[PATCH net-next v2 0/3] Add Multicast Filtering support for VLAN interface

[PATCH net-next v2 0/3] Add Multicast Filtering support for VLAN interface

[MD Danish Anwar]

This series adds Multicast filtering support for VLAN interfaces in dual
EMAC and HSR offload mode for ICSSG driver.

Patch 1/3 - Adds support for VLAN in dual EMAC mode
Patch 2/3 - Adds MC filtering support for VLAN in dual EMAC mode
Patch 3/3 - Adds MC filtering support for VLAN in HSR mode

Changes from v1 to v2:
*) Changed netdev_err to netdev_dbg in emac_ndo_vlan_rx_del_vid() in patch 1/3
as suggested by Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
*) Dropped patch [1] from previous version as the patch created issue [2].
Will send out a separate patch to set HSR=m in arch/arm64/configs/defconfig.
Once the defconfig patch gets merged, I will add `depends on HSR` in Kconfig
for TI_ICSSG_PRUETH as suggested by Larysa Zaremba <larysa.zaremba@intel.com>

[1] https://lore.kernel.org/all/20241216100044.577489-2-danishanwar@ti.com/
[2] https://lore.kernel.org/all/202412210336.BmgcX3Td-lkp@intel.com/#t
v1 https://lore.kernel.org/all/20241216100044.577489-1-danishanwar@ti.com/

MD Danish Anwar (3):
  net: ti: icssg-prueth: Add VLAN support in EMAC mode
  net: ti: icssg-prueth: Add Multicast Filtering support for VLAN in MAC
    mode
  net: ti: icssg-prueth: Add Support for Multicast filtering with VLAN
    in HSR mode

 drivers/net/ethernet/ti/icssg/icssg_prueth.c | 175 ++++++++++++++-----
 drivers/net/ethernet/ti/icssg/icssg_prueth.h |   8 +
 include/linux/if_hsr.h                       |  18 ++
 include/linux/netdevice.h                    |   3 +
 net/core/dev_addr_lists.c                    |   7 +-
 net/hsr/hsr_device.c                         |  13 ++
 net/hsr/hsr_main.h                           |   9 -
 7 files changed, 174 insertions(+), 59 deletions(-)


base-commit: ae418e95dd930df6543107521c5ce55e379a9530
-- 
2.34.1

[PATCH net-next v2 1/3] net: ti: icssg-prueth: Add VLAN support in EMAC mode

[MD Danish Anwar]

Add support for vlan filtering in dual EMAC mode.

Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
---
 drivers/net/ethernet/ti/icssg/icssg_prueth.c | 29 +++++++++-----------
 1 file changed, 13 insertions(+), 16 deletions(-)

diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
index c568c84a032b..1663941e59e3 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
@@ -822,19 +822,18 @@ static int emac_ndo_vlan_rx_add_vid(struct net_device *ndev,
 {
 	struct prueth_emac *emac = netdev_priv(ndev);
 	struct prueth *prueth = emac->prueth;
+	int port_mask = BIT(emac->port_id);
 	int untag_mask = 0;
-	int port_mask;
 
-	if (prueth->is_hsr_offload_mode) {
-		port_mask = BIT(PRUETH_PORT_HOST) | BIT(emac->port_id);
-		untag_mask = 0;
+	if (prueth->is_hsr_offload_mode)
+		port_mask |= BIT(PRUETH_PORT_HOST);
 
-		netdev_dbg(emac->ndev, "VID add vid:%u port_mask:%X untag_mask %X\n",
-			   vid, port_mask, untag_mask);
+	netdev_dbg(emac->ndev, "VID add vid:%u port_mask:%X untag_mask %X\n",
+		   vid, port_mask, untag_mask);
+
+	icssg_vtbl_modify(emac, vid, port_mask, untag_mask, true);
+	icssg_set_pvid(emac->prueth, vid, emac->port_id);
 
-		icssg_vtbl_modify(emac, vid, port_mask, untag_mask, true);
-		icssg_set_pvid(emac->prueth, vid, emac->port_id);
-	}
 	return 0;
 }
 
