release/src/router/iproute2/tc/q_esfq.c

   1 /*
   2  * q_esfq.c             ESFQ.
   3  *
   4  *              This program is free software; you can redistribute it and/or
   5  *              modify it under the terms of the GNU General Public License
   6  *              as published by the Free Software Foundation; either version
   7  *              2 of the License, or (at your option) any later version.
   8  *
   9  * Authors:     Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
  10  *
  11  * Changes:     Alexander Atanasov, <alex@ssi.bg>
  12  *              Alexander Clouter, <alex@digriz.org.uk>
  13  *              Corey Hickey, <bugfood-c@fatooh.org>
  14  *
  15  */
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <unistd.h>
  20 #include <syslog.h>
  21 #include <fcntl.h>
  22 #include <math.h>
  23 #include <sys/socket.h>
  24 #include <netinet/in.h>
  25 #include <arpa/inet.h>
  26 #include <string.h>
  27
  28 #include "utils.h"
  29 #include "tc_util.h"
  30
  31 static void explain(void)
  32 {
  33         fprintf(stderr, "Usage: ... esfq [ perturb SECS ] [ quantum BYTES ] [ depth FLOWS ]\n\t[ divisor HASHBITS ] [ limit PKTS ] [ hash HASHTYPE]\n");
  34         fprintf(stderr,"Where: \n");
  35         fprintf(stderr,"HASHTYPE := { classic | src | dst | fwmark | ctorigdst | ctorigsrc | ctrepldst | ctreplsrc | ctnatchg }\n");
  36 }
  37
  38 static void explain1(char *arg)
  39 {
  40     fprintf(stderr, "Illegal \"%s\"\n", arg);
  41     explain();
  42 }
  43
  44 #define usage() return(-1)
  45
  46 static int esfq_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
  47 {
  48         int ok=0;
  49         struct tc_esfq_qopt opt;
  50
  51         memset(&opt, 0, sizeof(opt));
  52
  53         opt.hash_kind= TCA_SFQ_HASH_CLASSIC;
  54
  55         while (argc > 0) {
  56                 if (strcmp(*argv, "quantum") == 0) {
  57                         NEXT_ARG();
  58                         if (get_size(&opt.quantum, *argv)) {
  59                                 explain1("quantum"); return -1;
  60                         }
  61                         ok++;
  62                 } else if (strcmp(*argv, "perturb") == 0) {
  63                         NEXT_ARG();
  64                         if (get_integer(&opt.perturb_period, *argv, 0)) {
  65                                 explain1("perturb"); return -1;
  66                         }
  67                         ok++;
  68                 } else if (strcmp(*argv, "depth") == 0) {
  69                         NEXT_ARG();
  70                         if (get_integer((int *) &opt.flows, *argv, 0)) {
  71                                 explain1("depth"); return -1;
  72                         }
  73                         ok++;
  74                 } else if (strcmp(*argv, "divisor") == 0) {
  75                         NEXT_ARG();
  76                         if (get_integer((int *) &opt.divisor, *argv, 0)) {
  77                                 explain1("divisor"); return -1;
  78                         }
  79                         if(opt.divisor >= 14) {
  80                                 fprintf(stderr, "Illegal \"divisor\": must be < 14\n");
  81                                 return -1;
  82                         }
  83                         opt.divisor=pow(2,opt.divisor);
  84                         ok++;
  85                 } else if (strcmp(*argv, "limit") == 0) {
  86                         NEXT_ARG();
  87                         if (get_integer((int *) &opt.limit, *argv, 0)) {
  88                                 explain1("limit"); return -1;
  89                         }
  90                         ok++;
  91                 } else if (strcmp(*argv, "hash") == 0) {
  92                         NEXT_ARG();
  93                         if(strcmp(*argv, "classic") == 0) {
  94                                 opt.hash_kind= TCA_SFQ_HASH_CLASSIC;
  95                         } else
  96                         if(strcmp(*argv, "dst") == 0) {
  97                                 opt.hash_kind= TCA_SFQ_HASH_DST;
  98                         } else
  99                         if(strcmp(*argv, "src") == 0) {
 100                                 opt.hash_kind= TCA_SFQ_HASH_SRC;
 101                         } else
 102                         if(strcmp(*argv, "fwmark") == 0) {
 103                                 opt.hash_kind= TCA_SFQ_HASH_FWMARK;
 104                         } else
 105                         if(strcmp(*argv, "ctorigsrc") == 0) {
 106                                 opt.hash_kind= TCA_SFQ_HASH_CTORIGSRC;
 107                         } else
 108                         if(strcmp(*argv, "ctorigdst") == 0) {
 109                                 opt.hash_kind= TCA_SFQ_HASH_CTORIGDST;
 110                         } else
 111                         if(strcmp(*argv, "ctreplsrc") == 0) {
 112                                 opt.hash_kind= TCA_SFQ_HASH_CTREPLSRC;
 113                         } else
 114                         if(strcmp(*argv, "ctrepldst") == 0) {
 115                                 opt.hash_kind= TCA_SFQ_HASH_CTREPLDST;
 116                         } else
 117                         if(strcmp(*argv, "ctnatchg") == 0) {
 118                                 opt.hash_kind= TCA_SFQ_HASH_CTNATCHG;
 119                         } else {
 120                                 explain1("hash"); return -1;
 121                         }
 122                         ok++;
 123                 } else if (strcmp(*argv, "help") == 0) {
 124                         explain();
 125                         return -1;
 126                 } else {
 127                         fprintf(stderr, "What is \"%s\"?\n", *argv);
 128                         explain();
 129                         return -1;
 130                 }
 131                 argc--; argv++;
 132         }
 133
 134         if (ok)
 135                 addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
 136         return 0;
 137 }
 138
 139 static int esfq_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
 140 {
 141         struct tc_esfq_qopt *qopt;
 142         SPRINT_BUF(b1);
 143
 144         if (opt == NULL)
 145                 return 0;
 146
 147         if (RTA_PAYLOAD(opt)  < sizeof(*qopt))
 148                 return -1;
 149         qopt = RTA_DATA(opt);
 150         fprintf(f, "quantum %s ", sprint_size(qopt->quantum, b1));
 151         if (show_details) {
 152                 fprintf(f, "limit %up flows %u/%u ",
 153                         qopt->limit, qopt->flows, qopt->divisor);
 154         }
 155         if (qopt->perturb_period)
 156                 fprintf(f, "perturb %dsec ", qopt->perturb_period);
 157
 158                 fprintf(f,"hash: ");
 159         switch(qopt->hash_kind)
 160         {
 161         case TCA_SFQ_HASH_CLASSIC:
 162                 fprintf(f,"classic");
 163                 break;
 164         case TCA_SFQ_HASH_DST:
 165                 fprintf(f,"dst");
 166                 break;
 167         case TCA_SFQ_HASH_SRC:
 168                 fprintf(f,"src");
 169                 break;
 170         case TCA_SFQ_HASH_FWMARK:
 171                 fprintf(f,"fwmark");
 172                 break;
 173         case TCA_SFQ_HASH_CTORIGSRC:
 174                 fprintf(f,"ctorigsrc");
 175                 break;
 176         case TCA_SFQ_HASH_CTORIGDST:
 177                 fprintf(f,"ctorigdst");
 178                 break;
 179         case TCA_SFQ_HASH_CTREPLSRC:
 180                 fprintf(f,"ctreplsrc");
 181                 break;
 182         case TCA_SFQ_HASH_CTREPLDST:
 183                 fprintf(f,"ctrepldst");
 184                 break;
 185         case TCA_SFQ_HASH_CTNATCHG:
 186                 fprintf(f,"ctnatchg");
 187                 break;
 188         default:
 189                 fprintf(f,"Unknown");
 190         }
 191         return 0;
 192 }
 193
 194 static int esfq_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstats)
 195 {
 196         return 0;
 197 }
 198
 199
 200 struct qdisc_util esfq_util = {
 201         NULL,
 202         "esfq",
 203         esfq_parse_opt,
 204         esfq_print_opt,
 205         esfq_print_xstats,
 206 };