1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _NF_CONNTRACK_TFTP_H
3 #define _NF_CONNTRACK_TFTP_H
4 
5 #define TFTP_PORT 69
6 
7 struct tftphdr {
8 	__be16 opcode;
9 };
10 
11 #define TFTP_OPCODE_READ	1
12 #define TFTP_OPCODE_WRITE	2
13 #define TFTP_OPCODE_DATA	3
14 #define TFTP_OPCODE_ACK		4
15 #define TFTP_OPCODE_ERROR	5
16 
17 extern unsigned int (*nf_nat_tftp_hook)(struct sk_buff *skb,
18 				        enum ip_conntrack_info ctinfo,
19 				        struct nf_conntrack_expect *exp);
20 
21 #endif /* _NF_CONNTRACK_TFTP_H */
22