*
* 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2013, Intel Corporation.
+ * Copyright (c) 2011, 2016, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*/
#define DEBUG_SUBSYSTEM S_LNET
-#include <lnet/lib-lnet.h>
-#ifdef __KERNEL__
#include <linux/log2.h>
-#endif
+#include <linux/ktime.h>
+
+#include <lnet/lib-lnet.h>
-#ifdef __KERNEL__
#define D_LNI D_CONSOLE
-#else
-#define D_LNI D_CONFIG
-#endif
-lnet_t the_lnet; /* THE state of the network */
+lnet_t the_lnet; /* THE state of the network */
EXPORT_SYMBOL(the_lnet);
-#ifdef __KERNEL__
-
static char *ip2nets = "";
-CFS_MODULE_PARM(ip2nets, "s", charp, 0444,
- "LNET network <- IP table");
+module_param(ip2nets, charp, 0444);
+MODULE_PARM_DESC(ip2nets, "LNET network <- IP table");
static char *networks = "";
-CFS_MODULE_PARM(networks, "s", charp, 0444,
- "local networks");
+module_param(networks, charp, 0444);
+MODULE_PARM_DESC(networks, "local networks");
static char *routes = "";
-CFS_MODULE_PARM(routes, "s", charp, 0444,
- "routes to non-local networks");
+module_param(routes, charp, 0444);
+MODULE_PARM_DESC(routes, "routes to non-local networks");
static int rnet_htable_size = LNET_REMOTE_NETS_HASH_DEFAULT;
-CFS_MODULE_PARM(rnet_htable_size, "i", int, 0444,
- "size of remote network hash table");
+module_param(rnet_htable_size, int, 0444);
+MODULE_PARM_DESC(rnet_htable_size, "size of remote network hash table");
+
+static int use_tcp_bonding = false;
+module_param(use_tcp_bonding, int, 0444);
+MODULE_PARM_DESC(use_tcp_bonding,
+ "Set to 1 to use socklnd bonding. 0 to use Multi-Rail");
-char *
+static __u32 lnet_numa_range = 0;
+module_param(lnet_numa_range, int, 0444);
+MODULE_PARM_DESC(lnet_numa_range,
+ "NUMA range to consider during Multi-Rail selection");
+
+/*
+ * This sequence number keeps track of how many times DLC was used to
+ * update the local NIs. It is incremented when a NI is added or
+ * removed and checked when sending a message to determine if there is
+ * a need to re-run the selection algorithm. See lnet_select_pathway()
+ * for more details on its usage.
+ */
+static atomic_t lnet_dlc_seq_no = ATOMIC_INIT(0);
+
+static int lnet_ping(lnet_process_id_t id, signed long timeout,
+ lnet_process_id_t __user *ids, int n_ids);
+
+static char *
lnet_get_routes(void)
{
- return routes;
+ return routes;
}
-char *
+static char *
lnet_get_networks(void)
{
- char *nets;
- int rc;
+ char *nets;
+ int rc;
- if (*networks != 0 && *ip2nets != 0) {
- LCONSOLE_ERROR_MSG(0x101, "Please specify EITHER 'networks' or "
- "'ip2nets' but not both at once\n");
- return NULL;
- }
+ if (*networks != 0 && *ip2nets != 0) {
+ LCONSOLE_ERROR_MSG(0x101, "Please specify EITHER 'networks' or "
+ "'ip2nets' but not both at once\n");
+ return NULL;
+ }
- if (*ip2nets != 0) {
- rc = lnet_parse_ip2nets(&nets, ip2nets);
- return (rc == 0) ? nets : NULL;
- }
+ if (*ip2nets != 0) {
+ rc = lnet_parse_ip2nets(&nets, ip2nets);
+ return (rc == 0) ? nets : NULL;
+ }
- if (*networks != 0)
- return networks;
+ if (*networks != 0)
+ return networks;
- return "tcp";
+ return "tcp";
}
-void
+static void
lnet_init_locks(void)
{
spin_lock_init(&the_lnet.ln_eq_wait_lock);
- cfs_waitq_init(&the_lnet.ln_eq_waitq);
+ init_waitqueue_head(&the_lnet.ln_eq_waitq);
+ init_waitqueue_head(&the_lnet.ln_rc_waitq);
mutex_init(&the_lnet.ln_lnd_mutex);
mutex_init(&the_lnet.ln_api_mutex);
}
-void
+static void
lnet_fini_locks(void)
{
}
-#else
-
-char *
-lnet_get_routes(void)
-{
- char *str = getenv("LNET_ROUTES");
-
- return (str == NULL) ? "" : str;
-}
+struct kmem_cache *lnet_mes_cachep; /* MEs kmem_cache */
+struct kmem_cache *lnet_small_mds_cachep; /* <= LNET_SMALL_MD_SIZE bytes
+ * MDs kmem_cache */
-char *
-lnet_get_networks (void)
+static int
+lnet_descriptor_setup(void)
{
- static char default_networks[256];
- char *networks = getenv ("LNET_NETWORKS");
- char *str;
- char *sep;
- int len;
- int nob;
- cfs_list_t *tmp;
-
- if (networks != NULL)
- return networks;
-
- /* In userland, the default 'networks=' is the list of known net types */
- len = sizeof(default_networks);
- str = default_networks;
- *str = 0;
- sep = "";
-
- cfs_list_for_each (tmp, &the_lnet.ln_lnds) {
- lnd_t *lnd = cfs_list_entry(tmp, lnd_t, lnd_list);
-
- nob = snprintf(str, len, "%s%s", sep,
- libcfs_lnd2str(lnd->lnd_type));
- if (nob >= len) {
- /* overflowed the string; leave it where it was */
- *str = 0;
- break;
- }
- len -= nob;
- str += nob;
- sep = ",";
- }
-
- return default_networks;
-}
+ /* create specific kmem_cache for MEs and small MDs (i.e., originally
+ * allocated in <size-xxx> kmem_cache).
+ */
+ lnet_mes_cachep = kmem_cache_create("lnet_MEs", sizeof(lnet_me_t),
+ 0, 0, NULL);
+ if (!lnet_mes_cachep)
+ return -ENOMEM;
-# ifndef HAVE_LIBPTHREAD
+ lnet_small_mds_cachep = kmem_cache_create("lnet_small_MDs",
+ LNET_SMALL_MD_SIZE, 0, 0,
+ NULL);
+ if (!lnet_small_mds_cachep)
+ return -ENOMEM;
-void lnet_init_locks(void)
-{
- the_lnet.ln_eq_wait_lock = 0;
- the_lnet.ln_lnd_mutex = 0;
- the_lnet.ln_api_mutex = 0;
+ return 0;
}
-void lnet_fini_locks(void)
+static void
+lnet_descriptor_cleanup(void)
{
- LASSERT(the_lnet.ln_api_mutex == 0);
- LASSERT(the_lnet.ln_lnd_mutex == 0);
- LASSERT(the_lnet.ln_eq_wait_lock == 0);
-}
-
-# else
-void lnet_init_locks(void)
-{
- pthread_cond_init(&the_lnet.ln_eq_cond, NULL);
- pthread_mutex_init(&the_lnet.ln_eq_wait_lock, NULL);
- pthread_mutex_init(&the_lnet.ln_lnd_mutex, NULL);
- pthread_mutex_init(&the_lnet.ln_api_mutex, NULL);
-}
+ if (lnet_small_mds_cachep) {
+ kmem_cache_destroy(lnet_small_mds_cachep);
+ lnet_small_mds_cachep = NULL;
+ }
-void lnet_fini_locks(void)
-{
- pthread_mutex_destroy(&the_lnet.ln_api_mutex);
- pthread_mutex_destroy(&the_lnet.ln_lnd_mutex);
- pthread_mutex_destroy(&the_lnet.ln_eq_wait_lock);
- pthread_cond_destroy(&the_lnet.ln_eq_cond);
+ if (lnet_mes_cachep) {
+ kmem_cache_destroy(lnet_mes_cachep);
+ lnet_mes_cachep = NULL;
+ }
}
-# endif
-#endif
-
static int
lnet_create_remote_nets_table(void)
{
- int i;
- cfs_list_t *hash;
+ int i;
+ struct list_head *hash;
LASSERT(the_lnet.ln_remote_nets_hash == NULL);
LASSERT(the_lnet.ln_remote_nets_hbits > 0);
}
for (i = 0; i < LNET_REMOTE_NETS_HASH_SIZE; i++)
- CFS_INIT_LIST_HEAD(&hash[i]);
+ INIT_LIST_HEAD(&hash[i]);
the_lnet.ln_remote_nets_hash = hash;
return 0;
}
static void
lnet_destroy_remote_nets_table(void)
{
- int i;
- cfs_list_t *hash;
+ int i;
if (the_lnet.ln_remote_nets_hash == NULL)
return;
for (i = 0; i < LNET_REMOTE_NETS_HASH_SIZE; i++)
- LASSERT(cfs_list_empty(&the_lnet.ln_remote_nets_hash[i]));
+ LASSERT(list_empty(&the_lnet.ln_remote_nets_hash[i]));
LIBCFS_FREE(the_lnet.ln_remote_nets_hash,
- LNET_REMOTE_NETS_HASH_SIZE * sizeof(*hash));
+ LNET_REMOTE_NETS_HASH_SIZE *
+ sizeof(the_lnet.ln_remote_nets_hash[0]));
the_lnet.ln_remote_nets_hash = NULL;
}
return -ENOMEM;
}
-void lnet_assert_wire_constants (void)
-{
- /* Wire protocol assertions generated by 'wirecheck'
- * running on Linux robert.bartonsoftware.com 2.6.8-1.521
- * #1 Mon Aug 16 09:01:18 EDT 2004 i686 athlon i386 GNU/Linux
- * with gcc version 3.3.3 20040412 (Red Hat Linux 3.3.3-7) */
-
- /* Constants... */
- CLASSERT (LNET_PROTO_TCP_MAGIC == 0xeebc0ded);
- CLASSERT (LNET_PROTO_TCP_VERSION_MAJOR == 1);
- CLASSERT (LNET_PROTO_TCP_VERSION_MINOR == 0);
- CLASSERT (LNET_MSG_ACK == 0);
- CLASSERT (LNET_MSG_PUT == 1);
- CLASSERT (LNET_MSG_GET == 2);
- CLASSERT (LNET_MSG_REPLY == 3);
- CLASSERT (LNET_MSG_HELLO == 4);
-
- /* Checks for struct ptl_handle_wire_t */
- CLASSERT ((int)sizeof(lnet_handle_wire_t) == 16);
- CLASSERT ((int)offsetof(lnet_handle_wire_t, wh_interface_cookie) == 0);
- CLASSERT ((int)sizeof(((lnet_handle_wire_t *)0)->wh_interface_cookie) == 8);
- CLASSERT ((int)offsetof(lnet_handle_wire_t, wh_object_cookie) == 8);
- CLASSERT ((int)sizeof(((lnet_handle_wire_t *)0)->wh_object_cookie) == 8);
-
- /* Checks for struct lnet_magicversion_t */
- CLASSERT ((int)sizeof(lnet_magicversion_t) == 8);
- CLASSERT ((int)offsetof(lnet_magicversion_t, magic) == 0);
- CLASSERT ((int)sizeof(((lnet_magicversion_t *)0)->magic) == 4);
- CLASSERT ((int)offsetof(lnet_magicversion_t, version_major) == 4);
- CLASSERT ((int)sizeof(((lnet_magicversion_t *)0)->version_major) == 2);
- CLASSERT ((int)offsetof(lnet_magicversion_t, version_minor) == 6);
- CLASSERT ((int)sizeof(((lnet_magicversion_t *)0)->version_minor) == 2);
-
- /* Checks for struct lnet_hdr_t */
- CLASSERT ((int)sizeof(lnet_hdr_t) == 72);
- CLASSERT ((int)offsetof(lnet_hdr_t, dest_nid) == 0);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->dest_nid) == 8);
- CLASSERT ((int)offsetof(lnet_hdr_t, src_nid) == 8);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->src_nid) == 8);
- CLASSERT ((int)offsetof(lnet_hdr_t, dest_pid) == 16);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->dest_pid) == 4);
- CLASSERT ((int)offsetof(lnet_hdr_t, src_pid) == 20);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->src_pid) == 4);
- CLASSERT ((int)offsetof(lnet_hdr_t, type) == 24);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->type) == 4);
- CLASSERT ((int)offsetof(lnet_hdr_t, payload_length) == 28);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->payload_length) == 4);
- CLASSERT ((int)offsetof(lnet_hdr_t, msg) == 32);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg) == 40);
-
- /* Ack */
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.ack.dst_wmd) == 32);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.ack.dst_wmd) == 16);
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.ack.match_bits) == 48);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.ack.match_bits) == 8);
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.ack.mlength) == 56);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.ack.mlength) == 4);
-
- /* Put */
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.put.ack_wmd) == 32);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.put.ack_wmd) == 16);
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.put.match_bits) == 48);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.put.match_bits) == 8);
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.put.hdr_data) == 56);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.put.hdr_data) == 8);
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.put.ptl_index) == 64);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.put.ptl_index) == 4);
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.put.offset) == 68);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.put.offset) == 4);
-
- /* Get */
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.get.return_wmd) == 32);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.get.return_wmd) == 16);
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.get.match_bits) == 48);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.get.match_bits) == 8);
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.get.ptl_index) == 56);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.get.ptl_index) == 4);
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.get.src_offset) == 60);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.get.src_offset) == 4);
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.get.sink_length) == 64);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.get.sink_length) == 4);
-
- /* Reply */
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.reply.dst_wmd) == 32);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.reply.dst_wmd) == 16);
-
- /* Hello */
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.hello.incarnation) == 32);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.hello.incarnation) == 8);
- CLASSERT ((int)offsetof(lnet_hdr_t, msg.hello.type) == 40);
- CLASSERT ((int)sizeof(((lnet_hdr_t *)0)->msg.hello.type) == 4);
