diff options
Diffstat (limited to 'hicn-plugin/src/host_stack/route.c')
| -rw-r--r-- | hicn-plugin/src/host_stack/route.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/hicn-plugin/src/host_stack/route.c b/hicn-plugin/src/host_stack/route.c deleted file mode 100644 index 5b42bea26..000000000 --- a/hicn-plugin/src/host_stack/route.c +++ /dev/null @@ -1,178 +0,0 @@ -/* - * Copyright (c) 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 "host_stack.h" -#include "route.h" - -#include <vnet/fib/fib_entry.h> -#include <vnet/fib/fib_table.h> -#include <vnet/ip/ip6_packet.h> -#include <vnet/dpo/dpo.h> -#include <vnet/dpo/load_balance.h> -#include <vlib/global_funcs.h> -#include <vnet/dpo/drop_dpo.h> - -#define FIB_SOURCE_HICN_HS 0x04 //Right after the FIB_SOURCE_INTERFACE priority -#define HICN_HS_FIB_TABLE 0 - -fib_source_t hicn_hs_fib_src; - -void -hicn_hs_route_init () -{ - hicn_hs_fib_src = fib_source_allocate ("hicn_hs", FIB_SOURCE_HICN_HS, FIB_SOURCE_BH_API); -} - -always_inline int -hicn_route_get_dpo (const fib_prefix_t * prefix, - const dpo_id_t ** hicn_dpo, u32 * fib_index) -{ - //fib_prefix_t fib_pfx; - const dpo_id_t *load_balance_dpo_id; - const dpo_id_t *former_dpo_id; - int found = 0, ret = HICN_HS_ERROR_ROUTE_NOT_FOUND; - fib_node_index_t fib_entry_index; - - /* Check if the route already exist in the fib */ - /* - * ASSUMPTION: we use table 0 which is the default table and it is - * already existing and locked - */ - *fib_index = fib_table_find_or_create_and_lock (prefix->fp_proto, - HICN_HS_FIB_TABLE, - hicn_hs_fib_src); - fib_entry_index = fib_table_lookup_exact_match (*fib_index, prefix); - - if (fib_entry_index != FIB_NODE_INDEX_INVALID) - { - /* Route already existing. We need to update the dpo. */ - load_balance_dpo_id = - fib_entry_contribute_ip_forwarding (fib_entry_index); - - /* The dpo is not a load balance dpo as expected */ - if (load_balance_dpo_id->dpoi_type != DPO_LOAD_BALANCE) - ret = HICN_HS_ERROR_ROUTE_NO_LB_DPO; - else - { - /* former_dpo_id is a load_balance dpo */ - load_balance_t *lb = - load_balance_get (load_balance_dpo_id->dpoi_index); - - /* FIB entry exists but there is no hicn_hs dpo. */ - ret = HICN_HS_ERROR_ROUTE_DPO_NO_HICN; - for (int i = 0; i < lb->lb_n_buckets && !found; i++) - { - former_dpo_id = load_balance_get_bucket_i (lb, i); - - if (dpo_is_hicn_hs (former_dpo_id)) - { - *hicn_dpo = former_dpo_id; - ret = HICN_HS_ERROR_NONE; - found = 1; - } - } - } - } - /* - * Remove the lock from the table. We keep one lock per route, not - * per dpo - */ - fib_table_unlock (*fib_index, prefix->fp_proto, hicn_hs_fib_src); - - return ret; -} - -/* Add a new route for a name prefix */ -always_inline -int hicn_hs_route_add_flags (const fib_prefix_t * prefix, const dpo_id_t *dpo, fib_entry_flag_t flags) -{ - CLIB_UNUSED(vlib_main_t *vm) = vlib_get_main (); - int ret = HICN_HS_ERROR_NONE; - u32 fib_index; - const dpo_id_t *_dpo; - - ret = hicn_route_get_dpo (prefix, &_dpo, &fib_index); - - if (ret == HICN_HS_ERROR_ROUTE_NOT_FOUND) - { - /* Here is where we create the "via" like route */ - /* - * For the moment we use the global one the prefix you want - * to match Neale suggested -- FIB_SOURCE_HICN the client - * that is adding them -- no easy explanation at this time… - */ - fib_node_index_t new_fib_node_index = - fib_table_entry_special_dpo_add (fib_index, - prefix, - hicn_hs_fib_src, - flags, - dpo); - - /* We added a route, therefore add one lock to the table */ - fib_table_lock (fib_index, prefix->fp_proto, hicn_hs_fib_src); - - ret = - (new_fib_node_index != - FIB_NODE_INDEX_INVALID) ? HICN_HS_ERROR_NONE : - HICN_HS_ERROR_ROUTE_NO_INSERT; - } - - return ret; -} - -int -hicn_hs_route_add (const fib_prefix_t * prefix, const dpo_id_t *dpo) -{ - return hicn_hs_route_add_flags(prefix, dpo, (FIB_ENTRY_FLAG_EXCLUSIVE | - FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT)); -} - -clib_error_t * -hicn_hs_set_local_prefix(const fib_prefix_t * prefix) -{ - clib_error_t * ret = 0; - int rv; - const dpo_id_t *drop_dpo = drop_dpo_get(prefix->fp_proto == FIB_PROTOCOL_IP4 ? DPO_PROTO_IP4 : DPO_PROTO_IP6); - rv = hicn_hs_route_add_flags(prefix, drop_dpo, (FIB_ENTRY_FLAG_EXCLUSIVE | FIB_ENTRY_FLAG_LOCAL | FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT)); - - if (rv) - ret = clib_error_return (0, "Error: %s", hicn_hs_error_strings[rv]); - - return ret; -} - -int -hicn_route_del (fib_prefix_t * prefix) -{ - const dpo_id_t *hicn_dpo_id; - int ret = HICN_HS_ERROR_NONE; - u32 fib_index; - - /* Remove the fib entry only if the dpo is of type hicn */ - ret = hicn_route_get_dpo (prefix, &hicn_dpo_id, &fib_index); - - if (ret == HICN_HS_ERROR_NONE) - { - fib_table_entry_special_remove (HICN_HS_FIB_TABLE, prefix, hicn_hs_fib_src); - - /* - * Remove the lock from the table. We keep one lock per route - */ - fib_table_unlock (fib_index, prefix->fp_proto, hicn_hs_fib_src); - } - - // Remember to remove the lock from the table when removing the entry - return ret; -}
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