From: Leon Romanovsky <[email protected]>
All kernel devlink implementations call to devlink_alloc() during
initialization routine for specific device which is used later as
a parent device for devlink_register().
Such late device assignment causes to the situation which requires us to
call to device_register() before setting other parameters, but that call
opens devlink to the world and makes accessible for the netlink users.
Any attempt to move devlink_register() to be the last call generates the
following error due to access to the devlink->dev pointer.
[ 8.758862] devlink_nl_param_fill+0x2e8/0xe50
[ 8.760305] devlink_param_notify+0x6d/0x180
[ 8.760435] __devlink_params_register+0x2f1/0x670
[ 8.760558] devlink_params_register+0x1e/0x20
The simple change of API to set devlink device in the devlink_alloc()
instead of devlink_register() fixes all this above and ensures that
prior to call to devlink_register() everything already set.
Signed-off-by: Leon Romanovsky <[email protected]>
---
.../net/ethernet/broadcom/bnxt/bnxt_devlink.c | 9 ++++---
.../net/ethernet/cavium/liquidio/lio_main.c | 5 ++--
.../freescale/dpaa2/dpaa2-eth-devlink.c | 5 ++--
.../hisilicon/hns3/hns3pf/hclge_devlink.c | 4 +--
.../hisilicon/hns3/hns3vf/hclgevf_devlink.c | 7 ++---
.../net/ethernet/huawei/hinic/hinic_devlink.c | 8 +++---
.../net/ethernet/huawei/hinic/hinic_devlink.h | 4 +--
.../net/ethernet/huawei/hinic/hinic_hw_dev.c | 2 +-
.../net/ethernet/huawei/hinic/hinic_main.c | 2 +-
drivers/net/ethernet/intel/ice/ice_devlink.c | 4 +--
.../marvell/octeontx2/af/rvu_devlink.c | 5 ++--
.../marvell/prestera/prestera_devlink.c | 7 ++---
.../marvell/prestera/prestera_devlink.h | 2 +-
.../ethernet/marvell/prestera/prestera_main.c | 2 +-
drivers/net/ethernet/mellanox/mlx4/main.c | 4 +--
.../net/ethernet/mellanox/mlx5/core/devlink.c | 9 ++++---
.../net/ethernet/mellanox/mlx5/core/devlink.h | 4 +--
.../net/ethernet/mellanox/mlx5/core/main.c | 4 +--
.../mellanox/mlx5/core/sf/dev/driver.c | 2 +-
drivers/net/ethernet/mellanox/mlxsw/core.c | 5 ++--
drivers/net/ethernet/mscc/ocelot_vsc7514.c | 5 ++--
drivers/net/ethernet/netronome/nfp/nfp_main.c | 2 +-
.../net/ethernet/netronome/nfp/nfp_net_main.c | 2 +-
.../ethernet/pensando/ionic/ionic_devlink.c | 4 +--
drivers/net/ethernet/qlogic/qed/qed_devlink.c | 5 ++--
drivers/net/ethernet/ti/am65-cpsw-nuss.c | 4 +--
drivers/net/ethernet/ti/cpsw_new.c | 4 +--
drivers/net/netdevsim/dev.c | 4 +--
drivers/ptp/ptp_ocp.c | 26 +++----------------
drivers/staging/qlge/qlge_main.c | 5 ++--
include/net/devlink.h | 10 ++++---
net/core/devlink.c | 15 +++++------
net/dsa/dsa2.c | 5 ++--
33 files changed, 91 insertions(+), 94 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
index 64381be935a8..2cd8bb37e641 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
@@ -743,14 +743,17 @@ static void bnxt_dl_params_unregister(struct bnxt *bp)
int bnxt_dl_register(struct bnxt *bp)
{
+ const struct devlink_ops *devlink_ops;
struct devlink_port_attrs attrs = {};
struct devlink *dl;
int rc;
if (BNXT_PF(bp))
- dl = devlink_alloc(&bnxt_dl_ops, sizeof(struct bnxt_dl));
+ devlink_ops = &bnxt_dl_ops;
else
- dl = devlink_alloc(&bnxt_vf_dl_ops, sizeof(struct bnxt_dl));
+ devlink_ops = &bnxt_vf_dl_ops;
+
+ dl = devlink_alloc(devlink_ops, sizeof(struct bnxt_dl), &bp->pdev->dev);
if (!dl) {
netdev_warn(bp->dev, "devlink_alloc failed\n");
return -ENOMEM;
@@ -763,7 +766,7 @@ int bnxt_dl_register(struct bnxt *bp)
bp->hwrm_spec_code > 0x10803)
bp->eswitch_mode = DEVLINK_ESWITCH_MODE_LEGACY;
- rc = devlink_register(dl, &bp->pdev->dev);
+ rc = devlink_register(dl);
if (rc) {
netdev_warn(bp->dev, "devlink_register failed. rc=%d\n", rc);
goto err_dl_free;
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c
index af116ef83bad..2907e13b9df6 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c
@@ -3750,7 +3750,8 @@ static int setup_nic_devices(struct octeon_device *octeon_dev)
}
devlink = devlink_alloc(&liquidio_devlink_ops,
- sizeof(struct lio_devlink_priv));
+ sizeof(struct lio_devlink_priv),
+ &octeon_dev->pci_dev->dev);
if (!devlink) {
dev_err(&octeon_dev->pci_dev->dev, "devlink alloc failed\n");
goto setup_nic_dev_free;
@@ -3759,7 +3760,7 @@ static int setup_nic_devices(struct octeon_device *octeon_dev)
lio_devlink = devlink_priv(devlink);
lio_devlink->oct = octeon_dev;
- if (devlink_register(devlink, &octeon_dev->pci_dev->dev)) {
+ if (devlink_register(devlink)) {
devlink_free(devlink);
dev_err(&octeon_dev->pci_dev->dev,
"devlink registration failed\n");
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c
index 8e09f65ea295..605a39f892b9 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c
@@ -196,7 +196,8 @@ int dpaa2_eth_dl_register(struct dpaa2_eth_priv *priv)
struct dpaa2_eth_devlink_priv *dl_priv;
int err;
- priv->devlink = devlink_alloc(&dpaa2_eth_devlink_ops, sizeof(*dl_priv));
+ priv->devlink =
+ devlink_alloc(&dpaa2_eth_devlink_ops, sizeof(*dl_priv), dev);
if (!priv->devlink) {
dev_err(dev, "devlink_alloc failed\n");
return -ENOMEM;
@@ -204,7 +205,7 @@ int dpaa2_eth_dl_register(struct dpaa2_eth_priv *priv)
dl_priv = devlink_priv(priv->devlink);
dl_priv->dpaa2_priv = priv;
- err = devlink_register(priv->devlink, dev);
+ err = devlink_register(priv->devlink);
if (err) {
dev_err(dev, "devlink_register() = %d\n", err);
goto devlink_free;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c
index 06d29945d4e1..448f29aa4e6b 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_devlink.c
@@ -112,14 +112,14 @@ int hclge_devlink_init(struct hclge_dev *hdev)
int ret;
devlink = devlink_alloc(&hclge_devlink_ops,
- sizeof(struct hclge_devlink_priv));
+ sizeof(struct hclge_devlink_priv), &pdev->dev);
if (!devlink)
return -ENOMEM;
priv = devlink_priv(devlink);
priv->hdev = hdev;
- ret = devlink_register(devlink, &pdev->dev);
+ ret = devlink_register(devlink);
if (ret) {
dev_err(&pdev->dev, "failed to register devlink, ret = %d\n",
ret);
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c
index 21a45279fd99..1e6061fb8ed4 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c
@@ -112,15 +112,16 @@ int hclgevf_devlink_init(struct hclgevf_dev *hdev)
struct devlink *devlink;
int ret;
- devlink = devlink_alloc(&hclgevf_devlink_ops,
- sizeof(struct hclgevf_devlink_priv));
+ devlink =
+ devlink_alloc(&hclgevf_devlink_ops,
+ sizeof(struct hclgevf_devlink_priv), &pdev->dev);
if (!devlink)
return -ENOMEM;
priv = devlink_priv(devlink);
priv->hdev = hdev;
- ret = devlink_register(devlink, &pdev->dev);
+ ret = devlink_register(devlink);
if (ret) {
dev_err(&pdev->dev, "failed to register devlink, ret = %d\n",
ret);
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_devlink.c b/drivers/net/ethernet/huawei/hinic/hinic_devlink.c
index 58d5646444b0..6e11ee339f12 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_devlink.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_devlink.c
@@ -293,9 +293,9 @@ static const struct devlink_ops hinic_devlink_ops = {
.flash_update = hinic_devlink_flash_update,
};
-struct devlink *hinic_devlink_alloc(void)
+struct devlink *hinic_devlink_alloc(struct device *dev)
{
- return devlink_alloc(&hinic_devlink_ops, sizeof(struct hinic_dev));
+ return devlink_alloc(&hinic_devlink_ops, sizeof(struct hinic_dev), dev);
}
void hinic_devlink_free(struct devlink *devlink)
@@ -303,11 +303,11 @@ void hinic_devlink_free(struct devlink *devlink)
devlink_free(devlink);
}
-int hinic_devlink_register(struct hinic_devlink_priv *priv, struct device *dev)
+int hinic_devlink_register(struct hinic_devlink_priv *priv)
{
struct devlink *devlink = priv_to_devlink(priv);
- return devlink_register(devlink, dev);
+ return devlink_register(devlink);
}
void hinic_devlink_unregister(struct hinic_devlink_priv *priv)
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_devlink.h b/drivers/net/ethernet/huawei/hinic/hinic_devlink.h
index a090ebcfaabb..9e315011015c 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_devlink.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_devlink.h
@@ -108,9 +108,9 @@ struct host_image_st {
u32 device_id;
};
-struct devlink *hinic_devlink_alloc(void);
+struct devlink *hinic_devlink_alloc(struct device *dev);
void hinic_devlink_free(struct devlink *devlink);
-int hinic_devlink_register(struct hinic_devlink_priv *priv, struct device *dev);
+int hinic_devlink_register(struct hinic_devlink_priv *priv);
void hinic_devlink_unregister(struct hinic_devlink_priv *priv);
int hinic_health_reporters_create(struct hinic_devlink_priv *priv);
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c
index 428108eb10d2..56b6b04e209b 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c
@@ -754,7 +754,7 @@ static int init_pfhwdev(struct hinic_pfhwdev *pfhwdev)
return err;
}
- err = hinic_devlink_register(hwdev->devlink_dev, &pdev->dev);
+ err = hinic_devlink_register(hwdev->devlink_dev);
if (err) {
dev_err(&hwif->pdev->dev, "Failed to register devlink\n");
hinic_pf_to_mgmt_free(&pfhwdev->pf_to_mgmt);
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c
index 405ee4d2d2b1..881d0b247561 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_main.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c
@@ -1183,7 +1183,7 @@ static int nic_dev_init(struct pci_dev *pdev)
struct devlink *devlink;
int err, num_qps;
- devlink = hinic_devlink_alloc();
+ devlink = hinic_devlink_alloc(&pdev->dev);
if (!devlink) {
dev_err(&pdev->dev, "Hinic devlink alloc failed\n");
return -ENOMEM;
diff --git a/drivers/net/ethernet/intel/ice/ice_devlink.c b/drivers/net/ethernet/intel/ice/ice_devlink.c
index 91b545ab8b8f..8c863d64930b 100644
--- a/drivers/net/ethernet/intel/ice/ice_devlink.c
+++ b/drivers/net/ethernet/intel/ice/ice_devlink.c
@@ -475,7 +475,7 @@ struct ice_pf *ice_allocate_pf(struct device *dev)
{
struct devlink *devlink;
- devlink = devlink_alloc(&ice_devlink_ops, sizeof(struct ice_pf));
+ devlink = devlink_alloc(&ice_devlink_ops, sizeof(struct ice_pf), dev);
if (!devlink)
return NULL;
@@ -502,7 +502,7 @@ int ice_devlink_register(struct ice_pf *pf)
struct device *dev = ice_pf_to_dev(pf);
int err;
- err = devlink_register(devlink, dev);
+ err = devlink_register(devlink);
if (err) {
dev_err(dev, "devlink registration failed: %d\n", err);
return err;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
index 6f963b2f54a7..a55b46ad162d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
@@ -1503,13 +1503,14 @@ int rvu_register_dl(struct rvu *rvu)
struct devlink *dl;
int err;
- dl = devlink_alloc(&rvu_devlink_ops, sizeof(struct rvu_devlink));
+ dl = devlink_alloc(&rvu_devlink_ops, sizeof(struct rvu_devlink),
+ rvu->dev);
if (!dl) {
dev_warn(rvu->dev, "devlink_alloc failed\n");
return -ENOMEM;
}
- err = devlink_register(dl, rvu->dev);
+ err = devlink_register(dl);
if (err) {
dev_err(rvu->dev, "devlink register failed with error %d\n", err);
devlink_free(dl);
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_devlink.c b/drivers/net/ethernet/marvell/prestera/prestera_devlink.c
index fa7a0682ad1e..68b442eb6d69 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_devlink.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_devlink.c
@@ -390,11 +390,12 @@ static const struct devlink_ops prestera_dl_ops = {
.trap_drop_counter_get = prestera_drop_counter_get,
};
-struct prestera_switch *prestera_devlink_alloc(void)
+struct prestera_switch *prestera_devlink_alloc(struct prestera_device *dev)
{
struct devlink *dl;
- dl = devlink_alloc(&prestera_dl_ops, sizeof(struct prestera_switch));
+ dl = devlink_alloc(&prestera_dl_ops, sizeof(struct prestera_switch),
+ dev->dev);
return devlink_priv(dl);
}
@@ -411,7 +412,7 @@ int prestera_devlink_register(struct prestera_switch *sw)
struct devlink *dl = priv_to_devlink(sw);
int err;
- err = devlink_register(dl, sw->dev->dev);
+ err = devlink_register(dl);
if (err) {
dev_err(prestera_dev(sw), "devlink_register failed: %d\n", err);
return err;
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_devlink.h b/drivers/net/ethernet/marvell/prestera/prestera_devlink.h
index 5d73aa9db897..cc34c3db13a2 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_devlink.h
+++ b/drivers/net/ethernet/marvell/prestera/prestera_devlink.h
@@ -6,7 +6,7 @@
#include "prestera.h"
-struct prestera_switch *prestera_devlink_alloc(void);
+struct prestera_switch *prestera_devlink_alloc(struct prestera_device *dev);
void prestera_devlink_free(struct prestera_switch *sw);
int prestera_devlink_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 7c569c1abefc..44c670807fb3 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_main.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_main.c
@@ -905,7 +905,7 @@ int prestera_device_register(struct prestera_device *dev)
struct prestera_switch *sw;
int err;
- sw = prestera_devlink_alloc();
+ sw = prestera_devlink_alloc(dev);
if (!sw)
return -ENOMEM;
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 28ac4693da3c..7267c6c6d2e2 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -4005,7 +4005,7 @@ static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
printk_once(KERN_INFO "%s", mlx4_version);
- devlink = devlink_alloc(&mlx4_devlink_ops, sizeof(*priv));
+ devlink = devlink_alloc(&mlx4_devlink_ops, sizeof(*priv), &pdev->dev);
if (!devlink)
return -ENOMEM;
priv = devlink_priv(devlink);
@@ -4024,7 +4024,7 @@ static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
mutex_init(&dev->persist->interface_state_mutex);
mutex_init(&dev->persist->pci_status_mutex);
- ret = devlink_register(devlink, &pdev->dev);
+ ret = devlink_register(devlink);
if (ret)
goto err_persist_free;
ret = devlink_params_register(devlink, mlx4_devlink_params,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
index d791d351b489..f38553ff538b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
@@ -359,9 +359,10 @@ int mlx5_devlink_traps_get_action(struct mlx5_core_dev *dev, int trap_id,
return 0;
}
-struct devlink *mlx5_devlink_alloc(void)
+struct devlink *mlx5_devlink_alloc(struct device *dev)
{
- return devlink_alloc(&mlx5_devlink_ops, sizeof(struct mlx5_core_dev));
+ return devlink_alloc(&mlx5_devlink_ops, sizeof(struct mlx5_core_dev),
+ dev);
}
void mlx5_devlink_free(struct devlink *devlink)
@@ -638,11 +639,11 @@ static void mlx5_devlink_traps_unregister(struct devlink *devlink)
ARRAY_SIZE(mlx5_trap_groups_arr));
}
-int mlx5_devlink_register(struct devlink *devlink, struct device *dev)
+int mlx5_devlink_register(struct devlink *devlink)
{
int err;
- err = devlink_register(devlink, dev);
+ err = devlink_register(devlink);
if (err)
return err;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.h b/drivers/net/ethernet/mellanox/mlx5/core/devlink.h
index 7318d44b774b..30bf4882779b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.h
@@ -31,9 +31,9 @@ int mlx5_devlink_trap_get_num_active(struct mlx5_core_dev *dev);
int mlx5_devlink_traps_get_action(struct mlx5_core_dev *dev, int trap_id,
enum devlink_trap_action *action);
-struct devlink *mlx5_devlink_alloc(void);
+struct devlink *mlx5_devlink_alloc(struct device *dev);
void mlx5_devlink_free(struct devlink *devlink);
-int mlx5_devlink_register(struct devlink *devlink, struct device *dev);
+int mlx5_devlink_register(struct devlink *devlink);
void mlx5_devlink_unregister(struct devlink *devlink);
#endif /* __MLX5_DEVLINK_H__ */
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index eb1b316560a8..a8efd9f1af4c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -1271,7 +1271,7 @@ int mlx5_init_one(struct mlx5_core_dev *dev)
set_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state);
- err = mlx5_devlink_register(priv_to_devlink(dev), dev->device);
+ err = mlx5_devlink_register(priv_to_devlink(dev));
if (err)
goto err_devlink_reg;
@@ -1452,7 +1452,7 @@ static int probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
struct devlink *devlink;
int err;
- devlink = mlx5_devlink_alloc();
+ devlink = mlx5_devlink_alloc(&pdev->dev);
if (!devlink) {
dev_err(&pdev->dev, "devlink alloc failed\n");
return -ENOMEM;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/driver.c b/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/driver.c
index 42c8ee03fe3e..052f48068dc1 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/driver.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/driver.c
@@ -14,7 +14,7 @@ static int mlx5_sf_dev_probe(struct auxiliary_device *adev, const struct auxilia
struct devlink *devlink;
int err;
- devlink = mlx5_devlink_alloc();
+ devlink = mlx5_devlink_alloc(&adev->dev);
if (!devlink)
return -ENOMEM;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
index e775f08fb464..f080fab3de2b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -1927,7 +1927,8 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
if (!reload) {
alloc_size = sizeof(*mlxsw_core) + mlxsw_driver->priv_size;
- devlink = devlink_alloc(&mlxsw_devlink_ops, alloc_size);
+ devlink = devlink_alloc(&mlxsw_devlink_ops, alloc_size,
+ mlxsw_bus_info->dev);
if (!devlink) {
err = -ENOMEM;
goto err_devlink_alloc;
@@ -1974,7 +1975,7 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
goto err_emad_init;
if (!reload) {
- err = devlink_register(devlink, mlxsw_bus_info->dev);
+ err = devlink_register(devlink);
if (err)
goto err_devlink_register;
}
diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
index 4bd7e9d9ec61..aa41c9cde643 100644
--- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
+++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
@@ -1103,7 +1103,8 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
if (!np && !pdev->dev.platform_data)
return -ENODEV;
- devlink = devlink_alloc(&ocelot_devlink_ops, sizeof(*ocelot));
+ devlink =
+ devlink_alloc(&ocelot_devlink_ops, sizeof(*ocelot), &pdev->dev);
if (!devlink)
return -ENOMEM;
@@ -1187,7 +1188,7 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
if (err)
goto out_put_ports;
- err = devlink_register(devlink, ocelot->dev);
+ err = devlink_register(devlink);
if (err)
goto out_ocelot_deinit;
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_main.c b/drivers/net/ethernet/netronome/nfp/nfp_main.c
index 742a420152b3..bb3b8a7f6c5d 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_main.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_main.c
@@ -692,7 +692,7 @@ static int nfp_pci_probe(struct pci_dev *pdev,
goto err_pci_disable;
}
- devlink = devlink_alloc(&nfp_devlink_ops, sizeof(*pf));
+ devlink = devlink_alloc(&nfp_devlink_ops, sizeof(*pf), &pdev->dev);
if (!devlink) {
err = -ENOMEM;
goto err_rel_regions;
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_main.c b/drivers/net/ethernet/netronome/nfp/nfp_net_main.c
index 921db40047d7..d10a93801344 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_main.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_main.c
@@ -701,7 +701,7 @@ int nfp_net_pci_probe(struct nfp_pf *pf)
if (err)
goto err_unmap;
- err = devlink_register(devlink, &pf->pdev->dev);
+ err = devlink_register(devlink);
if (err)
goto err_app_clean;
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_devlink.c b/drivers/net/ethernet/pensando/ionic/ionic_devlink.c
index cd520e4c5522..c7d0e195d176 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_devlink.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_devlink.c
@@ -64,7 +64,7 @@ struct ionic *ionic_devlink_alloc(struct device *dev)
{
struct devlink *dl;
- dl = devlink_alloc(&ionic_dl_ops, sizeof(struct ionic));
+ dl = devlink_alloc(&ionic_dl_ops, sizeof(struct ionic), dev);
return devlink_priv(dl);
}
@@ -82,7 +82,7 @@ int ionic_devlink_register(struct ionic *ionic)
struct devlink_port_attrs attrs = {};
int err;
- err = devlink_register(dl, ionic->dev);
+ err = devlink_register(dl);
if (err) {
dev_warn(ionic->dev, "devlink_register failed: %d\n", err);
return err;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_devlink.c b/drivers/net/ethernet/qlogic/qed/qed_devlink.c
index cf7f4da68e69..4c7501b9c284 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_devlink.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_devlink.c
@@ -207,14 +207,15 @@ struct devlink *qed_devlink_register(struct qed_dev *cdev)
struct devlink *dl;
int rc;
- dl = devlink_alloc(&qed_dl_ops, sizeof(struct qed_devlink));
+ dl = devlink_alloc(&qed_dl_ops, sizeof(struct qed_devlink),
+ &cdev->pdev->dev);
if (!dl)
return ERR_PTR(-ENOMEM);
qdevlink = devlink_priv(dl);
qdevlink->cdev = cdev;
- rc = devlink_register(dl, &cdev->pdev->dev);
+ rc = devlink_register(dl);
if (rc)
goto err_free;
diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
index 588e7df0b1cc..130346f74ee8 100644
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -2422,14 +2422,14 @@ static int am65_cpsw_nuss_register_devlink(struct am65_cpsw_common *common)
int i;
common->devlink =
- devlink_alloc(&am65_cpsw_devlink_ops, sizeof(*dl_priv));
+ devlink_alloc(&am65_cpsw_devlink_ops, sizeof(*dl_priv), dev);
if (!common->devlink)
return -ENOMEM;
dl_priv = devlink_priv(common->devlink);
dl_priv->common = common;
- ret = devlink_register(common->devlink, dev);
+ ret = devlink_register(common->devlink);
if (ret) {
dev_err(dev, "devlink reg fail ret:%d\n", ret);
goto dl_free;
diff --git a/drivers/net/ethernet/ti/cpsw_new.c b/drivers/net/ethernet/ti/cpsw_new.c
index ae167223e87f..192394fe4c1c 100644
--- a/drivers/net/ethernet/ti/cpsw_new.c
+++ b/drivers/net/ethernet/ti/cpsw_new.c
@@ -1800,14 +1800,14 @@ static int cpsw_register_devlink(struct cpsw_common *cpsw)
struct cpsw_devlink *dl_priv;
int ret = 0;
- cpsw->devlink = devlink_alloc(&cpsw_devlink_ops, sizeof(*dl_priv));
+ cpsw->devlink = devlink_alloc(&cpsw_devlink_ops, sizeof(*dl_priv), dev);
if (!cpsw->devlink)
return -ENOMEM;
dl_priv = devlink_priv(cpsw->devlink);
dl_priv->cpsw = cpsw;
- ret = devlink_register(cpsw->devlink, dev);
+ ret = devlink_register(cpsw->devlink);
if (ret) {
dev_err(dev, "DL reg fail ret:%d\n", ret);
goto dl_free;
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c
index 53068e184c90..54313bd57797 100644
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -1449,7 +1449,7 @@ int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev)
int err;
devlink = devlink_alloc_ns(&nsim_dev_devlink_ops, sizeof(*nsim_dev),
- nsim_bus_dev->initial_net);
+ nsim_bus_dev->initial_net, &nsim_bus_dev->dev);
if (!devlink)
return -ENOMEM;
nsim_dev = devlink_priv(devlink);
@@ -1470,7 +1470,7 @@ int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev)
if (err)
goto err_devlink_free;
- err = devlink_register(devlink, &nsim_bus_dev->dev);
+ err = devlink_register(devlink);
if (err)
goto err_resources_unregister;
diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
index 6b9c14586987..92edf772feed 100644
--- a/drivers/ptp/ptp_ocp.c
+++ b/drivers/ptp/ptp_ocp.c
@@ -735,24 +735,6 @@ ptp_ocp_info(struct ptp_ocp *bp)
ptp_ocp_tod_info(bp);
}
-static int
-ptp_ocp_devlink_register(struct devlink *devlink, struct device *dev)
-{
- int err;
-
- err = devlink_register(devlink, dev);
- if (err)
- return err;
-
- return 0;
-}
-
-static void
-ptp_ocp_devlink_unregister(struct devlink *devlink)
-{
- devlink_unregister(devlink);
-}
-
static struct device *
ptp_ocp_find_flash(struct ptp_ocp *bp)
{
@@ -1437,13 +1419,13 @@ ptp_ocp_probe(struct pci_dev *pdev, const struct pci_device_id *id)
struct ptp_ocp *bp;
int err;
- devlink = devlink_alloc(&ptp_ocp_devlink_ops, sizeof(*bp));
