tools: Add operf tool

This tool allows bidirectional bandwidth measurement between a client
and server application. The server reflects all traffic back to the
client. The traffic can be capped at a certain rate or set to flood.

1 files changed, 179 insertions, 0 deletions

diff --git a/src/tools/operf/operf.c b/src/tools/operf/operf.c
new file mode 100644
index 00000000..b52109cf
--- /dev/null
+++ b/src/tools/operf/operf.c
@@ -0,0 +1,179 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * Ouroboros perf application
+ *
+ *    Dimitri Staessens <dimitri.staessens@intec.ugent.be>
+ *    Sander Vrijders   <sander.vrijders@intec.ugent.be>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _POSIX_C_SOURCE 199506L
+
+#include <ouroboros/fqueue.h>
+#include <ouroboros/dev.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <pthread.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#define OPERF_BUF_SIZE (1024 * 1024)
+
+#define OPERF_MAX_FLOWS 256
+
+struct c {
+        char * s_apn;
+        int    size;
+        long   rate;
+        bool   flood;
+        int    duration;
+
+        size_t sent;
+        size_t rcvd;
+
+        flow_set_t * flows;
+        fqueue_t *   fq;
+
+        pthread_t reader_pt;
+        pthread_t writer_pt;
+} client;
+
+struct s {
+        struct timespec  times[OPERF_MAX_FLOWS];
+        flow_set_t *     flows;
+        fqueue_t *       fq;
+        pthread_mutex_t  lock;
+
+        uint8_t          buffer[OPERF_BUF_SIZE];
+        ssize_t          timeout;
+
+        pthread_t cleaner_pt;
+        pthread_t accept_pt;
+        pthread_t server_pt;
+} server;
+
+#include "operf_client.c"
+#include "operf_server.c"
+
+static void usage(void)
+{
+        printf("Usage: operf [OPTION]...\n"
+               "Measures bandwidth between a client and a server\n"
+               "  -l, --listen              Run in server mode\n"
+               "\n"
+               "  -n, --server-apn          Name of the operf server\n"
+               "  -d, --duration            Test duration (s, default 60)\n"
+               "  -r, --rate                Rate (b/s)\n"
+               "  -s, --size                Payload size (B, default 1500)\n"
+               "  -f, --flood               Send SDUs as fast as possible\n"
+               "      --help                Display this help text and exit\n");
+}
+
+int main(int argc, char ** argv)
+{
+        int ret = -1;
+        char * rem = NULL;
+        bool serv = false;
+        char ** argv_dup = argv;
+
+        argc--;
+        argv++;
+
+        client.s_apn = NULL;
+        client.size = 1500;
+        client.duration = 60000;
+        server.timeout = 1000; /* ms */
+        client.rate = 1000000;
+        client.flood = false;
+
+        while (argc > 0) {
+                if (strcmp(*argv, "-n") == 0 ||
+                           strcmp(*argv, "--server_apn") == 0) {
+                        client.s_apn = *(++argv);
+                        --argc;
+                } else if (strcmp(*argv, "-s") == 0 ||
+                           strcmp(*argv, "--size") == 0) {
+                        client.size = strtol(*(++argv), &rem, 10);
+                        --argc;
+                } else if (strcmp(*argv, "-d") == 0 ||
+                           strcmp(*argv, "--duration") == 0) {
+                        client.duration = strtol(*(++argv), &rem, 10) * 1000;
+                        --argc;
+                } else if (strcmp(*argv, "-r") == 0 ||
+                           strcmp(*argv, "--rate") == 0) {
+                        client.rate = strtol(*(++argv), &rem, 10);
+                        if (*rem == 'k')
+                                client.rate *= 1000;
+                        if (*rem == 'M')
+                                client.rate *= MILLION;
+                        if (*rem == 'G')
+                                client.rate *= BILLION;
+                        --argc;
+                } else if (strcmp(*argv, "-f") == 0 ||
+                           strcmp(*argv, "--flood") == 0) {
+                        client.flood = true;
+                } else if (strcmp(*argv, "-l") == 0 ||
+                           strcmp(*argv, "--listen") == 0) {
+                        serv = true;
+                } else {
+                        usage();
+                        exit(EXIT_SUCCESS);
+                }
+                argc--;
+                argv++;
+        }
+
+        if (serv) {
+                if (ap_init(argv_dup[0])) {
+                        printf("Failed to init AP.\n");
+                        exit(EXIT_FAILURE);
+                }
+
+                ret = server_main();
+        } else {
+                if (ap_init(NULL)) {
+                        printf("Failed to init AP.\n");
+                        exit(EXIT_FAILURE);
+                }
+
+                if (client.s_apn == NULL) {
+                        printf("No server specified.\n");
+                        usage();
+                        exit(EXIT_SUCCESS);
+                }
+                if (client.size > OPERF_BUF_SIZE) {
+                        printf("Packet size truncated to %d bytes.\n",
+                               OPERF_BUF_SIZE);
+                        client.size = OPERF_BUF_SIZE;
+                }
+
+                if (client.size < 64) {
+                        printf("Packet size set to 64 bytes.\n");
+                        client.size = 64;
+                }
+
+                ret = client_main();
+        }
+
+        ap_fini();
+
+        if (ret < 0)
+                exit(EXIT_FAILURE);
+
+        exit(EXIT_SUCCESS);
+}