* [PATCH net-next v7 1/9] net: lan966x: Add registers that are used for switch and vlan functionality
2021-12-17 15:53 [PATCH net-next v7 0/9] net: lan966x: Add switchdev and vlan support Horatiu Vultur
@ 2021-12-17 15:53 ` Horatiu Vultur
2021-12-17 15:53 ` [PATCH net-next v7 2/9] dt-bindings: net: lan966x: Extend with the analyzer interrupt Horatiu Vultur
` (7 subsequent siblings)
8 siblings, 0 replies; 18+ messages in thread
From: Horatiu Vultur @ 2021-12-17 15:53 UTC (permalink / raw)
To: netdev, devicetree, linux-kernel
Cc: davem, kuba, robh+dt, UNGLinuxDriver, linux, f.fainelli,
vivien.didelot, vladimir.oltean, andrew, Horatiu Vultur
This patch adds the registers that will be used to enable switchdev and
vlan functionality in the HW.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
.../ethernet/microchip/lan966x/lan966x_regs.h | 129 ++++++++++++++++++
1 file changed, 129 insertions(+)
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_regs.h b/drivers/net/ethernet/microchip/lan966x/lan966x_regs.h
index 879dcd807dec..2f2b26b9f8c6 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_regs.h
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_regs.h
@@ -61,6 +61,9 @@ enum lan966x_target {
#define ANA_ADVLEARN_VLAN_CHK_GET(x)\
FIELD_GET(ANA_ADVLEARN_VLAN_CHK, x)
+/* ANA:ANA:VLANMASK */
+#define ANA_VLANMASK __REG(TARGET_ANA, 0, 1, 29824, 0, 1, 244, 8, 0, 1, 4)
+
/* ANA:ANA:ANAINTR */
#define ANA_ANAINTR __REG(TARGET_ANA, 0, 1, 29824, 0, 1, 244, 16, 0, 1, 4)
@@ -184,6 +187,102 @@ enum lan966x_target {
#define ANA_MACACCESS_MAC_TABLE_CMD_GET(x)\
FIELD_GET(ANA_MACACCESS_MAC_TABLE_CMD, x)
+/* ANA:ANA_TABLES:MACTINDX */
+#define ANA_MACTINDX __REG(TARGET_ANA, 0, 1, 27520, 0, 1, 128, 52, 0, 1, 4)
+
+#define ANA_MACTINDX_BUCKET GENMASK(12, 11)
+#define ANA_MACTINDX_BUCKET_SET(x)\
+ FIELD_PREP(ANA_MACTINDX_BUCKET, x)
+#define ANA_MACTINDX_BUCKET_GET(x)\
+ FIELD_GET(ANA_MACTINDX_BUCKET, x)
+
+#define ANA_MACTINDX_M_INDEX GENMASK(10, 0)
+#define ANA_MACTINDX_M_INDEX_SET(x)\
+ FIELD_PREP(ANA_MACTINDX_M_INDEX, x)
+#define ANA_MACTINDX_M_INDEX_GET(x)\
+ FIELD_GET(ANA_MACTINDX_M_INDEX, x)
+
+/* ANA:ANA_TABLES:VLAN_PORT_MASK */
+#define ANA_VLAN_PORT_MASK __REG(TARGET_ANA, 0, 1, 27520, 0, 1, 128, 56, 0, 1, 4)
+
+#define ANA_VLAN_PORT_MASK_VLAN_PORT_MASK GENMASK(8, 0)
+#define ANA_VLAN_PORT_MASK_VLAN_PORT_MASK_SET(x)\
+ FIELD_PREP(ANA_VLAN_PORT_MASK_VLAN_PORT_MASK, x)
+#define ANA_VLAN_PORT_MASK_VLAN_PORT_MASK_GET(x)\
+ FIELD_GET(ANA_VLAN_PORT_MASK_VLAN_PORT_MASK, x)
+
+/* ANA:ANA_TABLES:VLANACCESS */
+#define ANA_VLANACCESS __REG(TARGET_ANA, 0, 1, 27520, 0, 1, 128, 60, 0, 1, 4)
+
+#define ANA_VLANACCESS_VLAN_TBL_CMD GENMASK(1, 0)
+#define ANA_VLANACCESS_VLAN_TBL_CMD_SET(x)\
+ FIELD_PREP(ANA_VLANACCESS_VLAN_TBL_CMD, x)
+#define ANA_VLANACCESS_VLAN_TBL_CMD_GET(x)\
+ FIELD_GET(ANA_VLANACCESS_VLAN_TBL_CMD, x)
+
+/* ANA:ANA_TABLES:VLANTIDX */
+#define ANA_VLANTIDX __REG(TARGET_ANA, 0, 1, 27520, 0, 1, 128, 64, 0, 1, 4)
+
+#define ANA_VLANTIDX_VLAN_PGID_CPU_DIS BIT(18)
+#define ANA_VLANTIDX_VLAN_PGID_CPU_DIS_SET(x)\
+ FIELD_PREP(ANA_VLANTIDX_VLAN_PGID_CPU_DIS, x)
+#define ANA_VLANTIDX_VLAN_PGID_CPU_DIS_GET(x)\
+ FIELD_GET(ANA_VLANTIDX_VLAN_PGID_CPU_DIS, x)
+
+#define ANA_VLANTIDX_V_INDEX GENMASK(11, 0)
+#define ANA_VLANTIDX_V_INDEX_SET(x)\
+ FIELD_PREP(ANA_VLANTIDX_V_INDEX, x)
+#define ANA_VLANTIDX_V_INDEX_GET(x)\
+ FIELD_GET(ANA_VLANTIDX_V_INDEX, x)
+
+/* ANA:PORT:VLAN_CFG */
+#define ANA_VLAN_CFG(g) __REG(TARGET_ANA, 0, 1, 28672, g, 9, 128, 0, 0, 1, 4)
+
+#define ANA_VLAN_CFG_VLAN_AWARE_ENA BIT(20)
+#define ANA_VLAN_CFG_VLAN_AWARE_ENA_SET(x)\
+ FIELD_PREP(ANA_VLAN_CFG_VLAN_AWARE_ENA, x)
+#define ANA_VLAN_CFG_VLAN_AWARE_ENA_GET(x)\
+ FIELD_GET(ANA_VLAN_CFG_VLAN_AWARE_ENA, x)
+
+#define ANA_VLAN_CFG_VLAN_POP_CNT GENMASK(19, 18)
+#define ANA_VLAN_CFG_VLAN_POP_CNT_SET(x)\
+ FIELD_PREP(ANA_VLAN_CFG_VLAN_POP_CNT, x)
+#define ANA_VLAN_CFG_VLAN_POP_CNT_GET(x)\
+ FIELD_GET(ANA_VLAN_CFG_VLAN_POP_CNT, x)
+
+#define ANA_VLAN_CFG_VLAN_VID GENMASK(11, 0)
+#define ANA_VLAN_CFG_VLAN_VID_SET(x)\
+ FIELD_PREP(ANA_VLAN_CFG_VLAN_VID, x)
+#define ANA_VLAN_CFG_VLAN_VID_GET(x)\
+ FIELD_GET(ANA_VLAN_CFG_VLAN_VID, x)
+
+/* ANA:PORT:DROP_CFG */
+#define ANA_DROP_CFG(g) __REG(TARGET_ANA, 0, 1, 28672, g, 9, 128, 4, 0, 1, 4)
+
+#define ANA_DROP_CFG_DROP_UNTAGGED_ENA BIT(6)
+#define ANA_DROP_CFG_DROP_UNTAGGED_ENA_SET(x)\
+ FIELD_PREP(ANA_DROP_CFG_DROP_UNTAGGED_ENA, x)
+#define ANA_DROP_CFG_DROP_UNTAGGED_ENA_GET(x)\
+ FIELD_GET(ANA_DROP_CFG_DROP_UNTAGGED_ENA, x)
+
+#define ANA_DROP_CFG_DROP_PRIO_S_TAGGED_ENA BIT(3)
+#define ANA_DROP_CFG_DROP_PRIO_S_TAGGED_ENA_SET(x)\
+ FIELD_PREP(ANA_DROP_CFG_DROP_PRIO_S_TAGGED_ENA, x)
+#define ANA_DROP_CFG_DROP_PRIO_S_TAGGED_ENA_GET(x)\
+ FIELD_GET(ANA_DROP_CFG_DROP_PRIO_S_TAGGED_ENA, x)
+
+#define ANA_DROP_CFG_DROP_PRIO_C_TAGGED_ENA BIT(2)
+#define ANA_DROP_CFG_DROP_PRIO_C_TAGGED_ENA_SET(x)\
+ FIELD_PREP(ANA_DROP_CFG_DROP_PRIO_C_TAGGED_ENA, x)
+#define ANA_DROP_CFG_DROP_PRIO_C_TAGGED_ENA_GET(x)\
+ FIELD_GET(ANA_DROP_CFG_DROP_PRIO_C_TAGGED_ENA, x)
+
+#define ANA_DROP_CFG_DROP_MC_SMAC_ENA BIT(0)
+#define ANA_DROP_CFG_DROP_MC_SMAC_ENA_SET(x)\
+ FIELD_PREP(ANA_DROP_CFG_DROP_MC_SMAC_ENA, x)
+#define ANA_DROP_CFG_DROP_MC_SMAC_ENA_GET(x)\
+ FIELD_GET(ANA_DROP_CFG_DROP_MC_SMAC_ENA, x)
+
/* ANA:PORT:CPU_FWD_CFG */
#define ANA_CPU_FWD_CFG(g) __REG(TARGET_ANA, 0, 1, 28672, g, 9, 128, 96, 0, 1, 4)
@@ -589,6 +688,36 @@ enum lan966x_target {
/* QSYS:RES_CTRL:RES_CFG */
#define QSYS_RES_CFG(g) __REG(TARGET_QSYS, 0, 1, 32768, g, 1024, 8, 0, 0, 1, 4)
+/* REW:PORT:PORT_VLAN_CFG */
+#define REW_PORT_VLAN_CFG(g) __REG(TARGET_REW, 0, 1, 0, g, 10, 128, 0, 0, 1, 4)
+
+#define REW_PORT_VLAN_CFG_PORT_TPID GENMASK(31, 16)
+#define REW_PORT_VLAN_CFG_PORT_TPID_SET(x)\
+ FIELD_PREP(REW_PORT_VLAN_CFG_PORT_TPID, x)
+#define REW_PORT_VLAN_CFG_PORT_TPID_GET(x)\
+ FIELD_GET(REW_PORT_VLAN_CFG_PORT_TPID, x)
+
+#define REW_PORT_VLAN_CFG_PORT_VID GENMASK(11, 0)
+#define REW_PORT_VLAN_CFG_PORT_VID_SET(x)\
+ FIELD_PREP(REW_PORT_VLAN_CFG_PORT_VID, x)
+#define REW_PORT_VLAN_CFG_PORT_VID_GET(x)\
+ FIELD_GET(REW_PORT_VLAN_CFG_PORT_VID, x)
+
+/* REW:PORT:TAG_CFG */
+#define REW_TAG_CFG(g) __REG(TARGET_REW, 0, 1, 0, g, 10, 128, 4, 0, 1, 4)
+
+#define REW_TAG_CFG_TAG_CFG GENMASK(8, 7)
+#define REW_TAG_CFG_TAG_CFG_SET(x)\
+ FIELD_PREP(REW_TAG_CFG_TAG_CFG, x)
+#define REW_TAG_CFG_TAG_CFG_GET(x)\
+ FIELD_GET(REW_TAG_CFG_TAG_CFG, x)
+
+#define REW_TAG_CFG_TAG_TPID_CFG GENMASK(6, 5)
+#define REW_TAG_CFG_TAG_TPID_CFG_SET(x)\
+ FIELD_PREP(REW_TAG_CFG_TAG_TPID_CFG, x)
+#define REW_TAG_CFG_TAG_TPID_CFG_GET(x)\
+ FIELD_GET(REW_TAG_CFG_TAG_TPID_CFG, x)
+
/* REW:PORT:PORT_CFG */
#define REW_PORT_CFG(g) __REG(TARGET_REW, 0, 1, 0, g, 10, 128, 8, 0, 1, 4)
--
2.33.0
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH net-next v7 2/9] dt-bindings: net: lan966x: Extend with the analyzer interrupt
2021-12-17 15:53 [PATCH net-next v7 0/9] net: lan966x: Add switchdev and vlan support Horatiu Vultur
2021-12-17 15:53 ` [PATCH net-next v7 1/9] net: lan966x: Add registers that are used for switch and vlan functionality Horatiu Vultur
@ 2021-12-17 15:53 ` Horatiu Vultur
2021-12-17 15:53 ` [PATCH net-next v7 3/9] net: lan966x: add support for interrupts from analyzer Horatiu Vultur
` (6 subsequent siblings)
8 siblings, 0 replies; 18+ messages in thread
From: Horatiu Vultur @ 2021-12-17 15:53 UTC (permalink / raw)
To: netdev, devicetree, linux-kernel
Cc: davem, kuba, robh+dt, UNGLinuxDriver, linux, f.fainelli,
vivien.didelot, vladimir.oltean, andrew, Horatiu Vultur,
Rob Herring
Extend dt-bindings for lan966x with analyzer interrupt.
This interrupt can be generated for example when the HW learn/forgets
an entry in the MAC table.
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
.../devicetree/bindings/net/microchip,lan966x-switch.yaml | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml b/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml
index 5bee665d5fcf..e79e4e166ad8 100644
--- a/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml
+++ b/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml
@@ -37,12 +37,14 @@ properties:
items:
- description: register based extraction
- description: frame dma based extraction
+ - description: analyzer interrupt
interrupt-names:
minItems: 1
items:
- const: xtr
- const: fdma
+ - const: ana
resets:
items:
--
2.33.0
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH net-next v7 3/9] net: lan966x: add support for interrupts from analyzer
2021-12-17 15:53 [PATCH net-next v7 0/9] net: lan966x: Add switchdev and vlan support Horatiu Vultur
2021-12-17 15:53 ` [PATCH net-next v7 1/9] net: lan966x: Add registers that are used for switch and vlan functionality Horatiu Vultur
2021-12-17 15:53 ` [PATCH net-next v7 2/9] dt-bindings: net: lan966x: Extend with the analyzer interrupt Horatiu Vultur
@ 2021-12-17 15:53 ` Horatiu Vultur
2021-12-17 15:53 ` [PATCH net-next v7 4/9] net: lan966x: More MAC table functionality Horatiu Vultur
` (5 subsequent siblings)
8 siblings, 0 replies; 18+ messages in thread
From: Horatiu Vultur @ 2021-12-17 15:53 UTC (permalink / raw)
To: netdev, devicetree, linux-kernel
Cc: davem, kuba, robh+dt, UNGLinuxDriver, linux, f.fainelli,
vivien.didelot, vladimir.oltean, andrew, Horatiu Vultur
This patch adds support for handling the interrupts generated by the
analyzer. Currently, only the MAC table generates these interrupts.
The MAC table will generate an interrupt whenever it learns or forgets
an entry in the table. It is the SW responsibility figure out which
entries were added/removed.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
.../ethernet/microchip/lan966x/lan966x_mac.c | 237 ++++++++++++++++++
.../ethernet/microchip/lan966x/lan966x_main.c | 23 ++
.../ethernet/microchip/lan966x/lan966x_main.h | 6 +
3 files changed, 266 insertions(+)
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c b/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c
index f6878b9f57ef..855ea514f438 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c
@@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
+#include <net/switchdev.h>
#include "lan966x_main.h"
#define LAN966X_MAC_COLUMNS 4
@@ -13,6 +14,23 @@
#define MACACCESS_CMD_WRITE 7
#define MACACCESS_CMD_SYNC_GET_NEXT 8
+#define LAN966X_MAC_INVALID_ROW -1
+
+struct lan966x_mac_entry {
+ struct list_head list;
+ unsigned char mac[ETH_ALEN] __aligned(2);
+ u16 vid;
+ u16 port_index;
+ int row;
+};
+
+struct lan966x_mac_raw_entry {
+ u32 mach;
+ u32 macl;
+ u32 maca;
+ bool processed;
+};
+
static int lan966x_mac_get_status(struct lan966x *lan966x)
{
return lan_rd(lan966x, ANA_MACACCESS);
@@ -98,4 +116,223 @@ void lan966x_mac_init(struct lan966x *lan966x)
/* Clear the MAC table */
lan_wr(MACACCESS_CMD_INIT, lan966x, ANA_MACACCESS);
lan966x_mac_wait_for_completion(lan966x);
+
+ spin_lock_init(&lan966x->mac_lock);
+ INIT_LIST_HEAD(&lan966x->mac_entries);
+}
+
+static struct lan966x_mac_entry *lan966x_mac_alloc_entry(const unsigned char *mac,
+ u16 vid, u16 port_index)
+{
+ struct lan966x_mac_entry *mac_entry;
+
+ mac_entry = kzalloc(sizeof(*mac_entry), GFP_KERNEL);
+ if (!mac_entry)
+ return NULL;
+
+ memcpy(mac_entry->mac, mac, ETH_ALEN);
+ mac_entry->vid = vid;
+ mac_entry->port_index = port_index;
+ mac_entry->row = LAN966X_MAC_INVALID_ROW;
+ return mac_entry;
+}
+
+static void lan966x_fdb_call_notifiers(enum switchdev_notifier_type type,
+ const char *mac, u16 vid,
+ struct net_device *dev)
+{
+ struct switchdev_notifier_fdb_info info = { 0 };
+
+ info.addr = mac;
+ info.vid = vid;
+ info.offloaded = true;
+ call_switchdev_notifiers(type, dev, &info.info, NULL);
+}
+
+void lan966x_mac_purge_entries(struct lan966x *lan966x)
+{
+ struct lan966x_mac_entry *mac_entry, *tmp;
+
+ spin_lock(&lan966x->mac_lock);
+ list_for_each_entry_safe(mac_entry, tmp, &lan966x->mac_entries,
+ list) {
+ lan966x_mac_forget(lan966x, mac_entry->mac, mac_entry->vid,
+ ENTRYTYPE_LOCKED);
+
+ list_del(&mac_entry->list);
+ kfree(mac_entry);
+ }
+ spin_unlock(&lan966x->mac_lock);
+}
+
+static void lan966x_mac_notifiers(enum switchdev_notifier_type type,
+ unsigned char *mac, u32 vid,
+ struct net_device *dev)
+{
+ rtnl_lock();
+ lan966x_fdb_call_notifiers(type, mac, vid, dev);
+ rtnl_unlock();
+}
+
+static void lan966x_mac_process_raw_entry(struct lan966x_mac_raw_entry *raw_entry,
+ u8 *mac, u16 *vid, u32 *dest_idx)
+{
+ mac[0] = (raw_entry->mach >> 8) & 0xff;
+ mac[1] = (raw_entry->mach >> 0) & 0xff;
+ mac[2] = (raw_entry->macl >> 24) & 0xff;
+ mac[3] = (raw_entry->macl >> 16) & 0xff;
+ mac[4] = (raw_entry->macl >> 8) & 0xff;
+ mac[5] = (raw_entry->macl >> 0) & 0xff;
+
+ *vid = (raw_entry->mach >> 16) & 0xfff;
+ *dest_idx = ANA_MACACCESS_DEST_IDX_GET(raw_entry->maca);
+}
+
+static void lan966x_mac_irq_process(struct lan966x *lan966x, u32 row,
+ struct lan966x_mac_raw_entry *raw_entries)
+{
+ struct lan966x_mac_entry *mac_entry, *tmp;
+ unsigned char mac[ETH_ALEN] __aligned(2);
+ u32 dest_idx;
+ u32 column;
+ u16 vid;
+
+ spin_lock(&lan966x->mac_lock);
+ list_for_each_entry_safe(mac_entry, tmp, &lan966x->mac_entries, list) {
+ bool found = false;
+
+ if (mac_entry->row != row)
+ continue;
+
+ for (column = 0; column < LAN966X_MAC_COLUMNS; ++column) {
+ /* All the valid entries are at the start of the row,
+ * so when get one invalid entry it can just skip the
+ * rest of the columns
+ */
+ if (!ANA_MACACCESS_VALID_GET(raw_entries[column].maca))
+ break;
+
+ lan966x_mac_process_raw_entry(&raw_entries[column],
+ mac, &vid, &dest_idx);
+ WARN_ON(dest_idx > lan966x->num_phys_ports);
+
+ /* If the entry in SW is found, then there is nothing
+ * to do
+ */
+ if (mac_entry->vid == vid &&
+ ether_addr_equal(mac_entry->mac, mac) &&
+ mac_entry->port_index == dest_idx) {
+ raw_entries[column].processed = true;
+ found = true;
+ break;
+ }
+ }
+
+ if (!found) {
+ /* Notify the bridge that the entry doesn't exist
+ * anymore in the HW and remove the entry from the SW
+ * list
+ */
+ lan966x_mac_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE,
+ mac_entry->mac, mac_entry->vid,
+ lan966x->ports[mac_entry->port_index]->dev);
+
+ list_del(&mac_entry->list);
+ kfree(mac_entry);
+ }
+ }
+ spin_unlock(&lan966x->mac_lock);
+
+ /* Now go to the list of columns and see if any entry was not in the SW
+ * list, then that means that the entry is new so it needs to notify the
+ * bridge.
+ */
+ for (column = 0; column < LAN966X_MAC_COLUMNS; ++column) {
+ /* All the valid entries are at the start of the row, so when
+ * get one invalid entry it can just skip the rest of the columns
+ */
+ if (!ANA_MACACCESS_VALID_GET(raw_entries[column].maca))
+ break;
+
+ /* If the entry already exists then don't do anything */
+ if (raw_entries[column].processed)
+ continue;
+
+ lan966x_mac_process_raw_entry(&raw_entries[column],
+ mac, &vid, &dest_idx);
+ WARN_ON(dest_idx > lan966x->num_phys_ports);
+
+ mac_entry = lan966x_mac_alloc_entry(mac, vid, dest_idx);
+ if (!mac_entry)
+ return;
+
+ mac_entry->row = row;
+
+ spin_lock(&lan966x->mac_lock);
+ list_add_tail(&mac_entry->list, &lan966x->mac_entries);
+ spin_unlock(&lan966x->mac_lock);
+
+ lan966x_mac_notifiers(SWITCHDEV_FDB_ADD_TO_BRIDGE,
+ mac, vid, lan966x->ports[dest_idx]->dev);
+ }
+}
+
+irqreturn_t lan966x_mac_irq_handler(struct lan966x *lan966x)
+{
+ struct lan966x_mac_raw_entry entry[LAN966X_MAC_COLUMNS] = { 0 };
+ u32 index, column;
+ bool stop = true;
+ u32 val;
+
+ /* Start the scan from 0, 0 */
+ lan_wr(ANA_MACTINDX_M_INDEX_SET(0) |
+ ANA_MACTINDX_BUCKET_SET(0),
+ lan966x, ANA_MACTINDX);
+
+ while (1) {
+ lan_rmw(ANA_MACACCESS_MAC_TABLE_CMD_SET(MACACCESS_CMD_SYNC_GET_NEXT),
+ ANA_MACACCESS_MAC_TABLE_CMD,
+ lan966x, ANA_MACACCESS);
+ lan966x_mac_wait_for_completion(lan966x);
+
+ val = lan_rd(lan966x, ANA_MACTINDX);
+ index = ANA_MACTINDX_M_INDEX_GET(val);
+ column = ANA_MACTINDX_BUCKET_GET(val);
+
+ /* The SYNC-GET-NEXT returns all the entries(4) in a row in
+ * which is suffered a change. By change it means that new entry
+ * was added or an entry was removed because of ageing.
+ * It would return all the columns for that row. And after that
+ * it would return the next row The stop conditions of the
+ * SYNC-GET-NEXT is when it reaches 'directly' to row 0
+ * column 3. So if SYNC-GET-NEXT returns row 0 and column 0
+ * then it is required to continue to read more even if it
+ * reaches row 0 and column 3.
+ */
+ if (index == 0 && column == 0)
+ stop = false;
+
+ if (column == LAN966X_MAC_COLUMNS - 1 &&
+ index == 0 && stop)
+ break;
+
+ entry[column].mach = lan_rd(lan966x, ANA_MACHDATA);
+ entry[column].macl = lan_rd(lan966x, ANA_MACLDATA);
+ entry[column].maca = lan_rd(lan966x, ANA_MACACCESS);
+
+ /* Once all the columns are read process them */
+ if (column == LAN966X_MAC_COLUMNS - 1) {
+ lan966x_mac_irq_process(lan966x, index, entry);
+ /* A row was processed so it is safe to assume that the
+ * next row/column can be the stop condition
+ */
+ stop = true;
+ }
+ }
+
+ lan_rmw(ANA_ANAINTR_INTR_SET(0),
+ ANA_ANAINTR_INTR,
+ lan966x, ANA_ANAINTR);
+
+ return IRQ_HANDLED;
}
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
index 101c1f005baf..7c6d6293611a 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
@@ -527,6 +527,13 @@ static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args)
return IRQ_HANDLED;
}
+static irqreturn_t lan966x_ana_irq_handler(int irq, void *args)
+{
+ struct lan966x *lan966x = args;
+
+ return lan966x_mac_irq_handler(lan966x);
+}
+
static void lan966x_cleanup_ports(struct lan966x *lan966x)
{
struct lan966x_port *port;
@@ -554,6 +561,11 @@ static void lan966x_cleanup_ports(struct lan966x *lan966x)
disable_irq(lan966x->xtr_irq);
lan966x->xtr_irq = -ENXIO;
+
+ if (lan966x->ana_irq) {
+ disable_irq(lan966x->ana_irq);
+ lan966x->ana_irq = -ENXIO;
+ }
}
static int lan966x_probe_port(struct lan966x *lan966x, u32 p,
@@ -870,6 +882,15 @@ static int lan966x_probe(struct platform_device *pdev)
return -ENODEV;
}
+ lan966x->ana_irq = platform_get_irq_byname(pdev, "ana");
+ if (lan966x->ana_irq) {
+ err = devm_request_threaded_irq(&pdev->dev, lan966x->ana_irq, NULL,
+ lan966x_ana_irq_handler, IRQF_ONESHOT,
+ "ana irq", lan966x);
+ if (err)
+ return dev_err_probe(&pdev->dev, err, "Unable to use ana irq");
+ }
+
/* init switch */
lan966x_init(lan966x);
lan966x_stats_init(lan966x);
@@ -923,6 +944,8 @@ static int lan966x_remove(struct platform_device *pdev)
destroy_workqueue(lan966x->stats_queue);
mutex_destroy(&lan966x->stats_lock);
+ lan966x_mac_purge_entries(lan966x);
+
return 0;
}
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
index 7e5a3b6f168d..ba548d65b58a 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
@@ -75,6 +75,9 @@ struct lan966x {
u8 base_mac[ETH_ALEN];
+ struct list_head mac_entries;
+ spinlock_t mac_lock; /* lock for mac_entries list */
+
/* stats */
const struct lan966x_stat_layout *stats_layout;
u32 num_stats;
@@ -87,6 +90,7 @@ struct lan966x {
/* interrupts */
int xtr_irq;
+ int ana_irq;
};
struct lan966x_port_config {
@@ -141,6 +145,8 @@ int lan966x_mac_forget(struct lan966x *lan966x,
int lan966x_mac_cpu_learn(struct lan966x *lan966x, const char *addr, u16 vid);
int lan966x_mac_cpu_forget(struct lan966x *lan966x, const char *addr, u16 vid);
void lan966x_mac_init(struct lan966x *lan966x);
+void lan966x_mac_purge_entries(struct lan966x *lan966x);
+irqreturn_t lan966x_mac_irq_handler(struct lan966x *lan966x);
static inline void __iomem *lan_addr(void __iomem *base[],
int id, int tinst, int tcnt,
--
2.33.0
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH net-next v7 4/9] net: lan966x: More MAC table functionality
2021-12-17 15:53 [PATCH net-next v7 0/9] net: lan966x: Add switchdev and vlan support Horatiu Vultur
` (2 preceding siblings ...)
2021-12-17 15:53 ` [PATCH net-next v7 3/9] net: lan966x: add support for interrupts from analyzer Horatiu Vultur
@ 2021-12-17 15:53 ` Horatiu Vultur
2021-12-17 15:53 ` [PATCH net-next v7 5/9] net: lan966x: Remove .ndo_change_rx_flags Horatiu Vultur
` (4 subsequent siblings)
8 siblings, 0 replies; 18+ messages in thread
From: Horatiu Vultur @ 2021-12-17 15:53 UTC (permalink / raw)
To: netdev, devicetree, linux-kernel
Cc: davem, kuba, robh+dt, UNGLinuxDriver, linux, f.fainelli,
vivien.didelot, vladimir.oltean, andrew, Horatiu Vultur
This patch adds support for adding/removing mac entries in the SW list
of entries and in the HW table. This is used by the bridge
functionality.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
.../ethernet/microchip/lan966x/lan966x_mac.c | 105 ++++++++++++++++++
.../ethernet/microchip/lan966x/lan966x_main.h | 9 ++
2 files changed, 114 insertions(+)
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c b/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c
index 855ea514f438..efadb8d326cc 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c
@@ -111,6 +111,14 @@ int lan966x_mac_cpu_forget(struct lan966x *lan966x, const char *addr, u16 vid)
return lan966x_mac_forget(lan966x, addr, vid, ENTRYTYPE_LOCKED);
}
+void lan966x_mac_set_ageing(struct lan966x *lan966x,
+ u32 ageing)
+{
+ lan_rmw(ANA_AUTOAGE_AGE_PERIOD_SET(ageing / 2),
+ ANA_AUTOAGE_AGE_PERIOD,
+ lan966x, ANA_AUTOAGE);
+}
+
void lan966x_mac_init(struct lan966x *lan966x)
{
/* Clear the MAC table */
@@ -137,6 +145,48 @@ static struct lan966x_mac_entry *lan966x_mac_alloc_entry(const unsigned char *ma
return mac_entry;
}
+static struct lan966x_mac_entry *lan966x_mac_find_entry(struct lan966x *lan966x,
+ const unsigned char *mac,
+ u16 vid, u16 port_index)
+{
+ struct lan966x_mac_entry *res = NULL;
+ struct lan966x_mac_entry *mac_entry;
+
+ spin_lock(&lan966x->mac_lock);
+ list_for_each_entry(mac_entry, &lan966x->mac_entries, list) {
+ if (mac_entry->vid == vid &&
+ ether_addr_equal(mac, mac_entry->mac) &&
+ mac_entry->port_index == port_index) {
+ res = mac_entry;
+ break;
+ }
+ }
+ spin_unlock(&lan966x->mac_lock);
+
+ return res;
+}
+
+static int lan966x_mac_lookup(struct lan966x *lan966x,
+ const unsigned char mac[ETH_ALEN],
+ unsigned int vid, enum macaccess_entry_type type)
+{
+ int ret;
+
+ lan966x_mac_select(lan966x, mac, vid);
+
+ /* Issue a read command */
+ lan_wr(ANA_MACACCESS_ENTRYTYPE_SET(type) |
+ ANA_MACACCESS_VALID_SET(1) |
+ ANA_MACACCESS_MAC_TABLE_CMD_SET(MACACCESS_CMD_READ),
+ lan966x, ANA_MACACCESS);
+
+ ret = lan966x_mac_wait_for_completion(lan966x);
+ if (ret)
+ return ret;
+
+ return ANA_MACACCESS_VALID_GET(lan_rd(lan966x, ANA_MACACCESS));
+}
+
static void lan966x_fdb_call_notifiers(enum switchdev_notifier_type type,
const char *mac, u16 vid,
struct net_device *dev)
@@ -149,6 +199,61 @@ static void lan966x_fdb_call_notifiers(enum switchdev_notifier_type type,
call_switchdev_notifiers(type, dev, &info.info, NULL);
}
+int lan966x_mac_add_entry(struct lan966x *lan966x, struct lan966x_port *port,
+ const unsigned char *addr, u16 vid)
+{
+ struct lan966x_mac_entry *mac_entry;
+
+ if (lan966x_mac_lookup(lan966x, addr, vid, ENTRYTYPE_NORMAL))
+ return 0;
+
+ /* In case the entry already exists, don't add it again to SW,
+ * just update HW, but we need to look in the actual HW because
+ * it is possible for an entry to be learn by HW and before we
+ * get the interrupt the frame will reach CPU and the CPU will
+ * add the entry but without the extern_learn flag.
+ */
+ mac_entry = lan966x_mac_find_entry(lan966x, addr, vid, port->chip_port);
+ if (mac_entry)
+ return lan966x_mac_learn(lan966x, port->chip_port,
+ addr, vid, ENTRYTYPE_LOCKED);
+
+ mac_entry = lan966x_mac_alloc_entry(addr, vid, port->chip_port);
+ if (!mac_entry)
+ return -ENOMEM;
+
+ spin_lock(&lan966x->mac_lock);
+ list_add_tail(&mac_entry->list, &lan966x->mac_entries);
+ spin_unlock(&lan966x->mac_lock);
+
+ lan966x_mac_learn(lan966x, port->chip_port, addr, vid, ENTRYTYPE_LOCKED);
+ lan966x_fdb_call_notifiers(SWITCHDEV_FDB_OFFLOADED, addr, vid, port->dev);
+
+ return 0;
+}
+
+int lan966x_mac_del_entry(struct lan966x *lan966x, const unsigned char *addr,
+ u16 vid)
+{
+ struct lan966x_mac_entry *mac_entry, *tmp;
+
+ spin_lock(&lan966x->mac_lock);
+ list_for_each_entry_safe(mac_entry, tmp, &lan966x->mac_entries,
+ list) {
+ if (mac_entry->vid == vid &&
+ ether_addr_equal(addr, mac_entry->mac)) {
+ lan966x_mac_forget(lan966x, mac_entry->mac, mac_entry->vid,
+ ENTRYTYPE_LOCKED);
+
+ list_del(&mac_entry->list);
+ kfree(mac_entry);
+ }
+ }
+ spin_unlock(&lan966x->mac_lock);
+
+ return 0;
+}
+
void lan966x_mac_purge_entries(struct lan966x *lan966x)
{
struct lan966x_mac_entry *mac_entry, *tmp;
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
index ba548d65b58a..fcd5d09a070c 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
@@ -145,6 +145,15 @@ int lan966x_mac_forget(struct lan966x *lan966x,
int lan966x_mac_cpu_learn(struct lan966x *lan966x, const char *addr, u16 vid);
int lan966x_mac_cpu_forget(struct lan966x *lan966x, const char *addr, u16 vid);
void lan966x_mac_init(struct lan966x *lan966x);
+void lan966x_mac_set_ageing(struct lan966x *lan966x,
+ u32 ageing);
+int lan966x_mac_del_entry(struct lan966x *lan966x,
+ const unsigned char *addr,
+ u16 vid);
+int lan966x_mac_add_entry(struct lan966x *lan966x,
+ struct lan966x_port *port,
+ const unsigned char *addr,
+ u16 vid);
void lan966x_mac_purge_entries(struct lan966x *lan966x);
irqreturn_t lan966x_mac_irq_handler(struct lan966x *lan966x);
--
2.33.0
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH net-next v7 5/9] net: lan966x: Remove .ndo_change_rx_flags
2021-12-17 15:53 [PATCH net-next v7 0/9] net: lan966x: Add switchdev and vlan support Horatiu Vultur
` (3 preceding siblings ...)
2021-12-17 15:53 ` [PATCH net-next v7 4/9] net: lan966x: More MAC table functionality Horatiu Vultur
@ 2021-12-17 15:53 ` Horatiu Vultur
2021-12-17 15:53 ` [PATCH net-next v7 6/9] net: lan966x: Add support to offload the forwarding Horatiu Vultur
` (3 subsequent siblings)
8 siblings, 0 replies; 18+ messages in thread
From: Horatiu Vultur @ 2021-12-17 15:53 UTC (permalink / raw)
To: netdev, devicetree, linux-kernel
Cc: davem, kuba, robh+dt, UNGLinuxDriver, linux, f.fainelli,
vivien.didelot, vladimir.oltean, andrew, Horatiu Vultur
The function lan966x_port_change_rx_flags() was used only when
IFF_PROMISC flag was set. In that case it was setting to copy all the
frames to the CPU instead of removing any RX filters. Therefore remove
it.
