netdev - Re: [PATCH] ipv4: fix for ip_options_rcv

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:	Tue, 15 Nov 2011 15:51:29 +0800
From:	Li Wei <lw@...fujitsu.com>
To:	David Miller <davem@...emloft.net>
CC:	netdev@...r.kernel.org
Subject: Re: [PATCH] ipv4: fix for ip_options_rcv_srr() daddr update.

> From: Li Wei <lw@...fujitsu.com>
> Date: Tue, 15 Nov 2011 15:26:31 +0800
> 
>> My question, in ip_forward() and ip_forward_options() rt is there, why not
>> we just use it?
> 
> Because I'm trying to eliminate all accesses to rt->rt_dst because
> when I remove the routing cache, routes will be shared.  One 'rt'
> will refer to many specific destination addresses.
> 
> 
Sorry, I can't understand what you said, can you make it more clear?

I think in ip_forward(), we need 'rt' to forward skb, until this skb has been 
forwarded we hold a reference to it in skb, We can use rt->rt_dst safely, It
is an ordinary __be32 not a reference.

--
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