Add BBRv3 Max kernel build

2026-06-15 15:04:37 +08:00
parent 9c436cad53
commit 8e47418950
5 changed files with 459 additions and 53 deletions
@@ -53,13 +53,15 @@ jobs:

          missing=0
          for arch in x86_64 arm64; do
-            tag="$arch-$version"
-            if gh release view "$tag" >/dev/null 2>&1; then
-              echo "$tag already exists."
-            else
-              echo "$tag is missing."
-              missing=1
-            fi
+            for suffix in "" "-max"; do
+              tag="$arch-$version$suffix"
+              if gh release view "$tag" >/dev/null 2>&1; then
+                echo "$tag already exists."
+              else
+                echo "$tag is missing."
+                missing=1
+              fi
+            done
          done

          if [ "$missing" -eq 0 ]; then
@@ -90,8 +92,28 @@ jobs:
        include:
          - arch: x86_64
            runs_on: ubuntu-latest
+            profile: standard
+            profile_name: BBRv3
+            release_suffix: ""
+            localversion: -joeyblog-bbrv3
          - arch: arm64
            runs_on: ubuntu-24.04-arm
+            profile: standard
+            profile_name: BBRv3
+            release_suffix: ""
+            localversion: -joeyblog-bbrv3
+          - arch: x86_64
+            runs_on: ubuntu-latest
+            profile: max
+            profile_name: BBRv3 Max
+            release_suffix: -max
+            localversion: -joeyblog-bbrv3-max
+          - arch: arm64
+            runs_on: ubuntu-24.04-arm
+            profile: max
+            profile_name: BBRv3 Max
+            release_suffix: -max
+            localversion: -joeyblog-bbrv3-max
    runs-on: ${{ matrix.runs_on }}
    env:
      ARCH: ${{ matrix.arch }}
@@ -100,13 +122,13 @@ jobs:
      - name: 检查是否已发布
        id: check_release
        run: |
-          tag="${{ matrix.arch }}-${{ env.KERNEL_VERSION }}"
+          tag="${{ matrix.arch }}-${{ env.KERNEL_VERSION }}${{ matrix.release_suffix }}"
          if gh release view "$tag" >/dev/null 2>&1; then
            echo "BUILD_NEEDED=false" >> "$GITHUB_ENV"
            echo "$tag already exists; skipping build."
          else
            echo "BUILD_NEEDED=true" >> "$GITHUB_ENV"
-            echo "$tag does not exist; building latest kernel with pinned BBRv3 patch."
+            echo "$tag does not exist; building latest kernel with ${{ matrix.profile_name }}."
          fi

      - name: 检出代码
@@ -143,6 +165,12 @@ jobs:
          bash "$GITHUB_WORKSPACE/scripts/apply-bbrv3-port.sh"
          grep -n "BBR_VERSION" net/ipv4/tcp_bbr.c

+      - name: 应用 BBRv3 Max 极限内核配置
+        if: env.BUILD_NEEDED == 'true' && matrix.profile == 'max'
+        working-directory: ./kernel/linux
+        run: |
+          bash "$GITHUB_WORKSPACE/scripts/apply-bbrv3-max-profile.sh"
+
      - name: 编译声明
        if: env.BUILD_NEEDED == 'true'
        working-directory: ./kernel/linux
@@ -150,7 +178,11 @@ jobs:
          grep -v "MODULE_DESCRIPTION" net/ipv4/tcp_bbr.c > net/ipv4/tcp_bbr.c.tmp
          mv net/ipv4/tcp_bbr.c.tmp net/ipv4/tcp_bbr.c

-          echo 'MODULE_DESCRIPTION("TCP BBR v3 (Bottleneck Bandwidth and RTT) - Compiled & Optimized by Joey");' >> net/ipv4/tcp_bbr.c
+          if [ "${{ matrix.profile }}" = "max" ]; then
+            echo 'MODULE_DESCRIPTION("TCP BBR v3 Max - extreme throughput profile by Joey");' >> net/ipv4/tcp_bbr.c
+          else
+            echo 'MODULE_DESCRIPTION("TCP BBR v3 (Bottleneck Bandwidth and RTT) - Compiled & Optimized by Joey");' >> net/ipv4/tcp_bbr.c
+          fi
          
          tail -n 5 net/ipv4/tcp_bbr.c

@@ -171,10 +203,10 @@ jobs:
          bash "$GITHUB_WORKSPACE/scripts/prepare-kernel-config.sh" "${{ matrix.arch }}"

      - name: 上传最终配置文件
-        if: env.BUILD_NEEDED == 'true'
+        if: env.BUILD_NEEDED == 'true' && matrix.profile == 'standard'
        uses: actions/upload-artifact@v4
        with:
-          name: config-${{ matrix.arch }}-${{ env.KERNEL_VERSION }}
+          name: config-${{ matrix.arch }}-${{ matrix.profile }}-${{ env.KERNEL_VERSION }}
          path: ./build-configs/${{ matrix.arch }}*.config

      - name: 构建内核 Debian 包
@@ -182,9 +214,9 @@ jobs:
        working-directory: ./kernel/linux
        run: |
          if [ "${{ matrix.arch }}" = "arm64" ]; then
-            make ARCH=arm64 bindeb-pkg -j$(nproc) LOCALVERSION=-joeyblog-bbrv3 KDEB_COMPRESS=gzip skipdbg=true
+            make ARCH=arm64 bindeb-pkg -j$(nproc) LOCALVERSION=${{ matrix.localversion }} KDEB_COMPRESS=gzip skipdbg=true
          else
-            make bindeb-pkg -j$(nproc) LOCALVERSION=-joeyblog-bbrv3 KDEB_COMPRESS=gzip skipdbg=true
+            make bindeb-pkg -j$(nproc) LOCALVERSION=${{ matrix.localversion }} KDEB_COMPRESS=gzip skipdbg=true
          fi

      - name: 检查 deb 包
@@ -200,14 +232,14 @@ jobs:
      - name: 发布前复查是否已发布
        if: env.BUILD_NEEDED == 'true'
        run: |
-          tag="${{ matrix.arch }}-${KERNEL_VERSION}"
+          tag="${{ matrix.arch }}-${KERNEL_VERSION}${{ matrix.release_suffix }}"
          if gh release view "$tag" >/dev/null 2>&1; then
            echo "PUBLISH_NEEDED=false" >> "$GITHUB_ENV"
            echo "$tag was published while this job was running; skipping upload and release."
          else
            echo "PUBLISH_NEEDED=true" >> "$GITHUB_ENV"
            mkdir -p ./publish-markers
-            touch "./publish-markers/${{ matrix.arch }}"
+            touch "./publish-markers/${{ matrix.arch }}-${{ matrix.profile }}"
            echo "$tag still missing; publishing this build."
          fi

@@ -215,25 +247,25 @@ jobs:
        if: env.BUILD_NEEDED == 'true' && env.PUBLISH_NEEDED == 'true'
        uses: actions/upload-artifact@v4
        with:
-          name: publish-${{ matrix.arch }}-${{ env.KERNEL_VERSION }}
-          path: ./publish-markers/${{ matrix.arch }}
+          name: publish-${{ matrix.arch }}-${{ matrix.profile }}-${{ env.KERNEL_VERSION }}
+          path: ./publish-markers/${{ matrix.arch }}-${{ matrix.profile }}

      - name: 上传 deb 包
        if: env.BUILD_NEEDED == 'true' && env.PUBLISH_NEEDED == 'true'
        uses: actions/upload-artifact@v4
        with:
-          name: deb-${{ matrix.arch }}
+          name: deb-${{ matrix.arch }}-${{ matrix.profile }}
          path: ./kernel/linux-*.deb

      - name: 发布到 GitHub Release
        if: env.BUILD_NEEDED == 'true' && env.PUBLISH_NEEDED == 'true'
        uses: softprops/action-gh-release@v2
        with:
-          tag_name: ${{ matrix.arch }}-${{ env.KERNEL_VERSION }}
+          tag_name: ${{ matrix.arch }}-${{ env.KERNEL_VERSION }}${{ matrix.release_suffix }}
          files: |
            ./kernel/linux-*.deb
            ./build-configs/${{ matrix.arch }}-${{ env.KERNEL_VERSION }}.config
-          body: "带有 BBRv3 的最新内核，适用于 ${{ matrix.arch }} 架构。Compiled & Optimized by Joey."
+          body: "带有 ${{ matrix.profile_name }} 的最新内核，适用于 ${{ matrix.arch }} 架构。Compiled & Optimized by Joey."

  update-config-baseline:
    needs: [preflight, build]
@@ -247,7 +279,7 @@ jobs:
        uses: actions/download-artifact@v4
        continue-on-error: true
        with:
-          pattern: config-*
+          pattern: config-*-standard-*
          path: ./generated-configs
          merge-multiple: true

