[PATCH net-next 04/11] IB/core: Flip to the new dev walk API

[David Ahern]

Convert rdma_is_upper_dev_rcu, handle_netdev_upper and
ipoib_get_net_dev_match_addr to the new upper device walk API.
This is just a move to the new API; no functional change is intended.

Signed-off-by: David Ahern <d...@cumulusnetworks.com>
---
 drivers/infiniband/core/core_priv.h     |  9 +------
 drivers/infiniband/core/roce_gid_mgmt.c | 42 ++++++++++++++++++---------------
 2 files changed, 24 insertions(+), 27 deletions(-)

diff --git a/drivers/infiniband/core/core_priv.h 
b/drivers/infiniband/core/core_priv.h
index 19d499dcab76..0c0bea091de8 100644
--- a/drivers/infiniband/core/core_priv.h
+++ b/drivers/infiniband/core/core_priv.h
@@ -127,14 +127,7 @@ void ib_cache_release_one(struct ib_device *device);
 static inline bool rdma_is_upper_dev_rcu(struct net_device *dev,
                                         struct net_device *upper)
 {
-       struct net_device *_upper = NULL;
-       struct list_head *iter;
-
-       netdev_for_each_all_upper_dev_rcu(dev, _upper, iter)
-               if (_upper == upper)
-                       break;
-
-       return _upper == upper;
+       return netdev_has_upper_dev_all_rcu(dev, upper);
 }
 
 int addr_init(void);
diff --git a/drivers/infiniband/core/roce_gid_mgmt.c 
b/drivers/infiniband/core/roce_gid_mgmt.c
index 06556c34606d..db759a68d948 100644
--- a/drivers/infiniband/core/roce_gid_mgmt.c
+++ b/drivers/infiniband/core/roce_gid_mgmt.c
@@ -437,6 +437,28 @@ static void callback_for_addr_gid_device_scan(struct 
ib_device *device,
                          &parsed->gid_attr);
 }
 
+struct upper_list {
+       struct list_head list;
+       struct net_device *upper;
+};
+
+static int netdev_upper_walk(struct net_device *upper, void *data)
+{
+       struct upper_list *entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
+       struct list_head *upper_list = (struct list_head *)data;
+
+       if (!entry) {
+               pr_info("roce_gid_mgmt: couldn't allocate entry to delete 
ndev\n");
+               return 0;
+       }
+
+       list_add_tail(&entry->list, upper_list);
+       dev_hold(upper);
+       entry->upper = upper;
+
+       return 0;
+}
+
 static void handle_netdev_upper(struct ib_device *ib_dev, u8 port,
                                void *cookie,
                                void (*handle_netdev)(struct ib_device *ib_dev,
@@ -444,30 +466,12 @@ static void handle_netdev_upper(struct ib_device *ib_dev, 
u8 port,
                                                      struct net_device *ndev))
 {
        struct net_device *ndev = (struct net_device *)cookie;
-       struct upper_list {
-               struct list_head list;
-               struct net_device *upper;
-       };
-       struct net_device *upper;
-       struct list_head *iter;
        struct upper_list *upper_iter;
        struct upper_list *upper_temp;
        LIST_HEAD(upper_list);
 
        rcu_read_lock();
-       netdev_for_each_all_upper_dev_rcu(ndev, upper, iter) {
-               struct upper_list *entry = kmalloc(sizeof(*entry),
-                                                  GFP_ATOMIC);
-
-               if (!entry) {
-                       pr_info("roce_gid_mgmt: couldn't allocate entry to 
delete ndev\n");
-                       continue;
-               }
-
-               list_add_tail(&entry->list, &upper_list);
-               dev_hold(upper);
-               entry->upper = upper;
-       }
+       netdev_walk_all_upper_dev_rcu(ndev, netdev_upper_walk, &upper_list);
        rcu_read_unlock();
 
        handle_netdev(ib_dev, port, ndev);
-- 
2.1.4