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 3A91DA0569; Wed, 11 Mar 2020 13:05:18 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id E61BE1C00D; Wed, 11 Mar 2020 13:05:17 +0100 (CET) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id 674CB2BAA; Wed, 11 Mar 2020 13:05:15 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Mar 2020 05:05:13 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,540,1574150400"; d="scan'208";a="277350642" Received: from silpixa00389033.ir.intel.com (HELO silpixa00389033.ger.corp.intel.com) ([10.237.223.171]) by fmsmga002.fm.intel.com with ESMTP; 11 Mar 2020 05:05:12 -0700 From: Louise Kilheeney To: dev@dpdk.org Cc: Louise Kilheeney , stable@dpdk.org Date: Wed, 11 Mar 2020 12:04:56 +0000 Message-Id: <20200311120456.36510-1-louise.kilheeney@intel.com> X-Mailer: git-send-email 2.17.1 Subject: [dpdk-dev] [PATCH] examples/l2fwd-keepalive: fix packet drops limited mbufs 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" MBUF pool of size 8192 was causing packet loss when using four ports. To fix this issue this patch specifies the number of MBUF's per port instead of having one set MBUF pool size, this way it will adapt to any number of ports. Fixes: e64833f2273a ("examples/l2fwd-keepalive: add sample application") Cc: stable@dpdk.org Signed-off-by: Louise Kilheeney --- examples/l2fwd-keepalive/main.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/examples/l2fwd-keepalive/main.c b/examples/l2fwd-keepalive/main.c index b36834974..0f0010d51 100644 --- a/examples/l2fwd-keepalive/main.c +++ b/examples/l2fwd-keepalive/main.c @@ -44,7 +44,7 @@ #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1 -#define NB_MBUF 8192 +#define NB_MBUF_PER_PORT 3000 #define MAX_PKT_BURST 32 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */ @@ -561,16 +561,19 @@ main(int argc, char **argv) if (ret < 0) rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n"); - /* create the mbuf pool */ - l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32, - 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); - if (l2fwd_pktmbuf_pool == NULL) - rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n"); - nb_ports = rte_eth_dev_count_avail(); if (nb_ports == 0) rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n"); + /* create the mbuf pool */ + unsigned int total_nb_mbufs = NB_MBUF_PER_PORT * nb_ports; + + l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", + total_nb_mbufs, 32, 0, RTE_MBUF_DEFAULT_BUF_SIZE, + rte_socket_id()); + if (l2fwd_pktmbuf_pool == NULL) + rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n"); + /* reset l2fwd_dst_ports */ for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) l2fwd_dst_ports[portid] = 0; -- 2.17.1