From bac3da61644515f05663789b122554dc77549286 Mon Sep 17 00:00:00 2001 From: Luca Muscariello Date: Thu, 17 Jan 2019 13:47:57 +0100 Subject: This is the first commit of the hicn project Change-Id: I6f2544ad9b9f8891c88cc4bcce3cf19bd3cc863f Signed-off-by: Luca Muscariello --- hicn-plugin/src/faces/ip/face_ip.h | 241 +++++++++++++++++++++++++++++++++++++ 1 file changed, 241 insertions(+) create mode 100755 hicn-plugin/src/faces/ip/face_ip.h (limited to 'hicn-plugin/src/faces/ip/face_ip.h') diff --git a/hicn-plugin/src/faces/ip/face_ip.h b/hicn-plugin/src/faces/ip/face_ip.h new file mode 100755 index 000000000..8c31f6dd3 --- /dev/null +++ b/hicn-plugin/src/faces/ip/face_ip.h @@ -0,0 +1,241 @@ +/* + * Copyright (c) 2017-2019 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 __HICN_FACE_IP_H__ +#define __HICN_FACE_IP_H__ + +#include +#include +#include "../face.h" +#include "../../cache_policies/cs_policy.h" + +/** + * @file + * + * @brief IP face + * + * A face is carried through nodes as a dpo. The face state is the object + * pointed by the dpoi_index in the dpo_id_t (see + * https://docs.fd.io/vpp/18.07/d0/d37/dpo_8h_source.html) + */ +typedef struct hicn_ip_face_t_ +{ + /** + * The headers to paint, in packet painting order + */ + /* Local address of the interface sw_if */ + ip46_address_t local_addr; + + /* Remote address of neighbor */ + ip46_address_t remote_addr; + +} hicn_face_ip_t; + + +/** + * Hash tables that indexes a face by local address. For fast lookup when an + * data arrives. + */ +extern mhash_t hicn_face_ip_local_hashtb; + +/** + * Hash tables that indexes a face by remote address. For fast lookup when an + * interest arrives. + */ +extern mhash_t hicn_face_ip_remote_hashtb; + +/** + * Key definition for the mhash table. An ip face is uniquely identified by ip + * address and the interface id. The ip address can correspond to the remote ip + * address of the next hicn hop, or to the local address of the receiving + * interface. The former is used to retrieve the incoming face when an interest + * is received, the latter when the arring packet is a data. + */ +typedef struct hicn_face_ip_key_s +{ + ip46_address_t addr; + u32 sw_if; +} hicn_face_ip_key_t; + + +extern hicn_face_type_t hicn_face_ip_type; +extern hicn_face_vft_t ip_vft; + +/** + * @brief Create the key object for the mhash. Fill in the key object with the + * expected values. + * + * @param addr Local or remote ip v6 address of the face + * @param sw_if interface associated to the face + * @param key Pointer to an allocated hicn_face_ip_key_t object + */ +always_inline void +hicn_face_ip6_get_key (const ip6_address_t * addr, + u32 sw_if, hicn_face_ip_key_t * key) +{ + key->addr.ip6 = *addr; + key->sw_if = sw_if; +} + + +/** + * @brief Create the key object for the mhash. Fill in the key object with the + * expected values. + * + * @param addr Local or remote ip v4 address of the face + * @param sw_if interface associated to the face + * @param key Pointer to an allocated hicn_face_ip_key_t object + */ +always_inline void +hicn_face_ip4_get_key (const ip4_address_t * addr, + u32 sw_if, hicn_face_ip_key_t * key) +{ + ip46_address_set_ip4 (&(key->addr), addr); + key->sw_if = sw_if; +} + +/** + * @brief Get the dpoi from the ip v4 address. Does not add any lock. + * + * @param addr Ip v4 address used to create the key for the hash table. + * @param sw_if Software interface id used to create the key for the hash table. + * @param hashtb Hash table (remote or local) where to perform the lookup. + * + * @result Pointer to the face. + */ +always_inline hicn_face_t * +hicn_face_ip4_get (const ip4_address_t * addr, u32 sw_if, mhash_t * hashtb) +{ + hicn_face_ip_key_t key; + + hicn_face_ip4_get_key (addr, sw_if, &key); + + hicn_face_id_t *dpoi_index = (hicn_face_id_t *) mhash_get (hashtb, + &key); + + return dpoi_index == NULL ? NULL : hicn_dpoi_get_from_idx (*dpoi_index); +} + +/** + * @brief Get the dpoi from the ip v6 address. Does not add any lock. + * + * @param addr Ip v6 address used to create the key for the hash table. + * @param sw_if Software interface id used to create the key for the hash table. + * @param hashtb Hash table (remote or local) where to perform the lookup. + * + * @result Pointer to the face. + */ +always_inline hicn_face_t * +hicn_face_ip6_get (const ip6_address_t * addr, u32 sw_if, mhash_t * hashtb) +{ + hicn_face_ip_key_t key; + + hicn_face_ip6_get_key (addr, sw_if, &key); + + hicn_face_id_t *dpoi_index = (hicn_face_id_t *) mhash_get (hashtb, + &key); + + return dpoi_index == NULL ? NULL : hicn_dpoi_get_from_idx (*dpoi_index); +} + +/** + * @brief Create a new face ip. API for other modules (e.g., routing) + * + * @param local_addr Local ip v4 or v6 address of the face + * @param remote_addr Remote ip v4 or v6 address of the face + * @param sw_if interface associated to the face + * @param is_app_face Boolean to set the face as an application face + * @param pfaceid Pointer to return the face id + * @return HICN_ERROR_FACE_NO_GLOBAL_IP if the face does not have a globally + * reachable ip address, otherwise HICN_ERROR_NONE + */ +int hicn_face_ip_add (const ip46_address_t * local_addr, + const ip46_address_t * remote_addr, + int swif, hicn_face_id_t * pfaceid); + +/** + * @brief Create a new incomplete face ip. (Meant to be used by the data plane) + * + * @param local_addr Local ip v4 or v6 address of the face + * @param remote_addr Remote ip v4 or v6 address of the face + * @param sw_if interface associated to the face + * @param pfaceid Pointer to return the face id + * @return HICN_ERROR_FACE_NO_GLOBAL_IP if the face does not have a globally + * reachable ip address, otherwise HICN_ERROR_NONE + */ +always_inline void +hicn_iface_ip_add (const ip46_address_t * local_addr, + const ip46_address_t * remote_addr, + int sw_if, hicn_face_id_t * pfaceid) +{ + hicn_face_t *face; + pool_get (hicn_dpoi_face_pool, face); + + hicn_face_ip_t *ip_face = (hicn_face_ip_t *) (face->data); + + clib_memcpy (&(ip_face->local_addr.ip6), local_addr, + sizeof (ip6_address_t)); + clib_memcpy (&(ip_face->remote_addr.ip6), remote_addr, + sizeof (ip6_address_t)); + face->shared.sw_if = sw_if; + + face->shared.adj = ADJ_INDEX_INVALID; + face->shared.pl_id = (u16) 0; + face->shared.face_type = hicn_face_ip_type; + face->shared.flags = HICN_FACE_FLAGS_IFACE; + face->shared.locks = 0; + + hicn_face_ip_key_t key; + hicn_face_ip6_get_key (&(remote_addr->ip6), sw_if, &key); + *pfaceid = hicn_dpoi_get_index (face); + + mhash_set_mem (&hicn_face_ip_remote_hashtb, &key, (uword *) pfaceid, 0); +} + +/** + * @brief Delete an ip face + * + * @param face_id Id of the face to delete + * @return HICN_ERROR_FACE_NOT_FOUND if the face does not exist, otherwise + * HICN_ERROR_NONE + */ +int hicn_face_ip_del (hicn_face_id_t face_id); + +/** + * @brief Format a IP face + * + * @param s Pointer to a previous string. If null it will be initialize + * @param args Array storing input values. Expected u32 face_id and u32 indent + * @return String with the formatted face + */ +u8 *format_hicn_face_ip (u8 * s, va_list * args); + +/** + * @brief Create a dpo from an ip face + * + * @param face Face from which to create the dpo + * @return the dpo + */ +void hicn_face_ip_get_dpo (hicn_face_t * face, dpo_id_t * dpo); + +#endif // __HICN_FACE_IP_H__ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg