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