Currently, there are many programs under samples/bpf to test the various functionality of BPF that have been developed for a long time. However, the kernel (BPF) has changed a lot compared to the 2016 when some of these test programs were first introduced. Therefore, some of these programs use the deprecated function of BPF, and some programs no longer work normally due to changes in the API. To list some of the kernel changes that this patch set is focusing on, - legacy BPF map declaration syntax support had been dropped [1] - bpf_trace_printk() always append newline at the end [2] - deprecated styled BPF section header (bpf_load style) [3] - urandom_read tracepoint is removed (used for testing overhead) [4] - ping sends packet with SOCK_DGRAM instead of SOCK_RAW [5]* - use "vmlinux.h" instead of including individual headers In addition to this, this patchset tries to modernize the existing testing scripts a bit. And for network-related testing programs, a separate header file was created and applied. (To use the Endianness conversion function from xdp_sample and bunch of constants) [1]: https://github.com/libbpf/libbpf/issues/282 [2]: commit ac5a72ea5c89 ("bpf: Use dedicated bpf_trace_printk event instead of trace_printk()") [3]: commit ceb5dea56543 ("samples: bpf: Remove bpf_load loader completely") [4]: commit 14c174633f34 ("random: remove unused tracepoints") [5]: https://lwn.net/Articles/422330/ *: This is quite old, but I'm not sure why the code was initially developed to filter only SOCK_RAW. Daniel T. Lee (10): samples/bpf: ensure ipv6 is enabled before running tests samples/bpf: refactor BPF functionality testing scripts samples/bpf: fix broken lightweight tunnel testing samples/bpf: fix broken cgroup socket testing samples/bpf: replace broken overhead microbenchmark with fib_table_lookup samples/bpf: replace legacy map with the BTF-defined map samples/bpf: split common macros to net_shared.h samples/bpf: replace BPF programs header with net_shared.h samples/bpf: use vmlinux.h instead of implicit headers in BPF test program samples/bpf: change _kern suffix to .bpf with BPF test programs samples/bpf/Makefile | 14 +++--- ...lwt_len_hist_kern.c => lwt_len_hist.bpf.c} | 29 +++-------- samples/bpf/lwt_len_hist.sh | 4 +- samples/bpf/net_shared.h | 32 ++++++++++++ .../{sock_flags_kern.c => sock_flags.bpf.c} | 24 ++++----- samples/bpf/tc_l2_redirect.sh | 3 ++ samples/bpf/test_cgrp2_sock.sh | 16 +++--- samples/bpf/test_cgrp2_sock2.sh | 9 +++- ...st_cgrp2_tc_kern.c => test_cgrp2_tc.bpf.c} | 34 ++++--------- samples/bpf/test_cgrp2_tc.sh | 8 +-- samples/bpf/test_lwt_bpf.c | 50 ++++++++----------- samples/bpf/test_lwt_bpf.sh | 19 ++++--- ...ap_in_map_kern.c => test_map_in_map.bpf.c} | 7 +-- samples/bpf/test_map_in_map_user.c | 2 +- ...robe_kern.c => test_overhead_kprobe.bpf.c} | 6 +-- ...w_tp_kern.c => test_overhead_raw_tp.bpf.c} | 4 +- ...rhead_tp_kern.c => test_overhead_tp.bpf.c} | 29 +++++++---- samples/bpf/test_overhead_user.c | 34 ++++++++----- samples/bpf/xdp_sample.bpf.h | 22 +------- 19 files changed, 179 insertions(+), 167 deletions(-) rename samples/bpf/{lwt_len_hist_kern.c => lwt_len_hist.bpf.c} (75%) create mode 100644 samples/bpf/net_shared.h rename samples/bpf/{sock_flags_kern.c => sock_flags.bpf.c} (66%) rename samples/bpf/{test_cgrp2_tc_kern.c => test_cgrp2_tc.bpf.c} (70%) rename samples/bpf/{test_map_in_map_kern.c => test_map_in_map.bpf.c} (97%) rename samples/bpf/{test_overhead_kprobe_kern.c => test_overhead_kprobe.bpf.c} (92%) rename samples/bpf/{test_overhead_raw_tp_kern.c => test_overhead_raw_tp.bpf.c} (82%) rename samples/bpf/{test_overhead_tp_kern.c => test_overhead_tp.bpf.c} (61%) -- 2.34.1