@@ -255,7 +287,7 @@ jobs:
        uses: actions/download-artifact@v4
        continue-on-error: true
        with:
-          pattern: publish-*
+          pattern: publish-*-standard-*
          path: ./publish-markers
          merge-multiple: true

@@ -272,10 +304,10 @@ jobs:
            exit 0
          fi

-          if [ -f ./publish-markers/x86_64 ] && [ -f ./generated-configs/x86_64.config ]; then
+          if [ -f ./publish-markers/x86_64-standard ] && [ -f ./generated-configs/x86_64.config ]; then
            cp ./generated-configs/x86_64.config ./x86-64.config
          fi
-          if [ -f ./publish-markers/arm64 ] && [ -f ./generated-configs/arm64.config ]; then
+          if [ -f ./publish-markers/arm64-standard ] && [ -f ./generated-configs/arm64.config ]; then
            cp ./generated-configs/arm64.config ./arm64.config
          fi

@@ -8,7 +8,7 @@
 bash <(curl -fsSL https://raw.githubusercontent.com/byJoey/Actions-bbr-v3/main/install.sh)
 ```

-脚本会自动识别当前系统架构，从本仓库 GitHub Releases 下载匹配的 BBRv3 内核 `.deb` 包，并提供安装、指定版本安装、状态检查、加速模式切换和卸载功能。
+脚本会自动识别当前系统架构，从本仓库 GitHub Releases 下载匹配的 BBRv3 内核 `.deb` 包，并提供安装、指定版本安装、状态检查、加速模式切换和卸载功能。安装内核时可选择标准 BBRv3 或 BBRv3 Max 极限内核。

 ## 支持环境

@@ -46,7 +46,7 @@ bash <(curl -fsSL https://raw.githubusercontent.com/byJoey/Actions-bbr-v3/main/i

 常用流程：

-1. 选择 `1` 安装或更新 BBRv3 内核。
+1. 选择 `1` 安装或更新 BBRv3 内核，并按提示选择标准版或 Max 极限版。
 2. 按提示重启系统。
 3. 重新运行脚本，选择 `3` 检查 BBRv3 状态。
 4. 按需选择 `4` 到 `7` 设置队列算法。
@@ -90,7 +90,8 @@ bash <(curl -fsSL https://raw.githubusercontent.com/byJoey/Actions-bbr-v3/main/i

 - 检查系统是否为 Debian/Ubuntu。
 - 检查架构是否为 `x86_64` 或 `aarch64`。
- 从 GitHub Releases 获取当前架构最新版本。
+- 让用户选择标准 BBRv3 或 BBRv3 Max 极限内核。
+- 从 GitHub Releases 获取当前架构和内核类型匹配的最新版本。
 - 下载非 debug 的内核 `.deb` 包。
 - 安装新内核并更新引导配置。
 - 提示是否重启。
@@ -110,15 +111,19 @@ bash <(curl -fsSL https://raw.githubusercontent.com/byJoey/Actions-bbr-v3/main/i
 2. 指定版本安装
 ```

-脚本会列出当前架构可用的 release tag，并按编号安装指定版本。
+脚本会先让用户选择标准 BBRv3 或 BBRv3 Max，再列出当前架构可用的 release tag，并按编号安装指定版本。

 release tag 格式：

 ```text
 x86_64-7.0.11
 arm64-7.0.11
+x86_64-7.0.11-max
+arm64-7.0.11-max
 ```

+其中不带 `-max` 的 tag 是标准 BBRv3 内核，带 `-max` 的 tag 是 BBRv3 Max 极限内核。Max 版会弱化/关闭 BBRv3 的降速、ECN、loss/inflight 收敛等控制路径，只适合自有链路极限测速挑战，不建议日常生产使用。
+
 ## 检查 BBRv3 状态

 运行脚本后选择：
@@ -941,7 +941,76 @@ ask_to_save() {

 # 函数：获取已安装的 joeyblog 内核版本
 get_installed_version() {
-    dpkg -l | grep "linux-image" | grep "joeyblog" | awk '{print $2}' | sed 's/linux-image-//' | head -n 1
+    local profile="${1:-any}"
+    local versions
+
+    versions=$(dpkg -l 2>/dev/null | awk '/^ii/ && $2 ~ /^linux-image-/ && $2 ~ /joeyblog/ {sub(/^linux-image-/, "", $2); print $2}')
+    case "$profile" in
+        standard)
+            echo "$versions" | grep -E -- '-joeyblog-bbrv3$' | sort -V | tail -n 1
+            ;;
+        max)
+            echo "$versions" | grep -E -- '-joeyblog-bbrv3-max$' | sort -V | tail -n 1
+            ;;
+        *)
+            echo "$versions" | sort -V | tail -n 1
+            ;;
+    esac
+}
+
+get_arch_filter() {
+    if [[ "$ARCH" == "aarch64" ]]; then
+        echo "arm64"
+    elif [[ "$ARCH" == "x86_64" ]]; then
+        echo "x86_64"
+    fi
+}
+
+get_profile_label() {
+    case "${1:-standard}" in
+        max) echo "BBR v3 Max（极限内核）" ;;
+        *) echo "BBR v3 标准版" ;;
+    esac
+}
+
+get_expected_installed_version() {
+    local tag="$1"
+    local profile="${2:-standard}"
+    local version
+
+    version="${tag#x86_64-}"
+    version="${version#arm64-}"
+    version="${version%-max}"
+
+    if [[ "$profile" == "max" ]]; then
+        echo "${version}-joeyblog-bbrv3-max"
+    else
+        echo "${version}-joeyblog-bbrv3"
+    fi
+}
+
+select_kernel_profile() {
+    KERNEL_PROFILE="standard"
+
+    echo -e "\033[36m请选择要安装的内核类型：\033[0m"
+    echo -e "\033[33m 1. BBR v3 标准版（推荐日常使用）\033[0m"
+    echo -e "\033[33m 2. BBR v3 Max 极限版（只为暴力测速，不管稳定性）\033[0m"
+    echo -n -e "\033[36m请输入选项 (1-2，默认 1): \033[0m"
+    read -r PROFILE_CHOICE
+
+    case "${PROFILE_CHOICE:-1}" in
+        1)
+            KERNEL_PROFILE="standard"
+            ;;
+        2)
+            KERNEL_PROFILE="max"
+            echo -e "\033[31m警告：BBR v3 Max 会弱化/关闭降速与惩罚逻辑，只适合极限测速挑战，不建议日常生产使用。\033[0m"
+            ;;
+        *)
+            echo -e "\033[31m输入无效，取消安装。\033[0m"
+            return 1
+            ;;
+    esac
 }

 # 函数：智能更新引导加载程序
@@ -1003,9 +1072,15 @@ install_packages() {

 # 函数：检查并安装最新版本
 install_latest_version() {
-    assert_supported_kernel_install_system || return 1
+    local profile="${1:-standard}"
+    local profile_label
+    local arch_filter
+    local expected_version

-    echo -e "\033[36m正在从 GitHub 获取最新版本信息...\033[0m"
+    assert_supported_kernel_install_system || return 1
+    profile_label=$(get_profile_label "$profile")
+
+    echo -e "\033[36m正在从 GitHub 获取 ${profile_label} 最新版本信息...\033[0m"
    BASE_URL="https://api.github.com/repos/byJoey/Actions-bbr-v3/releases"
    RELEASE_DATA=$(gh_api_get "$BASE_URL")
    if [[ -z "$RELEASE_DATA" ]]; then
@@ -1014,27 +1089,30 @@ install_latest_version() {
    fi
    check_release_api_response "$RELEASE_DATA" || return 1

-    local ARCH_FILTER=""
-    [[ "$ARCH" == "aarch64" ]] && ARCH_FILTER="arm64"
-    [[ "$ARCH" == "x86_64" ]] && ARCH_FILTER="x86_64"
-
-    LATEST_TAG_NAME=$(echo "$RELEASE_DATA" | jq -r --arg filter "$ARCH_FILTER" 'map(select(.tag_name | test($filter; "i"))) | sort_by(.published_at) | .[-1].tag_name')
+    arch_filter=$(get_arch_filter)
+    LATEST_TAG_NAME=$(echo "$RELEASE_DATA" | jq -r --arg filter "$arch_filter" --arg profile "$profile" '
+      map(
+        select(.tag_name | test("^" + $filter + "-[0-9]"; "i"))
+        | select(if $profile == "max" then (.tag_name | endswith("-max")) else ((.tag_name | endswith("-max")) | not) end)
+      )
+      | sort_by(.published_at)
+      | .[-1].tag_name
+    ')

    if [[ -z "$LATEST_TAG_NAME" || "$LATEST_TAG_NAME" == "null" ]]; then
-        echo -e "\033[31m未找到适合当前架构 ($ARCH) 的最新版本。\033[0m"
+        echo -e "\033[31m未找到适合当前架构 ($ARCH) 的 ${profile_label} 最新版本。\033[0m"
        return 1
    fi
    echo -e "\033[36m检测到最新版本：\033[0m\033[1;32m$LATEST_TAG_NAME\033[0m"

-    INSTALLED_VERSION=$(get_installed_version)
+    INSTALLED_VERSION=$(get_installed_version "$profile")
    echo -e "\033[36m当前已安装版本：\033[0m\033[1;32m${INSTALLED_VERSION:-"未安装"}\033[0m"

-    CORE_LATEST_VERSION="${LATEST_TAG_NAME#x86_64-}"
-    CORE_LATEST_VERSION="${CORE_LATEST_VERSION#arm64-}"
+    expected_version=$(get_expected_installed_version "$LATEST_TAG_NAME" "$profile")

-    if [[ -n "$INSTALLED_VERSION" && "$INSTALLED_VERSION" == "$CORE_LATEST_VERSION"* ]]; then
+    if [[ -n "$INSTALLED_VERSION" && "$INSTALLED_VERSION" == "$expected_version" ]]; then
        # 修复了此处的颜文字，将反引号 ` 替换为单引号 '
-        echo -e "\033[1;32m(o'▽'o) 您已安装最新版本，无需更新！\033[0m"
+        echo -e "\033[1;32m(o'▽'o) 您已安装最新 ${profile_label}，无需更新！\033[0m"
        return 0
    fi

@@ -1056,7 +1134,12 @@ install_latest_version() {

 # 函数：安装指定版本
 install_specific_version() {
+    local profile="${1:-standard}"
+    local profile_label
+    local arch_filter
+
    assert_supported_kernel_install_system || return 1
+    profile_label=$(get_profile_label "$profile")

    BASE_URL="https://api.github.com/repos/byJoey/Actions-bbr-v3/releases"
    RELEASE_DATA=$(gh_api_get "$BASE_URL")
@@ -1066,18 +1149,20 @@ install_specific_version() {
    fi
    check_release_api_response "$RELEASE_DATA" || return 1

-    local ARCH_FILTER=""
-    [[ "$ARCH" == "aarch64" ]] && ARCH_FILTER="arm64"
-    [[ "$ARCH" == "x86_64" ]] && ARCH_FILTER="x86_64"
-    
-    MATCH_TAGS=$(echo "$RELEASE_DATA" | jq -r --arg filter "$ARCH_FILTER" '.[] | select(.tag_name | test($filter; "i")) | .tag_name')
+    arch_filter=$(get_arch_filter)
+    MATCH_TAGS=$(echo "$RELEASE_DATA" | jq -r --arg filter "$arch_filter" --arg profile "$profile" '
+      .[]
+      | select(.tag_name | test("^" + $filter + "-[0-9]"; "i"))
+      | select(if $profile == "max" then (.tag_name | endswith("-max")) else ((.tag_name | endswith("-max")) | not) end)
+      | .tag_name
+    ')

    if [[ -z "$MATCH_TAGS" ]]; then
-        echo -e "\033[31m未找到适合当前架构的版本。\033[0m"
+        echo -e "\033[31m未找到适合当前架构的 ${profile_label} 版本。\033[0m"
        return 1
    fi

-    echo -e "\033[36m以下为适用于当前架构的版本：\033[0m"
+    echo -e "\033[36m以下为适用于当前架构的 ${profile_label} 版本：\033[0m"
    IFS=$'\n' read -rd '' -a TAG_ARRAY <<<"$MATCH_TAGS"

