From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by dpdk.space (Postfix) with ESMTP id 8052BA00E6 for ; Fri, 22 Mar 2019 03:08:34 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id B8B201B55D; Fri, 22 Mar 2019 03:08:33 +0100 (CET) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by dpdk.org (Postfix) with ESMTP id 7F4701B55A for ; Fri, 22 Mar 2019 03:08:32 +0100 (CET) X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 21 Mar 2019 19:08:31 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,255,1549958400"; d="scan'208";a="154617601" Received: from yexl-server.sh.intel.com (HELO localhost) ([10.67.110.206]) by fmsmga004.fm.intel.com with ESMTP; 21 Mar 2019 19:08:30 -0700 Date: Fri, 22 Mar 2019 10:04:26 +0800 From: Ye Xiaolong To: Stephen Hemminger Cc: dev@dpdk.org, Qi Zhang , Karlsson Magnus , Topel Bjorn Message-ID: <20190322020426.GE84243@intel.com> References: <20190301080947.91086-1-xiaolong.ye@intel.com> <20190321091845.78495-1-xiaolong.ye@intel.com> <20190321091845.78495-2-xiaolong.ye@intel.com> <20190321082705.1ee71f1f@shemminger-XPS-13-9360> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline In-Reply-To: <20190321082705.1ee71f1f@shemminger-XPS-13-9360> User-Agent: Mutt/1.9.4 (2018-02-28) Subject: Re: [dpdk-dev] [PATCH v3 1/5] net/af_xdp: introduce AF XDP PMD driver 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" Message-ID: <20190322020426.k_2usmoIdSSKTOJeNNW60hKQTi2swtDQEmfgxIpzR6o@z> On 03/21, Stephen Hemminger wrote: >On Thu, 21 Mar 2019 17:18:41 +0800 >Xiaolong Ye wrote: > >> static void kick_tx(struct pkt_tx_queue *txq) >> +{ >> + struct xsk_umem_info *umem = txq->pair->umem; >> + >> + while (send(xsk_socket__fd(txq->pair->xsk), NULL, >> + 0, MSG_DONTWAIT) < 0) { >> + /* some thing unexpected */ >> + if (errno != EBUSY && errno != EAGAIN) >> + break; >> + >> + /* pull from complete qeueu to leave more space */ >> + if (errno == EAGAIN) >> + pull_umem_cq(umem, ETH_AF_XDP_TX_BATCH_SIZE); >> + } > >What about EINTR?? >You should retry the send then. Will do.