#include <stdlib.h>
#include <stddef.h>
#include <string.h>
-#include <sys/types.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
#include <vppinfra/format.h>
#include <vppinfra/byte_order.h>
#include <vppinfra/error.h>
#include <vlibapi/api.h>
#include <vppinfra/elog.h>
-api_main_t api_main;
-
-void vl_msg_api_barrier_sync (void) __attribute__ ((weak));
-void
-vl_msg_api_barrier_sync (void)
-{
-}
-
-void vl_msg_api_barrier_release (void) __attribute__ ((weak));
-void
-vl_msg_api_barrier_release (void)
-{
-}
+/* *INDENT-OFF* */
+api_main_t api_main =
+ {
+ .region_name = "/unset",
+ .api_uid = -1,
+ .api_gid = -1,
+ };
+/* *INDENT-ON* */
void
vl_msg_api_increment_missing_client_counter (void)
am->missing_clients++;
}
-typedef enum
-{
- DUMP,
- CUSTOM_DUMP,
- REPLAY,
- INITIALIZERS,
-} vl_api_replay_t;
-
int
vl_msg_api_rx_trace_enabled (api_main_t * am)
{
return 0;
}
+void
+vl_msg_api_barrier_sync (void)
+{
+}
+
+void
+vl_msg_api_barrier_release (void)
+{
+}
+
always_inline void
msg_handler_internal (api_main_t * am,
void *the_msg, int trace_it, int do_it, int free_it)
{
}
-clib_error_t *
-vl_api_init (vlib_main_t * vm)
-{
- static u8 once;
- api_main_t *am = &api_main;
-
- if (once)
- return 0;
-
- once = 1;
-
- am->region_name = "/unset";
- /*
- * Eventually passed to fchown, -1 => "current user"
- * instead of 0 => "root". A very fine disctinction at best.
- */
- if (am->api_uid == 0)
- am->api_uid = -1;
- if (am->api_gid == 0)
- am->api_gid = -1;
-
- return (0);
-}
-
-void vl_msg_api_custom_dump_configure (api_main_t * am)
- __attribute__ ((weak));
-void
-vl_msg_api_custom_dump_configure (api_main_t * am)
-{
-}
-
-VLIB_INIT_FUNCTION (vl_api_init);
-
-static void
-vl_msg_api_process_file (vlib_main_t * vm, u8 * filename,
- u32 first_index, u32 last_index,
- vl_api_replay_t which)
-{
- vl_api_trace_file_header_t *hp;
- int i, fd;
- struct stat statb;
- size_t file_size;
- u8 *msg;
- u8 endian_swap_needed = 0;
- api_main_t *am = &api_main;
- u8 *tmpbuf = 0;
- u32 nitems;
- void **saved_print_handlers = 0;
-
- fd = open ((char *) filename, O_RDONLY);
-
- if (fd < 0)
- {
- vlib_cli_output (vm, "Couldn't open %s\n", filename);
- return;
- }
-
- if (fstat (fd, &statb) < 0)
- {
- vlib_cli_output (vm, "Couldn't stat %s\n", filename);
- close (fd);
- return;
- }
-
- if (!(statb.st_mode & S_IFREG) || (statb.st_size < sizeof (*hp)))
- {
- vlib_cli_output (vm, "File not plausible: %s\n", filename);
- close (fd);
- return;
- }
-
- file_size = statb.st_size;
- file_size = (file_size + 4095) & ~(4096);
-
- hp = mmap (0, file_size, PROT_READ, MAP_PRIVATE, fd, 0);
-
- if (hp == (vl_api_trace_file_header_t *) MAP_FAILED)
- {
- vlib_cli_output (vm, "mmap failed: %s\n", filename);
- close (fd);
- return;
- }
- close (fd);
-
- if ((clib_arch_is_little_endian && hp->endian == VL_API_BIG_ENDIAN)
- || (clib_arch_is_big_endian && hp->endian == VL_API_LITTLE_ENDIAN))
- endian_swap_needed = 1;
-
- if (endian_swap_needed)
- nitems = ntohl (hp->nitems);
- else
- nitems = hp->nitems;
-
- if (last_index == (u32) ~ 0)
- {
