netdev - Re: [PATCH] tcp: make TCP quick ACK behavior modifiable

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

Message-ID: <20100823204920.GC5896@nuttenaction>
Date:	Mon, 23 Aug 2010 22:49:20 +0200
From:	Hagen Paul Pfeifer <hagen@...u.net>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>
Subject: Re: [PATCH] tcp: make TCP quick ACK behavior modifiable

* Eric Dumazet | 2010-08-23 22:44:03 [+0200]:

>>  static inline void inet_csk_delack_init(struct sock *sk)
>>  {
>>  	memset(&inet_csk(sk)->icsk_ack, 0, sizeof(inet_csk(sk)->icsk_ack));
>> +	inet_csk(sk)->icsk_ack.pingpong = sysctl_tcp_quickack ? 0 : 1;
>
>What about dccp using this function ?

I will check this and re-spin the patch if necessary. Thank you Eric, I missed
DCCP.

>So here is a new undocumented setting ? hint hint...
>
>I thought setsockopt(TCP_QUICKACK) was already available for this
>optimization ?

... and it is still available. ;-) See my other post answering Stephen's email.

Hagen
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html