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
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
|
//
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
/**
* Benchmark program to check performance of 2 simultaneous links
*/
#include <uhd-dpdk.h>
#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include <sys/time.h>
#include <errno.h>
#include <arpa/inet.h>
#define NUM_MBUFS 4095
#define MBUF_CACHE_SIZE 315
#define BURST_SIZE 64
#define NUM_PORTS 2
#define TX_CREDITS 28
#define RX_CREDITS 64
#define BENCH_SPP 700
#define BENCH_IFG 220
static uint32_t last_seqno[NUM_PORTS];
static uint32_t dropped_packets[NUM_PORTS];
static uint32_t lasts[NUM_PORTS][16], drops[NUM_PORTS][16];
static uint32_t last_ackno[NUM_PORTS];
static uint32_t tx_seqno[NUM_PORTS];
static uint64_t tx_xfer[NUM_PORTS];
static void process_udp(int id, uint32_t *udp_data)
{
if (udp_data[0] != last_seqno[id] + 1) {
lasts[id][dropped_packets[id] & 0xf] = last_seqno[id];
drops[id][dropped_packets[id] & 0xf] = udp_data[0];
dropped_packets[id]++;
}
last_seqno[id] = udp_data[0];
last_ackno[id] = udp_data[1];
}
static void send_ctrl(struct uhd_dpdk_socket *sock, uint32_t run)
{
struct rte_mbuf *mbuf = NULL;
uhd_dpdk_request_tx_bufs(sock, &mbuf, 1);
if (unlikely(mbuf == NULL))
return;
uint32_t *tx_data = uhd_dpdk_buf_to_data(sock, mbuf);
tx_data[0] = (BENCH_SPP << 16) | (TX_CREDITS << 4) | run; // spp, tx_credits, run
tx_data[1] = (RX_CREDITS << 16) | (BENCH_IFG); // credits, ifg
mbuf->pkt_len = 8;
mbuf->data_len = 8;
uhd_dpdk_send(sock, &mbuf, 1);
}
static void send_udp(struct uhd_dpdk_socket *sock, int id, bool fc_only)
{
struct rte_mbuf *mbuf = NULL;
uhd_dpdk_request_tx_bufs(sock, &mbuf, 1);
if (unlikely(mbuf == NULL))
return;
uint32_t *tx_data = uhd_dpdk_buf_to_data(sock, mbuf);
tx_data[0] = fc_only ? tx_seqno[id] - 1 : tx_seqno[id];
tx_data[1] = last_seqno[id];
if (!fc_only) {
memset(&tx_data[2], last_seqno[id], 8*BENCH_SPP);
tx_xfer[id] += 8*BENCH_SPP;
}
mbuf->pkt_len = 8 + (fc_only ? 0 : 8*BENCH_SPP);
mbuf->data_len = 8 + (fc_only ? 0 : 8*BENCH_SPP);
uhd_dpdk_send(sock, &mbuf, 1);
if (!fc_only) {
tx_seqno[id]++;
}
}
static void bench(struct uhd_dpdk_socket **tx, struct uhd_dpdk_socket **rx, struct uhd_dpdk_socket **ctrl, uint32_t nb_ports)
{
uint64_t total_xfer[NUM_PORTS];
uint32_t id;
for (id = 0; id < nb_ports; id++) {
tx_seqno[id] = 1;
tx_xfer[id] = 0;
last_ackno[id] = 0;
last_seqno[id] = 0;
dropped_packets[id] = 0;
total_xfer[id] = 0;
}
sleep(1);
struct timeval bench_start, bench_end;
gettimeofday(&bench_start, NULL);
for (id = 0; id < nb_ports; id++) {
send_ctrl(ctrl[id], 0);
for (int pktno = 0; (pktno < TX_CREDITS*3/4); pktno++) {
send_udp(tx[id], id, false);
}
}
for (id = 0; id < nb_ports; id++) {
send_ctrl(ctrl[id], 1);
}
/*
* The test...
*/
uint64_t total_received = 0;
uint32_t consec_no_rx = 0;
while (total_received < 1000000 ) { //&& consec_no_rx < 10000) {
for (id = 0; id < nb_ports; id++) {
/* Get burst of RX packets, from first port of pair. */
struct rte_mbuf *bufs[BURST_SIZE];
const int64_t nb_rx = uhd_dpdk_recv(rx[id], bufs, BURST_SIZE);
if (unlikely(nb_rx <= 0)) {
consec_no_rx++;
if (consec_no_rx >= 100000) {
uint32_t skt_drops = 0;
uhd_dpdk_get_drop_count(rx[id], &skt_drops);
printf("TX seq %d, TX ack %d, RX seq %d, %d, drops!\n", tx_seqno[id], last_ackno[id], last_seqno[id], skt_drops);
consec_no_rx = 0;
break;
}
continue;
} else {
consec_no_rx = 0;
}
for (int buf = 0; buf < nb_rx; buf++) {
total_xfer[id] += bufs[buf]->pkt_len;
uint64_t ol_flags = bufs[buf]->ol_flags;
uint32_t *data = (uint32_t *) uhd_dpdk_buf_to_data(rx[id], bufs[buf]);
if (ol_flags == PKT_RX_IP_CKSUM_BAD) { /* FIXME: Deprecated/changed in later release */
printf("Buf %d: Bad IP cksum\n", buf);
} else {
process_udp(id, data);
}
}
/* Free buffers. */
for (int buf = 0; buf < nb_rx; buf++)
uhd_dpdk_free_buf(bufs[buf]);
total_received += nb_rx;
}
for (id = 0; id < nb_ports; id++) {
/* TX portion */
uint32_t window_end = last_ackno[id] + TX_CREDITS;
//uint32_t window_end = last_seqno[port] + TX_CREDITS;
if (window_end <= tx_seqno[id]) {
if (consec_no_rx == 9999) {
send_udp(tx[id], id, true);
}
//send_udp(tx[id], id, true);
;
} else {
for (int pktno = 0; (pktno < BURST_SIZE) && (tx_seqno[id] < window_end); pktno++) {
send_udp(tx[id], id, false);
}
}
}
}
for (id = 0; id < nb_ports; id++) {
send_ctrl(ctrl[id], 0);
}
gettimeofday(&bench_end, NULL);
printf("Benchmark complete\n\n");
for (id = 0; id < nb_ports; id++) {
printf("\n");
printf("Bytes received = %ld\n", total_xfer[id]);
printf("Bytes sent = %ld\n", tx_xfer[id]);
printf("Time taken = %ld us\n", (bench_end.tv_sec - bench_start.tv_sec)*1000000 + (bench_end.tv_usec - bench_start.tv_usec));
double elapsed_time = (bench_end.tv_sec - bench_start.tv_sec)*1000000 + (bench_end.tv_usec - bench_start.tv_usec);
elapsed_time *= 1.0e-6;
double elapsed_bytes = total_xfer[id];
printf("RX Performance = %e Gbps\n", elapsed_bytes*8.0/1.0e9/elapsed_time);
elapsed_bytes = tx_xfer[id];
printf("TX Performance = %e Gbps\n", elapsed_bytes*8.0/1.0e9/elapsed_time);
uint32_t skt_drops = 0;
uhd_dpdk_get_drop_count(rx[id], &skt_drops);
printf("Dropped %d packets\n", dropped_packets[id]);
printf("Socket reports dropped %d packets\n", skt_drops);
for (unsigned int i = 0; i < 16; i++) {
if (i >= dropped_packets[id])
break;
printf("Last(%u), Recv(%u)\n", lasts[id][i], drops[id][i]);
}
//printf("%d missed/dropped packets\n", errors);
printf("\n");
}
}
int main(int argc, char **argv)
{
int port_thread_mapping[2] = {1, 1};
int status = uhd_dpdk_init(argc, argv, 2, &port_thread_mapping[0], NUM_MBUFS, MBUF_CACHE_SIZE);
if (status) {
printf("%d: Something wrong?\n", status);
return status;
}
uint32_t eth_ip = htonl(0xc0a80008);
uint32_t eth_mask = htonl(0xffffff00);
status = uhd_dpdk_set_ipv4_addr(0, eth_ip, eth_mask);
if (status) {
printf("Error while setting IP0: %d\n", status);
return status;
}
status = uhd_dpdk_set_ipv4_addr(1, eth_ip, eth_mask);
if (status) {
printf("Error while setting IP1: %d\n", status);
return status;
}
struct uhd_dpdk_socket *eth_rx[2];
struct uhd_dpdk_socket *eth_tx[2];
struct uhd_dpdk_socket *eth_ctrl[2];
struct uhd_dpdk_sockarg_udp sockarg = {
.is_tx = false,
.local_port = htons(0xBEE7),
.remote_port = htons(0xBEE7),
.dst_addr = htonl(0xc0a80004)
};
eth_rx[0] = uhd_dpdk_sock_open(0, UHD_DPDK_SOCK_UDP, &sockarg);
if (!eth_rx[0]) {
printf("!eth0_rx\n");
return -ENODEV;
}
eth_rx[1] = uhd_dpdk_sock_open(1, UHD_DPDK_SOCK_UDP, &sockarg);
if (!eth_rx[1]) {
printf("!eth1_rx\n");
return -ENODEV;
}
sockarg.is_tx = true;
eth_tx[0] = uhd_dpdk_sock_open(0, UHD_DPDK_SOCK_UDP, &sockarg);
if (!eth_tx[0]) {
printf("!eth0_tx\n");
return -ENODEV;
}
eth_tx[1] = uhd_dpdk_sock_open(1, UHD_DPDK_SOCK_UDP, &sockarg);
if (!eth_tx[1]) {
printf("!eth1_tx\n");
return -ENODEV;
}
sockarg.local_port = htons(0xB4D);
sockarg.remote_port = htons(0xB4D);
eth_ctrl[0] = uhd_dpdk_sock_open(0, UHD_DPDK_SOCK_UDP, &sockarg);
if (!eth_ctrl[0]) {
printf("!eth0_ctrl\n");
return -ENODEV;
}
eth_ctrl[1] = uhd_dpdk_sock_open(1, UHD_DPDK_SOCK_UDP, &sockarg);
if (!eth_ctrl[1]) {
printf("!eth1_ctrl\n");
return -ENODEV;
}
bench(eth_tx, eth_rx, eth_ctrl, 2);
status = uhd_dpdk_sock_close(eth_rx[0]);
if (status) {
printf("Bad close RX0 %d\n", status);
return status;
}
status = uhd_dpdk_sock_close(eth_rx[1]);
if (status) {
printf("Bad close RX1 %d\n", status);
return status;
}
status = uhd_dpdk_sock_close(eth_tx[0]);
if (status) {
printf("Bad close TX0 %d\n", status);
return status;
}
status = uhd_dpdk_sock_close(eth_tx[1]);
if (status) {
printf("Bad close TX1 %d\n", status);
return status;
}
status = uhd_dpdk_sock_close(eth_ctrl[0]);
if (status) {
printf("Bad close Ctrl0 %d\n", status);
return status;
}
status = uhd_dpdk_sock_close(eth_ctrl[1]);
if (status) {
printf("Bad close Ctrl1 %d\n", status);
return status;
}
return status;
}
|