- last_index = nitems - 1;
- }
-
- if (first_index >= nitems || last_index >= nitems)
- {
- vlib_cli_output (vm, "Range (%d, %d) outside file range (0, %d)\n",
- first_index, last_index, nitems - 1);
- munmap (hp, file_size);
- return;
- }
- if (hp->wrapped)
- vlib_cli_output (vm,
- "Note: wrapped/incomplete trace, results may vary\n");
-
- if (which == CUSTOM_DUMP)
- {
- saved_print_handlers = (void **) vec_dup (am->msg_print_handlers);
- vl_msg_api_custom_dump_configure (am);
- }
-
-
- msg = (u8 *) (hp + 1);
-
- for (i = 0; i < first_index; i++)
- {
- trace_cfg_t *cfgp;
- int size;
- u16 msg_id;
-
- size = clib_host_to_net_u32 (*(u32 *) msg);
- msg += sizeof (u32);
-
- if (clib_arch_is_little_endian)
- msg_id = ntohs (*((u16 *) msg));
- else
- msg_id = *((u16 *) msg);
-
- cfgp = am->api_trace_cfg + msg_id;
- if (!cfgp)
- {
- vlib_cli_output (vm, "Ugh: msg id %d no trace config\n", msg_id);
- munmap (hp, file_size);
- return;
- }
- msg += size;
- }
-
- if (which == REPLAY)
- am->replay_in_progress = 1;
-
- for (; i <= last_index; i++)
- {
- trace_cfg_t *cfgp;
- u16 *msg_idp;
- u16 msg_id;
- int size;
-
- if (which == DUMP)
- vlib_cli_output (vm, "---------- trace %d -----------\n", i);
-
- size = clib_host_to_net_u32 (*(u32 *) msg);
- msg += sizeof (u32);
-
- if (clib_arch_is_little_endian)
- msg_id = ntohs (*((u16 *) msg));
- else
- msg_id = *((u16 *) msg);
-
- cfgp = am->api_trace_cfg + msg_id;
- if (!cfgp)
- {
- vlib_cli_output (vm, "Ugh: msg id %d no trace config\n", msg_id);
- munmap (hp, file_size);
- vec_free (tmpbuf);
- am->replay_in_progress = 0;
- return;
- }
-
- /* Copy the buffer (from the read-only mmap'ed file) */
- vec_validate (tmpbuf, size - 1 + sizeof (uword));
- clib_memcpy (tmpbuf + sizeof (uword), msg, size);
- memset (tmpbuf, 0xf, sizeof (uword));
-
- /*
- * Endian swap if needed. All msg data is supposed to be
- * in network byte order. All msg handlers are supposed to
- * know that. The generic message dumpers don't know that.
- * One could fix apigen, I suppose.
- */
- if ((which == DUMP && clib_arch_is_little_endian) || endian_swap_needed)
- {
- void (*endian_fp) (void *);
- if (msg_id >= vec_len (am->msg_endian_handlers)
- || (am->msg_endian_handlers[msg_id] == 0))
- {
- vlib_cli_output (vm, "Ugh: msg id %d no endian swap\n", msg_id);
- munmap (hp, file_size);
- vec_free (tmpbuf);
- am->replay_in_progress = 0;
- return;
- }
- endian_fp = am->msg_endian_handlers[msg_id];
- (*endian_fp) (tmpbuf + sizeof (uword));
- }
-
- /* msg_id always in network byte order */
- if (clib_arch_is_little_endian)
- {
- msg_idp = (u16 *) (tmpbuf + sizeof (uword));
- *msg_idp = msg_id;
- }
-
- switch (which)
- {
- case CUSTOM_DUMP:
- case DUMP:
- if (msg_id < vec_len (am->msg_print_handlers) &&
- am->msg_print_handlers[msg_id])
- {
- u8 *(*print_fp) (void *, void *);
-
- print_fp = (void *) am->msg_print_handlers[msg_id];
- (*print_fp) (tmpbuf + sizeof (uword), vm);
- }
- else
- {
- vlib_cli_output (vm, "Skipping msg id %d: no print fcn\n",
- msg_id);
- break;
- }
- break;
-
- case INITIALIZERS:
- if (msg_id < vec_len (am->msg_print_handlers) &&
- am->msg_print_handlers[msg_id])
- {
- u8 *s;
- int j;
- u8 *(*print_fp) (void *, void *);
-
- print_fp = (void *) am->msg_print_handlers[msg_id];
-
- vlib_cli_output (vm, "/*");
-
- (*print_fp) (tmpbuf + sizeof (uword), vm);
- vlib_cli_output (vm, "*/\n");
-
- s = format (0, "static u8 * vl_api_%s_%d[%d] = {",
- am->msg_names[msg_id], i,
- am->api_trace_cfg[msg_id].size);
-
- for (j = 0; j < am->api_trace_cfg[msg_id].size; j++)
- {
- if ((j & 7) == 0)
- s = format (s, "\n ");
- s = format (s, "0x%02x,", tmpbuf[sizeof (uword) + j]);
- }
- s = format (s, "\n};\n%c", 0);
- vlib_cli_output (vm, (char *) s);
- vec_free (s);
- }
- break;
-
- case REPLAY:
- if (msg_id < vec_len (am->msg_print_handlers) &&
- am->msg_print_handlers[msg_id] && cfgp->replay_enable)
- {
- void (*handler) (void *);
-
- handler = (void *) am->msg_handlers[msg_id];
-
- if (!am->is_mp_safe[msg_id])
- vl_msg_api_barrier_sync ();
- (*handler) (tmpbuf + sizeof (uword));
- if (!am->is_mp_safe[msg_id])
- vl_msg_api_barrier_release ();
- }
- else
- {
- if (cfgp->replay_enable)
- vlib_cli_output (vm, "Skipping msg id %d: no handler\n",
- msg_id);
- break;
- }
- break;
- }
-
- _vec_len (tmpbuf) = 0;
- msg += size;
- }
-
- if (saved_print_handlers)
- {
- clib_memcpy (am->msg_print_handlers, saved_print_handlers,
- vec_len (am->msg_print_handlers) * sizeof (void *));
- vec_free (saved_print_handlers);
- }
-
- munmap (hp, file_size);
- vec_free (tmpbuf);
- am->replay_in_progress = 0;
-}
-
-u8 *
-format_vl_msg_api_trace_status (u8 * s, va_list * args)
-{
- api_main_t *am = va_arg (*args, api_main_t *);
- vl_api_trace_which_t which = va_arg (*args, vl_api_trace_which_t);
- vl_api_trace_t *tp;
- char *trace_name;
-
- switch (which)
- {
- case VL_API_TRACE_TX:
- tp = am->tx_trace;
- trace_name = "TX trace";
- break;
-
- case VL_API_TRACE_RX:
- tp = am->rx_trace;
- trace_name = "RX trace";
- break;
-
- default:
- abort ();
- }
-
- if (tp == 0)
- {
- s = format (s, "%s: not yet configured.\n", trace_name);
- return s;
- }
-
- s = format (s, "%s: used %d of %d items, %s enabled, %s wrapped\n",
- trace_name, vec_len (tp->traces), tp->nitems,
- tp->enabled ? "is" : "is not", tp->wrapped ? "has" : "has not");
- return s;
-}
static u8 post_mortem_dump_enabled;
-static clib_error_t *
-api_trace_command_fn (vlib_main_t * vm,
- unformat_input_t * input, vlib_cli_command_t * cmd)
-{
- u32 nitems = 256 << 10;
- api_main_t *am = &api_main;
- vl_api_trace_which_t which = VL_API_TRACE_RX;
- u8 *filename;
- u32 first = 0;
- u32 last = (u32) ~ 0;
- FILE *fp;
- int rv;
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "on") || unformat (input, "enable"))
- {
- if (unformat (input, "nitems %d", &nitems))
- ;
- vl_msg_api_trace_configure (am, which, nitems);
- vl_msg_api_trace_onoff (am, which, 1 /* on */ );
- }
- else if (unformat (input, "off"))
- {
- vl_msg_api_trace_onoff (am, which, 0);
- }
- else if (unformat (input, "save %s", &filename))
- {
- u8 *chroot_filename;
- if (strstr ((char *) filename, "..")
