2 * Copyright (c) 2015 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 <vppinfra/cpu.h>
17 #include <vlib/vlib.h>
18 #include <vlib/unix/unix.h>
19 #include <vnet/plugin/plugin.h>
20 #include <vnet/ethernet/ethernet.h>
22 #include <vpp-api/vpe_msg_enum.h>
25 #include <vnet/devices/dpdk/dpdk.h>
28 * Called by the dpdk driver's rte_delay_us() function.
29 * Return 0 to have the dpdk do a regular delay loop.
30 * Return 1 if to skip the delay loop because we are suspending
31 * the calling vlib process instead.
34 rte_delay_us_override (unsigned us)
38 /* Don't bother intercepting for short delays */
41 #if RTE_VERSION < RTE_VERSION_NUM(16, 11, 0, 0)
42 rte_delay_us_block (us);
48 * Only intercept if we are in a vlib process.
49 * If we are called from a vlib worker thread or the vlib main
50 * thread then do not intercept. (Must not be called from an
51 * independent pthread).
53 if (os_get_cpu_number () == 0)
56 * We're in the vlib main thread or a vlib process. Make sure
57 * the process is running and we're not still initializing.
59 vm = vlib_get_main ();
60 if (vlib_in_process_context (vm))
62 /* Only suspend for the admin_down_process */
63 vlib_process_t *proc = vlib_get_current_process (vm);
64 if (!(proc->flags & VLIB_PROCESS_IS_RUNNING) ||
65 (proc->node_runtime.function != admin_up_down_process))
68 f64 delay = 1e-6 * us;
69 vlib_process_suspend (vm, delay);
73 return 0; // no override
78 vpe_main_init (vlib_main_t * vm)
81 vlib_unix_cli_set_prompt ("DBGvpp# ");
83 vlib_unix_cli_set_prompt ("vpp# ");
85 /* Turn off network stack components which we don't want */
86 vlib_mark_init_function_complete (vm, srp_init);
89 #if RTE_VERSION >= RTE_VERSION_NUM(16, 11, 0, 0)
90 /* register custom delay function */
91 rte_delay_us_callback_register ((void (*)) rte_delay_us_override);
97 * Load plugins from /usr/lib/vpp_plugins by default
99 char *vlib_plugin_path = "/usr/lib/vpp_plugins";
102 vnet_get_handoff_structure (void)
104 static vnet_plugin_handoff_t _rv, *rv = &_rv;
106 rv->vnet_main = vnet_get_main ();
107 rv->ethernet_main = ðernet_main;
112 main (int argc, char *argv[])
115 vlib_main_t *vm = &vlib_global_main;
116 void vl_msg_api_set_first_available_msg_id (u16);
117 uword main_heap_size = (1ULL << 30);
120 void vlib_set_get_handoff_structure_cb (void *cb);
123 const char *msg = "ERROR: This binary requires CPU with %s extensions.\n";
125 if (!clib_cpu_supports_ ## a ()) \
127 fprintf(stderr, msg, b); \
152 * Load startup config from file.
153 * usage: vpp -c /etc/vpp/startup.conf
155 if ((argc == 3) && !strncmp (argv[1], "-c", 2))
164 fp = fopen (argv[2], "r");
167 fprintf (stderr, "open configuration file '%s' failed\n", argv[2]);
170 argv_ = calloc (1, sizeof (char *));
173 arg = strndup (argv[0], 1024);
180 if (fgets (inbuf, 4096, fp) == 0)
182 p = strtok (inbuf, " \t\n");
188 char **tmp = realloc (argv_, argc_ * sizeof (char *));
192 arg = strndup (p, 1024);
195 argv_[argc_ - 1] = arg;
196 p = strtok (NULL, " \t\n");
202 char **tmp = realloc (argv_, (argc_ + 1) * sizeof (char *));
213 * Look for and parse the "heapsize" config parameter.
214 * Manual since none of the clib infra has been bootstrapped yet.
216 * Format: heapsize <nn>[mM][gG]
219 for (i = 1; i < (argc - 1); i++)
221 if (!strncmp (argv[i], "plugin_path", 11))
224 vlib_plugin_path = argv[++i];
226 else if (!strncmp (argv[i], "heapsize", 8))
228 sizep = (u8 *) argv[i + 1];
230 while (*sizep >= '0' && *sizep <= '9')
233 size += *sizep++ - '0';
239 "warning: heapsize parse error '%s', use default %lld\n",
240 argv[i], (long long int) main_heap_size);
244 main_heap_size = size;
246 if (*sizep == 'g' || *sizep == 'G')
247 main_heap_size <<= 30;
248 else if (*sizep == 'm' || *sizep == 'M')
249 main_heap_size <<= 20;
255 /* Set up the plugin message ID allocator right now... */
256 vl_msg_api_set_first_available_msg_id (VL_MSG_FIRST_AVAILABLE);
258 /* Allocate main heap */
259 if (clib_mem_init (0, main_heap_size))
261 vm->init_functions_called = hash_create (0, /* value bytes */ 0);
264 unix_physmem_init (vm, 0 /* fail_if_physical_memory_not_present */ );
266 vlib_set_get_handoff_structure_cb (&vnet_get_handoff_structure);
267 return vlib_unix_main (argc, argv);
272 int rv __attribute__ ((unused)) =
273 write (2, "Main heap allocation failure!\r\n", 31);
279 static clib_error_t *
280 heapsize_config (vlib_main_t * vm, unformat_input_t * input)
284 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
286 if (unformat (input, "%dm", &junk)
287 || unformat (input, "%dM", &junk)
288 || unformat (input, "%dg", &junk) || unformat (input, "%dG", &junk))
291 return clib_error_return (0, "unknown input '%U'",
292 format_unformat_error, input);
297 VLIB_CONFIG_FUNCTION (heapsize_config, "heapsize");
299 static clib_error_t *
300 plugin_path_config (vlib_main_t * vm, unformat_input_t * input)
304 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
306 if (unformat (input, "%s", &junk))
312 return clib_error_return (0, "unknown input '%U'",
313 format_unformat_error, input);
318 VLIB_CONFIG_FUNCTION (plugin_path_config, "plugin_path");
320 void vl_msg_api_post_mortem_dump (void);
325 vl_msg_api_post_mortem_dump ();
329 void vhost_user_unmap_all (void) __attribute__ ((weak));
331 vhost_user_unmap_all (void)
338 static int recursion_block;
347 vl_msg_api_post_mortem_dump ();
348 vhost_user_unmap_all ();
355 vl_msg_api_barrier_sync (void)
357 vlib_worker_thread_barrier_sync (vlib_get_main ());
361 vl_msg_api_barrier_release (void)
363 vlib_worker_thread_barrier_release (vlib_get_main ());
366 /* This application needs 1 thread stack for the stats pthread */
368 vlib_app_num_thread_stacks_needed (void)
374 * Depending on the configuration selected above,
375 * it may be necessary to generate stub graph nodes.
376 * It is never OK to ignore "node 'x' refers to unknown node 'y'
382 static clib_error_t *
383 test_crash_command_fn (vlib_main_t * vm,
384 unformat_input_t * input, vlib_cli_command_t * cmd)
386 u64 *p = (u64 *) 0xdefec8ed;
395 VLIB_CLI_COMMAND (test_crash_command, static) = {
396 .path = "test crash",
397 .short_help = "crash the bus!",
398 .function = test_crash_command_fn,
405 * fd.io coding-style-patch-verification: ON
408 * eval: (c-set-style "gnu")