diff options
author | Alex Shi <alex.shi@linaro.org> | 2018-02-01 12:03:41 +0800 |
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committer | Alex Shi <alex.shi@linaro.org> | 2018-02-01 12:03:41 +0800 |
commit | 9cebd248bd83dea5ead3f1ab5f3cbaf241588e37 (patch) | |
tree | 5f2d8fd7122c345045c476d57cb7c5ad17a4f08b /drivers/net/tun.c | |
parent | 4f0ca2b2718d297c88b1c303f2d414327c537636 (diff) | |
parent | 6c6f924f9c6294944ee6efb1bbd8cdb853582e50 (diff) |
Merge tag 'v4.9.79' into linux-linaro-lsk-v4.9lsk-v4.9-18.02
This is the 4.9.79 stable release
Diffstat (limited to 'drivers/net/tun.c')
-rw-r--r-- | drivers/net/tun.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 518cbfbc8b65..eb6dc28e5e52 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -525,6 +525,14 @@ static void tun_queue_purge(struct tun_file *tfile) skb_queue_purge(&tfile->sk.sk_error_queue); } +static void tun_cleanup_tx_array(struct tun_file *tfile) +{ + if (tfile->tx_array.ring.queue) { + skb_array_cleanup(&tfile->tx_array); + memset(&tfile->tx_array, 0, sizeof(tfile->tx_array)); + } +} + static void __tun_detach(struct tun_file *tfile, bool clean) { struct tun_file *ntfile; @@ -566,8 +574,7 @@ static void __tun_detach(struct tun_file *tfile, bool clean) tun->dev->reg_state == NETREG_REGISTERED) unregister_netdevice(tun->dev); } - if (tun) - skb_array_cleanup(&tfile->tx_array); + tun_cleanup_tx_array(tfile); sock_put(&tfile->sk); } } @@ -606,11 +613,13 @@ static void tun_detach_all(struct net_device *dev) /* Drop read queue */ tun_queue_purge(tfile); sock_put(&tfile->sk); + tun_cleanup_tx_array(tfile); } list_for_each_entry_safe(tfile, tmp, &tun->disabled, next) { tun_enable_queue(tfile); tun_queue_purge(tfile); sock_put(&tfile->sk); + tun_cleanup_tx_array(tfile); } BUG_ON(tun->numdisabled != 0); @@ -2363,6 +2372,8 @@ static int tun_chr_open(struct inode *inode, struct file * file) sock_set_flag(&tfile->sk, SOCK_ZEROCOPY); + memset(&tfile->tx_array, 0, sizeof(tfile->tx_array)); + return 0; } |