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-rw-r--r--src/vnet/vxlan/vxlan.h199
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diff --git a/src/vnet/vxlan/vxlan.h b/src/vnet/vxlan/vxlan.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_vxlan_h
+#define included_vnet_vxlan_h
+
+#include <vppinfra/error.h>
+#include <vppinfra/hash.h>
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/l2/l2_input.h>
+#include <vnet/l2/l2_output.h>
+#include <vnet/l2/l2_bd.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/vxlan/vxlan_packet.h>
+#include <vnet/ip/ip4_packet.h>
+#include <vnet/ip/ip6_packet.h>
+#include <vnet/ip/udp.h>
+#include <vnet/dpo/dpo.h>
+#include <vnet/adj/adj_types.h>
+
+typedef CLIB_PACKED (struct {
+ ip4_header_t ip4; /* 20 bytes */
+ udp_header_t udp; /* 8 bytes */
+ vxlan_header_t vxlan; /* 8 bytes */
+}) ip4_vxlan_header_t;
+
+typedef CLIB_PACKED (struct {
+ ip6_header_t ip6; /* 40 bytes */
+ udp_header_t udp; /* 8 bytes */
+ vxlan_header_t vxlan; /* 8 bytes */
+}) ip6_vxlan_header_t;
+
+typedef CLIB_PACKED(struct {
+ /*
+ * Key fields: ip src and vxlan vni on incoming VXLAN packet
+ * all fields in NET byte order
+ */
+ union {
+ struct {
+ u32 src;
+ u32 vni; /* shifted left 8 bits */
+ };
+ u64 as_u64;
+ };
+}) vxlan4_tunnel_key_t;
+
+typedef CLIB_PACKED(struct {
+ /*
+ * Key fields: ip src and vxlan vni on incoming VXLAN packet
+ * all fields in NET byte order
+ */
+ ip6_address_t src;
+ u32 vni; /* shifted left 8 bits */
+}) vxlan6_tunnel_key_t;
+
+typedef struct {
+ /* Rewrite string. $$$$ embed vnet_rewrite header */
+ u8 * rewrite;
+
+ /* FIB DPO for IP forwarding of VXLAN encap packet */
+ dpo_id_t next_dpo;
+
+ /* storage for the hash key */
+ union {
+ vxlan4_tunnel_key_t *key4; /* unused for now */
+ vxlan6_tunnel_key_t *key6;
+ };
+
+ /* vxlan VNI in HOST byte order */
+ u32 vni;
+
+ /* tunnel src and dst addresses */
+ ip46_address_t src;
+ ip46_address_t dst;
+
+ /* mcast packet output intfc index (used only if dst is mcast) */
+ u32 mcast_sw_if_index;
+
+ /* decap next index */
+ u32 decap_next_index;
+
+ /* The FIB index for src/dst addresses */
+ u32 encap_fib_index;
+
+ /* vnet intfc index */
+ u32 sw_if_index;
+ u32 hw_if_index;
+
+ /**
+ * Linkage into the FIB object graph
+ */
+ fib_node_t node;
+
+ /*
+ * The FIB entry for (depending on VXLAN tunnel is unicast or mcast)
+ * sending unicast VXLAN encap packets or receiving mcast VXLAN packets
+ */
+ fib_node_index_t fib_entry_index;
+ adj_index_t mcast_adj_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;
+} vxlan_tunnel_t;
+
+#define foreach_vxlan_input_next \
+_(DROP, "error-drop") \
+_(L2_INPUT, "l2-input")
+
+typedef enum {
+#define _(s,n) VXLAN_INPUT_NEXT_##s,
+ foreach_vxlan_input_next
+#undef _
+ VXLAN_INPUT_N_NEXT,
+} vxlan_input_next_t;
+
+typedef enum {
+#define vxlan_error(n,s) VXLAN_ERROR_##n,
+#include <vnet/vxlan/vxlan_error.def>
+#undef vxlan_error
+ VXLAN_N_ERROR,
+} vxlan_input_error_t;
+
+typedef struct {
+ ip46_address_t ip;
+ fib_node_index_t fib_entry_index;
+ adj_index_t mcast_adj_index;
+} mcast_remote_t;
+
+typedef struct {
+ /* vector of encap tunnel instances */
+ vxlan_tunnel_t * tunnels;
+
+ /* lookup tunnel by key */
+ uword * vxlan4_tunnel_by_key; /* keyed on ipv4.dst + vni */
+ uword * vxlan6_tunnel_by_key; /* keyed on ipv6.dst + vni */
+
+ /* local VTEP IPs ref count used by vxlan-bypass node to check if
+ received VXLAN packet DIP matches any local VTEP address */
+ uword * vtep4; /* local ip4 VTEPs keyed on their ip4 addr */
+ uword * vtep6; /* local ip6 VTEPs keyed on their ip6 addr */
+
+ /* set of active remote mcast VTEP */
+ mcast_remote_t * mcast_eps;
+ uword * mcast_ep_by_ip; /* mcast VTEPs keyed on their ip46 addr */
+
+ /* Free vlib hw_if_indices */
+ u32 * free_vxlan_tunnel_hw_if_indices;
+
+ /* Mapping from sw_if_index to tunnel index */
+ u32 * tunnel_index_by_sw_if_index;
+
+ /* convenience */
+ vlib_main_t * vlib_main;
+ vnet_main_t * vnet_main;
+} vxlan_main_t;
+
+vxlan_main_t vxlan_main;
+
+extern vlib_node_registration_t vxlan4_input_node;
+extern vlib_node_registration_t vxlan6_input_node;
+extern vlib_node_registration_t vxlan4_encap_node;
+extern vlib_node_registration_t vxlan6_encap_node;
+
+u8 * format_vxlan_encap_trace (u8 * s, va_list * args);
+
+typedef struct {
+ u8 is_add;
+
+ /* we normally use is_ip4, but since this adds to the
+ * structure, this seems less of abreaking change */
+ u8 is_ip6;
+ ip46_address_t src, dst;
+ u32 mcast_sw_if_index;
+ u32 encap_fib_index;
+ u32 decap_next_index;
+ u32 vni;
+} vnet_vxlan_add_del_tunnel_args_t;
+
+int vnet_vxlan_add_del_tunnel
+(vnet_vxlan_add_del_tunnel_args_t *a, u32 * sw_if_indexp);
+
+#endif /* included_vnet_vxlan_h */