-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * 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 version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
+// SPDX-License-Identifier: GPL-2.0
+
+/* Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
+/* This file is part of Lustre, http://www.lustre.org/ */
+
#define DEBUG_SUBSYSTEM S_LNET
+
+#include <linux/miscdevice.h>
#include <lnet/lib-lnet.h>
-#include <lnet/lib-dlc.h>
+#include <uapi/linux/lnet/lnet-dlc.h>
+#include <uapi/linux/lustre/lustre_ver.h>
static int config_on_load = 0;
-CFS_MODULE_PARM(config_on_load, "i", int, 0444,
- "configure network at module load");
+module_param(config_on_load, int, 0444);
+MODULE_PARM_DESC(config_on_load, "configure network at module load");
-static struct mutex lnet_config_mutex;
+static DEFINE_MUTEX(lnet_config_mutex);
-int
-lnet_configure(void *arg)
+int lnet_configure(void *arg)
{
/* 'arg' only there so I can be passed to cfs_create_thread() */
int rc = 0;
- LNET_MUTEX_LOCK(&lnet_config_mutex);
+ mutex_lock(&lnet_config_mutex);
if (!the_lnet.ln_niinit_self) {
- rc = LNetNIInit(LUSTRE_SRV_LNET_PID);
+ rc = try_module_get(THIS_MODULE);
+
+ 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);
}
}
- LNET_MUTEX_UNLOCK(&lnet_config_mutex);
+out:
+ mutex_unlock(&lnet_config_mutex);
return rc;
}
-int
-lnet_unconfigure (void)
+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();
- }
+ 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_UNLOCK(&lnet_config_mutex);
- return (refcount == 0) ? 0 : -EBUSY;
+ mutex_lock(&the_lnet.ln_api_mutex);
+ refcount = the_lnet.ln_refcount;
+ mutex_unlock(&the_lnet.ln_api_mutex);
+
+ mutex_unlock(&lnet_config_mutex);
+
+ return (refcount == 0) ? 0 : -EBUSY;
}
-int
-lnet_dyn_configure(struct libcfs_ioctl_hdr *hdr)
+static int
+lnet_dyn_configure_net(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 (conf->cfg_hdr.ioc_len < sizeof(*conf))
+ return -EINVAL;
+
+ mutex_lock(&lnet_config_mutex);
if (the_lnet.ln_niinit_self)
- rc = lnet_dyn_add_ni(LUSTRE_SRV_LNET_PID,
- 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);
+ rc = lnet_dyn_add_net(conf);
else
rc = -EINVAL;
- LNET_MUTEX_UNLOCK(&lnet_config_mutex);
+ mutex_unlock(&lnet_config_mutex);
+
return rc;
}
-int
-lnet_dyn_unconfigure(struct libcfs_ioctl_hdr *hdr)
+static int
+lnet_dyn_unconfigure_net(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 (conf->cfg_hdr.ioc_len < sizeof(*conf))
+ return -EINVAL;
+
+ mutex_lock(&lnet_config_mutex);
if (the_lnet.ln_niinit_self)
- rc = lnet_dyn_del_ni(conf->cfg_net);
+ rc = lnet_dyn_del_net(conf->cfg_net);
else
rc = -EINVAL;
- LNET_MUTEX_UNLOCK(&lnet_config_mutex);
+ mutex_unlock(&lnet_config_mutex);
return rc;
}
-int
+static int
+lnet_dyn_configure_ni(struct libcfs_ioctl_hdr *hdr)
+{
+ struct lnet_ioctl_config_ni *conf =
+ (struct lnet_ioctl_config_ni *)hdr;
+ int rc = -EINVAL;
+
+ if (conf->lic_cfg_hdr.ioc_len < sizeof(*conf))
+ return rc;
+
+ mutex_lock(&lnet_config_mutex);
+ if (the_lnet.ln_niinit_self) {
+ struct lnet_ioctl_config_lnd_tunables *tun = NULL;
+ struct lnet_nid nid;
+ u32 net_id;
+
+ /* get the tunables if they are available */
+ if (conf->lic_cfg_hdr.ioc_len >=
+ sizeof(*conf) + sizeof(*tun))
+ tun = (struct lnet_ioctl_config_lnd_tunables *) conf->lic_bulk;
+
+ lnet_nid4_to_nid(conf->lic_nid, &nid);
+ net_id = LNET_NID_NET(&nid);
+ rc = lnet_dyn_add_ni(conf, net_id, &LNET_ANY_NID, tun);
+ }
+ mutex_unlock(&lnet_config_mutex);
+
+ return rc;
+}
+
+static int
+lnet_dyn_unconfigure_ni(struct libcfs_ioctl_hdr *hdr)
+{
+ struct lnet_ioctl_config_ni *conf =
+ (struct lnet_ioctl_config_ni *) hdr;
+ struct lnet_nid nid;
+ int rc = -EINVAL;
+
+ if (conf->lic_cfg_hdr.ioc_len < sizeof(*conf) ||
+ !the_lnet.ln_niinit_self)
+ return rc;
+
+ lnet_nid4_to_nid(conf->lic_nid, &nid);
+ mutex_lock(&lnet_config_mutex);
+ if (the_lnet.ln_niinit_self)
+ rc = lnet_dyn_del_ni(&nid);
+ else
+ rc = -EINVAL;
+ mutex_unlock(&lnet_config_mutex);
+
+ return rc;
+}
+
+static int
lnet_ioctl(unsigned int cmd, struct libcfs_ioctl_hdr *hdr)
{
- int rc;
+ int rc;
switch (cmd) {
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);
+
+ if (data->ioc_hdr.ioc_len < sizeof(*data)) {
+ rc = -EINVAL;
+ } else {
+ the_lnet.ln_nis_from_mod_params = data->ioc_flags;
+ rc = lnet_configure(NULL);
+ }
+ break;
}
case IOC_LIBCFS_UNCONFIGURE:
- return lnet_unconfigure();
+ rc = lnet_unconfigure();
+ break;
case IOC_LIBCFS_ADD_NET:
- return lnet_dyn_configure(hdr);
+ rc = lnet_dyn_configure_net(hdr);
+ break;
case IOC_LIBCFS_DEL_NET:
- return lnet_dyn_unconfigure(hdr);
+ rc = lnet_dyn_unconfigure_net(hdr);
+ break;
+
+ case IOC_LIBCFS_ADD_LOCAL_NI:
+ rc = lnet_dyn_configure_ni(hdr);
+ break;
+
+ case IOC_LIBCFS_DEL_LOCAL_NI:
+ rc = lnet_dyn_unconfigure_ni(hdr);
+ break;
default:
/* Passing LNET_PID_ANY only gives me a ref if the net is up
rc = LNetCtl(cmd, hdr);
LNetNIFini();
}
- return rc;
+ break;
+ }
+ return rc;
+}
+BLOCKING_NOTIFIER_HEAD(lnet_ioctl_list);
+EXPORT_SYMBOL(lnet_ioctl_list);
+
+static inline size_t lnet_ioctl_packlen(struct libcfs_ioctl_data *data)
+{
+ size_t len = sizeof(*data);
+
+ len += (data->ioc_inllen1 + 7) & ~7;
+ len += (data->ioc_inllen2 + 7) & ~7;
+ return len;
+}
+
+static bool lnet_ioctl_is_invalid(struct libcfs_ioctl_data *data)
+{
+ const int maxlen = 1 << 30;
+
+ if (data->ioc_hdr.ioc_len > maxlen)
+ return true;
+
+ if (data->ioc_inllen1 > maxlen)
+ return true;
+
+ if (data->ioc_inllen2 > maxlen)
+ return true;
+
+ if (data->ioc_inlbuf1 && !data->ioc_inllen1)
+ return true;
+
+ if (data->ioc_inlbuf2 && !data->ioc_inllen2)
+ return true;
+
+ if (data->ioc_pbuf1 && !data->ioc_plen1)
+ return true;
+
+ if (data->ioc_pbuf2 && !data->ioc_plen2)
+ return true;
+
+ if (data->ioc_plen1 && !data->ioc_pbuf1)
+ return true;
+
+ if (data->ioc_plen2 && !data->ioc_pbuf2)
+ return true;
+
+ if (lnet_ioctl_packlen(data) != data->ioc_hdr.ioc_len)
+ return true;
+
+ if (data->ioc_inllen1 &&
+ data->ioc_bulk[((data->ioc_inllen1 + 7) & ~7) +
+ data->ioc_inllen2 - 1] != '\0')
+ return true;
+
+ return false;
+}
+
+static int lnet_ioctl_data_adjust(struct libcfs_ioctl_data *data)
+{
+ ENTRY;
+
+ if (lnet_ioctl_is_invalid(data)) {
+ CERROR("lnet ioctl: parameter not correctly formatted\n");
+ RETURN(-EINVAL);
}
+
+ if (data->ioc_inllen1 != 0)
+ data->ioc_inlbuf1 = &data->ioc_bulk[0];
+
+ if (data->ioc_inllen2 != 0)
+ data->ioc_inlbuf2 = (&data->ioc_bulk[0] +
+ round_up(data->ioc_inllen1, 8));
+
+ RETURN(0);
}
-DECLARE_IOCTL_HANDLER(lnet_ioctl_handler, lnet_ioctl);
+static int lnet_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp,
+ struct libcfs_ioctl_hdr __user *uhdr)
+{
+ struct libcfs_ioctl_hdr hdr;
+ int err;
+
+ ENTRY;
+ if (copy_from_user(&hdr, uhdr, sizeof(hdr)))
+ RETURN(-EFAULT);
+
+ if (hdr.ioc_version != LNET_IOCTL_VERSION &&
+ hdr.ioc_version != LNET_IOCTL_VERSION2) {
+ CERROR("lnet ioctl: version mismatch expected %#x, got %#x\n",
+ LNET_IOCTL_VERSION, hdr.ioc_version);
+ RETURN(-EINVAL);
+ }
+
+ if (hdr.ioc_len < sizeof(struct libcfs_ioctl_hdr)) {
+ CERROR("lnet ioctl: user buffer too small for ioctl\n");
+ RETURN(-EINVAL);
+ }
+
+ if (hdr.ioc_len > LIBCFS_IOC_DATA_MAX) {
+ CERROR("lnet ioctl: user buffer is too large %d/%d\n",
+ hdr.ioc_len, LIBCFS_IOC_DATA_MAX);
+ RETURN(-EINVAL);
+ }
-int
-init_lnet(void)
+ LIBCFS_ALLOC(*hdr_pp, hdr.ioc_len);
+ if (*hdr_pp == NULL)
+ RETURN(-ENOMEM);
+
+ if (copy_from_user(*hdr_pp, uhdr, hdr.ioc_len))
+ GOTO(free, err = -EFAULT);
+
+ if ((*hdr_pp)->ioc_version != hdr.ioc_version ||
+ (*hdr_pp)->ioc_len != hdr.ioc_len) {
+ GOTO(free, err = -EINVAL);
+ }
+
+ RETURN(0);
+
+free:
+ LIBCFS_FREE(*hdr_pp, hdr.ioc_len);
+ RETURN(err);
+}
+
+static long
+lnet_psdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct libcfs_ioctl_data *data = NULL;
+ struct libcfs_ioctl_hdr *hdr;
+ int err;
+ void __user *uparam = (void __user *)arg;
+
+ ENTRY;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+
+ if (_IOC_TYPE(cmd) != IOC_LIBCFS_TYPE ||
+ _IOC_NR(cmd) < IOC_LIBCFS_MIN_NR ||
+ _IOC_NR(cmd) > IOC_LIBCFS_MAX_NR) {
+ CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
+ _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
+ return -EINVAL;
+ }
+
+ /* 'cmd' and permissions get checked in our arch-specific caller */
+ err = lnet_ioctl_getdata(&hdr, uparam);
+ if (err != 0) {
+ CDEBUG_LIMIT(D_ERROR,
+ "lnet ioctl: data header error %d\n", err);
+ RETURN(err);
+ }
+
+ if (hdr->ioc_version == LNET_IOCTL_VERSION) {
+ /* The lnet_ioctl_data_adjust() function performs adjustment
+ * operations on the libcfs_ioctl_data structure to make
+ * it usable by the code. This doesn't need to be called
+ * for new data structures added.
