* See the License for the specific language governing permissions and
* limitations under the License.
*/
+/**
+ * @file
+ * @brief LISP-GPE definitions.
+ */
#ifndef included_vnet_lisp_gpe_h
#define included_vnet_lisp_gpe_h
#include <vnet/ip/udp.h>
#include <vnet/lisp-cp/lisp_types.h>
#include <vnet/lisp-gpe/lisp_gpe_packet.h>
+#include <vnet/adj/adj_types.h>
-/* encap headers */
+/** IP4-UDP-LISP encap header */
+/* *INDENT-OFF* */
typedef CLIB_PACKED (struct {
ip4_header_t ip4; /* 20 bytes */
udp_header_t udp; /* 8 bytes */
lisp_gpe_header_t lisp; /* 8 bytes */
}) ip4_udp_lisp_gpe_header_t;
+/* *INDENT-ON* */
+/** IP6-UDP-LISP encap header */
+/* *INDENT-OFF* */
typedef CLIB_PACKED (struct {
ip6_header_t ip6; /* 40 bytes */
udp_header_t udp; /* 8 bytes */
lisp_gpe_header_t lisp; /* 8 bytes */
}) ip6_udp_lisp_gpe_header_t;
+/* *INDENT-ON* */
+/** LISP-GPE tunnel structure */
typedef struct
{
- union
- {
- struct
- {
- /* within the dp only ip and mac can be eids */
- union
- {
- ip_prefix_t rmt_ippref;
- u8 rmt_mac[6];
- };
- ip_address_t rmt_loc;
- u32 vni;
- };
- u8 as_u8[40];
- };
-} lisp_gpe_tunnel_key_t;
+ /** tunnel src and dst addresses */
+ locator_pair_t *locator_pairs;
-typedef struct
-{
- /* Rewrite string. $$$$ embed vnet_rewrite header */
- u8 * rewrite;
+ /** locator-pairs with best priority become sub-tunnels */
+ u32 *sub_tunnels;
- /* decap next index */
+ /** decap next index */
u32 decap_next_index;
- /* tunnel src and dst addresses */
- ip_address_t src;
- ip_address_t dst;
+ /* TODO remove */
+ ip_address_t src, dst;
+
+ /** FIB indices */
+ u32 encap_fib_index; /* tunnel partner lookup here */
+ u32 decap_fib_index; /* inner IP lookup here */
- /* FIB indices */
- u32 encap_fib_index; /* tunnel partner lookup here */
- u32 decap_fib_index; /* inner IP lookup here */
+ /** index of the source address lookup FIB */
+ u32 src_fib_index;
- /* vnet intfc hw/sw_if_index */
+ /** vnet intfc hw/sw_if_index */
u32 hw_if_index;
u32 sw_if_index;
- /* action for 'negative' tunnels */
+ /** L2 path-list */
+ fib_node_index_t l2_path_list;
+
+ /** action for 'negative' tunnels */
u8 action;
- /* LISP header fields in HOST byte order */
+ /** LISP header fields in HOST byte order */
u8 flags;
u8 ver_res;
u8 res;
u32 vni;
} lisp_gpe_tunnel_t;
+/**
+ * @brief A path on which to forward lisp traffic
+ */
+typedef struct lisp_fwd_path_t_
+{
+ /**
+ * The adjacency constructed for the locator pair
+ */
+ index_t lisp_adj;
+
+ /**
+ * Priority. Only the paths with the best priority will be installed in FIB
+ */
+ u8 priority;
+
+ /**
+ * [UE]CMP weigt for the path
+ */
+ u8 weight;
+
+} lisp_fwd_path_t;
+
+/**
+ * @brief A Forwarding entry can be 'normal' or 'negative'
+ * Negative implies we deliberately want to add a FIB entry for an EID
+ * that results in 'spcial' behaviour determined by an 'action'.
+ * @normal' means send it down some tunnels.
+ */
+typedef enum lisp_fwd_entry_type_t_
+{
+ LISP_FWD_ENTRY_TYPE_NORMAL,
+ LISP_FWD_ENTRY_TYPE_NEGATIVE,
+} lisp_fwd_entry_type_t;
+
+typedef enum
+{
+ NO_ACTION,
+ FORWARD_NATIVE,
+ SEND_MAP_REQUEST,
+ DROP
+} negative_fwd_actions_e;
+
+/**
+ * LISP-GPE fwd entry key
+ */
+typedef struct lisp_gpe_fwd_entry_key_t_
+{
+ dp_address_t rmt;
+ dp_address_t lcl;
+ u32 vni;
+} lisp_gpe_fwd_entry_key_t;
+
+/**
+ * @brief A LISP Forwarding Entry
+ *
+ * A forwarding entry is from a locai EID to a remote EID over a set of rloc pairs
+ */
+typedef struct lisp_fwd_entry_t_
+{
+ /**
+ * The Entry's key: {lEID,r-EID,vni}
+ */
+ lisp_gpe_fwd_entry_key_t *key;
+
+ /**
+ * The VRF (in the case of L3) or Bridge-Domain (for L2) index
+ */
+ union
+ {
+ u32 eid_table_id;
+ u32 eid_bd_index;
+ };
+
+ /**
+ * The forwarding entry type
+ */
+ lisp_fwd_entry_type_t type;
+
+ union
+ {
+ /**
+ * @brief When the type is 'normal'
+ * The RLOC pair that form the route's paths. i.e. where to send
+ * packets for this route.
+ */
+ lisp_fwd_path_t *paths;
+
+ /**
+ * @brief When the type is negative. The action to take.
+ */
+ negative_fwd_actions_e action;
+ };
+
+ /**
+ * The FIB index for the overlay, i.e. the FIB in which the EIDs
+ * are present
+ */
+ u32 eid_fib_index;
+
+ /**
+ * The SRC-FIB index for created for anding source-route entries
+ */
+ u32 src_fib_index;
+} lisp_fwd_entry_t;
+
+
#define foreach_lisp_gpe_ip_input_next \
_(DROP, "error-drop") \
_(IP4_INPUT, "ip4-input") \
_(IP6_INPUT, "ip6-input") \
_(L2_INPUT, "l2-input")
-typedef enum {
+/** Enum of possible next nodes post LISP-GPE decap */
+typedef enum
+{
#define _(s,n) LISP_GPE_INPUT_NEXT_##s,
foreach_lisp_gpe_ip_input_next
#undef _
- LISP_GPE_INPUT_N_NEXT,
+ LISP_GPE_INPUT_N_NEXT,
} lisp_gpe_input_next_t;
-typedef enum {
+typedef enum
+{
#define lisp_gpe_error(n,s) LISP_GPE_ERROR_##n,
#include <vnet/lisp-gpe/lisp_gpe_error.def>
#undef lisp_gpe_error
LISP_GPE_N_ERROR,
} lisp_gpe_error_t;
-/* As a first step, reuse v4 fib. The goal of the typedef is to shield
- * consumers from future updates that may result in the lisp ip4 fib diverging
- * from ip4 fib */
-typedef ip4_fib_t ip4_src_fib_t;
-
-typedef struct ip6_src_fib
-{
- BVT(clib_bihash) ip6_lookup_table;
-
- /* bitmap/vector of mask widths to search */
- uword * non_empty_dst_address_length_bitmap;
- u8 * prefix_lengths_in_search_order;
- ip6_address_t fib_masks[129];
- i32 dst_address_length_refcounts[129];
-
- /* ip6 lookup table config parameters */
- u32 lookup_table_nbuckets;
- uword lookup_table_size;
-} ip6_src_fib_t;
-
typedef struct tunnel_lookup
{
- /* Lookup lisp-gpe interfaces by dp table (eg. vrf/bridge index) */
- uword * hw_if_index_by_dp_table;
+ /** Lookup lisp-gpe interfaces by dp table (eg. vrf/bridge index) */
+ uword *hw_if_index_by_dp_table;
+
+ /** lookup decap tunnel termination sw_if_index by vni and vice versa */
+ uword *sw_if_index_by_vni;
- /* lookup decap tunnel termination sw_if_index by vni and vice versa */
- uword * sw_if_index_by_vni;
- uword * vni_by_sw_if_index;
+ // FIXME - Need this?
+ uword *vni_by_sw_if_index;
} tunnel_lookup_t;
+/** LISP-GPE global state*/
typedef struct lisp_gpe_main
{
- /* pool of encap tunnel instances */
- lisp_gpe_tunnel_t * tunnels;
+ /** pool of encap tunnel instances */
+ lisp_gpe_tunnel_t *tunnels;
- /* lookup tunnel by key */
- mhash_t lisp_gpe_tunnel_by_key;
-
- /* Free vlib hw_if_indices */
- u32 * free_tunnel_hw_if_indices;
+ /** Free vlib hw_if_indices */
+ u32 *free_tunnel_hw_if_indices;
u8 is_en;
/* L3 data structures
* ================== */
-
- /* Pool of src fibs that are paired with dst fibs */
- ip4_src_fib_t * ip4_src_fibs;
- ip6_src_fib_t * ip6_src_fibs;
-
tunnel_lookup_t l3_ifaces;
- /* Lookup lgpe_ipX_lookup_next by vrf */
- uword * lgpe_ip4_lookup_next_index_by_table_id;
- uword * lgpe_ip6_lookup_next_index_by_table_id;
-
- /* next node indexes that point ip4/6 lookup to lisp gpe ip lookup */
- u32 ip4_lookup_next_lgpe_ip4_lookup;
- u32 ip6_lookup_next_lgpe_ip6_lookup;
-
/* L2 data structures
* ================== */
- /* l2 lisp fib */
- BVT(clib_bihash) l2_fib;
+ /** L2 LISP FIB */
+ BVT (clib_bihash) l2_fib;
tunnel_lookup_t l2_ifaces;
- /* convenience */
- vlib_main_t * vlib_main;
- vnet_main_t * vnet_main;
- ip4_main_t * im4;
- ip6_main_t * im6;
- ip_lookup_main_t * lm4;
- ip_lookup_main_t * lm6;
+ /** Load-balance for a miss in the table */
+ index_t l2_lb_miss;
+ index_t l2_lb_cp_lkup;
+
+ /** convenience */
+ vlib_main_t *vlib_main;
+ vnet_main_t *vnet_main;
+ ip4_main_t *im4;
+ ip6_main_t *im6;
+ ip_lookup_main_t *lm4;
+ ip_lookup_main_t *lm6;
} lisp_gpe_main_t;
+/** LISP-GPE global state*/
lisp_gpe_main_t lisp_gpe_main;
always_inline lisp_gpe_main_t *
-vnet_lisp_gpe_get_main() {
+vnet_lisp_gpe_get_main ()
+{
return &lisp_gpe_main;
}
-extern vlib_node_registration_t lgpe_ip4_lookup_node;
-extern vlib_node_registration_t lgpe_ip6_lookup_node;
+
extern vlib_node_registration_t lisp_gpe_ip4_input_node;
extern vlib_node_registration_t lisp_gpe_ip6_input_node;
+extern vnet_hw_interface_class_t lisp_gpe_hw_class;
-u8 *
-format_lisp_gpe_header_with_length (u8 * s, va_list * args);
+u8 *format_lisp_gpe_header_with_length (u8 * s, va_list * args);
+/** Arguments to add an L2/L3 LISP-GPE interface*/
typedef struct
{
u8 is_add;
union
{
- /* vrf */
+ /** vrf */
u32 table_id;
- /* bridge domain */
+ /** bridge domain */
u16 bd_id;
- /* generic access */
+ /** generic access */
u32 dp_table;
};
u8 is_l2;
- u32 vni; /* host byte order */
+
+ /** virtual network identifier in host byte order */
+ u32 vni;
} vnet_lisp_gpe_add_del_iface_args_t;
-u8
-vnet_lisp_gpe_enable_disable_status(void);
+/** Read LISP-GPE status */
+u8 vnet_lisp_gpe_enable_disable_status (void);
+
+/** Add/del LISP-GPE interface. */
int
-vnet_lisp_gpe_add_del_iface (vnet_lisp_gpe_add_del_iface_args_t *a,
+vnet_lisp_gpe_add_del_iface (vnet_lisp_gpe_add_del_iface_args_t * a,
u32 * hw_if_indexp);
typedef struct
u8 is_en;
} vnet_lisp_gpe_enable_disable_args_t;
-clib_error_t *
-vnet_lisp_gpe_enable_disable (vnet_lisp_gpe_enable_disable_args_t *a);
+clib_error_t
+ * vnet_lisp_gpe_enable_disable (vnet_lisp_gpe_enable_disable_args_t * a);
+/** */
typedef struct
{
u8 is_add;
- /* type of mapping */
+ /** type of mapping */
u8 is_negative;
- u8 action;
- /* local and remote eids */
+ /** action for negative mappings */
+ negative_fwd_actions_e action;
+
+ /** local eid */
gid_address_t lcl_eid;
+
+ /** remote eid */
gid_address_t rmt_eid;
- /* local and remote locators (underlay attachment points) */
- ip_address_t lcl_loc;
- ip_address_t rmt_loc;
+ /** vector of locator pairs */
+ locator_pair_t *locator_pairs;
- /* FIB indices to lookup remote locator at encap and inner IP at decap */
+ /** FIB index to lookup remote locator at encap */
u32 encap_fib_index;
+
+ /** FIB index to lookup inner IP at decap */
u32 decap_fib_index;
- u32 decap_next_index; /* TODO is this really needed? */
+ /* TODO remove */
+ u32 decap_next_index;
- /* VNI/tenant id in HOST byte order */
+ /** VNI/tenant id in HOST byte order */
u32 vni;
- /* vrf or bd where fwd entry should be inserted */
+ /** vrf or bd where fwd entry should be inserted */
union
{
+ /** table (vrf) id */
u32 table_id;
+
+ /** bridge domain id */
u16 bd_id;
+
+ /** generic access */
+ u32 dp_table;
};
} vnet_lisp_gpe_add_del_fwd_entry_args_t;
int
-vnet_lisp_gpe_add_del_fwd_entry (vnet_lisp_gpe_add_del_fwd_entry_args_t *a,
+vnet_lisp_gpe_add_del_fwd_entry (vnet_lisp_gpe_add_del_fwd_entry_args_t * a,
u32 * hw_if_indexp);
-int
-ip_sd_fib_add_del_route (lisp_gpe_main_t * lgm, ip_prefix_t * dst_prefix,
- ip_prefix_t * src_prefix, u32 table_id,
- ip_adjacency_t * add_adj, u8 is_add);
-u32
-ip_sd_fib_get_route (lisp_gpe_main_t * lgm, ip_prefix_t * dst_prefix,
- ip_prefix_t * src_prefix, u32 table_id);
+extern void
+ip_src_fib_add_route (u32 src_fib_index,
+ const ip_prefix_t * src_prefix,
+ const lisp_fwd_path_t * paths);
+extern void
+ip_src_dst_fib_del_route (u32 src_fib_index,
+ const ip_prefix_t * src_prefix,
+ u32 dst_table_id, const ip_prefix_t * dst_prefix);
+extern void
+ip_src_fib_add_route_w_dpo (u32 src_fib_index,
+ const ip_prefix_t * src_prefix,
+ const dpo_id_t * src_dpo);
+extern u32
+ip_dst_fib_add_route (u32 dst_table_id, const ip_prefix_t * dst_prefix);
+
+extern fib_route_path_t *lisp_gpe_mk_paths_for_sub_tunnels (lisp_gpe_tunnel_t
+ * t);
#define foreach_lgpe_ip4_lookup_next \
_(DROP, "error-drop") \
#define _(sym,str) LGPE_IP4_LOOKUP_NEXT_##sym,
foreach_lgpe_ip4_lookup_next
#undef _
- LGPE_IP4_LOOKUP_N_NEXT,
+ LGPE_IP4_LOOKUP_N_NEXT,
} lgpe_ip4_lookup_next_t;
-#define foreach_lgpe_ip6_lookup_next \
+#define foreach_lgpe_ip6_lookup_next \
_(DROP, "error-drop") \
_(LISP_CP_LOOKUP, "lisp-cp-lookup")
#define _(sym,str) LGPE_IP6_LOOKUP_NEXT_##sym,
foreach_lgpe_ip6_lookup_next
#undef _
- LGPE_IP6_LOOKUP_N_NEXT,
+ LGPE_IP6_LOOKUP_N_NEXT,
} lgpe_ip6_lookup_next_t;
-u8 * format_vnet_lisp_gpe_status (u8 * s, va_list * args);
+u8 *format_vnet_lisp_gpe_status (u8 * s, va_list * args);
#define L2_FIB_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
#define L2_FIB_DEFAULT_HASH_MEMORY_SIZE (32<<20)
u32
lisp_l2_fib_lookup (lisp_gpe_main_t * lgm, u16 bd_index, u8 src_mac[8],
- u8 dst_mac[8]);
+ u8 dst_mac[8]);
#endif /* included_vnet_lisp_gpe_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff