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 14D5CA04B3; Tue, 28 Jan 2020 12:27:48 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id E875F1C243; Tue, 28 Jan 2020 12:27:46 +0100 (CET) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id 3C5C21C239 for ; Tue, 28 Jan 2020 12:27:45 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jan 2020 03:27:44 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,373,1574150400"; d="scan'208";a="376415976" Received: from unknown (HELO [10.237.221.61]) ([10.237.221.61]) by orsmga004.jf.intel.com with ESMTP; 28 Jan 2020 03:27:42 -0800 To: "Wei Hu (Xavier)" , dev@dpdk.org References: <20200121114433.57543-1-huwei013@chinasoftinc.com> <20200121114433.57543-2-huwei013@chinasoftinc.com> From: Ferruh Yigit Autocrypt: addr=ferruh.yigit@intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH 1/3] app/testpmd: update Rx offload after setting MTU sccessfully 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" On 1/21/2020 11:44 AM, Wei Hu (Xavier) wrote: > From: "Wei Hu (Xavier)" > > Currently, Rx offload capabilities and max_rx_pkt_len in the struct > variable named rte_port are not updated after setting mtu successfully > in port_mtu_set function by 'port config mtu ' command. > This may lead to reconfig mtu to the initial value in the driver when > recalling rte_eth_dev_configure API interface. > > This patch updates Rx offload capabilities and max_rx_pkt_len after > setting mtu successfully when configuring mtu. > > Fixes: ae03d0d18adf ("app/testpmd: command to configure MTU") > Cc: stable@dpdk.org > > Signed-off-by: Huisong Li > Signed-off-by: Wei Hu (Xavier) > --- > app/test-pmd/config.c | 18 +++++++++++++++++- > 1 file changed, 17 insertions(+), 1 deletion(-) > > diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c > index 9669cbd4c..09a1579f5 100644 > --- a/app/test-pmd/config.c > +++ b/app/test-pmd/config.c > @@ -1216,7 +1216,9 @@ void > port_mtu_set(portid_t port_id, uint16_t mtu) > { > int diag; > + struct rte_port *rte_port = &ports[port_id]; > struct rte_eth_dev_info dev_info; > + uint16_t eth_overhead; > int ret; > > if (port_id_is_invalid(port_id, ENABLED_WARN)) > @@ -1232,8 +1234,22 @@ port_mtu_set(portid_t port_id, uint16_t mtu) > return; > } > diag = rte_eth_dev_set_mtu(port_id, mtu); > - if (diag == 0) > + if (diag == 0) { > + /* > + * Ether overhead in driver is equal to the difference of > + * max_rx_pktlen and max_mtu in rte_eth_dev_info. > + */ > + eth_overhead = dev_info.max_rx_pktlen - dev_info.max_mtu; > + if (mtu > RTE_ETHER_MAX_LEN - eth_overhead) > + rte_port->dev_conf.rxmode.offloads |= > + DEV_RX_OFFLOAD_JUMBO_FRAME; > + else > + rte_port->dev_conf.rxmode.offloads &= > + ~DEV_RX_OFFLOAD_JUMBO_FRAME; If the jumbo frame capability supported or not should be tested before setting it. > + rte_port->dev_conf.rxmode.max_rx_pkt_len = mtu + eth_overhead; May need to check against 'dev_info.max_rx_pktlen', if the 'max_rx_pkt_len' is bigger than this, it will fail in next configure. Also some divers already does this in PMD code, should we clean that code or not is a question.