+ */
+ data = container_of(hdr, struct libcfs_ioctl_data, ioc_hdr);
+ err = lnet_ioctl_data_adjust(data);
+ if (err != 0)
+ GOTO(out, err);
+ }
+
+ CDEBUG(D_IOCTL, "lnet ioctl cmd %u\n", cmd);
+
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 18, 53, 0)
+ err = libcfs_ioctl(cmd, data);
+ if (err == -EINVAL)
+#endif
+ err = lnet_ioctl(cmd, hdr);
+ if (err == -EINVAL) {
+ err = blocking_notifier_call_chain(&lnet_ioctl_list,
+ cmd, hdr);
+ if (!(err & NOTIFY_STOP_MASK))
+ /* No-one claimed the ioctl */
+ err = -EINVAL;
+ else
+ err = notifier_to_errno(err);
+ }
+ if (copy_to_user(uparam, hdr, hdr->ioc_len) && !err)
+ err = -EFAULT;
+out:
+ LIBCFS_FREE(hdr, hdr->ioc_len);
+ RETURN(err);
+}
+
+static const struct file_operations lnet_fops = {
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = lnet_psdev_ioctl,
+};
+
+static struct miscdevice lnet_dev = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "lnet",
+ .fops = &lnet_fops,
+};
+
+static int __init lnet_init(void)
{
- int rc;
- ENTRY;
+ int rc;
- mutex_init(&lnet_config_mutex);
+ ENTRY;
+ rc = libcfs_setup();
+ if (rc)
+ return rc;
- rc = LNetInit();
- if (rc != 0) {
- CERROR("LNetInit: error %d\n", rc);
- RETURN(rc);
- }
+ rc = cfs_cpu_init();
+ if (rc < 0) {
+ CERROR("cfs_cpu_init: rc = %d\n", rc);
+ RETURN(rc);
+ }
+
+ rc = lnet_lib_init();
+ if (rc != 0) {
+ CERROR("lnet_lib_init: rc = %d\n", rc);
+ cfs_cpu_fini();
+ RETURN(rc);
+ }
- rc = libcfs_register_ioctl(&lnet_ioctl_handler);
- LASSERT (rc == 0);
+ rc = misc_register(&lnet_dev);
+ if (rc) {
+ CERROR("misc_register: rc = %d\n", rc);
+ cfs_cpu_fini();
+ RETURN(rc);
+ }
+
+ if (live_router_check_interval != INT_MIN ||
+ dead_router_check_interval != INT_MIN)
+ LCONSOLE_WARN("live_router_check_interval and dead_router_check_interval have been deprecated. Use alive_router_check_interval instead. Ignoring these deprecated parameters.\n");
if (config_on_load) {
/* Have to schedule a separate thread to avoid deadlocking
* in modload */
- (void) kthread_run(lnet_configure, NULL, "lnet_initd");
+ (void)kthread_run(lnet_configure, NULL, "lnet_initd");
}
- RETURN(0);
+ RETURN(0);
}
-void
-fini_lnet(void)
+static void __exit lnet_exit(void)
{
- int rc;
-
- rc = libcfs_deregister_ioctl(&lnet_ioctl_handler);
- LASSERT (rc == 0);
+ misc_deregister(&lnet_dev);
- LNetFini();
+ lnet_router_exit();
+ lnet_lib_exit();
+ cfs_cpu_fini();
}
-MODULE_AUTHOR("Peter J. Braam <braam@clusterfs.com>");
-MODULE_DESCRIPTION("Portals v3.1");
+MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
+MODULE_DESCRIPTION("Lustre Networking layer");
+MODULE_VERSION(LNET_VERSION);
MODULE_LICENSE("GPL");
-cfs_module(lnet, "1.0.0", init_lnet, fini_lnet);
+module_init(lnet_init);
+module_exit(lnet_exit);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff