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Diffstat (limited to 'kernel/Documentation/ABI/removed/net_dma')
| -rw-r--r-- | kernel/Documentation/ABI/removed/net_dma | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/Documentation/ABI/removed/net_dma b/kernel/Documentation/ABI/removed/net_dma new file mode 100644 index 000000000..a173aecc2 --- /dev/null +++ b/kernel/Documentation/ABI/removed/net_dma @@ -0,0 +1,8 @@ +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. |