The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/net/if_debug.c

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    1 /*-
    2  * Copyright (c) 2010 Bjoern A. Zeeb <bz@FreeBSD.org>
    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: releng/9.0/sys/net/if_debug.c 223735 2011-07-03 12:22:02Z bz $");
   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_addr);
   71         IF_DB_PRINTF("%p", if_llsoftc);
   72         IF_DB_PRINTF("%p", if_label);
   73         IF_DB_PRINTF("%u", if_pcount);
   74         IF_DB_PRINTF("0x%08x", if_flags);
   75         IF_DB_PRINTF("0x%08x", if_drv_flags);
   76         IF_DB_PRINTF("0x%08x", if_capabilities);
   77         IF_DB_PRINTF("0x%08x", if_capenable);
   78         IF_DB_PRINTF("%p", if_snd.ifq_head);
   79         IF_DB_PRINTF("%p", if_snd.ifq_tail);
   80         IF_DB_PRINTF("%d", if_snd.ifq_len);
   81         IF_DB_PRINTF("%d", if_snd.ifq_maxlen);
   82         IF_DB_PRINTF("%d", if_snd.ifq_drops);
   83         IF_DB_PRINTF("%p", if_snd.ifq_drv_head);
   84         IF_DB_PRINTF("%p", if_snd.ifq_drv_tail);
   85         IF_DB_PRINTF("%d", if_snd.ifq_drv_len);
   86         IF_DB_PRINTF("%d", if_snd.ifq_drv_maxlen);
   87         IF_DB_PRINTF("%d", if_snd.altq_type);
   88         IF_DB_PRINTF("%x", if_snd.altq_flags);
   89         IF_DB_PRINTF("%u", if_fib);
   90 #undef IF_DB_PRINTF
   91 }
   92 
   93 DB_SHOW_COMMAND(ifnet, db_show_ifnet)
   94 {
   95 
   96         if (!have_addr) {
   97                 db_printf("usage: show ifnet <struct ifnet *>\n");
   98                 return;
   99         }
  100 
  101         if_show_ifnet((struct ifnet *)addr);
  102 }
  103 
  104 DB_SHOW_ALL_COMMAND(ifnets, db_show_all_ifnets)
  105 {
  106         VNET_ITERATOR_DECL(vnet_iter);
  107         struct ifnet *ifp;
  108         u_short idx;
  109 
  110         VNET_FOREACH(vnet_iter) {
  111                 CURVNET_SET_QUIET(vnet_iter);
  112 #ifdef VIMAGE
  113                 db_printf("vnet=%p\n", curvnet);
  114 #endif
  115                 for (idx = 1; idx <= V_if_index; idx++) {
  116                         ifp = V_ifindex_table[idx].ife_ifnet;
  117                         if (ifp == NULL)
  118                                 continue;
  119                         db_printf( "%20s ifp=%p\n", ifp->if_xname, ifp);
  120                         if (db_pager_quit)
  121                                 break;
  122                 }
  123                 CURVNET_RESTORE();
  124         }
  125 }
  126 #endif

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