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From: Alexander Aring <aar@pengutronix.de>
To: linux-wpan@vger.kernel.org
Cc: kernel@pengutronix.de, jukka.rissanen@linux.intel.com,
	hannes@stressinduktion.org, stefan@osg.samsung.com,
	mcr@sandelman.ca, werner@almesberger.net,
	Alexander Aring <aar@pengutronix.de>
Subject: [RFC bluetooth-next 15/19] ndisc: add addr_len parameter to ndisc_opt_addr_data
Date: Tue, 22 Mar 2016 14:15:11 +0100	[thread overview]
Message-ID: <1458652515-7862-16-git-send-email-aar@pengutronix.de> (raw)
In-Reply-To: <1458652515-7862-1-git-send-email-aar@pengutronix.de>

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.

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;
-- 
2.7.4


  parent reply	other threads:[~2016-03-22 13:15 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-22 13:14 [RFC bluetooth-next 00/19] 6lowpan: l2 neighbour data and short address Alexander Aring
2016-03-22 13:14 ` [RFC bluetooth-next 01/19] ieee802154: cleanups for ieee802154.h Alexander Aring
2016-03-23  9:59   ` Stefan Schmidt
2016-03-22 13:14 ` [RFC bluetooth-next 02/19] ieee802154: add short address helpers Alexander Aring
2016-03-23  9:59   ` Stefan Schmidt
2016-03-22 13:14 ` [RFC bluetooth-next 03/19] nl802154: avoid address change while running lowpan Alexander Aring
2016-03-23  9:59   ` Stefan Schmidt
2016-03-22 13:15 ` [RFC bluetooth-next 04/19] ieee802154: 6lowpan: fix short addr hash Alexander Aring
2016-03-23  9:58   ` Stefan Schmidt
2016-03-22 13:15 ` [RFC bluetooth-next 05/19] 6lowpan: change naming for lowpan private data Alexander Aring
2016-03-22 13:15 ` [RFC bluetooth-next 06/19] 6lowpan: move lowpan_802154_dev to 6lowpan Alexander Aring
2016-03-23 10:08   ` Stefan Schmidt
2016-03-22 13:15 ` [RFC bluetooth-next 07/19] 6lowpan: iphc: rename add lowpan prefix Alexander Aring
2016-03-23 10:09   ` Stefan Schmidt
2016-04-08 17:36     ` Marcel Holtmann
2016-04-11 17:00       ` Stefan Schmidt
2016-03-22 13:15 ` [RFC bluetooth-next 08/19] 6lowpan: iphc: remove unnecessary zero data Alexander Aring
2016-03-22 13:15 ` [RFC bluetooth-next 09/19] 6lowpan: move eui64 uncompress function Alexander Aring
2016-03-22 13:15 ` [RFC bluetooth-next 10/19] 6lowpan: add lowpan_is_ll function Alexander Aring
2016-03-22 13:15 ` [RFC bluetooth-next 11/19] 6lowpan: move mac802154 header Alexander Aring
2016-03-22 13:15 ` [RFC bluetooth-next 12/19] 6lowpan: add private neighbour data Alexander Aring
2016-03-22 13:15 ` [RFC bluetooth-next 13/19] addrconf: add 802.15.4 short addr slaac Alexander Aring
2016-03-23 10:50   ` Hannes Frederic Sowa
2016-04-05  8:20     ` Alexander Aring
2016-03-22 13:15 ` [RFC bluetooth-next 14/19] ndisc: add addr_len parameter to ndisc_opt_addr_space Alexander Aring
2016-03-22 13:15 ` Alexander Aring [this message]
2016-03-22 13:15 ` [RFC bluetooth-next 16/19] ndisc: add addr_len parameter to ndisc_fill_addr_option Alexander Aring
2016-03-22 13:15 ` [RFC bluetooth-next 17/19] ndisc: add short address to ndisc opts parsing Alexander Aring
2016-03-22 13:15 ` [RFC bluetooth-next 18/19] ndisc: add support for short address option Alexander Aring
2016-03-22 13:15 ` [RFC bluetooth-next 19/19] 6lowpan: add support for 802.15.4 short addr handling Alexander Aring

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