diff options
Diffstat (limited to 'include/linux/netfilter_ipv4/ip_conntrack_ftp.h')
| -rw-r--r-- | include/linux/netfilter_ipv4/ip_conntrack_ftp.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/include/linux/netfilter_ipv4/ip_conntrack_ftp.h b/include/linux/netfilter_ipv4/ip_conntrack_ftp.h new file mode 100644 index 00000000000..5f06429b904 --- /dev/null +++ b/include/linux/netfilter_ipv4/ip_conntrack_ftp.h @@ -0,0 +1,43 @@ +#ifndef _IP_CONNTRACK_FTP_H +#define _IP_CONNTRACK_FTP_H +/* FTP tracking. */ + +#ifdef __KERNEL__ + +#define FTP_PORT 21 + +#endif /* __KERNEL__ */ + +enum ip_ct_ftp_type +{ + /* PORT command from client */ + IP_CT_FTP_PORT, + /* PASV response from server */ + IP_CT_FTP_PASV, + /* EPRT command from client */ + IP_CT_FTP_EPRT, + /* EPSV response from server */ + IP_CT_FTP_EPSV, +}; + +#define NUM_SEQ_TO_REMEMBER 2 +/* This structure exists only once per master */ +struct ip_ct_ftp_master { + /* Valid seq positions for cmd matching after newline */ + u_int32_t seq_aft_nl[IP_CT_DIR_MAX][NUM_SEQ_TO_REMEMBER]; + /* 0 means seq_match_aft_nl not set */ + int seq_aft_nl_num[IP_CT_DIR_MAX]; +}; + +struct ip_conntrack_expect; + +/* For NAT to hook in when we find a packet which describes what other + * connection we should expect. */ +extern unsigned int (*ip_nat_ftp_hook)(struct sk_buff **pskb, + enum ip_conntrack_info ctinfo, + enum ip_ct_ftp_type type, + unsigned int matchoff, + unsigned int matchlen, + struct ip_conntrack_expect *exp, + u32 *seq); +#endif /* _IP_CONNTRACK_FTP_H */ |