Add new device attributes to view multiport, msix, and adapter MTU setting for MANA device.
Signed-off-by: Shradha Gupta <[email protected]> --- .../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; +} + +static int mana_gd_setup_sysfs(struct pci_dev *pdev) +{ + struct gdma_context *gc = pci_get_drvdata(pdev); + int retval = 0; + + gc->mana_attributes.mana_mport_attr.attr.name = "mport"; + gc->mana_attributes.mana_mport_attr.attr.mode = 0444; + gc->mana_attributes.mana_mport_attr.show = mana_attr_show; + sysfs_attr_init(&gc->mana_attributes.mana_mport_attr); + retval = device_create_file(&pdev->dev, + &gc->mana_attributes.mana_mport_attr); + if (retval < 0) + return retval; + + gc->mana_attributes.mana_adapter_mtu_attr.attr.name = "adapter_mtu"; + gc->mana_attributes.mana_adapter_mtu_attr.attr.mode = 0444; + gc->mana_attributes.mana_adapter_mtu_attr.show = mana_attr_show; + sysfs_attr_init(&gc->mana_attributes.mana_adapter_mtu_attr); + retval = device_create_file(&pdev->dev, + &gc->mana_attributes.mana_adapter_mtu_attr); + if (retval < 0) + goto mtu_attr_error; + + gc->mana_attributes.mana_msix_attr.attr.name = "msix"; + gc->mana_attributes.mana_msix_attr.attr.mode = 0444; + gc->mana_attributes.mana_msix_attr.show = mana_attr_show; + sysfs_attr_init(&gc->mana_attributes.mana_msix_attr); + retval = device_create_file(&pdev->dev, + &gc->mana_attributes.mana_msix_attr); + if (retval < 0) + goto msix_attr_error; + + return retval; +msix_attr_error: + device_remove_file(&pdev->dev, + &gc->mana_attributes.mana_adapter_mtu_attr); +mtu_attr_error: + device_remove_file(&pdev->dev, + &gc->mana_attributes.mana_mport_attr); + return retval; +} + static int mana_gd_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct gdma_context *gc; @@ -1519,6 +1578,10 @@ static int mana_gd_probe(struct pci_dev *pdev, const struct pci_device_id *ent) gc->bar0_va = bar0_va; gc->dev = &pdev->dev; + err = mana_gd_setup_sysfs(pdev); + if (err < 0) + goto free_gc; + err = mana_gd_setup(pdev); if (err) goto unmap_bar; @@ -1544,6 +1607,15 @@ static int mana_gd_probe(struct pci_dev *pdev, const struct pci_device_id *ent) return err; } +static void mana_cleanup_sysfs_files(struct pci_dev *pdev, + struct gdma_context *gc) +{ + device_remove_file(&pdev->dev, &gc->mana_attributes.mana_msix_attr); + device_remove_file(&pdev->dev, + &gc->mana_attributes.mana_adapter_mtu_attr); + device_remove_file(&pdev->dev, &gc->mana_attributes.mana_mport_attr); +} + static void mana_gd_remove(struct pci_dev *pdev) { struct gdma_context *gc = pci_get_drvdata(pdev); @@ -1552,6 +1624,8 @@ static void mana_gd_remove(struct pci_dev *pdev) mana_gd_cleanup(pdev); + mana_cleanup_sysfs_files(pdev, gc); + pci_iounmap(pdev, gc->bar0_va); vfree(gc); diff --git a/include/net/mana/gdma.h b/include/net/mana/gdma.h index 27684135bb4d..ea636959164c 100644 --- a/include/net/mana/gdma.h +++ b/include/net/mana/gdma.h @@ -354,6 +354,12 @@ struct gdma_irq_context { char name[MANA_IRQ_NAME_SZ]; }; +struct mana_device_attributes { + struct device_attribute mana_mport_attr; + struct device_attribute mana_adapter_mtu_attr; + struct device_attribute mana_msix_attr; +}; + struct gdma_context { struct device *dev; @@ -395,6 +401,9 @@ struct gdma_context { /* Azure RDMA adapter */ struct gdma_dev mana_ib; + + /* device attributes */ + struct mana_device_attributes mana_attributes; }; #define MAX_NUM_GDMA_DEVICES 4 -- 2.34.1
