netdev - Re: [PATCH] ipv6: Add IFA_F

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, 08 Sep 2009 15:57:27 +0200
From:	Jens Rosenboom <jens@...one.net>
To:	Brian Haley <brian.haley@...com>
Cc:	david Miller <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
Subject: Re: [PATCH] ipv6: Add IFA_F_DADFAILED flag

On Fri, 2009-09-04 at 21:38 -0400, Brian Haley wrote:
> [Note: if this is accepted I'll send out a patch for iproute,
>  if you'd prefer to not use the last ifa_flag I'll send a
>  much larger patch that does this differently :) ]
> 
> 
> Add IFA_F_DADFAILED flag to denote an IPv6 address that has
> failed Duplicate Address Detection, that way tools like
> /sbin/ip can be more informative.
> 
> 3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
>     inet6 2001:db8::1/64 scope global tentative dadfailed 
>        valid_lft forever preferred_lft forever
> 
> Signed-off-by: Brian Haley <brian.haley@...com>
> ---
> 
> diff --git a/include/linux/if_addr.h b/include/linux/if_addr.h
> index a60c821..fd97404 100644
> --- a/include/linux/if_addr.h
> +++ b/include/linux/if_addr.h
> @@ -41,6 +41,7 @@ enum
>  
>  #define	IFA_F_NODAD		0x02
>  #define IFA_F_OPTIMISTIC	0x04
> +#define IFA_F_DADFAILED		0x08
>  #define	IFA_F_HOMEADDRESS	0x10
>  #define IFA_F_DEPRECATED	0x20
>  #define IFA_F_TENTATIVE		0x40
> diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
> index 43b3c9f..6532966 100644
> --- a/net/ipv6/addrconf.c
> +++ b/net/ipv6/addrconf.c
> @@ -1376,7 +1376,7 @@ static void addrconf_dad_stop(struct inet6_ifaddr *ifp)
>  	if (ifp->flags&IFA_F_PERMANENT) {
>  		spin_lock_bh(&ifp->lock);
>  		addrconf_del_timer(ifp);
> -		ifp->flags |= IFA_F_TENTATIVE;
> +		ifp->flags |= IFA_F_DADFAILED;

I think you still have to set IFA_F_TENTATIVE here, too, otherwise
ipv6_dev_get_saddr() will use this address. 		

--
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