From patchwork Fri Mar 16 18:09:06 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Nelson X-Patchwork-Id: 887088 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=oracle.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=oracle.com header.i=@oracle.com header.b="nNxjphfT"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 402tm450RJz9sSK for ; Sat, 17 Mar 2018 05:10:12 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753050AbeCPSKK (ORCPT ); Fri, 16 Mar 2018 14:10:10 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:43396 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751445AbeCPSKJ (ORCPT ); Fri, 16 Mar 2018 14:10:09 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w2GHfV2T015530; Fri, 16 Mar 2018 18:09:17 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2017-10-26; bh=PvI25boyxARNiomlD1ZYdGh2KFxQOqWEnNIsAf4wizc=; b=nNxjphfTkFlVCa2/noZh4T2z7UH3p5Y5Sf/8QyfEE+/kCP8GwHTGWY2NYMf+wuUJkeja gzoY8beb2y1hHNZCh6wpzKj6QyBkf3WcKOPan0ic8N98Y6pgK2shI/OC7UIo70gtFSQA fJ3qnHGkW7PnQmO8FHzIAettPH2w7+NZwCWQcdjw7s4caBVCbFVsjyxnZY15E7IkP7tm n/cN706RnTh2t+tzNIPG7X1k1erhIty4UfdRZHBU4vYIQh7m0ecagLD3DGF80MgxO3NO iu/flldIKgXrm7jCUduKCOZWgix6l2s71M8kI/MTW8n7CKpI2XtkfXRaMye1BHalEMdi 8w== Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by userp2120.oracle.com with ESMTP id 2grjj003r2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 16 Mar 2018 18:09:17 +0000 Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userv0022.oracle.com (8.14.4/8.14.4) with ESMTP id w2GI9GHA019509 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 16 Mar 2018 18:09:16 GMT Received: from abhmp0009.oracle.com (abhmp0009.oracle.com [141.146.116.15]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id w2GI9Gxr013637; Fri, 16 Mar 2018 18:09:16 GMT Received: from slnelson-mint18.us.oracle.com (/10.159.151.146) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 16 Mar 2018 11:09:16 -0700 From: Shannon Nelson To: intel-wired-lan@lists.osuosl.org Cc: netdev@vger.kernel.org, steffen.klassert@secunet.com Subject: [next-queue v2 3/4] ixgbe: no need for esp trailer if gso Date: Fri, 16 Mar 2018 11:09:06 -0700 Message-Id: <1521223747-12018-4-git-send-email-shannon.nelson@oracle.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1521223747-12018-1-git-send-email-shannon.nelson@oracle.com> References: <1521223747-12018-1-git-send-email-shannon.nelson@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8833 signatures=668690 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1803160153 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org There is no need to calculate the trailer length if we're doing a GSO/TSO, as there is no trailer added to the packet data. Also, don't bother clearing the flags field as it was already cleared earlier. Signed-off-by: Shannon Nelson --- drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c | 37 +++++++++++++++----------- 1 file changed, 21 insertions(+), 16 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c index f225452..5ddea43 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c @@ -774,11 +774,7 @@ int ixgbe_ipsec_tx(struct ixgbe_ring *tx_ring, first->tx_flags |= IXGBE_TX_FLAGS_IPSEC | IXGBE_TX_FLAGS_CC; - itd->flags = 0; if (xs->id.proto == IPPROTO_ESP) { - struct sk_buff *skb = first->skb; - int ret, authlen, trailerlen; - u8 padlen; itd->flags |= IXGBE_ADVTXD_TUCMD_IPSEC_TYPE_ESP | IXGBE_ADVTXD_TUCMD_L4T_TCP; @@ -790,19 +786,28 @@ int ixgbe_ipsec_tx(struct ixgbe_ring *tx_ring, * padlen bytes of padding. This ends up not the same * as the static value found in xs->props.trailer_len (21). * - * The "correct" way to get the auth length would be to use - * authlen = crypto_aead_authsize(xs->data); - * but since we know we only have one size to worry about - * we can let the compiler use the constant and save us a - * few CPU cycles. + * ... but if we're doing GSO, don't bother as the stack + * doesn't add a trailer for those. */ - authlen = IXGBE_IPSEC_AUTH_BITS / 8; - - ret = skb_copy_bits(skb, skb->len - (authlen + 2), &padlen, 1); - if (unlikely(ret)) - return 0; - trailerlen = authlen + 2 + padlen; - itd->trailer_len = trailerlen; + if (!skb_is_gso(first->skb)) { + /* The "correct" way to get the auth length would be + * to use + * authlen = crypto_aead_authsize(xs->data); + * but since we know we only have one size to worry + * about * we can let the compiler use the constant + * and save us a few CPU cycles. + */ + const int authlen = IXGBE_IPSEC_AUTH_BITS / 8; + struct sk_buff *skb = first->skb; + u8 padlen; + int ret; + + ret = skb_copy_bits(skb, skb->len - (authlen + 2), + &padlen, 1); + if (unlikely(ret)) + return 0; + itd->trailer_len = authlen + 2 + padlen; + } } if (tsa->encrypt) itd->flags |= IXGBE_ADVTXD_TUCMD_IPSEC_ENCRYPT_EN;