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
71 #if RTE_VERSION >= RTE_VERSION_NUM(16, 11, 0, 0)
73 rte_delay_us_override_cb (unsigned us)
75 if (rte_delay_us_override (us) == 0)
76 rte_delay_us_block (us);
82 vpe_main_init (vlib_main_t * vm)
85 vlib_unix_cli_set_prompt ("DBGvpp# ");
87 vlib_unix_cli_set_prompt ("vpp# ");
89 /* Turn off network stack components which we don't want */
90 vlib_mark_init_function_complete (vm, srp_init);
93 #if RTE_VERSION >= RTE_VERSION_NUM(16, 11, 0, 0)
94 /* register custom delay function */
95 rte_delay_us_callback_register (rte_delay_us_override_cb);
101 * Load plugins from /usr/lib/vpp_plugins by default
103 char *vlib_plugin_path = "/usr/lib/vpp_plugins";
106 vnet_get_handoff_structure (void)
108 static vnet_plugin_handoff_t _rv, *rv = &_rv;
110 rv->vnet_main = vnet_get_main ();
111 rv->ethernet_main = ðernet_main;
116 main (int argc, char *argv[])
119 vlib_main_t *vm = &vlib_global_main;
120 void vl_msg_api_set_first_available_msg_id (u16);
121 uword main_heap_size = (1ULL << 30);
124 void vlib_set_get_handoff_structure_cb (void *cb);
127 CLIB_UNUSED (const char *msg)
128 = "ERROR: This binary requires CPU with %s extensions.\n";
130 if (!clib_cpu_supports_ ## a ()) \
132 fprintf(stderr, msg, b); \
157 * Load startup config from file.
158 * usage: vpp -c /etc/vpp/startup.conf
160 if ((argc == 3) && !strncmp (argv[1], "-c", 2))
169 fp = fopen (argv[2], "r");
172 fprintf (stderr, "open configuration file '%s' failed\n", argv[2]);
175 argv_ = calloc (1, sizeof (char *));
178 arg = strndup (argv[0], 1024);
185 if (fgets (inbuf, 4096, fp) == 0)
187 p = strtok (inbuf, " \t\n");
193 char **tmp = realloc (argv_, argc_ * sizeof (char *));
197 arg = strndup (p, 1024);
200 argv_[argc_ - 1] = arg;
201 p = strtok (NULL, " \t\n");
207 char **tmp = realloc (argv_, (argc_ + 1) * sizeof (char *));
218 * Look for and parse the "heapsize" config parameter.
219 * Manual since none of the clib infra has been bootstrapped yet.
221 * Format: heapsize <nn>[mM][gG]
224 for (i = 1; i < (argc - 1); i++)
226 if (!strncmp (argv[i], "plugin_path", 11))
229 vlib_plugin_path = argv[++i];
231 else if (!strncmp (argv[i], "heapsize", 8))
233 sizep = (u8 *) argv[i + 1];
235 while (*sizep >= '0' && *sizep <= '9')
238 size += *sizep++ - '0';
244 "warning: heapsize parse error '%s', use default %lld\n",
245 argv[i], (long long int) main_heap_size);
249 main_heap_size = size;
251 if (*sizep == 'g' || *sizep == 'G')
252 main_heap_size <<= 30;
253 else if (*sizep == 'm' || *sizep == 'M')
254 main_heap_size <<= 20;
260 /* Set up the plugin message ID allocator right now... */
261 vl_msg_api_set_first_available_msg_id (VL_MSG_FIRST_AVAILABLE);
263 /* Allocate main heap */
264 if (clib_mem_init (0, main_heap_size))
266 vm->init_functions_called = hash_create (0, /* value bytes */ 0);
269 unix_physmem_init (vm, 0 /* fail_if_physical_memory_not_present */ );
271 vlib_set_get_handoff_structure_cb (&vnet_get_handoff_structure);
272 return vlib_unix_main (argc, argv);
277 int rv __attribute__ ((unused)) =
278 write (2, "Main heap allocation failure!\r\n", 31);
284 static clib_error_t *
285 heapsize_config (vlib_main_t * vm, unformat_input_t * input)
289 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
291 if (unformat (input, "%dm", &junk)
292 || unformat (input, "%dM", &junk)
293 || unformat (input, "%dg", &junk) || unformat (input, "%dG", &junk))
296 return clib_error_return (0, "unknown input '%U'",
297 format_unformat_error, input);
302 VLIB_CONFIG_FUNCTION (heapsize_config, "heapsize");
304 static clib_error_t *
305 plugin_path_config (vlib_main_t * vm, unformat_input_t * input)
309 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
311 if (unformat (input, "%s", &junk))
317 return clib_error_return (0, "unknown input '%U'",
318 format_unformat_error, input);
323 VLIB_CONFIG_FUNCTION (plugin_path_config, "plugin_path");
325 void vl_msg_api_post_mortem_dump (void);
330 vl_msg_api_post_mortem_dump ();
334 void vhost_user_unmap_all (void) __attribute__ ((weak));
336 vhost_user_unmap_all (void)
343 static int recursion_block;
352 vl_msg_api_post_mortem_dump ();
353 vhost_user_unmap_all ();
360 vl_msg_api_barrier_sync (void)
362 vlib_worker_thread_barrier_sync (vlib_get_main ());
366 vl_msg_api_barrier_release (void)
368 vlib_worker_thread_barrier_release (vlib_get_main ());
371 /* This application needs 1 thread stack for the stats pthread */
373 vlib_app_num_thread_stacks_needed (void)
379 * Depending on the configuration selected above,
380 * it may be necessary to generate stub graph nodes.
381 * It is never OK to ignore "node 'x' refers to unknown node 'y'
387 static clib_error_t *
388 test_crash_command_fn (vlib_main_t * vm,
389 unformat_input_t * input, vlib_cli_command_t * cmd)
391 u64 *p = (u64 *) 0xdefec8ed;
400 VLIB_CLI_COMMAND (test_crash_command, static) = {
401 .path = "test crash",
402 .short_help = "crash the bus!",
403 .function = test_crash_command_fn,
410 * fd.io coding-style-patch-verification: ON
413 * eval: (c-set-style "gnu")