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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/stropts.h>
#include <sys/stream.h>
#include <sys/dlpi.h>
#include <sys/hook.h>
#include <sys/hook_event.h>
#include <inet/led.h>
#include <inet/common.h>
#include <inet/mi.h>
#include <inet/arp.h>
#include <inet/ip.h>
#include <netinet/arp.h>
#include <mdb/mdb_modapi.h>
#include <mdb/mdb_ks.h>
typedef struct {
uint32_t act_cmd;
char *act_name;
char *act_type;
} arp_cmd_tbl;
/*
* removed all the ace/arl related stuff. The only thing that remains
* is code for dealing with ioctls and printing out arp header that
* should probably be moved into the ip/mdb module.
*/
/*
* Print an ARP hardware and protocol address pair; used when printing an ARP
* message.
*/
static void
print_arp(char field_id, const uchar_t *buf, const arh_t *arh, uint16_t ptype)
{
char macstr[ARP_MAX_ADDR_LEN*3];
in_addr_t inaddr;
if (arh->arh_hlen == 0)
(void) strcpy(macstr, "(none)");
else
mdb_mac_addr(buf, arh->arh_hlen, macstr, sizeof (macstr));
mdb_printf("%?s ar$%cha %s\n", "", field_id, macstr);
if (arh->arh_plen == 0) {
mdb_printf("%?s ar$%cpa (none)\n", "", field_id);
} else if (ptype == IP_ARP_PROTO_TYPE) {
mdb_printf("%?s ar$%cpa (unknown)\n", "", field_id);
} else if (arh->arh_plen == sizeof (in_addr_t)) {
(void) memcpy(&inaddr, buf + arh->arh_hlen, sizeof (inaddr));
mdb_printf("%?s ar$%cpa %I\n", "", field_id, inaddr);
} else {
mdb_printf("%?s ar$%cpa (malformed IP)\n", "", field_id);
}
}
/*
* Decode an ARP message and display it.
*/
/* ARGSUSED2 */
static int
arphdr_cmd(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
struct {
arh_t arh;
uchar_t addrs[4 * ARP_MAX_ADDR_LEN];
} arp;
size_t blen;
uint16_t htype, ptype, op;
const char *cp;
if (!(flags & DCMD_ADDRSPEC)) {
mdb_warn("address required to print ARP header\n");
return (DCMD_ERR);
}
if (mdb_vread(&arp.arh, sizeof (arp.arh), addr) == -1) {
mdb_warn("unable to read ARP header at %p", addr);
return (DCMD_ERR);
}
mdb_nhconvert(&htype, arp.arh.arh_hardware, sizeof (htype));
mdb_nhconvert(&ptype, arp.arh.arh_proto, sizeof (ptype));
mdb_nhconvert(&op, arp.arh.arh_operation, sizeof (op));
switch (htype) {
case ARPHRD_ETHER:
cp = "Ether";
break;
case ARPHRD_IEEE802:
cp = "IEEE802";
break;
case ARPHRD_IB:
cp = "InfiniBand";
break;
default:
cp = "Unknown";
break;
}
mdb_printf("%?p: ar$hrd %x (%s)\n", addr, htype, cp);
mdb_printf("%?s ar$pro %x (%s)\n", "", ptype,
ptype == IP_ARP_PROTO_TYPE ? "IP" : "Unknown");
switch (op) {
case ARPOP_REQUEST:
cp = "ares_op$REQUEST";
break;
case ARPOP_REPLY:
cp = "ares_op$REPLY";
break;
case REVARP_REQUEST:
cp = "arev_op$REQUEST";
break;
case REVARP_REPLY:
cp = "arev_op$REPLY";
break;
default:
cp = "Unknown";
break;
}
mdb_printf("%?s ar$op %d (%s)\n", "", op, cp);
/*
* Note that we go to some length to attempt to print out the fixed
* header data before trying to decode the variable-length data. This
* is done to maximize the amount of useful information shown when the
* buffer is truncated or otherwise corrupt.
*/
blen = 2 * (arp.arh.arh_hlen + arp.arh.arh_plen);
if (mdb_vread(&arp.addrs, blen, addr + sizeof (arp.arh)) == -1) {
mdb_warn("unable to read ARP body at %p", addr);
return (DCMD_ERR);
}
print_arp('s', arp.addrs, &arp.arh, ptype);
print_arp('t', arp.addrs + arp.arh.arh_hlen + arp.arh.arh_plen,
&arp.arh, ptype);
return (DCMD_OK);
}
static const mdb_dcmd_t dcmds[] = {
{ "arphdr", ":", "display an ARP header", arphdr_cmd, NULL },
{ NULL }
};
/* Note: ar_t walker is in genunix.c and net.c; generic MI walker */
static const mdb_walker_t walkers[] = {
{ NULL }
};
static const mdb_modinfo_t modinfo = { MDB_API_VERSION, dcmds, walkers };
const mdb_modinfo_t *
_mdb_init(void)
{
return (&modinfo);
}
void
_mdb_fini(void)
{
}
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