netdev - RE: [PATCH v8 net-next] net: hyperv: dump TX indirection table to ethtool regs

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Date:   Fri, 24 Jul 2020 15:28:34 +0000
From:   Haiyang Zhang <haiyangz@...rosoft.com>
To:     Chi Song <chisong@...ux.microsoft.com>,
        KY Srinivasan <kys@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Wei Liu <wei.liu@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
CC:     "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v8 net-next] net: hyperv: dump TX indirection table to
 ethtool regs



> -----Original Message-----
> From: Chi Song <chisong@...ux.microsoft.com>
> Sent: Friday, July 24, 2020 12:14 AM
> To: KY Srinivasan <kys@...rosoft.com>; Haiyang Zhang
> <haiyangz@...rosoft.com>; Stephen Hemminger <sthemmin@...rosoft.com>;
> Wei Liu <wei.liu@...nel.org>; David S. Miller <davem@...emloft.net>; Jakub
> Kicinski <kuba@...nel.org>
> Cc: linux-hyperv@...r.kernel.org; netdev@...r.kernel.org; linux-
> kernel@...r.kernel.org
> Subject: [PATCH v8 net-next] net: hyperv: dump TX indirection table to ethtool
> regs
> 
> An imbalanced TX indirection table causes netvsc to have low
> performance. This table is created and managed during runtime. To help
> better diagnose performance issues caused by imbalanced tables, it needs
> make TX indirection tables visible.
> 
> Because TX indirection table is driver specified information, so
> display it via ethtool register dump.
> 
> Signed-off-by: Chi Song <chisong@...rosoft.com>

Reviewed-by: Haiyang Zhang <haiyangz@...rosoft.com>