Add details explaining the hw_tc option.

Signed-off-by: Amritha Nambiar <amritha.namb...@intel.com>
---
 man/man8/tc-flower.8 |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/man/man8/tc-flower.8 b/man/man8/tc-flower.8
index be46f02..fd9098e 100644
--- a/man/man8/tc-flower.8
+++ b/man/man8/tc-flower.8
@@ -10,7 +10,10 @@ flower \- flow based traffic control filter
 .B action
 .IR ACTION_SPEC " ] [ "
 .B classid
-.IR CLASSID " ]"
+.IR CLASSID " ] [ "
+.B hw_tc
+.IR TCID " ]"
+
 
 .ti -8
 .IR MATCH_LIST " := [ " MATCH_LIST " ] " MATCH
@@ -77,6 +80,10 @@ is in the form
 .BR X : Y ", while " X " and " Y
 are interpreted as numbers in hexadecimal format.
 .TP
+.BI hw_tc " TCID"
+Specify a hardware traffic class to pass matching packets on to. TCID is in the
+range 0 through 15.
+.TP
 .BI indev " ifname"
 Match on incoming interface name. Obviously this makes sense only for forwarded
 flows.

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