add a bridge-router-bridge test with router implemented as a namespace

Signed-off-by: Yonghong Song <yhs@plumgrid.com>

start building FAQ

Omit leading 'v' from python .tar.gz revision

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

build without have to install llvm/clang

just update PATH to include 'llvm-config' from your local
llvm build directory.
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>

Drop 'experimental' from README.md

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

Make installation prefixes more realistic

* Add/document cmake variables that control various installation path
  options. See README.md for examples.
* Updated README a bit
* Hide helpers.h from include requirements
* Install things to real paths in a proper way. Header files will go
  into <prefix>/share/bcc/include.
* Move the kickstart script readme to its own directory.
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

fix build with gcc < 4.9

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>

Fix test_call1 for systems without default qdisc

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

Fix test_xlate1 when systems have no default tc

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

Remove BPF_LL_OFF usage

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

Add python packaging for the bpf library

* Add tagging/git support
* Reorganize bpf py lib to be more pythonic
* Add pip installable builders
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Add simple single file example

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

Update license in source code to be Apache 2

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

Convert to using pyroute2 for tc

* Remove libbpf.c netlink
* Requires pyroute2 from source
 git clone https://github.com/svinota/pyroute2.git;
          cd pyroute2; sudo make install

Update: Remove references to mnl
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Rename files and a few functions

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

Add support for packet field write

* Rewrite LValue packet dereference to bpf_dins
* Add incr_csum as a macro
* Update names of a few functions
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Return 0 in lookup_or_init error path

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

Add packet read syntax to c parser

* C macro-based state machine
* Add lookup_or_init helper routine instead of array syntax
* Recognize references to protocol headers and translate into dext call
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Fix a python (version 2.7.3) error

Signed-off-by: Yonghong Song <yhs@plumgrid.com>