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| author | Jakub Kicinski <kuba@kernel.org> | 2023-03-17 01:02:34 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-03-17 07:33:08 +0300 |
| commit | 769639c1fe8a98129aa97c8ee981639db1e8955c (patch) | |
| tree | 3ba4eecfced473a56b0a1738b9f09d26e0def3ab /net | |
| parent | 85578fe4933f55fed2145e3cd2909a8e2e55c108 (diff) | |
| download | linux-769639c1fe8a98129aa97c8ee981639db1e8955c.tar.xz | |
net: xdp: don't call notifiers during driver init
Drivers will commonly perform feature setting during init, if they use
the xdp_set_features_flag() helper they'll likely run into an ASSERT_RTNL()
inside call_netdevice_notifiers_info().
Don't call the notifier until the device is actually registered.
Nothing should be tracking the device until its registered and
after its unregistration has started.
Fixes: 4d5ab0ad964d ("net/mlx5e: take into account device reconfiguration for xdp_features flag")
Link: https://lore.kernel.org/r/20230316220234.598091-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/xdp.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/core/xdp.c b/net/core/xdp.c index 87e654b7d06c..b5737e47ec41 100644 --- a/net/core/xdp.c +++ b/net/core/xdp.c @@ -781,7 +781,9 @@ void xdp_set_features_flag(struct net_device *dev, xdp_features_t val) return; dev->xdp_features = val; - call_netdevice_notifiers(NETDEV_XDP_FEAT_CHANGE, dev); + + if (dev->reg_state == NETREG_REGISTERED) + call_netdevice_notifiers(NETDEV_XDP_FEAT_CHANGE, dev); } EXPORT_SYMBOL_GPL(xdp_set_features_flag); |