tools: Add unidirectional test to operf

This adds a unidirectional test to operf, which is handy for testing
unidirectional streams.

Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>

1 files changed, 54 insertions, 15 deletions

diff --git a/src/tools/operf/operf_server.c b/src/tools/operf/operf_server.c
index 11eb92fc..de32f320 100644
--- a/src/tools/operf/operf_server.c
+++ b/src/tools/operf/operf_server.c
@@ -36,6 +36,8 @@
  * OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+bool stop;
+
 void shutdown_server(int signo, siginfo_t * info, void * c)
 {
         (void) info;
@@ -46,6 +48,7 @@ void shutdown_server(int signo, siginfo_t * info, void * c)
         case SIGTERM:
         case SIGHUP:
                 pthread_cancel(server.accept_pt);
+                stop = true;
         default:
                 return;
         }
@@ -58,7 +61,7 @@ void * cleaner_thread(void * o)
 
         (void) o;
 
-        while (true) {
+        while (!stop) {
                 clock_gettime(CLOCK_REALTIME, &now);
                 pthread_mutex_lock(&server.lock);
                 for (i = 0; i < OPERF_MAX_FLOWS; ++i)
@@ -73,18 +76,21 @@ void * cleaner_thread(void * o)
                 pthread_mutex_unlock(&server.lock);
                 sleep(1);
         }
+
+        return (void *) 0;
 }
 
-void * server_thread(void *o)
+void * server_thread(void * o)
 {
-        int msg_len = 0;
+        int             msg_len = 0;
         struct timespec timeout = {0, 100 * MILLION};
-        struct timespec now = {0, 0};
-        int fd;
+        struct timespec now     = {0, 0};
+        int             fd;
+        struct msg *    msg;
 
         (void) o;
 
-        while (fevent(server.flows, server.fq, &timeout))
+        while (!stop && fevent(server.flows, server.fq, &timeout))
                 while ((fd = fqueue_next(server.fq)) >= 0) {
                         msg_len = flow_read(fd, server.buffer, OPERF_BUF_SIZE);
                         if (msg_len < 0)
@@ -96,9 +102,21 @@ void * server_thread(void *o)
                         server.times[fd] = now;
                         pthread_mutex_unlock(&server.lock);
 
-                        if (flow_write(fd, server.buffer, msg_len) < 0) {
-                                printf("Error writing to flow (fd %d).\n", fd);
-                                flow_dealloc(fd);
+                        msg = (struct msg *) server.buffer;
+
+                        if (server.conf[fd].test_type == TEST_TYPE_UNI)
+                                printf("Seqno %d from fd %d: %zd.%06zu\n",
+                                       msg->id, fd,
+                                       (ssize_t) now.tv_sec,
+                                       (size_t) now.tv_nsec / 1000);
+
+                        if (server.conf[fd].test_type == TEST_TYPE_BI) {
+                                if (flow_write(fd, server.buffer,
+                                               msg_len) < 0) {
+                                        printf("Error writing to flow "
+                                               "(fd %d).\n", fd);
+                                        flow_dealloc(fd);
+                                }
                         }
                 }
 
@@ -110,12 +128,13 @@ void * accept_thread(void * o)
         int fd = 0;
         struct timespec now = {0, 0};
         qosspec_t qs;
+        int len = 0;
 
         (void) o;
 
         printf("Ouroboros perf server started.\n");
 
-        while (true) {
+        while (!stop) {
                 fd = flow_accept(&qs, NULL);
                 if (fd < 0) {
                         printf("Failed to accept flow.\n");
@@ -124,6 +143,27 @@ void * accept_thread(void * o)
 
                 printf("New flow %d.\n", fd);
 
+                /* Read test type. */
+                len = flow_read(fd, &(server.conf[fd]),
+                                sizeof(server.conf[fd]));
+                if (len == -ETIMEDOUT) {
+                        printf("Failed to read config message.\n");
+                        flow_dealloc(fd);
+                        break;
+                }
+
+                /* Check if length was correct. */
+                if (flow_read(fd, NULL, 0) != 0) {
+                        printf("Invalid config message.\n");
+                        flow_dealloc(fd);
+                        break;
+                }
+
+                if (server.conf[fd].test_type == TEST_TYPE_BI)
+                        printf("Doing a bidirectional test.\n");
+                else
+                        printf("Doing a unidirectional test.\n");
+
                 clock_gettime(CLOCK_REALTIME, &now);
 
                 pthread_mutex_lock(&server.lock);
@@ -161,20 +201,19 @@ int server_main(void)
                 return -1;
         }
 
+        stop = false;
+
         pthread_create(&server.cleaner_pt, NULL, cleaner_thread, NULL);
         pthread_create(&server.accept_pt, NULL, accept_thread, NULL);
         pthread_create(&server.server_pt, NULL, server_thread, NULL);
 
         pthread_join(server.accept_pt, NULL);
 
-        pthread_cancel(server.server_pt);
-        pthread_cancel(server.cleaner_pt);
+        pthread_join(server.server_pt, NULL);
+        pthread_join(server.cleaner_pt, NULL);
 
         fset_destroy(server.flows);
         fqueue_destroy(server.fq);
 
-        pthread_join(server.server_pt, NULL);
-        pthread_join(server.cleaner_pt, NULL);
-
         return 0;
 }