diff options
Diffstat (limited to 'hicn-plugin/src/strategy.h')
| -rw-r--r-- | hicn-plugin/src/strategy.h | 50 |
1 files changed, 22 insertions, 28 deletions
diff --git a/hicn-plugin/src/strategy.h b/hicn-plugin/src/strategy.h index 19eee72c5..c18ae4eea 100644 --- a/hicn-plugin/src/strategy.h +++ b/hicn-plugin/src/strategy.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2017-2019 Cisco and/or its affiliates. + * Copyright (c) 2017-2020 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: @@ -24,10 +24,13 @@ /** * @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. + * A strategy is defined as a dpo and a set of function (vft) that will be called + * during the packet processing. A strategy is associated to an entry in the fib by + * assigning the corresponding dpo to the fib entry. The dpo points to a hICN dpo + * context (ctx) which contains the information needed by the strategy to compute + * the next hop. Each strategy hash its own dpo type, which means that the dpo_type + * uniquely identify a strategy and its vft. The strategy node will use the dpo_type + * to retrieve the corresponding vft. * Here we provide: * - a template for the callbacks to implement in order to create a new strategy * (hicn_fwd_strategy_t) @@ -36,6 +39,15 @@ * interest and calling hicn_select_next_hop) */ +/* Trace context struct */ +typedef struct +{ + u32 next_index; + u32 sw_if_index; + u8 pkt_type; + dpo_type_t dpo_type; +} hicn_strategy_trace_t; + typedef struct hicn_strategy_vft_s { void (*hicn_receive_data) (index_t dpo_idx, int nh_idx); @@ -43,39 +55,21 @@ typedef struct hicn_strategy_vft_s 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 */ + u8 *(*hicn_format_strategy_trace) (u8 *, hicn_strategy_trace_t *); + u8 *(*hicn_format_strategy) (u8 * s, va_list * ap); + /**< Format an hICN dpo*/ } 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, - dpo_type_t dpo_type, - 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_INTEREST_HITCS, HICN_STRATEGY_NEXT_ERROR_DROP, - HICN_STRATEGY_NEXT_EMPTY, HICN_STRATEGY_N_NEXT, } hicn_strategy_next_t; +extern vlib_node_registration_t hicn_strategy_node; + #endif /* //__HICN_STRATEGY__ */ /* |