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/*
* 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 _FACE_PRODUCER_H_
#define _FACE_PRODUCER_H_
#include "../../cache_policies/cs_policy.h"
#include "../ip/face_ip.h"
/**
* @file
*
* @brief Producer application face.
*
* A producer application face is built upon an ip face and identify a local
* producer application (co-located with the forwarder) that acts as a producer. In the
* current design an application face is either a face towards a consumer face
* or towards a producer. The interface used by the producer application face is
* assumed to be reserved only for hICN traffic (e.g., dedicated memif that
* connects the applictation to the forwarder). Only one application face can be
* assigned to an interface.
*
* To each producer application face it is assigned a portion of the CS. Every
* data arriving to a producer application will be stored in the portion of the
* CS assigned to the face. The eviction policy is defined in the
* face. Available eviction faces are list in the /cache_policy folder.
*
* In the vlib graph a producer application face is directly connected to the
* device-input node (with the node hicn-face-prod-input) and passes every packet to
* the hicn-face-ip node.
*/
/**
* @brief Producer application face state that refer to the hICN producer socket
* created by the application.
*
*/
typedef struct
{
fib_prefix_t prefix;
} hicn_face_prod_state_t;
extern hicn_face_prod_state_t *face_state_vec;
typedef struct __attribute__ ((packed)) hicn_face_prod_t_
{
hicn_face_ip_t ip_face;
hicn_cs_policy_t policy;
hicn_cs_policy_vft_t policy_vft;
} hicn_face_prod_t;
/**
* @brief Add a new producer application face
*
* The method creates the internal ip face and the state specific to the
* producer application face. This method setups a route in the FIB for the
* producer's prefix.
* @param prefix hicn prefix name assigned to the producer face
* @param len length of the prefix
* @param swif interface associated to the face
* @param cs_reserved return the amount of cs assigned to the face
* @param prod_addr address to assign to interface used by the appliction to
* send data to the producer face
*/
int
hicn_face_prod_add (fib_prefix_t * prefix, u32 swif, u32 * cs_reserved,
ip46_address_t * prod_addr, hicn_face_id_t * faceid);
/**
* @brief Delete an existing application face
*
* @param faceid id of the face to remove
*/
int hicn_face_prod_del (hicn_face_id_t faceid);
/**
* @brief Set lru queue size for an app face
*
* @param face_id Id of the producer application face
*/
int hicn_face_prod_set_lru_max (hicn_face_id_t face_id, u32 * requested_size);
/**
* @brief Format an application producer 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_prod (u8 * s, va_list * args);
#endif /* _FACE_PROD_H_ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables: eval: (c-set-style "gnu") End:
*/
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