2 * Copyright (c) 2016 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/feature/feature.h>
18 vnet_feature_main_t feature_main;
21 vnet_feature_init (vlib_main_t * vm)
23 vnet_feature_main_t *fm = &feature_main;
24 vnet_feature_registration_t *freg;
25 vnet_feature_arc_registration_t *areg;
28 fm->arc_index_by_name = hash_create_string (0, sizeof (uword));
31 /* process feature arc registrations */
36 areg->feature_arc_index = arc_index;
37 hash_set_mem (fm->arc_index_by_name, areg->arc_name,
38 pointer_to_uword (areg));
40 /* process start nodes */
41 while ((s = areg->start_nodes[i]))
45 areg->n_start_nodes = i;
52 vec_validate (fm->next_feature_by_arc, arc_index - 1);
53 vec_validate (fm->feature_nodes, arc_index - 1);
54 vec_validate (fm->feature_config_mains, arc_index - 1);
55 vec_validate (fm->next_feature_by_name, arc_index - 1);
56 vec_validate (fm->sw_if_index_has_features, arc_index - 1);
57 vec_validate (fm->feature_count_by_sw_if_index, arc_index - 1);
59 freg = fm->next_feature;
62 uword *p = hash_get_mem (fm->arc_index_by_name, freg->arc_name);
64 return clib_error_return (0, "Unknown feature arc '%s'",
67 areg = uword_to_pointer (p[0], vnet_feature_arc_registration_t *);
68 arc_index = areg->feature_arc_index;
70 vec_add1 (fm->next_feature_by_arc[arc_index], *freg);
79 vnet_feature_config_main_t *cm;
80 vnet_config_main_t *vcm;
82 arc_index = areg->feature_arc_index;
83 cm = &fm->feature_config_mains[arc_index];
84 vcm = &cm->config_main;
85 if ((error = vnet_feature_arc_init (vm, vcm,
88 fm->next_feature_by_arc[arc_index],
89 &fm->feature_nodes[arc_index])))
94 fm->next_feature_by_name[arc_index] =
95 hash_create_string (0, sizeof (uword));
96 freg = fm->next_feature_by_arc[arc_index];
100 hash_set_mem (fm->next_feature_by_name[arc_index],
101 freg->node_name, pointer_to_uword (freg));
110 fm->device_input_feature_arc_index =
111 vnet_get_feature_arc_index ("device-input");
115 VLIB_INIT_FUNCTION (vnet_feature_init);
118 vnet_config_update_feature_count (vnet_feature_main_t * fm, u8 arc,
119 u32 sw_if_index, int is_add)
123 vec_validate (fm->feature_count_by_sw_if_index[arc], sw_if_index);
125 fm->feature_count_by_sw_if_index[arc][sw_if_index] += is_add ? 1 : -1;
127 ASSERT (fm->feature_count_by_sw_if_index[arc][sw_if_index] >= 0);
129 bit_value = fm->feature_count_by_sw_if_index[arc][sw_if_index] > 0;
131 fm->sw_if_index_has_features[arc] =
132 clib_bitmap_set (fm->sw_if_index_has_features[arc], sw_if_index,
137 vnet_get_feature_arc_index (const char *s)
139 vnet_feature_main_t *fm = &feature_main;
140 vnet_feature_arc_registration_t *reg;
143 p = hash_get_mem (fm->arc_index_by_name, s);
147 reg = uword_to_pointer (p[0], vnet_feature_arc_registration_t *);
148 return reg->feature_arc_index;
152 vnet_get_feature_index (u8 arc, const char *s)
154 vnet_feature_main_t *fm = &feature_main;
155 vnet_feature_registration_t *reg;
158 p = hash_get_mem (fm->next_feature_by_name[arc], s);
162 reg = uword_to_pointer (p[0], vnet_feature_registration_t *);
163 return reg->feature_index_u32;
167 vnet_feature_enable_disable (const char *arc_name, const char *node_name,
168 u32 sw_if_index, int enable_disable,
169 void *feature_config, u32 n_feature_config_bytes)
171 vnet_feature_main_t *fm = &feature_main;
172 vnet_feature_config_main_t *cm;
173 u32 feature_index, ci;
176 arc_index = vnet_get_feature_arc_index (arc_name);
181 cm = &fm->feature_config_mains[arc_index];
182 vec_validate_init_empty (cm->config_index_by_sw_if_index, sw_if_index, ~0);
183 feature_index = vnet_get_feature_index (arc_index, node_name);
184 if (feature_index == ~0)
186 ci = cm->config_index_by_sw_if_index[sw_if_index];
189 ? vnet_config_add_feature
190 : vnet_config_del_feature)
191 (vlib_get_main (), &cm->config_main, ci, feature_index, feature_config,
192 n_feature_config_bytes);
193 cm->config_index_by_sw_if_index[sw_if_index] = ci;
195 vnet_config_update_feature_count (fm, arc_index, sw_if_index,
201 /** Display the set of available driver features.
202 Useful for verifying that expected features are present
205 static clib_error_t *
206 show_features_command_fn (vlib_main_t * vm,
207 unformat_input_t * input, vlib_cli_command_t * cmd)
209 vnet_feature_main_t *fm = &feature_main;
210 vnet_feature_arc_registration_t *areg;
211 vnet_feature_registration_t *freg;
213 vlib_cli_output (vm, "Available feature paths");
218 vlib_cli_output (vm, "%s:", areg->arc_name);
219 vec_foreach (freg, fm->next_feature_by_arc[areg->feature_arc_index])
221 vlib_cli_output (vm, " %s\n", freg->node_name);
233 * Display the set of available driver features
237 * @cliexcmd{show ip features}
242 VLIB_CLI_COMMAND (show_features_command, static) = {
243 .path = "show features",
244 .short_help = "show features",
245 .function = show_features_command_fn,
249 /** Display the set of driver features configured on a specific interface
250 * Called by "show interface" handler
254 vnet_interface_features_show (vlib_main_t * vm, u32 sw_if_index)
256 vnet_feature_main_t *fm = &feature_main;
257 u32 node_index, current_config_index;
259 vnet_feature_config_main_t *cm = fm->feature_config_mains;
260 vnet_feature_arc_registration_t *areg;
261 vnet_config_main_t *vcm;
264 vnet_config_feature_t *feat;
268 vlib_cli_output (vm, "Driver feature paths configured on %U...",
269 format_vnet_sw_if_index_name,
270 vnet_get_main (), sw_if_index);
275 feature_arc = areg->feature_arc_index;
276 vcm = &(cm[feature_arc].config_main);
278 vlib_cli_output (vm, "\n%s:", areg->arc_name);
281 if (NULL == cm[feature_arc].config_index_by_sw_if_index ||
282 vec_len (cm[feature_arc].config_index_by_sw_if_index) <=
285 vlib_cli_output (vm, " none configured");
289 current_config_index =
290 vec_elt (cm[feature_arc].config_index_by_sw_if_index, sw_if_index);
292 if (current_config_index == ~0)
294 vlib_cli_output (vm, " none configured");
298 ASSERT (current_config_index
299 < vec_len (vcm->config_pool_index_by_user_index));
301 cfg_index = vcm->config_pool_index_by_user_index[current_config_index];
302 cfg = pool_elt_at_index (vcm->config_pool, cfg_index);
304 for (i = 0; i < vec_len (cfg->features); i++)
306 feat = cfg->features + i;
307 node_index = feat->node_index;
308 n = vlib_get_node (vm, node_index);
309 vlib_cli_output (vm, " %v", n->name);
315 * fd.io coding-style-patch-verification: ON
318 * eval: (c-set-style "gnu")