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[NETFILTER]: nf_conntrack/nf_nat: add TFTP helper port

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Add IPv4 and IPv6 capable nf_conntrack port of the TFTP conntrack/NAT helper.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
2006-12-02 22:10:18 -08:00
committed by David S. Miller
parent 9fafcd7b20
commit a536df35b3
7 changed files with 249 additions and 0 deletions
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20
include/linux/netfilter/nf_conntrack_tftp.h Normal file
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#ifndef _NF_CONNTRACK_TFTP_H
#define _NF_CONNTRACK_TFTP_H
#define TFTP_PORT 69
struct tftphdr {
__be16 opcode;
};
#define TFTP_OPCODE_READ 1
#define TFTP_OPCODE_WRITE 2
#define TFTP_OPCODE_DATA 3
#define TFTP_OPCODE_ACK 4
#define TFTP_OPCODE_ERROR 5
extern unsigned int (*nf_nat_tftp_hook)(struct sk_buff **pskb,
enum ip_conntrack_info ctinfo,
struct nf_conntrack_expect *exp);
#endif /* _NF_CONNTRACK_TFTP_H */