amzn/amzn-drivers
Apr 2025 – Apr 2025
1 Month active
Languages Used
CMarkdownShell
Technical Skills
BPFC ProgrammingDebuggingDevice Driver DevelopmentDevice DriversDriver Development
Ofir Tabachnik
PROFILE
Ofir Tabachnik
Worked on the amzn/amzn-drivers repository to enhance the ENA network driver, focusing on XDP performance, stability, and maintainability. Delivered XDP multibuffer support across RX and TX paths, introducing ECC-based capability checks, improved fragment handling, and optimized buffer management for XDP_PASS. Addressed critical stability issues by refining RX ID recycling and ensuring proper buffer release from XDP programs. Improved code quality through targeted refactoring, metadata support, and removal of unused CPU sets. Leveraged C programming, Linux kernel development, and BPF expertise to deliver higher throughput and reliability, culminating in a version update to 2.14.0 for production workloads.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
28Total
Bugs
4
Commits
28
Features
8
Lines of code
1,425
Activity Months1
Your Network
1621 peopleWork History
April 2025
28 Commits • 8 Features
Apr 1, 2025April 2025 — amzn/amzn-drivers: ENA driver enhancements focused on XDP performance, stability, and maintainability. Delivered XDP multibuffer support across RX/TX with ECC-based capability checks, frag handling, rx_copybreak for XDP_PASS, and cleanup of related constants/defines. Added minimum kernel version guard for ENA_XSK_BUFF_DMA_SYNC_SINGLE_ARG. Addressed critical stability issues (RX ID recycling, buffer releases from XDP, and print mismatches). Implemented code quality and maintenance improvements (separating ena_com_write_sq_doorbell to RX/TX; XDP metadata; memory barriers; NAPI/config backports; removal of unused CPU sets). Driver version bumped to 2.14.0, delivering higher XDP throughput, lower latency, and improved reliability for production workloads.
28 Commits • 8 Features
Apr 1, 2025April 2025 — amzn/amzn-drivers: ENA driver enhancements focused on XDP performance, stability, and maintainability. Delivered XDP multibuffer support across RX/TX with ECC-based capability checks, frag handling, rx_copybreak for XDP_PASS, and cleanup of related constants/defines. Added minimum kernel version guard for ENA_XSK_BUFF_DMA_SYNC_SINGLE_ARG. Addressed critical stability issues (RX ID recycling, buffer releases from XDP, and print mismatches). Implemented code quality and maintenance improvements (separating ena_com_write_sq_doorbell to RX/TX; XDP metadata; memory barriers; NAPI/config backports; removal of unused CPU sets). Driver version bumped to 2.14.0, delivering higher XDP throughput, lower latency, and improved reliability for production workloads.
April 2025
Activity
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Quality Metrics
Correctness93.6%
Maintainability90.8%
Architecture91.8%
Performance89.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
CMarkdownShell
Technical Skills
BPFC ProgrammingDebuggingDevice Driver DevelopmentDevice DriversDriver DevelopmentKernel DevelopmentLinux KernelLinux Kernel DevelopmentNetwork DriversNetworkingPerformance OptimizationRPM PackagingShell ScriptingTesting
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