#include <vnet/vnet.h>
#include <vnet/gre/packet.h>
#include <vnet/ip/ip.h>
-#include <vnet/ip/ip4.h>
-#include <vnet/ip/ip4_packet.h>
#include <vnet/pg/pg.h>
#include <vnet/ip/format.h>
#include <vnet/adj/adj_types.h>
extern vnet_hw_interface_class_t gre_hw_interface_class;
-typedef enum {
+typedef enum
+{
#define gre_error(n,s) GRE_ERROR_##n,
#include <vnet/gre/error.def>
#undef gre_error
/**
* A GRE payload protocol registration
*/
-typedef struct {
+typedef struct
+{
/** Name (a c string). */
- char * name;
+ char *name;
/** GRE protocol type in host byte order. */
gre_protocol_t protocol;
#define GRE_TUNNEL_N_TYPES ((gre_tunnel_type_t)GRE_TUNNEL_TYPE_TEB+1)
+/**
+ * @brief Key for a IPv4 GRE Tunnel
+ */
+typedef struct gre_tunnel_key4_t_
+{
+ /**
+ * Source and destination IP addresses
+ */
+ union
+ {
+ struct
+ {
+ ip4_address_t gtk_src;
+ ip4_address_t gtk_dst;
+ };
+ u64 gtk_as_u64;
+ };
+
+ /**
+ * The FIB table the src,dst addresses are in.
+ * tunnels with the same IP addresses in different FIBs are not
+ * the same tunnel
+ */
+ u32 gtk_fib_index;
+} __attribute__ ((packed)) gre_tunnel_key4_t;
+
+/**
+ * @brief Key for a IPv6 GRE Tunnel
+ * We use a different type so that the V4 key hash is as small as possible
+ */
+typedef struct gre_tunnel_key6_t_
+{
+ /**
+ * Source and destination IP addresses
+ */
+ ip6_address_t gtk_src;
+ ip6_address_t gtk_dst;
+
+ /**
+ * The FIB table the src,dst addresses are in.
+ * tunnels with the same IP addresses in different FIBs are not
+ * the same tunnel
+ */
+ u32 gtk_fib_index;
+} __attribute__ ((packed)) gre_tunnel_key6_t;
+
+/**
+ * Union of the two possible key types
+ */
+typedef union gre_tunnel_key_t_
+{
+ gre_tunnel_key4_t gtk_v4;
+ gre_tunnel_key6_t gtk_v6;
+} gre_tunnel_key_t;
+
/**
* @brief A representation of a GRE tunnel
*/
-typedef struct {
+typedef struct
+{
/**
* Linkage into the FIB object graph
*/
fib_node_t node;
+ /**
+ * The hash table's key stored in separate memory since the tunnel_t
+ * memory can realloc.
+ */
+ gre_tunnel_key_t *key;
+
/**
* The tunnel's source/local address
*/
- ip4_address_t tunnel_src;
+ ip46_address_t tunnel_src;
/**
* The tunnel's destination/remote address
*/
- ip4_address_t tunnel_dst;
+ fib_prefix_t tunnel_dst;
/**
* The FIB in which the src.dst address are present
*/
/**
* @brief GRE related global data
*/
-typedef struct {
+typedef struct
+{
/**
* pool of tunnel instances
*/
/**
* GRE payload protocol registrations
*/
- gre_protocol_info_t * protocol_infos;
+ gre_protocol_info_t *protocol_infos;
/**
* Hash tables mapping name/protocol to protocol info index.
*/
- uword * protocol_info_by_name, * protocol_info_by_protocol;
+ uword *protocol_info_by_name, *protocol_info_by_protocol;
+
/**
- * Hash mapping src/dst addr pair to tunnel
+ * Hash mapping ipv4 src/dst addr pair to tunnel
*/
- uword * tunnel_by_key;
+ uword *tunnel_by_key4;
+
+ /**
+ * Hash mapping ipv6 src/dst addr pair to tunnel
+ */
+ uword *tunnel_by_key6;
/**
* Free vlib hw_if_indices.
* A free list per-tunnel type since the interfaces ctreated are fo different
* types and we cannot change the type.
*/
- u32 * free_gre_tunnel_hw_if_indices[GRE_TUNNEL_N_TYPES];
+ u32 *free_gre_tunnel_hw_if_indices[GRE_TUNNEL_N_TYPES];
/**
* Mapping from sw_if_index to tunnel index
*/
- u32 * tunnel_index_by_sw_if_index;
+ u32 *tunnel_index_by_sw_if_index;
+
+ /* Sparse vector mapping gre protocol in network byte order
+ to next index. */
+ u16 *next_by_protocol;
/* convenience */
- vlib_main_t * vlib_main;
- vnet_main_t * vnet_main;
+ vlib_main_t *vlib_main;
+ vnet_main_t *vnet_main;
} gre_main_t;
/**
* @brief IPv4 and GRE header.
