flow_offload: reject configuration of packet-per-second policing in offload drivers

A follow-up patch will allow users to configures packet-per-second policing
in the software datapath. In preparation for this, teach all drivers that
support offload of the policer action to reject such configuration as
currently none of them support it.

Signed-off-by: Baowen Zheng <[e-mail]>
Signed-off-by: Simon Horman <[e-mail]>
Signed-off-by: Louis Peens <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/dsa/sja1105/sja1105_flower.c

···
 	flow_action_for_each(i, act, &rule->action) {
 		switch (act->id) {
 		case FLOW_ACTION_POLICE:
+			if (act->police.rate_pkt_ps) {
+				NL_SET_ERR_MSG_MOD(extack,
+						   "QoS offload not support packets per second");
+				goto out;
+			}
+
 			rc = sja1105_flower_policer(priv, port, extack, cookie,
 						    &key,
 						    act->police.rate_bytes_ps,

drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_matchall.c

···
 	flow_action_for_each(i, entry, actions) {
 		switch (entry->id) {
 		case FLOW_ACTION_POLICE:
+			if (entry->police.rate_pkt_ps) {
+				NL_SET_ERR_MSG_MOD(extack,
+						   "QoS offload not support packets per second");
+				return -EOPNOTSUPP;
+			}
 			/* Convert bytes per second to bits per second */
 			if (entry->police.rate_bytes_ps * 8 > max_link_rate) {
 				NL_SET_ERR_MSG_MOD(extack,
···
 	flow_action_for_each(i, entry, &cls->rule->action)
 		if (entry->id == FLOW_ACTION_POLICE)
 			break;
-
+	if (entry->police.rate_pkt_ps) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "QoS offload not support packets per second");
+		return -EOPNOTSUPP;
+	}
 	/* Convert from bytes per second to Kbps */
 	p.u.params.maxrate = div_u64(entry->police.rate_bytes_ps * 8, 1000);
 	p.u.params.channel = pi->tx_chan;

drivers/net/ethernet/freescale/enetc/enetc_qos.c

···
 
 	/* Flow meter and max frame size */
 	if (entryp) {
+		if (entryp->police.rate_pkt_ps) {
+			NL_SET_ERR_MSG_MOD(extack, "QoS offload not support packets per second");
+			err = -EOPNOTSUPP;
+			goto free_sfi;
+		}
 		if (entryp->police.burst) {
 			fmi = kzalloc(sizeof(*fmi), GFP_KERNEL);
 			if (!fmi) {

drivers/net/ethernet/mellanox/mlx5/core/en_tc.c

···
 	flow_action_for_each(i, act, flow_action) {
 		switch (act->id) {
 		case FLOW_ACTION_POLICE:
+			if (act->police.rate_pkt_ps) {
+				NL_SET_ERR_MSG_MOD(extack, "QoS offload not support packets per second");
+				return -EOPNOTSUPP;
+			}
 			err = apply_police_params(priv, act->police.rate_bytes_ps, extack);
 			if (err)
 				return err;

drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c

···
 				return -EOPNOTSUPP;
 			}
 
+			if (act->police.rate_pkt_ps) {
+				NL_SET_ERR_MSG_MOD(extack, "QoS offload not support packets per second");
+				return -EOPNOTSUPP;
+			}
+
 			/* The kernel might adjust the requested burst size so
 			 * that it is not exactly a power of two. Re-adjust it
 			 * here since the hardware only supports burst sizes

drivers/net/ethernet/mscc/ocelot_flower.c

···
 						   "Last action must be GOTO");
 				return -EOPNOTSUPP;
 			}
+			if (a->police.rate_pkt_ps) {
+				NL_SET_ERR_MSG_MOD(extack,
+						   "QoS offload not support packets per second");
+				return -EOPNOTSUPP;
+			}
 			filter->action.police_ena = true;
 			rate = a->police.rate_bytes_ps;
 			filter->action.pol.rate = div_u64(rate, 1000) * 8;

drivers/net/ethernet/mscc/ocelot_net.c

···
 			return -EEXIST;
 		}
 
+		if (action->police.rate_pkt_ps) {
+			NL_SET_ERR_MSG_MOD(extack,
+					   "QoS offload not support packets per second");
+			return -EOPNOTSUPP;
+		}
+
 		pol.rate = (u32)div_u64(action->police.rate_bytes_ps, 1000) * 8;
 		pol.burst = action->police.burst;
 

drivers/net/ethernet/netronome/nfp/flower/qos_conf.c

···
 		return -EOPNOTSUPP;
 	}
 
+	if (action->police.rate_pkt_ps) {
+		NL_SET_ERR_MSG_MOD(extack, "unsupported offload: qos rate limit offload not support packets per second");
+		return -EOPNOTSUPP;
+	}
+
 	rate = action->police.rate_bytes_ps;
 	burst = action->police.burst;
 	netdev_port_id = nfp_repr_get_port_id(netdev);