LXR linux/include/linux/netfilter/nf_conntrack

   1#ifndef _NF_CONNTRACK_FTP_H
   2#define _NF_CONNTRACK_FTP_H
   3
   4#include <uapi/linux/netfilter/nf_conntrack_ftp.h>
   5
   6
   7#define FTP_PORT        21
   8
   9#define NF_CT_FTP_SEQ_PICKUP    (1 << 0)
  10
  11#define NUM_SEQ_TO_REMEMBER 2
  12/* This structure exists only once per master */
  13struct nf_ct_ftp_master {
  14        /* Valid seq positions for cmd matching after newline */
  15        u_int32_t seq_aft_nl[IP_CT_DIR_MAX][NUM_SEQ_TO_REMEMBER];
  16        /* 0 means seq_match_aft_nl not set */
  17        u_int16_t seq_aft_nl_num[IP_CT_DIR_MAX];
  18        /* pickup sequence tracking, useful for conntrackd */
  19        u_int16_t flags[IP_CT_DIR_MAX];
  20};
  21
  22struct nf_conntrack_expect;
  23
  24/* For NAT to hook in when we find a packet which describes what other
  25 * connection we should expect. */
  26extern unsigned int (*nf_nat_ftp_hook)(struct sk_buff *skb,
  27                                       enum ip_conntrack_info ctinfo,
  28                                       enum nf_ct_ftp_type type,
  29                                       unsigned int protoff,
  30                                       unsigned int matchoff,
  31                                       unsigned int matchlen,
  32                                       struct nf_conntrack_expect *exp);
  33#endif /* _NF_CONNTRACK_FTP_H */
  34