From: Stefan Schmidt <stefan@osg•samsung.com>
To: Alexander Aring <aar@pengutronix•de>, linux-wpan@vger•kernel.org
Cc: kernel@pengutronix•de, marcel@holtmann•org,
jukka.rissanen@linux•intel.com, hannes@stressinduktion•org,
mcr@sandelman•ca, werner@almesberger•net,
linux-bluetooth@vger•kernel.org, netdev@vger•kernel.org,
"David S . Miller" <davem@davemloft•net>,
Alexey Kuznetsov <kuznet@ms2•inr.ac.ru>,
James Morris <jmorris@namei•org>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6•org>,
Patrick McHardy <kaber@trash•net>
Subject: Re: [PATCHv2 bluetooth-next 05/10] ndisc: add addr_len parameter to ndisc_opt_addr_data
Date: Tue, 3 May 2016 20:17:14 +0200 [thread overview]
Message-ID: <5728EB2A.4060001@osg.samsung.com> (raw)
In-Reply-To: <1461140382-4784-6-git-send-email-aar@pengutronix.de>
Hello.
On 20/04/16 10:19, Alexander Aring wrote:
> This patch makes the address length as argument for the
> ndisc_opt_addr_data function. This is necessary to handle addresses
> which don't use dev->addr_len as address length.
>
> Cc: David S. Miller<davem@davemloft•net>
> Cc: Alexey Kuznetsov<kuznet@ms2•inr.ac.ru>
> Cc: James Morris<jmorris@namei•org>
> Cc: Hideaki YOSHIFUJI<yoshfuji@linux-ipv6•org>
> Cc: Patrick McHardy<kaber@trash•net>
> Signed-off-by: Alexander Aring<aar@pengutronix•de>
> ---
> include/net/ndisc.h | 5 +++--
> net/ipv6/ndisc.c | 11 +++++++----
> net/ipv6/route.c | 2 +-
> 3 files changed, 11 insertions(+), 7 deletions(-)
>
> diff --git a/include/net/ndisc.h b/include/net/ndisc.h
> index ef43e88..aac868e 100644
> --- a/include/net/ndisc.h
> +++ b/include/net/ndisc.h
> @@ -134,12 +134,13 @@ static inline int ndisc_opt_addr_space(struct net_device *dev,
> }
>
> static inline u8 *ndisc_opt_addr_data(struct nd_opt_hdr *p,
> - struct net_device *dev)
> + struct net_device *dev,
> + unsigned char addr_len)
> {
> u8 *lladdr = (u8 *)(p + 1);
> int lladdrlen = p->nd_opt_len << 3;
> int prepad = ndisc_addr_option_pad(dev->type);
> - if (lladdrlen != ndisc_opt_addr_space(dev, dev->addr_len))
> + if (lladdrlen != ndisc_opt_addr_space(dev, addr_len))
> return NULL;
> return lladdr + prepad;
> }
> diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
> index 69e20e3..4e91d5e 100644
> --- a/net/ipv6/ndisc.c
> +++ b/net/ipv6/ndisc.c
> @@ -744,7 +744,8 @@ static void ndisc_recv_ns(struct sk_buff *skb)
> }
>
> if (ndopts.nd_opts_src_lladdr) {
> - lladdr = ndisc_opt_addr_data(ndopts.nd_opts_src_lladdr, dev);
> + lladdr = ndisc_opt_addr_data(ndopts.nd_opts_src_lladdr, dev,
> + dev->addr_len);
> if (!lladdr) {
> ND_PRINTK(2, warn,
> "NS: invalid link-layer address length\n");
> @@ -916,7 +917,8 @@ static void ndisc_recv_na(struct sk_buff *skb)
> return;
> }
> if (ndopts.nd_opts_tgt_lladdr) {
> - lladdr = ndisc_opt_addr_data(ndopts.nd_opts_tgt_lladdr, dev);
> + lladdr = ndisc_opt_addr_data(ndopts.nd_opts_tgt_lladdr, dev,
> + dev->addr_len);
> if (!lladdr) {
> ND_PRINTK(2, warn,
> "NA: invalid link-layer address length\n");
> @@ -1024,7 +1026,7 @@ static void ndisc_recv_rs(struct sk_buff *skb)
>
> if (ndopts.nd_opts_src_lladdr) {
> lladdr = ndisc_opt_addr_data(ndopts.nd_opts_src_lladdr,
> - skb->dev);
> + skb->dev, skb->dev->addr_len);
> if (!lladdr)
> goto out;
> }
> @@ -1322,7 +1324,8 @@ skip_linkparms:
> u8 *lladdr = NULL;
> if (ndopts.nd_opts_src_lladdr) {
> lladdr = ndisc_opt_addr_data(ndopts.nd_opts_src_lladdr,
> - skb->dev);
> + skb->dev,
> + skb->dev->addr_len);
> if (!lladdr) {
> ND_PRINTK(2, warn,
> "RA: invalid link-layer address length\n");
> diff --git a/net/ipv6/route.c b/net/ipv6/route.c
> index ed44663..cc180b3 100644
> --- a/net/ipv6/route.c
> +++ b/net/ipv6/route.c
> @@ -2157,7 +2157,7 @@ static void rt6_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_bu
> lladdr = NULL;
> if (ndopts.nd_opts_tgt_lladdr) {
> lladdr = ndisc_opt_addr_data(ndopts.nd_opts_tgt_lladdr,
> - skb->dev);
> + skb->dev, skb->dev->addr_len);
> if (!lladdr) {
> net_dbg_ratelimited("rt6_redirect: invalid link-layer address length\n");
> return;
Reviewed-by: Stefan Schmidt<stefan@osg•samsung.com>
regards
Stefan Schmidt
next prev parent reply other threads:[~2016-05-03 18:17 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
[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 [this message]
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
[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
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
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