| /* |
| * tc_stab.c "tc qdisc ... stab *". |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * Authors: Jussi Kivilinna, <jussi.kivilinna@mbnet.fi> |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <syslog.h> |
| #include <fcntl.h> |
| #include <math.h> |
| #include <sys/socket.h> |
| #include <sys/param.h> |
| #include <netinet/in.h> |
| #include <arpa/inet.h> |
| #include <string.h> |
| #include <malloc.h> |
| |
| #include "utils.h" |
| #include "tc_util.h" |
| #include "tc_core.h" |
| #include "tc_common.h" |
| |
| static void stab_help(void) |
| { |
| fprintf(stderr, |
| "Usage: ... stab [ mtu BYTES ] [ tsize SLOTS ] [ mpu BYTES ] \n" |
| " [ overhead BYTES ] [ linklayer TYPE ] ...\n" |
| " mtu : max packet size we create rate map for {2047}\n" |
| " tsize : how many slots should size table have {512}\n" |
| " mpu : minimum packet size used in rate computations\n" |
| " overhead : per-packet size overhead used in rate computations\n" |
| " linklayer : adapting to a linklayer e.g. atm\n" |
| "Example: ... stab overhead 20 linklayer atm\n"); |
| |
| return; |
| } |
| |
| int check_size_table_opts(struct tc_sizespec *s) |
| { |
| return s->linklayer >= LINKLAYER_ETHERNET || s->mpu != 0 || |
| s->overhead != 0; |
| } |
| |
| int parse_size_table(int *argcp, char ***argvp, struct tc_sizespec *sp) |
| { |
| char **argv = *argvp; |
| int argc = *argcp; |
| struct tc_sizespec s; |
| |
| memset(&s, 0, sizeof(s)); |
| |
| NEXT_ARG(); |
| if (matches(*argv, "help") == 0) { |
| stab_help(); |
| return -1; |
| } |
| while (argc > 0) { |
| if (matches(*argv, "mtu") == 0) { |
| NEXT_ARG(); |
| if (s.mtu) |
| duparg("mtu", *argv); |
| if (get_u32(&s.mtu, *argv, 10)) |
| invarg("mtu", "invalid mtu"); |
| } else if (matches(*argv, "mpu") == 0) { |
| NEXT_ARG(); |
| if (s.mpu) |
| duparg("mpu", *argv); |
| if (get_u32(&s.mpu, *argv, 10)) |
| invarg("mpu", "invalid mpu"); |
| } else if (matches(*argv, "overhead") == 0) { |
| NEXT_ARG(); |
| if (s.overhead) |
| duparg("overhead", *argv); |
| if (get_integer(&s.overhead, *argv, 10)) |
| invarg("overhead", "invalid overhead"); |
| } else if (matches(*argv, "tsize") == 0) { |
| NEXT_ARG(); |
| if (s.tsize) |
| duparg("tsize", *argv); |
| if (get_u32(&s.tsize, *argv, 10)) |
| invarg("tsize", "invalid table size"); |
| } else if (matches(*argv, "linklayer") == 0) { |
| NEXT_ARG(); |
| if (s.linklayer != LINKLAYER_UNSPEC) |
| duparg("linklayer", *argv); |
| if (get_linklayer(&s.linklayer, *argv)) |
| invarg("linklayer", "invalid linklayer"); |
| } else |
| break; |
| argc--; argv++; |
| } |
| |
| if (!check_size_table_opts(&s)) |
| return -1; |
| |
| *sp = s; |
| *argvp = argv; |
| *argcp = argc; |
| return 0; |
| } |
| |
| void print_size_table(FILE *fp, const char *prefix, struct rtattr *rta) |
| { |
| struct rtattr *tb[TCA_STAB_MAX + 1]; |
| SPRINT_BUF(b1); |
| |
| parse_rtattr_nested(tb, TCA_STAB_MAX, rta); |
| |
| if (tb[TCA_STAB_BASE]) { |
| struct tc_sizespec s = {0}; |
| memcpy(&s, RTA_DATA(tb[TCA_STAB_BASE]), |
| MIN(RTA_PAYLOAD(tb[TCA_STAB_BASE]), sizeof(s))); |
| |
| fprintf(fp, "%s", prefix); |
| if (s.linklayer) |
| fprintf(fp, "linklayer %s ", |
| sprint_linklayer(s.linklayer, b1)); |
| if (s.overhead) |
| fprintf(fp, "overhead %d ", s.overhead); |
| if (s.mpu) |
| fprintf(fp, "mpu %u ", s.mpu); |
| if (s.mtu) |
| fprintf(fp, "mtu %u ", s.mtu); |
| if (s.tsize) |
| fprintf(fp, "tsize %u ", s.tsize); |
| } |
| |
| #if 0 |
| if (tb[TCA_STAB_DATA]) { |
| unsigned i, j, dlen; |
| __u16 *data = RTA_DATA(tb[TCA_STAB_DATA]); |
| dlen = RTA_PAYLOAD(tb[TCA_STAB_DATA]) / sizeof(__u16); |
| |
| fprintf(fp, "\n%sstab data:", prefix); |
| for (i = 0; i < dlen/12; i++) { |
| fprintf(fp, "\n%s %3u:", prefix, i * 12); |
| for (j = 0; i * 12 + j < dlen; j++) |
| fprintf(fp, " %05x", data[i * 12 + j]); |
| } |
| } |
| #endif |
| } |