Fixes: d28d6d2e37d10d ("net: lan966x: add port module support")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
.../ethernet/microchip/lan966x/lan966x_main.c | 23 -------------------
1 file changed, 23 deletions(-)
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
index 7c6d6293611a..dc40ac2eb246 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
@@ -298,28 +298,6 @@ static int lan966x_port_xmit(struct sk_buff *skb, struct net_device *dev)
return lan966x_port_ifh_xmit(skb, ifh, dev);
}
-static void lan966x_set_promisc(struct lan966x_port *port, bool enable)
-{
- struct lan966x *lan966x = port->lan966x;
-
- lan_rmw(ANA_CPU_FWD_CFG_SRC_COPY_ENA_SET(enable),
- ANA_CPU_FWD_CFG_SRC_COPY_ENA,
- lan966x, ANA_CPU_FWD_CFG(port->chip_port));
-}
-
-static void lan966x_port_change_rx_flags(struct net_device *dev, int flags)
-{
- struct lan966x_port *port = netdev_priv(dev);
-
- if (!(flags & IFF_PROMISC))
- return;
-
- if (dev->flags & IFF_PROMISC)
- lan966x_set_promisc(port, true);
- else
- lan966x_set_promisc(port, false);
-}
-
static int lan966x_port_change_mtu(struct net_device *dev, int new_mtu)
{
struct lan966x_port *port = netdev_priv(dev);
@@ -369,7 +347,6 @@ static const struct net_device_ops lan966x_port_netdev_ops = {
.ndo_open = lan966x_port_open,
.ndo_stop = lan966x_port_stop,
.ndo_start_xmit = lan966x_port_xmit,
- .ndo_change_rx_flags = lan966x_port_change_rx_flags,
.ndo_change_mtu = lan966x_port_change_mtu,
.ndo_set_rx_mode = lan966x_port_set_rx_mode,
.ndo_get_phys_port_name = lan966x_port_get_phys_port_name,
--
2.33.0
^ permalink raw reply related [flat|nested] 18+ messages in thread* [PATCH net-next v7 6/9] net: lan966x: Add support to offload the forwarding.
2021-12-17 15:53 [PATCH net-next v7 0/9] net: lan966x: Add switchdev and vlan support Horatiu Vultur
` (4 preceding siblings ...)
2021-12-17 15:53 ` [PATCH net-next v7 5/9] net: lan966x: Remove .ndo_change_rx_flags Horatiu Vultur
@ 2021-12-17 15:53 ` Horatiu Vultur
2021-12-17 17:44 ` Vladimir Oltean
2021-12-17 15:53 ` [PATCH net-next v7 7/9] net: lan966x: Add vlan support Horatiu Vultur
` (2 subsequent siblings)
8 siblings, 1 reply; 18+ messages in thread
From: Horatiu Vultur @ 2021-12-17 15:53 UTC (permalink / raw)
To: netdev, devicetree, linux-kernel
Cc: davem, kuba, robh+dt, UNGLinuxDriver, linux, f.fainelli,
vivien.didelot, vladimir.oltean, andrew, Horatiu Vultur
This patch adds basic support to offload in the HW the forwarding of the
frames. The driver registers to the switchdev callbacks and implements
the callbacks for attributes SWITCHDEV_ATTR_ID_PORT_STP_STATE and
SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME.
It is not allowed to add a lan966x port to a bridge that contains a
different interface than lan966x.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
.../net/ethernet/microchip/lan966x/Kconfig | 1 +
.../net/ethernet/microchip/lan966x/Makefile | 2 +-
.../ethernet/microchip/lan966x/lan966x_main.c | 32 +-
.../ethernet/microchip/lan966x/lan966x_main.h | 9 +
.../microchip/lan966x/lan966x_switchdev.c | 309 ++++++++++++++++++
5 files changed, 351 insertions(+), 2 deletions(-)
create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
diff --git a/drivers/net/ethernet/microchip/lan966x/Kconfig b/drivers/net/ethernet/microchip/lan966x/Kconfig
index 2860a8c9923d..ac273f84b69e 100644
--- a/drivers/net/ethernet/microchip/lan966x/Kconfig
+++ b/drivers/net/ethernet/microchip/lan966x/Kconfig
@@ -2,6 +2,7 @@ config LAN966X_SWITCH
tristate "Lan966x switch driver"
depends on HAS_IOMEM
depends on OF
+ depends on NET_SWITCHDEV
select PHYLINK
select PACKING
help
diff --git a/drivers/net/ethernet/microchip/lan966x/Makefile b/drivers/net/ethernet/microchip/lan966x/Makefile
index 2989ba528236..974229c51f55 100644
--- a/drivers/net/ethernet/microchip/lan966x/Makefile
+++ b/drivers/net/ethernet/microchip/lan966x/Makefile
@@ -6,4 +6,4 @@
obj-$(CONFIG_LAN966X_SWITCH) += lan966x-switch.o
lan966x-switch-objs := lan966x_main.o lan966x_phylink.o lan966x_port.o \
- lan966x_mac.o lan966x_ethtool.o
+ lan966x_mac.o lan966x_ethtool.o lan966x_switchdev.o
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
index dc40ac2eb246..5af60234d81d 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
@@ -355,6 +355,11 @@ static const struct net_device_ops lan966x_port_netdev_ops = {
.ndo_get_port_parent_id = lan966x_port_get_parent_id,
};
+bool lan966x_netdevice_check(const struct net_device *dev)
+{
+ return dev->netdev_ops == &lan966x_port_netdev_ops;
+}
+
static int lan966x_port_xtr_status(struct lan966x *lan966x, u8 grp)
{
return lan_rd(lan966x, QS_XTR_RD(grp));
@@ -491,6 +496,9 @@ static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args)
skb->protocol = eth_type_trans(skb, dev);
+ if (lan966x->bridge_mask & BIT(src_port))
+ skb->offload_fwd_mark = 1;
+
netif_rx_ni(skb);
dev->stats.rx_bytes += len;
dev->stats.rx_packets++;
@@ -915,6 +923,7 @@ static int lan966x_remove(struct platform_device *pdev)
{
struct lan966x *lan966x = platform_get_drvdata(pdev);
+ lan966x_unregister_notifier_blocks();
lan966x_cleanup_ports(lan966x);
cancel_delayed_work_sync(&lan966x->stats_work);
@@ -934,7 +943,28 @@ static struct platform_driver lan966x_driver = {
.of_match_table = lan966x_match,
},
};
-module_platform_driver(lan966x_driver);
+
+static int __init lan966x_switch_driver_init(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&lan966x_driver);
+ if (ret)
+ return ret;
+
+ lan966x_register_notifier_blocks();
+
+ return 0;
+}
+
+static void __exit lan966x_switch_driver_exit(void)
+{
+ lan966x_unregister_notifier_blocks();
+ platform_driver_unregister(&lan966x_driver);
+}
+
+module_init(lan966x_switch_driver_init);
+module_exit(lan966x_switch_driver_exit);
MODULE_DESCRIPTION("Microchip LAN966X switch driver");
MODULE_AUTHOR("Horatiu Vultur <horatiu.vultur@microchip.com>");
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
index fcd5d09a070c..4723a904c13e 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
@@ -75,6 +75,10 @@ struct lan966x {
u8 base_mac[ETH_ALEN];
+ struct net_device *bridge;
+ u16 bridge_mask;
+ u16 bridge_fwd_mask;
+
struct list_head mac_entries;
spinlock_t mac_lock; /* lock for mac_entries list */
@@ -122,6 +126,11 @@ extern const struct phylink_mac_ops lan966x_phylink_mac_ops;
extern const struct phylink_pcs_ops lan966x_phylink_pcs_ops;
extern const struct ethtool_ops lan966x_ethtool_ops;
+bool lan966x_netdevice_check(const struct net_device *dev);
+
+void lan966x_register_notifier_blocks(void);
+void lan966x_unregister_notifier_blocks(void);
+
void lan966x_stats_get(struct net_device *dev,
struct rtnl_link_stats64 *stats);
int lan966x_stats_init(struct lan966x *lan966x);
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
new file mode 100644
index 000000000000..9db17b677357
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
@@ -0,0 +1,309 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <linux/if_bridge.h>
+#include <net/switchdev.h>
+
+#include "lan966x_main.h"
+
+static struct notifier_block lan966x_netdevice_nb __read_mostly;
+static struct notifier_block lan966x_switchdev_nb __read_mostly;
+static struct notifier_block lan966x_switchdev_blocking_nb __read_mostly;
+
+static void lan966x_update_fwd_mask(struct lan966x *lan966x)
+{
+ int i;
+
+ for (i = 0; i < lan966x->num_phys_ports; i++) {
+ struct lan966x_port *port = lan966x->ports[i];
+ unsigned long mask = 0;
+
+ if (port && lan966x->bridge_fwd_mask & BIT(i))
+ mask = lan966x->bridge_fwd_mask & ~BIT(i);
+
+ mask |= BIT(CPU_PORT);
+
+ lan_wr(ANA_PGID_PGID_SET(mask),
+ lan966x, ANA_PGID(PGID_SRC + i));
+ }
+}
+
+static void lan966x_port_stp_state_set(struct lan966x_port *port, u8 state)
+{
+ struct lan966x *lan966x = port->lan966x;
+ bool learn_ena = false;
+
+ if (state == BR_STATE_FORWARDING || state == BR_STATE_LEARNING)
+ learn_ena = true;
+
+ if (state == BR_STATE_FORWARDING)
+ lan966x->bridge_fwd_mask |= BIT(port->chip_port);
+ else
+ lan966x->bridge_fwd_mask &= ~BIT(port->chip_port);
+
+ lan_rmw(ANA_PORT_CFG_LEARN_ENA_SET(learn_ena),
+ ANA_PORT_CFG_LEARN_ENA,
+ lan966x, ANA_PORT_CFG(port->chip_port));
+
+ lan966x_update_fwd_mask(lan966x);
+}
+
+static void lan966x_port_ageing_set(struct lan966x_port *port,
+ unsigned long ageing_clock_t)
+{
+ unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
+ u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
+
+ lan966x_mac_set_ageing(port->lan966x, ageing_time);
+}
+
+static int lan966x_port_attr_set(struct net_device *dev, const void *ctx,
+ const struct switchdev_attr *attr,
+ struct netlink_ext_ack *extack)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ int err = 0;
+
+ if (ctx && ctx != port)
+ return 0;
+
+ switch (attr->id) {
+ case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
+ lan966x_port_stp_state_set(port, attr->u.stp_state);
+ break;
+ case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
+ lan966x_port_ageing_set(port, attr->u.ageing_time);
+ break;
+ default:
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ return err;
+}
+
+static int lan966x_port_bridge_join(struct lan966x_port *port,
+ struct net_device *bridge,
+ struct netlink_ext_ack *extack)
+{
+ struct lan966x *lan966x = port->lan966x;
+ struct net_device *dev = port->dev;
+ int err;
+
+ if (!lan966x->bridge_mask) {
+ lan966x->bridge = bridge;
+ } else {
+ if (lan966x->bridge != bridge) {
+ NL_SET_ERR_MSG_MOD(extack, "Not allow to add port to different bridge");
+ return -ENODEV;
+ }
+ }
+
+ err = switchdev_bridge_port_offload(dev, dev, port,
+ &lan966x_switchdev_nb,
+ &lan966x_switchdev_blocking_nb,
+ false, extack);
+ if (err)
+ return err;
+
+ lan966x->bridge_mask |= BIT(port->chip_port);
+
+ return 0;
+}
+
+static void lan966x_port_bridge_leave(struct lan966x_port *port,
+ struct net_device *bridge)
+{
+ struct lan966x *lan966x = port->lan966x;
+
+ lan966x->bridge_mask &= ~BIT(port->chip_port);
+
+ if (!lan966x->bridge_mask)
+ lan966x->bridge = NULL;
+
+ lan966x_mac_cpu_learn(lan966x, port->dev->dev_addr, PORT_PVID);
+}
+
+static int lan966x_port_changeupper(struct net_device *dev,
+ struct netdev_notifier_changeupper_info *info)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ struct netlink_ext_ack *extack;
+ int err = 0;
+
+ extack = netdev_notifier_info_to_extack(&info->info);
+
+ if (netif_is_bridge_master(info->upper_dev)) {
+ if (info->linking)
+ err = lan966x_port_bridge_join(port, info->upper_dev,
+ extack);
+ else
+ lan966x_port_bridge_leave(port, info->upper_dev);
+ }
+
+ return err;
+}
+
+static int lan966x_port_prechangeupper(struct net_device *dev,
+ struct netdev_notifier_changeupper_info *info)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+
+ if (netif_is_bridge_master(info->upper_dev) && !info->linking)
+ switchdev_bridge_port_unoffload(port->dev, port,
+ &lan966x_switchdev_nb,
+ &lan966x_switchdev_blocking_nb);
+
+ return NOTIFY_DONE;
+}
+
+static int lan966x_foreign_bridging_check(struct net_device *bridge,
+ struct netlink_ext_ack *extack)
+{
+ struct lan966x *lan966x = NULL;
+ bool has_foreign = false;
+ struct net_device *dev;
+ struct list_head *iter;
+
+ if (!netif_is_bridge_master(bridge))
+ return 0;
+
+ netdev_for_each_lower_dev(bridge, dev, iter) {
+ if (lan966x_netdevice_check(dev)) {
+ struct lan966x_port *port = netdev_priv(dev);
+
+ if (lan966x) {
+ /* Bridge already has at least one port of a
+ * lan966x switch inside it, check that it's
+ * the same instance of the driver.
+ */
+ if (port->lan966x != lan966x) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Bridging between multiple lan966x switches disallowed");
+ return -EINVAL;
+ }
+ } else {
+ /* This is the first lan966x port inside this
+ * bridge
+ */
+ lan966x = port->lan966x;
+ }
+ } else {
+ has_foreign = true;
+ }
+
+ if (lan966x && has_foreign) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Bridging lan966x ports with foreign interfaces disallowed");
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+static int lan966x_bridge_check(struct net_device *dev,
+ struct netdev_notifier_changeupper_info *info)
+{
+ return lan966x_foreign_bridging_check(info->upper_dev,
+ info->info.extack);
+}
+
+static int lan966x_netdevice_port_event(struct net_device *dev,
+ struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ int err = 0;
+
+ if (!lan966x_netdevice_check(dev)) {
+ if (event == NETDEV_CHANGEUPPER)
+ return lan966x_bridge_check(dev, ptr);
+ return 0;
+ }
+
+ switch (event) {
+ case NETDEV_PRECHANGEUPPER:
+ err = lan966x_port_prechangeupper(dev, ptr);
+ break;
+ case NETDEV_CHANGEUPPER:
+ err = lan966x_bridge_check(dev, ptr);
+ if (err)
+ return err;
+
+ err = lan966x_port_changeupper(dev, ptr);
+ break;
+ }
+
+ return err;
+}
+
+static int lan966x_netdevice_event(struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+ int ret;
+
+ ret = lan966x_netdevice_port_event(dev, nb, event, ptr);
+
+ return notifier_from_errno(ret);
+}
+
+static int lan966x_switchdev_event(struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
+ int err;
+
+ switch (event) {
+ case SWITCHDEV_PORT_ATTR_SET:
+ err = switchdev_handle_port_attr_set(dev, ptr,
+ lan966x_netdevice_check,
+ lan966x_port_attr_set);
+ return notifier_from_errno(err);
+ }
+
+ return NOTIFY_DONE;
+}
+
+static int lan966x_switchdev_blocking_event(struct notifier_block *nb,
+ unsigned long event,
+ void *ptr)
+{
+ struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
+ int err;
+
+ switch (event) {
+ case SWITCHDEV_PORT_ATTR_SET:
+ err = switchdev_handle_port_attr_set(dev, ptr,
+ lan966x_netdevice_check,
+ lan966x_port_attr_set);
+ return notifier_from_errno(err);
+ }
+
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block lan966x_netdevice_nb __read_mostly = {
+ .notifier_call = lan966x_netdevice_event,
+};
+
+static struct notifier_block lan966x_switchdev_nb __read_mostly = {
+ .notifier_call = lan966x_switchdev_event,
+};
+
+static struct notifier_block lan966x_switchdev_blocking_nb __read_mostly = {
+ .notifier_call = lan966x_switchdev_blocking_event,
+};
+
+void lan966x_register_notifier_blocks(void)
+{
+ register_netdevice_notifier(&lan966x_netdevice_nb);
+ register_switchdev_notifier(&lan966x_switchdev_nb);
+ register_switchdev_blocking_notifier(&lan966x_switchdev_blocking_nb);
+}
+
+void lan966x_unregister_notifier_blocks(void)
+{
+ unregister_switchdev_blocking_notifier(&lan966x_switchdev_blocking_nb);
+ unregister_switchdev_notifier(&lan966x_switchdev_nb);
+ unregister_netdevice_notifier(&lan966x_netdevice_nb);
+}
--
2.33.0
^ permalink raw reply related [flat|nested] 18+ messages in thread* Re: [PATCH net-next v7 6/9] net: lan966x: Add support to offload the forwarding.
2021-12-17 15:53 ` [PATCH net-next v7 6/9] net: lan966x: Add support to offload the forwarding Horatiu Vultur
@ 2021-12-17 17:44 ` Vladimir Oltean
2021-12-18 12:56 ` Horatiu Vultur
0 siblings, 1 reply; 18+ messages in thread
From: Vladimir Oltean @ 2021-12-17 17:44 UTC (permalink / raw)
To: Horatiu Vultur
Cc: netdev, devicetree, linux-kernel, davem, kuba, robh+dt,
UNGLinuxDriver, linux, f.fainelli, vivien.didelot, andrew
On Fri, Dec 17, 2021 at 04:53:50PM +0100, Horatiu Vultur wrote:
> This patch adds basic support to offload in the HW the forwarding of the
> frames. The driver registers to the switchdev callbacks and implements
> the callbacks for attributes SWITCHDEV_ATTR_ID_PORT_STP_STATE and
> SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME.
> It is not allowed to add a lan966x port to a bridge that contains a
> different interface than lan966x.