    for i in "${!TAG_ARRAY[@]}"; do
@@ -1149,11 +1234,11 @@ read -r ACTION
 case "$ACTION" in
    1)
        echo -e "\033[1;32m٩(｡•́‿•̀｡)۶ 您选择了安装或更新 BBR v3！\033[0m"
-        install_latest_version
+        select_kernel_profile && install_latest_version "$KERNEL_PROFILE"
        ;;
    2)
        echo -e "\033[1;32m(｡･∀･)ﾉﾞ 您选择了安装指定版本的 BBR！\033[0m"
-        install_specific_version
+        select_kernel_profile && install_specific_version "$KERNEL_PROFILE"
        ;;
    3)
        echo -e "\033[1;32m(｡･ω･｡) 检查是否为 BBR v3...\033[0m"
@@ -0,0 +1,204 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+target="${1:-net/ipv4/tcp_bbr.c}"
+
+if [[ ! -f "$target" ]]; then
+  echo "BBRv3 source file not found: $target" >&2
+  exit 1
+fi
+
+if ! grep -q '^#define BBR_VERSION[[:space:]]*3' "$target"; then
+  echo "BBRv3 max profile requires BBR_VERSION=3 in $target." >&2
+  exit 1
+fi
+
+python3 - "$target" <<'PY'
+import re
+import sys
+from pathlib import Path
+
+path = Path(sys.argv[1])
+text = path.read_text()
+
+replacements = {
+    r"static const u32 bbr_probe_rtt_win_ms = .*?;": "static const u32 bbr_probe_rtt_win_ms = 60 * 60 * 1000;",
+    r"static const u32 bbr_probe_rtt_cwnd_gain = .*?;": "static const u32 bbr_probe_rtt_cwnd_gain = BBR_UNIT * 3;",
+    r"static const u32 bbr_probe_rtt_mode_ms = .*?;": "static const u32 bbr_probe_rtt_mode_ms = 0;",
+    r"static const u32 bbr_tso_rtt_shift = .*?;": "static const u32 bbr_tso_rtt_shift = 2;",
+    r"static const int bbr_pacing_margin_percent = .*?;": "static const int bbr_pacing_margin_percent = 0;",
+    r"static const int bbr_startup_pacing_gain = .*?;": "static const int bbr_startup_pacing_gain = BBR_UNIT * 15 / 4;",
+    r"static const int bbr_startup_cwnd_gain = .*?;": "static const int bbr_startup_cwnd_gain = BBR_UNIT * 15 / 4;",
+    r"static const int bbr_drain_gain = .*?;": "static const int bbr_drain_gain = BBR_UNIT;",
+    r"static const int bbr_cwnd_gain  = .*?;": "static const int bbr_cwnd_gain  = BBR_UNIT * 15 / 4;",
+    r"static const u32 bbr_cwnd_min_target = .*?;": "static const u32 bbr_cwnd_min_target = 64;",
+    r"static const u32 bbr_full_bw_thresh = .*?;": "static const u32 bbr_full_bw_thresh = BBR_UNIT * 101 / 100;",
+    r"static const u32 bbr_full_bw_cnt = .*?;": "static const u32 bbr_full_bw_cnt = 12;",
+    r"static const int bbr_extra_acked_gain = .*?;": "static const int bbr_extra_acked_gain = BBR_UNIT * 4;",
+    r"static const u32 bbr_extra_acked_max_us = .*?;": "static const u32 bbr_extra_acked_max_us = 1000 * 1000;",
+    r"static const bool bbr_precise_ece_ack = .*?;": "static const bool bbr_precise_ece_ack = false;",
+    r"static const u32 bbr_ecn_max_rtt_us = .*?;": "static const u32 bbr_ecn_max_rtt_us = 0;",
+    r"static const u32 bbr_beta = .*?;": "static const u32 bbr_beta = 0;",
+    r"static const u32 bbr_ecn_alpha_gain = .*?;": "static const u32 bbr_ecn_alpha_gain = 0;",
+    r"static const u32 bbr_ecn_alpha_init = .*?;": "static const u32 bbr_ecn_alpha_init = 0;",
+    r"static const u32 bbr_ecn_factor = .*?;": "static const u32 bbr_ecn_factor = 0;",
+    r"static const u32 bbr_ecn_thresh = .*?;": "static const u32 bbr_ecn_thresh = 0;",
+    r"static const u32 bbr_ecn_reprobe_gain = .*?;": "static const u32 bbr_ecn_reprobe_gain = 0;",
+    r"static const u32 bbr_loss_thresh = [^\n]*": "static const u32 bbr_loss_thresh = BBR_UNIT;  /* max: effectively disabled */",
+    r"static const bool bbr_loss_probe_recovery = .*?;": "static const bool bbr_loss_probe_recovery = false;",
+    r"static const u32 bbr_full_loss_cnt = .*?;": "static const u32 bbr_full_loss_cnt = 0;",
+    r"static const u32 bbr_full_ecn_cnt = .*?;": "static const u32 bbr_full_ecn_cnt = 0;",
+    r"static const u32 bbr_inflight_headroom = .*?;": "static const u32 bbr_inflight_headroom = 0;",
+    r"static const u32 bbr_bw_probe_cwnd_gain = .*?;": "static const u32 bbr_bw_probe_cwnd_gain = 3;",
