1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_tc_matchall.c b/drivers/net/ethernet/microchip/sparx5/sparx5_tc_matchall.c
new file mode 100644
index 00000000000000..30dd61e5d150fb
--- /dev/null
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_tc_matchall.c
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Microchip VCAP API
+ *
+ * Copyright (c) 2022 Microchip Technology Inc. and its subsidiaries.
+ */
+
+#include "sparx5_tc.h"
+#include "vcap_api.h"
+#include "vcap_api_client.h"
+#include "sparx5_main_regs.h"
+#include "sparx5_main.h"
+#include "sparx5_vcap_impl.h"
+
+static int sparx5_tc_matchall_replace(struct net_device *ndev,
+				      struct tc_cls_matchall_offload *tmo,
+				      bool ingress)
+{
+	struct sparx5_port *port = netdev_priv(ndev);
+	struct flow_action_entry *action;
+	struct sparx5 *sparx5;
+	int err;
+
+	if (!flow_offload_has_one_action(&tmo->rule->action)) {
+		NL_SET_ERR_MSG_MOD(tmo->common.extack,
+				   "Only one action per filter is supported");
+		return -EOPNOTSUPP;
+	}
+	action = &tmo->rule->action.entries[0];
+
+	sparx5 = port->sparx5;
+	switch (action->id) {
+	case FLOW_ACTION_GOTO:
+		err = vcap_enable_lookups(sparx5->vcap_ctrl, ndev,
+					  action->chain_index, tmo->cookie,
+					  true);
+		if (err == -EFAULT) {
+			NL_SET_ERR_MSG_MOD(tmo->common.extack,
+					   "Unsupported goto chain");
+			return -EOPNOTSUPP;
+		}
+		if (err == -EADDRINUSE) {
+			NL_SET_ERR_MSG_MOD(tmo->common.extack,
+					   "VCAP already enabled");
+			return -EOPNOTSUPP;
+		}
+		if (err) {
+			NL_SET_ERR_MSG_MOD(tmo->common.extack,
+					   "Could not enable VCAP lookups");
+			return err;
+		}
+		break;
+	default:
+		NL_SET_ERR_MSG_MOD(tmo->common.extack, "Unsupported action");
+		return -EOPNOTSUPP;
+	}
+	return 0;
+}
+
+static int sparx5_tc_matchall_destroy(struct net_device *ndev,
+				      struct tc_cls_matchall_offload *tmo,
+				      bool ingress)
+{
+	struct sparx5_port *port = netdev_priv(ndev);
+	struct sparx5 *sparx5;
+	int err;
+
+	sparx5 = port->sparx5;
+	if (!tmo->rule && tmo->cookie) {
+		err = vcap_enable_lookups(sparx5->vcap_ctrl, ndev, 0,
+					  tmo->cookie, false);
+		if (err)
+			return err;
+		return 0;
+	}
+	NL_SET_ERR_MSG_MOD(tmo->common.extack, "Unsupported action");
+	return -EOPNOTSUPP;
+}
+
+int sparx5_tc_matchall(struct net_device *ndev,
+		       struct tc_cls_matchall_offload *tmo,
+		       bool ingress)
+{
+	if (!tc_cls_can_offload_and_chain0(ndev, &tmo->common)) {
+		NL_SET_ERR_MSG_MOD(tmo->common.extack,
+				   "Only chain zero is supported");
+		return -EOPNOTSUPP;
+	}
+
+	switch (tmo->command) {
+	case TC_CLSMATCHALL_REPLACE:
+		return sparx5_tc_matchall_replace(ndev, tmo, ingress);
+	case TC_CLSMATCHALL_DESTROY:
+		return sparx5_tc_matchall_destroy(ndev, tmo, ingress);
+	default:
+		return -EOPNOTSUPP;
+	}
+}