From patchwork Wed Sep 27 09:41:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Marchand X-Patchwork-Id: 131991 X-Patchwork-Delegate: qi.z.zhang@intel.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 5F76642651; Wed, 27 Sep 2023 11:42:26 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id C0A3840A6C; Wed, 27 Sep 2023 11:42:17 +0200 (CEST) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by mails.dpdk.org (Postfix) with ESMTP id 10535409FA for ; Wed, 27 Sep 2023 11:42:16 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1695807736; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wCyb1mvyfTmJgjIKiiU1V2o7tbE0uxsAYss4KcLKZK0=; b=AWkpiB8WBAO2bIuVh7KwvTV66qLdCuES3wDBuCjpQYF+Ll1hOVvbePVLYivPB4lW8emDoF D7X9MYc0TjCu+lH102qKkYFw2mCkGyjxWNno4aJVdu3bHJbaHld/M5A01ezKFhXXzccgt1 qmgOP29gJVcjEzVU8OHuOZUsrLiMxms= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-32-HR69K3gMM_CVode0CpUIfw-1; Wed, 27 Sep 2023 05:42:11 -0400 X-MC-Unique: HR69K3gMM_CVode0CpUIfw-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 989A6185A797; Wed, 27 Sep 2023 09:42:10 +0000 (UTC) Received: from dmarchan.redhat.com (unknown [10.45.224.48]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8E1D514171B6; Wed, 27 Sep 2023 09:42:09 +0000 (UTC) From: David Marchand To: dev@dpdk.org Cc: stable@dpdk.org, Qiming Yang , Qi Zhang , Kevin Liu Subject: [PATCH v2 4/4] net/ice: fix TSO with big segments Date: Wed, 27 Sep 2023 11:41:48 +0200 Message-ID: <20230927094148.1129330-4-david.marchand@redhat.com> In-Reply-To: <20230927094148.1129330-1-david.marchand@redhat.com> References: <20230919140430.3251493-1-david.marchand@redhat.com> <20230927094148.1129330-1-david.marchand@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Packets to be segmented with TSO are usually larger than MTU. Plus, a single segment for the whole packet may be used: in OVS case, an external rte_malloc'd buffer is used for packets received from vhost-user ports. Before this fix, TSO packets were dropped by net/ice with the following message: 2023-09-18T13:34:31.064Z|00020|dpdk(pmd-c31/id:22)|ERR|ice_prep_pkts(): INVALID mbuf: bad data_len=[2962] Remove the check on data_len. Fixes: ccf33dccf7aa ("net/ice: check illegal packet sizes") Cc: stable@dpdk.org Signed-off-by: David Marchand --- Note: I am still waiting for feedback and there may be some followup patch later wrt ice_prep_pkts. For context, see: http://inbox.dpdk.org/dev/CAJFAV8yOa3ShkVdEXHfnmOEmUTwV3e75Bu9U3OqpNc5usTt3Rw@mail.gmail.com/T/#u Changes since v1: - moved log removal in a separate patch, --- drivers/net/ice/ice_rxtx.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c index d5513e9e93..ee9cb7b955 100644 --- a/drivers/net/ice/ice_rxtx.c +++ b/drivers/net/ice/ice_rxtx.c @@ -3685,9 +3685,6 @@ ice_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts, int i, ret; uint64_t ol_flags; struct rte_mbuf *m; - struct ice_tx_queue *txq = tx_queue; - struct rte_eth_dev *dev = &rte_eth_devices[txq->port_id]; - uint16_t max_frame_size = dev->data->mtu + ICE_ETH_OVERHEAD; for (i = 0; i < nb_pkts; i++) { m = tx_pkts[i]; @@ -3704,9 +3701,7 @@ ice_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts, return i; } - /* check the data_len in mbuf */ - if (m->data_len < ICE_TX_MIN_PKT_LEN || - m->data_len > max_frame_size) { + if (m->pkt_len < ICE_TX_MIN_PKT_LEN) { rte_errno = EINVAL; return i; }