88 lines
2.8 KiB
Bash
88 lines
2.8 KiB
Bash
#!/bin/bash
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# TCP BBR 一键开启脚本
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# https://github.com/xmg0828888/tcp-bbr
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RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[0;33m'; NC='\033[0m'
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check_root() { [ "$(id -u)" != "0" ] && echo -e "${RED}请使用 root 运行${NC}" && exit 1; }
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check_os() { [ ! -f /etc/os-release ] && echo -e "${RED}不支持的系统${NC}" && exit 1; }
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show_status() {
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echo -e "\n${GREEN}=== TCP BBR 状态 ===${NC}"
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local algo=$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)
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local qdisc=$(sysctl -n net.core.default_qdisc 2>/dev/null)
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local bbr_mod=$(lsmod | grep -c bbr)
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echo -e "拥塞算法: ${YELLOW}${algo}${NC}"
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echo -e "队列调度: ${YELLOW}${qdisc}${NC}"
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if [ "$algo" = "bbr" ] && [ "$bbr_mod" -gt 0 ]; then
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echo -e "BBR 状态: ${GREEN}✓ 已开启${NC}"
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else
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echo -e "BBR 状态: ${RED}✗ 未开启${NC}"
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fi
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echo ""
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}
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enable_bbr() {
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echo -e "${GREEN}正在开启 BBR...${NC}"
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# 写入 sysctl 配置
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sed -i '/net.core.default_qdisc/d' /etc/sysctl.conf
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sed -i '/net.ipv4.tcp_congestion_control/d' /etc/sysctl.conf
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echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
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echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
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sysctl -p >/dev/null 2>&1
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# 验证
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local algo=$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)
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if [ "$algo" = "bbr" ]; then
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echo -e "${GREEN}✓ BBR 开启成功！${NC}"
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else
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echo -e "${RED}✗ BBR 开启失败，内核可能不支持${NC}"
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echo -e "当前内核: $(uname -r)"
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echo -e "BBR 需要 Linux 4.9+ 内核"
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fi
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}
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disable_bbr() {
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echo -e "${YELLOW}正在关闭 BBR...${NC}"
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sed -i '/net.core.default_qdisc/d' /etc/sysctl.conf
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sed -i '/net.ipv4.tcp_congestion_control/d' /etc/sysctl.conf
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echo "net.core.default_qdisc=pfifo_fast" >> /etc/sysctl.conf
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echo "net.ipv4.tcp_congestion_control=cubic" >> /etc/sysctl.conf
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sysctl -p >/dev/null 2>&1
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echo -e "${GREEN}✓ 已恢复为 cubic${NC}"
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}
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show_menu() {
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clear
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echo -e "${GREEN}================================${NC}"
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echo -e "${GREEN} TCP BBR 一键管理脚本${NC}"
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echo -e "${GREEN}================================${NC}"
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show_status
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echo "1. 开启 BBR"
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echo "2. 关闭 BBR"
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echo "3. 查看状态"
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echo "0. 退出"
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echo ""
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read -p "请选择 [0-3]: " choice
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case "$choice" in
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1) enable_bbr; show_status ;;
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2) disable_bbr; show_status ;;
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3) show_status ;;
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0) exit 0 ;;
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*) echo -e "${RED}无效选择${NC}" ;;
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esac
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read -p "按回车继续..." && show_menu
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}
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check_root
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check_os
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case "${1:-}" in
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enable) enable_bbr; show_status ;;
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disable) disable_bbr; show_status ;;
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status) show_status ;;
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*) show_menu ;;
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esac
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