>
> Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
> ---
> .../net/ethernet/microchip/lan966x/Kconfig | 1 +
> .../net/ethernet/microchip/lan966x/Makefile | 2 +-
> .../ethernet/microchip/lan966x/lan966x_main.c | 32 +-
> .../ethernet/microchip/lan966x/lan966x_main.h | 9 +
> .../microchip/lan966x/lan966x_switchdev.c | 309 ++++++++++++++++++
> 5 files changed, 351 insertions(+), 2 deletions(-)
> create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
>
> diff --git a/drivers/net/ethernet/microchip/lan966x/Kconfig b/drivers/net/ethernet/microchip/lan966x/Kconfig
> index 2860a8c9923d..ac273f84b69e 100644
> --- a/drivers/net/ethernet/microchip/lan966x/Kconfig
> +++ b/drivers/net/ethernet/microchip/lan966x/Kconfig
> @@ -2,6 +2,7 @@ config LAN966X_SWITCH
> tristate "Lan966x switch driver"
> depends on HAS_IOMEM
> depends on OF
> + depends on NET_SWITCHDEV
> select PHYLINK
> select PACKING
> help
> diff --git a/drivers/net/ethernet/microchip/lan966x/Makefile b/drivers/net/ethernet/microchip/lan966x/Makefile
> index 2989ba528236..974229c51f55 100644
> --- a/drivers/net/ethernet/microchip/lan966x/Makefile
> +++ b/drivers/net/ethernet/microchip/lan966x/Makefile
> @@ -6,4 +6,4 @@
> obj-$(CONFIG_LAN966X_SWITCH) += lan966x-switch.o
>
> lan966x-switch-objs := lan966x_main.o lan966x_phylink.o lan966x_port.o \
> - lan966x_mac.o lan966x_ethtool.o
> + lan966x_mac.o lan966x_ethtool.o lan966x_switchdev.o
> diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
> index dc40ac2eb246..5af60234d81d 100644
> --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
> +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
> @@ -355,6 +355,11 @@ static const struct net_device_ops lan966x_port_netdev_ops = {
> .ndo_get_port_parent_id = lan966x_port_get_parent_id,
> };
>
> +bool lan966x_netdevice_check(const struct net_device *dev)
> +{
> + return dev->netdev_ops == &lan966x_port_netdev_ops;
> +}
> +
> static int lan966x_port_xtr_status(struct lan966x *lan966x, u8 grp)
> {
> return lan_rd(lan966x, QS_XTR_RD(grp));
> @@ -491,6 +496,9 @@ static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args)
>
> skb->protocol = eth_type_trans(skb, dev);
>
> + if (lan966x->bridge_mask & BIT(src_port))
> + skb->offload_fwd_mark = 1;
> +
> netif_rx_ni(skb);
> dev->stats.rx_bytes += len;
> dev->stats.rx_packets++;
> @@ -915,6 +923,7 @@ static int lan966x_remove(struct platform_device *pdev)
> {
> struct lan966x *lan966x = platform_get_drvdata(pdev);
>
> + lan966x_unregister_notifier_blocks();
You forgot to delete this from lan966x_remove.
> lan966x_cleanup_ports(lan966x);
>
> cancel_delayed_work_sync(&lan966x->stats_work);
> @@ -934,7 +943,28 @@ static struct platform_driver lan966x_driver = {
> .of_match_table = lan966x_match,
> },
> };
> -module_platform_driver(lan966x_driver);
> +
> +static int __init lan966x_switch_driver_init(void)
> +{
> + int ret;
> +
> + ret = platform_driver_register(&lan966x_driver);
> + if (ret)
> + return ret;
> +
> + lan966x_register_notifier_blocks();
I think you might miss some events if you register the notifier blocks
after you've registered your net devices, so could you move this to be
first (and reverse the order for the driver exit, too)?
> +
> + return 0;
> +}
> +
> +static void __exit lan966x_switch_driver_exit(void)
> +{
> + lan966x_unregister_notifier_blocks();
> + platform_driver_unregister(&lan966x_driver);
> +}
> +
> +module_init(lan966x_switch_driver_init);
> +module_exit(lan966x_switch_driver_exit);
>
> MODULE_DESCRIPTION("Microchip LAN966X switch driver");
> MODULE_AUTHOR("Horatiu Vultur <horatiu.vultur@microchip.com>");
> diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
> index fcd5d09a070c..4723a904c13e 100644
> --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
> +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
> @@ -75,6 +75,10 @@ struct lan966x {
>
> u8 base_mac[ETH_ALEN];
>
> + struct net_device *bridge;
> + u16 bridge_mask;
> + u16 bridge_fwd_mask;
> +
> struct list_head mac_entries;
> spinlock_t mac_lock; /* lock for mac_entries list */
>
> @@ -122,6 +126,11 @@ extern const struct phylink_mac_ops lan966x_phylink_mac_ops;
> extern const struct phylink_pcs_ops lan966x_phylink_pcs_ops;
> extern const struct ethtool_ops lan966x_ethtool_ops;
>
> +bool lan966x_netdevice_check(const struct net_device *dev);
> +
> +void lan966x_register_notifier_blocks(void);
> +void lan966x_unregister_notifier_blocks(void);
> +
> void lan966x_stats_get(struct net_device *dev,
> struct rtnl_link_stats64 *stats);
> int lan966x_stats_init(struct lan966x *lan966x);
> diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
> new file mode 100644
> index 000000000000..9db17b677357
> --- /dev/null
> +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
> @@ -0,0 +1,309 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +
> +#include <linux/if_bridge.h>
> +#include <net/switchdev.h>
> +
> +#include "lan966x_main.h"
> +
> +static struct notifier_block lan966x_netdevice_nb __read_mostly;
> +static struct notifier_block lan966x_switchdev_nb __read_mostly;
> +static struct notifier_block lan966x_switchdev_blocking_nb __read_mostly;
> +
> +static void lan966x_update_fwd_mask(struct lan966x *lan966x)
> +{
> + int i;
> +
> + for (i = 0; i < lan966x->num_phys_ports; i++) {
> + struct lan966x_port *port = lan966x->ports[i];
> + unsigned long mask = 0;
> +
> + if (port && lan966x->bridge_fwd_mask & BIT(i))
> + mask = lan966x->bridge_fwd_mask & ~BIT(i);
> +
> + mask |= BIT(CPU_PORT);
> +
> + lan_wr(ANA_PGID_PGID_SET(mask),
> + lan966x, ANA_PGID(PGID_SRC + i));
> + }
> +}
> +
> +static void lan966x_port_stp_state_set(struct lan966x_port *port, u8 state)
> +{
> + struct lan966x *lan966x = port->lan966x;
> + bool learn_ena = false;
> +
> + if (state == BR_STATE_FORWARDING || state == BR_STATE_LEARNING)
> + learn_ena = true;
> +
> + if (state == BR_STATE_FORWARDING)
> + lan966x->bridge_fwd_mask |= BIT(port->chip_port);
> + else
> + lan966x->bridge_fwd_mask &= ~BIT(port->chip_port);
> +
> + lan_rmw(ANA_PORT_CFG_LEARN_ENA_SET(learn_ena),
> + ANA_PORT_CFG_LEARN_ENA,
> + lan966x, ANA_PORT_CFG(port->chip_port));
> +
> + lan966x_update_fwd_mask(lan966x);
> +}
> +
> +static void lan966x_port_ageing_set(struct lan966x_port *port,
> + unsigned long ageing_clock_t)
> +{
> + unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
> + u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
> +
> + lan966x_mac_set_ageing(port->lan966x, ageing_time);
> +}
> +
> +static int lan966x_port_attr_set(struct net_device *dev, const void *ctx,
> + const struct switchdev_attr *attr,
> + struct netlink_ext_ack *extack)
> +{
> + struct lan966x_port *port = netdev_priv(dev);
> + int err = 0;
> +
> + if (ctx && ctx != port)
> + return 0;
> +
> + switch (attr->id) {
> + case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
> + lan966x_port_stp_state_set(port, attr->u.stp_state);
> + break;
> + case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
> + lan966x_port_ageing_set(port, attr->u.ageing_time);
> + break;
> + default:
> + err = -EOPNOTSUPP;
> + break;
> + }
> +
> + return err;
> +}
> +
> +static int lan966x_port_bridge_join(struct lan966x_port *port,
> + struct net_device *bridge,
> + struct netlink_ext_ack *extack)
> +{
> + struct lan966x *lan966x = port->lan966x;
> + struct net_device *dev = port->dev;
> + int err;
> +
> + if (!lan966x->bridge_mask) {
> + lan966x->bridge = bridge;
> + } else {
> + if (lan966x->bridge != bridge) {
> + NL_SET_ERR_MSG_MOD(extack, "Not allow to add port to different bridge");
> + return -ENODEV;
> + }
> + }
> +
> + err = switchdev_bridge_port_offload(dev, dev, port,
> + &lan966x_switchdev_nb,
> + &lan966x_switchdev_blocking_nb,
> + false, extack);
> + if (err)
> + return err;
> +
> + lan966x->bridge_mask |= BIT(port->chip_port);
> +
> + return 0;
> +}
> +
> +static void lan966x_port_bridge_leave(struct lan966x_port *port,
> + struct net_device *bridge)
> +{
> + struct lan966x *lan966x = port->lan966x;
> +
> + lan966x->bridge_mask &= ~BIT(port->chip_port);
> +
> + if (!lan966x->bridge_mask)
> + lan966x->bridge = NULL;
> +
> + lan966x_mac_cpu_learn(lan966x, port->dev->dev_addr, PORT_PVID);
> +}
> +
> +static int lan966x_port_changeupper(struct net_device *dev,
> + struct netdev_notifier_changeupper_info *info)
> +{
> + struct lan966x_port *port = netdev_priv(dev);
> + struct netlink_ext_ack *extack;
> + int err = 0;
> +
> + extack = netdev_notifier_info_to_extack(&info->info);
> +
> + if (netif_is_bridge_master(info->upper_dev)) {
> + if (info->linking)
> + err = lan966x_port_bridge_join(port, info->upper_dev,
> + extack);
> + else
> + lan966x_port_bridge_leave(port, info->upper_dev);
> + }
> +
> + return err;
> +}
> +
> +static int lan966x_port_prechangeupper(struct net_device *dev,
> + struct netdev_notifier_changeupper_info *info)
> +{
> + struct lan966x_port *port = netdev_priv(dev);
> +
> + if (netif_is_bridge_master(info->upper_dev) && !info->linking)
> + switchdev_bridge_port_unoffload(port->dev, port,
> + &lan966x_switchdev_nb,
> + &lan966x_switchdev_blocking_nb);
> +
> + return NOTIFY_DONE;
> +}
> +
> +static int lan966x_foreign_bridging_check(struct net_device *bridge,
> + struct netlink_ext_ack *extack)
> +{
> + struct lan966x *lan966x = NULL;
> + bool has_foreign = false;
> + struct net_device *dev;
> + struct list_head *iter;
> +
> + if (!netif_is_bridge_master(bridge))
> + return 0;
> +
> + netdev_for_each_lower_dev(bridge, dev, iter) {
> + if (lan966x_netdevice_check(dev)) {
> + struct lan966x_port *port = netdev_priv(dev);
> +
> + if (lan966x) {
> + /* Bridge already has at least one port of a
> + * lan966x switch inside it, check that it's
> + * the same instance of the driver.
> + */
> + if (port->lan966x != lan966x) {
> + NL_SET_ERR_MSG_MOD(extack,
> + "Bridging between multiple lan966x switches disallowed");
> + return -EINVAL;
> + }
> + } else {
> + /* This is the first lan966x port inside this
> + * bridge
> + */
> + lan966x = port->lan966x;
> + }
> + } else {
> + has_foreign = true;
> + }
> +
> + if (lan966x && has_foreign) {
> + NL_SET_ERR_MSG_MOD(extack,
> + "Bridging lan966x ports with foreign interfaces disallowed");
> + return -EINVAL;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int lan966x_bridge_check(struct net_device *dev,
> + struct netdev_notifier_changeupper_info *info)
> +{
> + return lan966x_foreign_bridging_check(info->upper_dev,
> + info->info.extack);
> +}
> +
> +static int lan966x_netdevice_port_event(struct net_device *dev,
> + struct notifier_block *nb,
> + unsigned long event, void *ptr)
> +{
> + int err = 0;
> +
> + if (!lan966x_netdevice_check(dev)) {
> + if (event == NETDEV_CHANGEUPPER)
> + return lan966x_bridge_check(dev, ptr);
> + return 0;
> + }
> +
> + switch (event) {
> + case NETDEV_PRECHANGEUPPER:
> + err = lan966x_port_prechangeupper(dev, ptr);
> + break;
> + case NETDEV_CHANGEUPPER:
> + err = lan966x_bridge_check(dev, ptr);
> + if (err)
> + return err;
> +
> + err = lan966x_port_changeupper(dev, ptr);
> + break;
> + }
> +
> + return err;
> +}
> +
> +static int lan966x_netdevice_event(struct notifier_block *nb,
> + unsigned long event, void *ptr)
> +{
> + struct net_device *dev = netdev_notifier_info_to_dev(ptr);
> + int ret;
> +
> + ret = lan966x_netdevice_port_event(dev, nb, event, ptr);
> +
> + return notifier_from_errno(ret);
> +}
> +
> +static int lan966x_switchdev_event(struct notifier_block *nb,
> + unsigned long event, void *ptr)
> +{
> + struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
> + int err;
> +
> + switch (event) {
> + case SWITCHDEV_PORT_ATTR_SET:
> + err = switchdev_handle_port_attr_set(dev, ptr,
> + lan966x_netdevice_check,
> + lan966x_port_attr_set);
> + return notifier_from_errno(err);
> + }
> +
> + return NOTIFY_DONE;
> +}
> +
> +static int lan966x_switchdev_blocking_event(struct notifier_block *nb,
> + unsigned long event,
> + void *ptr)
> +{
> + struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
> + int err;
> +
> + switch (event) {
> + case SWITCHDEV_PORT_ATTR_SET:
> + err = switchdev_handle_port_attr_set(dev, ptr,
> + lan966x_netdevice_check,
> + lan966x_port_attr_set);
> + return notifier_from_errno(err);
> + }
> +
> + return NOTIFY_DONE;
> +}
> +
> +static struct notifier_block lan966x_netdevice_nb __read_mostly = {
> + .notifier_call = lan966x_netdevice_event,
> +};
> +
> +static struct notifier_block lan966x_switchdev_nb __read_mostly = {
> + .notifier_call = lan966x_switchdev_event,
> +};
> +
> +static struct notifier_block lan966x_switchdev_blocking_nb __read_mostly = {
> + .notifier_call = lan966x_switchdev_blocking_event,
> +};
> +
> +void lan966x_register_notifier_blocks(void)
> +{
> + register_netdevice_notifier(&lan966x_netdevice_nb);
> + register_switchdev_notifier(&lan966x_switchdev_nb);
> + register_switchdev_blocking_notifier(&lan966x_switchdev_blocking_nb);
> +}
> +
> +void lan966x_unregister_notifier_blocks(void)
> +{
> + unregister_switchdev_blocking_notifier(&lan966x_switchdev_blocking_nb);
> + unregister_switchdev_notifier(&lan966x_switchdev_nb);
> + unregister_netdevice_notifier(&lan966x_netdevice_nb);
> +}
> --
> 2.33.0
>
^ permalink raw reply [flat|nested] 18+ messages in thread* Re: [PATCH net-next v7 6/9] net: lan966x: Add support to offload the forwarding.
2021-12-17 17:44 ` Vladimir Oltean
@ 2021-12-18 12:56 ` Horatiu Vultur
0 siblings, 0 replies; 18+ messages in thread
From: Horatiu Vultur @ 2021-12-18 12:56 UTC (permalink / raw)
To: Vladimir Oltean
Cc: netdev, devicetree, linux-kernel, davem, kuba, robh+dt,
UNGLinuxDriver, linux, f.fainelli, vivien.didelot, andrew
The 12/17/2021 17:44, Vladimir Oltean wrote:
>
> On Fri, Dec 17, 2021 at 04:53:50PM +0100, Horatiu Vultur wrote:
> > This patch adds basic support to offload in the HW the forwarding of the
> > frames. The driver registers to the switchdev callbacks and implements
> > the callbacks for attributes SWITCHDEV_ATTR_ID_PORT_STP_STATE and
> > SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME.
> > It is not allowed to add a lan966x port to a bridge that contains a
> > different interface than lan966x.
> >
> > Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
> > ---
> > .../net/ethernet/microchip/lan966x/Kconfig | 1 +
> > .../net/ethernet/microchip/lan966x/Makefile | 2 +-
> > .../ethernet/microchip/lan966x/lan966x_main.c | 32 +-
> > .../ethernet/microchip/lan966x/lan966x_main.h | 9 +
> > .../microchip/lan966x/lan966x_switchdev.c | 309 ++++++++++++++++++
> > 5 files changed, 351 insertions(+), 2 deletions(-)
> > create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
> >
> > diff --git a/drivers/net/ethernet/microchip/lan966x/Kconfig b/drivers/net/ethernet/microchip/lan966x/Kconfig
> > index 2860a8c9923d..ac273f84b69e 100644
> > --- a/drivers/net/ethernet/microchip/lan966x/Kconfig
> > +++ b/drivers/net/ethernet/microchip/lan966x/Kconfig
> > @@ -2,6 +2,7 @@ config LAN966X_SWITCH
> > tristate "Lan966x switch driver"
> > depends on HAS_IOMEM
> > depends on OF
> > + depends on NET_SWITCHDEV
> > select PHYLINK
> > select PACKING
> > help
> > diff --git a/drivers/net/ethernet/microchip/lan966x/Makefile b/drivers/net/ethernet/microchip/lan966x/Makefile
> > index 2989ba528236..974229c51f55 100644
> > --- a/drivers/net/ethernet/microchip/lan966x/Makefile
> > +++ b/drivers/net/ethernet/microchip/lan966x/Makefile
> > @@ -6,4 +6,4 @@
> > obj-$(CONFIG_LAN966X_SWITCH) += lan966x-switch.o
> >
> > lan966x-switch-objs := lan966x_main.o lan966x_phylink.o lan966x_port.o \
> > - lan966x_mac.o lan966x_ethtool.o
> > + lan966x_mac.o lan966x_ethtool.o lan966x_switchdev.o
> > diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
> > index dc40ac2eb246..5af60234d81d 100644
> > --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
> > +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
> > @@ -355,6 +355,11 @@ static const struct net_device_ops lan966x_port_netdev_ops = {
> > .ndo_get_port_parent_id = lan966x_port_get_parent_id,
> > };
> >
> > +bool lan966x_netdevice_check(const struct net_device *dev)
> > +{
> > + return dev->netdev_ops == &lan966x_port_netdev_ops;
> > +}
> > +
> > static int lan966x_port_xtr_status(struct lan966x *lan966x, u8 grp)
> > {
> > return lan_rd(lan966x, QS_XTR_RD(grp));
> > @@ -491,6 +496,9 @@ static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args)
> >
> > skb->protocol = eth_type_trans(skb, dev);
> >
> > + if (lan966x->bridge_mask & BIT(src_port))
> > + skb->offload_fwd_mark = 1;
> > +
> > netif_rx_ni(skb);
> > dev->stats.rx_bytes += len;
> > dev->stats.rx_packets++;
> > @@ -915,6 +923,7 @@ static int lan966x_remove(struct platform_device *pdev)
> > {
> > struct lan966x *lan966x = platform_get_drvdata(pdev);
> >
> > + lan966x_unregister_notifier_blocks();
>
> You forgot to delete this from lan966x_remove.
