#include <vnet/pg/pg.h>
#include <vnet/ip/format.h>
#include <vnet/adj/adj_types.h>
+#include <vnet/tunnel/tunnel.h>
+#include <vnet/nhrp/nhrp.h>
extern vnet_hw_interface_class_t gre_hw_interface_class;
+extern vnet_hw_interface_class_t mgre_hw_interface_class;
typedef enum
{
GRE_N_ERROR,
} gre_error_t;
+/**
+ * L3: GRE (i.e. this tunnel is in L3 mode)
+ * TEB: Transparent Ethernet Bridging - the tunnel is in L2 mode
+ * 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
+ */
+#define foreach_gre_tunnel_type \
+ _(L3, "L3") \
+ _(TEB, "TEB") \
+ _(ERSPAN, "ERSPAN") \
+
/**
* @brief The GRE tunnel type
*/
typedef enum gre_tunnel_type_t_
{
- /**
- * L3 GRE (i.e. this tunnel is in L3 mode)
- */
- GRE_TUNNEL_TYPE_L3 = 0,
- /**
- * Transparent Ethernet Bridging - the tunnel is in L2 mode
- */
- GRE_TUNNEL_TYPE_TEB = 1,
- /**
- * 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_ERSPAN = 2,
+#define _(n, s) GRE_TUNNEL_TYPE_##n,
+ foreach_gre_tunnel_type
+#undef _
+} __clib_packed gre_tunnel_type_t;
- GRE_TUNNEL_TYPE_N
-} gre_tunnel_type_t;
+extern u8 *format_gre_tunnel_type (u8 * s, va_list * args);
-#define GRE_TUNNEL_TYPE_NAMES { \
- [GRE_TUNNEL_TYPE_L3] = "L3", \
- [GRE_TUNNEL_TYPE_TEB] = "TEB", \
- [GRE_TUNNEL_TYPE_ERSPAN] = "ERSPAN", \
-}
/**
* A GRE payload protocol registration
u32 next_index;
} gre_protocol_info_t;
+/**
+ * Elements of the GRE key that are common for v6 and v6 addresses
+ */
+typedef struct gre_tunnel_key_common_t_
+{
+ union
+ {
+ struct
+ {
+ u32 fib_index;
+ u16 session_id;
+ gre_tunnel_type_t type;
+ tunnel_mode_t mode;
+ };
+ u64 as_u64;
+ };
+} gre_tunnel_key_common_t;
+
+STATIC_ASSERT_SIZEOF (gre_tunnel_key_common_t, sizeof (u64));
+
/**
* @brief Key for a IPv4 GRE Tunnel
*/
u64 gtk_as_u64;
};
- /**
- * FIB table index, ERSPAN session ID and tunnel type in u32 bit fields:
- * - The FIB table index the src,dst addresses are in, top 20 bits
- * - The Session ID for ERSPAN tunnel type and 0 otherwise, next 10 bits
- * - Tunnel type, bottom 2 bits
- */
- u32 gtk_fidx_ssid_type;
+ /** address independent attributes */
+ gre_tunnel_key_common_t gtk_common;
} __attribute__ ((packed)) gre_tunnel_key4_t;
+STATIC_ASSERT_SIZEOF (gre_tunnel_key4_t, 2 * sizeof (u64));
+
/**
* @brief 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;
ip6_address_t gtk_dst;
- /**
- * FIB table index, ERSPAN session ID and tunnel type in u32 bit fields:
- * - The FIB table index the src,dst addresses are in, top 20 bits
- * - The Session ID for ERSPAN tunnel type and 0 otherwise, next 10 bits
- * - Tunnel type, bottom 2 bits
- */
- u32 gtk_fidx_ssid_type;
+ /** address independent attributes */
+ gre_tunnel_key_common_t gtk_common;
} __attribute__ ((packed)) gre_tunnel_key6_t;
-#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)
+STATIC_ASSERT_SIZEOF (gre_tunnel_key6_t, 5 * sizeof (u64));
/**
* Union of the two possible key types
gre_tunnel_key6_t gtk_v6;
} gre_tunnel_key_t;
+/**
+ * The session ID is only a 10 bit value
+ */
+#define GTK_SESSION_ID_MAX (0x3ff)
+
/**
* Used for GRE header seq number generation for ERSPAN encap
*/
typedef struct
{
/**
- * Linkage into the FIB object graph
+ * Required for pool_get_aligned
*/
- 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;
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
/**
* The tunnel's source/local address
u32 hw_if_index;
u32 sw_if_index;
gre_tunnel_type_t type;
-
- /**
- * The FIB entry sourced by the tunnel for its destination prefix
- */
- fib_node_index_t fib_entry_index;
-
- /**
- * The tunnel is a child of the FIB entry for its desintion. This is
- * so it receives updates when the forwarding information for that entry
- * changes.
- * The tunnels sibling index on the FIB entry's dependency list.
- */
- u32 sibling_index;
+ tunnel_mode_t mode;
+ tunnel_encap_decap_flags_t flags;
/**
* an L2 tunnel always rquires an L2 midchain. cache here for DP.
extern void gre_update_adj (vnet_main_t * vnm,
u32 sw_if_index, adj_index_t ai);
+typedef struct mgre_walk_ctx_t_
+{
+ const gre_tunnel_t *t;
+ const nhrp_entry_t *ne;
+} mgre_walk_ctx_t;
+
+adj_walk_rc_t mgre_mk_complete_walk (adj_index_t ai, void *data);
+adj_walk_rc_t mgre_mk_incomplete_walk (adj_index_t ai, void *data);
+
format_function_t format_gre_protocol;
format_function_t format_gre_header;
format_function_t format_gre_header_with_length;
typedef struct
{
u8 is_add;
- u8 tunnel_type;
+ gre_tunnel_type_t type;
+ tunnel_mode_t mode;
u8 is_ipv6;
u32 instance;
ip46_address_t src, dst;
- u32 outer_fib_id;
+ u32 outer_table_id;
u16 session_id;
-} vnet_gre_add_del_tunnel_args_t;
+ tunnel_encap_decap_flags_t flags;
+} vnet_gre_tunnel_add_del_args_t;
-int vnet_gre_add_del_tunnel
- (vnet_gre_add_del_tunnel_args_t * a, u32 * sw_if_indexp);
+extern int vnet_gre_tunnel_add_del (vnet_gre_tunnel_add_del_args_t * a,
+ u32 * sw_if_indexp);
static inline 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)
+ u32 fib_index,
+ gre_tunnel_type_t ttype,
+ tunnel_mode_t tmode, u16 session_id, gre_tunnel_key4_t * key)
{
key->gtk_src = src;
key->gtk_dst = dst;
- key->gtk_fidx_ssid_type = ttype |
- (fib_index << GTK_FIB_INDEX_SHIFT) | (session_id << GTK_SESSION_ID_SHIFT);
+ key->gtk_common.type = ttype;
+ key->gtk_common.mode = tmode;
+ key->gtk_common.fib_index = fib_index;
+ key->gtk_common.session_id = session_id;
}
static inline int
const gre_tunnel_key4_t * key2)
{
return ((key1->gtk_as_u64 == key2->gtk_as_u64) &&
- (key1->gtk_fidx_ssid_type == key2->gtk_fidx_ssid_type));
+ (key1->gtk_common.as_u64 == key2->gtk_common.as_u64));
}
static inline 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)
+ u32 fib_index,
+ gre_tunnel_type_t ttype,
+ tunnel_mode_t tmode, u16 session_id, gre_tunnel_key6_t * key)
{
key->gtk_src = *src;
key->gtk_dst = *dst;
- key->gtk_fidx_ssid_type = ttype |
- (fib_index << GTK_FIB_INDEX_SHIFT) | (session_id << GTK_SESSION_ID_SHIFT);
+ key->gtk_common.type = ttype;
+ key->gtk_common.mode = tmode;
+ key->gtk_common.fib_index = fib_index;
+ key->gtk_common.session_id = session_id;
}
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_fidx_ssid_type == key2->gtk_fidx_ssid_type));
+ return (ip6_address_is_equal (&key1->gtk_src, &key2->gtk_src) &&
+ ip6_address_is_equal (&key1->gtk_dst, &key2->gtk_dst) &&
+ (key1->gtk_common.as_u64 == key2->gtk_common.as_u64));
}
static inline void
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