1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * $FreeBSD$ 28 */ 29 30 #pragma once 31 32 #ifndef DEBUGNET_INTERNAL 33 #error "Don't include this" 34 #endif 35 36 #define DNETDEBUG(f, ...) do { \ 37 if (debugnet_debug > 0) \ 38 printf(("%s: " f), __func__, ## __VA_ARGS__); \ 39 } while (0) 40 #define DNETDEBUG_IF(i, f, ...) do { \ 41 if (debugnet_debug > 0) \ 42 if_printf((i), ("%s: " f), __func__, ## __VA_ARGS__); \ 43 } while (0) 44 #define DNETDEBUGV(f, ...) do { \ 45 if (debugnet_debug > 1) \ 46 printf(("%s: " f), __func__, ## __VA_ARGS__); \ 47 } while (0) 48 49 enum dnet_pcb_st { 50 DN_STATE_INIT = 1, 51 DN_STATE_HAVE_GW_MAC, 52 DN_STATE_GOT_HERALD_PORT, 53 DN_STATE_REMOTE_CLOSED, 54 }; 55 56 struct debugnet_pcb { 57 uint64_t dp_rcvd_acks; 58 59 in_addr_t dp_client; 60 in_addr_t dp_server; 61 in_addr_t dp_gateway; 62 uint32_t dp_seqno; 63 64 struct ether_addr dp_gw_mac; 65 uint16_t dp_server_port; 66 67 struct ifnet *dp_ifp; 68 /* Saved driver if_input to restore on close. */ 69 void (*dp_drv_input)(struct ifnet *, struct mbuf *); 70 71 /* RX handler for bidirectional protocols. */ 72 void (*dp_rx_handler)(struct debugnet_pcb *, 73 struct mbuf **); 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. */ 81 CTASSERT(sizeof(((struct debugnet_pcb *)0)->dp_rcvd_acks) * NBBY >= 82 DEBUGNET_MAX_IN_FLIGHT); 83 84 extern unsigned debugnet_debug; 85 SYSCTL_DECL(_net_debugnet); 86 87 int debugnet_ether_output(struct mbuf *, struct ifnet *, struct ether_addr, 88 u_short); 89 void debugnet_handle_udp(struct debugnet_pcb *, struct mbuf **); 90 91 #ifdef INET 92 int debugnet_arp_gw(struct debugnet_pcb *); 93 void debugnet_handle_arp(struct debugnet_pcb *, struct mbuf **); 94 void debugnet_handle_ip(struct debugnet_pcb *, struct mbuf **); 95 int debugnet_ip_output(struct debugnet_pcb *, struct mbuf *); 96 #endif 97