dynamic tap interface hookup More...

Include dependency graph for tapcli.c:

Data Structures
struct	tapcli_interface_t
	Struct for the tapcli interface. More...

struct	tapcli_rx_trace_t
	Struct for RX trace. More...

struct	tapcli_main_t
	TAPCLI main state struct. More...

Functions
static void	tapcli_nopunt_frame (vlib_main_t vm, vlib_node_runtime_t node, vlib_frame_t *frame)
	Free "no punt" frame. More...

u8 *	format_tapcli_rx_trace (u8 s, va_list va)
	Function to format TAP CLI trace. More...

static uword	tapcli_tx (vlib_main_t vm, vlib_node_runtime_t node, vlib_frame_t *frame)
	tapcli TX node function More...

static uword	tapcli_rx_iface (vlib_main_t vm, vlib_node_runtime_t node, tapcli_interface_t *ti)
	Dispatch tapcli RX node function for node tap_cli_rx. More...

static uword	tapcli_rx (vlib_main_t vm, vlib_node_runtime_t node, vlib_frame_t *frame)
	tapcli RX node function More...

static clib_error_t *	tapcli_read_ready (unix_file_t *uf)
	Gets called when file descriptor is ready from epoll. More...

static clib_error_t *	tapcli_config (vlib_main_t vm, unformat_input_t input)
	CLI function for TAPCLI configuration. More...

static int	tap_name_renumber (vnet_hw_interface_t *hi, u32 new_dev_instance)
	Renumber TAPCLI interface. More...

	VNET_HW_INTERFACE_CLASS (tapcli_interface_class, static)

static u8 *	format_tapcli_interface_name (u8 s, va_list args)
	Formatter for TAPCLI interface name. More...

static u32	tapcli_flag_change (vnet_main_t vnm, vnet_hw_interface_t hw, u32 flags)
	Modify interface flags for TAPCLI interface. More...

static void	tapcli_set_interface_next_node (vnet_main_t *vnm, u32 hw_if_index, u32 node_index)
	Setting the TAP interface's next processing node. More...

static clib_error_t *	tapcli_interface_admin_up_down (vnet_main_t *vnm, u32 hw_if_index, u32 flags)
	Set link_state == admin_state otherwise things like ip6 neighbor discovery breaks. More...

	VNET_DEVICE_CLASS (tapcli_dev_class, static)

int	vnet_tap_dump_ifs (tapcli_interface_details_t **out_tapids)
	Dump TAP interfaces. More...

static tapcli_interface_t *	tapcli_get_new_tapif ()
	Get tap interface from inactive interfaces or create new. More...

int	vnet_tap_connect (vlib_main_t vm, u8 intfc_name, u8 hwaddr_arg, u32 sw_if_indexp)
	Connect a TAP interface. More...

int	vnet_tap_connect_renumber (vlib_main_t vm, u8 intfc_name, u8 hwaddr_arg, u32 sw_if_indexp, u8 renumber, u32 custom_dev_instance)
	Renumber a TAP interface. More...

static int	tapcli_tap_disconnect (tapcli_interface_t *ti)
	Disconnect TAP CLI interface. More...

int	vnet_tap_delete (vlib_main_t *vm, u32 sw_if_index)
	Delete TAP interface. More...

static clib_error_t *	tap_delete_command_fn (vlib_main_t vm, unformat_input_t input, vlib_cli_command_t *cmd)
	CLI function to delete TAP interface. More...

int	vnet_tap_modify (vlib_main_t vm, u32 orig_sw_if_index, u8 intfc_name, u8 hwaddr_arg, u32 sw_if_indexp, u8 renumber, u32 custom_dev_instance)
	Modifies tap interface - can result in new interface being created. More...

static clib_error_t *	tap_modify_command_fn (vlib_main_t vm, unformat_input_t input, vlib_cli_command_t *cmd)
	CLI function to modify TAP interface. More...

static clib_error_t *	tap_connect_command_fn (vlib_main_t vm, unformat_input_t input, vlib_cli_command_t *cmd)
	CLI function to connect TAP interface. More...

clib_error_t *	tapcli_init (vlib_main_t *vm)
	TAPCLI main init. More...

Variables
static vnet_device_class_t	tapcli_dev_class

static vnet_hw_interface_class_t	tapcli_interface_class

static vlib_node_registration_t	tapcli_rx_node
	(constructor) VLIB_REGISTER_NODE (tapcli_rx_node) More...

static tapcli_main_t	tapcli_main

static vlib_node_registration_t	tapcli_tx_node
	(constructor) VLIB_REGISTER_NODE (tapcli_tx_node) More...

static char *	tapcli_rx_error_strings []
	TAPCLI error strings. More...

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

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

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

Detailed Description

dynamic tap interface hookup

Definition in file tapcli.c.

Function Documentation

static u8* format_tapcli_interface_name	(	u8 *	s,
		va_list *	args
	)

static

Formatter for TAPCLI interface name.

Parameters

*s	- formatter string
*args	- va_list

Returns: *s - formatted string

Definition at line 581 of file tapcli.c.

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u8* format_tapcli_rx_trace	(	u8 *	s,
		va_list *	va
	)

Function to format TAP CLI trace.

Parameters

*s	- u8 - formatting string
*va	- va_list

Returns: *s - u8 - formatted string

Definition at line 86 of file tapcli.c.

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

static

CLI function to connect TAP interface.

Parameters

*vm	- vlib_main_t
*input	- unformat_input_t
*cmd	- vlib_cli_command_t

Returns: error - clib_error_t

Definition at line 1214 of file tapcli.c.

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

static

CLI function to delete TAP interface.

Parameters

*vm	- vlib_main_t
*input	- unformat_input_t
*cmd	- vlib_cli_command_t

Returns: error - clib_error_t

Definition at line 1070 of file tapcli.c.

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

static

CLI function to modify TAP interface.

Parameters

*vm	- vlib_main_t
*input	- unformat_input_t
*cmd	- vlib_cli_command_t

Returns: error - clib_error_t

Definition at line 1148 of file tapcli.c.

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static int tap_name_renumber	(	vnet_hw_interface_t *	hi,
		u32	new_dev_instance
	)

static

Renumber TAPCLI interface.

Parameters

*hi	- vnet_hw_interface_t
new_dev_instance	- u32

Returns: rc - int

Definition at line 532 of file tapcli.c.

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static clib_error_t* tapcli_config	(	vlib_main_t *	vm,
		unformat_input_t *	input
	)

static

CLI function for TAPCLI configuration.

Parameters

*vm	- vlib_main_t
*input	- unformat_input_t

Returns: error - clib_error_t

Definition at line 492 of file tapcli.c.

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static u32 tapcli_flag_change	(	vnet_main_t *	vnm,
		vnet_hw_interface_t *	hw,
		u32	flags
	)

static

Modify interface flags for TAPCLI interface.

Parameters

*vnm	- vnet_main_t
*hw	- vnet_hw_interface_t
flags	- u32

Returns: rc - u32

Definition at line 607 of file tapcli.c.

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static tapcli_interface_t* tapcli_get_new_tapif ( )

static

Get tap interface from inactive interfaces or create new.

Returns: interface - tapcli_interface_t

Definition at line 758 of file tapcli.c.

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clib_error_t* tapcli_init ( vlib_main_t * vm )

TAPCLI main init.

Parameters

*vm	- vlib_main_t

Returns: error - clib_error_t

Definition at line 1311 of file tapcli.c.

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static clib_error_t* tapcli_interface_admin_up_down	(	vnet_main_t *	vnm,
		u32	hw_if_index,
		u32	flags
	)

static

Set link_state == admin_state otherwise things like ip6 neighbor discovery breaks.

Parameters

*vnm	- vnet_main_t
hw_if_index	- u32
flags	- u32

Returns: error - clib_error_t

Definition at line 698 of file tapcli.c.

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static void tapcli_nopunt_frame	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

static

Free "no punt" frame.

Parameters

*vm	- vlib_main_t
*node	- vlib_node_runtime_t
*frame	- vlib_frame_t

Definition at line 557 of file tapcli.c.

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static clib_error_t* tapcli_read_ready ( unix_file_t * uf )

static

Gets called when file descriptor is ready from epoll.

Parameters

*uf	- unix_file_t

Returns: error - clib_error_t

Schedule the rx node

Mark the specific tap interface ready-to-read

Definition at line 461 of file tapcli.c.

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static uword tapcli_rx	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

static

tapcli RX node function

Node Identifier:: tap-cli-rx

Input node from the Kernel tun/tap device

Parameters

*vm	- vlib_main_t
*node	- vlib_node_runtime_t
*frame	- vlib_frame_t

Returns: n_packets - uword

Definition at line 402 of file tapcli.c.

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static uword tapcli_rx_iface	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		tapcli_interface_t *	ti
	)

static

Dispatch tapcli RX node function for node tap_cli_rx.

Parameters

*vm	- vlib_main_t
*node	- vlib_node_runtime_t
*ti	- tapcli_interface_t

Returns: n_packets - uword

Definition at line 251 of file tapcli.c.

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static void tapcli_set_interface_next_node	(	vnet_main_t *	vnm,
		u32	hw_if_index,
		u32	node_index
	)

static

Setting the TAP interface's next processing node.

Parameters

*vnm	- vnet_main_t
hw_if_index	- u32
node_index	- u32

Shut off redirection

Definition at line 667 of file tapcli.c.

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static int tapcli_tap_disconnect ( tapcli_interface_t * ti )

static

Disconnect TAP CLI interface.

Parameters

*ti	- tapcli_interface_t

Returns: rc - int

Definition at line 995 of file tapcli.c.

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static uword tapcli_tx	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

static

tapcli TX node function

Node Identifier:: tap-cli-tx

Output node, writes the buffers comprising the incoming frame to the tun/tap device, aka hands them to the Linux kernel stack.

Parameters

*vm	- vlib_main_t
*node	- vlib_node_runtime_t
*frame	- vlib_frame_t

Returns: n_packets - uword

Definition at line 160 of file tapcli.c.

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VNET_DEVICE_CLASS	(	tapcli_dev_class	,
		static
	)

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VNET_HW_INTERFACE_CLASS	(	tapcli_interface_class	,
		static
	)

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int vnet_tap_connect	(	vlib_main_t *	vm,
		u8 *	intfc_name,
		u8 *	hwaddr_arg,
		u32 *	sw_if_indexp
	)

Connect a TAP interface.

Parameters

vm	- vlib_main_t
intfc_name	- u8
hwaddr_arg	- u8
sw_if_indexp	- u32

Returns: rc - int

Definition at line 794 of file tapcli.c.

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int vnet_tap_connect_renumber	(	vlib_main_t *	vm,
		u8 *	intfc_name,
		u8 *	hwaddr_arg,
		u32 *	sw_if_indexp,
		u8	renumber,
		u32	custom_dev_instance
	)

Renumber a TAP interface.

Parameters

*vm	- vlib_main_t
*intfc_name	- u8
*hwaddr_arg	- u8
*sw_if_indexp	- u32
renumber	- u8
custom_dev_instance	- u32

Returns: rc - int

Definition at line 975 of file tapcli.c.

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int vnet_tap_delete	(	vlib_main_t *	vm,
		u32	sw_if_index
	)

Delete TAP interface.

Parameters

*vm	- vlib_main_t
sw_if_index	- u32

Returns: rc - int

Definition at line 1030 of file tapcli.c.

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int vnet_tap_dump_ifs ( tapcli_interface_details_t ** out_tapids )

Dump TAP interfaces.

Parameters

**out_tapids - tapcli_interface_details_t

Returns: rc - int

Definition at line 731 of file tapcli.c.

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int vnet_tap_modify	(	vlib_main_t *	vm,
		u32	orig_sw_if_index,
		u8 *	intfc_name,
		u8 *	hwaddr_arg,
		u32 *	sw_if_indexp,
		u8	renumber,
		u32	custom_dev_instance
	)

Modifies tap interface - can result in new interface being created.

Parameters

*vm	- vlib_main_t
orig_sw_if_index	- u32
*intfc_name	- u8
*hwaddr_arg	- u8
*sw_if_indexp	- u32
renumber	- u8
custom_dev_instance	- u32

Returns: rc - int

Definition at line 1121 of file tapcli.c.

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Variable Documentation

vlib_cli_command_t tap_connect_command

static

Initial value:

= {
    .path = "tap connect",
    .short_help = "tap connect <intfc-name> [hwaddr <addr>]",
    .function = tap_connect_command_fn,
}

(constructor) VLIB_CLI_COMMAND (tap_connect_command)

Definition at line 1296 of file tapcli.c.

vlib_cli_command_t tap_delete_command

static

Initial value:

= {
    .path = "tap delete",
    .short_help = "tap delete <vpp-tap-intfc-name>",
    .function = tap_delete_command_fn,
}

(constructor) VLIB_CLI_COMMAND (tap_delete_command)

Definition at line 1101 of file tapcli.c.

vlib_cli_command_t tap_modify_command

static

Initial value:

= {
    .path = "tap modify",
    .short_help = "tap modify <vpp-tap-intfc-name> <linux-intfc-name> [hwaddr <addr>]",
    .function = tap_modify_command_fn,
}

(constructor) VLIB_CLI_COMMAND (tap_modify_command)

Definition at line 1197 of file tapcli.c.

vnet_device_class_t tapcli_dev_class

static

Definition at line 46 of file tapcli.c.

vnet_hw_interface_class_t tapcli_interface_class

static

Definition at line 47 of file tapcli.c.

tapcli_main_t tapcli_main

static

Definition at line 143 of file tapcli.c.

char* tapcli_rx_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_tapcli_error
}

TAPCLI error strings.

Definition at line 434 of file tapcli.c.

static vlib_node_registration_t tapcli_rx_node

static

Initial value:

= {
  .function = tapcli_rx,
  .name = "tapcli-rx",
  .sibling_of = "device-input",
  .type = VLIB_NODE_TYPE_INPUT,
  .state = VLIB_NODE_STATE_INTERRUPT,
  .vector_size = 4,
  .n_errors = TAPCLI_N_ERROR,
  .error_strings = tapcli_rx_error_strings,
  .format_trace = format_tapcli_rx_trace,
}

(constructor) VLIB_REGISTER_NODE (tapcli_rx_node)

Definition at line 48 of file tapcli.c.

vlib_node_registration_t tapcli_tx_node

static

Initial value:

= {
  .function = tapcli_tx,
  .name = "tapcli-tx",
  .type = VLIB_NODE_TYPE_INTERNAL,
  .vector_size = 4,
}

(constructor) VLIB_REGISTER_NODE (tapcli_tx_node)

Definition at line 233 of file tapcli.c.

Data Structures

Functions

Variables

Detailed Description

Function Documentation

Variable Documentation