Include dependency graph for gre.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	gre_protocol_info_t
	A GRE payload protocol registration. More...

struct	gre_tunnel_key4_t_
	Key for a IPv4 GRE Tunnel. More...

struct	gre_tunnel_key6_t_
	Key for a IPv6 GRE Tunnel We use a different type so that the V4 key hash is as small as possible. More...

union	gre_tunnel_key_t_
	Union of the two possible key types. More...

struct	gre_sn_t
	Used for GRE header seq number generation for ERSPAN encap. More...

struct	gre_sn_key_t
	Hash key for GRE header seq number generation for ERSPAN encap. More...

struct	gre_tunnel_t
	A representation of a GRE tunnel. More...

struct	next_info_t

struct	gre_main_t
	GRE related global data. More...

struct	vnet_gre_add_del_tunnel_args_t

Macros
#define	gre_error(n, s) GRE_ERROR_##n,

#define	GRE_TUNNEL_TYPE_NAMES

#define	GTK_FIB_INDEX_SHIFT 12

#define	GTK_FIB_INDEX_MASK 0xfffff000

#define	GTK_TYPE_SHIFT 0

#define	GTK_TYPE_MASK 0x3

#define	GTK_SESSION_ID_SHIFT 2

#define	GTK_SESSION_ID_MASK 0xffc

#define	GTK_SESSION_ID_MAX (GTK_SESSION_ID_MASK >> GTK_SESSION_ID_SHIFT)

#define	GRE_OUTPUT_NEXT_LOOKUP 1

Typedefs
typedef enum gre_tunnel_type_t_	gre_tunnel_type_t
	The GRE tunnel type. More...

typedef struct gre_tunnel_key4_t_	gre_tunnel_key4_t
	Key for a IPv4 GRE Tunnel. More...

typedef struct gre_tunnel_key6_t_	gre_tunnel_key6_t
	Key for a IPv6 GRE Tunnel We use a different type so that the V4 key hash is as small as possible. More...

typedef union gre_tunnel_key_t_	gre_tunnel_key_t
	Union of the two possible key types. More...

Enumerations
enum	gre_error_t { GRE_N_ERROR }

enum	gre_tunnel_type_t_ { GRE_TUNNEL_TYPE_L3 = 0, GRE_TUNNEL_TYPE_TEB = 1, GRE_TUNNEL_TYPE_ERSPAN = 2, GRE_TUNNEL_TYPE_N }
	The GRE tunnel type. More...

Functions
typedef	CLIB_PACKED (struct{ip4_header_t ip4;gre_header_t gre;}) ip4_and_gre_header_t
	IPv4 and GRE header. More...

typedef	CLIB_PACKED (struct{ip6_header_t ip6;gre_header_t gre;}) ip6_and_gre_header_t
	IPv6 and GRE header. More...

static gre_protocol_info_t *	gre_get_protocol_info (gre_main_t *em, gre_protocol_t protocol)

clib_error_t *	gre_interface_admin_up_down (vnet_main_t *vnm, u32 hw_if_index, u32 flags)

void	gre_tunnel_stack (adj_index_t ai)
	gre_tunnel_stack More...

void	gre_update_adj (vnet_main_t *vnm, u32 sw_if_index, adj_index_t ai)

void	gre_register_input_protocol (vlib_main_t *vm, gre_protocol_t protocol, u32 node_index, gre_tunnel_type_t tunnel_type)

int	vnet_gre_add_del_tunnel (vnet_gre_add_del_tunnel_args_t a, u32 sw_if_indexp)

static void	gre_mk_key4 (ip4_address_t src, ip4_address_t dst, u32 fib_index, u8 ttype, u16 session_id, gre_tunnel_key4_t *key)

static int	gre_match_key4 (const gre_tunnel_key4_t key1, const gre_tunnel_key4_t key2)

static void	gre_mk_key6 (const ip6_address_t src, const ip6_address_t dst, u32 fib_index, u8 ttype, u16 session_id, gre_tunnel_key6_t *key)

static int	gre_match_key6 (const gre_tunnel_key6_t key1, const gre_tunnel_key6_t key2)

static void	gre_mk_sn_key (const gre_tunnel_t gt, gre_sn_key_t key)

