1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Generate packets
*
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <LongBow/runtime.h>
typedef enum {
MODE_SEND,
MODE_REPLY
} PktGenMode;
typedef enum {
ENCAP_ETHER,
ENCAP_UDP
} PktGenEncap;
typedef enum {
PKTGEN_STREAM,
PKTGEN_STOPWAIT
} PktGenFlow;
typedef struct {
PktGenMode mode;
PktGenEncap encap;
PktGenFlow flow;
char *ifname;
char *etherOrIp;
char *etherType;
unsigned count;
struct timeval startTime;
struct timeval stopTime;
unsigned packetCount;
} PktGen;
// ======================================================================
static void
usage(void)
{
printf("usage: \n");
printf(" This program functions as a requester and a responder. They operate in a pair.\n");
printf(" The test can run over raw Ethernet encapsulation or over UDP\n");
printf(" The <count> parameter can be an integer or use a 'kmg' suffix for 1000, 1E+6, or 1E+9\n");
printf("\n");
printf(" pktgen send ether <ifname> <dstmac> [ethertype] count <n> (stream | stopwait)\n");
printf(" pktgen reply ether <ifname> [count <n>]\n");
printf("\n");
printf(" This mode sends either a stream or stop-and-wait request to an Ethernet peer\n");
printf(" pktgen send udp <ifname> <dstip> <dstport> count <n> (stream | stopwait)\n");
printf(" pktgen reply udp <ifname> [count <n>]\n");
printf("\n");
printf(" Examples:\n");
printf(" This uses the standard Ethertype of 0x0801. The replier will stay running forever.\n");
printf(" pktgen send ether em1 bc:30:5b:f2:2f:60 count 1M stream\n");
printf(" pktgen reply ether em1\n");
printf("\n");
printf(" This uses a custom ethertype. The replier will stay running forever.\n");
printf(" pktgen send ether em1 bc:30:5b:f2:2f:60 0x9000 count 1M stream\n");
printf(" pktgen reply ether em1\n");
printf("\n");
printf(" An example with UDP\n");
printf(" pktgen send udp em1 10.1.0.2 9695 count 1M stopwait\n");
printf(" pktgen reply udp em1\n");
printf("\n");
}
static PktGen
parseCommandLine(int argc, char *argv[argc])
{
PktGen pktgen;
memset(&pktgen, 0, sizeof(PktGen));
usage();
return pktgen;
}
// ======================================================================
static void
generateEther(PktGen *pktgen)
{
printf("Generating %u ethernet interest messages\n", pktgen->count);
}
static void
replyEther(PktGen *pktgen)
{
printf("replying up to %u ethernet content objects messages\n", pktgen->count);
}
// ======================================================================
static void
generateUdp(PktGen *pktgen)
{
printf("Generating %u UDP interest messages\n", pktgen->count);
}
static void
replyUdp(PktGen *pktgen)
{
printf("replying up to %u UDP content objects messages\n", pktgen->count);
}
// ======================================================================
static void
displayStatistics(PktGen *pktgen)
{
printf("stats.... coming soon\n");
}
// ======================================================================
static void
runSender(PktGen *pktgen)
{
switch (pktgen->encap) {
case ENCAP_ETHER:
generateEther(pktgen);
break;
case ENCAP_UDP:
generateUdp(pktgen);
break;
default:
trapIllegalValue(pktgen.encap, "Unknown encapsulation: %d", pktgen->encap);
}
}
static void
runReplier(PktGen *pktgen)
{
switch (pktgen->encap) {
case ENCAP_ETHER:
replyEther(pktgen);
break;
case ENCAP_UDP:
replyUdp(pktgen);
break;
default:
trapIllegalValue(pktgen.encap, "Unknown encapsulation: %d", pktgen->encap);
}
}
// ======================================================================
int
main(int argc, char *argv[argc])
{
PktGen pktgen = parseCommandLine(argc, argv);
switch (pktgen.mode) {
case MODE_SEND:
runSender(&pktgen);
break;
case MODE_REPLY:
runReplier(&pktgen);
break;
default:
trapIllegalValue(pktgen.mode, "Unknown mode: %d", pktgen.mode);
}
displayStatistics(&pktgen);
}
|