-}
-
-lnd_t *
-lnet_find_lnd_by_type (int type)
-{
- lnd_t *lnd;
- cfs_list_t *tmp;
-
- /* holding lnd mutex */
- cfs_list_for_each (tmp, &the_lnet.ln_lnds) {
- lnd = cfs_list_entry(tmp, lnd_t, lnd_list);
-
- if ((int)lnd->lnd_type == type)
- return lnd;
- }
-
- return NULL;
+static void lnet_assert_wire_constants(void)
+{
+ /* Wire protocol assertions generated by 'wirecheck'
+ * running on Linux robert.bartonsoftware.com 2.6.8-1.521
+ * #1 Mon Aug 16 09:01:18 EDT 2004 i686 athlon i386 GNU/Linux
+ * with gcc version 3.3.3 20040412 (Red Hat Linux 3.3.3-7) */
+
+ /* Constants... */
+ CLASSERT(LNET_PROTO_TCP_MAGIC == 0xeebc0ded);
+ CLASSERT(LNET_PROTO_TCP_VERSION_MAJOR == 1);
+ CLASSERT(LNET_PROTO_TCP_VERSION_MINOR == 0);
+ CLASSERT(LNET_MSG_ACK == 0);
+ CLASSERT(LNET_MSG_PUT == 1);
+ CLASSERT(LNET_MSG_GET == 2);
+ CLASSERT(LNET_MSG_REPLY == 3);
+ CLASSERT(LNET_MSG_HELLO == 4);
+
+ /* Checks for struct lnet_handle_wire */
+ CLASSERT((int)sizeof(struct lnet_handle_wire) == 16);
+ CLASSERT((int)offsetof(struct lnet_handle_wire, wh_interface_cookie) == 0);
+ CLASSERT((int)sizeof(((struct lnet_handle_wire *)0)->wh_interface_cookie) == 8);
+ CLASSERT((int)offsetof(struct lnet_handle_wire, wh_object_cookie) == 8);
+ CLASSERT((int)sizeof(((struct lnet_handle_wire *)0)->wh_object_cookie) == 8);
+
+ /* Checks for struct lnet_magicversion_t */
+ CLASSERT((int)sizeof(lnet_magicversion_t) == 8);
+ CLASSERT((int)offsetof(lnet_magicversion_t, magic) == 0);
+ CLASSERT((int)sizeof(((lnet_magicversion_t *)0)->magic) == 4);
+ CLASSERT((int)offsetof(lnet_magicversion_t, version_major) == 4);
+ CLASSERT((int)sizeof(((lnet_magicversion_t *)0)->version_major) == 2);
+ CLASSERT((int)offsetof(lnet_magicversion_t, version_minor) == 6);
+ CLASSERT((int)sizeof(((lnet_magicversion_t *)0)->version_minor) == 2);
+
+ /* Checks for struct lnet_hdr_t */
+ CLASSERT((int)sizeof(lnet_hdr_t) == 72);
+ CLASSERT((int)offsetof(lnet_hdr_t, dest_nid) == 0);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->dest_nid) == 8);
+ CLASSERT((int)offsetof(lnet_hdr_t, src_nid) == 8);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->src_nid) == 8);
+ CLASSERT((int)offsetof(lnet_hdr_t, dest_pid) == 16);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->dest_pid) == 4);
+ CLASSERT((int)offsetof(lnet_hdr_t, src_pid) == 20);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->src_pid) == 4);
+ CLASSERT((int)offsetof(lnet_hdr_t, type) == 24);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->type) == 4);
+ CLASSERT((int)offsetof(lnet_hdr_t, payload_length) == 28);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->payload_length) == 4);
+ CLASSERT((int)offsetof(lnet_hdr_t, msg) == 32);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg) == 40);
+
+ /* Ack */
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.ack.dst_wmd) == 32);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.ack.dst_wmd) == 16);
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.ack.match_bits) == 48);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.ack.match_bits) == 8);
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.ack.mlength) == 56);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.ack.mlength) == 4);
+
+ /* Put */
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.put.ack_wmd) == 32);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.put.ack_wmd) == 16);
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.put.match_bits) == 48);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.put.match_bits) == 8);
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.put.hdr_data) == 56);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.put.hdr_data) == 8);
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.put.ptl_index) == 64);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.put.ptl_index) == 4);
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.put.offset) == 68);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.put.offset) == 4);
+
+ /* Get */
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.get.return_wmd) == 32);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.get.return_wmd) == 16);
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.get.match_bits) == 48);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.get.match_bits) == 8);
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.get.ptl_index) == 56);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.get.ptl_index) == 4);
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.get.src_offset) == 60);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.get.src_offset) == 4);
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.get.sink_length) == 64);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.get.sink_length) == 4);
+
+ /* Reply */
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.reply.dst_wmd) == 32);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.reply.dst_wmd) == 16);
+
+ /* Hello */
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.hello.incarnation) == 32);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.hello.incarnation) == 8);
+ CLASSERT((int)offsetof(lnet_hdr_t, msg.hello.type) == 40);
+ CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.hello.type) == 4);
+}
+
+static lnd_t *lnet_find_lnd_by_type(__u32 type)
+{
+ lnd_t *lnd;
+ struct list_head *tmp;
+
+ /* holding lnd mutex */
+ list_for_each(tmp, &the_lnet.ln_lnds) {
+ lnd = list_entry(tmp, lnd_t, lnd_list);
+
+ if (lnd->lnd_type == type)
+ return lnd;
+ }
+ return NULL;
}
void
lnet_register_lnd (lnd_t *lnd)
{
- LNET_MUTEX_LOCK(&the_lnet.ln_lnd_mutex);
+ mutex_lock(&the_lnet.ln_lnd_mutex);
- LASSERT (the_lnet.ln_init);
- LASSERT (libcfs_isknown_lnd(lnd->lnd_type));
- LASSERT (lnet_find_lnd_by_type(lnd->lnd_type) == NULL);
+ LASSERT(libcfs_isknown_lnd(lnd->lnd_type));
+ LASSERT(lnet_find_lnd_by_type(lnd->lnd_type) == NULL);
- cfs_list_add_tail (&lnd->lnd_list, &the_lnet.ln_lnds);
- lnd->lnd_refcount = 0;
+ list_add_tail(&lnd->lnd_list, &the_lnet.ln_lnds);
+ lnd->lnd_refcount = 0;
- CDEBUG(D_NET, "%s LND registered\n", libcfs_lnd2str(lnd->lnd_type));
+ CDEBUG(D_NET, "%s LND registered\n", libcfs_lnd2str(lnd->lnd_type));
- LNET_MUTEX_UNLOCK(&the_lnet.ln_lnd_mutex);
+ mutex_unlock(&the_lnet.ln_lnd_mutex);
}
EXPORT_SYMBOL(lnet_register_lnd);
void
lnet_unregister_lnd (lnd_t *lnd)
{
- LNET_MUTEX_LOCK(&the_lnet.ln_lnd_mutex);
+ mutex_lock(&the_lnet.ln_lnd_mutex);
- LASSERT (the_lnet.ln_init);
- LASSERT (lnet_find_lnd_by_type(lnd->lnd_type) == lnd);
- LASSERT (lnd->lnd_refcount == 0);
+ LASSERT(lnet_find_lnd_by_type(lnd->lnd_type) == lnd);
+ LASSERT(lnd->lnd_refcount == 0);
- cfs_list_del (&lnd->lnd_list);
- CDEBUG(D_NET, "%s LND unregistered\n", libcfs_lnd2str(lnd->lnd_type));
+ list_del(&lnd->lnd_list);
+ CDEBUG(D_NET, "%s LND unregistered\n", libcfs_lnd2str(lnd->lnd_type));
- LNET_MUTEX_UNLOCK(&the_lnet.ln_lnd_mutex);
+ mutex_unlock(&the_lnet.ln_lnd_mutex);
}
EXPORT_SYMBOL(lnet_unregister_lnd);
counters->send_count += ctr->send_count;
counters->recv_count += ctr->recv_count;
counters->route_count += ctr->route_count;
- counters->drop_length += ctr->drop_length;
+ counters->drop_count += ctr->drop_count;
counters->send_length += ctr->send_length;
counters->recv_length += ctr->recv_length;
counters->route_length += ctr->route_length;
lnet_net_unlock(LNET_LOCK_EX);
}
-EXPORT_SYMBOL(lnet_counters_reset);
-
-#ifdef LNET_USE_LIB_FREELIST
-
-int
-lnet_freelist_init (lnet_freelist_t *fl, int n, int size)
-{
- char *space;
-
- LASSERT (n > 0);
-
- size += offsetof (lnet_freeobj_t, fo_contents);
-
- LIBCFS_ALLOC(space, n * size);
- if (space == NULL)
- return (-ENOMEM);
-
- CFS_INIT_LIST_HEAD (&fl->fl_list);
- fl->fl_objs = space;
- fl->fl_nobjs = n;
- fl->fl_objsize = size;
-
- do
- {
- memset (space, 0, size);
- cfs_list_add ((cfs_list_t *)space, &fl->fl_list);
- space += size;
- } while (--n != 0);
-
- return (0);
-}
-
-void
-lnet_freelist_fini (lnet_freelist_t *fl)
-{
- cfs_list_t *el;
- int count;
-
- if (fl->fl_nobjs == 0)
- return;
-
- count = 0;
- for (el = fl->fl_list.next; el != &fl->fl_list; el = el->next)
- count++;
-
- LASSERT (count == fl->fl_nobjs);
-
- LIBCFS_FREE(fl->fl_objs, fl->fl_nobjs * fl->fl_objsize);
- memset (fl, 0, sizeof (*fl));
-}
-
-#endif /* LNET_USE_LIB_FREELIST */
-
-__u64 lnet_create_interface_cookie (void)
-{
- /* NB the interface cookie in wire handles guards against delayed
- * replies and ACKs appearing valid after reboot. Initialisation time,
- * even if it's only implemented to millisecond resolution is probably
- * easily good enough. */
- struct timeval tv;
- __u64 cookie;
-#ifndef __KERNEL__
- int rc = gettimeofday (&tv, NULL);
- LASSERT (rc == 0);
-#else
- do_gettimeofday(&tv);
-#endif
- cookie = tv.tv_sec;
- cookie *= 1000000;
- cookie += tv.tv_usec;
- return cookie;
-}
static char *
lnet_res_type2str(int type)
}
}
-void
+static void
lnet_res_container_cleanup(struct lnet_res_container *rec)
{
int count = 0;
if (rec->rec_type == 0) /* not set yet, it's uninitialized */
return;
- while (!cfs_list_empty(&rec->rec_active)) {
- cfs_list_t *e = rec->rec_active.next;
+ while (!list_empty(&rec->rec_active)) {
+ struct list_head *e = rec->rec_active.next;
- cfs_list_del_init(e);
+ list_del_init(e);
if (rec->rec_type == LNET_COOKIE_TYPE_EQ) {
- lnet_eq_free(cfs_list_entry(e, lnet_eq_t, eq_list));
+ lnet_eq_free(list_entry(e, lnet_eq_t, eq_list));
} else if (rec->rec_type == LNET_COOKIE_TYPE_MD) {
- lnet_md_free(cfs_list_entry(e, lnet_libmd_t, md_list));
+ lnet_md_free(list_entry(e, lnet_libmd_t, md_list));
} else { /* NB: Active MEs should be attached on portals */
LBUG();
count, lnet_res_type2str(rec->rec_type));
}
-#ifdef LNET_USE_LIB_FREELIST
- lnet_freelist_fini(&rec->rec_freelist);
-#endif
if (rec->rec_lh_hash != NULL) {
LIBCFS_FREE(rec->rec_lh_hash,
LNET_LH_HASH_SIZE * sizeof(rec->rec_lh_hash[0]));
rec->rec_type = 0; /* mark it as finalized */
}
-int
-lnet_res_container_setup(struct lnet_res_container *rec,
- int cpt, int type, int objnum, int objsz)
+static int
+lnet_res_container_setup(struct lnet_res_container *rec, int cpt, int type)
{
int rc = 0;
int i;
LASSERT(rec->rec_type == 0);
rec->rec_type = type;
- CFS_INIT_LIST_HEAD(&rec->rec_active);
+ INIT_LIST_HEAD(&rec->rec_active);
-#ifdef LNET_USE_LIB_FREELIST
- memset(&rec->rec_freelist, 0, sizeof(rec->rec_freelist));
- rc = lnet_freelist_init(&rec->rec_freelist, objnum, objsz);
- if (rc != 0)
- goto out;
-#endif
rec->rec_lh_cookie = (cpt << LNET_COOKIE_TYPE_BITS) | type;
/* Arbitrary choice of hash table size */
}
for (i = 0; i < LNET_LH_HASH_SIZE; i++)
- CFS_INIT_LIST_HEAD(&rec->rec_lh_hash[i]);
+ INIT_LIST_HEAD(&rec->rec_lh_hash[i]);
return 0;
}
static struct lnet_res_container **
-lnet_res_containers_create(int type, int objnum, int objsz)
+lnet_res_containers_create(int type)
{
struct lnet_res_container **recs;
struct lnet_res_container *rec;
}
cfs_percpt_for_each(rec, i, recs) {
- rc = lnet_res_container_setup(rec, i, type, objnum, objsz);
+ rc = lnet_res_container_setup(rec, i, type);
if (rc != 0) {
lnet_res_containers_destroy(recs);
return NULL;
lnet_res_lh_lookup(struct lnet_res_container *rec, __u64 cookie)
{
/* ALWAYS called with lnet_res_lock held */
- cfs_list_t *head;
+ struct list_head *head;
lnet_libhandle_t *lh;
unsigned int hash;
hash = cookie >> (LNET_COOKIE_TYPE_BITS + LNET_CPT_BITS);
head = &rec->rec_lh_hash[hash & LNET_LH_HASH_MASK];
- cfs_list_for_each_entry(lh, head, lh_hash_chain) {
+ list_for_each_entry(lh, head, lh_hash_chain) {
if (lh->lh_cookie == cookie)
return lh;
}
hash = (lh->lh_cookie >> ibits) & LNET_LH_HASH_MASK;
- cfs_list_add(&lh->lh_hash_chain, &rec->rec_lh_hash[hash]);
-}
-
-#ifndef __KERNEL__
-/**
- * Reserved API - do not use.
- * Temporary workaround to allow uOSS and test programs force server
- * mode in userspace. See comments near ln_server_mode_flag in
- * lnet/lib-types.h */
-
-void
-lnet_server_mode() {
- the_lnet.ln_server_mode_flag = 1;
+ list_add(&lh->lh_hash_chain, &rec->rec_lh_hash[hash]);
}
-#endif
-int lnet_unprepare(void);
+static int lnet_unprepare(void);
-int
+static int
lnet_prepare(lnet_pid_t requested_pid)
{
/* Prepare to bring up the network */
struct lnet_res_container **recs;
int rc = 0;
- LASSERT (the_lnet.ln_refcount == 0);
-
- the_lnet.ln_routing = 0;
+ if (requested_pid == LNET_PID_ANY) {
+ /* Don't instantiate LNET just for me */
+ return -ENETDOWN;
+ }
-#ifdef __KERNEL__
- LASSERT ((requested_pid & LNET_PID_USERFLAG) == 0);
- the_lnet.ln_pid = requested_pid;
-#else
- if (the_lnet.ln_server_mode_flag) {/* server case (uOSS) */
- LASSERT ((requested_pid & LNET_PID_USERFLAG) == 0);
+ LASSERT(the_lnet.ln_refcount == 0);
- if (current_uid() != 0) /* Only root can run user-space server */
- return -EPERM;
- the_lnet.ln_pid = requested_pid;
+ the_lnet.ln_routing = 0;
- } else {/* client case (liblustre) */
+ LASSERT((requested_pid & LNET_PID_USERFLAG) == 0);
+ the_lnet.ln_pid = requested_pid;
- /* My PID must be unique on this node and flag I'm userspace */
- the_lnet.ln_pid = getpid() | LNET_PID_USERFLAG;
- }
-#endif
+ INIT_LIST_HEAD(&the_lnet.ln_test_peers);
+ INIT_LIST_HEAD(&the_lnet.ln_peers);
+ INIT_LIST_HEAD(&the_lnet.ln_remote_peer_ni_list);
+ INIT_LIST_HEAD(&the_lnet.ln_nets);
+ INIT_LIST_HEAD(&the_lnet.ln_routers);
+ INIT_LIST_HEAD(&the_lnet.ln_drop_rules);
+ INIT_LIST_HEAD(&the_lnet.ln_delay_rules);
- CFS_INIT_LIST_HEAD(&the_lnet.ln_test_peers);
- CFS_INIT_LIST_HEAD(&the_lnet.ln_nis);
- CFS_INIT_LIST_HEAD(&the_lnet.ln_nis_cpt);
- CFS_INIT_LIST_HEAD(&the_lnet.ln_nis_zombie);
- CFS_INIT_LIST_HEAD(&the_lnet.ln_routers);
+ rc = lnet_descriptor_setup();
+ if (rc != 0)
+ goto failed;
rc = lnet_create_remote_nets_table();
if (rc != 0)
goto failed;
- the_lnet.ln_interface_cookie = lnet_create_interface_cookie();
+ /*
+ * NB the interface cookie in wire handles guards against delayed
+ * replies and ACKs appearing valid after reboot.
+ */
+ the_lnet.ln_interface_cookie = ktime_get_real_ns();
the_lnet.ln_counters = cfs_percpt_alloc(lnet_cpt_table(),
sizeof(lnet_counters_t));
goto failed;
rc = lnet_res_container_setup(&the_lnet.ln_eq_container, 0,
- LNET_COOKIE_TYPE_EQ, LNET_FL_MAX_EQS,
- sizeof(lnet_eq_t));
+ LNET_COOKIE_TYPE_EQ);
if (rc != 0)
goto failed;
- recs = lnet_res_containers_create(LNET_COOKIE_TYPE_ME, LNET_FL_MAX_MES,
- sizeof(lnet_me_t));
- if (recs == NULL)
+ recs = lnet_res_containers_create(LNET_COOKIE_TYPE_ME);
+ if (recs == NULL) {
+ rc = -ENOMEM;
goto failed;
+ }
the_lnet.ln_me_containers = recs;
- recs = lnet_res_containers_create(LNET_COOKIE_TYPE_MD, LNET_FL_MAX_MDS,
- sizeof(lnet_libmd_t));
- if (recs == NULL)
+ recs = lnet_res_containers_create(LNET_COOKIE_TYPE_MD);
+ if (recs == NULL) {
+ rc = -ENOMEM;
goto failed;
+ }
the_lnet.ln_md_containers = recs;
return rc;
}
-int
+static int
lnet_unprepare (void)
{
- /* NB no LNET_LOCK since this is the last reference. All LND instances
- * have shut down already, so it is safe to unlink and free all
- * descriptors, even those that appear committed to a network op (eg MD
- * with non-zero pending count) */
+ /* NB no LNET_LOCK since this is the last reference. All LND instances
+ * have shut down already, so it is safe to unlink and free all
+ * descriptors, even those that appear committed to a network op (eg MD
+ * with non-zero pending count) */
lnet_fail_nid(LNET_NID_ANY, 0);
LASSERT(the_lnet.ln_refcount == 0);
- LASSERT(cfs_list_empty(&the_lnet.ln_test_peers));
- LASSERT(cfs_list_empty(&the_lnet.ln_nis));
- LASSERT(cfs_list_empty(&the_lnet.ln_nis_cpt));
- LASSERT(cfs_list_empty(&the_lnet.ln_nis_zombie));
+ LASSERT(list_empty(&the_lnet.ln_test_peers));
+ LASSERT(list_empty(&the_lnet.ln_nets));
lnet_portals_destroy();
lnet_res_container_cleanup(&the_lnet.ln_eq_container);
lnet_msg_containers_destroy();
- lnet_peer_tables_destroy();
- lnet_rtrpools_free();
+ lnet_peer_uninit();
+ lnet_rtrpools_free(0);
if (the_lnet.ln_counters != NULL) {
cfs_percpt_free(the_lnet.ln_counters);
the_lnet.ln_counters = NULL;
}
lnet_destroy_remote_nets_table();
+ lnet_descriptor_cleanup();
return 0;
}
lnet_ni_t *
-lnet_net2ni_locked(__u32 net, int cpt)
+lnet_net2ni_locked(__u32 net_id, int cpt)
{
- cfs_list_t *tmp;
- lnet_ni_t *ni;
+ struct lnet_ni *ni;
+ struct lnet_net *net;
LASSERT(cpt != LNET_LOCK_EX);
- cfs_list_for_each(tmp, &the_lnet.ln_nis) {
- ni = cfs_list_entry(tmp, lnet_ni_t, ni_list);
-
- if (LNET_NIDNET(ni->ni_nid) == net) {
- lnet_ni_addref_locked(ni, cpt);
+ list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
+ if (net->net_id == net_id) {
+ ni = list_entry(net->net_ni_list.next, struct lnet_ni,
+ ni_netlist);
return ni;
}
}
}
lnet_ni_t *
-lnet_net2ni(__u32 net)
+lnet_net2ni_addref(__u32 net)
{
lnet_ni_t *ni;
lnet_net_lock(0);
ni = lnet_net2ni_locked(net, 0);
+ if (ni)
+ lnet_ni_addref_locked(ni, 0);
lnet_net_unlock(0);
return ni;
}
-EXPORT_SYMBOL(lnet_net2ni);
+EXPORT_SYMBOL(lnet_net2ni_addref);
+
+struct lnet_net *
+lnet_get_net_locked(__u32 net_id)
+{
+ struct lnet_net *net;
+
+ list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
+ if (net->net_id == net_id)
+ return net;
+ }
+
+ return NULL;
+}
-static unsigned int
+unsigned int
lnet_nid_cpt_hash(lnet_nid_t nid, unsigned int number)
{
__u64 key = nid;
if (number == 1)
return 0;
- val = cfs_hash_long(key, LNET_CPT_BITS);
+ val = hash_long(key, LNET_CPT_BITS);
/* NB: LNET_CP_NUMBER doesn't have to be PO2 */
if (val < number)
return val;
}
int
-lnet_cpt_of_nid_locked(lnet_nid_t nid)
+lnet_cpt_of_nid_locked(lnet_nid_t nid, struct lnet_ni *ni)
{
- struct lnet_ni *ni;
+ struct lnet_net *net;
/* must called with hold of lnet_net_lock */
if (LNET_CPT_NUMBER == 1)
return 0; /* the only one */
- /* take lnet_net_lock(any) would be OK */
- if (!cfs_list_empty(&the_lnet.ln_nis_cpt)) {
- cfs_list_for_each_entry(ni, &the_lnet.ln_nis_cpt, ni_cptlist) {
- if (LNET_NIDNET(ni->ni_nid) != LNET_NIDNET(nid))
- continue;
+ /*
+ * If NI is provided then use the CPT identified in the NI cpt
+ * list if one exists. If one doesn't exist, then that NI is
+ * associated with all CPTs and it follows that the net it belongs
+ * to is implicitly associated with all CPTs, so just hash the nid
+ * and return that.