@@ -843,18 +842,16 @@ static int emac_ndo_vlan_rx_del_vid(struct net_device *ndev,
 {
 	struct prueth_emac *emac = netdev_priv(ndev);
 	struct prueth *prueth = emac->prueth;
+	int port_mask = BIT(emac->port_id);
 	int untag_mask = 0;
-	int port_mask;
 
-	if (prueth->is_hsr_offload_mode) {
+	if (prueth->is_hsr_offload_mode)
 		port_mask = BIT(PRUETH_PORT_HOST);
-		untag_mask = 0;
 
-		netdev_dbg(emac->ndev, "VID del vid:%u port_mask:%X untag_mask  %X\n",
-			   vid, port_mask, untag_mask);
+	netdev_dbg(emac->ndev, "VID del vid:%u port_mask:%X untag_mask  %X\n",
+		   vid, port_mask, untag_mask);
+	icssg_vtbl_modify(emac, vid, port_mask, untag_mask, false);
 
-		icssg_vtbl_modify(emac, vid, port_mask, untag_mask, false);
-	}
 	return 0;
 }
 
-- 
2.34.1

[PATCH net-next v2 2/3] net: ti: icssg-prueth: Add Multicast Filtering support for VLAN in MAC mode

[MD Danish Anwar]

Add multicast filtering support for VLAN interfaces in dual EMAC mode
for ICSSG driver.

The driver uses vlan_for_each() API to get the list of available
vlans. The driver then sync mc addr of vlan interface with a locally
mainatined list emac->vlan_mcast_list[vid] using __hw_addr_sync_multiple()
API.

The driver then calls the sync / unsync callbacks and based on whether
the ndev is vlan or not, driver passes appropriate vid to FDB helper
functions.

This commit also exports __hw_addr_sync_multiple() in order to use it
from the ICSSG driver.

Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
---
 drivers/net/ethernet/ti/icssg/icssg_prueth.c | 67 ++++++++++++++++----
 drivers/net/ethernet/ti/icssg/icssg_prueth.h |  6 ++
 include/linux/netdevice.h                    |  3 +
 net/core/dev_addr_lists.c                    |  7 +-
 4 files changed, 66 insertions(+), 17 deletions(-)

diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
index 1663941e59e3..ed8b5a3184d6 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
@@ -472,30 +472,44 @@ const struct icss_iep_clockops prueth_iep_clockops = {
 
 static int icssg_prueth_add_mcast(struct net_device *ndev, const u8 *addr)
 {
-	struct prueth_emac *emac = netdev_priv(ndev);
-	int port_mask = BIT(emac->port_id);
+	struct net_device *real_dev;
+	struct prueth_emac *emac;
+	int port_mask;
+	u8 vlan_id;
 
-	port_mask |= icssg_fdb_lookup(emac, addr, 0);
-	icssg_fdb_add_del(emac, addr, 0, port_mask, true);
-	icssg_vtbl_modify(emac, 0, port_mask, port_mask, true);
+	vlan_id = is_vlan_dev(ndev) ? vlan_dev_vlan_id(ndev) : PRUETH_DFLT_VLAN_MAC;
+	real_dev = is_vlan_dev(ndev) ? vlan_dev_real_dev(ndev) : ndev;
+	emac = netdev_priv(real_dev);
+
+	port_mask = BIT(emac->port_id) | icssg_fdb_lookup(emac, addr, vlan_id);
+	icssg_fdb_add_del(emac, addr, vlan_id, port_mask, true);
+	icssg_vtbl_modify(emac, vlan_id, port_mask, port_mask, true);
 
 	return 0;
 }
 
 static int icssg_prueth_del_mcast(struct net_device *ndev, const u8 *addr)
 {
-	struct prueth_emac *emac = netdev_priv(ndev);
-	int port_mask = BIT(emac->port_id);
+	struct net_device *real_dev;
+	struct prueth_emac *emac;
 	int other_port_mask;
+	int port_mask;
+	u8 vlan_id;
+
+	vlan_id = is_vlan_dev(ndev) ? vlan_dev_vlan_id(ndev) : PRUETH_DFLT_VLAN_MAC;
+	real_dev = is_vlan_dev(ndev) ? vlan_dev_real_dev(ndev) : ndev;
+	emac = netdev_priv(real_dev);
 
