A Protocol Independent Hierarchical FIB (VPP-352)
[vpp.git] / vnet / vnet / mpls / mpls.h
similarity index 65%
rename from vnet/vnet/mpls-gre/mpls.h
rename to vnet/vnet/mpls/mpls.h
index d8ffca2..2aeae49 100644 (file)
 
 #include <vnet/vnet.h>
 #include <vnet/gre/gre.h>
-#include <vnet/mpls-gre/packet.h>
+#include <vnet/mpls/packet.h>
+#include <vnet/mpls/mpls_types.h>
 #include <vnet/ip/ip4_packet.h>
 #include <vnet/ethernet/ethernet.h>
+#include <vnet/fib/fib_node.h>
+#include <vnet/adj/adj.h>
 
 typedef CLIB_PACKED (struct {
   ip4_header_t ip4;             /* 20 bytes */
@@ -31,7 +34,7 @@ extern vnet_hw_interface_class_t mpls_gre_hw_interface_class;
 
 typedef enum {
 #define mpls_error(n,s) MPLS_ERROR_##n,
-#include <vnet/mpls-gre/error.def>
+#include <vnet/mpls/error.def>
 #undef mpls_error
   MPLS_N_ERROR,
 } mpls_gre_error_t;
@@ -42,6 +45,7 @@ typedef enum {
  */
 
 typedef struct {
+  fib_node_t mgt_node;
   ip4_address_t tunnel_src;
   ip4_address_t tunnel_dst;
   ip4_address_t intfc_address;
@@ -52,6 +56,9 @@ typedef struct {
   u32 hw_if_index;              /* L2 x-connect capable tunnel intfc */
   u8 * rewrite_data;
   u8 l2_only;
+  fib_node_index_t fei; /* FIB Entry index for the tunnel's destination */
+  adj_index_t adj_index; /* The midchain adj this tunnel creates */
+  u32 sibling_index;
 } mpls_gre_tunnel_t;
 
 typedef struct {
@@ -64,6 +71,7 @@ typedef struct {
   u32 hw_if_index;
   u8 * rewrite_data;
   u8 l2_only;
+  fib_node_index_t fei;
 } mpls_eth_tunnel_t;
 
 typedef struct {
@@ -78,7 +86,53 @@ typedef struct {
   u32 next_index;               /* e.g. ip4/6-input, l2-input */
 } mpls_decap_t;
 
+#define MPLS_FIB_DEFAULT_TABLE_ID 0
+
+/**
+ * Type exposure is to allow the DP fast/inlined access
+ */
+#define MPLS_FIB_KEY_SIZE 21
+#define MPLS_FIB_DB_SIZE (1 << (MPLS_FIB_KEY_SIZE-1))
+
+typedef struct mpls_fib_t_
+{
+  /**
+   * A hash table of entries. 21 bit key
+   * Hash table for reduced memory footprint
+   */
+  uword * mf_entries; 
+
+  /**
+   * The load-balance indeices keyed by 21 bit label+eos bit.
+   * A flat array for maximum lookup performace.
+   */
+  index_t mf_lbs[MPLS_FIB_DB_SIZE];
+} mpls_fib_t;
+
+/**
+ * @brief Definition of a callback for receiving MPLS interface state change
+ * notifications
+ */
+typedef void (*mpls_interface_state_change_callback_t)(u32 sw_if_index,
+                                                       u32 is_enable);
+
 typedef struct {
+  /* MPLS FIB index for each software interface */
+  u32 *fib_index_by_sw_if_index;
+
+  /**  A pool of all the MPLS FIBs */
+  struct fib_table_t_ *fibs;
+
+  /** A hash table to lookup the mpls_fib by table ID */
+  uword *fib_index_by_table_id;
+
+  /* rx/tx interface/feature configuration. */
+  ip_config_main_t rx_config_mains, tx_config_main;
+
+  /* Built-in unicast feature path indices, see ip_feature_init_cast(...)  */
+  u32 mpls_rx_feature_lookup;
+  u32 mpls_rx_feature_not_enabled;
+
   /* pool of gre tunnel instances */
   mpls_gre_tunnel_t *gre_tunnels;
   u32 * free_gre_sw_if_indices;
@@ -99,23 +153,53 @@ typedef struct {
   u32 ip4_classify_mpls_policy_encap_next_index;
   u32 ip6_classify_mpls_policy_encap_next_index;
 
+  /* feature path configuration lists */
+  vnet_ip_feature_registration_t * next_feature;
+
+  /* Save feature results for show command */
+  char **feature_nodes;
+
+  /* IP4 enabled count by software interface */
+  u8 * mpls_enabled_by_sw_if_index;
+
+  /* Functions to call when MPLS state on an interface changes. */
+  mpls_interface_state_change_callback_t * mpls_interface_state_change_callbacks;
+
   /* convenience */
   vlib_main_t * vlib_main;
   vnet_main_t * vnet_main;
 } mpls_main_t;
 
-mpls_main_t mpls_main;
+extern mpls_main_t mpls_main;
+
+#define VNET_MPLS_FEATURE_INIT(x,...)                           \
+  __VA_ARGS__ vnet_ip_feature_registration_t uc_##x;            \
+static void __vnet_add_feature_registration_uc_##x (void)       \
+  __attribute__((__constructor__)) ;                            \
+static void __vnet_add_feature_registration_uc_##x (void)       \
+{                                                               \
+  mpls_main_t * mm = &mpls_main;                                \
+  uc_##x.next = mm->next_feature;                               \
+  mm->next_feature = &uc_##x;                                   \
+}                                                               \
+__VA_ARGS__ vnet_ip_feature_registration_t uc_##x
+
+extern clib_error_t * mpls_feature_init(vlib_main_t * vm);
 
 format_function_t format_mpls_protocol;
-format_function_t format_mpls_header;
-format_function_t format_mpls_header_with_length;
 format_function_t format_mpls_gre_header_with_length;
 format_function_t format_mpls_eth_header_with_length;
-format_function_t format_mpls_unicast_label;
 format_function_t format_mpls_encap_index;
 
+format_function_t format_mpls_eos_bit;
+format_function_t format_mpls_unicast_header_net_byte_order;
+format_function_t format_mpls_unicast_label;
+format_function_t format_mpls_header;
+
 extern vlib_node_registration_t mpls_input_node;
 extern vlib_node_registration_t mpls_policy_encap_node;
+extern vlib_node_registration_t mpls_output_node;
+extern vlib_node_registration_t mpls_midchain_node;
 
 extern vnet_device_class_t mpls_gre_device_class;
 
@@ -126,6 +210,7 @@ unformat_function_t unformat_mpls_protocol_net_byte_order;
 unformat_function_t unformat_mpls_label_net_byte_order;
 unformat_function_t unformat_mpls_gre_header;
 unformat_function_t unformat_pg_mpls_gre_header;
+unformat_function_t unformat_mpls_unicast_label;
 
 /* Parse mpls header. */
 unformat_function_t unformat_mpls_header;
@@ -135,6 +220,12 @@ unformat_function_t unformat_pg_mpls_header;
 #define MPLS_GRE_OUTPUT_NEXT_LOOKUP    1
 #define MPLS_GRE_OUTPUT_NEXT_DROP      VNET_INTERFACE_TX_NEXT_DROP
 
+void mpls_sw_interface_enable_disable (mpls_main_t * mm,
+                                      u32 sw_if_index,
+                                      u8 is_enable);
+
+u8 mpls_sw_interface_is_enabled (u32 sw_if_index);
+
 mpls_encap_t * 
 mpls_encap_by_fib_and_dest (mpls_main_t * mm, u32 rx_fib, u32 dst_address);
 
@@ -176,6 +267,7 @@ int vnet_mpls_add_del_encap (ip4_address_t *dest, u32 fib_id,
 int vnet_mpls_policy_tunnel_add_rewrite (mpls_main_t * mm, 
                                          mpls_encap_t * e, 
                                          u32 policy_tunnel_index);
+
 typedef struct {
   u32 lookup_miss;
 
@@ -198,8 +290,7 @@ u8 * format_mpls_gre_header (u8 * s, va_list * args);
 
 #define foreach_mpls_input_next                        \
 _(DROP, "error-drop")                           \
-_(IP4_INPUT, "ip4-input")                       \
-_(L2_OUTPUT, "l2-output")
+_(LOOKUP, "mpls-lookup")
 
 typedef enum {
 #define _(s,n) MPLS_INPUT_NEXT_##s,
@@ -208,6 +299,28 @@ typedef enum {
   MPLS_INPUT_N_NEXT,
 } mpls_input_next_t;
 
+#define foreach_mpls_lookup_next               \
+_(DROP, "error-drop")                           \
+_(IP4_INPUT, "ip4-input")                       \
+_(L2_OUTPUT, "l2-output")
+
+// FIXME remove.
+typedef enum {
+#define _(s,n) MPLS_LOOKUP_NEXT_##s,
+  foreach_mpls_lookup_next
+#undef _
+  MPLS_LOOKUP_N_NEXT,
+} mpls_lookup_next_t;
+
+#define foreach_mpls_output_next               \
+_(DROP, "error-drop")                           
+
+typedef enum {
+#define _(s,n) MPLS_OUTPUT_NEXT_##s,
+  foreach_mpls_output_next
+#undef _
+  MPLS_OUTPUT_N_NEXT,
+} mpls_output_next_t;
 
 typedef struct {
   u32 lookup_miss;