Good catch, I will remove this.
>
> > lan966x_cleanup_ports(lan966x);
> >
> > cancel_delayed_work_sync(&lan966x->stats_work);
> > @@ -934,7 +943,28 @@ static struct platform_driver lan966x_driver = {
> > .of_match_table = lan966x_match,
> > },
> > };
> > -module_platform_driver(lan966x_driver);
> > +
> > +static int __init lan966x_switch_driver_init(void)
> > +{
> > + int ret;
> > +
> > + ret = platform_driver_register(&lan966x_driver);
> > + if (ret)
> > + return ret;
> > +
> > + lan966x_register_notifier_blocks();
>
> I think you might miss some events if you register the notifier blocks
> after you've registered your net devices, so could you move this to be
> first (and reverse the order for the driver exit, too)?
Yes, I will do that.
>
> > +
> > + return 0;
> > +}
> > +
> > +static void __exit lan966x_switch_driver_exit(void)
> > +{
> > + lan966x_unregister_notifier_blocks();
> > + platform_driver_unregister(&lan966x_driver);
> > +}
> > +
> > +module_init(lan966x_switch_driver_init);
> > +module_exit(lan966x_switch_driver_exit);
> >
> > MODULE_DESCRIPTION("Microchip LAN966X switch driver");
> > MODULE_AUTHOR("Horatiu Vultur <horatiu.vultur@microchip.com>");
> > diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
> > index fcd5d09a070c..4723a904c13e 100644
> > --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
> > +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
> > @@ -75,6 +75,10 @@ struct lan966x {
> >
> > u8 base_mac[ETH_ALEN];
> >
> > + struct net_device *bridge;
> > + u16 bridge_mask;
> > + u16 bridge_fwd_mask;
> > +
> > struct list_head mac_entries;
> > spinlock_t mac_lock; /* lock for mac_entries list */
> >
> > @@ -122,6 +126,11 @@ extern const struct phylink_mac_ops lan966x_phylink_mac_ops;
> > extern const struct phylink_pcs_ops lan966x_phylink_pcs_ops;
> > extern const struct ethtool_ops lan966x_ethtool_ops;
> >
> > +bool lan966x_netdevice_check(const struct net_device *dev);
> > +
> > +void lan966x_register_notifier_blocks(void);
> > +void lan966x_unregister_notifier_blocks(void);
> > +
> > void lan966x_stats_get(struct net_device *dev,
> > struct rtnl_link_stats64 *stats);
> > int lan966x_stats_init(struct lan966x *lan966x);
> > diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
> > new file mode 100644
> > index 000000000000..9db17b677357
> > --- /dev/null
> > +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
> > @@ -0,0 +1,309 @@
> > +// SPDX-License-Identifier: GPL-2.0+
> > +
> > +#include <linux/if_bridge.h>
> > +#include <net/switchdev.h>
> > +
> > +#include "lan966x_main.h"
> > +
> > +static struct notifier_block lan966x_netdevice_nb __read_mostly;
> > +static struct notifier_block lan966x_switchdev_nb __read_mostly;
> > +static struct notifier_block lan966x_switchdev_blocking_nb __read_mostly;
> > +
> > +static void lan966x_update_fwd_mask(struct lan966x *lan966x)
> > +{
> > + int i;
> > +
> > + for (i = 0; i < lan966x->num_phys_ports; i++) {
> > + struct lan966x_port *port = lan966x->ports[i];
> > + unsigned long mask = 0;
> > +
> > + if (port && lan966x->bridge_fwd_mask & BIT(i))
> > + mask = lan966x->bridge_fwd_mask & ~BIT(i);
> > +
> > + mask |= BIT(CPU_PORT);
> > +
> > + lan_wr(ANA_PGID_PGID_SET(mask),
> > + lan966x, ANA_PGID(PGID_SRC + i));
> > + }
> > +}
> > +
> > +static void lan966x_port_stp_state_set(struct lan966x_port *port, u8 state)
> > +{
> > + struct lan966x *lan966x = port->lan966x;
> > + bool learn_ena = false;
> > +
> > + if (state == BR_STATE_FORWARDING || state == BR_STATE_LEARNING)
> > + learn_ena = true;
> > +
> > + if (state == BR_STATE_FORWARDING)
> > + lan966x->bridge_fwd_mask |= BIT(port->chip_port);
> > + else
> > + lan966x->bridge_fwd_mask &= ~BIT(port->chip_port);
> > +
> > + lan_rmw(ANA_PORT_CFG_LEARN_ENA_SET(learn_ena),
> > + ANA_PORT_CFG_LEARN_ENA,
> > + lan966x, ANA_PORT_CFG(port->chip_port));
> > +
> > + lan966x_update_fwd_mask(lan966x);
> > +}
> > +
> > +static void lan966x_port_ageing_set(struct lan966x_port *port,
> > + unsigned long ageing_clock_t)
> > +{
> > + unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
> > + u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
> > +
> > + lan966x_mac_set_ageing(port->lan966x, ageing_time);
> > +}
> > +
> > +static int lan966x_port_attr_set(struct net_device *dev, const void *ctx,
> > + const struct switchdev_attr *attr,
> > + struct netlink_ext_ack *extack)
> > +{
> > + struct lan966x_port *port = netdev_priv(dev);
> > + int err = 0;
> > +
> > + if (ctx && ctx != port)
> > + return 0;
> > +
> > + switch (attr->id) {
> > + case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
> > + lan966x_port_stp_state_set(port, attr->u.stp_state);
> > + break;
> > + case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
> > + lan966x_port_ageing_set(port, attr->u.ageing_time);
> > + break;
> > + default:
> > + err = -EOPNOTSUPP;
> > + break;
> > + }
> > +
> > + return err;
> > +}
> > +
> > +static int lan966x_port_bridge_join(struct lan966x_port *port,
> > + struct net_device *bridge,
> > + struct netlink_ext_ack *extack)
> > +{
> > + struct lan966x *lan966x = port->lan966x;
> > + struct net_device *dev = port->dev;
> > + int err;
> > +
> > + if (!lan966x->bridge_mask) {
> > + lan966x->bridge = bridge;
> > + } else {
> > + if (lan966x->bridge != bridge) {
> > + NL_SET_ERR_MSG_MOD(extack, "Not allow to add port to different bridge");
> > + return -ENODEV;
> > + }
> > + }
> > +
> > + err = switchdev_bridge_port_offload(dev, dev, port,
> > + &lan966x_switchdev_nb,
> > + &lan966x_switchdev_blocking_nb,
> > + false, extack);
> > + if (err)
> > + return err;
> > +
> > + lan966x->bridge_mask |= BIT(port->chip_port);
> > +
> > + return 0;
> > +}
> > +
> > +static void lan966x_port_bridge_leave(struct lan966x_port *port,
> > + struct net_device *bridge)
> > +{
> > + struct lan966x *lan966x = port->lan966x;
> > +
> > + lan966x->bridge_mask &= ~BIT(port->chip_port);
> > +
> > + if (!lan966x->bridge_mask)
> > + lan966x->bridge = NULL;
> > +
> > + lan966x_mac_cpu_learn(lan966x, port->dev->dev_addr, PORT_PVID);
> > +}
> > +
> > +static int lan966x_port_changeupper(struct net_device *dev,
> > + struct netdev_notifier_changeupper_info *info)
> > +{
> > + struct lan966x_port *port = netdev_priv(dev);
> > + struct netlink_ext_ack *extack;
> > + int err = 0;
> > +
> > + extack = netdev_notifier_info_to_extack(&info->info);
> > +
> > + if (netif_is_bridge_master(info->upper_dev)) {
> > + if (info->linking)
> > + err = lan966x_port_bridge_join(port, info->upper_dev,
> > + extack);
> > + else
> > + lan966x_port_bridge_leave(port, info->upper_dev);
> > + }
> > +
> > + return err;
> > +}
> > +
> > +static int lan966x_port_prechangeupper(struct net_device *dev,
> > + struct netdev_notifier_changeupper_info *info)
> > +{
> > + struct lan966x_port *port = netdev_priv(dev);
> > +
> > + if (netif_is_bridge_master(info->upper_dev) && !info->linking)
> > + switchdev_bridge_port_unoffload(port->dev, port,
> > + &lan966x_switchdev_nb,
> > + &lan966x_switchdev_blocking_nb);
> > +
> > + return NOTIFY_DONE;
> > +}
> > +
> > +static int lan966x_foreign_bridging_check(struct net_device *bridge,
> > + struct netlink_ext_ack *extack)
> > +{
> > + struct lan966x *lan966x = NULL;
> > + bool has_foreign = false;
> > + struct net_device *dev;
> > + struct list_head *iter;
> > +
> > + if (!netif_is_bridge_master(bridge))
> > + return 0;
> > +
> > + netdev_for_each_lower_dev(bridge, dev, iter) {
> > + if (lan966x_netdevice_check(dev)) {
> > + struct lan966x_port *port = netdev_priv(dev);
> > +
> > + if (lan966x) {
> > + /* Bridge already has at least one port of a
> > + * lan966x switch inside it, check that it's
> > + * the same instance of the driver.
> > + */
> > + if (port->lan966x != lan966x) {
> > + NL_SET_ERR_MSG_MOD(extack,
> > + "Bridging between multiple lan966x switches disallowed");
> > + return -EINVAL;
> > + }
> > + } else {
> > + /* This is the first lan966x port inside this
> > + * bridge
> > + */
> > + lan966x = port->lan966x;
> > + }
> > + } else {
> > + has_foreign = true;
> > + }
> > +
> > + if (lan966x && has_foreign) {
> > + NL_SET_ERR_MSG_MOD(extack,
> > + "Bridging lan966x ports with foreign interfaces disallowed");
> > + return -EINVAL;
> > + }
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +static int lan966x_bridge_check(struct net_device *dev,
> > + struct netdev_notifier_changeupper_info *info)
> > +{
> > + return lan966x_foreign_bridging_check(info->upper_dev,
> > + info->info.extack);
> > +}
> > +
> > +static int lan966x_netdevice_port_event(struct net_device *dev,
> > + struct notifier_block *nb,
> > + unsigned long event, void *ptr)
> > +{
> > + int err = 0;
> > +
> > + if (!lan966x_netdevice_check(dev)) {
> > + if (event == NETDEV_CHANGEUPPER)
> > + return lan966x_bridge_check(dev, ptr);
> > + return 0;
> > + }
> > +
> > + switch (event) {
> > + case NETDEV_PRECHANGEUPPER:
> > + err = lan966x_port_prechangeupper(dev, ptr);
> > + break;
> > + case NETDEV_CHANGEUPPER:
> > + err = lan966x_bridge_check(dev, ptr);
> > + if (err)
> > + return err;
> > +
> > + err = lan966x_port_changeupper(dev, ptr);
> > + break;
> > + }
> > +
> > + return err;
> > +}
> > +
> > +static int lan966x_netdevice_event(struct notifier_block *nb,
> > + unsigned long event, void *ptr)
> > +{
> > + struct net_device *dev = netdev_notifier_info_to_dev(ptr);
> > + int ret;
> > +
> > + ret = lan966x_netdevice_port_event(dev, nb, event, ptr);
> > +
> > + return notifier_from_errno(ret);
> > +}
> > +
> > +static int lan966x_switchdev_event(struct notifier_block *nb,
> > + unsigned long event, void *ptr)
> > +{
> > + struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
> > + int err;
> > +
> > + switch (event) {
> > + case SWITCHDEV_PORT_ATTR_SET:
> > + err = switchdev_handle_port_attr_set(dev, ptr,
> > + lan966x_netdevice_check,
> > + lan966x_port_attr_set);
> > + return notifier_from_errno(err);
> > + }
> > +
> > + return NOTIFY_DONE;
> > +}
> > +
> > +static int lan966x_switchdev_blocking_event(struct notifier_block *nb,
> > + unsigned long event,
> > + void *ptr)
> > +{
> > + struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
> > + int err;
> > +
> > + switch (event) {
> > + case SWITCHDEV_PORT_ATTR_SET:
> > + err = switchdev_handle_port_attr_set(dev, ptr,
> > + lan966x_netdevice_check,
> > + lan966x_port_attr_set);
> > + return notifier_from_errno(err);
> > + }
> > +
> > + return NOTIFY_DONE;
> > +}
> > +
> > +static struct notifier_block lan966x_netdevice_nb __read_mostly = {
> > + .notifier_call = lan966x_netdevice_event,
> > +};
> > +
> > +static struct notifier_block lan966x_switchdev_nb __read_mostly = {
> > + .notifier_call = lan966x_switchdev_event,
> > +};
> > +
> > +static struct notifier_block lan966x_switchdev_blocking_nb __read_mostly = {
> > + .notifier_call = lan966x_switchdev_blocking_event,
> > +};
> > +
> > +void lan966x_register_notifier_blocks(void)
> > +{
> > + register_netdevice_notifier(&lan966x_netdevice_nb);
> > + register_switchdev_notifier(&lan966x_switchdev_nb);
> > + register_switchdev_blocking_notifier(&lan966x_switchdev_blocking_nb);
> > +}
> > +
> > +void lan966x_unregister_notifier_blocks(void)
> > +{
> > + unregister_switchdev_blocking_notifier(&lan966x_switchdev_blocking_nb);
> > + unregister_switchdev_notifier(&lan966x_switchdev_nb);
> > + unregister_netdevice_notifier(&lan966x_netdevice_nb);
> > +}
> > --
> > 2.33.0
> >
--
/Horatiu
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH net-next v7 7/9] net: lan966x: Add vlan support.
2021-12-17 15:53 [PATCH net-next v7 0/9] net: lan966x: Add switchdev and vlan support Horatiu Vultur
` (5 preceding siblings ...)
