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RDMA/core: Introduce ib_core_device to hold device

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In order to support sysfs entries in multiple net namespaces for a rdma
device, introduce a ib_core_device whose scope is limited to hold core
device and per port sysfs related entries.

This is preparation patch so that multiple ib_core_devices in each net
namespace can be created in subsequent patch who all can share ib_device.

(a) Move sysfs specific fields to ib_core_device.
(b) Make sysfs and device life cycle related routines to work on
    ib_core_device.
(c) Introduce and use rdma_init_coredev() helper to initialize
    coredev fields.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Parav Pandit
2019-02-26 13:56:11 +02:00
committed by Jason Gunthorpe
parent 629e6f9db6
commit cebe556bd7
3 changed files with 55 additions and 23 deletions
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25
include/rdma/ib_verbs.h
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@@ -2554,8 +2554,17 @@ struct ib_device_ops {
DECLARE_RDMA_OBJ_SIZE(ib_ucontext);
};
struct rdma_restrack_root;
struct ib_core_device {
/* device must be the first element in structure until,
* union of ib_core_device and device exists in ib_device.
*/
struct device dev;
struct kobject *ports_kobj;
struct list_head port_list;
struct ib_device *owner; /* reach back to owner ib_device */
};
struct rdma_restrack_root;
struct ib_device {
/* Do not access @dma_device directly from ULP nor from HW drivers. */
struct device *dma_device;
@@ -2581,16 +2590,17 @@ struct ib_device {
struct iw_cm_verbs *iwcm;
struct module *owner;
struct device dev;
union {
struct device dev;
struct ib_core_device coredev;
};
/* First group for device attributes,
* Second group for driver provided attributes (optional).
* It is NULL terminated array.
*/
const struct attribute_group *groups[3];
struct kobject *ports_kobj;
struct list_head port_list;
int uverbs_abi_ver;
u64 uverbs_cmd_mask;
u64 uverbs_ex_cmd_mask;
@@ -4349,7 +4359,10 @@ rdma_set_device_sysfs_group(struct ib_device *dev,
*/
static inline struct ib_device *rdma_device_to_ibdev(struct device *device)
{
return container_of(device, struct ib_device, dev);
struct ib_core_device *coredev =
container_of(device, struct ib_core_device, dev);
return coredev->owner;
}
/**