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 if (areg->arc_index_ptr)
38 *areg->arc_index_ptr = arc_index;
39 hash_set_mem (fm->arc_index_by_name, areg->arc_name,
40 pointer_to_uword (areg));
42 /* process start nodes */
43 while ((s = areg->start_nodes[i]))
47 areg->n_start_nodes = i;
54 vec_validate (fm->next_feature_by_arc, arc_index - 1);
55 vec_validate (fm->feature_nodes, arc_index - 1);
56 vec_validate (fm->feature_config_mains, arc_index - 1);
57 vec_validate (fm->next_feature_by_name, arc_index - 1);
58 vec_validate (fm->sw_if_index_has_features, arc_index - 1);
59 vec_validate (fm->feature_count_by_sw_if_index, arc_index - 1);
61 freg = fm->next_feature;
64 vnet_feature_registration_t *next;
65 uword *p = hash_get_mem (fm->arc_index_by_name, freg->arc_name);
67 return clib_error_return (0, "Unknown feature arc '%s'",
70 areg = uword_to_pointer (p[0], vnet_feature_arc_registration_t *);
71 arc_index = areg->feature_arc_index;
74 freg->next = fm->next_feature_by_arc[arc_index];
75 fm->next_feature_by_arc[arc_index] = freg;
85 vnet_feature_config_main_t *cm;
86 vnet_config_main_t *vcm;
88 arc_index = areg->feature_arc_index;
89 cm = &fm->feature_config_mains[arc_index];
90 vcm = &cm->config_main;
91 if ((error = vnet_feature_arc_init (vm, vcm,
94 fm->next_feature_by_arc[arc_index],
95 &fm->feature_nodes[arc_index])))
100 fm->next_feature_by_name[arc_index] =
101 hash_create_string (0, sizeof (uword));
102 freg = fm->next_feature_by_arc[arc_index];
106 hash_set_mem (fm->next_feature_by_name[arc_index],
107 freg->node_name, pointer_to_uword (freg));
119 VLIB_INIT_FUNCTION (vnet_feature_init);
122 vnet_config_update_feature_count (vnet_feature_main_t * fm, u8 arc,
123 u32 sw_if_index, int is_add)
127 vec_validate (fm->feature_count_by_sw_if_index[arc], sw_if_index);
129 fm->feature_count_by_sw_if_index[arc][sw_if_index] += is_add ? 1 : -1;
131 ASSERT (fm->feature_count_by_sw_if_index[arc][sw_if_index] >= 0);
133 bit_value = fm->feature_count_by_sw_if_index[arc][sw_if_index] > 0;
135 fm->sw_if_index_has_features[arc] =
136 clib_bitmap_set (fm->sw_if_index_has_features[arc], sw_if_index,
141 vnet_get_feature_arc_index (const char *s)
143 vnet_feature_main_t *fm = &feature_main;
144 vnet_feature_arc_registration_t *reg;
147 p = hash_get_mem (fm->arc_index_by_name, s);
151 reg = uword_to_pointer (p[0], vnet_feature_arc_registration_t *);
152 return reg->feature_arc_index;
156 vnet_get_feature_index (u8 arc, const char *s)
158 vnet_feature_main_t *fm = &feature_main;
159 vnet_feature_registration_t *reg;
162 p = hash_get_mem (fm->next_feature_by_name[arc], s);
166 reg = uword_to_pointer (p[0], vnet_feature_registration_t *);
167 return reg->feature_index;
171 vnet_feature_enable_disable_with_index (u8 arc_index, u32 feature_index,
172 u32 sw_if_index, int enable_disable,
173 void *feature_config,
174 u32 n_feature_config_bytes)
176 vnet_feature_main_t *fm = &feature_main;
177 vnet_feature_config_main_t *cm;
180 if (arc_index == (u8) ~ 0)
181 return VNET_API_ERROR_INVALID_VALUE;
183 if (feature_index == ~0)
184 return VNET_API_ERROR_INVALID_VALUE_2;
186 cm = &fm->feature_config_mains[arc_index];
187 vec_validate_init_empty (cm->config_index_by_sw_if_index, sw_if_index, ~0);
