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/strategy.h | 82 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100755 hicn-plugin/src/strategy.h (limited to 'hicn-plugin/src/strategy.h') diff --git a/hicn-plugin/src/strategy.h b/hicn-plugin/src/strategy.h new file mode 100755 index 000000000..6b06a6ce9 --- /dev/null +++ b/hicn-plugin/src/strategy.h @@ -0,0 +1,82 @@ +/* + * 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_STRATEGY__ +#define __HICN_STRATEGY__ + +#include "hicn.h" +#include "hashtb.h" +#include "mgmt.h" +#include "faces/face.h" + +/** + * @File + * + * A strategy is defined as a vpp node and a set of function that will be called + * during the packet processing. Having one vpp node per strategy allows to + * easily process multiple interests in the same node (x2 or x4) and call the + * same function for choosing the next hop. + * Here we provide: + * - a template for the callbacks to implement in order to create a new strategy + * (hicn_fwd_strategy_t) + * - the base structure for a strategy node + * (list of next vpp nodes, errors, tracing and the main function processing an + * interest and calling hicn_select_next_hop) + */ + +typedef struct hicn_strategy_vft_s +{ + void (*hicn_receive_data) (index_t dpo_idx, int nh_idx); + void (*hicn_on_interest_timeout) (index_t dpo_idx); + void (*hicn_add_interest) (index_t dpo_idx, hicn_hash_entry_t * pit_entry); + u32 (*hicn_select_next_hop) (index_t dpo_idx, int *nh_idx, + dpo_id_t ** outface); + u32 (*get_strategy_node_index) (void); + /**< Return the vlib node index implementing the strategy */ +} hicn_strategy_vft_t; + +hicn_face_vft_t *hicn_strategy_get_face_vft (u16 index); + +/* Strategy node API */ +/* Basic interest processing function. To be called in all the strategy nodes */ +uword +hicn_forward_interest_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame, + hicn_strategy_vft_t * strategy, + vlib_node_registration_t * hicn_strategy_node); + +/* Trace context struct */ +typedef struct +{ + u32 next_index; + u32 sw_if_index; + u8 pkt_type; +} hicn_strategy_trace_t; + +typedef enum +{ + HICN_STRATEGY_NEXT_INTEREST_HITPIT, + HICN_STRATEGY_NEXT_ERROR_DROP, + HICN_STRATEGY_N_NEXT, +} hicn_strategy_next_t; + +#endif /* //__HICN_STRATEGY__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: eval: (c-set-style "gnu") End: + */ -- cgit 1.2.3-korg