public inbox for passt-dev@passt.top
 help / color / mirror / code / Atom feed
blob f6bf1b5389100545bdc51f6b3979a7c7cdb4db61 1236 bytes (raw)

 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
38
39
40
41
42
43
44
 
/* 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)
 * @scan4:	/proc/net fd to scan for IPv4 ports when in AUTO mode
 * @scan6:	/proc/net fd to scan for IPv6 ports when in AUTO mode
 * @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;
	int scan4;
	int scan6;
	uint8_t map[PORT_BITMAP_SIZE];
	in_port_t delta[NUM_PORTS];
};

void port_fwd_scan_tcp(struct port_fwd *fwd, const struct port_fwd *rev);
void port_fwd_scan_udp(struct port_fwd *fwd, const struct port_fwd *rev,
		       const struct port_fwd *tcp_fwd,
		       const struct port_fwd *tcp_rev);
void port_fwd_init(struct ctx *c);

#endif /* PORT_FWD_H */

debug log:

solving f6bf1b53 ...
found f6bf1b53 in https://passt.top/passt

Code repositories for project(s) associated with this public inbox

	https://passt.top/passt

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for IMAP folder(s).