2021-12-17 15:53 ` [PATCH net-next v7 6/9] net: lan966x: Add support to offload the forwarding Horatiu Vultur
@ 2021-12-17 15:53 ` Horatiu Vultur
2021-12-17 18:14 ` Vladimir Oltean
2021-12-17 15:53 ` [PATCH net-next v7 8/9] net: lan966x: Extend switchdev bridge flags Horatiu Vultur
2021-12-17 15:53 ` [PATCH net-next v7 9/9] net: lan966x: Extend switchdev with fdb support Horatiu Vultur
8 siblings, 1 reply; 18+ messages in thread
From: Horatiu Vultur @ 2021-12-17 15:53 UTC (permalink / raw)
To: netdev, devicetree, linux-kernel
Cc: davem, kuba, robh+dt, UNGLinuxDriver, linux, f.fainelli,
vivien.didelot, vladimir.oltean, andrew, Horatiu Vultur
Extend the driver to support vlan filtering by implementing the
switchdev calls SWITCHDEV_OBJ_ID_PORT_VLAN,
SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
.../net/ethernet/microchip/lan966x/Makefile | 3 +-
.../ethernet/microchip/lan966x/lan966x_main.c | 20 +-
.../ethernet/microchip/lan966x/lan966x_main.h | 26 +-
.../microchip/lan966x/lan966x_switchdev.c | 106 +++++-
.../ethernet/microchip/lan966x/lan966x_vlan.c | 301 ++++++++++++++++++
5 files changed, 450 insertions(+), 6 deletions(-)
create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_vlan.c
diff --git a/drivers/net/ethernet/microchip/lan966x/Makefile b/drivers/net/ethernet/microchip/lan966x/Makefile
index 974229c51f55..d82e896c2e53 100644
--- a/drivers/net/ethernet/microchip/lan966x/Makefile
+++ b/drivers/net/ethernet/microchip/lan966x/Makefile
@@ -6,4 +6,5 @@
obj-$(CONFIG_LAN966X_SWITCH) += lan966x-switch.o
lan966x-switch-objs := lan966x_main.o lan966x_phylink.o lan966x_port.o \
- lan966x_mac.o lan966x_ethtool.o lan966x_switchdev.o
+ lan966x_mac.o lan966x_ethtool.o lan966x_switchdev.o \
+ lan966x_vlan.o
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
index 5af60234d81d..1a706d8812b0 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
@@ -108,12 +108,12 @@ static int lan966x_port_set_mac_address(struct net_device *dev, void *p)
int ret;
/* Learn the new net device MAC address in the mac table. */
- ret = lan966x_mac_cpu_learn(lan966x, addr->sa_data, port->pvid);
+ ret = lan966x_mac_cpu_learn(lan966x, addr->sa_data, HOST_PVID);
if (ret)
return ret;
/* Then forget the previous one. */
- ret = lan966x_mac_cpu_forget(lan966x, dev->dev_addr, port->pvid);
+ ret = lan966x_mac_cpu_forget(lan966x, dev->dev_addr, HOST_PVID);
if (ret)
return ret;
@@ -283,6 +283,12 @@ static void lan966x_ifh_set_ipv(void *ifh, u64 bypass)
IFH_POS_IPV, IFH_LEN * 4, PACK, 0);
}
+static void lan966x_ifh_set_vid(void *ifh, u64 vid)
+{
+ packing(ifh, &vid, IFH_POS_TCI + IFH_WID_TCI - 1,
+ IFH_POS_TCI, IFH_LEN * 4, PACK, 0);
+}
+
static int lan966x_port_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct lan966x_port *port = netdev_priv(dev);
@@ -294,6 +300,7 @@ static int lan966x_port_xmit(struct sk_buff *skb, struct net_device *dev)
lan966x_ifh_set_port(ifh, BIT_ULL(port->chip_port));
lan966x_ifh_set_qos_class(ifh, skb->priority >= 7 ? 0x7 : skb->priority);
lan966x_ifh_set_ipv(ifh, skb->priority >= 7 ? 0x7 : skb->priority);
+ lan966x_ifh_set_vid(ifh, skb_vlan_tag_get(skb));
return lan966x_port_ifh_xmit(skb, ifh, dev);
}
@@ -575,13 +582,14 @@ static int lan966x_probe_port(struct lan966x *lan966x, u32 p,
port->dev = dev;
port->lan966x = lan966x;
port->chip_port = p;
- port->pvid = PORT_PVID;
lan966x->ports[p] = port;
dev->max_mtu = ETH_MAX_MTU;
dev->netdev_ops = &lan966x_port_netdev_ops;
dev->ethtool_ops = &lan966x_ethtool_ops;
+ dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
+ NETIF_F_HW_VLAN_STAG_TX;
dev->needed_headroom = IFH_LEN * sizeof(u32);
eth_hw_addr_gen(dev, lan966x->base_mac, p + 1);
@@ -628,6 +636,10 @@ static int lan966x_probe_port(struct lan966x *lan966x, u32 p,
return err;
}
+ lan966x_vlan_port_set_vlan_aware(port, 0);
+ lan966x_vlan_port_set_vid(port, HOST_PVID, false, false);
+ lan966x_vlan_port_apply(port);
+
return 0;
}
@@ -638,6 +650,8 @@ static void lan966x_init(struct lan966x *lan966x)
/* MAC table initialization */
lan966x_mac_init(lan966x);
+ lan966x_vlan_init(lan966x);
+
/* Flush queues */
lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) |
GENMASK(1, 0),
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
index 4723a904c13e..19635cea6634 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
@@ -4,6 +4,7 @@
#define __LAN966X_MAIN_H__
#include <linux/etherdevice.h>
+#include <linux/if_vlan.h>
#include <linux/jiffies.h>
#include <linux/phy.h>
#include <linux/phylink.h>
@@ -22,7 +23,8 @@
#define PGID_SRC 80
#define PGID_ENTRIES 89
-#define PORT_PVID 0
+#define UNAWARE_PVID 0
+#define HOST_PVID 4095
/* Reserved amount for (SRC, PRIO) at index 8*SRC + PRIO */
#define QSYS_Q_RSRV 95
@@ -82,6 +84,9 @@ struct lan966x {
struct list_head mac_entries;
spinlock_t mac_lock; /* lock for mac_entries list */
+ u16 vlan_mask[VLAN_N_VID];
+ DECLARE_BITMAP(cpu_vlan_mask, VLAN_N_VID);
+
/* stats */
const struct lan966x_stat_layout *stats_layout;
u32 num_stats;
@@ -113,6 +118,8 @@ struct lan966x_port {
u8 chip_port;
u16 pvid;
+ u16 vid;
+ bool vlan_aware;
struct phylink_config phylink_config;
struct phylink_pcs phylink_pcs;
@@ -166,6 +173,23 @@ int lan966x_mac_add_entry(struct lan966x *lan966x,
void lan966x_mac_purge_entries(struct lan966x *lan966x);
irqreturn_t lan966x_mac_irq_handler(struct lan966x *lan966x);
+void lan966x_vlan_init(struct lan966x *lan966x);
+void lan966x_vlan_port_apply(struct lan966x_port *port);
+bool lan966x_vlan_cpu_member_cpu_vlan_mask(struct lan966x *lan966x, u16 vid);
+void lan966x_vlan_port_set_vlan_aware(struct lan966x_port *port,
+ bool vlan_aware);
+int lan966x_vlan_port_set_vid(struct lan966x_port *port,
+ u16 vid,
+ bool pvid,
+ bool untagged);
+void lan966x_vlan_port_add_vlan(struct lan966x_port *port,
+ u16 vid,
+ bool pvid,
+ bool untagged);
+void lan966x_vlan_port_del_vlan(struct lan966x_port *port, u16 vid);
+void lan966x_vlan_cpu_add_vlan(struct lan966x *lan966x, u16 vid);
+void lan966x_vlan_cpu_del_vlan(struct lan966x *lan966x, u16 vid);
+
static inline void __iomem *lan_addr(void __iomem *base[],
int id, int tinst, int tcnt,
int gbase, int ginst,
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
index 9db17b677357..cef9e690fb82 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
@@ -73,6 +73,10 @@ static int lan966x_port_attr_set(struct net_device *dev, const void *ctx,
case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
lan966x_port_ageing_set(port, attr->u.ageing_time);
break;
+ case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
+ lan966x_vlan_port_set_vlan_aware(port, attr->u.vlan_filtering);
+ lan966x_vlan_port_apply(port);
+ break;
default:
err = -EOPNOTSUPP;
break;
@@ -120,7 +124,12 @@ static void lan966x_port_bridge_leave(struct lan966x_port *port,
if (!lan966x->bridge_mask)
lan966x->bridge = NULL;
- lan966x_mac_cpu_learn(lan966x, port->dev->dev_addr, PORT_PVID);
+ /* Set the port back to host mode */
+ lan966x_vlan_port_set_vlan_aware(port, false);
+ lan966x_vlan_port_set_vid(port, HOST_PVID, false, false);
+ lan966x_vlan_port_apply(port);
+
+ lan966x_mac_cpu_learn(lan966x, port->dev->dev_addr, HOST_PVID);
}
static int lan966x_port_changeupper(struct net_device *dev,
@@ -264,6 +273,91 @@ static int lan966x_switchdev_event(struct notifier_block *nb,
return NOTIFY_DONE;
}
+static int lan966x_handle_port_vlan_add(struct lan966x_port *port,
+ const struct switchdev_obj *obj)
+{
+ const struct switchdev_obj_port_vlan *v = SWITCHDEV_OBJ_PORT_VLAN(obj);
+ struct lan966x *lan966x = port->lan966x;
+
+ /* When adding a port to a vlan, we get a callback for the port but
+ * also for the bridge. When get the callback for the bridge just bail
+ * out. Then when the bridge is added to the vlan, then we get a
+ * callback here but in this case the flags has set:
+ * BRIDGE_VLAN_INFO_BRENTRY. In this case it means that the CPU
+ * port is added to the vlan, so the broadcast frames and unicast frames
+ * with dmac of the bridge should be foward to CPU.
+ */
+ if (netif_is_bridge_master(obj->orig_dev) &&
+ !(v->flags & BRIDGE_VLAN_INFO_BRENTRY))
+ return 0;
+
+ if (!netif_is_bridge_master(obj->orig_dev))
+ lan966x_vlan_port_add_vlan(port, v->vid,
+ v->flags & BRIDGE_VLAN_INFO_PVID,
+ v->flags & BRIDGE_VLAN_INFO_UNTAGGED);
+ else
+ lan966x_vlan_cpu_add_vlan(lan966x, v->vid);
+
+ return 0;
+}
+
+static int lan966x_handle_port_obj_add(struct net_device *dev, const void *ctx,
+ const struct switchdev_obj *obj,
+ struct netlink_ext_ack *extack)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ int err;
+
+ if (ctx && ctx != port)
+ return 0;
+
+ switch (obj->id) {
+ case SWITCHDEV_OBJ_ID_PORT_VLAN:
+ err = lan966x_handle_port_vlan_add(port, obj);
+ break;
+ default:
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ return err;
+}
+
+static int lan966x_handle_port_vlan_del(struct lan966x_port *port,
+ const struct switchdev_obj *obj)
+{
+ const struct switchdev_obj_port_vlan *v = SWITCHDEV_OBJ_PORT_VLAN(obj);
+ struct lan966x *lan966x = port->lan966x;
+
+ if (!netif_is_bridge_master(obj->orig_dev))
+ lan966x_vlan_port_del_vlan(port, v->vid);
+ else
+ lan966x_vlan_cpu_del_vlan(lan966x, v->vid);
+
+ return 0;
+}
+
+static int lan966x_handle_port_obj_del(struct net_device *dev, const void *ctx,
+ const struct switchdev_obj *obj)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ int err;
+
+ if (ctx && ctx != port)
+ return 0;
+
+ switch (obj->id) {
+ case SWITCHDEV_OBJ_ID_PORT_VLAN:
+ err = lan966x_handle_port_vlan_del(port, obj);
+ break;
+ default:
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ return err;
+}
+
static int lan966x_switchdev_blocking_event(struct notifier_block *nb,
unsigned long event,
void *ptr)
@@ -272,6 +366,16 @@ static int lan966x_switchdev_blocking_event(struct notifier_block *nb,
int err;
switch (event) {
+ case SWITCHDEV_PORT_OBJ_ADD:
+ err = switchdev_handle_port_obj_add(dev, ptr,
+ lan966x_netdevice_check,
+ lan966x_handle_port_obj_add);
+ return notifier_from_errno(err);
+ case SWITCHDEV_PORT_OBJ_DEL:
+ err = switchdev_handle_port_obj_del(dev, ptr,
+ lan966x_netdevice_check,
+ lan966x_handle_port_obj_del);
+ return notifier_from_errno(err);
case SWITCHDEV_PORT_ATTR_SET:
err = switchdev_handle_port_attr_set(dev, ptr,
lan966x_netdevice_check,
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_vlan.c b/drivers/net/ethernet/microchip/lan966x/lan966x_vlan.c
new file mode 100644
index 000000000000..64eb80626deb
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_vlan.c
@@ -0,0 +1,301 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include "lan966x_main.h"
+
+#define VLANACCESS_CMD_IDLE 0
+#define VLANACCESS_CMD_READ 1
+#define VLANACCESS_CMD_WRITE 2
+#define VLANACCESS_CMD_INIT 3
+
+static int lan966x_vlan_get_status(struct lan966x *lan966x)
+{
+ return lan_rd(lan966x, ANA_VLANACCESS);
+}
+
+static int lan966x_vlan_wait_for_completion(struct lan966x *lan966x)
+{
+ u32 val;
+
+ return readx_poll_timeout(lan966x_vlan_get_status,
+ lan966x, val,
+ (val & ANA_VLANACCESS_VLAN_TBL_CMD) ==
+ VLANACCESS_CMD_IDLE,
+ TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US);
+}
+
+static void lan966x_vlan_set_mask(struct lan966x *lan966x, u16 vid)
+{
+ u16 mask = lan966x->vlan_mask[vid];
+ bool cpu_dis;
+
+ cpu_dis = !(mask & BIT(CPU_PORT));
+
+ /* Set flags and the VID to configure */
+ lan_rmw(ANA_VLANTIDX_VLAN_PGID_CPU_DIS_SET(cpu_dis) |
+ ANA_VLANTIDX_V_INDEX_SET(vid),
+ ANA_VLANTIDX_VLAN_PGID_CPU_DIS |
+ ANA_VLANTIDX_V_INDEX,
+ lan966x, ANA_VLANTIDX);
+
+ /* Set the vlan port members mask */
+ lan_rmw(ANA_VLAN_PORT_MASK_VLAN_PORT_MASK_SET(mask),
+ ANA_VLAN_PORT_MASK_VLAN_PORT_MASK,
+ lan966x, ANA_VLAN_PORT_MASK);
+
+ /* Issue a write command */
+ lan_rmw(ANA_VLANACCESS_VLAN_TBL_CMD_SET(VLANACCESS_CMD_WRITE),
+ ANA_VLANACCESS_VLAN_TBL_CMD,
+ lan966x, ANA_VLANACCESS);
+
+ if (lan966x_vlan_wait_for_completion(lan966x))
+ dev_err(lan966x->dev, "Vlan set mask failed\n");
+}
+
+static void lan966x_vlan_port_add_vlan_mask(struct lan966x_port *port, u16 vid)
+{
+ struct lan966x *lan966x = port->lan966x;
+ u8 p = port->chip_port;
+
+ lan966x->vlan_mask[vid] |= BIT(p);
+ lan966x_vlan_set_mask(lan966x, vid);
+}
+
+static void lan966x_vlan_port_del_vlan_mask(struct lan966x_port *port, u16 vid)
+{
+ struct lan966x *lan966x = port->lan966x;
+ u8 p = port->chip_port;
+
+ lan966x->vlan_mask[vid] &= ~BIT(p);
+ lan966x_vlan_set_mask(lan966x, vid);
+}
+
+static bool lan966x_vlan_port_any_vlan_mask(struct lan966x *lan966x, u16 vid)
+{
+ return !!(lan966x->vlan_mask[vid] & ~BIT(CPU_PORT));
+}
+
+static void lan966x_vlan_cpu_add_vlan_mask(struct lan966x *lan966x, u16 vid)
+{
+ lan966x->vlan_mask[vid] |= BIT(CPU_PORT);
+ lan966x_vlan_set_mask(lan966x, vid);
+}
+
+static void lan966x_vlan_cpu_del_vlan_mask(struct lan966x *lan966x, u16 vid)
+{
+ lan966x->vlan_mask[vid] &= ~BIT(CPU_PORT);
+ lan966x_vlan_set_mask(lan966x, vid);
+}
+
+static void lan966x_vlan_cpu_add_cpu_vlan_mask(struct lan966x *lan966x, u16 vid)
+{
+ __set_bit(vid, lan966x->cpu_vlan_mask);
+}
+
+static void lan966x_vlan_cpu_del_cpu_vlan_mask(struct lan966x *lan966x, u16 vid)
+{
+ __clear_bit(vid, lan966x->cpu_vlan_mask);
+}
+
+bool lan966x_vlan_cpu_member_cpu_vlan_mask(struct lan966x *lan966x, u16 vid)
+{
+ return test_bit(vid, lan966x->cpu_vlan_mask);
+}
+
+static u16 lan966x_vlan_port_get_pvid(struct lan966x_port *port)
+{
+ struct lan966x *lan966x = port->lan966x;
+
+ if (!(lan966x->bridge_mask & BIT(port->chip_port)))
+ return HOST_PVID;
+
+ return port->vlan_aware ? port->pvid : UNAWARE_PVID;
+}
+
+int lan966x_vlan_port_set_vid(struct lan966x_port *port, u16 vid,
+ bool pvid, bool untagged)
+{
+ struct lan966x *lan966x = port->lan966x;
+
+ /* Egress vlan classification */
+ if (untagged && port->vid != vid) {
+ if (port->vid) {
+ dev_err(lan966x->dev,
+ "Port already has a native VLAN: %d\n",
+ port->vid);
+ return -EBUSY;
+ }
+ port->vid = vid;
+ }
+
+ /* Default ingress vlan classification */
+ if (pvid)
+ port->pvid = vid;
+
+ return 0;
+}
+
+static void lan966x_vlan_port_remove_vid(struct lan966x_port *port, u16 vid)
+{
+ if (port->pvid == vid)
+ port->pvid = 0;
+
+ if (port->vid == vid)
+ port->vid = 0;
+}
+
+void lan966x_vlan_port_set_vlan_aware(struct lan966x_port *port,
+ bool vlan_aware)
+{
+ port->vlan_aware = vlan_aware;
+}
+
+void lan966x_vlan_port_apply(struct lan966x_port *port)
+{
+ struct lan966x *lan966x = port->lan966x;
+ u16 pvid;
+ u32 val;
+
+ pvid = lan966x_vlan_port_get_pvid(port);
+
+ /* Ingress clasification (ANA_PORT_VLAN_CFG) */
+ /* Default vlan to classify for untagged frames (may be zero) */
+ val = ANA_VLAN_CFG_VLAN_VID_SET(pvid);
+ if (port->vlan_aware)
+ val |= ANA_VLAN_CFG_VLAN_AWARE_ENA_SET(1) |
+ ANA_VLAN_CFG_VLAN_POP_CNT_SET(1);
+
+ lan_rmw(val,
+ ANA_VLAN_CFG_VLAN_VID | ANA_VLAN_CFG_VLAN_AWARE_ENA |
+ ANA_VLAN_CFG_VLAN_POP_CNT,
+ lan966x, ANA_VLAN_CFG(port->chip_port));
+
+ /* Drop frames with multicast source address */
+ val = ANA_DROP_CFG_DROP_MC_SMAC_ENA_SET(1);
+ if (port->vlan_aware && !pvid)
+ /* If port is vlan-aware and tagged, drop untagged and priority
+ * tagged frames.
+ */
+ val |= ANA_DROP_CFG_DROP_UNTAGGED_ENA_SET(1) |
+ ANA_DROP_CFG_DROP_PRIO_S_TAGGED_ENA_SET(1) |
+ ANA_DROP_CFG_DROP_PRIO_C_TAGGED_ENA_SET(1);
+
+ lan_wr(val, lan966x, ANA_DROP_CFG(port->chip_port));
+
+ /* Egress configuration (REW_TAG_CFG): VLAN tag type to 8021Q */
+ val = REW_TAG_CFG_TAG_TPID_CFG_SET(0);
+ if (port->vlan_aware) {
+ if (port->vid)
+ /* Tag all frames except when VID == DEFAULT_VLAN */
+ val |= REW_TAG_CFG_TAG_CFG_SET(1);
+ else
+ val |= REW_TAG_CFG_TAG_CFG_SET(3);
+ }
+
+ /* Update only some bits in the register */
+ lan_rmw(val,
+ REW_TAG_CFG_TAG_TPID_CFG | REW_TAG_CFG_TAG_CFG,
+ lan966x, REW_TAG_CFG(port->chip_port));
+
+ /* Set default VLAN and tag type to 8021Q */
+ lan_rmw(REW_PORT_VLAN_CFG_PORT_TPID_SET(ETH_P_8021Q) |
+ REW_PORT_VLAN_CFG_PORT_VID_SET(port->vid),
+ REW_PORT_VLAN_CFG_PORT_TPID |
+ REW_PORT_VLAN_CFG_PORT_VID,
+ lan966x, REW_PORT_VLAN_CFG(port->chip_port));
+}
+
+void lan966x_vlan_port_add_vlan(struct lan966x_port *port,
+ u16 vid,
+ bool pvid,
+ bool untagged)
+{
+ struct lan966x *lan966x = port->lan966x;
+
+ if (lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x, vid))
+ lan966x_vlan_cpu_add_vlan_mask(lan966x, vid);
+
+ lan966x_vlan_port_set_vid(port, vid, pvid, untagged);
+ lan966x_vlan_port_add_vlan_mask(port, vid);
+ lan966x_vlan_port_apply(port);
+}
+
+void lan966x_vlan_port_del_vlan(struct lan966x_port *port, u16 vid)
+{
+ struct lan966x *lan966x = port->lan966x;
+
+ lan966x_vlan_port_remove_vid(port, vid);
+ lan966x_vlan_port_del_vlan_mask(port, vid);
+ lan966x_vlan_port_apply(port);
+
+ /* In case there are no other ports in vlan then remove the CPU from
+ * that vlan but still keep it in the mask because it may be needed
+ * again then another port gets added in that vlan
+ */
+ if (!lan966x_vlan_port_any_vlan_mask(lan966x, vid))
+ lan966x_vlan_cpu_del_vlan_mask(lan966x, vid);
+}
+
+void lan966x_vlan_cpu_add_vlan(struct lan966x *lan966x, u16 vid)
+{
+ /* Add an entry in the MAC table for the CPU
+ * Add the CPU part of the vlan only if there is another port in that
+ * vlan otherwise all the broadcast frames in that vlan will go to CPU
+ * even if none of the ports are in the vlan and then the CPU will just
+ * need to discard these frames. It is required to store this
+ * information so when a front port is added then it would add also the
+ * CPU port.
