From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id 106F98052 for ; Mon, 8 Dec 2014 07:22:37 +0100 (CET) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 07 Dec 2014 22:22:36 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.07,536,1413270000"; d="scan'208";a="644062754" Received: from shvmail01.sh.intel.com ([10.239.29.42]) by fmsmga002.fm.intel.com with ESMTP; 07 Dec 2014 22:22:28 -0800 Received: from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com [10.239.29.89]) by shvmail01.sh.intel.com with ESMTP id sB86MQM6019110; Mon, 8 Dec 2014 14:22:26 +0800 Received: from shecgisg004.sh.intel.com (localhost [127.0.0.1]) by shecgisg004.sh.intel.com (8.13.6/8.13.6/SuSE Linux 0.8) with ESMTP id sB86MNCc005084; Mon, 8 Dec 2014 14:22:26 +0800 Received: (from couyang@localhost) by shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id sB86MNMN005080; Mon, 8 Dec 2014 14:22:23 +0800 From: Ouyang Changchun To: dev@dpdk.org Date: Mon, 8 Dec 2014 14:21:50 +0800 Message-Id: <1418019716-4962-12-git-send-email-changchun.ouyang@intel.com> X-Mailer: git-send-email 1.7.12.2 In-Reply-To: <1418019716-4962-1-git-send-email-changchun.ouyang@intel.com> References: <1418019716-4962-1-git-send-email-changchun.ouyang@intel.com> Subject: [dpdk-dev] [RFC PATCH 11/17] virtio: Check for packet headroom at compile time X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Dec 2014 06:22:38 -0000 Better to check at compile time than fail at runtime. Signed-off-by: Changchun Ouyang Signed-off-by: Stephen Hemminger --- lib/librte_pmd_virtio/virtio_ethdev.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/lib/librte_pmd_virtio/virtio_ethdev.c b/lib/librte_pmd_virtio/virtio_ethdev.c index a07f4ca..c17cac8 100644 --- a/lib/librte_pmd_virtio/virtio_ethdev.c +++ b/lib/librte_pmd_virtio/virtio_ethdev.c @@ -882,11 +882,7 @@ eth_virtio_dev_init(__rte_unused struct eth_driver *eth_drv, uint32_t offset_conf = sizeof(config->mac); struct rte_pci_device *pci_dev; - if (RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr)) { - PMD_INIT_LOG(ERR, - "MBUF HEADROOM should be enough to hold virtio net hdr\n"); - return -1; - } + RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr)); eth_dev->dev_ops = &virtio_eth_dev_ops; eth_dev->tx_pkt_burst = &virtio_xmit_pkts; -- 1.8.4.2