dts: remove redundant test suite

The test suite served as a demonstration of the Scapy traffic generator
implementation. Now that we have a test suite that uses DPDK code (via
testpmd), there is no

dts: remove redundant test suite

The test suite served as a demonstration of the Scapy traffic generator
implementation. Now that we have a test suite that uses DPDK code (via
testpmd), there is no reason to keep the test suite, as there's no
expectation it'll be actually used in any setup.

Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
Signed-off-by: Paul Szczepanek <paul.szczepanek@arm.com>
Reviewed-by: Luca Vizzarro <luca.vizzarro@arm.com>
Reviewed-by: Patrick Robb <probb@iol.unh.edu>

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dts: add admin privileges to hugepage mounting

There were two different commands in the hugepage mounting process that
were not using super-user privileges; one for unmounting hugepages and
another

dts: add admin privileges to hugepage mounting

There were two different commands in the hugepage mounting process that
were not using super-user privileges; one for unmounting hugepages and
another for re-mounting them. This patch adds the flag that enables
enhanced permissions for both of these actions.

Bugzilla ID: 1439
Fixes: b8bdc4c58f57 ("dts: replace pexpect with fabric")

Signed-off-by: Jeremy Spewock <jspewock@iol.unh.edu>
Reviewed-by: Nicholas Pratte <npratte@iol.unh.edu>
Reviewed-by: Luca Vizzarro <luca.vizzarro@arm.com>
Reviewed-by: Juraj Linkeš <juraj.linkes@pantheon.tech>

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dts: rename hugepage config parameter

The term 'amount' is used for uncountable nouns. Since total hugepages
is a discrete value (i.e. countable), the declaration of the 'amount'
key value pair shou

dts: rename hugepage config parameter

The term 'amount' is used for uncountable nouns. Since total hugepages
is a discrete value (i.e. countable), the declaration of the 'amount'
key value pair should be changes to a different term in both the config
and the rest of the code.

Bugzilla ID: 1370

Signed-off-by: Nicholas Pratte <npratte@iol.unh.edu>
Reviewed-by: Jeremy Spewock <jspewock@iol.unh.edu>
Reviewed-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
Reviewed-by: Luca Vizzarro <luca.vizzarro@arm.com>

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dts: use exclusively 2MB hugepage in config

The previous implementation configures and allocates hugepage sizes
based on a system default. This can lead to two problems: overallocation of
hugepages

dts: use exclusively 2MB hugepage in config

The previous implementation configures and allocates hugepage sizes
based on a system default. This can lead to two problems: overallocation of
hugepages (which may crash the remote host), and configuration of hugepage
sizes that are not recommended during runtime. This new implementation
allows only 2MB hugepage allocation during runtime; any other unique
hugepage size must be configured by the end-user for initializing DTS.

If the amount of 2MB hugepages requested exceeds the amount of 2MB
hugepages already configured on the system, then the system will remount
hugepages to cover the difference. If the amount of hugepages requested is
either less than or equal to the amount already configured on the system,
then nothing is done.

Bugzilla ID: 1370

Signed-off-by: Nicholas Pratte <npratte@iol.unh.edu>
Reviewed-by: Jeremy Spewock <jspewock@iol.unh.edu>
Reviewed-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
Reviewed-by: Luca Vizzarro <luca.vizzarro@arm.com>

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dts: allow configuring MTU

Adds methods in both os_session and linux session to allow for setting
MTU of port interfaces so that suites that require the sending and
receiving of packets of a specifi

dts: allow configuring MTU

Adds methods in both os_session and linux session to allow for setting
MTU of port interfaces so that suites that require the sending and
receiving of packets of a specific size, or the rejection of packets
over a certain size, can configure this maximum as needed.

Signed-off-by: Jeremy Spewock <jspewock@iol.unh.edu>
Reviewed-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
Tested-by: Patrick Robb <probb@iol.unh.edu>

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dts: update docstrings

Format according to the Google format and PEP257, with slight
deviations.

Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>

dts: adjust code for doc generation

The standard Python tool for generating API documentation, Sphinx,
imports modules one-by-one when generating the documentation. This
requires code changes:
* pro

dts: adjust code for doc generation

The standard Python tool for generating API documentation, Sphinx,
imports modules one-by-one when generating the documentation. This
requires code changes:
* properly guarding argument parsing in the if __name__ == '__main__'
block,
* the logger used by DTS runner underwent the same treatment so that it
doesn't create log files outside of a DTS run,
* however, DTS uses the arguments to construct an object holding global
variables. The defaults for the global variables needed to be moved
from argument parsing elsewhere,
* importing the remote_session module from framework resulted in
circular imports because of one module trying to import another
module. This is fixed by reorganizing the code,
* some code reorganization was done because the resulting structure
makes more sense, improving documentation clarity.

The are some other changes which are documentation related:
* added missing type annotation so they appear in the generated docs,
* reordered arguments in some methods,
* removed superfluous arguments and attributes,
* change private functions/methods/attributes to private and vice-versa.

The above all appear in the generated documentation and the with them,
the documentation is improved.

Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>

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