--- /dev/null
+/*
+ * Copyright (c) 2016 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.
+ */
+
+#include <vnet/feature/feature.h>
+
+vnet_feature_main_t feature_main;
+
+static clib_error_t *
+vnet_feature_init (vlib_main_t * vm)
+{
+ vnet_feature_main_t *fm = &feature_main;
+ vnet_feature_registration_t *freg;
+ vnet_feature_arc_registration_t *areg;
+ u32 arc_index = 0;
+
+ fm->arc_index_by_name = hash_create_string (0, sizeof (uword));
+ areg = fm->next_arc;
+
+ /* process feature arc registrations */
+ while (areg)
+ {
+ char *s;
+ int i = 0;
+ areg->feature_arc_index = arc_index;
+ hash_set_mem (fm->arc_index_by_name, areg->arc_name,
+ pointer_to_uword (areg));
+
+ /* process start nodes */
+ while ((s = areg->start_nodes[i]))
+ {
+ vlib_node_t *n;
+ vlib_node_runtime_t *rt;
+ n = vlib_get_node_by_name (vm, (u8 *) s);
+
+ if (n == 0)
+ return clib_error_return (0,
+ "Unknown start node '%s' on feature arc '%s'",
+ s, areg->arc_name);
+
+ rt = vlib_node_get_runtime (vm, n->index);
+ rt->feature_arc_index = arc_index;
+ i++;
+ }
+ areg->n_start_nodes = i;
+
+ /* next */
+ areg = areg->next;
+ arc_index++;
+ }
+
+ vec_validate (fm->next_feature_by_arc, arc_index - 1);
+ vec_validate (fm->feature_nodes, arc_index - 1);
+ vec_validate (fm->feature_config_mains, arc_index - 1);
+ vec_validate (fm->next_feature_by_name, arc_index - 1);
+ vec_validate (fm->sw_if_index_has_features, arc_index - 1);
+ vec_validate (fm->feature_count_by_sw_if_index, arc_index - 1);
+
+ freg = fm->next_feature;
+ while (freg)
+ {
+ vlib_node_t *n;
+ vlib_node_runtime_t *rt;
+ uword *p = hash_get_mem (fm->arc_index_by_name, freg->arc_name);
+ if (p == 0)
+ return clib_error_return (0, "Unknown feature arc '%s'",
+ freg->arc_name);
+
+ areg = uword_to_pointer (p[0], vnet_feature_arc_registration_t *);
+ arc_index = areg->feature_arc_index;
+
+ /* set feature arc index in node runtime */
+ n = vlib_get_node_by_name (vm, (u8 *) freg->node_name);
+ if (n == 0)
+ return clib_error_return (0, "Unknown node '%s', freg->node_name");
+ rt = vlib_node_get_runtime (vm, n->index);
+ rt->feature_arc_index = arc_index;
+
+ vec_add1 (fm->next_feature_by_arc[arc_index], *freg);
+
+ /* next */
+ freg = freg->next;
+ }
+
+ while (areg)
+ {
+ clib_error_t *error;
+ vnet_feature_config_main_t *cm;
+ vnet_config_main_t *vcm;
+
+ arc_index = areg->feature_arc_index;
+ cm = &fm->feature_config_mains[arc_index];
+ vcm = &cm->config_main;
+ if ((error = vnet_feature_arc_init (vm, vcm,
+ areg->start_nodes,
+ areg->n_start_nodes,
+ fm->next_feature_by_arc[arc_index],
+ &fm->feature_nodes[arc_index])))
+ {
+ return error;
+ }
+
+ fm->next_feature_by_name[arc_index] =
+ hash_create_string (0, sizeof (uword));
+ freg = fm->next_feature_by_arc[arc_index];
+
+ while (freg)
+ {
+ hash_set_mem (fm->next_feature_by_name[arc_index],
+ freg->node_name, pointer_to_uword (freg));
+ freg = freg->next;
+ }
+
+ /* next */
+ areg = areg->next;
+ arc_index++;
+ }
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (vnet_feature_init);
+
+void
+vnet_config_update_feature_count (vnet_feature_main_t * fm, u16 arc,
+ u32 sw_if_index, int is_add)
+{
+ uword bit_value;
+
+ vec_validate (fm->feature_count_by_sw_if_index[arc], sw_if_index);
+
+ fm->feature_count_by_sw_if_index[arc][sw_if_index] += is_add ? 1 : -1;
+
+ ASSERT (fm->feature_count_by_sw_if_index[arc][sw_if_index] >= 0);
+
+ bit_value = fm->feature_count_by_sw_if_index[arc][sw_if_index] > 0;
+
+ fm->sw_if_index_has_features[arc] =
+ clib_bitmap_set (fm->sw_if_index_has_features[arc], sw_if_index,
+ bit_value);
+}
+
+u16
+vnet_feature_arc_index_from_node_name (const char *s)
+{
+ vnet_feature_main_t *fm = &feature_main;
+ vnet_feature_arc_registration_t *reg;
+ uword *p;
+
+ p = hash_get_mem (fm->arc_index_by_name, s);
+ if (p == 0)
+ return ~0;
+
+ reg = uword_to_pointer (p[0], vnet_feature_arc_registration_t *);
+ return reg->feature_arc_index;
+}
+
+u32
+vnet_feature_index_from_node_name (u16 arc, const char *s)
+{
+ vnet_feature_main_t *fm = &feature_main;
