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/*
* Copyright (c) 2018 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_gbp_h
#define included_vnet_vxlan_gbp_h
#include <vppinfra/error.h>
#include <vppinfra/hash.h>
#include <vppinfra/bihash_16_8.h>
#include <vppinfra/bihash_24_8.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-gbp/vxlan_gbp_packet.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/udp/udp_local.h>
#include <vnet/udp/udp_packet.h>
#include <vnet/dpo/dpo.h>
#include <vnet/adj/adj_types.h>
/* *INDENT-OFF* */
typedef CLIB_PACKED (struct {
ip4_header_t ip4; /* 20 bytes */
udp_header_t udp; /* 8 bytes */
vxlan_gbp_header_t vxlan_gbp; /* 8 bytes */
}) ip4_vxlan_gbp_header_t;
typedef CLIB_PACKED (struct {
ip6_header_t ip6; /* 40 bytes */
udp_header_t udp; /* 8 bytes */
vxlan_gbp_header_t vxlan_gbp; /* 8 bytes */
}) ip6_vxlan_gbp_header_t;
/* *INDENT-ON* */
/*
* Key fields: remote ip, vni on incoming VXLAN packet
* all fields in NET byte order
*/
typedef clib_bihash_kv_16_8_t vxlan4_gbp_tunnel_key_t;
/*
* Key fields: remote ip, vni and fib index on incoming VXLAN packet
* ip, vni fields in NET byte order
* fib index field in host byte order
*/
typedef clib_bihash_kv_24_8_t vxlan6_gbp_tunnel_key_t;
typedef enum vxlan_gbp_tunnel_mode_t_
{
VXLAN_GBP_TUNNEL_MODE_L2,
VXLAN_GBP_TUNNEL_MODE_L3,
} vxlan_gbp_tunnel_mode_t;
extern u8 *format_vxlan_gbp_tunnel_mode (u8 * s, va_list * args);
typedef struct
{
/* Required for pool_get_aligned */
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
/* FIB DPO for IP forwarding of VXLAN encap packet */
dpo_id_t next_dpo;
/* flags */
u16 flags;
/* 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;
/* The FIB index for src/dst addresses */
u32 encap_fib_index;
/* vnet intfc index */
u32 sw_if_index;
u32 hw_if_index;
/** Next node after VxLAN-GBP encap */
uword encap_next_node;
/**
* Tunnel mode.
* L2 tunnels decap to L2 path, L3 tunnels to the L3 path
*/
vxlan_gbp_tunnel_mode_t mode;
/**
* Linkage into the FIB object graph
*/
fib_node_t node;
/*
* The FIB entry for (depending on VXLAN-GBP tunnel is unicast or mcast)
* sending unicast VXLAN-GBP encap packets or receiving mcast VXLAN-GBP 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 destination. 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;
u32 dev_instance; /* Real device instance in tunnel vector */
u32 user_instance; /* Instance name being shown to user */
VNET_DECLARE_REWRITE;
} vxlan_gbp_tunnel_t;
#define foreach_vxlan_gbp_input_next \
_(DROP, "error-drop") \
_(PUNT, "punt-dispatch") \
_(L2_INPUT, "l2-input") \
_(IP4_INPUT, "ip4-input") \
_(IP6_INPUT, "ip6-input")
typedef enum
{
#define _(s,n) VXLAN_GBP_INPUT_NEXT_##s,
foreach_vxlan_gbp_input_next
#undef _
VXLAN_GBP_INPUT_N_NEXT,
} vxlan_gbp_input_next_t;
typedef enum
{
#define vxlan_gbp_error(n,s) VXLAN_GBP_ERROR_##n,
#include <vnet/vxlan-gbp/vxlan_gbp_error.def>
#undef vxlan_gbp_error
VXLAN_GBP_N_ERROR,
} vxlan_gbp_input_error_t;
/**
* Call back function packets that do not match a configured tunnel
*/
typedef vxlan_gbp_input_next_t (*vxlan_bgp_no_tunnel_t) (vlib_buffer_t * b,
u32 thread_index,
u8 is_ip6);
typedef struct
{
/* vector of encap tunnel instances */
vxlan_gbp_tunnel_t *tunnels;
/* lookup tunnel by key */
clib_bihash_16_8_t vxlan4_gbp_tunnel_by_key; /* keyed on ipv4.dst + fib + vni */
clib_bihash_24_8_t vxlan6_gbp_tunnel_by_key; /* keyed on ipv6.dst + fib + 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 */
/* mcast shared info */
uword *mcast_shared; /* keyed on mcast ip46 addr */
/* Mapping from sw_if_index to tunnel index */
u32 *tunnel_index_by_sw_if_index;
/* On demand udp port registration */
u32 udp_ports_registered;
/* convenience */
vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
/* Record used instances */
uword *instance_used;
/**
* Punt reasons for no such tunnel
*/
vlib_punt_reason_t punt_no_such_tunnel[FIB_PROTOCOL_IP_MAX];
} vxlan_gbp_main_t;
extern vxlan_gbp_main_t vxlan_gbp_main;
extern vlib_node_registration_t vxlan4_gbp_input_node;
extern vlib_node_registration_t vxlan6_gbp_input_node;
extern vlib_node_registration_t vxlan4_gbp_encap_node;
extern vlib_node_registration_t vxlan6_gbp_encap_node;
extern void vxlan_gbp_register_udp_ports (void);
extern void vxlan_gbp_unregister_udp_ports (void);
u8 *format_vxlan_gbp_encap_trace (u8 * s, va_list * args);
typedef struct
{
u8 is_add;
u8 is_ip6;
u32 instance;
vxlan_gbp_tunnel_mode_t mode;
ip46_address_t src, dst;
u32 mcast_sw_if_index;
u32 encap_fib_index;
u32 vni;
} vnet_vxlan_gbp_tunnel_add_del_args_t;
int vnet_vxlan_gbp_tunnel_add_del
(vnet_vxlan_gbp_tunnel_add_del_args_t * a, u32 * sw_if_indexp);
int vnet_vxlan_gbp_tunnel_del (u32 sw_if_indexp);
void vnet_int_vxlan_gbp_bypass_mode (u32 sw_if_index, u8 is_ip6,
u8 is_enable);
always_inline u32
vxlan_gbp_tunnel_by_sw_if_index (u32 sw_if_index)
{
vxlan_gbp_main_t *vxm = &vxlan_gbp_main;
if (sw_if_index >= vec_len (vxm->tunnel_index_by_sw_if_index))
return ~0;
return (vxm->tunnel_index_by_sw_if_index[sw_if_index]);
}
#endif /* included_vnet_vxlan_gbp_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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