安装编译环境
yum install -y ncurses-devel make gcc bc bison flex elfutils-libelf-devel openssl-devel rpm-build
yum install -y dpkg-dev #生成deb包依赖ubuntu下：
apt install build-essential libncurses-dev flex bison openssl libssl-dev dkms libelf-dev libudev-dev libpci-dev libiberty-dev autoconf下载4.14版内核：
wget https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.14.158.tar.xz
tar xf linux-4.14.158.tar.xzpatch:
diff -urN aa/include/net/inet_connection_sock.h bb/include/net/inet_connection_sock.h
--- aa/include/net/inet_connection_sock.h 2019-12-14 17:07:48.190502969 +0800
+++ bb/include/net/inet_connection_sock.h 2019-12-14 17:08:06.373215456 +0800
@@ -136,8 +136,8 @@
} icsk_mtup;
u32 icsk_user_timeout;
- u64 icsk_ca_priv[88 / sizeof(u64)];
-#define ICSK_CA_PRIV_SIZE (11 * sizeof(u64))
+ u64 icsk_ca_priv[112 / sizeof(u64)];
+#define ICSK_CA_PRIV_SIZE (14 * sizeof(u64))
};
#define ICSK_TIME_RETRANS 1 /* Retransmit timer */
diff -urN aa/net/ipv4/Makefile bb/net/ipv4/Makefile
--- aa/net/ipv4/Makefile 2019-12-14 17:09:40.204731772 +0800
+++ bb/net/ipv4/Makefile 2019-12-14 17:09:47.147621995 +0800
@@ -44,7 +44,7 @@
obj-$(CONFIG_INET_UDP_DIAG) += udp_diag.o
obj-$(CONFIG_INET_RAW_DIAG) += raw_diag.o
obj-$(CONFIG_NET_TCPPROBE) += tcp_probe.o
-obj-$(CONFIG_TCP_CONG_BBR) += tcp_bbr.o
+obj-$(CONFIG_TCP_CONG_BBR) += tcp_bbrplus.o
obj-$(CONFIG_TCP_CONG_BIC) += tcp_bic.o
obj-$(CONFIG_TCP_CONG_CDG) += tcp_cdg.o
obj-$(CONFIG_TCP_CONG_CUBIC) += tcp_cubic.o
diff -urN aa/net/ipv4/tcp_output.c bb/net/ipv4/tcp_output.c
--- aa/net/ipv4/tcp_output.c 2019-12-14 17:08:48.488549518 +0800
+++ bb/net/ipv4/tcp_output.c 2019-12-14 17:08:55.061445594 +0800
@@ -1834,6 +1834,7 @@
return !after(end_seq, tcp_wnd_end(tp));
}
+EXPORT_SYMBOL(tcp_snd_wnd_test);
/* Trim TSO SKB to LEN bytes, put the remaining data into a new packet
* which is put after SKB on the list. It is very much like下载tcp_bbrplus源码：
wget -P net/ipv4/ https://raw.githubusercontent.com/cx9208/bbrplus/master/tcp_bbrplus.c打开编译选项并开启编译bbr为模块：
make menuconfig禁用签名调试：
scripts/config --disable MODULE_SIG
scripts/config --disable DEBUG_INFO编译内核生成centos rpm或ubuntu deb包，注意如果使用make rpm-pkg则每次编译前会先clean，如果重复编译会很慢！
make binrpm-pkg -j4
make bindeb-pkg -j4 开启bbrplus：
echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
echo "net.ipv4.tcp_congestion_control=bbrplus" >> /etc/sysctl.conf
sysctl -pubuntu系统禁止更新内核：
for pkg in $(dpkg -l|awk '/linux-(generic|headers|image|libc|modules)/{print $2}');do
echo $pkg;
apt-mark hold $pkg;
done20210102更新：
由于4.14内核过于老旧，新系统使用会出现兼容性问题，且新内核bbr也一直在更新优化，建议下载安装最新的内核使用。
centos安装最新内核方法：https://www.haiyun.me/archives/1139.html
ubuntu安装最新内核方法：https://www.haiyun.me/archives/1344.html
查看指定内核版本的bbr更新状态：
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/log/net/ipv4/tcp_bbr.c?h=v5.10.4
查看ubuntu内核源码bbr更新状态：
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/log/net/ipv4/tcp_bbr.c?h=Ubuntu-5.4.0-59.65
参考：
https://github.com/cx9208/bbrplus
https://blog.csdn.net/dog250/article/details/80629551
标签：bbr, bbrplus, 编译ubuntu内核, 编译bbrplus内核
大佬,请问debian9编译错误怎么解决? github有人提问,没人解答,只好来这里看看.
prefix ## suffix(); \
^~~~~~
./include/linux/compiler.h:331:2: note: in expansion of macro ‘_compiletime_assert’
_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
^~~~~~~~~~~~~~~~~~~
./include/linux/build_bug.h:47:37: note: in expansion of macro ‘compiletime_assert’
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^~~~~~~~~~~~~~~~~~
./include/linux/build_bug.h:71:2: note: in expansion of macro ‘BUILD_BUG_ON_MSG’
BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
^~~~~~~~~~~~~~~~
net/ipv4/tcp_bbrplus.c:1155:5: note: in expansion of macro ‘BUILD_BUG_ON’
BUILD_BUG_ON(sizeof(struct bbr) > ICSK_CA_PRIV_SIZE);
不清楚，可尝试使用ubuntu18.04系统按本文方法编译试试。