[PATCH v4 net-next 0/8] net: dsa: felix: psfp support on vsc9959

[PATCH v4 net-next 0/8] net: dsa: felix: psfp support on vsc9959

[Xiaoliang Yang]

VSC9959 hardware supports Per-Stream Filtering and Policing(PSFP).
This patch series add PSFP support on tc flower offload of ocelot
driver. Use chain 30000 to distinguish PSFP from VCAP blocks. Add gate
and police set to support PSFP in VSC9959 driver.

v3->v4 changes:
 - Introduce vsc9959_psfp_sfi_table_get() function in patch where it is
   used to fix compile warning.
 - Store MAC entry type before FRER set, and recover it after FRER
   disabled.

v2->v3 changes:
 - Reorder first two patches. Export struct ocelot_mact_entry, then add
   ocelot_mact_lookup() and ocelot_mact_write() functions.
 - Add PSFP list to struct ocelot, and init it by using
   ocelot->ops->psfp_init().

v1->v2 changes:
 - Use tc flower offload of ocelot driver to support PSFP add and delete.
 - Add PSFP tables add/del functions in felix_vsc9959.c.
 - Use list_for_each_entry to simplify the code.

Vladimir Oltean (2):
  net: mscc: ocelot: export struct ocelot_mact_entry
  net: mscc: ocelot: add MAC table write and lookup operations

Xiaoliang Yang (6):
  net: mscc: ocelot: set vcap IS2 chain to goto PSFP chain
  net: mscc: ocelot: add gate and police action offload to PSFP
  net: dsa: felix: support psfp filter on vsc9959
  net: dsa: felix: add stream gate settings for psfp
  net: mscc: ocelot: use index to set vcap policer
  net: dsa: felix: use vcap policer to set flow meter for psfp

 drivers/net/dsa/ocelot/felix.c             |   2 +
 drivers/net/dsa/ocelot/felix.h             |   2 +
 drivers/net/dsa/ocelot/felix_vsc9959.c     | 697 ++++++++++++++++++++-
 drivers/net/ethernet/mscc/ocelot.c         |  56 +-
 drivers/net/ethernet/mscc/ocelot.h         |  13 -
 drivers/net/ethernet/mscc/ocelot_flower.c  |  74 ++-
 drivers/net/ethernet/mscc/ocelot_vcap.c    | 103 +--
 drivers/net/ethernet/mscc/ocelot_vsc7514.c |   7 +
 include/soc/mscc/ocelot.h                  |  49 +-
 include/soc/mscc/ocelot_ana.h              |  10 +
 include/soc/mscc/ocelot_vcap.h             |   1 +
 11 files changed, 942 insertions(+), 72 deletions(-)

-- 
2.17.1

[PATCH v4 net-next 1/8] net: mscc: ocelot: export struct ocelot_mact_entry

[Xiaoliang Yang]

From: Vladimir Oltean <vladimir.oltean@nxp.com>

Felix DSA needs to use this struct to export MAC table write and lookup
operations as well, for its stream identification functions, so export
them in preparation of that.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
---
 drivers/net/ethernet/mscc/ocelot.c |  6 ------
 drivers/net/ethernet/mscc/ocelot.h | 13 -------------
 include/soc/mscc/ocelot.h          | 19 +++++++++++++++++++
 3 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index c581b955efb3..39a5cee81677 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -14,12 +14,6 @@
 #define TABLE_UPDATE_SLEEP_US 10
 #define TABLE_UPDATE_TIMEOUT_US 100000
 
-struct ocelot_mact_entry {
-	u8 mac[ETH_ALEN];
-	u16 vid;
-	enum macaccess_entry_type type;
-};
-
 static inline u32 ocelot_mact_read_macaccess(struct ocelot *ocelot)
 {
 	return ocelot_read(ocelot, ANA_TABLES_MACACCESS);
diff --git a/drivers/net/ethernet/mscc/ocelot.h b/drivers/net/ethernet/mscc/ocelot.h
index 1952d6a1b98a..a77050b13d18 100644
--- a/drivers/net/ethernet/mscc/ocelot.h
+++ b/drivers/net/ethernet/mscc/ocelot.h
@@ -54,19 +54,6 @@ struct ocelot_dump_ctx {
 	int idx;
 };
 
-/* MAC table entry types.
- * ENTRYTYPE_NORMAL is subject to aging.
- * ENTRYTYPE_LOCKED is not subject to aging.
- * ENTRYTYPE_MACv4 is not subject to aging. For IPv4 multicast.
- * ENTRYTYPE_MACv6 is not subject to aging. For IPv6 multicast.
- */
-enum macaccess_entry_type {
-	ENTRYTYPE_NORMAL = 0,
-	ENTRYTYPE_LOCKED,
-	ENTRYTYPE_MACv4,
-	ENTRYTYPE_MACv6,
-};
-
 /* A (PGID) port mask structure, encoding the 2^ocelot->num_phys_ports
  * possibilities of egress port masks for L2 multicast traffic.
  * For a switch with 9 user ports, there are 512 possible port masks, but the
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index 06706a9fd5b1..32b3c60d6046 100644
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -698,6 +698,25 @@ struct ocelot_skb_cb {
 	u8 ts_id;
 };
 
+/* MAC table entry types.
+ * ENTRYTYPE_NORMAL is subject to aging.
+ * ENTRYTYPE_LOCKED is not subject to aging.
+ * ENTRYTYPE_MACv4 is not subject to aging. For IPv4 multicast.
+ * ENTRYTYPE_MACv6 is not subject to aging. For IPv6 multicast.
+ */
+enum macaccess_entry_type {
+	ENTRYTYPE_NORMAL = 0,
+	ENTRYTYPE_LOCKED,
+	ENTRYTYPE_MACv4,
+	ENTRYTYPE_MACv6,
+};
+
+struct ocelot_mact_entry {
+	u8 mac[ETH_ALEN];
+	u16 vid;
+	enum macaccess_entry_type type;
+};
+
 #define OCELOT_SKB_CB(skb) \
 	((struct ocelot_skb_cb *)((skb)->cb))
 
-- 
2.17.1

[PATCH v4 net-next 2/8] net: mscc: ocelot: add MAC table write and lookup operations

[Xiaoliang Yang]

From: Vladimir Oltean <vladimir.oltean@nxp.com>

ocelot_mact_write() can be used for directly modifying an FDB entry
situated at a given row and column, as opposed to the current
ocelot_mact_learn() which calculates the row and column indices
automatically (based on a 11-bit hash derived from the {DMAC, VID} key).

ocelot_mact_lookup() can be used to retrieve the row and column at which
an FDB entry with the given {DMAC, VID} key is found.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
---
 drivers/net/ethernet/mscc/ocelot.c | 47 ++++++++++++++++++++++++++++++
 include/soc/mscc/ocelot.h          |  6 ++++
 2 files changed, 53 insertions(+)

diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index 39a5cee81677..689c800caa54 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -96,6 +96,53 @@ int ocelot_mact_forget(struct ocelot *ocelot,
 }
 EXPORT_SYMBOL(ocelot_mact_forget);
 
+int ocelot_mact_lookup(struct ocelot *ocelot, const unsigned char mac[ETH_ALEN],
+		       unsigned int vid, int *row, int *col)
+{
+	int val;
+
+	ocelot_mact_select(ocelot, mac, vid);
+
+	/* Issue a read command with MACACCESS_VALID=1. */
+	ocelot_write(ocelot, ANA_TABLES_MACACCESS_VALID |
+		     ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_READ),
+		     ANA_TABLES_MACACCESS);
+
+	if (ocelot_mact_wait_for_completion(ocelot))
+		return -ETIMEDOUT;
+
+	/* Read back the entry flags */
+	val = ocelot_read(ocelot, ANA_TABLES_MACACCESS);
+	if (!(val & ANA_TABLES_MACACCESS_VALID))
+		return -ENOENT;
+
+	ocelot_field_read(ocelot, ANA_TABLES_MACTINDX_M_INDEX, row);
+	ocelot_field_read(ocelot, ANA_TABLES_MACTINDX_BUCKET, col);
+
+	return 0;
+}
+EXPORT_SYMBOL(ocelot_mact_lookup);
+
+/* Like ocelot_mact_learn, except at a specific row and col. */
+void ocelot_mact_write(struct ocelot *ocelot, int port,
+		       const struct ocelot_mact_entry *entry,
+		       int row, int col)
+{
+	ocelot_mact_select(ocelot, entry->mac, entry->vid);
+
+	ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_M_INDEX, row);
+	ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_BUCKET, col);
+
+	ocelot_write(ocelot, ANA_TABLES_MACACCESS_VALID |
+		     ANA_TABLES_MACACCESS_ENTRYTYPE(entry->type) |
+		     ANA_TABLES_MACACCESS_DEST_IDX(port) |
+		     ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_WRITE),
+		     ANA_TABLES_MACACCESS);
+
+	ocelot_mact_wait_for_completion(ocelot);
+}
+EXPORT_SYMBOL(ocelot_mact_write);
+
 static void ocelot_mact_init(struct ocelot *ocelot)
 {
 	/* Configure the learning mode entries attributes:
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index 32b3c60d6046..babaa5b0c026 100644
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -923,6 +923,12 @@ void ocelot_phylink_mac_link_up(struct ocelot *ocelot, int port,
 				bool tx_pause, bool rx_pause,
 				unsigned long quirks);
 
+int ocelot_mact_lookup(struct ocelot *ocelot, const unsigned char mac[ETH_ALEN],
+		       unsigned int vid, int *row, int *col);
+void ocelot_mact_write(struct ocelot *ocelot, int port,
+		       const struct ocelot_mact_entry *entry,
+		       int row, int col);
+
 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
 int ocelot_mrp_add(struct ocelot *ocelot, int port,
 		   const struct switchdev_obj_mrp *mrp);
-- 
2.17.1

[PATCH v4 net-next 3/8] net: mscc: ocelot: set vcap IS2 chain to goto PSFP chain

[Xiaoliang Yang]

Some chips in the ocelot series such as VSC9959 support Per-Stream
Filtering and Policing(PSFP), which is processing after VCAP blocks.
We set this block on chain 30000 and set vcap IS2 chain to goto PSFP
chain if hardware support.

Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
---
 drivers/net/ethernet/mscc/ocelot_flower.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/mscc/ocelot_flower.c b/drivers/net/ethernet/mscc/ocelot_flower.c
index 8b843d3c9189..ce812194e44c 100644
--- a/drivers/net/ethernet/mscc/ocelot_flower.c
+++ b/drivers/net/ethernet/mscc/ocelot_flower.c
@@ -20,6 +20,9 @@
 	(1 * VCAP_BLOCK + (lookup) * VCAP_LOOKUP)
 #define VCAP_IS2_CHAIN(lookup, pag)	\
 	(2 * VCAP_BLOCK + (lookup) * VCAP_LOOKUP + (pag))
+/* PSFP chain and block ID */
+#define PSFP_BLOCK_ID			OCELOT_NUM_VCAP_BLOCKS
+#define OCELOT_PSFP_CHAIN		(3 * VCAP_BLOCK)
 
 static int ocelot_chain_to_block(int chain, bool ingress)
 {
@@ -46,6 +49,9 @@ static int ocelot_chain_to_block(int chain, bool ingress)
 			if (chain == VCAP_IS2_CHAIN(lookup, pag))
 				return VCAP_IS2;
 
+	if (chain == OCELOT_PSFP_CHAIN)
+		return PSFP_BLOCK_ID;
+
 	return -EOPNOTSUPP;
 }
 
@@ -84,7 +90,8 @@ static bool ocelot_is_goto_target_valid(int goto_target, int chain,
 			goto_target == VCAP_IS1_CHAIN(1) ||
 			goto_target == VCAP_IS1_CHAIN(2) ||
 			goto_target == VCAP_IS2_CHAIN(0, 0) ||
-			goto_target == VCAP_IS2_CHAIN(1, 0));
+			goto_target == VCAP_IS2_CHAIN(1, 0) ||
+			goto_target == OCELOT_PSFP_CHAIN);
 
 	if (chain == VCAP_IS1_CHAIN(0))
 		return (goto_target == VCAP_IS1_CHAIN(1));
@@ -111,7 +118,11 @@ static bool ocelot_is_goto_target_valid(int goto_target, int chain,
 		if (chain == VCAP_IS2_CHAIN(0, pag))
 			return (goto_target == VCAP_IS2_CHAIN(1, pag));
 
-	/* VCAP IS2 lookup 1 cannot jump anywhere */
+	/* VCAP IS2 lookup 1 can goto to PSFP block if hardware support */
+	for (pag = 0; pag < VCAP_IS2_NUM_PAG; pag++)
+		if (chain == VCAP_IS2_CHAIN(1, pag))
+			return (goto_target == OCELOT_PSFP_CHAIN);
+
 	return false;
 }
 
@@ -353,7 +364,7 @@ static int ocelot_flower_parse_action(struct ocelot *ocelot, int port,
 
 	if (filter->goto_target == -1) {
 		if ((filter->block_id == VCAP_IS2 && filter->lookup == 1) ||
-		    chain == 0) {
+		    chain == 0 || filter->block_id == PSFP_BLOCK_ID) {
 			allow_missing_goto_target = true;
 		} else {
 			NL_SET_ERR_MSG_MOD(extack, "Missing GOTO action");
-- 
2.17.1

[PATCH v4 net-next 4/8] net: mscc: ocelot: add gate and police action offload to PSFP

[Xiaoliang Yang]

PSFP support gate and police action. This patch add the gate and police
action to flower parse action, check chain ID to determine which block
to offload. Adding psfp callback functions to add, delete and update gate
and police in PSFP table if hardware supports it.

Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
---
 drivers/net/ethernet/mscc/ocelot.c        |  3 ++
 drivers/net/ethernet/mscc/ocelot_flower.c | 52 ++++++++++++++++++++++-
 include/soc/mscc/ocelot.h                 |  5 +++
 include/soc/mscc/ocelot_vcap.h            |  1 +
 4 files changed, 59 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index 689c800caa54..565dc5cc42c3 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -2147,6 +2147,9 @@ int ocelot_init(struct ocelot *ocelot)
 	ocelot_vcap_init(ocelot);
 	ocelot_cpu_port_init(ocelot);
 
+	if (ocelot->ops->psfp_init)
+		ocelot->ops->psfp_init(ocelot);
+
 	for (port = 0; port < ocelot->num_phys_ports; port++) {
 		/* Clear all counters (5 groups) */
 		ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port) |
diff --git a/drivers/net/ethernet/mscc/ocelot_flower.c b/drivers/net/ethernet/mscc/ocelot_flower.c
index ce812194e44c..daeaee99933d 100644
--- a/drivers/net/ethernet/mscc/ocelot_flower.c
+++ b/drivers/net/ethernet/mscc/ocelot_flower.c
@@ -220,10 +220,14 @@ static int ocelot_flower_parse_action(struct ocelot *ocelot, int port,
 			filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
 			break;
 		case FLOW_ACTION_POLICE:
+			if (filter->block_id == PSFP_BLOCK_ID) {
+				filter->type = OCELOT_PSFP_FILTER_OFFLOAD;
+				break;
+			}
 			if (filter->block_id != VCAP_IS2 ||
 			    filter->lookup != 0) {
 				NL_SET_ERR_MSG_MOD(extack,
-						   "Police action can only be offloaded to VCAP IS2 lookup 0");
+						   "Police action can only be offloaded to VCAP IS2 lookup 0 or PSFP");
 				return -EOPNOTSUPP;
 			}
 			if (filter->goto_target != -1) {
@@ -356,6 +360,14 @@ static int ocelot_flower_parse_action(struct ocelot *ocelot, int port,
 			filter->action.pcp_a_val = a->vlan.prio;
 			filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
 			break;
+		case FLOW_ACTION_GATE:
+			if (filter->block_id != PSFP_BLOCK_ID) {
+				NL_SET_ERR_MSG_MOD(extack,
+						   "Gate action can only be offloaded to PSFP chain");
+				return -EOPNOTSUPP;
+			}
+			filter->type = OCELOT_PSFP_FILTER_OFFLOAD;
+			break;
 		default:
 			NL_SET_ERR_MSG_MOD(extack, "Cannot offload action");
 			return -EOPNOTSUPP;
@@ -646,6 +658,10 @@ static int ocelot_flower_parse(struct ocelot *ocelot, int port, bool ingress,
 	if (ret)
 		return ret;
 
+	/* PSFP filter need to parse key by stream identification function. */
+	if (filter->type == OCELOT_PSFP_FILTER_OFFLOAD)
+		return 0;
+
 	return ocelot_flower_parse_key(ocelot, port, ingress, f, filter);
 }
 
@@ -718,6 +734,15 @@ int ocelot_cls_flower_replace(struct ocelot *ocelot, int port,
 	if (filter->type == OCELOT_VCAP_FILTER_DUMMY)
 		return ocelot_vcap_dummy_filter_add(ocelot, filter);
 
+	if (filter->type == OCELOT_PSFP_FILTER_OFFLOAD) {
+		kfree(filter);
+		if (ocelot->ops->psfp_filter_add)
+			return ocelot->ops->psfp_filter_add(ocelot, f);
+
+		NL_SET_ERR_MSG_MOD(extack, "PSFP chain is not supported in HW");
+		return -EOPNOTSUPP;
+	}
+
 	return ocelot_vcap_filter_add(ocelot, filter, f->common.extack);
 }
 EXPORT_SYMBOL_GPL(ocelot_cls_flower_replace);
@@ -733,6 +758,13 @@ int ocelot_cls_flower_destroy(struct ocelot *ocelot, int port,
 	if (block_id < 0)
 		return 0;
 
+	if (block_id == PSFP_BLOCK_ID) {
+		if (ocelot->ops->psfp_filter_del)
+			return ocelot->ops->psfp_filter_del(ocelot, f);
+
+		return -EOPNOTSUPP;
+	}
+
 	block = &ocelot->block[block_id];
 
 	filter = ocelot_vcap_block_find_filter_by_id(block, f->cookie, true);
@@ -751,12 +783,25 @@ int ocelot_cls_flower_stats(struct ocelot *ocelot, int port,
 {
 	struct ocelot_vcap_filter *filter;
 	struct ocelot_vcap_block *block;
+	struct flow_stats stats;
 	int block_id, ret;
 
 	block_id = ocelot_chain_to_block(f->common.chain_index, ingress);
 	if (block_id < 0)
 		return 0;
 
+	if (block_id == PSFP_BLOCK_ID) {
+		if (ocelot->ops->psfp_stats_get) {
+			ret = ocelot->ops->psfp_stats_get(ocelot, f, &stats);
+			if (ret)
+				return ret;
+
+			goto stats_update;
+		}
+
+		return -EOPNOTSUPP;
+	}
+
 	block = &ocelot->block[block_id];
 
 	filter = ocelot_vcap_block_find_filter_by_id(block, f->cookie, true);
@@ -767,7 +812,10 @@ int ocelot_cls_flower_stats(struct ocelot *ocelot, int port,
 	if (ret)
 		return ret;
 
-	flow_stats_update(&f->stats, 0x0, filter->stats.pkts, 0, 0x0,
+	stats.pkts = filter->stats.pkts;
+
+stats_update:
+	flow_stats_update(&f->stats, 0x0, stats.pkts, 0, 0x0,
 			  FLOW_ACTION_HW_STATS_IMMEDIATE);
 	return 0;
 }
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index babaa5b0c026..096c38c65157 100644
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -564,6 +564,11 @@ struct ocelot_ops {
 	u16 (*wm_enc)(u16 value);
 	u16 (*wm_dec)(u16 value);
 	void (*wm_stat)(u32 val, u32 *inuse, u32 *maxuse);
+	void (*psfp_init)(struct ocelot *ocelot);
+	int (*psfp_filter_add)(struct ocelot *ocelot, struct flow_cls_offload *f);
+	int (*psfp_filter_del)(struct ocelot *ocelot, struct flow_cls_offload *f);
+	int (*psfp_stats_get)(struct ocelot *ocelot, struct flow_cls_offload *f,
+			      struct flow_stats *stats);
 };
 
 struct ocelot_vcap_block {
diff --git a/include/soc/mscc/ocelot_vcap.h b/include/soc/mscc/ocelot_vcap.h
index 25fd525aaf92..24b495ce140c 100644
--- a/include/soc/mscc/ocelot_vcap.h
+++ b/include/soc/mscc/ocelot_vcap.h
@@ -646,6 +646,7 @@ enum ocelot_vcap_filter_type {
 	OCELOT_VCAP_FILTER_DUMMY,
 	OCELOT_VCAP_FILTER_PAG,
 	OCELOT_VCAP_FILTER_OFFLOAD,
+	OCELOT_PSFP_FILTER_OFFLOAD,
 };
 
 struct ocelot_vcap_id {
-- 
2.17.1

[PATCH v4 net-next 5/8] net: dsa: felix: support psfp filter on vsc9959

[Xiaoliang Yang]

VSC9959 supports Per-Stream Filtering and Policing(PSFP) that complies
with the IEEE 802.1Qci standard. The stream is identified by Null stream
identification(DMAC and VLAN ID) defined in IEEE802.1CB.

For PSFP, four tables need to be set up: stream table, stream filter
table, stream gate table, and flow meter table. Identify the stream by
parsing the tc flower keys and add it to the stream table. The stream
filter table is automatically maintained, and its index is determined by
SGID(flow gate index) and FMID(flow meter index).

Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
---
 drivers/net/dsa/ocelot/felix_vsc9959.c | 454 ++++++++++++++++++++++++-
 include/soc/mscc/ocelot.h              |   8 +
 include/soc/mscc/ocelot_ana.h          |  10 +
 3 files changed, 462 insertions(+), 10 deletions(-)

diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
index f966a253d1c7..52d10aab93b2 100644
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -5,6 +5,7 @@
 #include <linux/fsl/enetc_mdio.h>
 #include <soc/mscc/ocelot_qsys.h>
 #include <soc/mscc/ocelot_vcap.h>
+#include <soc/mscc/ocelot_ana.h>
 #include <soc/mscc/ocelot_ptp.h>
 #include <soc/mscc/ocelot_sys.h>
 #include <soc/mscc/ocelot.h>
@@ -292,7 +293,7 @@ static const u32 vsc9959_sys_regmap[] = {
 	REG_RESERVED(SYS_MMGT_FAST),
 	REG_RESERVED(SYS_EVENTS_DIF),
 	REG_RESERVED(SYS_EVENTS_CORE),
-	REG_RESERVED(SYS_CNT),
+	REG(SYS_CNT,				0x000000),
 	REG(SYS_PTP_STATUS,			0x000f14),
 	REG(SYS_PTP_TXSTAMP,			0x000f18),
 	REG(SYS_PTP_NXT,			0x000f1c),
@@ -1022,15 +1023,6 @@ static void vsc9959_wm_stat(u32 val, u32 *inuse, u32 *maxuse)
 	*maxuse = val & GENMASK(11, 0);
 }
 
-static const struct ocelot_ops vsc9959_ops = {
-	.reset			= vsc9959_reset,
-	.wm_enc			= vsc9959_wm_enc,
-	.wm_dec			= vsc9959_wm_dec,
-	.wm_stat		= vsc9959_wm_stat,
-	.port_to_netdev		= felix_port_to_netdev,
-	.netdev_to_port		= felix_netdev_to_port,
-};
-
 static int vsc9959_mdio_bus_alloc(struct ocelot *ocelot)
 {
 	struct felix *felix = ocelot_to_felix(ocelot);
@@ -1346,6 +1338,448 @@ static int vsc9959_port_setup_tc(struct dsa_switch *ds, int port,
 	}
 }
 
