1 #include <linux/types.h>
2 #include <net/net_namespace.h>
3 #include <linux/netfilter/nf_conntrack_common.h>
4 #include <linux/netfilter/nf_conntrack_tuple_common.h>
5 #include <net/netfilter/nf_conntrack.h>
6 #include <net/netfilter/nf_conntrack_extend.h>
8 #include <uapi/linux/netfilter/xt_connlabel.h>
10 #define NF_CT_LABELS_MAX_SIZE ((XT_CONNLABEL_MAXBIT + 1) / BITS_PER_BYTE)
12 struct nf_conn_labels
{
17 static inline struct nf_conn_labels
*nf_ct_labels_find(const struct nf_conn
*ct
)
19 #ifdef CONFIG_NF_CONNTRACK_LABELS
20 return nf_ct_ext_find(ct
, NF_CT_EXT_LABELS
);
26 static inline struct nf_conn_labels
*nf_ct_labels_ext_add(struct nf_conn
*ct
)
28 #ifdef CONFIG_NF_CONNTRACK_LABELS
29 struct nf_conn_labels
*cl_ext
;
30 struct net
*net
= nf_ct_net(ct
);
33 words
= ACCESS_ONCE(net
->ct
.label_words
);
37 cl_ext
= nf_ct_ext_add_length(ct
, NF_CT_EXT_LABELS
,
38 words
* sizeof(long), GFP_ATOMIC
);
40 cl_ext
->words
= words
;
48 int nf_connlabel_set(struct nf_conn
*ct
, u16 bit
);
50 int nf_connlabels_replace(struct nf_conn
*ct
,
51 const u32
*data
, const u32
*mask
, unsigned int words
);
53 #ifdef CONFIG_NF_CONNTRACK_LABELS
54 int nf_conntrack_labels_init(void);
55 void nf_conntrack_labels_fini(void);
56 int nf_connlabels_get(struct net
*net
, unsigned int bit
);
57 void nf_connlabels_put(struct net
*net
);
59 static inline int nf_conntrack_labels_init(void) { return 0; }
60 static inline void nf_conntrack_labels_fini(void) {}
61 static inline int nf_connlabels_get(struct net
*net
, unsigned int bit
) { return 0; }
62 static inline void nf_connlabels_put(struct net
*net
) {}
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