diff options
Diffstat (limited to 'hicn-plugin/src/strategies/dpo_rr.c')
| -rw-r--r-- | hicn-plugin/src/strategies/dpo_rr.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/hicn-plugin/src/strategies/dpo_rr.c b/hicn-plugin/src/strategies/dpo_rr.c new file mode 100644 index 000000000..adb7e1025 --- /dev/null +++ b/hicn-plugin/src/strategies/dpo_rr.c @@ -0,0 +1,160 @@ +/* + * 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: + * + * 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. + */ + +#include "dpo_rr.h" +#include "strategy_rr.h" +#include "../strategy_dpo_manager.h" +#include "../strategy_dpo_ctx.h" + +/** + * @brief DPO type value for the rr_strategy + */ +static dpo_type_t hicn_dpo_type_rr; + +static const hicn_dpo_vft_t hicn_dpo_rr_vft = { + .hicn_dpo_is_type = &hicn_dpo_is_type_strategy_rr, + .hicn_dpo_get_type = &hicn_dpo_strategy_rr_get_type, + .hicn_dpo_module_init = &hicn_dpo_strategy_rr_module_init, + .hicn_dpo_create = &hicn_strategy_rr_ctx_create, + .hicn_dpo_add_update_nh = &hicn_strategy_rr_ctx_add_nh, + .hicn_dpo_del_nh = &hicn_strategy_rr_ctx_del_nh, + .hicn_dpo_format = &hicn_strategy_rr_format_ctx +}; + +int +hicn_dpo_is_type_strategy_rr (const dpo_id_t * dpo) +{ + return dpo->dpoi_type == hicn_dpo_type_rr; +} + +void +hicn_dpo_strategy_rr_module_init (void) +{ + /* + * Register our type of dpo + */ + hicn_dpo_type_rr = + hicn_dpo_register_new_type (hicn_nodes_strategy, &hicn_dpo_rr_vft, + hicn_rr_strategy_get_vft (), + &dpo_strategy_rr_ctx_vft); +} + +dpo_type_t +hicn_dpo_strategy_rr_get_type (void) +{ + return hicn_dpo_type_rr; +} + +////////////////////////////////////////////////////////////////////////////////////////////////// + + +u8 * +hicn_strategy_rr_format_ctx (u8 * s, int n, ...) +{ + va_list args; + va_start (args, n); + s = format_hicn_strategy_rr_ctx (s, &args); + return s; +} + +u8 * +format_hicn_strategy_rr_ctx (u8 * s, va_list * ap) +{ + int i = 0; + index_t index = va_arg (*ap, index_t); + hicn_dpo_ctx_t *dpo_ctx = NULL; + hicn_strategy_rr_ctx_t *rr_dpo_ctx = NULL; + u32 indent = va_arg (*ap, u32); + + dpo_ctx = hicn_strategy_dpo_ctx_get (index); + if (dpo_ctx == NULL) + return s; + + rr_dpo_ctx = (hicn_strategy_rr_ctx_t *) dpo_ctx->data; + + s = + format (s, "hicn-rr, next hop Face %d", + dpo_ctx->next_hops[rr_dpo_ctx->current_nhop]); + + for (i = 0; i < HICN_PARAM_FIB_ENTRY_NHOPS_MAX; i++) + { + u8 *buf = NULL; + if (i < dpo_ctx->entry_count) + buf = format (NULL, "FIB"); + else if (i >= + HICN_PARAM_FIB_ENTRY_NHOPS_MAX - dpo_ctx->tfib_entry_count) + buf = format (NULL, "TFIB"); + else + continue; + + s = format (s, "\n"); + s = + format (s, "%U ", format_hicn_face, dpo_ctx->next_hops[i], + indent); + s = format (s, " %s", buf); + } + + return (s); +} + +void +hicn_strategy_rr_ctx_create (fib_protocol_t proto, const hicn_face_id_t * next_hop, + int nh_len, index_t * dpo_idx) +{ + hicn_strategy_rr_ctx_t *hicn_strategy_rr_ctx; + hicn_dpo_ctx_t *hicn_strategy_ctx; + + /* Allocate a hicn_dpo_ctx on the vpp pool and initialize it */ + hicn_strategy_ctx = hicn_strategy_dpo_ctx_alloc (); + hicn_strategy_rr_ctx = (hicn_strategy_rr_ctx_t *) hicn_strategy_ctx->data; + + *dpo_idx = hicn_strategy_dpo_ctx_get_index (hicn_strategy_ctx); + + init_dpo_ctx (hicn_strategy_ctx, next_hop, nh_len, hicn_dpo_type_rr, proto); + + hicn_strategy_rr_ctx->current_nhop = 0; +} + +int +hicn_strategy_rr_ctx_add_nh (hicn_face_id_t nh, index_t dpo_idx) +{ + hicn_dpo_ctx_t *hicn_strategy_dpo_ctx = hicn_strategy_dpo_ctx_get (dpo_idx); + u8 pos = 0; + + if (hicn_strategy_dpo_ctx == NULL) + { + return HICN_ERROR_STRATEGY_NOT_FOUND; + } + + hicn_strategy_dpo_ctx_add_nh (nh, hicn_strategy_dpo_ctx, &pos); + //nothing else to initialize in this strategy + return HICN_ERROR_NONE; +} + +int +hicn_strategy_rr_ctx_del_nh (hicn_face_id_t face_id, index_t dpo_idx) +{ + hicn_dpo_ctx_t *hicn_strategy_dpo_ctx = hicn_strategy_dpo_ctx_get (dpo_idx); + //No need to change the current_nhop. It will be updated at the next selection. + return hicn_strategy_dpo_ctx_del_nh (face_id, hicn_strategy_dpo_ctx); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |