Ensure that there is no space before /udp().

This allows to support a mixture of encapsulated and non-encapsulated
packets in a single script file.

Sponsored by:	Netflix, Inc.

This adds support for SCTP/UDP and TCP/UDP including ICMP
support.

Sponsored by:	Netflix, Inc.

While there, remove trailing whitespaces.
This fixes https://github.com/nplab/packetdrill/issues/33.

This commit adds support for parsing SCTP packets and converting them
to strings. Currently only chunks, parameters and error causes specified
in RFC 4960 are supported. Support for other RFCs will be added in the
future.
Tested on FreeBSD (amd64 and arm) and Linux.

Signed-off-by: Michael Tuexen <tuexen@fh-muenster.de>

This commit adds support for UDPLite as specified in RFC 3828
and the corresponding socket options.
It is tested on FreeBSD 10.1 and Linux, the platforms supporting
UDPLite.

Signed-off-by: Michael Tuexen <tuexen@fh-muenster.de>

packet_buffer_to_string() needs to accont for the fact that
packet->ip_bytes does not capture the full length of the packet (in
remote mode there will be layer 2 ethernet headers as well).

Change-Id: If2c95e68071545a27078141b6ba5f98cd2c46fb9

Code to print MPLS label stacks in a human-readable format matching
the script syntax:

  mpls (label 123, tc 1, [S], ttl 255) (label 456, tc 1, [S], ttl 255)

Change-Id: I706be8aab089fbad79eabde67125345330728517

Basic support for printing encapsulation headers: IPv4, IPv6, GRE.


Change-Id: I67b9e432c98a00ba2c19ac6ea25ea35592462ea9

fmemopen(3) states that buffers opened via open_memstream should be
freed after closing the associated stream.

Signed-off-by: Mike Neilsen <mneilsen@acm.org>

Initial commit for the packetdrill network stack testing tool:

  https://code.google.com/p/packetdrill/



Signed-off-by: Neal Cardwell <ncardwell@google.com>