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From: Stefan Schmidt <stefan-JPH+aEBZ4P+UEJcrhfAQsw@public•gmane.org>
To: Alexander Aring <aar-bIcnvbaLZ9MEGnE8C9+IrQ@public•gmane.org>,
	linux-wpan-u79uwXL29TY76Z2rM5mHXA@public•gmane.org
Cc: kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public•gmane.org,
	marcel-kz+m5ild9QBg9hUCZPvPmw@public•gmane.org,
	jukka.rissanen-VuQAYsv1563Yd54FQh9/CA@public•gmane.org,
	hannes-tFNcAqjVMyqKXQKiL6tip0B+6BGkLq7r@public•gmane.org,
	mcr-SWp7JaYWvAQV+D8aMU/kSg@public•gmane.org,
	werner-SEdMjqphH88wryQfseakQg@public•gmane.org,
	linux-bluetooth-u79uwXL29TY76Z2rM5mHXA@public•gmane.org,
	netdev-u79uwXL29TY76Z2rM5mHXA@public•gmane.org,
	"David S . Miller"
	<davem-fT/PcQaiUtIeIZ0/mPfg9Q@public•gmane.org>,
	Alexey Kuznetsov <kuznet-v/Mj1YrvjDBInbfyfbPRSQ@public•gmane.org>,
	James Morris <jmorris-gx6/JNMH7DfYtjvyW6yDsg@public•gmane.org>,
	Hideaki YOSHIFUJI
	<yoshfuji-VfPWfsRibaP+Ru+s062T9g@public•gmane.org>,
	Patrick McHardy <kaber-dcUjhNyLwpNeoWH0uzbU5w@public•gmane.org>
Subject: Re: [PATCHv2 bluetooth-next 07/10] ipv6: introduce neighbour discovery ops
Date: Wed, 4 May 2016 14:23:07 +0200	[thread overview]
Message-ID: <5729E9AB.5000301@osg.samsung.com> (raw)
In-Reply-To: <1461140382-4784-8-git-send-email-aar-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>

Hello.

On 20/04/16 10:19, Alexander Aring wrote:
> This patch introduces neighbour discovery ops callback structure. The
> structure contains at first receive and transmit handling for NS/NA and
> userspace option field functionality.
>
> These callback offers 6lowpan different handling, such as 802.15.4 short
> address handling or RFC6775 (Neighbor Discovery Optimization for IPv6 over
> 6LoWPANs).
>
> Cc: David S. Miller<davem-fT/PcQaiUtIeIZ0/mPfg9Q@public•gmane.org>
> Cc: Alexey Kuznetsov<kuznet-v/Mj1YrvjDBInbfyfbPRSQ@public•gmane.org>
> Cc: James Morris<jmorris-gx6/JNMH7DfYtjvyW6yDsg@public•gmane.org>
> Cc: Hideaki YOSHIFUJI<yoshfuji-VfPWfsRibaP+Ru+s062T9g@public•gmane.org>
> Cc: Patrick McHardy<kaber-dcUjhNyLwpNeoWH0uzbU5w@public•gmane.org>
> Signed-off-by: Alexander Aring<aar-bIcnvbaLZ9MEGnE8C9+IrQ@public•gmane.org>
> ---
>   include/linux/netdevice.h |  3 ++
>   include/net/ndisc.h       | 96 +++++++++++++++++++++++++++++++++++++++++++----
>   net/ipv6/addrconf.c       |  1 +
>   net/ipv6/ndisc.c          | 71 ++++++++++++++++++++++++-----------
>   net/ipv6/route.c          |  2 +-
>   5 files changed, 144 insertions(+), 29 deletions(-)
>
> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index 0052c42..bc60033 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -1677,6 +1677,9 @@ struct net_device {
>   #ifdef CONFIG_NET_L3_MASTER_DEV
>   	const struct l3mdev_ops	*l3mdev_ops;
>   #endif
> +#if IS_ENABLED(CONFIG_IPV6)
> +	const struct ndisc_ops *ndisc_ops;
> +#endif
>   
>   	const struct header_ops *header_ops;
>   
> diff --git a/include/net/ndisc.h b/include/net/ndisc.h
> index aac868e..14ed016 100644
> --- a/include/net/ndisc.h
> +++ b/include/net/ndisc.h
> @@ -110,7 +110,8 @@ struct ndisc_options {
>   
>   #define NDISC_OPT_SPACE(len) (((len)+2+7)&~7)
>   
> -struct ndisc_options *ndisc_parse_options(u8 *opt, int opt_len,
> +struct ndisc_options *ndisc_parse_options(const struct net_device *dev,
> +					  u8 *opt, int opt_len,
>   					  struct ndisc_options *ndopts);
>   
>   /*
> @@ -173,6 +174,93 @@ static inline struct neighbour *__ipv6_neigh_lookup(struct net_device *dev, cons
>   	return n;
>   }
>   
> +static inline int __ip6_ndisc_is_useropt(struct nd_opt_hdr *opt)

Name it __ipv6... instead of __ip6...?
> +{
> +	return opt->nd_opt_type == ND_OPT_RDNSS ||
> +		opt->nd_opt_type == ND_OPT_DNSSL;
> +}
> +
> +#if IS_ENABLED(CONFIG_IPV6)
> +struct ndisc_ops {
> +	int	(*is_useropt)(struct nd_opt_hdr *opt);
> +	void	(*send_na)(struct net_device *dev,
> +			   const struct in6_addr *daddr,
> +			   const struct in6_addr *solicited_addr,
> +			   bool router, bool solicited,
> +			   bool override, bool inc_opt);
> +	void	(*recv_na)(struct sk_buff *skb);
> +	void	(*send_ns)(struct net_device *dev,
> +			   const struct in6_addr *solicit,
> +			   const struct in6_addr *daddr,
> +			   const struct in6_addr *saddr);
> +	void	(*recv_ns)(struct sk_buff *skb);
> +};
> +
> +static inline int ndisc_is_useropt(const struct net_device *dev,
> +				   struct nd_opt_hdr *opt)
> +{
> +	if (likely(dev->ndisc_ops->is_useropt))
> +		return dev->ndisc_ops->is_useropt(opt);
> +	else
> +		return 0;
> +}
> +
> +static inline void ndisc_send_na(struct net_device *dev,
> +				 const struct in6_addr *daddr,
> +				 const struct in6_addr *solicited_addr,
> +				 bool router, bool solicited, bool override,
> +				 bool inc_opt)
> +{
> +	if (likely(dev->ndisc_ops->send_na))
> +		dev->ndisc_ops->send_na(dev, daddr, solicited_addr, router,
> +					solicited, override, inc_opt);
> +}
> +
> +static inline void ndisc_recv_na(struct sk_buff *skb)
> +{
> +	if (likely(skb->dev->ndisc_ops->recv_na))
> +		skb->dev->ndisc_ops->recv_na(skb);
> +}
> +
> +static inline void ndisc_send_ns(struct net_device *dev,
> +				 const struct in6_addr *solicit,
> +				 const struct in6_addr *daddr,
> +				 const struct in6_addr *saddr)
> +{
> +	if (likely(dev->ndisc_ops->send_ns))
> +		dev->ndisc_ops->send_ns(dev, solicit, daddr, saddr);
> +}
> +
> +static inline void ndisc_recv_ns(struct sk_buff *skb)
> +{
> +	if (likely(skb->dev->ndisc_ops->recv_ns))
> +		skb->dev->ndisc_ops->recv_ns(skb);
> +}
> +#else
> +static inline int ndisc_is_useropt(const struct net_device *dev,
> +				   struct nd_opt_hdr *opt)
> +{
> +	return 0;
> +}
> +
> +static inline void ndisc_send_na(struct net_device *dev,
> +				 const struct in6_addr *daddr,
> +				 const struct in6_addr *solicited_addr,
> +				 bool router, bool solicited, bool override,
> +				 bool inc_opt) { }
> +
> +static inline void ndisc_recv_na(struct sk_buff *skb) { }
> +
> +static inline void ndisc_send_ns(struct net_device *dev,
> +				 const struct in6_addr *solicit,
> +				 const struct in6_addr *daddr,
> +				 const struct in6_addr *saddr) { }
> +
> +static inline void ndisc_recv_ns(struct sk_buff *skb) { }
> +#endif
> +
> +void ip6_register_ndisc_ops(struct net_device *dev);
> +
>   int ndisc_init(void);
>   int ndisc_late_init(void);
>   
> @@ -181,14 +269,8 @@ void ndisc_cleanup(void);
>   
>   int ndisc_rcv(struct sk_buff *skb);
>   
> -void ndisc_send_ns(struct net_device *dev, const struct in6_addr *solicit,
> -		   const struct in6_addr *daddr, const struct in6_addr *saddr);
> -
>   void ndisc_send_rs(struct net_device *dev,
>   		   const struct in6_addr *saddr, const struct in6_addr *daddr);
