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/*
* Copyright (c) 2016 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.
*/
/**
* @file
* @brief LISP sub-interfaces.
*
*/
#ifndef __LISP_GPE_SUB_INTERFACE_H__
#define __LISP_GPE_SUB_INTERFACE_H__
#include <vnet/lisp-gpe/lisp_gpe.h>
/**
* A Key for lookup in the L£ sub-interface DB
*/
typedef struct lisp_gpe_sub_interface_key_t_
{
/**
* The local-RLOC. This is the interface's 'source' address.
*/
ip_address_t local_rloc;
/**
* The VNI. In network byte order!
*/
u32 vni;
} lisp_gpe_sub_interface_key_t;
/**
* @brief A LISP L3 sub-interface
*
* A LISP sub-interface is a multi-access interface, whose local address is a
* single local-RLOC. Adjacencies that form on this sub-interface, represent
* remote RLOCs.
* This is analogous to an ethernet interface.
* As with all interface types it can only be present in one VRF, hence a
* LISP sub-interface is per-local-rloc and per-VNI.
*/
typedef struct lisp_gpe_sub_interface_t_
{
/**
* The interface's key inthe DB; rloc & vni;
* The key is allocated from the heap so it can be used in the hash-table.
* if it's part of the object, then it is subjet to realloc, which no-worky.
*/
lisp_gpe_sub_interface_key_t *key;
/**
* The Table-ID in the overlay that this interface is bound to.
*/
u32 eid_table_id;
/**
* A reference counting lock on the number of users of this interface.
* When this count drops to 0 the interface is deleted.
*/
u32 locks;
/**
* The SW if index assigned to this sub-interface
*/
u32 sw_if_index;
/**
* The SW IF index assigned to the main interface of which this is a sub.
*/
u32 main_sw_if_index;
} lisp_gpe_sub_interface_t;
extern index_t lisp_gpe_sub_interface_find_or_create_and_lock (const
ip_address_t *
lrloc,
u32
eid_table_id,
u32 vni);
extern u8 *format_lisp_gpe_sub_interface (u8 * s, va_list ap);
extern void lisp_gpe_sub_interface_unlock (index_t itf);
extern const lisp_gpe_sub_interface_t *lisp_gpe_sub_interface_get (index_t
itf);
/**
* A DB of all L3 sub-interfaces. The key is:{VNI,l-RLOC}
*/
extern uword *lisp_gpe_sub_interfaces_sw_if_index;
/**
* @brief
* Get a VNET L3 interface matching the local-RLOC and VNI
* Called from the data-plane
*/
always_inline u32
lisp_gpe_sub_interface_find_ip6 (const ip6_address_t * addr, u32 vni)
{
lisp_gpe_sub_interface_key_t key;
const uword *p;
key.local_rloc.ip.v6.as_u64[0] = addr->as_u64[0];
key.local_rloc.ip.v6.as_u64[1] = addr->as_u64[1];
key.local_rloc.version = IP6;
key.vni = vni;
p = hash_get_mem (&lisp_gpe_sub_interfaces_sw_if_index, &key);
if (NULL != p)
return p[0];
return (INDEX_INVALID);
}
/**
* @brief
* Get a VNET L3 interface matching the local-RLOC and VNI
* Called from the data-plane
*/
always_inline index_t
lisp_gpe_sub_interface_find_ip4 (const ip4_address_t * addr, u32 vni)
{
lisp_gpe_sub_interface_key_t key;
const uword *p;
key.local_rloc.ip.v4.as_u32 = addr->as_u32;
key.local_rloc.version = IP4;
key.vni = vni;
p = hash_get_mem (&lisp_gpe_sub_interfaces_sw_if_index, &key);
if (NULL != p)
return p[0];
return (INDEX_INVALID);
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
#endif
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