This patch makes the address length as argument for the
ndisc_opt_addr_space function. This is necessary to handle addresses
which don't use dev->addr_len as address length.
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Alexey Kuznetsov <kuznet@xxxxxxxxxxxxx>
Cc: James Morris <jmorris@xxxxxxxxx>
Cc: Hideaki YOSHIFUJI <yoshfuji@xxxxxxxxxxxxxx>
Cc: Patrick McHardy <kaber@xxxxxxxxx>
Signed-off-by: Alexander Aring <aar@xxxxxxxxxxxxxx>
---
include/net/ndisc.h | 8 ++++----
net/ipv6/ndisc.c | 10 +++++-----
2 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/include/net/ndisc.h b/include/net/ndisc.h
index 2d8edaa..ef43e88 100644
--- a/include/net/ndisc.h
+++ b/include/net/ndisc.h
@@ -127,10 +127,10 @@ static inline int ndisc_addr_option_pad(unsigned short type)
}
}
-static inline int ndisc_opt_addr_space(struct net_device *dev)
+static inline int ndisc_opt_addr_space(struct net_device *dev,
+ unsigned char addr_len)
{
- return NDISC_OPT_SPACE(dev->addr_len +
- ndisc_addr_option_pad(dev->type));
+ return NDISC_OPT_SPACE(addr_len + ndisc_addr_option_pad(dev->type));
}
static inline u8 *ndisc_opt_addr_data(struct nd_opt_hdr *p,
@@ -139,7 +139,7 @@ static inline u8 *ndisc_opt_addr_data(struct nd_opt_hdr *p,
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))
+ if (lladdrlen != ndisc_opt_addr_space(dev, dev->addr_len))
return NULL;
return lladdr + prepad;
}
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index c245895..69e20e3 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -154,7 +154,7 @@ static void ndisc_fill_addr_option(struct sk_buff *skb, int type, void *data)
{
int pad = ndisc_addr_option_pad(skb->dev->type);
int data_len = skb->dev->addr_len;
- int space = ndisc_opt_addr_space(skb->dev);
+ int space = ndisc_opt_addr_space(skb->dev, skb->dev->addr_len);
u8 *opt = skb_put(skb, space);
opt[0] = type;
@@ -509,7 +509,7 @@ void ndisc_send_na(struct net_device *dev, const struct in6_addr *daddr,
if (!dev->addr_len)
inc_opt = 0;
if (inc_opt)
- optlen += ndisc_opt_addr_space(dev);
+ optlen += ndisc_opt_addr_space(dev, dev->addr_len);
skb = ndisc_alloc_skb(dev, sizeof(*msg) + optlen);
if (!skb)
@@ -574,7 +574,7 @@ void ndisc_send_ns(struct net_device *dev, const struct in6_addr *solicit,
if (ipv6_addr_any(saddr))
inc_opt = false;
if (inc_opt)
- optlen += ndisc_opt_addr_space(dev);
+ optlen += ndisc_opt_addr_space(dev, dev->addr_len);
skb = ndisc_alloc_skb(dev, sizeof(*msg) + optlen);
if (!skb)
@@ -626,7 +626,7 @@ void ndisc_send_rs(struct net_device *dev, const struct in6_addr *saddr,
}
#endif
if (send_sllao)
- optlen += ndisc_opt_addr_space(dev);
+ optlen += ndisc_opt_addr_space(dev, dev->addr_len);
skb = ndisc_alloc_skb(dev, sizeof(*msg) + optlen);
if (!skb)
@@ -1563,7 +1563,7 @@ void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target)
memcpy(ha_buf, neigh->ha, dev->addr_len);
read_unlock_bh(&neigh->lock);
ha = ha_buf;
- optlen += ndisc_opt_addr_space(dev);
+ optlen += ndisc_opt_addr_space(dev, dev->addr_len);
} else
read_unlock_bh(&neigh->lock);
--
2.8.0
--
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