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Date: Thu, 30 Apr 2020 21:02:30 -0700 (PDT) From: David Miller <davem@...emloft.net> To: rahul.lakkireddy@...lsio.com Cc: netdev@...r.kernel.org, nirranjan@...lsio.com, vishal@...lsio.com, dt@...lsio.com Subject: Re: [PATCH net] cxgb4: fix EOTID leak when disabling TC-MQPRIO offload From: Rahul Lakkireddy <rahul.lakkireddy@...lsio.com> Date: Thu, 30 Apr 2020 00:22:19 +0530 > Under heavy load, the EOTID termination FLOWC request fails to get > enqueued to the end of the Tx ring due to lack of credits. This > results in EOTID leak. > > When disabling TC-MQPRIO offload, the link is already brought down > to cleanup EOTIDs. So, flush any pending enqueued skbs that can't be > sent outside the wire, to make room for FLOWC request. Also, move the > FLOWC descriptor consumption logic closer to when the FLOWC request is > actually posted to hardware. > > Fixes: 0e395b3cb1fb ("cxgb4: add FLOWC based QoS offload") > Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@...lsio.com> Applied and queued up for -stable, thanks.
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