perf: optimize packet processing and decryption in receive.c #74
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This commit introduces several performance optimizations: 1) Memory Operations: Reduced redundant skb operations, optimized scatter-gather list building, minimized memory copies. 2) SIMD Acceleration: Added SIMD-accelerated decryption path with proper context handling and fallback. 3) Handshake Processing: Added fast path for packet type checking, optimized load calculation and cookie validation. 4) General Improvements: Added key data prefetching, early counter validation, reduced branching, better cache utilization.
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This commit introduces several performance optimizations: 1) Memory Operations: Reduced redundant skb operations, optimized scatter-gather list building, minimized memory copies. 2) SIMD Acceleration: Added SIMD-accelerated decryption path with proper context handling and fallback. 3) Handshake Processing: Added fast path for packet type checking, optimized load calculation and cookie validation. 4) General Improvements: Added key data prefetching, early counter validation, reduced branching, better cache utilization.