Linux-2.6.12-rc2v2.6.12-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, 94 insertions, 0 deletions

diff --git a/include/net/ip6_checksum.h b/include/net/ip6_checksum.h
new file mode 100644
index 000000000000..3dfc885bdf25
--- /dev/null
+++ b/include/net/ip6_checksum.h
@@ -0,0 +1,94 @@
+/*
+ * 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.
+ *
+ *              Checksumming functions for IPv6
+ *
+ * Authors:     Jorge Cwik, <jorge@laser.satlink.net>
+ *              Arnt Gulbrandsen, <agulbra@nvg.unit.no>
+ *              Borrows very liberally from tcp.c and ip.c, see those
+ *              files for more names.
+ *
+ *              This program is free software; you can redistribute it and/or
+ *              modify it under the terms of the GNU General Public License
+ *              as published by the Free Software Foundation; either version
+ *              2 of the License, or (at your option) any later version.
+ */
+
+/*
+ *      Fixes:
+ *
+ *      Ralf Baechle                    :       generic ipv6 checksum
+ *      <ralf@waldorf-gmbh.de>
+ */
+
+#ifndef _CHECKSUM_IPV6_H
+#define _CHECKSUM_IPV6_H
+
+#include <asm/types.h>
+#include <asm/byteorder.h>
+#include <net/ip.h>
+#include <asm/checksum.h>
+#include <linux/in6.h>
+
+#ifndef _HAVE_ARCH_IPV6_CSUM
+
+static __inline__ unsigned short int csum_ipv6_magic(struct in6_addr *saddr,
+                                                     struct in6_addr *daddr,
+                                                     __u16 len,
+                                                     unsigned short proto,
+                                                     unsigned int csum) 
+{
+
+        int carry;
+        __u32 ulen;
+        __u32 uproto;
+
+        csum += saddr->s6_addr32[0];
+        carry = (csum < saddr->s6_addr32[0]);
+        csum += carry;
+
+        csum += saddr->s6_addr32[1];
+        carry = (csum < saddr->s6_addr32[1]);
+        csum += carry;
+
+        csum += saddr->s6_addr32[2];
+        carry = (csum < saddr->s6_addr32[2]);
+        csum += carry;
+
+        csum += saddr->s6_addr32[3];
+        carry = (csum < saddr->s6_addr32[3]);
+        csum += carry;
+
+        csum += daddr->s6_addr32[0];
+        carry = (csum < daddr->s6_addr32[0]);
+        csum += carry;
+
+        csum += daddr->s6_addr32[1];
+        carry = (csum < daddr->s6_addr32[1]);
+        csum += carry;
+
+        csum += daddr->s6_addr32[2];
+        carry = (csum < daddr->s6_addr32[2]);
+        csum += carry;
+
+        csum += daddr->s6_addr32[3];
+        carry = (csum < daddr->s6_addr32[3]);
+        csum += carry;
+
+        ulen = htonl((__u32) len);
+        csum += ulen;
+        carry = (csum < ulen);
+        csum += carry;
+
+        uproto = htonl(proto);
+        csum += uproto;
+        carry = (csum < uproto);
+        csum += carry;
+
+        return csum_fold(csum);
+}
+
+#endif
+#endif