Re: [PATCH v1 bpf-next 1/8] selftests/bpf: Introduce sock_addr_testmod

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On Fri, Mar 29, 2024 at 12:20 PM Jordan Rife <jrife@xxxxxxxxxx> wrote:
>
> sock_addr_testmod provides a mechanism for the sock_addr_kern prog_test
> to drive socket operations in kernel space. On init, one of the
> following socket operations is performed based on the module parameters:
> kernel_bind(), kernel_connect(), or sock_sendmsg()/kernel_sendmsg() and
> results are exposed through debugfs.
>
> Signed-off-by: Jordan Rife <jrife@xxxxxxxxxx>
> ---
>  tools/testing/selftests/bpf/Makefile          |  11 +-
>  .../bpf/sock_addr_testmod/.gitignore          |   6 +
>  .../selftests/bpf/sock_addr_testmod/Makefile  |  20 ++
>  .../bpf/sock_addr_testmod/sock_addr_testmod.c | 256 ++++++++++++++++++
>  4 files changed, 292 insertions(+), 1 deletion(-)
>  create mode 100644 tools/testing/selftests/bpf/sock_addr_testmod/.gitignore
>  create mode 100644 tools/testing/selftests/bpf/sock_addr_testmod/Makefile
>  create mode 100644 tools/testing/selftests/bpf/sock_addr_testmod/sock_addr_testmod.c
>
> diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
> index 3b9eb40d63436..b5d02ff724957 100644
> --- a/tools/testing/selftests/bpf/Makefile
> +++ b/tools/testing/selftests/bpf/Makefile
> @@ -132,7 +132,7 @@ TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
>         flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
>         test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \
>         xskxceiver xdp_redirect_multi xdp_synproxy veristat xdp_hw_metadata \
> -       xdp_features bpf_test_no_cfi.ko
> +       xdp_features bpf_test_no_cfi.ko sock_addr_testmod.ko
>

Do we need yet another kernel module? Can this be done as part of
existing bpf_testmod module?

>  TEST_GEN_FILES += liburandom_read.so urandom_read sign-file uprobe_multi
>
> @@ -160,6 +160,7 @@ override define CLEAN
>         $(Q)$(RM) -r $(TEST_GEN_FILES)
>         $(Q)$(RM) -r $(EXTRA_CLEAN)
>         $(Q)$(MAKE) -C bpf_testmod clean
> +       $(Q)$(MAKE) -C sock_addr_testmod clean
>         $(Q)$(MAKE) docs-clean
>  endef
>

[...]





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