forked from Minki/linux
IPoIB: Rejoin all multicast groups after a port event
When ipoib_ib_dev_flush() is called because of a port event, the driver needs to rejoin all multicast groups, since the flush will call ipoib_mcast_dev_flush() (via ipoib_ib_dev_down()). Otherwise no (non-broadcast) multicast groups will be rejoined until the networking core calls ->set_multicast_list again, and so multicast reception will be broken for potentially a long time. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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@ -631,8 +631,10 @@ void ipoib_ib_dev_flush(void *_dev)
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* The device could have been brought down between the start and when
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* we get here, don't bring it back up if it's not configured up
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*/
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if (test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))
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if (test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) {
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ipoib_ib_dev_up(dev);
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ipoib_mcast_restart_task(dev);
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}
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mutex_lock(&priv->vlan_mutex);
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