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Commit 8030c835 authored by Leon Romanovsky's avatar Leon Romanovsky
Browse files

RDMA/core: Add iterator over ib_devices 



The coming nldev needs to iterate over all IB devices in the system
and in order to not expose the ib_devices list outside the devices.c,
it is necessary to provide function iterator.

Current version is written explicitly for nldev callback to avoid
over-engineering at this stage, but it can be easily extended for
other types.

Signed-off-by: default avatarLeon Romanovsky <leonro@mellanox.com>
Reviewed-by: default avatarSteve Wise <swise@opengridcomputing.com>
parent 3250b4db

drivers/infiniband/core/core_priv.h

+8 −0
Original line number Diff line number Diff line
@@ -102,6 +102,14 @@ void ib_enum_all_roce_netdevs(roce_netdev_filter filter, 
			      roce_netdev_callback cb,

			      void *cookie);



typedef int (*nldev_callback)(struct ib_device *device,

			      struct sk_buff *skb,

			      struct netlink_callback *cb,

			      unsigned int idx);



int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,

		     struct netlink_callback *cb);



enum ib_cache_gid_default_mode {

	IB_CACHE_GID_DEFAULT_MODE_SET,

	IB_CACHE_GID_DEFAULT_MODE_DELETE

drivers/infiniband/core/device.c

+25 −0
Original line number Diff line number Diff line
@@ -892,6 +892,31 @@ void ib_enum_all_roce_netdevs(roce_netdev_filter filter, 
	up_read(&lists_rwsem);

}



/**

 * ib_enum_all_devs - enumerate all ib_devices

 * @cb: Callback to call for each found ib_device

 *

 * Enumerates all ib_devices and calls callback() on each device.

 */

int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,

		     struct netlink_callback *cb)

{

	struct ib_device *dev;

	unsigned int idx = 0;

	int ret = 0;



	down_read(&lists_rwsem);

	list_for_each_entry(dev, &device_list, core_list) {

		ret = nldev_cb(dev, skb, cb, idx);

		if (ret)

			break;

		idx++;

	}



	up_read(&lists_rwsem);

	return ret;

}



/**

 * ib_query_pkey - Get P_Key table entry

 * @device:Device to query