net: mscc: ocelot: offload multiple tc-flower actions in same rule

At this stage, the tc-flower offload of mscc_ocelot can only delegate
rules to the VCAP IS2 security enforcement block. These rules have, in
hardware, separate bits for policing and for overriding the destination
port mask and/or copying to the CPU. So it makes sense that we attempt
to expose some more of that low-level complexity instead of simply
choosing between a single type of action.

Something similar happens with the VCAP IS1 block, where the same action
can contain enable bits for VLAN classification and for QoS
classification at the same time.

So model the action structure after the hardware description, and let
the high-level ocelot_flower.c construct an action vector from multiple
tc actions.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 23 insertions, 7 deletions

diff --git a/drivers/net/ethernet/mscc/ocelot_vcap.h b/drivers/net/ethernet/mscc/ocelot_vcap.h
index 7db6da6e35b9..70d4f7131fde 100644
--- a/drivers/net/ethernet/mscc/ocelot_vcap.h
+++ b/drivers/net/ethernet/mscc/ocelot_vcap.h
@@ -11,6 +11,8 @@
 #include <net/sch_generic.h>
 #include <net/pkt_cls.h>
 
+#define OCELOT_POLICER_DISCARD 0x17f
+
 struct ocelot_ipv4 {
 	u8 addr[4];
 };
@@ -174,10 +176,26 @@ struct ocelot_vcap_key_ipv6 {
 	enum ocelot_vcap_bit seq_zero;       /* TCP sequence number is zero */
 };
 
-enum ocelot_vcap_action {
-	OCELOT_VCAP_ACTION_DROP,
-	OCELOT_VCAP_ACTION_TRAP,
-	OCELOT_VCAP_ACTION_POLICE,
+enum ocelot_mask_mode {
+	OCELOT_MASK_MODE_NONE,
+	OCELOT_MASK_MODE_PERMIT_DENY,
+	OCELOT_MASK_MODE_POLICY,
+	OCELOT_MASK_MODE_REDIRECT,
+};
+
+struct ocelot_vcap_action {
+	union {
+		/* VCAP IS2 */
+		struct {
+			bool cpu_copy_ena;
+			u8 cpu_qu_num;
+			enum ocelot_mask_mode mask_mode;
+			unsigned long port_mask;
+			bool police_ena;
+			struct ocelot_policer pol;
+			u32 pol_ix;
+		};
+	};
 };
 
 struct ocelot_vcap_stats {
@@ -192,7 +210,7 @@ struct ocelot_vcap_filter {
 	u16 prio;
 	u32 id;
 
-	enum ocelot_vcap_action action;
+	struct ocelot_vcap_action action;
 	struct ocelot_vcap_stats stats;
 	unsigned long ingress_port_mask;
 
@@ -210,8 +228,6 @@ struct ocelot_vcap_filter {
 		struct ocelot_vcap_key_ipv4 ipv4;
 		struct ocelot_vcap_key_ipv6 ipv6;
 	} key;
-	struct ocelot_policer pol;
-	u32 pol_ix;
 };
 
 int ocelot_vcap_filter_add(struct ocelot *ocelot,