[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v6 14/18] xen/pvcalls: disconnect and module_exit
On 03/07/17 23:08, Stefano Stabellini wrote: > Implement backend_disconnect. Call pvcalls_back_release_active on active > sockets and pvcalls_back_release_passive on passive sockets. > > Implement module_exit by calling backend_disconnect on frontend > connections. > > Signed-off-by: Stefano Stabellini <stefano@xxxxxxxxxxx> > CC: boris.ostrovsky@xxxxxxxxxx > CC: jgross@xxxxxxxx > --- > drivers/xen/pvcalls-back.c | 52 > ++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 52 insertions(+) > > diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c > index 9f4247f..71a42fc 100644 > --- a/drivers/xen/pvcalls-back.c > +++ b/drivers/xen/pvcalls-back.c > @@ -807,6 +807,42 @@ static int backend_connect(struct xenbus_device *dev) > > static int backend_disconnect(struct xenbus_device *dev) > { > + struct pvcalls_fedata *fedata; > + struct sock_mapping *map, *n; > + struct sockpass_mapping *mappass; > + struct radix_tree_iter iter; > + void **slot; > + > + > + fedata = dev_get_drvdata(&dev->dev); > + > + down(&fedata->socket_lock); > + list_for_each_entry_safe(map, n, &fedata->socket_mappings, list) { > + list_del(&map->list); > + pvcalls_back_release_active(dev, fedata, map); > + } > + > + radix_tree_for_each_slot(slot, &fedata->socketpass_mappings, &iter, 0) { > + mappass = radix_tree_deref_slot(slot); > + if (!mappass) > + continue; > + if (radix_tree_exception(mappass)) { > + if (radix_tree_deref_retry(mappass)) > + slot = radix_tree_iter_retry(&iter); > + } else { > + radix_tree_delete(&fedata->socketpass_mappings, > mappass->id); > + pvcalls_back_release_passive(dev, fedata, mappass); > + } > + } > + up(&fedata->socket_lock); > + > + xenbus_unmap_ring_vfree(dev, fedata->sring); > + unbind_from_irqhandler(fedata->irq, dev); Swap above two lines to avoid irq being handled after releasing ring? Juergen _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |