Annotation of embedaddon/bmon/src/in_dummy.c, revision 1.1
1.1 ! misho 1: /*
! 2: * in_dummy.c Dummy Input Method
! 3: *
! 4: * Copyright (c) 2001-2004 Thomas Graf <tgraf@suug.ch>
! 5: *
! 6: * Permission is hereby granted, free of charge, to any person obtaining a
! 7: * copy of this software and associated documentation files (the "Software"),
! 8: * to deal in the Software without restriction, including without limitation
! 9: * the rights to use, copy, modify, merge, publish, distribute, sublicense,
! 10: * and/or sell copies of the Software, and to permit persons to whom the
! 11: * Software is furnished to do so, subject to the following conditions:
! 12: *
! 13: * The above copyright notice and this permission notice shall be included
! 14: * in all copies or substantial portions of the Software.
! 15: *
! 16: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
! 17: * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
! 18: * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
! 19: * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
! 20: * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
! 21: * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
! 22: * DEALINGS IN THE SOFTWARE.
! 23: */
! 24:
! 25: #include <bmon/bmon.h>
! 26: #include <bmon/input.h>
! 27: #include <bmon/node.h>
! 28: #include <bmon/item.h>
! 29: #include <bmon/utils.h>
! 30:
! 31: static b_cnt_t c_rx_b_inc = 1000000000;
! 32: static b_cnt_t c_tx_b_inc = 80000000;
! 33: static b_cnt_t c_rx_p_inc = 1000;
! 34: static b_cnt_t c_tx_p_inc = 800;
! 35: static int c_numdev = 5;
! 36: static int c_randomize = 0;
! 37: static int c_mtu = 1540;
! 38: static int c_maxpps = 100000;
! 39:
! 40: static void dummy_read(void)
! 41: {
! 42: int n;
! 43:
! 44: for (n = 0; n < c_numdev; n++) {
! 45: char ifname[IFNAMSIZ];
! 46: item_t *it;
! 47:
! 48: snprintf(ifname, sizeof(ifname), "dummy%d", n);
! 49:
! 50: it = lookup_item(get_local_node(), ifname, 0, 0);
! 51: if (it == NULL)
! 52: return;
! 53:
! 54: it->i_major_attr = BYTES;
! 55: it->i_minor_attr = PACKETS;
! 56:
! 57: if (c_randomize) {
! 58: b_cnt_t rx = rand() % c_maxpps;
! 59: b_cnt_t tx = rand() % c_maxpps;
! 60:
! 61: update_attr(it, PACKETS, rx, tx, RX_PROVIDED | TX_PROVIDED);
! 62: update_attr(it, BYTES, rx * (rand() % c_mtu),
! 63: tx * (rand() % c_mtu), RX_PROVIDED | TX_PROVIDED);
! 64: } else {
! 65: update_attr(it, PACKETS, c_rx_p_inc, c_tx_p_inc,
! 66: RX_PROVIDED | TX_PROVIDED);
! 67: update_attr(it, BYTES, c_rx_b_inc, c_tx_b_inc,
! 68: RX_PROVIDED | TX_PROVIDED);
! 69: }
! 70:
! 71: notify_update(it, NULL);
! 72: increase_lifetime(it, 1);
! 73: }
! 74: }
! 75:
! 76: static void print_help(void)
! 77: {
! 78: printf(
! 79: "dummy - Statistic generator module (dummy)\n" \
! 80: "\n" \
! 81: " Basic statistic generator for testing purposes. Can produce a\n" \
! 82: " constant or random statistic flow with configurable parameters.\n" \
! 83: " Author: Thomas Graf <tgraf@suug.ch>\n" \
! 84: "\n" \
! 85: " Options:\n" \
! 86: " rxb=NUM RX bytes increment amount (default: 10^9)\n" \
! 87: " txb=NUM TX bytes increment amount (default: 8*10^7)\n" \
! 88: " rxp=NUM RX packets increment amount (default: 1K)\n" \
! 89: " txp=NUM TX packets increment amount (default: 800)\n" \
! 90: " num=NUM Number of devices (default: 5)\n" \
! 91: " randomize Randomize counters (default: off)\n" \
! 92: " seed=NUM Seed for randomizer (default: time(0))\n" \
! 93: " mtu=NUM Maximal Transmission Unit (default: 1540)\n" \
! 94: " maxpps=NUM Upper limit for packets per second (default: 100K)\n" \
! 95: "\n" \
! 96: " Randomizer:\n" \
! 97: " RX-packets := Rand() %% maxpps\n" \
! 98: " TX-packets := Rand() %% maxpps\n" \
! 99: " RX-bytes := RX-packets * (Rand() %% mtu)\n" \
! 100: " TX-bytes := TX-packets * (Rand() %% mtu)\n");
! 101: }
! 102:
! 103: static void dummy_set_opts(tv_t *attrs)
! 104: {
! 105: while (attrs) {
! 106: if (!strcasecmp(attrs->type, "rxb") && attrs->value)
! 107: c_rx_b_inc = strtol(attrs->value, NULL, 0);
! 108: else if (!strcasecmp(attrs->type, "txb") && attrs->value)
! 109: c_tx_b_inc = strtol(attrs->value, NULL, 0);
! 110: else if (!strcasecmp(attrs->type, "rxp") && attrs->value)
! 111: c_rx_p_inc = strtol(attrs->value, NULL, 0);
! 112: else if (!strcasecmp(attrs->type, "txp") && attrs->value)
! 113: c_tx_p_inc = strtol(attrs->value, NULL, 0);
! 114: else if (!strcasecmp(attrs->type, "num") && attrs->value)
! 115: c_numdev = strtol(attrs->value, NULL, 0);
! 116: else if (!strcasecmp(attrs->type, "randomize")) {
! 117: c_randomize = 1;
! 118: srand(time(0));
! 119: } else if (!strcasecmp(attrs->type, "seed") && attrs->value)
! 120: srand(strtol(attrs->value, NULL, 0));
! 121: else if (!strcasecmp(attrs->type, "mtu") && attrs->value)
! 122: c_mtu = strtol(attrs->value, NULL, 0);
! 123: else if (!strcasecmp(attrs->type, "maxpps") && attrs->value)
! 124: c_maxpps = strtol(attrs->value, NULL, 0);
! 125: else if (!strcasecmp(attrs->type, "help")) {
! 126: print_help();
! 127: exit(0);
! 128: }
! 129:
! 130: attrs = attrs->next;
! 131: }
! 132: }
! 133:
! 134: static int dummy_probe(void)
! 135: {
! 136: return 1;
! 137: }
! 138:
! 139: static struct input_module dummy_ops = {
! 140: .im_name = "dummy",
! 141: .im_read = dummy_read,
! 142: .im_set_opts = dummy_set_opts,
! 143: .im_probe = dummy_probe,
! 144: .im_no_default = 1,
! 145: };
! 146:
! 147: static void __init dummy_init(void)
! 148: {
! 149: register_input_module(&dummy_ops);
! 150: }
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