+ */
+ if (ni != NULL) {
+ if (ni->ni_cpts != NULL)
+ return ni->ni_cpts[lnet_nid_cpt_hash(nid,
+ ni->ni_ncpts)];
+ else
+ return lnet_nid_cpt_hash(nid, LNET_CPT_NUMBER);
+ }
- LASSERT(ni->ni_cpts != NULL);
- return ni->ni_cpts[lnet_nid_cpt_hash
- (nid, ni->ni_ncpts)];
- }
+ /* no NI provided so look at the net */
+ net = lnet_get_net_locked(LNET_NIDNET(nid));
+
+ if (net != NULL && net->net_cpts != NULL) {
+ return net->net_cpts[lnet_nid_cpt_hash(nid, net->net_ncpts)];
}
return lnet_nid_cpt_hash(nid, LNET_CPT_NUMBER);
}
int
-lnet_cpt_of_nid(lnet_nid_t nid)
+lnet_cpt_of_nid(lnet_nid_t nid, struct lnet_ni *ni)
{
int cpt;
int cpt2;
if (LNET_CPT_NUMBER == 1)
return 0; /* the only one */
- if (cfs_list_empty(&the_lnet.ln_nis_cpt))
- return lnet_nid_cpt_hash(nid, LNET_CPT_NUMBER);
-
cpt = lnet_net_lock_current();
- cpt2 = lnet_cpt_of_nid_locked(nid);
+
+ cpt2 = lnet_cpt_of_nid_locked(nid, ni);
+
lnet_net_unlock(cpt);
return cpt2;
EXPORT_SYMBOL(lnet_cpt_of_nid);
int
-lnet_islocalnet(__u32 net)
+lnet_islocalnet(__u32 net_id)
{
- struct lnet_ni *ni;
+ struct lnet_net *net;
int cpt;
+ bool local;
cpt = lnet_net_lock_current();
- ni = lnet_net2ni_locked(net, cpt);
- if (ni != NULL)
- lnet_ni_decref_locked(ni, cpt);
+ net = lnet_get_net_locked(net_id);
+
+ local = net != NULL;
lnet_net_unlock(cpt);
- return ni != NULL;
+ return local;
+}
+
+bool
+lnet_is_ni_healthy_locked(struct lnet_ni *ni)
+{
+ if (ni->ni_state == LNET_NI_STATE_ACTIVE ||
+ ni->ni_state == LNET_NI_STATE_DEGRADED)
+ return true;
+
+ return false;
}
lnet_ni_t *
lnet_nid2ni_locked(lnet_nid_t nid, int cpt)
{
- struct lnet_ni *ni;
- cfs_list_t *tmp;
+ struct lnet_net *net;
+ struct lnet_ni *ni;
LASSERT(cpt != LNET_LOCK_EX);
- cfs_list_for_each(tmp, &the_lnet.ln_nis) {
- ni = cfs_list_entry(tmp, lnet_ni_t, ni_list);
-
- if (ni->ni_nid == nid) {
- lnet_ni_addref_locked(ni, cpt);
- return ni;
+ list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
+ list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
+ if (ni->ni_nid == nid)
+ return ni;
}
}
return NULL;
}
+lnet_ni_t *
+lnet_nid2ni_addref(lnet_nid_t nid)
+{
+ lnet_ni_t *ni;
+
+ lnet_net_lock(0);
+ ni = lnet_nid2ni_locked(nid, 0);
+ if (ni)
+ lnet_ni_addref_locked(ni, 0);
+ lnet_net_unlock(0);
+
+ return ni;
+}
+EXPORT_SYMBOL(lnet_nid2ni_addref);
+
int
lnet_islocalnid(lnet_nid_t nid)
{
cpt = lnet_net_lock_current();
ni = lnet_nid2ni_locked(nid, cpt);
- if (ni != NULL)
- lnet_ni_decref_locked(ni, cpt);
lnet_net_unlock(cpt);
return ni != NULL;
}
int
-lnet_count_acceptor_nis (void)
+lnet_count_acceptor_nets(void)
{
/* Return the # of NIs that need the acceptor. */
- int count = 0;
-#if defined(__KERNEL__) || defined(HAVE_LIBPTHREAD)
- cfs_list_t *tmp;
- struct lnet_ni *ni;
- int cpt;
+ int count = 0;
+ struct lnet_net *net;
+ int cpt;
cpt = lnet_net_lock_current();
- cfs_list_for_each(tmp, &the_lnet.ln_nis) {
- ni = cfs_list_entry(tmp, lnet_ni_t, ni_list);
-
- if (ni->ni_lnd->lnd_accept != NULL)
+ list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
+ /* all socklnd type networks should have the acceptor
+ * thread started */
+ if (net->net_lnd->lnd_accept != NULL)
count++;
}
lnet_net_unlock(cpt);
-#endif /* defined(__KERNEL__) || defined(HAVE_LIBPTHREAD) */
return count;
}
-static int
-lnet_ni_tq_credits(lnet_ni_t *ni)
+static struct lnet_ping_info *
+lnet_ping_info_create(int num_ni)
{
- int credits;
+ struct lnet_ping_info *ping_info;
+ unsigned int infosz;
- LASSERT(ni->ni_ncpts >= 1);
+ infosz = offsetof(struct lnet_ping_info, pi_ni[num_ni]);
+ LIBCFS_ALLOC(ping_info, infosz);
+ if (ping_info == NULL) {
+ CERROR("Can't allocate ping info[%d]\n", num_ni);
+ return NULL;
+ }
- if (ni->ni_ncpts == 1)
- return ni->ni_maxtxcredits;
+ ping_info->pi_nnis = num_ni;
+ ping_info->pi_pid = the_lnet.ln_pid;
+ ping_info->pi_magic = LNET_PROTO_PING_MAGIC;
+ ping_info->pi_features = LNET_PING_FEAT_NI_STATUS;
- credits = ni->ni_maxtxcredits / ni->ni_ncpts;
- credits = max(credits, 8 * ni->ni_peertxcredits);
- credits = min(credits, ni->ni_maxtxcredits);
+ return ping_info;
+}
- return credits;
+static inline int
+lnet_get_net_ni_count_locked(struct lnet_net *net)
+{
+ struct lnet_ni *ni;
+ int count = 0;
+
+ list_for_each_entry(ni, &net->net_ni_list, ni_netlist)
+ count++;
+
+ return count;
}
-void
-lnet_shutdown_lndnis (void)
+static inline int
+lnet_get_net_ni_count_pre(struct lnet_net *net)
{
- int i;
- int islo;
- lnet_ni_t *ni;
+ struct lnet_ni *ni;
+ int count = 0;
- /* NB called holding the global mutex */
+ list_for_each_entry(ni, &net->net_ni_added, ni_netlist)
+ count++;
- /* All quiet on the API front */
- LASSERT(!the_lnet.ln_shutdown);
- LASSERT(the_lnet.ln_refcount == 0);
- LASSERT(cfs_list_empty(&the_lnet.ln_nis_zombie));
+ return count;
+}
- lnet_net_lock(LNET_LOCK_EX);
- the_lnet.ln_shutdown = 1; /* flag shutdown */
+static inline int
+lnet_get_ni_count(void)
+{
+ struct lnet_ni *ni;
+ struct lnet_net *net;
+ int count = 0;
- /* Unlink NIs from the global table */
- while (!cfs_list_empty(&the_lnet.ln_nis)) {
- ni = cfs_list_entry(the_lnet.ln_nis.next,
- lnet_ni_t, ni_list);
- /* move it to zombie list and nobody can find it anymore */
- cfs_list_move(&ni->ni_list, &the_lnet.ln_nis_zombie);
- lnet_ni_decref_locked(ni, 0); /* drop ln_nis' ref */
-
- if (!cfs_list_empty(&ni->ni_cptlist)) {
- cfs_list_del_init(&ni->ni_cptlist);
- lnet_ni_decref_locked(ni, 0);
- }
- }
+ lnet_net_lock(0);
- /* Drop the cached eqwait NI. */
- if (the_lnet.ln_eq_waitni != NULL) {
- lnet_ni_decref_locked(the_lnet.ln_eq_waitni, 0);
- the_lnet.ln_eq_waitni = NULL;
+ list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
+ list_for_each_entry(ni, &net->net_ni_list, ni_netlist)
+ count++;
}
- /* Drop the cached loopback NI. */
- if (the_lnet.ln_loni != NULL) {
- lnet_ni_decref_locked(the_lnet.ln_loni, 0);
- the_lnet.ln_loni = NULL;
- }
+ lnet_net_unlock(0);
- lnet_net_unlock(LNET_LOCK_EX);
+ return count;
+}
- /* Clear lazy portals and drop delayed messages which hold refs
- * on their lnet_msg_t::msg_rxpeer */
- for (i = 0; i < the_lnet.ln_nportals; i++)
- LNetClearLazyPortal(i);
+static inline void
+lnet_ping_info_free(struct lnet_ping_info *pinfo)
+{
+ LIBCFS_FREE(pinfo,
+ offsetof(struct lnet_ping_info,
+ pi_ni[pinfo->pi_nnis]));
+}
- /* Clear the peer table and wait for all peers to go (they hold refs on
- * their NIs) */
- lnet_peer_tables_cleanup();
+static void
+lnet_ping_info_destroy(void)
+{
+ struct lnet_net *net;
+ struct lnet_ni *ni;
lnet_net_lock(LNET_LOCK_EX);
- /* Now wait for the NI's I just nuked to show up on ln_zombie_nis
- * and shut them down in guaranteed thread context */
- i = 2;
- while (!cfs_list_empty(&the_lnet.ln_nis_zombie)) {
- int *ref;
- int j;
- ni = cfs_list_entry(the_lnet.ln_nis_zombie.next,
- lnet_ni_t, ni_list);
- cfs_list_del_init(&ni->ni_list);
- cfs_percpt_for_each(ref, j, ni->ni_refs) {
- if (*ref == 0)
- continue;
- /* still busy, add it back to zombie list */
- cfs_list_add(&ni->ni_list, &the_lnet.ln_nis_zombie);
- break;
+ list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
+ list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
+ lnet_ni_lock(ni);
+ ni->ni_status = NULL;
+ lnet_ni_unlock(ni);
}
+ }
- while (!cfs_list_empty(&ni->ni_list)) {
- lnet_net_unlock(LNET_LOCK_EX);
- ++i;
- if ((i & (-i)) == i) {
- CDEBUG(D_WARNING,
- "Waiting for zombie LNI %s\n",
- libcfs_nid2str(ni->ni_nid));
- }
- cfs_pause(cfs_time_seconds(1));
- lnet_net_lock(LNET_LOCK_EX);
- continue;
- }
+ lnet_ping_info_free(the_lnet.ln_ping_info);
+ the_lnet.ln_ping_info = NULL;
- ni->ni_lnd->lnd_refcount--;
- lnet_net_unlock(LNET_LOCK_EX);
+ lnet_net_unlock(LNET_LOCK_EX);
+}
- islo = ni->ni_lnd->lnd_type == LOLND;
+static void
+lnet_ping_event_handler(lnet_event_t *event)
+{
+ struct lnet_ping_info *pinfo = event->md.user_ptr;
- LASSERT (!cfs_in_interrupt ());
- (ni->ni_lnd->lnd_shutdown)(ni);
+ if (event->unlinked)
+ pinfo->pi_features = LNET_PING_FEAT_INVAL;
+}
- /* can't deref lnd anymore now; it might have unregistered
- * itself... */
+static int
+lnet_ping_info_setup(struct lnet_ping_info **ppinfo, lnet_handle_md_t *md_handle,
+ int ni_count, bool set_eq)
+{
+ lnet_handle_me_t me_handle;
+ lnet_process_id_t id = {LNET_NID_ANY, LNET_PID_ANY};
+ lnet_md_t md = {NULL};
+ int rc, rc2;
+
+ if (set_eq) {
+ rc = LNetEQAlloc(0, lnet_ping_event_handler,
+ &the_lnet.ln_ping_target_eq);
+ if (rc != 0) {
+ CERROR("Can't allocate ping EQ: %d\n", rc);
+ return rc;
+ }
+ }
- if (!islo)
- CDEBUG(D_LNI, "Removed LNI %s\n",
- libcfs_nid2str(ni->ni_nid));
+ *ppinfo = lnet_ping_info_create(ni_count);
+ if (*ppinfo == NULL) {
+ rc = -ENOMEM;
+ goto failed_0;
+ }
- lnet_ni_free(ni);
- lnet_net_lock(LNET_LOCK_EX);
+ rc = LNetMEAttach(LNET_RESERVED_PORTAL, id,
+ LNET_PROTO_PING_MATCHBITS, 0,
+ LNET_UNLINK, LNET_INS_AFTER,
+ &me_handle);
+ if (rc != 0) {
+ CERROR("Can't create ping ME: %d\n", rc);
+ goto failed_1;
}
- the_lnet.ln_shutdown = 0;
- lnet_net_unlock(LNET_LOCK_EX);
+ /* initialize md content */
+ md.start = *ppinfo;
+ md.length = offsetof(struct lnet_ping_info,
+ pi_ni[(*ppinfo)->pi_nnis]);
+ md.threshold = LNET_MD_THRESH_INF;
+ md.max_size = 0;
+ md.options = LNET_MD_OP_GET | LNET_MD_TRUNCATE |
+ LNET_MD_MANAGE_REMOTE;
+ md.user_ptr = NULL;
+ md.eq_handle = the_lnet.ln_ping_target_eq;
+ md.user_ptr = *ppinfo;
+
+ rc = LNetMDAttach(me_handle, md, LNET_RETAIN, md_handle);
+ if (rc != 0) {
+ CERROR("Can't attach ping MD: %d\n", rc);
+ goto failed_2;
+ }
+
+ return 0;
+
+failed_2:
+ rc2 = LNetMEUnlink(me_handle);
+ LASSERT(rc2 == 0);
+failed_1:
+ lnet_ping_info_free(*ppinfo);
+ *ppinfo = NULL;
+failed_0:
+ if (set_eq)
+ LNetEQFree(the_lnet.ln_ping_target_eq);
+ return rc;
+}
+
+static void
+lnet_ping_md_unlink(struct lnet_ping_info *pinfo, lnet_handle_md_t *md_handle)
+{
+ sigset_t blocked = cfs_block_allsigs();
- if (the_lnet.ln_network_tokens != NULL) {
- LIBCFS_FREE(the_lnet.ln_network_tokens,
- the_lnet.ln_network_tokens_nob);
- the_lnet.ln_network_tokens = NULL;
+ LNetMDUnlink(*md_handle);
+ LNetInvalidateHandle(md_handle);
+
+ /* NB md could be busy; this just starts the unlink */
+ while (pinfo->pi_features != LNET_PING_FEAT_INVAL) {
+ CDEBUG(D_NET, "Still waiting for ping MD to unlink\n");
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(cfs_time_seconds(1));
}
+
+ cfs_restore_sigs(blocked);
}
-int
-lnet_startup_lndnis (void)
+static void
+lnet_ping_info_install_locked(struct lnet_ping_info *ping_info)
{
- lnd_t *lnd;
+ int i;
struct lnet_ni *ni;
+ struct lnet_net *net;
+ struct lnet_ni_status *ns;
+
+ i = 0;
+ list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
+ list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
+ LASSERT(i < ping_info->pi_nnis);
+
+ ns = &ping_info->pi_ni[i];
+
+ ns->ns_nid = ni->ni_nid;
+
+ lnet_ni_lock(ni);
+ ns->ns_status = (ni->ni_status != NULL) ?