+ */
+ if (lan966x_vlan_port_any_vlan_mask(lan966x, vid))
+ lan966x_vlan_cpu_add_vlan_mask(lan966x, vid);
+
+ lan966x_vlan_cpu_add_cpu_vlan_mask(lan966x, vid);
+}
+
+void lan966x_vlan_cpu_del_vlan(struct lan966x *lan966x, u16 vid)
+{
+ /* Remove the CPU part of the vlan */
+ lan966x_vlan_cpu_del_cpu_vlan_mask(lan966x, vid);
+ lan966x_vlan_cpu_del_vlan_mask(lan966x, vid);
+}
+
+void lan966x_vlan_init(struct lan966x *lan966x)
+{
+ u16 port, vid;
+
+ /* Clear VLAN table, by default all ports are members of all VLANS */
+ lan_rmw(ANA_VLANACCESS_VLAN_TBL_CMD_SET(VLANACCESS_CMD_INIT),
+ ANA_VLANACCESS_VLAN_TBL_CMD,
+ lan966x, ANA_VLANACCESS);
+ lan966x_vlan_wait_for_completion(lan966x);
+
+ for (vid = 1; vid < VLAN_N_VID; vid++) {
+ lan966x->vlan_mask[vid] = 0;
+ lan966x_vlan_set_mask(lan966x, vid);
+ }
+
+ /* Set all the ports + cpu to be part of HOST_PVID and UNAWARE_PVID */
+ lan966x->vlan_mask[HOST_PVID] =
+ GENMASK(lan966x->num_phys_ports - 1, 0) | BIT(CPU_PORT);
+ lan966x_vlan_set_mask(lan966x, HOST_PVID);
+
+ lan966x->vlan_mask[UNAWARE_PVID] =
+ GENMASK(lan966x->num_phys_ports - 1, 0) | BIT(CPU_PORT);
+ lan966x_vlan_set_mask(lan966x, UNAWARE_PVID);
+
+ lan966x_vlan_cpu_add_cpu_vlan_mask(lan966x, UNAWARE_PVID);
+
+ /* Configure the CPU port to be vlan aware */
+ lan_wr(ANA_VLAN_CFG_VLAN_VID_SET(0) |
+ ANA_VLAN_CFG_VLAN_AWARE_ENA_SET(1) |
+ ANA_VLAN_CFG_VLAN_POP_CNT_SET(1),
+ lan966x, ANA_VLAN_CFG(CPU_PORT));
+
+ /* Set vlan ingress filter mask to all ports */
+ lan_wr(GENMASK(lan966x->num_phys_ports, 0),
+ lan966x, ANA_VLANMASK);
+
+ for (port = 0; port < lan966x->num_phys_ports; port++) {
+ lan_wr(0, lan966x, REW_PORT_VLAN_CFG(port));
+ lan_wr(0, lan966x, REW_TAG_CFG(port));
+ }
+}
--
2.33.0
^ permalink raw reply related [flat|nested] 18+ messages in thread* Re: [PATCH net-next v7 7/9] net: lan966x: Add vlan support.
2021-12-17 15:53 ` [PATCH net-next v7 7/9] net: lan966x: Add vlan support Horatiu Vultur
@ 2021-12-17 18:14 ` Vladimir Oltean
2021-12-18 13:00 ` Horatiu Vultur
0 siblings, 1 reply; 18+ messages in thread
From: Vladimir Oltean @ 2021-12-17 18:14 UTC (permalink / raw)
To: Horatiu Vultur
Cc: netdev, devicetree, linux-kernel, davem, kuba, robh+dt,
UNGLinuxDriver, linux, f.fainelli, vivien.didelot, andrew
On Fri, Dec 17, 2021 at 04:53:51PM +0100, Horatiu Vultur wrote:
> @@ -120,7 +124,12 @@ static void lan966x_port_bridge_leave(struct lan966x_port *port,
> if (!lan966x->bridge_mask)
> lan966x->bridge = NULL;
>
> - lan966x_mac_cpu_learn(lan966x, port->dev->dev_addr, PORT_PVID);
> + /* Set the port back to host mode */
> + lan966x_vlan_port_set_vlan_aware(port, false);
> + lan966x_vlan_port_set_vid(port, HOST_PVID, false, false);
> + lan966x_vlan_port_apply(port);
> +
> + lan966x_mac_cpu_learn(lan966x, port->dev->dev_addr, HOST_PVID);
Do you still need to re-learn the port MAC address?
> }
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH net-next v7 7/9] net: lan966x: Add vlan support.
2021-12-17 18:14 ` Vladimir Oltean
@ 2021-12-18 13:00 ` Horatiu Vultur
0 siblings, 0 replies; 18+ messages in thread
From: Horatiu Vultur @ 2021-12-18 13:00 UTC (permalink / raw)
To: Vladimir Oltean
Cc: netdev, devicetree, linux-kernel, davem, kuba, robh+dt,
UNGLinuxDriver, linux, f.fainelli, vivien.didelot, andrew
The 12/17/2021 18:14, Vladimir Oltean wrote:
>
> On Fri, Dec 17, 2021 at 04:53:51PM +0100, Horatiu Vultur wrote:
> > @@ -120,7 +124,12 @@ static void lan966x_port_bridge_leave(struct lan966x_port *port,
> > if (!lan966x->bridge_mask)
> > lan966x->bridge = NULL;
> >
> > - lan966x_mac_cpu_learn(lan966x, port->dev->dev_addr, PORT_PVID);
> > + /* Set the port back to host mode */
> > + lan966x_vlan_port_set_vlan_aware(port, false);
> > + lan966x_vlan_port_set_vid(port, HOST_PVID, false, false);
> > + lan966x_vlan_port_apply(port);
> > +
> > + lan966x_mac_cpu_learn(lan966x, port->dev->dev_addr, HOST_PVID);
>
> Do you still need to re-learn the port MAC address?
It is not needed. I will remove this in the next version.
>
> > }
--
/Horatiu
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH net-next v7 8/9] net: lan966x: Extend switchdev bridge flags
2021-12-17 15:53 [PATCH net-next v7 0/9] net: lan966x: Add switchdev and vlan support Horatiu Vultur
` (6 preceding siblings ...)
2021-12-17 15:53 ` [PATCH net-next v7 7/9] net: lan966x: Add vlan support Horatiu Vultur
@ 2021-12-17 15:53 ` Horatiu Vultur
2021-12-17 17:40 ` Vladimir Oltean
2021-12-17 15:53 ` [PATCH net-next v7 9/9] net: lan966x: Extend switchdev with fdb support Horatiu Vultur
8 siblings, 1 reply; 18+ messages in thread
From: Horatiu Vultur @ 2021-12-17 15:53 UTC (permalink / raw)
To: netdev, devicetree, linux-kernel
Cc: davem, kuba, robh+dt, UNGLinuxDriver, linux, f.fainelli,
vivien.didelot, vladimir.oltean, andrew, Horatiu Vultur
Currently allow a port to be part or not of the multicast flooding mask.
By implementing the switchdev calls SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS
and SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
.../microchip/lan966x/lan966x_switchdev.c | 34 +++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
index cef9e690fb82..af227b33cb3f 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
@@ -9,6 +9,34 @@ static struct notifier_block lan966x_netdevice_nb __read_mostly;
static struct notifier_block lan966x_switchdev_nb __read_mostly;
static struct notifier_block lan966x_switchdev_blocking_nb __read_mostly;
+static void lan966x_port_bridge_flags(struct lan966x_port *port,
+ struct switchdev_brport_flags flags)
+{
+ u32 val = lan_rd(port->lan966x, ANA_PGID(PGID_MC));
+
+ val = ANA_PGID_PGID_GET(val);
+
+ if (flags.mask & BR_MCAST_FLOOD) {
+ if (flags.val & BR_MCAST_FLOOD)
+ val |= BIT(port->chip_port);
+ else
+ val &= ~BIT(port->chip_port);
+ }
+
+ lan_rmw(ANA_PGID_PGID_SET(val),
+ ANA_PGID_PGID,
+ port->lan966x, ANA_PGID(PGID_MC));
+}
+
+static int lan966x_port_pre_bridge_flags(struct lan966x_port *port,
+ struct switchdev_brport_flags flags)
+{
+ if (flags.mask & ~BR_MCAST_FLOOD)
+ return -EINVAL;
+
+ return 0;
+}
+
static void lan966x_update_fwd_mask(struct lan966x *lan966x)
{
int i;
@@ -67,6 +95,12 @@ static int lan966x_port_attr_set(struct net_device *dev, const void *ctx,
return 0;
switch (attr->id) {
+ case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
+ lan966x_port_bridge_flags(port, attr->u.brport_flags);
+ break;
+ case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
+ err = lan966x_port_pre_bridge_flags(port, attr->u.brport_flags);
+ break;
case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
lan966x_port_stp_state_set(port, attr->u.stp_state);
break;
--
2.33.0
^ permalink raw reply related [flat|nested] 18+ messages in thread* Re: [PATCH net-next v7 8/9] net: lan966x: Extend switchdev bridge flags
2021-12-17 15:53 ` [PATCH net-next v7 8/9] net: lan966x: Extend switchdev bridge flags Horatiu Vultur
@ 2021-12-17 17:40 ` Vladimir Oltean
2021-12-18 12:55 ` Horatiu Vultur
0 siblings, 1 reply; 18+ messages in thread
From: Vladimir Oltean @ 2021-12-17 17:40 UTC (permalink / raw)
To: Horatiu Vultur
Cc: netdev, devicetree, linux-kernel, davem, kuba, robh+dt,
UNGLinuxDriver, linux, f.fainelli, vivien.didelot, andrew
On Fri, Dec 17, 2021 at 04:53:52PM +0100, Horatiu Vultur wrote:
> Currently allow a port to be part or not of the multicast flooding mask.
> By implementing the switchdev calls SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS
> and SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS.
>
> Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
> ---
> .../microchip/lan966x/lan966x_switchdev.c | 34 +++++++++++++++++++
> 1 file changed, 34 insertions(+)
>
> diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
> index cef9e690fb82..af227b33cb3f 100644
> --- a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
> +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
> @@ -9,6 +9,34 @@ static struct notifier_block lan966x_netdevice_nb __read_mostly;
> static struct notifier_block lan966x_switchdev_nb __read_mostly;
> static struct notifier_block lan966x_switchdev_blocking_nb __read_mostly;
>
> +static void lan966x_port_bridge_flags(struct lan966x_port *port,
> + struct switchdev_brport_flags flags)
> +{
> + u32 val = lan_rd(port->lan966x, ANA_PGID(PGID_MC));
> +
> + val = ANA_PGID_PGID_GET(val);
Ideally you'd want to read PGID_MC only if you know that BR_MCAST_FLOOD
is the flag getting changed. Otherwise you'd have to refactor this when
you add support for more brport flags.
> +
> + if (flags.mask & BR_MCAST_FLOOD) {
> + if (flags.val & BR_MCAST_FLOOD)
> + val |= BIT(port->chip_port);
> + else
> + val &= ~BIT(port->chip_port);
> + }
> +
> + lan_rmw(ANA_PGID_PGID_SET(val),
> + ANA_PGID_PGID,
> + port->lan966x, ANA_PGID(PGID_MC));
> +}
> +
> +static int lan966x_port_pre_bridge_flags(struct lan966x_port *port,
> + struct switchdev_brport_flags flags)
> +{
> + if (flags.mask & ~BR_MCAST_FLOOD)
> + return -EINVAL;
> +
> + return 0;
> +}
> +
> static void lan966x_update_fwd_mask(struct lan966x *lan966x)
> {
> int i;
> @@ -67,6 +95,12 @@ static int lan966x_port_attr_set(struct net_device *dev, const void *ctx,
> return 0;
>
> switch (attr->id) {
> + case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
> + lan966x_port_bridge_flags(port, attr->u.brport_flags);
> + break;
> + case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
> + err = lan966x_port_pre_bridge_flags(port, attr->u.brport_flags);
> + break;
> case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
> lan966x_port_stp_state_set(port, attr->u.stp_state);
> break;
> --
> 2.33.0
>
^ permalink raw reply [flat|nested] 18+ messages in thread* Re: [PATCH net-next v7 8/9] net: lan966x: Extend switchdev bridge flags
2021-12-17 17:40 ` Vladimir Oltean
@ 2021-12-18 12:55 ` Horatiu Vultur
0 siblings, 0 replies; 18+ messages in thread
From: Horatiu Vultur @ 2021-12-18 12:55 UTC (permalink / raw)
To: Vladimir Oltean
Cc: netdev, devicetree, linux-kernel, davem, kuba, robh+dt,
UNGLinuxDriver, linux, f.fainelli, vivien.didelot, andrew
The 12/17/2021 17:40, Vladimir Oltean wrote:
>
> On Fri, Dec 17, 2021 at 04:53:52PM +0100, Horatiu Vultur wrote:
> > Currently allow a port to be part or not of the multicast flooding mask.
> > By implementing the switchdev calls SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS
> > and SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS.
> >
> > Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
> > ---
> > .../microchip/lan966x/lan966x_switchdev.c | 34 +++++++++++++++++++
> > 1 file changed, 34 insertions(+)
> >
> > diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
> > index cef9e690fb82..af227b33cb3f 100644
> > --- a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
> > +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
> > @@ -9,6 +9,34 @@ static struct notifier_block lan966x_netdevice_nb __read_mostly;
> > static struct notifier_block lan966x_switchdev_nb __read_mostly;
> > static struct notifier_block lan966x_switchdev_blocking_nb __read_mostly;
> >
> > +static void lan966x_port_bridge_flags(struct lan966x_port *port,
> > + struct switchdev_brport_flags flags)
> > +{
> > + u32 val = lan_rd(port->lan966x, ANA_PGID(PGID_MC));
> > +
> > + val = ANA_PGID_PGID_GET(val);
>
> Ideally you'd want to read PGID_MC only if you know that BR_MCAST_FLOOD
> is the flag getting changed. Otherwise you'd have to refactor this when
> you add support for more brport flags.
I can see your point. I will refactor this now, such that when new flags
are added this should not be changed.
>
> > +
> > + if (flags.mask & BR_MCAST_FLOOD) {
> > + if (flags.val & BR_MCAST_FLOOD)
> > + val |= BIT(port->chip_port);
> > + else
> > + val &= ~BIT(port->chip_port);
> > + }
> > +
> > + lan_rmw(ANA_PGID_PGID_SET(val),
> > + ANA_PGID_PGID,
> > + port->lan966x, ANA_PGID(PGID_MC));
> > +}
> > +
> > +static int lan966x_port_pre_bridge_flags(struct lan966x_port *port,
> > + struct switchdev_brport_flags flags)
> > +{
> > + if (flags.mask & ~BR_MCAST_FLOOD)
> > + return -EINVAL;
> > +
> > + return 0;
> > +}
> > +
> > static void lan966x_update_fwd_mask(struct lan966x *lan966x)
> > {
> > int i;
> > @@ -67,6 +95,12 @@ static int lan966x_port_attr_set(struct net_device *dev, const void *ctx,
> > return 0;
> >
> > switch (attr->id) {
> > + case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
> > + lan966x_port_bridge_flags(port, attr->u.brport_flags);
> > + break;
> > + case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
> > + err = lan966x_port_pre_bridge_flags(port, attr->u.brport_flags);
> > + break;
> > case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
> > lan966x_port_stp_state_set(port, attr->u.stp_state);
> > break;
> > --
> > 2.33.0
> >
--
/Horatiu
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH net-next v7 9/9] net: lan966x: Extend switchdev with fdb support
2021-12-17 15:53 [PATCH net-next v7 0/9] net: lan966x: Add switchdev and vlan support Horatiu Vultur
` (7 preceding siblings ...)
