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 (file)
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -378,7 +378,7 @@ enum ip_conntrack_info;
 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 (file)
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -2162,7 +2162,7 @@ ctnetlink_glue_build_size(const struct nf_conn *ct)
               ;
 }
 
-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;