Make use of zlib optional
[fio.git] / server.c
index 8a6275d..020d1d7 100644 (file)
--- a/server.c
+++ b/server.c
@@ -16,7 +16,9 @@
 #include <netdb.h>
 #include <syslog.h>
 #include <signal.h>
+#ifdef CONFIG_ZLIB
 #include <zlib.h>
+#endif
 
 #include "fio.h"
 #include "server.h"
@@ -33,6 +35,12 @@ static char *bind_sock;
 static struct sockaddr_in saddr_in;
 static struct sockaddr_in6 saddr_in6;
 static int use_ipv6;
+#ifdef CONFIG_ZLIB
+static unsigned int has_zlib = 1;
+#else
+static unsigned int has_zlib = 0;
+#endif
+static unsigned int use_zlib;
 
 struct fio_fork_item {
        struct flist_head list;
@@ -616,7 +624,8 @@ static int handle_jobline_cmd(struct fio_net_cmd *cmd)
 
 static int handle_probe_cmd(struct fio_net_cmd *cmd)
 {
-       struct cmd_probe_pdu probe;
+       struct cmd_client_probe_pdu *pdu = (struct cmd_client_probe_pdu *) cmd->payload;
+       struct cmd_probe_reply_pdu probe;
        uint64_t tag = cmd->tag;
 
        dprint(FD_NET, "server: sending probe reply\n");
@@ -632,7 +641,17 @@ static int handle_probe_cmd(struct fio_net_cmd *cmd)
        probe.arch      = FIO_ARCH;
        probe.bpp       = sizeof(void *);
        probe.cpus      = __cpu_to_le32(cpus_online());
-       probe.flags     = 0;
+
+       /*
+        * If the client supports compression and we do too, then enable it
+        */
+       if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) {
+               probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB);
+               use_zlib = 1;
+       } else {
+               probe.flags = 0;
+               use_zlib = 0;
+       }
 
        return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, NULL);
 }
@@ -1117,26 +1136,12 @@ static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
        return fio_sendv_data(sk, iov, 2);
 }
 
-int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
+static int fio_send_iolog_gz(struct cmd_iolog_pdu *pdu, struct io_log *log)
 {
-       struct cmd_iolog_pdu pdu;
+       int ret = 0;
+#ifdef CONFIG_ZLIB
        z_stream stream;
        void *out_pdu;
-       int i, ret = 0;
-
-       pdu.thread_number = cpu_to_le32(td->thread_number);
-       pdu.nr_samples = __cpu_to_le32(log->nr_samples);
-       pdu.log_type = cpu_to_le32(log->log_type);
-       strcpy((char *) pdu.name, name);
-
-       for (i = 0; i < log->nr_samples; i++) {
-               struct io_sample *s = &log->log[i];
-
-               s->time = cpu_to_le64(s->time);
-               s->val  = cpu_to_le64(s->val);
-               s->ddir = cpu_to_le32(s->ddir);
-               s->bs   = cpu_to_le32(s->bs);
-       }
 
        /*
         * Dirty - since the log is potentially huge, compress it into
@@ -1154,14 +1159,6 @@ int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
                goto err;
        }
 
-       /*
-        * Send header first, it's not compressed.
-        */
-       ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, &pdu,
-                                       sizeof(pdu), 0, FIO_NET_CMD_F_MORE);
-       if (ret)
-               goto err_zlib;
-
        stream.next_in = (void *) log->log;
        stream.avail_in = log->nr_samples * sizeof(struct io_sample);
 
@@ -1191,9 +1188,48 @@ err_zlib:
        deflateEnd(&stream);
 err:
        free(out_pdu);
+#endif
        return ret;
 }
 
+int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
+{
+       struct cmd_iolog_pdu pdu;
+       int i, ret = 0;
+
+       pdu.thread_number = cpu_to_le32(td->thread_number);
+       pdu.nr_samples = __cpu_to_le32(log->nr_samples);
+       pdu.log_type = cpu_to_le32(log->log_type);
+       pdu.compressed = cpu_to_le32(use_zlib);
+       strcpy((char *) pdu.name, name);
+
+       for (i = 0; i < log->nr_samples; i++) {
+               struct io_sample *s = &log->log[i];
+
+               s->time = cpu_to_le64(s->time);
+               s->val  = cpu_to_le64(s->val);
+               s->ddir = cpu_to_le32(s->ddir);
+               s->bs   = cpu_to_le32(s->bs);
+       }
+
+       /*
+        * Send header first, it's not compressed.
+        */
+       ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, &pdu,
+                                       sizeof(pdu), 0, FIO_NET_CMD_F_MORE);
+       if (ret)
+               return ret;
+
+       /*
+        * Now send actual log, compress if we can, otherwise just plain
+        */
+       if (use_zlib)
+               return fio_send_iolog_gz(&pdu, log);
+
+       return fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, log->log,
+                       log->nr_samples * sizeof(struct io_sample), 0, 0);
+}
+
 void fio_server_send_add_job(struct thread_data *td)
 {
        struct cmd_add_job_pdu pdu;