netdev - Re: [PATCH net-next-2.6] ip

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, 29 Sep 2010 10:18:08 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	nicolas.dichtel@...nd.com
Cc:	David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next-2.6] ip_gre: lockless xmit

Le mercredi 29 septembre 2010 à 10:10 +0200, Nicolas Dichtel a écrit :
> NETIF_F_LLTX is marked as deprecated:
> 
> include/linux/netdevice.h:
> #define NETIF_F_LLTX            4096    /* LockLess TX - deprecated. 
> Please */
>                                          /* do not use LLTX in new 
> drivers */
> 
> Is it right to use it?
> 

In this particular case (and drivers/net/loopback.c), yes.

This is the only way to avoid the locking in core network
(net/core/dev.c)

What is deprecated is to assert NETIF_F_LLTX and yet, use a lock in the
ndo_xmit() driver method.



--
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