-	other_port_mask = port_mask ^ icssg_fdb_lookup(emac, addr, 0);
+	port_mask = BIT(emac->port_id);
+	other_port_mask = port_mask ^ icssg_fdb_lookup(emac, addr, vlan_id);
 
-	icssg_fdb_add_del(emac, addr, 0, port_mask, false);
-	icssg_vtbl_modify(emac, 0, port_mask, port_mask, false);
+	icssg_fdb_add_del(emac, addr, vlan_id, port_mask, false);
+	icssg_vtbl_modify(emac, vlan_id, port_mask, port_mask, false);
 
 	if (other_port_mask) {
-		icssg_fdb_add_del(emac, addr, 0, other_port_mask, true);
-		icssg_vtbl_modify(emac, 0, other_port_mask, other_port_mask, true);
+		icssg_fdb_add_del(emac, addr, vlan_id, other_port_mask, true);
+		icssg_vtbl_modify(emac, vlan_id, other_port_mask,
+				  other_port_mask, true);
 	}
 
 	return 0;
@@ -531,6 +545,25 @@ static int icssg_prueth_hsr_del_mcast(struct net_device *ndev, const u8 *addr)
 	return 0;
 }
 
+static int icssg_update_vlan_mcast(struct net_device *vdev, int vid,
+				   void *args)
+{
+	struct prueth_emac *emac = args;
+
+	if (!vdev || !vid)
+		return 0;
+
+	netif_addr_lock_bh(vdev);
+	__hw_addr_sync_multiple(&emac->vlan_mcast_list[vid], &vdev->mc,
+				vdev->addr_len);
+	netif_addr_unlock_bh(vdev);
+
+	__hw_addr_sync_dev(&emac->vlan_mcast_list[vid], vdev,
+			   icssg_prueth_add_mcast, icssg_prueth_del_mcast);
+
+	return 0;
+}
+
 /**
  * emac_ndo_open - EMAC device open
  * @ndev: network adapter device
@@ -772,12 +805,17 @@ static void emac_ndo_set_rx_mode_work(struct work_struct *work)
 		return;
 	}
 
-	if (emac->prueth->is_hsr_offload_mode)
+	if (emac->prueth->is_hsr_offload_mode) {
 		__dev_mc_sync(ndev, icssg_prueth_hsr_add_mcast,
 			      icssg_prueth_hsr_del_mcast);
-	else
+	} else {
 		__dev_mc_sync(ndev, icssg_prueth_add_mcast,
 			      icssg_prueth_del_mcast);
+		if (rtnl_trylock()) {
+			vlan_for_each(ndev, icssg_update_vlan_mcast, emac);
+			rtnl_unlock();
+		}
+	}
 }
 
 /**
@@ -828,6 +866,7 @@ static int emac_ndo_vlan_rx_add_vid(struct net_device *ndev,
 	if (prueth->is_hsr_offload_mode)
 		port_mask |= BIT(PRUETH_PORT_HOST);
 
+	__hw_addr_init(&emac->vlan_mcast_list[vid]);
 	netdev_dbg(emac->ndev, "VID add vid:%u port_mask:%X untag_mask %X\n",
 		   vid, port_mask, untag_mask);
 
diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
index f5c1d473e9f9..4da8b87408b5 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
@@ -83,6 +83,10 @@
 #define ICSS_CMD_ADD_FILTER 0x7
 #define ICSS_CMD_ADD_MAC 0x8
 
