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authorMohsin Kazmi <sykazmi@cisco.com>2018-08-27 16:11:59 +0200
committerMohsin Kazmi <sykazmi@cisco.com>2018-08-27 16:28:15 +0200
commitf8520159d5e5b4988f56919d34aae3ee7ce38cdb (patch)
tree29af482860dd2f58dac646ea78a91076f7048e47 /src/plugins/memif/CMakeLists.txt
parentb3abec7c1f936ee4950d14cc8a9c34c729551f9f (diff)
cmake: Fix plugins .h includes
Change-Id: I90600d000afb02e8969f3c01bcf9e4b5c10a7d39 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat (limited to 'src/plugins/memif/CMakeLists.txt')
-rw-r--r--src/plugins/memif/CMakeLists.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/plugins/memif/CMakeLists.txt b/src/plugins/memif/CMakeLists.txt
index e704fd17f90..c0d6f0d6338 100644
--- a/src/plugins/memif/CMakeLists.txt
+++ b/src/plugins/memif/CMakeLists.txt
@@ -29,4 +29,9 @@ add_vpp_plugin(memif
MULTIARCH_SOURCES
device.c
node.c
+
+ INSTALL_HEADERS
+ memif.h
+ memif_all_api_h.h
+ memif_msg_enum.h
)
ef='#n183'>183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 
/*
 * Copyright (c) 2017 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <vppinfra/maplog.h>

/**
 * @brief Initialize a maplog object
 *
 * Compute record and file size parameters
 * Create and map two log segments to seed the process
 *
 * @param[in/out] a   init args structure
 * @return    0 => success, <0 => failure
 */
int
clib_maplog_init (clib_maplog_init_args_t * a)
{
  int i, fd;
  int rv = 0;
  u8 zero = 0;
  u32 record_size_in_cache_lines;
  u64 file_size_in_records;
  clib_maplog_main_t *mm;
  clib_maplog_header_t _h, *h = &_h;

  ASSERT (a && a->mm);
  mm = a->mm;

  /* Already initialized? */
  if (mm->flags & CLIB_MAPLOG_FLAG_INIT)
    return (-2);

  memset (mm, 0, sizeof (*mm));

  record_size_in_cache_lines =
    (a->record_size_in_bytes + CLIB_CACHE_LINE_BYTES -
     1) / CLIB_CACHE_LINE_BYTES;

  file_size_in_records = a->file_size_in_bytes
    / (record_size_in_cache_lines * CLIB_CACHE_LINE_BYTES);

  /* Round up file size in records to a power of 2, for speed... */
  mm->log2_file_size_in_records = max_log2 (file_size_in_records);
  file_size_in_records = 1ULL << (mm->log2_file_size_in_records);

  a->file_size_in_bytes = file_size_in_records * record_size_in_cache_lines
    * CLIB_CACHE_LINE_BYTES;

  mm->file_basename = format (0, "%s", a->file_basename);
  if (vec_len (mm->file_basename) > ARRAY_LEN (h->file_basename))
    {
      vec_free (mm->file_basename);
      return -11;
    }

  mm->file_size_in_records = file_size_in_records;
  mm->flags |= CLIB_MAPLOG_FLAG_INIT;
  mm->record_size_in_cachelines = record_size_in_cache_lines;

  /* Map two files */
  for (i = 0; i < 2; i++)
    {
      mm->filenames[i] = format (0, "%v_%d", mm->file_basename,
				 mm->current_file_index++);
      vec_add1 (mm->filenames[i], 0);

      fd = open ((char *) mm->filenames[i], O_CREAT | O_RDWR | O_TRUNC, 0600);
      if (fd < 0)
	{
	  rv = -3;
	  goto fail;
	}

      if (lseek (fd, a->file_size_in_bytes - 1, SEEK_SET) == (off_t) - 1)
	{
	  rv = -4;
	  goto fail;
	}
      if (write (fd, &zero, 1) != 1)
	{
	  rv = -5;
	  goto fail;
	}

      mm->file_baseva[i] = mmap (0, a->file_size_in_bytes,
				 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
      if (mm->file_baseva[i] == (u8 *) MAP_FAILED)
	{
	  clib_unix_warning ("mmap");
	  goto fail;
	}
      (void) close (fd);
    }

  memset (h, 0, sizeof (*h));
  h->maplog_major_version = MAPLOG_MAJOR_VERSION;
  h->maplog_minor_version = MAPLOG_MINOR_VERSION;
  h->maplog_patch_version = MAPLOG_PATCH_VERSION;
  h->application_id = a->application_id;
  h->application_major_version = a->application_major_version;
  h->application_minor_version = a->application_minor_version;
  h->application_patch_version = a->application_patch_version;
  h->record_size_in_cachelines = record_size_in_cache_lines;
  h->cacheline_size = CLIB_CACHE_LINE_BYTES;
  h->file_size_in_records = file_size_in_records;
  h->number_of_records = ~0ULL;
  h->number_of_files = ~0ULL;
  memcpy (h->file_basename, mm->file_basename, vec_len (mm->file_basename));

