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xfrm: add net device refcount tracker to struct xfrm_state_offload
Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Steffen Klassert <steffen.klassert@secunet.com> Link: https://lore.kernel.org/r/20211209154451.4184050-1-eric.dumazet@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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@ -128,6 +128,7 @@ struct xfrm_state_walk {
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struct xfrm_state_offload {
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struct net_device *dev;
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netdevice_tracker dev_tracker;
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struct net_device *real_dev;
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unsigned long offload_handle;
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unsigned int num_exthdrs;
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@ -1913,7 +1914,7 @@ static inline void xfrm_dev_state_free(struct xfrm_state *x)
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if (dev->xfrmdev_ops->xdo_dev_state_free)
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dev->xfrmdev_ops->xdo_dev_state_free(x);
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xso->dev = NULL;
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dev_put(dev);
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dev_put_track(dev, &xso->dev_tracker);
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}
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}
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#else
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@ -259,6 +259,7 @@ int xfrm_dev_state_add(struct net *net, struct xfrm_state *x,
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}
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xso->dev = dev;
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netdev_tracker_alloc(dev, &xso->dev_tracker, GFP_ATOMIC);
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xso->real_dev = dev;
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xso->num_exthdrs = 1;
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xso->flags = xuo->flags;
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@ -269,7 +270,7 @@ int xfrm_dev_state_add(struct net *net, struct xfrm_state *x,
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xso->flags = 0;
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xso->dev = NULL;
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xso->real_dev = NULL;
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dev_put(dev);
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dev_put_track(dev, &xso->dev_tracker);
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if (err != -EOPNOTSUPP)
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return err;
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