+ devlink = devlink_alloc(&ptp_ocp_devlink_ops, sizeof(*bp), &pdev->dev);
if (!devlink) {
dev_err(&pdev->dev, "devlink_alloc failed\n");
return -ENOMEM;
}
- err = ptp_ocp_devlink_register(devlink, &pdev->dev);
+ err = devlink_register(devlink);
if (err)
goto out_free;
@@ -1497,7 +1479,7 @@ ptp_ocp_probe(struct pci_dev *pdev, const struct pci_device_id *id)
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);
out_unregister:
- ptp_ocp_devlink_unregister(devlink);
+ devlink_unregister(devlink);
out_free:
devlink_free(devlink);
@@ -1514,7 +1496,7 @@ ptp_ocp_remove(struct pci_dev *pdev)
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);
- ptp_ocp_devlink_unregister(devlink);
+ devlink_unregister(devlink);
devlink_free(devlink);
}
diff --git a/drivers/staging/qlge/qlge_main.c b/drivers/staging/qlge/qlge_main.c
index 19a02e958865..8fcdf89da8aa 100644
--- a/drivers/staging/qlge/qlge_main.c
+++ b/drivers/staging/qlge/qlge_main.c
@@ -4547,7 +4547,8 @@ static int qlge_probe(struct pci_dev *pdev,
static int cards_found;
int err;
- devlink = devlink_alloc(&qlge_devlink_ops, sizeof(struct qlge_adapter));
+ devlink = devlink_alloc(&qlge_devlink_ops, sizeof(struct qlge_adapter),
+ &pdev->dev);
if (!devlink)
return -ENOMEM;
@@ -4613,7 +4614,7 @@ static int qlge_probe(struct pci_dev *pdev,
goto netdev_free;
}
- err = devlink_register(devlink, &pdev->dev);
+ err = devlink_register(devlink);
if (err)
goto netdev_free;
diff --git a/include/net/devlink.h b/include/net/devlink.h
index ccbfb3a844aa..0236c77f2fd0 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -1544,13 +1544,15 @@ struct net *devlink_net(const struct devlink *devlink);
* Drivers that operate on real HW must use devlink_alloc() instead.
*/
struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
- size_t priv_size, struct net *net);
+ size_t priv_size, struct net *net,
+ struct device *dev);
static inline struct devlink *devlink_alloc(const struct devlink_ops *ops,
- size_t priv_size)
+ size_t priv_size,
+ struct device *dev)
{
- return devlink_alloc_ns(ops, priv_size, &init_net);
+ return devlink_alloc_ns(ops, priv_size, &init_net, dev);
}
-int devlink_register(struct devlink *devlink, struct device *dev);
+int devlink_register(struct devlink *devlink);
void devlink_unregister(struct devlink *devlink);
void devlink_reload_enable(struct devlink *devlink);
void devlink_reload_disable(struct devlink *devlink);
diff --git a/net/core/devlink.c b/net/core/devlink.c
index ee95eee8d0ed..d3b16dd9f64e 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -8768,24 +8768,26 @@ static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
* @ops: ops
* @priv_size: size of user private data
* @net: net namespace
+ * @dev: parent device
*
* Allocate new devlink instance resources, including devlink index
* and name.
*/
struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
- size_t priv_size, struct net *net)
+ size_t priv_size, struct net *net,
+ struct device *dev)
{
struct devlink *devlink;
- if (WARN_ON(!ops))
- return NULL;
-
+ WARN_ON(!ops || !dev);
if (!devlink_reload_actions_valid(ops))
return NULL;
devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
if (!devlink)
return NULL;
+
+ devlink->dev = dev;
devlink->ops = ops;
xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
write_pnet(&devlink->_net, net);
@@ -8810,12 +8812,9 @@ EXPORT_SYMBOL_GPL(devlink_alloc_ns);
* devlink_register - Register devlink instance
*
* @devlink: devlink
- * @dev: parent device
*/
-int devlink_register(struct devlink *devlink, struct device *dev)
+int devlink_register(struct devlink *devlink)
{
- WARN_ON(devlink->dev);
- devlink->dev = dev;
mutex_lock(&devlink_mutex);
list_add_tail(&devlink->list, &devlink_list);
devlink_notify(devlink, DEVLINK_CMD_NEW);
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index a4c525f1cb17..8150e16aaa55 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -746,13 +746,14 @@ static int dsa_switch_setup(struct dsa_switch *ds)
/* Add the switch to devlink before calling setup, so that setup can
* add dpipe tables
*/
- ds->devlink = devlink_alloc(&dsa_devlink_ops, sizeof(*dl_priv));
+ ds->devlink =
+ devlink_alloc(&dsa_devlink_ops, sizeof(*dl_priv), ds->dev);
if (!ds->devlink)
return -ENOMEM;
dl_priv = devlink_priv(ds->devlink);
dl_priv->ds = ds;
- err = devlink_register(ds->devlink, ds->dev);
+ err = devlink_register(ds->devlink);
if (err)
goto free_devlink;
--
2.31.1
Sun, Aug 08, 2021 at 08:57:43PM CEST, [email protected] wrote:
>From: Leon Romanovsky <[email protected]>
>
>All kernel devlink implementations call to devlink_alloc() during
>initialization routine for specific device which is used later as
>a parent device for devlink_register().
