Minor change to task_switch example syntax

initial ksym() and ksymaddr()

Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Add beta RPM spec and docker script for centos

Testing buildbot
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Also, testing buildbot with this tiny change
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Add gretap support for full mesh tunnel

Signed-off-by: Wei-Chun Chao <weichunc@plumgrid.com>

Add proper debian build support, rename libbcc.so

improve examples using new features

This adds support for properly tagging the build when cmake is run not
in a git tree, which is the case when building from src-deb.
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

The cmake based build system is nice, but not quite production ready.
Move to the more painful but featureful debuild style. This is one step
towards an upstreamable package.

Rename libbpfprog (ugh) to libbcc.

Split out python-bpf and libbcc-examples into separate packages that
depend on libbcc.
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Fix print() breakage in python 2.7 environments

Fixes: #164
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Add debug flag to enable prints from kernel verifier

Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Add flag to BPF() to enable debug prints from the verifier. Use by
passing 0x2 to debug= in the constructor. Add docstring for BPF
constructor.

Also, optimize bpf_prog_load so that by default the kernel is not
asked to print the verbose output. The program will be "loaded" a second
time to capture the verifier failure message.

Fixes: #147
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Add regex support to attach_k[ret]probe

Add new event_re parameter to kprobe functions. This searches through
the list of functions/symbols in <tracefs>/available_filter_functions
for all matching functions. Every one is attached.

Add a test case for attach_k[ret]probe.

Fixes: #141
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

examples: use IPDB `wait_ip()` feature

Add field support to trace_print and friends

Add trace_readline_fields helper to parse the output of trace_pipe
Add field parsing support to trace_print. Addresses #149.
Fix typo in trace_open s/trace/tracefile/
Make nonblocking=False the default in trace_readline
Use IOError vs BlockingIOError for greater compatibility (untested)

Fixes: #149
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Fix map.clear() usage for array type maps

Calling delete on an array type map entry does not have an effect.
Instead, the entry needs to be zeroed out, since the array slot always
exists. To avoid unnecessary calls to update(), only call update() when
the map type is array-like. The type was not exposed to python up until
now, so add it.
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Add test case for clearing of maps from python

Fixes: #142
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Add BPF python helpers for reading trace_pipe

Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

more examples of b[] syntax, fix func arg passing

Add getitem api to BPF object to reference tables