bonding: remove "port-moved" state that was never implemented

LACP state-machine defines "port-moved" state when the same ActorSystemID
and Port are seen in a LACPDU received on different port. The state is
never set since it's not implemented. However the state-machine attempts
to clear that state occasionally. LACP state machine is already complicated
and since this state is not implemented, removing it's checks makes the
state-machine little simpler.

Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/bonding/bond_3ad.c

@@ -1052,8 +1052,7 @@ static void ad_rx_machine(struct lacpdu *lacpdu, struct port *port)
 		port->sm_rx_state = AD_RX_INITIALIZE;
 		port->sm_vars |= AD_PORT_CHURNED;
 	/* check if port is not enabled */
-	} else if (!(port->sm_vars & AD_PORT_BEGIN)
-		 && !port->is_enabled && !(port->sm_vars & AD_PORT_MOVED))
+	} else if (!(port->sm_vars & AD_PORT_BEGIN) && !port->is_enabled)
 		port->sm_rx_state = AD_RX_PORT_DISABLED;
 	/* check if new lacpdu arrived */
 	else if (lacpdu && ((port->sm_rx_state == AD_RX_EXPIRED) ||
@@ -1081,11 +1080,8 @@ static void ad_rx_machine(struct lacpdu *lacpdu, struct port *port)
 			/* if no lacpdu arrived and no timer is on */
 			switch (port->sm_rx_state) {
 			case AD_RX_PORT_DISABLED:
-				if (port->sm_vars & AD_PORT_MOVED)
-					port->sm_rx_state = AD_RX_INITIALIZE;
-				else if (port->is_enabled
-					 && (port->sm_vars
-					     & AD_PORT_LACP_ENABLED))
+				if (port->is_enabled &&
+				    (port->sm_vars & AD_PORT_LACP_ENABLED))
 					port->sm_rx_state = AD_RX_EXPIRED;
 				else if (port->is_enabled
 					 && ((port->sm_vars
@@ -1115,7 +1111,6 @@ static void ad_rx_machine(struct lacpdu *lacpdu, struct port *port)
 			port->sm_vars &= ~AD_PORT_SELECTED;
 			__record_default(port);
 			port->actor_oper_port_state &= ~AD_STATE_EXPIRED;
-			port->sm_vars &= ~AD_PORT_MOVED;
 			port->sm_rx_state = AD_RX_PORT_DISABLED;
 
 			/* Fall Through */