Ideaon | Embedded Software Engineer | bangalore
2 weeks ago
Job Description: L2 NIC Driver Developer (Linux)
Position Overview:
We are seeking a highly skilled L2 (Layer 2) NIC Driver Developer with expertise in Linux
kernel programming to join our team. The ideal candidate will design, develop, optimize, and maintain high-performance network interface card (NIC) drivers at Layer 2 for Linux-based systems. Experience with Windows NIC driver development is a plus. You will work closely with hardware and software teams to ensure seamless integration, performance optimization, and robust functionality.
Key Responsibilities:
Driver Development:
- Design and implement L2 NIC drivers for Linux, ensuring compatibility with the latest kernel versions and distributions.
- Develop drivers that meet performance, stability, and scalability requirements.
- Maintain compliance with standards like IEEE 802.3 and other Ethernet-related specifications.
Performance Optimization:
- Optimize NIC drivers for low-latency, high-throughput networking applications.
- Implement advanced features such as interrupt moderation, Receive Side Scaling (RSS), Generic Receive Offload (GRO), and TCP Segmentation Offload (TSO).
- Testing and Debugging:
- Write and maintain test cases for NIC drivers, including stress tests and regression
- tests.
- Debug kernel and user-space issues related to the NIC driver using tools like gdb, ftrace, and perf.
Qualifications:
Technical Skills:
- Strong experience in Linux kernel programming, especially in the area of network drivers.
- Deep understanding of Layer 2 networking concepts, including Ethernet, VLAN tagging (802.1Q), and link aggregation (802.3ad).
- Proficiency in C programming and familiarity with debugging tools like kgdb, valgrind, and Wireshark.
- Knowledge of DMA, PCI/PCIe, and memory-mapped I/O (MMIO) interactions between NICs and the system.
- Experience with Linux networking subsystems (e.g., ethtool, netdev, and skb structures).
Optional but Preferred Skills:
- Experience with DPDK, eBPF, or other high-performance packet processing
- frameworks.
- Knowledge of SR-IOV, RDMA, or hardware offloading features.
- Hands-on experience with NIC driver development for Windows (e.g., NDIS drivers).
Nice to Have:
- Contributions to open-source projects, particularly in the Linux kernel networking Nstack.
- Familiarity with virtualization technologies like KVM, Xen, or VMware, and virtual NICs (vNICs).
- Experience with NIC hardware testing tools or simulation environments.
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