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Diffstat (limited to 'hicn-plugin/src/faces/ip/dpo_ip.h')
| -rwxr-xr-x | hicn-plugin/src/faces/ip/dpo_ip.h | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/hicn-plugin/src/faces/ip/dpo_ip.h b/hicn-plugin/src/faces/ip/dpo_ip.h new file mode 100755 index 000000000..675443277 --- /dev/null +++ b/hicn-plugin/src/faces/ip/dpo_ip.h @@ -0,0 +1,255 @@ +/* + * 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_DPO_IP_H__ +#define __HICN_DPO_IP_H__ + +#include <vnet/vnet.h> +#include <vnet/ip/ip4_packet.h> + +#include "face_ip.h" +#include "../face.h" + +/** + * @brief Initialize the internal structures of the dpo ip face module. + */ +void hicn_dpo_ip_module_init (void); + + +/** + * @brief Retrieve a face from the ip4 local address and returns its dpo. This + * method adds a lock on the face state. + * + * @param dpo: Result of the lookup. If the face doesn't exist dpo = NULL + * @param is_appface: Boolean that indicates whether the face is an application + * face or not + * @param local_addr: Ip v4 local address of the face + * @param sw_if: software interface id of the face + * + * @result HICN_ERROR_FACE_NOT_FOUND if the face does not exist, otherwise HICN_ERROR_NONE. + */ +always_inline int +hicn_dpo_ip4_lock_from_local (dpo_id_t * dpo, + u8 * is_appface, + const ip4_address_t * local_addr, u32 sw_if) +{ + hicn_face_t *face = + hicn_face_ip4_get (local_addr, sw_if, &hicn_face_ip_local_hashtb); + + if (PREDICT_FALSE (face == NULL)) + return HICN_ERROR_FACE_NOT_FOUND; + + *is_appface = face->shared.flags & HICN_FACE_FLAGS_APPFACE_PROD; + + hicn_face_id_t dpoi_index = hicn_dpoi_get_index (face); + dpo_set (dpo, hicn_face_ip_type, DPO_PROTO_IP4, dpoi_index); + dpo->dpoi_next_node = ~0; + dpo_lock (dpo); + + return HICN_ERROR_NONE; +} + +/** + * @brief Retrieve a face from the ip6 local address and returns its dpo. This + * method adds a lock on the face state. + * + * @param dpo: Result of the lookup. If the face doesn't exist dpo = NULL + * @param is_appface: Boolean that indicates whether the face is an application + * face or not + * @param local_addr: Ip v6 local address of the face + * @param sw_if: software interface id of the face + * + * @result HICN_ERROR_FACE_NOT_FOUND if the face does not exist, otherwise HICN_ERROR_NONE. + */ +always_inline int +hicn_dpo_ip6_lock_from_local (dpo_id_t * dpo, + u8 * is_appface, + const ip6_address_t * local_addr, u32 sw_if) +{ + hicn_face_t *face = + hicn_face_ip6_get (local_addr, sw_if, &hicn_face_ip_local_hashtb); + + if (PREDICT_FALSE (face == NULL)) + return HICN_ERROR_FACE_NOT_FOUND; + + *is_appface = face->shared.flags & HICN_FACE_FLAGS_APPFACE_PROD; + + hicn_face_id_t dpoi_index = hicn_dpoi_get_index (face); + dpo_set (dpo, hicn_face_ip_type, DPO_PROTO_IP6, dpoi_index); + dpo->dpoi_next_node = ~0; + dpo_lock (dpo); + + return HICN_ERROR_NONE; +} + + +/** + * @brief Retrieve, or create if it doesn't exist, a face from the ip6 local + * address and returns its dpo. This method adds a lock on the face state. + * + * @param dpo: Result of the lookup + * @param is_appface: Boolean that indicates whether the face is an application + * face or not + * @param local_addr: Ip v4 local address of the face + * @param remote_addr: Ip v4 remote address of the face + * @param sw_if: software interface id of the face + * @param node_index: vlib edge index to use in the packet processing + */ +always_inline void +hicn_dpo_ip4_add_and_lock_from_remote (dpo_id_t * dpo, + u8 * is_appface, + const ip4_address_t * local_addr, + const ip4_address_t * remote_addr, + u32 sw_if, u32 node_index) +{ + /*All (complete) faces are indexed by remote addess as well */ + hicn_face_t *face = + hicn_face_ip4_get (remote_addr, sw_if, &hicn_face_ip_remote_hashtb); + + if (face == NULL) + { + hicn_face_id_t dpoi_index; + ip46_address_t local_addr46 = to_ip46 (0, (u8 *) local_addr); + ip46_address_t remote_addr46 = to_ip46 (0, (u8 *) remote_addr); + hicn_iface_ip_add (&local_addr46, &remote_addr46, sw_if, &dpoi_index); + + *is_appface = 0; + + dpo_set (dpo, hicn_face_ip_type, DPO_PROTO_IP4, dpoi_index); + dpo->dpoi_next_node = node_index; + dpo_lock (dpo); + + return; + } + + /* Code replicated on purpose */ + *is_appface = face->shared.flags & HICN_FACE_FLAGS_APPFACE_PROD; + + hicn_face_id_t dpoi_index = hicn_dpoi_get_index (face); + dpo_set (dpo, hicn_face_ip_type, DPO_PROTO_IP4, dpoi_index); + dpo->dpoi_next_node = node_index; + dpo_lock (dpo); +} + +/** + * @brief Retrieve, or create if it doesn't exist, a face from the ip6 local + * address and returns its dpo. This method adds a lock on the face state. + * + * @param dpo: Result of the lookup + * @param is_appface: Boolean that indicates whether the face is an application + * face or not + * @param local_addr: Ip v6 local address of the face + * @param remote_addr: Ip v6 remote address of the face + * @param sw_if: software interface id of the face + * @param node_index: vlib edge index to use in the packet processing + */ +always_inline void +hicn_dpo_ip6_add_and_lock_from_remote (dpo_id_t * dpo, + u8 * is_appface, + const ip6_address_t * local_addr, + const ip6_address_t * remote_addr, + u32 sw_if, u32 node_index) +{ + /*All (complete) faces are indexed by remote addess as well */ + hicn_face_t *face = + hicn_face_ip6_get (remote_addr, sw_if, &hicn_face_ip_remote_hashtb); + + if (face == NULL) + { + hicn_face_id_t dpoi_index; + hicn_iface_ip_add ((ip46_address_t *) local_addr, + (ip46_address_t *) remote_addr, sw_if, &dpoi_index); + + *is_appface = 0; + + dpo_set (dpo, hicn_face_ip_type, DPO_PROTO_IP4, dpoi_index); + dpo->dpoi_next_node = node_index; + dpo_lock (dpo); + + return; + } + /* Code replicated on purpose */ + *is_appface = face->shared.flags & HICN_FACE_FLAGS_APPFACE_PROD; + + index_t dpoi_index = hicn_dpoi_get_index (face); + dpo_set (dpo, hicn_face_ip_type, DPO_PROTO_IP6, dpoi_index); + dpo->dpoi_next_node = node_index; + dpo_lock (dpo); +} + + +/** + * @brief Create an ip face and its corresponding dpo. Meant to be used for the + * control plane. + * + * @param dpo: Data plane object that point to the face created. + * @param local_addr: Ip v4 local address of the face + * @param remote_addr: Ip v4 remote address of the face + * @param sw_if: software interface id of the face + * @param adj: Ip adjacency corresponding to the remote address in the face + * @param node_index: vlib edge index to use in the packet processing + * @param flags: Flags of the face + * @param face_id: Identifier for the face (dpoi_index) + * @return HICN_ERROR_FACE_ALREADY_CREATED if the face exists, otherwise HICN_ERROR_NONE + */ +int hicn_dpo_ip4_create (dpo_id_t * dpo, + const ip4_address_t * local_addr, + const ip4_address_t * remote_addr, + u32 sw_if, + adj_index_t adj, + u32 node_index, + hicn_face_flags_t flags, hicn_face_id_t * face_id); + +/** + * @brief Create an ip face and its corresponding dpo. Meant to be used for the + * control plane. + * + * @param dpo: Data plane object that point to the face created. + * @param local_addr: Ip v6 local address of the face + * @param remote_addr: Ip v6 remote address of the face + * @param sw_if: software interface id of the face + * @param adj: Ip adjacency corresponding to the remote address in the face + * @param node_index: vlib edge index to use in the packet processing + * @param flags: Flags of the face + * @param face_id: Identifier for the face (dpoi_index) + * @return HICN_ERROR_FACE_ALREADY_CREATED if the face exists, otherwise HICN_ERROR_NONE + */ +int hicn_dpo_ip6_create (dpo_id_t * dpo, + const ip6_address_t * local_addr, + const ip6_address_t * remote_addr, + u32 sw_if, + adj_index_t adj, + u32 node_index, + hicn_face_flags_t flags, hicn_face_id_t * face_id); + +/** + * @brief Create a dpo from an ip face + * + * @param face Face from which to create the dpo + * @param dpoi_next_node Edge index that connects a node to the iface or face nodes + * @return the dpo + */ +void hicn_dpo_ip_create_from_face (hicn_face_t * face, dpo_id_t * dpo, + u16 dpoi_next_node); + +#endif // __HICN_DPO_IP_H__ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |