Content Deep Dive
A debugging story: corrupt packets in AF_XDP; a kernel bug or user error?
Blog post from Cloudflare
Post Details
Company
Date Published
Author
Shawn Bohrer, Bastien Dhiver
Word Count
4,703
Company Posts That Month
Language
English
Hacker News Points
6
Post removed?
No
Summary
A race condition was found in the Linux virtual ethernet (veth) driver that affected AF_XDP enabled devices by corrupting packets. The issue was fixed by ensuring that all packet processing operations were completed before signaling the NAPI poll as complete. This bug was important to fix because it slightly increased the latency of connection establishments and data transfers across the network.
Trends Found in this Post
| Trend | Post Mentions | Total Month Mentions | Posts | Companies | MoM |
|---|---|---|---|---|---|
| Observability | 12 | 1,049 | 196 | 65 | +41% |
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