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-rw-r--r--src/vlib/init.c168
1 files changed, 168 insertions, 0 deletions
diff --git a/src/vlib/init.c b/src/vlib/init.c
new file mode 100644
index 00000000000..8d4784513ab
--- /dev/null
+++ b/src/vlib/init.c
@@ -0,0 +1,168 @@
+/*
+ * Copyright (c) 2015 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.
+ */
+/*
+ * init.c: mechanism for functions to be called at init/exit.
+ *
+ * Copyright (c) 2008 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <vlib/vlib.h>
+
+clib_error_t *
+vlib_call_init_exit_functions (vlib_main_t * vm,
+ _vlib_init_function_list_elt_t * head,
+ int call_once)
+{
+ clib_error_t *error = 0;
+ _vlib_init_function_list_elt_t *i;
+
+ i = head;
+ while (i)
+ {
+ if (call_once && !hash_get (vm->init_functions_called, i->f))
+ {
+ if (call_once)
+ hash_set1 (vm->init_functions_called, i->f);
+ error = i->f (vm);
+ if (error)
+ return error;
+ }
+ i = i->next_init_function;
+ }
+ return error;
+}
+
+clib_error_t *
+vlib_call_all_init_functions (vlib_main_t * vm)
+{
+ /* Call dummy functions to make sure purely static modules are
+ linked in. */
+#define _(f) vlib_##f##_reference ();
+ foreach_vlib_module_reference;
+#undef _
+
+ return vlib_call_init_exit_functions
+ (vm, vm->init_function_registrations, 1 /* call_once */ );
+}
+
+clib_error_t *
+vlib_call_all_main_loop_enter_functions (vlib_main_t * vm)
+{
+ return vlib_call_init_exit_functions
+ (vm, vm->main_loop_enter_function_registrations, 1 /* call_once */ );
+}
+
+clib_error_t *
+vlib_call_all_main_loop_exit_functions (vlib_main_t * vm)
+{
+ return vlib_call_init_exit_functions
+ (vm, vm->main_loop_exit_function_registrations, 1 /* call_once */ );
+}
+
+clib_error_t *
+vlib_call_all_config_functions (vlib_main_t * vm,
+ unformat_input_t * input, int is_early)
+{
+ clib_error_t *error = 0;
+ vlib_config_function_runtime_t *c, **all;
+ uword *hash = 0, *p;
+ uword i;
+
+ hash = hash_create_string (0, sizeof (uword));
+ all = 0;
+
+ c = vm->config_function_registrations;
+
+ while (c)
+ {
+ hash_set_mem (hash, c->name, vec_len (all));
+ vec_add1 (all, c);
+ unformat_init (&c->input, 0, 0);
+ c = c->next_registration;
+ }
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ u8 *s, *v;
+
+ if (!unformat (input, "%s %v", &s, &v) || !(p = hash_get_mem (hash, s)))
+ {
+ error = clib_error_create ("unknown input `%s %v'", s, v);
+ goto done;
+ }
+
+ c = all[p[0]];
+ if (vec_len (c->input.buffer) > 0)
+ vec_add1 (c->input.buffer, ' ');
+ vec_add (c->input.buffer, v, vec_len (v));
+ vec_free (v);
+ vec_free (s);
+ }
+
+ for (i = 0; i < vec_len (all); i++)
+ {
+ c = all[i];
+
+ /* Is this an early config? Are we doing early configs? */
+ if (is_early ^ c->is_early)
+ continue;
+
+ /* Already called? */
+ if (hash_get (vm->init_functions_called, c->function))
+ continue;
+ hash_set1 (vm->init_functions_called, c->function);
+
+ error = c->function (vm, &c->input);
+ if (error)
+ goto done;
+ }
+
+done:
+ for (i = 0; i < vec_len (all); i++)
+ {
+ c = all[i];
+ unformat_free (&c->input);
+ }
+ vec_free (all);
+ hash_free (hash);
+ return error;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */