From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gavin Lambert Date: Tue, 20 Aug 2019 14:15:02 +1200 Subject: [Intel-wired-lan] [e1000e] Linux 4.9: unable to send packets after link recovery with patched driver In-Reply-To: References: <3acf459ddbbd30687cda0a79523afe04@mirality.co.nz> <000661bda5687541e895a949c76712fb@mirality.co.nz> <3a63201c552a9cb6a9737fec92bc1264@mirality.co.nz> Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: On 2019-07-19 13:02, I wrote: > On 2019-07-19 12:40, I wrote: >> FWIW, I added some extra logging around the new code. I can confirm >> that it does execute on link regain but doesn't actually enter the >> loop in my problem case. The pcim_state is 0x00080083 at the time. >> So the e1000_phy_hw_reset is never actually called. If I try changing >> it to call that unconditionally, then it can't successfully establish >> a link in the first place. > > I added a call to e1000e_dump at the point of link regain, in hopes > that it might shed more light. [register dumps clipped] Does anyone have any ideas about this? Either towards further investigation or to a possible resolution? This is at the point of hardware internals now, so I have no idea how to proceed in either area.