[PATCH 6/7] [I/OAT] Add documentation for the tcp_dma_copybreak sysctl

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Signed-off-by: Chris Leech <[email protected]>

 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 d46338a..841d61e 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -369,6 +369,12 @@ 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
 IP Variables:
 ip_local_port_range - 2 INTEGERS

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