From patchwork Tue Feb 12 16:51:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Parav Pandit X-Patchwork-Id: 1040710 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=mellanox.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43zTGC1kJdz9s3x for ; Wed, 13 Feb 2019 03:52:03 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731225AbfBLQwC (ORCPT ); Tue, 12 Feb 2019 11:52:02 -0500 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:44281 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1731145AbfBLQwB (ORCPT ); Tue, 12 Feb 2019 11:52:01 -0500 Received: from Internal Mail-Server by MTLPINE1 (envelope-from parav@mellanox.com) with ESMTPS (AES256-SHA encrypted); 12 Feb 2019 18:52:00 +0200 Received: from sw-mtx-036.mtx.labs.mlnx (sw-mtx-036.mtx.labs.mlnx [10.12.150.149]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id x1CGpwEQ025322; Tue, 12 Feb 2019 18:51:59 +0200 From: Parav Pandit To: jiri@mellanox.com, davem@davemloft.net, netdev@vger.kernel.org Cc: parav@mellanox.com Subject: [PATCHv1 net-next 1/2] devlink: Return right error code in case of errors for region read Date: Tue, 12 Feb 2019 10:51:56 -0600 Message-Id: <1549990316-45713-1-git-send-email-parav@mellanox.com> X-Mailer: git-send-email 1.8.3.1 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org devlink_nl_cmd_region_read_dumpit() misses to return right error code on most error conditions. Return the right error code on such errors. Fixes: 4e54795a27f5 ("devlink: Add support for region snapshot read command") Signed-off-by: Parav Pandit Acked-by: Jiri Pirko --- net/core/devlink.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) diff --git a/net/core/devlink.c b/net/core/devlink.c index 5e2ef5a..8a198ba 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -3643,26 +3643,34 @@ static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb, goto out; devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs); - if (IS_ERR(devlink)) + if (IS_ERR(devlink)) { + err = -ENODEV; goto out; + } mutex_lock(&devlink_mutex); mutex_lock(&devlink->lock); if (!attrs[DEVLINK_ATTR_REGION_NAME] || - !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) + !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) { + err = -EINVAL; goto out_unlock; + } region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]); region = devlink_region_get_by_name(devlink, region_name); - if (!region) + if (!region) { + err = -EINVAL; goto out_unlock; + } hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, DEVLINK_CMD_REGION_READ); - if (!hdr) + if (!hdr) { + err = -EMSGSIZE; goto out_unlock; + } err = devlink_nl_put_handle(skb, devlink); if (err) @@ -3673,8 +3681,10 @@ static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb, goto nla_put_failure; chunks_attr = nla_nest_start(skb, DEVLINK_ATTR_REGION_CHUNKS); - if (!chunks_attr) + if (!chunks_attr) { + err = -EMSGSIZE; goto nla_put_failure; + } if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] && attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) { @@ -3715,7 +3725,7 @@ static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb, mutex_unlock(&devlink->lock); mutex_unlock(&devlink_mutex); out: - return 0; + return err; } struct devlink_info_req {