* Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2012, 2014, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
static struct mutex lnet_config_mutex;
-int
-lnet_configure (void *arg)
+static int
+lnet_configure(void *arg)
{
- /* 'arg' only there so I can be passed to cfs_create_thread() */
- int rc = 0;
+ /* 'arg' only there so I can be passed to cfs_create_thread() */
+ int rc = 0;
- LNET_MUTEX_LOCK(&lnet_config_mutex);
+ LNET_MUTEX_LOCK(&lnet_config_mutex);
- if (!the_lnet.ln_niinit_self) {
- rc = LNetNIInit(LUSTRE_SRV_LNET_PID);
- if (rc >= 0) {
- the_lnet.ln_niinit_self = 1;
- rc = 0;
- }
- }
+ if (!the_lnet.ln_niinit_self) {
+ rc = try_module_get(THIS_MODULE);
- LNET_MUTEX_UNLOCK(&lnet_config_mutex);
- return rc;
+ if (rc != 1)
+ goto out;
+
+ rc = LNetNIInit(LNET_PID_LUSTRE);
+ if (rc >= 0) {
+ the_lnet.ln_niinit_self = 1;
+ rc = 0;
+ } else {
+ module_put(THIS_MODULE);
+ }
+ }
+
+out:
+ LNET_MUTEX_UNLOCK(&lnet_config_mutex);
+ return rc;
}
-int
+static int
lnet_unconfigure (void)
{
- int refcount;
-
- LNET_MUTEX_LOCK(&lnet_config_mutex);
+ int refcount;
- if (the_lnet.ln_niinit_self) {
- the_lnet.ln_niinit_self = 0;
- LNetNIFini();
- }
+ LNET_MUTEX_LOCK(&lnet_config_mutex);
- LNET_MUTEX_LOCK(&the_lnet.ln_api_mutex);
- refcount = the_lnet.ln_refcount;
- LNET_MUTEX_UNLOCK(&the_lnet.ln_api_mutex);
+ if (the_lnet.ln_niinit_self) {
+ the_lnet.ln_niinit_self = 0;
+ LNetNIFini();
+ module_put(THIS_MODULE);
+ }
+
+ LNET_MUTEX_LOCK(&the_lnet.ln_api_mutex);
+ refcount = the_lnet.ln_refcount;
+ LNET_MUTEX_UNLOCK(&the_lnet.ln_api_mutex);
- LNET_MUTEX_UNLOCK(&lnet_config_mutex);
- return (refcount == 0) ? 0 : -EBUSY;
+ LNET_MUTEX_UNLOCK(&lnet_config_mutex);
+
+ return (refcount == 0) ? 0 : -EBUSY;
}
-int
+static int
+lnet_dyn_configure(struct libcfs_ioctl_hdr *hdr)
+{
+ struct lnet_ioctl_config_data *conf =
+ (struct lnet_ioctl_config_data *)hdr;
+ int rc;
+
+ LNET_MUTEX_LOCK(&lnet_config_mutex);
+ if (the_lnet.ln_niinit_self)
+ rc = lnet_dyn_add_ni(LNET_PID_LUSTRE,
+ conf->cfg_config_u.cfg_net.net_intf,
+ conf->cfg_config_u.cfg_net.
+ net_peer_timeout,
+ conf->cfg_config_u.cfg_net.
+ net_peer_tx_credits,
+ conf->cfg_config_u.cfg_net.
+ net_peer_rtr_credits,
+ conf->cfg_config_u.cfg_net.
+ net_max_tx_credits);
+ else
+ rc = -EINVAL;
+ LNET_MUTEX_UNLOCK(&lnet_config_mutex);
+ return rc;
+}
+
+static int
+lnet_dyn_unconfigure(struct libcfs_ioctl_hdr *hdr)
+{
+ struct lnet_ioctl_config_data *conf =
+ (struct lnet_ioctl_config_data *) hdr;
+ int rc;
+
+ LNET_MUTEX_LOCK(&lnet_config_mutex);
+ if (the_lnet.ln_niinit_self)
+ rc = lnet_dyn_del_ni(conf->cfg_net);
+ else
+ rc = -EINVAL;
+ LNET_MUTEX_UNLOCK(&lnet_config_mutex);
+
+ return rc;
+}
+
+static int
lnet_ioctl(unsigned int cmd, struct libcfs_ioctl_hdr *hdr)
{
int rc;
switch (cmd) {
- case IOC_LIBCFS_CONFIGURE:
+ case IOC_LIBCFS_CONFIGURE: {
+ struct libcfs_ioctl_data *data =
+ (struct libcfs_ioctl_data *)hdr;
+ the_lnet.ln_nis_from_mod_params = data->ioc_flags;
return lnet_configure(NULL);
+ }
case IOC_LIBCFS_UNCONFIGURE:
return lnet_unconfigure();
case IOC_LIBCFS_ADD_NET:
- return LNetCtl(cmd, hdr);
+ return lnet_dyn_configure(hdr);
+
+ case IOC_LIBCFS_DEL_NET:
+ return lnet_dyn_unconfigure(hdr);
default:
/* Passing LNET_PID_ANY only gives me a ref if the net is up
DECLARE_IOCTL_HANDLER(lnet_ioctl_handler, lnet_ioctl);
-int
-init_lnet(void)
+static int
+lnet_module_init(void)
{
- int rc;
- ENTRY;
+ int rc;
+ ENTRY;
mutex_init(&lnet_config_mutex);
- rc = LNetInit();
- if (rc != 0) {
- CERROR("LNetInit: error %d\n", rc);
- RETURN(rc);
- }
+ rc = lnet_init();
+ if (rc != 0) {
+ CERROR("lnet_init: error %d\n", rc);
+ RETURN(rc);
+ }
- rc = libcfs_register_ioctl(&lnet_ioctl_handler);
- LASSERT (rc == 0);
+ rc = libcfs_register_ioctl(&lnet_ioctl_handler);
+ LASSERT(rc == 0);
if (config_on_load) {
/* Have to schedule a separate thread to avoid deadlocking
(void) kthread_run(lnet_configure, NULL, "lnet_initd");
}
- RETURN(0);
+ RETURN(0);
}
-void
-fini_lnet(void)
+static void
+lnet_module_exit(void)
{
- int rc;
+ int rc;
- rc = libcfs_deregister_ioctl(&lnet_ioctl_handler);
- LASSERT (rc == 0);
+ rc = libcfs_deregister_ioctl(&lnet_ioctl_handler);
+ LASSERT(rc == 0);
- LNetFini();
+ lnet_fini();
}
MODULE_AUTHOR("Peter J. Braam <braam@clusterfs.com>");
MODULE_DESCRIPTION("Portals v3.1");
MODULE_LICENSE("GPL");
-cfs_module(lnet, "1.0.0", init_lnet, fini_lnet);
+cfs_module(lnet, "1.0.0", lnet_module_init, lnet_module_exit);