tweewide: Fix most Shebang lines

Change every shebang which does not need an argument to use /usr/bin/env.
This is needed as not every distro has everything under /usr/bin,
sometimes not even bash.

Signed-off-by: Finn Behrens <me@kloenk.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

selftests: fix flower parent qdisc

Flower tests used to create ingress filter with specified parent qdisc
"parent ffff:" but dump them on "ingress". With recent commit that fixed
tcm_parent handling in dump those are not considered same parent anymore,
which causes iproute2 tc to emit additional "parent ffff:" in first line of
filter dump output. The change in output causes filter match in tests to
fail.

Prevent parent qdisc output when dumping filters in flower tests by always
correctly specifying "ingress" parent both when creating and dumping
filters.

Fixes: a7df4870d79b ("net_sched: fix tcm_parent in tc filter dump")
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: tdc_batch.py: add options needed for concurrency tests

Extend tdc_batch.py with several optional CLI arguments that are used for
implementation of concurrency tests in following patches in this set:

- Add optional argument to specify range of filter handles used in batch
file [fitler_handle, filter_handle+number). This is needed for testing
filter deletion where it is necessary to know exact handles of configured
filters.

- Add optional argument to specify filter operation type (possible values
are ['add', 'del', 'replace']) instead of hardcoded "add" value. This
allows generation of batches for filter addition, deletion and
replacement.

- Add optional argument to allow user to change mac address prefix that is
used for all filters in batch. This is necessary to allow generating
multiple batches with unique flower classifier keys.

Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tc: python3, string formattings

This patch converts old type string formattings to new type string
formattings for adapting Linux Traffic Control (tc) unit testing suite
python3.

Linux Traffic Control (tc) unit testing suite's code quality improved is improved with this patch.
According to python documentation;
"The built-in string class provides the ability to do complex variable substitutions and
value formatting via the format() method described in PEP 3101. "
but the project was using old type formattings and new type string formattings together,
this patch's main purpose is converting all old types to new types.

Following files changed:
1. tools/testing/selftests/tc-testing/tdc.py
2. tools/testing/selftests/tc-testing/tdc_batch.py

Following PEP rules applied:
1. PEP8 - Code Styling
2. PEP3101 - Advanced Code Formatting

Signed-off-by: Batuhan Osman Taskaya <batuhanosmantaskaya@gmail.com>

Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: Introduce a new script to generate tc batch file

# ./tdc_batch.py -h
usage: tdc_batch.py [-h] [-n NUMBER] [-o] [-s] [-p] device file

TC batch file generator

positional arguments:
device device name
file batch file name

optional arguments:
-h, --help show this help message and exit
-n NUMBER, --number NUMBER
how many lines in batch file
-o, --skip_sw skip_sw (offload), by default skip_hw
-s, --share_action all filters share the same action
-p, --prio all filters have different prio

Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Lucas Bates <lucasb@mojatatu.com>
Signed-off-by: Chris Mi <chrism@mellanox.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>