net/mlx5e: Use refcount_t for refcount

refcount_t is better for reference counters since its
implementation can prevent overflows.
So convert atomic_t ref counters to refcount_t.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/vxlan.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/vxlan.c
index b9d4f4e19ff93d5c7438fe75a990dce38a5912b9..148b55c3db7ae24777b5870e2879a624cc7ac1bf 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/vxlan.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/vxlan.c
@@ -32,6 +32,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/refcount.h>
 #include <linux/mlx5/driver.h>
 #include <net/vxlan.h>
 #include "mlx5_core.h"
@@ -48,7 +49,7 @@ struct mlx5_vxlan {
 
 struct mlx5_vxlan_port {
        struct hlist_node hlist;
-       atomic_t refcount;
+       refcount_t refcount;
        u16 udp_port;
 };
 
@@ -113,7 +114,7 @@ int mlx5_vxlan_add_port(struct mlx5_vxlan *vxlan, u16 port)
 
        vxlanp = mlx5_vxlan_lookup_port(vxlan, port);
        if (vxlanp) {
-               atomic_inc(&vxlanp->refcount);
+               refcount_inc(&vxlanp->refcount);
                return 0;
        }
 
@@ -137,7 +138,7 @@ int mlx5_vxlan_add_port(struct mlx5_vxlan *vxlan, u16 port)
        }
 
        vxlanp->udp_port = port;
-       atomic_set(&vxlanp->refcount, 1);
+       refcount_set(&vxlanp->refcount, 1);
 
        spin_lock_bh(&vxlan->lock);
        hash_add(vxlan->htable, &vxlanp->hlist, port);
@@ -170,7 +171,7 @@ int mlx5_vxlan_del_port(struct mlx5_vxlan *vxlan, u16 port)
                goto out_unlock;
        }
 
-       if (atomic_dec_and_test(&vxlanp->refcount)) {
+       if (refcount_dec_and_test(&vxlanp->refcount)) {
                hash_del(&vxlanp->hlist);
                remove = true;
        }