1 files changed, 120 insertions, 0 deletions
diff --git a/usr.sbin/bhyve/net_utils.c b/usr.sbin/bhyve/net_utils.c
new file mode 100644
index 000000000000..7dc37dce06b3
--- /dev/null
+++ b/usr.sbin/bhyve/net_utils.c
@@ -0,0 +1,120 @@
+/*-
+ * 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];
+}