diff options
Diffstat (limited to 'net/ipv6/ndisc.c')
| -rw-r--r-- | net/ipv6/ndisc.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index c574ebce3fb5..8d817018c188 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1512,8 +1512,7 @@ static void ndisc_redirect_rcv(struct sk_buff *skb) } } -void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh, - const struct in6_addr *target) +void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target) { struct net_device *dev = skb->dev; struct net *net = dev_net(dev); @@ -1571,6 +1570,13 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh, goto release; if (dev->addr_len) { + struct neighbour *neigh = dst_neigh_lookup(skb_dst(skb), target); + if (!neigh) { + ND_PRINTK2(KERN_WARNING + "ICMPv6 Redirect: no neigh for target address\n"); + goto release; + } + read_lock_bh(&neigh->lock); if (neigh->nud_state & NUD_VALID) { memcpy(ha_buf, neigh->ha, dev->addr_len); @@ -1579,6 +1585,8 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh, len += ndisc_opt_addr_space(dev); } else read_unlock_bh(&neigh->lock); + + neigh_release(neigh); } rd_len = min_t(unsigned int, |