From 98e20e5e13d2811898921f999288be7151a11954 Mon Sep 17 00:00:00 2001 From: Quentin Deslandes Date: Tue, 26 Dec 2023 14:07:42 +0100 Subject: bpfilter: remove bpfilter bpfilter was supposed to convert iptables filtering rules into BPF programs on the fly, from the kernel, through a usermode helper. The base code for the UMH was introduced in 2018, and couple of attempts (2, 3) tried to introduce the BPF program generate features but were abandoned. bpfilter now sits in a kernel tree unused and unusable, occasionally causing confusion amongst Linux users (4, 5). As bpfilter is now developed in a dedicated repository on GitHub (6), it was suggested a couple of times this year (LSFMM/BPF 2023, LPC 2023) to remove the deprecated kernel part of the project. This is the purpose of this patch. [1]: https://lore.kernel.org/lkml/20180522022230.2492505-1-ast@kernel.org/ [2]: https://lore.kernel.org/bpf/20210829183608.2297877-1-me@ubique.spb.ru/#t [3]: https://lore.kernel.org/lkml/20221224000402.476079-1-qde@naccy.de/ [4]: https://dxuuu.xyz/bpfilter.html [5]: https://github.com/linuxkit/linuxkit/pull/3904 [6]: https://github.com/facebook/bpfilter Signed-off-by: Quentin Deslandes Link: https://lore.kernel.org/r/20231226130745.465988-1-qde@naccy.de Signed-off-by: Alexei Starovoitov --- tools/bpf/bpftool/feature.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'tools/bpf') diff --git a/tools/bpf/bpftool/feature.c b/tools/bpf/bpftool/feature.c index edda4fc2c4d0..708733b0ea06 100644 --- a/tools/bpf/bpftool/feature.c +++ b/tools/bpf/bpftool/feature.c @@ -426,10 +426,6 @@ static void probe_kernel_image_config(const char *define_prefix) { "CONFIG_BPF_STREAM_PARSER", }, /* xt_bpf module for passing BPF programs to netfilter */ { "CONFIG_NETFILTER_XT_MATCH_BPF", }, - /* bpfilter back-end for iptables */ - { "CONFIG_BPFILTER", }, - /* bpftilter module with "user mode helper" */ - { "CONFIG_BPFILTER_UMH", }, /* test_bpf module for BPF tests */ { "CONFIG_TEST_BPF", }, -- cgit v1.2.3