2021-12-17 15:53 ` [PATCH net-next v7 8/9] net: lan966x: Extend switchdev bridge flags Horatiu Vultur
@ 2021-12-17 15:53 ` Horatiu Vultur
2021-12-17 18:12 ` Vladimir Oltean
8 siblings, 1 reply; 18+ messages in thread
From: Horatiu Vultur @ 2021-12-17 15:53 UTC (permalink / raw)
To: netdev, devicetree, linux-kernel
Cc: davem, kuba, robh+dt, UNGLinuxDriver, linux, f.fainelli,
vivien.didelot, vladimir.oltean, andrew, Horatiu Vultur
Extend lan966x driver with fdb support by implementing the switchdev
calls SWITCHDEV_FDB_ADD_TO_DEVICE and SWITCHDEV_FDB_DEL_TO_DEVICE.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
.../net/ethernet/microchip/lan966x/Makefile | 2 +-
.../ethernet/microchip/lan966x/lan966x_fdb.c | 244 ++++++++++++++++++
.../ethernet/microchip/lan966x/lan966x_main.c | 5 +
.../ethernet/microchip/lan966x/lan966x_main.h | 14 +
.../microchip/lan966x/lan966x_switchdev.c | 21 ++
.../ethernet/microchip/lan966x/lan966x_vlan.c | 15 +-
6 files changed, 298 insertions(+), 3 deletions(-)
create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_fdb.c
diff --git a/drivers/net/ethernet/microchip/lan966x/Makefile b/drivers/net/ethernet/microchip/lan966x/Makefile
index d82e896c2e53..ec1a1fa8b0d5 100644
--- a/drivers/net/ethernet/microchip/lan966x/Makefile
+++ b/drivers/net/ethernet/microchip/lan966x/Makefile
@@ -7,4 +7,4 @@ obj-$(CONFIG_LAN966X_SWITCH) += lan966x-switch.o
lan966x-switch-objs := lan966x_main.o lan966x_phylink.o lan966x_port.o \
lan966x_mac.o lan966x_ethtool.o lan966x_switchdev.o \
- lan966x_vlan.o
+ lan966x_vlan.o lan966x_fdb.o
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_fdb.c b/drivers/net/ethernet/microchip/lan966x/lan966x_fdb.c
new file mode 100644
index 000000000000..d67c5dd45384
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_fdb.c
@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <net/switchdev.h>
+
+#include "lan966x_main.h"
+
+struct lan966x_fdb_event_work {
+ struct work_struct work;
+ struct switchdev_notifier_fdb_info fdb_info;
+ struct net_device *dev;
+ struct lan966x *lan966x;
+ unsigned long event;
+};
+
+struct lan966x_fdb_entry {
+ struct list_head list;
+ unsigned char mac[ETH_ALEN] __aligned(2);
+ u16 vid;
+ u32 references;
+};
+
+static struct lan966x_fdb_entry *
+lan966x_fdb_find_entry(struct lan966x *lan966x,
+ struct switchdev_notifier_fdb_info *fdb_info)
+{
+ struct lan966x_fdb_entry *fdb_entry;
+
+ list_for_each_entry(fdb_entry, &lan966x->fdb_entries, list) {
+ if (fdb_entry->vid == fdb_info->vid &&
+ ether_addr_equal(fdb_entry->mac, fdb_info->addr))
+ return fdb_entry;
+ }
+
+ return NULL;
+}
+
+static void lan966x_fdb_add_entry(struct lan966x *lan966x,
+ struct switchdev_notifier_fdb_info *fdb_info)
+{
+ struct lan966x_fdb_entry *fdb_entry;
+
+ fdb_entry = lan966x_fdb_find_entry(lan966x, fdb_info);
+ if (fdb_entry) {
+ fdb_entry->references++;
+ return;
+ }
+
+ fdb_entry = kzalloc(sizeof(*fdb_entry), GFP_KERNEL);
+ if (!fdb_entry)
+ return;
+
+ memcpy(fdb_entry->mac, fdb_info->addr, ETH_ALEN);
+ fdb_entry->vid = fdb_info->vid;
+ fdb_entry->references = 1;
+ list_add_tail(&fdb_entry->list, &lan966x->fdb_entries);
+}
+
+static bool lan966x_fdb_del_entry(struct lan966x *lan966x,
+ struct switchdev_notifier_fdb_info *fdb_info)
+{
+ struct lan966x_fdb_entry *fdb_entry, *tmp;
+
+ list_for_each_entry_safe(fdb_entry, tmp, &lan966x->fdb_entries,
+ list) {
+ if (fdb_entry->vid == fdb_info->vid &&
+ ether_addr_equal(fdb_entry->mac, fdb_info->addr)) {
+ fdb_entry->references--;
+ if (!fdb_entry->references) {
+ list_del(&fdb_entry->list);
+ kfree(fdb_entry);
+ return true;
+ }
+ break;
+ }
+ }
+
+ return false;
+}
+
+void lan966x_fdb_write_entries(struct lan966x *lan966x, u16 vid)
+{
+ struct lan966x_fdb_entry *fdb_entry;
+
+ list_for_each_entry(fdb_entry, &lan966x->fdb_entries, list) {
+ if (fdb_entry->vid != vid)
+ continue;
+
+ lan966x_mac_cpu_learn(lan966x, fdb_entry->mac, fdb_entry->vid);
+ }
+}
+
+void lan966x_fdb_erase_entries(struct lan966x *lan966x, u16 vid)
+{
+ struct lan966x_fdb_entry *fdb_entry;
+
+ list_for_each_entry(fdb_entry, &lan966x->fdb_entries, list) {
+ if (fdb_entry->vid != vid)
+ continue;
+
+ lan966x_mac_cpu_forget(lan966x, fdb_entry->mac, fdb_entry->vid);
+ }
+}
+
+static void lan966x_fdb_purge_entries(struct lan966x *lan966x)
+{
+ struct lan966x_fdb_entry *fdb_entry, *tmp;
+
+ list_for_each_entry_safe(fdb_entry, tmp, &lan966x->fdb_entries, list) {
+ list_del(&fdb_entry->list);
+ kfree(fdb_entry);
+ }
+}
+
+int lan966x_fdb_init(struct lan966x *lan966x)
+{
+ INIT_LIST_HEAD(&lan966x->fdb_entries);
+ lan966x->fdb_work = alloc_ordered_workqueue("lan966x_order", 0);
+ if (!lan966x->fdb_work)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void lan966x_fdb_deinit(struct lan966x *lan966x)
+{
+ destroy_workqueue(lan966x->fdb_work);
+ lan966x_fdb_purge_entries(lan966x);
+}
+
+static void lan966x_fdb_event_work(struct work_struct *work)
+{
+ struct lan966x_fdb_event_work *fdb_work =
+ container_of(work, struct lan966x_fdb_event_work, work);
+ struct switchdev_notifier_fdb_info *fdb_info;
+ struct net_device *dev = fdb_work->dev;
+ struct lan966x_port *port;
+ struct lan966x *lan966x;
+ int ret;
+
+ fdb_info = &fdb_work->fdb_info;
+ lan966x = fdb_work->lan966x;
+
+ if (lan966x_netdevice_check(dev)) {
+ port = netdev_priv(dev);
+
+ switch (fdb_work->event) {
+ case SWITCHDEV_FDB_ADD_TO_DEVICE:
+ if (!fdb_info->added_by_user)
+ break;
+ lan966x_mac_add_entry(lan966x, port, fdb_info->addr,
+ fdb_info->vid);
+ break;
+ case SWITCHDEV_FDB_DEL_TO_DEVICE:
+ if (!fdb_info->added_by_user)
+ break;
+ lan966x_mac_del_entry(lan966x, fdb_info->addr,
+ fdb_info->vid);
+ break;
+ }
+ } else {
+ if (!netif_is_bridge_master(dev))
+ goto out;
+
+ /* In case the bridge is called */
+ switch (fdb_work->event) {
+ case SWITCHDEV_FDB_ADD_TO_DEVICE:
+ /* If there is no front port in this vlan, there is no
+ * point to copy the frame to CPU because it would be
+ * just dropped at later point. So add it only if
+ * there is a port but it is required to store the fdb
+ * entry for later point when a port actually gets in
+ * the vlan.
+ */
+ lan966x_fdb_add_entry(lan966x, fdb_info);
+ if (!lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x,
+ fdb_info->vid))
+ break;
+
+ lan966x_mac_cpu_learn(lan966x, fdb_info->addr,
+ fdb_info->vid);
+ break;
+ case SWITCHDEV_FDB_DEL_TO_DEVICE:
+ ret = lan966x_fdb_del_entry(lan966x, fdb_info);
+ if (!lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x,
+ fdb_info->vid))
+ break;
+
+ if (ret)
+ lan966x_mac_cpu_forget(lan966x, fdb_info->addr,
+ fdb_info->vid);
+ break;
+ }
+ }
+
+out:
+ kfree(fdb_work->fdb_info.addr);
+ kfree(fdb_work);
+ dev_put(dev);
+}
+
+int lan966x_handle_fdb(struct net_device *dev,
+ struct net_device *orig_dev,
+ unsigned long event, const void *ctx,
+ const struct switchdev_notifier_fdb_info *fdb_info)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ struct lan966x *lan966x = port->lan966x;
+ struct lan966x_fdb_event_work *fdb_work;
+
+ if (ctx && ctx != port)
+ return 0;
+
+ switch (event) {
+ case SWITCHDEV_FDB_ADD_TO_DEVICE:
+ case SWITCHDEV_FDB_DEL_TO_DEVICE:
+ if (lan966x_netdevice_check(orig_dev) &&
+ !fdb_info->added_by_user)
+ break;
+
+ fdb_work = kzalloc(sizeof(*fdb_work), GFP_ATOMIC);
+ if (!fdb_work)
+ return -ENOMEM;
+
+ fdb_work->dev = orig_dev;
+ fdb_work->lan966x = lan966x;
+ fdb_work->event = event;
+ INIT_WORK(&fdb_work->work, lan966x_fdb_event_work);
+ memcpy(&fdb_work->fdb_info, fdb_info, sizeof(fdb_work->fdb_info));
+ fdb_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
+ if (!fdb_work->fdb_info.addr)
+ goto err_addr_alloc;
+
+ ether_addr_copy((u8 *)fdb_work->fdb_info.addr, fdb_info->addr);
+ dev_hold(orig_dev);
+
+ queue_work(lan966x->fdb_work, &fdb_work->work);
+ break;
+ }
+
+ return 0;
+err_addr_alloc:
+ kfree(fdb_work);
+ return -ENOMEM;
+}
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
index 1a706d8812b0..a5408106e62e 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
@@ -919,6 +919,10 @@ static int lan966x_probe(struct platform_device *pdev)
lan966x_port_init(lan966x->ports[p]);
}
+ err = lan966x_fdb_init(lan966x);
+ if (err)
+ goto cleanup_ports;
+
return 0;
cleanup_ports:
@@ -945,6 +949,7 @@ static int lan966x_remove(struct platform_device *pdev)
mutex_destroy(&lan966x->stats_lock);
lan966x_mac_purge_entries(lan966x);
+ lan966x_fdb_deinit(lan966x);
return 0;
}
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
index 19635cea6634..051182890237 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
@@ -8,6 +8,7 @@
#include <linux/jiffies.h>
#include <linux/phy.h>
#include <linux/phylink.h>
+#include <net/switchdev.h>
#include "lan966x_regs.h"
#include "lan966x_ifh.h"
@@ -100,6 +101,10 @@ struct lan966x {
/* interrupts */
int xtr_irq;
int ana_irq;
+
+ /* worqueue for fdb */
+ struct workqueue_struct *fdb_work;
+ struct list_head fdb_entries;
};
struct lan966x_port_config {
@@ -190,6 +195,15 @@ void lan966x_vlan_port_del_vlan(struct lan966x_port *port, u16 vid);
void lan966x_vlan_cpu_add_vlan(struct lan966x *lan966x, u16 vid);
void lan966x_vlan_cpu_del_vlan(struct lan966x *lan966x, u16 vid);
+void lan966x_fdb_write_entries(struct lan966x *lan966x, u16 vid);
+void lan966x_fdb_erase_entries(struct lan966x *lan966x, u16 vid);
+int lan966x_fdb_init(struct lan966x *lan966x);
+void lan966x_fdb_deinit(struct lan966x *lan966x);
+int lan966x_handle_fdb(struct net_device *dev,
+ struct net_device *orig_dev,
+ unsigned long event, const void *ctx,
+ const struct switchdev_notifier_fdb_info *fdb_info);
+
static inline void __iomem *lan_addr(void __iomem *base[],
int id, int tinst, int tcnt,
int gbase, int ginst,
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
index af227b33cb3f..9bacb4ddfb4b 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
@@ -290,6 +290,19 @@ static int lan966x_netdevice_event(struct notifier_block *nb,
return notifier_from_errno(ret);
}
+static bool lan966x_foreign_dev_check(const struct net_device *dev,
+ const struct net_device *foreign_dev)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ struct lan966x *lan966x = port->lan966x;
+
+ if (netif_is_bridge_master(foreign_dev))
+ if (lan966x->bridge != foreign_dev)
+ return true;
+
+ return false;
+}
+
static int lan966x_switchdev_event(struct notifier_block *nb,
unsigned long event, void *ptr)
{
@@ -302,6 +315,14 @@ static int lan966x_switchdev_event(struct notifier_block *nb,
lan966x_netdevice_check,
lan966x_port_attr_set);
return notifier_from_errno(err);
+ case SWITCHDEV_FDB_ADD_TO_DEVICE:
+ case SWITCHDEV_FDB_DEL_TO_DEVICE:
+ err = switchdev_handle_fdb_event_to_device(dev, event, ptr,
+ lan966x_netdevice_check,
+ lan966x_foreign_dev_check,
+ lan966x_handle_fdb,
+ NULL);
+ return notifier_from_errno(err);
}
return NOTIFY_DONE;
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_vlan.c b/drivers/net/ethernet/microchip/lan966x/lan966x_vlan.c
index 64eb80626deb..057f48ddf22c 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_vlan.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_vlan.c
@@ -211,8 +211,15 @@ void lan966x_vlan_port_add_vlan(struct lan966x_port *port,
{
struct lan966x *lan966x = port->lan966x;
- if (lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x, vid))
+ /* If the CPU(br) is already part of the vlan then add the fdb
+ * entries in MAC table to copy the frames to the CPU(br).
+ * If the CPU(br) is not part of the vlan then it would
+ * just drop the frames.
+ */
+ if (lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x, vid)) {
lan966x_vlan_cpu_add_vlan_mask(lan966x, vid);
+ lan966x_fdb_write_entries(lan966x, vid);
+ }
lan966x_vlan_port_set_vid(port, vid, pvid, untagged);
lan966x_vlan_port_add_vlan_mask(port, vid);
@@ -231,8 +238,10 @@ void lan966x_vlan_port_del_vlan(struct lan966x_port *port, u16 vid)
* that vlan but still keep it in the mask because it may be needed
* again then another port gets added in that vlan
*/
- if (!lan966x_vlan_port_any_vlan_mask(lan966x, vid))
+ if (!lan966x_vlan_port_any_vlan_mask(lan966x, vid)) {
lan966x_vlan_cpu_del_vlan_mask(lan966x, vid);
+ lan966x_fdb_erase_entries(lan966x, vid);
+ }
}
void lan966x_vlan_cpu_add_vlan(struct lan966x *lan966x, u16 vid)
@@ -249,6 +258,7 @@ void lan966x_vlan_cpu_add_vlan(struct lan966x *lan966x, u16 vid)
lan966x_vlan_cpu_add_vlan_mask(lan966x, vid);
lan966x_vlan_cpu_add_cpu_vlan_mask(lan966x, vid);
+ lan966x_fdb_write_entries(lan966x, vid);
}
void lan966x_vlan_cpu_del_vlan(struct lan966x *lan966x, u16 vid)
@@ -256,6 +266,7 @@ void lan966x_vlan_cpu_del_vlan(struct lan966x *lan966x, u16 vid)
/* Remove the CPU part of the vlan */
lan966x_vlan_cpu_del_cpu_vlan_mask(lan966x, vid);
lan966x_vlan_cpu_del_vlan_mask(lan966x, vid);
+ lan966x_fdb_erase_entries(lan966x, vid);
}
void lan966x_vlan_init(struct lan966x *lan966x)
--
2.33.0
^ permalink raw reply related [flat|nested] 18+ messages in thread* Re: [PATCH net-next v7 9/9] net: lan966x: Extend switchdev with fdb support
2021-12-17 15:53 ` [PATCH net-next v7 9/9] net: lan966x: Extend switchdev with fdb support Horatiu Vultur
@ 2021-12-17 18:12 ` Vladimir Oltean
2021-12-18 13:00 ` Horatiu Vultur
0 siblings, 1 reply; 18+ messages in thread
From: Vladimir Oltean @ 2021-12-17 18:12 UTC (permalink / raw)
To: Horatiu Vultur
Cc: netdev, devicetree, linux-kernel, davem, kuba, robh+dt,
UNGLinuxDriver, linux, f.fainelli, vivien.didelot, andrew
On Fri, Dec 17, 2021 at 04:53:53PM +0100, Horatiu Vultur wrote:
> Extend lan966x driver with fdb support by implementing the switchdev
> calls SWITCHDEV_FDB_ADD_TO_DEVICE and SWITCHDEV_FDB_DEL_TO_DEVICE.
>
> Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
> ---
Looks pretty good. Just one question, since I can't figure this out by
looking at the code. Is the CPU port in the unknown unicast flood mask
currently?
> .../net/ethernet/microchip/lan966x/Makefile | 2 +-
> .../ethernet/microchip/lan966x/lan966x_fdb.c | 244 ++++++++++++++++++
> .../ethernet/microchip/lan966x/lan966x_main.c | 5 +
> .../ethernet/microchip/lan966x/lan966x_main.h | 14 +
> .../microchip/lan966x/lan966x_switchdev.c | 21 ++
> .../ethernet/microchip/lan966x/lan966x_vlan.c | 15 +-
> 6 files changed, 298 insertions(+), 3 deletions(-)
> create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_fdb.c
(...)
> +static void lan966x_fdb_add_entry(struct lan966x *lan966x,
> + struct switchdev_notifier_fdb_info *fdb_info)
> +{
> + struct lan966x_fdb_entry *fdb_entry;
> +
> + fdb_entry = lan966x_fdb_find_entry(lan966x, fdb_info);
> + if (fdb_entry) {
> + fdb_entry->references++;
> + return;
> + }
> +
> + fdb_entry = kzalloc(sizeof(*fdb_entry), GFP_KERNEL);
> + if (!fdb_entry)
> + return;
> +
> + memcpy(fdb_entry->mac, fdb_info->addr, ETH_ALEN);
ether_addr_copy
> + fdb_entry->vid = fdb_info->vid;
> + fdb_entry->references = 1;
> + list_add_tail(&fdb_entry->list, &lan966x->fdb_entries);
> +}
^ permalink raw reply [flat|nested] 18+ messages in thread* Re: [PATCH net-next v7 9/9] net: lan966x: Extend switchdev with fdb support
2021-12-17 18:12 ` Vladimir Oltean
@ 2021-12-18 13:00 ` Horatiu Vultur
0 siblings, 0 replies; 18+ messages in thread
From: Horatiu Vultur @ 2021-12-18 13:00 UTC (permalink / raw)
To: Vladimir Oltean
Cc: netdev, devicetree, linux-kernel, davem, kuba, robh+dt,
UNGLinuxDriver, linux, f.fainelli, vivien.didelot, andrew
The 12/17/2021 18:12, Vladimir Oltean wrote:
>
> On Fri, Dec 17, 2021 at 04:53:53PM +0100, Horatiu Vultur wrote:
> > Extend lan966x driver with fdb support by implementing the switchdev
> > calls SWITCHDEV_FDB_ADD_TO_DEVICE and SWITCHDEV_FDB_DEL_TO_DEVICE.
> >
> > Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
> > ---
>
> Looks pretty good. Just one question, since I can't figure this out by
> looking at the code. Is the CPU port in the unknown unicast flood mask
> currently?
It is not. Because under a bridge can be only lan966x ports so the
HW will do already the flooding of the frames.
>
> > .../net/ethernet/microchip/lan966x/Makefile | 2 +-
> > .../ethernet/microchip/lan966x/lan966x_fdb.c | 244 ++++++++++++++++++
> > .../ethernet/microchip/lan966x/lan966x_main.c | 5 +
> > .../ethernet/microchip/lan966x/lan966x_main.h | 14 +
> > .../microchip/lan966x/lan966x_switchdev.c | 21 ++
> > .../ethernet/microchip/lan966x/lan966x_vlan.c | 15 +-
> > 6 files changed, 298 insertions(+), 3 deletions(-)
> > create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_fdb.c
> (...)
> > +static void lan966x_fdb_add_entry(struct lan966x *lan966x,
> > + struct switchdev_notifier_fdb_info *fdb_info)
> > +{
> > + struct lan966x_fdb_entry *fdb_entry;
> > +
> > + fdb_entry = lan966x_fdb_find_entry(lan966x, fdb_info);
> > + if (fdb_entry) {
> > + fdb_entry->references++;
> > + return;
> > + }
> > +
> > + fdb_entry = kzalloc(sizeof(*fdb_entry), GFP_KERNEL);
> > + if (!fdb_entry)
> > + return;
> > +
> > + memcpy(fdb_entry->mac, fdb_info->addr, ETH_ALEN);
>
> ether_addr_copy
>
> > + fdb_entry->vid = fdb_info->vid;
> > + fdb_entry->references = 1;
> > + list_add_tail(&fdb_entry->list, &lan966x->fdb_entries);
> > +}
--
/Horatiu
^ permalink raw reply [flat|nested] 18+ messages in thread