- || index ((char *) filename, '/'))
- {
- vlib_cli_output (vm, "illegal characters in filename '%s'",
- filename);
- return 0;
- }
-
- chroot_filename = format (0, "/tmp/%s%c", filename, 0);
-
- vec_free (filename);
-
- fp = fopen ((char *) chroot_filename, "w");
- if (fp == NULL)
- {
- vlib_cli_output (vm, "Couldn't create %s\n", chroot_filename);
- return 0;
- }
- rv = vl_msg_api_trace_save (am, which, fp);
- fclose (fp);
- if (rv == -1)
- vlib_cli_output (vm, "API Trace data not present\n");
- else if (rv == -2)
- vlib_cli_output (vm, "File for writing is closed\n");
- else if (rv == -10)
- vlib_cli_output (vm, "Error while writing header to file\n");
- else if (rv == -11)
- vlib_cli_output (vm, "Error while writing trace to file\n");
- else if (rv == -12)
- vlib_cli_output (vm,
- "Error while writing end of buffer trace to file\n");
- else if (rv == -13)
- vlib_cli_output (vm,
- "Error while writing start of buffer trace to file\n");
- else if (rv < 0)
- vlib_cli_output (vm, "Unkown error while saving: %d", rv);
- else
- vlib_cli_output (vm, "API trace saved to %s\n", chroot_filename);
- vec_free (chroot_filename);
- }
- else if (unformat (input, "dump %s", &filename))
- {
- vl_msg_api_process_file (vm, filename, first, last, DUMP);
- }
- else if (unformat (input, "custom-dump %s", &filename))
- {
- vl_msg_api_process_file (vm, filename, first, last, CUSTOM_DUMP);
- }
- else if (unformat (input, "replay %s", &filename))
- {
- vl_msg_api_process_file (vm, filename, first, last, REPLAY);
- }
- else if (unformat (input, "initializers %s", &filename))
- {
- vl_msg_api_process_file (vm, filename, first, last, INITIALIZERS);
- }
- else if (unformat (input, "tx"))
- {
- which = VL_API_TRACE_TX;
- }
- else if (unformat (input, "first %d", &first))
- {
- ;
- }
- else if (unformat (input, "last %d", &last))
- {
- ;
- }
- else if (unformat (input, "status"))
- {
- vlib_cli_output (vm, "%U", format_vl_msg_api_trace_status,
- am, which);
- }
- else if (unformat (input, "free"))
- {
- vl_msg_api_trace_onoff (am, which, 0);
- vl_msg_api_trace_free (am, which);
- }
- else if (unformat (input, "post-mortem-on"))
- post_mortem_dump_enabled = 1;
- else if (unformat (input, "post-mortem-off"))
- post_mortem_dump_enabled = 0;
- else
- return clib_error_return (0, "unknown input `%U'",
- format_unformat_error, input);
- }
- return 0;
-}
-
-/* *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,
-};
-/* *INDENT-ON* */
-
-static clib_error_t *
-api_config_fn (vlib_main_t * vm, unformat_input_t * input)
+void
+vl_msg_api_post_mortem_dump_enable_disable (int enable)
{
- u32 nitems = 256 << 10;
- vl_api_trace_which_t which = VL_API_TRACE_RX;
- api_main_t *am = &api_main;
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "on") || unformat (input, "enable"))
- {
- if (unformat (input, "nitems %d", &nitems))
- ;
- vl_msg_api_trace_configure (am, which, nitems);
- vl_msg_api_trace_onoff (am, which, 1 /* on */ );
- post_mortem_dump_enabled = 1;
- }
- else
- return clib_error_return (0, "unknown input `%U'",
- format_unformat_error, input);
- }
- return 0;
+ post_mortem_dump_enabled = enable;
}
-VLIB_CONFIG_FUNCTION (api_config_fn, "api-trace");
-
void
vl_msg_api_post_mortem_dump (void)
{
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