From: Intel <intel.com>
Date: Wed, 18 Sep 2013 10:00:00 +0000 (+0200)
Subject: ethdev: random MAC address
X-Git-Tag: spdx-start~11134
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=7ef007291004de0bb2a5d298cb11d07a9f9d088e;p=dpdk.git

ethdev: random MAC address

Factorize code by moving random_addr() function in only place.
It will be reused for virtio.

Signed-off-by: Intel
---

diff --git a/lib/librte_ether/rte_ether.h b/lib/librte_ether/rte_ether.h
index e038592c4f..c6782b85bc 100644
--- a/lib/librte_ether/rte_ether.h
+++ b/lib/librte_ether/rte_ether.h
@@ -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.
  *
diff --git a/lib/librte_pmd_e1000/igb_pf.c b/lib/librte_pmd_e1000/igb_pf.c
index 68f7c69c53..9c1c9dcd0a 100644
--- a/lib/librte_pmd_e1000/igb_pf.c
+++ b/lib/librte_pmd_e1000/igb_pf.c
@@ -54,17 +54,6 @@
 #include "e1000/e1000_hw.h"
 #include "e1000_ethdev.h"
 
-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] &= 0xfe;	/* clear multicast bit */
-	addr[0] |= 0x02;	/* set local assignment bit (IEEE802) */
-}
-
 static inline uint16_t
 dev_num_vf(struct rte_eth_dev *eth_dev)
 {
diff --git a/lib/librte_pmd_ixgbe/ixgbe_pf.c b/lib/librte_pmd_ixgbe/ixgbe_pf.c
index c61b7149f0..f1207c0c3a 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_pf.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_pf.c
@@ -54,17 +54,6 @@
 
 #define IXGBE_MAX_VFTA     (128)
 
-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] &= 0xfe;	/* clear multicast bit */
-	addr[0] |= 0x02;	/* set local assignment bit (IEEE802) */
-}
-
 static inline uint16_t
 dev_num_vf(struct rte_eth_dev *eth_dev)
 {