From 44db1caefbf5067b0cf0073299c9f21265331412 Mon Sep 17 00:00:00 2001 From: Neale Ranns Date: Thu, 24 Dec 2020 09:16:09 +0000 Subject: linux-cp: Linux Interface Mirroring for Control Plane Integration Type: feature please see FEATURE.yaml for details. Signed-off-by: Neale Ranns Signed-off-by: Matthew Smith Signed-off-by: Jon Loeliger Signed-off-by: Pim van Pelt Change-Id: I04a45c15c0838906aa787e06660fa29f39f755fa --- src/plugins/linux-cp/lcp_adj.c | 151 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 151 insertions(+) create mode 100644 src/plugins/linux-cp/lcp_adj.c (limited to 'src/plugins/linux-cp/lcp_adj.c') diff --git a/src/plugins/linux-cp/lcp_adj.c b/src/plugins/linux-cp/lcp_adj.c new file mode 100644 index 00000000000..9a08591a0c1 --- /dev/null +++ b/src/plugins/linux-cp/lcp_adj.c @@ -0,0 +1,151 @@ +/* + * 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 +#include + +#include +#include + +static adj_delegate_type_t adj_type; + +/** + * The table of adjacencies indexed by the rewrite string + */ +BVT (clib_bihash) lcp_adj_tbl; + +static_always_inline void +lcp_adj_mk_key_adj (const ip_adjacency_t *adj, lcp_adj_key_t *key) +{ + lcp_adj_mk_key (adj->rewrite_header.data, adj->rewrite_header.data_bytes, + adj->rewrite_header.sw_if_index, key); +} + +static u8 * +lcp_adj_delegate_format (const adj_delegate_t *aed, u8 *s) +{ + return (format (s, "lcp")); +} + +static void +lcp_adj_delegate_adj_deleted (adj_delegate_t *aed) +{ + ip_adjacency_t *adj; + lcp_adj_kv_t kv; + + adj = adj_get (aed->ad_adj_index); + + lcp_adj_mk_key_adj (adj, &kv.k); + + BV (clib_bihash_add_del) (&lcp_adj_tbl, &kv.kv, 0); +} + +static void +lcp_adj_delegate_adj_modified (adj_delegate_t *aed) +{ + ip_adjacency_t *adj; + lcp_adj_kv_t kv; + + adj = adj_get (aed->ad_adj_index); + + if (IP_LOOKUP_NEXT_REWRITE != adj->lookup_next_index) + return; + + lcp_adj_mk_key_adj (adj, &kv.k); + kv.v = aed->ad_adj_index; + + BV (clib_bihash_add_del) (&lcp_adj_tbl, &kv.kv, 1); +} + +static void +lcp_adj_delegate_adj_created (adj_index_t ai) +{ + ip_adjacency_t *adj; + lcp_adj_kv_t kv; + + adj = adj_get (ai); + + if (IP_LOOKUP_NEXT_REWRITE != adj->lookup_next_index) + return; + + lcp_adj_mk_key_adj (adj, &kv.k); + kv.v = ai; + + BV (clib_bihash_add_del) (&lcp_adj_tbl, &kv.kv, 1); +} + +u8 * +format_lcp_adj_kvp (u8 *s, va_list *args) +{ + BVT (clib_bihash_kv) *kv = va_arg (*args, BVT (clib_bihash_kv) *); + CLIB_UNUSED (int verbose) = va_arg (*args, int); + lcp_adj_kv_t *akv = (lcp_adj_kv_t *) kv; + + s = format (s, " %U:%U\n %U", format_vnet_sw_if_index_name, + vnet_get_main (), akv->k.sw_if_index, format_hex_bytes, + akv->k.rewrite, 18, format_adj_nbr, akv->v, 4); + + return (s); +} + +static clib_error_t * +lcp_adj_show_cmd (vlib_main_t *vm, unformat_input_t *input, + vlib_cli_command_t *cmd) +{ + u8 verbose = 0; + + if (unformat (input, "verbose")) + verbose = 1; + + vlib_cli_output (vm, "Linux-CP Adjs:\n%U", BV (format_bihash), &lcp_adj_tbl, + verbose); + + return 0; +} + +VLIB_CLI_COMMAND (lcp_itf_pair_show_cmd_node, static) = { + .path = "show lcp adj", + .function = lcp_adj_show_cmd, + .short_help = "show lcp adj", + .is_mp_safe = 1, +}; + +const adj_delegate_vft_t lcp_adj_vft = { + .adv_format = lcp_adj_delegate_format, + .adv_adj_deleted = lcp_adj_delegate_adj_deleted, + .adv_adj_modified = lcp_adj_delegate_adj_modified, + .adv_adj_created = lcp_adj_delegate_adj_created, +}; + +static clib_error_t * +lcp_adj_init (vlib_main_t *vm) +{ + adj_type = adj_delegate_register_new_type (&lcp_adj_vft); + + BV (clib_bihash_init) (&lcp_adj_tbl, "linux-cp ADJ table", 1024, 1 << 24); + BV (clib_bihash_set_kvp_format_fn) (&lcp_adj_tbl, format_lcp_adj_kvp); + + return (NULL); +} + +VLIB_INIT_FUNCTION (lcp_adj_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg