#include <vlibapi/api.h>
#include <vlibmemory/api.h>
+/**
+ * @file
+ * @brief Binary API messaging via shared memory
+ * Low-level, primary provisioning interface
+ */
+/*? %%clicmd:group_label Binary API CLI %% ?*/
+/*? %%syscfg:group_label Binary API configuration %% ?*/
+
#define TRACE_VLIB_MEMORY_QUEUE 0
#include <vlibmemory/vl_memory_msg_enum.h> /* enumerate all vlib messages */
return serialize_close_vector (sm);
}
+/*
+ * vl_api_memclnt_create_internal
+ */
+
+u32
+vl_api_memclnt_create_internal (char *name, unix_shared_memory_queue_t * q)
+{
+ vl_api_registration_t **regpp;
+ vl_api_registration_t *regp;
+ svm_region_t *svm;
+ void *oldheap;
+ api_main_t *am = &api_main;
+
+ ASSERT (vlib_get_thread_index () == 0);
+ pool_get (am->vl_clients, regpp);
+
+ svm = am->vlib_rp;
+
+ pthread_mutex_lock (&svm->mutex);
+ oldheap = svm_push_data_heap (svm);
+ *regpp = clib_mem_alloc (sizeof (vl_api_registration_t));
+
+ regp = *regpp;
+ memset (regp, 0, sizeof (*regp));
+ regp->registration_type = REGISTRATION_TYPE_SHMEM;
+ regp->vl_api_registration_pool_index = regpp - am->vl_clients;
+
+ regp->vl_input_queue = q;
+ regp->name = format (0, "%s%c", name, 0);
+
+ pthread_mutex_unlock (&svm->mutex);
+ svm_pop_heap (oldheap);
+ return vl_msg_api_handle_from_index_and_epoch
+ (regp->vl_api_registration_pool_index,
+ am->shmem_hdr->application_restarts);
+}
+
+
/*
* vl_api_memclnt_create_t_handler
*/
int rv = 0;
void *oldheap;
api_main_t *am = &api_main;
- u8 *serialized_message_table = 0;
/*
* This is tortured. Maintain a vlib-address-space private
svm = am->vlib_rp;
- if (am->serialized_message_table_in_shmem == 0)
- serialized_message_table = vl_api_serialize_message_table (am, 0);
-
pthread_mutex_lock (&svm->mutex);
oldheap = svm_push_data_heap (svm);
*regpp = clib_mem_alloc (sizeof (vl_api_registration_t));
regp->name = format (0, "%s", mp->name);
vec_add1 (regp->name, 0);
- if (serialized_message_table)
- am->serialized_message_table_in_shmem =
- vec_dup (serialized_message_table);
pthread_mutex_unlock (&svm->mutex);
svm_pop_heap (oldheap);
- vec_free (serialized_message_table);
+ ASSERT (am->serialized_message_table_in_shmem);
rp = vl_msg_api_alloc (sizeof (*rp));
rp->_vl_msg_id = ntohs (VL_API_MEMCLNT_CREATE_REPLY);
am->shmem_hdr->application_restarts);
rp->context = mp->context;
rp->response = ntohl (rv);
- rp->message_table = (u64) am->serialized_message_table_in_shmem;
+ rp->message_table =
+ pointer_to_uword (am->serialized_message_table_in_shmem);
vl_msg_api_send_shmem (q, (u8 *) & rp);
}
-/* Application callback to clean up leftover registrations from this client */
-int vl_api_memclnt_delete_callback (u32 client_index) __attribute__ ((weak));
-
-int
-vl_api_memclnt_delete_callback (u32 client_index)
+static int
+call_reaper_functions (u32 client_index)
{
+ clib_error_t *error = 0;
+ _vl_msg_api_function_list_elt_t *i;
+
+ i = api_main.reaper_function_registrations;
+ while (i)
+ {
+ error = i->f (client_index);
+ if (error)
+ clib_error_report (error);
+ i = i->next_init_function;
+ }
return 0;
}
handle = mp->index;
- if (vl_api_memclnt_delete_callback (handle))
+ if (call_reaper_functions (handle))
return;
epoch = vl_msg_api_handle_get_epoch (handle);
* vl_api_init
*/
static int
-memory_api_init (char *region_name)
+memory_api_init (const char *region_name)
{
int rv;
vl_msg_api_msg_config_t cfg;
f64 sleep_time, start_time;
f64 vector_rate;
int i;
+ u8 *serialized_message_table = 0;
+ svm_region_t *svm;
+ void *oldheap;
vlib_set_queue_signal_callback (vm, memclnt_queue_callback);
rp->last_msg_id);
}
+ /*
+ * Snapshoot the api message table.
+ */
+ serialized_message_table = vl_api_serialize_message_table (am, 0);
+
+ svm = am->vlib_rp;
+ pthread_mutex_lock (&svm->mutex);
+ oldheap = svm_push_data_heap (svm);
+
+ am->serialized_message_table_in_shmem = vec_dup (serialized_message_table);
+
+ pthread_mutex_unlock (&svm->mutex);
+ svm_pop_heap (oldheap);
+
+ /*
+ * Save the api message table snapshot, if configured
+ */
+ if (am->save_msg_table_filename)
+ {
+ int fd, rv;
+ u8 *chroot_file;
+ if (strstr ((char *) am->save_msg_table_filename, "..")
+ || index ((char *) am->save_msg_table_filename, '/'))
+ {
+ clib_warning ("illegal save-message-table filename '%s'",
+ am->save_msg_table_filename);
+ goto skip_save;
+ }
+
+ chroot_file = format (0, "/tmp/%s%c", am->save_msg_table_filename, 0);
+
+ fd = creat ((char *) chroot_file, 0644);
+
+ if (fd < 0)
+ {
+ clib_unix_warning ("creat");
+ goto skip_save;
+ }
+ rv = write (fd, serialized_message_table,
+ vec_len (serialized_message_table));
+
+ if (rv != vec_len (serialized_message_table))
+ clib_unix_warning ("write");
+
+ rv = close (fd);
+ if (rv < 0)
+ clib_unix_warning ("close");
+
+ vec_free (chroot_file);
+ }
+
+skip_save:
+ vec_free (serialized_message_table);
+
/* $$$ pay attention to frame size, control CPU usage */
while (1)
{
handle = vl_msg_api_handle_from_index_and_epoch
(dead_indices[i], shm->application_restarts);
- (void) vl_api_memclnt_delete_callback (handle);
+ (void) call_reaper_functions (handle);
}
}
return 0;
}
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (memclnt_node,static) = {
+ .function = memclnt_process,
+ .type = VLIB_NODE_TYPE_PROCESS,
+ .name = "api-rx-from-ring",
+ .state = VLIB_NODE_STATE_DISABLED,
+};
+/* *INDENT-ON* */
+
static clib_error_t *
vl_api_show_histogram_command (vlib_main_t * vm,
return 0;
}
+/*?
+ * Display the binary api sleep-time histogram
+?*/
/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (cli_show_api_histogram_command, static) = {
- .path = "show api histogram",
- .short_help = "show api histogram",
- .function = vl_api_show_histogram_command,
+VLIB_CLI_COMMAND (cli_show_api_histogram_command, static) =
+{
+ .path = "show api histogram",
+ .short_help = "show api histogram",
+ .function = vl_api_show_histogram_command,
};
/* *INDENT-ON* */
return 0;
}
+/*?
+ * Clear the binary api sleep-time histogram
+?*/
/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (cli_clear_api_histogram_command, static) = {
- .path = "clear api histogram",
- .short_help = "clear api histogram",
- .function = vl_api_clear_histogram_command,
-};
-/* *INDENT-ON* */
-
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (memclnt_node,static) = {
- .function = memclnt_process,
- .type = VLIB_NODE_TYPE_PROCESS,
- .name = "api-rx-from-ring",
- .state = VLIB_NODE_STATE_DISABLED,
+VLIB_CLI_COMMAND (cli_clear_api_histogram_command, static) =
+{
+ .path = "clear api histogram",
+ .short_help = "clear api histogram",
+ .function = vl_api_clear_histogram_command,
};
/* *INDENT-ON* */
}
/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (cli_show_api_command, static) = {
- .path = "show api",
- .short_help = "Show API information",
+VLIB_CLI_COMMAND (cli_show_api_command, static) =
+{
+ .path = "show api",
+ .short_help = "Show API information",
};
/* *INDENT-ON* */
+/*?
+ * Display binary api message allocation ring statistics
+?*/
/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (cli_show_api_ring_command, static) = {
- .path = "show api ring-stats",
- .short_help = "Message ring statistics",
- .function = vl_api_ring_command,
+VLIB_CLI_COMMAND (cli_show_api_ring_command, static) =
+{
+ .path = "show api ring-stats",
+ .short_help = "Message ring statistics",
+ .function = vl_api_ring_command,
};
/* *INDENT-ON* */
+/*?
+ * Display current api client connections
+?*/
/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (cli_show_api_clients_command, static) = {
- .path = "show api clients",
- .short_help = "Client information",
- .function = vl_api_client_command,
+VLIB_CLI_COMMAND (cli_show_api_clients_command, static) =
+{
+ .path = "show api clients",
+ .short_help = "Client information",
+ .function = vl_api_client_command,
};
/* *INDENT-ON* */
+/*?
+ * Display the current api message tracing status
+?*/
/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (cli_show_api_status_command, static) = {
- .path = "show api status",
- .short_help = "Show API trace status",
- .function = vl_api_status_command,
+VLIB_CLI_COMMAND (cli_show_api_status_command, static) =
+{
+ .path = "show api trace-status",
+ .short_help = "Display API trace status",
+ .function = vl_api_status_command,
};
/* *INDENT-ON* */
return 0;
}
+/*?
+ * Display the current api message decode tables
+?*/
/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (cli_show_api_message_table_command, static) = {
- .path = "show api message-table",
- .short_help = "Message Table",
- .function = vl_api_message_table_command,
+VLIB_CLI_COMMAND (cli_show_api_message_table_command, static) =
+{
+ .path = "show api message-table",
+ .short_help = "Message Table",
+ .function = vl_api_message_table_command,
};
/* *INDENT-ON* */
return 0;
}
+/*?
+ * Control the binary API trace mechanism
+?*/
/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (trace, static) = {
- .path = "set api-trace",
- .short_help = "API trace",
- .function = vl_api_trace_command,
+VLIB_CLI_COMMAND (trace, static) =
+{
+ .path = "set api-trace [on][on tx][on rx][off][free][debug on][debug off]",
+ .short_help = "API trace",
+ .function = vl_api_trace_command,
};
/* *INDENT-ON* */
VLIB_INIT_FUNCTION (vlibmemory_init);
void
-vl_set_memory_region_name (char *name)
+vl_set_memory_region_name (const char *name)
{
api_main_t *am = &api_main;
vl_api_msg_range_t *rp = va_arg (*args, vl_api_msg_range_t *);
if (rp == 0)
- s = format (s, "%-20s%9s%9s", "Name", "First-ID", "Last-ID");
+ s = format (s, "%-50s%9s%9s", "Name", "First-ID", "Last-ID");
else
- s = format (s, "%-20s%9d%9d", rp->name, rp->first_msg_id,
+ s = format (s, "%-50s%9d%9d", rp->name, rp->first_msg_id,
rp->last_msg_id);
return s;
return 0;
}
+/*?
