netdev - [PATCH V6] ixgbe: synchronize link_up and link

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Date:	Thu, 31 Dec 2015 15:11:38 +0800
From:	<zyjzyj2000@...il.com>
To:	<jeffrey.t.kirsher@...el.com>, <jesse.brandeburg@...el.com>,
	<shannon.nelson@...el.com>, <carolyn.wyborny@...el.com>,
	<donald.c.skidmore@...el.com>, <bruce.w.allan@...el.com>,
	<john.ronciak@...el.com>, <mitch.a.williams@...el.com>,
	<intel-wired-lan@...ts.osuosl.org>, <netdev@...r.kernel.org>,
	<e1000-devel@...ts.sourceforge.net>, <mark.d.rustad@...el.com>
CC:	<venkat.viswanathan@...driver.com>,
	<Boris.Shteinbock@...driver.com>, <Vincent.Bourg@...driver.com>
Subject: [PATCH V6] ixgbe: synchronize link_up and link_speed of a slave


Hi, all

Thanks for the reply from Jeff.

V2: Based on feedback from Jeff Kirsher, it is not appropriate to continue
    in the function ixgbe_watchdog_link_is_up without link_speed since this will
    make some virtual NICs not work well.

V3: Based on feedback from Emil Tantilov, the time span between link_up 
    and link_speed is not important when the X540 NIC acts as an independent 
    interface. 

V4: According to Rustad, Mark D, maybe it is related with copper phy. To make
    fiber phy more robust, synchronize both the link_up and link_speed of a slave
    interface in ixgbe driver.

V5: Based on feedback from Rustad, Mark D, simplify code comment and if statement 
    to only test for IFF_SLAVE flag and unknown link speed.

V6: Based on feedback from Jeff Kirsher, the patch format is adjusted 
    and change log of this patch are added.

Best Regards!
Zhu Yanjun
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