zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/app/iptables/extensions/libxt_DSCP.c b/ap/app/iptables/extensions/libxt_DSCP.c
new file mode 100755
index 0000000..ddb9c99
--- /dev/null
+++ b/ap/app/iptables/extensions/libxt_DSCP.c
@@ -0,0 +1,164 @@
+/* Shared library add-on to iptables for DSCP
+ *
+ * (C) 2000- 2002 by Matthew G. Marsh <mgm@paktronix.com>,
+ * Harald Welte <laforge@gnumonks.org>
+ *
+ * This program is distributed under the terms of GNU GPL v2, 1991
+ *
+ * libipt_DSCP.c borrowed heavily from libipt_TOS.c
+ *
+ * --set-class added by Iain Barnes
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+#include <xtables.h>
+#include <linux/netfilter/x_tables.h>
+#include <linux/netfilter/xt_DSCP.h>
+
+/* This is evil, but it's my code - HW*/
+#include "dscp_helper.c"
+
+static void DSCP_help(void)
+{
+ printf(
+"DSCP target options\n"
+" --set-dscp value Set DSCP field in packet header to value\n"
+" This value can be in decimal (ex: 32)\n"
+" or in hex (ex: 0x20)\n"
+" --set-dscp-class class Set the DSCP field in packet header to the\n"
+" value represented by the DiffServ class value.\n"
+" This class may be EF,BE or any of the CSxx\n"
+" or AFxx classes.\n"
+"\n"
+" These two options are mutually exclusive !\n"
+);
+}
+
+static const struct option DSCP_opts[] = {
+ { "set-dscp", 1, NULL, 'F' },
+ { "set-dscp-class", 1, NULL, 'G' },
+ { .name = NULL }
+};
+
+static void
+parse_dscp(const char *s, struct xt_DSCP_info *dinfo)
+{
+ unsigned int dscp;
+
+ if (!xtables_strtoui(s, NULL, &dscp, 0, UINT8_MAX))
+ xtables_error(PARAMETER_PROBLEM,
+ "Invalid dscp `%s'\n", s);
+
+ if (dscp > XT_DSCP_MAX)
+ xtables_error(PARAMETER_PROBLEM,
+ "DSCP `%d` out of range\n", dscp);
+
+ dinfo->dscp = dscp;
+}
+
+
+static void
+parse_class(const char *s, struct xt_DSCP_info *dinfo)
+{
+ unsigned int dscp = class_to_dscp(s);
+
+ /* Assign the value */
+ dinfo->dscp = dscp;
+}
+
+
+static int DSCP_parse(int c, char **argv, int invert, unsigned int *flags,
+ const void *entry, struct xt_entry_target **target)
+{
+ struct xt_DSCP_info *dinfo
+ = (struct xt_DSCP_info *)(*target)->data;
+
+ switch (c) {
+ case 'F':
+ if (*flags)
+ xtables_error(PARAMETER_PROBLEM,
+ "DSCP target: Only use --set-dscp ONCE!");
+ parse_dscp(optarg, dinfo);
+ *flags = 1;
+ break;
+ case 'G':
+ if (*flags)
+ xtables_error(PARAMETER_PROBLEM,
+ "DSCP target: Only use --set-dscp-class ONCE!");
+ parse_class(optarg, dinfo);
+ *flags = 1;
+ break;
+
+ default:
+ return 0;
+ }
+
+ return 1;
+}
+
+static void DSCP_check(unsigned int flags)
+{
+ if (!flags)
+ xtables_error(PARAMETER_PROBLEM,
+ "DSCP target: Parameter --set-dscp is required");
+}
+
+static void
+print_dscp(u_int8_t dscp, int numeric)
+{
+ printf("0x%02x ", dscp);
+}
+
+static void DSCP_print(const void *ip, const struct xt_entry_target *target,
+ int numeric)
+{
+ const struct xt_DSCP_info *dinfo =
+ (const struct xt_DSCP_info *)target->data;
+ printf("DSCP set ");
+ print_dscp(dinfo->dscp, numeric);
+}
+
+static void DSCP_save(const void *ip, const struct xt_entry_target *target)
+{
+ const struct xt_DSCP_info *dinfo =
+ (const struct xt_DSCP_info *)target->data;
+
+ printf("--set-dscp 0x%02x ", dinfo->dscp);
+}
+
+static struct xtables_target dscp_target = {
+ .family = NFPROTO_IPV4,
+ .name = "DSCP",
+ .version = XTABLES_VERSION,
+ .size = XT_ALIGN(sizeof(struct xt_DSCP_info)),
+ .userspacesize = XT_ALIGN(sizeof(struct xt_DSCP_info)),
+ .help = DSCP_help,
+ .parse = DSCP_parse,
+ .final_check = DSCP_check,
+ .print = DSCP_print,
+ .save = DSCP_save,
+ .extra_opts = DSCP_opts,
+};
+
+static struct xtables_target dscp_target6 = {
+ .family = NFPROTO_IPV6,
+ .name = "DSCP",
+ .version = XTABLES_VERSION,
+ .size = XT_ALIGN(sizeof(struct xt_DSCP_info)),
+ .userspacesize = XT_ALIGN(sizeof(struct xt_DSCP_info)),
+ .help = DSCP_help,
+ .parse = DSCP_parse,
+ .final_check = DSCP_check,
+ .print = DSCP_print,
+ .save = DSCP_save,
+ .extra_opts = DSCP_opts,
+};
+
+void _init(void)
+{
+ xtables_register_target(&dscp_target);
+ xtables_register_target(&dscp_target6);
+}