linux-kernel - Re: [PATCH net-next v2 0/2] net/smc: Change the upper boundary of SMC-R's snd_buf and rcv

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Date: Mon, 03 Jun 2024 11:20:29 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Guangguan Wang <guangguan.wang@...ux.alibaba.com>
Cc: wenjia@...ux.ibm.com, jaka@...ux.ibm.com, davem@...emloft.net,
 edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
 kgraul@...ux.ibm.com, alibuda@...ux.alibaba.com, tonylu@...ux.alibaba.com,
 guwen@...ux.alibaba.com, linux-s390@...r.kernel.org, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v2 0/2] net/smc: Change the upper boundary of SMC-R's
 snd_buf and rcv_buf to 512MB

Hello:

This series was applied to netdev/net-next.git (main)
by David S. Miller <davem@...emloft.net>:

On Mon,  3 Jun 2024 11:00:17 +0800 you wrote:
> SMCR_RMBE_SIZES is the upper boundary of SMC-R's snd_buf and rcv_buf.
> The maximum bytes of snd_buf and rcv_buf can be calculated by 2^SMCR_
> RMBE_SIZES * 16KB. SMCR_RMBE_SIZES = 5 means the upper boundary is 512KB.
> TCP's snd_buf and rcv_buf max size is configured by net.ipv4.tcp_w/rmem[2]
> whose default value is 4MB or 6MB, is much larger than SMC-R's upper
> boundary.
> 
> [...]

Here is the summary with links:
  - [net-next,v2,1/2] net/smc: set rmb's SG_MAX_SINGLE_ALLOC limitation only when CONFIG_ARCH_NO_SG_CHAIN is defined
    https://git.kernel.org/netdev/net-next/c/3ac14b9dfbd3
  - [net-next,v2,2/2] net/smc: change SMCR_RMBE_SIZES from 5 to 15
    https://git.kernel.org/netdev/net-next/c/2f4b101c542e

You are awesome, thank you!
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