+    r"static const u32 bbr_bw_probe_max_rounds = .*?;": "static const u32 bbr_bw_probe_max_rounds = 1;",
+    r"static const u32 bbr_bw_probe_rand_rounds = .*?;": "static const u32 bbr_bw_probe_rand_rounds = 0;",
+    r"static const u32 bbr_bw_probe_base_us = .*?;": "static const u32 bbr_bw_probe_base_us = 1000;",
+    r"static const u32 bbr_bw_probe_rand_us = .*?;": "static const u32 bbr_bw_probe_rand_us = 0;",
+}
+
+missing = []
+for pattern, replacement in replacements.items():
+    text, count = re.subn(pattern, replacement, text, count=1)
+    if count != 1:
+        missing.append(pattern)
+
+def find_matching(source, open_pos, open_char, close_char):
+    depth = 0
+    i = open_pos
+    in_string = None
+    in_line_comment = False
+    in_block_comment = False
+    escaped = False
+
+    while i < len(source):
+        ch = source[i]
+        nxt = source[i + 1] if i + 1 < len(source) else ""
+
+        if in_line_comment:
+            if ch == "\n":
+                in_line_comment = False
+            i += 1
+            continue
+
+        if in_block_comment:
+            if ch == "*" and nxt == "/":
+                in_block_comment = False
+                i += 2
+                continue
+            i += 1
+            continue
+
+        if in_string:
+            if escaped:
+                escaped = False
+            elif ch == "\\":
+                escaped = True
+            elif ch == in_string:
+                in_string = None
+            i += 1
+            continue
+
+        if ch == "/" and nxt == "/":
+            in_line_comment = True
+            i += 2
+            continue
+        if ch == "/" and nxt == "*":
+            in_block_comment = True
+            i += 2
+            continue
+        if ch in ('"', "'"):
+            in_string = ch
+            i += 1
+            continue
+        if ch == open_char:
+            depth += 1
+        elif ch == close_char:
+            depth -= 1
+            if depth == 0:
+                return i
+        i += 1
+
+    return -1
+
+def next_code_char(source, pos):
+    i = pos
+    while i < len(source):
+        if source[i].isspace():
+            i += 1
+            continue
+        if source.startswith("//", i):
+            j = source.find("\n", i + 2)
+            i = len(source) if j == -1 else j + 1
+            continue
+        if source.startswith("/*", i):
+            j = source.find("*/", i + 2)
+            i = len(source) if j == -1 else j + 2
+            continue
+        return i
+    return -1
+
+def replace_function_body(source, name, body):
+    for match in re.finditer(rf"\b{re.escape(name)}\s*\(", source):
+        open_paren = source.find("(", match.start())
+        close_paren = find_matching(source, open_paren, "(", ")")
+        if close_paren == -1:
+            continue
+        code_pos = next_code_char(source, close_paren + 1)
+        if code_pos == -1:
+            continue
+        if source[code_pos] == ";":
+            continue
+        if source[code_pos] != "{":
+            continue
+        close_brace = find_matching(source, code_pos, "{", "}")
+        if close_brace == -1:
+            continue
+        return source[:code_pos + 1] + body + source[close_brace:]
+    missing.append(f"function {name}")
+    return source
+
+pacing_pattern = re.compile(
+    r"static const int bbr_pacing_gain\[\] = \{\n"
+    r".*?\n"
+    r"\};",
+    re.S,
+)
+pacing_replacement = """static const int bbr_pacing_gain[] = {
+\tBBR_UNIT * 15 / 4,\t/* UP: max-rate probe */
+\tBBR_UNIT,\t\t/* DOWN: no intentional drain */
+\tBBR_UNIT * 5 / 4,\t/* CRUISE: keep pressure on the pipe */
+\tBBR_UNIT * 2,\t\t/* REFILL: refill aggressively */
+};"""
+text, pacing_count = pacing_pattern.subn(pacing_replacement, text, count=1)
+if pacing_count != 1:
