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/*
* l2_bd.h : layer 2 bridge domain
*
* Copyright (c) 2013 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_l2bd_h
#define included_l2bd_h
#include <vlib/vlib.h>
#include <vnet/vnet.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/ethernet/mac_address.h>
typedef enum l2_bd_port_type_t_
{
L2_BD_PORT_TYPE_NORMAL = 0,
L2_BD_PORT_TYPE_BVI = 1,
L2_BD_PORT_TYPE_UU_FWD = 2,
} l2_bd_port_type_t;
typedef struct
{
/* hash bd_id -> bd_index */
uword *bd_index_by_bd_id;
/* Busy bd_index bitmap */
uword *bd_index_bitmap;
/* convenience */
vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
} bd_main_t;
extern bd_main_t bd_main;
/* Bridge domain member */
#define L2_FLOOD_MEMBER_NORMAL 0
#define L2_FLOOD_MEMBER_BVI 1
typedef struct
{
u32 sw_if_index; /* the output L2 interface */
u8 flags; /* 0=normal, 1=bvi */
u8 shg; /* split horizon group number */
u16 spare;
} l2_flood_member_t;
/* Per-bridge domain configuration */
typedef struct
{
/*
* Contains bit enables for flooding, learning, and forwarding.
* All other feature bits should always be set.
*/
u32 feature_bitmap;
/*
* identity of the bridge-domain's BVI interface
* set to ~0 if there is no BVI
*/
u32 bvi_sw_if_index;
/*
* identity of the bridge-domain's UU flood interface
* set to ~0 if there is no such configuration
*/
u32 uu_fwd_sw_if_index;
/* bridge domain id, not to be confused with bd_index */
u32 bd_id;
/* Vector of member ports */
l2_flood_member_t *members;
/* First flood_count member ports are flooded */
u32 flood_count;
/* Tunnel Master (Multicast vxlan) are always flooded */
u32 tun_master_count;
/* Tunnels (Unicast vxlan) are flooded if there are no masters */
u32 tun_normal_count;
/* Interface on which packets are not flooded */
u32 no_flood_count;
/* hash ip4/ip6 -> mac for arp/nd termination */
uword *mac_by_ip4;
uword *mac_by_ip6;
/* mac aging */
u8 mac_age;
/* sequence number for bridge domain based flush of MACs */
u8 seq_num;
/* Bridge domain tag (C string NULL terminated) */
u8 *bd_tag;
} l2_bridge_domain_t;
/* Limit Bridge Domain ID to 24 bits to match 24-bit VNI range */
#define L2_BD_ID_MAX ((1<<24)-1)
typedef struct
{
u32 bd_id;
u8 flood;
u8 uu_flood;
u8 forward;
u8 learn;
u8 arp_term;
u8 arp_ufwd;
u8 mac_age;
u8 *bd_tag;
u8 is_add;
} l2_bridge_domain_add_del_args_t;
/* Return 1 if bridge domain has been initialized */
always_inline u32
bd_is_valid (l2_bridge_domain_t * bd_config)
{
return (bd_config->feature_bitmap != 0);
}
/* Init bridge domain if not done already */
void bd_validate (l2_bridge_domain_t * bd_config);
void
bd_add_member (l2_bridge_domain_t * bd_config, l2_flood_member_t * member);
u32 bd_remove_member (l2_bridge_domain_t * bd_config, u32 sw_if_index);
typedef enum bd_flags_t_
{
L2_NONE = 0,
L2_LEARN = (1 << 0),
L2_FWD = (1 << 1),
L2_FLOOD = (1 << 2),
L2_UU_FLOOD = (1 << 3),
L2_ARP_TERM = (1 << 4),
L2_ARP_UFWD = (1 << 5),
} bd_flags_t;
u32 bd_set_flags (vlib_main_t * vm, u32 bd_index, bd_flags_t flags,
u32 enable);
void bd_set_mac_age (vlib_main_t * vm, u32 bd_index, u8 age);
int bd_add_del (l2_bridge_domain_add_del_args_t * args);
/**
* \brief Get a bridge domain.
*
* Get a bridge domain with the given bridge domain ID.
*
* \param bdm bd_main pointer.
* \param bd_id The bridge domain ID
* \return The bridge domain index in \c l2input_main->l2_bridge_domain_t vector.
*/
u32 bd_find_index (bd_main_t * bdm, u32 bd_id);
/**
* \brief Create a bridge domain.
*
* Create a bridge domain with the given bridge domain ID
*
* \param bdm bd_main pointer.
* \return The bridge domain index in \c l2input_main->l2_bridge_domain_t vector.
*/
u32 bd_add_bd_index (bd_main_t * bdm, u32 bd_id);
/**
* \brief Get or create a bridge domain.
*
* Get a bridge domain with the given bridge domain ID, if one exists, otherwise
* create one with the given ID, or the first unused ID if the given ID is ~0..
*
* \param bdm bd_main pointer.
* \param bd_id The bridge domain ID
* \return The bridge domain index in \c l2input_main->l2_bridge_domain_t vector.
*/
static inline u32
bd_find_or_add_bd_index (bd_main_t * bdm, u32 bd_id)
{
u32 bd_index = bd_find_index (bdm, bd_id);
if (bd_index == ~0)
return bd_add_bd_index (bdm, bd_id);
return bd_index;
}
u32 bd_add_del_ip_mac (u32 bd_index,
ip46_type_t type,
const ip46_address_t * ip_addr,
const mac_address_t * mac, u8 is_add);
void bd_flush_ip_mac (u32 bd_index);
#endif
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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