From patchwork Wed Apr 13 15:30:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maciej Fijalkowski X-Patchwork-Id: 12812154 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 205D9C433EF for ; Wed, 13 Apr 2022 15:31:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236552AbiDMPd2 (ORCPT ); Wed, 13 Apr 2022 11:33:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58424 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236549AbiDMPd0 (ORCPT ); Wed, 13 Apr 2022 11:33:26 -0400 Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4C3BE37AB0; Wed, 13 Apr 2022 08:31:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1649863860; x=1681399860; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=W0ivcRo/CNJCiHsXXiZIy0nwpm+Mc6B1Iwk6iOajJno=; b=BBjEnQ50sRuDbeD1+YRY6b8+h8LCR0t5PyXTaeSIMrLfUGqz3dbPUBSn JkFY3aKv/102/bRuXLyvydYeHdCWuutwf+ByjcQexyFWtNcogeATxBo2z AkrHfoNwW2FH+yFSgrKZmrxca9Rcx4XPMr5QmRIH6CwVgdiAdJcrkd/qT kQEjaEmaOId35jZHzDY9oEdfCb3SxFidmGIgk+r+BISpFPq/nTXFDxCk4 jtEXqn3xjZq5pm2IfGUtMWtJl/ttqk3tKphRv4G0s48oOvqiNjqljA4tw Enp6xweA13RbkcxoV1wiD/fAaojznDSZ12SNNm75QYxPQs2LuTwIv0P1L w==; X-IronPort-AV: E=McAfee;i="6400,9594,10316"; a="261544320" X-IronPort-AV: E=Sophos;i="5.90,257,1643702400"; d="scan'208";a="261544320" 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 08:30:59 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,257,1643702400"; d="scan'208";a="573318405" Received: from boxer.igk.intel.com ([10.102.20.173]) by orsmga008.jf.intel.com with ESMTP; 13 Apr 2022 08:30:57 -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 11/14] mlx5: xsk: diversify return values from xsk_wakeup call paths Date: Wed, 13 Apr 2022 17:30:12 +0200 Message-Id: <20220413153015.453864-12-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 ENXIO in mlx5's ndo_xsk_wakeup() implementation to EINVAL, 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/mellanox/mlx5/core/en/xsk/tx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/tx.c index 3ec0c17db010..4902ef74fedf 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/tx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/tx.c @@ -23,7 +23,7 @@ int mlx5e_xsk_wakeup(struct net_device *dev, u32 qid, u32 flags) c = priv->channels.c[ix]; if (unlikely(!test_bit(MLX5E_CHANNEL_STATE_XSK, c->state))) - return -ENXIO; + return -EINVAL; if (!napi_if_scheduled_mark_missed(&c->napi)) { /* To avoid WQE overrun, don't post a NOP if async_icosq is not