From patchwork Mon Nov 15 03:49:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacky Chou X-Patchwork-Id: 12618663 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B2257C433F5 for ; Mon, 15 Nov 2021 03:50:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8B07B60555 for ; Mon, 15 Nov 2021 03:50:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237118AbhKODxk (ORCPT ); Sun, 14 Nov 2021 22:53:40 -0500 Received: from asix.com.tw ([113.196.140.82]:60850 "EHLO asix.com.tw" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237326AbhKODxY (ORCPT ); Sun, 14 Nov 2021 22:53:24 -0500 Received: from localhost.localdomain (unknown [10.1.2.57]) by asix.com.tw (Postfix) with ESMTPA id 9F6AA1008C143; Mon, 15 Nov 2021 11:50:09 +0800 (CST) From: Jacky Chou To: kuba@kernel.org Cc: davem@davemloft.net, linux-usb@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, louis@asix.com.tw, jackychou@asix.com.tw Subject: [PATCH] net: usb: ax88179_178a: add TSO feature Date: Mon, 15 Nov 2021 11:49:41 +0800 Message-Id: <20211115034941.793347-1-jackychou@asix.com.tw> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org On low-effciency embedded platforms, transmission performance is poor due to on Bulk-out with single packet. Adding TSO feature improves the transmission performance and reduces the number of interrupt caused by Bulk-out complete. Reference to module, net: usb: aqc111. Signed-off-by: Jacky Chou --- drivers/net/usb/ax88179_178a.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/net/usb/ax88179_178a.c b/drivers/net/usb/ax88179_178a.c index c13167183..f78f48d89 100644 --- a/drivers/net/usb/ax88179_178a.c +++ b/drivers/net/usb/ax88179_178a.c @@ -1377,11 +1377,12 @@ static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf) dev->mii.phy_id = 0x03; dev->mii.supports_gmii = 1; - dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | - NETIF_F_RXCSUM; + dev->net->features |= NETIF_F_SG | NETIF_F_IP_CSUM | + NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | NETIF_F_TSO; - dev->net->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | - NETIF_F_RXCSUM; + dev->net->hw_features |= dev->net->features; + + netif_set_gso_max_size(dev->net, 16384); /* Enable checksum offload */ *tmp = AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP | @@ -1526,17 +1527,19 @@ ax88179_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) { u32 tx_hdr1, tx_hdr2; int frame_size = dev->maxpacket; - int mss = skb_shinfo(skb)->gso_size; int headroom; void *ptr; tx_hdr1 = skb->len; - tx_hdr2 = mss; + tx_hdr2 = skb_shinfo(skb)->gso_size; /* Set TSO mss */ if (((skb->len + 8) % frame_size) == 0) tx_hdr2 |= 0x80008000; /* Enable padding */ headroom = skb_headroom(skb) - 8; + if ((dev->net->features & NETIF_F_SG) && skb_linearize(skb)) + return NULL; + if ((skb_header_cloned(skb) || headroom < 0) && pskb_expand_head(skb, headroom < 0 ? 8 : 0, 0, GFP_ATOMIC)) { dev_kfree_skb_any(skb); @@ -1547,6 +1550,8 @@ ax88179_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) put_unaligned_le32(tx_hdr1, ptr); put_unaligned_le32(tx_hdr2, ptr + 4); + usbnet_set_skb_tx_stats(skb, (skb_shinfo(skb)->gso_segs ?: 1), 0); + return skb; }