[PATCH 5/7] I/OAT: Add documentation for the tcp_dma_copybreak sysctl

[Chris Leech <christopher.leech@intel.com>]

Signed-off-by: Chris Leech <christopher.leech@intel.com>
---

 Documentation/networking/ip-sysctl.txt |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index fd3c0c0..e9ee102 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -375,6 +375,12 @@ tcp_slow_start_after_idle - BOOLEAN
 	be timed out after an idle period.
 	Default: 1
 
+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

-
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