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| author | Xin Long <lucien.xin@gmail.com> | 2017-10-16 19:43:15 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-16 21:23:10 +0100 |
| commit | 823038ca030e9f8283518b1e6a5a6879edcbe057 (patch) | |
| tree | 0ea32fc3e9ca2f86980d357a14d87478c10bbf18 /net/core/dev_ioctl.c | |
| parent | c019b5166e11faaf9ed3b64316ed338eaa19de60 (diff) | |
| download | linux-stable-823038ca030e9f8283518b1e6a5a6879edcbe057.tar.gz linux-stable-823038ca030e9f8283518b1e6a5a6879edcbe057.tar.bz2 linux-stable-823038ca030e9f8283518b1e6a5a6879edcbe057.zip | |
dev_ioctl: add missing NETDEV_CHANGE_TX_QUEUE_LEN event notification
When changing dev tx_queue_len via netlink or net-sysfs,
a NETDEV_CHANGE_TX_QUEUE_LEN event notification will be
called.
But dev_ioctl missed this event notification, which could
cause no userspace notification would be sent.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/dev_ioctl.c')
| -rw-r--r-- | net/core/dev_ioctl.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c index 709a4e6fb447..f9c7a88cd981 100644 --- a/net/core/dev_ioctl.c +++ b/net/core/dev_ioctl.c @@ -303,7 +303,18 @@ static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd) case SIOCSIFTXQLEN: if (ifr->ifr_qlen < 0) return -EINVAL; - dev->tx_queue_len = ifr->ifr_qlen; + if (dev->tx_queue_len ^ ifr->ifr_qlen) { + unsigned int orig_len = dev->tx_queue_len; + + dev->tx_queue_len = ifr->ifr_qlen; + err = call_netdevice_notifiers( + NETDEV_CHANGE_TX_QUEUE_LEN, dev); + err = notifier_to_errno(err); + if (err) { + dev->tx_queue_len = orig_len; + return err; + } + } return 0; case SIOCSIFNAME: |