add siit for stateless ip and icmp translation to ipv6

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13729 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/siit/Makefile

@@ -0,0 +1,43 @@
+# 
+# Copyright (C) 2006 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+# $Id: Makefile 10203 2008-01-15 03:25:11Z matteo $
+
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+PKG_NAME:=siit
+PKG_VERSION:=1.1
+
+include $(INCLUDE_DIR)/package.mk
+
+define KernelPackage/siit
+  SUBMENU:=Network Devices
+  TITLE:=Stateless IP ICMP Translation Algorithm
+  FILES:=$(PKG_BUILD_DIR)/siit.$(LINUX_KMOD_SUFFIX)
+  AUTOLOAD:=$(call AutoLoad,50,siit)
+endef
+
+define KernelPackage/siit/description
+ Stateless IP ICMP Translation Algorithm
+endef
+
+define Build/Prepare
+	mkdir -p $(PKG_BUILD_DIR)
+	cp src/Makefile src/siit.h src/siit.c $(PKG_BUILD_DIR)/
+endef
+
+define Build/Compile
+	$(MAKE) -C $(LINUX_DIR) \
+		CROSS_COMPILE="$(TARGET_CROSS)" \
+		ARCH="$(LINUX_KARCH)" \
+		SUBDIRS="$(PKG_BUILD_DIR)" \
+		KERNELDIR=$(LINUX_DIR) \
+		CC="$(TARGET_CC)" \
+		modules
+endef
+
+$(eval $(call KernelPackage,siit))

package/siit/src/Makefile

@@ -0,0 +1,5 @@
+obj-m   := siit.o
+ifeq ($(MAKING_MODULES),1)
+-include $(TOPDIR)/Rules.make
+endif
+

package/siit/src/siit.h

@@ -0,0 +1,61 @@
+/*
+ * siit.h -- definitions for the SIIT module
+ *
+ *
+ */
+
+/*
+ * Constants
+ */
+
+/* SIIT_ETH control the name of SIIT interface:
+ * 0 - interface name is siit0,
+ * 1 - interface name is ethX.
+ */
+#define SIIT_ETH 0
+
+#define BUFF_SIZE 4096
+#define FRAG_BUFF_SIZE 1232     /* IPv6 max fragment size without IPv6 header 
+                                 * to fragmanet IPv4 if result IPv6 packet will be > 1280
+                                 */
+
+#define TRANSLATED_PREFIX 0x0000ffff /* third byte in IPv4-translated addr prefix */
+#define MAPPED_PREFIX 0x0000ffff     /* third byte in IPv4-mapped addr prefix */
+
+#define IP4_IP6_HDR_DIFF 20     /* diffirence between IPv4 and IPv6 headers */
+#define IP6_FRAGMENT_SIZE 8     /* size of Fragment Header */
+
+/* IPv6 header fields masks */
+#define IP6F_OFF_MASK       0xfff8  /* mask out offset from frag_off */
+#define IP6F_RESERVED_MASK  0x0006  /* reserved bits in frag_off */
+#define IP6F_MORE_FRAG      0x0001  /* more-fragments flag */
+
+
+
+/*
+ * Macros to help debugging
+ */
+
+#undef PDEBUG             /* undef it, just in case */
+#ifdef SIIT_DEBUG
+#  ifdef __KERNEL__
+     /* This one if debugging is on, and kernel space */
+#    define PDEBUG(fmt, args...) printk(KERN_DEBUG "siit: " fmt, ## args)
+#  else
+     /* This one for user space */
+#    define PDEBUG(fmt, args...) fprintf(stderr, fmt, ## args)
+#  endif
+#else
+#  define PDEBUG(fmt, args...) /* not debugging: nothing */
+#endif
+
+#undef PDEBUGG
+#define PDEBUGG(fmt, args...)
+
+
+
+
+
+
+
+