Worked on extending bpfilter in the facebook/bpfilter repository to support the LoongArch architecture by implementing the missing __NR_bpf syscall. This addition enabled bpfilter functionality on LoongArch, improving cross-architecture portability and laying the foundation for future enhancements. The technical approach involved kernel-level C programming, syscall integration, and establishing initial scaffolding for architecture-specific testing and validation. No major bugs were addressed during this period, as the focus remained on onboarding LoongArch and ensuring compatibility. Demonstrated skills included system programming, kernel development, and careful attention to code hygiene, resulting in a maintainable and portable solution for broader hardware support.