[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v1 12/13] xen/pvcalls: implement frontend disconnect
Implement pvcalls frontend removal function. Go through the list of active and passive sockets and free them all, one at a time. Signed-off-by: Stefano Stabellini <stefano@xxxxxxxxxxx> CC: boris.ostrovsky@xxxxxxxxxx CC: jgross@xxxxxxxx --- drivers/xen/pvcalls-front.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/xen/pvcalls-front.c b/drivers/xen/pvcalls-front.c index bd3dfac..fcc15fb 100644 --- a/drivers/xen/pvcalls-front.c +++ b/drivers/xen/pvcalls-front.c @@ -898,6 +898,34 @@ int pvcalls_front_release(struct socket *sock) static int pvcalls_front_remove(struct xenbus_device *dev) { + struct pvcalls_bedata *bedata; + struct sock_mapping *map = NULL, *n; + + bedata = dev_get_drvdata(&pvcalls_front_dev->dev); + + list_for_each_entry_safe(map, n, &bedata->socket_mappings, list) { + mutex_lock(&map->active.in_mutex); + mutex_lock(&map->active.out_mutex); + pvcalls_front_free_map(bedata, map); + mutex_unlock(&map->active.out_mutex); + mutex_unlock(&map->active.in_mutex); + kfree(map); + } + list_for_each_entry_safe(map, n, &bedata->socketpass_mappings, list) { + spin_lock(&bedata->pvcallss_lock); + list_del_init(&map->list); + spin_unlock(&bedata->pvcallss_lock); + kfree(map); + } + if (bedata->irq > 0) + unbind_from_irqhandler(bedata->irq, dev); + if (bedata->ref >= 0) + gnttab_end_foreign_access(bedata->ref, 0, 0); + kfree(bedata->ring.sring); + kfree(bedata); + dev_set_drvdata(&dev->dev, NULL); + xenbus_switch_state(dev, XenbusStateClosed); + pvcalls_front_dev = NULL; return 0; } -- 1.9.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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