+ * Display the plugin binary API message range table
+?*/
/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (cli_show_api_plugin_command, static) = {
- .path = "show api plugin",
- .short_help = "show api plugin",
- .function = vl_api_show_plugin_command,
+VLIB_CLI_COMMAND (cli_show_api_plugin_command, static) =
+{
+ .path = "show api plugin",
+ .short_help = "show api plugin",
+ .function = vl_api_show_plugin_command,
};
/* *INDENT-ON* */
static void
vl_api_rpc_call_t_handler (vl_api_rpc_call_t * mp)
{
- vl_api_rpc_reply_t *rmp;
+ vl_api_rpc_call_reply_t *rmp;
int (*fp) (void *);
i32 rv = 0;
vlib_main_t *vm = vlib_get_main ();
if (q)
{
rmp = vl_msg_api_alloc_as_if_client (sizeof (*rmp));
- rmp->_vl_msg_id = ntohs (VL_API_RPC_REPLY);
+ rmp->_vl_msg_id = ntohs (VL_API_RPC_CALL_REPLY);
rmp->context = mp->context;
rmp->retval = rv;
vl_msg_api_send_shmem (q, (u8 *) & rmp);
}
static void
-vl_api_rpc_reply_t_handler (vl_api_rpc_reply_t * mp)
+vl_api_rpc_call_reply_t_handler (vl_api_rpc_call_reply_t * mp)
{
clib_warning ("unimplemented");
}
unix_shared_memory_queue_t *q;
/* Main thread: call the function directly */
- if (os_get_cpu_number () == 0)
+ if (vlib_get_thread_index () == 0)
{
vlib_main_t *vm = vlib_get_main ();
void (*call_fp) (void *);
#define foreach_rpc_api_msg \
_(RPC_CALL,rpc_call) \
-_(RPC_REPLY,rpc_reply)
+_(RPC_CALL_REPLY,rpc_call_reply)
#define foreach_plugin_trace_msg \
_(TRACE_PLUGIN_MSG_IDS,trace_plugin_msg_ids)
static clib_error_t *
rpc_api_hookup (vlib_main_t * vm)
{
+ api_main_t *am = &api_main;
#define _(N,n) \
vl_msg_api_set_handlers(VL_API_##N, #n, \
vl_api_##n##_t_handler, \
sizeof(vl_api_##n##_t), 1 /* do trace */);
foreach_plugin_trace_msg;
#undef _
+
+ /* No reason to halt the parade to create a trace record... */
+ am->is_mp_safe[VL_API_TRACE_PLUGIN_MSG_IDS] = 1;
+
return 0;
}
return 0;
}
+/*?
+ * Display, replay, or save a binary API trace
+?*/
+
/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (api_trace_command, static) = {
- .path = "api trace",
- .short_help =
- "api trace [on|off][dump|save|replay <file>][status][free][post-mortem-on]",
- .function = api_trace_command_fn,
+VLIB_CLI_COMMAND (api_trace_command, static) =
+{
+ .path = "api trace",
+ .short_help =
+ "api trace [on|off][dump|save|replay <file>][status][free][post-mortem-on]",
+ .function = api_trace_command_fn,
};
/* *INDENT-ON* */
vl_msg_api_trace_onoff (am, which, 1 /* on */ );
vl_msg_api_post_mortem_dump_enable_disable (1 /* enable */ );
}
+ else if (unformat (input, "save-api-table %s",
+ &am->save_msg_table_filename))
+ ;
else
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
return 0;
}
+/*?
+ * This module has three configuration parameters:
+ * "on" or "enable" - enables binary api tracing
+ * "nitems <nnn>" - sets the size of the circular buffer to <nnn>
+ * "save-api-table <filename>" - dumps the API message table to /tmp/<filename>
+?*/
VLIB_CONFIG_FUNCTION (api_config_fn, "api-trace");
+static clib_error_t *
+api_queue_config_fn (vlib_main_t * vm, unformat_input_t * input)
+{
+ api_main_t *am = &api_main;
+ u32 nitems;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "length %d", &nitems) ||
+ (unformat (input, "len %d", &nitems)))
+ {
+ if (nitems >= 1024)
+ am->vlib_input_queue_length = nitems;
+ else
+ clib_warning ("vlib input queue length %d too small, ignored",
+ nitems);
+ }
+ else
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, input);
+ }
+ return 0;
+}
+
+VLIB_CONFIG_FUNCTION (api_queue_config_fn, "api-queue");
+
+static u8 *
+extract_name (u8 * s)
+{
+ u8 *rv;
+
+ rv = vec_dup (s);
+
+ while (vec_len (rv) && rv[vec_len (rv)] != '_')
+ _vec_len (rv)--;
+
+ rv[vec_len (rv)] = 0;
+
+ return rv;
+}
+
+static u8 *
+extract_crc (u8 * s)
+{
+ int i;
+ u8 *rv;
+
+ rv = vec_dup (s);
+
+ for (i = vec_len (rv) - 1; i >= 0; i--)
+ {
+ if (rv[i] == '_')
+ {
+ vec_delete (rv, i + 1, 0);
+ break;
+ }
+ }
+ return rv;
+}
+
+typedef struct
+{
+ u8 *name_and_crc;
+ u8 *name;
+ u8 *crc;
+ u32 msg_index;
+ int which;
+} msg_table_unserialize_t;
+
+static int
+table_id_cmp (void *a1, void *a2)
+{
+ msg_table_unserialize_t *n1 = a1;
+ msg_table_unserialize_t *n2 = a2;
+
+ return (n1->msg_index - n2->msg_index);
+}
+
+static int
+table_name_and_crc_cmp (void *a1, void *a2)
+{
+ msg_table_unserialize_t *n1 = a1;
+ msg_table_unserialize_t *n2 = a2;
+
+ return strcmp ((char *) n1->name_and_crc, (char *) n2->name_and_crc);
+}
+
+static clib_error_t *
+dump_api_table_file_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ u8 *filename = 0;
+ api_main_t *am = &api_main;
+ serialize_main_t _sm, *sm = &_sm;
+ clib_error_t *error;
+ u32 nmsgs;
+ u32 msg_index;
+ u8 *name_and_crc;
+ int compare_current = 0;
+ int numeric_sort = 0;
+ msg_table_unserialize_t *table = 0, *item;
+ u32 i;
+ u32 ndifferences = 0;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "file %s", &filename))
+ ;
+ else if (unformat (input, "compare-current")
+ || unformat (input, "compare"))
+ compare_current = 1;
+ else if (unformat (input, "numeric"))
+ numeric_sort = 1;
+ else
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, input);
+ }
+
+ if (numeric_sort && compare_current)
+ return clib_error_return
+ (0, "Comparison and numeric sorting are incompatible");
+
+ if (filename == 0)
+ return clib_error_return (0, "File not specified");
+
+ /* Load the serialized message table from the table dump */
+
+ error = unserialize_open_unix_file (sm, (char *) filename);
+
+ if (error)
+ return error;
+
+ unserialize_integer (sm, &nmsgs, sizeof (u32));
+
+ for (i = 0; i < nmsgs; i++)
+ {
+ msg_index = unserialize_likely_small_unsigned_integer (sm);
+ unserialize_cstring (sm, (char **) &name_and_crc);
+ vec_add2 (table, item, 1);
+ item->msg_index = msg_index;
+ item->name_and_crc = name_and_crc;
+ item->name = extract_name (name_and_crc);
+ item->crc = extract_crc (name_and_crc);
+ item->which = 0; /* file */
+ }
+ serialize_close (sm);
+
+ /* Compare with the current image? */
+ if (compare_current)
+ {
+ /* Append the current message table */
+ u8 *tblv = vec_dup (am->serialized_message_table_in_shmem);
+
+ serialize_open_vector (sm, tblv);
+ unserialize_integer (sm, &nmsgs, sizeof (u32));
+
+ for (i = 0; i < nmsgs; i++)
+ {
+ msg_index = unserialize_likely_small_unsigned_integer (sm);
+ unserialize_cstring (sm, (char **) &name_and_crc);
+
+ vec_add2 (table, item, 1);
+ item->msg_index = msg_index;
+ item->name_and_crc = name_and_crc;
+ item->name = extract_name (name_and_crc);
+ item->crc = extract_crc (name_and_crc);
+ item->which = 1; /* current_image */
+ }
+ }
+
+ /* Sort the table. */
+ if (numeric_sort)
+ vec_sort_with_function (table, table_id_cmp);
+ else
+ vec_sort_with_function (table, table_name_and_crc_cmp);
+
+ if (compare_current)
+ {
+ ndifferences = 0;
+
+ /*
+ * In this case, the recovered table will have two entries per
+ * API message. So, if entries i and i+1 match, the message definitions
+ * are identical. Otherwise, the crc is different, or a message is
+ * present in only one of the tables.
+ */
+ vlib_cli_output (vm, "%=60s %s", "Message Name", "Result");
+
+ for (i = 0; i < vec_len (table);)
+ {
+ /* Last message lonely? */
+ if (i == vec_len (table) - 1)
+ {
+ ndifferences++;
+ goto last_unique;
+ }
+
+ /* Identical pair? */
+ if (!strncmp
+ ((char *) table[i].name_and_crc,
+ (char *) table[i + 1].name_and_crc,
+ vec_len (table[i].name_and_crc)))
+ {
+ i += 2;
+ continue;
+ }
+
+ ndifferences++;
+
+ /* Only in one of two tables? */
+ if (strncmp ((char *) table[i].name, (char *) table[i + 1].name,
+ vec_len (table[i].name)))
+ {
+ last_unique:
+ vlib_cli_output (vm, "%-60s only in %s",
+ table[i].name, table[i].which ?
+ "image" : "file");
+ i++;
+ continue;
+ }
+ /* In both tables, but with different signatures */
+ vlib_cli_output (vm, "%-60s definition changed", table[i].name);
+ i += 2;
+ }
+ if (ndifferences == 0)
+ vlib_cli_output (vm, "No api message signature differences found.");
+ else
+ vlib_cli_output (vm, "Found %u api message signature differences",
+ ndifferences);
+ goto cleanup;
+ }
+
+ /* Dump the table, sorted as shown above */
+ vlib_cli_output (vm, "%=60s %=8s %=10s", "Message name", "MsgID", "CRC");
+
+ for (i = 0; i < vec_len (table); i++)
+ {
+ item = table + i;
+ vlib_cli_output (vm, "%-60s %8u %10s", item->name,
+ item->msg_index, item->crc);
+ }
+
+cleanup:
+ for (i = 0; i < vec_len (table); i++)
+ {
+ vec_free (table[i].name_and_crc);
+ vec_free (table[i].name);
+ vec_free (table[i].crc);
+ }
+
+ vec_free (table);
+
+ return 0;
+}
+
+/*?
+ * Displays a serialized API message decode table, sorted by message name
+ *
+ * @cliexpar
+ * @cliexstart{show api dump file <filename>}
+ * Message name MsgID CRC
+ * accept_session 407 8e2a127e
+ * accept_session_reply 408 67d8c22a
+ * add_node_next 549 e4202993
+ * add_node_next_reply 550 e89d6eed
+ * etc.
+ * @cliexend
+?*/
+
+/*?
+ * Compares a serialized API message decode table with the current image
+ *
+ * @cliexpar
+ * @cliexstart{show api dump file <filename> compare}
+ * ip_add_del_route definition changed
+ * ip_table_add_del definition changed
+ * l2_macs_event only in image
+ * vnet_ip4_fib_counters only in file
+ * vnet_ip4_nbr_counters only in file
+ * @cliexend
+?*/
+
+/*?
+ * Display a serialized API message decode table
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (dump_api_table_file, static) =
+{
+ .path = "show api dump",
+ .short_help = "show api dump file <filename> [numeric | compare-current]",
+ .function = dump_api_table_file_command_fn,
+};
+/* *INDENT-ON* */
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff