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Makefile c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
Makefile.target c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
README.rst c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
asm_goto_workaround.h c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
bpf_insn.h c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
bpf_load.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
bpf_load.h c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
cookie_uid_helper_example.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
cpustat_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
cpustat_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
do_hbm_test.sh c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
fds_example.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
hash_func01.h c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
hbm.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
hbm.h c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
hbm_edt_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
hbm_kern.h c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
hbm_out_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
ibumad_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
ibumad_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
lathist_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
lathist_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
lwt_len_hist.sh c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
lwt_len_hist_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
lwt_len_hist_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
map_perf_test_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
map_perf_test_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
offwaketime_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
offwaketime_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
parse_ldabs.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
parse_simple.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
parse_varlen.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
run_cookie_uid_helper_example.sh c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
sampleip_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
sampleip_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
sock_example.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
sock_example.h c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
sock_flags_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
sockex1_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
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spintest_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
spintest_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
syscall_nrs.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
syscall_tp_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
syscall_tp_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
task_fd_query_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
task_fd_query_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tc_l2_redirect.sh c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tc_l2_redirect_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tc_l2_redirect_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tcbpf1_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tcp_basertt_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tcp_bpf.readme c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tcp_bufs_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tcp_clamp_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tcp_cong_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tcp_dumpstats_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tcp_iw_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tcp_rwnd_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tcp_synrto_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tcp_tos_reflect_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_cgrp2_array_pin.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_cgrp2_attach.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_cgrp2_sock.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_cgrp2_sock.sh c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_cgrp2_sock2.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_cgrp2_sock2.sh c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_cgrp2_tc.sh c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_cgrp2_tc_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_cls_bpf.sh c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_current_task_under_cgroup_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_current_task_under_cgroup_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_ipip.sh c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_lru_dist.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_lwt_bpf.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_lwt_bpf.sh c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_map_in_map_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_map_in_map_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_overhead_kprobe_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_overhead_raw_tp_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_overhead_tp_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_overhead_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_override_return.sh c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_probe_write_user_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
test_probe_write_user_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
trace_common.h c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
trace_event_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
trace_event_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
trace_output_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
trace_output_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tracex1_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tracex1_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tracex2_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tracex2_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tracex3_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tracex3_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tracex4_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tracex4_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tracex5_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
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tracex6_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
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tracex7_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
tracex7_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp1_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp1_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp2_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp2skb_meta.sh c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp2skb_meta_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_adjust_tail_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_adjust_tail_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_fwd_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_fwd_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_monitor_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_monitor_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_redirect_cpu_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_redirect_cpu_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_redirect_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_redirect_map_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_redirect_map_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_redirect_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_router_ipv4_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_router_ipv4_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_rxq_info_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_rxq_info_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_sample_pkts_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_sample_pkts_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_tx_iptunnel_common.h c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_tx_iptunnel_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdp_tx_iptunnel_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdpsock.h c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdpsock_kern.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xdpsock_user.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago
xsk_fwd.c c9df2bbe57 Linux_SDK_V0.9.5 1 year ago

README.rst

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

This directory contains a test stubs, verifier test-suite and examples
for using eBPF. The examples use libbpf from tools/lib/bpf.

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``

Clean and configuration
-----------------------

It can be needed to clean tools, samples or kernel before trying new arch or
after some changes (on demand)::

make -C tools clean
make -C samples/bpf clean
make clean

Configure kernel, defconfig for instance::

make defconfig

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 M=samples/bpf

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

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

Cross compiling samples
-----------------------
In order to cross-compile, say for arm64 targets, export CROSS_COMPILE and ARCH
environment variables before calling make. But do this before clean,
cofiguration and header install steps described above. This will direct make to
build samples for the cross target::

export ARCH=arm64
export CROSS_COMPILE="aarch64-linux-gnu-"

Headers can be also installed on RFS of target board if need to keep them in
sync (not necessarily and it creates a local "usr/include" directory also)::

make INSTALL_HDR_PATH=~/some_sysroot/usr headers_install

Pointing LLC and CLANG is not necessarily if it's installed on HOST and have
in its targets appropriate arm64 arch (usually it has several arches).
Build samples::

make M=samples/bpf

Or build samples with SYSROOT if some header or library is absent in toolchain,
say libelf, providing address to file system containing headers and libs,
can be RFS of target board::

make M=samples/bpf SYSROOT=~/some_sysroot