Contributors: 10
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Pablo Neira Ayuso |
271 |
51.23% |
18 |
46.15% |
| Harald Welte |
137 |
25.90% |
5 |
12.82% |
| Patrick McHardy |
60 |
11.34% |
8 |
20.51% |
| Alexey Dobriyan |
25 |
4.73% |
1 |
2.56% |
| Florian Westphal |
22 |
4.16% |
2 |
5.13% |
| Gao Feng |
5 |
0.95% |
1 |
2.56% |
| David Howells |
4 |
0.76% |
1 |
2.56% |
| Yaowei Bai |
3 |
0.57% |
1 |
2.56% |
| Eric Dumazet |
1 |
0.19% |
1 |
2.56% |
| Greg Kroah-Hartman |
1 |
0.19% |
1 |
2.56% |
| Total |
529 |
|
39 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NFNETLINK_H
#define _NFNETLINK_H
#include <linux/netlink.h>
#include <linux/capability.h>
#include <net/netlink.h>
#include <uapi/linux/netfilter/nfnetlink.h>
struct nfnl_info {
struct net *net;
struct sock *sk;
const struct nlmsghdr *nlh;
const struct nfgenmsg *nfmsg;
struct netlink_ext_ack *extack;
};
enum nfnl_callback_type {
NFNL_CB_UNSPEC = 0,
NFNL_CB_MUTEX,
NFNL_CB_RCU,
NFNL_CB_BATCH,
};
struct nfnl_callback {
int (*call)(struct sk_buff *skb, const struct nfnl_info *info,
const struct nlattr * const cda[]);
const struct nla_policy *policy;
enum nfnl_callback_type type;
__u16 attr_count;
};
enum nfnl_abort_action {
NFNL_ABORT_NONE = 0,
NFNL_ABORT_AUTOLOAD,
NFNL_ABORT_VALIDATE,
};
struct nfnetlink_subsystem {
const char *name;
__u8 subsys_id; /* nfnetlink subsystem ID */
__u8 cb_count; /* number of callbacks */
const struct nfnl_callback *cb; /* callback for individual types */
struct module *owner;
int (*commit)(struct net *net, struct sk_buff *skb);
int (*abort)(struct net *net, struct sk_buff *skb,
enum nfnl_abort_action action);
bool (*valid_genid)(struct net *net, u32 genid);
};
int nfnetlink_subsys_register(const struct nfnetlink_subsystem *n);
int nfnetlink_subsys_unregister(const struct nfnetlink_subsystem *n);
int nfnetlink_has_listeners(struct net *net, unsigned int group);
int nfnetlink_send(struct sk_buff *skb, struct net *net, u32 portid,
unsigned int group, int echo, gfp_t flags);
int nfnetlink_set_err(struct net *net, u32 portid, u32 group, int error);
int nfnetlink_unicast(struct sk_buff *skb, struct net *net, u32 portid);
void nfnetlink_broadcast(struct net *net, struct sk_buff *skb, __u32 portid,
__u32 group, gfp_t allocation);
static inline u16 nfnl_msg_type(u8 subsys, u8 msg_type)
{
return subsys << 8 | msg_type;
}
static inline void nfnl_fill_hdr(struct nlmsghdr *nlh, u8 family, u8 version,
__be16 res_id)
{
struct nfgenmsg *nfmsg;
nfmsg = nlmsg_data(nlh);
nfmsg->nfgen_family = family;
nfmsg->version = version;
nfmsg->res_id = res_id;
}
static inline struct nlmsghdr *nfnl_msg_put(struct sk_buff *skb, u32 portid,
u32 seq, int type, int flags,
u8 family, u8 version,
__be16 res_id)
{
struct nlmsghdr *nlh;
nlh = nlmsg_put(skb, portid, seq, type, sizeof(struct nfgenmsg), flags);
if (!nlh)
return NULL;
nfnl_fill_hdr(nlh, family, version, res_id);
return nlh;
}
void nfnl_lock(__u8 subsys_id);
void nfnl_unlock(__u8 subsys_id);
#ifdef CONFIG_PROVE_LOCKING
bool lockdep_nfnl_is_held(__u8 subsys_id);
#else
static inline bool lockdep_nfnl_is_held(__u8 subsys_id)
{
return true;
}
#endif /* CONFIG_PROVE_LOCKING */
#define MODULE_ALIAS_NFNL_SUBSYS(subsys) \
MODULE_ALIAS("nfnetlink-subsys-" __stringify(subsys))
#endif /* _NFNETLINK_H */