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=-16.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 9A2B7C43460 for ; Thu, 8 Apr 2021 09:10:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4098F61107 for ; Thu, 8 Apr 2021 09:10:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229687AbhDHJLH (ORCPT ); Thu, 8 Apr 2021 05:11:07 -0400 Received: from mail.kernel.org ([198.145.29.99]:57876 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229618AbhDHJLG (ORCPT ); Thu, 8 Apr 2021 05:11:06 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id F30AE6112F; Thu, 8 Apr 2021 09:10:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1617873055; bh=5dctzSWJ1wyaBdempll19M9OtI+cHdVwObvMPe6anR4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Dwmm1/HpIjRHKBGLF+S/ZGlfd2xfWThDd8z87fvJ7npCuygftzNxMSBcnWyy6g219 th9QKwT/qHegh/uU1S7Wr4Re5MiOW1hanE6UN1KBSne0RldZlHCkeOmTOvT3wWEQbZ 36VgqSnEEh/VhYU2+HjEJeLQCfkorlz3VixcBjTJX0RVuP6R5q57PJyLYdRCKHLKd6 dWkFZgYR51G4XqA8KBcR/bmjz7DawLurEtDWGEgDLioAskVPiSqCeGK/Xf4hTX6yUX caMRxUzdERK2PZeml0pASWtm1ckD2xoD+D8eiX4Sa6g+xOUD+q9FCKk77Gk0nIz+vN aXKw5STAoNUwg== Date: Thu, 8 Apr 2021 12:10:51 +0300 From: Leon Romanovsky To: Jack Wang Cc: linux-rdma@vger.kernel.org, bvanassche@acm.org, dledford@redhat.com, jgg@ziepe.ca Subject: Re: [PATCH] RDMA/ipoib: print a message if only child interface is UP Message-ID: References: <20210408083435.13043-1-jinpu.wang@ionos.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210408083435.13043-1-jinpu.wang@ionos.com> Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On Thu, Apr 08, 2021 at 10:34:35AM +0200, Jack Wang wrote: > When "enhanced IPoIB" enabled for CX-5 devices, it requires > the parent device to be UP, otherwise the child devices won't > work.[1] > > This add a debug message to give admin a hint, if only child interface > is UP, but parent interface is not. > > [1]https://lore.kernel.org/linux-rdma/CAMGffE=3YYxv9i7_qQr3-Uv-NGr-7VsnMk8DTjR0YbX1vJBzXQ@mail.gmail.com/T/#u > Signed-off-by: Jack Wang > --- > drivers/infiniband/ulp/ipoib/ipoib_main.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c > index e16b40c09f82..782b792985b8 100644 > --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c > +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c > @@ -164,8 +164,12 @@ int ipoib_open(struct net_device *dev) > dev_change_flags(cpriv->dev, flags | IFF_UP, NULL); > } > up_read(&priv->vlan_rwsem); > - } > + } else if (priv->parent) { > + struct ipoib_dev_priv *ppriv = ipoib_priv(priv->parent); > > + if (!test_bit(IPOIB_FLAG_ADMIN_UP, &ppriv->flags)) > + ipoib_dbg(priv, "parent deivce %s is not up, so child may be not functioning.\n", ((struct ipoib_dev_priv *) ppriv)->dev->name); Why do you need extra casting? "ppriv" is already "struct ipoib_dev_priv *". Thanks > + } > netif_start_queue(dev); > > return 0; > -- > 2.25.1 >