netfilter: ctnetlink: add const qualifier to nfnl_hook.get_ct
get_ct as is and will not update its skb argument, and users of
nfnl_ct_hook is currently only nfqueue, we can add const qualifier.
Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp>
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 27747de..edb3dc3 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -378,7 +378,7 @@
struct nlattr;
struct nfnl_ct_hook {
- struct nf_conn *(*get_ct)(struct sk_buff *skb,
+ struct nf_conn *(*get_ct)(const struct sk_buff *skb,
enum ip_conntrack_info *ctinfo);
size_t (*build_size)(const struct nf_conn *ct);
int (*build)(struct sk_buff *skb, struct nf_conn *ct,
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 71d6ada..9f52729 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -2162,7 +2162,7 @@
;
}
-static struct nf_conn *ctnetlink_glue_get_ct(struct sk_buff *skb,
+static struct nf_conn *ctnetlink_glue_get_ct(const struct sk_buff *skb,
enum ip_conntrack_info *ctinfo)
{
struct nf_conn *ct;