[PATCH v7 net-next 1/8] net: mscc: ocelot: add MAC table stream learn and lookup operations
From: Xiaoliang Yang
Date: Thu Nov 18 2021 - 05:01:28 EST
ocelot_mact_learn_streamdata() can be used in VSC9959 to overwrite an
FDB entry with stream data. The stream data includes SFID and SSID which
can be used for PSFP and FRER set.
ocelot_mact_lookup() can be used to check if the given {DMAC, VID} FDB
entry is exist, and also can retrieve the DEST_IDX and entry type for
the FDB entry.
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@xxxxxxx>
---
drivers/net/ethernet/mscc/ocelot.c | 81 +++++++++++++++++++++++++++---
drivers/net/ethernet/mscc/ocelot.h | 13 -----
include/soc/mscc/ocelot.h | 22 ++++++++
3 files changed, 97 insertions(+), 19 deletions(-)
diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index e6c18b598d5c..9e981913d6ba 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -61,9 +61,9 @@ static void ocelot_mact_select(struct ocelot *ocelot,
}
-int ocelot_mact_learn(struct ocelot *ocelot, int port,
- const unsigned char mac[ETH_ALEN],
- unsigned int vid, enum macaccess_entry_type type)
+static int __ocelot_mact_learn(struct ocelot *ocelot, int port,
+ const unsigned char mac[ETH_ALEN],
+ unsigned int vid, enum macaccess_entry_type type)
{
u32 cmd = ANA_TABLES_MACACCESS_VALID |
ANA_TABLES_MACACCESS_DEST_IDX(port) |
@@ -83,8 +83,6 @@ int ocelot_mact_learn(struct ocelot *ocelot, int port,
if (mc_ports & BIT(ocelot->num_phys_ports))
cmd |= ANA_TABLES_MACACCESS_MAC_CPU_COPY;
- mutex_lock(&ocelot->mact_lock);
-
ocelot_mact_select(ocelot, mac, vid);
/* Issue a write command */
@@ -92,9 +90,20 @@ int ocelot_mact_learn(struct ocelot *ocelot, int port,
err = ocelot_mact_wait_for_completion(ocelot);
+ return err;
+}
+
+int ocelot_mact_learn(struct ocelot *ocelot, int port,
+ const unsigned char mac[ETH_ALEN],
+ unsigned int vid, enum macaccess_entry_type type)
+{
+ int ret;
+
+ mutex_lock(&ocelot->mact_lock);
+ ret = __ocelot_mact_learn(ocelot, port, mac, vid, type);
mutex_unlock(&ocelot->mact_lock);
- return err;
+ return ret;
}
EXPORT_SYMBOL(ocelot_mact_learn);
@@ -120,6 +129,66 @@ int ocelot_mact_forget(struct ocelot *ocelot,
}
EXPORT_SYMBOL(ocelot_mact_forget);
+int ocelot_mact_lookup(struct ocelot *ocelot, int *dst_idx,
+ const unsigned char mac[ETH_ALEN],
+ unsigned int vid, enum macaccess_entry_type *type)
+{
+ int val;
+
+ mutex_lock(&ocelot->mact_lock);
+
+ 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)) {
+ mutex_unlock(&ocelot->mact_lock);
+ return -ETIMEDOUT;
+ }
+
+ /* Read back the entry flags */
+ val = ocelot_read(ocelot, ANA_TABLES_MACACCESS);
+
+ mutex_unlock(&ocelot->mact_lock);
+
+ if (!(val & ANA_TABLES_MACACCESS_VALID))
+ return -ENOENT;
+
+ *dst_idx = ANA_TABLES_MACACCESS_DEST_IDX_X(val);
+ *type = ANA_TABLES_MACACCESS_ENTRYTYPE_X(val);
+
+ return 0;
+}
+EXPORT_SYMBOL(ocelot_mact_lookup);
+
+int ocelot_mact_learn_streamdata(struct ocelot *ocelot, int dst_idx,
+ const unsigned char mac[ETH_ALEN],
+ unsigned int vid,
+ enum macaccess_entry_type type,
+ int sfid, int ssid)
+{
+ int ret;
+
+ mutex_lock(&ocelot->mact_lock);
+
+ ocelot_write(ocelot,
+ (sfid < 0 ? 0 : ANA_TABLES_STREAMDATA_SFID_VALID) |
+ ANA_TABLES_STREAMDATA_SFID(sfid) |
+ (ssid < 0 ? 0 : ANA_TABLES_STREAMDATA_SSID_VALID) |
+ ANA_TABLES_STREAMDATA_SSID(ssid),
+ ANA_TABLES_STREAMDATA);
+
+ ret = __ocelot_mact_learn(ocelot, dst_idx, mac, vid, type);
+
+ mutex_unlock(&ocelot->mact_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(ocelot_mact_learn_streamdata);
+
static void ocelot_mact_init(struct ocelot *ocelot)
{
/* Configure the learning mode entries attributes:
diff --git a/drivers/net/ethernet/mscc/ocelot.h b/drivers/net/ethernet/mscc/ocelot.h
index e43da09b8f91..1eb0b5ad51e9 100644
--- a/drivers/net/ethernet/mscc/ocelot.h
+++ b/drivers/net/ethernet/mscc/ocelot.h
@@ -55,19 +55,6 @@ 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 fef3a36b0210..1d5ff11e4100 100644
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -593,6 +593,19 @@ enum ocelot_sb_pool {
OCELOT_SB_POOL_NUM,
};
+/* 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,
+};
+
#define OCELOT_QUIRK_PCS_PERFORMS_RATE_ADAPTATION BIT(0)
#define OCELOT_QUIRK_QSGMII_PORTS_MUST_BE_UP BIT(1)
@@ -870,6 +883,15 @@ 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, int *dst_idx,
+ const unsigned char mac[ETH_ALEN],
+ unsigned int vid, enum macaccess_entry_type *type);
+int ocelot_mact_learn_streamdata(struct ocelot *ocelot, int dst_idx,
+ const unsigned char mac[ETH_ALEN],
+ unsigned int vid,
+ enum macaccess_entry_type type,
+ int sfid, int ssid);
+
#if IS_ENABLED(CONFIG_BRIDGE_MRP)
int ocelot_mrp_add(struct ocelot *ocelot, int port,
const struct switchdev_obj_mrp *mrp);
--
2.17.1