vxlan_gpe.c File Reference

Common utility functions for IPv4 and IPv6 VXLAN GPE tunnels. More...

Include dependency graph for vxlan_gpe.c:

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Macros
#define	foreach_gpe_copy_field
#define	foreach_copy_ipv4
#define	foreach_copy_ipv6

Functions
static u8 *	format_decap_next (u8 *s, va_list *args)
u8 *	format_vxlan_gpe_tunnel (u8 *s, va_list *args)
	Format function for VXLAN GPE tunnel. More...
static u8 *	format_vxlan_gpe_name (u8 *s, va_list *args)
	Naming for VXLAN GPE tunnel. More...
static clib_error_t *	vxlan_gpe_interface_admin_up_down (vnet_main_t *vnm, u32 hw_if_index, u32 flags)
	CLI function for VXLAN GPE admin up/down. More...
	VNET_DEVICE_CLASS (vxlan_gpe_device_class, static)
static u8 *	format_vxlan_gpe_header_with_length (u8 *s, va_list *args)
	Formatting function for tracing VXLAN GPE with length. More...
	VNET_HW_INTERFACE_CLASS (vxlan_gpe_hw_class)
static void	vxlan_gpe_tunnel_restack_dpo (vxlan_gpe_tunnel_t *t)
static vxlan_gpe_tunnel_t *	vxlan_gpe_tunnel_from_fib_node (fib_node_t *node)
static fib_node_back_walk_rc_t	vxlan_gpe_tunnel_back_walk (fib_node_t *node, fib_node_back_walk_ctx_t *ctx)
	Function definition to backwalk a FIB node - Here we will restack the new dpo of VXLAN_GPE DIP to encap node. More...
static fib_node_t *	vxlan_gpe_tunnel_fib_node_get (fib_node_index_t index)
	Function definition to get a FIB node from its index. More...
static void	vxlan_gpe_tunnel_last_lock_gone (fib_node_t *node)
	Function definition to inform the FIB node that its last lock has gone. More...
int	vxlan4_gpe_rewrite (vxlan_gpe_tunnel_t *t, u32 extension_size, u8 protocol_override, uword encap_next_node)
	Calculate IPv4 VXLAN GPE rewrite header. More...
int	vxlan6_gpe_rewrite (vxlan_gpe_tunnel_t *t, u32 extension_size, u8 protocol_override, uword encap_next_node)
	Calculate IPv6 VXLAN GPE rewrite header. More...
typedef	CLIB_PACKED (union { struct { fib_node_index_t mfib_entry_index;adj_index_t mcast_adj_index;};u64 as_u64;})
static void	mcast_shared_add (ip46_address_t *remote, fib_node_index_t mfei, adj_index_t ai)
static void	mcast_shared_remove (ip46_address_t *remote)
int	vnet_vxlan_gpe_add_del_tunnel (vnet_vxlan_gpe_add_del_tunnel_args_t *a, u32 *sw_if_indexp)
	Add or Del a VXLAN GPE tunnel. More...
static clib_error_t *	vxlan_gpe_add_del_tunnel_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	show_vxlan_gpe_tunnel_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
	CLI function for showing VXLAN GPE tunnels. More...
void	vnet_int_vxlan_gpe_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable)
static clib_error_t *	set_ip_vxlan_gpe_bypass (u32 is_ip6, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	set_ip4_vxlan_gpe_bypass (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	set_ip6_vxlan_gpe_bypass (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
	VNET_FEATURE_INIT (ip4_vxlan_gpe_bypass, static)
	VNET_FEATURE_INIT (ip6_vxlan_gpe_bypass, static)
clib_error_t *	vxlan_gpe_init (vlib_main_t *vm)
	Feature init function for VXLAN GPE. More...

Variables
vxlan_gpe_main_t	vxlan_gpe_main
static const fib_node_vft_t	vxlan_gpe_vft
static vlib_cli_command_t	create_vxlan_gpe_tunnel_command
	(constructor) VLIB_CLI_COMMAND (create_vxlan_gpe_tunnel_command) More...
static vlib_cli_command_t	show_vxlan_gpe_tunnel_command
	(constructor) VLIB_CLI_COMMAND (show_vxlan_gpe_tunnel_command) More...
static vlib_cli_command_t	set_interface_ip_vxlan_gpe_bypass_command
	(constructor) VLIB_CLI_COMMAND (set_interface_ip_vxlan_gpe_bypass_command) More...
static vlib_cli_command_t	set_interface_ip6_vxlan_gpe_bypass_command
	(constructor) VLIB_CLI_COMMAND (set_interface_ip6_vxlan_gpe_bypass_command) More...

Detailed Description

Common utility functions for IPv4 and IPv6 VXLAN GPE tunnels.

VXLAN-GPE.

VXLAN-GPE provides the features needed to allow L2 bridge domains (BDs) to span multiple servers. This is done by building an L2 overlay on top of an L3 network underlay using VXLAN-GPE tunnels.

This makes it possible for servers to be co-located in the same data center or be separated geographically as long as they are reachable through the underlay L3 network.

You can refer to this kind of L2 overlay bridge domain as a VXLAN-GPE segment.

Definition in file vxlan_gpe.c.

Macro Definition Documentation

foreach_copy_ipv4

#define foreach_copy_ipv4

Value:

{                     \
  _(local.ip4.as_u32)                           \
  _(remote.ip4.as_u32)                          \
}

Definition at line 257 of file vxlan_gpe.c.

foreach_copy_ipv6

#define foreach_copy_ipv6

Value:

{                     \
  _(local.ip6.as_u64[0])                        \
  _(local.ip6.as_u64[1])                        \
  _(remote.ip6.as_u64[0])                       \
  _(remote.ip6.as_u64[1])                       \
}

Definition at line 262 of file vxlan_gpe.c.

foreach_gpe_copy_field

#define foreach_gpe_copy_field

Value:

_(vni)                                          \
_(protocol)                                     \
_(mcast_sw_if_index)                            \
_(encap_fib_index)                              \
_(decap_fib_index)

Definition at line 250 of file vxlan_gpe.c.

Function Documentation

CLIB_PACKED()

typedef CLIB_PACKED

(

union { struct { fib_node_index_t mfib_entry_index;adj_index_t mcast_adj_index;};u64 as_u64;}

)

Definition at line 388 of file vxlan_gpe.c.

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format_decap_next()

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

static

Definition at line 49 of file vxlan_gpe.c.

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format_vxlan_gpe_header_with_length()

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

static

Formatting function for tracing VXLAN GPE with length.

Parameters

*s
*args

Returns

*s

Definition at line 165 of file vxlan_gpe.c.

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format_vxlan_gpe_name()

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

static

Naming for VXLAN GPE tunnel.

Parameters

*s	formatting string
*args

Returns

*s formatted string

Definition at line 118 of file vxlan_gpe.c.

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format_vxlan_gpe_tunnel()

u8* format_vxlan_gpe_tunnel	(	u8 *	s,
		va_list *	args
	)

Format function for VXLAN GPE tunnel.

Parameters

*s	formatting string
*args

Returns

*s formatted string

Definition at line 84 of file vxlan_gpe.c.

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mcast_shared_add()

static void mcast_shared_add ( ip46_address_t *  remote, fib_node_index_t  mfei, adj_index_t  ai  )

inlinestatic

Definition at line 409 of file vxlan_gpe.c.

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mcast_shared_remove()

static void mcast_shared_remove ( ip46_address_t *  remote )

inlinestatic

Definition at line 421 of file vxlan_gpe.c.

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set_ip4_vxlan_gpe_bypass()

static clib_error_t* set_ip4_vxlan_gpe_bypass ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 1082 of file vxlan_gpe.c.

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set_ip6_vxlan_gpe_bypass()

static clib_error_t* set_ip6_vxlan_gpe_bypass ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 1139 of file vxlan_gpe.c.

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set_ip_vxlan_gpe_bypass()

static clib_error_t* set_ip_vxlan_gpe_bypass ( u32  is_ip6, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 1038 of file vxlan_gpe.c.

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show_vxlan_gpe_tunnel_command_fn()

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

static

CLI function for showing VXLAN GPE tunnels.

Parameters

*vm
*input
*cmd

Returns

error

Definition at line 989 of file vxlan_gpe.c.

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VNET_DEVICE_CLASS()

VNET_DEVICE_CLASS	(	vxlan_gpe_device_class	,
		static
	)

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VNET_FEATURE_INIT() [1/2]

VNET_FEATURE_INIT	(	ip4_vxlan_gpe_bypass	,
		static
	)

VNET_FEATURE_INIT() [2/2]

VNET_FEATURE_INIT	(	ip6_vxlan_gpe_bypass	,
		static
	)

VNET_HW_INTERFACE_CLASS()

VNET_HW_INTERFACE_CLASS

(

vxlan_gpe_hw_class

)

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vnet_int_vxlan_gpe_bypass_mode()

void vnet_int_vxlan_gpe_bypass_mode	(	u32	sw_if_index,
		u8	is_ip6,
		u8	is_enable
	)

Definition at line 1026 of file vxlan_gpe.c.

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vnet_vxlan_gpe_add_del_tunnel()

int vnet_vxlan_gpe_add_del_tunnel	(	vnet_vxlan_gpe_add_del_tunnel_args_t *	a,
		u32 *	sw_if_indexp
	)

Add or Del a VXLAN GPE tunnel.

Parameters

*a
*sw_if_index

Returns

rc

Definition at line 441 of file vxlan_gpe.c.

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vxlan4_gpe_rewrite()

int vxlan4_gpe_rewrite	(	vxlan_gpe_tunnel_t *	t,
		u32	extension_size,
		u8	protocol_override,
		uword	encap_next_node
	)

Calculate IPv4 VXLAN GPE rewrite header.

Parameters

*t

Returns

rc

Definition at line 279 of file vxlan_gpe.c.

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vxlan6_gpe_rewrite()

int vxlan6_gpe_rewrite	(	vxlan_gpe_tunnel_t *	t,
		u32	extension_size,
		u8	protocol_override,
		uword	encap_next_node
	)

Calculate IPv6 VXLAN GPE rewrite header.

Parameters

*t

Returns

rc

Definition at line 337 of file vxlan_gpe.c.

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vxlan_gpe_add_del_tunnel_command_fn()

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

static

Definition at line 733 of file vxlan_gpe.c.

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vxlan_gpe_init()

clib_error_t* vxlan_gpe_init

(

vlib_main_t *

vm

)

Feature init function for VXLAN GPE.

Parameters

*vm

Returns

error

Definition at line 1220 of file vxlan_gpe.c.

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vxlan_gpe_interface_admin_up_down()

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

static

CLI function for VXLAN GPE admin up/down.

Parameters

*vnm
hw_if_index
flag

Returns

*rc

Definition at line 135 of file vxlan_gpe.c.

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vxlan_gpe_tunnel_back_walk()

static fib_node_back_walk_rc_t vxlan_gpe_tunnel_back_walk ( fib_node_t *  node, fib_node_back_walk_ctx_t *  ctx  )

static

Function definition to backwalk a FIB node - Here we will restack the new dpo of VXLAN_GPE DIP to encap node.

Definition at line 207 of file vxlan_gpe.c.

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vxlan_gpe_tunnel_fib_node_get()

static fib_node_t* vxlan_gpe_tunnel_fib_node_get ( fib_node_index_t  index )

static

Function definition to get a FIB node from its index.

Definition at line 217 of file vxlan_gpe.c.

vxlan_gpe_tunnel_from_fib_node()

static vxlan_gpe_tunnel_t* vxlan_gpe_tunnel_from_fib_node ( fib_node_t *  node )

static

Definition at line 194 of file vxlan_gpe.c.

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vxlan_gpe_tunnel_last_lock_gone()

static void vxlan_gpe_tunnel_last_lock_gone ( fib_node_t *  node )

static

Function definition to inform the FIB node that its last lock has gone.

Definition at line 231 of file vxlan_gpe.c.

vxlan_gpe_tunnel_restack_dpo()

static void vxlan_gpe_tunnel_restack_dpo ( vxlan_gpe_tunnel_t *  t )

static

Definition at line 181 of file vxlan_gpe.c.

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Variable Documentation

create_vxlan_gpe_tunnel_command

vlib_cli_command_t create_vxlan_gpe_tunnel_command

static

Initial value:

= {
  .path = "create vxlan-gpe tunnel",
  .short_help =
  "create vxlan-gpe tunnel local <local-addr> "
  " {remote <remote-addr>|group <mcast-addr> <intf-name>}"
  " vni <nn> [next-ip4][next-ip6][next-ethernet][next-nsh]"
  " [encap-vrf-id <nn>] [decap-vrf-id <nn>] [del]\n",
  .function = vxlan_gpe_add_del_tunnel_command_fn,
}

(constructor) VLIB_CLI_COMMAND (create_vxlan_gpe_tunnel_command)

Definition at line 967 of file vxlan_gpe.c.

set_interface_ip6_vxlan_gpe_bypass_command

vlib_cli_command_t set_interface_ip6_vxlan_gpe_bypass_command

static

Initial value:

= {
  .path = "set interface ip6 vxlan-gpe-bypass",
  .function = set_ip6_vxlan_gpe_bypass,
  .short_help = "set interface ip6 vxlan-gpe-bypass <interface> [del]",
}

(constructor) VLIB_CLI_COMMAND (set_interface_ip6_vxlan_gpe_bypass_command)

Definition at line 1188 of file vxlan_gpe.c.

set_interface_ip_vxlan_gpe_bypass_command

vlib_cli_command_t set_interface_ip_vxlan_gpe_bypass_command

static

Initial value:

= {
  .path = "set interface ip vxlan-gpe-bypass",
  .function = set_ip4_vxlan_gpe_bypass,
  .short_help = "set interface ip vxlan-gpe-bypass <interface> [del]",
}

(constructor) VLIB_CLI_COMMAND (set_interface_ip_vxlan_gpe_bypass_command)

Definition at line 1131 of file vxlan_gpe.c.

show_vxlan_gpe_tunnel_command

vlib_cli_command_t show_vxlan_gpe_tunnel_command

static

Initial value:

= {
    .path = "show vxlan-gpe",
    .function = show_vxlan_gpe_tunnel_command_fn,
}

(constructor) VLIB_CLI_COMMAND (show_vxlan_gpe_tunnel_command)

Definition at line 1019 of file vxlan_gpe.c.

vxlan_gpe_main

vxlan_gpe_main_t vxlan_gpe_main

Definition at line 46 of file vxlan_gpe.c.

vxlan_gpe_vft

const fib_node_vft_t vxlan_gpe_vft

static

Initial value:

= {
  .fnv_get = vxlan_gpe_tunnel_fib_node_get,
  .fnv_last_lock = vxlan_gpe_tunnel_last_lock_gone,
  .fnv_back_walk = vxlan_gpe_tunnel_back_walk,
}

Definition at line 244 of file vxlan_gpe.c.