18c2ecf20Sopenharmony_ciWhat: tcp_dma_copybreak sysctl 28c2ecf20Sopenharmony_ciDate: Removed in kernel v3.13 38c2ecf20Sopenharmony_ciContact: Dan Williams <dan.j.williams@intel.com> 48c2ecf20Sopenharmony_ciDescription: 58c2ecf20Sopenharmony_ci Formerly the lower limit, in bytes, of the size of socket reads 68c2ecf20Sopenharmony_ci that will be offloaded to a DMA copy engine. Removed due to 78c2ecf20Sopenharmony_ci coherency issues of the cpu potentially touching the buffers 88c2ecf20Sopenharmony_ci while dma is in flight. 9