Merge commit 'origin/trunk@12184' into fedora

[iptables.git] / trunk / extensions / dscp_helper.c

diff --git a/trunk/extensions/dscp_helper.c b/trunk/extensions/dscp_helper.c
new file mode 100644 (file)
index 0000000..217df09
--- /dev/null
+++ b/trunk/extensions/dscp_helper.c
@@ -0,0 +1,81 @@
+/*
+ * DiffServ classname <-> DiffServ codepoint mapping functions.
+ *
+ * The latest list of the mappings can be found at:
+ * <http://www.iana.org/assignments/dscp-registry>
+ *
+ * This code is released under the GNU GPL v2, 1991
+ *
+ * Author: Iain Barnes
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <xtables.h>
+
+
+static const struct ds_class
+{
+       const char *name;
+       unsigned int dscp;
+} ds_classes[] =
+{
+       { "CS0", 0x00 },
+       { "CS1", 0x08 },
+       { "CS2", 0x10 },
+       { "CS3", 0x18 },
+       { "CS4", 0x20 },
+       { "CS5", 0x28 },
+       { "CS6", 0x30 },
+       { "CS7", 0x38 },
+       { "BE", 0x00 },
+       { "AF11", 0x0a },
+       { "AF12", 0x0c },
+       { "AF13", 0x0e },
+       { "AF21", 0x12 },
+       { "AF22", 0x14 },
+       { "AF23", 0x16 },
+       { "AF31", 0x1a },
+       { "AF32", 0x1c },
+       { "AF33", 0x1e },
+       { "AF41", 0x22 },
+       { "AF42", 0x24 },
+       { "AF43", 0x26 },
+       { "EF", 0x2e }
+};
+
+
+
+static unsigned int
+class_to_dscp(const char *name)
+{
+       unsigned int i;
+
+       for (i = 0; i < sizeof(ds_classes) / sizeof(struct ds_class); i++) {
+               if (!strncasecmp(name, ds_classes[i].name,
+                                       strlen(ds_classes[i].name)))
+                       return ds_classes[i].dscp;
+       }
+
+       exit_error(PARAMETER_PROBLEM,
+                       "Invalid DSCP value `%s'\n", name);
+}
+
+
+#if 0
+static const char *
+dscp_to_name(unsigned int dscp)
+{
+       int i;
+
+       for (i = 0; i < sizeof(ds_classes) / sizeof(struct ds_class); i++) {
+               if (dscp == ds_classes[i].dscp)
+                       return ds_classes[i].name;
+       }
+
+
+       exit_error(PARAMETER_PROBLEM,
+                       "Invalid DSCP value `%d'\n", dscp);
+}
+#endif
+