a7370b5179
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>
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|__| W I R E L E S S F R E E D O M
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This is the buildsystem for the OpenWrt Linux distribution.
To build your own firmware you need a Linux, BSD or MacOSX system (case
sensitive filesystem required). Cygwin is unsupported because of the lack
of a case sensitive file system.
You need gcc, binutils, bzip2, flex, python, perl, make, find, grep, diff,
unzip, gawk, getopt, subversion, libz-dev and libc headers installed.
1. Run "./scripts/feeds update -a" to obtain all the latest package definitions
defined in feeds.conf / feeds.conf.default
2. Run "./scripts/feeds install -a" to install symlinks for all obtained
packages into package/feeds/
3. Run "make menuconfig" to select your preferred configuration for the
toolchain, target system & firmware packages.
4. Run "make" to build your firmware. This will download all sources, build
the cross-compile toolchain and then cross-compile the Linux kernel & all
chosen applications for your target system.
Sunshine!
Your OpenWrt Community
http://www.openwrt.org