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Message-ID: <576BCDCE2AE928D0+20240726100301.21416-8-mengyuanlou@net-swift.com>
Date: Fri, 26 Jul 2024 18:02:58 +0800
From: Mengyuan Lou <mengyuanlou@...-swift.com>
To: netdev@...r.kernel.org
Cc: jiawenwu@...-swift.com,
Mengyuan Lou <mengyuanlou@...-swift.com>
Subject: [RFC PATCH net-next v5 07/10] net: libwx: allocate devlink for devlink port
Make devlink allocation function generic to use it for PF and for VF.
Add function for PF/VF devlink port creation. It will be used in
wangxun NICs.
Signed-off-by: Mengyuan Lou <mengyuanlou@...-swift.com>
---
drivers/net/ethernet/wangxun/libwx/Makefile | 2 +-
.../net/ethernet/wangxun/libwx/wx_devlink.c | 208 ++++++++++++++++++
.../net/ethernet/wangxun/libwx/wx_devlink.h | 13 ++
drivers/net/ethernet/wangxun/libwx/wx_sriov.c | 13 +-
drivers/net/ethernet/wangxun/libwx/wx_sriov.h | 1 +
drivers/net/ethernet/wangxun/libwx/wx_type.h | 14 ++
6 files changed, 249 insertions(+), 2 deletions(-)
create mode 100644 drivers/net/ethernet/wangxun/libwx/wx_devlink.c
create mode 100644 drivers/net/ethernet/wangxun/libwx/wx_devlink.h
diff --git a/drivers/net/ethernet/wangxun/libwx/Makefile b/drivers/net/ethernet/wangxun/libwx/Makefile
index 5b996d973d29..643a5e947ba9 100644
--- a/drivers/net/ethernet/wangxun/libwx/Makefile
+++ b/drivers/net/ethernet/wangxun/libwx/Makefile
@@ -4,4 +4,4 @@
obj-$(CONFIG_LIBWX) += libwx.o
-libwx-objs := wx_hw.o wx_lib.o wx_ethtool.o wx_mbx.o wx_sriov.o
+libwx-objs := wx_hw.o wx_lib.o wx_ethtool.o wx_mbx.o wx_sriov.o wx_devlink.o
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_devlink.c b/drivers/net/ethernet/wangxun/libwx/wx_devlink.c
new file mode 100644
index 000000000000..b39da37c0842
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/libwx/wx_devlink.c
@@ -0,0 +1,208 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2015 - 2024 Beijing WangXun Technology Co., Ltd. */
+
+#include <linux/vmalloc.h>
+#include <linux/pci.h>
+
+#include "wx_type.h"
+#include "wx_sriov.h"
+#include "wx_devlink.h"
+
+static const struct devlink_ops wx_pf_devlink_ops = {
+};
+
+static void wx_devlink_free(void *devlink_ptr)
+{
+ devlink_unregister((struct devlink *)devlink_ptr);
+ devlink_free((struct devlink *)devlink_ptr);
+}
+
+struct wx_dl_priv *wx_create_devlink(struct device *dev)
+{
+ struct devlink *devlink;
+
+ devlink = devlink_alloc(&wx_pf_devlink_ops, sizeof(devlink), dev);
+ if (!devlink)
+ return NULL;
+
+ /* Add an action to teardown the devlink when unwinding the driver */
+ if (devm_add_action_or_reset(dev, wx_devlink_free, devlink))
+ return NULL;
+
+ devlink_register(devlink);
+
+ return devlink_priv(devlink);
+}
+EXPORT_SYMBOL(wx_create_devlink);
+
+/**
+ * wx_devlink_set_switch_id - Set unique switch id based on pci dsn
+ * @wx: the PF to create a devlink port for
+ * @ppid: struct with switch id information
+ */
+static void wx_devlink_set_switch_id(struct wx *wx,
+ struct netdev_phys_item_id *ppid)
+{
+ struct pci_dev *pdev = wx->pdev;
+ u64 id;
+
+ id = pci_get_dsn(pdev);
+
+ ppid->id_len = sizeof(id);
+ put_unaligned_be64(id, &ppid->id);
+}
+
+/**
+ * wx_devlink_create_pf_port - Create a devlink port for this PF
+ * @wx: the PF to create a devlink port for
+ *
+ * Create and register a devlink_port for this PF.
+ * This function has to be called under devl_lock.
+ *
+ * Return: zero on success or an error code on failure.
+ */
+int wx_devlink_create_pf_port(struct wx *wx)
+{
+ struct devlink *devlink = priv_to_devlink(wx->dl_priv);
+ struct devlink_port_attrs attrs = {};
+ int err;
+
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
+ attrs.phys.port_number = wx->bus.func;
+ wx_devlink_set_switch_id(wx, &attrs.switch_id);
+ devlink_port_attrs_set(&wx->devlink_port, &attrs);
+ err = devlink_port_register(devlink, &wx->devlink_port, 0);
+ if (err) {
+ wx_err(wx, "Failed to create devlink port for PF%d, error %d\n",
+ wx->bus.func, err);
+ return err;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(wx_devlink_create_pf_port);
+
+/**
+ * wx_devlink_destroy_pf_port - Destroy the devlink_port for this PF
+ * @wx: the PF to cleanup
+ *
+ * Unregisters the devlink_port structure associated with this PF.
+ * This function has to be called under devl_lock.
+ */
+void wx_devlink_destroy_pf_port(struct wx *wx)
+{
+ devl_port_unregister(&wx->devlink_port);
+}
+EXPORT_SYMBOL(wx_devlink_destroy_pf_port);
+
+/**
+ * wx_devlink_port_get_vf_fn_mac - .port_fn_hw_addr_get devlink handler
+ * @port: devlink port structure
+ * @hw_addr: MAC address of the port
+ * @hw_addr_len: length of MAC address
+ * @extack: extended netdev ack structure
+ *
+ * Callback for the devlink .port_fn_hw_addr_get operation
+ * Return: zero on success or an error code on failure.
+ */
+static int wx_devlink_port_get_vf_fn_mac(struct devlink_port *port,
+ u8 *hw_addr, int *hw_addr_len,
+ struct netlink_ext_ack *extack)
+{
+ struct vf_data_storage *vfinfo = container_of(port,
+ struct vf_data_storage,
+ devlink_port);
+ struct devlink_port_attrs *attrs = &port->attrs;
+ struct devlink_port_pci_vf_attrs *pci_vf;
+ struct wx *wx = vfinfo->vf_priv_wx;
+ u16 vf_id;
+
+ pci_vf = &attrs->pci_vf;
+ vf_id = pci_vf->vf;
+
+ ether_addr_copy(hw_addr, wx->vfinfo[vf_id].vf_mac_addr);
+ *hw_addr_len = ETH_ALEN;
+
+ return 0;
+}
+
+/**
+ * wx_devlink_port_set_vf_fn_mac - .port_fn_hw_addr_set devlink handler
+ * @port: devlink port structure
+ * @hw_addr: MAC address of the port
+ * @hw_addr_len: length of MAC address
+ * @extack: extended netdev ack structure
+ *
+ * Callback for the devlink .port_fn_hw_addr_set operation
+ * Return: zero on success or an error code on failure.
+ */
+static int wx_devlink_port_set_vf_fn_mac(struct devlink_port *port,
+ const u8 *hw_addr,
+ int hw_addr_len,
+ struct netlink_ext_ack *extack)
+
+{
+ struct vf_data_storage *vfinfo = container_of(port,
+ struct vf_data_storage,
+ devlink_port);
+ struct devlink_port_attrs *attrs = &port->attrs;
+ struct devlink_port_pci_vf_attrs *pci_vf;
+ struct wx *wx = vfinfo->vf_priv_wx;
+ int ret = 0;
+ u16 vf_id;
+
+ pci_vf = &attrs->pci_vf;
+ vf_id = pci_vf->vf;
+
+ if (!is_valid_ether_addr(hw_addr) || vf_id >= wx->num_vfs)
+ return -EINVAL;
+
+ ret = wx_set_vf_mac(wx, vf_id, hw_addr);
+ if (ret >= 0) {
+ wx->vfinfo[vf_id].pf_set_mac = true;
+ if (!netif_running(wx->netdev))
+ wx_err(wx, "Bring the PF device up before use vfs\n");
+ } else {
+ wx_err(wx, "The VF MAC address was NOT set due to invalid\n");
+ }
+
+ return 0;
+}
+
+static const struct devlink_port_ops wx_devlink_vf_port_ops = {
+ .port_fn_hw_addr_get = wx_devlink_port_get_vf_fn_mac,
+ .port_fn_hw_addr_set = wx_devlink_port_set_vf_fn_mac,
+};
+
+int wx_devlink_create_vf_port(struct wx *wx, int vf_id)
+{
+ struct devlink *devlink = priv_to_devlink(wx->dl_priv);
+ struct devlink_port_attrs attrs = {};
+ struct devlink_port *devlink_port;
+ int err;
+
+ devlink_port = &wx->vfinfo[vf_id].devlink_port;
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_PCI_VF;
+ attrs.pci_vf.pf = wx->bus.func;
+ attrs.pci_vf.vf = vf_id;
+
+ wx_devlink_set_switch_id(wx, &attrs.switch_id);
+ devlink_port_attrs_set(devlink_port, &attrs);
+ err = devl_port_register_with_ops(devlink, devlink_port, vf_id + 1,
+ &wx_devlink_vf_port_ops);
+ if (err) {
+ wx_err(wx, "Failed to create devlink port for VF %d, error %d\n",
+ vf_id, err);
+ return err;
+ }
+
+ return 0;
+}
+
+void wx_devlink_destroy_vf_port(struct wx *wx)
+{
+ int i;
+
+ for (i = 0; i < wx->num_vfs; i++)
+ devl_port_unregister(&wx->vfinfo[i].devlink_port);
+}
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_devlink.h b/drivers/net/ethernet/wangxun/libwx/wx_devlink.h
new file mode 100644
index 000000000000..0754579ed304
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/libwx/wx_devlink.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2015 - 2024 Beijing WangXun Technology Co., Ltd. */
+
+#ifndef _WX_DEVLINK_H_
+#define _WX_DEVLINK_H_
+
+struct wx_dl_priv *wx_create_devlink(struct device *dev);
+int wx_devlink_create_pf_port(struct wx *wx);
+void wx_devlink_destroy_pf_port(struct wx *wx);
+int wx_devlink_create_vf_port(struct wx *wx, int vf_id);
+void wx_devlink_destroy_vf_port(struct wx *wx);
+
+#endif /* _WX_DEVLINK_H_ */
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_sriov.c b/drivers/net/ethernet/wangxun/libwx/wx_sriov.c
index 08738738d02e..88ef82f1a1a3 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_sriov.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_sriov.c
@@ -7,6 +7,7 @@
#include "wx_type.h"
#include "wx_hw.h"
#include "wx_mbx.h"
+#include "wx_devlink.h"
#include "wx_sriov.h"
static void wx_vf_configuration(struct pci_dev *pdev, int event_mask)
@@ -92,6 +93,7 @@ static int __wx_enable_sriov(struct wx *wx, u8 num_vfs)
wr32m(wx, WX_PSR_CTL, WX_PSR_CTL_SW_EN, WX_PSR_CTL_SW_EN);
for (i = 0; i < num_vfs; i++) {
+ wx->vfinfo[i].vf_priv_wx = wx;
/* enable spoof checking for all VFs */
wx->vfinfo[i].spoofchk_enabled = true;
wx->vfinfo[i].link_enable = true;
@@ -130,6 +132,7 @@ void wx_disable_sriov(struct wx *wx)
else
wx_err(wx, "Unloading driver while VFs are assigned.\n");
+ wx_devlink_destroy_vf_port(wx);
/* clear flags and free allloced data */
wx_sriov_clear_data(wx);
}
@@ -158,7 +161,15 @@ static int wx_pci_sriov_enable(struct pci_dev *dev,
goto err_out;
}
+ for (i = 0; i < wx->num_vfs; i++) {
+ err = wx_devlink_create_vf_port(wx, i);
+ if (err)
+ goto err_dis_sriov;
+ }
+
return num_vfs;
+err_dis_sriov:
+ pci_disable_sriov(dev);
err_out:
wx_sriov_clear_data(wx);
return err;
@@ -210,7 +221,7 @@ int wx_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
}
EXPORT_SYMBOL(wx_pci_sriov_configure);
-static int wx_set_vf_mac(struct wx *wx, u16 vf, const u8 *mac_addr)
+int wx_set_vf_mac(struct wx *wx, u16 vf, const u8 *mac_addr)
{
u8 hw_addr[ETH_ALEN];
int ret = 0;
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_sriov.h b/drivers/net/ethernet/wangxun/libwx/wx_sriov.h
index 2aa68947c0d3..e876cb03c2c9 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_sriov.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_sriov.h
@@ -6,6 +6,7 @@
void wx_disable_sriov(struct wx *wx);
int wx_pci_sriov_configure(struct pci_dev *pdev, int num_vfs);
+int wx_set_vf_mac(struct wx *wx, u16 vf, const u8 *mac_addr);
void wx_msg_task(struct wx *wx);
void wx_disable_vf_rx_tx(struct wx *wx);
void wx_ping_all_vfs_with_link_status(struct wx *wx, bool link_up);
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index e50a75e7c58b..a8722f69cebb 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -8,6 +8,7 @@
#include <linux/netdevice.h>
#include <linux/if_vlan.h>
#include <linux/phylink.h>
+#include <net/devlink.h>
#include <net/ip.h>
#define WX_NCSI_SUP 0x8000
@@ -1084,6 +1085,10 @@ enum wx_state {
struct vf_data_storage {
struct pci_dev *vfdev;
+ struct wx *vf_priv_wx;
+ /* vf devlink port data */
+ struct devlink_port devlink_port;
+
unsigned char vf_mac_addr[ETH_ALEN];
bool spoofchk_enabled;
bool link_enable;
@@ -1119,6 +1124,10 @@ enum wx_pf_flags {
WX_PF_FLAGS_NBITS /* must be last */
};
+struct wx_dl_priv {
+ struct wx *priv_wx;
+};
+
struct wx {
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
DECLARE_BITMAP(state, WX_STATE_NBITS);
@@ -1128,6 +1137,11 @@ struct wx {
u8 __iomem *hw_addr;
struct pci_dev *pdev;
struct net_device *netdev;
+
+ /* devlink port data */
+ struct devlink_port devlink_port;
+ struct wx_dl_priv *dl_priv;
+
struct wx_bus_info bus;
struct wx_mbx_info mbx;
struct wx_mac_info mac;
--
2.43.2
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