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 qos_record_walk (qos_record_walk_cb_t fn, void *c)
108 FOR_EACH_QOS_SOURCE (qs)
112 vec_foreach_index (sw_if_index, qos_record_configs[qs])
114 if (0 != qos_record_configs[qs][sw_if_index])
115 fn (sw_if_index, qs, c);
121 * Disable recording feature for all protocols when the interface
124 static clib_error_t *
125 qos_record_ip_interface_add_del (vnet_main_t * vnm,
126 u32 sw_if_index, u32 is_add)
132 FOR_EACH_QOS_SOURCE (qs)
134 while (qos_record_disable (sw_if_index, qs) == 0);
141 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (qos_record_ip_interface_add_del);
144 qos_record_init (vlib_main_t * vm)
147 vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "l2-ip-qos-record");
149 /* Initialize the feature next-node indexes */
150 FOR_EACH_QOS_SOURCE (qs)
151 feat_bitmap_init_next_nodes (vm,
154 l2input_get_feat_names (),
155 l2_qos_input_next[qs]);
159 VLIB_INIT_FUNCTION (qos_record_init);
161 static clib_error_t *
162 qos_record_cli (vlib_main_t * vm,
163 unformat_input_t * input, vlib_cli_command_t * cmd)
165 vnet_main_t *vnm = vnet_get_main ();
173 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
175 if (unformat (input, "%U", unformat_vnet_sw_interface,
178 else if (unformat (input, "%U", unformat_qos_source, &qs))
180 else if (unformat (input, "enable"))
182 else if (unformat (input, "disable"))
188 if (~0 == sw_if_index)
189 return clib_error_return (0, "interface must be specified");
191 return clib_error_return (0, "input location must be specified");
194 qos_record_enable (sw_if_index, qs);
196 qos_record_disable (sw_if_index, qs);
202 * Enable QoS bit recording on an interface using the packet's input DSCP bits
203 * Which input QoS bits to use are either; IP, MPLS or VLAN. If more than
204 * one protocol is chosen (which is foolish) the higher layers override the
208 * @cliexcmd{qos record ip GigEthernet0/1/0}
211 VLIB_CLI_COMMAND (qos_record_command, static) = {
212 .path = "qos record",
213 .short_help = "qos record <record-source> <INTERFACE> [disable]",
214 .function = qos_record_cli,
220 qos_record_show_one_interface (vlib_main_t * vm, u32 sw_if_index)
222 u8 n_cfgs[QOS_N_SOURCES] = { };
228 FOR_EACH_QOS_SOURCE (qs)
230 if (vec_len (qos_record_configs[qs]) <= sw_if_index)
232 if (0 != (n_cfgs[qs] = qos_record_configs[qs][sw_if_index]))
238 vlib_cli_output (vm, " %U:", format_vnet_sw_if_index_name,
239 vnet_get_main (), sw_if_index);
241 FOR_EACH_QOS_SOURCE (qs)
244 vlib_cli_output (vm, " %U", format_qos_source, qs);
249 static clib_error_t *
250 qos_record_show (vlib_main_t * vm,
251 unformat_input_t * input, vlib_cli_command_t * cmd)
253 vnet_main_t *vnm = vnet_get_main ();
259 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
261 if (unformat (input, "%U", unformat_vnet_sw_interface,
266 if (~0 == sw_if_index)
270 FOR_EACH_QOS_SOURCE (qs)
272 n_ints = clib_max (n_ints, vec_len (qos_record_configs[qs]));
275 for (ii = 0; ii < n_ints; ii++)
277 qos_record_show_one_interface (vm, ii);
281 qos_record_show_one_interface (vm, sw_if_index);
287 * Show Egress Qos Maps
290 * @cliexcmd{show qos egress map}
293 VLIB_CLI_COMMAND (qos_record_show_command, static) = {
294 .path = "show qos record",
295 .short_help = "show qos record [interface]",
296 .function = qos_record_show,
302 * fd.io coding-style-patch-verification: ON
305 * eval: (c-set-style "gnu")