LISP GPE: initial CP commit and DP improvements

[vpp.git] / vnet / vnet / lisp-gpe / lisp_gpe.h

diff --git a/vnet/vnet/lisp-gpe/lisp_gpe.h b/vnet/vnet/lisp-gpe/lisp_gpe.h
index 12c4ebc..7e86d57 100644 (file)
--- a/vnet/vnet/lisp-gpe/lisp_gpe.h
+++ b/vnet/vnet/lisp-gpe/lisp_gpe.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Copyright (c) 2016 Cisco and/or its affiliates.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
@@ -12,18 +12,22 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 #ifndef included_vnet_lisp_gpe_h
 #define included_vnet_lisp_gpe_h
 
 #include <vppinfra/error.h>
-#include <vppinfra/hash.h>
+#include <vppinfra/mhash.h>
 #include <vnet/vnet.h>
 #include <vnet/ip/ip.h>
 #include <vnet/l2/l2_input.h>
 #include <vnet/ethernet/ethernet.h>
-#include <vnet/lisp-gpe/lisp_gpe_packet.h>
 #include <vnet/ip/ip4_packet.h>
 #include <vnet/ip/udp.h>
+#include <vnet/lisp-cp/lisp_types.h>
+#include <vnet/lisp-gpe/lisp_gpe_packet.h>
+
+#define IP_UDP_HDR_LEN (word) (sizeof(udp_header_t) + sizeof(ip4_header_t))
 
 typedef CLIB_PACKED (struct {
   ip4_header_t ip4;             /* 20 bytes */
@@ -31,21 +35,22 @@ typedef CLIB_PACKED (struct {
   lisp_gpe_header_t lisp;       /* 8 bytes */
 }) ip4_udp_lisp_gpe_header_t;
 
-typedef CLIB_PACKED(struct {
-  /* 
-   * Key fields: ip src, LISP iid, ??? $$$$$$$$$ correct answer ???
-   * all fields in NET byte order
-   */
-  union {
-    struct {
-      u32 src;
-      u32 iid;
-    };
-    u64 as_u64[1];
+typedef struct
+{
+  union
+  {
+    struct
+      {
+       gid_address_t eid;
+       u32 dst_loc;
+       u32 iid;
+      };
+    u8 as_u8[6];
   };
-}) lisp_gpe_tunnel_key_t;
+} lisp_gpe_tunnel_key_t;
 
-typedef struct {
+typedef struct
+{
   /* Rewrite string. $$$$ embed vnet_rewrite header */
   u8 * rewrite;
 
@@ -93,30 +98,53 @@ typedef enum {
   LISP_GPE_N_ERROR,
 } lisp_gpe_input_error_t;
 
-typedef struct {
+/* 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 lisp_ip4_fib_t;
+
+typedef struct lisp_gpe_main
+{
+  /* Pool of src fibs that are paired with dst fibs */
+  ip4_fib_t * src_fibs;
+
   /* vector of encap tunnel instances */
-  lisp_gpe_tunnel_t *tunnels;
+  lisp_gpe_tunnel_t * tunnels;
 
   /* lookup tunnel by key */
-  uword * lisp_gpe_tunnel_by_key;
+  mhash_t lisp_gpe_tunnel_by_key;
+
+  /* lookup tunnel by adjacency index */
+  uword * lisp_gpe_tunnel_by_adj_index;
 
   /* Free vlib hw_if_indices */
   u32 * free_lisp_gpe_tunnel_hw_if_indices;
 
+  u32 lisp_gpe_hw_if_index;
+
+  /* next node indexes that points ip4 lookup to lisp gpe lookup and lisp cp */
+  u32 ip4_lookup_next_lgpe_ip4_lookup;
+
   /* convenience */
   vlib_main_t * vlib_main;
   vnet_main_t * vnet_main;
+  ip_lookup_main_t * lookup_main;
+  ip4_main_t * im4;
 } lisp_gpe_main_t;
 
 lisp_gpe_main_t lisp_gpe_main;
 
+extern vlib_node_registration_t lgpe_ip4_lookup_node;
 extern vlib_node_registration_t lisp_gpe_input_node;
 extern vlib_node_registration_t lisp_gpe_encap_node;
 
-u8 * format_lisp_gpe_encap_trace (u8 * s, va_list * args);
-u8 * format_lisp_gpe_header_with_length (u8 * s, va_list * args);
+u8 *
+format_lisp_gpe_encap_trace (u8 * s, va_list * args);
+u8 *
+format_lisp_gpe_header_with_length (u8 * s, va_list * args);
 
-typedef struct {
+typedef struct
+{
   u8 is_add;
   ip4_address_t src, dst;
   u32 encap_fib_index;
@@ -126,12 +154,54 @@ typedef struct {
   u8 ver_res;
   u8 res;
   u8 next_protocol;
-  u32 iid;                      /* host byte order */
+  u32 iid; /* host byte order */
 } vnet_lisp_gpe_add_del_tunnel_args_t;
 
-int vnet_lisp_gpe_add_del_tunnel 
-(vnet_lisp_gpe_add_del_tunnel_args_t *a, u32 * sw_if_indexp);
+int
+vnet_lisp_gpe_add_del_tunnel (vnet_lisp_gpe_add_del_tunnel_args_t *a,
+                             u32 * sw_if_indexp);
+
+typedef struct
+{
+  u8 is_add;
+} vnet_lisp_gpe_add_del_iface_args_t;
+
+void
+vnet_lisp_gpe_add_del_iface (vnet_lisp_gpe_add_del_iface_args_t *a,
+                            u32 * hw_if_indexp);
+
+typedef enum
+{
+  NO_ACTION,
+  FORWARD_NATIVE,
+  SEND_MAP_REQUEST,
+  DROP
+} negative_fwd_actions_e;
+
+typedef struct
+{
+  u8 is_add;
+  u8 is_negative;
+  negative_fwd_actions_e action;
+  gid_address_t seid; /* TODO convert to ip4, ip6, mac ? */
+  gid_address_t deid;
+  ip_address_t slocator;
+  ip_address_t dlocator;
+  u32 encap_fib_index;
+  u32 decap_fib_index;
+  u32 decap_next_index;
+  u8 flags;
+  u8 ver_res;
+  u8 res;
+  u8 next_protocol;
+  u32 iid; /* host byte order */
+} 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,
+                                u32 * hw_if_indexp);
 
-u8 * format_lisp_gpe_header_with_length (u8 * s, va_list * args);
+u8 *
+format_lisp_gpe_header_with_length (u8 * s, va_list * args);
 
 #endif /* included_vnet_lisp_gpe_h */