datapath: Check for backported rcu_read_lock_held.

[sliver-openvswitch.git] / utilities / ovs-openflowd.c

diff --git a/utilities/ovs-openflowd.c b/utilities/ovs-openflowd.c
index 20b08c1..486eae2 100644 (file)
--- a/utilities/ovs-openflowd.c
+++ b/utilities/ovs-openflowd.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,6 +29,7 @@
 #include "daemon.h"
 #include "dirs.h"
 #include "dpif.h"
+#include "dummy.h"
 #include "leak-checker.h"
 #include "list.h"
 #include "netdev.h"
@@ -56,6 +57,7 @@ struct ofsettings {
     struct ofproto_controller *controllers;
     size_t n_controllers;
     enum ofproto_fail_mode fail_mode;
+    bool run_forever;           /* Continue running even with no controller? */
 
     /* Datapath. */
     uint64_t datapath_id;       /* Datapath ID. */
@@ -80,6 +82,8 @@ struct ofsettings {
     struct svec netflow;        /* NetFlow targets. */
 };
 
+static unixctl_cb_func ovs_openflowd_exit;
+
 static void parse_options(int argc, char *argv[], struct ofsettings *);
 static void usage(void) NO_RETURN;
 
@@ -92,6 +96,7 @@ main(int argc, char *argv[])
     int error;
     struct dpif *dpif;
     struct netflow_options nf_options;
+    bool exiting;
 
     proctitle_init(argc, argv);
     set_program_name(argv[0]);
@@ -107,6 +112,8 @@ main(int argc, char *argv[])
         exit(EXIT_FAILURE);
     }
 
+    unixctl_command_register("exit", ovs_openflowd_exit, &exiting);
+
     VLOG_INFO("Open vSwitch version %s", VERSION BUILDNR);
     VLOG_INFO("OpenFlow protocol version 0x%02x", OFP_VERSION);
 
@@ -121,10 +128,19 @@ main(int argc, char *argv[])
         size_t i;
 
         SVEC_FOR_EACH (i, port, &s.ports) {
-            error = dpif_port_add(dpif, port, 0, NULL);
+            struct netdev *netdev;
+
+            error = netdev_open_default(port, &netdev);
+            if (error) {
+                ovs_fatal(error, "%s: failed to open network device", port);
+            }
+
+            error = dpif_port_add(dpif, netdev, NULL);
             if (error) {
                 ovs_fatal(error, "failed to add %s as a port", port);
             }
+
+            netdev_close(netdev);
         }
     }
 
@@ -154,7 +170,8 @@ main(int argc, char *argv[])
 
     daemonize_complete();
 
-    while (ofproto_is_alive(ofproto)) {
+    exiting = false;
+    while (!exiting && (s.run_forever || ofproto_is_alive(ofproto))) {
         error = ofproto_run(ofproto);
         if (error) {
             ovs_fatal(error, "unrecoverable datapath error");
@@ -167,6 +184,9 @@ main(int argc, char *argv[])
         unixctl_server_wait(unixctl);
         dp_wait();
         netdev_wait();
+        if (exiting) {
+            poll_immediate_wake();
+        }
         poll_block();
     }
 
@@ -174,6 +194,15 @@ main(int argc, char *argv[])
 
     return 0;
 }
+
+static void
+ovs_openflowd_exit(struct unixctl_conn *conn, const char *args OVS_UNUSED,
+                   void *exiting_)
+{
+    bool *exiting = exiting_;
+    *exiting = true;
+    unixctl_command_reply(conn, 200, NULL);
+}
 \f
 /* User interface. */
 
@@ -203,8 +232,10 @@ parse_options(int argc, char *argv[], struct ofsettings *s)
         OPT_NETFLOW,
         OPT_PORTS,
         OPT_UNIXCTL,
+        OPT_ENABLE_DUMMY,
         VLOG_OPTION_ENUMS,
-        LEAK_CHECKER_OPTION_ENUMS
+        LEAK_CHECKER_OPTION_ENUMS,
+        DAEMON_OPTION_ENUMS
     };
     static struct option long_options[] = {
         {"datapath-id", required_argument, 0, OPT_DATAPATH_ID},
@@ -230,6 +261,7 @@ parse_options(int argc, char *argv[], struct ofsettings *s)
         {"netflow",     required_argument, 0, OPT_NETFLOW},
         {"ports",       required_argument, 0, OPT_PORTS},
         {"unixctl",     required_argument, 0, OPT_UNIXCTL},
+        {"enable-dummy", no_argument, 0, OPT_ENABLE_DUMMY},
         {"verbose",     optional_argument, 0, 'v'},
         {"help",        no_argument, 0, 'h'},
         {"version",     no_argument, 0, 'V'},
@@ -399,6 +431,10 @@ parse_options(int argc, char *argv[], struct ofsettings *s)
             s->unixctl_path = optarg;
             break;
 
+        case OPT_ENABLE_DUMMY:
+            dummy_enable();
+            break;
+
         case 'h':
             usage();
 
@@ -452,12 +488,17 @@ parse_options(int argc, char *argv[], struct ofsettings *s)
     dp_parse_name(argv[0], &s->dp_name, &s->dp_type);
 
     /* Figure out controller names. */
+    s->run_forever = false;
     if (!controllers.n) {
         svec_add_nocopy(&controllers, xasprintf("punix:%s/%s.mgmt",
                                                 ovs_rundir(), s->dp_name));
     }
     for (i = 1; i < argc; i++) {
-        svec_add(&controllers, argv[i]);
+        if (!strcmp(argv[i], "none")) {
+            s->run_forever = true;
+        } else {
+            svec_add(&controllers, argv[i]);
+        }
     }
     if (argc < 2) {
         svec_add(&controllers, "discover");
@@ -486,8 +527,9 @@ static void
 usage(void)
 {
     printf("%s: an OpenFlow switch implementation.\n"
-           "usage: %s [OPTIONS] DATAPATH [CONTROLLER...]\n"
-           "DATAPATH is a local datapath (e.g. \"dp0\").\n"
+           "usage: %s [OPTIONS] [TYPE@]DATAPATH [CONTROLLER...]\n"
+           "where DATAPATH is a local datapath (e.g. \"dp0\")\n"
+           "optionally with an explicit TYPE (default: \"system\").\n"
            "Each CONTROLLER is an active OpenFlow connection method.  If\n"
            "none is given, ovs-openflowd performs controller discovery.\n",
            program_name, program_name);