Hi Bruce, > -----Original Message----- > From: Richardson, Bruce > Sent: Wednesday, February 24, 2016 10:27 PM > To: Lu, Wenzhuo > Cc: dev at dpdk.org > Subject: Re: [dpdk-dev] [PATCH v2] ixgbe: fix link down issue on x550em_x > > On Mon, Feb 01, 2016 at 04:42:39PM +0800, Wenzhuo Lu wrote: > > Normally the auto-negotiation is supported by FW. But on > > X550EM_X_10G_T it's not supported by FW. As the port of X550EM_X_10G_T > > is 10G. If we connect the port with a peer which is 1G. The link is > > always down. > > We have to supprted auto-neg by SW to avoid such link down issue. > > > > Signed-off-by: Wenzhuo Lu <wenzhuo.lu at intel.com> > > --- > > doc/guides/rel_notes/release_2_3.rst | 6 ++++++ > > drivers/net/ixgbe/ixgbe_ethdev.c | 38 > ++++++++++++++++++++++++++++++++++++ > > drivers/net/ixgbe/ixgbe_ethdev.h | 1 + > > 3 files changed, 45 insertions(+) > > > > diff --git a/doc/guides/rel_notes/release_2_3.rst > > b/doc/guides/rel_notes/release_2_3.rst > > index 99de186..a8d34d1 100644 > > --- a/doc/guides/rel_notes/release_2_3.rst > > +++ b/doc/guides/rel_notes/release_2_3.rst > > @@ -15,6 +15,12 @@ EAL > > Drivers > > ~~~~~~~ > > > > +* **ixgbe: fix link down issue on X550EM_X.** > > + Normally the auto-negotiation is supported by FW. SW need not care > > +about > > + that. But on x550em_x, FW doesn't support auto-neg. As the ports of > > +x550em_x > > + are 10G, if we connect the port will a peer which is 1G, the link > > +will always > > + be donw on x550em_x. > > + We will support auto-neg by SW to avoid this link down issue. > > > > Couple of typos present in the text above. Sorry for that. I'll correct them. Thanks.
> > /Bruce