> -void ndisc_send_na(struct net_device *dev, const struct in6_addr *daddr,
> -		   const struct in6_addr *solicited_addr,
> -		   bool router, bool solicited, bool override, bool inc_opt);
>   
>   void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target);
>   
> diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
> index 54e18c2..a2ef04b 100644
> --- a/net/ipv6/addrconf.c
> +++ b/net/ipv6/addrconf.c
> @@ -3266,6 +3266,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
>   			idev = ipv6_add_dev(dev);
>   			if (IS_ERR(idev))
>   				return notifier_from_errno(PTR_ERR(idev));
> +			ip6_register_ndisc_ops(dev);
>   		}
>   		break;
>   
> diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
> index 176c7c4..297080a 100644
> --- a/net/ipv6/ndisc.c
> +++ b/net/ipv6/ndisc.c
> @@ -185,24 +185,25 @@ static struct nd_opt_hdr *ndisc_next_option(struct nd_opt_hdr *cur,
>   	return cur <= end && cur->nd_opt_type == type ? cur : NULL;
>   }
>   
> -static inline int ndisc_is_useropt(struct nd_opt_hdr *opt)
> +static inline int ip6_ndisc_is_useropt(struct nd_opt_hdr *opt)
>   {
> -	return opt->nd_opt_type == ND_OPT_RDNSS ||
> -		opt->nd_opt_type == ND_OPT_DNSSL;
> +	return __ip6_ndisc_is_useropt(opt);

Why putting this check into a different function? It looks like a not 
needed redirection.
>   }
>   
> -static struct nd_opt_hdr *ndisc_next_useropt(struct nd_opt_hdr *cur,
> +static struct nd_opt_hdr *ndisc_next_useropt(const struct net_device *dev,
> +					     struct nd_opt_hdr *cur,
>   					     struct nd_opt_hdr *end)
>   {
>   	if (!cur || !end || cur >= end)
>   		return NULL;
>   	do {
>   		cur = ((void *)cur) + (cur->nd_opt_len << 3);
> -	} while (cur < end && !ndisc_is_useropt(cur));
> -	return cur <= end && ndisc_is_useropt(cur) ? cur : NULL;
> +	} while (cur < end && !ndisc_is_useropt(dev, cur));
> +	return cur <= end && ndisc_is_useropt(dev, cur) ? cur : NULL;
>   }
>   
> -struct ndisc_options *ndisc_parse_options(u8 *opt, int opt_len,
> +struct ndisc_options *ndisc_parse_options(const struct net_device *dev,
> +					  u8 *opt, int opt_len,
>   					  struct ndisc_options *ndopts)
>   {
>   	struct nd_opt_hdr *nd_opt = (struct nd_opt_hdr *)opt;
> @@ -243,7 +244,7 @@ struct ndisc_options *ndisc_parse_options(u8 *opt, int opt_len,
>   			break;
>   #endif
>   		default:
> -			if (ndisc_is_useropt(nd_opt)) {
> +			if (ndisc_is_useropt(dev, nd_opt)) {
>   				ndopts->nd_useropts_end = nd_opt;
>   				if (!ndopts->nd_useropts)
>   					ndopts->nd_useropts = nd_opt;
> @@ -479,9 +480,11 @@ static void ndisc_send_skb(struct sk_buff *skb,
>   	rcu_read_unlock();
>   }
>   
> -void ndisc_send_na(struct net_device *dev, const struct in6_addr *daddr,
> -		   const struct in6_addr *solicited_addr,
> -		   bool router, bool solicited, bool override, bool inc_opt)
> +static void ip6_ndisc_send_na(struct net_device *dev,
> +			      const struct in6_addr *daddr,
> +			      const struct in6_addr *solicited_addr,
> +			      bool router, bool solicited, bool override,