+#define VSC9959_PSFP_SFID_MAX			175
+#define VSC9959_PSFP_GATE_ID_MAX		183
+#define VSC9959_PSFP_POLICER_MAX		383
+
+struct felix_stream {
+	struct list_head list;
+	unsigned long id;
+	u8 dmac[ETH_ALEN];
+	u16 vid;
+	s8 prio;
+	u8 sfid_valid;
+	u32 sfid;
+	u8 rsv_type;
+};
+
+struct felix_stream_filter {
+	struct list_head list;
+	refcount_t refcount;
+	u32 index;
+	u8 enable;
+	u8 sg_valid;
+	u32 sgid;
+	u8 fm_valid;
+	u32 fmid;
+	u8 prio_valid;
+	u8 prio;
+	u32 maxsdu;
+};
+
+struct felix_stream_filter_counters {
+	u32 match;
+	u32 not_pass_gate;
+	u32 not_pass_sdu;
+	u32 red;
+};
+
+static int vsc9959_stream_identify(struct flow_cls_offload *f,
+				   struct felix_stream *stream)
+{
+	struct flow_rule *rule = flow_cls_offload_flow_rule(f);
+	struct flow_dissector *dissector = rule->match.dissector;
+
+	if (dissector->used_keys &
+	    ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
+	      BIT(FLOW_DISSECTOR_KEY_BASIC) |
+	      BIT(FLOW_DISSECTOR_KEY_VLAN) |
+	      BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS)))
+		return -EOPNOTSUPP;
+
+	if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
+		struct flow_match_eth_addrs match;
+
+		flow_rule_match_eth_addrs(rule, &match);
+		ether_addr_copy(stream->dmac, match.key->dst);
+		if (!is_zero_ether_addr(match.mask->src))
+			return -EOPNOTSUPP;
+	} else {
+		return -EOPNOTSUPP;
+	}
+
+	if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
+		struct flow_match_vlan match;
+
+		flow_rule_match_vlan(rule, &match);
+		if (match.mask->vlan_priority)
+			stream->prio = match.key->vlan_priority;
+		else
+			stream->prio = -1;
+
+		if (!match.mask->vlan_id)
+			return -EOPNOTSUPP;
+		stream->vid = match.key->vlan_id;
+	} else {
+		return -EOPNOTSUPP;
+	}
+
+	stream->id = f->cookie;
+
+	return 0;
+}
+
+static int vsc9959_mact_stream_set(struct ocelot *ocelot,
+				   struct felix_stream *stream,
+				   struct netlink_ext_ack *extack)
+{
+	struct ocelot_mact_entry entry;
+	u32 row, col, reg, dst_idx;
+	u8 type;
+	int ret;
+
+	/* Stream identification desn't support to add a stream with non
+	 * existent MAC (The MAC entry has not been learned in MAC table).
+	 */
+	ret = ocelot_mact_lookup(ocelot, stream->dmac, stream->vid, &row, &col);
+	if (ret) {
+		if (extack)
+			NL_SET_ERR_MSG_MOD(extack, "Stream is not learned in MAC table");
+		return -EOPNOTSUPP;
+	}
+
+	ocelot_rmw(ocelot,
+		   (stream->sfid_valid ? ANA_TABLES_STREAMDATA_SFID_VALID : 0) |
+		   ANA_TABLES_STREAMDATA_SFID(stream->sfid),
+		   ANA_TABLES_STREAMDATA_SFID_VALID |
+		   ANA_TABLES_STREAMDATA_SFID_M,
+		   ANA_TABLES_STREAMDATA);
+
+	reg = ocelot_read(ocelot, ANA_TABLES_MACACCESS);
+	dst_idx = (reg & ANA_TABLES_MACACCESS_DEST_IDX_M) >> 3;
+	type = ANA_TABLES_MACACCESS_ENTRYTYPE_X(reg);
+
+	reg = ocelot_read(ocelot, ANA_TABLES_STREAMDATA);
+	if ((ANA_TABLES_STREAMDATA_SFID_VALID |
+	     ANA_TABLES_STREAMDATA_SSID_VALID) & reg) {
+		entry.type = (type ? type : ENTRYTYPE_LOCKED);
+		stream->rsv_type = type;
+	} else {
+		entry.type = stream->rsv_type;
+	}
+
+	ether_addr_copy(entry.mac, stream->dmac);
+	entry.vid = stream->vid;
+
+	ocelot_mact_write(ocelot, dst_idx, &entry, row, col);
+
+	return 0;
+}
+
+static struct felix_stream *
+vsc9959_stream_table_lookup(struct list_head *stream_list,
+			    struct felix_stream *stream)
+{
+	struct felix_stream *tmp;
+
+	list_for_each_entry(tmp, stream_list, list)
+		if (ether_addr_equal(tmp->dmac, stream->dmac) &&
+		    tmp->vid == stream->vid)
+			return tmp;
+
+	return NULL;
+}
+
+static int vsc9959_stream_table_add(struct ocelot *ocelot,
+				    struct list_head *stream_list,
+				    struct felix_stream *stream,
+				    struct netlink_ext_ack *extack)
+{
+	struct felix_stream *stream_entry;
+	int ret;
+
+	stream_entry = kzalloc(sizeof(*stream_entry), GFP_KERNEL);
+	if (!stream_entry)
+		return -ENOMEM;
+
+	memcpy(stream_entry, stream, sizeof(*stream_entry));
+
+	ret = vsc9959_mact_stream_set(ocelot, stream_entry, extack);
+	if (ret) {
+		kfree(stream_entry);
+		return ret;
+	}
+
+	list_add_tail(&stream_entry->list, stream_list);
+
+	return 0;
+}
+
+static struct felix_stream *
+vsc9959_stream_table_get(struct list_head *stream_list, unsigned long id)
+{
+	struct felix_stream *tmp;
+
+	list_for_each_entry(tmp, stream_list, list)
+		if (tmp->id == id)
+			return tmp;
+
+	return NULL;
+}
+
+static void vsc9959_stream_table_del(struct ocelot *ocelot,
+				     struct felix_stream *stream)
+{
+	vsc9959_mact_stream_set(ocelot, stream, NULL);
+
+	list_del(&stream->list);
+	kfree(stream);
+}
+
+static u32 vsc9959_sfi_access_status(struct ocelot *ocelot)
+{
+	return ocelot_read(ocelot, ANA_TABLES_SFIDACCESS);
+}
+
+static int vsc9959_psfp_sfi_set(struct ocelot *ocelot,
+				struct felix_stream_filter *sfi)
+{
+	u32 val;
+
+	if (sfi->index > VSC9959_PSFP_SFID_MAX)
+		return -EINVAL;
+
+	if (!sfi->enable) {
+		ocelot_write(ocelot, ANA_TABLES_SFIDTIDX_SFID_INDEX(sfi->index),
+			     ANA_TABLES_SFIDTIDX);
+
+		val = ANA_TABLES_SFIDACCESS_SFID_TBL_CMD(SFIDACCESS_CMD_WRITE);
+		ocelot_write(ocelot, val, ANA_TABLES_SFIDACCESS);
+
+		return readx_poll_timeout(vsc9959_sfi_access_status, ocelot, val,
+					  (!ANA_TABLES_SFIDACCESS_SFID_TBL_CMD(val)),
+					  10, 100000);
+	}
+
+	if (sfi->sgid > VSC9959_PSFP_GATE_ID_MAX ||
+	    sfi->fmid > VSC9959_PSFP_POLICER_MAX)
+		return -EINVAL;
+
+	ocelot_write(ocelot,
+		     (sfi->sg_valid ? ANA_TABLES_SFIDTIDX_SGID_VALID : 0) |
+		     ANA_TABLES_SFIDTIDX_SGID(sfi->sgid) |
+		     (sfi->fm_valid ? ANA_TABLES_SFIDTIDX_POL_ENA : 0) |
+		     ANA_TABLES_SFIDTIDX_POL_IDX(sfi->fmid) |
+		     ANA_TABLES_SFIDTIDX_SFID_INDEX(sfi->index),
+		     ANA_TABLES_SFIDTIDX);
+
+	ocelot_write(ocelot,
+		     (sfi->prio_valid ? ANA_TABLES_SFIDACCESS_IGR_PRIO_MATCH_ENA : 0) |
+		     ANA_TABLES_SFIDACCESS_IGR_PRIO(sfi->prio) |
+		     ANA_TABLES_SFIDACCESS_MAX_SDU_LEN(sfi->maxsdu) |
+		     ANA_TABLES_SFIDACCESS_SFID_TBL_CMD(SFIDACCESS_CMD_WRITE),
+		     ANA_TABLES_SFIDACCESS);
+
+	return readx_poll_timeout(vsc9959_sfi_access_status, ocelot, val,
+				  (!ANA_TABLES_SFIDACCESS_SFID_TBL_CMD(val)),
+				  10, 100000);
+}
+
+static int vsc9959_psfp_sfi_table_add(struct ocelot *ocelot,
+				      struct felix_stream_filter *sfi)
+{
+	struct felix_stream_filter *sfi_entry, *tmp;
+	struct list_head *pos, *q, *last;
+	struct ocelot_psfp_list *psfp;
+	u32 insert = 0;
+	int ret;
+
+	psfp = &ocelot->psfp;
+	last = &psfp->sfi_list;
+
+	list_for_each_safe(pos, q, &psfp->sfi_list) {
+		tmp = list_entry(pos, struct felix_stream_filter, list);
+		if (sfi->sg_valid == tmp->sg_valid &&
+		    sfi->fm_valid == tmp->fm_valid &&
+		    tmp->sgid == sfi->sgid &&
+		    tmp->fmid == sfi->fmid) {
+			sfi->index = tmp->index;
+			refcount_inc(&tmp->refcount);
+			return 0;
+		}
+		/* Make sure that the index is increasing in order. */
+		if (tmp->index == insert) {
+			last = pos;
+			insert++;
+		}
+	}
+	sfi->index = insert;
+
+	sfi_entry = kzalloc(sizeof(*sfi_entry), GFP_KERNEL);
+	if (!sfi_entry)
+		return -ENOMEM;
+
+	memcpy(sfi_entry, sfi, sizeof(*sfi_entry));
+	refcount_set(&sfi_entry->refcount, 1);
+
+	ret = vsc9959_psfp_sfi_set(ocelot, sfi_entry);
+	if (ret) {
+		kfree(sfi_entry);
+		return ret;
+	}
+
+	list_add(&sfi_entry->list, last);
+
+	return 0;
+}
+
+static void vsc9959_psfp_sfi_table_del(struct ocelot *ocelot, u32 index)
+{
+	struct felix_stream_filter *tmp, *n;
+	struct ocelot_psfp_list *psfp;
+	u8 z;
+
+	psfp = &ocelot->psfp;
+
+	list_for_each_entry_safe(tmp, n, &psfp->sfi_list, list)
+		if (tmp->index == index) {
+			z = refcount_dec_and_test(&tmp->refcount);
+			if (z) {
+				tmp->enable = 0;
+				vsc9959_psfp_sfi_set(ocelot, tmp);
+				list_del(&tmp->list);
+				kfree(tmp);
+			}
+			break;
+		}
+}
+
+static void vsc9959_psfp_counters_get(struct ocelot *ocelot, u32 index,
+				      struct felix_stream_filter_counters *counters)
+{
+	ocelot_rmw(ocelot, SYS_STAT_CFG_STAT_VIEW(index),
+		   SYS_STAT_CFG_STAT_VIEW_M,
+		   SYS_STAT_CFG);
+
+	counters->match = ocelot_read_gix(ocelot, SYS_CNT, 0x200);
+	counters->not_pass_gate = ocelot_read_gix(ocelot, SYS_CNT, 0x201);
+	counters->not_pass_sdu = ocelot_read_gix(ocelot, SYS_CNT, 0x202);
+	counters->red = ocelot_read_gix(ocelot, SYS_CNT, 0x203);
+
+	/* Clear the PSFP counter. */
+	ocelot_write(ocelot,
+		     SYS_STAT_CFG_STAT_VIEW(index) |
+		     SYS_STAT_CFG_STAT_CLEAR_SHOT(0x10),
+		     SYS_STAT_CFG);
+}
+
+static int vsc9959_psfp_filter_add(struct ocelot *ocelot,
+				   struct flow_cls_offload *f)
+{
+	struct netlink_ext_ack *extack = f->common.extack;
+	struct felix_stream_filter sfi = {0};
+	const struct flow_action_entry *a;
+	struct felix_stream *stream_entry;
+	struct felix_stream stream = {0};
+	struct ocelot_psfp_list *psfp;
+	int ret, i;
+
+	psfp = &ocelot->psfp;
+
+	ret = vsc9959_stream_identify(f, &stream);
+	if (ret) {
+		NL_SET_ERR_MSG_MOD(extack, "Only can match on VID, PCP, and dest MAC");
+		return ret;
+	}
+
+	flow_action_for_each(i, a, &f->rule->action) {
+		switch (a->id) {
+		case FLOW_ACTION_GATE:
+		case FLOW_ACTION_POLICE:
+		default:
+			return -EOPNOTSUPP;
+		}
+	}
+
+	/* Check if stream is set. */
+	stream_entry = vsc9959_stream_table_lookup(&psfp->stream_list, &stream);
+	if (stream_entry) {
+		NL_SET_ERR_MSG_MOD(extack, "This stream is already added");
+		return -EEXIST;
+	}
+
+	sfi.prio_valid = (stream.prio < 0 ? 0 : 1);
+	sfi.prio = (sfi.prio_valid ? stream.prio : 0);
+	sfi.enable = 1;
+
+	ret = vsc9959_psfp_sfi_table_add(ocelot, &sfi);
+	if (ret)
+		return ret;
+
+	stream.sfid = sfi.index;
+	stream.sfid_valid = 1;
+	ret = vsc9959_stream_table_add(ocelot, &psfp->stream_list,
+				       &stream, extack);
+	if (ret)
+		vsc9959_psfp_sfi_table_del(ocelot, stream.sfid);
+
+	return ret;
+}
+
+static int vsc9959_psfp_filter_del(struct ocelot *ocelot,
+				   struct flow_cls_offload *f)
+{
+	struct ocelot_psfp_list *psfp;
+	struct felix_stream *stream;
+
+	psfp = &ocelot->psfp;
+
+	stream = vsc9959_stream_table_get(&psfp->stream_list, f->cookie);
+	if (!stream)
+		return -ENOMEM;
+
+	vsc9959_psfp_sfi_table_del(ocelot, stream->sfid);
+
+	stream->sfid_valid = 0;
+	vsc9959_stream_table_del(ocelot, stream);
+
+	return 0;
+}
+
+static int vsc9959_psfp_stats_get(struct ocelot *ocelot,
+				  struct flow_cls_offload *f,
+				  struct flow_stats *stats)
+{
+	struct felix_stream_filter_counters counters;
+	struct ocelot_psfp_list *psfp;
+	struct felix_stream *stream;
+
+	psfp = &ocelot->psfp;
+	stream = vsc9959_stream_table_get(&psfp->stream_list, f->cookie);
+	if (!stream)
+		return -ENOMEM;
+
+	vsc9959_psfp_counters_get(ocelot, stream->sfid, &counters);
+
+	stats->pkts = counters.match;
+	stats->drops = counters.not_pass_gate + counters.not_pass_sdu +
+		       counters.red;
+
+	return 0;
+}
+
+static void vsc9959_psfp_init(struct ocelot *ocelot)
+{
+	struct ocelot_psfp_list *psfp = &ocelot->psfp;
+
+	INIT_LIST_HEAD(&psfp->stream_list);
+	INIT_LIST_HEAD(&psfp->sfi_list);
+	INIT_LIST_HEAD(&psfp->sgi_list);
+}
+
+static const struct ocelot_ops vsc9959_ops = {
+	.reset			= vsc9959_reset,
+	.wm_enc			= vsc9959_wm_enc,
+	.wm_dec			= vsc9959_wm_dec,
+	.wm_stat		= vsc9959_wm_stat,
+	.port_to_netdev		= felix_port_to_netdev,
+	.netdev_to_port		= felix_netdev_to_port,
+	.psfp_init		= vsc9959_psfp_init,
+	.psfp_filter_add	= vsc9959_psfp_filter_add,
+	.psfp_filter_del	= vsc9959_psfp_filter_del,
+	.psfp_stats_get		= vsc9959_psfp_stats_get,
+};
+
 static const struct felix_info felix_info_vsc9959 = {
 	.target_io_res		= vsc9959_target_io_res,
 	.port_io_res		= vsc9959_port_io_res,
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index 096c38c65157..a611f9cd5935 100644
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -582,6 +582,12 @@ struct ocelot_vlan {
 	u16 vid;
 };
 
+struct ocelot_psfp_list {
+	struct list_head stream_list;
+	struct list_head sfi_list;
+	struct list_head sgi_list;
+};
+
 enum ocelot_sb {
 	OCELOT_SB_BUF,
 	OCELOT_SB_REF,
@@ -673,6 +679,8 @@ struct ocelot {
 	struct ocelot_vcap_block	block[3];
 	struct vcap_props		*vcap;
 
+	struct ocelot_psfp_list		psfp;
+
 	/* Workqueue to check statistics for overflow with its lock */
 	struct mutex			stats_lock;
 	u64				*stats;
diff --git a/include/soc/mscc/ocelot_ana.h b/include/soc/mscc/ocelot_ana.h
index 1669481d9779..67e0ae05a5ab 100644
--- a/include/soc/mscc/ocelot_ana.h
+++ b/include/soc/mscc/ocelot_ana.h
@@ -227,6 +227,11 @@
 #define ANA_TABLES_SFIDACCESS_SFID_TBL_CMD(x)             ((x) & GENMASK(1, 0))
 #define ANA_TABLES_SFIDACCESS_SFID_TBL_CMD_M              GENMASK(1, 0)
 
+#define SFIDACCESS_CMD_IDLE                               0
+#define SFIDACCESS_CMD_READ                               1
+#define SFIDACCESS_CMD_WRITE                              2
+#define SFIDACCESS_CMD_INIT                               3
+
 #define ANA_TABLES_SFIDTIDX_SGID_VALID                    BIT(26)
 #define ANA_TABLES_SFIDTIDX_SGID(x)                       (((x) << 18) & GENMASK(25, 18))
 #define ANA_TABLES_SFIDTIDX_SGID_M                        GENMASK(25, 18)
@@ -255,6 +260,11 @@
 #define ANA_SG_CONFIG_REG_3_INIT_IPS(x)                   (((x) << 21) & GENMASK(24, 21))
 #define ANA_SG_CONFIG_REG_3_INIT_IPS_M                    GENMASK(24, 21)
 #define ANA_SG_CONFIG_REG_3_INIT_IPS_X(x)                 (((x) & GENMASK(24, 21)) >> 21)
+#define ANA_SG_CONFIG_REG_3_IPV_VALID                     BIT(24)
+#define ANA_SG_CONFIG_REG_3_IPV_INVALID(x)                (((x) << 24) & GENMASK(24, 24))
+#define ANA_SG_CONFIG_REG_3_INIT_IPV(x)                   (((x) << 21) & GENMASK(23, 21))
+#define ANA_SG_CONFIG_REG_3_INIT_IPV_M                    GENMASK(23, 21)
+#define ANA_SG_CONFIG_REG_3_INIT_IPV_X(x)                 (((x) & GENMASK(23, 21)) >> 21)
 #define ANA_SG_CONFIG_REG_3_INIT_GATE_STATE               BIT(25)
 
 #define ANA_SG_GCL_GS_CONFIG_RSZ                          0x4
-- 
2.17.1

[PATCH v4 net-next 6/8] net: dsa: felix: add stream gate settings for psfp

[Xiaoliang Yang]

This patch adds stream gate settings for PSFP. Use SGI table to store
stream gate entries. Disable the gate entry when it is not used by any
stream.

Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
---
 drivers/net/dsa/ocelot/felix_vsc9959.c | 217 ++++++++++++++++++++++++-
 1 file changed, 213 insertions(+), 4 deletions(-)

diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
index 52d10aab93b2..9264934631d7 100644
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -8,6 +8,7 @@
 #include <soc/mscc/ocelot_ana.h>
 #include <soc/mscc/ocelot_ptp.h>
 #include <soc/mscc/ocelot_sys.h>
+#include <net/tc_act/tc_gate.h>
 #include <soc/mscc/ocelot.h>
 #include <linux/dsa/ocelot.h>
 #include <linux/pcs-lynx.h>
@@ -1341,6 +1342,8 @@ static int vsc9959_port_setup_tc(struct dsa_switch *ds, int port,
 #define VSC9959_PSFP_SFID_MAX			175
 #define VSC9959_PSFP_GATE_ID_MAX		183
 #define VSC9959_PSFP_POLICER_MAX		383
+#define VSC9959_PSFP_GATE_LIST_NUM		4
+#define VSC9959_PSFP_GATE_CYCLETIME_MIN		5000
 
 struct felix_stream {
 	struct list_head list;
@@ -1374,6 +1377,24 @@ struct felix_stream_filter_counters {
 	u32 red;
 };
 
+struct felix_stream_gate {
+	u32 index;
+	u8 enable;
+	u8 ipv_valid;
+	u8 init_ipv;
+	u64 basetime;
+	u64 cycletime;
+	u64 cycletime_ext;
+	u32 num_entries;
+	struct action_gate_entry entries[0];
+};
+
+struct felix_stream_gate_entry {
+	struct list_head list;
+	refcount_t refcount;
+	u32 index;
+};
+
 static int vsc9959_stream_identify(struct flow_cls_offload *f,
 				   struct felix_stream *stream)
 {
@@ -1623,6 +1644,18 @@ static int vsc9959_psfp_sfi_table_add(struct ocelot *ocelot,
 	return 0;
 }
 
+static struct felix_stream_filter *
+vsc9959_psfp_sfi_table_get(struct list_head *sfi_list, u32 index)
+{
+	struct felix_stream_filter *tmp;
+
+	list_for_each_entry(tmp, sfi_list, list)
+		if (tmp->index == index)
+			return tmp;
+
+	return NULL;
+}
+
 static void vsc9959_psfp_sfi_table_del(struct ocelot *ocelot, u32 index)
 {
 	struct felix_stream_filter *tmp, *n;
@@ -1644,6 +1677,152 @@ static void vsc9959_psfp_sfi_table_del(struct ocelot *ocelot, u32 index)
 		}
 }
 