+/* VLAN Filtering Related MACROs */
+#define PRUETH_DFLT_VLAN_MAC	0
+#define MAX_VLAN_ID		256
+
 /* In switch mode there are 3 real ports i.e. 3 mac addrs.
  * however Linux sees only the host side port. The other 2 ports
  * are the switch ports.
@@ -201,6 +205,8 @@ struct prueth_emac {
 	/* RX IRQ Coalescing Related */
 	struct hrtimer rx_hrtimer;
 	unsigned long rx_pace_timeout_ns;
+
+	struct netdev_hw_addr_list vlan_mcast_list[MAX_VLAN_ID];
 };
 
 /**
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 2593019ad5b1..3ee833e9b6f7 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -4689,6 +4689,9 @@ int devm_register_netdev(struct device *dev, struct net_device *ndev);
 /* General hardware address lists handling functions */
 int __hw_addr_sync(struct netdev_hw_addr_list *to_list,
 		   struct netdev_hw_addr_list *from_list, int addr_len);
+int __hw_addr_sync_multiple(struct netdev_hw_addr_list *to_list,
+			    struct netdev_hw_addr_list *from_list,
+			    int addr_len);
 void __hw_addr_unsync(struct netdev_hw_addr_list *to_list,
 		      struct netdev_hw_addr_list *from_list, int addr_len);
 int __hw_addr_sync_dev(struct netdev_hw_addr_list *list,
diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c
index 166e404f7c03..90716bd736f3 100644
--- a/net/core/dev_addr_lists.c
+++ b/net/core/dev_addr_lists.c
@@ -242,9 +242,9 @@ static void __hw_addr_unsync_one(struct netdev_hw_addr_list *to_list,
 	__hw_addr_del_entry(from_list, ha, false, false);
 }
 
-static int __hw_addr_sync_multiple(struct netdev_hw_addr_list *to_list,
-				   struct netdev_hw_addr_list *from_list,
-				   int addr_len)
+int __hw_addr_sync_multiple(struct netdev_hw_addr_list *to_list,
+			    struct netdev_hw_addr_list *from_list,
+			    int addr_len)
 {
 	int err = 0;
 	struct netdev_hw_addr *ha, *tmp;
@@ -260,6 +260,7 @@ static int __hw_addr_sync_multiple(struct netdev_hw_addr_list *to_list,
 	}
 	return err;
 }
+EXPORT_SYMBOL(__hw_addr_sync_multiple);
 
 /* This function only works where there is a strict 1-1 relationship
  * between source and destination of they synch. If you ever need to
-- 
2.34.1

[PATCH net-next v2 3/3] net: ti: icssg-prueth: Add Support for Multicast filtering with VLAN in HSR mode

[MD Danish Anwar]

Add multicast filtering support for VLAN interfaces in HSR offload mode
for ICSSG driver.

The driver calls vlan_for_each() API on the hsr device's ndev to get the
list of available vlans for the hsr device. The driver then sync mc addr of
vlan interface with a locally mainatined list emac->vlan_mcast_list[vid]
using __hw_addr_sync_multiple() API.

The driver then calls the sync / unsync callbacks.

In the sync / unsync call back, driver checks if the vdev's real dev is
hsr device or not. If the real dev is hsr device, driver gets the per
port device using hsr_get_port_ndev() and then driver passes appropriate
vid to FDB helper functions.

This commit makes below changes in the hsr files.
- Move enum hsr_port_type from net/hsr/hsr_main.h to include/linux/if_hsr.h
  so that the enum can be accessed by drivers using hsr.
- Create hsr_get_port_ndev() API that can be used to get the ndev
  pointer to the slave port from ndev pointer to the hsr net device.
- Export hsr_get_port_ndev() API so that the API can be accessed by
  drivers using hsr.

Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
---
 drivers/net/ethernet/ti/icssg/icssg_prueth.c | 83 +++++++++++++++-----
 drivers/net/ethernet/ti/icssg/icssg_prueth.h |  2 +
 include/linux/if_hsr.h                       | 18 +++++
 net/hsr/hsr_device.c                         | 13 +++
 net/hsr/hsr_main.h                           |  9 ---
 5 files changed, 97 insertions(+), 28 deletions(-)

diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
index ed8b5a3184d6..29e0e7a86a7f 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
@@ -515,32 +515,66 @@ static int icssg_prueth_del_mcast(struct net_device *ndev, const u8 *addr)
 	return 0;
 }
 
-static int icssg_prueth_hsr_add_mcast(struct net_device *ndev, const u8 *addr)
+static void icssg_prueth_hsr_fdb_add_del(struct prueth_emac *emac,
+					 const u8 *addr, u8 vid, bool add)
 {
-	struct prueth_emac *emac = netdev_priv(ndev);
-	struct prueth *prueth = emac->prueth;
-
-	icssg_fdb_add_del(emac, addr, prueth->default_vlan,
+	icssg_fdb_add_del(emac, addr, vid,
 			  ICSSG_FDB_ENTRY_P0_MEMBERSHIP |
 			  ICSSG_FDB_ENTRY_P1_MEMBERSHIP |
 			  ICSSG_FDB_ENTRY_P2_MEMBERSHIP |
-			  ICSSG_FDB_ENTRY_BLOCK, true);
+			  ICSSG_FDB_ENTRY_BLOCK, add);
+
+	if (add)
+		icssg_vtbl_modify(emac, vid, BIT(emac->port_id),
+				  BIT(emac->port_id), add);
+}
+
+static int icssg_prueth_hsr_add_mcast(struct net_device *ndev, const u8 *addr)
+{
+	struct net_device *real_dev;
+	struct prueth_emac *emac;
+	u8 vlan_id, i;
+
+	vlan_id = is_vlan_dev(ndev) ? vlan_dev_vlan_id(ndev) : PRUETH_DFLT_VLAN_HSR;
+	real_dev = is_vlan_dev(ndev) ? vlan_dev_real_dev(ndev) : ndev;
+
+	if (is_hsr_master(real_dev)) {
+		for (i = HSR_PT_SLAVE_A; i < HSR_PT_INTERLINK; i++) {
+			emac = netdev_priv(hsr_get_port_ndev(real_dev, i));
+			if (!emac)
+				return -EINVAL;
+			icssg_prueth_hsr_fdb_add_del(emac, addr, vlan_id,
+						     true);
+		}
+	} else {
+		emac = netdev_priv(real_dev);
+		icssg_prueth_hsr_fdb_add_del(emac, addr, vlan_id, true);
+	}
 
-	icssg_vtbl_modify(emac, emac->port_vlan, BIT(emac->port_id),
-			  BIT(emac->port_id), true);
 	return 0;
 }
 
 static int icssg_prueth_hsr_del_mcast(struct net_device *ndev, const u8 *addr)
 {
-	struct prueth_emac *emac = netdev_priv(ndev);
-	struct prueth *prueth = emac->prueth;
+	struct net_device *real_dev;
+	struct prueth_emac *emac;
+	u8 vlan_id, i;
 
-	icssg_fdb_add_del(emac, addr, prueth->default_vlan,
-			  ICSSG_FDB_ENTRY_P0_MEMBERSHIP |
-			  ICSSG_FDB_ENTRY_P1_MEMBERSHIP |
-			  ICSSG_FDB_ENTRY_P2_MEMBERSHIP |
-			  ICSSG_FDB_ENTRY_BLOCK, false);
+	vlan_id = is_vlan_dev(ndev) ? vlan_dev_vlan_id(ndev) : PRUETH_DFLT_VLAN_HSR;
+	real_dev = is_vlan_dev(ndev) ? vlan_dev_real_dev(ndev) : ndev;
+
+	if (is_hsr_master(real_dev)) {
+		for (i = HSR_PT_SLAVE_A; i < HSR_PT_INTERLINK; i++) {
+			emac = netdev_priv(hsr_get_port_ndev(real_dev, i));
+			if (!emac)
+				return -EINVAL;
+			icssg_prueth_hsr_fdb_add_del(emac, addr, vlan_id,
+						     false);
+		}
+	} else {
+		emac = netdev_priv(real_dev);
+		icssg_prueth_hsr_fdb_add_del(emac, addr, vlan_id, false);
+	}
 
 	return 0;
 }
@@ -558,8 +592,14 @@ static int icssg_update_vlan_mcast(struct net_device *vdev, int vid,
 				vdev->addr_len);
 	netif_addr_unlock_bh(vdev);
 
-	__hw_addr_sync_dev(&emac->vlan_mcast_list[vid], vdev,
-			   icssg_prueth_add_mcast, icssg_prueth_del_mcast);
+	if (emac->prueth->is_hsr_offload_mode)
+		__hw_addr_sync_dev(&emac->vlan_mcast_list[vid], vdev,
+				   icssg_prueth_hsr_add_mcast,
+				   icssg_prueth_hsr_del_mcast);
+	else
+		__hw_addr_sync_dev(&emac->vlan_mcast_list[vid], vdev,
+				   icssg_prueth_add_mcast,
+				   icssg_prueth_del_mcast);
 
 	return 0;
 }
@@ -808,6 +848,11 @@ static void emac_ndo_set_rx_mode_work(struct work_struct *work)
 	if (emac->prueth->is_hsr_offload_mode) {
 		__dev_mc_sync(ndev, icssg_prueth_hsr_add_mcast,
 			      icssg_prueth_hsr_del_mcast);
+		if (rtnl_trylock()) {
+			vlan_for_each(emac->prueth->hsr_dev,
+				      icssg_update_vlan_mcast, emac);
+			rtnl_unlock();
+		}
 	} else {
 		__dev_mc_sync(ndev, icssg_prueth_add_mcast,
 			      icssg_prueth_del_mcast);
@@ -1194,7 +1239,7 @@ static int prueth_netdevice_port_link(struct net_device *ndev,
 		if (prueth->br_members & BIT(PRUETH_PORT_MII0) &&
 		    prueth->br_members & BIT(PRUETH_PORT_MII1)) {
 			prueth->is_switch_mode = true;
-			prueth->default_vlan = 1;
+			prueth->default_vlan = PRUETH_DFLT_VLAN_SW;
 			emac->port_vlan = prueth->default_vlan;
 			icssg_change_mode(prueth);
 		}
@@ -1247,7 +1292,7 @@ static int prueth_hsr_port_link(struct net_device *ndev)
 			      NETIF_PRUETH_HSR_OFFLOAD_FEATURES))
 				return -EOPNOTSUPP;
 			prueth->is_hsr_offload_mode = true;
-			prueth->default_vlan = 1;
+			prueth->default_vlan = PRUETH_DFLT_VLAN_HSR;
 			emac0->port_vlan = prueth->default_vlan;
 			emac1->port_vlan = prueth->default_vlan;
 			icssg_change_mode(prueth);
diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
index 4da8b87408b5..956cb59d98b2 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
@@ -84,6 +84,8 @@
 #define ICSS_CMD_ADD_MAC 0x8
 
 /* VLAN Filtering Related MACROs */
+#define PRUETH_DFLT_VLAN_HSR	1
+#define PRUETH_DFLT_VLAN_SW	1
 #define PRUETH_DFLT_VLAN_MAC	0
 #define MAX_VLAN_ID		256
 
diff --git a/include/linux/if_hsr.h b/include/linux/if_hsr.h
index 0404f5bf4f30..0e0bbd6ed082 100644
--- a/include/linux/if_hsr.h
+++ b/include/linux/if_hsr.h
@@ -13,6 +13,15 @@ enum hsr_version {
 	PRP_V1,
 };
 
+enum hsr_port_type {
+	HSR_PT_NONE = 0,	/* Must be 0, used by framereg */
+	HSR_PT_SLAVE_A,
+	HSR_PT_SLAVE_B,
+	HSR_PT_INTERLINK,
+	HSR_PT_MASTER,
+	HSR_PT_PORTS,	/* This must be the last item in the enum */
+};
+
 /* HSR Tag.
  * As defined in IEC-62439-3:2010, the HSR tag is really { ethertype = 0x88FB,
  * path, LSDU_size, sequence Nr }. But we let eth_header() create { h_dest,
@@ -32,6 +41,8 @@ struct hsr_tag {
 #if IS_ENABLED(CONFIG_HSR)
 extern bool is_hsr_master(struct net_device *dev);
 extern int hsr_get_version(struct net_device *dev, enum hsr_version *ver);
+struct net_device *hsr_get_port_ndev(struct net_device *ndev,
+				     enum hsr_port_type pt);
 #else
 static inline bool is_hsr_master(struct net_device *dev)
 {
@@ -42,6 +53,13 @@ static inline int hsr_get_version(struct net_device *dev,
 {
 	return -EINVAL;
 }
+
+static inline struct net_device *hsr_get_port_ndev(struct net_device *ndev,
+						   enum hsr_port_type pt)
+{
+	return ERR_PTR(-EINVAL);
+}
+
 #endif /* CONFIG_HSR */
 
 #endif /*_LINUX_IF_HSR_H_*/
diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c
index 03eadd6c51fd..b6fb18469439 100644
--- a/net/hsr/hsr_device.c
+++ b/net/hsr/hsr_device.c
@@ -663,6 +663,19 @@ bool is_hsr_master(struct net_device *dev)
 }
 EXPORT_SYMBOL(is_hsr_master);
 
+struct net_device *hsr_get_port_ndev(struct net_device *ndev,
+				     enum hsr_port_type pt)
+{
+	struct hsr_priv *hsr = netdev_priv(ndev);
+	struct hsr_port *port;
+
+	hsr_for_each_port(hsr, port)
+		if (port->type == pt)
+			return port->dev;
+	return NULL;
+}
+EXPORT_SYMBOL(hsr_get_port_ndev);
+
 /* Default multicast address for HSR Supervision frames */
 static const unsigned char def_multicast_addr[ETH_ALEN] __aligned(2) = {
 	0x01, 0x15, 0x4e, 0x00, 0x01, 0x00
diff --git a/net/hsr/hsr_main.h b/net/hsr/hsr_main.h
index fcfeb79bb040..db7d88c05b7f 100644
--- a/net/hsr/hsr_main.h
+++ b/net/hsr/hsr_main.h
@@ -121,15 +121,6 @@ struct hsrv1_ethhdr_sp {
 	struct hsr_sup_tag	hsr_sup;
 } __packed;
 
-enum hsr_port_type {
-	HSR_PT_NONE = 0,	/* Must be 0, used by framereg */
-	HSR_PT_SLAVE_A,
-	HSR_PT_SLAVE_B,
-	HSR_PT_INTERLINK,
-	HSR_PT_MASTER,
-	HSR_PT_PORTS,	/* This must be the last item in the enum */
-};
-
 /* PRP Redunancy Control Trailor (RCT).
  * As defined in IEC-62439-4:2012, the PRP RCT is really { sequence Nr,
  * Lan indentifier (LanId), LSDU_size and PRP_suffix = 0x88FB }.
-- 
2.34.1

Re: [PATCH net-next v2 0/3] Add Multicast Filtering support for VLAN interface

[Jakub Kicinski]

On Mon, 23 Dec 2024 14:55:54 +0530 MD Danish Anwar wrote:
> This series adds Multicast filtering support for VLAN interfaces in dual
> EMAC and HSR offload mode for ICSSG driver.
> 
> Patch 1/3 - Adds support for VLAN in dual EMAC mode
> Patch 2/3 - Adds MC filtering support for VLAN in dual EMAC mode
> Patch 3/3 - Adds MC filtering support for VLAN in HSR mode

## Form letter - break

Networking development is suspended for winter holidays, until Jan 2nd.
We are currently accepting bug fixes only, see the announcements at:

https://lore.kernel.org/20241211164022.6a075d3a@kernel.org
https://lore.kernel.org/20241220182851.7acb6416@kernel.org

RFC patches sent for review only are welcome at any time.
-- 
pw-bot: defer
pv-bot: closed