From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ferruh Yigit Subject: Re: [PATCH] net/enic: fix packet loss after MTU change Date: Mon, 23 Oct 2017 14:36:21 -0700 Message-ID: <901823f6-5693-8f1c-0904-a007c8dbcaa2@intel.com> References: <20171023202300.4944-1-johndale@cisco.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Cc: dev@dpdk.org, stable@dpdk.org To: John Daley Return-path: In-Reply-To: <20171023202300.4944-1-johndale@cisco.com> Content-Language: en-US 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 10/23/2017 1:23 PM, John Daley wrote: > If multiple Rx queues and Rx Scatter are used and the MTU is > modified so that the number of mbufs per packet changes, packet > loss is possible. > > The enic completion queue index was miscalculated leaving the > upper half of the queues uninitialized after an MTU change, possibly > leading to completions on those queues not getting processed. > > Fixes: c3e09182bcd6 ("net/enic: support scatter Rx in MTU update") > Cc: stable@dpdk.org > > Signed-off-by: John Daley Applied to dpdk-next-net/master, thanks.