X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=net%2Fipv4%2Fnetfilter%2Fip_conntrack_tftp.c;h=ef56de2eff0c71edc8dd8f29c1d2e431dc041f32;hb=337fbc4166967a72c3cc71c597bdde7e6a8633ab;hp=fe0b634dd37761fd15d341698cf45c0158485631;hpb=468ec44bd5a863736d955f78b8c38896f26864a1;p=deliverable%2Flinux.git

diff --git a/net/ipv4/netfilter/ip_conntrack_tftp.c b/net/ipv4/netfilter/ip_conntrack_tftp.c
index fe0b634dd377..ef56de2eff0c 100644
--- a/net/ipv4/netfilter/ip_conntrack_tftp.c
+++ b/net/ipv4/netfilter/ip_conntrack_tftp.c
@@ -50,6 +50,7 @@ static int tftp_help(struct sk_buff **pskb,
 	struct tftphdr _tftph, *tfh;
 	struct ip_conntrack_expect *exp;
 	unsigned int ret = NF_ACCEPT;
+	typeof(ip_nat_tftp_hook) ip_nat_tftp;
 
 	tfh = skb_header_pointer(*pskb,
 				 (*pskb)->nh.iph->ihl*4+sizeof(struct udphdr),
@@ -81,8 +82,9 @@ static int tftp_help(struct sk_buff **pskb,
 		DEBUGP("expect: ");
 		DUMP_TUPLE(&exp->tuple);
 		DUMP_TUPLE(&exp->mask);
-		if (ip_nat_tftp_hook)
-			ret = ip_nat_tftp_hook(pskb, ctinfo, exp);
+		ip_nat_tftp = rcu_dereference(ip_nat_tftp_hook);
+		if (ip_nat_tftp)
+			ret = ip_nat_tftp(pskb, ctinfo, exp);
 		else if (ip_conntrack_expect_related(exp) != 0)
 			ret = NF_DROP;
 		ip_conntrack_expect_put(exp);