The .back field placed in i40e_hw is used to get pointer to i40e_pf
instance but it is not necessary as the i40e_hw is a part of i40e_pf
and containerof macro can be used to obtain the pointer to i40e_pf.
Remove .back field from i40e_hw structure, introduce i40e_hw_to_pf()
and i40e_hw_to_dev() helpers and use them.
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
---
drivers/net/ethernet/intel/i40e/i40e.h | 11 ++++++++++
drivers/net/ethernet/intel/i40e/i40e_main.c | 22 ++++++++++++++------
drivers/net/ethernet/intel/i40e/i40e_osdep.h | 8 +++----
drivers/net/ethernet/intel/i40e/i40e_type.h | 1 -
4 files changed, 31 insertions(+), 11 deletions(-)
> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf Of Ivan Vecera
> Sent: Wednesday, September 27, 2023 2:01 PM
> To: netdev@vger.kernel.org
> Cc: edumazet@google.com; intel-wired-lan@lists.osuosl.org; Brandeburg, Jesse <jesse.brandeburg@intel.com>; linux-kernel@vger.kernel.org; Nguyen, Anthony L <anthony.l.nguyen@intel.com>; Kitszel, Przemyslaw <przemyslaw.kitszel@intel.com>; kuba@kernel.org; pabeni@redhat.com; davem@davemloft.net
> Subject: [Intel-wired-lan] [PATCH net-next v2 1/9] i40e: Remove back pointer from i40e_hw structure
>
> The .back field placed in i40e_hw is used to get pointer to i40e_pf
> instance but it is not necessary as the i40e_hw is a part of i40e_pf
> and containerof macro can be used to obtain the pointer to i40e_pf.
> Remove .back field from i40e_hw structure, introduce i40e_hw_to_pf()
> and i40e_hw_to_dev() helpers and use them.
>
> Signed-off-by: Ivan Vecera <ivecera@redhat.com>
> ---
> drivers/net/ethernet/intel/i40e/i40e.h | 11 ++++++++++
> drivers/net/ethernet/intel/i40e/i40e_main.c | 22 ++++++++++++++------
> drivers/net/ethernet/intel/i40e/i40e_osdep.h | 8 +++----
> drivers/net/ethernet/intel/i40e/i40e_type.h | 1 -
> 4 files changed, 31 insertions(+), 11 deletions(-)
>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
@@ -1321,4 +1321,15 @@ static inline u32 i40e_is_tc_mqprio_enabled(struct i40e_pf *pf)
return pf->flags & I40E_FLAG_TC_MQPRIO;
}
+/**
+ * i40e_hw_to_pf - get pf pointer from the hardware structure
+ * @hw: pointer to the device HW structure
+ **/
+static inline struct i40e_pf *i40e_hw_to_pf(struct i40e_hw *hw)
+{
+ return container_of(hw, struct i40e_pf, hw);
+}
+
+struct device *i40e_hw_to_dev(struct i40e_hw *hw);
+
#endif /* _I40E_H_ */
@@ -119,6 +119,17 @@ static void netdev_hw_addr_refcnt(struct i40e_mac_filter *f,
}
}
+/**
+ * i40e_hw_to_dev - get device pointer from the hardware structure
+ * @hw: pointer to the device HW structure
+ **/
+struct device *i40e_hw_to_dev(struct i40e_hw *hw)
+{
+ struct i40e_pf *pf = i40e_hw_to_pf(hw);
+
+ return &pf->pdev->dev;
+}
+
/**
* i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
* @hw: pointer to the HW structure
@@ -129,7 +140,7 @@ static void netdev_hw_addr_refcnt(struct i40e_mac_filter *f,
int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
u64 size, u32 alignment)
{
- struct i40e_pf *pf = (struct i40e_pf *)hw->back;
+ struct i40e_pf *pf = i40e_hw_to_pf(hw);
mem->size = ALIGN(size, alignment);
mem->va = dma_alloc_coherent(&pf->pdev->dev, mem->size, &mem->pa,
@@ -147,7 +158,7 @@ int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
**/
int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
{
- struct i40e_pf *pf = (struct i40e_pf *)hw->back;
+ struct i40e_pf *pf = i40e_hw_to_pf(hw);
dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
mem->va = NULL;
@@ -15623,10 +15634,10 @@ static int i40e_init_recovery_mode(struct i40e_pf *pf, struct i40e_hw *hw)
**/
static inline void i40e_set_subsystem_device_id(struct i40e_hw *hw)
{
- struct pci_dev *pdev = ((struct i40e_pf *)hw->back)->pdev;
+ struct i40e_pf *pf = i40e_hw_to_pf(hw);
- hw->subsystem_device_id = pdev->subsystem_device ?
- pdev->subsystem_device :
+ hw->subsystem_device_id = pf->pdev->subsystem_device ?
+ pf->pdev->subsystem_device :
(ushort)(rd32(hw, I40E_PFPCI_SUBSYSID) & USHRT_MAX);
}
@@ -15696,7 +15707,6 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
set_bit(__I40E_DOWN, pf->state);
hw = &pf->hw;
- hw->back = pf;
pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
I40E_MAX_CSR_SPACE);
@@ -18,10 +18,10 @@
* actual OS primitives
*/
-#define hw_dbg(hw, S, A...) \
-do { \
- dev_dbg(&((struct i40e_pf *)hw->back)->pdev->dev, S, ##A); \
-} while (0)
+struct i40e_hw;
+struct device *i40e_hw_to_dev(struct i40e_hw *hw);
+
+#define hw_dbg(hw, S, A...) dev_dbg(i40e_hw_to_dev(hw), S, ##A)
#define wr32(a, reg, value) writel((value), ((a)->hw_addr + (reg)))
#define rd32(a, reg) readl((a)->hw_addr + (reg))
@@ -525,7 +525,6 @@ struct i40e_dcbx_config {
/* Port hardware description */
struct i40e_hw {
u8 __iomem *hw_addr;
- void *back;
/* subsystem structs */
struct i40e_phy_info phy;