I/OAT: Add documentation for the tcp_dma_copybreak sysctl
Signed-off-by: Chris Leech <christopher.leech@intel.com>
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index af6a63a..8f6067e 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -433,6 +433,12 @@
not receive a window scaling option from them.
Default: 0
+tcp_dma_copybreak - INTEGER
+ Lower limit, in bytes, of the size of socket reads that will be
+ offloaded to a DMA copy engine, if one is present in the system
+ and CONFIG_NET_DMA is enabled.
+ Default: 4096
+
CIPSOv4 Variables:
cipso_cache_enable - BOOLEAN