Sep 2026· Proceedings of the 4th Workshop on eBPF and Kernel Extensions· 0 citations· 6 references
TL;DR
This work presents XDP_CLONE, a system that performs packet duplication directly within the network driver, eliminating socket buffer allocation and significantly reduces overhead and improves performance for eBPF network applications up to 2.3x.
Abstract
The eBPF eXpress Data Path (XDP) enables high-performance packet processing by executing programmable logic early in the Linux networking stack. However, XDP does not support packet duplication, a key requirement for publish-subscribe systems and high-performance computing (HPC) applications relying on message broadcasting. To overcome this limitation, developers typically use the Traffic Control (TC) layer, where the bpf_clone_redirect() helper allows packet replication. TC operates after socket buffer (sk_buff) allocation, a major source of overhead, and requires the creation of additional buffers for each duplicated packet. In this work, we present XDP_CLONE, a system that performs packet duplication directly within the network driver, eliminating socket buffer allocation. This approach significantly reduces overhead and improves performance for eBPF network applications up to 2.3x.
This work presents Tux, a kernel-bypass networking stack designed for database systems that achieves high performance without giving up compatibility and robustness, and implements T !" in a library called T !".
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Unknown authors· 0 citations
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