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.
33 int rte_delay_us_override (unsigned us) {
36 /* Don't bother intercepting for short delays */
37 if (us < 10) return 0;
40 * Only intercept if we are in a vlib process.
41 * If we are called from a vlib worker thread or the vlib main
42 * thread then do not intercept. (Must not be called from an
43 * independent pthread).
45 if (os_get_cpu_number() == 0)
48 * We're in the vlib main thread or a vlib process. Make sure
49 * the process is running and we're not still initializing.
52 if (vlib_in_process_context(vm))
54 /* Only suspend for the admin_down_process */
55 vlib_process_t * proc = vlib_get_current_process(vm);
56 if (!(proc->flags & VLIB_PROCESS_IS_RUNNING) ||
57 (proc->node_runtime.function != admin_up_down_process))
60 f64 delay = 1e-6 * us;
61 vlib_process_suspend(vm, delay);
65 return 0; // no override
70 vpe_main_init (vlib_main_t * vm)
73 vlib_unix_cli_set_prompt ("DBGvpp# ");
75 vlib_unix_cli_set_prompt ("vpp# ");
77 /* Turn off network stack components which we don't want */
78 vlib_mark_init_function_complete (vm, srp_init);
82 * Load plugins from /usr/lib/vpp_plugins by default
84 char *vlib_plugin_path = "/usr/lib/vpp_plugins";
86 void *vnet_get_handoff_structure (void)
88 static vnet_plugin_handoff_t _rv, *rv = &_rv;
90 rv->vnet_main = vnet_get_main();
91 rv->ethernet_main = ðernet_main;
95 int main (int argc, char * argv[])
98 vlib_main_t * vm = &vlib_global_main;
99 void vl_msg_api_set_first_available_msg_id (u16);
100 uword main_heap_size = (1ULL << 30);
103 void vlib_set_get_handoff_structure_cb (void *cb);
106 const char * msg = "ERROR: This binary requires CPU with %s extensions.\n";
108 if (!clib_cpu_supports_ ## a ()) \
110 fprintf(stderr, msg, b); \
136 * Load startup config from file.
137 * usage: vpp -c /etc/vpp/startup.conf
139 if ((argc == 3) && !strncmp(argv[1], "-c", 2))
144 char ** argv_ = NULL;
148 fp = fopen (argv[2], "r");
151 fprintf(stderr, "open configuration file '%s' failed\n", argv[2]);
154 argv_ = calloc(1, sizeof(char *));
157 arg = strndup(argv[0], 1024);
163 if (fgets(inbuf, 4096, fp) == 0)
165 p = strtok(inbuf, " \t\n");
170 char ** tmp = realloc(argv_, argc_ * sizeof(char *));
174 arg = strndup(p, 1024);
177 argv_[argc_ - 1] = arg;
178 p = strtok(NULL, " \t\n");
184 char ** tmp = realloc(argv_, (argc_ + 1) * sizeof(char *));
195 * Look for and parse the "heapsize" config parameter.
196 * Manual since none of the clib infra has been bootstrapped yet.
198 * Format: heapsize <nn>[mM][gG]
201 for (i = 1; i < (argc-1); i++) {
202 if (!strncmp (argv[i], "plugin_path", 11)) {
204 vlib_plugin_path = argv[++i];
205 } else if (!strncmp (argv[i], "heapsize", 8)) {
206 sizep = (u8 *) argv[i+1];
208 while (*sizep >= '0' && *sizep <= '9') {
210 size += *sizep++ - '0';
215 "warning: heapsize parse error '%s', use default %lld\n",
216 argv[i], (long long int) main_heap_size);
220 main_heap_size = size;
222 if (*sizep == 'g' || *sizep == 'G')
223 main_heap_size <<= 30;
224 else if (*sizep == 'm' || *sizep == 'M')
225 main_heap_size <<= 20;
231 /* Set up the plugin message ID allocator right now... */
232 vl_msg_api_set_first_available_msg_id (VL_MSG_FIRST_AVAILABLE);
234 /* Allocate main heap */
235 if (clib_mem_init (0, main_heap_size)) {
236 vm->init_functions_called = hash_create (0, /* value bytes */ 0);
240 dpdk_pmd_constructor_init();
243 unix_physmem_init(vm, 0 /* fail_if_physical_memory_not_present */);
245 vlib_set_get_handoff_structure_cb (&vnet_get_handoff_structure);
246 return vlib_unix_main (argc, argv);
249 int rv __attribute__((unused)) =
250 write (2, "Main heap allocation failure!\r\n", 31);
256 static clib_error_t *
257 heapsize_config (vlib_main_t * vm, unformat_input_t * input)
261 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) {
262 if (unformat (input, "%dm", &junk)
263 || unformat (input, "%dM", &junk)
264 || unformat (input, "%dg", &junk)
265 || unformat (input, "%dG", &junk))
268 return clib_error_return (0, "unknown input '%U'",
269 format_unformat_error, input);
274 VLIB_CONFIG_FUNCTION (heapsize_config, "heapsize");
276 static clib_error_t *
277 plugin_path_config (vlib_main_t * vm, unformat_input_t * input)
281 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) {
282 if (unformat (input, "%s", &junk)) {
287 return clib_error_return (0, "unknown input '%U'",
288 format_unformat_error, input);
293 VLIB_CONFIG_FUNCTION (plugin_path_config, "plugin_path");
295 void vl_msg_api_post_mortem_dump(void);
299 vl_msg_api_post_mortem_dump();
303 void vhost_user_unmap_all (void) __attribute__((weak));
304 void vhost_user_unmap_all (void) { }
306 void os_exit (int code)
308 static int recursion_block;
317 vl_msg_api_post_mortem_dump();
318 vhost_user_unmap_all();
324 void vl_msg_api_barrier_sync(void)
326 vlib_worker_thread_barrier_sync (vlib_get_main());
329 void vl_msg_api_barrier_release(void)
331 vlib_worker_thread_barrier_release (vlib_get_main());
334 /* This application needs 1 thread stack for the stats pthread */
335 u32 vlib_app_num_thread_stacks_needed (void)
341 * Depending on the configuration selected above,
342 * it may be necessary to generate stub graph nodes.
343 * It is never OK to ignore "node 'x' refers to unknown node 'y'
349 static clib_error_t *
350 test_crash_command_fn (vlib_main_t * vm,
351 unformat_input_t * input,
352 vlib_cli_command_t * cmd)
354 u64 * p = (u64 *)0xdefec8ed;
362 VLIB_CLI_COMMAND (test_crash_command, static) = {
363 .path = "test crash",
364 .short_help = "crash the bus!",
365 .function = test_crash_command_fn,