From 8030c8357a94ce6397dd8df6296925f0f4b1f9b7 Mon Sep 17 00:00:00 2001 From: Leon Romanovsky Date: Mon, 19 Jun 2017 14:04:56 +0300 Subject: [PATCH] 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: Leon Romanovsky Reviewed-by: Steve Wise --- drivers/infiniband/core/core_priv.h | 8 ++++++++ drivers/infiniband/core/device.c | 25 +++++++++++++++++++++++++ 2 files changed, 33 insertions(+) diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h index e759c27113cd..0c175590cf92 100644 --- a/drivers/infiniband/core/core_priv.h +++ b/drivers/infiniband/core/core_priv.h @@ -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 diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index 33a39518848c..8828f26250a8 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -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 -- 2.20.1