diff options
Diffstat (limited to 'drivers/net/tun.c')
| -rw-r--r-- | drivers/net/tun.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 170a3e89b5af..698874684b4e 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -679,6 +679,15 @@ static void tun_queue_purge(struct tun_file *tfile) skb_queue_purge(&tfile->sk.sk_error_queue); } +static void tun_cleanup_tx_ring(struct tun_file *tfile) +{ + if (tfile->tx_ring.queue) { + ptr_ring_cleanup(&tfile->tx_ring, tun_ptr_free); + xdp_rxq_info_unreg(&tfile->xdp_rxq); + memset(&tfile->tx_ring, 0, sizeof(tfile->tx_ring)); + } +} + static void __tun_detach(struct tun_file *tfile, bool clean) { struct tun_file *ntfile; @@ -725,10 +734,7 @@ static void __tun_detach(struct tun_file *tfile, bool clean) tun->dev->reg_state == NETREG_REGISTERED) unregister_netdevice(tun->dev); } - if (tun) { - ptr_ring_cleanup(&tfile->tx_ring, tun_ptr_free); - xdp_rxq_info_unreg(&tfile->xdp_rxq); - } + tun_cleanup_tx_ring(tfile); sock_put(&tfile->sk); } } @@ -770,12 +776,14 @@ static void tun_detach_all(struct net_device *dev) tun_queue_purge(tfile); xdp_rxq_info_unreg(&tfile->xdp_rxq); sock_put(&tfile->sk); + tun_cleanup_tx_ring(tfile); } list_for_each_entry_safe(tfile, tmp, &tun->disabled, next) { tun_enable_queue(tfile); tun_queue_purge(tfile); xdp_rxq_info_unreg(&tfile->xdp_rxq); sock_put(&tfile->sk); + tun_cleanup_tx_ring(tfile); } BUG_ON(tun->numdisabled != 0); @@ -3145,6 +3153,8 @@ static int tun_chr_open(struct inode *inode, struct file * file) sock_set_flag(&tfile->sk, SOCK_ZEROCOPY); + memset(&tfile->tx_ring, 0, sizeof(tfile->tx_ring)); + return 0; } |