linux-kernel - Re: [PATCH net-next v5 1/2] net/smc: make wr buffer count configurable

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Message-ID: <aNng0d1YGP7K0C6z@linux.alibaba.com>
Date: Mon, 29 Sep 2025 09:28:49 +0800
From: Dust Li <dust.li@...ux.alibaba.com>
To: Halil Pasic <pasic@...ux.ibm.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>, Jonathan Corbet <corbet@....net>,
	"D. Wythe" <alibuda@...ux.alibaba.com>,
	Sidraya Jayagond <sidraya@...ux.ibm.com>,
	Wenjia Zhang <wenjia@...ux.ibm.com>,
	Mahanta Jambigi <mjambigi@...ux.ibm.com>,
	Tony Lu <tonylu@...ux.alibaba.com>,
	Wen Gu <guwen@...ux.alibaba.com>,
	Guangguan Wang <guangguan.wang@...ux.alibaba.com>,
	netdev@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
	linux-s390@...r.kernel.org
Subject: Re: [PATCH net-next v5 1/2] net/smc: make wr buffer count
 configurable

On 2025-09-29 02:00:00, Halil Pasic wrote:
>Think SMC_WR_BUF_CNT_SEND := SMC_WR_BUF_CNT used in send context and
>SMC_WR_BUF_CNT_RECV := 3 * SMC_WR_BUF_CNT used in recv context. Those
>get replaced with lgr->max_send_wr and lgr->max_recv_wr respective.
>
>Please note that although with the default sysctl values
>qp_attr.cap.max_send_wr ==  qp_attr.cap.max_recv_wr is maintained but
>can not be assumed to be generally true any more. I see no downside to
>that, but my confidence level is rather modest.
>
>Signed-off-by: Halil Pasic <pasic@...ux.ibm.com>
>Reviewed-by: Sidraya Jayagond <sidraya@...ux.ibm.com>

Reviewed-by: Dust Li <dust.li@...ux.alibaba.com>

Best regards,
Dust