linux-kernel - RE: [PATCH net-next v3 2/2] net: mana: Add standard counter rx_missed

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Message-ID:
 <SA3PR21MB3867743127EB14750197FF11CAC8A@SA3PR21MB3867.namprd21.prod.outlook.com>
Date: Sun, 16 Nov 2025 21:50:43 +0000
From: Haiyang Zhang <haiyangz@...rosoft.com>
To: Erni Sri Satya Vennela <ernis@...ux.microsoft.com>, KY Srinivasan
	<kys@...rosoft.com>, "wei.liu@...nel.org" <wei.liu@...nel.org>, Dexuan Cui
	<DECUI@...rosoft.com>, "andrew+netdev@...n.ch" <andrew+netdev@...n.ch>,
	"davem@...emloft.net" <davem@...emloft.net>, "edumazet@...gle.com"
	<edumazet@...gle.com>, "kuba@...nel.org" <kuba@...nel.org>,
	"pabeni@...hat.com" <pabeni@...hat.com>, Long Li <longli@...rosoft.com>,
	Konstantin Taranov <kotaranov@...rosoft.com>, "horms@...nel.org"
	<horms@...nel.org>, "shradhagupta@...ux.microsoft.com"
	<shradhagupta@...ux.microsoft.com>, "ssengar@...ux.microsoft.com"
	<ssengar@...ux.microsoft.com>, "dipayanroy@...ux.microsoft.com"
	<dipayanroy@...ux.microsoft.com>, Shiraz Saleem <shirazsaleem@...rosoft.com>,
	"sbhatta@...vell.com" <sbhatta@...vell.com>, "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>, "linux-rdma@...r.kernel.org"
	<linux-rdma@...r.kernel.org>
Subject: RE: [PATCH net-next v3 2/2] net: mana: Add standard counter
 rx_missed_errors



> -----Original Message-----
> From: Erni Sri Satya Vennela <ernis@...ux.microsoft.com>
> Sent: Friday, November 14, 2025 6:43 AM
> To: KY Srinivasan <kys@...rosoft.com>; Haiyang Zhang
> <haiyangz@...rosoft.com>; wei.liu@...nel.org; Dexuan Cui
> <DECUI@...rosoft.com>; andrew+netdev@...n.ch; davem@...emloft.net;
> edumazet@...gle.com; kuba@...nel.org; pabeni@...hat.com; Long Li
> <longli@...rosoft.com>; Konstantin Taranov <kotaranov@...rosoft.com>;
> horms@...nel.org; shradhagupta@...ux.microsoft.com;
> ssengar@...ux.microsoft.com; ernis@...ux.microsoft.com;
> dipayanroy@...ux.microsoft.com; Shiraz Saleem
> <shirazsaleem@...rosoft.com>; sbhatta@...vell.com; linux-
> hyperv@...r.kernel.org; netdev@...r.kernel.org; linux-
> kernel@...r.kernel.org; linux-rdma@...r.kernel.org
> Subject: [PATCH net-next v3 2/2] net: mana: Add standard counter
> rx_missed_errors
> 
> Report standard counter stats->rx_missed_errors
> using hc_rx_discards_no_wqe from the hardware.
> 
> Add a global workqueue to periodically run
> mana_query_gf_stats every 2 seconds to get the latest
> info in eth_stats and define a driver capability flag
> to notify hardware of the periodic queries.
> 
> To avoid repeated failures and log flooding, the workqueue
> is not rescheduled if mana_query_gf_stats fails on HWC timeout
> error and the stats are reset to 0. Other errors are transient
> which will not need a VF reset for recovery.
> 
> Signed-off-by: Erni Sri Satya Vennela <ernis@...ux.microsoft.com>

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