Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751447AbdFBTdY (ORCPT ); Fri, 2 Jun 2017 15:33:24 -0400 Received: from mail.kernel.org ([198.145.29.99]:56018 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751309AbdFBTcC (ORCPT ); Fri, 2 Jun 2017 15:32:02 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D9F4C23A27 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=sstabellini@kernel.org From: Stefano Stabellini To: xen-devel@lists.xen.org Cc: linux-kernel@vger.kernel.org, sstabellini@kernel.org, jgross@suse.com, boris.ostrovsky@oracle.com, Stefano Stabellini Subject: [PATCH v3 14/18] xen/pvcalls: disconnect and module_exit Date: Fri, 2 Jun 2017 12:31:51 -0700 Message-Id: <1496431915-20774-14-git-send-email-sstabellini@kernel.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1496431915-20774-1-git-send-email-sstabellini@kernel.org> References: <1496431915-20774-1-git-send-email-sstabellini@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2193 Lines: 79 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 CC: boris.ostrovsky@oracle.com CC: jgross@suse.com --- drivers/xen/pvcalls-back.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c index b541887..6afe7a0 100644 --- a/drivers/xen/pvcalls-back.c +++ b/drivers/xen/pvcalls-back.c @@ -800,6 +800,38 @@ static int backend_connect(struct xenbus_device *dev) static int backend_disconnect(struct xenbus_device *dev) { + struct pvcalls_fedata *priv; + struct sock_mapping *map, *n; + struct sockpass_mapping *mappass; + struct radix_tree_iter iter; + void **slot; + + + priv = dev_get_drvdata(&dev->dev); + + list_for_each_entry_safe(map, n, &priv->socket_mappings, list) { + pvcalls_back_release_active(dev, priv, map); + } + + radix_tree_for_each_slot(slot, &priv->socketpass_mappings, &iter, 0) { + mappass = radix_tree_deref_slot(slot); + if (!mappass || radix_tree_exception(mappass)) { + if (radix_tree_deref_retry(mappass)) { + slot = radix_tree_iter_retry(&iter); + continue; + } + } else + pvcalls_back_release_passive(dev, priv, mappass); + } + + xenbus_unmap_ring_vfree(dev, (void *)priv->sring); + unbind_from_irqhandler(priv->irq, dev); + + list_del(&priv->list); + destroy_workqueue(priv->wq); + kfree(priv); + dev_set_drvdata(&dev->dev, NULL); + return 0; } @@ -993,3 +1025,20 @@ static int __init pvcalls_back_init(void) return 0; } module_init(pvcalls_back_init); + +static void __exit pvcalls_back_fin(void) +{ + struct pvcalls_fedata *priv, *npriv; + + down(&pvcalls_back_global.frontends_lock); + list_for_each_entry_safe(priv, npriv, &pvcalls_back_global.frontends, + list) { + backend_disconnect(priv->dev); + } + up(&pvcalls_back_global.frontends_lock); + + xenbus_unregister_driver(&pvcalls_back_driver); + memset(&pvcalls_back_global, 0, sizeof(pvcalls_back_global)); +} + +module_exit(pvcalls_back_fin); -- 1.9.1