[patch net-next v2 00/13] net: fix netdev to devlink_port linkage and expose to user

[patch net-next v2 00/13] net: fix netdev to devlink_port linkage and expose to user

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

Currently, the info about linkage from netdev to the related
devlink_port instance is done using ndo_get_devlink_port().
This is not sufficient, as it is up to the driver to implement it and
some of them don't do that. Also it leads to a lot of unnecessary
boilerplate code in all the drivers.

Instead of that, introduce a possibility for driver to expose this
relationship by new SET_NETDEV_DEVLINK_PORT macro which stores it into
dev->devlink_port. It is ensured by the driver init/fini flows that
the devlink_port pointer does not change during the netdev lifetime.
Devlink port is always registered before netdev register and
unregistered after netdev unregister.

Benefit from this linkage setup and remove explicit calls from driver
to devlink_port_type_eth_set() and clear(). Many of the driver
didn't use it correctly anyway. Let the devlink.c to track associated
netdev events and adjust type and type pointer accordingly. Also
use this events to to keep track on ifname change and remove RTNL lock
taking from devlink_nl_port_fill().

Finally, remove the ndo_get_devlink_port() ndo which is no longer used
and expose devlink_port handle as a new netdev netlink attribute to the
user. That way, during the ifname->devlink_port lookup, userspace app
does not have to dump whole devlink port list and instead it can just
do a simple RTM_GETLINK query.

---
v1->v2:
- see patches 5 and 6 for changelogs

Jiri Pirko (13):
  net: devlink: convert devlink port type-specific pointers to union
  net: devlink: move port_type_warn_schedule() call to
    __devlink_port_type_set()
  net: devlink: move port_type_netdev_checks() call to
    __devlink_port_type_set()
  net: devlink: take RTNL in port_fill() function only if it is not held
  net: devlink: track netdev with devlink_port assigned
  net: make drivers to use SET_NETDEV_DEVLINK_PORT to set devlink_port
  net: devlink: remove netdev arg from devlink_port_type_eth_set()
  net: devlink: remove net namespace check from devlink_nl_port_fill()
  net: devlink: store copy netdevice ifindex and ifname to allow
    port_fill() without RTNL held
  net: devlink: add not cleared type warning to port unregister
  net: devlink: use devlink_port pointer instead of ndo_get_devlink_port
  net: remove unused ndo_get_devlink_port
  net: expose devlink port over rtnetlink

 drivers/net/ethernet/broadcom/bnxt/bnxt.c     |  14 +-
 .../freescale/dpaa2/dpaa2-eth-devlink.c       |  11 +-
 .../net/ethernet/freescale/dpaa2/dpaa2-eth.c  |   1 +
 .../ethernet/fungible/funeth/funeth_main.c    |  13 +-
 drivers/net/ethernet/intel/ice/ice_devlink.c  |  14 +-
 drivers/net/ethernet/intel/ice/ice_main.c     |  18 +-
 drivers/net/ethernet/intel/ice/ice_repr.c     |  12 +-
 .../marvell/prestera/prestera_devlink.c       |  17 --
 .../marvell/prestera/prestera_devlink.h       |   5 -
 .../ethernet/marvell/prestera/prestera_main.c |   5 +-
 .../net/ethernet/mellanox/mlx4/en_netdev.c    |   9 +-
 drivers/net/ethernet/mellanox/mlx4/main.c     |   2 +-
 .../ethernet/mellanox/mlx5/core/en/devlink.c  |  17 --
 .../ethernet/mellanox/mlx5/core/en/devlink.h  |   2 -
 .../net/ethernet/mellanox/mlx5/core/en_main.c |   4 +-
 .../net/ethernet/mellanox/mlx5/core/en_rep.c  |  43 +---
 drivers/net/ethernet/mellanox/mlxsw/core.c    |  20 +-
 drivers/net/ethernet/mellanox/mlxsw/core.h    |   7 +-
 drivers/net/ethernet/mellanox/mlxsw/minimal.c |  17 +-
 .../net/ethernet/mellanox/mlxsw/spectrum.c    |  16 +-
 drivers/net/ethernet/mscc/ocelot_net.c        |  11 +-
 drivers/net/ethernet/mscc/ocelot_vsc7514.c    |   6 -
 drivers/net/ethernet/netronome/nfp/nfp_app.h  |   2 -
 .../net/ethernet/netronome/nfp/nfp_devlink.c  |  23 +-
 .../ethernet/netronome/nfp/nfp_net_common.c   |   2 -
 .../net/ethernet/netronome/nfp/nfp_net_main.c |  11 +-
 .../net/ethernet/netronome/nfp/nfp_net_repr.c |   1 -
 drivers/net/ethernet/netronome/nfp/nfp_port.h |   2 -
 .../ethernet/pensando/ionic/ionic_devlink.c   |   2 +-
 drivers/net/ethernet/ti/am65-cpsw-nuss.c      |  14 +-
 drivers/net/netdevsim/dev.c                   |   2 -
 drivers/net/netdevsim/netdev.c                |  10 +-
 include/linux/netdevice.h                     |  24 +-
 include/net/devlink.h                         |  32 ++-
 include/uapi/linux/if_link.h                  |   2 +
 net/core/dev.c                                |  11 +-
 net/core/devlink.c                            | 205 +++++++++++++-----
 net/core/net-sysfs.c                          |   4 +-
 net/core/rtnetlink.c                          |  39 ++++
 net/dsa/dsa2.c                                |   9 -
 net/dsa/slave.c                               |   9 +-
 net/ethtool/ioctl.c                           |  11 +-
 42 files changed, 292 insertions(+), 387 deletions(-)

-- 
2.37.1

[patch net-next v2 01/13] net: devlink: convert devlink port type-specific pointers to union

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

Instead of storing type_dev as a void pointer, convert it to union and
use it to store either struct net_device or struct ib_device pointer.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
 include/net/devlink.h | 13 ++++++++++---
 net/core/devlink.c    | 17 +++++++++++++----
 2 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/include/net/devlink.h b/include/net/devlink.h
index ba6b8b094943..6c55aabaedf1 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -121,12 +121,19 @@ struct devlink_port {
 	struct list_head region_list;
 	struct devlink *devlink;
 	unsigned int index;
-	spinlock_t type_lock; /* Protects type and type_dev
-			       * pointer consistency.
+	spinlock_t type_lock; /* Protects type and type_eth/ib
+			       * structures consistency.
 			       */
 	enum devlink_port_type type;
 	enum devlink_port_type desired_type;
-	void *type_dev;
+	union {
+		struct {
+			struct net_device *netdev;
+		} type_eth;
+		struct {
+			struct ib_device *ibdev;
+		} type_ib;
+	};
 	struct devlink_port_attrs attrs;
 	u8 attrs_set:1,
 	   switch_port:1,
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 89baa7c0938b..7e7645ae3d89 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -1303,7 +1303,7 @@ static int devlink_nl_port_fill(struct sk_buff *msg,
 		goto nla_put_failure_type_locked;
 	if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
 		struct net *net = devlink_net(devlink_port->devlink);
-		struct net_device *netdev = devlink_port->type_dev;
+		struct net_device *netdev = devlink_port->type_eth.netdev;
 
 		if (netdev && net_eq(net, dev_net(netdev)) &&
 		    (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
@@ -1313,7 +1313,7 @@ static int devlink_nl_port_fill(struct sk_buff *msg,
 			goto nla_put_failure_type_locked;
 	}
 	if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
-		struct ib_device *ibdev = devlink_port->type_dev;
+		struct ib_device *ibdev = devlink_port->type_ib.ibdev;
 
 		if (ibdev &&
 		    nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
@@ -10003,7 +10003,16 @@ static void __devlink_port_type_set(struct devlink_port *devlink_port,
 	devlink_port_type_warn_cancel(devlink_port);
 	spin_lock_bh(&devlink_port->type_lock);
 	devlink_port->type = type;
-	devlink_port->type_dev = type_dev;
+	switch (type) {
+	case DEVLINK_PORT_TYPE_ETH:
+		devlink_port->type_eth.netdev = type_dev;
+		break;
+	case DEVLINK_PORT_TYPE_IB:
+		devlink_port->type_ib.ibdev = type_dev;
+		break;
+	default:
+		break;
+	}
 	spin_unlock_bh(&devlink_port->type_lock);
 	devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
 }
@@ -12016,7 +12025,7 @@ devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata,
 
 	spin_lock(&in_devlink_port->type_lock);
 	if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
-		metadata->input_dev = in_devlink_port->type_dev;
+		metadata->input_dev = in_devlink_port->type_eth.netdev;
 	spin_unlock(&in_devlink_port->type_lock);
 }
 
-- 
2.37.1

[patch net-next v2 02/13] net: devlink: move port_type_warn_schedule() call to __devlink_port_type_set()

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

As __devlink_port_type_set() is going to be called directly from netdevice
notifier event handle in one of the follow-up patches, move the
port_type_warn_schedule() call there.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
 net/core/devlink.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/net/core/devlink.c b/net/core/devlink.c
index 7e7645ae3d89..218cb1cdb50e 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -10000,7 +10000,11 @@ static void __devlink_port_type_set(struct devlink_port *devlink_port,
 {
 	ASSERT_DEVLINK_PORT_REGISTERED(devlink_port);
 
-	devlink_port_type_warn_cancel(devlink_port);
+	if (type == DEVLINK_PORT_TYPE_NOTSET)
+		devlink_port_type_warn_schedule(devlink_port);
+	else
+		devlink_port_type_warn_cancel(devlink_port);
+
 	spin_lock_bh(&devlink_port->type_lock);
 	devlink_port->type = type;
 	switch (type) {
@@ -10095,7 +10099,6 @@ EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
 void devlink_port_type_clear(struct devlink_port *devlink_port)
 {
 	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
-	devlink_port_type_warn_schedule(devlink_port);
 }
 EXPORT_SYMBOL_GPL(devlink_port_type_clear);
 
-- 
2.37.1

[patch net-next v2 03/13] net: devlink: move port_type_netdev_checks() call to __devlink_port_type_set()

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

As __devlink_port_type_set() is going to be called directly from netdevice
notifier event handle in one of the follow-up patches, move the
port_type_netdev_checks() call there.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
 net/core/devlink.c | 63 ++++++++++++++++++++++++----------------------
 1 file changed, 33 insertions(+), 30 deletions(-)

diff --git a/net/core/devlink.c b/net/core/devlink.c
index 218cb1cdb50e..e49ec10d613f 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -9994,33 +9994,6 @@ void devlink_port_unregister(struct devlink_port *devlink_port)
 }
 EXPORT_SYMBOL_GPL(devlink_port_unregister);
 
-static void __devlink_port_type_set(struct devlink_port *devlink_port,
-				    enum devlink_port_type type,
-				    void *type_dev)
-{
-	ASSERT_DEVLINK_PORT_REGISTERED(devlink_port);
-
-	if (type == DEVLINK_PORT_TYPE_NOTSET)
-		devlink_port_type_warn_schedule(devlink_port);
-	else
-		devlink_port_type_warn_cancel(devlink_port);
-
-	spin_lock_bh(&devlink_port->type_lock);
-	devlink_port->type = type;
-	switch (type) {
-	case DEVLINK_PORT_TYPE_ETH:
-		devlink_port->type_eth.netdev = type_dev;
-		break;
-	case DEVLINK_PORT_TYPE_IB:
-		devlink_port->type_ib.ibdev = type_dev;
-		break;
-	default:
-		break;
-	}
-	spin_unlock_bh(&devlink_port->type_lock);
-	devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
-}
-
 static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
 					    struct net_device *netdev)
 {
@@ -10058,6 +10031,38 @@ static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
 	}
 }
 
+static void __devlink_port_type_set(struct devlink_port *devlink_port,
+				    enum devlink_port_type type,
+				    void *type_dev)
+{
+	struct net_device *netdev = type_dev;
+
+	ASSERT_DEVLINK_PORT_REGISTERED(devlink_port);
+
+	if (type == DEVLINK_PORT_TYPE_NOTSET) {
+		devlink_port_type_warn_schedule(devlink_port);
+	} else {
+		devlink_port_type_warn_cancel(devlink_port);
+		if (type == DEVLINK_PORT_TYPE_ETH && netdev)
+			devlink_port_type_netdev_checks(devlink_port, netdev);
+	}
+
+	spin_lock_bh(&devlink_port->type_lock);
+	devlink_port->type = type;
+	switch (type) {
+	case DEVLINK_PORT_TYPE_ETH:
+		devlink_port->type_eth.netdev = netdev;
+		break;
+	case DEVLINK_PORT_TYPE_IB:
+		devlink_port->type_ib.ibdev = type_dev;
+		break;
+	default:
+		break;
+	}
+	spin_unlock_bh(&devlink_port->type_lock);
+	devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+}
+
 /**
  *	devlink_port_type_eth_set - Set port type to Ethernet
  *
@@ -10067,9 +10072,7 @@ static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
 void devlink_port_type_eth_set(struct devlink_port *devlink_port,
 			       struct net_device *netdev)
 {
-	if (netdev)
-		devlink_port_type_netdev_checks(devlink_port, netdev);
-	else
+	if (!netdev)
 		dev_warn(devlink_port->devlink->dev,
 			 "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
 			 devlink_port->index);
-- 
2.37.1

[patch net-next v2 04/13] net: devlink: take RTNL in port_fill() function only if it is not held

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

Follow-up patch is going to introduce a netdevice notifier event
processing which is called with RTNL mutex held. Processing of this will
eventually lead to call to port_notity() and port_fill() which currently
takes RTNL mutex internally. So as a temporary solution, propagate a
bool indicating if the mutex is already held. This will go away in one
of the follow-up patches.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
 net/core/devlink.c | 46 +++++++++++++++++++++++++++++++---------------
 1 file changed, 31 insertions(+), 15 deletions(-)

diff --git a/net/core/devlink.c b/net/core/devlink.c
index e49ec10d613f..ee14520d4690 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -1278,7 +1278,8 @@ devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *por
 static int devlink_nl_port_fill(struct sk_buff *msg,
 				struct devlink_port *devlink_port,
 				enum devlink_command cmd, u32 portid, u32 seq,
-				int flags, struct netlink_ext_ack *extack)
+				int flags, struct netlink_ext_ack *extack,
+				bool rtnl_held)
 {
 	struct devlink *devlink = devlink_port->devlink;
 	void *hdr;
@@ -1293,7 +1294,8 @@ static int devlink_nl_port_fill(struct sk_buff *msg,
 		goto nla_put_failure;
 
 	/* Hold rtnl lock while accessing port's netdev attributes. */
-	rtnl_lock();
+	if (!rtnl_held)
+		rtnl_lock();
 	spin_lock_bh(&devlink_port->type_lock);
 	if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
 		goto nla_put_failure_type_locked;
@@ -1321,7 +1323,8 @@ static int devlink_nl_port_fill(struct sk_buff *msg,
 			goto nla_put_failure_type_locked;
 	}
 	spin_unlock_bh(&devlink_port->type_lock);
-	rtnl_unlock();
+	if (!rtnl_held)
+		rtnl_unlock();
 	if (devlink_nl_port_attrs_put(msg, devlink_port))
 		goto nla_put_failure;
 	if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
@@ -1336,14 +1339,15 @@ static int devlink_nl_port_fill(struct sk_buff *msg,
 
 nla_put_failure_type_locked:
 	spin_unlock_bh(&devlink_port->type_lock);
-	rtnl_unlock();
+	if (!rtnl_held)
+		rtnl_unlock();
 nla_put_failure:
 	genlmsg_cancel(msg, hdr);
 	return -EMSGSIZE;
 }
 
-static void devlink_port_notify(struct devlink_port *devlink_port,
-				enum devlink_command cmd)
+static void __devlink_port_notify(struct devlink_port *devlink_port,
+				  enum devlink_command cmd, bool rtnl_held)
 {
 	struct devlink *devlink = devlink_port->devlink;
 	struct sk_buff *msg;
@@ -1358,7 +1362,8 @@ static void devlink_port_notify(struct devlink_port *devlink_port,
 	if (!msg)
 		return;
 
-	err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL);
+	err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL,
+				   rtnl_held);
 	if (err) {
 		nlmsg_free(msg);
 		return;
@@ -1368,6 +1373,12 @@ static void devlink_port_notify(struct devlink_port *devlink_port,
 				0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
 }
 
+static void devlink_port_notify(struct devlink_port *devlink_port,
+				enum devlink_command cmd)
+{
+	__devlink_port_notify(devlink_port, cmd, false);
+}
+
 static void devlink_rate_notify(struct devlink_rate *devlink_rate,
 				enum devlink_command cmd)
 {
@@ -1531,7 +1542,7 @@ static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
 
 	err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW,
 				   info->snd_portid, info->snd_seq, 0,
-				   info->extack);
+				   info->extack, false);
 	if (err) {
 		nlmsg_free(msg);
 		return err;
@@ -1561,7 +1572,8 @@ static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
 						   DEVLINK_CMD_NEW,
 						   NETLINK_CB(cb->skb).portid,
 						   cb->nlh->nlmsg_seq,
-						   NLM_F_MULTI, cb->extack);
+						   NLM_F_MULTI, cb->extack,
+						   false);
 			if (err) {
 				devl_unlock(devlink);
 				devlink_put(devlink);
@@ -1773,7 +1785,8 @@ static int devlink_port_new_notify(struct devlink *devlink,
 	}
 
 	err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
-				   info->snd_portid, info->snd_seq, 0, NULL);
+				   info->snd_portid, info->snd_seq, 0, NULL,
+				   false);
 	if (err)
 		goto out;
 
@@ -10033,7 +10046,7 @@ static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
 
 static void __devlink_port_type_set(struct devlink_port *devlink_port,
 				    enum devlink_port_type type,
-				    void *type_dev)
+				    void *type_dev, bool rtnl_held)
 {
 	struct net_device *netdev = type_dev;
 
@@ -10060,7 +10073,7 @@ static void __devlink_port_type_set(struct devlink_port *devlink_port,
 		break;
 	}
 	spin_unlock_bh(&devlink_port->type_lock);
-	devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+	__devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW, rtnl_held);
 }
 
 /**
@@ -10077,7 +10090,8 @@ void devlink_port_type_eth_set(struct devlink_port *devlink_port,
 			 "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
 			 devlink_port->index);
 
-	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
+	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev,
+				false);
 }
 EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
 
@@ -10090,7 +10104,8 @@ EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
 			      struct ib_device *ibdev)
 {
-	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
+	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev,
+				false);
 }
 EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
 
@@ -10101,7 +10116,8 @@ EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
  */
 void devlink_port_type_clear(struct devlink_port *devlink_port)
 {
-	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
+	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL,
+				false);
 }
 EXPORT_SYMBOL_GPL(devlink_port_type_clear);
 
-- 
2.37.1

[patch net-next v2 05/13] net: devlink: track netdev with devlink_port assigned

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

Currently, ethernet drivers are using devlink_port_type_eth_set() and
devlink_port_type_clear() to set devlink port type and link to related
netdev.

Instead of calling them directly, let the driver use
SET_NETDEV_DEVLINK_PORT macro to assign devlink_port pointer and let
devlink to track it. Note the devlink port pointer is static during
the time netdevice is registered.

In devlink code, use per-namespace netdev notifier to track
the netdevices with devlink_port assigned and change the internal
devlink_port type and related type pointer accordingly.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
v1->v2:
- added kdoc for devlink_port struct field
---
 include/linux/netdevice.h | 19 ++++++++++
 net/core/dev.c            | 11 +++---
 net/core/devlink.c        | 75 ++++++++++++++++++++++++++++++++++++---
 3 files changed, 97 insertions(+), 8 deletions(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index eddf8ee270e7..bbb93be49063 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1999,6 +1999,11 @@ enum netdev_ml_priv_type {
  *					registered
  *	@offload_xstats_l3:	L3 HW stats for this netdevice.
  *
+ *	@devlink_port:	Pointer to related devlink port structure.
+ *			Assigned by a driver before netdev registration using
+ *			SET_NETDEV_DEVLINK_PORT macro. This pointer is static
+ *			during the time netdevice is registered.
+ *
  *	FIXME: cleanup struct net_device such that network protocol info
  *	moves out.
  */
@@ -2349,9 +2354,22 @@ struct net_device {
 	netdevice_tracker	watchdog_dev_tracker;
 	netdevice_tracker	dev_registered_tracker;
 	struct rtnl_hw_stats64	*offload_xstats_l3;
+
+	struct devlink_port	*devlink_port;
 };
 #define to_net_dev(d) container_of(d, struct net_device, dev)
 
+/*
+ * Driver should use this to assign devlink port instance to a netdevice
+ * before it registers the netdevice. Therefore devlink_port is static
+ * during the netdev lifetime after it is registered.
+ */
+#define SET_NETDEV_DEVLINK_PORT(dev, _devlink_port)		\
+({								\
+	WARN_ON(dev->reg_state != NETREG_UNINITIALIZED);	\
+	((dev)->devlink_port = (_devlink_port));		\
+})
+
 static inline bool netif_elide_gro(const struct net_device *dev)
 {
 	if (!(dev->features & NETIF_F_GRO) || dev->xdp_prog)
@@ -2785,6 +2803,7 @@ enum netdev_cmd {
 	NETDEV_PRE_TYPE_CHANGE,
 	NETDEV_POST_TYPE_CHANGE,
 	NETDEV_POST_INIT,
+	NETDEV_PRE_UNINIT,
 	NETDEV_RELEASE,
 	NETDEV_NOTIFY_PEERS,
 	NETDEV_JOIN,
diff --git a/net/core/dev.c b/net/core/dev.c
index fa53830d0683..1b45aa5c976e 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1621,10 +1621,10 @@ const char *netdev_cmd_to_name(enum netdev_cmd cmd)
 	N(UP) N(DOWN) N(REBOOT) N(CHANGE) N(REGISTER) N(UNREGISTER)
 	N(CHANGEMTU) N(CHANGEADDR) N(GOING_DOWN) N(CHANGENAME) N(FEAT_CHANGE)
 	N(BONDING_FAILOVER) N(PRE_UP) N(PRE_TYPE_CHANGE) N(POST_TYPE_CHANGE)
-	N(POST_INIT) N(RELEASE) N(NOTIFY_PEERS) N(JOIN) N(CHANGEUPPER)
-	N(RESEND_IGMP) N(PRECHANGEMTU) N(CHANGEINFODATA) N(BONDING_INFO)
-	N(PRECHANGEUPPER) N(CHANGELOWERSTATE) N(UDP_TUNNEL_PUSH_INFO)
-	N(UDP_TUNNEL_DROP_INFO) N(CHANGE_TX_QUEUE_LEN)
+	N(POST_INIT) N(PRE_UNINIT) N(RELEASE) N(NOTIFY_PEERS) N(JOIN)
+	N(CHANGEUPPER) N(RESEND_IGMP) N(PRECHANGEMTU) N(CHANGEINFODATA)
+	N(BONDING_INFO) N(PRECHANGEUPPER) N(CHANGELOWERSTATE)
+	N(UDP_TUNNEL_PUSH_INFO) N(UDP_TUNNEL_DROP_INFO) N(CHANGE_TX_QUEUE_LEN)
 	N(CVLAN_FILTER_PUSH_INFO) N(CVLAN_FILTER_DROP_INFO)
 	N(SVLAN_FILTER_PUSH_INFO) N(SVLAN_FILTER_DROP_INFO)
 	N(PRE_CHANGEADDR) N(OFFLOAD_XSTATS_ENABLE) N(OFFLOAD_XSTATS_DISABLE)
@@ -10103,6 +10103,7 @@ int register_netdevice(struct net_device *dev)
 	return ret;
 
 err_uninit:
+	call_netdevice_notifiers(NETDEV_PRE_UNINIT, dev);
 	if (dev->netdev_ops->ndo_uninit)
 		dev->netdev_ops->ndo_uninit(dev);
 	if (dev->priv_destructor)
@@ -10856,6 +10857,8 @@ void unregister_netdevice_many(struct list_head *head)
 		netdev_name_node_alt_flush(dev);
 		netdev_name_node_free(dev->name_node);
 
+		call_netdevice_notifiers(NETDEV_PRE_UNINIT, dev);
+
 		if (dev->netdev_ops->ndo_uninit)
 			dev->netdev_ops->ndo_uninit(dev);
 
diff --git a/net/core/devlink.c b/net/core/devlink.c
index ee14520d4690..87aa39bc481e 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -71,6 +71,7 @@ struct devlink {
 	refcount_t refcount;
 	struct completion comp;
 	struct rcu_head rcu;
+	struct notifier_block netdevice_nb;
 	char priv[] __aligned(NETDEV_ALIGN);
 };
 
@@ -9615,6 +9616,9 @@ void devlink_set_features(struct devlink *devlink, u64 features)
 }
 EXPORT_SYMBOL_GPL(devlink_set_features);
 
+static int devlink_netdevice_event(struct notifier_block *nb,
+				   unsigned long event, void *ptr);
+
 /**
  *	devlink_alloc_ns - Allocate new devlink instance resources
  *	in specific namespace
@@ -9645,10 +9649,13 @@ struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
 
 	ret = xa_alloc_cyclic(&devlinks, &devlink->index, devlink, xa_limit_31b,
 			      &last_id, GFP_KERNEL);
-	if (ret < 0) {
-		kfree(devlink);
-		return NULL;
-	}
+	if (ret < 0)
+		goto err_xa_alloc;
+
+	devlink->netdevice_nb.notifier_call = devlink_netdevice_event;
+	ret = register_netdevice_notifier_net(net, &devlink->netdevice_nb);
+	if (ret)
+		goto err_register_netdevice_notifier;
 
 	devlink->dev = dev;
 	devlink->ops = ops;
@@ -9675,6 +9682,12 @@ struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
 	init_completion(&devlink->comp);
 
 	return devlink;
+
+err_register_netdevice_notifier:
+	xa_erase(&devlinks, devlink->index);
+err_xa_alloc:
+	kfree(devlink);
+	return NULL;
 }
 EXPORT_SYMBOL_GPL(devlink_alloc_ns);
 
@@ -9828,6 +9841,10 @@ void devlink_free(struct devlink *devlink)
 	WARN_ON(!list_empty(&devlink->port_list));
 
 	xa_destroy(&devlink->snapshot_ids);
+
+	unregister_netdevice_notifier_net(devlink_net(devlink),
+					  &devlink->netdevice_nb);
+
 	xa_erase(&devlinks, devlink->index);
 
 	kfree(devlink);
@@ -10121,6 +10138,56 @@ void devlink_port_type_clear(struct devlink_port *devlink_port)
 }
 EXPORT_SYMBOL_GPL(devlink_port_type_clear);
 
+static int devlink_netdevice_event(struct notifier_block *nb,
+				   unsigned long event, void *ptr)
+{
+	struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
+	struct devlink_port *devlink_port = netdev->devlink_port;
+	struct devlink *devlink;
+
+	devlink = container_of(nb, struct devlink, netdevice_nb);
+
+	if (!devlink_port || devlink_port->devlink != devlink)
+		return NOTIFY_OK;
+
+	switch (event) {
+	case NETDEV_POST_INIT:
+		/* Set the type but not netdev pointer. It is going to be set
+		 * later on by NETDEV_REGISTER event. Happens once during
+		 * netdevice register
+		 */
+		__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH,
+					NULL, true);
+		break;
+	case NETDEV_REGISTER:
+		/* Set the netdev on top of previously set type. Note this
+		 * event happens also during net namespace change so here
+		 * we take into account netdev pointer appearing in this
+		 * namespace.
+		 */
+		__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH,
+					netdev, true);
+		break;
+	case NETDEV_UNREGISTER:
+		/* Clear netdev pointer, but not the type. This event happens
+		 * also during net namespace change so we need to clear
+		 * pointer to netdev that is going to another net namespace.
+		 */
+		__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH,
+					NULL, true);
+		break;
+	case NETDEV_PRE_UNINIT:
+		/* Clear the type and the netdev pointer. Happens one during
+		 * netdevice unregister.
+		 */
+		__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET,
+					NULL, true);
+		break;
+	}
+
+	return NOTIFY_OK;
+}
+
 static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
 				    enum devlink_port_flavour flavour)
 {
-- 
2.37.1

[patch net-next v2 06/13] net: make drivers to use SET_NETDEV_DEVLINK_PORT to set devlink_port

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

Benefit from the previously implemented tracking of netdev events in
devlink code and instead of calling  devlink_port_type_eth_set() and
devlink_port_type_clear() to set devlink port type and link to related
netdev, use SET_NETDEV_DEVLINK_PORT() macro to assign devlink_port
pointer to netdevice which is about to be registered.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
v1->v2:
- moved call to mlxsw_core_port_netdev_link() in spectrum.c and
  minimal.c to work with initialized value
- removed couple of no longer used variables from ocelot_vsc7514.c
- removed no londer used variable dev from
  mlx5e_vport_uplink_rep_unload()
- fixed over 80 cols warning in mlxsw/core.h
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c     |  6 +---
 .../freescale/dpaa2/dpaa2-eth-devlink.c       | 11 +------
 .../net/ethernet/freescale/dpaa2/dpaa2-eth.c  |  1 +
 .../ethernet/fungible/funeth/funeth_main.c    |  5 +--
 drivers/net/ethernet/intel/ice/ice_devlink.c  | 14 ++------
 drivers/net/ethernet/intel/ice/ice_main.c     |  3 +-
 drivers/net/ethernet/intel/ice/ice_repr.c     |  3 +-
 .../marvell/prestera/prestera_devlink.c       | 10 ------
 .../marvell/prestera/prestera_devlink.h       |  3 --
 .../ethernet/marvell/prestera/prestera_main.c |  4 +--
 .../net/ethernet/mellanox/mlx4/en_netdev.c    |  9 ++---
 .../ethernet/mellanox/mlx5/core/en/devlink.c  |  7 ----
 .../ethernet/mellanox/mlx5/core/en/devlink.h  |  1 -
 .../net/ethernet/mellanox/mlx5/core/en_main.c |  3 +-
 .../net/ethernet/mellanox/mlx5/core/en_rep.c  | 33 ++++---------------
 drivers/net/ethernet/mellanox/mlxsw/core.c    | 20 +++--------
 drivers/net/ethernet/mellanox/mlxsw/core.h    |  7 ++--
 drivers/net/ethernet/mellanox/mlxsw/minimal.c |  6 ++--
 .../net/ethernet/mellanox/mlxsw/spectrum.c    |  5 ++-
 drivers/net/ethernet/mscc/ocelot_net.c        |  1 +
 drivers/net/ethernet/mscc/ocelot_vsc7514.c    |  6 ----
 .../net/ethernet/netronome/nfp/nfp_devlink.c  | 12 ++-----
 .../net/ethernet/netronome/nfp/nfp_net_main.c | 11 ++-----
 drivers/net/ethernet/netronome/nfp/nfp_port.h |  2 --
 .../ethernet/pensando/ionic/ionic_devlink.c   |  2 +-
 drivers/net/ethernet/ti/am65-cpsw-nuss.c      |  6 ++--
 drivers/net/netdevsim/dev.c                   |  2 --
 drivers/net/netdevsim/netdev.c                |  1 +
 net/dsa/dsa2.c                                |  9 -----
 net/dsa/slave.c                               |  1 +
 30 files changed, 40 insertions(+), 164 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index eed98c10ca9d..59d211fb01ba 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -13122,9 +13122,6 @@ static void bnxt_remove_one(struct pci_dev *pdev)
 	if (BNXT_PF(bp))
 		bnxt_sriov_disable(bp);
 
-	if (BNXT_PF(bp))
-		devlink_port_type_clear(&bp->dl_port);
-
 	bnxt_ptp_clear(bp);
 	pci_disable_pcie_error_reporting(pdev);
 	unregister_netdev(dev);
@@ -13537,6 +13534,7 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		return -ENOMEM;
 
 	bp = netdev_priv(dev);
+	SET_NETDEV_DEVLINK_PORT(dev, &bp->dl_port);
 	bp->board_idx = ent->driver_data;
 	bp->msg_enable = BNXT_DEF_MSG_ENABLE;
 	bnxt_set_max_func_irqs(bp, max_irqs);
@@ -13712,8 +13710,6 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (rc)
 		goto init_err_cleanup;
 
-	if (BNXT_PF(bp))
-		devlink_port_type_eth_set(&bp->dl_port, bp->dev);
 	bnxt_dl_fw_reporters_create(bp);
 
 	bnxt_print_device_info(bp);
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c
index 7fefe1574b6a..5c6dd3029e2f 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c
@@ -226,25 +226,16 @@ int dpaa2_eth_dl_port_add(struct dpaa2_eth_priv *priv)
 {
 	struct devlink_port *devlink_port = &priv->devlink_port;
 	struct devlink_port_attrs attrs = {};
-	int err;
 
 	attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
 	devlink_port_attrs_set(devlink_port, &attrs);
-
-	err = devlink_port_register(priv->devlink, devlink_port, 0);
-	if (err)
-		return err;
-
-	devlink_port_type_eth_set(devlink_port, priv->net_dev);
-
-	return 0;
+	return devlink_port_register(priv->devlink, devlink_port, 0);
 }
 
 void dpaa2_eth_dl_port_del(struct dpaa2_eth_priv *priv)
 {
 	struct devlink_port *devlink_port = &priv->devlink_port;
 
-	devlink_port_type_clear(devlink_port);
 	devlink_port_unregister(devlink_port);
 }
 
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
index 8d029addddad..d86182fcd832 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -4601,6 +4601,7 @@ static int dpaa2_eth_probe(struct fsl_mc_device *dpni_dev)
 
 	priv = netdev_priv(net_dev);
 	priv->net_dev = net_dev;
+	SET_NETDEV_DEVLINK_PORT(net_dev, &priv->devlink_port);
 
 	priv->iommu_domain = iommu_get_domain_for_dev(dev);
 
diff --git a/drivers/net/ethernet/fungible/funeth/funeth_main.c b/drivers/net/ethernet/fungible/funeth/funeth_main.c
index 095f51c4d9d9..208dc89f4972 100644
--- a/drivers/net/ethernet/fungible/funeth/funeth_main.c
+++ b/drivers/net/ethernet/fungible/funeth/funeth_main.c
@@ -1760,6 +1760,7 @@ static int fun_create_netdev(struct fun_ethdev *ed, unsigned int portid)
 		goto free_rss;
 
 	SET_NETDEV_DEV(netdev, fdev->dev);
+	SET_NETDEV_DEVLINK_PORT(netdev, &fp->dl_port);
 	netdev->netdev_ops = &fun_netdev_ops;
 
 	netdev->hw_features = NETIF_F_SG | NETIF_F_RXHASH | NETIF_F_RXCSUM;
@@ -1800,9 +1801,6 @@ static int fun_create_netdev(struct fun_ethdev *ed, unsigned int portid)
 	rc = register_netdev(netdev);
 	if (rc)
 		goto unreg_devlink;
-
-	devlink_port_type_eth_set(&fp->dl_port, netdev);
-
 	return 0;
 
 unreg_devlink:
@@ -1827,7 +1825,6 @@ static void fun_destroy_netdev(struct net_device *netdev)
 	struct funeth_priv *fp;
 
 	fp = netdev_priv(netdev);
-	devlink_port_type_clear(&fp->dl_port);
 	unregister_netdev(netdev);
 	devlink_port_unregister(&fp->dl_port);
 	fun_ktls_cleanup(fp);
diff --git a/drivers/net/ethernet/intel/ice/ice_devlink.c b/drivers/net/ethernet/intel/ice/ice_devlink.c
index e6ec20079ced..455489e9457d 100644
--- a/drivers/net/ethernet/intel/ice/ice_devlink.c
+++ b/drivers/net/ethernet/intel/ice/ice_devlink.c
@@ -1033,12 +1033,7 @@ int ice_devlink_create_pf_port(struct ice_pf *pf)
  */
 void ice_devlink_destroy_pf_port(struct ice_pf *pf)
 {
-	struct devlink_port *devlink_port;
-
-	devlink_port = &pf->devlink_port;
-
-	devlink_port_type_clear(devlink_port);
-	devlink_port_unregister(devlink_port);
+	devlink_port_unregister(&pf->devlink_port);
 }
 
 /**
@@ -1094,12 +1089,7 @@ int ice_devlink_create_vf_port(struct ice_vf *vf)
  */
 void ice_devlink_destroy_vf_port(struct ice_vf *vf)
 {
-	struct devlink_port *devlink_port;
-
-	devlink_port = &vf->devlink_port;
-
-	devlink_port_type_clear(devlink_port);
-	devlink_port_unregister(devlink_port);
+	devlink_port_unregister(&vf->devlink_port);
 }
 
 #define ICE_DEVLINK_READ_BLK_SIZE (1024 * 1024)
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 0f6718719453..a4d5a6969f10 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -4603,6 +4603,7 @@ static int ice_register_netdev(struct ice_pf *pf)
 	if (err)
 		goto err_devlink_create;
 
+	SET_NETDEV_DEVLINK_PORT(vsi->netdev, &pf->devlink_port);
 	err = register_netdev(vsi->netdev);
 	if (err)
 		goto err_register_netdev;
@@ -4611,8 +4612,6 @@ static int ice_register_netdev(struct ice_pf *pf)
 	netif_carrier_off(vsi->netdev);
 	netif_tx_stop_all_queues(vsi->netdev);
 
-	devlink_port_type_eth_set(&pf->devlink_port, vsi->netdev);
-
 	return 0;
 err_register_netdev:
 	ice_devlink_destroy_pf_port(pf);
diff --git a/drivers/net/ethernet/intel/ice/ice_repr.c b/drivers/net/ethernet/intel/ice/ice_repr.c
index bd31748aae1b..663a7a0e1814 100644
--- a/drivers/net/ethernet/intel/ice/ice_repr.c
+++ b/drivers/net/ethernet/intel/ice/ice_repr.c
@@ -339,12 +339,11 @@ static int ice_repr_add(struct ice_vf *vf)
 	repr->netdev->max_mtu = ICE_MAX_MTU;
 
 	SET_NETDEV_DEV(repr->netdev, ice_pf_to_dev(vf->pf));
+	SET_NETDEV_DEVLINK_PORT(repr->netdev, &vf->devlink_port);
 	err = ice_repr_reg_netdev(repr->netdev);
 	if (err)
 		goto err_netdev;
 
-	devlink_port_type_eth_set(&vf->devlink_port, repr->netdev);
-
 	ice_virtchnl_set_repr_ops(vf);
 
 	return 0;
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_devlink.c b/drivers/net/ethernet/marvell/prestera/prestera_devlink.c
index 06279cd6da67..637b8fee65e7 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_devlink.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_devlink.c
@@ -445,16 +445,6 @@ void prestera_devlink_port_unregister(struct prestera_port *port)
 	devlink_port_unregister(&port->dl_port);
 }
 
-void prestera_devlink_port_set(struct prestera_port *port)
-{
-	devlink_port_type_eth_set(&port->dl_port, port->dev);
-}
-
-void prestera_devlink_port_clear(struct prestera_port *port)
-{
-	devlink_port_type_clear(&port->dl_port);
-}
-
 struct devlink_port *prestera_devlink_get_port(struct net_device *dev)
 {
 	struct prestera_port *port = netdev_priv(dev);
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_devlink.h b/drivers/net/ethernet/marvell/prestera/prestera_devlink.h
index b322295bad3a..04e8556f748a 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_devlink.h
+++ b/drivers/net/ethernet/marvell/prestera/prestera_devlink.h
@@ -15,9 +15,6 @@ void prestera_devlink_unregister(struct prestera_switch *sw);
 int prestera_devlink_port_register(struct prestera_port *port);
 void prestera_devlink_port_unregister(struct prestera_port *port);
 
-void prestera_devlink_port_set(struct prestera_port *port);
-void prestera_devlink_port_clear(struct prestera_port *port);
-
 struct devlink_port *prestera_devlink_get_port(struct net_device *dev);
 
 void prestera_devlink_trap_report(struct prestera_port *port,
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_main.c b/drivers/net/ethernet/marvell/prestera/prestera_main.c
index 639d3e940a88..18fefb27a356 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_main.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_main.c
@@ -633,6 +633,7 @@ static int prestera_port_create(struct prestera_switch *sw, u32 id)
 	dev->netdev_ops = &prestera_netdev_ops;
 	dev->ethtool_ops = &prestera_ethtool_ops;
 	SET_NETDEV_DEV(dev, sw->dev->dev);
+	SET_NETDEV_DEVLINK_PORT(dev, &port->dl_port);
 
 	if (port->caps.transceiver != PRESTERA_PORT_TCVR_SFP)
 		netif_carrier_off(dev);
@@ -726,8 +727,6 @@ static int prestera_port_create(struct prestera_switch *sw, u32 id)
 	if (err)
 		goto err_register_netdev;
 
-	prestera_devlink_port_set(port);
-
 	err = prestera_port_sfp_bind(port);
 	if (err)
 		goto err_sfp_bind;
@@ -750,7 +749,6 @@ static void prestera_port_destroy(struct prestera_port *port)
 	struct net_device *dev = port->dev;
 
 	cancel_delayed_work_sync(&port->cached_hw_stats.caching_dw);
-	prestera_devlink_port_clear(port);
 	unregister_netdev(dev);
 	prestera_port_list_del(port);
 	prestera_devlink_port_unregister(port);
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index ca4b93a01034..8800d3f1f55c 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -2337,11 +2337,8 @@ void mlx4_en_destroy_netdev(struct net_device *dev)
 	en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
 
 	/* Unregister device - this will close the port if it was up */
-	if (priv->registered) {
-		devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev,
-							      priv->port));
+	if (priv->registered)
 		unregister_netdev(dev);
-	}
 
 	if (priv->allocated)
 		mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
@@ -3474,6 +3471,8 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
 				 mdev->profile.prof[priv->port].tx_ppp,
 				 mdev->profile.prof[priv->port].tx_pause);
 
+	SET_NETDEV_DEVLINK_PORT(dev,
+				mlx4_get_devlink_port(mdev->dev, priv->port));
 	err = register_netdev(dev);
 	if (err) {
 		en_err(priv, "Netdev registration failed for port %d\n", port);
@@ -3481,8 +3480,6 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
 	}
 
 	priv->registered = 1;
-	devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port),
-				  dev);
 
 	return 0;
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.c
index b69f9d10ccbd..ce0e56f856d6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.c
@@ -51,13 +51,6 @@ int mlx5e_devlink_port_register(struct mlx5e_priv *priv)
 	return ret;
 }
 
-void mlx5e_devlink_port_type_eth_set(struct mlx5e_priv *priv)
-{
-	struct devlink_port *dl_port = mlx5e_devlink_get_dl_port(priv);
-
-	devlink_port_type_eth_set(dl_port, priv->netdev);
-}
-
 void mlx5e_devlink_port_unregister(struct mlx5e_priv *priv)
 {
 	struct devlink_port *dl_port = mlx5e_devlink_get_dl_port(priv);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.h b/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.h
index 10b50feb9883..1c203257ac30 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.h
@@ -9,7 +9,6 @@
 
 int mlx5e_devlink_port_register(struct mlx5e_priv *priv);
 void mlx5e_devlink_port_unregister(struct mlx5e_priv *priv);
-void mlx5e_devlink_port_type_eth_set(struct mlx5e_priv *priv);
 struct devlink_port *mlx5e_get_devlink_port(struct net_device *dev);
 
 static inline struct devlink_port *
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 21fe43406d88..48987c4120e4 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -5867,14 +5867,13 @@ static int mlx5e_probe(struct auxiliary_device *adev,
 		goto err_profile_cleanup;
 	}
 
+	SET_NETDEV_DEVLINK_PORT(netdev, mlx5e_devlink_get_dl_port(priv));
 	err = register_netdev(netdev);
 	if (err) {
 		mlx5_core_err(mdev, "register_netdev failed, %d\n", err);
 		goto err_resume;
 	}
 
-	mlx5e_devlink_port_type_eth_set(priv);
-
 	mlx5e_dcbnl_init_app(priv);
 	mlx5_uplink_netdev_set(mdev, netdev);
 	return 0;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 794cd8dfe9c9..e81d7fcd88e2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -1253,37 +1253,20 @@ mlx5e_vport_uplink_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *
 {
 	struct mlx5e_priv *priv = netdev_priv(mlx5_uplink_netdev_get(dev));
 	struct mlx5e_rep_priv *rpriv = mlx5e_rep_to_rep_priv(rep);
-	struct devlink_port *dl_port;
-	int err;
 
 	rpriv->netdev = priv->netdev;
-
-	err = mlx5e_netdev_change_profile(priv, &mlx5e_uplink_rep_profile,
-					  rpriv);
-	if (err)
-		return err;
-
-	dl_port = mlx5_esw_offloads_devlink_port(dev->priv.eswitch, rpriv->rep->vport);
-	if (dl_port)
-		devlink_port_type_eth_set(dl_port, rpriv->netdev);
-
-	return 0;
+	return mlx5e_netdev_change_profile(priv, &mlx5e_uplink_rep_profile,
+					   rpriv);
 }
 
 static void
 mlx5e_vport_uplink_rep_unload(struct mlx5e_rep_priv *rpriv)
 {
 	struct net_device *netdev = rpriv->netdev;
-	struct devlink_port *dl_port;
-	struct mlx5_core_dev *dev;
 	struct mlx5e_priv *priv;
 
 	priv = netdev_priv(netdev);
-	dev = priv->mdev;
 
-	dl_port = mlx5_esw_offloads_devlink_port(dev->priv.eswitch, rpriv->rep->vport);
-	if (dl_port)
-		devlink_port_type_clear(dl_port);
 	mlx5e_netdev_attach_nic_profile(priv);
 }
 
@@ -1326,6 +1309,10 @@ mlx5e_vport_vf_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
 		goto err_cleanup_profile;
 	}
 
+	dl_port = mlx5_esw_offloads_devlink_port(dev->priv.eswitch, rpriv->rep->vport);
+	if (dl_port)
+		SET_NETDEV_DEVLINK_PORT(netdev, dl_port);
+
 	err = register_netdev(netdev);
 	if (err) {
 		netdev_warn(netdev,
@@ -1334,9 +1321,6 @@ mlx5e_vport_vf_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
 		goto err_detach_netdev;
 	}
 
-	dl_port = mlx5_esw_offloads_devlink_port(dev->priv.eswitch, rpriv->rep->vport);
-	if (dl_port)
-		devlink_port_type_eth_set(dl_port, netdev);
 	return 0;
 
 err_detach_netdev:
@@ -1382,8 +1366,6 @@ mlx5e_vport_rep_unload(struct mlx5_eswitch_rep *rep)
 	struct mlx5e_rep_priv *rpriv = mlx5e_rep_to_rep_priv(rep);
 	struct net_device *netdev = rpriv->netdev;
 	struct mlx5e_priv *priv = netdev_priv(netdev);
-	struct mlx5_core_dev *dev = priv->mdev;
-	struct devlink_port *dl_port;
 	void *ppriv = priv->ppriv;
 
 	if (rep->vport == MLX5_VPORT_UPLINK) {
@@ -1391,9 +1373,6 @@ mlx5e_vport_rep_unload(struct mlx5_eswitch_rep *rep)
 		goto free_ppriv;
 	}
 
-	dl_port = mlx5_esw_offloads_devlink_port(dev->priv.eswitch, rpriv->rep->vport);
-	if (dl_port)
-		devlink_port_type_clear(dl_port);
 	unregister_netdev(netdev);
 	mlx5e_detach_netdev(priv);
 	priv->profile->cleanup(priv);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
index e2a985ec2c76..a83f6bc30072 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -3172,29 +3172,17 @@ void mlxsw_core_cpu_port_fini(struct mlxsw_core *mlxsw_core)
 }
 EXPORT_SYMBOL(mlxsw_core_cpu_port_fini);
 
-void mlxsw_core_port_eth_set(struct mlxsw_core *mlxsw_core, u16 local_port,
-			     void *port_driver_priv, struct net_device *dev)
+void mlxsw_core_port_netdev_link(struct mlxsw_core *mlxsw_core, u16 local_port,
+				 void *port_driver_priv, struct net_device *dev)
 {
 	struct mlxsw_core_port *mlxsw_core_port =
 					&mlxsw_core->ports[local_port];
 	struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port;
 
 	mlxsw_core_port->port_driver_priv = port_driver_priv;
-	devlink_port_type_eth_set(devlink_port, dev);
+	SET_NETDEV_DEVLINK_PORT(dev, devlink_port);
 }
-EXPORT_SYMBOL(mlxsw_core_port_eth_set);
-
-void mlxsw_core_port_clear(struct mlxsw_core *mlxsw_core, u16 local_port,
-			   void *port_driver_priv)
-{
-	struct mlxsw_core_port *mlxsw_core_port =
-					&mlxsw_core->ports[local_port];
-	struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port;
-
-	mlxsw_core_port->port_driver_priv = port_driver_priv;
-	devlink_port_type_clear(devlink_port);
-}
-EXPORT_SYMBOL(mlxsw_core_port_clear);
+EXPORT_SYMBOL(mlxsw_core_port_netdev_link);
 
 struct devlink_port *
 mlxsw_core_port_devlink_port_get(struct mlxsw_core *mlxsw_core,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h
index ca0c3d2bee6b..e0a6fcbbcb19 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.h
@@ -264,10 +264,9 @@ int mlxsw_core_cpu_port_init(struct mlxsw_core *mlxsw_core,
 			     const unsigned char *switch_id,
 			     unsigned char switch_id_len);
 void mlxsw_core_cpu_port_fini(struct mlxsw_core *mlxsw_core);
-void mlxsw_core_port_eth_set(struct mlxsw_core *mlxsw_core, u16 local_port,
-			     void *port_driver_priv, struct net_device *dev);
-void mlxsw_core_port_clear(struct mlxsw_core *mlxsw_core, u16 local_port,
-			   void *port_driver_priv);
+void mlxsw_core_port_netdev_link(struct mlxsw_core *mlxsw_core, u16 local_port,
+				 void *port_driver_priv,
+				 struct net_device *dev);
 struct devlink_port *
 mlxsw_core_port_devlink_port_get(struct mlxsw_core *mlxsw_core,
 				 u16 local_port);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
index 55b3c42bb007..177cf7e4db34 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/minimal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
@@ -265,6 +265,8 @@ mlxsw_m_port_create(struct mlxsw_m *mlxsw_m, u16 local_port, u8 slot_index,
 	SET_NETDEV_DEV(dev, mlxsw_m->bus_info->dev);
 	dev_net_set(dev, mlxsw_core_net(mlxsw_m->core));
 	mlxsw_m_port = netdev_priv(dev);
+	mlxsw_core_port_netdev_link(mlxsw_m->core, local_port,
+				    mlxsw_m_port, dev);
 	mlxsw_m_port->dev = dev;
 	mlxsw_m_port->mlxsw_m = mlxsw_m;
 	mlxsw_m_port->local_port = local_port;
@@ -298,9 +300,6 @@ mlxsw_m_port_create(struct mlxsw_m *mlxsw_m, u16 local_port, u8 slot_index,
 		goto err_register_netdev;
 	}
 
-	mlxsw_core_port_eth_set(mlxsw_m->core, mlxsw_m_port->local_port,
-				mlxsw_m_port, dev);
-
 	return 0;
 
 err_register_netdev:
@@ -316,7 +315,6 @@ static void mlxsw_m_port_remove(struct mlxsw_m *mlxsw_m, u16 local_port)
 {
 	struct mlxsw_m_port *mlxsw_m_port = mlxsw_m->ports[local_port];
 
-	mlxsw_core_port_clear(mlxsw_m->core, local_port, mlxsw_m);
 	unregister_netdev(mlxsw_m_port->dev); /* This calls ndo_stop */
 	mlxsw_m->ports[local_port] = NULL;
 	free_netdev(mlxsw_m_port->dev);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 5bcf5bceff71..bdb6a855ee98 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -1651,6 +1651,8 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u16 local_port,
 	SET_NETDEV_DEV(dev, mlxsw_sp->bus_info->dev);
 	dev_net_set(dev, mlxsw_sp_net(mlxsw_sp));
 	mlxsw_sp_port = netdev_priv(dev);
+	mlxsw_core_port_netdev_link(mlxsw_sp->core, local_port,
+				    mlxsw_sp_port, dev);
 	mlxsw_sp_port->dev = dev;
 	mlxsw_sp_port->mlxsw_sp = mlxsw_sp;
 	mlxsw_sp_port->local_port = local_port;
@@ -1839,8 +1841,6 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u16 local_port,
 		goto err_register_netdev;
 	}
 
-	mlxsw_core_port_eth_set(mlxsw_sp->core, mlxsw_sp_port->local_port,
-				mlxsw_sp_port, dev);
 	mlxsw_core_schedule_dw(&mlxsw_sp_port->periodic_hw_stats.update_dw, 0);
 	return 0;
 
@@ -1897,7 +1897,6 @@ static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u16 local_port)
 
 	cancel_delayed_work_sync(&mlxsw_sp_port->periodic_hw_stats.update_dw);
 	cancel_delayed_work_sync(&mlxsw_sp_port->ptp.shaper_dw);
-	mlxsw_core_port_clear(mlxsw_sp->core, local_port, mlxsw_sp);
 	unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
 	mlxsw_sp_port_ptp_clear(mlxsw_sp_port);
 	mlxsw_sp_port_vlan_classification_set(mlxsw_sp_port, true, true);
diff --git a/drivers/net/ethernet/mscc/ocelot_net.c b/drivers/net/ethernet/mscc/ocelot_net.c
index 50858cc10fef..5efc07751c8d 100644
--- a/drivers/net/ethernet/mscc/ocelot_net.c
+++ b/drivers/net/ethernet/mscc/ocelot_net.c
@@ -1873,6 +1873,7 @@ int ocelot_probe_port(struct ocelot *ocelot, int port, struct regmap *target,
 	if (ocelot->fdma)
 		ocelot_fdma_netdev_init(ocelot, dev);
 
+	SET_NETDEV_DEVLINK_PORT(dev, &ocelot->devlink_ports[port]);
 	err = register_netdev(dev);
 	if (err) {
 		dev_err(ocelot->dev, "register_netdev failed\n");
diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
index 6f22aea08a64..f126381c951f 100644
--- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
+++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
@@ -377,9 +377,7 @@ static int mscc_ocelot_init_ports(struct platform_device *pdev,
 		return -ENOMEM;
 
 	for_each_available_child_of_node(ports, portnp) {
-		struct ocelot_port_private *priv;
 		struct ocelot_port *ocelot_port;
-		struct devlink_port *dlp;
 		struct regmap *target;
 		struct resource *res;
 		char res_name[8];
@@ -422,10 +420,6 @@ static int mscc_ocelot_init_ports(struct platform_device *pdev,
 		devlink_ports_registered |= BIT(port);
 
 		ocelot_port = ocelot->ports[port];
-		priv = container_of(ocelot_port, struct ocelot_port_private,
-				    port);
-		dlp = &ocelot->devlink_ports[port];
-		devlink_port_type_eth_set(dlp, priv->dev);
 	}
 
 	/* Initialize unused devlink ports at the end */
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_devlink.c b/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
index 405786c00334..f3f0f11d8b52 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
@@ -334,6 +334,8 @@ int nfp_devlink_port_register(struct nfp_app *app, struct nfp_port *port)
 	int serial_len;
 	int ret;
 
+	SET_NETDEV_DEVLINK_PORT(port->netdev, &port->dl_port);
+
 	rtnl_lock();
 	ret = nfp_devlink_fill_eth_port(port, &eth_port);
 	rtnl_unlock();
@@ -361,16 +363,6 @@ void nfp_devlink_port_unregister(struct nfp_port *port)
 	devl_port_unregister(&port->dl_port);
 }
 
-void nfp_devlink_port_type_eth_set(struct nfp_port *port)
-{
-	devlink_port_type_eth_set(&port->dl_port, port->netdev);
-}
-
-void nfp_devlink_port_type_clear(struct nfp_port *port)
-{
-	devlink_port_type_clear(&port->dl_port);
-}
-
 struct devlink_port *nfp_devlink_get_devlink_port(struct net_device *netdev)
 {
 	struct nfp_port *port;
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_main.c b/drivers/net/ethernet/netronome/nfp/nfp_net_main.c
index 3bae92dc899e..7abf0c576868 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_main.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_main.c
@@ -156,22 +156,17 @@ nfp_net_pf_init_vnic(struct nfp_pf *pf, struct nfp_net *nn, unsigned int id)
 
 	nfp_net_debugfs_vnic_add(nn, pf->ddir);
 
-	if (nn->port)
-		nfp_devlink_port_type_eth_set(nn->port);
-
 	nfp_net_info(nn);
 
 	if (nfp_net_is_data_vnic(nn)) {
 		err = nfp_app_vnic_init(pf->app, nn);
 		if (err)
-			goto err_devlink_port_type_clean;
+			goto err_debugfs_vnic_clean;
 	}
 
 	return 0;
 
-err_devlink_port_type_clean:
-	if (nn->port)
-		nfp_devlink_port_type_clear(nn->port);
+err_debugfs_vnic_clean:
 	nfp_net_debugfs_dir_clean(&nn->debugfs_dir);
 	nfp_net_clean(nn);
 err_devlink_port_clean:
@@ -220,8 +215,6 @@ static void nfp_net_pf_clean_vnic(struct nfp_pf *pf, struct nfp_net *nn)
 {
 	if (nfp_net_is_data_vnic(nn))
 		nfp_app_vnic_clean(pf->app, nn);
-	if (nn->port)
-		nfp_devlink_port_type_clear(nn->port);
 	nfp_net_debugfs_dir_clean(&nn->debugfs_dir);
 	nfp_net_clean(nn);
 	if (nn->port)
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_port.h b/drivers/net/ethernet/netronome/nfp/nfp_port.h
index 6793cdf9ff11..f8cd157ca1d7 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_port.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_port.h
@@ -129,8 +129,6 @@ int nfp_net_refresh_port_table_sync(struct nfp_pf *pf);
 
 int nfp_devlink_port_register(struct nfp_app *app, struct nfp_port *port);
 void nfp_devlink_port_unregister(struct nfp_port *port);
-void nfp_devlink_port_type_eth_set(struct nfp_port *port);
-void nfp_devlink_port_type_clear(struct nfp_port *port);
 
 /* Mac stats (0x0000 - 0x0200)
  * all counters are 64bit.
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_devlink.c b/drivers/net/ethernet/pensando/ionic/ionic_devlink.c
index 4297ed9024c0..567f778433e2 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_devlink.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_devlink.c
@@ -90,7 +90,7 @@ int ionic_devlink_register(struct ionic *ionic)
 		return err;
 	}
 
-	devlink_port_type_eth_set(&ionic->dl_port, ionic->lif->netdev);
+	SET_NETDEV_DEVLINK_PORT(ionic->lif->netdev, &ionic->dl_port);
 	devlink_register(dl);
 	return 0;
 }
diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
index 3cbe4ec46234..43d1fba22d41 100644
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -2531,7 +2531,6 @@ static void am65_cpsw_unregister_devlink(struct am65_cpsw_common *common)
 static int am65_cpsw_nuss_register_ndevs(struct am65_cpsw_common *common)
 {
 	struct device *dev = common->dev;
-	struct devlink_port *dl_port;
 	struct am65_cpsw_port *port;
 	int ret = 0, i;
 
@@ -2558,15 +2557,14 @@ static int am65_cpsw_nuss_register_ndevs(struct am65_cpsw_common *common)
 		if (!port->ndev)
 			continue;
 
+		SET_NETDEV_DEVLINK_PORT(port->ndev, &port->devlink_port);
+
 		ret = register_netdev(port->ndev);
 		if (ret) {
 			dev_err(dev, "error registering slave net device%i %d\n",
 				i, ret);
 			goto err_cleanup_ndev;
 		}
-
-		dl_port = &port->devlink_port;
-		devlink_port_type_eth_set(dl_port, port->ndev);
 	}
 
 	ret = am65_cpsw_register_notifiers(common);
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c
index 794fc0cc73b8..07a26c86da8e 100644
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -1397,7 +1397,6 @@ static int __nsim_dev_port_add(struct nsim_dev *nsim_dev, enum nsim_dev_port_typ
 			goto err_nsim_destroy;
 	}
 
-	devlink_port_type_eth_set(devlink_port, nsim_dev_port->ns->netdev);
 	list_add(&nsim_dev_port->list, &nsim_dev->port_list);
 
 	return 0;
@@ -1420,7 +1419,6 @@ static void __nsim_dev_port_del(struct nsim_dev_port *nsim_dev_port)
 	list_del(&nsim_dev_port->list);
 	if (nsim_dev_port_is_vf(nsim_dev_port))
 		devl_rate_leaf_destroy(&nsim_dev_port->devlink_port);
-	devlink_port_type_clear(devlink_port);
 	nsim_destroy(nsim_dev_port->ns);
 	nsim_dev_port_debugfs_exit(nsim_dev_port);
 	devl_port_unregister(devlink_port);
diff --git a/drivers/net/netdevsim/netdev.c b/drivers/net/netdevsim/netdev.c
index 9a1a5b203624..4eb90cc49e22 100644
--- a/drivers/net/netdevsim/netdev.c
+++ b/drivers/net/netdevsim/netdev.c
@@ -360,6 +360,7 @@ nsim_create(struct nsim_dev *nsim_dev, struct nsim_dev_port *nsim_dev_port)
 	ns->nsim_dev_port = nsim_dev_port;
 	ns->nsim_bus_dev = nsim_dev->nsim_bus_dev;
 	SET_NETDEV_DEV(dev, &ns->nsim_bus_dev->dev);
+	SET_NETDEV_DEVLINK_PORT(dev, &nsim_dev_port->devlink_port);
 	nsim_ethtool_init(ns);
 	if (nsim_dev_port_is_pf(nsim_dev_port))
 		err = nsim_init_netdevsim(ns);
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index af0e2c0394ac..65d3ed16cf94 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -529,7 +529,6 @@ static void dsa_port_devlink_teardown(struct dsa_port *dp)
 
 static int dsa_port_setup(struct dsa_port *dp)
 {
-	struct devlink_port *dlp = &dp->devlink_port;
 	bool dsa_port_link_registered = false;
 	struct dsa_switch *ds = dp->ds;
 	bool dsa_port_enabled = false;
@@ -585,10 +584,6 @@ static int dsa_port_setup(struct dsa_port *dp)
 	case DSA_PORT_TYPE_USER:
 		of_get_mac_address(dp->dn, dp->mac);
 		err = dsa_slave_create(dp);
-		if (err)
-			break;
-
-		devlink_port_type_eth_set(dlp, dp->slave);
 		break;
 	}
 
@@ -608,13 +603,9 @@ static int dsa_port_setup(struct dsa_port *dp)
 
 static void dsa_port_teardown(struct dsa_port *dp)
 {
-	struct devlink_port *dlp = &dp->devlink_port;
-
 	if (!dp->setup)
 		return;
 
-	devlink_port_type_clear(dlp);
-
 	switch (dp->type) {
 	case DSA_PORT_TYPE_UNUSED:
 		break;
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 1a59918d3b30..a72f6e3c9ed6 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -2406,6 +2406,7 @@ int dsa_slave_create(struct dsa_port *port)
 	SET_NETDEV_DEVTYPE(slave_dev, &dsa_type);
 
 	SET_NETDEV_DEV(slave_dev, port->ds->dev);
+	SET_NETDEV_DEVLINK_PORT(slave_dev, &port->devlink_port);
 	slave_dev->dev.of_node = port->dn;
 	slave_dev->vlan_features = master->vlan_features;
 
-- 
2.37.1

[patch net-next v2 07/13] net: devlink: remove netdev arg from devlink_port_type_eth_set()

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

Since devlink_port_type_eth_set() should no longer be called by any
driver with netdev pointer as it should rather use
SET_NETDEV_DEVLINK_PORT, remove the netdev arg. Add a warn to
type_clear()

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx4/main.c |  2 +-
 include/net/devlink.h                     |  3 +--
 net/core/devlink.c                        | 23 ++++++++++++++---------
 3 files changed, 16 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index d3fc86cd3c1d..3ae246391549 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -3043,7 +3043,7 @@ static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
 	 */
 	if (!IS_ENABLED(CONFIG_MLX4_EN) &&
 	    dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
-		devlink_port_type_eth_set(&info->devlink_port, NULL);
+		devlink_port_type_eth_set(&info->devlink_port);
 	else if (!IS_ENABLED(CONFIG_MLX4_INFINIBAND) &&
 		 dev->caps.port_type[port] == MLX4_PORT_TYPE_IB)
 		devlink_port_type_ib_set(&info->devlink_port, NULL);
diff --git a/include/net/devlink.h b/include/net/devlink.h
index 6c55aabaedf1..b1582b32183a 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -1582,8 +1582,7 @@ int devlink_port_register(struct devlink *devlink,
 			  unsigned int port_index);
 void devl_port_unregister(struct devlink_port *devlink_port);
 void devlink_port_unregister(struct devlink_port *devlink_port);
-void devlink_port_type_eth_set(struct devlink_port *devlink_port,
-			       struct net_device *netdev);
+void devlink_port_type_eth_set(struct devlink_port *devlink_port);
 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
 			      struct ib_device *ibdev);
 void devlink_port_type_clear(struct devlink_port *devlink_port);
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 87aa39bc481e..f119ac43c50d 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -10097,17 +10097,15 @@ static void __devlink_port_type_set(struct devlink_port *devlink_port,
  *	devlink_port_type_eth_set - Set port type to Ethernet
  *
  *	@devlink_port: devlink port
- *	@netdev: related netdevice
+ *
+ *	If driver is calling this, most likely it is doing something wrong.
  */
-void devlink_port_type_eth_set(struct devlink_port *devlink_port,
-			       struct net_device *netdev)
+void devlink_port_type_eth_set(struct devlink_port *devlink_port)
 {
-	if (!netdev)
-		dev_warn(devlink_port->devlink->dev,
-			 "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
-			 devlink_port->index);
-
-	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev,
+	dev_warn(devlink_port->devlink->dev,
+		 "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
+		 devlink_port->index);
+	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, NULL,
 				false);
 }
 EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
@@ -10130,9 +10128,16 @@ EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
  *	devlink_port_type_clear - Clear port type
  *
  *	@devlink_port: devlink port
+ *
+ *	If driver is calling this for clearing Ethernet type, most likely
+ *	it is doing something wrong.
  */
 void devlink_port_type_clear(struct devlink_port *devlink_port)
 {
+	if (devlink_port->type == DEVLINK_PORT_TYPE_ETH)
+		dev_warn(devlink_port->devlink->dev,
+			 "devlink port type for port %d cleared without a software interface reference, device type not supported by the kernel?\n",
+			 devlink_port->index);
 	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL,
 				false);
 }
-- 
2.37.1

[patch net-next v2 08/13] net: devlink: remove net namespace check from devlink_nl_port_fill()

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

It is ensured by the netdevice notifier event processing, that only
netdev pointers from the same net namespaces are filled. Remove the
net namespace check from devlink_nl_port_fill() as it is no longer
needed.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
 net/core/devlink.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/core/devlink.c b/net/core/devlink.c
index f119ac43c50d..b5a452bec313 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -1305,10 +1305,9 @@ static int devlink_nl_port_fill(struct sk_buff *msg,
 			devlink_port->desired_type))
 		goto nla_put_failure_type_locked;
 	if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
-		struct net *net = devlink_net(devlink_port->devlink);
 		struct net_device *netdev = devlink_port->type_eth.netdev;
 
-		if (netdev && net_eq(net, dev_net(netdev)) &&
+		if (netdev &&
 		    (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
 				 netdev->ifindex) ||
 		     nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
-- 
2.37.1

[patch net-next v2 09/13] net: devlink: store copy netdevice ifindex and ifname to allow port_fill() without RTNL held

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

To avoid a need to take RTNL mutex in port_fill() function, benefit from
the introduce infrastructure that tracks netdevice notifier events.
Store the ifindex and ifname upon register and change name events.
Remove the rtnl_held bool propagated down to port_fill() function as it
is no longer needed.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
 include/net/devlink.h |  2 ++
 net/core/devlink.c    | 68 +++++++++++++++++--------------------------
 2 files changed, 29 insertions(+), 41 deletions(-)

diff --git a/include/net/devlink.h b/include/net/devlink.h
index b1582b32183a..7befad57afd4 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -129,6 +129,8 @@ struct devlink_port {
 	union {
 		struct {
 			struct net_device *netdev;
+			int ifindex;
+			char ifname[IFNAMSIZ];
 		} type_eth;
 		struct {
 			struct ib_device *ibdev;
diff --git a/net/core/devlink.c b/net/core/devlink.c
index b5a452bec313..2f565976979f 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -1279,8 +1279,7 @@ devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *por
 static int devlink_nl_port_fill(struct sk_buff *msg,
 				struct devlink_port *devlink_port,
 				enum devlink_command cmd, u32 portid, u32 seq,
-				int flags, struct netlink_ext_ack *extack,
-				bool rtnl_held)
+				int flags, struct netlink_ext_ack *extack)
 {
 	struct devlink *devlink = devlink_port->devlink;
 	void *hdr;
@@ -1294,9 +1293,6 @@ static int devlink_nl_port_fill(struct sk_buff *msg,
 	if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
 		goto nla_put_failure;
 
-	/* Hold rtnl lock while accessing port's netdev attributes. */
-	if (!rtnl_held)
-		rtnl_lock();
 	spin_lock_bh(&devlink_port->type_lock);
 	if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
 		goto nla_put_failure_type_locked;
@@ -1305,13 +1301,11 @@ static int devlink_nl_port_fill(struct sk_buff *msg,
 			devlink_port->desired_type))
 		goto nla_put_failure_type_locked;
 	if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
-		struct net_device *netdev = devlink_port->type_eth.netdev;
-
-		if (netdev &&
+		if (devlink_port->type_eth.netdev &&
 		    (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
-				 netdev->ifindex) ||
+				 devlink_port->type_eth.ifindex) ||
 		     nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
-				    netdev->name)))
+				    devlink_port->type_eth.ifname)))
 			goto nla_put_failure_type_locked;
 	}
 	if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
@@ -1323,8 +1317,6 @@ static int devlink_nl_port_fill(struct sk_buff *msg,
 			goto nla_put_failure_type_locked;
 	}
 	spin_unlock_bh(&devlink_port->type_lock);
-	if (!rtnl_held)
-		rtnl_unlock();
 	if (devlink_nl_port_attrs_put(msg, devlink_port))
 		goto nla_put_failure;
 	if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
@@ -1339,15 +1331,13 @@ static int devlink_nl_port_fill(struct sk_buff *msg,
 
 nla_put_failure_type_locked:
 	spin_unlock_bh(&devlink_port->type_lock);
-	if (!rtnl_held)
-		rtnl_unlock();
 nla_put_failure:
 	genlmsg_cancel(msg, hdr);
 	return -EMSGSIZE;
 }
 
