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 <baowen.zheng@corigine.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: Louis Peens <louis.peens@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 files changed, 46 insertions, 1 deletions

diff --git a/drivers/net/dsa/sja1105/sja1105_flower.c b/drivers/net/dsa/sja1105/sja1105_flower.c
index 12e76020bea3..f78b767f86ee 100644
--- a/drivers/net/dsa/sja1105/sja1105_flower.c
+++ b/drivers/net/dsa/sja1105/sja1105_flower.c
@@ -322,6 +322,12 @@ int sja1105_cls_flower_add(struct dsa_switch *ds, int port,
 	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,
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_matchall.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_matchall.c
index 2e309f6673f7..28fd2de9e4cf 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_matchall.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_matchall.c
@@ -48,6 +48,11 @@ static int cxgb4_matchall_egress_validate(struct net_device *dev,
 	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,
@@ -145,7 +150,11 @@ static int cxgb4_matchall_alloc_tc(struct net_device *dev,
 	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;
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_qos.c b/drivers/net/ethernet/freescale/enetc/enetc_qos.c
index a9aee219fb58..cb7fa4bceaf2 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_qos.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_qos.c
@@ -1221,6 +1221,11 @@ static int enetc_psfp_parse_clsflower(struct enetc_ndev_priv *priv,
 
 	/* 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) {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 54ea0dae7ded..78fc27fc4e37 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -4538,6 +4538,10 @@ static int scan_tc_matchall_fdb_actions(struct mlx5e_priv *priv,
 	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;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
index 41855e58564b..ea637fa552f5 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
@@ -190,6 +190,11 @@ static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp,
 				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
diff --git a/drivers/net/ethernet/mscc/ocelot_flower.c b/drivers/net/ethernet/mscc/ocelot_flower.c
index a41b458b1b3e..8b843d3c9189 100644
--- a/drivers/net/ethernet/mscc/ocelot_flower.c
+++ b/drivers/net/ethernet/mscc/ocelot_flower.c
@@ -220,6 +220,11 @@ static int ocelot_flower_parse_action(struct ocelot *ocelot, int port,
 						   "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;
diff --git a/drivers/net/ethernet/mscc/ocelot_net.c b/drivers/net/ethernet/mscc/ocelot_net.c
index 12cb6867a2d0..c08164cd88f4 100644
--- a/drivers/net/ethernet/mscc/ocelot_net.c
+++ b/drivers/net/ethernet/mscc/ocelot_net.c
@@ -251,6 +251,12 @@ static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv,
 			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;
 
diff --git a/drivers/net/ethernet/netronome/nfp/flower/qos_conf.c b/drivers/net/ethernet/netronome/nfp/flower/qos_conf.c
index d4ce8f9ef3cc..88bea6ad59bc 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/qos_conf.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/qos_conf.c
@@ -104,6 +104,11 @@ nfp_flower_install_rate_limiter(struct nfp_app *app, struct net_device *netdev,
 		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);