From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: barebox@lists.infradead.org
Subject: [PATCH 1/3] introduce helper to generate mac address with OUI
Date: Fri, 20 Sep 2013 07:40:48 +0200 [thread overview]
Message-ID: <1379655650-23221-1-git-send-email-plagnioj@jcrosoft.com> (raw)
In-Reply-To: <20130920053940.GC1137@ns203013.ovh.net>
use random mac address with fixed OUI provided
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
include/local_mac_address.h | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
create mode 100644 include/local_mac_address.h
diff --git a/include/local_mac_address.h b/include/local_mac_address.h
new file mode 100644
index 0000000..3920334
--- /dev/null
+++ b/include/local_mac_address.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnio@jcrosoft.com>
+ *
+ * Under GPLv2 only
+ */
+
+#ifndef __LOCAL_MAC_ADDRESS_H__
+#define __LOCAL_MAC_ADDRESS_H__
+
+/**
+ * local_mac_address_register - use random number with fix
+ * OUI provided device to provide an Ethernet address
+ * @ethid: ethernet device id
+ * @oui: Ethernet OUI (3 bytes)
+ *
+ * Generate a local Ethernet address (MAC) that is not multicast using a 1-wire id.
+ */
+static inline int local_mac_address_register(int ethid, char * oui)
+{
+ char addr[6];
+ int nb_oui = 3;
+ int i;
+
+ if (!oui)
+ return -EINVAL;
+
+ random_ether_addr(addr);
+
+ for (i = 0; i < nb_oui; i++)
+ addr[i] = oui[i];
+
+ addr[0] &= 0xfe; /* clear multicast bit */
+ addr[0] |= 0x02; /* set local assignment bit (IEEE802) */
+
+ eth_register_ethaddr(ethid, addr);
+
+ return 0;
+}
+
+#endif /* __LOCAL_MAC_ADDRESS_H__ */
--
1.8.4.rc1
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next prev parent reply other threads:[~2013-09-20 5:40 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-20 5:39 [PATCH 0/3] Animeo IP: macb support improvement Jean-Christophe PLAGNIOL-VILLARD
2013-09-20 5:40 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2013-09-20 5:40 ` [PATCH 2/3] animeo_ip: ensure the phy is reset correctly Jean-Christophe PLAGNIOL-VILLARD
2013-09-20 5:40 ` [PATCH 3/3] animeo_ip: retrieve the mac from the macb and set private mac to asix Jean-Christophe PLAGNIOL-VILLARD
2013-09-20 5:46 [PATCH 0/3 v2] Animeo IP: macb support improvement Jean-Christophe PLAGNIOL-VILLARD
2013-09-20 5:47 ` [PATCH 1/3] introduce helper to generate mac address with OUI Jean-Christophe PLAGNIOL-VILLARD
2013-09-20 7:04 ` Sascha Hauer
2013-09-20 7:44 ` Jean-Christophe PLAGNIOL-VILLARD
2013-09-22 18:28 ` Sascha Hauer
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