diff options
| author | Veaceslav Falico | 2013-09-25 09:20:31 +0200 |
|---|---|---|
| committer | David S. Miller | 2013-09-26 16:02:08 -0400 |
| commit | 842d67a7b34ea735155812ecf0671a481284f358 (patch) | |
| tree | 71b2de5b2ffda2fa7e41c1d9e9023eef51006394 | |
| parent | 47701a36a3ed6d97e5bbe7ad72cceb49ca329d00 (diff) | |
net: expose the master link to sysfs, and remove it from bond
Currently, we can have only one master upper neighbour, so it would be
useful to create a symlink to it in the sysfs device directory, the way
that bonding now does it, for every device. Lower devices from
bridge/team/etc will automagically get it, so we could rely on it.
Also, remove the same functionality from bonding.
CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: "David S. Miller" <davem@davemloft.net>
CC: Eric Dumazet <edumazet@google.com>
CC: Jiri Pirko <jiri@resnulli.us>
CC: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/bonding/bond_sysfs.c | 20 | ||||
| -rw-r--r-- | net/core/dev.c | 19 |
2 files changed, 20 insertions, 19 deletions
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index 04d95d6f6c63..1c5724672204 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -172,24 +172,11 @@ int bond_create_slave_symlinks(struct net_device *master, struct net_device *slave) { char linkname[IFNAMSIZ+7]; - int ret = 0; - /* first, create a link from the slave back to the master */ - ret = sysfs_create_link(&(slave->dev.kobj), &(master->dev.kobj), - "master"); - if (ret) - return ret; - /* next, create a link from the master to the slave */ + /* create a link from the master to the slave */ sprintf(linkname, "slave_%s", slave->name); - ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj), - linkname); - - /* free the master link created earlier in case of error */ - if (ret) - sysfs_remove_link(&(slave->dev.kobj), "master"); - - return ret; - + return sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj), + linkname); } void bond_destroy_slave_symlinks(struct net_device *master, @@ -197,7 +184,6 @@ void bond_destroy_slave_symlinks(struct net_device *master, { char linkname[IFNAMSIZ+7]; - sysfs_remove_link(&(slave->dev.kobj), "master"); sprintf(linkname, "slave_%s", slave->name); sysfs_remove_link(&(master->dev.kobj), linkname); } diff --git a/net/core/dev.c b/net/core/dev.c index acc11810805f..de443ee1b046 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -4584,6 +4584,7 @@ static int __netdev_adjacent_dev_insert(struct net_device *dev, void *private, bool master) { struct netdev_adjacent *adj; + int ret; adj = __netdev_find_adj(dev, adj_dev, dev_list); @@ -4606,12 +4607,23 @@ static int __netdev_adjacent_dev_insert(struct net_device *dev, adj_dev->name, dev->name, adj_dev->name); /* Ensure that master link is always the first item in list. */ - if (master) + if (master) { + ret = sysfs_create_link(&(dev->dev.kobj), + &(adj_dev->dev.kobj), "master"); + if (ret) + goto free_adj; + list_add_rcu(&adj->list, dev_list); - else + } else { list_add_tail_rcu(&adj->list, dev_list); + } return 0; + +free_adj: + kfree(adj); + + return ret; } void __netdev_adjacent_dev_remove(struct net_device *dev, @@ -4635,6 +4647,9 @@ void __netdev_adjacent_dev_remove(struct net_device *dev, return; } + if (adj->master) + sysfs_remove_link(&(dev->dev.kobj), "master"); + list_del_rcu(&adj->list); pr_debug("dev_put for %s, because link removed from %s to %s\n", adj_dev->name, dev->name, adj_dev->name); |