diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/core/uverbs_main.c | 11 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_provider.c | 1 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_user.h | 6 |
3 files changed, 18 insertions, 0 deletions
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c index e7058fbc607..c84cc28b60e 100644 --- a/drivers/infiniband/core/uverbs_main.c +++ b/drivers/infiniband/core/uverbs_main.c @@ -598,6 +598,15 @@ static ssize_t show_ibdev(struct class_device *class_dev, char *buf) } static CLASS_DEVICE_ATTR(ibdev, S_IRUGO, show_ibdev, NULL); +static ssize_t show_dev_abi_version(struct class_device *class_dev, char *buf) +{ + struct ib_uverbs_device *dev = + container_of(class_dev, struct ib_uverbs_device, class_dev); + + return sprintf(buf, "%d\n", dev->ib_dev->uverbs_abi_ver); +} +static CLASS_DEVICE_ATTR(abi_version, S_IRUGO, show_dev_abi_version, NULL); + static void ib_uverbs_release_class_dev(struct class_device *class_dev) { struct ib_uverbs_device *dev = @@ -662,6 +671,8 @@ static void ib_uverbs_add_one(struct ib_device *device) if (class_device_create_file(&uverbs_dev->class_dev, &class_device_attr_ibdev)) goto err_class; + if (class_device_create_file(&uverbs_dev->class_dev, &class_device_attr_abi_version)) + goto err_class; ib_set_client_data(device, &uverbs_client, uverbs_dev); diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c index 141509dced7..939b09dcfe0 100644 --- a/drivers/infiniband/hw/mthca/mthca_provider.c +++ b/drivers/infiniband/hw/mthca/mthca_provider.c @@ -1060,6 +1060,7 @@ int mthca_register_device(struct mthca_dev *dev) strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX); dev->ib_dev.owner = THIS_MODULE; + dev->ib_dev.uverbs_abi_ver = MTHCA_UVERBS_ABI_VERSION; dev->ib_dev.node_type = IB_NODE_CA; dev->ib_dev.phys_port_cnt = dev->limits.num_ports; dev->ib_dev.dma_device = &dev->pdev->dev; diff --git a/drivers/infiniband/hw/mthca/mthca_user.h b/drivers/infiniband/hw/mthca/mthca_user.h index 41613ec8a04..bb015c6494c 100644 --- a/drivers/infiniband/hw/mthca/mthca_user.h +++ b/drivers/infiniband/hw/mthca/mthca_user.h @@ -38,6 +38,12 @@ #include <linux/types.h> /* + * Increment this value if any changes that break userspace ABI + * compatibility are made. + */ +#define MTHCA_UVERBS_ABI_VERSION 1 + +/* * Make sure that all structs defined in this file remain laid out so * that they pack the same way on 32-bit and 64-bit architectures (to * avoid incompatibility between 32-bit userspace and 64-bit kernels). |