[PATCH] Fix CTA_PROTO_NUM attribute size in ctnetlink

CTA_PROTO_NUM is a u_int8_t.

Based on oryginal patch by Patrick McHardy <kaber@trash.net>
Signed-off-by: Krzysztof Piotr Oledzki <ole@ans.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

net/ipv4/netfilter/ip_conntrack_netlink.c

@@ -506,7 +506,7 @@ ctnetlink_parse_tuple_ip(struct nfattr *attr, struct ip_conntrack_tuple *tuple)
 }
 
 static const int cta_min_proto[CTA_PROTO_MAX] = {
-	[CTA_PROTO_NUM-1]	= sizeof(u_int16_t),
+	[CTA_PROTO_NUM-1]	= sizeof(u_int8_t),
 	[CTA_PROTO_SRC_PORT-1]	= sizeof(u_int16_t),
 	[CTA_PROTO_DST_PORT-1]	= sizeof(u_int16_t),
 	[CTA_PROTO_ICMP_TYPE-1]	= sizeof(u_int8_t),
@@ -532,7 +532,7 @@ ctnetlink_parse_tuple_proto(struct nfattr *attr,
 
 	if (!tb[CTA_PROTO_NUM-1])
 		return -EINVAL;
-	tuple->dst.protonum = *(u_int16_t *)NFA_DATA(tb[CTA_PROTO_NUM-1]);
+	tuple->dst.protonum = *(u_int8_t *)NFA_DATA(tb[CTA_PROTO_NUM-1]);
 
 	proto = ip_conntrack_proto_find_get(tuple->dst.protonum);