From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 4E3ECA04C7; Wed, 16 Sep 2020 07:57:46 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 2B51F1C1BA; Wed, 16 Sep 2020 07:57:42 +0200 (CEST) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by dpdk.org (Postfix) with ESMTP id 8D5FF1C1A2 for ; Wed, 16 Sep 2020 07:57:39 +0200 (CEST) IronPort-SDR: ADgCNrPlNo/DwIAFoyhjiVB/zQnRr2AeHT1wOBcfHVv/uqZ/T8kV+XyKZxkOqdjT2F3CYfkloH hTej47fK94nQ== X-IronPort-AV: E=McAfee;i="6000,8403,9745"; a="223592000" X-IronPort-AV: E=Sophos;i="5.76,431,1592895600"; d="scan'208";a="223592000" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Sep 2020 22:57:39 -0700 IronPort-SDR: iHggVmsmTlBct8M0msLY2qsm6F9BaPJe/+ARbDimTovLdcTJ8tbLipU8+WTySaOvuIEdIJ/ovC NDrOo0TJaOiw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.76,431,1592895600"; d="scan'208";a="319722694" Received: from intel-npg-odc-srv01.cd.intel.com ([10.240.178.136]) by orsmga002.jf.intel.com with ESMTP; 15 Sep 2020 22:57:36 -0700 From: SteveX Yang To: dev@dpdk.org Cc: wei.zhao1@intel.com, jia.guo@intel.com, qiming.yang@intel.com, qi.z.zhang@intel.com, jingjing.wu@intel.com, beilei.xing@intel.com, SteveX Yang Date: Wed, 16 Sep 2020 05:52:08 +0000 Message-Id: <20200916055212.25019-2-stevex.yang@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200916055212.25019-1-stevex.yang@intel.com> References: <20200916055212.25019-1-stevex.yang@intel.com> Subject: [dpdk-dev] [PATCH v1 1/5] net/e1000: fix max mtu size packets with vlan tag cannot be received by default X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" testpmd will initialize default max packet length to 1518 which does't include vlan tag size in ether overheader. Once, send the max mtu length packet with vlan tag, the max packet length will exceed 1518 that will cause packets dropped directly from NIC hw side. e1000 can support single vlan tags that need more 4 bytes for max packet size, so, configures the correct max packet size in dev_config ops. Fixes: 35b2d13fd6fd ("net: add rte prefix to ether defines") Signed-off-by: SteveX Yang --- drivers/net/e1000/em_ethdev.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/net/e1000/em_ethdev.c b/drivers/net/e1000/em_ethdev.c index 902b1cdca..68ff892be 100644 --- a/drivers/net/e1000/em_ethdev.c +++ b/drivers/net/e1000/em_ethdev.c @@ -437,10 +437,21 @@ eth_em_configure(struct rte_eth_dev *dev) { struct e1000_interrupt *intr = E1000_DEV_PRIVATE_TO_INTR(dev->data->dev_private); + struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; PMD_INIT_FUNC_TRACE(); intr->flags |= E1000_FLAG_NEED_LINK_UPDATE; + /** + * Considering vlan tag packet, max frame size should be MTU and + * corresponding ether overhead. + */ + if (dev->data->mtu == RTE_ETHER_MTU && + rxmode->max_rx_pkt_len == RTE_ETHER_MAX_LEN) { + rxmode->max_rx_pkt_len = RTE_ETHER_MTU + E1000_ETH_OVERHEAD; + rxmode->offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME; + } + PMD_INIT_FUNC_TRACE(); return 0; -- 2.17.1