Documentation/networking: add checksum-offloads.txt to explain LCO
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index cf906d1..3920675 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3705,6 +3705,8 @@
/* Local Checksum Offload.
* Compute outer checksum based on the assumption that the
* inner checksum will be offloaded later.
+ * See Documentation/networking/checksum-offloads.txt for
+ * explanation of how this works.
* Fill in outer checksum adjustment (e.g. with sum of outer
* pseudo-header) before calling.
* Also ensure that inner checksum is in linear data area.