Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 60 insertions, 0 deletions

diff --git a/arch/m32r/lib/csum_partial_copy.c b/arch/m32r/lib/csum_partial_copy.c
new file mode 100644
index 000000000000..c871b4606b07
--- /dev/null
+++ b/arch/m32r/lib/csum_partial_copy.c
@@ -0,0 +1,60 @@
+/*
+ * INET         An implementation of the TCP/IP protocol suite for the LINUX
+ *              operating system.  INET is implemented using the  BSD Socket
+ *              interface as the means of communication with the user level.
+ *
+ *              M32R specific IP/TCP/UDP checksumming routines
+ *              (Some code taken from MIPS architecture)
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1994, 1995  Waldorf Electronics GmbH
+ * Copyright (C) 1998, 1999  Ralf Baechle
+ * Copyright (C) 2001-2005  Hiroyuki Kondo, Hirokazu Takata
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+
+#include <net/checksum.h>
+#include <asm/byteorder.h>
+#include <asm/string.h>
+#include <asm/uaccess.h>
+
+/*
+ * Copy while checksumming, otherwise like csum_partial
+ */
+unsigned int
+csum_partial_copy_nocheck (const unsigned char *src, unsigned char *dst,
+                           int len, unsigned int sum)
+{
+        sum = csum_partial(src, len, sum);
+        memcpy(dst, src, len);
+
+        return sum;
+}
+EXPORT_SYMBOL(csum_partial_copy_nocheck);
+
+/*
+ * Copy from userspace and compute checksum.  If we catch an exception
+ * then zero the rest of the buffer.
+ */
+unsigned int
+csum_partial_copy_from_user (const unsigned char __user *src,
+                             unsigned char *dst,
+                             int len, unsigned int sum, int *err_ptr)
+{
+        int missing;
+
+        missing = copy_from_user(dst, src, len);
+        if (missing) {
+                memset(dst + len - missing, 0, missing);
+                *err_ptr = -EFAULT;
+        }
+
+        return csum_partial(dst, len-missing, sum);
+}
+EXPORT_SYMBOL(csum_partial_copy_from_user);