Loading...
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 | /*
* Copyright (c) 2015 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <logging/log.h>
LOG_MODULE_DECLARE(net_zperf_sample, LOG_LEVEL_DBG);
#include <zephyr.h>
#include <misc/printk.h>
#include <net/net_core.h>
#include <net/net_ip.h>
#include <net/net_pkt.h>
#include "zperf.h"
#include "zperf_internal.h"
static u8_t sample_packet[sizeof(struct zperf_udp_datagram) +
sizeof(struct zperf_client_hdr_v1) +
PACKET_SIZE_MAX];
static inline void zperf_upload_decode_stat(const struct shell *shell,
struct net_pkt *pkt,
struct zperf_results *results)
{
NET_PKT_DATA_ACCESS_DEFINE(zperf_udp, struct zperf_udp_datagram);
NET_PKT_DATA_ACCESS_DEFINE(zperf_stat, struct zperf_server_hdr);
struct zperf_udp_datagram *hdr;
struct zperf_server_hdr *stat;
hdr = (struct zperf_udp_datagram *)
net_pkt_get_data(pkt, &zperf_udp);
if (!hdr) {
shell_fprintf(shell, SHELL_WARNING,
"Network packet too short\n");
return;
}
net_pkt_acknowledge_data(pkt, &zperf_udp);
stat = (struct zperf_server_hdr *)
net_pkt_get_data(pkt, &zperf_stat);
if (!stat) {
shell_fprintf(shell, SHELL_WARNING,
"Network packet too short\n");
return;
}
results->nb_packets_rcvd = ntohl(stat->datagrams);
results->nb_packets_lost = ntohl(stat->error_cnt);
results->nb_packets_outorder = ntohl(stat->outorder_cnt);
results->nb_bytes_sent = ntohl(stat->total_len2);
results->time_in_us = ntohl(stat->stop_usec) +
ntohl(stat->stop_sec) * USEC_PER_SEC;
results->jitter_in_us = ntohl(stat->jitter2) +
ntohl(stat->jitter1) * USEC_PER_SEC;
}
static void stat_received(struct net_context *context,
struct net_pkt *pkt,
union net_ip_header *ip_hdr,
union net_proto_header *proto_hdr,
int status,
void *user_data)
{
struct net_pkt **stat = user_data;
*stat = pkt;
}
static inline void zperf_upload_fin(const struct shell *shell,
struct net_context *context,
u32_t nb_packets,
u32_t end_time,
u32_t packet_size,
struct zperf_results *results)
{
struct net_pkt *stat = NULL;
struct zperf_udp_datagram *datagram;
struct zperf_client_hdr_v1 *hdr;
int loop = 2;
int ret;
while (!stat && loop-- > 0) {
datagram = (struct zperf_udp_datagram *)sample_packet;
/* Fill the packet header */
datagram->id = htonl(-nb_packets);
datagram->tv_sec = htonl(HW_CYCLES_TO_SEC(end_time));
datagram->tv_usec = htonl(HW_CYCLES_TO_USEC(end_time) %
USEC_PER_SEC);
hdr = (struct zperf_client_hdr_v1 *)(sample_packet +
sizeof(*datagram));
/* According to iperf documentation (in include/Settings.hpp),
* if the flags == 0, then the other values are ignored.
* But even if the values in the header are ignored, try
* to set there some meaningful values.
*/
hdr->flags = 0;
hdr->num_of_threads = htonl(1);
hdr->port = 0;
hdr->buffer_len = sizeof(sample_packet) -
sizeof(*datagram) - sizeof(*hdr);
hdr->bandwidth = 0;
hdr->num_of_bytes = htonl(packet_size);
/* Send the packet */
ret = net_context_send(context, sample_packet, packet_size,
NULL, K_NO_WAIT, NULL);
if (ret < 0) {
shell_fprintf(shell, SHELL_WARNING,
"Failed to send the packet (%d)\n",
ret);
continue;
}
/* Receive statistics */
stat = NULL;
ret = net_context_recv(context, stat_received,
K_SECONDS(2), &stat);
if (ret == -ETIMEDOUT) {
break;
}
}
/* Decode statistics */
if (stat) {
zperf_upload_decode_stat(shell, stat, results);
net_pkt_unref(stat);
}
/* Drain RX */
while (stat) {
stat = NULL;
ret = net_context_recv(context, stat_received,
K_NO_WAIT, &stat);
if (ret == -ETIMEDOUT) {
break;
}
if (stat) {
shell_fprintf(shell, SHELL_WARNING,
"Drain one spurious stat packet!\n");
net_pkt_unref(stat);
}
}
}
void zperf_udp_upload(const struct shell *shell,
struct net_context *context,
int port,
unsigned int duration_in_ms,
unsigned int packet_size,
unsigned int rate_in_kbps,
struct zperf_results *results)
{
u32_t packet_duration = (u32_t)(((u64_t) packet_size *
SEC_TO_HW_CYCLES(1) * 8U) /
(u64_t)(rate_in_kbps * 1024U));
u32_t duration = MSEC_TO_HW_CYCLES(duration_in_ms);
u32_t print_interval = SEC_TO_HW_CYCLES(1);
u32_t delay = packet_duration;
u32_t nb_packets = 0U;
u32_t start_time, last_print_time, last_loop_time, end_time;
if (packet_size > PACKET_SIZE_MAX) {
shell_fprintf(shell, SHELL_WARNING,
"Packet size too large! max size: %u\n",
PACKET_SIZE_MAX);
packet_size = PACKET_SIZE_MAX;
} else if (packet_size < sizeof(struct zperf_udp_datagram)) {
shell_fprintf(shell, SHELL_WARNING,
"Packet size set to the min size: %zu\n",
sizeof(struct zperf_udp_datagram));
packet_size = sizeof(struct zperf_udp_datagram);
}
/* Start the loop */
start_time = k_cycle_get_32();
last_print_time = start_time;
last_loop_time = start_time;
(void)memset(sample_packet, 'z', sizeof(sample_packet));
do {
struct zperf_udp_datagram *datagram;
struct zperf_client_hdr_v1 *hdr;
u32_t loop_time;
s32_t adjust;
int ret;
/* Timestamp */
loop_time = k_cycle_get_32();
/* Algorithm to maintain a given baud rate */
if (last_loop_time != loop_time) {
adjust = packet_duration - time_delta(last_loop_time,
loop_time);
} else {
/* It's the first iteration so no need for adjustment
*/
adjust = 0;
}
if (adjust >= 0 || -adjust < delay) {
delay += adjust;
} else {
delay = 0U; /* delay should never be a negative value */
}
last_loop_time = loop_time;
/* Fill the packet header */
datagram = (struct zperf_udp_datagram *)sample_packet;
datagram->id = htonl(nb_packets);
datagram->tv_sec = htonl(HW_CYCLES_TO_SEC(loop_time));
datagram->tv_usec =
htonl(HW_CYCLES_TO_USEC(loop_time) % USEC_PER_SEC);
hdr = (struct zperf_client_hdr_v1 *)(sample_packet +
sizeof(*datagram));
hdr->flags = 0;
hdr->num_of_threads = htonl(1);
hdr->port = htonl(port);
hdr->buffer_len = sizeof(sample_packet) -
sizeof(*datagram) - sizeof(*hdr);
hdr->bandwidth = htonl(rate_in_kbps);
hdr->num_of_bytes = htonl(packet_size);
/* Send the packet */
ret = net_context_send(context, sample_packet, packet_size,
NULL, K_NO_WAIT, NULL);
if (ret < 0) {
shell_fprintf(shell, SHELL_WARNING,
"Failed to send the packet (%d)\n",
ret);
break;
} else {
nb_packets++;
}
/* Print log every seconds */
if (time_delta(last_print_time, loop_time) > print_interval) {
shell_fprintf(shell, SHELL_WARNING,
"nb_packets=%u\tdelay=%u\tadjust=%d\n",
nb_packets, delay, adjust);
last_print_time = loop_time;
}
/* Wait */
#if defined(CONFIG_ARCH_POSIX)
k_busy_wait(K_MSEC(100));
#else
while (time_delta(loop_time, k_cycle_get_32()) < delay) {
k_yield();
}
#endif
} while (time_delta(start_time, last_loop_time) < duration);
end_time = k_cycle_get_32();
zperf_upload_fin(shell, context, nb_packets, end_time, packet_size,
results);
/* Add result coming from the client */
results->nb_packets_sent = nb_packets;
results->client_time_in_us =
HW_CYCLES_TO_USEC(time_delta(start_time, end_time));
results->packet_size = packet_size;
}
|