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| author | Tony Ambardar <itugrok@yahoo.com> | 2018-12-17 21:29:33 -0800 |
|---|---|---|
| committer | Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk> | 2019-02-11 20:18:48 +0000 |
| commit | a7370b5179f5c9793fb18d087955f51d9c080715 (patch) | |
| tree | 84e1bb573cbe269c05a40136e73ab9730ea432cc /package/base-files | |
| parent | ebcd5226cc0dc1e13531c42c55acba553db6111b (diff) | |
| download | upstream-a7370b5179f5c9793fb18d087955f51d9c080715.tar.gz upstream-a7370b5179f5c9793fb18d087955f51d9c080715.tar.bz2 upstream-a7370b5179f5c9793fb18d087955f51d9c080715.zip | |
kernel: enable CONFIG_BPF_JIT by default
Enable the built-in BPF JIT compiler for all 4.9, 4.14 and 4.19 kernels,
which should speed up cBPF and eBPF-based packet filtering (tc, iptables)
and packet sniffing (libpcap, tcpdump, fwknopd, etc).
This has minimal kernel size impact, increasing the size of uImage-lzma
(normally ~2 MB on mips_24kc or mips64el_mips64) by 5 KB for the MIPS32
arch cBPF JIT and by 9 KB for the MIPS64 arch eBPF JIT, on kernel 4.14.
With JIT enabled (cBPF only), the standard BPF test module (test_bpf.ko)
running on a DIR-835 (mips_24kc) used 33 CPU seconds, but 68 without JIT.
This change aligns with the notion of OpenWRT as the network go-to swiss
army knife for packet handling, especially on CPU-constrained platforms.
Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
Diffstat (limited to 'package/base-files')
0 files changed, 0 insertions, 0 deletions