[SCTP]: ICMP6 per-device changes for sctp.

net/sctp/ipv6.c

@@ -92,6 +92,7 @@ extern struct notifier_block sctp_inetaddr_notifier;
 void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 		 int type, int code, int offset, __u32 info)
 {
+	struct inet6_dev *idev;
 	struct ipv6hdr *iph = (struct ipv6hdr *)skb->data;
 	struct sctphdr *sh = (struct sctphdr *)(skb->data + offset);
 	struct sock *sk;
@@ -102,6 +103,8 @@ void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 	char *saveip, *savesctp;
 	int err;
 
+	idev = in6_dev_get(skb->dev);
+
 	/* Fix up skb to look at the embedded net header. */
 	saveip = skb->nh.raw;
 	savesctp  = skb->h.raw;
@@ -112,8 +115,8 @@ void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 	skb->nh.raw = saveip;
 	skb->h.raw = savesctp;
 	if (!sk) {
-		ICMP6_INC_STATS_BH(Icmp6InErrors);
-		return;
+		ICMP6_INC_STATS_BH(idev, Icmp6InErrors);
+		goto out;
 	}
 
 	/* Warning:  The sock lock is held.  Remember to call 
@@ -139,6 +142,9 @@ void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 
 out_unlock:
 	sctp_err_finish(sk, ep, asoc);
+out:
+	if (likely(idev != NULL))
+		in6_dev_put(idev);
 }
 
 /* Based on tcp_v6_xmit() in tcp_ipv6.c. */