vxlan.c File Reference

VXLAN. More...

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Macros
#define	foreach_copy_field

Functions
static u8 *	format_decap_next (u8 *s, va_list *args)
u8 *	format_vxlan_tunnel (u8 *s, va_list *args)
static u8 *	format_vxlan_name (u8 *s, va_list *args)
static uword	dummy_interface_tx (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
static clib_error_t *	vxlan_interface_admin_up_down (vnet_main_t *vnm, u32 hw_if_index, u32 flags)
	VNET_DEVICE_CLASS (vxlan_device_class, static)
static u8 *	format_vxlan_header_with_length (u8 *s, va_list *args)
	VNET_HW_INTERFACE_CLASS (vxlan_hw_class)
static void	vxlan_tunnel_restack_dpo (vxlan_tunnel_t *t)
static vxlan_tunnel_t *	vxlan_tunnel_from_fib_node (fib_node_t *node)
static fib_node_back_walk_rc_t	vxlan_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 DIP to encap node. More...
static fib_node_t *	vxlan_tunnel_fib_node_get (fib_node_index_t index)
	Function definition to get a FIB node from its index. More...
static void	vxlan_tunnel_last_lock_gone (fib_node_t *node)
	Function definition to inform the FIB node that its last lock has gone. More...
static int	vxlan4_rewrite (vxlan_tunnel_t *t)
static int	vxlan6_rewrite (vxlan_tunnel_t *t)
static int	vxlan_check_decap_next (vxlan_main_t *vxm, u32 is_ip6, u32 decap_next_index)
static uword	vtep_addr_ref (ip46_address_t *ip)
static uword	vtep_addr_unref (ip46_address_t *ip)
static mcast_remote_t *	mcast_ep_get (ip46_address_t *ip)
static void	mcast_ep_add (mcast_remote_t *new_ep)
static void	mcast_ep_remove (mcast_remote_t *ep)
static void	ip46_multicast_ethernet_address (u8 *ethernet_address, ip46_address_t *ip)
int	vnet_vxlan_add_del_tunnel (vnet_vxlan_add_del_tunnel_args_t *a, u32 *sw_if_indexp)
static u32	fib4_index_from_fib_id (u32 fib_id)
static u32	fib6_index_from_fib_id (u32 fib_id)
static uword	get_decap_next_for_node (u32 node_index, u32 ipv4_set)
static uword	unformat_decap_next (unformat_input_t *input, va_list *args)
static clib_error_t *	vxlan_add_del_tunnel_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	show_vxlan_tunnel_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
clib_error_t *	vxlan_init (vlib_main_t *vm)

Variables
vxlan_main_t	vxlan_main
static const fib_node_vft_t	vxlan_vft
static vlib_cli_command_t	create_vxlan_tunnel_command
	(constructor) VLIB_CLI_COMMAND (create_vxlan_tunnel_command) More...
static vlib_cli_command_t	show_vxlan_tunnel_command
	(constructor) VLIB_CLI_COMMAND (show_vxlan_tunnel_command) More...

Detailed Description

VXLAN.

VXLAN 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 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 (Virtual eXtensible VLAN) segment.

Definition in file vxlan.c.

Macro Definition Documentation

#define foreach_copy_field

Value:

_(vni)                                          \
_(mcast_sw_if_index)                            \
_(encap_fib_index)                              \
_(decap_next_index)                             \
_(src)                                          \
_(dst)

Definition at line 197 of file vxlan.c.

Function Documentation

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

static

Definition at line 83 of file vxlan.c.

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static u32 fib4_index_from_fib_id ( u32  fib_id )

static

Definition at line 589 of file vxlan.c.

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static u32 fib6_index_from_fib_id ( u32  fib_id )

static

Definition at line 601 of file vxlan.c.

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

static

Definition at line 41 of file vxlan.c.

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

static

Definition at line 110 of file vxlan.c.

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

static

Definition at line 77 of file vxlan.c.

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

Definition at line 57 of file vxlan.c.

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static uword get_decap_next_for_node ( u32  node_index, u32  ipv4_set  )

static

Definition at line 613 of file vxlan.c.

