include/net/netfilter/nf_log.h

   1 #ifndef _NF_LOG_H
   2 #define _NF_LOG_H
   3
   4 /* those NF_LOG_* defines and struct nf_loginfo are legacy definitios that will
   5  * disappear once iptables is replaced with pkttables.  Please DO NOT use them
   6  * for any new code! */
   7 #define NF_LOG_TCPSEQ           0x01    /* Log TCP sequence numbers */
   8 #define NF_LOG_TCPOPT           0x02    /* Log TCP options */
   9 #define NF_LOG_IPOPT            0x04    /* Log IP options */
  10 #define NF_LOG_UID              0x08    /* Log UID owning local socket */
  11 #define NF_LOG_MASK             0x0f
  12
  13 #define NF_LOG_TYPE_LOG         0x01
  14 #define NF_LOG_TYPE_ULOG        0x02
  15
  16 struct nf_loginfo {
  17         u_int8_t type;
  18         union {
  19                 struct {
  20                         u_int32_t copy_len;
  21                         u_int16_t group;
  22                         u_int16_t qthreshold;
  23                 } ulog;
  24                 struct {
  25                         u_int8_t level;
  26                         u_int8_t logflags;
  27                 } log;
  28         } u;
  29 };
  30
  31 typedef void nf_logfn(u_int8_t pf,
  32                       unsigned int hooknum,
  33                       const struct sk_buff *skb,
  34                       const struct net_device *in,
  35                       const struct net_device *out,
  36                       const struct nf_loginfo *li,
  37                       const char *prefix);
  38
  39 struct nf_logger {
  40         struct module   *me;
  41         nf_logfn        *logfn;
  42         char            *name;
  43 };
  44
  45 /* Function to register/unregister log function. */
  46 int nf_log_register(u_int8_t pf, const struct nf_logger *logger);
  47 void nf_log_unregister(const struct nf_logger *logger);
  48 void nf_log_unregister_pf(u_int8_t pf);
  49
  50 /* Calls the registered backend logging function */
  51 void nf_log_packet(u_int8_t pf,
  52                    unsigned int hooknum,
  53                    const struct sk_buff *skb,
  54                    const struct net_device *in,
  55                    const struct net_device *out,
  56                    const struct nf_loginfo *li,
  57                    const char *fmt, ...) __attribute__ ((format(printf,7,8)));
  58
  59 #endif /* _NF_LOG_H */