diff options
| author | Jakub Kicinski <jakub.kicinski@netronome.com> | 2019-02-25 19:34:06 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-02-26 08:49:05 -0800 |
| commit | 1b45ff6c17f1d07c496b08dd602a4aff8fe40848 (patch) | |
| tree | 8e7cc2289a7e48072dc3db8690e709828debb7d9 /net/core/devlink.c | |
| parent | 03969b941486b208e2e418acbcf7065c740e7a5e (diff) | |
| download | lwn-1b45ff6c17f1d07c496b08dd602a4aff8fe40848.tar.gz lwn-1b45ff6c17f1d07c496b08dd602a4aff8fe40848.zip | |
devlink: hold a reference to the netdevice around ethtool compat
When ethtool is calling into devlink compat code make sure we have
a reference on the netdevice on which the operation was invoked.
v3: move the hold/lock logic into devlink_compat_* functions (Florian)
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/devlink.c')
| -rw-r--r-- | net/core/devlink.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/net/core/devlink.c b/net/core/devlink.c index 24bfbd2d71e7..ecff6e63bc4d 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -6430,6 +6430,9 @@ void devlink_compat_running_version(struct net_device *dev, { struct devlink *devlink; + dev_hold(dev); + rtnl_unlock(); + mutex_lock(&devlink_mutex); devlink = netdev_to_devlink(dev); if (!devlink || !devlink->ops || !devlink->ops->info_get) @@ -6440,6 +6443,9 @@ void devlink_compat_running_version(struct net_device *dev, mutex_unlock(&devlink->lock); unlock_list: mutex_unlock(&devlink_mutex); + + rtnl_lock(); + dev_put(dev); } int devlink_compat_flash_update(struct net_device *dev, const char *file_name) @@ -6447,6 +6453,9 @@ int devlink_compat_flash_update(struct net_device *dev, const char *file_name) struct devlink *devlink; int ret = -EOPNOTSUPP; + dev_hold(dev); + rtnl_unlock(); + mutex_lock(&devlink_mutex); devlink = netdev_to_devlink(dev); if (!devlink || !devlink->ops || !devlink->ops->flash_update) @@ -6457,6 +6466,10 @@ int devlink_compat_flash_update(struct net_device *dev, const char *file_name) mutex_unlock(&devlink->lock); unlock_list: mutex_unlock(&devlink_mutex); + + rtnl_lock(); + dev_put(dev); + return ret; } |