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IB/core: Allow device-specific per-port sysfs files

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Add a new parameter to ib_register_device() so that low-level device
drivers can pass in a pointer to a callback function that will be
called for each port that is registered in sysfs.  This allows
low-level device drivers to create files in

    /sys/class/infiniband/<hca>/ports/<N>/

without having to poke through the internals of the RDMA sysfs handling.

There is no need for an unregister function since the kobject
reference will go to zero when ib_unregister_device() is called.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Ralph Campbell 2010-05-06 17:03:25 -07:00 committed by Roland Dreier
parent a0fe3cc5d3
commit 9a6edb60ec
12 changed files with 35 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/infiniband/core/core_priv.h
View File

@ -38,7 +38,9 @@
#include <rdma/ib_verbs.h>
int ib_device_register_sysfs(struct ib_device *device);
int ib_device_register_sysfs(struct ib_device *device,
int (*port_callback)(struct ib_device *,
u8, struct kobject *));
void ib_device_unregister_sysfs(struct ib_device *device);
int ib_sysfs_setup(void);

6
drivers/infiniband/core/device.c
View File

@ -267,7 +267,9 @@ out:
* callback for each device that is added. @device must be allocated
* with ib_alloc_device().
*/
int ib_register_device(struct ib_device *device)
int ib_register_device(struct ib_device *device,
int (*port_callback)(struct ib_device *,
u8, struct kobject *))
{
int ret;
@ -296,7 +298,7 @@ int ib_register_device(struct ib_device *device)
goto out;
}
ret = ib_device_register_sysfs(device);
ret = ib_device_register_sysfs(device, port_callback);
if (ret) {
printk(KERN_WARNING "Couldn't register device %s with driver model\n",
device->name);

21
drivers/infiniband/core/sysfs.c
View File

@ -475,7 +475,9 @@ err:
return NULL;
}
static int add_port(struct ib_device *device, int port_num)
static int add_port(struct ib_device *device, int port_num,
int (*port_callback)(struct ib_device *,
u8, struct kobject *))
{
struct ib_port *p;
struct ib_port_attr attr;
@ -522,11 +524,20 @@ static int add_port(struct ib_device *device, int port_num)
if (ret)
goto err_free_pkey;
if (port_callback) {
ret = port_callback(device, port_num, &p->kobj);
if (ret)
goto err_remove_pkey;
}
list_add_tail(&p->kobj.entry, &device->port_list);
kobject_uevent(&p->kobj, KOBJ_ADD);
return 0;
err_remove_pkey:
sysfs_remove_group(&p->kobj, &p->pkey_group);
err_free_pkey:
for (i = 0; i < attr.pkey_tbl_len; ++i)
kfree(p->pkey_group.attrs[i]);
@ -754,7 +765,9 @@ static struct attribute_group iw_stats_group = {
.attrs = iw_proto_stats_attrs,
};
int ib_device_register_sysfs(struct ib_device *device)
int ib_device_register_sysfs(struct ib_device *device,
int (*port_callback)(struct ib_device *,
u8, struct kobject *))
{
struct device *class_dev = &device->dev;
int ret;
@ -785,12 +798,12 @@ int ib_device_register_sysfs(struct ib_device *device)
}
if (device->node_type == RDMA_NODE_IB_SWITCH) {
ret = add_port(device, 0);
ret = add_port(device, 0, port_callback);
if (ret)
goto err_put;
} else {
for (i = 1; i <= device->phys_port_cnt; ++i) {
ret = add_port(device, i);
ret = add_port(device, i, port_callback);
if (ret)
goto err_put;
}

2
drivers/infiniband/hw/amso1100/c2_provider.c
View File

@ -865,7 +865,7 @@ int c2_register_device(struct c2_dev *dev)
dev->ibdev.iwcm->create_listen = c2_service_create;
dev->ibdev.iwcm->destroy_listen = c2_service_destroy;
ret = ib_register_device(&dev->ibdev);
ret = ib_register_device(&dev->ibdev, NULL);
if (ret)
goto out_free_iwcm;

2
drivers/infiniband/hw/cxgb3/iwch_provider.c
View File

@ -1428,7 +1428,7 @@ int iwch_register_device(struct iwch_dev *dev)
dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
dev->ibdev.iwcm->get_qp = iwch_get_qp;
ret = ib_register_device(&dev->ibdev);
ret = ib_register_device(&dev->ibdev, NULL);
if (ret)
goto bail1;

2
drivers/infiniband/hw/cxgb4/provider.c
View File

@ -486,7 +486,7 @@ int c4iw_register_device(struct c4iw_dev *dev)
dev->ibdev.iwcm->rem_ref = c4iw_qp_rem_ref;
dev->ibdev.iwcm->get_qp = c4iw_get_qp;
ret = ib_register_device(&dev->ibdev);
ret = ib_register_device(&dev->ibdev, NULL);
if (ret)
goto bail1;

2
drivers/infiniband/hw/ehca/ehca_main.c
View File

@ -798,7 +798,7 @@ static int __devinit ehca_probe(struct of_device *dev,
goto probe5;
}
ret = ib_register_device(&shca->ib_device);
ret = ib_register_device(&shca->ib_device, NULL);
if (ret) {
ehca_err(&shca->ib_device,
"ib_register_device() failed ret=%i", ret);

2
drivers/infiniband/hw/ipath/ipath_verbs.c
View File

@ -2182,7 +2182,7 @@ int ipath_register_ib_device(struct ipath_devdata *dd)
snprintf(dev->node_desc, sizeof(dev->node_desc),
IPATH_IDSTR " %s", init_utsname()->nodename);
ret = ib_register_device(dev);
ret = ib_register_device(dev, NULL);
if (ret)
goto err_reg;

2
drivers/infiniband/hw/mlx4/main.c
View File

@ -662,7 +662,7 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
spin_lock_init(&ibdev->sm_lock);
mutex_init(&ibdev->cap_mask_mutex);
if (ib_register_device(&ibdev->ib_dev))
if (ib_register_device(&ibdev->ib_dev, NULL))
goto err_map;
if (mlx4_ib_mad_init(ibdev))

2
drivers/infiniband/hw/mthca/mthca_provider.c
View File

@ -1403,7 +1403,7 @@ int mthca_register_device(struct mthca_dev *dev)
mutex_init(&dev->cap_mask_mutex);
ret = ib_register_device(&dev->ib_dev);
ret = ib_register_device(&dev->ib_dev, NULL);
if (ret)
return ret;

2
drivers/infiniband/hw/nes/nes_verbs.c
View File

@ -3962,7 +3962,7 @@ int nes_register_ofa_device(struct nes_ib_device *nesibdev)
struct nes_adapter *nesadapter = nesdev->nesadapter;
int i, ret;
ret = ib_register_device(&nesvnic->nesibdev->ibdev);
ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
if (ret) {
return ret;
}

4
include/rdma/ib_verbs.h
View File

@ -1172,7 +1172,9 @@ struct ib_client {
struct ib_device *ib_alloc_device(size_t size);
void ib_dealloc_device(struct ib_device *device);
int ib_register_device (struct ib_device *device);
int ib_register_device(struct ib_device *device,
int (*port_callback)(struct ib_device *,
u8, struct kobject *));
void ib_unregister_device(struct ib_device *device);
int ib_register_client (struct ib_client *client);