devlink: Document zero policer identifier

When setting a policer to a trap group, a value of "0" will unbind the
currently bound policer from the group.

The behavior is intentional and tested in kernel selftests, so document
it.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Suggested-by: Alex Kushnarov <alexanderk@mellanox.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

diff --git a/man/man8/devlink-trap.8 b/man/man8/devlink-trap.8
index 1e69342758d5a4d797928716ce15e72d54222766..f5e66412f1b72574b9c566c6a2465c840d36d4c0 100644 (file)
--- a/man/man8/devlink-trap.8
+++ b/man/man8/devlink-trap.8
@@ -118,7 +118,8 @@ skipped.
 
 .TP
 .BI policer " POLICER"
-packet trap policer. The policer to bind to the packet trap group.
+packet trap policer. The policer to bind to the packet trap group. A value of
+"0" will unbind the currently bound policer.
 
 .TP
 .B nopolicer