evie/android_kernel_oneplus_msm8998
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bridge: Propagate vlan add failure to user

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commit 08474cc1e6ea71237cab7e4a651a623c9dea1084 upstream.

Disallow adding interfaces to a bridge when vlan filtering operation
failed. Send the failure code to the user.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: SZ Lin (林上智) <sz.lin@moxa.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Elad Raz 2016-01-06 13:01:04 +01:00 • committed by Greg Kroah-Hartman
parent 62c4e369c9
commit 6d124ea608
1 changed files with 10 additions and 1 deletions
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11
net/bridge/br_if.c
View file

@ -511,8 +511,11 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
if (br_fdb_insert(br, p, dev->dev_addr, 0))
netdev_err(dev, "failed insert local address bridge forwarding table\n");
if (nbp_vlan_init(p))
err = nbp_vlan_init(p);
if (err) {
netdev_err(dev, "failed to initialize vlan filtering on this port\n");
goto err6;
}
spin_lock_bh(&br->lock);
changed_addr = br_stp_recalculate_bridge_id(br);
@ -533,6 +536,12 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
return 0;
err6:
list_del_rcu(&p->list);
br_fdb_delete_by_port(br, p, 0, 1);
nbp_update_port_count(br);
netdev_upper_dev_unlink(dev, br->dev);
err5:
dev->priv_flags &= ~IFF_BRIDGE_PORT;
netdev_rx_handler_unregister(dev);