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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2011 NetApp, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <net/ethernet.h>
#include <assert.h>
#include <errno.h>
#include <limits.h>
#include <md5.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "bhyverun.h"
#include "config.h"
#include "debug.h"
#include "net_utils.h"
int
net_parsemac(const char *mac_str, uint8_t *mac_addr)
{
struct ether_addr *ea;
char zero_addr[ETHER_ADDR_LEN] = { 0, 0, 0, 0, 0, 0 };
if (mac_str == NULL)
return (EINVAL);
ea = ether_aton(mac_str);
if (ea == NULL || ETHER_IS_MULTICAST(ea->octet) ||
memcmp(ea->octet, zero_addr, ETHER_ADDR_LEN) == 0) {
EPRINTLN("Invalid MAC %s", mac_str);
return (EINVAL);
} else
memcpy(mac_addr, ea->octet, ETHER_ADDR_LEN);
return (0);
}
int
net_parsemtu(const char *mtu_str, unsigned long *mtu)
{
char *end;
unsigned long val;
assert(mtu_str != NULL);
if (*mtu_str == '-')
goto err;
val = strtoul(mtu_str, &end, 0);
if (*end != '\0')
goto err;
if (val == ULONG_MAX)
return (ERANGE);
if (val == 0 && errno == EINVAL)
return (EINVAL);
*mtu = val;
return (0);
err:
errno = EINVAL;
return (EINVAL);
}
void
net_genmac(struct pci_devinst *pi, uint8_t *macaddr)
{
/*
* The default MAC address is the standard NetApp OUI of 00-a0-98,
* followed by an MD5 of the PCI slot/func number and dev name
*/
MD5_CTX mdctx;
unsigned char digest[16];
char nstr[80];
snprintf(nstr, sizeof(nstr), "%d-%d-%s", pi->pi_slot,
pi->pi_func, get_config_value("name"));
MD5Init(&mdctx);
MD5Update(&mdctx, nstr, (unsigned int)strlen(nstr));
MD5Final(digest, &mdctx);
macaddr[0] = 0x00;
macaddr[1] = 0xa0;
macaddr[2] = 0x98;
macaddr[3] = digest[0];
macaddr[4] = digest[1];
macaddr[5] = digest[2];
}
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