From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D16D5C433EF for ; Thu, 11 Nov 2021 15:41:26 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7CD246113A for ; Thu, 11 Nov 2021 15:41:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 7CD246113A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=yandex-team.ru Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:47898 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mlCCb-0001hk-Mg for qemu-devel@archiver.kernel.org; Thu, 11 Nov 2021 10:41:25 -0500 Received: from eggs.gnu.org ([209.51.188.92]:40530) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mlC5e-0004TG-67; Thu, 11 Nov 2021 10:34:14 -0500 Received: from forwardcorp1p.mail.yandex.net ([77.88.29.217]:40820) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mlC5b-00043B-HK; Thu, 11 Nov 2021 10:34:13 -0500 Received: from iva8-d2cd82b7433e.qloud-c.yandex.net (iva8-d2cd82b7433e.qloud-c.yandex.net [IPv6:2a02:6b8:c0c:a88e:0:640:d2cd:82b7]) by forwardcorp1p.mail.yandex.net (Yandex) with ESMTP id 6B4142E0F0C; Thu, 11 Nov 2021 18:34:04 +0300 (MSK) Received: from iva8-3a65cceff156.qloud-c.yandex.net (iva8-3a65cceff156.qloud-c.yandex.net [2a02:6b8:c0c:2d80:0:640:3a65:ccef]) by iva8-d2cd82b7433e.qloud-c.yandex.net (mxbackcorp/Yandex) with ESMTP id yQdTineD7N-Y3sauMY9; Thu, 11 Nov 2021 18:34:04 +0300 Precedence: bulk DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1636644844; bh=onBHYclEWqTrLTuKxrhI0qfx+uh/6jIvyO6vsNh5V+Y=; h=In-Reply-To:Message-Id:References:Date:Subject:To:From:Cc; b=PPeICqI8mBvlFzMqe+wp5rWKsTRJuXl46SoLjmQHgMlMvnbTx7be8vZB/ymZRLB4+ LDW4px5QoMqIvjlw5KZPAvCplIvf4s+XeAMvv3Nojud7OsQ7WLlu3NA4Vg2af4/TVd Bpm78yKGc4rSfnIwM0Db7yfsJi/LE/oT6kPtbQJs= Authentication-Results: iva8-d2cd82b7433e.qloud-c.yandex.net; dkim=pass header.i=@yandex-team.ru Received: from rvkaganb.lan (dynamic-vpn.dhcp.yndx.net [2a02:6b8:b081:8830::1:2d]) by iva8-3a65cceff156.qloud-c.yandex.net (smtpcorp/Yandex) with ESMTPS id WgGv8YbvMJ-Y3wCu82d; Thu, 11 Nov 2021 18:34:03 +0300 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client certificate not present) X-Yandex-Fwd: 2 From: Roman Kagan To: qemu-devel@nongnu.org Subject: [PATCH 07/10] vhost-vdpa: stick to -errno error return convention Date: Thu, 11 Nov 2021 18:33:51 +0300 Message-Id: <20211111153354.18807-8-rvkagan@yandex-team.ru> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211111153354.18807-1-rvkagan@yandex-team.ru> References: <20211111153354.18807-1-rvkagan@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=77.88.29.217; envelope-from=rvkagan@yandex-team.ru; helo=forwardcorp1p.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , qemu-block@nongnu.org, "Michael S. Tsirkin" , Raphael Norwitz , Hanna Reitz , yc-core@yandex-team.ru, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Almost all VhostOps methods in vdpa_ops follow the convention of returning negated errno on error. Adjust the few that don't. To that end, rework vhost_vdpa_add_status to check if setting of the requested status bits has succeeded and return the respective error code it hasn't, and propagate the error codes wherever it's appropriate. Signed-off-by: Roman Kagan --- hw/virtio/vhost-vdpa.c | 37 +++++++++++++++++++++++-------------- 1 file changed, 23 insertions(+), 14 deletions(-) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 0d8051426c..a3b885902a 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -292,18 +292,34 @@ static int vhost_vdpa_call(struct vhost_dev *dev, unsigned long int request, return ret < 0 ? -errno : ret; } -static void vhost_vdpa_add_status(struct vhost_dev *dev, uint8_t status) +static int vhost_vdpa_add_status(struct vhost_dev *dev, uint8_t status) { uint8_t s; + int ret; trace_vhost_vdpa_add_status(dev, status); - if (vhost_vdpa_call(dev, VHOST_VDPA_GET_STATUS, &s)) { - return; + ret = vhost_vdpa_call(dev, VHOST_VDPA_GET_STATUS, &s); + if (ret < 0) { + return ret; } s |= status; - vhost_vdpa_call(dev, VHOST_VDPA_SET_STATUS, &s); + ret = vhost_vdpa_call(dev, VHOST_VDPA_SET_STATUS, &s); + if (ret < 0) { + return ret; + } + + ret = vhost_vdpa_call(dev, VHOST_VDPA_GET_STATUS, &s); + if (ret < 0) { + return ret; + } + + if (!(s & status)) { + return -EIO; + } + + return 0; } static void vhost_vdpa_get_iova_range(struct vhost_vdpa *v) @@ -484,7 +500,7 @@ static int vhost_vdpa_set_mem_table(struct vhost_dev *dev, } } if (mem->padding) { - return -1; + return -EINVAL; } return 0; @@ -501,14 +517,11 @@ static int vhost_vdpa_set_features(struct vhost_dev *dev, trace_vhost_vdpa_set_features(dev, features); ret = vhost_vdpa_call(dev, VHOST_SET_FEATURES, &features); - uint8_t status = 0; if (ret) { return ret; } - vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_FEATURES_OK); - vhost_vdpa_call(dev, VHOST_VDPA_GET_STATUS, &status); - return !(status & VIRTIO_CONFIG_S_FEATURES_OK); + return vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_FEATURES_OK); } static int vhost_vdpa_set_backend_cap(struct vhost_dev *dev) @@ -650,12 +663,8 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev, bool started) } if (started) { - uint8_t status = 0; memory_listener_register(&v->listener, &address_space_memory); - vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK); - vhost_vdpa_call(dev, VHOST_VDPA_GET_STATUS, &status); - - return !(status & VIRTIO_CONFIG_S_DRIVER_OK); + return vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK); } else { vhost_vdpa_reset_device(dev); vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_ACKNOWLEDGE | -- 2.33.1