188 ci = cm->config_index_by_sw_if_index[sw_if_index];
191 ? vnet_config_add_feature
192 : vnet_config_del_feature)
193 (vlib_get_main (), &cm->config_main, ci, feature_index, feature_config,
194 n_feature_config_bytes);
195 cm->config_index_by_sw_if_index[sw_if_index] = ci;
197 vnet_config_update_feature_count (fm, arc_index, sw_if_index,
204 vnet_feature_enable_disable (const char *arc_name, const char *node_name,
205 u32 sw_if_index, int enable_disable,
206 void *feature_config, u32 n_feature_config_bytes)
211 arc_index = vnet_get_feature_arc_index (arc_name);
213 if (arc_index == (u8) ~ 0)
214 return VNET_API_ERROR_INVALID_VALUE;
216 feature_index = vnet_get_feature_index (arc_index, node_name);
218 return vnet_feature_enable_disable_with_index (arc_index, feature_index,
219 sw_if_index, enable_disable,
221 n_feature_config_bytes);
225 /** Display the set of available driver features.
226 Useful for verifying that expected features are present
229 static clib_error_t *
230 show_features_command_fn (vlib_main_t * vm,
231 unformat_input_t * input, vlib_cli_command_t * cmd)
233 vnet_feature_main_t *fm = &feature_main;
234 vnet_feature_arc_registration_t *areg;
235 vnet_feature_registration_t *freg;
237 vlib_cli_output (vm, "Available feature paths");
242 vlib_cli_output (vm, "%s:", areg->arc_name);
243 freg = fm->next_feature_by_arc[areg->feature_arc_index];
246 vlib_cli_output (vm, " %s\n", freg->node_name);
259 * Display the set of available driver features
263 * @cliexcmd{show ip features}
268 VLIB_CLI_COMMAND (show_features_command, static) = {
269 .path = "show features",
270 .short_help = "show features",
271 .function = show_features_command_fn,
275 /** Display the set of driver features configured on a specific interface
276 * Called by "show interface" handler
280 vnet_interface_features_show (vlib_main_t * vm, u32 sw_if_index)
282 vnet_feature_main_t *fm = &feature_main;
283 u32 node_index, current_config_index;
285 vnet_feature_config_main_t *cm = fm->feature_config_mains;
286 vnet_feature_arc_registration_t *areg;
287 vnet_config_main_t *vcm;
290 vnet_config_feature_t *feat;
294 vlib_cli_output (vm, "Driver feature paths configured on %U...",
295 format_vnet_sw_if_index_name,
296 vnet_get_main (), sw_if_index);
301 feature_arc = areg->feature_arc_index;
302 vcm = &(cm[feature_arc].config_main);
304 vlib_cli_output (vm, "\n%s:", areg->arc_name);
307 if (NULL == cm[feature_arc].config_index_by_sw_if_index ||
308 vec_len (cm[feature_arc].config_index_by_sw_if_index) <=
311 vlib_cli_output (vm, " none configured");
315 current_config_index =
316 vec_elt (cm[feature_arc].config_index_by_sw_if_index, sw_if_index);
318 if (current_config_index == ~0)
320 vlib_cli_output (vm, " none configured");
324 ASSERT (current_config_index
325 < vec_len (vcm->config_pool_index_by_user_index));
327 cfg_index = vcm->config_pool_index_by_user_index[current_config_index];
328 cfg = pool_elt_at_index (vcm->config_pool, cfg_index);
330 for (i = 0; i < vec_len (cfg->features); i++)
332 feat = cfg->features + i;
333 node_index = feat->node_index;
334 n = vlib_get_node (vm, node_index);
335 vlib_cli_output (vm, " %v", n->name);
341 * fd.io coding-style-patch-verification: ON
344 * eval: (c-set-style "gnu")