+ ni->ni_status->ns_status :
+ LNET_NI_STATUS_UP;
+ ni->ni_status = ns;
+ lnet_ni_unlock(ni);
+
+ i++;
+ }
+
+ }
+}
+
+static void
+lnet_ping_target_update(struct lnet_ping_info *pinfo, lnet_handle_md_t md_handle)
+{
+ struct lnet_ping_info *old_pinfo = NULL;
+ lnet_handle_md_t old_md;
+
+ /* switch the NIs to point to the new ping info created */
+ lnet_net_lock(LNET_LOCK_EX);
+
+ if (!the_lnet.ln_routing)
+ pinfo->pi_features |= LNET_PING_FEAT_RTE_DISABLED;
+ lnet_ping_info_install_locked(pinfo);
+
+ if (the_lnet.ln_ping_info != NULL) {
+ old_pinfo = the_lnet.ln_ping_info;
+ old_md = the_lnet.ln_ping_target_md;
+ }
+ the_lnet.ln_ping_target_md = md_handle;
+ the_lnet.ln_ping_info = pinfo;
+
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ if (old_pinfo != NULL) {
+ /* unlink the old ping info */
+ lnet_ping_md_unlink(old_pinfo, &old_md);
+ lnet_ping_info_free(old_pinfo);
+ }
+}
+
+static void
+lnet_ping_target_fini(void)
+{
+ int rc;
+
+ lnet_ping_md_unlink(the_lnet.ln_ping_info,
+ &the_lnet.ln_ping_target_md);
+
+ rc = LNetEQFree(the_lnet.ln_ping_target_eq);
+ LASSERT(rc == 0);
+
+ lnet_ping_info_destroy();
+}
+
+static int
+lnet_ni_tq_credits(lnet_ni_t *ni)
+{
+ int credits;
+
+ LASSERT(ni->ni_ncpts >= 1);
+
+ if (ni->ni_ncpts == 1)
+ return ni->ni_net->net_tunables.lct_max_tx_credits;
+
+ credits = ni->ni_net->net_tunables.lct_max_tx_credits / ni->ni_ncpts;
+ credits = max(credits, 8 * ni->ni_net->net_tunables.lct_peer_tx_credits);
+ credits = min(credits, ni->ni_net->net_tunables.lct_max_tx_credits);
+
+ return credits;
+}
+
+static void
+lnet_ni_unlink_locked(lnet_ni_t *ni)
+{
+ if (!list_empty(&ni->ni_cptlist)) {
+ list_del_init(&ni->ni_cptlist);
+ lnet_ni_decref_locked(ni, 0);
+ }
+
+ /* move it to zombie list and nobody can find it anymore */
+ LASSERT(!list_empty(&ni->ni_netlist));
+ list_move(&ni->ni_netlist, &ni->ni_net->net_ni_zombie);
+ lnet_ni_decref_locked(ni, 0);
+}
+
+static void
+lnet_clear_zombies_nis_locked(struct lnet_net *net)
+{
+ int i;
+ int islo;
+ lnet_ni_t *ni;
+ struct list_head *zombie_list = &net->net_ni_zombie;
+
+ /*
+ * Now wait for the NIs I just nuked to show up on the zombie
+ * list and shut them down in guaranteed thread context
+ */
+ i = 2;
+ while (!list_empty(zombie_list)) {
+ int *ref;
+ int j;
+
+ ni = list_entry(zombie_list->next,
+ lnet_ni_t, ni_netlist);
+ list_del_init(&ni->ni_netlist);
+ /* the ni should be in deleting state. If it's not it's
+ * a bug */
+ LASSERT(ni->ni_state == LNET_NI_STATE_DELETING);
+ cfs_percpt_for_each(ref, j, ni->ni_refs) {
+ if (*ref == 0)
+ continue;
+ /* still busy, add it back to zombie list */
+ list_add(&ni->ni_netlist, zombie_list);
+ break;
+ }
+
+ if (!list_empty(&ni->ni_netlist)) {
+ lnet_net_unlock(LNET_LOCK_EX);
+ ++i;
+ if ((i & (-i)) == i) {
+ CDEBUG(D_WARNING,
+ "Waiting for zombie LNI %s\n",
+ libcfs_nid2str(ni->ni_nid));
+ }
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(cfs_time_seconds(1));
+ lnet_net_lock(LNET_LOCK_EX);
+ continue;
+ }
+
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ islo = ni->ni_net->net_lnd->lnd_type == LOLND;
+
+ LASSERT(!in_interrupt());
+ (net->net_lnd->lnd_shutdown)(ni);
+
+ if (!islo)
+ CDEBUG(D_LNI, "Removed LNI %s\n",
+ libcfs_nid2str(ni->ni_nid));
+
+ lnet_ni_free(ni);
+ i = 2;
+ lnet_net_lock(LNET_LOCK_EX);
+ }
+}
+
+/* shutdown down the NI and release refcount */
+static void
+lnet_shutdown_lndni(struct lnet_ni *ni)
+{
+ int i;
+ struct lnet_net *net = ni->ni_net;
+
+ lnet_net_lock(LNET_LOCK_EX);
+ ni->ni_state = LNET_NI_STATE_DELETING;
+ lnet_ni_unlink_locked(ni);
+ lnet_incr_dlc_seq();
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ /* clear messages for this NI on the lazy portal */
+ for (i = 0; i < the_lnet.ln_nportals; i++)
+ lnet_clear_lazy_portal(ni, i, "Shutting down NI");
+
+ lnet_net_lock(LNET_LOCK_EX);
+ lnet_clear_zombies_nis_locked(net);
+ lnet_net_unlock(LNET_LOCK_EX);
+}
+
+static void
+lnet_shutdown_lndnet(struct lnet_net *net)
+{
+ struct lnet_ni *ni;
+
+ lnet_net_lock(LNET_LOCK_EX);
+
+ net->net_state = LNET_NET_STATE_DELETING;
+
+ list_del_init(&net->net_list);
+
+ while (!list_empty(&net->net_ni_list)) {
+ ni = list_entry(net->net_ni_list.next,
+ lnet_ni_t, ni_netlist);
+ lnet_net_unlock(LNET_LOCK_EX);
+ lnet_shutdown_lndni(ni);
+ lnet_net_lock(LNET_LOCK_EX);
+ }
+
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ /* Do peer table cleanup for this net */
+ lnet_peer_tables_cleanup(net);
+
+ lnet_net_lock(LNET_LOCK_EX);
+ /*
+ * decrement ref count on lnd only when the entire network goes
+ * away
+ */
+ net->net_lnd->lnd_refcount--;
+
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ lnet_net_free(net);
+}
+
+static void
+lnet_shutdown_lndnets(void)
+{
+ struct lnet_net *net;
+
+ /* NB called holding the global mutex */
+
+ /* All quiet on the API front */
+ LASSERT(!the_lnet.ln_shutdown);
+ LASSERT(the_lnet.ln_refcount == 0);
+
+ lnet_net_lock(LNET_LOCK_EX);
+ the_lnet.ln_shutdown = 1; /* flag shutdown */
+
+ while (!list_empty(&the_lnet.ln_nets)) {
+ /*
+ * move the nets to the zombie list to avoid them being
+ * picked up for new work. LONET is also included in the
+ * Nets that will be moved to the zombie list
+ */
+ net = list_entry(the_lnet.ln_nets.next,
+ struct lnet_net, net_list);
+ list_move(&net->net_list, &the_lnet.ln_net_zombie);
+ }
+
+ /* Drop the cached loopback Net. */
+ if (the_lnet.ln_loni != NULL) {
+ lnet_ni_decref_locked(the_lnet.ln_loni, 0);
+ the_lnet.ln_loni = NULL;
+ }
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ /* iterate through the net zombie list and delete each net */
+ while (!list_empty(&the_lnet.ln_net_zombie)) {
+ net = list_entry(the_lnet.ln_net_zombie.next,
+ struct lnet_net, net_list);
+ lnet_shutdown_lndnet(net);
+ }
+
+ lnet_net_lock(LNET_LOCK_EX);
+ the_lnet.ln_shutdown = 0;
+ lnet_net_unlock(LNET_LOCK_EX);
+}
+
+static int
+lnet_startup_lndni(struct lnet_ni *ni, struct lnet_lnd_tunables *tun)
+{
+ int rc = -EINVAL;
struct lnet_tx_queue *tq;
- cfs_list_t nilist;
int i;
- int rc = 0;
- int lnd_type;
- int nicount = 0;
- char *nets = lnet_get_networks();
-
- CFS_INIT_LIST_HEAD(&nilist);
-
- if (nets == NULL)
- goto failed;
-
- rc = lnet_parse_networks(&nilist, nets);
- if (rc != 0)
- goto failed;
-
- while (!cfs_list_empty(&nilist)) {
- ni = cfs_list_entry(nilist.next, lnet_ni_t, ni_list);
- lnd_type = LNET_NETTYP(LNET_NIDNET(ni->ni_nid));
-
- LASSERT (libcfs_isknown_lnd(lnd_type));
-
- if (lnd_type == CIBLND ||
- lnd_type == OPENIBLND ||
- lnd_type == IIBLND ||
- lnd_type == VIBLND) {
- CERROR("LND %s obsoleted\n",
- libcfs_lnd2str(lnd_type));
- goto failed;
- }
-
- LNET_MUTEX_LOCK(&the_lnet.ln_lnd_mutex);
- lnd = lnet_find_lnd_by_type(lnd_type);
-
-#ifdef __KERNEL__
- if (lnd == NULL) {
- LNET_MUTEX_UNLOCK(&the_lnet.ln_lnd_mutex);
- rc = cfs_request_module("%s",
- libcfs_lnd2modname(lnd_type));
- LNET_MUTEX_LOCK(&the_lnet.ln_lnd_mutex);
-
- lnd = lnet_find_lnd_by_type(lnd_type);
- if (lnd == NULL) {
- LNET_MUTEX_UNLOCK(&the_lnet.ln_lnd_mutex);
- CERROR("Can't load LND %s, module %s, rc=%d\n",
- libcfs_lnd2str(lnd_type),
- libcfs_lnd2modname(lnd_type), rc);
+ struct lnet_net *net = ni->ni_net;
+
+ mutex_lock(&the_lnet.ln_lnd_mutex);
+
+ if (tun) {
+ memcpy(&ni->ni_lnd_tunables, tun, sizeof(*tun));
+ ni->ni_lnd_tunables_set = true;
+ }
+
+ rc = (net->net_lnd->lnd_startup)(ni);
+
+ mutex_unlock(&the_lnet.ln_lnd_mutex);
+
+ if (rc != 0) {
+ LCONSOLE_ERROR_MSG(0x105, "Error %d starting up LNI %s\n",
+ rc, libcfs_lnd2str(net->net_lnd->lnd_type));
+ lnet_net_lock(LNET_LOCK_EX);
+ net->net_lnd->lnd_refcount--;
+ lnet_net_unlock(LNET_LOCK_EX);
+ goto failed0;
+ }
+
+ ni->ni_state = LNET_NI_STATE_ACTIVE;
+
+ /* We keep a reference on the loopback net through the loopback NI */
+ if (net->net_lnd->lnd_type == LOLND) {
+ lnet_ni_addref(ni);
+ LASSERT(the_lnet.ln_loni == NULL);
+ the_lnet.ln_loni = ni;
+ ni->ni_net->net_tunables.lct_peer_tx_credits = 0;
+ ni->ni_net->net_tunables.lct_peer_rtr_credits = 0;
+ ni->ni_net->net_tunables.lct_max_tx_credits = 0;
+ ni->ni_net->net_tunables.lct_peer_timeout = 0;
+ return 0;
+ }
+
+ if (ni->ni_net->net_tunables.lct_peer_tx_credits == 0 ||
+ ni->ni_net->net_tunables.lct_max_tx_credits == 0) {
+ LCONSOLE_ERROR_MSG(0x107, "LNI %s has no %scredits\n",
+ libcfs_lnd2str(net->net_lnd->lnd_type),
+ ni->ni_net->net_tunables.lct_peer_tx_credits == 0 ?
+ "" : "per-peer ");
+ /* shutdown the NI since if we get here then it must've already
+ * been started
+ */
+ lnet_shutdown_lndni(ni);
+ return -EINVAL;
+ }
+
+ cfs_percpt_for_each(tq, i, ni->ni_tx_queues) {
+ tq->tq_credits_min =
+ tq->tq_credits_max =
+ tq->tq_credits = lnet_ni_tq_credits(ni);
+ }
+
+ atomic_set(&ni->ni_tx_credits,
+ lnet_ni_tq_credits(ni) * ni->ni_ncpts);
+
+ CDEBUG(D_LNI, "Added LNI %s [%d/%d/%d/%d]\n",
+ libcfs_nid2str(ni->ni_nid),
+ ni->ni_net->net_tunables.lct_peer_tx_credits,
+ lnet_ni_tq_credits(ni) * LNET_CPT_NUMBER,
+ ni->ni_net->net_tunables.lct_peer_rtr_credits,
+ ni->ni_net->net_tunables.lct_peer_timeout);
+
+ return 0;
+failed0:
+ lnet_ni_free(ni);
+ return rc;
+}
+
+static int
+lnet_startup_lndnet(struct lnet_net *net, struct lnet_lnd_tunables *tun)
+{
+ struct lnet_ni *ni;
+ struct lnet_net *net_l = NULL;
+ struct list_head local_ni_list;
+ int rc;
+ int ni_count = 0;
+ __u32 lnd_type;
+ lnd_t *lnd;
+ int peer_timeout =
+ net->net_tunables.lct_peer_timeout;
+ int maxtxcredits =
+ net->net_tunables.lct_max_tx_credits;
+ int peerrtrcredits =
+ net->net_tunables.lct_peer_rtr_credits;
+
+ INIT_LIST_HEAD(&local_ni_list);
+
+ /*
+ * make sure that this net is unique. If it isn't then
+ * we are adding interfaces to an already existing network, and
+ * 'net' is just a convenient way to pass in the list.
+ * if it is unique we need to find the LND and load it if
+ * necessary.
