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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 __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 hicnb_flags: Flags that indicate 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 * hicnb_flags,
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;
*hicnb_flags = HICN_BUFFER_FLAGS_DEFAULT;
*hicnb_flags |=
(face->shared.flags & HICN_FACE_FLAGS_APPFACE_PROD) >>
HICN_FACE_FLAGS_APPFACE_PROD_BIT;
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 hicnb_flags: Flags that indicate 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 * hicnb_flags,
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;
*hicnb_flags = HICN_BUFFER_FLAGS_DEFAULT;
*hicnb_flags |=
(face->shared.flags & HICN_FACE_FLAGS_APPFACE_PROD) >>
HICN_FACE_FLAGS_APPFACE_PROD_BIT;
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 hicnb_flags: Flags that indicate 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 * hicnb_flags,
const ip4_address_t * local_addr,
const ip4_address_t * remote_addr,
u32 sw_if, u32 node_index)
{
dpo->dpoi_type = DPO_FIRST;
dpo->dpoi_proto = DPO_PROTO_NONE;
dpo->dpoi_index = INDEX_INVALID;
dpo->dpoi_next_node = 0;
/*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);
*hicnb_flags = HICN_BUFFER_FLAGS_DEFAULT;
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 */
*hicnb_flags = HICN_BUFFER_FLAGS_DEFAULT;
*hicnb_flags |=
(face->shared.flags & HICN_FACE_FLAGS_APPFACE_PROD) >>
HICN_FACE_FLAGS_APPFACE_PROD_BIT;
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 hicnb_flags: Flags that indicate 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 * hicnb_flags,
const ip6_address_t * local_addr,
const ip6_address_t * remote_addr,
u32 sw_if, u32 node_index)
{
dpo->dpoi_type = DPO_FIRST;
dpo->dpoi_proto = DPO_PROTO_NONE;
dpo->dpoi_index = INDEX_INVALID;
dpo->dpoi_next_node = 0;
/*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);
*hicnb_flags = HICN_BUFFER_FLAGS_DEFAULT;
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 */
*hicnb_flags = HICN_BUFFER_FLAGS_DEFAULT;
*hicnb_flags |=
(face->shared.flags & HICN_FACE_FLAGS_APPFACE_PROD) >>
HICN_FACE_FLAGS_APPFACE_PROD_BIT;
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:
*/
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