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 95BE6A0561; Thu, 27 Feb 2020 18:03:21 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id DA31F2C02; Thu, 27 Feb 2020 18:03:20 +0100 (CET) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by dpdk.org (Postfix) with ESMTP id 97B001C01 for ; Thu, 27 Feb 2020 18:03:19 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 27 Feb 2020 09:03:18 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,492,1574150400"; d="scan'208";a="285385999" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.20]) ([10.237.221.20]) by FMSMGA003.fm.intel.com with ESMTP; 27 Feb 2020 09:03:17 -0800 To: "Wei Hu (Xavier)" , dev@dpdk.org References: <20200225092903.38455-1-huwei013@chinasoftinc.com> <20200225092903.38455-2-huwei013@chinasoftinc.com> Cc: Chas Williams 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 1/2] net/bonding: fix MAC address when switching active port 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 2/25/2020 9:29 AM, Wei Hu (Xavier) wrote: > From: "Wei Hu (Xavier)" > > Currently, based on a active-backup bond device, when the link status of > the primary port changes from up to down, one slave port changes to the > primary port, but the new primary port's MAC address cannot change to the > bond device's MAC address. And we can't continue receive packets whose > destination MAC addresses are the same as the bond devices's MAC address. > > The current bonding PMD driver call mac_address_slaves_update function to > modify the MAC address of all slaves devices: the primary port using bond > device's MAC address, and other slaves devices using the respective MAC > address. We found that one error using primary_port instead of > current_primary_port in mac_address_slaves_update function. > > On the other hand, The current bonding PMD driver sets slave devices's MAC > address according to the variable named current_primary_port. The variable > named current_primary_port changes in the following scenario: > 1. Add the slave devices to bond, the first slave port will be regardes as > the current_primary_port. If changing the order of adding the slave > devices, the value of the variable named current_primary_port will be > different. > 2. The upper application specifies primary_port via calling the > rte_eth_bond_primary_set API function. > 3. Delete the primary slave device. > 4. The link status of the primary port changes from up to down. > > We have tested the above 4 cases and found that there are problems that > the new primary port's MAC address didn't change to the bond device's MAC > address when running case 3 and 4. When current_primary_port changes, the > new primary port's MAC address should change at the same time. We also need > to call mac_address_slaves_update function to update MAC addresses in case > 3 and 4. > > For more details please refer to: > https://bugs.dpdk.org/show_bug.cgi?id=256 > > Bugzilla ID: 256 > Fixes: 2efb58cbab6e ("bond: new link bonding library") > Cc: stable@dpdk.org > > Reported-by: Chunsong Feng > Signed-off-by: Chunsong Feng > Signed-off-by: Wei Hu (Xavier) Please cc the maintainer on the patches. cc'ed Chas for this one. I am using './devtools/get-maintainer.sh' script, once you set it up, it helps a lot.