  mm->header_filename = format (0, "%v_header", mm->file_basename);
  vec_add1 (mm->header_filename, 0);

  fd = open ((char *) mm->header_filename, O_CREAT | O_RDWR | O_TRUNC, 0600);
  if (fd < 0)
    {
      clib_unix_warning ("header create");
      rv = -6;
      goto fail;
    }
  rv = write (fd, h, sizeof (*h));
  if (rv != sizeof (*h))
    {
      clib_unix_warning ("header write");
      rv = -7;
      goto fail;
    }
  (void) close (fd);
  return 0;

fail:
  if (fd >= 0)
    (void) close (fd);

  for (i = 0; i < 2; i++)
    {
      if (mm->file_baseva[i])
	(void) munmap ((u8 *) mm->file_baseva[i], a->file_size_in_bytes);
      if (mm->filenames[i])
	(void) unlink ((char *) mm->filenames[i]);
      vec_free (mm->filenames[i]);
    }
  if (mm->header_filename)
    {
      (void) unlink ((char *) mm->header_filename);
      vec_free (mm->header_filename);
    }
  return rv;
}

/* slow path: unmap a full log segment, and replace it */

u8 *
_clib_maplog_get_entry_slowpath (clib_maplog_main_t * mm, u64 my_record_index)
{
  int fd;
  u8 *rv;
  u8 zero = 0;
  u32 unmap_index = (mm->current_file_index) & 1;
  u64 file_size_in_bytes = mm->file_size_in_records
    * mm->record_size_in_cachelines * CLIB_CACHE_LINE_BYTES;

  /*
   * Kill some time by calling format before we make the previous log
   * segment disappear. Obviously it won't do to call clib_maplog_get_entry(),
   * wait 100ms, and then fill in the log entry.
   */
  vec_reset_length (mm->filenames[unmap_index]);
  mm->filenames[unmap_index] = format (mm->filenames[unmap_index],
				       "%v_%d", mm->file_basename,
				       mm->current_file_index++);

  /* Unmap the previous (full) segment */
  (void) munmap ((u8 *) mm->file_baseva[unmap_index], file_size_in_bytes);

  /* Create a new segment */
  fd = open ((char *) mm->filenames[unmap_index],
	     O_CREAT | O_RDWR | O_TRUNC, 0600);

  /* This is not real error recovery... */
  if (fd < 0)
    {
      clib_unix_warning ("creat");
      abort ();
    }

  if (lseek (fd, file_size_in_bytes - 1, SEEK_SET) == (off_t) - 1)
    {
      clib_unix_warning ("lseek");
      abort ();
    }
  if (write (fd, &zero, 1) != 1)
    {
      clib_unix_warning ("set-size write");
      abort ();
    }

  mm->file_baseva[unmap_index] =
    mmap (0, file_size_in_bytes, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
  if (mm->file_baseva[unmap_index] == (u8 *) MAP_FAILED)
    {
      clib_unix_warning ("mmap");
      abort ();
    }
  (void) close (fd);

  rv = (u8 *)
    mm->file_baseva[(my_record_index >> mm->log2_file_size_in_records) & 1] +
    (my_record_index & (mm->file_size_in_records - 1))
    * mm->record_size_in_cachelines * CLIB_CACHE_LINE_BYTES;

  return rv;
}

/**
 * @brief Close a mapped log, and update the log header file
 *
 * Unmap the current log segments.
 * Read the log header. Update the number of records, and number of files
 *
 * @param[in/out] mm	mapped log object
 */
void
clib_maplog_close (clib_maplog_main_t * mm)
{
  int i, rv;
  u64 file_size_in_bytes;
  int fd;
  clib_maplog_header_t _h, *h = &_h;

  if (!(mm->flags & CLIB_MAPLOG_FLAG_INIT))
    return;

  file_size_in_bytes =
    mm->file_size_in_records * mm->record_size_in_cachelines *
    CLIB_CACHE_LINE_BYTES;

  /* unmap current + next segments */
  for (i = 0; i < 2; i++)
    {
      (void) munmap ((u8 *) mm->file_baseva[i], file_size_in_bytes);
      vec_free (mm->filenames[i]);
    }

  /* Open the log header */
  fd = open ((char *) mm->header_filename, O_RDWR, 0600);
  if (fd < 0)
    {
      clib_unix_warning ("reopen maplog header");
      goto out;
    }

  /* Read the log */
  rv = read (fd, h, sizeof (*h));
  if (rv != sizeof (*h))
    {
      clib_unix_warning ("read maplog header");
      goto out;
    }
  /* Fix the header... */
  h->number_of_records = mm->next_record_index;
  h->number_of_files = mm->current_file_index;

  /* Back to the beginning of the log header... */
  if (lseek (fd, 0, SEEK_SET) < 0)
    {
      clib_unix_warning ("lseek to rewrite header");
      goto out;
    }
  /* Rewrite the log header */
  rv = write (fd, h, sizeof (*h));
  if (rv != sizeof (*h))
    clib_unix_warning ("rewrite header");

out:
  if (fd >= 0)
    (void) close (fd);

  vec_free (mm->file_basename);
  vec_free (mm->header_filename);
  memset (mm, 0, sizeof (*mm));
}

/**
 * @brief format a log header
 *
 * Usage: s = format (0, "%U", format_maplog_header, headerp, verbose);
 * @param [in] h clib_maplog_header_t pointer
 * @param [in] verbose self-explanatory
 */
u8 *
format_maplog_header (u8 * s, va_list * args)
{
  clib_maplog_header_t *h = va_arg (*args, clib_maplog_header_t *);
  int verbose = va_arg (*args, int);

  if (!verbose)
    goto brief;
  s = format (s, "basename %s ", h->file_basename);
  s = format (s, "log ver %d.%d.%d app id %u ver %d.%d.%d\n",
	      h->maplog_major_version,
	      h->maplog_minor_version,
	      h->maplog_patch_version,
	      h->application_id,
	      h->application_major_version,
	      h->application_minor_version, h->application_patch_version);
  s = format (s, "  records are %d %d-byte cachelines\n",
	      h->record_size_in_cachelines, h->cacheline_size);
  s = format (s, "  files are %lld records long, %lld files\n",
	      h->file_size_in_records, h->number_of_files);
  s = format (s, "  %lld records total\n", h->number_of_records);
  return s;

brief:
  s = format (s, "%s %lld records %lld files %lld records/file",
	      h->file_basename, h->number_of_records, h->number_of_files,
	      h->file_size_in_records);
  return s;
}

/**
 * @brief Process a complete maplog
 *
 * Reads the maplog header. Map and process all log segments in order.
 * Calls the callback function once per file with a record count.
 *
 * @param [in] file_basename Same basename supplied to clib_maplog_init
 * @param [in] fp_arg Callback function pointer
 */
int
clib_maplog_process (char *file_basename, void *fp_arg)
{
  clib_maplog_header_t _h, *h = &_h;
  int fd, rv = 0;
  u64 file_index;
  u64 file_size_in_bytes;
  u8 *header_filename, *this_filename = 0;
  u8 *file_baseva;
  void (*fp) (clib_maplog_header_t *, void *data, u64 count);
  u64 records_this_file, records_left;
  ASSERT (fp_arg);

  fp = fp_arg;

  header_filename = format (0, "%s_header%c", file_basename, 0);

  fd = open ((char *) header_filename, O_RDONLY, 0600);
  if (fd < 0)
    {
      clib_unix_warning ("open maplog header");
      rv = -1;
      goto out;
    }
  rv = read (fd, h, sizeof (*h));
  if (rv != sizeof (*h))
    {
      clib_unix_warning ("read maplog header");
      rv = -2;
      goto out;
    }
  (void) close (fd);

  file_size_in_bytes = h->file_size_in_records
    * h->record_size_in_cachelines * CLIB_CACHE_LINE_BYTES;

  records_left = h->number_of_records;

  for (file_index = 0; file_index < h->number_of_files; file_index++)
    {
      vec_reset_length (this_filename);
      this_filename = format (this_filename, "%s_%llu%c", file_basename,
			      file_index, 0);
      fd = open ((char *) this_filename, O_RDONLY, 0600);
      if (fd < 0)
	{
	  clib_unix_warning ("open maplog file");
	  rv = -3;
	  goto out;
	}

      file_baseva =
	mmap (0, file_size_in_bytes, PROT_READ, MAP_SHARED, fd, 0);
      (void) close (fd);
      if (file_baseva == (u8 *) MAP_FAILED)
	{
	  clib_unix_warning ("mmap");
	  rv = -4;
	  goto out;
	}

      records_this_file = (records_left > h->file_size_in_records) ?
	h->file_size_in_records : records_left;

      (*fp) (h, file_baseva, records_this_file);

      if (munmap (file_baseva, file_size_in_bytes) < 0)
	{
	  clib_warning ("munmap");
	  rv = -5;
	  /* but don't stop... */
	}
      records_left -= records_this_file;
      if (records_left == 0)
	break;
    }

out:
  if (fd > 0)
    (void) close (fd);

  vec_free (this_filename);
  vec_free (header_filename);
  return rv;
}


/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */