From patchwork Wed Apr 13 15:30:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maciej Fijalkowski X-Patchwork-Id: 12812152 X-Patchwork-Delegate: bpf@iogearbox.net 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1746FC433EF for ; Wed, 13 Apr 2022 15:31:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236519AbiDMPdV (ORCPT ); Wed, 13 Apr 2022 11:33:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57680 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236543AbiDMPdQ (ORCPT ); Wed, 13 Apr 2022 11:33:16 -0400 Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 202A237AB2; Wed, 13 Apr 2022 08:30:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1649863855; x=1681399855; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=GEOFI2L+Sr82ytthmiJvWAK5wJHfsuRxDbyttCm5JNQ=; b=lAMLez76tb38e3No8/dDRuloWRnBhecJ2ng1UNkCg4qQ6xpi+sGzVIWw CcQBU8/cHZUCyeZt/b1eSXK9GG8vIo/szO4IGRSes2lF2jFGdCT0A14Ev qUaRPnE2RVqPUeaGtIJOKc/S7XFWQhTrd6cdI7YSWSaKFA04gxvutLvZl 5He2H3inOFLMs6VaVVtljMdNyrcq8oY5WWQR5CvBd4OjpEbUfCh4enQCK gc3dmQ6T+PQD4n/Bf82PSz/N4qNSGTH8Jjm+HHfvpwziLkRgeW+AvUwda jOToB2RYssgvGiOTuBvLQUTpdcZ+Sf150w9e1JazFF44ab31b5FkzhRBN g==; X-IronPort-AV: E=McAfee;i="6400,9594,10316"; a="261544303" X-IronPort-AV: E=Sophos;i="5.90,257,1643702400"; d="scan'208";a="261544303" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Apr 2022 08:30:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,257,1643702400"; d="scan'208";a="573318367" Received: from boxer.igk.intel.com ([10.102.20.173]) by orsmga008.jf.intel.com with ESMTP; 13 Apr 2022 08:30:52 -0700 From: Maciej Fijalkowski To: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net Cc: netdev@vger.kernel.org, magnus.karlsson@intel.com, alexandr.lobakin@intel.com, maximmi@nvidia.com, kuba@kernel.org, bjorn@kernel.org, Maciej Fijalkowski Subject: [PATCH v2 bpf-next 09/14] i40e: xsk: diversify return values from xsk_wakeup call paths Date: Wed, 13 Apr 2022 17:30:10 +0200 Message-Id: <20220413153015.453864-10-maciej.fijalkowski@intel.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20220413153015.453864-1-maciej.fijalkowski@intel.com> References: <20220413153015.453864-1-maciej.fijalkowski@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: bpf@iogearbox.net Currently, when debugging AF_XDP workloads, one can correlate the -ENXIO return code as the case that XSK is not in the bound state. Returning same code from ndo_xsk_wakeup can be misleading and simply makes it harder to follow what is going on. Change ENXIOs in i40e's ndo_xsk_wakeup() implementation to EINVALs, so that when probing it is clear that something is wrong on the driver side, not the xsk_{recv,send}msg. There is a -ENETDOWN that can happen from both kernel/driver sides though, but I don't have a correct replacement for this on one of the sides, so let's keep it that way. Signed-off-by: Maciej Fijalkowski --- drivers/net/ethernet/intel/i40e/i40e_xsk.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.c b/drivers/net/ethernet/intel/i40e/i40e_xsk.c index 94ea8288859a..050280fd10c1 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_xsk.c +++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.c @@ -606,13 +606,13 @@ int i40e_xsk_wakeup(struct net_device *dev, u32 queue_id, u32 flags) return -ENETDOWN; if (!i40e_enabled_xdp_vsi(vsi)) - return -ENXIO; + return -EINVAL; if (queue_id >= vsi->num_queue_pairs) - return -ENXIO; + return -EINVAL; if (!vsi->xdp_rings[queue_id]->xsk_pool) - return -ENXIO; + return -EINVAL; ring = vsi->xdp_rings[queue_id];