netdev - Re: [PATCH 1/4] net: skb_orphan on dev_hard_start

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]

Date:	Wed, 03 Jun 2009 21:56:21 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	rusty@...tcorp.com.au, netdev@...r.kernel.org,
	virtualization@...ts.linux-foundation.org, divy@...lsio.com,
	rolandd@...co.com, xemul@...nvz.org, dcbw@...hat.com,
	libertas-dev@...ts.infradead.org
Subject: Re: [PATCH 1/4] net: skb_orphan on dev_hard_start_xmit

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 04 Jun 2009 06:54:24 +0200

> We also can avoid the sock_put()/sock_hold() pair for each tx packet,
> to only touch sk_wmem_alloc (with appropriate atomic_sub_return() in sock_wfree()
> and atomic_dec_test in sk_free
> 
> We could initialize sk->sk_wmem_alloc to one instead of 0, so that
> sock_wfree() could just synchronize itself with sk_free()

Excellent idea Eric.

> Patch will follow after some testing

I look forward to it :-)
--
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