diff options
Diffstat (limited to 'drivers/net/macsec.c')
| -rw-r--r-- | drivers/net/macsec.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c index 832f09ac075e..817577e713d7 100644 --- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -99,6 +99,7 @@ struct pcpu_secy_stats { * struct macsec_dev - private data * @secy: SecY config * @real_dev: pointer to underlying netdevice + * @dev_tracker: refcount tracker for @real_dev reference * @stats: MACsec device stats * @secys: linked list of SecY's on the underlying device * @gro_cells: pointer to the Generic Receive Offload cell @@ -107,6 +108,7 @@ struct pcpu_secy_stats { struct macsec_dev { struct macsec_secy secy; struct net_device *real_dev; + netdevice_tracker dev_tracker; struct pcpu_secy_stats __percpu *stats; struct list_head secys; struct gro_cells gro_cells; @@ -3459,6 +3461,9 @@ static int macsec_dev_init(struct net_device *dev) if (is_zero_ether_addr(dev->broadcast)) memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len); + /* Get macsec's reference to real_dev */ + dev_hold_track(real_dev, &macsec->dev_tracker, GFP_KERNEL); + return 0; } @@ -3704,6 +3709,8 @@ static void macsec_free_netdev(struct net_device *dev) free_percpu(macsec->stats); free_percpu(macsec->secy.tx_sc.stats); + /* Get rid of the macsec's reference to real_dev */ + dev_put_track(macsec->real_dev, &macsec->dev_tracker); } static void macsec_setup(struct net_device *dev) |