From bee31369ce16fc3898ec9a54161248c9eddb06bc Mon Sep 17 00:00:00 2001 From: Nolan Leake Date: Tue, 27 Jul 2010 13:53:43 +0000 Subject: [PATCH] tun: keep link (carrier) state up to date Currently, only ethtool can get accurate link state of a tap device. With this patch, IFF_RUNNING and IF_OPER_UP/DOWN are kept up to date as well. Signed-off-by: Nolan Leake Signed-off-by: David S. Miller --- drivers/net/tun.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 63042596f0cf..55f3a3e667a9 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -149,6 +149,7 @@ static int tun_attach(struct tun_struct *tun, struct file *file) tfile->tun = tun; tun->tfile = tfile; tun->socket.file = file; + netif_carrier_on(tun->dev); dev_hold(tun->dev); sock_hold(tun->socket.sk); atomic_inc(&tfile->count); @@ -162,6 +163,7 @@ static void __tun_detach(struct tun_struct *tun) { /* Detach from net device */ netif_tx_lock_bh(tun->dev); + netif_carrier_off(tun->dev); tun->tfile = NULL; tun->socket.file = NULL; netif_tx_unlock_bh(tun->dev); @@ -1574,12 +1576,6 @@ static void tun_set_msglevel(struct net_device *dev, u32 value) #endif } -static u32 tun_get_link(struct net_device *dev) -{ - struct tun_struct *tun = netdev_priv(dev); - return !!tun->tfile; -} - static u32 tun_get_rx_csum(struct net_device *dev) { struct tun_struct *tun = netdev_priv(dev); @@ -1601,7 +1597,7 @@ static const struct ethtool_ops tun_ethtool_ops = { .get_drvinfo = tun_get_drvinfo, .get_msglevel = tun_get_msglevel, .set_msglevel = tun_set_msglevel, - .get_link = tun_get_link, + .get_link = ethtool_op_get_link, .get_rx_csum = tun_get_rx_csum, .set_rx_csum = tun_set_rx_csum }; -- GitLab