*/
+/* *INDENT-OFF* */
typedef CLIB_PACKED (struct {
ip4_header_t ip4;
gre_header_t gre;
}) ip4_and_gre_header_t;
+/* *INDENT-ON* */
+
+/**
+ * @brief IPv6 and GRE header.
+ */
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+ ip6_header_t ip6;
+ gre_header_t gre;
+}) ip6_and_gre_header_t;
+/* *INDENT-ON* */
always_inline gre_protocol_info_t *
gre_get_protocol_info (gre_main_t * em, gre_protocol_t protocol)
{
- uword * p = hash_get (em->protocol_info_by_protocol, protocol);
+ uword *p = hash_get (em->protocol_info_by_protocol, protocol);
return p ? vec_elt_at_index (em->protocol_infos, p[0]) : 0;
}
-gre_main_t gre_main;
+extern gre_main_t gre_main;
/* Register given node index to take input for given gre type. */
void
gre_register_input_type (vlib_main_t * vm,
- gre_protocol_t protocol,
- u32 node_index);
+ gre_protocol_t protocol, u32 node_index);
-extern clib_error_t * gre_interface_admin_up_down (vnet_main_t * vnm,
- u32 hw_if_index,
- u32 flags);
+extern clib_error_t *gre_interface_admin_up_down (vnet_main_t * vnm,
+ u32 hw_if_index, u32 flags);
extern void gre_tunnel_stack (adj_index_t ai);
extern void gre_update_adj (vnet_main_t * vnm,
- u32 sw_if_index,
- adj_index_t ai);
+ u32 sw_if_index, adj_index_t ai);
format_function_t format_gre_protocol;
format_function_t format_gre_header;
format_function_t format_gre_header_with_length;
-extern vlib_node_registration_t gre_input_node;
+extern vlib_node_registration_t gre4_input_node;
+extern vlib_node_registration_t gre6_input_node;
extern vnet_device_class_t gre_device_class;
extern vnet_device_class_t gre_device_teb_class;
void
gre_register_input_protocol (vlib_main_t * vm,
- gre_protocol_t protocol,
- u32 node_index);
+ gre_protocol_t protocol, u32 node_index);
/* manually added to the interface output node in gre.c */
#define GRE_OUTPUT_NEXT_LOOKUP 1
-typedef struct {
+typedef struct
+{
u8 is_add;
- ip4_address_t src, dst;
+ ip46_address_t src, dst;
+ u8 is_ipv6;
u32 outer_fib_id;
u8 teb;
} vnet_gre_add_del_tunnel_args_t;
int vnet_gre_add_del_tunnel
- (vnet_gre_add_del_tunnel_args_t *a, u32 * sw_if_indexp);
+ (vnet_gre_add_del_tunnel_args_t * a, u32 * sw_if_indexp);
+
+static inline void
+gre_mk_key4 (const ip4_address_t * src,
+ const ip4_address_t * dst,
+ u32 fib_index, gre_tunnel_key4_t * key)
+{
+ key->gtk_src = *src;
+ key->gtk_dst = *dst;
+ key->gtk_fib_index = fib_index;
+}
+
+static inline int
+gre_match_key4 (const gre_tunnel_key4_t * key1,
+ const gre_tunnel_key4_t * key2)
+{
+ return ((key1->gtk_as_u64 == key2->gtk_as_u64) &&
+ (key1->gtk_fib_index == key2->gtk_fib_index));
+}
+
+static inline void
+gre_mk_key6 (const ip6_address_t * src,
+ const ip6_address_t * dst,
+ u32 fib_index, gre_tunnel_key6_t * key)
+{
+ key->gtk_src = *src;
+ key->gtk_dst = *dst;
+ key->gtk_fib_index = fib_index;
+}
+
+static inline int
+gre_match_key6 (const gre_tunnel_key6_t * key1,
+ const gre_tunnel_key6_t * key2)
+{
+ return ((key1->gtk_src.as_u64[0] == key2->gtk_src.as_u64[0]) &&
+ (key1->gtk_src.as_u64[1] == key2->gtk_src.as_u64[1]) &&
+ (key1->gtk_dst.as_u64[0] == key2->gtk_dst.as_u64[0]) &&
+ (key1->gtk_dst.as_u64[1] == key2->gtk_dst.as_u64[1]) &&
+ (key1->gtk_fib_index == key2->gtk_fib_index));
+}
#endif /* included_gre_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff