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 */
43 * Only intercept if we are in a vlib process.
44 * If we are called from a vlib worker thread or the vlib main
45 * thread then do not intercept. (Must not be called from an
46 * independent pthread).
48 if (os_get_cpu_number () == 0)
51 * We're in the vlib main thread or a vlib process. Make sure
52 * the process is running and we're not still initializing.
54 vm = vlib_get_main ();
55 if (vlib_in_process_context (vm))
57 /* Only suspend for the admin_down_process */
58 vlib_process_t *proc = vlib_get_current_process (vm);
59 if (!(proc->flags & VLIB_PROCESS_IS_RUNNING) ||
60 (proc->node_runtime.function != admin_up_down_process))
63 f64 delay = 1e-6 * us;
64 vlib_process_suspend (vm, delay);
68 return 0; // no override
72 rte_delay_us_override_cb (unsigned us)
74 if (rte_delay_us_override (us) == 0)
75 rte_delay_us_block (us);
80 vpe_main_init (vlib_main_t * vm)
83 vlib_unix_cli_set_prompt ("DBGvpp# ");
85 vlib_unix_cli_set_prompt ("vpp# ");
87 /* Turn off network stack components which we don't want */
88 vlib_mark_init_function_complete (vm, srp_init);
91 #if RTE_VERSION >= RTE_VERSION_NUM(16, 11, 0, 0)
92 /* register custom delay function */
93 rte_delay_us_callback_register (rte_delay_us_override_cb);
99 * Load plugins from /usr/lib/vpp_plugins by default
101 char *vlib_plugin_path = "/usr/lib/vpp_plugins";
104 vnet_get_handoff_structure (void)
106 static vnet_plugin_handoff_t _rv, *rv = &_rv;
108 rv->vnet_main = vnet_get_main ();
109 rv->ethernet_main = ðernet_main;
114 main (int argc, char *argv[])
117 vlib_main_t *vm = &vlib_global_main;
118 void vl_msg_api_set_first_available_msg_id (u16);
119 uword main_heap_size = (1ULL << 30);
122 void vlib_set_get_handoff_structure_cb (void *cb);
125 const char *msg = "ERROR: This binary requires CPU with %s extensions.\n";
127 if (!clib_cpu_supports_ ## a ()) \
129 fprintf(stderr, msg, b); \
154 * Load startup config from file.
155 * usage: vpp -c /etc/vpp/startup.conf
157 if ((argc == 3) && !strncmp (argv[1], "-c", 2))
166 fp = fopen (argv[2], "r");
169 fprintf (stderr, "open configuration file '%s' failed\n", argv[2]);
172 argv_ = calloc (1, sizeof (char *));
175 arg = strndup (argv[0], 1024);
182 if (fgets (inbuf, 4096, fp) == 0)
184 p = strtok (inbuf, " \t\n");
190 char **tmp = realloc (argv_, argc_ * sizeof (char *));
194 arg = strndup (p, 1024);
197 argv_[argc_ - 1] = arg;
198 p = strtok (NULL, " \t\n");
204 char **tmp = realloc (argv_, (argc_ + 1) * sizeof (char *));
215 * Look for and parse the "heapsize" config parameter.
216 * Manual since none of the clib infra has been bootstrapped yet.
218 * Format: heapsize <nn>[mM][gG]
221 for (i = 1; i < (argc - 1); i++)
223 if (!strncmp (argv[i], "plugin_path", 11))
226 vlib_plugin_path = argv[++i];
228 else if (!strncmp (argv[i], "heapsize", 8))
230 sizep = (u8 *) argv[i + 1];
232 while (*sizep >= '0' && *sizep <= '9')
235 size += *sizep++ - '0';
241 "warning: heapsize parse error '%s', use default %lld\n",
242 argv[i], (long long int) main_heap_size);
246 main_heap_size = size;
248 if (*sizep == 'g' || *sizep == 'G')
249 main_heap_size <<= 30;
250 else if (*sizep == 'm' || *sizep == 'M')
251 main_heap_size <<= 20;
257 /* Set up the plugin message ID allocator right now... */
258 vl_msg_api_set_first_available_msg_id (VL_MSG_FIRST_AVAILABLE);
260 /* Allocate main heap */
261 if (clib_mem_init (0, main_heap_size))
263 vm->init_functions_called = hash_create (0, /* value bytes */ 0);
266 unix_physmem_init (vm, 0 /* fail_if_physical_memory_not_present */ );
268 vlib_set_get_handoff_structure_cb (&vnet_get_handoff_structure);
269 return vlib_unix_main (argc, argv);
274 int rv __attribute__ ((unused)) =
275 write (2, "Main heap allocation failure!\r\n", 31);
281 static clib_error_t *
282 heapsize_config (vlib_main_t * vm, unformat_input_t * input)
286 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
288 if (unformat (input, "%dm", &junk)
289 || unformat (input, "%dM", &junk)
290 || unformat (input, "%dg", &junk) || unformat (input, "%dG", &junk))
293 return clib_error_return (0, "unknown input '%U'",
294 format_unformat_error, input);
299 VLIB_CONFIG_FUNCTION (heapsize_config, "heapsize");
301 static clib_error_t *
302 plugin_path_config (vlib_main_t * vm, unformat_input_t * input)
306 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
308 if (unformat (input, "%s", &junk))
314 return clib_error_return (0, "unknown input '%U'",
315 format_unformat_error, input);
320 VLIB_CONFIG_FUNCTION (plugin_path_config, "plugin_path");
322 void vl_msg_api_post_mortem_dump (void);
327 vl_msg_api_post_mortem_dump ();
331 void vhost_user_unmap_all (void) __attribute__ ((weak));
333 vhost_user_unmap_all (void)
340 static int recursion_block;
349 vl_msg_api_post_mortem_dump ();
350 vhost_user_unmap_all ();
357 vl_msg_api_barrier_sync (void)
359 vlib_worker_thread_barrier_sync (vlib_get_main ());
363 vl_msg_api_barrier_release (void)
365 vlib_worker_thread_barrier_release (vlib_get_main ());
368 /* This application needs 1 thread stack for the stats pthread */
370 vlib_app_num_thread_stacks_needed (void)
376 * Depending on the configuration selected above,
377 * it may be necessary to generate stub graph nodes.
378 * It is never OK to ignore "node 'x' refers to unknown node 'y'
384 static clib_error_t *
385 test_crash_command_fn (vlib_main_t * vm,
386 unformat_input_t * input, vlib_cli_command_t * cmd)
388 u64 *p = (u64 *) 0xdefec8ed;
397 VLIB_CLI_COMMAND (test_crash_command, static) = {
398 .path = "test crash",
399 .short_help = "crash the bus!",
400 .function = test_crash_command_fn,
407 * fd.io coding-style-patch-verification: ON
410 * eval: (c-set-style "gnu")