+static void vsc9959_psfp_parse_gate(const struct flow_action_entry *entry,
+				    struct felix_stream_gate *sgi)
+{
+	sgi->index = entry->gate.index;
+	sgi->ipv_valid = (entry->gate.prio < 0) ? 0 : 1;
+	sgi->init_ipv = (sgi->ipv_valid) ? entry->gate.prio : 0;
+	sgi->basetime = entry->gate.basetime;
+	sgi->cycletime = entry->gate.cycletime;
+	sgi->num_entries = entry->gate.num_entries;
+	sgi->enable = 1;
+
+	memcpy(sgi->entries, entry->gate.entries,
+	       entry->gate.num_entries * sizeof(struct action_gate_entry));
+}
+
+static u32 vsc9959_sgi_cfg_status(struct ocelot *ocelot)
+{
+	return ocelot_read(ocelot, ANA_SG_ACCESS_CTRL);
+}
+
+static int vsc9959_psfp_sgi_set(struct ocelot *ocelot,
+				struct felix_stream_gate *sgi)
+{
+	struct action_gate_entry *e;
+	struct timespec64 base_ts;
+	u32 interval_sum = 0;
+	u32 val;
+	int i;
+
+	if (sgi->index > VSC9959_PSFP_GATE_ID_MAX)
+		return -EINVAL;
+
+	ocelot_write(ocelot, ANA_SG_ACCESS_CTRL_SGID(sgi->index),
+		     ANA_SG_ACCESS_CTRL);
+
+	if (!sgi->enable) {
+		ocelot_rmw(ocelot, ANA_SG_CONFIG_REG_3_INIT_GATE_STATE,
+			   ANA_SG_CONFIG_REG_3_INIT_GATE_STATE |
+			   ANA_SG_CONFIG_REG_3_GATE_ENABLE,
+			   ANA_SG_CONFIG_REG_3);
+
+		return 0;
+	}
+
+	if (sgi->cycletime < VSC9959_PSFP_GATE_CYCLETIME_MIN ||
+	    sgi->cycletime > NSEC_PER_SEC)
+		return -EINVAL;
+
+	if (sgi->num_entries > VSC9959_PSFP_GATE_LIST_NUM)
+		return -EINVAL;
+
+	vsc9959_new_base_time(ocelot, sgi->basetime, sgi->cycletime, &base_ts);
+	ocelot_write(ocelot, base_ts.tv_nsec, ANA_SG_CONFIG_REG_1);
+	val = lower_32_bits(base_ts.tv_sec);
+	ocelot_write(ocelot, val, ANA_SG_CONFIG_REG_2);
+
+	val = upper_32_bits(base_ts.tv_sec);
+	ocelot_write(ocelot,
+		     (sgi->ipv_valid ? ANA_SG_CONFIG_REG_3_IPV_VALID : 0) |
+		     ANA_SG_CONFIG_REG_3_INIT_IPV(sgi->init_ipv) |
+		     ANA_SG_CONFIG_REG_3_GATE_ENABLE |
+		     ANA_SG_CONFIG_REG_3_LIST_LENGTH(sgi->num_entries) |
+		     ANA_SG_CONFIG_REG_3_INIT_GATE_STATE |
+		     ANA_SG_CONFIG_REG_3_BASE_TIME_SEC_MSB(val),
+		     ANA_SG_CONFIG_REG_3);
+
+	ocelot_write(ocelot, sgi->cycletime, ANA_SG_CONFIG_REG_4);
+
+	e = sgi->entries;
+	for (i = 0; i < sgi->num_entries; i++) {
+		u32 ips = (e[i].ipv < 0) ? 0 : (e[i].ipv + 8);
+
+		ocelot_write_rix(ocelot, ANA_SG_GCL_GS_CONFIG_IPS(ips) |
+				 (e[i].gate_state ?
+				  ANA_SG_GCL_GS_CONFIG_GATE_STATE : 0),
+				 ANA_SG_GCL_GS_CONFIG, i);
+
+		interval_sum += e[i].interval;
+		ocelot_write_rix(ocelot, interval_sum, ANA_SG_GCL_TI_CONFIG, i);
+	}
+
+	ocelot_rmw(ocelot, ANA_SG_ACCESS_CTRL_CONFIG_CHANGE,
+		   ANA_SG_ACCESS_CTRL_CONFIG_CHANGE,
+		   ANA_SG_ACCESS_CTRL);
+
+	return readx_poll_timeout(vsc9959_sgi_cfg_status, ocelot, val,
+				  (!(ANA_SG_ACCESS_CTRL_CONFIG_CHANGE & val)),
+				  10, 100000);
+}
+
+static int vsc9959_psfp_sgi_table_add(struct ocelot *ocelot,
+				      struct felix_stream_gate *sgi)
+{
+	struct felix_stream_gate_entry *tmp;
+	struct ocelot_psfp_list *psfp;
+	int ret;
+
+	psfp = &ocelot->psfp;
+
+	list_for_each_entry(tmp, &psfp->sgi_list, list)
+		if (tmp->index == sgi->index) {
+			refcount_inc(&tmp->refcount);
+			return 0;
+		}
+
+	tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
+	if (!tmp)
+		return -ENOMEM;
+
+	ret = vsc9959_psfp_sgi_set(ocelot, sgi);
+	if (ret) {
+		kfree(tmp);
+		return ret;
+	}
+
+	tmp->index = sgi->index;
+	refcount_set(&tmp->refcount, 1);
+	list_add_tail(&tmp->list, &psfp->sgi_list);
+
+	return 0;
+}
+
+static void vsc9959_psfp_sgi_table_del(struct ocelot *ocelot,
+				       u32 index)
+{
+	struct felix_stream_gate_entry *tmp, *n;
+	struct felix_stream_gate sgi = {0};
+	struct ocelot_psfp_list *psfp;
+	u8 z;
+
+	psfp = &ocelot->psfp;
+
+	list_for_each_entry_safe(tmp, n, &psfp->sgi_list, list)
+		if (tmp->index == index) {
+			z = refcount_dec_and_test(&tmp->refcount);
+			if (z) {
+				sgi.index = index;
+				sgi.enable = 0;
+				vsc9959_psfp_sgi_set(ocelot, &sgi);
+				list_del(&tmp->list);
+				kfree(tmp);
+			}
+			break;
+		}
+}
+
 static void vsc9959_psfp_counters_get(struct ocelot *ocelot, u32 index,
 				      struct felix_stream_filter_counters *counters)
 {
@@ -1671,8 +1850,9 @@ static int vsc9959_psfp_filter_add(struct ocelot *ocelot,
 	const struct flow_action_entry *a;
 	struct felix_stream *stream_entry;
 	struct felix_stream stream = {0};
+	struct felix_stream_gate *sgi;
 	struct ocelot_psfp_list *psfp;
-	int ret, i;
+	int ret, i, size;
 
 	psfp = &ocelot->psfp;
 
@@ -1685,6 +1865,18 @@ static int vsc9959_psfp_filter_add(struct ocelot *ocelot,
 	flow_action_for_each(i, a, &f->rule->action) {
 		switch (a->id) {
 		case FLOW_ACTION_GATE:
+			size = struct_size(sgi, entries, a->gate.num_entries);
+			sgi = kzalloc(size, GFP_KERNEL);
+			vsc9959_psfp_parse_gate(a, sgi);
+			ret = vsc9959_psfp_sgi_table_add(ocelot, sgi);
+			if (ret) {
+				kfree(sgi);
+				return ret;
+			}
+			sfi.sg_valid = 1;
+			sfi.sgid = sgi->index;
+			kfree(sgi);
+			break;
 		case FLOW_ACTION_POLICE:
 		default:
 			return -EOPNOTSUPP;
@@ -1695,7 +1887,8 @@ static int vsc9959_psfp_filter_add(struct ocelot *ocelot,
 	stream_entry = vsc9959_stream_table_lookup(&psfp->stream_list, &stream);
 	if (stream_entry) {
 		NL_SET_ERR_MSG_MOD(extack, "This stream is already added");
-		return -EEXIST;
+		ret = -EEXIST;
+		goto err;
 	}
 
 	sfi.prio_valid = (stream.prio < 0 ? 0 : 1);
@@ -1704,14 +1897,22 @@ static int vsc9959_psfp_filter_add(struct ocelot *ocelot,
 
 	ret = vsc9959_psfp_sfi_table_add(ocelot, &sfi);
 	if (ret)
-		return ret;
+		goto err;
 
 	stream.sfid = sfi.index;
 	stream.sfid_valid = 1;
 	ret = vsc9959_stream_table_add(ocelot, &psfp->stream_list,
 				       &stream, extack);
-	if (ret)
+	if (ret) {
 		vsc9959_psfp_sfi_table_del(ocelot, stream.sfid);
+		goto err;
+	}
+
+	return 0;
+
+err:
+	if (sfi.sg_valid)
+		vsc9959_psfp_sgi_table_del(ocelot, sfi.sgid);
 
 	return ret;
 }
@@ -1719,6 +1920,7 @@ static int vsc9959_psfp_filter_add(struct ocelot *ocelot,
 static int vsc9959_psfp_filter_del(struct ocelot *ocelot,
 				   struct flow_cls_offload *f)
 {
+	static struct felix_stream_filter *sfi;
 	struct ocelot_psfp_list *psfp;
 	struct felix_stream *stream;
 
@@ -1728,6 +1930,13 @@ static int vsc9959_psfp_filter_del(struct ocelot *ocelot,
 	if (!stream)
 		return -ENOMEM;
 
+	sfi = vsc9959_psfp_sfi_table_get(&psfp->sfi_list, stream->sfid);
+	if (!sfi)
+		return -ENOMEM;
+
+	if (sfi->sg_valid)
+		vsc9959_psfp_sgi_table_del(ocelot, sfi->sgid);
+
 	vsc9959_psfp_sfi_table_del(ocelot, stream->sfid);
 
 	stream->sfid_valid = 0;
-- 
2.17.1

[PATCH v4 net-next 7/8] net: mscc: ocelot: use index to set vcap policer

[Xiaoliang Yang]

Policer was previously automatically assigned from the highest index to
the lowest index from policer pool. But police action of tc flower now
uses index to set an police entry. This patch uses the police index to
set vcap policers, so that one policer can be shared by multiple rules.

Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
---
 drivers/net/dsa/ocelot/felix.c             |   2 +
 drivers/net/dsa/ocelot/felix.h             |   2 +
 drivers/net/dsa/ocelot/felix_vsc9959.c     |   4 +
 drivers/net/ethernet/mscc/ocelot_flower.c  |   5 +
 drivers/net/ethernet/mscc/ocelot_vcap.c    | 103 +++++++++++++--------
 drivers/net/ethernet/mscc/ocelot_vsc7514.c |   7 ++
 include/soc/mscc/ocelot.h                  |  11 ++-
 7 files changed, 96 insertions(+), 38 deletions(-)

diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c
index 3656e67af789..1505ef2016da 100644
--- a/drivers/net/dsa/ocelot/felix.c
+++ b/drivers/net/dsa/ocelot/felix.c
@@ -984,6 +984,8 @@ static int felix_init_structs(struct felix *felix, int num_phys_ports)
 	ocelot->num_stats	= felix->info->num_stats;
 	ocelot->num_mact_rows	= felix->info->num_mact_rows;
 	ocelot->vcap		= felix->info->vcap;
+	ocelot->vcap_pol.base	= felix->info->vcap_pol_base;
+	ocelot->vcap_pol.max	= felix->info->vcap_pol_max;
 	ocelot->ops		= felix->info->ops;
 	ocelot->npi_inj_prefix	= OCELOT_TAG_PREFIX_SHORT;
 	ocelot->npi_xtr_prefix	= OCELOT_TAG_PREFIX_SHORT;
diff --git a/drivers/net/dsa/ocelot/felix.h b/drivers/net/dsa/ocelot/felix.h
index 5854bab43327..1a299717b8d1 100644
--- a/drivers/net/dsa/ocelot/felix.h
+++ b/drivers/net/dsa/ocelot/felix.h
@@ -21,6 +21,8 @@ struct felix_info {
 	int				num_ports;
 	int				num_tx_queues;
 	struct vcap_props		*vcap;
+	u16				vcap_pol_base;
+	u16				vcap_pol_max;
 	int				switch_pci_bar;
 	int				imdio_pci_bar;
 	const struct ptp_clock_info	*ptp_caps;
diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
index 9264934631d7..1418d2a66bd6 100644
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -19,6 +19,8 @@
 #include "felix.h"
 
