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[Components][lwip]Add lwip-2.2.1 support - #11797

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[Components][lwip]Add lwip-2.2.1 support#11797
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@Tim-Wang38

@Tim-Wang38 Tim-Wang38 commented Sep 11, 2026 •
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拉取/合并请求描述：(PR description) Fixed #11588

[

为什么提交这份PR (why to submit this PR)

Add the latest lwip support

请提供验证的bsp和config (provide the config and bsp)

  • BSP: bsp/nxp/imx/imxrt/imxrt1180-nxp-evk/m7

  • .config:
    BSP_USING_ETH
    RT_USING_SAL
    RT_USING_NETDEV
    RT_USING_LWIP

当前拉取/合并请求的状态 Intent for your PR

必须选择一项 Choose one (Mandatory):

  • 本拉取/合并请求是一个草稿版本 This PR is for a code-review and is intended to get feedback
  • 本拉取/合并请求是一个成熟版本 This PR is mature, and ready to be integrated into the repo

代码质量 Code Quality：

我在这个拉取/合并请求中已经考虑了 As part of this pull request, I've considered the following:

  • 已经仔细查看过代码改动的对比 Already check the difference between PR and old code
  • 代码风格正确，包括缩进空格，命名及其他风格 Style guide is adhered to, including spacing, naming and other styles
  • 没有垃圾代码，代码尽量精简，不包含#if 0代码，不包含已经被注释了的代码 All redundant code is removed and cleaned up
  • 所有变更均有原因及合理的，并且不会影响到其他软件组件代码或BSP All modifications are justified and not affect other components or BSP
  • 对难懂代码均提供对应的注释 I've commented appropriately where code is tricky
  • 代码是高质量的 Code in this PR is of high quality
  • 已经使用clang-format 源码格式化工具确保格式符合RT-Thread代码规范 This PR has been formatted with clang-format and complies with RT-Thread code specification
  • 如果是新增bsp, 已经添加ci检查到.github/ALL_BSP_COMPILE.json 详细请参考链接BSP自查

@Tim-Wang38
[lwip] import pristine lwIP 2.2.1 source tree
dd7b795 
  Verbatim upstream lwIP 2.2.1 official release (STABLE-2.2.1),
  complete with apps/, test/ and Filelists.
@Tim-Wang38
[lwip] add lwIP 2.2.1 as a selectable version alongside 1.4.1/2.0.3/2…
3d388ec 
….1.2

  - Kconfig: RT_USING_LWIP221 choice, RT_USING_LWIP_VER_NUM=0x20201
  - SConscript for lwip-2.2.1 (acd.c, mdns split files, tftp.c)
  - replay RTT patch set from lwip-2.1.2 onto 2.2.1
  - import RTT ping.c and tftp_port.c (adapted to 2.2.x TFTP API)
  - SAL: version-gated netconn socket accessor (callback_arg union >= 2.2.0)
  - lwipopts: DHCP ACD (RFC 5227) and MEMP_NUM_SYS_TIMEOUT version gates
  - cherryusb rt_usbh_lwip gate widened for 2.2.1
@CLAassistant

CLAassistant commented Sep 11, 2026 •
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CLA assistant check
All committers have signed the CLA.

@github-actions

github-actions Bot commented Sep 11, 2026

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👋 感谢您对 RT-Thread 的贡献！Thank you for your contribution to RT-Thread!

为确保代码符合 RT-Thread 的编码规范，请在你的仓库中执行以下步骤运行代码格式化工作流（如果格式化CI运行失败）。
To ensure your code complies with RT-Thread's coding style, please run the code formatting workflow by following the steps below (If the formatting of CI fails to run).

🛠 操作步骤 | Steps

  1. 前往 Actions 页面 | Go to the Actions page
    点击进入工作流 → | Click to open workflow →

  2. 点击 Run workflow | Click Run workflow

  • Use workflow from 保持默认分支（通常为 master）
    Keep the default branch (usually master) in Use workflow from
  • 在 branch 输入框填写 PR 分支 components/add_lwip-2.2.1
    Enter PR branch components/add_lwip-2.2.1 in the branch field
  • 设置需排除的文件/目录（目录请以"/"结尾）
    Set files/directories to exclude (directories should end with "/")
  1. 等待工作流完成 | Wait for the workflow to complete
    格式化后的代码将作为独立提交推送至你的分支。
    The formatting changes will be pushed to your branch as a separate commit.

完成后，提交将自动更新至 components/add_lwip-2.2.1 分支，关联的 Pull Request 也会同步更新。
Once completed, commits will be pushed to the components/add_lwip-2.2.1 branch automatically, and the related Pull Request will be updated.

如有问题欢迎联系我们，再次感谢您的贡献！💐
If you have any questions, feel free to reach out. Thanks again for your contribution!

@github-actions

github-actions Bot commented Sep 11, 2026

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📌 Code Review Assignment

🏷️ Tag: components

Reviewers: @Maihuanyi

Changed Files (Click to expand)
  • components/drivers/usb/cherryusb/platform/rtthread/rt_usbh_lwip.c
  • components/net/lwip/.clang-format-ignore
  • components/net/lwip/Kconfig
  • components/net/lwip/lwip-2.2.1/BUILDING
  • components/net/lwip/lwip-2.2.1/CHANGELOG
  • components/net/lwip/lwip-2.2.1/COPYING
  • components/net/lwip/lwip-2.2.1/FEATURES
  • components/net/lwip/lwip-2.2.1/FILES
  • components/net/lwip/lwip-2.2.1/README
  • components/net/lwip/lwip-2.2.1/SConscript
  • components/net/lwip/lwip-2.2.1/UPGRADING
  • components/net/lwip/lwip-2.2.1/doc/FILES
  • components/net/lwip/lwip-2.2.1/doc/NO_SYS_SampleCode.c
  • components/net/lwip/lwip-2.2.1/doc/ZeroCopyRx.c
  • components/net/lwip/lwip-2.2.1/doc/contrib.txt
  • components/net/lwip/lwip-2.2.1/doc/doxygen/generate.bat
  • components/net/lwip/lwip-2.2.1/doc/doxygen/generate.sh
  • components/net/lwip/lwip-2.2.1/doc/doxygen/lwip.Doxyfile
  • components/net/lwip/lwip-2.2.1/doc/doxygen/lwip.Doxyfile.cmake.in
  • components/net/lwip/lwip-2.2.1/doc/doxygen/main_page.h
  • components/net/lwip/lwip-2.2.1/doc/doxygen/output/html/acd_8c.html
  • components/net/lwip/lwip-2.2.1/doc/doxygen/output/html/acd_8c.js
  • components/net/lwip/lwip-2.2.1/doc/doxygen/output/html/acd_8h.html
  • components/net/lwip/lwip-2.2.1/doc/doxygen/output/html/acd_8h.js
  • components/net/lwip/lwip-2.2.1/doc/doxygen/output/html/altcp_8c.html
  • components/net/lwip/lwip-2.2.1/doc/doxygen/output/html/altcp_8c.js
  • components/net/lwip/lwip-2.2.1/doc/doxygen/output/html/altcp_8h.html
  • components/net/lwip/lwip-2.2.1/doc/doxygen/output/html/altcp_8h.js
  • components/net/lwip/lwip-2.2.1/doc/doxygen/output/html/altcp__alloc_8c.html
  • components/net/lwip/lwip-2.2.1/doc/doxygen/output/html/altcp__alloc_8c.js

📊 Current Review Status (Last Updated: 2026-09-11 16:31 CST)

📝 Review Instructions

  1. 维护者可以通过单击此处来刷新审查状态: 🔄 刷新状态
    Maintainers can refresh the review status by clicking here: 🔄 Refresh Status

  2. 确认审核通过后评论 LGTM/lgtm
    Comment LGTM/lgtm after confirming approval

  3. PR合并前需至少一位维护者确认
    PR must be confirmed by at least one maintainer before merging

ℹ️ 刷新CI状态操作需要具备仓库写入权限。
ℹ️ Refresh CI status operation requires repository Write permission.

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[Feature] Request to update the lwip components to version 2.2.1

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@Tim-Wang38 @CLAassistant