Linux 7.1 Kernel to Remove UDP-Lite Support for Code Cleanup and Performance Gains
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Summary
The upcoming Linux 7.1 kernel will retire UDP-Lite support, a protocol that allowed partial checksums for potentially damaged packets. The code, present since Linux 2.6.20, is being removed due to persistent breakage issues that went unchecked for years. Removing UDP-Lite will clean up networking code and provide performance benefits for non-UDP-Lite users. Google engineer Kuniyuki Iwashima is leading the retirement effort.
Key quotes
· 4 pulledThe upcoming Linux 7.1 kernel cycle is set to retire UDP-Lite support.
The UDP-Lite protocol allowed for partial checksums where potentially damaged/corrupted packets are still delivered to the application.
Since the Linux 2.6.20 days there has been UDP-Lite support but the kernel is now set to retire it given breakage that has persisted for years and cleaning up the networking code can yield a performance advantage for non-UDP-Lite users.
Kuniyuki Iwashima of Google took to retiring the UDP-Lite code.
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