Annotation of embedaddon/bmon/src/in_dummy.c, revision 1.1.1.1
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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