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IPoIB: change init sequence ordering

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In preparation for using per device work queues, we need to move the
start of the neighbor thread task to after ipoib_ib_dev_init and move
the destruction of the neighbor task to before ipoib_ib_dev_cleanup.
Otherwise we will end up freeing our workqueue with work possibly
still on it.

Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Doug Ledford 2014-12-10 11:47:02 -05:00 committed by Roland Dreier
parent e5d1dcf1b0
commit 3bcce487fd
1 changed files with 17 additions and 7 deletions
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24
drivers/infiniband/ulp/ipoib/ipoib_main.c
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@ -1262,15 +1262,13 @@ int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
if (ipoib_neigh_hash_init(priv) < 0)
goto out;
/* Allocate RX/TX "rings" to hold queued skbs */
priv->rx_ring = kzalloc(ipoib_recvq_size * sizeof *priv->rx_ring,
GFP_KERNEL);
if (!priv->rx_ring) {
printk(KERN_WARNING "%s: failed to allocate RX ring (%d entries)\n",
ca->name, ipoib_recvq_size);
goto out_neigh_hash_cleanup;
goto out;
}
priv->tx_ring = vzalloc(ipoib_sendq_size * sizeof *priv->tx_ring);
@ -1285,16 +1283,24 @@ int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port)
if (ipoib_ib_dev_init(dev, ca, port))
goto out_tx_ring_cleanup;
/*
* Must be after ipoib_ib_dev_init so we can allocate a per
* device wq there and use it here
*/
if (ipoib_neigh_hash_init(priv) < 0)
goto out_dev_uninit;
return 0;
out_dev_uninit:
ipoib_ib_dev_cleanup();
out_tx_ring_cleanup:
vfree(priv->tx_ring);
out_rx_ring_cleanup:
kfree(priv->rx_ring);
out_neigh_hash_cleanup:
ipoib_neigh_hash_uninit(dev);
out:
return -ENOMEM;
}
@ -1317,6 +1323,12 @@ void ipoib_dev_cleanup(struct net_device *dev)
}
unregister_netdevice_many(&head);
/*
* Must be before ipoib_ib_dev_cleanup or we delete an in use
* work queue
*/
ipoib_neigh_hash_uninit(dev);
ipoib_ib_dev_cleanup(dev);
kfree(priv->rx_ring);
@ -1324,8 +1336,6 @@ void ipoib_dev_cleanup(struct net_device *dev)
priv->rx_ring = NULL;
priv->tx_ring = NULL;
ipoib_neigh_hash_uninit(dev);
}
static const struct header_ops ipoib_header_ops = {