> +			      bool inc_opt)
>   {
>   	struct sk_buff *skb;
>   	struct in6_addr tmpaddr;
> @@ -555,8 +558,10 @@ static void ndisc_send_unsol_na(struct net_device *dev)
>   	in6_dev_put(idev);
>   }
>   
> -void ndisc_send_ns(struct net_device *dev, const struct in6_addr *solicit,
> -		   const struct in6_addr *daddr, const struct in6_addr *saddr)
> +static void ip6_ndisc_send_ns(struct net_device *dev,
> +			      const struct in6_addr *solicit,
> +			      const struct in6_addr *daddr,
> +			      const struct in6_addr *saddr)
>   {
>   	struct sk_buff *skb;
>   	struct in6_addr addr_buf;
> @@ -702,7 +707,7 @@ static int pndisc_is_router(const void *pkey,
>   	return ret;
>   }
>   
> -static void ndisc_recv_ns(struct sk_buff *skb)
> +static void ip6_ndisc_recv_ns(struct sk_buff *skb)
>   {
>   	struct nd_msg *msg = (struct nd_msg *)skb_transport_header(skb);
>   	const struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
> @@ -738,7 +743,7 @@ static void ndisc_recv_ns(struct sk_buff *skb)
>   		return;
>   	}
>   
> -	if (!ndisc_parse_options(msg->opt, ndoptlen, &ndopts)) {
> +	if (!ndisc_parse_options(dev, msg->opt, ndoptlen, &ndopts)) {
>   		ND_PRINTK(2, warn, "NS: invalid ND options\n");
>   		return;
>   	}
> @@ -874,7 +879,7 @@ out:
>   		in6_dev_put(idev);
>   }
>   
> -static void ndisc_recv_na(struct sk_buff *skb)
> +static void ip6_ndisc_recv_na(struct sk_buff *skb)
>   {
>   	struct nd_msg *msg = (struct nd_msg *)skb_transport_header(skb);
>   	struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
> @@ -912,7 +917,7 @@ static void ndisc_recv_na(struct sk_buff *skb)
>   	    idev->cnf.drop_unsolicited_na)
>   		return;
>   
> -	if (!ndisc_parse_options(msg->opt, ndoptlen, &ndopts)) {
> +	if (!ndisc_parse_options(dev, msg->opt, ndoptlen, &ndopts)) {
>   		ND_PRINTK(2, warn, "NS: invalid ND option\n");
>   		return;
>   	}
> @@ -1019,7 +1024,7 @@ static void ndisc_recv_rs(struct sk_buff *skb)
>   		goto out;
>   
>   	/* Parse ND options */
> -	if (!ndisc_parse_options(rs_msg->opt, ndoptlen, &ndopts)) {
> +	if (!ndisc_parse_options(skb->dev, rs_msg->opt, ndoptlen, &ndopts)) {
>   		ND_PRINTK(2, notice, "NS: invalid ND option, ignored\n");
>   		goto out;
>   	}
> @@ -1137,7 +1142,7 @@ static void ndisc_router_discovery(struct sk_buff *skb)
>   		return;
>   	}
>   
> -	if (!ndisc_parse_options(opt, optlen, &ndopts)) {
> +	if (!ndisc_parse_options(skb->dev, opt, optlen, &ndopts)) {
>   		ND_PRINTK(2, warn, "RA: invalid ND options\n");
>   		return;
>   	}
> @@ -1424,7 +1429,8 @@ skip_routeinfo:
>   		struct nd_opt_hdr *p;
>   		for (p = ndopts.nd_useropts;
>   		     p;
> -		     p = ndisc_next_useropt(p, ndopts.nd_useropts_end)) {
> +		     p = ndisc_next_useropt(skb->dev, p,
> +					    ndopts.nd_useropts_end)) {
>   			ndisc_ra_useropt(skb, p);
>   		}
>   	}
> @@ -1462,7 +1468,7 @@ static void ndisc_redirect_rcv(struct sk_buff *skb)
>   		return;
>   	}
>   
> -	if (!ndisc_parse_options(msg->opt, ndoptlen, &ndopts))