Variables
vnet_hw_interface_class_t	gre_hw_interface_class

gre_main_t	gre_main

format_function_t	format_gre_protocol

format_function_t	format_gre_header

format_function_t	format_gre_header_with_length

vlib_node_registration_t	gre4_input_node
	(constructor) VLIB_REGISTER_NODE (gre4_input_node) More...

vlib_node_registration_t	gre6_input_node
	(constructor) VLIB_REGISTER_NODE (gre6_input_node) More...

vlib_node_registration_t	gre_encap_node
	(constructor) VLIB_REGISTER_NODE (gre_encap_node) More...

vnet_device_class_t	gre_device_class

unformat_function_t	unformat_gre_protocol_host_byte_order

unformat_function_t	unformat_gre_protocol_net_byte_order

unformat_function_t	unformat_gre_header

unformat_function_t	unformat_pg_gre_header

Macro Definition Documentation

#define gre_error	(	n,
		s
	)	GRE_ERROR_##n,

Definition at line 32 of file gre.h.

#define GRE_OUTPUT_NEXT_LOOKUP 1

Definition at line 363 of file gre.h.

#define GRE_TUNNEL_TYPE_NAMES

Value:

{    \
    [GRE_TUNNEL_TYPE_L3] = "L3",   \
    [GRE_TUNNEL_TYPE_TEB] = "TEB", \
    [GRE_TUNNEL_TYPE_ERSPAN] = "ERSPAN", \
}

Definition at line 62 of file gre.h.

#define GTK_FIB_INDEX_MASK 0xfffff000

Definition at line 138 of file gre.h.

#define GTK_FIB_INDEX_SHIFT 12

Definition at line 137 of file gre.h.

#define GTK_SESSION_ID_MASK 0xffc

Definition at line 142 of file gre.h.

#define GTK_SESSION_ID_MAX (GTK_SESSION_ID_MASK >> GTK_SESSION_ID_SHIFT)

Definition at line 143 of file gre.h.

#define GTK_SESSION_ID_SHIFT 2

Definition at line 141 of file gre.h.

#define GTK_TYPE_MASK 0x3

Definition at line 140 of file gre.h.

#define GTK_TYPE_SHIFT 0

Definition at line 139 of file gre.h.

Typedef Documentation

typedef struct gre_tunnel_key4_t_ gre_tunnel_key4_t

Key for a IPv4 GRE Tunnel.

typedef struct gre_tunnel_key6_t_ gre_tunnel_key6_t

Key for a IPv6 GRE Tunnel We use a different type so that the V4 key hash is as small as possible.

typedef union gre_tunnel_key_t_ gre_tunnel_key_t

Union of the two possible key types.

typedef enum gre_tunnel_type_t_ gre_tunnel_type_t

The GRE tunnel type.

Enumeration Type Documentation

enum gre_error_t

Enumerator
GRE_N_ERROR

Definition at line 30 of file gre.h.

enum gre_tunnel_type_t_

The GRE tunnel type.

Enumerator
GRE_TUNNEL_TYPE_L3	L3 GRE (i.e. this tunnel is in L3 mode)
GRE_TUNNEL_TYPE_TEB	Transparent Ethernet Bridging - the tunnel is in L2 mode.
GRE_TUNNEL_TYPE_ERSPAN	ERSPAN type 2 - the tunnel is for port mirror SPAN output. Each tunnel is associated with a session ID and expected to be used for encap and output of mirrored packet from a L2 network only. There is no support for receiving ERSPAN packets from a GRE ERSPAN tunnel in VPP.
GRE_TUNNEL_TYPE_N

Definition at line 41 of file gre.h.

Function Documentation

typedef CLIB_PACKED ( struct{ip4_header_t ip4;gre_header_t gre;} )

IPv4 and GRE header.

typedef CLIB_PACKED ( struct{ip6_header_t ip6;gre_header_t gre;} )

IPv6 and GRE header.

static gre_protocol_info_t* gre_get_protocol_info	(	gre_main_t *	em,
		gre_protocol_t	protocol
	)

inlinestatic

Definition at line 325 of file gre.h.

Here is the call graph for this function: