From cab0e5a0fed570407a3e35a246c784b82953f5bb Mon Sep 17 00:00:00 2001 From: Dimitri Staessens Date: Sat, 18 Nov 2017 04:12:52 +0100 Subject: tools: Send time in oping packets The oping tool now stores the time it sent the packet inside the SDU, simplifying the implementation. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders --- src/tools/oping/oping.c | 14 ++++--------- src/tools/oping/oping_client.c | 47 +++++++++++++++++------------------------- 2 files changed, 23 insertions(+), 38 deletions(-) (limited to 'src/tools/oping') diff --git a/src/tools/oping/oping.c b/src/tools/oping/oping.c index 6addbc58..18cc86ee 100644 --- a/src/tools/oping/oping.c +++ b/src/tools/oping/oping.c @@ -39,6 +39,7 @@ #define _POSIX_C_SOURCE 199506L #define __XSI_VISIBLE 500 +#include #include #include @@ -70,10 +71,6 @@ struct c { double rtt_avg; double rtt_m2; - /* needs locking */ - struct timespec * times; - pthread_mutex_t lock; - pthread_t reader_pt; pthread_t writer_pt; } client; @@ -92,7 +89,9 @@ struct s { struct oping_msg { uint32_t type; uint32_t id; -}; + uint64_t tv_sec; + uint64_t tv_nsec; +} __attribute__((packed)); #include "oping_client.c" @@ -177,11 +176,6 @@ int main(int argc, char ** argv) client.size = 64; } - if (client.count > 1000000) { - printf("Count truncated to 1 million SDUs.\n"); - client.count = 1000000; - } - ret = client_main(); } diff --git a/src/tools/oping/oping_client.c b/src/tools/oping/oping_client.c index 0117b793..d1d31242 100644 --- a/src/tools/oping/oping_client.c +++ b/src/tools/oping/oping_client.c @@ -68,13 +68,14 @@ void * reader(void * o) { struct timespec timeout = {2, 0}; struct timespec now = {0, 0}; + struct timespec sent; - char buf[OPING_BUF_SIZE]; + char buf[OPING_BUF_SIZE]; struct oping_msg * msg = (struct oping_msg *) buf; - int fd = *((int *) o); - int msg_len = 0; - double ms = 0; - double d = 0; + int fd = *((int *) o); + int msg_len = 0; + double ms = 0; + double d = 0; fccntl(fd, FLOWSRCVTIMEO, &timeout); @@ -86,12 +87,12 @@ void * reader(void * o) if (msg_len < 0) continue; - if (ntohl(msg->type) != ECHO_REPLY) { + if (ntoh32(msg->type) != ECHO_REPLY) { printf("Invalid message on fd %d.\n", fd); continue; } - if (ntohl(msg->id) >= client.count) { + if (ntoh32(msg->id) >= client.count) { printf("Invalid id.\n"); continue; } @@ -100,10 +101,10 @@ void * reader(void * o) clock_gettime(CLOCK_MONOTONIC, &now); - pthread_mutex_lock(&client.lock); - ms = ts_diff_us(&client.times[ntohl(msg->id)], &now) - / 1000.0; - pthread_mutex_unlock(&client.lock); + sent.tv_sec = ntoh64(msg->tv_sec); + sent.tv_nsec = ntoh64(msg->tv_nsec); + + ms = ts_diff_us(&sent, &now) / 1000.0; printf("%d bytes from %s: seq=%d time=%.3f ms\n", msg_len, @@ -150,14 +151,13 @@ void * writer(void * o) while (client.sent < client.count) { nanosleep(&wait, NULL); - msg->type = htonl(ECHO_REQUEST); - msg->id = htonl(client.sent); clock_gettime(CLOCK_MONOTONIC, &now); - pthread_mutex_lock(&client.lock); - client.times[client.sent++] = now; - pthread_mutex_unlock(&client.lock); + msg->type = hton32(ECHO_REQUEST); + msg->id = hton32(client.sent++); + msg->tv_sec = hton64(now.tv_sec); + msg->tv_nsec = hton64(now.tv_nsec); if (flow_write(*fdp, buf, client.size) == -1) { printf("Failed to send SDU.\n"); @@ -174,12 +174,6 @@ void * writer(void * o) static int client_init(void) { - client.times = malloc(sizeof(struct timespec) * client.count); - if (client.times == NULL) { - pthread_mutex_unlock(&client.lock); - return -ENOMEM; - } - client.sent = 0; client.rcvd = 0; client.rtt_min = FLT_MAX; @@ -187,18 +181,15 @@ static int client_init(void) client.rtt_avg = 0; client.rtt_m2 = 0; - pthread_mutex_init(&client.lock, NULL); - return 0; } -void client_fini(void) +static void client_fini(void) { - if (client.times != NULL) - free(client.times); + return; } -int client_main(void) +static int client_main(void) { struct sigaction sig_act; -- cgit v1.2.3