mirror of
https://github.com/torvalds/linux.git
synced 2024-12-03 01:21:28 +00:00
17edea21b3
Currently sock_map still has Kconfig dependency on CONFIG_INET, but there is no actual functional dependency on it after we introduce ->psock_update_sk_prot(). We have to extend it to CONFIG_NET now as we are going to support AF_UNIX. Signed-off-by: Cong Wang <cong.wang@bytedance.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20210704190252.11866-2-xiyou.wangcong@gmail.com
90 lines
2.6 KiB
Plaintext
90 lines
2.6 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
|
|
|
|
# BPF interpreter that, for example, classic socket filters depend on.
|
|
config BPF
|
|
bool
|
|
|
|
# Used by archs to tell that they support BPF JIT compiler plus which
|
|
# flavour. Only one of the two can be selected for a specific arch since
|
|
# eBPF JIT supersedes the cBPF JIT.
|
|
|
|
# Classic BPF JIT (cBPF)
|
|
config HAVE_CBPF_JIT
|
|
bool
|
|
|
|
# Extended BPF JIT (eBPF)
|
|
config HAVE_EBPF_JIT
|
|
bool
|
|
|
|
# Used by archs to tell that they want the BPF JIT compiler enabled by
|
|
# default for kernels that were compiled with BPF JIT support.
|
|
config ARCH_WANT_DEFAULT_BPF_JIT
|
|
bool
|
|
|
|
menu "BPF subsystem"
|
|
|
|
config BPF_SYSCALL
|
|
bool "Enable bpf() system call"
|
|
select BPF
|
|
select IRQ_WORK
|
|
select TASKS_TRACE_RCU
|
|
select BINARY_PRINTF
|
|
select NET_SOCK_MSG if NET
|
|
default n
|
|
help
|
|
Enable the bpf() system call that allows to manipulate BPF programs
|
|
and maps via file descriptors.
|
|
|
|
config BPF_JIT
|
|
bool "Enable BPF Just In Time compiler"
|
|
depends on BPF
|
|
depends on HAVE_CBPF_JIT || HAVE_EBPF_JIT
|
|
depends on MODULES
|
|
help
|
|
BPF programs are normally handled by a BPF interpreter. This option
|
|
allows the kernel to generate native code when a program is loaded
|
|
into the kernel. This will significantly speed-up processing of BPF
|
|
programs.
|
|
|
|
Note, an admin should enable this feature changing:
|
|
/proc/sys/net/core/bpf_jit_enable
|
|
/proc/sys/net/core/bpf_jit_harden (optional)
|
|
/proc/sys/net/core/bpf_jit_kallsyms (optional)
|
|
|
|
config BPF_JIT_ALWAYS_ON
|
|
bool "Permanently enable BPF JIT and remove BPF interpreter"
|
|
depends on BPF_SYSCALL && HAVE_EBPF_JIT && BPF_JIT
|
|
help
|
|
Enables BPF JIT and removes BPF interpreter to avoid speculative
|
|
execution of BPF instructions by the interpreter.
|
|
|
|
config BPF_JIT_DEFAULT_ON
|
|
def_bool ARCH_WANT_DEFAULT_BPF_JIT || BPF_JIT_ALWAYS_ON
|
|
depends on HAVE_EBPF_JIT && BPF_JIT
|
|
|
|
config BPF_UNPRIV_DEFAULT_OFF
|
|
bool "Disable unprivileged BPF by default"
|
|
depends on BPF_SYSCALL
|
|
help
|
|
Disables unprivileged BPF by default by setting the corresponding
|
|
/proc/sys/kernel/unprivileged_bpf_disabled knob to 2. An admin can
|
|
still reenable it by setting it to 0 later on, or permanently
|
|
disable it by setting it to 1 (from which no other transition to
|
|
0 is possible anymore).
|
|
|
|
source "kernel/bpf/preload/Kconfig"
|
|
|
|
config BPF_LSM
|
|
bool "Enable BPF LSM Instrumentation"
|
|
depends on BPF_EVENTS
|
|
depends on BPF_SYSCALL
|
|
depends on SECURITY
|
|
depends on BPF_JIT
|
|
help
|
|
Enables instrumentation of the security hooks with BPF programs for
|
|
implementing dynamic MAC and Audit Policies.
|
|
|
|
If you are unsure how to answer this question, answer N.
|
|
|
|
endmenu # "BPF subsystem"
|