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Diffstat (limited to 'src/plugins/lisp/lisp-gpe/lisp_gpe_sub_interface.h')
-rw-r--r-- | src/plugins/lisp/lisp-gpe/lisp_gpe_sub_interface.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/plugins/lisp/lisp-gpe/lisp_gpe_sub_interface.h b/src/plugins/lisp/lisp-gpe/lisp_gpe_sub_interface.h new file mode 100644 index 00000000000..c8b447a65dc --- /dev/null +++ b/src/plugins/lisp/lisp-gpe/lisp_gpe_sub_interface.h @@ -0,0 +1,157 @@ +/* + * 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 <lisp/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; + + ip_addr_v6 (&key.local_rloc).as_u64[0] = addr->as_u64[0]; + ip_addr_v6 (&key.local_rloc).as_u64[1] = addr->as_u64[1]; + ip_addr_version (&key.local_rloc) = AF_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; + + ip_addr_v4 (&key.local_rloc).as_u32 = addr->as_u32; + key.local_rloc.version = AF_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 |