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| author | Pavel Emelyanov <xemul@openvz.org> | 2008-04-02 00:08:01 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-04-02 00:08:01 -0700 |
| commit | 802fb176d8c635ae42da31b80841c26e8c7338a0 (patch) | |
| tree | 3f0a1283ca650868fd41942fb13e5ada129788c7 /net/8021q | |
| parent | f32c5f2c3866bf4d932d2bc42216dafb90a50ab7 (diff) | |
| download | linux-3.10-802fb176d8c635ae42da31b80841c26e8c7338a0.tar.gz linux-3.10-802fb176d8c635ae42da31b80841c26e8c7338a0.tar.bz2 linux-3.10-802fb176d8c635ae42da31b80841c26e8c7338a0.zip | |
[VLAN]: Proc entry is not renamed when vlan device name changes.
This may lead to situations, when each of two proc entries produce
data for the other's device.
Looks like a BUG, so this patch is for net-2.6. It will not apply to
net-2.6.26 since dev->nd_net access is replaced with dev_net(dev)
one.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q')
| -rw-r--r-- | net/8021q/vlan.c | 20 | ||||
| -rw-r--r-- | net/8021q/vlan.h | 5 | ||||
| -rw-r--r-- | net/8021q/vlanproc.c | 5 |
3 files changed, 24 insertions, 6 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index dbc81b96509..b33410abfd6 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -374,17 +374,35 @@ static void vlan_sync_address(struct net_device *dev, memcpy(vlan->real_dev_addr, dev->dev_addr, ETH_ALEN); } +static void __vlan_device_event(struct net_device *dev, unsigned long event) +{ + switch (event) { + case NETDEV_CHANGENAME: + vlan_proc_rem_dev(dev); + if (vlan_proc_add_dev(dev) < 0) + pr_warning("8021q: failed to change proc name for %s\n", + dev->name); + break; + } +} + static int vlan_device_event(struct notifier_block *unused, unsigned long event, void *ptr) { struct net_device *dev = ptr; - struct vlan_group *grp = __vlan_find_group(dev->ifindex); + struct vlan_group *grp; int i, flgs; struct net_device *vlandev; if (dev->nd_net != &init_net) return NOTIFY_DONE; + if (is_vlan_dev(dev)) { + __vlan_device_event(dev, event); + goto out; + } + + grp = __vlan_find_group(dev->ifindex); if (!grp) goto out; diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h index 73efcc715cc..51271aea402 100644 --- a/net/8021q/vlan.h +++ b/net/8021q/vlan.h @@ -45,4 +45,9 @@ void vlan_netlink_fini(void); extern struct rtnl_link_ops vlan_link_ops; +static inline int is_vlan_dev(struct net_device *dev) +{ + return dev->priv_flags & IFF_802_1Q_VLAN; +} + #endif /* !(__BEN_VLAN_802_1Q_INC__) */ diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c index 146cfb0e988..9671aa51af2 100644 --- a/net/8021q/vlanproc.c +++ b/net/8021q/vlanproc.c @@ -210,11 +210,6 @@ int vlan_proc_rem_dev(struct net_device *vlandev) * The following few functions build the content of /proc/net/vlan/config */ -static inline int is_vlan_dev(struct net_device *dev) -{ - return dev->priv_flags & IFF_802_1Q_VLAN; -} - /* start read of /proc/net/vlan/config */ static void *vlan_seq_start(struct seq_file *seq, loff_t *pos) __acquires(dev_base_lock) |