net: use common rand()/srand() functions

Replace rand() with the functions from lib/. The link-local network code
stores its own seed, derived from the MAC address. Thus making it
independent from calls to srand() in other modules.

Signed-off-by: Michael Walle <michael@walle.cc>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

1 files changed, 0 insertions, 68 deletions

diff --git a/net/net_rand.c b/net/net_rand.c
deleted file mode 100644
index 5387abadcf..0000000000
--- a/net/net_rand.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- *	Based on LiMon - BOOTP.
- *
- *	Copyright 1994, 1995, 2000 Neil Russell.
- *	(See License)
- *	Copyright 2000 Roland Borde
- *	Copyright 2000 Paolo Scaffardi
- *	Copyright 2000-2004 Wolfgang Denk, wd@denx.de
- */
-
-#include <common.h>
-#include <net.h>
-#include "net_rand.h"
-
-static ulong seed1, seed2;
-
-void srand_mac(void)
-{
-	ulong tst1, tst2, m_mask;
-	ulong m_value = 0;
-	int reg;
-	unsigned char bi_enetaddr[6];
-
-	/* get our mac */
-	eth_getenv_enetaddr("ethaddr", bi_enetaddr);
-
-	debug("BootpRequest => Our Mac: ");
-	for (reg = 0; reg < 6; reg++)
-		debug("%x%c", bi_enetaddr[reg], reg == 5 ? '\n' : ':');
-
-	/* Mac-Manipulation 2 get seed1 */
-	tst1 = 0;
-	tst2 = 0;
-	for (reg = 2; reg < 6; reg++) {
-		tst1 = tst1 << 8;
-		tst1 = tst1 | bi_enetaddr[reg];
-	}
-	for (reg = 0; reg < 2; reg++) {
-		tst2 = tst2 | bi_enetaddr[reg];
-		tst2 = tst2 << 8;
-	}
-
-	seed1 = tst1^tst2;
-
-	/* Mirror seed1*/
-	m_mask = 0x1;
-	for (reg = 1; reg <= 32; reg++) {
-		m_value |= (m_mask & seed1);
-		seed1 = seed1 >> 1;
-		m_value = m_value << 1;
-	}
-	seed1 = m_value;
-	seed2 = 0xb78d0945;
-}
-
-unsigned long rand(void)
-{
-	ulong sum;
-
-	/* Random Number Generator */
-	sum = seed1 + seed2;
-	if (sum < seed1 || sum < seed2)
-		sum++;
-	seed2 = seed1;
-	seed1 = sum;
-
-	return sum;
-}