18 #ifndef included_gre_h 19 #define included_gre_h 33 #define gre_error(n,s) GRE_ERROR_##n, 47 #define foreach_gre_tunnel_type \ 57 #define _(n, s) GRE_TUNNEL_TYPE_##n, 64 #define foreach_gre_tunnel_mode \ 65 _(P2P, "point-to-point") \ 66 _(MP, "multi-point") \ 70 #define _(n, s) GRE_TUNNEL_MODE_##n, 172 #define GTK_SESSION_ID_MAX (0x3ff) 308 }) ip4_and_gre_header_t;
318 }) ip6_and_gre_header_t;
331 u32 hw_if_index,
u32 flags);
357 u32 node_index, gre_tunnel_type_t tunnel_type);
360 #define GRE_OUTPUT_NEXT_LOOKUP 1 381 gre_tunnel_type_t ttype,
404 gre_tunnel_type_t ttype,
uword * seq_num_by_key
Hash mapping tunnel src/dst addr and fib-idx to sequence number.
vlib_node_registration_t gre_encap_node
(constructor) VLIB_REGISTER_NODE (gre_encap_node)
vlib_node_registration_t gre4_input_node
(constructor) VLIB_REGISTER_NODE (gre4_input_node)
uword * tunnel_by_key6
Hash mapping to tunnels with ipv6 src/dst addr.
#define CLIB_CACHE_LINE_ALIGN_MARK(mark)
format_function_t format_gre_header_with_length
Key for a IPv6 GRE Tunnel We use a different type so that the V4 key hash is as small as possible...
uword * protocol_info_by_protocol
struct gre_tunnel_key_common_t_ gre_tunnel_key_common_t
Elements of the GRE key that are common for v6 and v6 addresses.
gre_protocol_t protocol
GRE protocol type in host byte order.
char * name
Name (a c string).
A GRE payload protocol registration.
int vnet_gre_tunnel_add_del(vnet_gre_tunnel_add_del_args_t *a, u32 *sw_if_indexp)
u32 outer_fib_index
The FIB in which the src.dst address are present.
STATIC_ASSERT_SIZEOF(gre_tunnel_key_common_t, sizeof(u64))
#define foreach_gre_tunnel_mode
typedef CLIB_PACKED(struct { ip4_header_t ip4;gre_header_t gre;}) ip4_and_gre_header_t
IPv4 and GRE header.
gre_tunnel_type_t_
The GRE tunnel type.
struct _vnet_device_class vnet_device_class_t
u32 * tunnel_index_by_sw_if_index
Mapping from sw_if_index to tunnel index.
static void gre_mk_key4(ip4_address_t src, ip4_address_t dst, u32 fib_index, gre_tunnel_type_t ttype, gre_tunnel_mode_t tmode, u16 session_id, gre_tunnel_key4_t *key)
vnet_hw_interface_class_t mgre_hw_interface_class
Hash key for GRE header seq number generation for ERSPAN encap.
vl_api_ip_proto_t protocol
void gre_tunnel_stack(adj_index_t ai)
gre_tunnel_stack
gre_tunnel_type_t tunnel_type
GRE tunnel type.
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
Aggregate type for a prefix.
adj_index_t l2_adj_index
an L2 tunnel always rquires an L2 midchain.
unformat_function_t unformat_gre_header
ip46_address_t tunnel_src
The tunnel's source/local address.
uword * tunnel_by_key4
Hash mapping to tunnels with ipv4 src/dst addr.
A representation of a GRE tunnel.
ip46_address_t fp_addr
The address type is not deriveable from the fp_addr member.
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...
ip6_address_t gtk_src
Source and destination IP addresses.
unformat_function_t unformat_gre_protocol_net_byte_order
static void gre_mk_key6(const ip6_address_t *src, const ip6_address_t *dst, u32 fib_index, gre_tunnel_type_t ttype, gre_tunnel_mode_t tmode, u16 session_id, gre_tunnel_key6_t *key)
static int gre_match_key4(const gre_tunnel_key4_t *key1, const gre_tunnel_key4_t *key2)
u32 node_index
Node which handles this type.
void gre_register_input_protocol(vlib_main_t *vm, gre_protocol_t protocol, u32 node_index, gre_tunnel_type_t tunnel_type)
static int gre_match_key6(const gre_tunnel_key6_t *key1, const gre_tunnel_key6_t *key2)
Key for a IPv4 GRE Tunnel.
union gre_tunnel_key_t_ gre_tunnel_key_t
Union of the two possible key types.
gre_sn_t * gre_sn
GRE header sequence number (SN) used for ERSPAN type 2 header, must be bumped automically to be threa...
format_function_t format_gre_protocol
Used for GRE header seq number generation for ERSPAN encap.
u32 adj_index_t
An index for adjacencies.
u32 next_index
Next index for this type.
Elements of the GRE key that are common for v6 and v6 addresses.
void gre_update_adj(vnet_main_t *vnm, u32 sw_if_index, adj_index_t ai)
gre_tunnel_t * tunnels
pool of tunnel instances
static uword ip6_address_is_equal(const ip6_address_t *a, const ip6_address_t *b)
next_info_t * next_by_protocol
Union of the two possible key types.
vnet_hw_interface_class_t gre_hw_interface_class
struct _vlib_node_registration vlib_node_registration_t
enum gre_tunnel_mode_t_ gre_tunnel_mode_t
vnet_device_class_t gre_device_class
clib_error_t * gre_interface_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
struct _vnet_hw_interface_class vnet_hw_interface_class_t
u8 * format_gre_tunnel_type(u8 *s, va_list *args)
u8 * format_gre_tunnel_mode(u8 *s, va_list *args)
#define foreach_gre_tunnel_type
L3: GRE (i.e.
unformat_function_t unformat_pg_gre_header
gre_tunnel_key_common_t gtk_common
address independent attributes
vlib_node_registration_t gre6_input_node
(constructor) VLIB_REGISTER_NODE (gre6_input_node)
unformat_function_t unformat_gre_protocol_host_byte_order
enum gre_tunnel_type_t_ gre_tunnel_type_t
The GRE tunnel type.
fib_prefix_t tunnel_dst
The tunnel's destination/remote address.
static gre_protocol_info_t * gre_get_protocol_info(gre_main_t *em, gre_protocol_t protocol)
gre_protocol_info_t * protocol_infos
GRE payload protocol registrations.
format_function_t format_gre_header
u16 session_id
ERSPAN type 2 session ID, least significant 10 bits of u16.
static void gre_mk_sn_key(const gre_tunnel_t *gt, gre_sn_key_t *key)
gre_tunnel_key_common_t gtk_common
address independent attributes
struct gre_tunnel_key4_t_ gre_tunnel_key4_t
Key for a IPv4 GRE Tunnel.