bonding: warn user when 802.3ad speed is unknown

NicolasDichtel · davem330 · commit cd99c3776351 · 2017-06-10T16:06:49.000-04:00
Goal is to advertise the user when ethtool speeds and 802.3ad speeds are
desynchronized.
When this case happens, the kernel needs to be patched.

Suggested-by: Andrew Lunn &lt;andrew@lunn.ch&gt;
Signed-off-by: Nicolas Dichtel &lt;nicolas.dichtel@6wind.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
@@ -322,6 +322,11 @@ static u16 __get_link_speed(struct port *port)
 
 		default:
 			/* unknown speed value from ethtool. shouldn't happen */
+			if (slave->speed != SPEED_UNKNOWN)
+				pr_warn_once("%s: unknown ethtool speed (%d) for port %d (set it to 0)\n",
+					     slave->bond->dev->name,
+					     slave->speed,
+					     port->actor_port_number);
 			speed = 0;
 			break;
 		}
