Contributors: 16
Author Tokens Token Proportion Commits Commit Proportion
Harald Welte 136 32.46% 4 12.12%
Pablo Neira Ayuso 88 21.00% 5 15.15%
Patrick McHardy 52 12.41% 5 15.15%
Linus Torvalds (pre-git) 44 10.50% 5 15.15%
Gao Feng 38 9.07% 3 9.09%
Eric Leblond 13 3.10% 1 3.03%
Joe Perches 10 2.39% 1 3.03%
Vishwanath Pai 9 2.15% 1 3.03%
Eric Dumazet 6 1.43% 1 3.03%
Hans Schillstrom 5 1.19% 1 3.03%
Liping Zhang 5 1.19% 1 3.03%
Michal Kubeček 5 1.19% 1 3.03%
Jan Engelhardt 5 1.19% 1 3.03%
Herbert Xu 1 0.24% 1 3.03%
Greg Kroah-Hartman 1 0.24% 1 3.03%
Linus Torvalds 1 0.24% 1 3.03%
Total 419 33


/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NF_LOG_H
#define _NF_LOG_H

#include <linux/netfilter.h>
#include <linux/netfilter/nf_log.h>

/* Log tcp sequence, tcp options, ip options and uid owning local socket */
#define NF_LOG_DEFAULT_MASK	0x0f

/* This flag indicates that copy_len field in nf_loginfo is set */
#define NF_LOG_F_COPY_LEN	0x1

enum nf_log_type {
	NF_LOG_TYPE_LOG		= 0,
	NF_LOG_TYPE_ULOG,
	NF_LOG_TYPE_MAX
};

struct nf_loginfo {
	u_int8_t type;
	union {
		struct {
			/* copy_len will be used iff you set
			 * NF_LOG_F_COPY_LEN in flags
			 */
			u_int32_t copy_len;
			u_int16_t group;
			u_int16_t qthreshold;
			u_int16_t flags;
		} ulog;
		struct {
			u_int8_t level;
			u_int8_t logflags;
		} log;
	} u;
};

typedef void nf_logfn(struct net *net,
		      u_int8_t pf,
		      unsigned int hooknum,
		      const struct sk_buff *skb,
		      const struct net_device *in,
		      const struct net_device *out,
		      const struct nf_loginfo *li,
		      const char *prefix);

struct nf_logger {
	char			*name;
	enum nf_log_type	type;
	nf_logfn 		*logfn;
	struct module		*me;
};

/* sysctl_nf_log_all_netns - allow LOG target in all network namespaces */
extern int sysctl_nf_log_all_netns;

/* Function to register/unregister log function. */
int nf_log_register(u_int8_t pf, struct nf_logger *logger);
void nf_log_unregister(struct nf_logger *logger);

int nf_log_set(struct net *net, u_int8_t pf, const struct nf_logger *logger);
void nf_log_unset(struct net *net, const struct nf_logger *logger);

int nf_log_bind_pf(struct net *net, u_int8_t pf,
		   const struct nf_logger *logger);
void nf_log_unbind_pf(struct net *net, u_int8_t pf);

int nf_logger_find_get(int pf, enum nf_log_type type);
void nf_logger_put(int pf, enum nf_log_type type);

#define MODULE_ALIAS_NF_LOGGER(family, type) \
	MODULE_ALIAS("nf-logger-" __stringify(family) "-" __stringify(type))

/* Calls the registered backend logging function */
__printf(8, 9)
void nf_log_packet(struct net *net,
		   u_int8_t pf,
		   unsigned int hooknum,
		   const struct sk_buff *skb,
		   const struct net_device *in,
		   const struct net_device *out,
		   const struct nf_loginfo *li,
		   const char *fmt, ...);

__printf(8, 9)
void nf_log_trace(struct net *net,
		  u_int8_t pf,
		  unsigned int hooknum,
		  const struct sk_buff *skb,
		  const struct net_device *in,
		  const struct net_device *out,
		  const struct nf_loginfo *li,
		  const char *fmt, ...);

struct nf_log_buf;

struct nf_log_buf *nf_log_buf_open(void);
__printf(2, 3) int nf_log_buf_add(struct nf_log_buf *m, const char *f, ...);
void nf_log_buf_close(struct nf_log_buf *m);
#endif /* _NF_LOG_H */