/* * 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. */ /** * @brief * The data-path object representing dropping the packet */ #include <vnet/dpo/dpo.h> static dpo_id_t drop_dpos[DPO_PROTO_NUM]; const dpo_id_t * drop_dpo_get (dpo_proto_t proto) { dpo_set(&drop_dpos[proto], DPO_DROP, proto, proto); return (&drop_dpos[proto]); } int dpo_is_drop (const dpo_id_t *dpo) { return (dpo->dpoi_type == DPO_DROP); } static void drop_dpo_lock (dpo_id_t *dpo) { /* * not maintaining a lock count on the drop * more trouble than it's worth. * There always needs to be one around. no point it managing its lifetime */ } static void drop_dpo_unlock (dpo_id_t *dpo) { } static u8* format_drop_dpo (u8 *s, va_list *ap) { CLIB_UNUSED(index_t index) = va_arg(*ap, index_t); CLIB_UNUSED(u32 indent) = va_arg(*ap, u32); return (format(s, "dpo-drop %U", format_dpo_proto, index)); } const static dpo_vft_t drop_vft = { .dv_lock = drop_dpo_lock, .dv_unlock = drop_dpo_unlock, .dv_format = format_drop_dpo, }; /** * @brief The per-protocol VLIB graph nodes that are assigned to a drop * object. * * this means that these graph nodes are ones from which a drop is the * parent object in the DPO-graph. */ const static char* const drop_ip4_nodes[] = { "ip4-drop", NULL, }; const static char* const drop_ip6_nodes[] = { "ip6-drop", NULL, }; const static char* const drop_mpls_nodes[] = { "mpls-drop", NULL, }; const static char* const drop_ethernet_nodes[] = { "error-drop", NULL, }; const static char* const drop_nsh_nodes[] = { "error-drop", NULL, }; const static char* const drop_bier_nodes[] = { "bier-drop", NULL, }; const static char* const * const drop_nodes[DPO_PROTO_NUM] = { [DPO_PROTO_IP4] = drop_ip4_nodes, [DPO_PROTO_IP6] = drop_ip6_nodes, [DPO_PROTO_MPLS] = drop_mpls_nodes, [DPO_PROTO_ETHERNET] = drop_ethernet_nodes, [DPO_PROTO_NSH] = drop_nsh_nodes, [DPO_PROTO_BIER] = drop_bier_nodes, }; void drop_dpo_module_init (void) { dpo_register(DPO_DROP, &drop_vft, drop_nodes); }