pcap-based dispatch tracer

To facilitate dispatch trajectory tracing, vlib_buffer_t decoding, etc.
through Wireshark

Change-Id: I31356b9fa1f40cba8830aaf10a86a9fbb7546438
Signed-off-by: Dave Barach <dave@barachs.net>

1 files changed, 0 insertions, 269 deletions

diff --git a/src/vnet/unix/pcap.c b/src/vnet/unix/pcap.c
deleted file mode 100644
index 3c9ce314d9c..00000000000
--- a/src/vnet/unix/pcap.c
+++ /dev/null
@@ -1,269 +0,0 @@
-/*
- * Copyright (c) 2015 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.
- */
-/*
- * pcap.c: libpcap packet capture format
- *
- * Copyright (c) 2008 Eliot Dresselhaus
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include <vnet/unix/pcap.h>
-#include <sys/fcntl.h>
-
-/**
- * @file
- * @brief PCAP function.
- *
- * Usage:
- *
- * <code><pre>
- * \#include <vnet/unix/pcap.h>
- *
- * static pcap_main_t pcap = {
- *  .file_name = "/tmp/ip4",
- *  .n_packets_to_capture = 2,
- *  .packet_type = PCAP_PACKET_TYPE_ip,
- * };
- * </pre></code>
- *
- * To add a buffer:
- *
- *  <code><pre>pcap_add_buffer (&pcap, vm, pi0, 128);</pre></code>
- *
- * File will be written after @c n_packets_to_capture or call to pcap_write (&amp;pcap).
- *
-*/
-
-/**
- * @brief Close PCAP file
- *
- * @return rc - clib_error_t
- *
- */
-clib_error_t *
-pcap_close (pcap_main_t * pm)
-{
-  close (pm->file_descriptor);
-  pm->flags &= ~PCAP_MAIN_INIT_DONE;
-  pm->file_descriptor = -1;
-  return 0;
-}
-
-/**
- * @brief Write PCAP file
- *
- * @return rc - clib_error_t
- *
- */
-clib_error_t *
-pcap_write (pcap_main_t * pm)
-{
-  clib_error_t *error = 0;
-
-  if (!(pm->flags & PCAP_MAIN_INIT_DONE))
-    {
-      pcap_file_header_t fh;
-      int n;
-
-      if (!pm->file_name)
-	pm->file_name = "/tmp/vnet.pcap";
-
-      pm->file_descriptor =
-	open (pm->file_name, O_CREAT | O_TRUNC | O_WRONLY, 0664);
-      if (pm->file_descriptor < 0)
-	{
-	  error =
-	    clib_error_return_unix (0, "failed to open `%s'", pm->file_name);
-	  goto done;
-	}
-
-      pm->flags |= PCAP_MAIN_INIT_DONE;
-      pm->n_packets_captured = 0;
-      pm->n_pcap_data_written = 0;
-      clib_spinlock_init (&pm->lock);
-
-      /* Write file header. */
-      clib_memset (&fh, 0, sizeof (fh));
-      fh.magic = 0xa1b2c3d4;
-      fh.major_version = 2;
-      fh.minor_version = 4;
-      fh.time_zone = 0;
-      fh.max_packet_size_in_bytes = 1 << 16;
-      fh.packet_type = pm->packet_type;
-      n = write (pm->file_descriptor, &fh, sizeof (fh));
-      if (n != sizeof (fh))
-	{
-	  if (n < 0)
-	    error =
-	      clib_error_return_unix (0, "write file header `%s'",
-				      pm->file_name);
-	  else
-	    error =
-	      clib_error_return (0, "short write of file header `%s'",
-				 pm->file_name);
-	  goto done;
-	}
-    }
-
-  while (vec_len (pm->pcap_data) > pm->n_pcap_data_written)
-    {
-      int n = vec_len (pm->pcap_data) - pm->n_pcap_data_written;
-
-      n = write (pm->file_descriptor,
-		 vec_elt_at_index (pm->pcap_data, pm->n_pcap_data_written),
-		 n);
-
-      if (n < 0 && unix_error_is_fatal (errno))
-	{
-	  error = clib_error_return_unix (0, "write `%s'", pm->file_name);
-	  goto done;
-	}
-      pm->n_pcap_data_written += n;
-    }
-
-  if (pm->n_pcap_data_written >= vec_len (pm->pcap_data))
-    {
-      vec_reset_length (pm->pcap_data);
-      pm->n_pcap_data_written = 0;
-    }
-
-  if (pm->n_packets_captured >= pm->n_packets_to_capture)
-    pcap_close (pm);
-
-done:
-  if (error)
-    {
-      if (pm->file_descriptor >= 0)
-	close (pm->file_descriptor);
-    }
-  return error;
-}
-
-/**
- * @brief Read PCAP file
- *
- * @return rc - clib_error_t
- *
- */
-clib_error_t *
-pcap_read (pcap_main_t * pm)
-{
-  clib_error_t *error = 0;
-  int fd, need_swap, n;
-  pcap_file_header_t fh;
-  pcap_packet_header_t ph;
-
-  fd = open (pm->file_name, O_RDONLY);
-  if (fd < 0)
-    {
-      error = clib_error_return_unix (0, "open `%s'", pm->file_name);
-      goto done;
-    }
-
-  if (read (fd, &fh, sizeof (fh)) != sizeof (fh))
-    {
-      error =
-	clib_error_return_unix (0, "read file header `%s'", pm->file_name);
-      goto done;
-    }
-
-  need_swap = 0;
-  if (fh.magic == 0xd4c3b2a1)
-    {
-      need_swap = 1;
-#define _(t,f) fh.f = clib_byte_swap_##t (fh.f);
-      foreach_pcap_file_header;
-#undef _
-    }
-
-  if (fh.magic != 0xa1b2c3d4)
-    {
-      error = clib_error_return (0, "bad magic `%s'", pm->file_name);
-      goto done;
-    }
-
-  pm->min_packet_bytes = 0;
-  pm->max_packet_bytes = 0;
-  while ((n = read (fd, &ph, sizeof (ph))) != 0)
-    {
-      u8 *data;
-      u64 timestamp;
-      u32 timestamp_sec;
-      u32 timestamp_usec;
-
-      if (need_swap)
-	{
-#define _(t,f) ph.f = clib_byte_swap_##t (ph.f);
-	  foreach_pcap_packet_header;
-#undef _
-	}
-
-      data = vec_new (u8, ph.n_bytes_in_packet);
-      if (read (fd, data, ph.n_packet_bytes_stored_in_file) !=
-	  ph.n_packet_bytes_stored_in_file)
-	{
-	  error = clib_error_return (0, "short read `%s'", pm->file_name);
-	  goto done;
-	}
-
-      if (vec_len (pm->packets_read) == 0)
-	pm->min_packet_bytes = pm->max_packet_bytes = ph.n_bytes_in_packet;
-      else
-	{
-	  pm->min_packet_bytes =
-	    clib_min (pm->min_packet_bytes, ph.n_bytes_in_packet);
-	  pm->max_packet_bytes =
-	    clib_max (pm->max_packet_bytes, ph.n_bytes_in_packet);
-	}
-
-      timestamp_sec = ph.time_in_sec;
-      timestamp_usec = ph.time_in_usec;
-      timestamp = ((u64) timestamp_sec) * 1000000 + (u64) timestamp_usec;
-      vec_add1 (pm->packets_read, data);
-      vec_add1 (pm->timestamps, timestamp);
-    }
-
-done:
-  if (fd >= 0)
-    close (fd);
-  return error;
-
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */