| What: tcp_dma_copybreak sysctl | |
| Date: Removed in kernel v3.13 | |
| Contact: Dan Williams <dan.j.williams@intel.com> | |
| Description: | |
| Formerly the lower limit, in bytes, of the size of socket reads | |
| that will be offloaded to a DMA copy engine. Removed due to | |
| coherency issues of the cpu potentially touching the buffers | |
| while dma is in flight. |