1/*-
 2 * SPDX-License-Identifier: BSD-2-Clause
 3 *
 4 * Copyright (c) 2019 Isilon Systems, LLC.
 5 *
 6 * Redistribution and use in source and binary forms, with or without
 7 * modification, are permitted provided that the following conditions
 8 * are met:
 9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#pragma once
29
30#ifndef DEBUGNET_INTERNAL
31#error "Don't include this"
32#endif
33
34#define	DNETDEBUG(f, ...) do {						\
35	if (debugnet_debug > 0)						\
36		printf(("%s: " f), __func__, ## __VA_ARGS__);		\
37} while (0)
38#define	DNETDEBUG_IF(i, f, ...) do {					\
39	if (debugnet_debug > 0)						\
40		if_printf((i), ("%s: " f), __func__, ## __VA_ARGS__);	\
41} while (0)
42#define	DNETDEBUGV(f, ...) do {						\
43	if (debugnet_debug > 1)						\
44		printf(("%s: " f), __func__, ## __VA_ARGS__);		\
45} while (0)
46
47enum dnet_pcb_st {
48	DN_STATE_INIT = 1,
49	DN_STATE_HAVE_GW_MAC,
50	DN_STATE_GOT_HERALD_PORT,
51	DN_STATE_REMOTE_CLOSED,
52};
53
54struct debugnet_pcb {
55	uint64_t		dp_rcvd_acks;
56
57	in_addr_t		dp_client;
58	in_addr_t		dp_server;
59	in_addr_t		dp_gateway;
60	uint32_t		dp_seqno;
61
62	struct ether_addr	dp_gw_mac;
63	uint16_t		dp_server_port;
64
65	struct ifnet		*dp_ifp;
66	/* Saved driver if_input to restore on close. */
67	void			(*dp_drv_input)(struct ifnet *, struct mbuf *);
68
69	/* RX handler for bidirectional protocols. */
70	int			(*dp_rx_handler)(struct mbuf *);
71
72	/* Cleanup signal for bidirectional protocols. */
73	void			(*dp_finish_handler)(void);
74
75	enum dnet_pcb_st	dp_state;
76	uint16_t		dp_client_port;
77	bool			dp_event_started;
78};
79
80/* TODO(CEM): Obviate this assertion by using a BITSET(9) for acks. */
81CTASSERT(sizeof(((struct debugnet_pcb *)0)->dp_rcvd_acks) * NBBY >=
82    DEBUGNET_MAX_IN_FLIGHT);
83
84extern unsigned debugnet_debug;
85SYSCTL_DECL(_net_debugnet);
86
87int debugnet_ether_output(struct mbuf *, struct ifnet *, struct ether_addr,
88    u_short);
89void debugnet_handle_udp(struct debugnet_pcb *, struct mbuf **);
90
91#ifdef INET
92int debugnet_arp_gw(struct debugnet_pcb *);
93void debugnet_handle_arp(struct debugnet_pcb *, struct mbuf **);
94void debugnet_handle_ip(struct debugnet_pcb *, struct mbuf **);
95int debugnet_ip_output(struct debugnet_pcb *, struct mbuf *);
96#endif