No functional change.

This fixes https://github.com/nplab/packetdrill/issues/5.

When specifying INIT or INIT-ACK chunks allow the tag and the tsn
field to be omitted (meaning tag=... or tsn=... is allowed).

Inject packets containing an INIT chunk always using 0 as the verification
tag.

No functional change.

This patch add support for the PAD chunk and PAD parameter defined
in https://tools.ietf.org/html/rfc4820
This fixes https://github.com/nplab/packetdrill/issues/16

This patch adds support for the SCTP parameters defined in RFC 4960.
While there, make the syntax more consistent and make sure that
the packet printing is in line with the syntax being used.
This fixes https://github.com/nplab/packetdrill/issues/6

Move invariant code out of a loop.

When outbound HEARTBEAT chunks are observed, inject the appropriate
HEARTBEAT-ACK chunk when scripted.
While there, plug a memory leak and rename a variable for consistency.
This fixes https://github.com/nplab/packetdrill/issues/11

This disables the IPv6 payload length check for now, similar to the
hack for IPv4. Will add a fix later.

This fixes https://github.com/nplab/packetdrill/issues/7

in SACK chunks.

of duplicate TSNs in SACK chunks.

This fixes https://github.com/nplab/packetdrill/issues/1

Current limitations:
* Chunk parameters are not yet supported.
* Error causes are not yet supported.
* Chunks can't be bundled with COOKIE-ECHO chunks.
* Chunk flags are not supported.
* Chunk lengths are not supported.
* Gap reports and duplicate TSNs are not supported for SACK chunks.
* SCTP related ICMP messages are not supported.
This version is only tested in a limited way, only on FreeBSD and
only in local mode.

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>

This commit makes sure that the udp length is verified in
host byte order.

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

Fixes "make tests" on FreeBSD/arm.

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

Code to verify that the outbound on-the-wire MPLS label stacks from
the kernel under test match those from the script.

Change-Id: Ib7e4e4dc04cdd8d760c8099948f7cdda7973202a

Basic verification for outbound encapsulated packets from the kernel
under test.


Change-Id: I5efeb08fb262312ec85d257680e4df46829a38f0

The main engine for handling encapsualted packets in packetdrill,
including:

- parsing scripts with encapsulation
- parsing packets with encapsulation
- injecting packets with encapsulation

Encapsulated packets look like the following, which has an IP header,
GRE header, and then regular IP/TCP header:

+0 > ipv4 1.1.1.1 > 2.2.2.2: gre: . 1:1001(1000) ack 1

See other patches in the series for more detailed examples.


Change-Id: Ia8c7580e268f5b0347bd9d3fdc73b096f751a79d

Initial commit for the packetdrill network stack testing tool:

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



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