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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 */
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