netdev - Re: [PATCH V2 net-next] liquidio: xmit

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20171028.003546.1014898137892267978.davem@davemloft.net>
Date:   Sat, 28 Oct 2017 00:35:46 +0900 (KST)
From:   David Miller <davem@...emloft.net>
To:     felix.manlunas@...ium.com
Cc:     netdev@...r.kernel.org, raghu.vatsavayi@...ium.com,
        derek.chickles@...ium.com, satananda.burla@...ium.com,
        intiyaz.basha@...ium.com
Subject: Re: [PATCH V2 net-next] liquidio: xmit_more support

From: Felix Manlunas <felix.manlunas@...ium.com>
Date: Thu, 26 Oct 2017 16:18:20 -0700

> From: Intiyaz Basha <intiyaz.basha@...ium.com>
> 
> Defer ringing the Tx doorbell if skb->xmit_more is set unless the Tx queue
> is full or stopped.  To keep latency low, use a deferral limit of 8
> packets.  We chose 8 because Octeon can fetch at most 8 packets in a single
> PCI read, and our tests show that 8 results in low latency.
> 
> Signed-off-by: Intiyaz Basha <intiyaz.basha@...ium.com>
> Signed-off-by: Satanand Burla <satananda.burla@...ium.com>
> Signed-off-by: Felix Manlunas <felix.manlunas@...ium.com>
> ---
> Patch Change Log:
>   V1 -> V2:
>     Add a Tx doorbell ring deferral limit as suggested by David Miller

Applied, thank you.