+ */
+ if (lnet_net_unique(net->net_id, &the_lnet.ln_nets, &net_l)) {
+ lnd_type = LNET_NETTYP(net->net_id);
+
+ LASSERT(libcfs_isknown_lnd(lnd_type));
+
+ if (lnd_type == CIBLND || lnd_type == OPENIBLND ||
+ lnd_type == IIBLND || lnd_type == VIBLND) {
+ CERROR("LND %s obsoleted\n", libcfs_lnd2str(lnd_type));
+ rc = -EINVAL;
+ goto failed0;
+ }
+
+ mutex_lock(&the_lnet.ln_lnd_mutex);
+ lnd = lnet_find_lnd_by_type(lnd_type);
+
+ if (lnd == NULL) {
+ mutex_unlock(&the_lnet.ln_lnd_mutex);
+ rc = request_module("%s", libcfs_lnd2modname(lnd_type));
+ mutex_lock(&the_lnet.ln_lnd_mutex);
+
+ lnd = lnet_find_lnd_by_type(lnd_type);
+ if (lnd == NULL) {
+ mutex_unlock(&the_lnet.ln_lnd_mutex);
+ CERROR("Can't load LND %s, module %s, rc=%d\n",
+ libcfs_lnd2str(lnd_type),
+ libcfs_lnd2modname(lnd_type), rc);
#ifndef HAVE_MODULE_LOADING_SUPPORT
- LCONSOLE_ERROR_MSG(0x104, "Your kernel must be "
- "compiled with kernel module "
- "loading support.");
-#endif
- goto failed;
- }
- }
-#else
- if (lnd == NULL) {
- LNET_MUTEX_UNLOCK(&the_lnet.ln_lnd_mutex);
- CERROR("LND %s not supported\n",
- libcfs_lnd2str(lnd_type));
- goto failed;
- }
+ LCONSOLE_ERROR_MSG(0x104, "Your kernel must be "
+ "compiled with kernel module "
+ "loading support.");
#endif
+ rc = -EINVAL;
+ goto failed0;
+ }
+ }
+
+ lnet_net_lock(LNET_LOCK_EX);
+ lnd->lnd_refcount++;
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ net->net_lnd = lnd;
+
+ mutex_unlock(&the_lnet.ln_lnd_mutex);
+
+ net_l = net;
+ }
+
+ /*
+ * net_l: if the network being added is unique then net_l
+ * will point to that network
+ * if the network being added is not unique then
+ * net_l points to the existing network.
+ *
+ * When we enter the loop below, we'll pick NIs off he
+ * network beign added and start them up, then add them to
+ * a local ni list. Once we've successfully started all
+ * the NIs then we join the local NI list (of started up
+ * networks) with the net_l->net_ni_list, which should
+ * point to the correct network to add the new ni list to
+ *
+ * If any of the new NIs fail to start up, then we want to
+ * iterate through the local ni list, which should include
+ * any NIs which were successfully started up, and shut
+ * them down.
+ *
+ * After than we want to delete the network being added,
+ * to avoid a memory leak.
+ */
+
+ /*
+ * When a network uses TCP bonding then all its interfaces
+ * must be specified when the network is first defined: the
+ * TCP bonding code doesn't allow for interfaces to be added
+ * or removed.
+ */
+ if (net_l != net && net_l != NULL && use_tcp_bonding &&
+ LNET_NETTYP(net_l->net_id) == SOCKLND) {
+ rc = -EINVAL;
+ goto failed0;
+ }
+
+ while (!list_empty(&net->net_ni_added)) {
+ ni = list_entry(net->net_ni_added.next, struct lnet_ni,
+ ni_netlist);
+ list_del_init(&ni->ni_netlist);
+
+ /* make sure that the the NI we're about to start
+ * up is actually unique. if it's not fail. */
+ if (!lnet_ni_unique_net(&net_l->net_ni_list,
+ ni->ni_interfaces[0])) {
+ rc = -EINVAL;
+ goto failed1;
+ }
+
+ /* adjust the pointer the parent network, just in case it
+ * the net is a duplicate */
+ ni->ni_net = net_l;
+
+ rc = lnet_startup_lndni(ni, tun);
+
+ LASSERT(ni->ni_net->net_tunables.lct_peer_timeout <= 0 ||
+ ni->ni_net->net_lnd->lnd_query != NULL);
+
+ if (rc < 0)
+ goto failed1;
+
+ lnet_ni_addref(ni);
+ list_add_tail(&ni->ni_netlist, &local_ni_list);
+
+ ni_count++;
+ }
+
+ lnet_net_lock(LNET_LOCK_EX);
+ list_splice_tail(&local_ni_list, &net_l->net_ni_list);
+ lnet_incr_dlc_seq();
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ /* if the network is not unique then we don't want to keep
+ * it around after we're done. Free it. Otherwise add that
+ * net to the global the_lnet.ln_nets */
+ if (net_l != net && net_l != NULL) {
+ /*
+ * TODO - note. currently the tunables can not be updated
+ * once added
+ */
+ lnet_net_free(net);
+ } else {
+ net->net_state = LNET_NET_STATE_ACTIVE;
+ /*
+ * restore tunables after it has been overwitten by the
+ * lnd
+ */
+ if (peer_timeout != -1)
+ net->net_tunables.lct_peer_timeout = peer_timeout;
+ if (maxtxcredits != -1)
+ net->net_tunables.lct_max_tx_credits = maxtxcredits;
+ if (peerrtrcredits != -1)
+ net->net_tunables.lct_peer_rtr_credits = peerrtrcredits;
+
+ lnet_net_lock(LNET_LOCK_EX);
+ list_add_tail(&net->net_list, &the_lnet.ln_nets);
+ lnet_net_unlock(LNET_LOCK_EX);
+ }
+
+ return ni_count;
+
+failed1:
+ /*
+ * shutdown the new NIs that are being started up
+ * free the NET being started
+ */
+ while (!list_empty(&local_ni_list)) {
+ ni = list_entry(local_ni_list.next, struct lnet_ni,
+ ni_netlist);
+
+ lnet_shutdown_lndni(ni);
+ }
+
+failed0:
+ lnet_net_free(net);
+
+ return rc;
+}
+
+static int
+lnet_startup_lndnets(struct list_head *netlist)
+{
+ struct lnet_net *net;
+ int rc;
+ int ni_count = 0;
+
+ while (!list_empty(netlist)) {
+ net = list_entry(netlist->next, struct lnet_net, net_list);
+ list_del_init(&net->net_list);
+
+ rc = lnet_startup_lndnet(net, NULL);
+
+ if (rc < 0)
+ goto failed;
+
+ ni_count += rc;
+ }
+
+ return ni_count;
+failed:
+ lnet_shutdown_lndnets();
+
+ return rc;
+}
+
+/**
+ * Initialize LNet library.
+ *
+ * Automatically called at module loading time. Caller has to call
+ * lnet_lib_exit() after a call to lnet_lib_init(), if and only if the
+ * latter returned 0. It must be called exactly once.
+ *
+ * \retval 0 on success
+ * \retval -ve on failures.
+ */
+int lnet_lib_init(void)
+{
+ int rc;
+
+ lnet_assert_wire_constants();
+
+ memset(&the_lnet, 0, sizeof(the_lnet));
+
+ /* refer to global cfs_cpt_table for now */
+ the_lnet.ln_cpt_table = cfs_cpt_table;
+ the_lnet.ln_cpt_number = cfs_cpt_number(cfs_cpt_table);
+
+ LASSERT(the_lnet.ln_cpt_number > 0);
+ if (the_lnet.ln_cpt_number > LNET_CPT_MAX) {
+ /* we are under risk of consuming all lh_cookie */
+ CERROR("Can't have %d CPTs for LNet (max allowed is %d), "
+ "please change setting of CPT-table and retry\n",
+ the_lnet.ln_cpt_number, LNET_CPT_MAX);
+ return -E2BIG;
+ }
+
+ while ((1 << the_lnet.ln_cpt_bits) < the_lnet.ln_cpt_number)
+ the_lnet.ln_cpt_bits++;
+
+ rc = lnet_create_locks();
+ if (rc != 0) {
+ CERROR("Can't create LNet global locks: %d\n", rc);
+ return rc;
+ }
+
+ the_lnet.ln_refcount = 0;
+ LNetInvalidateHandle(&the_lnet.ln_rc_eqh);
+ INIT_LIST_HEAD(&the_lnet.ln_lnds);
+ INIT_LIST_HEAD(&the_lnet.ln_net_zombie);
+ INIT_LIST_HEAD(&the_lnet.ln_rcd_zombie);
+ INIT_LIST_HEAD(&the_lnet.ln_rcd_deathrow);
+
+ /* The hash table size is the number of bits it takes to express the set
+ * ln_num_routes, minus 1 (better to under estimate than over so we
+ * don't waste memory). */
+ if (rnet_htable_size <= 0)
+ rnet_htable_size = LNET_REMOTE_NETS_HASH_DEFAULT;
+ else if (rnet_htable_size > LNET_REMOTE_NETS_HASH_MAX)
+ rnet_htable_size = LNET_REMOTE_NETS_HASH_MAX;
+ the_lnet.ln_remote_nets_hbits = max_t(int, 1,
+ order_base_2(rnet_htable_size) - 1);
+
+ /* All LNDs apart from the LOLND are in separate modules. They
+ * register themselves when their module loads, and unregister
+ * themselves when their module is unloaded. */
+ lnet_register_lnd(&the_lolnd);
+ return 0;
+}
+
+/**
+ * Finalize LNet library.
+ *
+ * \pre lnet_lib_init() called with success.
+ * \pre All LNet users called LNetNIFini() for matching LNetNIInit() calls.
+ */
+void lnet_lib_exit(void)
+{
+ LASSERT(the_lnet.ln_refcount == 0);
+
+ while (!list_empty(&the_lnet.ln_lnds))
+ lnet_unregister_lnd(list_entry(the_lnet.ln_lnds.next,
+ lnd_t, lnd_list));
+ lnet_destroy_locks();
+}
+
+/**
+ * Set LNet PID and start LNet interfaces, routing, and forwarding.
+ *
+ * Users must call this function at least once before any other functions.
+ * For each successful call there must be a corresponding call to
+ * LNetNIFini(). For subsequent calls to LNetNIInit(), \a requested_pid is
+ * ignored.
+ *
+ * The PID used by LNet may be different from the one requested.
+ * See LNetGetId().
+ *
+ * \param requested_pid PID requested by the caller.
+ *
+ * \return >= 0 on success, and < 0 error code on failures.
+ */
+int
+LNetNIInit(lnet_pid_t requested_pid)
+{
+ int im_a_router = 0;
+ int rc;
+ int ni_count;
+ struct lnet_ping_info *pinfo;
+ lnet_handle_md_t md_handle;
+ struct list_head net_head;
+ struct lnet_net *net;
+
+ INIT_LIST_HEAD(&net_head);
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+
+ CDEBUG(D_OTHER, "refs %d\n", the_lnet.ln_refcount);
+
+ if (the_lnet.ln_refcount > 0) {
+ rc = the_lnet.ln_refcount++;
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+ }
+
+ rc = lnet_prepare(requested_pid);
+ if (rc != 0) {
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+ }
+
+ /* create a network for Loopback network */
+ net = lnet_net_alloc(LNET_MKNET(LOLND, 0), &net_head);
+ if (net == NULL) {
+ rc = -ENOMEM;
+ goto err_empty_list;
+ }
+
+ /* Add in the loopback NI */
+ if (lnet_ni_alloc(net, NULL, NULL) == NULL) {
+ rc = -ENOMEM;
+ goto err_empty_list;
+ }
+
+ /* If LNet is being initialized via DLC it is possible
+ * that the user requests not to load module parameters (ones which
+ * are supported by DLC) on initialization. Therefore, make sure not
+ * to load networks, routes and forwarding from module parameters
+ * in this case. On cleanup in case of failure only clean up
+ * routes if it has been loaded */
+ if (!the_lnet.ln_nis_from_mod_params) {
+ rc = lnet_parse_networks(&net_head, lnet_get_networks(),
+ use_tcp_bonding);
+ if (rc < 0)
+ goto err_empty_list;
+ }
+
+ ni_count = lnet_startup_lndnets(&net_head);
+ if (ni_count < 0) {
+ rc = ni_count;
+ goto err_empty_list;
+ }
+
+ if (!the_lnet.ln_nis_from_mod_params) {
+ rc = lnet_parse_routes(lnet_get_routes(), &im_a_router);
+ if (rc != 0)
+ goto err_shutdown_lndnis;
+
+ rc = lnet_check_routes();
+ if (rc != 0)
+ goto err_destroy_routes;
+
+ rc = lnet_rtrpools_alloc(im_a_router);
+ if (rc != 0)
+ goto err_destroy_routes;
+ }
+
+ rc = lnet_acceptor_start();
+ if (rc != 0)
+ goto err_destroy_routes;
+
+ the_lnet.ln_refcount = 1;
+ /* Now I may use my own API functions... */
+
+ rc = lnet_ping_info_setup(&pinfo, &md_handle, ni_count, true);
+ if (rc != 0)
+ goto err_acceptor_stop;
+
+ lnet_ping_target_update(pinfo, md_handle);
+
+ rc = lnet_router_checker_start();
+ if (rc != 0)
+ goto err_stop_ping;
+
+ lnet_fault_init();
+ lnet_proc_init();
+
+ mutex_unlock(&the_lnet.ln_api_mutex);
+
+ return 0;
+
+err_stop_ping:
+ lnet_ping_target_fini();
+err_acceptor_stop:
+ the_lnet.ln_refcount = 0;
+ lnet_acceptor_stop();
+err_destroy_routes:
+ if (!the_lnet.ln_nis_from_mod_params)
+ lnet_destroy_routes();
+err_shutdown_lndnis:
+ lnet_shutdown_lndnets();
+err_empty_list:
+ lnet_unprepare();
+ LASSERT(rc < 0);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ while (!list_empty(&net_head)) {
+ struct lnet_net *net;
+
+ net = list_entry(net_head.next, struct lnet_net, net_list);
+ list_del_init(&net->net_list);
+ lnet_net_free(net);
+ }
+ return rc;
+}
+EXPORT_SYMBOL(LNetNIInit);
+
+/**
+ * Stop LNet interfaces, routing, and forwarding.
