X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;ds=sidebyside;f=include%2Fnet.h;h=18d279ebe737da5ac87cf891d509b44efb1ece94;hb=256d83cd6d8caf345ffba414a0f77f30d68caf8a;hp=0802fad8761364d97f04a799e91d01ca4cd2eb06;hpb=a891601ce51edbafa1a2750c96a618e4fcbca1c2;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/net.h b/include/net.h
index 0802fad..18d279e 100644
--- a/include/net.h
+++ b/include/net.h
@@ -3,7 +3,7 @@
  *
  *	Copyright 1994 - 2000 Neil Russell.
  *	(See License)
- *
+ *	SPDX-License-Identifier:	GPL-2.0
  *
  * History
  *	9/16/00	  bor  adapted to TQM823L/STK8xxL board, RARP/TFTP boot added
@@ -130,23 +130,6 @@ extern int eth_setenv_enetaddr(char *name, const uchar *enetaddr);
 extern int eth_getenv_enetaddr_by_index(const char *base_name, int index,
 					uchar *enetaddr);
 
-#ifdef CONFIG_RANDOM_MACADDR
-/*
- * The u-boot policy does not allow hardcoded ethernet addresses. Under the
- * following circumstances a random generated address is allowed:
- *  - in emergency cases, where you need a working network connection to set
- *    the ethernet address.
- *    Eg. you want a rescue boot and don't have a serial port to access the
- *    CLI to set environment variables.
- *
- * In these cases, we generate a random locally administered ethernet address.
- *
- * Args:
- *  enetaddr - returns 6 byte hardware address
- */
-extern void eth_random_enetaddr(uchar *enetaddr);
-#endif
-
 extern int usb_eth_initialize(bd_t *bi);
 extern int eth_init(bd_t *bis);			/* Initialize the device */
 extern int eth_send(void *packet, int length);	   /* Send a packet */
@@ -674,6 +657,25 @@ static inline int is_valid_ether_addr(const u8 *addr)
 	return !is_multicast_ether_addr(addr) && !is_zero_ether_addr(addr);
 }
 
+/**
+ * eth_random_addr - Generate software assigned random Ethernet address
+ * @addr: Pointer to a six-byte array containing the Ethernet address
+ *
+ * Generate a random Ethernet address (MAC) that is not multicast
+ * and has the local assigned bit set.
+ */
+static inline void eth_random_addr(uchar *addr)
+{
+	int i;
+	unsigned int seed = get_timer(0);
+
+	for (i = 0; i < 6; i++)
+		addr[i] = rand_r(&seed);
+
+	addr[0] &= 0xfe;	/* clear multicast bit */
+	addr[0] |= 0x02;	/* set local assignment bit (IEEE802) */
+}
+
 /* Convert an IP address to a string */
 extern void ip_to_string(IPaddr_t x, char *s);