Monthly Summary — July 2025 (geerlingguy/linux) Key features delivered: - Implemented full backlog mode for the Hisilicon SEC2 crypto driver (high-throughput backlog mode) with a software fallback. This enables hierarchical caching of user data during encryption/decryption and ensures operations continue when hardware queues are saturated or reset conditions occur. - Introduced a software computation fallback path that maintains throughput when hardware offload queues are full or during reset, preserving crypto performance under load. Major bugs fixed: - Addressed reliability concerns caused by hardware queue overflow by adding a robust software fallback and backlog caching, reducing data loss and throughput degradation under saturation. Overall impact and accomplishments: - Significantly improved encryption throughput stability and reliability for high-load cryptographic workloads in the Linux crypto subsystem. - Reduced risk of service degradation in crypto-intensive scenarios and laid groundwork for enterprise-grade offload performance. Technologies/skills demonstrated: - Linux kernel driver development, crypto subsystem integration, and hardware-offload orchestration. - Design and implementation of backlog queue structures and fault-tolerant software fallbacks. - C programming at kernel level, testing and validation of high-throughput cryptographic paths. Commit reference for traceability: - f0ae287c50455f7be0d8dd45a803d403c7aa4d2e: crypto: hisilicon/sec2 - implement full backlog mode for sec