netdev - [PATCH net-next 08/12] mlxsw: Add APIs to init/fini PCI port

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Message-ID: <6189497bf72fc28c44c55195f7f7759755014dc4.1738665783.git.petrm@nvidia.com>
Date: Tue, 4 Feb 2025 12:05:03 +0100
From: Petr Machata <petrm@...dia.com>
To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
	<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>, Andrew Lunn <andrew+netdev@...n.ch>,
	<netdev@...r.kernel.org>
CC: Amit Cohen <amcohen@...dia.com>, Ido Schimmel <idosch@...dia.com>, "Petr
 Machata" <petrm@...dia.com>, Alexei Starovoitov <ast@...nel.org>, "Daniel
 Borkmann" <daniel@...earbox.net>, Jesper Dangaard Brouer <hawk@...nel.org>,
	John Fastabend <john.fastabend@...il.com>, <bpf@...r.kernel.org>,
	<mlxsw@...dia.com>
Subject: [PATCH net-next 08/12] mlxsw: Add APIs to init/fini PCI port

From: Amit Cohen <amcohen@...dia.com>

The previous patch added PCI ports array, to store the associated netdevice
for each local port. Add APIs which set/unset netdevice for specific local
port, these APIs will be used from mlxsw_sp_port_create() and
mlxsw_sp_port_remove(). For now, store only netdevice pointer, next patches
will extend this structure.

Signed-off-by: Amit Cohen <amcohen@...dia.com>
Reviewed-by: Ido Schimmel <idosch@...dia.com>
Signed-off-by: Petr Machata <petrm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/core.c | 13 +++++++++++++
 drivers/net/ethernet/mellanox/mlxsw/core.h |  6 ++++++
 drivers/net/ethernet/mellanox/mlxsw/pci.c  | 21 +++++++++++++++++++++
 3 files changed, 40 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
index 392c0355d589..628530e01b19 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -219,6 +219,19 @@ mlxsw_core_flood_mode(struct mlxsw_core *mlxsw_core)
 }
 EXPORT_SYMBOL(mlxsw_core_flood_mode);
 
+void mlxsw_core_bus_port_init(struct mlxsw_core *mlxsw_core, u16 local_port,
+			      struct net_device *netdev)
+{
+	mlxsw_core->bus->port_init(mlxsw_core->bus_priv, local_port, netdev);
+}
+EXPORT_SYMBOL(mlxsw_core_bus_port_init);
+
+void mlxsw_core_bus_port_fini(struct mlxsw_core *mlxsw_core, u16 local_port)
+{
+	mlxsw_core->bus->port_fini(mlxsw_core->bus_priv, local_port);
+}
+EXPORT_SYMBOL(mlxsw_core_bus_port_fini);
+
 void *mlxsw_core_driver_priv(struct mlxsw_core *mlxsw_core)
 {
 	return mlxsw_core->driver_priv;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h
index 72eb7dbf57ce..506fe50acdec 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.h
@@ -40,6 +40,9 @@ enum mlxsw_cmd_mbox_config_profile_lag_mode
 mlxsw_core_lag_mode(struct mlxsw_core *mlxsw_core);
 enum mlxsw_cmd_mbox_config_profile_flood_mode
 mlxsw_core_flood_mode(struct mlxsw_core *mlxsw_core);
+void mlxsw_core_bus_port_init(struct mlxsw_core *mlxsw_core, u16 local_port,
+			      struct net_device *netdev);
+void mlxsw_core_bus_port_fini(struct mlxsw_core *mlxsw_core, u16 local_port);
 
 void *mlxsw_core_driver_priv(struct mlxsw_core *mlxsw_core);
 
@@ -495,6 +498,9 @@ struct mlxsw_bus {
 	u32 (*read_frc_l)(void *bus_priv);
 	u32 (*read_utc_sec)(void *bus_priv);
 	u32 (*read_utc_nsec)(void *bus_priv);
+	void (*port_init)(void *bus_priv, u16 local_port,
+			  struct net_device *netdev);
+	void (*port_fini)(void *bus_priv, u16 local_port);
 	enum mlxsw_cmd_mbox_config_profile_lag_mode (*lag_mode)(void *bus_priv);
 	enum mlxsw_cmd_mbox_config_profile_flood_mode (*flood_mode)(void *priv);
 	u8 features;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c
index 563b9c0578f8..bd6c772a3384 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/pci.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c
@@ -2434,6 +2434,25 @@ mlxsw_pci_flood_mode(void *bus_priv)
 	return mlxsw_pci->flood_mode;
 }
 
+static void mlxsw_pci_port_init(void *bus_priv, u16 local_port,
+				struct net_device *netdev)
+{
+	struct mlxsw_pci *mlxsw_pci = bus_priv;
+	struct mlxsw_pci_port *pci_port;
+
+	pci_port = &mlxsw_pci->pci_ports[local_port];
+	pci_port->netdev = netdev;
+}
+
+static void mlxsw_pci_port_fini(void *bus_priv, u16 local_port)
+{
+	struct mlxsw_pci *mlxsw_pci = bus_priv;
+	struct mlxsw_pci_port *pci_port;
+
+	pci_port = &mlxsw_pci->pci_ports[local_port];
+	pci_port->netdev = NULL;
+}
+
 static const struct mlxsw_bus mlxsw_pci_bus = {
 	.kind			= "pci",
 	.init			= mlxsw_pci_init,
@@ -2445,6 +2464,8 @@ static const struct mlxsw_bus mlxsw_pci_bus = {
 	.read_frc_l		= mlxsw_pci_read_frc_l,
 	.read_utc_sec		= mlxsw_pci_read_utc_sec,
 	.read_utc_nsec		= mlxsw_pci_read_utc_nsec,
+	.port_init		= mlxsw_pci_port_init,
+	.port_fini		= mlxsw_pci_port_fini,
 	.lag_mode		= mlxsw_pci_lag_mode,
 	.flood_mode		= mlxsw_pci_flood_mode,
 	.features		= MLXSW_BUS_F_TXRX | MLXSW_BUS_F_RESET,
-- 
2.47.0