Release 4.7 include/net/netfilter/nf_conntrack_helper.h
/*
* connection tracking helpers.
*
* 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
* - generalize L3 protocol dependent part.
*
* Derived from include/linux/netfiter_ipv4/ip_conntrack_helper.h
*/
#ifndef _NF_CONNTRACK_HELPER_H
#define _NF_CONNTRACK_HELPER_H
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_extend.h>
#include <net/netfilter/nf_conntrack_expect.h>
struct module;
enum nf_ct_helper_flags {
NF_CT_HELPER_F_USERSPACE = (1 << 0),
NF_CT_HELPER_F_CONFIGURED = (1 << 1),
};
#define NF_CT_HELPER_NAME_LEN 16
struct nf_conntrack_helper {
struct hlist_node hnode; /* Internal use. */
char name[NF_CT_HELPER_NAME_LEN]; /* name of the module */
struct module *me; /* pointer to self */
const struct nf_conntrack_expect_policy *expect_policy;
/* length of internal data, ie. sizeof(struct nf_ct_*_master) */
size_t data_len;
/* Tuple of things we will help (compared against server response) */
struct nf_conntrack_tuple tuple;
/* Function to call when data passes; return verdict, or -1 to
invalidate. */
int (*help)(struct sk_buff *skb,
unsigned int protoff,
struct nf_conn *ct,
enum ip_conntrack_info conntrackinfo);
void (*destroy)(struct nf_conn *ct);
int (*from_nlattr)(struct nlattr *attr, struct nf_conn *ct);
int (*to_nlattr)(struct sk_buff *skb, const struct nf_conn *ct);
unsigned int expect_class_max;
unsigned int flags;
unsigned int queue_num; /* For user-space helpers. */
};
struct nf_conntrack_helper *__nf_conntrack_helper_find(const char *name,
u16 l3num, u8 protonum);
struct nf_conntrack_helper *nf_conntrack_helper_try_module_get(const char *name,
u16 l3num,
u8 protonum);
int nf_conntrack_helper_register(struct nf_conntrack_helper *);
void nf_conntrack_helper_unregister(struct nf_conntrack_helper *);
struct nf_conn_help *nf_ct_helper_ext_add(struct nf_conn *ct,
struct nf_conntrack_helper *helper,
gfp_t gfp);
int __nf_ct_try_assign_helper(struct nf_conn *ct, struct nf_conn *tmpl,
gfp_t flags);
void nf_ct_helper_destroy(struct nf_conn *ct);
static inline struct nf_conn_help *nfct_help(const struct nf_conn *ct)
{
return nf_ct_ext_find(ct, NF_CT_EXT_HELPER);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| yasuyuki kozakai | yasuyuki kozakai | 23 | 100.00% | 1 | 100.00% |
| Total | 23 | 100.00% | 1 | 100.00% |
static inline void *nfct_help_data(const struct nf_conn *ct)
{
struct nf_conn_help *help;
help = nf_ct_ext_find(ct, NF_CT_EXT_HELPER);
return (void *)help->data;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pablo neira ayuso | pablo neira ayuso | 37 | 100.00% | 1 | 100.00% |
| Total | 37 | 100.00% | 1 | 100.00% |
int nf_conntrack_helper_pernet_init(struct net *net);
void nf_conntrack_helper_pernet_fini(struct net *net);
int nf_conntrack_helper_init(void);
void nf_conntrack_helper_fini(void);
int nf_conntrack_broadcast_help(struct sk_buff *skb, unsigned int protoff,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int timeout);
struct nf_ct_helper_expectfn {
struct list_head head;
const char *name;
void (*expectfn)(struct nf_conn *ct, struct nf_conntrack_expect *exp);
};
__printf(3,4)
void nf_ct_helper_log(struct sk_buff *skb, const struct nf_conn *ct,
const char *fmt, ...);
void nf_ct_helper_expectfn_register(struct nf_ct_helper_expectfn *n);
void nf_ct_helper_expectfn_unregister(struct nf_ct_helper_expectfn *n);
struct nf_ct_helper_expectfn *
nf_ct_helper_expectfn_find_by_name(const char *name);
struct nf_ct_helper_expectfn *
nf_ct_helper_expectfn_find_by_symbol(const void *symbol);
extern struct hlist_head *nf_ct_helper_hash;
extern unsigned int nf_ct_helper_hsize;
#endif /*_NF_CONNTRACK_HELPER_H*/
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pablo neira ayuso | pablo neira ayuso | 246 | 50.10% | 9 | 33.33% |
| yasuyuki kozakai | yasuyuki kozakai | 106 | 21.59% | 2 | 7.41% |
| patrick mchardy | patrick mchardy | 76 | 15.48% | 10 | 37.04% |
| jiri olsa | jiri olsa | 26 | 5.30% | 1 | 3.70% |
| gao feng | gao feng | 14 | 2.85% | 1 | 3.70% |
| martin josefsson | martin josefsson | 10 | 2.04% | 1 | 3.70% |
| eric leblond | eric leblond | 8 | 1.63% | 1 | 3.70% |
| holger eitzenberger | holger eitzenberger | 4 | 0.81% | 1 | 3.70% |
| herbert xu | herbert xu | 1 | 0.20% | 1 | 3.70% |
| Total | 491 | 100.00% | 27 | 100.00% |
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