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static void ip46_multicast_ethernet_address ( u8 *  ethernet_address, ip46_address_t *  ip  )

static

Definition at line 347 of file vxlan.c.

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static void mcast_ep_add ( mcast_remote_t *  new_ep )

static

Definition at line 330 of file vxlan.c.

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static mcast_remote_t* mcast_ep_get ( ip46_address_t *  ip )

static

Definition at line 321 of file vxlan.c.

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static void mcast_ep_remove ( mcast_remote_t *  ep )

static

Definition at line 340 of file vxlan.c.

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

static

Definition at line 842 of file vxlan.c.

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static uword unformat_decap_next ( unformat_input_t *  input, va_list *  args  )

static

Definition at line 631 of file vxlan.c.

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VNET_DEVICE_CLASS	(	vxlan_device_class	,
		static
	)

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VNET_HW_INTERFACE_CLASS

(

vxlan_hw_class

)

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int vnet_vxlan_add_del_tunnel	(	vnet_vxlan_add_del_tunnel_args_t *	a,
		u32 *	sw_if_indexp
	)

Definition at line 355 of file vxlan.c.

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static uword vtep_addr_ref ( ip46_address_t *  ip )

static

Definition at line 293 of file vxlan.c.

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static uword vtep_addr_unref ( ip46_address_t *  ip )

static

Definition at line 305 of file vxlan.c.

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static int vxlan4_rewrite ( vxlan_tunnel_t *  t )

static

Definition at line 205 of file vxlan.c.

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static int vxlan6_rewrite ( vxlan_tunnel_t *  t )

static

Definition at line 238 of file vxlan.c.

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

static

Definition at line 652 of file vxlan.c.

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static int vxlan_check_decap_next ( vxlan_main_t *  vxm, u32  is_ip6, u32  decap_next_index  )

static

Definition at line 271 of file vxlan.c.

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clib_error_t* vxlan_init

(

vlib_main_t *

vm

)

Definition at line 878 of file vxlan.c.

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

static

Definition at line 92 of file vxlan.c.

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static fib_node_back_walk_rc_t vxlan_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 DIP to encap node.

Definition at line 152 of file vxlan.c.

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static fib_node_t* vxlan_tunnel_fib_node_get ( fib_node_index_t  index )

static

Function definition to get a FIB node from its index.

Definition at line 163 of file vxlan.c.

static vxlan_tunnel_t* vxlan_tunnel_from_fib_node ( fib_node_t *  node )

static

Definition at line 138 of file vxlan.c.

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static void vxlan_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 177 of file vxlan.c.

static void vxlan_tunnel_restack_dpo ( vxlan_tunnel_t *  t )

static

Definition at line 124 of file vxlan.c.

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Variable Documentation

vlib_cli_command_t create_vxlan_tunnel_command

static

Initial value:

= {
  .path = "create vxlan tunnel",
  .short_help = 
  "create vxlan tunnel src <local-vtep-addr>"
  " {dst <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} vni <nn>"
  " [encap-vrf-id <nn>] [decap-next [l2|node <name>]] [del]",
  .function = vxlan_add_del_tunnel_command_fn,
}

(constructor) VLIB_CLI_COMMAND (create_vxlan_tunnel_command)

Definition at line 831 of file vxlan.c.

vlib_cli_command_t show_vxlan_tunnel_command

static

Initial value:

= {
    .path = "show vxlan tunnel",
    .short_help = "show vxlan tunnel",
    .function = show_vxlan_tunnel_command_fn,
}

(constructor) VLIB_CLI_COMMAND (show_vxlan_tunnel_command)

Definition at line 870 of file vxlan.c.

vxlan_main_t vxlan_main

Definition at line 39 of file vxlan.c.

const fib_node_vft_t vxlan_vft

static

Initial value:

= {
    .fnv_get = vxlan_tunnel_fib_node_get,
    .fnv_last_lock = vxlan_tunnel_last_lock_gone,
    .fnv_back_walk = vxlan_tunnel_back_walk,
}

Definition at line 190 of file vxlan.c.