bbrplus-6.x_stable

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bbrplus-6.x_stable

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Linux bbrplus kernel 6.x stable (non-LTS) ported from bbrplus 4.14

bbrplus-6.x_stable 최신버젼 다운로드

최종 버전 다운로드 (.zip)

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# bbrplus-6.x_stable
Linux BBRplus Kernel 6.x Stable (non-LTS) ported from BBRplus 4.14 
(note that it does NOT based on 6.x version of BBR, instead just simple ported the 4.14 version of BBRplus)

***based on original version*** 
https://github.com/cx9208/bbrplus

## some improvements as Aug-2023

### i) merged official tcp_bbr patches between 2018-2023 into bbrplus 
### ii) keep official tcp_bbr module, so may use either 
```sh
net.ipv4.tcp_congestion_control = bbrplus
net.core.default_qdisc = fq
```
or
```sh
net.ipv4.tcp_congestion_control = bbr
net.core.default_qdisc = fq
```
in the `/etc/sysctl.conf` file. &nbsp;&nbsp; ( `fq` is the only recommended packet scheduler, do not use `fq_codel` `fq_pie` `cake` etc )

## patch & build bbrplus kernel youself
(or you can use releases compiled by me in "Releases" section) 
 
***(build requirement to GCC is >= 4.9, so GCC upgrade is needed if use CentOS 7.x as builder)***

### 1) get convert patch on this repository, use git or direct download
        (e.g., convert_official_linux-6.4.x_src_to_bbrplus.patch)

### 2) download officaial linux kernel
        say 6.4.12       
            wget https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-6.4.12.tar.xz

### 3) extract the tarball & cd extracted directory
        tar xvf linux-6.4.12.tar.xz && cd linux-6.4.12

### 4) copy convert patch to extracted kernel directory
        something like
            cp ../convert_official_linux-6.4.x_src_to_bbrplus.patch .

### 5) do the patch job
 patch -p1 < convert_official_linux-6.4.x_src_to_bbrplus.patch

(if no error or failed on previous step)
### 6) install dependencies for building kernels

***CentOS***  
sudo yum groupinstall Development tools  
sudo yum install ncurses-devel bc gcc gcc-c++ ncurses ncurses-devel cmake elfutils-libelf-devel openssl-devel rpm-build redhat-rpm-config asciidoc hmaccalc perl-ExtUtils-Embed xmlto audit-libs-devel binutils-devel elfutils-devel elfutils-libelf-devel newt-devel python-devel zlib-devel

press "y" key when asked

***Debian/Ubuntu***  
sudo apt install build-essential libncurses5-dev  
sudo apt build-dep linux

press "y" key when asked

### 7) config build parameters based on current kernel settings
        make oldconfig

***(Note: If using CentOS 7.x with Xen Virtualization, ya have to set CONFIG_XEN_BLKDEV_FRONTEND=y, otherwise VMs won't boot.)***

press Enter key when asked (if dont know what is what)

### 8) disable debug info & module signing
        scripts/config --disable SECURITY_LOCKDOWN_LSM
        scripts/config --disable DEBUG_INFO
        scripts/config --disable MODULE_SIG

### 9) build kernel

***CentOS***   
make rpm-pkg LOCALVERSION=-bbrplus 2>&1 | tee build.log

***Debian/Ubuntu***  
make deb-pkg LOCALVERSION=-bbrplus 2>&1 | tee build.log

if anything goes wrong check the "build.log" file

(if not failed on previous step)
### 10) collect kernel package files, do test on some other Linux machine

***CentOS files***   
located in  
/"user home dir"/rpmbuild/RPMS/x86_64/

***Debian/Ubuntu files***  
located in  
parent directory

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