diff options
| author | Eric Dumazet <edumazet@google.com> | 2021-12-06 17:30:28 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-12-07 20:44:58 -0800 |
| commit | 19c9ebf6ed70856385296a65e78c1699081b152f (patch) | |
| tree | a741cbb9ccb135863e5a8ee534df058546bde127 | |
| parent | 08f0b22d731fa86957749c649d6ef6ebc07e8ad2 (diff) | |
vlan: add net device refcount tracker
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | include/linux/if_vlan.h | 3 | ||||
| -rw-r--r-- | net/8021q/vlan_dev.c | 4 |
2 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h index 41a518336673..8420fe504927 100644 --- a/include/linux/if_vlan.h +++ b/include/linux/if_vlan.h @@ -162,6 +162,7 @@ struct netpoll; * @vlan_id: VLAN identifier * @flags: device flags * @real_dev: underlying netdevice + * @dev_tracker: refcount tracker for @real_dev reference * @real_dev_addr: address of underlying netdevice * @dent: proc dir entry * @vlan_pcpu_stats: ptr to percpu rx stats @@ -177,6 +178,8 @@ struct vlan_dev_priv { u16 flags; struct net_device *real_dev; + netdevice_tracker dev_tracker; + unsigned char real_dev_addr[ETH_ALEN]; struct proc_dir_entry *dent; diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index 866556e041b7..26d031a43cc1 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -616,7 +616,7 @@ static int vlan_dev_init(struct net_device *dev) return -ENOMEM; /* Get vlan's reference to real_dev */ - dev_hold(real_dev); + dev_hold_track(real_dev, &vlan->dev_tracker, GFP_KERNEL); return 0; } @@ -848,7 +848,7 @@ static void vlan_dev_free(struct net_device *dev) vlan->vlan_pcpu_stats = NULL; /* Get rid of the vlan's reference to real_dev */ - dev_put(vlan->real_dev); + dev_put_track(vlan->real_dev, &vlan->dev_tracker); } void vlan_setup(struct net_device *dev) |