-static void __devlink_port_notify(struct devlink_port *devlink_port,
-				  enum devlink_command cmd, bool rtnl_held)
+static void devlink_port_notify(struct devlink_port *devlink_port,
+				enum devlink_command cmd)
 {
 	struct devlink *devlink = devlink_port->devlink;
 	struct sk_buff *msg;
@@ -1362,8 +1352,7 @@ static void __devlink_port_notify(struct devlink_port *devlink_port,
 	if (!msg)
 		return;
 
-	err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL,
-				   rtnl_held);
+	err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL);
 	if (err) {
 		nlmsg_free(msg);
 		return;
@@ -1373,12 +1362,6 @@ static void __devlink_port_notify(struct devlink_port *devlink_port,
 				0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
 }
 
-static void devlink_port_notify(struct devlink_port *devlink_port,
-				enum devlink_command cmd)
-{
-	__devlink_port_notify(devlink_port, cmd, false);
-}
-
 static void devlink_rate_notify(struct devlink_rate *devlink_rate,
 				enum devlink_command cmd)
 {
@@ -1542,7 +1525,7 @@ static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
 
 	err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW,
 				   info->snd_portid, info->snd_seq, 0,
-				   info->extack, false);
+				   info->extack);
 	if (err) {
 		nlmsg_free(msg);
 		return err;
@@ -1572,8 +1555,7 @@ static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
 						   DEVLINK_CMD_NEW,
 						   NETLINK_CB(cb->skb).portid,
 						   cb->nlh->nlmsg_seq,
-						   NLM_F_MULTI, cb->extack,
-						   false);
+						   NLM_F_MULTI, cb->extack);
 			if (err) {
 				devl_unlock(devlink);
 				devlink_put(devlink);
@@ -1785,8 +1767,7 @@ static int devlink_port_new_notify(struct devlink *devlink,
 	}
 
 	err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
-				   info->snd_portid, info->snd_seq, 0, NULL,
-				   false);
+				   info->snd_portid, info->snd_seq, 0, NULL);
 	if (err)
 		goto out;
 
@@ -10062,7 +10043,7 @@ static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
 
 static void __devlink_port_type_set(struct devlink_port *devlink_port,
 				    enum devlink_port_type type,
-				    void *type_dev, bool rtnl_held)
+				    void *type_dev)
 {
 	struct net_device *netdev = type_dev;
 
@@ -10081,6 +10062,13 @@ static void __devlink_port_type_set(struct devlink_port *devlink_port,
 	switch (type) {
 	case DEVLINK_PORT_TYPE_ETH:
 		devlink_port->type_eth.netdev = netdev;
+		if (netdev) {
+			ASSERT_RTNL();
+			devlink_port->type_eth.ifindex = netdev->ifindex;
+			BUILD_BUG_ON(sizeof(devlink_port->type_eth.ifname) !=
+				     sizeof(netdev->name));
+			strcpy(devlink_port->type_eth.ifname, netdev->name);
+		}
 		break;
 	case DEVLINK_PORT_TYPE_IB:
 		devlink_port->type_ib.ibdev = type_dev;
@@ -10089,7 +10077,7 @@ static void __devlink_port_type_set(struct devlink_port *devlink_port,
 		break;
 	}
 	spin_unlock_bh(&devlink_port->type_lock);
-	__devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW, rtnl_held);
+	devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
 }
 
 /**
@@ -10104,8 +10092,7 @@ void devlink_port_type_eth_set(struct devlink_port *devlink_port)
 	dev_warn(devlink_port->devlink->dev,
 		 "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
 		 devlink_port->index);
-	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, NULL,
-				false);
+	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, NULL);
 }
 EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
 
@@ -10118,8 +10105,7 @@ EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
 void devlink_port_type_ib_set(struct devlink_port *devlink_port,
 			      struct ib_device *ibdev)
 {
-	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev,
-				false);
+	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
 }
 EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
 
@@ -10137,8 +10123,7 @@ void devlink_port_type_clear(struct devlink_port *devlink_port)
 		dev_warn(devlink_port->devlink->dev,
 			 "devlink port type for port %d cleared without a software interface reference, device type not supported by the kernel?\n",
 			 devlink_port->index);
-	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL,
-				false);
+	__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
 }
 EXPORT_SYMBOL_GPL(devlink_port_type_clear);
 
@@ -10161,16 +10146,17 @@ static int devlink_netdevice_event(struct notifier_block *nb,
 		 * netdevice register
 		 */
 		__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH,
-					NULL, true);
+					NULL);
 		break;
 	case NETDEV_REGISTER:
+	case NETDEV_CHANGENAME:
 		/* Set the netdev on top of previously set type. Note this
 		 * event happens also during net namespace change so here
 		 * we take into account netdev pointer appearing in this
 		 * namespace.
 		 */
 		__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH,
-					netdev, true);
+					netdev);
 		break;
 	case NETDEV_UNREGISTER:
 		/* Clear netdev pointer, but not the type. This event happens
@@ -10178,14 +10164,14 @@ static int devlink_netdevice_event(struct notifier_block *nb,
 		 * pointer to netdev that is going to another net namespace.
 		 */
 		__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH,
-					NULL, true);
+					NULL);
 		break;
 	case NETDEV_PRE_UNINIT:
 		/* Clear the type and the netdev pointer. Happens one during
 		 * netdevice unregister.
 		 */
 		__devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET,
-					NULL, true);
+					NULL);
 		break;
 	}
 
-- 
2.37.1

[patch net-next v2 10/13] net: devlink: add not cleared type warning to port unregister

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

By the time port unregister is called. There should be no type set. Make
sure that the driver cleared it before and warn in case it didn't. This
enforces symmetricity with type set and port register.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
 net/core/devlink.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/core/devlink.c b/net/core/devlink.c
index 2f565976979f..cac0c7852159 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -9977,6 +9977,7 @@ EXPORT_SYMBOL_GPL(devlink_port_register);
 void devl_port_unregister(struct devlink_port *devlink_port)
 {
 	lockdep_assert_held(&devlink_port->devlink->lock);
+	WARN_ON(devlink_port->type != DEVLINK_PORT_TYPE_NOTSET);
 
 	devlink_port_type_warn_cancel(devlink_port);
 	devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
-- 
2.37.1

[patch net-next v2 11/13] net: devlink: use devlink_port pointer instead of ndo_get_devlink_port

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

Use newly introduced devlink_port pointer instead of getting it calling
to ndo_get_devlink_port op.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
 net/core/devlink.c   | 12 ++----------
 net/core/net-sysfs.c |  4 ++--
 net/ethtool/ioctl.c  | 11 ++---------
 3 files changed, 6 insertions(+), 21 deletions(-)

diff --git a/net/core/devlink.c b/net/core/devlink.c
index cac0c7852159..2a42e49f6a4e 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -12505,14 +12505,6 @@ static void __devlink_compat_running_version(struct devlink *devlink,
 	nlmsg_free(msg);
 }
 
-static struct devlink_port *netdev_to_devlink_port(struct net_device *dev)
-{
-	if (!dev->netdev_ops->ndo_get_devlink_port)
-		return NULL;
-
-	return dev->netdev_ops->ndo_get_devlink_port(dev);
-}
-
 void devlink_compat_running_version(struct devlink *devlink,
 				    char *buf, size_t len)
 {
@@ -12558,7 +12550,7 @@ int devlink_compat_phys_port_name_get(struct net_device *dev,
 	 */
 	ASSERT_RTNL();
 
-	devlink_port = netdev_to_devlink_port(dev);
+	devlink_port = dev->devlink_port;
 	if (!devlink_port)
 		return -EOPNOTSUPP;
 
@@ -12574,7 +12566,7 @@ int devlink_compat_switch_id_get(struct net_device *dev,
 	 * devlink_port instance cannot disappear in the middle. No need to take
 	 * any devlink lock as only permanent values are accessed.
 	 */
-	devlink_port = netdev_to_devlink_port(dev);
+	devlink_port = dev->devlink_port;
 	if (!devlink_port || !devlink_port->switch_port)
 		return -EOPNOTSUPP;
 
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 8409d41405df..679b84cc8794 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -532,7 +532,7 @@ static ssize_t phys_port_name_show(struct device *dev,
 	 * returning early without hitting the trylock/restart below.
 	 */
 	if (!netdev->netdev_ops->ndo_get_phys_port_name &&
-	    !netdev->netdev_ops->ndo_get_devlink_port)
+	    !netdev->devlink_port)
 		return -EOPNOTSUPP;
 
 	if (!rtnl_trylock())
@@ -562,7 +562,7 @@ static ssize_t phys_switch_id_show(struct device *dev,
 	 * because recurse is false when calling dev_get_port_parent_id.
 	 */
 	if (!netdev->netdev_ops->ndo_get_port_parent_id &&
-	    !netdev->netdev_ops->ndo_get_devlink_port)
+	    !netdev->devlink_port)
 		return -EOPNOTSUPP;
 
 	if (!rtnl_trylock())
diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c
index 57e7238a4136..b6835136c53f 100644
--- a/net/ethtool/ioctl.c
+++ b/net/ethtool/ioctl.c
@@ -44,16 +44,9 @@ struct ethtool_devlink_compat {
 
 static struct devlink *netdev_to_devlink_get(struct net_device *dev)
 {
-	struct devlink_port *devlink_port;
-
-	if (!dev->netdev_ops->ndo_get_devlink_port)
-		return NULL;
-
-	devlink_port = dev->netdev_ops->ndo_get_devlink_port(dev);
-	if (!devlink_port)
+	if (!dev->devlink_port)
 		return NULL;
-
-	return devlink_try_get(devlink_port->devlink);
+	return devlink_try_get(dev->devlink_port->devlink);
 }
 
 /*
-- 
2.37.1

[patch net-next v2 12/13] net: remove unused ndo_get_devlink_port

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

Remove ndo_get_devlink_port which is no longer used alongside with the
implementations in drivers.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c         |  8 --------
 .../net/ethernet/fungible/funeth/funeth_main.c    |  8 --------
 drivers/net/ethernet/intel/ice/ice_main.c         | 15 ---------------
 drivers/net/ethernet/intel/ice/ice_repr.c         |  9 ---------
 .../ethernet/marvell/prestera/prestera_devlink.c  |  7 -------
 .../ethernet/marvell/prestera/prestera_devlink.h  |  2 --
 .../net/ethernet/marvell/prestera/prestera_main.c |  1 -
 .../net/ethernet/mellanox/mlx5/core/en/devlink.c  | 10 ----------
 .../net/ethernet/mellanox/mlx5/core/en/devlink.h  |  1 -
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c |  1 -
 drivers/net/ethernet/mellanox/mlx5/core/en_rep.c  | 10 ----------
 drivers/net/ethernet/mellanox/mlxsw/minimal.c     | 11 -----------
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c    | 11 -----------
 drivers/net/ethernet/mscc/ocelot_net.c            | 10 ----------
 drivers/net/ethernet/netronome/nfp/nfp_app.h      |  2 --
 drivers/net/ethernet/netronome/nfp/nfp_devlink.c  | 11 -----------
 .../net/ethernet/netronome/nfp/nfp_net_common.c   |  2 --
 drivers/net/ethernet/netronome/nfp/nfp_net_repr.c |  1 -
 drivers/net/ethernet/ti/am65-cpsw-nuss.c          |  8 --------
 drivers/net/netdevsim/netdev.c                    |  9 ---------
 include/linux/netdevice.h                         |  5 -----
 net/dsa/slave.c                                   |  8 --------
 22 files changed, 150 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 59d211fb01ba..0a00fad5cb83 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -13073,13 +13073,6 @@ int bnxt_get_port_parent_id(struct net_device *dev,
 	return 0;
 }
 
-static struct devlink_port *bnxt_get_devlink_port(struct net_device *dev)
-{
-	struct bnxt *bp = netdev_priv(dev);
-
-	return &bp->dl_port;
-}
-
 static const struct net_device_ops bnxt_netdev_ops = {
 	.ndo_open		= bnxt_open,
 	.ndo_start_xmit		= bnxt_start_xmit,
@@ -13111,7 +13104,6 @@ static const struct net_device_ops bnxt_netdev_ops = {
 	.ndo_xdp_xmit		= bnxt_xdp_xmit,
 	.ndo_bridge_getlink	= bnxt_bridge_getlink,
 	.ndo_bridge_setlink	= bnxt_bridge_setlink,
-	.ndo_get_devlink_port	= bnxt_get_devlink_port,
 };
 
 static void bnxt_remove_one(struct pci_dev *pdev)
diff --git a/drivers/net/ethernet/fungible/funeth/funeth_main.c b/drivers/net/ethernet/fungible/funeth/funeth_main.c
index 208dc89f4972..b4cce30e526a 100644
--- a/drivers/net/ethernet/fungible/funeth/funeth_main.c
+++ b/drivers/net/ethernet/fungible/funeth/funeth_main.c
@@ -1178,13 +1178,6 @@ static int fun_xdp(struct net_device *dev, struct netdev_bpf *xdp)
 	}
 }
 
-static struct devlink_port *fun_get_devlink_port(struct net_device *netdev)
-{
-	struct funeth_priv *fp = netdev_priv(netdev);
-
-	return &fp->dl_port;
-}
-
 static int fun_init_vports(struct fun_ethdev *ed, unsigned int n)
 {
 	if (ed->num_vports)
@@ -1350,7 +1343,6 @@ static const struct net_device_ops fun_netdev_ops = {
 	.ndo_set_vf_vlan	= fun_set_vf_vlan,
 	.ndo_set_vf_rate	= fun_set_vf_rate,
 	.ndo_get_vf_config	= fun_get_vf_config,
-	.ndo_get_devlink_port	= fun_get_devlink_port,
 };
 
 #define GSO_ENCAP_FLAGS (NETIF_F_GSO_GRE | NETIF_F_GSO_IPXIP4 | \
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index a4d5a6969f10..8f1aaf06c334 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -298,20 +298,6 @@ static int ice_clear_promisc(struct ice_vsi *vsi, u8 promisc_m)
 	return status;
 }
 
-/**
- * ice_get_devlink_port - Get devlink port from netdev
- * @netdev: the netdevice structure
- */
-static struct devlink_port *ice_get_devlink_port(struct net_device *netdev)
-{
-	struct ice_pf *pf = ice_netdev_to_pf(netdev);
-
-	if (!ice_is_switchdev_running(pf))
-		return NULL;
-
-	return &pf->devlink_port;
-}
-
 /**
  * ice_vsi_sync_fltr - Update the VSI filter list to the HW
  * @vsi: ptr to the VSI
@@ -9107,5 +9093,4 @@ static const struct net_device_ops ice_netdev_ops = {
 	.ndo_bpf = ice_xdp,
 	.ndo_xdp_xmit = ice_xdp_xmit,
 	.ndo_xsk_wakeup = ice_xsk_wakeup,
-	.ndo_get_devlink_port = ice_get_devlink_port,
 };
diff --git a/drivers/net/ethernet/intel/ice/ice_repr.c b/drivers/net/ethernet/intel/ice/ice_repr.c
index 663a7a0e1814..0483eb14c288 100644
--- a/drivers/net/ethernet/intel/ice/ice_repr.c
+++ b/drivers/net/ethernet/intel/ice/ice_repr.c
@@ -134,14 +134,6 @@ static int ice_repr_stop(struct net_device *netdev)
 	return 0;
 }
 
-static struct devlink_port *
-ice_repr_get_devlink_port(struct net_device *netdev)
-{
-	struct ice_repr *repr = ice_netdev_to_repr(netdev);
-
-	return &repr->vf->devlink_port;
-}
-
 /**
  * ice_repr_sp_stats64 - get slow path stats for port representor
  * @dev: network interface device structure
@@ -250,7 +242,6 @@ static const struct net_device_ops ice_repr_netdev_ops = {
 	.ndo_open = ice_repr_open,
 	.ndo_stop = ice_repr_stop,
 	.ndo_start_xmit = ice_eswitch_port_start_xmit,
-	.ndo_get_devlink_port = ice_repr_get_devlink_port,
 	.ndo_setup_tc = ice_repr_setup_tc,
 	.ndo_has_offload_stats = ice_repr_ndo_has_offload_stats,
 	.ndo_get_offload_stats = ice_repr_ndo_get_offload_stats,
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_devlink.c b/drivers/net/ethernet/marvell/prestera/prestera_devlink.c
index 637b8fee65e7..84ad05c9f12d 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_devlink.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_devlink.c
@@ -445,13 +445,6 @@ void prestera_devlink_port_unregister(struct prestera_port *port)
 	devlink_port_unregister(&port->dl_port);
 }
 
-struct devlink_port *prestera_devlink_get_port(struct net_device *dev)
-{
-	struct prestera_port *port = netdev_priv(dev);
-
-	return &port->dl_port;
-}
-
 int prestera_devlink_traps_register(struct prestera_switch *sw)
 {
 	const u32 groups_count = ARRAY_SIZE(prestera_trap_groups_arr);
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_devlink.h b/drivers/net/ethernet/marvell/prestera/prestera_devlink.h
index 04e8556f748a..bf84ad6fd87e 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_devlink.h
+++ b/drivers/net/ethernet/marvell/prestera/prestera_devlink.h
@@ -15,8 +15,6 @@ void prestera_devlink_unregister(struct prestera_switch *sw);
 int prestera_devlink_port_register(struct prestera_port *port);
 void prestera_devlink_port_unregister(struct prestera_port *port);
 
-struct devlink_port *prestera_devlink_get_port(struct net_device *dev);
-
 void prestera_devlink_trap_report(struct prestera_port *port,
 				  struct sk_buff *skb, u8 cpu_code);
 int prestera_devlink_traps_register(struct prestera_switch *sw);
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_main.c b/drivers/net/ethernet/marvell/prestera/prestera_main.c
index 18fefb27a356..626f46a6f227 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_main.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_main.c
@@ -558,7 +558,6 @@ static const struct net_device_ops prestera_netdev_ops = {
 	.ndo_change_mtu = prestera_port_change_mtu,
 	.ndo_get_stats64 = prestera_port_get_stats64,
 	.ndo_set_mac_address = prestera_port_set_mac_address,
-	.ndo_get_devlink_port = prestera_devlink_get_port,
 };
 
 int prestera_port_autoneg_set(struct prestera_port *port, u64 link_modes)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.c
index ce0e56f856d6..83adaabf59f5 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.c
@@ -62,13 +62,3 @@ void mlx5e_devlink_port_unregister(struct mlx5e_priv *priv)
 	if (!(priv->mdev->priv.flags & MLX5_PRIV_FLAGS_MLX5E_LOCKED_FLOW))
 		devl_unlock(devlink);
 }
-
-struct devlink_port *mlx5e_get_devlink_port(struct net_device *dev)
-{
-	struct mlx5e_priv *priv = netdev_priv(dev);
-
-	if (!netif_device_present(dev))
-		return NULL;
-
-	return mlx5e_devlink_get_dl_port(priv);
-}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.h b/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.h
index 1c203257ac30..4f238d4fff55 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/devlink.h
@@ -9,7 +9,6 @@
 
 int mlx5e_devlink_port_register(struct mlx5e_priv *priv);
 void mlx5e_devlink_port_unregister(struct mlx5e_priv *priv);
-struct devlink_port *mlx5e_get_devlink_port(struct net_device *dev);
 
 static inline struct devlink_port *
 mlx5e_devlink_get_dl_port(struct mlx5e_priv *priv)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 48987c4120e4..b08b4a81cd20 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -4833,7 +4833,6 @@ const struct net_device_ops mlx5e_netdev_ops = {
 	.ndo_has_offload_stats   = mlx5e_has_offload_stats,
 	.ndo_get_offload_stats   = mlx5e_get_offload_stats,
 #endif
-	.ndo_get_devlink_port    = mlx5e_get_devlink_port,
 };
 
 static u32 mlx5e_choose_lro_timeout(struct mlx5_core_dev *mdev, u32 wanted_timeout)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index e81d7fcd88e2..5670005dff00 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -607,15 +607,6 @@ static int mlx5e_rep_change_mtu(struct net_device *netdev, int new_mtu)
 	return mlx5e_change_mtu(netdev, new_mtu, NULL);
 }
 
-static struct devlink_port *mlx5e_rep_get_devlink_port(struct net_device *netdev)
-{
-	struct mlx5e_priv *priv = netdev_priv(netdev);
-	struct mlx5e_rep_priv *rpriv = priv->ppriv;
-	struct mlx5_core_dev *dev = priv->mdev;
-
-	return mlx5_esw_offloads_devlink_port(dev->priv.eswitch, rpriv->rep->vport);
-}
-
 static int mlx5e_rep_change_carrier(struct net_device *dev, bool new_carrier)
 {
 	struct mlx5e_priv *priv = netdev_priv(dev);
@@ -644,7 +635,6 @@ static const struct net_device_ops mlx5e_netdev_ops_rep = {
 	.ndo_stop                = mlx5e_rep_close,
 	.ndo_start_xmit          = mlx5e_xmit,
 	.ndo_setup_tc            = mlx5e_rep_setup_tc,
-	.ndo_get_devlink_port    = mlx5e_rep_get_devlink_port,
 	.ndo_get_stats64         = mlx5e_rep_get_stats,
 	.ndo_has_offload_stats	 = mlx5e_rep_has_offload_stats,
 	.ndo_get_offload_stats	 = mlx5e_rep_get_offload_stats,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
index 177cf7e4db34..6b56eadd736e 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/minimal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
@@ -81,20 +81,9 @@ static int mlxsw_m_port_stop(struct net_device *dev)
 	return 0;
 }
 
-static struct devlink_port *
-mlxsw_m_port_get_devlink_port(struct net_device *dev)
-{
-	struct mlxsw_m_port *mlxsw_m_port = netdev_priv(dev);
-	struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m;
-
-	return mlxsw_core_port_devlink_port_get(mlxsw_m->core,
-						mlxsw_m_port->local_port);
-}
-
 static const struct net_device_ops mlxsw_m_port_netdev_ops = {
 	.ndo_open		= mlxsw_m_port_open,
 	.ndo_stop		= mlxsw_m_port_stop,
-	.ndo_get_devlink_port	= mlxsw_m_port_get_devlink_port,
 };
 
 static void mlxsw_m_module_get_drvinfo(struct net_device *dev,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index bdb6a855ee98..856f40695d4a 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -1259,16 +1259,6 @@ static int mlxsw_sp_set_features(struct net_device *dev,
 	return 0;
 }
 
-static struct devlink_port *
-mlxsw_sp_port_get_devlink_port(struct net_device *dev)
-{
-	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
-	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
-
-	return mlxsw_core_port_devlink_port_get(mlxsw_sp->core,
-						mlxsw_sp_port->local_port);
-}
-
 static int mlxsw_sp_port_hwtstamp_set(struct mlxsw_sp_port *mlxsw_sp_port,
 				      struct ifreq *ifr)
 {
@@ -1342,7 +1332,6 @@ static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
 	.ndo_vlan_rx_add_vid	= mlxsw_sp_port_add_vid,
 	.ndo_vlan_rx_kill_vid	= mlxsw_sp_port_kill_vid,
 	.ndo_set_features	= mlxsw_sp_set_features,
-	.ndo_get_devlink_port	= mlxsw_sp_port_get_devlink_port,
 	.ndo_eth_ioctl		= mlxsw_sp_port_ioctl,
 };
 
diff --git a/drivers/net/ethernet/mscc/ocelot_net.c b/drivers/net/ethernet/mscc/ocelot_net.c
index 5efc07751c8d..f50dada2bb8e 100644
--- a/drivers/net/ethernet/mscc/ocelot_net.c
+++ b/drivers/net/ethernet/mscc/ocelot_net.c
@@ -194,15 +194,6 @@ void ocelot_port_devlink_teardown(struct ocelot *ocelot, int port)
 	devlink_port_unregister(dlp);
 }
 
-static struct devlink_port *ocelot_get_devlink_port(struct net_device *dev)
-{
-	struct ocelot_port_private *priv = netdev_priv(dev);
-	struct ocelot *ocelot = priv->port.ocelot;
-	int port = priv->port.index;
-
-	return &ocelot->devlink_ports[port];
-}
-
 int ocelot_setup_tc_cls_flower(struct ocelot_port_private *priv,
 			       struct flow_cls_offload *f,
 			       bool ingress)
@@ -925,7 +916,6 @@ static const struct net_device_ops ocelot_port_netdev_ops = {
 	.ndo_set_features		= ocelot_set_features,
 	.ndo_setup_tc			= ocelot_setup_tc,
 	.ndo_eth_ioctl			= ocelot_ioctl,
-	.ndo_get_devlink_port		= ocelot_get_devlink_port,
 };
 
 struct net_device *ocelot_port_to_netdev(struct ocelot *ocelot, int port)
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_app.h b/drivers/net/ethernet/netronome/nfp/nfp_app.h
index dd56207df246..90707346a4ef 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_app.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_app.h
@@ -445,6 +445,4 @@ int nfp_app_nic_vnic_alloc(struct nfp_app *app, struct nfp_net *nn,
 int nfp_app_nic_vnic_init_phy_port(struct nfp_pf *pf, struct nfp_app *app,
 				   struct nfp_net *nn, unsigned int id);
 
-struct devlink_port *nfp_devlink_get_devlink_port(struct net_device *netdev);
-
 #endif
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_devlink.c b/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
index f3f0f11d8b52..8bfd48d50ef0 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
@@ -362,14 +362,3 @@ void nfp_devlink_port_unregister(struct nfp_port *port)
 {
 	devl_port_unregister(&port->dl_port);
 }
-
-struct devlink_port *nfp_devlink_get_devlink_port(struct net_device *netdev)
-{
-	struct nfp_port *port;
-
-	port = nfp_port_from_netdev(netdev);
-	if (!port)
-		return NULL;
-
-	return &port->dl_port;
-}
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index 27f4786ace4f..8b9a909b0e97 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -2013,7 +2013,6 @@ const struct net_device_ops nfp_nfd3_netdev_ops = {
 	.ndo_get_phys_port_name	= nfp_net_get_phys_port_name,
 	.ndo_bpf		= nfp_net_xdp,
 	.ndo_xsk_wakeup		= nfp_net_xsk_wakeup,
-	.ndo_get_devlink_port	= nfp_devlink_get_devlink_port,
 	.ndo_bridge_getlink     = nfp_net_bridge_getlink,
 	.ndo_bridge_setlink     = nfp_net_bridge_setlink,
 };
@@ -2044,7 +2043,6 @@ const struct net_device_ops nfp_nfdk_netdev_ops = {
 	.ndo_features_check	= nfp_net_features_check,
 	.ndo_get_phys_port_name	= nfp_net_get_phys_port_name,
 	.ndo_bpf		= nfp_net_xdp,
-	.ndo_get_devlink_port	= nfp_devlink_get_devlink_port,
 	.ndo_bridge_getlink     = nfp_net_bridge_getlink,
 	.ndo_bridge_setlink     = nfp_net_bridge_setlink,
 };
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c
index 8b77582bdfa0..4706c15fdb54 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c
@@ -275,7 +275,6 @@ const struct net_device_ops nfp_repr_netdev_ops = {
 	.ndo_set_features	= nfp_port_set_features,
 	.ndo_set_mac_address    = eth_mac_addr,
 	.ndo_get_port_parent_id	= nfp_port_get_port_parent_id,
-	.ndo_get_devlink_port	= nfp_devlink_get_devlink_port,
 };
 
 void
diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
index 43d1fba22d41..38bfc3c2b334 100644
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -1380,13 +1380,6 @@ static void am65_cpsw_nuss_ndo_get_stats(struct net_device *dev,
 	stats->tx_dropped	= dev->stats.tx_dropped;
 }
 
-static struct devlink_port *am65_cpsw_ndo_get_devlink_port(struct net_device *ndev)
-{
-	struct am65_cpsw_port *port = am65_ndev_to_port(ndev);
-
-	return &port->devlink_port;
-}
-
 static const struct net_device_ops am65_cpsw_nuss_netdev_ops = {
 	.ndo_open		= am65_cpsw_nuss_ndo_slave_open,
 	.ndo_stop		= am65_cpsw_nuss_ndo_slave_stop,
@@ -1400,7 +1393,6 @@ static const struct net_device_ops am65_cpsw_nuss_netdev_ops = {
 	.ndo_vlan_rx_kill_vid	= am65_cpsw_nuss_ndo_slave_kill_vid,
 	.ndo_eth_ioctl		= am65_cpsw_nuss_ndo_slave_ioctl,
 	.ndo_setup_tc           = am65_cpsw_qos_ndo_setup_tc,
-	.ndo_get_devlink_port   = am65_cpsw_ndo_get_devlink_port,
 };
 
 static void am65_cpsw_nuss_mac_config(struct phylink_config *config, unsigned int mode,
diff --git a/drivers/net/netdevsim/netdev.c b/drivers/net/netdevsim/netdev.c
index 4eb90cc49e22..9e46200bb688 100644
--- a/drivers/net/netdevsim/netdev.c
+++ b/drivers/net/netdevsim/netdev.c
@@ -238,13 +238,6 @@ nsim_set_features(struct net_device *dev, netdev_features_t features)
 	return 0;
 }
 
-static struct devlink_port *nsim_get_devlink_port(struct net_device *dev)
-{
-	struct netdevsim *ns = netdev_priv(dev);
-
-	return &ns->nsim_dev_port->devlink_port;
-}
-
 static const struct net_device_ops nsim_netdev_ops = {
 	.ndo_start_xmit		= nsim_start_xmit,
 	.ndo_set_rx_mode	= nsim_set_rx_mode,
@@ -263,7 +256,6 @@ static const struct net_device_ops nsim_netdev_ops = {
 	.ndo_setup_tc		= nsim_setup_tc,
 	.ndo_set_features	= nsim_set_features,
 	.ndo_bpf		= nsim_bpf,
-	.ndo_get_devlink_port	= nsim_get_devlink_port,
 };
 
 static const struct net_device_ops nsim_vf_netdev_ops = {
@@ -275,7 +267,6 @@ static const struct net_device_ops nsim_vf_netdev_ops = {
 	.ndo_get_stats64	= nsim_get_stats64,
 	.ndo_setup_tc		= nsim_setup_tc,
 	.ndo_set_features	= nsim_set_features,
-	.ndo_get_devlink_port	= nsim_get_devlink_port,
 };
 
 static void nsim_setup(struct net_device *dev)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index bbb93be49063..637174e4219d 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1366,10 +1366,6 @@ struct netdev_net_notifier {
  *	queue id bound to an AF_XDP socket. The flags field specifies if
  *	only RX, only Tx, or both should be woken up using the flags
  *	XDP_WAKEUP_RX and XDP_WAKEUP_TX.
- * struct devlink_port *(*ndo_get_devlink_port)(struct net_device *dev);
- *	Get devlink port instance associated with a given netdev.
- *	Called with a reference on the netdevice and devlink locks only,
- *	rtnl_lock is not held.
  * int (*ndo_tunnel_ctl)(struct net_device *dev, struct ip_tunnel_parm *p,
  *			 int cmd);
  *	Add, change, delete or get information on an IPv4 tunnel.
@@ -1600,7 +1596,6 @@ struct net_device_ops {
 							  struct xdp_buff *xdp);
 	int			(*ndo_xsk_wakeup)(struct net_device *dev,
 						  u32 queue_id, u32 flags);
-	struct devlink_port *	(*ndo_get_devlink_port)(struct net_device *dev);
 	int			(*ndo_tunnel_ctl)(struct net_device *dev,
 						  struct ip_tunnel_parm *p, int cmd);
 	struct net_device *	(*ndo_get_peer_dev)(struct net_device *dev);
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index a72f6e3c9ed6..651937d69c8e 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -2165,13 +2165,6 @@ static const struct dcbnl_rtnl_ops __maybe_unused dsa_slave_dcbnl_ops = {
 	.ieee_delapp		= dsa_slave_dcbnl_ieee_delapp,
 };
 
-static struct devlink_port *dsa_slave_get_devlink_port(struct net_device *dev)
-{
-	struct dsa_port *dp = dsa_slave_to_port(dev);
-
-	return &dp->devlink_port;
-}
-
 static void dsa_slave_get_stats64(struct net_device *dev,
 				  struct rtnl_link_stats64 *s)
 {
@@ -2219,7 +2212,6 @@ static const struct net_device_ops dsa_slave_netdev_ops = {
 	.ndo_get_stats64	= dsa_slave_get_stats64,
 	.ndo_vlan_rx_add_vid	= dsa_slave_vlan_rx_add_vid,
 	.ndo_vlan_rx_kill_vid	= dsa_slave_vlan_rx_kill_vid,
-	.ndo_get_devlink_port	= dsa_slave_get_devlink_port,
 	.ndo_change_mtu		= dsa_slave_change_mtu,
 	.ndo_fill_forward_path	= dsa_slave_fill_forward_path,
 };
-- 
2.37.1

[patch net-next v2 13/13] net: expose devlink port over rtnetlink

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

Expose devlink port handle related to netdev over rtnetlink. Introduce a
new nested IFLA attribute to carry the info. Call into devlink code to
fill-up the nest with existing devlink attributes that are used over
devlink netlink.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
 include/net/devlink.h        | 14 +++++++++++++
 include/uapi/linux/if_link.h |  2 ++
 net/core/devlink.c           | 20 ++++++++++++++++++
 net/core/rtnetlink.c         | 39 ++++++++++++++++++++++++++++++++++++
 4 files changed, 75 insertions(+)

diff --git a/include/net/devlink.h b/include/net/devlink.h
index 7befad57afd4..fa6e936af1a5 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -1873,6 +1873,9 @@ int devlink_compat_phys_port_name_get(struct net_device *dev,
 int devlink_compat_switch_id_get(struct net_device *dev,
 				 struct netdev_phys_item_id *ppid);
 
+int devlink_nl_port_handle_fill(struct sk_buff *msg, struct devlink_port *devlink_port);
+size_t devlink_nl_port_handle_size(struct devlink_port *devlink_port);
+
 #else
 
 static inline struct devlink *devlink_try_get(struct devlink *devlink)
@@ -1909,6 +1912,17 @@ devlink_compat_switch_id_get(struct net_device *dev,
 	return -EOPNOTSUPP;
 }
 
+static inline int
+devlink_nl_port_handle_fill(struct sk_buff *msg, struct devlink_port *devlink_port)
+{
+	return 0;
+}
+
+static inline size_t devlink_nl_port_handle_size(struct devlink_port *devlink_port)
+{
+	return 0;
+}
+
 #endif
 
 #endif /* _NET_DEVLINK_H_ */
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 5e7a1041df3a..9af9da1db4e8 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -372,6 +372,8 @@ enum {
 	IFLA_TSO_MAX_SEGS,
 	IFLA_ALLMULTI,		/* Allmulti count: > 0 means acts ALLMULTI */
 
+	IFLA_DEVLINK_PORT,
+
 	__IFLA_MAX
 };
 
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 2a42e49f6a4e..d2ee33044b2e 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -880,6 +880,26 @@ static int devlink_nl_put_nested_handle(struct sk_buff *msg, struct devlink *dev
 	return -EMSGSIZE;
 }
 
+int devlink_nl_port_handle_fill(struct sk_buff *msg, struct devlink_port *devlink_port)
+{
+	if (devlink_nl_put_handle(msg, devlink_port->devlink))
+		return -EMSGSIZE;
+	if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
+		return -EMSGSIZE;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_nl_port_handle_fill);
+
+size_t devlink_nl_port_handle_size(struct devlink_port *devlink_port)
+{
+	struct devlink *devlink = devlink_port->devlink;
+
+	return nla_total_size(strlen(devlink->dev->bus->name) + 1) /* DEVLINK_ATTR_BUS_NAME */
+	     + nla_total_size(strlen(dev_name(devlink->dev)) + 1) /* DEVLINK_ATTR_DEV_NAME */
+	     + nla_total_size(4); /* DEVLINK_ATTR_PORT_INDEX */
+}
+EXPORT_SYMBOL_GPL(devlink_nl_port_handle_size);
+
 struct devlink_reload_combination {
 	enum devlink_reload_action action;
 	enum devlink_reload_limit limit;
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 74864dc46a7e..e034c0c8e6cc 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -53,6 +53,7 @@
 #include <net/fib_rules.h>
 #include <net/rtnetlink.h>
 #include <net/net_namespace.h>
+#include <net/devlink.h>
 
 #include "dev.h"
 
@@ -1038,6 +1039,16 @@ static size_t rtnl_proto_down_size(const struct net_device *dev)
 	return size;
 }
 
+static size_t rtnl_devlink_port_size(const struct net_device *dev)
+{
+	size_t size = nla_total_size(0); /* nest IFLA_DEVLINK_PORT */
+
+	if (dev->devlink_port)
+		size += devlink_nl_port_handle_size(dev->devlink_port);
+
+	return size;
+}
+
 static noinline size_t if_nlmsg_size(const struct net_device *dev,
 				     u32 ext_filter_mask)
 {
@@ -1091,6 +1102,7 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev,
 	       + nla_total_size(4)  /* IFLA_MAX_MTU */
 	       + rtnl_prop_list_size(dev)
 	       + nla_total_size(MAX_ADDR_LEN) /* IFLA_PERM_ADDRESS */
+	       + rtnl_devlink_port_size(dev)
 	       + 0;
 }
 
@@ -1728,6 +1740,30 @@ static int rtnl_fill_proto_down(struct sk_buff *skb,
 	return -EMSGSIZE;
 }
 
+static int rtnl_fill_devlink_port(struct sk_buff *skb,
+				  const struct net_device *dev)
+{
+	struct nlattr *devlink_port_nest;
+	int ret;
+
+	devlink_port_nest = nla_nest_start(skb, IFLA_DEVLINK_PORT);
+	if (!devlink_port_nest)
+		return -EMSGSIZE;
+
+	if (dev->devlink_port) {
+		ret = devlink_nl_port_handle_fill(skb, dev->devlink_port);
+		if (ret < 0)
+			goto nest_cancel;
+	}
+
+	nla_nest_end(skb, devlink_port_nest);
+	return 0;
+
+nest_cancel:
+	nla_nest_cancel(skb, devlink_port_nest);
+	return ret;
+}
+
 static int rtnl_fill_ifinfo(struct sk_buff *skb,
 			    struct net_device *dev, struct net *src_net,
 			    int type, u32 pid, u32 seq, u32 change,
@@ -1865,6 +1901,9 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb,
 			   dev->dev.parent->bus->name))
 		goto nla_put_failure;
 
+	if (rtnl_fill_devlink_port(skb, dev))
+		goto nla_put_failure;
+
 	nlmsg_end(skb, nlh);
 	return 0;
 
-- 
2.37.1

Re: [patch net-next v2 00/13] net: fix netdev to devlink_port linkage and expose to user

[Jakub Kicinski]

On Mon,  3 Oct 2022 12:51:51 +0200 Jiri Pirko wrote:
> Currently, the info about linkage from netdev to the related
> devlink_port instance is done using ndo_get_devlink_port().
> This is not sufficient, as it is up to the driver to implement it and
> some of them don't do that. Also it leads to a lot of unnecessary
> boilerplate code in all the drivers.
> 
> Instead of that, introduce a possibility for driver to expose this
> relationship by new SET_NETDEV_DEVLINK_PORT macro which stores it into
> dev->devlink_port. It is ensured by the driver init/fini flows that
> the devlink_port pointer does not change during the netdev lifetime.
> Devlink port is always registered before netdev register and
> unregistered after netdev unregister.
> 
> Benefit from this linkage setup and remove explicit calls from driver
> to devlink_port_type_eth_set() and clear(). Many of the driver
> didn't use it correctly anyway. Let the devlink.c to track associated
> netdev events and adjust type and type pointer accordingly. Also
> use this events to to keep track on ifname change and remove RTNL lock
> taking from devlink_nl_port_fill().
> 
> Finally, remove the ndo_get_devlink_port() ndo which is no longer used
> and expose devlink_port handle as a new netdev netlink attribute to the
> user. That way, during the ifname->devlink_port lookup, userspace app
> does not have to dump whole devlink port list and instead it can just
> do a simple RTM_GETLINK query.

Would you be okay if we deferred until 6.2?

It's technically past the deadline and some odd driver could regress.

Re: [patch net-next v2 06/13] net: make drivers to use SET_NETDEV_DEVLINK_PORT to set devlink_port

[Jakub Kicinski]

On Mon,  3 Oct 2022 12:51:57 +0200 Jiri Pirko wrote:
> From: Jiri Pirko <jiri@nvidia.com>
> 
> Benefit from the previously implemented tracking of netdev events in
> devlink code and instead of calling  devlink_port_type_eth_set() and
> devlink_port_type_clear() to set devlink port type and link to related
> netdev, use SET_NETDEV_DEVLINK_PORT() macro to assign devlink_port
> pointer to netdevice which is about to be registered.

drivers/net/ethernet/mscc/ocelot_vsc7514.c:380:23: warning: variable 'ocelot_port' set but not used [-Wunused-but-set-variable]
                struct ocelot_port *ocelot_port;
                                    ^

Re: [patch net-next v2 00/13] net: fix netdev to devlink_port linkage and expose to user

[Jiri Pirko]

Mon, Oct 03, 2022 at 06:45:56PM CEST, kuba@kernel.org wrote:
>On Mon,  3 Oct 2022 12:51:51 +0200 Jiri Pirko wrote:
>> Currently, the info about linkage from netdev to the related
>> devlink_port instance is done using ndo_get_devlink_port().
>> This is not sufficient, as it is up to the driver to implement it and
>> some of them don't do that. Also it leads to a lot of unnecessary
>> boilerplate code in all the drivers.
>> 
>> Instead of that, introduce a possibility for driver to expose this
>> relationship by new SET_NETDEV_DEVLINK_PORT macro which stores it into
>> dev->devlink_port. It is ensured by the driver init/fini flows that
>> the devlink_port pointer does not change during the netdev lifetime.
>> Devlink port is always registered before netdev register and
>> unregistered after netdev unregister.
>> 
>> Benefit from this linkage setup and remove explicit calls from driver
>> to devlink_port_type_eth_set() and clear(). Many of the driver
>> didn't use it correctly anyway. Let the devlink.c to track associated
>> netdev events and adjust type and type pointer accordingly. Also
>> use this events to to keep track on ifname change and remove RTNL lock
>> taking from devlink_nl_port_fill().
>> 
>> Finally, remove the ndo_get_devlink_port() ndo which is no longer used
>> and expose devlink_port handle as a new netdev netlink attribute to the
>> user. That way, during the ifname->devlink_port lookup, userspace app
>> does not have to dump whole devlink port list and instead it can just
>> do a simple RTM_GETLINK query.
>
>Would you be okay if we deferred until 6.2?
>
>It's technically past the deadline and some odd driver could regress.

Sure.