Contributors: 11
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Yasuyuki Kozakai |
232 |
63.91% |
3 |
14.29% |
| Changli Gao |
49 |
13.50% |
2 |
9.52% |
| Pablo Neira Ayuso |
26 |
7.16% |
3 |
14.29% |
| Patrick McHardy |
26 |
7.16% |
3 |
14.29% |
| Florian Westphal |
16 |
4.41% |
4 |
19.05% |
| Krzysztof Piotr Oledzki |
5 |
1.38% |
1 |
4.76% |
| Tejun Heo |
3 |
0.83% |
1 |
4.76% |
| Michal Kubeček |
3 |
0.83% |
1 |
4.76% |
| Liping Zhang |
1 |
0.28% |
1 |
4.76% |
| Greg Kroah-Hartman |
1 |
0.28% |
1 |
4.76% |
| Holger Eitzenberger |
1 |
0.28% |
1 |
4.76% |
| Total |
363 |
|
21 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NF_CONNTRACK_EXTEND_H
#define _NF_CONNTRACK_EXTEND_H
#include <linux/slab.h>
#include <net/netfilter/nf_conntrack.h>
enum nf_ct_ext_id {
NF_CT_EXT_HELPER,
#if defined(CONFIG_NF_NAT) || defined(CONFIG_NF_NAT_MODULE)
NF_CT_EXT_NAT,
#endif
NF_CT_EXT_SEQADJ,
NF_CT_EXT_ACCT,
#ifdef CONFIG_NF_CONNTRACK_EVENTS
NF_CT_EXT_ECACHE,
#endif
#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
NF_CT_EXT_TSTAMP,
#endif
#ifdef CONFIG_NF_CONNTRACK_TIMEOUT
NF_CT_EXT_TIMEOUT,
#endif
#ifdef CONFIG_NF_CONNTRACK_LABELS
NF_CT_EXT_LABELS,
#endif
#if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY)
NF_CT_EXT_SYNPROXY,
#endif
NF_CT_EXT_NUM,
};
#define NF_CT_EXT_HELPER_TYPE struct nf_conn_help
#define NF_CT_EXT_NAT_TYPE struct nf_conn_nat
#define NF_CT_EXT_SEQADJ_TYPE struct nf_conn_seqadj
#define NF_CT_EXT_ACCT_TYPE struct nf_conn_acct
#define NF_CT_EXT_ECACHE_TYPE struct nf_conntrack_ecache
#define NF_CT_EXT_TSTAMP_TYPE struct nf_conn_tstamp
#define NF_CT_EXT_TIMEOUT_TYPE struct nf_conn_timeout
#define NF_CT_EXT_LABELS_TYPE struct nf_conn_labels
#define NF_CT_EXT_SYNPROXY_TYPE struct nf_conn_synproxy
/* Extensions: optional stuff which isn't permanently in struct. */
struct nf_ct_ext {
struct rcu_head rcu;
u8 offset[NF_CT_EXT_NUM];
u8 len;
char data[0];
};
static inline bool __nf_ct_ext_exist(const struct nf_ct_ext *ext, u8 id)
{
return !!ext->offset[id];
}
static inline bool nf_ct_ext_exist(const struct nf_conn *ct, u8 id)
{
return (ct->ext && __nf_ct_ext_exist(ct->ext, id));
}
static inline void *__nf_ct_ext_find(const struct nf_conn *ct, u8 id)
{
if (!nf_ct_ext_exist(ct, id))
return NULL;
return (void *)ct->ext + ct->ext->offset[id];
}
#define nf_ct_ext_find(ext, id) \
((id##_TYPE *)__nf_ct_ext_find((ext), (id)))
/* Destroy all relationships */
void nf_ct_ext_destroy(struct nf_conn *ct);
/* Free operation. If you want to free a object referred from private area,
* please implement __nf_ct_ext_free() and call it.
*/
static inline void nf_ct_ext_free(struct nf_conn *ct)
{
if (ct->ext)
kfree_rcu(ct->ext, rcu);
}
/* Add this type, returns pointer to data or NULL. */
void *nf_ct_ext_add(struct nf_conn *ct, enum nf_ct_ext_id id, gfp_t gfp);
struct nf_ct_ext_type {
/* Destroys relationships (can be NULL). */
void (*destroy)(struct nf_conn *ct);
enum nf_ct_ext_id id;
/* Length and min alignment. */
u8 len;
u8 align;
};
int nf_ct_extend_register(const struct nf_ct_ext_type *type);
void nf_ct_extend_unregister(const struct nf_ct_ext_type *type);
#endif /* _NF_CONNTRACK_EXTEND_H */