 #define VSC9959_TAS_GCL_ENTRY_MAX	63
+#define VSC9959_VCAP_POLICER_BASE	63
+#define VSC9959_VCAP_POLICER_MAX	383
 
 static const u32 vsc9959_ana_regmap[] = {
 	REG(ANA_ADVLEARN,			0x0089a0),
@@ -1999,6 +2001,8 @@ static const struct felix_info felix_info_vsc9959 = {
 	.stats_layout		= vsc9959_stats_layout,
 	.num_stats		= ARRAY_SIZE(vsc9959_stats_layout),
 	.vcap			= vsc9959_vcap_props,
+	.vcap_pol_base		= VSC9959_VCAP_POLICER_BASE,
+	.vcap_pol_max		= VSC9959_VCAP_POLICER_MAX,
 	.num_mact_rows		= 2048,
 	.num_ports		= 6,
 	.num_tx_queues		= OCELOT_NUM_TC,
diff --git a/drivers/net/ethernet/mscc/ocelot_flower.c b/drivers/net/ethernet/mscc/ocelot_flower.c
index daeaee99933d..bc8a65c227ca 100644
--- a/drivers/net/ethernet/mscc/ocelot_flower.c
+++ b/drivers/net/ethernet/mscc/ocelot_flower.c
@@ -241,6 +241,11 @@ static int ocelot_flower_parse_action(struct ocelot *ocelot, int port,
 				return -EOPNOTSUPP;
 			}
 			filter->action.police_ena = true;
+			filter->action.pol_ix = a->police.index +
+						ocelot->vcap_pol.base;
+			if (filter->action.pol_ix > ocelot->vcap_pol.max)
+				return -EINVAL;
+
 			rate = a->police.rate_bytes_ps;
 			filter->action.pol.rate = div_u64(rate, 1000) * 8;
 			filter->action.pol.burst = a->police.burst;
diff --git a/drivers/net/ethernet/mscc/ocelot_vcap.c b/drivers/net/ethernet/mscc/ocelot_vcap.c
index 7945393a0655..1639c2780343 100644
--- a/drivers/net/ethernet/mscc/ocelot_vcap.c
+++ b/drivers/net/ethernet/mscc/ocelot_vcap.c
@@ -887,10 +887,18 @@ static void vcap_entry_set(struct ocelot *ocelot, int ix,
 		return es0_entry_set(ocelot, ix, filter);
 }
 
-static int ocelot_vcap_policer_add(struct ocelot *ocelot, u32 pol_ix,
-				   struct ocelot_policer *pol)
+struct vcap_policer_entry {
+	struct list_head list;
+	refcount_t refcount;
+	u32 pol_ix;
+};
+
+int ocelot_vcap_policer_add(struct ocelot *ocelot, u32 pol_ix,
+			    struct ocelot_policer *pol)
 {
 	struct qos_policer_conf pp = { 0 };
+	struct vcap_policer_entry *tmp;
+	int ret;
 
 	if (!pol)
 		return -EINVAL;
@@ -899,57 +907,74 @@ static int ocelot_vcap_policer_add(struct ocelot *ocelot, u32 pol_ix,
 	pp.pir = pol->rate;
 	pp.pbs = pol->burst;
 
-	return qos_policer_conf_set(ocelot, 0, pol_ix, &pp);
+	list_for_each_entry(tmp, &ocelot->vcap_pol.pol_list, list)
+		if (tmp->pol_ix == pol_ix) {
+			refcount_inc(&tmp->refcount);
+			return 0;
+		}
+
+	tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
+	if (!tmp)
+		return -ENOMEM;
+
+	ret = qos_policer_conf_set(ocelot, 0, pol_ix, &pp);
+	if (ret) {
+		kfree(tmp);
+		return ret;
+	}
+
+	tmp->pol_ix = pol_ix;
+	refcount_set(&tmp->refcount, 1);
+	list_add_tail(&tmp->list, &ocelot->vcap_pol.pol_list);
+
+	return 0;
 }
+EXPORT_SYMBOL(ocelot_vcap_policer_add);
 
-static void ocelot_vcap_policer_del(struct ocelot *ocelot,
-				    struct ocelot_vcap_block *block,
-				    u32 pol_ix)
+int ocelot_vcap_policer_del(struct ocelot *ocelot, u32 pol_ix)
 {
-	struct ocelot_vcap_filter *filter;
 	struct qos_policer_conf pp = {0};
-	int index = -1;
-
-	if (pol_ix < block->pol_lpr)
-		return;
-
-	list_for_each_entry(filter, &block->rules, list) {
-		index++;
-		if (filter->block_id == VCAP_IS2 &&
-		    filter->action.police_ena &&
-		    filter->action.pol_ix < pol_ix) {
-			filter->action.pol_ix += 1;
-			ocelot_vcap_policer_add(ocelot, filter->action.pol_ix,
-						&filter->action.pol);
-			is2_entry_set(ocelot, index, filter);
+	struct vcap_policer_entry *tmp, *n;
+	u8 z = 0;
+
+	list_for_each_entry_safe(tmp, n, &ocelot->vcap_pol.pol_list, list)
+		if (tmp->pol_ix == pol_ix) {
+			z = refcount_dec_and_test(&tmp->refcount);
+			if (z) {
+				list_del(&tmp->list);
+				kfree(tmp);
+			}
 		}
-	}
 
-	pp.mode = MSCC_QOS_RATE_MODE_DISABLED;
-	qos_policer_conf_set(ocelot, 0, pol_ix, &pp);
+	if (z) {
+		pp.mode = MSCC_QOS_RATE_MODE_DISABLED;
+		return qos_policer_conf_set(ocelot, 0, pol_ix, &pp);
+	}
 
-	block->pol_lpr++;
+	return 0;
 }
+EXPORT_SYMBOL(ocelot_vcap_policer_del);
 
-static void ocelot_vcap_filter_add_to_block(struct ocelot *ocelot,
-					    struct ocelot_vcap_block *block,
-					    struct ocelot_vcap_filter *filter)
+static int ocelot_vcap_filter_add_to_block(struct ocelot *ocelot,
+					   struct ocelot_vcap_block *block,
+					   struct ocelot_vcap_filter *filter)
 {
 	struct ocelot_vcap_filter *tmp;
 	struct list_head *pos, *n;
+	int ret;
 
 	if (filter->block_id == VCAP_IS2 && filter->action.police_ena) {
-		block->pol_lpr--;
-		filter->action.pol_ix = block->pol_lpr;
-		ocelot_vcap_policer_add(ocelot, filter->action.pol_ix,
-					&filter->action.pol);
+		ret = ocelot_vcap_policer_add(ocelot, filter->action.pol_ix,
+					      &filter->action.pol);
+		if (ret)
+			return ret;
 	}
 
 	block->count++;
 
 	if (list_empty(&block->rules)) {
 		list_add(&filter->list, &block->rules);
-		return;
+		return 0;
 	}
 
 	list_for_each_safe(pos, n, &block->rules) {
@@ -958,6 +983,8 @@ static void ocelot_vcap_filter_add_to_block(struct ocelot *ocelot,
 			break;
 	}
 	list_add(&filter->list, pos->prev);
+
+	return 0;
 }
 
 static bool ocelot_vcap_filter_equal(const struct ocelot_vcap_filter *a,
@@ -1132,7 +1159,7 @@ int ocelot_vcap_filter_add(struct ocelot *ocelot,
 			   struct netlink_ext_ack *extack)
 {
 	struct ocelot_vcap_block *block = &ocelot->block[filter->block_id];
-	int i, index;
+	int i, index, ret;
 
 	if (!ocelot_exclusive_mac_etype_filter_rules(ocelot, filter)) {
 		NL_SET_ERR_MSG_MOD(extack,
@@ -1141,7 +1168,9 @@ int ocelot_vcap_filter_add(struct ocelot *ocelot,
 	}
 
 	/* Add filter to the linked list */
-	ocelot_vcap_filter_add_to_block(ocelot, block, filter);
+	ret = ocelot_vcap_filter_add_to_block(ocelot, block, filter);
+	if (ret)
+		return ret;
 
 	/* Get the index of the inserted filter */
 	index = ocelot_vcap_block_get_filter_index(block, filter);
@@ -1174,7 +1203,7 @@ static void ocelot_vcap_block_remove_filter(struct ocelot *ocelot,
 		if (ocelot_vcap_filter_equal(filter, tmp)) {
 			if (tmp->block_id == VCAP_IS2 &&
 			    tmp->action.police_ena)
-				ocelot_vcap_policer_del(ocelot, block,
+				ocelot_vcap_policer_del(ocelot,
 							tmp->action.pol_ix);
 
 			list_del(pos);
@@ -1350,13 +1379,13 @@ int ocelot_vcap_init(struct ocelot *ocelot)
 		struct vcap_props *vcap = &ocelot->vcap[i];
 
 		INIT_LIST_HEAD(&block->rules);
-		block->pol_lpr = OCELOT_POLICER_DISCARD - 1;
 
 		ocelot_vcap_detect_constants(ocelot, vcap);
 		ocelot_vcap_init_one(ocelot, vcap);
 	}
 
 	INIT_LIST_HEAD(&ocelot->dummy_rules);
+	INIT_LIST_HEAD(&ocelot->vcap_pol.pol_list);
 
 	return 0;
 }
diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
index 291ae6817c26..403c47d05304 100644
--- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
+++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
@@ -20,6 +20,9 @@
 #include <soc/mscc/ocelot_hsio.h>
 #include "ocelot.h"
 
+#define VSC7514_VCAP_POLICER_BASE			128
+#define VSC7514_VCAP_POLICER_MAX			191
+
 static const u32 ocelot_ana_regmap[] = {
 	REG(ANA_ADVLEARN,				0x009000),
 	REG(ANA_VLANMASK,				0x009004),
@@ -1128,6 +1131,10 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
 	ocelot->num_flooding_pgids = 1;
 
 	ocelot->vcap = vsc7514_vcap_props;
+
+	ocelot->vcap_pol.base = VSC7514_VCAP_POLICER_BASE;
+	ocelot->vcap_pol.max = VSC7514_VCAP_POLICER_MAX;
+
 	ocelot->npi = -1;
 
 	err = ocelot_init(ocelot);
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index a611f9cd5935..fa006168e7fe 100644
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -571,10 +571,15 @@ struct ocelot_ops {
 			      struct flow_stats *stats);
 };
 
