SunBK201's recent timeline updates SunBK201's recent timeline updatesSunBK201's repos on GitHub
Go 577 watchers
UA3F Advanced HTTP(S) Rewriting Proxy HTML 38 watchers
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OpenWrt-R4S-glibc This repo is used to cross compile OpenWrt for NanoPi-R4S. The official default is to use musl-libc. However, the difference is that the standard C library we use is glibc, instead of musl-libc. C 3 watchers
TinxyR TinxyR is a reverse proxy server help you forward http traffic from local to remote. 3 watchers
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SunBK201 hi guys ! C 2 watchers
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openwrt This repository is a mirror of https://git.openwrt.org/openwrt/openwrt.git It is for reference only and is not active for check-ins or for reporting issues. We will continue to accept Pull Requests here. They will be merged via staging trees then into openwrt.git. All issues should be reported at: https://bugs.openwrt.org Go 1 watchers
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VERJava Replication of VERJava  | SunBK201V2EX member #544456, joined on 2021-05-04 22:30:44 +08:00Today's activity rank 304793  29  14  |
SunBK201
SunBK201
| 如何解决 eBPF sockmap 重定向转发中背压缺失带来的 OOM ？ 1 Linux SunBK201 Mar 31 Lastly replied by SunBK201 | 11 |
| nftables 如何匹配的 TCP 中存在 Payload 数据包? 宽带症候群 SunBK201 Dec 12, 2025 Lastly replied by maybeonly | 14 |
| Reeder Classic 在 macOS 26 Tahoe 上的左右滑动手势失效了 RSS SunBK201 Dec 1, 2025 Lastly replied by orFish | 5 |
| UA3F: 透明重写 HTTP Header 分享创造 SunBK201 Jan 4 Lastly replied by rekulas | 9 |
| Mac 上支持 4K 60FPS 录制的采集卡 问与答 SunBK201 Feb 27, 2024 Lastly replied by SunBK201 | 6 |
SunBK201's recent replies
Mar 31 Replied to a topic by SunBK201 Linux 如何解决 eBPF sockmap 重定向转发中背压缺失带来的 OOM ？ |
@SunBK201 或者 go run . -m TPROXY --rewrite-mode GLOBAL --include-lan-routes --bpf-offload
Mar 31 Replied to a topic by SunBK201 Linux 如何解决 eBPF sockmap 重定向转发中背压缺失带来的 OOM ？ |
@macscsbf 更正下命令，应该使用命令 go run . -m TPROXY --rewrite-mode DIRECT --include-lan-routes --bpf-offload
Mar 31 Replied to a topic by SunBK201/a> Linux 如何解决 eBPF sockmap 重定向转发中背压缺失带来的 OOM ？ |
@macscsbf 虚拟机没问题，我就是用的 UTM 复现的
Mar 31 Replied to a topic by SunBK201 Linux 如何解决 eBPF sockmap 重定向转发中背压缺失带来的 OOM ？ |
@macscsbf 需求是用 eBPF 加速 socket 铰接转发，主要是用在 TCP socket 代理上，从一个 socket 上读到数据并写到另一个 socket 上，现在主流做法是用 splice 来做，我想试试 eBPF redirect 能够加速，理论上除了能够零拷贝还能节省系统调用带来的用户态与内核态之间的上下文切换开销。
如果要测试可以参考下我的代码：
1. eBPF 程序 https://github.com/SunBK201/UA3F/blob/v3.3.0/src/internal/bpf/sockmap/sockmap.c
2. 核心就是保存 2 个 socket 的 cookie 到 SOCKHASH ，然后用 `bpf_sk_redirect_hash` 转发
3. 可以在本机使用 iperf3 或者 netperf 做吞吐测试
4. 如果要完整复现可能比较麻烦，因为我还用到了 TPORXY ，可以直接用我的项目试试 https://github.com/SunBK201/UA3F ，`go run . -m TPROXY --include-lan-routes`。这个命令会接管本机的所有 TCP 连接并进行代理，然后在本机使用 iperf3 请求到另一台机器即可。
如果要测试可以参考下我的代码：
1. eBPF 程序 https://github.com/SunBK201/UA3F/blob/v3.3.0/src/internal/bpf/sockmap/sockmap.c
2. 核心就是保存 2 个 socket 的 cookie 到 SOCKHASH ，然后用 `bpf_sk_redirect_hash` 转发
3. 可以在本机使用 iperf3 或者 netperf 做吞吐测试
4. 如果要完整复现可能比较麻烦，因为我还用到了 TPORXY ，可以直接用我的项目试试 https://github.com/SunBK201/UA3F ，`go run . -m TPROXY --include-lan-routes`。这个命令会接管本机的所有 TCP 连接并进行代理，然后在本机使用 iperf3 请求到另一台机器即可。
Mar 31 Replied to a topic by SunBK201 Linux 如何解决 eBPF sockmap 重定向转发中背压缺失带来的 OOM ？ |
@swananan 感谢回复。其实我之前就是用 splice 做的，用 eBPF 就是想看看能不能再把转发性能提升一些，目前测试看来对于发送时延和 CPU 负载都能有 20% 到 30% 的优化提升，不过目前看来可能只适用于网络接口带宽收发对等的场景。
Feb 20 Replied to a topic by sxmad macOS Mac 上好用的 markdown 预览插件 |
Jan 5 Replied to a topic by ybz 分享创造 送码！ Nycto - macOS 服务管理桌面程序， launchctl 命令工具的 gui 程序。 |
c3VuYmsyMDFnbUBnbWFpbC5jb20= 感谢
Dec 11, 2025 Replied to a topic by SunBK201 宽带症候群 nftables 如何匹配的 TCP 中存在 Payload 数据包? |
@unused 这个方法刚刚我也发现了，但是 ih 似乎需要比较新的 nftables 版本，旧版本不支持
Dec 11, 2025 Replied to a topic by SunBK201 宽带症候群 nftables 如何匹配的 TCP 中存在 Payload 数据包? |
@birdvdsk 我也有想到，但是只用 flag 可能有漏报吧
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