+ *
+ * Users must call this function once for each successful call to LNetNIInit().
+ * Once the LNetNIFini() operation has been started, the results of pending
+ * API operations are undefined.
+ *
+ * \return always 0 for current implementation.
+ */
+int
+LNetNIFini()
+{
+ mutex_lock(&the_lnet.ln_api_mutex);
+
+ LASSERT(the_lnet.ln_refcount > 0);
+
+ if (the_lnet.ln_refcount != 1) {
+ the_lnet.ln_refcount--;
+ } else {
+ LASSERT(!the_lnet.ln_niinit_self);
+
+ lnet_fault_fini();
+
+ lnet_proc_fini();
+ lnet_router_checker_stop();
+ lnet_ping_target_fini();
+
+ /* Teardown fns that use my own API functions BEFORE here */
+ the_lnet.ln_refcount = 0;
+
+ lnet_acceptor_stop();
+ lnet_destroy_routes();
+ lnet_shutdown_lndnets();
+ lnet_unprepare();
+ }
+
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return 0;
+}
+EXPORT_SYMBOL(LNetNIFini);
+
+
+static int lnet_handle_dbg_task(struct lnet_ioctl_dbg *dbg,
+ struct lnet_dbg_task_info *dbg_info)
+{
+ switch (dbg->dbg_task) {
+ case LNET_DBG_INCR_DLC_SEQ:
+ lnet_incr_dlc_seq();
+ }
+
+ return 0;
+}
+/**
+ * Grabs the ni data from the ni structure and fills the out
+ * parameters
+ *
+ * \param[in] ni network interface structure
+ * \param[out] cfg_ni NI config information
+ * \param[out] tun network and LND tunables
+ */
+static void
+lnet_fill_ni_info(struct lnet_ni *ni, struct lnet_ioctl_config_ni *cfg_ni,
+ struct lnet_ioctl_config_lnd_tunables *tun,
+ struct lnet_ioctl_element_stats *stats,
+ __u32 tun_size)
+{
+ size_t min_size = 0;
+ int i;
+
+ if (!ni || !cfg_ni || !tun)
+ return;
+
+ if (ni->ni_interfaces[0] != NULL) {
+ for (i = 0; i < ARRAY_SIZE(ni->ni_interfaces); i++) {
+ if (ni->ni_interfaces[i] != NULL) {
+ strncpy(cfg_ni->lic_ni_intf[i],
+ ni->ni_interfaces[i],
+ sizeof(cfg_ni->lic_ni_intf[i]));
+ }
+ }
+ }
+
+ cfg_ni->lic_nid = ni->ni_nid;
+ cfg_ni->lic_status = ni->ni_status->ns_status;
+ cfg_ni->lic_tcp_bonding = use_tcp_bonding;
+ cfg_ni->lic_dev_cpt = ni->dev_cpt;
+
+ memcpy(&tun->lt_cmn, &ni->ni_net->net_tunables, sizeof(tun->lt_cmn));
+
+ if (stats) {
+ stats->send_count = atomic_read(&ni->ni_stats.send_count);
+ stats->recv_count = atomic_read(&ni->ni_stats.recv_count);
+ }
+
+ /*
+ * tun->lt_tun will always be present, but in order to be
+ * backwards compatible, we need to deal with the cases when
+ * tun->lt_tun is smaller than what the kernel has, because it
+ * comes from an older version of a userspace program, then we'll
+ * need to copy as much information as we have available space.
+ */
+ min_size = tun_size - sizeof(tun->lt_cmn);
+ memcpy(&tun->lt_tun, &ni->ni_lnd_tunables, min_size);
+
+ /* copy over the cpts */
+ if (ni->ni_ncpts == LNET_CPT_NUMBER &&
+ ni->ni_cpts == NULL) {
+ for (i = 0; i < ni->ni_ncpts; i++)
+ cfg_ni->lic_cpts[i] = i;
+ } else {
+ for (i = 0;
+ ni->ni_cpts != NULL && i < ni->ni_ncpts &&
+ i < LNET_MAX_SHOW_NUM_CPT;
+ i++)
+ cfg_ni->lic_cpts[i] = ni->ni_cpts[i];
+ }
+ cfg_ni->lic_ncpts = ni->ni_ncpts;
+}
+
+/**
+ * NOTE: This is a legacy function left in the code to be backwards
+ * compatible with older userspace programs. It should eventually be
+ * removed.
+ *
+ * Grabs the ni data from the ni structure and fills the out
+ * parameters
+ *
+ * \param[in] ni network interface structure
+ * \param[out] config config information
+ */
+static void
+lnet_fill_ni_info_legacy(struct lnet_ni *ni,
+ struct lnet_ioctl_config_data *config)
+{
+ struct lnet_ioctl_net_config *net_config;
+ struct lnet_ioctl_config_lnd_tunables *lnd_cfg = NULL;
+ size_t min_size, tunable_size = 0;
+ int i;
+
+ if (!ni || !config)
+ return;
+
+ net_config = (struct lnet_ioctl_net_config *) config->cfg_bulk;
+ if (!net_config)
+ return;
+
+ BUILD_BUG_ON(ARRAY_SIZE(ni->ni_interfaces) !=
+ ARRAY_SIZE(net_config->ni_interfaces));
+
+ for (i = 0; i < ARRAY_SIZE(ni->ni_interfaces); i++) {
+ if (!ni->ni_interfaces[i])
+ break;
+
+ strncpy(net_config->ni_interfaces[i],
+ ni->ni_interfaces[i],
+ sizeof(net_config->ni_interfaces[i]));
+ }
+
+ config->cfg_nid = ni->ni_nid;
+ config->cfg_config_u.cfg_net.net_peer_timeout =
+ ni->ni_net->net_tunables.lct_peer_timeout;
+ config->cfg_config_u.cfg_net.net_max_tx_credits =
+ ni->ni_net->net_tunables.lct_max_tx_credits;
+ config->cfg_config_u.cfg_net.net_peer_tx_credits =
+ ni->ni_net->net_tunables.lct_peer_tx_credits;
+ config->cfg_config_u.cfg_net.net_peer_rtr_credits =
+ ni->ni_net->net_tunables.lct_peer_rtr_credits;
+
+ net_config->ni_status = ni->ni_status->ns_status;
+
+ if (ni->ni_cpts) {
+ int num_cpts = min(ni->ni_ncpts, LNET_MAX_SHOW_NUM_CPT);
+
+ for (i = 0; i < num_cpts; i++)
+ net_config->ni_cpts[i] = ni->ni_cpts[i];
+
+ config->cfg_ncpts = num_cpts;
+ }
+
+ /*
+ * See if user land tools sent in a newer and larger version
+ * of struct lnet_tunables than what the kernel uses.
+ */
+ min_size = sizeof(*config) + sizeof(*net_config);
+
+ if (config->cfg_hdr.ioc_len > min_size)
+ tunable_size = config->cfg_hdr.ioc_len - min_size;
+
+ /* Don't copy too much data to user space */
+ min_size = min(tunable_size, sizeof(ni->ni_lnd_tunables));
+ lnd_cfg = (struct lnet_ioctl_config_lnd_tunables *)net_config->cfg_bulk;
+
+ if (lnd_cfg && min_size) {
+ memcpy(&lnd_cfg->lt_tun, &ni->ni_lnd_tunables, min_size);
+ config->cfg_config_u.cfg_net.net_interface_count = 1;
+
+ /* Tell user land that kernel side has less data */
+ if (tunable_size > sizeof(ni->ni_lnd_tunables)) {
+ min_size = tunable_size - sizeof(ni->ni_lnd_tunables);
+ config->cfg_hdr.ioc_len -= min_size;
+ }
+ }
+}
+
+struct lnet_ni *
+lnet_get_ni_idx_locked(int idx)
+{
+ struct lnet_ni *ni;
+ struct lnet_net *net;
+
+ list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
+ list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
+ if (idx-- == 0)
+ return ni;
+ }
+ }
+
+ return NULL;
+}
+
+struct lnet_ni *
+lnet_get_next_ni_locked(struct lnet_net *mynet, struct lnet_ni *prev)
+{
+ struct lnet_ni *ni;
+ struct lnet_net *net = mynet;
+
+ if (prev == NULL) {
+ if (net == NULL)
+ net = list_entry(the_lnet.ln_nets.next, struct lnet_net,
+ net_list);
+ ni = list_entry(net->net_ni_list.next, struct lnet_ni,
+ ni_netlist);
+
+ return ni;
+ }
+
+ if (prev->ni_netlist.next == &prev->ni_net->net_ni_list) {
+ /* if you reached the end of the ni list and the net is
+ * specified, then there are no more nis in that net */
+ if (net != NULL)
+ return NULL;
+
+ /* we reached the end of this net ni list. move to the
+ * next net */
+ if (prev->ni_net->net_list.next == &the_lnet.ln_nets)
+ /* no more nets and no more NIs. */
+ return NULL;
+
+ /* get the next net */
+ net = list_entry(prev->ni_net->net_list.next, struct lnet_net,
+ net_list);
+ /* get the ni on it */
+ ni = list_entry(net->net_ni_list.next, struct lnet_ni,
+ ni_netlist);
+
+ return ni;
+ }
+
+ /* there are more nis left */
+ ni = list_entry(prev->ni_netlist.next, struct lnet_ni, ni_netlist);
+
+ return ni;
+}
+
+int
+lnet_get_net_config(struct lnet_ioctl_config_data *config)
+{
+ struct lnet_ni *ni;
+ int cpt;
+ int rc = -ENOENT;
+ int idx = config->cfg_count;
+
+ cpt = lnet_net_lock_current();
+
+ ni = lnet_get_ni_idx_locked(idx);
+
+ if (ni != NULL) {
+ rc = 0;
+ lnet_ni_lock(ni);
+ lnet_fill_ni_info_legacy(ni, config);
+ lnet_ni_unlock(ni);
+ }
+
+ lnet_net_unlock(cpt);
+ return rc;
+}
+
+int
+lnet_get_ni_config(struct lnet_ioctl_config_ni *cfg_ni,
+ struct lnet_ioctl_config_lnd_tunables *tun,
+ struct lnet_ioctl_element_stats *stats,
+ __u32 tun_size)
+{
+ struct lnet_ni *ni;
+ int cpt;
+ int rc = -ENOENT;
+
+ if (!cfg_ni || !tun || !stats)
+ return -EINVAL;
+
+ cpt = lnet_net_lock_current();
+
+ ni = lnet_get_ni_idx_locked(cfg_ni->lic_idx);
+
+ if (ni) {
+ rc = 0;
+ lnet_ni_lock(ni);
+ lnet_fill_ni_info(ni, cfg_ni, tun, stats, tun_size);
+ lnet_ni_unlock(ni);
+ }
+
+ lnet_net_unlock(cpt);
+ return rc;
+}
+
+static int lnet_add_net_common(struct lnet_net *net,
+ struct lnet_ioctl_config_lnd_tunables *tun)
+{
+ struct lnet_net *netl = NULL;
+ __u32 net_id;
+ lnet_ping_info_t *pinfo;
+ lnet_handle_md_t md_handle;
+ int rc;
+ lnet_remotenet_t *rnet;
+ int net_ni_count;
+ int num_acceptor_nets;
+
+ lnet_net_lock(LNET_LOCK_EX);
+ rnet = lnet_find_rnet_locked(net->net_id);
+ lnet_net_unlock(LNET_LOCK_EX);
+ /*
+ * make sure that the net added doesn't invalidate the current
+ * configuration LNet is keeping
+ */
+ if (rnet) {
+ CERROR("Adding net %s will invalidate routing configuration\n",
+ libcfs_net2str(net->net_id));
+ rc = -EUSERS;
+ goto failed1;
+ }
+
+ /*
+ * make sure you calculate the correct number of slots in the ping
+ * info. Since the ping info is a flattened list of all the NIs,
+ * we should allocate enough slots to accomodate the number of NIs
+ * which will be added.
+ *
+ * since ni hasn't been configured yet, use
+ * lnet_get_net_ni_count_pre() which checks the net_ni_added list
+ */
+ net_ni_count = lnet_get_net_ni_count_pre(net);
+
+ rc = lnet_ping_info_setup(&pinfo, &md_handle,
+ net_ni_count + lnet_get_ni_count(),
+ false);
+ if (rc < 0)
+ goto failed1;
+
+ if (tun)
+ memcpy(&net->net_tunables,
+ &tun->lt_cmn, sizeof(net->net_tunables));
+ else
+ memset(&net->net_tunables, -1, sizeof(net->net_tunables));
+
+ /*
+ * before starting this network get a count of the current TCP
+ * networks which require the acceptor thread running. If that
+ * count is == 0 before we start up this network, then we'd want to
+ * start up the acceptor thread after starting up this network
+ */
+ num_acceptor_nets = lnet_count_acceptor_nets();
+
+ net_id = net->net_id;
+
+ rc = lnet_startup_lndnet(net,
+ (tun) ? &tun->lt_tun : NULL);
+ if (rc < 0)
+ goto failed;
+
+ lnet_net_lock(LNET_LOCK_EX);
+ netl = lnet_get_net_locked(net_id);
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ LASSERT(netl);
+
+ /*
+ * Start the acceptor thread if this is the first network
+ * being added that requires the thread.
