1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
| | /* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright Red Hat
* Author: Stefano Brivio <sbrivio@redhat.com>
* Author: David Gibson <david@gibson.dropbear.id.au>
*/
#ifndef PORT_FWD_H
#define PORT_FWD_H
/* Number of ports for both TCP and UDP */
#define NUM_PORTS (1U << 16)
enum port_fwd_mode {
FWD_SPEC = 1,
FWD_NONE,
FWD_AUTO,
FWD_ALL,
};
#define PORT_BITMAP_SIZE DIV_ROUND_UP(NUM_PORTS, 8)
/**
* port_fwd - Describes port forwarding for one protocol and direction
* @mode: Overall forwarding mode (all, none, auto, specific ports)
* @map: Bitmap describing which ports are forwarded
* @delta: Offset between the original destination and mapped port number
*/
struct port_fwd {
enum port_fwd_mode mode;
uint8_t map[PORT_BITMAP_SIZE];
in_port_t delta[NUM_PORTS];
};
void get_bound_ports(struct ctx *c, int ns, uint8_t proto);
void port_fwd_init(struct ctx *c);
#endif /* PORT_FWD_H */
|