#ifndef _NF_LOG_H #define _NF_LOG_H #include /* those NF_LOG_* defines and struct nf_loginfo are legacy definitios that will * disappear once iptables is replaced with pkttables. Please DO NOT use them * for any new code! */ #define NF_LOG_TCPSEQ 0x01 /* Log TCP sequence numbers */ #define NF_LOG_TCPOPT 0x02 /* Log TCP options */ #define NF_LOG_IPOPT 0x04 /* Log IP options */ #define NF_LOG_UID 0x08 /* Log UID owning local socket */ #define NF_LOG_MASK 0x0f 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 { u_int32_t copy_len; u_int16_t group; u_int16_t qthreshold; } 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; }; /* 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); void 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); void nf_logger_request_module(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); /* common logging functions */ int nf_log_dump_udp_header(struct nf_log_buf *m, const struct sk_buff *skb, u8 proto, int fragment, unsigned int offset); int nf_log_dump_tcp_header(struct nf_log_buf *m, const struct sk_buff *skb, u8 proto, int fragment, unsigned int offset, unsigned int logflags); void nf_log_dump_sk_uid_gid(struct nf_log_buf *m, struct sock *sk); void nf_log_dump_packet_common(struct nf_log_buf *m, 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 *loginfo, const char *prefix); #endif /* _NF_LOG_H */