2b202bc4b2
Type: refactor Change-Id: I54df533a8f863c4e49742903cf2457f18b4fc506 Signed-off-by: Neale Ranns <nranns@cisco.com>
158 lines
3.9 KiB
C
158 lines
3.9 KiB
C
/*
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* Copyright (c) 2016 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @file
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* @brief LISP sub-interfaces.
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*
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*/
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#ifndef __LISP_GPE_SUB_INTERFACE_H__
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#define __LISP_GPE_SUB_INTERFACE_H__
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#include <lisp/lisp-gpe/lisp_gpe.h>
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/**
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* A Key for lookup in the L£ sub-interface DB
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*/
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typedef struct lisp_gpe_sub_interface_key_t_
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{
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/**
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* The local-RLOC. This is the interface's 'source' address.
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*/
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ip_address_t local_rloc;
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/**
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* The VNI. In network byte order!
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*/
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u32 vni;
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} lisp_gpe_sub_interface_key_t;
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/**
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* @brief A LISP L3 sub-interface
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*
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* A LISP sub-interface is a multi-access interface, whose local address is a
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* single local-RLOC. Adjacencies that form on this sub-interface, represent
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* remote RLOCs.
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* This is analogous to an ethernet interface.
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* As with all interface types it can only be present in one VRF, hence a
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* LISP sub-interface is per-local-rloc and per-VNI.
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*/
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typedef struct lisp_gpe_sub_interface_t_
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{
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/**
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* The interface's key inthe DB; rloc & vni;
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* The key is allocated from the heap so it can be used in the hash-table.
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* if it's part of the object, then it is subjet to realloc, which no-worky.
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*/
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lisp_gpe_sub_interface_key_t *key;
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/**
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* The Table-ID in the overlay that this interface is bound to.
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*/
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u32 eid_table_id;
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/**
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* A reference counting lock on the number of users of this interface.
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* When this count drops to 0 the interface is deleted.
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*/
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u32 locks;
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/**
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* The SW if index assigned to this sub-interface
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*/
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u32 sw_if_index;
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/**
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* The SW IF index assigned to the main interface of which this is a sub.
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*/
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u32 main_sw_if_index;
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} lisp_gpe_sub_interface_t;
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extern index_t lisp_gpe_sub_interface_find_or_create_and_lock (const
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ip_address_t *
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lrloc,
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u32
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eid_table_id,
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u32 vni);
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extern u8 *format_lisp_gpe_sub_interface (u8 * s, va_list * ap);
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extern void lisp_gpe_sub_interface_unlock (index_t itf);
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extern const lisp_gpe_sub_interface_t *lisp_gpe_sub_interface_get (index_t
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itf);
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/**
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* A DB of all L3 sub-interfaces. The key is:{VNI,l-RLOC}
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*/
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extern uword *lisp_gpe_sub_interfaces_sw_if_index;
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/**
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* @brief
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* Get a VNET L3 interface matching the local-RLOC and VNI
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* Called from the data-plane
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*/
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always_inline u32
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lisp_gpe_sub_interface_find_ip6 (const ip6_address_t * addr, u32 vni)
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{
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lisp_gpe_sub_interface_key_t key;
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const uword *p;
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ip_addr_v6 (&key.local_rloc).as_u64[0] = addr->as_u64[0];
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ip_addr_v6 (&key.local_rloc).as_u64[1] = addr->as_u64[1];
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ip_addr_version (&key.local_rloc) = AF_IP6;
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key.vni = vni;
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p = hash_get_mem (&lisp_gpe_sub_interfaces_sw_if_index, &key);
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if (NULL != p)
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return p[0];
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return (INDEX_INVALID);
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}
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/**
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* @brief
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* Get a VNET L3 interface matching the local-RLOC and VNI
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* Called from the data-plane
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*/
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always_inline index_t
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lisp_gpe_sub_interface_find_ip4 (const ip4_address_t * addr, u32 vni)
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{
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lisp_gpe_sub_interface_key_t key;
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const uword *p;
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ip_addr_v4 (&key.local_rloc).as_u32 = addr->as_u32;
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key.local_rloc.version = AF_IP4;
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key.vni = vni;
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p = hash_get_mem (&lisp_gpe_sub_interfaces_sw_if_index, &key);
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if (NULL != p)
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return p[0];
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return (INDEX_INVALID);
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}
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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#endif
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