2 * Copyright (c) 2018 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <vnet/qos/qos_record.h>
17 #include <vnet/ip/ip.h>
18 #include <vnet/ip/ip6_to_ip4.h>
19 #include <vnet/feature/feature.h>
20 #include <vnet/qos/qos_types.h>
21 #include <vnet/l2/l2_input.h>
22 #include <vnet/l2/feat_bitmap.h>
25 * Per-interface, per-protocol vector of feature on/off configurations
27 u8 *qos_record_configs[QOS_N_SOURCES];
28 u32 l2_qos_input_next[QOS_N_SOURCES][32];
31 qos_record_feature_config (u32 sw_if_index,
32 qos_source_t input_source, u8 enable)
37 vnet_feature_enable_disable ("ip6-unicast", "ip6-qos-record",
38 sw_if_index, enable, NULL, 0);
39 vnet_feature_enable_disable ("ip6-multicast", "ip6-qos-record",
40 sw_if_index, enable, NULL, 0);
41 vnet_feature_enable_disable ("ip4-unicast", "ip4-qos-record",
42 sw_if_index, enable, NULL, 0);
43 vnet_feature_enable_disable ("ip4-multicast", "ip4-qos-record",
44 sw_if_index, enable, NULL, 0);
45 l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_L2_IP_QOS_RECORD,
49 vnet_feature_enable_disable ("mpls-input", "mpls-qos-record",
50 sw_if_index, enable, NULL, 0);
53 vnet_feature_enable_disable ("ip6-unicast", "vlan-ip6-qos-record",
54 sw_if_index, enable, NULL, 0);
55 vnet_feature_enable_disable ("ip6-multicast", "vlan-ip6-qos-record",
56 sw_if_index, enable, NULL, 0);
57 vnet_feature_enable_disable ("ip4-unicast", "vlan-ip4-qos-record",
58 sw_if_index, enable, NULL, 0);
59 vnet_feature_enable_disable ("ip4-multicast", "vlan-ip4-qos-record",
60 sw_if_index, enable, NULL, 0);
61 vnet_feature_enable_disable ("mpls-input", "vlan-mpls-qos-record",
62 sw_if_index, enable, NULL, 0);
65 /* not a valid option for recording */
71 qos_record_enable (u32 sw_if_index, qos_source_t input_source)
73 vec_validate (qos_record_configs[input_source], sw_if_index);
75 if (0 == qos_record_configs[input_source][sw_if_index])
77 qos_record_feature_config (sw_if_index, input_source, 1);
80 qos_record_configs[input_source][sw_if_index]++;
85 qos_record_disable (u32 sw_if_index, qos_source_t input_source)
87 if (vec_len (qos_record_configs[input_source]) <= sw_if_index)
88 return VNET_API_ERROR_NO_MATCHING_INTERFACE;
90 if (0 == qos_record_configs[input_source][sw_if_index])
91 return VNET_API_ERROR_VALUE_EXIST;
93 qos_record_configs[input_source][sw_if_index]--;
95 if (0 == qos_record_configs[input_source][sw_if_index])
97 qos_record_feature_config (sw_if_index, input_source, 0);
104 * Disable recording feature for all protocols when the interface
107 static clib_error_t *
108 qos_record_ip_interface_add_del (vnet_main_t * vnm,
109 u32 sw_if_index, u32 is_add)
115 FOR_EACH_QOS_SOURCE (qs)
117 while (qos_record_disable (sw_if_index, qs) == 0);
124 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (qos_record_ip_interface_add_del);
127 l2_ip_qos_init (vlib_main_t * vm)
130 vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "l2-ip-qos-record");
132 /* Initialize the feature next-node indexes */
133 FOR_EACH_QOS_SOURCE (qs)
134 feat_bitmap_init_next_nodes (vm,
137 l2input_get_feat_names (),
138 l2_qos_input_next[qs]);
142 VLIB_INIT_FUNCTION (l2_ip_qos_init);
144 static clib_error_t *
145 qos_record_cli (vlib_main_t * vm,
146 unformat_input_t * input, vlib_cli_command_t * cmd)
148 vnet_main_t *vnm = vnet_get_main ();
156 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
158 if (unformat (input, "%U", unformat_vnet_sw_interface,
161 else if (unformat (input, "%U", unformat_qos_source, &qs))
163 else if (unformat (input, "enable"))
165 else if (unformat (input, "disable"))
171 if (~0 == sw_if_index)
172 return clib_error_return (0, "interface must be specified");
174 return clib_error_return (0, "input location must be specified");
177 qos_record_enable (sw_if_index, qs);
179 qos_record_disable (sw_if_index, qs);
185 * Enable QoS bit recording on an interface using the packet's input DSCP bits
186 * Which input QoS bits to use are either; IP, MPLS or VLAN. If more than
187 * one protocol is chosen (which is foolish) the higher layers override the
191 * @cliexcmd{qos record ip GigEthernet0/1/0}
194 VLIB_CLI_COMMAND (qos_record_command, static) = {
195 .path = "qos record",
196 .short_help = "qos record <record-source> <INTERFACE> [disable]",
197 .function = qos_record_cli,
204 * fd.io coding-style-patch-verification: ON
207 * eval: (c-set-style "gnu")