli	(	nat_reass_ip4_t *	reass,
		void *	ctx
	)

static

Definition at line 726 of file nat_reass.c.

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int nat_ip6_reass_add_fragment	(	nat_reass_ip6_t *	reass,
		u32	bi,
		u32 **	bi_to_drop
	)

Cache fragment.

Parameters

reass	Reassembly data.
bi	Buffer index.
bi_to_drop	Fragments to drop.

Returns: 0 on success, non-zero value otherwise.

Definition at line 544 of file nat_reass.c.

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nat_reass_ip6_t* nat_ip6_reass_find_or_create	(	ip6_address_t	src,
		ip6_address_t	dst,
		u32	frag_id,
		u8	proto,
		u8	reset_timeout,
		u32 **	bi_to_drop
	)

Find or create reassembly.

Parameters

src	Source IPv6 address.
dst	Destination IPv6 address.
frag_id	Fragment ID.
proto	L4 protocol.
reset_timeout	If non-zero value reset timeout.
bi_to_drop	Fragments to drop.

Returns: Reassembly data or 0 on failure.

Definition at line 426 of file nat_reass.c.

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void nat_ip6_reass_get_frags	(	nat_reass_ip6_t *	reass,
		u32 **	bi
	)

Get cached fragments.

Parameters

reass	Reassembly data.
bi	Vector of buffer indexes.

Definition at line 576 of file nat_reass.c.

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static_always_inline void nat_ip6_reass_get_frags_inline	(	nat_reass_ip6_t *	reass,
		u32 **	bi
	)

Definition at line 66 of file nat_reass.c.

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static_always_inline nat_reass_ip6_t* nat_ip6_reass_lookup	(	nat_reass_ip6_key_t *	k,
		f64	now
	)

Definition at line 401 of file nat_reass.c.

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void nat_ip6_reass_walk	(	nat_ip6_reass_walk_fn_t	fn,
		void *	ctx
	)

Walk IPv6 reassemblies.

Parameters

fn	The function to invoke on each entry visited.
ctx	A context passed in the visit function.

Definition at line 588 of file nat_reass.c.

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static int nat_ip6_reass_walk_cli	(	nat_reass_ip6_t *	reass,
		void *	ctx
	)

static

Definition at line 779 of file nat_reass.c.

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static clib_error_t* nat_reass_command_fn	(	vlib_main_t *	vm,
		unformat_input_t *	input,
		vlib_cli_command_t *	cmd
	)

static

Definition at line 664 of file nat_reass.c.

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u8 nat_reass_get_max_frag ( u8 is_ip6 )

Get maximum number of fragmets per reassembly.

Parameters

is_ip6 1 if IPv6, 0 if IPv4.

Returns: maximum number of fragmets per reassembly.

Definition at line 157 of file nat_reass.c.

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u16 nat_reass_get_max_reass ( u8 is_ip6 )

Get maximum number of concurrent reassemblies.

Parameters

is_ip6 1 if IPv6, 0 if IPv4.

Returns: maximum number of concurrent reassemblies.

Definition at line 146 of file nat_reass.c.

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static u32 nat_reass_get_nbuckets ( u8 is_ip6 )

static

Definition at line 27 of file nat_reass.c.

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u32 nat_reass_get_timeout ( u8 is_ip6 )

Get reassembly timeout.

Parameters

is_ip6 1 if IPv6, 0 if IPv4.

Returns: reassembly timeout.

Definition at line 135 of file nat_reass.c.

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clib_error_t* nat_reass_init ( vlib_main_t * vm )

Initialize NAT virtual fragmentation reassembly.

Parameters

vm	vlib main.

Returns: error code.

Definition at line 607 of file nat_reass.c.

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u8 nat_reass_is_drop_frag ( u8 is_ip6 )

Get status of virtual fragmentation reassembly.

Parameters

is_ip6 1 if IPv6, 0 if IPv4.

Returns: zero if translate fragments, non-zero value if drop fragments.

Definition at line 168 of file nat_reass.c.

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int nat_reass_set	(	u32	timeout,
		u16	max_reass,
		u8	max_frag,
		u8	drop_frag,
		u8	is_ip6
	)

Set NAT virtual fragmentation reassembly configuration.

Parameters

timeout	Reassembly timeout.
max_reass	Maximum number of concurrent reassemblies.
max_frag	Maximum number of fragmets per reassembly
drop_frag	If zero translate fragments, otherwise drop fragments.
is_ip6	1 if IPv6, 0 if IPv4.

Returns: 0 on success, non-zero value otherwise.

Definition at line 85 of file nat_reass.c.

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static clib_error_t* show_nat_reass_command_fn	(	vlib_main_t *	vm,
		unformat_input_t *	input,
		vlib_cli_command_t *	cmd
	)

static

Definition at line 793 of file nat_reass.c.

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Variable Documentation

vlib_cli_command_t nat_reass_command

static

Initial value:

=
{
  .path = "nat virtual-reassembly",
  .short_help = "nat virtual-reassembly ip4|ip6 [max-reassemblies <n>] "
                "[max-fragments <n>] [timeout <sec>] [enable|disable]",
  .function = nat_reass_command_fn,
}

(constructor) VLIB_CLI_COMMAND (nat_reass_command)

Definition at line 816 of file nat_reass.c.

nat_reass_main_t nat_reass_main

Definition at line 24 of file nat_reass.c.

vlib_cli_command_t show_nat_reass_command

static

Initial value:

=
{
  .path = "show nat virtual-reassembly",
  .short_help = "show nat virtual-reassembly",
  .function = show_nat_reass_command_fn,
}

(constructor) VLIB_CLI_COMMAND (show_nat_reass_command)

Definition at line 824 of file nat_reass.c.

Functions

Variables

Detailed Description

Function Documentation

Variable Documentation