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| author | Jakub Kicinski <kuba@kernel.org> | 2023-10-17 18:38:16 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-25 12:16:30 +0200 |
| commit | 5a7b9ca3ec2c4041afdf19b1e4cfcae1df04e420 (patch) | |
| tree | fd19067600baadd297f6e89d1ed60ff9cf18af20 /net | |
| parent | b583bfcc5a36dbd1db1984dbfcfd23ba64d23604 (diff) | |
| download | linux-5a7b9ca3ec2c4041afdf19b1e4cfcae1df04e420.tar.gz linux-5a7b9ca3ec2c4041afdf19b1e4cfcae1df04e420.tar.bz2 linux-5a7b9ca3ec2c4041afdf19b1e4cfcae1df04e420.zip | |
net: move altnames together with the netdevice
commit 8e15aee621618a3ee3abecaf1fd8c1428098b7ef upstream.
The altname nodes are currently not moved to the new netns
when netdevice itself moves:
[ ~]# ip netns add test
[ ~]# ip -netns test link add name eth0 type dummy
[ ~]# ip -netns test link property add dev eth0 altname some-name
[ ~]# ip -netns test link show dev some-name
2: eth0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether 1e:67:ed:19:3d:24 brd ff:ff:ff:ff:ff:ff
altname some-name
[ ~]# ip -netns test link set dev eth0 netns 1
[ ~]# ip link
...
3: eth0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether 02:40:88:62:ec:b8 brd ff:ff:ff:ff:ff:ff
altname some-name
[ ~]# ip li show dev some-name
Device "some-name" does not exist.
Remove them from the hash table when device is unlisted
and add back when listed again.
Fixes: 36fbf1e52bd3 ("net: rtnetlink: add linkprop commands to add and delete alternative ifnames")
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/dev.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 45ec18d8b0f6..fe8c46c46505 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -379,6 +379,7 @@ static void netdev_name_node_alt_flush(struct net_device *dev) /* Device list insertion */ static void list_netdevice(struct net_device *dev) { + struct netdev_name_node *name_node; struct net *net = dev_net(dev); ASSERT_RTNL(); @@ -390,6 +391,9 @@ static void list_netdevice(struct net_device *dev) dev_index_hash(net, dev->ifindex)); write_unlock(&dev_base_lock); + netdev_for_each_altname(dev, name_node) + netdev_name_node_add(net, name_node); + dev_base_seq_inc(net); } @@ -398,8 +402,13 @@ static void list_netdevice(struct net_device *dev) */ static void unlist_netdevice(struct net_device *dev, bool lock) { + struct netdev_name_node *name_node; + ASSERT_RTNL(); + netdev_for_each_altname(dev, name_node) + netdev_name_node_del(name_node); + /* Unlink dev from the device chain */ if (lock) write_lock(&dev_base_lock); @@ -10854,7 +10863,6 @@ void unregister_netdevice_many_notify(struct list_head *head, synchronize_net(); list_for_each_entry(dev, head, unreg_list) { - struct netdev_name_node *name_node; struct sk_buff *skb = NULL; /* Shutdown queueing discipline. */ @@ -10882,9 +10890,6 @@ void unregister_netdevice_many_notify(struct list_head *head, dev_uc_flush(dev); dev_mc_flush(dev); - netdev_for_each_altname(dev, name_node) - netdev_name_node_del(name_node); - synchronize_rcu(); netdev_name_node_alt_flush(dev); netdev_name_node_free(dev->name_node); |