linux-kernel - Re: sockets affected by IPsec always block (2.6.23)

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:	Thu, 06 Dec 2007 19:20:30 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	stefan@...lof.de
Cc:	herbert@...dor.apana.org.au, simon@...e.lp0.eu,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: sockets affected by IPsec always block (2.6.23)

From: Stefan Rompf <stefan@...lof.de>
Date: Thu, 6 Dec 2007 15:31:53 +0100

> as far as I've understood Herbert's patch, at least TCP connect can be fixed 
> so that non blocking connect() will neither fail nor block, but just use the 
> first or second retransmission of the SYN packet to complete the handshake 
> after IPSEC is up.

If IPSEC takes a long time to resolve, and we don't block, the
connect() can hard fail (we will just keep dropping the outgoing SYN
packet send attempts, eventually hitting the retry limit) in cases
where if we did block it would not fail (because we wouldn't send
the first SYN until IPSEC resolved).
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/