If debug level for "frames" is 2 or more, net_ops->send and
net_ops->recv now dump the data to stdout. The format is the same
of tools/ptpdump, with "send:" and "recv:" in front. This is an example:

  send: TIME: (1363277414 - 0x5141f666) 17:10:14.748281
  send: VERSION: 2 (type 11, len 64, domain 0)
  send: FLAGS: 0x0002 (correction 0x00000000)
  send: PORT: 00-22-15-ff-fe-d7-c0-ef-00-01
  send: REST: seq 9, ctrl 5, log-interval 1
  send: MESSAGE: (G) ANNOUNCE
  send: MSG-ANNOUNCE: stamp 0.000000000
  send: MSG-ANNOUNCE: grandmaster-quality f8-fe-60f0
  send: MSG-ANNOUNCE: grandmaster-prio 248 248
  send: MSG-ANNOUNCE: grandmaster-id 00-22-15-ff-fe-d7-c0-ef
  send: DUMP: payload (size 64)
  send: DUMP: 8b 02 00 40  00 00 02 00  00 00 00 00  00 00 00 00
  send: DUMP: 00 00 00 00  00 22 15 ff  fe d7 c0 ef  00 01 00 09
  send: DUMP: 05 01 00 00  00 00 00 00  00 00 00 00  00 00 11 f8
  send: DUMP: f8 fe f0 60  f8 00 22 15  ff fe d7 c0  ef 00 00 a0
  diag-frames-1-eth0: SENT 64 bytes at 1363277414.748281517 (announce)

And this is the same frame in the other host:

  recv: TIME: (1363277414 - 0x5141f666) 17:10:14.691032
  recv: VERSION: 2 (type 11, len 64, domain 0)
  recv: FLAGS: 0x0002 (correction 0x00000000)
  recv: PORT: 00-22-15-ff-fe-d7-c0-ef-00-01
  recv: REST: seq 9, ctrl 5, log-interval 1
  recv: MESSAGE: (G) ANNOUNCE
  recv: MSG-ANNOUNCE: stamp 0.000000000
  recv: MSG-ANNOUNCE: grandmaster-quality f8-fe-60f0
  recv: MSG-ANNOUNCE: grandmaster-prio 248 248
  recv: MSG-ANNOUNCE: grandmaster-id 00-22-15-ff-fe-d7-c0-ef
  recv: DUMP: payload (size 64)
  recv: DUMP: 8b 02 00 40  00 00 02 00  00 00 00 00  00 00 00 00
  recv: DUMP: 00 00 00 00  00 22 15 ff  fe d7 c0 ef  00 01 00 09
  recv: DUMP: 05 01 00 00  00 00 00 00  00 00 00 00  00 00 11 f8
  recv: DUMP: f8 fe f0 60  f8 00 22 15  ff fe d7 c0  ef 00 00 a0
  diag-frames-1-eth0: RECV 64 bytes at 1363277414.691032726 (type b)

This is what I got for the same frame in a ptpdump running in the
master.

  TIME: (1363277414 - 0x5141f666) 17:10:14.748376
  ETH: 0800 (00:22:15:d7:c0:ef -> 01:00:5e:00:01:81)
  IP: 17 (192.168.16.1 -> 224.0.1.129) len 92
  UDP: (320 -> 320) len 72
  VERSION: 2 (type 11, len 64, domain 0)
  FLAGS: 0x0002 (correction 0x00000000)
  PORT: 00-22-15-ff-fe-d7-c0-ef-00-01
  REST: seq 9, ctrl 5, log-interval 1
  MESSAGE: (G) ANNOUNCE
  MSG-ANNOUNCE: stamp 0.000000000
  MSG-ANNOUNCE: grandmaster-quality f8-fe-60f0
  MSG-ANNOUNCE: grandmaster-prio 248 248
  MSG-ANNOUNCE: grandmaster-id 00-22-15-ff-fe-d7-c0-ef
  DUMP: payload (size 64)
  DUMP: 8b 02 00 40  00 00 02 00  00 00 00 00  00 00 00 00
  DUMP: 00 00 00 00  00 22 15 ff  fe d7 c0 ef  00 01 00 09
  DUMP: 05 01 00 00  00 00 00 00  00 00 00 00  00 00 11 f8
  DUMP: f8 fe f0 60  f8 00 22 15  ff fe d7 c0  ef 00 00 a0
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>