From 635cc81bf91135c12035f56ac5b6ce28cb19c5ab Mon Sep 17 00:00:00 2001
From: Aurelien Jarno <aurelien@aurel32.net>
Date: Sun, 10 Jun 2012 23:18:44 +0200
Subject: [PATCH] lan9118: fix multicast filtering

The lan9118 emulation tries to compute the multicast index by calling
directly the crc32() function from zlib, but fails to get the correct
result.

Use the common compute_mcast_idx() function instead, which gives the
correct result. This fixes IPv6 support.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
(cherry picked from commit 449bc90e1f2e2fbafb64eb0c76d16c9352b0d2df)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 hw/lan9118.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/lan9118.c b/hw/lan9118.c
index ff0a50be196..ceaf96fc3ee 100644
--- a/hw/lan9118.c
+++ b/hw/lan9118.c
@@ -500,7 +500,7 @@ static int lan9118_filter(lan9118_state *s, const uint8_t *addr)
         }
     } else {
         /* Hash matching  */
-        hash = (crc32(~0, addr, 6) >> 26);
+        hash = compute_mcast_idx(addr);
         if (hash & 0x20) {
             return (s->mac_hashh >> (hash & 0x1f)) & 1;
         } else {
-- 
2.39.5