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 Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 027CAC04A95 for ; Wed, 28 Sep 2022 19:38:27 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 1A01784BA7; Wed, 28 Sep 2022 21:37:56 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=gateworks.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id A2DE984BEF; Wed, 28 Sep 2022 21:37:44 +0200 (CEST) Received: from finn.localdomain (finn.gateworks.com [108.161.129.64]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 884E084BEF for ; Wed, 28 Sep 2022 21:37:40 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=gateworks.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=tharvey@gateworks.com Received: from 068-189-091-139.biz.spectrum.com ([68.189.91.139] helo=tharvey.pdc.gateworks.com) by finn.localdomain with esmtp (Exim 4.93) (envelope-from ) id 1odcsD-00H2nI-Ri; Wed, 28 Sep 2022 19:37:37 +0000 From: Tim Harvey To: u-boot@lists.denx.de, Joe Hershberger , Ramon Fried , Vladimir Oltean , Stefano Babic , Fabio Estevam , "NXP i . MX U-Boot Team" , =?UTF-8?q?Marek=20Beh=C3=BAn?= Cc: Tim Harvey Subject: [PATCH v4 4/8] net: dsa: allow rcv() and xmit() to be optional Date: Wed, 28 Sep 2022 12:37:28 -0700 Message-Id: <20220928193732.998665-5-tharvey@gateworks.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220928193732.998665-1-tharvey@gateworks.com> References: <20220928193732.998665-1-tharvey@gateworks.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.6 at phobos.denx.de X-Virus-Status: Clean Allow rcv() and xmit() dsa driver ops to be optional in case a driver does not care to mangle a packet as in U-Boot only one network port is enabled at a time and thus no packet mangling is necessary. Suggested-by: Vladimir Oltean Signed-off-by: Tim Harvey Reviewed-by: Vladimir Oltean --- v4: - no changes v3: - added Vladimir's rb tag v2: new patch --- net/dsa-uclass.c | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) diff --git a/net/dsa-uclass.c b/net/dsa-uclass.c index cb21de17432b..9d63cde6b154 100644 --- a/net/dsa-uclass.c +++ b/net/dsa-uclass.c @@ -131,16 +131,14 @@ static void dsa_port_stop(struct udevice *pdev) * We copy the frame to a stack buffer where we have reserved headroom and * tailroom space. Headroom and tailroom are set to 0. */ -static int dsa_port_send(struct udevice *pdev, void *packet, int length) +static int dsa_port_mangle_packet(struct udevice *pdev, void *packet, int length) { + struct dsa_port_pdata *port_pdata = dev_get_parent_plat(pdev); struct udevice *dev = dev_get_parent(pdev); struct dsa_priv *priv = dev_get_uclass_priv(dev); int head = priv->headroom, tail = priv->tailroom; - struct udevice *master = dsa_get_master(dev); struct dsa_ops *ops = dsa_get_ops(dev); uchar dsa_packet_tmp[PKTSIZE_ALIGN]; - struct dsa_port_pdata *port_pdata; - int err; if (length + head + tail > PKTSIZE_ALIGN) return -EINVAL; @@ -152,10 +150,21 @@ static int dsa_port_send(struct udevice *pdev, void *packet, int length) /* copy back to preserve original buffer alignment */ memcpy(packet, dsa_packet_tmp, length); - port_pdata = dev_get_parent_plat(pdev); - err = ops->xmit(dev, port_pdata->index, packet, length); - if (err) - return err; + return ops->xmit(dev, port_pdata->index, packet, length); +} + +static int dsa_port_send(struct udevice *pdev, void *packet, int length) +{ + struct udevice *dev = dev_get_parent(pdev); + struct udevice *master = dsa_get_master(dev); + struct dsa_ops *ops = dsa_get_ops(dev); + int err; + + if (ops->xmit) { + err = dsa_port_mangle_packet(pdev, packet, length); + if (err) + return err; + } return eth_get_ops(master)->send(master, packet, length); } @@ -172,7 +181,7 @@ static int dsa_port_recv(struct udevice *pdev, int flags, uchar **packetp) int length, port_index, err; length = eth_get_ops(master)->recv(master, flags, packetp); - if (length <= 0) + if (length <= 0 || !ops->rcv) return length; /* -- 2.25.1