> +	if (!ndisc_parse_options(skb->dev, msg->opt, ndoptlen, &ndopts))
>   		return;
>   
>   	if (!ndopts.nd_opts_rh) {
> @@ -1783,6 +1789,29 @@ int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl, int write, void __user *bu
>   
>   #endif
>   
> +static const struct ndisc_ops ip6_ndisc_ops = {
> +	.is_useropt = ip6_ndisc_is_useropt,
> +	.send_na = ip6_ndisc_send_na,
> +	.recv_na = ip6_ndisc_recv_na,
> +	.send_ns = ip6_ndisc_send_ns,
> +	.recv_ns = ip6_ndisc_recv_ns,

Here I would also think ipv6 as prefix would be nicer.

> +};
> +
> +void ip6_register_ndisc_ops(struct net_device *dev)
> +{
> +	switch (dev->type) {
> +	default:
> +		if (dev->ndisc_ops) {
> +			ND_PRINTK(2, warn,
> +				  "%s: ndisc_ops already defined for interface type=%d\n",
> +				  __func__, dev->type);
> +		} else {
> +			dev->ndisc_ops = &ip6_ndisc_ops;
> +		}
> +		break;
> +	}
> +}
> +
>   static int __net_init ndisc_net_init(struct net *net)
>   {
>   	struct ipv6_pinfo *np;
> diff --git a/net/ipv6/route.c b/net/ipv6/route.c
> index cc180b3..5fa276d 100644
> --- a/net/ipv6/route.c
> +++ b/net/ipv6/route.c
> @@ -2149,7 +2149,7 @@ static void rt6_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_bu
>   	 *	first-hop router for the specified ICMP Destination Address.
>   	 */
>   
> -	if (!ndisc_parse_options(msg->opt, optlen, &ndopts)) {
> +	if (!ndisc_parse_options(skb->dev, msg->opt, optlen, &ndopts)) {
>   		net_dbg_ratelimited("rt6_redirect: invalid ND options\n");
>   		return;
>   	}

Reviewed-by: Stefan Schmidt<stefan-JPH+aEBZ4P+UEJcrhfAQsw@public•gmane.org>

regards
Stefan Schmidt

  parent reply	other threads:[~2016-05-04 12:23 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-20  8:19 [PATCHv2 bluetooth-next 00/10] 6lowpan: introduce basic 6lowpan-nd Alexander Aring
2016-04-20  8:19 ` [PATCHv2 bluetooth-next 06/10] ndisc: add addr_len parameter to ndisc_fill_addr_option Alexander Aring
2016-05-03 18:17   ` Stefan Schmidt
2016-04-20  8:19 ` [PATCHv2 bluetooth-next 08/10] ipv6: export ndisc functions Alexander Aring
2016-05-02 19:39   ` Hannes Frederic Sowa
2016-05-08 10:46     ` Alexander Aring
     [not found]   ` <1461140382-4784-9-git-send-email-aar-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2016-05-04 12:23     ` Stefan Schmidt
2016-04-20  8:19 ` [PATCHv2 bluetooth-next 10/10] 6lowpan: add support for 802.15.4 short addr handling Alexander Aring
     [not found]   ` <1461140382-4784-11-git-send-email-aar-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2016-05-04 12:23     ` Stefan Schmidt
2016-04-28 11:36 ` [PATCHv2 bluetooth-next 00/10] 6lowpan: introduce basic 6lowpan-nd Alexander Aring
     [not found] ` <1461140382-4784-1-git-send-email-aar-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2016-04-20  8:19   ` [PATCHv2 bluetooth-next 01/10] 6lowpan: add private neighbour data Alexander Aring
2016-05-02 18:59     ` Hannes Frederic Sowa
2016-05-04 10:43       ` Alexander Aring
2016-05-03 18:16     ` Stefan Schmidt
2016-04-20  8:19   ` [PATCHv2 bluetooth-next 02/10] 6lowpan: add 802.15.4 short addr slaac Alexander Aring
2016-05-02 19:06     ` Hannes Frederic Sowa
     [not found]     ` <1461140382-4784-3-git-send-email-aar-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2016-05-03 18:16       ` Stefan Schmidt
2016-05-06  9:26         ` Alexander Aring
2016-04-20  8:19   ` [PATCHv2 bluetooth-next 03/10] 6lowpan: remove ipv6 module request Alexander Aring
2016-05-02 19:06     ` Hannes Frederic Sowa
2016-05-03 18:16     ` Stefan Schmidt
2016-04-20  8:19   ` [PATCHv2 bluetooth-next 04/10] ndisc: add addr_len parameter to ndisc_opt_addr_space Alexander Aring
2016-05-02 19:37     ` Hannes Frederic Sowa
2016-05-04 12:30       ` Alexander Aring
     [not found]         ` <800c5c08-c2c8-3b44-d457-cdcf6374f280-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2016-05-06 22:23           ` Hannes Frederic Sowa
2016-05-08 10:39             ` Alexander Aring
2016-05-18 21:39               ` Michael Richardson
2016-05-03 18:17     ` Stefan Schmidt
2016-04-20  8:19   ` [PATCHv2 bluetooth-next 05/10] ndisc: add addr_len parameter to ndisc_opt_addr_data Alexander Aring
2016-05-03 18:17     ` Stefan Schmidt
2016-04-20  8:19   ` [PATCHv2 bluetooth-next 07/10] ipv6: introduce neighbour discovery ops Alexander Aring
2016-05-02 19:36     ` Hannes Frederic Sowa
     [not found]       ` <fbd4c25c-2673-2848-c636-a5d21a6890d7-tFNcAqjVMyqKXQKiL6tip0B+6BGkLq7r@public.gmane.org>
2016-05-03 18:17         ` Stefan Schmidt
     [not found]           ` <5728EB3F.2060808-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>
2016-05-06  9:36             ` Alexander Aring
     [not found]     ` <1461140382-4784-8-git-send-email-aar-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2016-05-04 12:23       ` Stefan Schmidt [this message]
     [not found]         ` <5729E9AB.5000301-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>
2016-05-06  9:47           ` Alexander Aring
2016-05-06 10:19             ` Alexander Aring
2016-04-20  8:19   ` [PATCHv2 bluetooth-next 09/10] 6lowpan: introduce 6lowpan-nd Alexander Aring
     [not found]     ` <1461140382-4784-10-git-send-email-aar-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2016-05-04 12:23       ` Stefan Schmidt
2016-05-02 17:25   ` [PATCHv2 bluetooth-next 00/10] 6lowpan: introduce basic 6lowpan-nd Marcel Holtmann
     [not found]     ` <D212A5BF-A414-403B-A409-1F8C2D279883-kz+m5ild9QBg9hUCZPvPmw@public.gmane.org>
2016-05-02 19:52       ` Hannes Frederic Sowa
     [not found]         ` <870fdf5f-82ed-b621-a8d5-625bf9d81d0d-tFNcAqjVMyqKXQKiL6tip0B+6BGkLq7r@public.gmane.org>
2016-05-02 23:17           ` Marcel Holtmann
     [not found]             ` <58926844-0338-4D63-A5B6-DB0EBE903A0E-kz+m5ild9QBg9hUCZPvPmw@public.gmane.org>
2016-05-03 20:07               ` David Miller
2016-05-13  2:59       ` YOSHIFUJI Hideaki
     [not found]         ` <57354315.2050509-GmhWrQMWH5w7YuNMryXyOw@public.gmane.org>
2016-05-13 12:33           ` Alexander Aring

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