X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;ds=inline;f=lib%2Flibrte_ether%2Frte_ether.h;h=71dc7884f78eceb06fe779fa57a0171536aad5fd;hb=57f0ba5f8b8588dfa6ffcd001447ef6337afa6cd;hp=e038592c4f2cf14da2845aa3c62a6a0a7d80586a;hpb=88ac4396ad290a0287f6c533bd022d0cebcd8374;p=dpdk.git

diff --git a/lib/librte_ether/rte_ether.h b/lib/librte_ether/rte_ether.h
index e038592c4f..71dc7884f7 100644
--- a/lib/librte_ether/rte_ether.h
+++ b/lib/librte_ether/rte_ether.h
@@ -1,7 +1,7 @@
 /*-
  *   BSD LICENSE
  * 
- *   Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
  *   All rights reserved.
  * 
  *   Redistribution and use in source and binary forms, with or without
@@ -46,6 +46,9 @@ extern "C" {
 
 #include <stdint.h>
 
+#include <rte_memcpy.h>
+#include <rte_random.h>
+
 #define ETHER_ADDR_LEN  6 /**< Length of Ethernet address. */
 #define ETHER_TYPE_LEN  2 /**< Length of Ethernet type field. */
 #define ETHER_CRC_LEN   4 /**< Length of Ethernet CRC. */
@@ -195,6 +198,22 @@ static inline int is_valid_assigned_ether_addr(const struct ether_addr *ea)
 	return (is_unicast_ether_addr(ea) && (! is_zero_ether_addr(ea)));
 }
 
+/**
+ * Generate a random Ethernet address that is locally administered
+ * and not multicast.
+ * @param addr
+ *   A pointer to Ethernet address.
+ */
+static inline void eth_random_addr(uint8_t *addr)
+{
+	uint64_t rand = rte_rand();
+	uint8_t *p = (uint8_t*)&rand;
+
+	rte_memcpy(addr, p, ETHER_ADDR_LEN);
+	addr[0] &= ~ETHER_GROUP_ADDR;       /* clear multicast bit */
+	addr[0] |= ETHER_LOCAL_ADMIN_ADDR;  /* set local assignment bit */
+}
+
 /**
  * Fast copy an Ethernet address.
  *