diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2018-03-09 10:39:24 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-03-09 13:00:08 -0500 |
| commit | f5426250a6ecfd1e9b2d5e0daf07565f664aa67d (patch) | |
| tree | 581f433bcf7a7a09e5d869aaeeee045bb2725ff5 /net/core/dev.c | |
| parent | d185efc1da089b968dfe1825329c51820d661755 (diff) | |
net: introduce IFF_NO_RX_HANDLER
Some network devices - notably ipvlan slave - are not compatible with
any kind of rx_handler. Currently the hook can be installed but any
configuration (bridge, bond, macsec, ...) is nonfunctional.
This change allocates a priv_flag bit to mark such devices and explicitly
forbid installing a rx_handler if such bit is set. The new bit is used
by ipvlan slave device.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index e5b8d42b6410..259abb1515d0 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -4351,6 +4351,9 @@ int netdev_rx_handler_register(struct net_device *dev, if (netdev_is_rx_handler_busy(dev)) return -EBUSY; + if (dev->priv_flags & IFF_NO_RX_HANDLER) + return -EINVAL; + /* Note: rx_handler_data must be set before rx_handler */ rcu_assign_pointer(dev->rx_handler_data, rx_handler_data); rcu_assign_pointer(dev->rx_handler, rx_handler); |