summaryrefslogtreecommitdiffstats
path: root/Documentation/ABI/removed/net_dma
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/ABI/removed/net_dma')
-rw-r--r--Documentation/ABI/removed/net_dma8
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/ABI/removed/net_dma b/Documentation/ABI/removed/net_dma
new file mode 100644
index 000000000..a173aecc2
--- /dev/null
+++ b/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.