+ vnet_feature_registration_t *reg;
+ uword *p;
+
+ p = hash_get_mem (fm->next_feature_by_name[arc], s);
+ if (p == 0)
+ return ~0;
+
+ reg = uword_to_pointer (p[0], vnet_feature_registration_t *);
+ return reg->feature_index_u32;
+}
+
+void
+vnet_feature_enable_disable (const char *arc_name, const char *node_name,
+ u32 sw_if_index, int enable_disable,
+ void *feature_config, u32 n_feature_config_bytes)
+{
+ vnet_feature_main_t *fm = &feature_main;
+ vnet_feature_config_main_t *cm;
+ u32 feature_index, ci;
+ u16 arc_index;
+
+ arc_index = vnet_feature_arc_index_from_node_name (arc_name);
+
+ if (arc_index == ~0)
+ return;
+
+ cm = &fm->feature_config_mains[arc_index];
+ vec_validate_init_empty (cm->config_index_by_sw_if_index, sw_if_index, ~0);
+ feature_index = vnet_feature_index_from_node_name (arc_index, node_name);
+ if (feature_index == ~0)
+ return;
+ ci = cm->config_index_by_sw_if_index[sw_if_index];
+
+ ci = (enable_disable
+ ? vnet_config_add_feature
+ : vnet_config_del_feature)
+ (vlib_get_main (), &cm->config_main, ci, feature_index, feature_config,
+ n_feature_config_bytes);
+ cm->config_index_by_sw_if_index[sw_if_index] = ci;
+
+ vnet_config_update_feature_count (fm, arc_index, sw_if_index,
+ enable_disable);
+
+}
+
+
+/** Display the set of available driver features.
+ Useful for verifying that expected features are present
+*/
+
+static clib_error_t *
+show_features_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ vnet_feature_main_t *fm = &feature_main;
+ vnet_feature_arc_registration_t *areg;
+ vnet_feature_registration_t *freg;
+
+ vlib_cli_output (vm, "Available feature paths");
+
+ areg = fm->next_arc;
+ while (areg)
+ {
+ vlib_cli_output (vm, "%s:", areg->arc_name);
+ vec_foreach (freg, fm->next_feature_by_arc[areg->feature_arc_index])
+ {
+ vlib_cli_output (vm, " %s\n", freg->node_name);
+ }
+
+
+ /* next */
+ areg = areg->next;
+ }
+
+ return 0;
+}
+
+/*?
+ * Display the set of available driver features
+ *
+ * @cliexpar
+ * Example:
+ * @cliexcmd{show ip features}
+ * @cliexend
+ * @endparblock
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (show_features_command, static) = {
+ .path = "show features",
+ .short_help = "show features",
+ .function = show_features_command_fn,
+};
+/* *INDENT-ON* */
+
+/** Display the set of driver features configured on a specific interface
+ * Called by "show interface" handler
+ */
+
+void
+vnet_interface_features_show (vlib_main_t * vm, u32 sw_if_index)
+{
+ vnet_feature_main_t *fm = &feature_main;
+ u32 node_index, current_config_index;
+ u16 feature_arc;
+ vnet_feature_config_main_t *cm = fm->feature_config_mains;
+ vnet_feature_arc_registration_t *areg;
+ vnet_config_main_t *vcm;
+ vnet_config_t *cfg;
+ u32 cfg_index;
+ vnet_config_feature_t *feat;
+ vlib_node_t *n;
+ int i;
+
+ vlib_cli_output (vm, "Driver feature paths configured on %U...",
+ format_vnet_sw_if_index_name,
+ vnet_get_main (), sw_if_index);
+
+ areg = fm->next_arc;
+ while (areg)
+ {
+ feature_arc = areg->feature_arc_index;
+ vcm = &(cm[feature_arc].config_main);
+
+ vlib_cli_output (vm, "\n%s:", areg->arc_name);
+ areg = areg->next;
+
+ if (NULL == cm[feature_arc].config_index_by_sw_if_index ||
+ vec_len (cm[feature_arc].config_index_by_sw_if_index) < sw_if_index)
+ {
+ vlib_cli_output (vm, " none configured");
+ continue;
+ }
+
+ current_config_index =
+ vec_elt (cm[feature_arc].config_index_by_sw_if_index, sw_if_index);
+
+ if (current_config_index == ~0)
+ {
+ vlib_cli_output (vm, " none configured");
+ continue;
+ }
+
+ ASSERT (current_config_index
+ < vec_len (vcm->config_pool_index_by_user_index));
+
+ cfg_index = vcm->config_pool_index_by_user_index[current_config_index];
+ cfg = pool_elt_at_index (vcm->config_pool, cfg_index);
+
+ for (i = 0; i < vec_len (cfg->features); i++)
+ {
+ feat = cfg->features + i;
+ node_index = feat->node_index;
+ n = vlib_get_node (vm, node_index);
+ vlib_cli_output (vm, " %v", n->name);
+ }
+ }
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff