Jetpack/kernel/kernel-4.9/samples/bpf
dchvs 75c7968d30 Add Jetpack 4.4.1 sources
Jetson Xavier NX, Jetson TX2 Series, Jetson AGX Xavier Series, Jetson Nano, Jetson TX1 [L4T 32.4.4]
2021-01-19 20:45:17 -06:00
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Makefile Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
README.rst Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
bpf_helpers.h Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
bpf_load.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
bpf_load.h Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
fds_example.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
lathist_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
lathist_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
libbpf.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
libbpf.h Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
map_perf_test_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
map_perf_test_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
offwaketime_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
offwaketime_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
parse_ldabs.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
parse_simple.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
parse_varlen.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
sampleip_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
sampleip_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
sock_example.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
sockex1_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
sockex1_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
sockex2_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
sockex2_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
sockex3_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
sockex3_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
spintest_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
spintest_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tc_l2_redirect.sh Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tc_l2_redirect_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tc_l2_redirect_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tcbpf1_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tcbpf2_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_cgrp2_array_pin.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_cgrp2_attach.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_cgrp2_tc.sh Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_cgrp2_tc_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_cls_bpf.sh Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_current_task_under_cgroup_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_current_task_under_cgroup_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_ipip.sh Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_maps.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_overhead_kprobe_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_overhead_tp_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_overhead_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_probe_write_user_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_probe_write_user_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_tunnel_bpf.sh Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
test_verifier.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
trace_event_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
trace_event_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
trace_output_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
trace_output_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tracex1_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tracex1_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tracex2_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tracex2_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tracex3_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tracex3_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tracex4_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tracex4_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tracex5_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tracex5_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tracex6_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
tracex6_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
xdp1_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
xdp1_user.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00
xdp2_kern.c Add Jetpack 4.4.1 sources 2021-01-19 20:45:17 -06:00

README.rst

eBPF sample programs
====================

This directory contains a mini eBPF library, test stubs, verifier
test-suite and examples for using eBPF.

Build dependencies
==================

Compiling requires having installed:
 * clang >= version 3.4.0
 * llvm >= version 3.7.1

Note that LLVM's tool 'llc' must support target 'bpf', list version
and supported targets with command: ``llc --version``

Kernel headers
--------------

There are usually dependencies to header files of the current kernel.
To avoid installing devel kernel headers system wide, as a normal
user, simply call::

 make headers_install

This will creates a local "usr/include" directory in the git/build top
level directory, that the make system automatically pickup first.

Compiling
=========

For building the BPF samples, issue the below command from the kernel
top level directory::

 make samples/bpf/

Do notice the "/" slash after the directory name.

It is also possible to call make from this directory.  This will just
hide the the invocation of make as above with the appended "/".

Manually compiling LLVM with 'bpf' support
------------------------------------------

Since version 3.7.0, LLVM adds a proper LLVM backend target for the
BPF bytecode architecture.

By default llvm will build all non-experimental backends including bpf.
To generate a smaller llc binary one can use::

 -DLLVM_TARGETS_TO_BUILD="BPF"

Quick sniplet for manually compiling LLVM and clang
(build dependencies are cmake and gcc-c++)::

 $ git clone http://llvm.org/git/llvm.git
 $ cd llvm/tools
 $ git clone --depth 1 http://llvm.org/git/clang.git
 $ cd ..; mkdir build; cd build
 $ cmake .. -DLLVM_TARGETS_TO_BUILD="BPF;X86"
 $ make -j $(getconf _NPROCESSORS_ONLN)

It is also possible to point make to the newly compiled 'llc' or
'clang' command via redefining LLC or CLANG on the make command line::

 make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang