netdev - Re: TCP connection stops after high load.

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: <E1HcZlg-0006Bi-00@gondolin.me.apana.org.au>
Date:	Sat, 14 Apr 2007 14:21:44 +1000
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	dada1@...mosbay.com (Eric Dumazet)
Cc:	danielschaffrath@....com, greearb@...delatech.com,
	andi@...stfloor.org, netdev@...r.kernel.org, bcrl@...ck.org
Subject: Re: TCP connection stops after high load.

Eric Dumazet <dada1@...mosbay.com> wrote:
> 
> dev_queue_xmit_nit() is called before attempting to send packet to device.
> 
> If device could not accept the packet (hard_start_xmit() returns an error), packet is requeued and retried later.
> each retry means call ev_queue_xmit_nit() again, so tcpdump/sniffers can 'see' packet transmited several times. 

This should only happen with LLTX drivers.  In fact, LLTX drivers are
really more trouble than they're worth.  They should all be rewritten
to follow the model used in tg3.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
-
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