1 What: tcp_dma_copybreak sysctl 1 What: tcp_dma_copybreak sysctl
2 Date: Removed in kernel v3.13 2 Date: Removed in kernel v3.13
3 Contact: Dan Williams <dan.j.williams@in 3 Contact: Dan Williams <dan.j.williams@intel.com>
4 Description: 4 Description:
5 Formerly the lower limit, in bytes, of 5 Formerly the lower limit, in bytes, of the size of socket reads
6 that will be offloaded to a DMA copy e 6 that will be offloaded to a DMA copy engine. Removed due to
7 coherency issues of the cpu potentiall 7 coherency issues of the cpu potentially touching the buffers
8 while dma is in flight. 8 while dma is in flight.
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