Merge branch 'stable/10' into devel

1 files changed, 6 insertions, 5 deletions

diff --git a/sys/net/if_var.h b/sys/net/if_var.h
index 58391a1..1ff7a4b 100644
--- a/sys/net/if_var.h
+++ b/sys/net/if_var.h
@@ -236,11 +236,12 @@ struct ifnet {
 	 * count limit does not apply. If all three fields are zero,
 	 * there is no TSO limit.
 	 *
-	 * NOTE: The TSO limits only apply to the data payload part of
-	 * a TCP/IP packet. That means there is no need to subtract
-	 * space for ethernet-, vlan-, IP- or TCP- headers from the
-	 * TSO limits unless the hardware driver in question requires
-	 * so.
+	 * NOTE: The TSO limits should reflect the values used in the
+	 * BUSDMA tag a network adapter is using to load a mbuf chain
+	 * for transmission. The TCP/IP network stack will subtract
+	 * space for all linklevel and protocol level headers and
+	 * ensure that the full mbuf chain passed to the network
+	 * adapter fits within the given limits.
 	 */
 	u_int	if_hw_tsomax;