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-rw-r--r--vnet/vnet/mpls/mpls.h362
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diff --git a/vnet/vnet/mpls/mpls.h b/vnet/vnet/mpls/mpls.h
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+/*
+ * Copyright (c) 2015 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:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef included_vnet_mpls_gre_h
+#define included_vnet_mpls_gre_h
+
+#include <vnet/vnet.h>
+#include <vnet/gre/gre.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 */
+ gre_header_t gre; /* 4 bytes */
+ mpls_unicast_header_t labels[0]; /* 4 bytes each */
+}) ip4_gre_and_mpls_header_t;
+
+extern vnet_hw_interface_class_t mpls_gre_hw_interface_class;
+
+typedef enum {
+#define mpls_error(n,s) MPLS_ERROR_##n,
+#include <vnet/mpls/error.def>
+#undef mpls_error
+ MPLS_N_ERROR,
+} mpls_gre_error_t;
+
+/*
+ * No protocol info, MPLS labels don't have a next-header field
+ * presumably the label field tells all...
+ */
+
+typedef struct {
+ fib_node_t mgt_node;
+ ip4_address_t tunnel_src;
+ ip4_address_t tunnel_dst;
+ ip4_address_t intfc_address;
+ u32 mask_width;
+ u32 inner_fib_index;
+ u32 outer_fib_index;
+ u32 encap_index;
+ 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 {
+ u8 tunnel_dst[6];
+ ip4_address_t intfc_address;
+ u32 tx_sw_if_index;
+ u32 inner_fib_index;
+ u32 mask_width;
+ u32 encap_index;
+ u32 hw_if_index;
+ u8 * rewrite_data;
+ u8 l2_only;
+ fib_node_index_t fei;
+} mpls_eth_tunnel_t;
+
+typedef struct {
+ mpls_unicast_header_t *labels;
+ /* only for policy tunnels */
+ u8 * rewrite;
+ u32 output_next_index;
+} mpls_encap_t;
+
+typedef struct {
+ u32 tx_fib_index;
+ 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;
+
+ /* pool of ethernet tunnel instances */
+ mpls_eth_tunnel_t *eth_tunnels;
+ u32 * free_eth_sw_if_indices;
+
+ /* Encap side: map (fib, dst_address) to mpls label stack */
+ mpls_encap_t * encaps;
+ uword * mpls_encap_by_fib_and_dest;
+
+ /* Decap side: map rx label to FIB */
+ mpls_decap_t * decaps;
+ uword * mpls_decap_by_rx_fib_and_label;
+
+ /* mpls-o-e policy tunnel next index for ip4/ip6-classify */
+ 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;
+
+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_gre_header_with_length;
+format_function_t format_mpls_eth_header_with_length;
+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;
+
+/* Parse mpls protocol as 0xXXXX or protocol name.
+ In either host or network byte order. */
+unformat_function_t unformat_mpls_protocol_host_byte_order;
+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;
+unformat_function_t unformat_pg_mpls_header;
+
+/* manually added to the interface output node in mpls.c */
+#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);
+
+int mpls_label_from_fib_id_and_dest (mpls_main_t *gm, u32 fib_id,
+ u32 dst_address, u32 *labelp);
+
+int vnet_mpls_gre_add_del_tunnel (ip4_address_t *src,
+ ip4_address_t *dst,
+ ip4_address_t *intfc,
+ u32 mask_width,
+ u32 inner_fib_id, u32 outer_fib_id,
+ u32 * tunnel_intfc_sw_if_index,
+ u8 l2_only,
+ u8 is_add);
+
+int vnet_mpls_ethernet_add_del_tunnel (u8 *dst,
+ ip4_address_t *intfc,
+ u32 mask_width,
+ u32 inner_fib_id,
+ u32 tx_sw_if_index,
+ u32 * tunnel_sw_if_index,
+ u8 l2_only,
+ u8 is_add);
+
+int vnet_mpls_gre_delete_fib_tunnels (u32 fib_id);
+
+int mpls_fib_reset_labels (u32 fib_id);
+
+int vnet_mpls_add_del_decap (u32 rx_fib_id,
+ u32 tx_fib_id,
+ u32 label_host_byte_order,
+ int s_bit, int next_index, int is_add);
+
+int vnet_mpls_add_del_encap (ip4_address_t *dest, u32 fib_id,
+ u32 *labels_host_byte_order,
+ u32 policy_tunnel_index,
+ int no_dst_hash, u32 * indexp, int is_add);
+
+int vnet_mpls_policy_tunnel_add_rewrite (mpls_main_t * mm,
+ mpls_encap_t * e,
+ u32 policy_tunnel_index);
+
+typedef struct {
+ u32 lookup_miss;
+
+ /* Tunnel-id / index in tunnel vector */
+ u32 tunnel_id;
+
+ /* mpls encap index */
+ u32 mpls_encap_index;
+
+ /* pkt length */
+ u32 length;
+
+ /* tunnel ip4 addresses */
+ ip4_address_t src;
+ ip4_address_t dst;
+} mpls_gre_tx_trace_t;
+
+u8 * format_mpls_gre_tx_trace (u8 * s, va_list * args);
+u8 * format_mpls_gre_header (u8 * s, va_list * args);
+
+#define foreach_mpls_input_next \
+_(DROP, "error-drop") \
+_(LOOKUP, "mpls-lookup")
+
+typedef enum {
+#define _(s,n) MPLS_INPUT_NEXT_##s,
+ foreach_mpls_input_next
+#undef _
+ 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;
+
+ /* Tunnel-id / index in tunnel vector */
+ u32 tunnel_id;
+
+ /* output interface */
+ u32 tx_sw_if_index;
+
+ /* mpls encap index */
+ u32 mpls_encap_index;
+
+ /* pkt length */
+ u32 length;
+
+ u8 dst[6];
+} mpls_eth_tx_trace_t;
+
+u8 * format_mpls_eth_tx_trace (u8 * s, va_list * args);
+
+typedef struct {
+ u32 fib_index;
+ u32 entry_index;
+ u32 dest;
+ u32 s_bit;
+ u32 label;
+} show_mpls_fib_t;
+
+int
+mpls_dest_cmp(void * a1, void * a2);
+
+int
+mpls_fib_index_cmp(void * a1, void * a2);
+
+int
+mpls_label_cmp(void * a1, void * a2);
+
+#endif /* included_vnet_mpls_gre_h */