/* * Copyright (c) 2015 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. */ /* * ip/ip4_source_check.c: IP v4 check source address (unicast RPF check) * * Copyright (c) 2008 Eliot Dresselhaus * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include <urpf/urpf.h> #include <urpf/urpf_dp.h> static char *ip4_urpf_error_strings[] = { #define _(a, b) b, foreach_urpf_error #undef _ }; VLIB_NODE_FN (ip4_rx_urpf_loose) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return (urpf_inline (vm, node, frame, AF_IP4, VLIB_RX, URPF_MODE_LOOSE)); } VLIB_NODE_FN (ip4_rx_urpf_strict) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return (urpf_inline (vm, node, frame, AF_IP4, VLIB_RX, URPF_MODE_STRICT)); } VLIB_NODE_FN (ip4_tx_urpf_loose) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return (urpf_inline (vm, node, frame, AF_IP4, VLIB_TX, URPF_MODE_LOOSE)); } VLIB_NODE_FN (ip4_tx_urpf_strict) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return (urpf_inline (vm, node, frame, AF_IP4, VLIB_TX, URPF_MODE_STRICT)); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (ip4_rx_urpf_loose) = { .name = "ip4-rx-urpf-loose", .vector_size = sizeof (u32), .n_next_nodes = URPF_N_NEXT, .next_nodes = { [URPF_NEXT_DROP] = "ip4-drop", }, .n_errors = ARRAY_LEN (ip4_urpf_error_strings), .error_strings = ip4_urpf_error_strings, .format_buffer = format_ip4_header, .format_trace = format_urpf_trace, }; VLIB_REGISTER_NODE (ip4_rx_urpf_strict) = { .name = "ip4-rx-urpf-strict", .vector_size = sizeof (u32), .n_next_nodes = URPF_N_NEXT, .next_nodes = { [URPF_NEXT_DROP] = "ip4-drop", }, .n_errors = ARRAY_LEN (ip4_urpf_error_strings), .error_strings = ip4_urpf_error_strings, .format_buffer = format_ip4_header, .format_trace = format_urpf_trace, }; VLIB_REGISTER_NODE (ip4_tx_urpf_loose) = { .name = "ip4-tx-urpf-loose", .vector_size = sizeof (u32), .n_next_nodes = URPF_N_NEXT, .next_nodes = { [URPF_NEXT_DROP] = "ip4-drop", }, .n_errors = ARRAY_LEN (ip4_urpf_error_strings), .error_strings = ip4_urpf_error_strings, .format_buffer = format_ip4_header, .format_trace = format_urpf_trace, }; VLIB_REGISTER_NODE (ip4_tx_urpf_strict) = { .name = "ip4-tx-urpf-strict", .vector_size = sizeof (u32), .n_next_nodes = URPF_N_NEXT, .next_nodes = { [URPF_NEXT_DROP] = "ip4-drop", }, .n_errors = ARRAY_LEN (ip4_urpf_error_strings), .error_strings = ip4_urpf_error_strings, .format_buffer = format_ip4_header, .format_trace = format_urpf_trace, }; VNET_FEATURE_INIT (ip4_rx_urpf_loose_feat, static) = { .arc_name = "ip4-unicast", .node_name = "ip4-rx-urpf-loose", .runs_before = VNET_FEATURES ("ip4-rx-urpf-strict"), }; VNET_FEATURE_INIT (ip4_rx_urpf_strict_feat, static) = { .arc_name = "ip4-unicast", .node_name = "ip4-rx-urpf-strict", .runs_before = VNET_FEATURES ("ip4-policer-classify"), }; VNET_FEATURE_INIT (ip4_tx_urpf_loose_feat, static) = { .arc_name = "ip4-output", .node_name = "ip4-tx-urpf-loose", }; VNET_FEATURE_INIT (ip4_tx_urpf_strict_feat, static) = { .arc_name = "ip4-output", .node_name = "ip4-tx-urpf-strict", }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */