From patchwork Tue Mar 4 14:21:10 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 14000829 X-Patchwork-Delegate: kuba@kernel.org Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 420E8205ACF for ; Tue, 4 Mar 2025 14:21:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741098099; cv=none; b=tcGHyyKUFVY+iDhDiEsUpCeGqh8KfI/UhFcOFOKNRHEWKyhNZR+fSf/rTOZhrNIDIL/FHdegX1A4zpfYnUIHv0+ItYkUUF/mtz6uF/8JrKtmeUSN2Yp5u2prNNNbvgcem/xhLvCUxj3SFoVPSWL9zEPIYs6rA1EqhFJOCFRl/3c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741098099; c=relaxed/simple; bh=8phL8Z0nowV8iC+G+2BB6CchiuuX38+hPnWOvYuLRO4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=hU4s9PzVq5EJN0zK/mbX0SL+cpD1nFR97ek7W9LAsc9YJ5WGrDKNfMDcCDmTLZveCZqXPZrUyijKArr0hl59zOIKACFP6bXm66yZonq51JzqXxZBeD3RCKondJ2+tjTrNwhfHK7kRVkaLa6WaQ08ZjYyleUAv+wfWEw+3N6lato= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LAUrCuhy; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LAUrCuhy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 61E8EC4CEE5; Tue, 4 Mar 2025 14:21:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741098098; bh=8phL8Z0nowV8iC+G+2BB6CchiuuX38+hPnWOvYuLRO4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=LAUrCuhy9HGxh4EhJuBs74lB+Lok8y8Al1hbL2/QEkc0iJXqEKrzoz8xWuodIrkxk OJXZ0bEcVFRrEm376VIKEXHWNXY1lQ+ZhiSSLBCox6gYcn99aIEB4AJRRmrg3uej3g u93B3wQAyjoexnEROMADpXqHVZ5N8c0kutmbShy45/1ABSeQsP6KoXPWhKEKzXRnMW McZxHNnpdyW22tiSBVHrW7NzlsxdEcGCbjZVdDaSXVYfICTvhME+ge9IJ2nUdfsGw+ ATLY6FcNj7U0dZKHBzTKWfXTIpGXRd9hk9eXgbzntYDZsJMJVuxfKgFSSi9Hc26ok7 ONRr8Bfsi0n0w== From: Lorenzo Bianconi Date: Tue, 04 Mar 2025 15:21:10 +0100 Subject: [PATCH net-next 3/4] net: airoha: Introduce airoha_dev_change_mtu callback Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250304-airoha-eth-rx-sg-v1-3-283ebc61120e@kernel.org> References: <20250304-airoha-eth-rx-sg-v1-0-283ebc61120e@kernel.org> In-Reply-To: <20250304-airoha-eth-rx-sg-v1-0-283ebc61120e@kernel.org> To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, Lorenzo Bianconi X-Mailer: b4 0.14.2 X-Patchwork-Delegate: kuba@kernel.org Add airoha_dev_change_mtu callback to update the MTU of a running device. Signed-off-by: Lorenzo Bianconi --- drivers/net/ethernet/airoha/airoha_eth.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/net/ethernet/airoha/airoha_eth.c b/drivers/net/ethernet/airoha/airoha_eth.c index 54a239ab10aaac4a7bfc52977589415936207962..f3a61879e284a7ea12d0ebde2b993f2247cd35d9 100644 --- a/drivers/net/ethernet/airoha/airoha_eth.c +++ b/drivers/net/ethernet/airoha/airoha_eth.c @@ -1705,6 +1705,20 @@ static void airoha_dev_get_stats64(struct net_device *dev, } while (u64_stats_fetch_retry(&port->stats.syncp, start)); } +static int airoha_dev_change_mtu(struct net_device *dev, int mtu) +{ + struct airoha_gdm_port *port = netdev_priv(dev); + struct airoha_eth *eth = port->qdma->eth; + u32 len = ETH_HLEN + mtu + ETH_FCS_LEN; + + airoha_fe_rmw(eth, REG_GDM_LEN_CFG(port->id), + GDM_LONG_LEN_MASK, + FIELD_PREP(GDM_LONG_LEN_MASK, len)); + WRITE_ONCE(dev->mtu, mtu); + + return 0; +} + static u16 airoha_dev_select_queue(struct net_device *dev, struct sk_buff *skb, struct net_device *sb_dev) { @@ -2400,6 +2414,7 @@ static const struct net_device_ops airoha_netdev_ops = { .ndo_init = airoha_dev_init, .ndo_open = airoha_dev_open, .ndo_stop = airoha_dev_stop, + .ndo_change_mtu = airoha_dev_change_mtu, .ndo_select_queue = airoha_dev_select_queue, .ndo_start_xmit = airoha_dev_xmit, .ndo_get_stats64 = airoha_dev_get_stats64,