>
>Such late device assignment causes to the situation which requires us to
>call to device_register() before setting other parameters, but that call
>opens devlink to the world and makes accessible for the netlink users.
>
>Any attempt to move devlink_register() to be the last call generates the
>following error due to access to the devlink->dev pointer.
>
>[ 8.758862] devlink_nl_param_fill+0x2e8/0xe50
>[ 8.760305] devlink_param_notify+0x6d/0x180
>[ 8.760435] __devlink_params_register+0x2f1/0x670
>[ 8.760558] devlink_params_register+0x1e/0x20
>
>The simple change of API to set devlink device in the devlink_alloc()
>instead of devlink_register() fixes all this above and ensures that
>prior to call to devlink_register() everything already set.
>
>Signed-off-by: Leon Romanovsky <[email protected]>
Reviewed-by: Jiri Pirko <[email protected]>
Hello:
This patch was applied to netdev/net-next.git (refs/heads/master):
On Sun, 8 Aug 2021 21:57:43 +0300 you wrote:
> From: Leon Romanovsky <[email protected]>
>
> All kernel devlink implementations call to devlink_alloc() during
> initialization routine for specific device which is used later as
> a parent device for devlink_register().
>
> Such late device assignment causes to the situation which requires us to
> call to device_register() before setting other parameters, but that call
> opens devlink to the world and makes accessible for the netlink users.
>
> [...]
Here is the summary with links:
- [net-next] devlink: Set device as early as possible
https://git.kernel.org/netdev/net-next/c/919d13a7e455
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html
Hi Leon,
On Mon, Aug 9, 2021 at 12:33 AM Leon Romanovsky <[email protected]> wrote:
>
> From: Leon Romanovsky <[email protected]>
>
> All kernel devlink implementations call to devlink_alloc() during
> initialization routine for specific device which is used later as
> a parent device for devlink_register().
>
> Such late device assignment causes to the situation which requires us to
> call to device_register() before setting other parameters, but that call
> opens devlink to the world and makes accessible for the netlink users.
>
> Any attempt to move devlink_register() to be the last call generates the
> following error due to access to the devlink->dev pointer.
>
> [ 8.758862] devlink_nl_param_fill+0x2e8/0xe50
> [ 8.760305] devlink_param_notify+0x6d/0x180
> [ 8.760435] __devlink_params_register+0x2f1/0x670
> [ 8.760558] devlink_params_register+0x1e/0x20
>
> The simple change of API to set devlink device in the devlink_alloc()
> instead of devlink_register() fixes all this above and ensures that
> prior to call to devlink_register() everything already set.
>
> Signed-off-by: Leon Romanovsky <[email protected]>
> ---
> .../net/ethernet/broadcom/bnxt/bnxt_devlink.c | 9 ++++---
> .../net/ethernet/cavium/liquidio/lio_main.c | 5 ++--
> .../freescale/dpaa2/dpaa2-eth-devlink.c | 5 ++--
> .../hisilicon/hns3/hns3pf/hclge_devlink.c | 4 +--
> .../hisilicon/hns3/hns3vf/hclgevf_devlink.c | 7 ++---
> .../net/ethernet/huawei/hinic/hinic_devlink.c | 8 +++---
> .../net/ethernet/huawei/hinic/hinic_devlink.h | 4 +--
> .../net/ethernet/huawei/hinic/hinic_hw_dev.c | 2 +-
> .../net/ethernet/huawei/hinic/hinic_main.c | 2 +-
> drivers/net/ethernet/intel/ice/ice_devlink.c | 4 +--
> .../marvell/octeontx2/af/rvu_devlink.c | 5 ++--
> .../marvell/prestera/prestera_devlink.c | 7 ++---
> .../marvell/prestera/prestera_devlink.h | 2 +-
> .../ethernet/marvell/prestera/prestera_main.c | 2 +-
> drivers/net/ethernet/mellanox/mlx4/main.c | 4 +--
> .../net/ethernet/mellanox/mlx5/core/devlink.c | 9 ++++---
> .../net/ethernet/mellanox/mlx5/core/devlink.h | 4 +--
> .../net/ethernet/mellanox/mlx5/core/main.c | 4 +--
> .../mellanox/mlx5/core/sf/dev/driver.c | 2 +-
> drivers/net/ethernet/mellanox/mlxsw/core.c | 5 ++--
> drivers/net/ethernet/mscc/ocelot_vsc7514.c | 5 ++--
> drivers/net/ethernet/netronome/nfp/nfp_main.c | 2 +-
> .../net/ethernet/netronome/nfp/nfp_net_main.c | 2 +-
> .../ethernet/pensando/ionic/ionic_devlink.c | 4 +--
> drivers/net/ethernet/qlogic/qed/qed_devlink.c | 5 ++--
> drivers/net/ethernet/ti/am65-cpsw-nuss.c | 4 +--
> drivers/net/ethernet/ti/cpsw_new.c | 4 +--
> drivers/net/netdevsim/dev.c | 4 +--
> drivers/ptp/ptp_ocp.c | 26 +++----------------
> drivers/staging/qlge/qlge_main.c | 5 ++--
> include/net/devlink.h | 10 ++++---
> net/core/devlink.c | 15 +++++------
> net/dsa/dsa2.c | 5 ++--
> 33 files changed, 91 insertions(+), 94 deletions(-)
>
<snip>
>
> diff --git a/include/net/devlink.h b/include/net/devlink.h
> index ccbfb3a844aa..0236c77f2fd0 100644
> --- a/include/net/devlink.h
> +++ b/include/net/devlink.h
> @@ -1544,13 +1544,15 @@ struct net *devlink_net(const struct devlink *devlink);
> * Drivers that operate on real HW must use devlink_alloc() instead.
> */
> struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
> - size_t priv_size, struct net *net);
> + size_t priv_size, struct net *net,
> + struct device *dev);
> static inline struct devlink *devlink_alloc(const struct devlink_ops *ops,
> - size_t priv_size)
> + size_t priv_size,
> + struct device *dev)
> {
> - return devlink_alloc_ns(ops, priv_size, &init_net);
> + return devlink_alloc_ns(ops, priv_size, &init_net, dev);
> }
> -int devlink_register(struct devlink *devlink, struct device *dev);
> +int devlink_register(struct devlink *devlink);
> void devlink_unregister(struct devlink *devlink);
> void devlink_reload_enable(struct devlink *devlink);
> void devlink_reload_disable(struct devlink *devlink);
> diff --git a/net/core/devlink.c b/net/core/devlink.c
> index ee95eee8d0ed..d3b16dd9f64e 100644
> --- a/net/core/devlink.c
> +++ b/net/core/devlink.c
> @@ -8768,24 +8768,26 @@ static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
> * @ops: ops
> * @priv_size: size of user private data
> * @net: net namespace
> + * @dev: parent device
> *
> * Allocate new devlink instance resources, including devlink index
> * and name.
> */
> struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
> - size_t priv_size, struct net *net)
> + size_t priv_size, struct net *net,
> + struct device *dev)
> {
> struct devlink *devlink;
>
> - if (WARN_ON(!ops))
> - return NULL;
> -
> + WARN_ON(!ops || !dev);
> if (!devlink_reload_actions_valid(ops))
> return NULL;
>
> devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
> if (!devlink)
> return NULL;
> +
> + devlink->dev = dev;
> devlink->ops = ops;
> xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
> write_pnet(&devlink->_net, net);
> @@ -8810,12 +8812,9 @@ EXPORT_SYMBOL_GPL(devlink_alloc_ns);
> * devlink_register - Register devlink instance
> *
> * @devlink: devlink
> - * @dev: parent device
> */
This patch is converting devlink_alloc() to devlink_alloc_register().
There are 2 APIs: devlink_alloc() and devlink_register().
Both APIs can be used in a scenario,
Where devlink_alloc() can be done by code written around
one struct dev and used by another struct dev.
or
This scenario is not even a valid scenario?
> -int devlink_register(struct devlink *devlink, struct device *dev)
> +int devlink_register(struct devlink *devlink)
> {
> - WARN_ON(devlink->dev);
> - devlink->dev = dev;
> mutex_lock(&devlink_mutex);
> list_add_tail(&devlink->list, &devlink_list);
> devlink_notify(devlink, DEVLINK_CMD_NEW);
Considering device registration has been moved to devlink_alloc().
Can the remaining code of devlink_register() be also moved in devlink_alloc()?
--pk
On Tue, Aug 10, 2021 at 06:08:51PM +0530, Prabhakar Kushwaha wrote:
> Hi Leon,
<...>
> > struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
> > - size_t priv_size, struct net *net)
> > + size_t priv_size, struct net *net,
> > + struct device *dev)
> > {
> > struct devlink *devlink;
> >
> > - if (WARN_ON(!ops))
> > - return NULL;
> > -
> > + WARN_ON(!ops || !dev);
> > if (!devlink_reload_actions_valid(ops))
> > return NULL;
> >
> > devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
> > if (!devlink)
> > return NULL;
> > +
> > + devlink->dev = dev;
> > devlink->ops = ops;
> > xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
> > write_pnet(&devlink->_net, net);
> > @@ -8810,12 +8812,9 @@ EXPORT_SYMBOL_GPL(devlink_alloc_ns);
> > * devlink_register - Register devlink instance
> > *
> > * @devlink: devlink
> > - * @dev: parent device
> > */
>
> This patch is converting devlink_alloc() to devlink_alloc_register().
>
> There are 2 APIs: devlink_alloc() and devlink_register().
> Both APIs can be used in a scenario,
> Where devlink_alloc() can be done by code written around
> one struct dev and used by another struct dev.
> or
> This scenario is not even a valid scenario?
devlink_alloc() is used to allocated netdev structures for newly
initialized device, it is not possible to share same devlink instance
between different devices.
>
> > -int devlink_register(struct devlink *devlink, struct device *dev)
> > +int devlink_register(struct devlink *devlink)
> > {
> > - WARN_ON(devlink->dev);
> > - devlink->dev = dev;
> > mutex_lock(&devlink_mutex);
> > list_add_tail(&devlink->list, &devlink_list);
> > devlink_notify(devlink, DEVLINK_CMD_NEW);
>
> Considering device registration has been moved to devlink_alloc().
> Can the remaining code of devlink_register() be also moved in devlink_alloc()?
The line "list_add_tail(&devlink->list, &devlink_list);" makes the
devlink instance visible to the devlink netlink users. We need to be
sure that it is happening when the device is already initialized, while
devlink_alloc() is performed usually as first line in .probe() routine.
This means that we can't combine alloc an register and
devlink_alloc_register() can't be valid scenario.
Thanks
>
> --pk