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 X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 711ADC2D0A7 for ; Thu, 10 Sep 2020 21:26:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2FFA421D92 for ; Thu, 10 Sep 2020 21:26:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599773191; bh=7cSBis6ieClEk+sEqsxJSISWCI6GmvYwiBg/oxz8Jws=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=nDv1hoT+ul56ZOuTdKqVtngHv+c4sXStrEPqR1ey3g1fQa8YpOy25ILkgbW4O1oPH GhcAoFS2rgczb5V0tn6BLAkIg8rFRa6jip89pSxldWq3ia1HQrTj0GV169aJYlw/zx RChNXuWhMKKGlyHcqi/xXTytwmsfUTbdNsOc8v+E= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727983AbgIJV03 (ORCPT ); Thu, 10 Sep 2020 17:26:29 -0400 Received: from mail.kernel.org ([198.145.29.99]:46030 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730740AbgIJOXG (ORCPT ); Thu, 10 Sep 2020 10:23:06 -0400 Received: from localhost (unknown [213.57.247.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4306520C09; Thu, 10 Sep 2020 14:22:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599747733; bh=7cSBis6ieClEk+sEqsxJSISWCI6GmvYwiBg/oxz8Jws=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VCGf0saAAeeCkEmSYZET82P7NxVDy1hswdS8SfqmPYAIK5uDQitNg860oOl+AWqRr M1+7GUHWVHzeXI+CXL6z5wg6eetKw/xfT0ifC0RFqGrbNuNCdv9Kty1dcCuUNVzClD bNklfJgJJ8/rg5RBHsGPjZSUDK7LVhzJ1oyIOKyc= From: Leon Romanovsky To: Doug Ledford , Jason Gunthorpe Cc: Avihai Horon , linux-rdma@vger.kernel.org Subject: [PATCH rdma-next 1/4] RDMA/core: Change rdma_get_gid_attr returned error code Date: Thu, 10 Sep 2020 17:22:01 +0300 Message-Id: <20200910142204.1309061-2-leon@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200910142204.1309061-1-leon@kernel.org> References: <20200910142204.1309061-1-leon@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Avihai Horon Change the error code returned from rdma_get_gid_attr when the GID entry is invalid but the GID index is in the gid table size range to -ENODATA instead of -EINVAL. This change is done in order to provide a more accurate error reporting to be used by the new GID query API in user space. Nevertheless, -EINVAL is still returned from sysfs in the aforementioned case to maintain compatibility with user space that expects -EINVAL. Signed-off-by: Avihai Horon Signed-off-by: Leon Romanovsky --- drivers/infiniband/core/cache.c | 2 +- drivers/infiniband/core/sysfs.c | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index ffad73bb40ff..6079f1f7e678 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -1220,7 +1220,7 @@ EXPORT_SYMBOL(ib_get_cached_port_state); const struct ib_gid_attr * rdma_get_gid_attr(struct ib_device *device, u8 port_num, int index) { - const struct ib_gid_attr *attr = ERR_PTR(-EINVAL); + const struct ib_gid_attr *attr = ERR_PTR(-ENODATA); struct ib_gid_table *table; unsigned long flags; diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index 01d85da00187..1a5507b79437 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -391,7 +391,8 @@ static ssize_t _show_port_gid_attr( gid_attr = rdma_get_gid_attr(p->ibdev, p->port_num, tab_attr->index); if (IS_ERR(gid_attr)) - return PTR_ERR(gid_attr); + /* -EINVAL is returned for user space compatibility reasons. */ + return -EINVAL; ret = print(gid_attr, buf); rdma_put_gid_attr(gid_attr); -- 2.26.2