+struct ocelot_vcap_policer {
+	struct list_head pol_list;
+	u16 base;
+	u16 max;
+};
+
 struct ocelot_vcap_block {
 	struct list_head rules;
 	int count;
-	int pol_lpr;
 };
 
 struct ocelot_vlan {
@@ -677,6 +682,7 @@ struct ocelot {
 
 	struct list_head		dummy_rules;
 	struct ocelot_vcap_block	block[3];
+	struct ocelot_vcap_policer	vcap_pol;
 	struct vcap_props		*vcap;
 
 	struct ocelot_psfp_list		psfp;
@@ -941,6 +947,9 @@ int ocelot_mact_lookup(struct ocelot *ocelot, const unsigned char mac[ETH_ALEN],
 void ocelot_mact_write(struct ocelot *ocelot, int port,
 		       const struct ocelot_mact_entry *entry,
 		       int row, int col);
+int ocelot_vcap_policer_add(struct ocelot *ocelot, u32 pol_ix,
+			    struct ocelot_policer *pol);
+int ocelot_vcap_policer_del(struct ocelot *ocelot, u32 pol_ix);
 
 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
 int ocelot_mrp_add(struct ocelot *ocelot, int port,
-- 
2.17.1

[PATCH v4 net-next 8/8] net: dsa: felix: use vcap policer to set flow meter for psfp

[Xiaoliang Yang]

This patch add police action to set flow meter table which is defined
in IEEE802.1Qci. Flow metering is two rates two buckets and three color
marker to policing the frames, we only enable one rate one bucket in
this patch.

Flow metering shares a same policer pool with VCAP policers, so the PSFP
policer calls ocelot_vcap_policer_add() and ocelot_vcap_policer_del() to
set flow meter police.

Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
---
 drivers/net/dsa/ocelot/felix_vsc9959.c | 32 +++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
index 1418d2a66bd6..1118101d0ee8 100644
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -1343,6 +1343,7 @@ static int vsc9959_port_setup_tc(struct dsa_switch *ds, int port,
 
 #define VSC9959_PSFP_SFID_MAX			175
 #define VSC9959_PSFP_GATE_ID_MAX		183
+#define VSC9959_PSFP_POLICER_BASE		63
 #define VSC9959_PSFP_POLICER_MAX		383
 #define VSC9959_PSFP_GATE_LIST_NUM		4
 #define VSC9959_PSFP_GATE_CYCLETIME_MIN		5000
@@ -1854,7 +1855,10 @@ static int vsc9959_psfp_filter_add(struct ocelot *ocelot,
 	struct felix_stream stream = {0};
 	struct felix_stream_gate *sgi;
 	struct ocelot_psfp_list *psfp;
+	struct ocelot_policer pol;
 	int ret, i, size;
+	u64 rate, burst;
+	u32 index;
 
 	psfp = &ocelot->psfp;
 
@@ -1873,13 +1877,33 @@ static int vsc9959_psfp_filter_add(struct ocelot *ocelot,
 			ret = vsc9959_psfp_sgi_table_add(ocelot, sgi);
 			if (ret) {
 				kfree(sgi);
-				return ret;
+				goto err;
 			}
 			sfi.sg_valid = 1;
 			sfi.sgid = sgi->index;
 			kfree(sgi);
 			break;
 		case FLOW_ACTION_POLICE:
+			index = a->police.index + VSC9959_PSFP_POLICER_BASE;
+			if (index > VSC9959_PSFP_POLICER_MAX) {
+				ret = -EINVAL;
+				goto err;
+			}
+
+			rate = a->police.rate_bytes_ps;
+			burst = rate * PSCHED_NS2TICKS(a->police.burst);
+			pol = (struct ocelot_policer) {
+				.burst = div_u64(burst, PSCHED_TICKS_PER_SEC),
+				.rate = div_u64(rate, 1000) * 8,
+			};
+			ret = ocelot_vcap_policer_add(ocelot, index, &pol);
+			if (ret)
+				goto err;
+
+			sfi.fm_valid = 1;
+			sfi.fmid = index;
+			sfi.maxsdu = a->police.mtu;
+			break;
 		default:
 			return -EOPNOTSUPP;
 		}
@@ -1916,6 +1940,9 @@ static int vsc9959_psfp_filter_add(struct ocelot *ocelot,
 	if (sfi.sg_valid)
 		vsc9959_psfp_sgi_table_del(ocelot, sfi.sgid);
 
+	if (sfi.fm_valid)
+		ocelot_vcap_policer_del(ocelot, sfi.fmid);
+
 	return ret;
 }
 
@@ -1939,6 +1966,9 @@ static int vsc9959_psfp_filter_del(struct ocelot *ocelot,
 	if (sfi->sg_valid)
 		vsc9959_psfp_sgi_table_del(ocelot, sfi->sgid);
 
+	if (sfi->fm_valid)
+		ocelot_vcap_policer_del(ocelot, sfi->fmid);
+
 	vsc9959_psfp_sfi_table_del(ocelot, stream->sfid);
 
 	stream->sfid_valid = 0;
-- 
2.17.1

Re: [PATCH v4 net-next 0/8] net: dsa: felix: psfp support on vsc9959

[Jakub Kicinski]

On Tue,  7 Sep 2021 17:09:07 +0800 Xiaoliang Yang wrote:
> VSC9959 hardware supports Per-Stream Filtering and Policing(PSFP).
> This patch series add PSFP support on tc flower offload of ocelot
> driver. Use chain 30000 to distinguish PSFP from VCAP blocks. Add gate
> and police set to support PSFP in VSC9959 driver.

# Form letter - net-next is closed

We have already sent the networking pull request for 5.15
and therefore net-next is closed for new drivers, features,
code refactoring and optimizations. We are currently accepting
bug fixes only.

Please repost when net-next reopens after 5.15-rc1 is cut.

Look out for the announcement on the mailing list or check:
http://vger.kernel.org/~davem/net-next.html

RFC patches sent for review only are obviously welcome at any time.

[PATCH v4 net-next 3/8] net: mscc: ocelot: set vcap IS2 chain to goto PSFP chain

[Xiaoliang Yang]

Some chips in the ocelot series such as VSC9959 support Per-Stream
Filtering and Policing(PSFP), which is processing after VCAP blocks.
We set this block on chain 30000 and set vcap IS2 chain to goto PSFP
chain if hardware support.

Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
---
 drivers/net/ethernet/mscc/ocelot_flower.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/mscc/ocelot_flower.c b/drivers/net/ethernet/mscc/ocelot_flower.c
index 8b843d3c9189..ce812194e44c 100644
--- a/drivers/net/ethernet/mscc/ocelot_flower.c
+++ b/drivers/net/ethernet/mscc/ocelot_flower.c
@@ -20,6 +20,9 @@
 	(1 * VCAP_BLOCK + (lookup) * VCAP_LOOKUP)
 #define VCAP_IS2_CHAIN(lookup, pag)	\
 	(2 * VCAP_BLOCK + (lookup) * VCAP_LOOKUP + (pag))
+/* PSFP chain and block ID */
+#define PSFP_BLOCK_ID			OCELOT_NUM_VCAP_BLOCKS
+#define OCELOT_PSFP_CHAIN		(3 * VCAP_BLOCK)
 
 static int ocelot_chain_to_block(int chain, bool ingress)
 {
@@ -46,6 +49,9 @@ static int ocelot_chain_to_block(int chain, bool ingress)
 			if (chain == VCAP_IS2_CHAIN(lookup, pag))
 				return VCAP_IS2;
 
+	if (chain == OCELOT_PSFP_CHAIN)
+		return PSFP_BLOCK_ID;
+
 	return -EOPNOTSUPP;
 }
 
@@ -84,7 +90,8 @@ static bool ocelot_is_goto_target_valid(int goto_target, int chain,
 			goto_target == VCAP_IS1_CHAIN(1) ||
 			goto_target == VCAP_IS1_CHAIN(2) ||
 			goto_target == VCAP_IS2_CHAIN(0, 0) ||
-			goto_target == VCAP_IS2_CHAIN(1, 0));
+			goto_target == VCAP_IS2_CHAIN(1, 0) ||
+			goto_target == OCELOT_PSFP_CHAIN);
 
 	if (chain == VCAP_IS1_CHAIN(0))
 		return (goto_target == VCAP_IS1_CHAIN(1));
@@ -111,7 +118,11 @@ static bool ocelot_is_goto_target_valid(int goto_target, int chain,
 		if (chain == VCAP_IS2_CHAIN(0, pag))
 			return (goto_target == VCAP_IS2_CHAIN(1, pag));
 
-	/* VCAP IS2 lookup 1 cannot jump anywhere */
+	/* VCAP IS2 lookup 1 can goto to PSFP block if hardware support */
+	for (pag = 0; pag < VCAP_IS2_NUM_PAG; pag++)
+		if (chain == VCAP_IS2_CHAIN(1, pag))
+			return (goto_target == OCELOT_PSFP_CHAIN);
+
 	return false;
 }
 
@@ -353,7 +364,7 @@ static int ocelot_flower_parse_action(struct ocelot *ocelot, int port,
 
 	if (filter->goto_target == -1) {
 		if ((filter->block_id == VCAP_IS2 && filter->lookup == 1) ||
-		    chain == 0) {
+		    chain == 0 || filter->block_id == PSFP_BLOCK_ID) {
 			allow_missing_goto_target = true;
 		} else {
 			NL_SET_ERR_MSG_MOD(extack, "Missing GOTO action");
-- 
2.17.1