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/*
* Copyright (c) 2017 SUSE LLC.
* 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_geneve_h
#define included_vnet_geneve_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/geneve/geneve_packet.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/udp/udp.h>
#include <vnet/dpo/dpo.h>
#include <vnet/adj/adj_types.h>
#define SUPPORT_OPTIONS_HEADER 0
typedef CLIB_PACKED (struct
{
ip4_header_t ip4; /* 20 bytes */
udp_header_t udp; /* 8 bytes */
geneve_header_t geneve; /* Min 8 bytes, Max 260 bytes */
}) ip4_geneve_header_t;
typedef CLIB_PACKED (struct
{
ip6_header_t ip6; /* 40 bytes */
udp_header_t udp; /* 8 bytes */
geneve_header_t geneve; /* Min 8 bytes, Max 260 bytes */
}) ip6_geneve_header_t;
typedef CLIB_PACKED (struct
{
/*
* Key fields: ip source and geneve vni on incoming GENEVE packet
* all fields in NET byte order
*/
union
{
struct
{
u32 remote;
u32 vni; /* shifted left 8 bits */
};
u64 as_u64;
};
}) geneve4_tunnel_key_t;
typedef CLIB_PACKED (struct
{
/*
* Key fields: ip source and geneve vni on incoming GENEVE packet
* all fields in NET byte order
*/
ip6_address_t remote;
u32 vni; /* shifted left 8 bits */
}) geneve6_tunnel_key_t;
typedef struct
{
/* Rewrite string. $$$$ embed vnet_rewrite header */
u8 *rewrite;
/* FIB DPO for IP forwarding of GENEVE encap packet */
dpo_id_t next_dpo;
/* geneve VNI in HOST byte order */
u32 vni;
/* geneve OPTIONS LEN in HOST byte order */
#if SUPPORT_OPTIONS_HEADER==1
u8 options_len;
#endif
/* tunnel local and remote addresses */
ip46_address_t local;
ip46_address_t remote;
/* mcast packet output intfc index (used only if remote is mcast) */
u32 mcast_sw_if_index;
/* decap next index */
u32 decap_next_index;
/* The FIB index for local/remote 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 GENEVE tunnel is unicast or mcast)
* sending unicast GENEVE encap packets or receiving mcast GENEVE 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;
} geneve_tunnel_t;
#define foreach_geneve_input_next \
_(DROP, "error-drop") \
_(L2_INPUT, "l2-input")
typedef enum
{
#define _(s,n) GENEVE_INPUT_NEXT_##s,
foreach_geneve_input_next
#undef _
GENEVE_INPUT_N_NEXT,
} geneve_input_next_t;
typedef enum
{
#define geneve_error(n,s) GENEVE_ERROR_##n,
#include <vnet/geneve/geneve_error.def>
#undef geneve_error
GENEVE_N_ERROR,
} geneve_input_error_t;
typedef struct
{
/* vector of encap tunnel instances */
geneve_tunnel_t *tunnels;
/* lookup tunnel by key */
uword *geneve4_tunnel_by_key; /* keyed on ipv4.remote + vni */
uword *geneve6_tunnel_by_key; /* keyed on ipv6.remote + vni */
/* local VTEP IPs ref count used by geneve-bypass node to check if
received GENEVE 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 */
/* mcast shared info */
uword *mcast_shared; /* keyed on mcast ip46 addr */
/* Free vlib hw_if_indices */
u32 *free_geneve_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;
} geneve_main_t;
geneve_main_t geneve_main;
extern vlib_node_registration_t geneve4_input_node;
extern vlib_node_registration_t geneve6_input_node;
extern vlib_node_registration_t geneve4_encap_node;
extern vlib_node_registration_t geneve6_encap_node;
u8 *format_geneve_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 local, remote;
u32 mcast_sw_if_index;
u32 encap_fib_index;
u32 decap_next_index;
u32 vni;
} vnet_geneve_add_del_tunnel_args_t;
int vnet_geneve_add_del_tunnel
(vnet_geneve_add_del_tunnel_args_t * a, u32 * sw_if_indexp);
void vnet_int_geneve_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable);
#endif /* included_vnet_geneve_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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