1 /* 2 * Copyright (c) 2003-2013 Patrick McHardy <kaber (at) trash.net> 3 */ 4 5 #include <stdio.h> 6 #include <xtables.h> 7 #include <linux/netfilter/xt_CLASSIFY.h> 8 #include <linux/pkt_sched.h> 9 10 enum { 11 O_SET_CLASS = 0, 12 }; 13 14 static void 15 CLASSIFY_help(void) 16 { 17 printf( 18 "CLASSIFY target options:\n" 19 "--set-class MAJOR:MINOR Set skb->priority value (always hexadecimal!)\n"); 20 } 21 22 static const struct xt_option_entry CLASSIFY_opts[] = { 23 {.name = "set-class", .id = O_SET_CLASS, .type = XTTYPE_STRING, 24 .flags = XTOPT_MAND}, 25 XTOPT_TABLEEND, 26 }; 27 28 static int CLASSIFY_string_to_priority(const char *s, unsigned int *p) 29 { 30 unsigned int i, j; 31 32 if (sscanf(s, "%x:%x", &i, &j) != 2) 33 return 1; 34 35 *p = TC_H_MAKE(i<<16, j); 36 return 0; 37 } 38 39 static void CLASSIFY_parse(struct xt_option_call *cb) 40 { 41 struct xt_classify_target_info *clinfo = cb->data; 42 43 xtables_option_parse(cb); 44 if (CLASSIFY_string_to_priority(cb->arg, &clinfo->priority)) 45 xtables_error(PARAMETER_PROBLEM, 46 "Bad class value \"%s\"", cb->arg); 47 } 48 49 static void 50 CLASSIFY_print_class(unsigned int priority, int numeric) 51 { 52 printf(" %x:%x", TC_H_MAJ(priority)>>16, TC_H_MIN(priority)); 53 } 54 55 static void 56 CLASSIFY_print(const void *ip, 57 const struct xt_entry_target *target, 58 int numeric) 59 { 60 const struct xt_classify_target_info *clinfo = 61 (const struct xt_classify_target_info *)target->data; 62 printf(" CLASSIFY set"); 63 CLASSIFY_print_class(clinfo->priority, numeric); 64 } 65 66 static void 67 CLASSIFY_save(const void *ip, const struct xt_entry_target *target) 68 { 69 const struct xt_classify_target_info *clinfo = 70 (const struct xt_classify_target_info *)target->data; 71 72 printf(" --set-class %.4x:%.4x", 73 TC_H_MAJ(clinfo->priority)>>16, TC_H_MIN(clinfo->priority)); 74 } 75 76 static struct xtables_target classify_target = { 77 .family = NFPROTO_UNSPEC, 78 .name = "CLASSIFY", 79 .version = XTABLES_VERSION, 80 .size = XT_ALIGN(sizeof(struct xt_classify_target_info)), 81 .userspacesize = XT_ALIGN(sizeof(struct xt_classify_target_info)), 82 .help = CLASSIFY_help, 83 .print = CLASSIFY_print, 84 .save = CLASSIFY_save, 85 .x6_parse = CLASSIFY_parse, 86 .x6_options = CLASSIFY_opts, 87 }; 88 89 void _init(void) 90 { 91 xtables_register_target(&classify_target); 92 } 93
