linux/net/bpfilter/Kconfig
Valdis Kl ē tnieks 9f64fbdb77 bpfilter: document build requirements for bpfilter_umh
It's not intuitively obvious that bpfilter_umh is a statically linked binary.
Mention the toolchain requirement in the Kconfig help, so people
have an easier time figuring out what's needed.

Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-05-26 00:03:16 +09:00

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# SPDX-License-Identifier: GPL-2.0-only
menuconfig BPFILTER
bool "BPF based packet filtering framework (BPFILTER)"
depends on NET && BPF && INET
help
This builds experimental bpfilter framework that is aiming to
provide netfilter compatible functionality via BPF
if BPFILTER
config BPFILTER_UMH
tristate "bpfilter kernel module with user mode helper"
depends on CC_CAN_LINK_STATIC
default m
help
This builds bpfilter kernel module with embedded user mode helper
Note: your toolchain must support building static binaries, since
rootfs isn't mounted at the time when __init functions are called
and do_execv won't be able to find the elf interpreter.
endif