diff options
Diffstat (limited to 'vnet/vnet/fib/fib_entry_src_adj.c')
| -rw-r--r-- | vnet/vnet/fib/fib_entry_src_adj.c | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/vnet/vnet/fib/fib_entry_src_adj.c b/vnet/vnet/fib/fib_entry_src_adj.c deleted file mode 100644 index 64f82a73e07..00000000000 --- a/vnet/vnet/fib/fib_entry_src_adj.c +++ /dev/null @@ -1,207 +0,0 @@ -/* - * Copyright (c) 2016 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 "fib_entry.h" -#include "fib_entry_src.h" -#include "fib_path_list.h" -#include "fib_table.h" -#include "fib_entry_cover.h" -#include "fib_attached_export.h" - -/** - * Source initialisation Function - */ -static void -fib_entry_src_adj_init (fib_entry_src_t *src) -{ - src->adj.fesa_cover = FIB_NODE_INDEX_INVALID; - src->adj.fesa_sibling = FIB_NODE_INDEX_INVALID; -} - -static void -fib_entry_src_adj_path_swap (fib_entry_src_t *src, - const fib_entry_t *entry, - fib_path_list_flags_t pl_flags, - const fib_route_path_t *paths) -{ - src->fes_pl = fib_path_list_create(pl_flags, paths); -} - -static void -fib_entry_src_adj_remove (fib_entry_src_t *src) -{ - src->fes_pl = FIB_NODE_INDEX_INVALID; -} - - -/* - * Source activate. - * Called when the source is teh new longer best source on the entry - */ -static int -fib_entry_src_adj_activate (fib_entry_src_t *src, - const fib_entry_t *fib_entry) -{ - fib_entry_t *cover; - - /* - * find the covering prefix. become a dependent thereof. - * there should always be a cover, though it may be the default route. - */ - src->adj.fesa_cover = fib_table_get_less_specific(fib_entry->fe_fib_index, - &fib_entry->fe_prefix); - - ASSERT(FIB_NODE_INDEX_INVALID != src->adj.fesa_cover); - ASSERT(fib_entry_get_index(fib_entry) != src->adj.fesa_cover); - - cover = fib_entry_get(src->adj.fesa_cover); - - ASSERT(cover != fib_entry); - - src->adj.fesa_sibling = - fib_entry_cover_track(cover, - fib_entry_get_index(fib_entry)); - - /* - * if the ocver is attached then this adj source entry can install, - * via the adj. otherwise install a drop. - * This prevents ARP/ND entries that on interface X that do not belong - * on X's subnet from being added to the FIB. To do so would allow - * nefarious gratuitous ARP requests from attracting traffic to the sender. - * - * and yes, I really do mean attached and not connected. - * this abomination; - * ip route add 10.0.0.0/24 Eth0 - * is attached. and we want adj-fibs to install on Eth0. - */ - return (FIB_ENTRY_FLAG_ATTACHED & fib_entry_get_flags_i(cover)); -} - -/* - * Source Deactivate. - * Called when the source is no longer best source on the entry - */ -static void -fib_entry_src_adj_deactivate (fib_entry_src_t *src, - const fib_entry_t *fib_entry) -{ - fib_entry_t *cover; - - /* - * remove the depednecy on the covering entry - */ - ASSERT(FIB_NODE_INDEX_INVALID != src->adj.fesa_cover); - cover = fib_entry_get(src->adj.fesa_cover); - - fib_entry_cover_untrack(cover, src->adj.fesa_sibling); - - /* - * tell the cover this entry no longer needs exporting - */ - fib_attached_export_covered_removed(cover, fib_entry_get_index(fib_entry)); - - src->adj.fesa_cover = FIB_NODE_INDEX_INVALID; -} - -static u8* -fib_entry_src_adj_format (fib_entry_src_t *src, - u8* s) -{ - return (format(s, "cover:%d", src->adj.fesa_cover)); -} - -static void -fib_entry_src_adj_installed (fib_entry_src_t *src, - const fib_entry_t *fib_entry) -{ - /* - * The adj source now rules! poke our cover to get exported - */ - fib_entry_t *cover; - - ASSERT(FIB_NODE_INDEX_INVALID != src->adj.fesa_cover); - cover = fib_entry_get(src->adj.fesa_cover); - - fib_attached_export_covered_added(cover, - fib_entry_get_index(fib_entry)); -} - -static fib_entry_src_cover_res_t -fib_entry_src_adj_cover_change (fib_entry_src_t *src, - const fib_entry_t *fib_entry) -{ - fib_entry_src_cover_res_t res = { - .install = !0, - .bw_reason = FIB_NODE_BW_REASON_FLAG_NONE, - }; - - fib_entry_src_adj_deactivate(src, fib_entry); - - res.install = fib_entry_src_adj_activate(src, fib_entry); - - if (res.install) { - /* - * ADJ fib can install - */ - res.bw_reason = FIB_NODE_BW_REASON_FLAG_EVALUATE; - } - - return (res); -} - -/* - * fib_entry_src_adj_cover_update - */ -static fib_entry_src_cover_res_t -fib_entry_src_adj_cover_update (fib_entry_src_t *src, - const fib_entry_t *fib_entry) -{ - /* - * the cover has updated, i.e. its forwarding or flags - * have changed. do'nt decativate/activate here, since this - * prefix is updated during the covers walk. - */ - fib_entry_src_cover_res_t res = { - .install = !0, - .bw_reason = FIB_NODE_BW_REASON_FLAG_NONE, - }; - fib_entry_t *cover; - - ASSERT(FIB_NODE_INDEX_INVALID != src->adj.fesa_cover); - - cover = fib_entry_get(src->adj.fesa_cover); - - res.install = (FIB_ENTRY_FLAG_ATTACHED & fib_entry_get_flags_i(cover)); - - return (res); -} - -const static fib_entry_src_vft_t adj_src_vft = { - .fesv_init = fib_entry_src_adj_init, - .fesv_path_swap = fib_entry_src_adj_path_swap, - .fesv_remove = fib_entry_src_adj_remove, - .fesv_activate = fib_entry_src_adj_activate, - .fesv_deactivate = fib_entry_src_adj_deactivate, - .fesv_format = fib_entry_src_adj_format, - .fesv_installed = fib_entry_src_adj_installed, - .fesv_cover_change = fib_entry_src_adj_cover_change, - .fesv_cover_update = fib_entry_src_adj_cover_update, -}; - -void -fib_entry_src_adj_register (void) -{ - fib_entry_src_register(FIB_SOURCE_ADJ, &adj_src_vft); -} |