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authorSonic Zhang <sonic.zhang@analog.com>2011-01-10 05:54:33 +0300
committerDavid S. Miller <davem@davemloft.net>2011-01-11 00:31:13 +0300
commit2d70a3d42de642e1d78355338b63cf064dc0f345 (patch)
tree74bf34d7545150b3716671e70a6b12e6faef3927 /drivers/net
parent53ed29841dfffa71c68e5cd3e601da195235ff5b (diff)
downloadlinux-2d70a3d42de642e1d78355338b63cf064dc0f345.tar.xz
netdev: bfin_mac: disable hardware checksum if writeback cache is enabled
With writeback caches, corrupted RX packets will be sent up the stack without any error markings. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/bfin_mac.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/bfin_mac.h b/drivers/net/bfin_mac.h
index 4827f6b8238e..692187da99f0 100644
--- a/drivers/net/bfin_mac.h
+++ b/drivers/net/bfin_mac.h
@@ -17,7 +17,14 @@
#include <linux/etherdevice.h>
#include <linux/bfin_mac.h>
+/*
+ * Disable hardware checksum for bug #5600 if writeback cache is
+ * enabled. Otherwize, corrupted RX packet will be sent up stack
+ * without error mark.
+ */
+#ifndef CONFIG_BFIN_EXTMEM_WRITEBACK
#define BFIN_MAC_CSUM_OFFLOAD
+#endif
#define TX_RECLAIM_JIFFIES (HZ / 5)