From patchwork Thu Nov 7 13:27:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Loftus, Ciara" X-Patchwork-Id: 62660 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 96DE7A034E; Thu, 7 Nov 2019 14:34:10 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id A6B93493D; Thu, 7 Nov 2019 14:34:09 +0100 (CET) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id D07B434F3 for ; Thu, 7 Nov 2019 14:34:08 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 07 Nov 2019 05:34:07 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,278,1569308400"; d="scan'208";a="285994443" Received: from silpixa00393945.ir.intel.com (HELO silpixa00393945.ger.corp.intel.com) ([10.237.223.236]) by orsmga001.jf.intel.com with ESMTP; 07 Nov 2019 05:34:06 -0800 From: Ciara Loftus To: dev@dpdk.org Cc: xiaolong.ye@intel.com, Ciara Loftus Date: Thu, 7 Nov 2019 13:27:10 +0000 Message-Id: <20191107132710.14912-1-ciara.loftus@intel.com> X-Mailer: git-send-email 2.17.1 Subject: [dpdk-dev] [PATCH] net/af_xdp: enforce an MTU of 1500 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" Packets larger than this will fail to be transmitted by AF_XDP, so limit the MTU to 1500. Signed-off-by: Ciara Loftus --- drivers/net/af_xdp/rte_eth_af_xdp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c b/drivers/net/af_xdp/rte_eth_af_xdp.c index 2b1245ee4..62c801500 100644 --- a/drivers/net/af_xdp/rte_eth_af_xdp.c +++ b/drivers/net/af_xdp/rte_eth_af_xdp.c @@ -595,7 +595,7 @@ eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) dev_info->max_tx_queues = internals->queue_cnt; dev_info->min_mtu = RTE_ETHER_MIN_MTU; - dev_info->max_mtu = ETH_AF_XDP_FRAME_SIZE - ETH_AF_XDP_DATA_HEADROOM; + dev_info->max_mtu = 1500; dev_info->default_rxportconf.nb_queues = 1; dev_info->default_txportconf.nb_queues = 1; @@ -1328,6 +1328,8 @@ rte_pmd_af_xdp_probe(struct rte_vdev_device *dev) return -1; } + eth_dev_mtu_set(eth_dev, 1500); + rte_eth_dev_probing_finish(eth_dev); return 0;