xref: /freebsd-12.1/sys/net/if_debug.c (revision ce570b1e)
1 /*-
2  * Copyright (c) 2010 Bjoern A. Zeeb <[email protected]>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29 
30 #include "opt_ddb.h"
31 
32 #include <sys/param.h>
33 #include <sys/socket.h>
34 #include <sys/types.h>
35 
36 #ifdef DDB
37 #include <ddb/ddb.h>
38 #endif
39 
40 #include <net/if.h>
41 #include <net/if_types.h>
42 #include <net/if_var.h>
43 #include <net/vnet.h>
44 
45 #ifdef DDB
46 struct ifindex_entry {
47 	struct  ifnet *ife_ifnet;
48 };
49 VNET_DECLARE(struct ifindex_entry *, ifindex_table);
50 #define	V_ifindex_table		VNET(ifindex_table)
51 
52 static void
53 if_show_ifnet(struct ifnet *ifp)
54 {
55 
56 	if (ifp == NULL)
57 		return;
58 	db_printf("%s:\n", ifp->if_xname);
59 #define	IF_DB_PRINTF(f, e)	db_printf("   %s = " f "\n", #e, ifp->e);
60 	IF_DB_PRINTF("%s", if_dname);
61 	IF_DB_PRINTF("%d", if_dunit);
62 	IF_DB_PRINTF("%s", if_description);
63 	IF_DB_PRINTF("%u", if_index);
64 	IF_DB_PRINTF("%u", if_refcount);
65 	IF_DB_PRINTF("%d", if_index_reserved);
66 	IF_DB_PRINTF("%p", if_softc);
67 	IF_DB_PRINTF("%p", if_l2com);
68 	IF_DB_PRINTF("%p", if_vnet);
69 	IF_DB_PRINTF("%p", if_home_vnet);
70 	IF_DB_PRINTF("%p", if_vlantrunk);
71 	IF_DB_PRINTF("%p", if_bpf);
72 	IF_DB_PRINTF("%p", if_addr);
73 	IF_DB_PRINTF("%p", if_llsoftc);
74 	IF_DB_PRINTF("%p", if_label);
75 	IF_DB_PRINTF("%u", if_pcount);
76 	IF_DB_PRINTF("0x%08x", if_flags);
77 	IF_DB_PRINTF("0x%08x", if_drv_flags);
78 	IF_DB_PRINTF("0x%08x", if_capabilities);
79 	IF_DB_PRINTF("0x%08x", if_capenable);
80 	IF_DB_PRINTF("%p", if_snd.ifq_head);
81 	IF_DB_PRINTF("%p", if_snd.ifq_tail);
82 	IF_DB_PRINTF("%d", if_snd.ifq_len);
83 	IF_DB_PRINTF("%d", if_snd.ifq_maxlen);
84 	IF_DB_PRINTF("%p", if_snd.ifq_drv_head);
85 	IF_DB_PRINTF("%p", if_snd.ifq_drv_tail);
86 	IF_DB_PRINTF("%d", if_snd.ifq_drv_len);
87 	IF_DB_PRINTF("%d", if_snd.ifq_drv_maxlen);
88 	IF_DB_PRINTF("%d", if_snd.altq_type);
89 	IF_DB_PRINTF("%x", if_snd.altq_flags);
90 	IF_DB_PRINTF("%u", if_fib);
91 #undef IF_DB_PRINTF
92 }
93 
94 DB_SHOW_COMMAND(ifnet, db_show_ifnet)
95 {
96 
97 	if (!have_addr) {
98 		db_printf("usage: show ifnet <struct ifnet *>\n");
99 		return;
100 	}
101 
102 	if_show_ifnet((struct ifnet *)addr);
103 }
104 
105 DB_SHOW_ALL_COMMAND(ifnets, db_show_all_ifnets)
106 {
107 	VNET_ITERATOR_DECL(vnet_iter);
108 	struct ifnet *ifp;
109 	u_short idx;
110 
111 	VNET_FOREACH(vnet_iter) {
112 		CURVNET_SET_QUIET(vnet_iter);
113 #ifdef VIMAGE
114 		db_printf("vnet=%p\n", curvnet);
115 #endif
116 		for (idx = 1; idx <= V_if_index; idx++) {
117 			ifp = V_ifindex_table[idx].ife_ifnet;
118 			if (ifp == NULL)
119 				continue;
120 			db_printf( "%20s ifp=%p\n", ifp->if_xname, ifp);
121 			if (db_pager_quit)
122 				break;
123 		}
124 		CURVNET_RESTORE();
125 	}
126 }
127 #endif
128