[linux-2.6-block.git] / include / linux / netfilter / nf_conntrack_ftp.h

#ifndef _NF_CONNTRACK_FTP_H
#define _NF_CONNTRACK_FTP_H
/* FTP tracking. */

/* This enum is exposed to userspace */
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,
};

#ifdef __KERNEL__

#define FTP_PORT	21

#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 /* __KERNEL__ */

#endif /* _NF_CONNTRACK_FTP_H */
Commit	Line	Data
9fb9cbb1 YK	1	#ifndef _NF_CONNTRACK_FTP_H
	2	#define _NF_CONNTRACK_FTP_H
	3	/* FTP tracking. */
	4
	5	/* This enum is exposed to userspace */
	6	enum ip_ct_ftp_type
	7	{
	8	/* PORT command from client */
	9	IP_CT_FTP_PORT,
	10	/* PASV response from server */
	11	IP_CT_FTP_PASV,
	12	/* EPRT command from client */
	13	IP_CT_FTP_EPRT,
	14	/* EPSV response from server */
	15	IP_CT_FTP_EPSV,
	16	};
	17
	18	#ifdef __KERNEL__
	19
	20	#define FTP_PORT 21
	21
	22	#define NUM_SEQ_TO_REMEMBER 2
	23	/* This structure exists only once per master */
	24	struct ip_ct_ftp_master {
	25	/* Valid seq positions for cmd matching after newline */
	26	u_int32_t seq_aft_nl[IP_CT_DIR_MAX][NUM_SEQ_TO_REMEMBER];
	27	/* 0 means seq_match_aft_nl not set */
	28	int seq_aft_nl_num[IP_CT_DIR_MAX];
	29	};
	30
	31	struct ip_conntrack_expect;
	32
	33	/* For NAT to hook in when we find a packet which describes what other
	34	* connection we should expect. */
	35	extern unsigned int (ip_nat_ftp_hook)(struct sk_buff *pskb,
	36	enum ip_conntrack_info ctinfo,
	37	enum ip_ct_ftp_type type,
	38	unsigned int matchoff,
	39	unsigned int matchlen,
	40	struct ip_conntrack_expect *exp,
	41	u32 *seq);
	42	#endif /* __KERNEL__ */
	43
	44	#endif /* _NF_CONNTRACK_FTP_H */