source: npl/system/iptables/iptables-1.4.3.2-imq_xt.diff @ c5c522c

extensions/.IMQ-testx

@@ +1 @@
+#!/bin/sh
+# True if IMQ target patch is applied.
+[ -f $KERNEL_DIR/include/linux/netfilter/xt_IMQ.h ] && echo IMQ

extensions/libxt_IMQ.c

@@ +1 @@
+/* Shared library add-on to iptables to add IMQ target support. */
+#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_IMQ.h>
+
+/* Function which prints out usage message. */
+static void IMQ_help(void)
+{
+        printf(
+"IMQ target options:\n"
+"  --todev <N>          enqueue to imq<N>, defaults to 0\n");
+
+}
+
+static struct option IMQ_opts[] = {
+        { "todev", 1, 0, '1' },
+        { 0 }
+};
+
+/* Initialize the target. */
+static void IMQ_init(struct xt_entry_target *t)
+{
+        struct xt_imq_info *mr = (struct xt_imq_info*)t->data;
+
+        mr->todev = 0;
+}
+
+/* Function which parses command options; returns true if it
+   ate an option */
+static int IMQ_parse(int c, char **argv, int invert, unsigned int *flags,
+      const void *entry, struct xt_entry_target **target)
+{
+        struct xt_imq_info *mr = (struct xt_imq_info*)(*target)->data;
+        
+        switch(c) {
+        case '1':
+                if (xtables_check_inverse(optarg, &invert, NULL, 0))
+                        xtables_error(PARAMETER_PROBLEM,
+                                   "Unexpected `!' after --todev");
+                mr->todev=atoi(optarg);
+                break;
+        default:
+                return 0;
+        }
+        return 1;
+}
+
+/* Prints out the targinfo. */
+static void IMQ_print(const void *ip,
+      const struct xt_entry_target *target,
+      int numeric)
+{
+        struct xt_imq_info *mr = (struct xt_imq_info*)target->data;
+
+        printf("IMQ: todev %u ", mr->todev);
+}
+
+/* Saves the union ipt_targinfo in parsable form to stdout. */
+static void IMQ_save(const void *ip, const struct xt_entry_target *target)
+{
+        struct xt_imq_info *mr = (struct xt_imq_info*)target->data;
+
+        printf("--todev %u", mr->todev);
+}
+
+static struct xtables_target imq_target = {
+        .name           = "IMQ",
+        .version        = XTABLES_VERSION,
+        .family         = NFPROTO_IPV4,
+        .size           = XT_ALIGN(sizeof(struct xt_imq_info)),
+        .userspacesize  = XT_ALIGN(sizeof(struct xt_imq_info)),
+        .help           = IMQ_help,
+        .init           = IMQ_init,
+        .parse          = IMQ_parse,
+        .print          = IMQ_print,
+        .save           = IMQ_save,
+        .extra_opts     = IMQ_opts,
+};
+
+static struct xtables_target imq_target6 = {
+        .name           = "IMQ",
+        .version        = XTABLES_VERSION,
+        .family         = NFPROTO_IPV6,
+        .size           = XT_ALIGN(sizeof(struct xt_imq_info)),
+        .userspacesize  = XT_ALIGN(sizeof(struct xt_imq_info)),
+        .help           = IMQ_help,
+        .init           = IMQ_init,
+        .parse          = IMQ_parse,
+        .print          = IMQ_print,
+        .save           = IMQ_save,
+        .extra_opts     = IMQ_opts,
+};
+
+// void __attribute((constructor)) nf_ext_init(void){
+void _init(void){
+        xtables_register_target(&imq_target);
+        xtables_register_target(&imq_target6);
+}

include/linux/netfilter/xt_IMQ.h

@@ +1 @@
+#ifndef _XT_IMQ_H
+#define _XT_IMQ_H
+
+struct xt_imq_info {
+        unsigned int todev;     /* target imq device */
+};
+
+#endif /* _XT_IMQ_H */
+