On Mon, Apr 15, 2024 at 02:49:49AM -0700, Shradha Gupta wrote:
> Add new device attributes to view multiport, msix, and adapter MTU
> setting for MANA device.
>
> Signed-off-by: Shradha Gupta <shradhagupta@xxxxxxxxxxxxxxxxxxx>
> ---
> .../net/ethernet/microsoft/mana/gdma_main.c | 74 +++++++++++++++++++
> include/net/mana/gdma.h | 9 +++
> 2 files changed, 83 insertions(+)
>
> diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c
> index 1332db9a08eb..6674a02cff06 100644
> --- a/drivers/net/ethernet/microsoft/mana/gdma_main.c
> +++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c
> @@ -1471,6 +1471,65 @@ static bool mana_is_pf(unsigned short dev_id)
> return dev_id == MANA_PF_DEVICE_ID;
> }
>
> +static ssize_t mana_attr_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> +{
> + struct pci_dev *pdev = to_pci_dev(dev);
> + struct gdma_context *gc = pci_get_drvdata(pdev);
> + struct mana_context *ac = gc->mana.driver_data;
> +
> + if (strcmp(attr->attr.name, "mport") == 0)
> + return snprintf(buf, PAGE_SIZE, "%d\n", ac->num_ports);
> + else if (strcmp(attr->attr.name, "adapter_mtu") == 0)
> + return snprintf(buf, PAGE_SIZE, "%d\n", gc->adapter_mtu);
> + else if (strcmp(attr->attr.name, "msix") == 0)
> + return snprintf(buf, PAGE_SIZE, "%d\n", gc->max_num_msix);
> + else
> + return -EINVAL;
> +
That is not how sysfs should be implemented at all, please find a
good example to copy from. Every attribute should use its own function
with the macros to link it into an attributes group and sysfs_emit
should be used for printing
Jason
