From patchwork Sat Jan 8 18:16:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dario Binacchi X-Patchwork-Id: 12707587 X-Patchwork-Delegate: kuba@kernel.org 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 4FE26C433EF for ; Sat, 8 Jan 2022 18:16:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232359AbiAHSQp (ORCPT ); Sat, 8 Jan 2022 13:16:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44990 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229957AbiAHSQo (ORCPT ); Sat, 8 Jan 2022 13:16:44 -0500 Received: from mail-ed1-x533.google.com (mail-ed1-x533.google.com [IPv6:2a00:1450:4864:20::533]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 998C2C061746 for ; Sat, 8 Jan 2022 10:16:40 -0800 (PST) Received: by mail-ed1-x533.google.com with SMTP id u25so35672519edf.1 for ; Sat, 08 Jan 2022 10:16:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=4VShwSPVfj7GfXP2tBCw17qNbBXH8y4PIVu4DylC+Yk=; b=deXjQd7iwt9NyWs3LiY3Y9oI7jXD9KYC0IAF+0hRTqNmUO46HyW8ILfoOLGfgz//vh bCPBuxZGgnjzyrl2hGUk+zougES865YL10Wa9bFX33dyhBpICNXBvbv61Ex2fXGdTLOW js2nQ8zOWSmp/Ib607pVKzFkn2YJ6TnrNafCE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=4VShwSPVfj7GfXP2tBCw17qNbBXH8y4PIVu4DylC+Yk=; b=f0VGdNwoLx1JQ/9LAMM8t2gBXDjuxZC2IzG8xsDl8TmQFbdNoz29e2t1jy++9u1FSW bz7QRx6n6KlXBiqMxvjE23atML2lLDBQHbYe/dINJkUDm9glx/e2u7RUJNtiP3iNdbGl FuHAiyQZt5H3BSsJf19KTScNe+JX75w/xnroyuuFdrxqUvtThlzX/ccgtQDwT7HvJ5wM r7J1EzS/mFtbpdI1EVUeVIof+Cj6xrXGgTBr4dgQhKitpe3XTIaj4HPJHyoODL2fWmjS /305QoQh4MxuAexV2bHbLuSMaevXIAmKohWWZBFOy3wfpv6LtwLX2CLKCCLWkN48dmfb YfoA== X-Gm-Message-State: AOAM530dFgA7RTh18TD9vJXDVPLKYPmx1FREFSrwHjbWwZIQYEbWk/dp zQMsPb/DkOcmR06rTuURLOqBOg== X-Google-Smtp-Source: ABdhPJwV7uU0oXOSs+GBb8Le/beFcuoTyG5jHEtbobZSHjJAhyGtEFElIRca3PoA1E/tV1K+/Oy+rA== X-Received: by 2002:a17:906:6c1:: with SMTP id v1mr51856789ejb.638.1641665798545; Sat, 08 Jan 2022 10:16:38 -0800 (PST) Received: from dario-ThinkPad-T14s-Gen-2i.homenet.telecomitalia.it (host-95-244-92-231.retail.telecomitalia.it. [95.244.92.231]) by smtp.gmail.com with ESMTPSA id cm12sm1016616edb.6.2022.01.08.10.16.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 08 Jan 2022 10:16:38 -0800 (PST) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: Dario Binacchi , "David S. Miller" , Jakub Kicinski , Marc Kleine-Budde , Wolfgang Grandegger , linux-can@vger.kernel.org, netdev@vger.kernel.org Subject: [RFC PATCH] can: flexcan: add ethtool support to get rx/tx ring parameters Date: Sat, 8 Jan 2022 19:16:33 +0100 Message-Id: <20220108181633.420433-1-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC Adds ethtool support to get the number of message buffers configured for reception/transmission, which may also depends on runtime configurations such as the 'rx-rtr' flag state. Signed-off-by: Dario Binacchi --- drivers/net/can/flexcan/flexcan-ethtool.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/net/can/flexcan/flexcan-ethtool.c b/drivers/net/can/flexcan/flexcan-ethtool.c index 5bb45653e1ac..d119bca584f6 100644 --- a/drivers/net/can/flexcan/flexcan-ethtool.c +++ b/drivers/net/can/flexcan/flexcan-ethtool.c @@ -80,7 +80,24 @@ static int flexcan_set_priv_flags(struct net_device *ndev, u32 priv_flags) return 0; } +static void flexcan_get_ringparam(struct net_device *ndev, + struct ethtool_ringparam *ring) +{ + struct flexcan_priv *priv = netdev_priv(ndev); + + ring->rx_max_pending = priv->mb_count; + ring->tx_max_pending = priv->mb_count; + + if (priv->devtype_data.quirks & FLEXCAN_QUIRK_USE_RX_MAILBOX) + ring->rx_pending = __sw_hweight64(priv->rx_mask); + else + ring->rx_pending = 6; + + ring->tx_pending = __sw_hweight64(priv->tx_mask); +} + static const struct ethtool_ops flexcan_ethtool_ops = { + .get_ringparam = flexcan_get_ringparam, .get_sset_count = flexcan_get_sset_count, .get_strings = flexcan_get_strings, .get_priv_flags = flexcan_get_priv_flags,