netdev - Re: rare bad TCP checksum with 2.6.19?

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 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]

Date:	Mon, 15 Jan 2007 22:33:36 +0300
From:	Michael Tokarev <mjt@....msk.ru>
To:	Eric Dumazet <dada1@...mosbay.com>
CC:	Herbert Xu <herbert@...dor.apana.org.au>, netdev@...r.kernel.org
Subject: Re: rare bad TCP checksum with 2.6.19?

Eric Dumazet wrote:
> Michael Tokarev a e'crit :
>>
>> Any idea how to force sending FIN-with-data?
> 
> int flag_on = 1;
> setsockopt(fd, SOL_TCP, TCP_CORK, &flag_on, sizeof(int));
> send(fd, data, datalen, 0);
> close(fd);

That produces two packets - one (or more - depending on the
size) data packet and one FIN packet w/o any data.

This is the first thing I've tried.

/mjt
-
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