+    missing.append("static const int bbr_pacing_gain[]")
+
+extreme_bodies = {
+    "bbr_bw": "\n\treturn bbr_max_bw(sk);\n",
+    "bbr_can_use_ecn": "\n\treturn false;\n",
+    "bbr_check_ecn_too_high_in_startup": "\n\treturn;\n",
+    "bbr_update_ecn_alpha": "\n\treturn -1;\n",
+    "bbr_plb": "\n\treturn;\n",
+    "bbr_handle_queue_too_high_in_startup": "\n\treturn;\n",
+    "bbr_is_inflight_too_high": "\n\treturn false;\n",
+    "bbr_handle_inflight_too_high": "\n\treturn;\n",
+    "bbr_bound_cwnd_for_inflight_model": "\n\treturn;\n",
+    "bbr_adapt_lower_bounds": "\n\treturn;\n",
+    "bbr_check_loss_too_high_in_startup": "\n\treturn;\n",
+    "bbr_check_drain": "\n\treturn;\n",
+}
+
+for function_name, body in extreme_bodies.items():
+    text = replace_function_body(text, function_name, body)
+
+if missing:
+    print("Failed to apply BBRv3 max profile; missing patterns:", file=sys.stderr)
+    for item in missing:
+        print(f"  {item}", file=sys.stderr)
+    sys.exit(1)
+
+path.write_text(text)
+PY
+
+grep -nE 'bbr_(startup_pacing_gain|startup_cwnd_gain|cwnd_gain|pacing_gain|beta|loss_thresh|full_loss_cnt|full_ecn_cnt|inflight_headroom|bw_probe_cwnd_gain|probe_rtt_mode_ms|pacing_margin_percent)' "$target"
+echo "Applied BBRv3 max profile to $target"
@@ -0,0 +1,80 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+kernel_version="${1:-}"
+arch="${2:-$(uname -m)}"
+repo_root=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)
+workdir="${BBRV3_MAX_WORKDIR:-$repo_root/kernel-max}"
+
+if [[ -z "$kernel_version" ]]; then
+  raw_version=$(curl -fsSL https://www.kernel.org/finger_banner |
+    awk -F: '/latest stable version/ {gsub(/^[ \t]+|[ \t]+$/, "", $2); print $2; exit}')
+  if [[ "$raw_version" =~ ^[0-9]+\.[0-9]+$ ]]; then
+    kernel_version="${raw_version}.0"
+  else
+    kernel_version="$raw_version"
+  fi
+fi
+
+case "$arch" in
+  aarch64|arm64)
+    build_arch="arm64"
+    config_arch="arm64"
+    ;;
+  x86_64)
+    build_arch="x86_64"
+    config_arch="x86_64"
+    ;;
+  *)
+    echo "Unsupported arch: $arch" >&2
+    exit 1
+    ;;
+esac
+
+if ! [[ "$kernel_version" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+  echo "Unexpected kernel version: $kernel_version" >&2
+  exit 1
+fi
+
+branch=$(echo "$kernel_version" | grep -oE '^[0-9]+\.[0-9]+')
+mkdir -p "$workdir"
+
+if [[ ! -d "$workdir/linux/.git" ]]; then
+  git clone --depth=1 --branch "linux-$branch.y" \
+    https://github.com/gregkh/linux.git "$workdir/linux"
+fi
+
+cd "$workdir/linux"
+git fetch --depth=1 origin "linux-$branch.y"
+git reset --hard FETCH_HEAD
+git clean -fdx
+
+bash "$repo_root/scripts/apply-bbrv3-port.sh"
+bash "$repo_root/scripts/apply-bbrv3-max-profile.sh"
+
+grep -v "MODULE_DESCRIPTION" net/ipv4/tcp_bbr.c > net/ipv4/tcp_bbr.c.tmp
+mv net/ipv4/tcp_bbr.c.tmp net/ipv4/tcp_bbr.c
+echo 'MODULE_DESCRIPTION("TCP BBR v3 Max - extreme throughput profile by Joey");' >> net/ipv4/tcp_bbr.c
+
+IFS='.' read -r v p s <<< "$kernel_version"
+sed -i "s/^VERSION *=.*/VERSION = $v/" Makefile
+sed -i "s/^PATCHLEVEL *=.*/PATCHLEVEL = $p/" Makefile
+sed -i "s/^SUBLEVEL *=.*/SUBLEVEL = $s/" Makefile
+
+export GITHUB_WORKSPACE="$repo_root"
+export KERNEL_VERSION="$kernel_version"
+bash "$repo_root/scripts/prepare-kernel-config.sh" "$config_arch"
+
+if [[ "$build_arch" == "arm64" ]]; then
+  make ARCH=arm64 bindeb-pkg -j"$(nproc)" LOCALVERSION=-joeyblog-bbrv3-max KDEB_COMPRESS=gzip skipdbg=true
+else
+  make bindeb-pkg -j"$(nproc)" LOCALVERSION=-joeyblog-bbrv3-max KDEB_COMPRESS=gzip skipdbg=true
+fi
+
+if find "$workdir" -maxdepth 1 \( -name '*-dbg*.deb' -o -name '*-dbgsym*.deb' \) | grep -q .; then
+  echo "ERROR: debug deb package was generated." >&2
+  find "$workdir" -maxdepth 1 \( -name '*-dbg*.deb' -o -name '*-dbgsym*.deb' \) -print >&2
+  exit 1
+fi
+
+find "$workdir" -maxdepth 1 -name 'linux-*.deb' -print | sort