+ */
+ if (netl->net_lnd->lnd_accept &&
+ num_acceptor_nets == 0)
+ {
+ rc = lnet_acceptor_start();
+ if (rc < 0) {
+ /* shutdown the net that we just started */
+ CERROR("Failed to start up acceptor thread\n");
+ lnet_shutdown_lndnet(net);
+ goto failed;
+ }
+ }
+
+ lnet_net_lock(LNET_LOCK_EX);
+ lnet_peer_net_added(netl);
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ lnet_ping_target_update(pinfo, md_handle);
+
+ return 0;
+
+failed:
+ lnet_ping_md_unlink(pinfo, &md_handle);
+ lnet_ping_info_free(pinfo);
+failed1:
+ lnet_net_free(net);
+ return rc;
+}
+
+static int lnet_handle_legacy_ip2nets(char *ip2nets,
+ struct lnet_ioctl_config_lnd_tunables *tun)
+{
+ struct lnet_net *net;
+ char *nets;
+ int rc;
+ struct list_head net_head;
+
+ INIT_LIST_HEAD(&net_head);
+
+ rc = lnet_parse_ip2nets(&nets, ip2nets);
+ if (rc < 0)
+ return rc;
+
+ rc = lnet_parse_networks(&net_head, nets, use_tcp_bonding);
+ if (rc < 0)
+ return rc;
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+ while (!list_empty(&net_head)) {
+ net = list_entry(net_head.next, struct lnet_net, net_list);
+ list_del_init(&net->net_list);
+ rc = lnet_add_net_common(net, tun);
+ if (rc < 0)
+ goto out;
+ }
+
+out:
+ mutex_unlock(&the_lnet.ln_api_mutex);
+
+ while (!list_empty(&net_head)) {
+ net = list_entry(net_head.next, struct lnet_net, net_list);
+ list_del_init(&net->net_list);
+ lnet_net_free(net);
+ }
+ return rc;
+}
+
+int lnet_dyn_add_ni(struct lnet_ioctl_config_ni *conf)
+{
+ struct lnet_net *net;
+ struct lnet_ni *ni;
+ struct lnet_ioctl_config_lnd_tunables *tun = NULL;
+ int rc;
+ __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;
+
+ /* handle legacy ip2nets from DLC */
+ if (conf->lic_legacy_ip2nets[0] != '\0')
+ return lnet_handle_legacy_ip2nets(conf->lic_legacy_ip2nets,
+ tun);
+
+ net_id = LNET_NIDNET(conf->lic_nid);
+
+ net = lnet_net_alloc(net_id, NULL);
+ if (!net)
+ return -ENOMEM;
+
+ ni = lnet_ni_alloc_w_cpt_array(net, conf->lic_cpts, conf->lic_ncpts,
+ conf->lic_ni_intf[0]);
+ if (!ni)
+ return -ENOMEM;
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+
+ rc = lnet_add_net_common(net, tun);
+
+ mutex_unlock(&the_lnet.ln_api_mutex);
+
+ return rc;
+}
+
+int lnet_dyn_del_ni(struct lnet_ioctl_config_ni *conf)
+{
+ struct lnet_net *net;
+ struct lnet_ni *ni;
+ __u32 net_id = LNET_NIDNET(conf->lic_nid);
+ lnet_ping_info_t *pinfo;
+ lnet_handle_md_t md_handle;
+ int rc;
+ int net_count;
+ __u32 addr;
+
+ /* don't allow userspace to shutdown the LOLND */
+ if (LNET_NETTYP(net_id) == LOLND)
+ return -EINVAL;
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+
+ lnet_net_lock(0);
+
+ net = lnet_get_net_locked(net_id);
+ if (!net) {
+ CERROR("net %s not found\n",
+ libcfs_net2str(net_id));
+ rc = -ENOENT;
+ goto net_unlock;
+ }
+
+ addr = LNET_NIDADDR(conf->lic_nid);
+ if (addr == 0) {
+ /* remove the entire net */
+ net_count = lnet_get_net_ni_count_locked(net);
+
+ lnet_net_unlock(0);
+
+ /* create and link a new ping info, before removing the old one */
+ rc = lnet_ping_info_setup(&pinfo, &md_handle,
+ lnet_get_ni_count() - net_count,
+ false);
+ if (rc != 0)
+ goto out;
+
+ lnet_shutdown_lndnet(net);
+
+ if (lnet_count_acceptor_nets() == 0)
+ lnet_acceptor_stop();
+
+ lnet_ping_target_update(pinfo, md_handle);
+
+ goto out;
+ }
+
+ ni = lnet_nid2ni_locked(conf->lic_nid, 0);
+ if (!ni) {
+ CERROR("nid %s not found \n",
+ libcfs_nid2str(conf->lic_nid));
+ rc = -ENOENT;
+ goto net_unlock;
+ }
- lnet_net_lock(LNET_LOCK_EX);
- lnd->lnd_refcount++;
- lnet_net_unlock(LNET_LOCK_EX);
+ net_count = lnet_get_net_ni_count_locked(net);
- ni->ni_lnd = lnd;
+ lnet_net_unlock(0);
- rc = (lnd->lnd_startup)(ni);
+ /* create and link a new ping info, before removing the old one */
+ rc = lnet_ping_info_setup(&pinfo, &md_handle,
+ lnet_get_ni_count() - 1, false);
+ if (rc != 0)
+ goto out;
- LNET_MUTEX_UNLOCK(&the_lnet.ln_lnd_mutex);
+ lnet_shutdown_lndni(ni);
- if (rc != 0) {
- LCONSOLE_ERROR_MSG(0x105, "Error %d starting up LNI %s"
- "\n",
- rc, libcfs_lnd2str(lnd->lnd_type));
- lnet_net_lock(LNET_LOCK_EX);
- lnd->lnd_refcount--;
- lnet_net_unlock(LNET_LOCK_EX);
- goto failed;
- }
+ if (lnet_count_acceptor_nets() == 0)
+ lnet_acceptor_stop();
- LASSERT (ni->ni_peertimeout <= 0 || lnd->lnd_query != NULL);
+ lnet_ping_target_update(pinfo, md_handle);
- cfs_list_del(&ni->ni_list);
+ /* check if the net is empty and remove it if it is */
+ if (net_count == 1)
+ lnet_shutdown_lndnet(net);
- lnet_net_lock(LNET_LOCK_EX);
- /* refcount for ln_nis */
- lnet_ni_addref_locked(ni, 0);
- cfs_list_add_tail(&ni->ni_list, &the_lnet.ln_nis);
- if (ni->ni_cpts != NULL) {
- cfs_list_add_tail(&ni->ni_cptlist,
- &the_lnet.ln_nis_cpt);
- lnet_ni_addref_locked(ni, 0);
- }
+ goto out;
- lnet_net_unlock(LNET_LOCK_EX);
+net_unlock:
+ lnet_net_unlock(0);
+out:
+ mutex_unlock(&the_lnet.ln_api_mutex);
- if (lnd->lnd_type == LOLND) {
- lnet_ni_addref(ni);
- LASSERT (the_lnet.ln_loni == NULL);
- the_lnet.ln_loni = ni;
- continue;
- }
-
-#ifndef __KERNEL__
- if (lnd->lnd_wait != NULL) {
- if (the_lnet.ln_eq_waitni == NULL) {
- lnet_ni_addref(ni);
- the_lnet.ln_eq_waitni = ni;
- }
- } else {
-# ifndef HAVE_LIBPTHREAD
- LCONSOLE_ERROR_MSG(0x106, "LND %s not supported in a "
- "single-threaded runtime\n",
- libcfs_lnd2str(lnd_type));
- goto failed;
-# endif
- }
-#endif
- if (ni->ni_peertxcredits == 0 ||
- ni->ni_maxtxcredits == 0) {
- LCONSOLE_ERROR_MSG(0x107, "LNI %s has no %scredits\n",
- libcfs_lnd2str(lnd->lnd_type),
- ni->ni_peertxcredits == 0 ?
- "" : "per-peer ");
- goto failed;
- }
-
- cfs_percpt_for_each(tq, i, ni->ni_tx_queues) {
- tq->tq_credits_min =
- tq->tq_credits_max =
- tq->tq_credits = lnet_ni_tq_credits(ni);
- }
+ return rc;
+}
+
+/*
+ * lnet_dyn_add_net and lnet_dyn_del_net are now deprecated.
+ * They are only expected to be called for unique networks.
+ * That can be as a result of older DLC library
+ * calls. Multi-Rail DLC and beyond no longer uses these APIs.
+ */
+int
+lnet_dyn_add_net(struct lnet_ioctl_config_data *conf)
+{
+ struct lnet_net *net;
+ struct list_head net_head;
+ int rc;
+ struct lnet_ioctl_config_lnd_tunables tun;
+ char *nets = conf->cfg_config_u.cfg_net.net_intf;
+
+ INIT_LIST_HEAD(&net_head);
- CDEBUG(D_LNI, "Added LNI %s [%d/%d/%d/%d]\n",
- libcfs_nid2str(ni->ni_nid), ni->ni_peertxcredits,
- lnet_ni_tq_credits(ni) * LNET_CPT_NUMBER,
- ni->ni_peerrtrcredits, ni->ni_peertimeout);
+ /* Create a net/ni structures for the network string */
+ rc = lnet_parse_networks(&net_head, nets, use_tcp_bonding);
+ if (rc <= 0)
+ return rc == 0 ? -EINVAL : rc;
- nicount++;
+ mutex_lock(&the_lnet.ln_api_mutex);
+
+ if (rc > 1) {
+ rc = -EINVAL; /* only add one network per call */
+ goto failed;
}
- if (the_lnet.ln_eq_waitni != NULL && nicount > 1) {
- lnd_type = the_lnet.ln_eq_waitni->ni_lnd->lnd_type;
- LCONSOLE_ERROR_MSG(0x109, "LND %s can only run single-network"
- "\n",
- libcfs_lnd2str(lnd_type));
- goto failed;
- }
+ net = list_entry(net_head.next, struct lnet_net, net_list);
+ list_del_init(&net->net_list);
- return 0;
+ LASSERT(lnet_net_unique(net->net_id, &the_lnet.ln_nets, NULL));
- failed:
- lnet_shutdown_lndnis();
+ memset(&tun, sizeof(tun), 0);
- while (!cfs_list_empty(&nilist)) {
- ni = cfs_list_entry(nilist.next, lnet_ni_t, ni_list);
- cfs_list_del(&ni->ni_list);
- lnet_ni_free(ni);
- }
+ tun.lt_cmn.lct_peer_timeout =
+ conf->cfg_config_u.cfg_net.net_peer_timeout;
+ tun.lt_cmn.lct_peer_tx_credits =
+ conf->cfg_config_u.cfg_net.net_peer_tx_credits;
+ tun.lt_cmn.lct_peer_rtr_credits =
+ conf->cfg_config_u.cfg_net.net_peer_rtr_credits;
+ tun.lt_cmn.lct_max_tx_credits =
+ conf->cfg_config_u.cfg_net.net_max_tx_credits;
+
+ rc = lnet_add_net_common(net, &tun);
+ if (rc != 0)
+ goto failed;
+
+ return 0;
- return -ENETDOWN;
+failed:
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ while (!list_empty(&net_head)) {
+ net = list_entry(net_head.next, struct lnet_net, net_list);
+ list_del_init(&net->net_list);
+ lnet_net_free(net);
+ }
+ return rc;
}
-/**
- * Initialize LNet library.
- *
- * Only userspace program needs to call this function - it's automatically
- * called in the kernel at module loading time. Caller has to call LNetFini()
- * after a call to LNetInit(), if and only if the latter returned 0. It must
- * be called exactly once.
- *
- * \return 0 on success, and -ve on failures.
- */
int
-LNetInit(void)
+lnet_dyn_del_net(__u32 net_id)
{
- int rc;
+ struct lnet_net *net;
+ struct lnet_ping_info *pinfo;
+ lnet_handle_md_t md_handle;
+ int rc;
+ int net_ni_count;
- lnet_assert_wire_constants();
- LASSERT(!the_lnet.ln_init);
+ /* don't allow userspace to shutdown the LOLND */
+ if (LNET_NETTYP(net_id) == LOLND)
+ return -EINVAL;
- memset(&the_lnet, 0, sizeof(the_lnet));
+ mutex_lock(&the_lnet.ln_api_mutex);
- /* refer to global cfs_cpt_table for now */
- the_lnet.ln_cpt_table = cfs_cpt_table;
- the_lnet.ln_cpt_number = cfs_cpt_number(cfs_cpt_table);
+ lnet_net_lock(0);
- LASSERT(the_lnet.ln_cpt_number > 0);
- if (the_lnet.ln_cpt_number > LNET_CPT_MAX) {
- /* we are under risk of consuming all lh_cookie */
- CERROR("Can't have %d CPTs for LNet (max allowed is %d), "
- "please change setting of CPT-table and retry\n",
- the_lnet.ln_cpt_number, LNET_CPT_MAX);
- return -1;
+ net = lnet_get_net_locked(net_id);
+ if (net == NULL) {
+ rc = -EINVAL;
+ goto out;
}
- while ((1 << the_lnet.ln_cpt_bits) < the_lnet.ln_cpt_number)
- the_lnet.ln_cpt_bits++;
+ net_ni_count = lnet_get_net_ni_count_locked(net);
- rc = lnet_create_locks();
- if (rc != 0) {
- CERROR("Can't create LNet global locks: %d\n", rc);
- return -1;
- }
+ lnet_net_unlock(0);
- the_lnet.ln_refcount = 0;
- the_lnet.ln_init = 1;
- LNetInvalidateHandle(&the_lnet.ln_rc_eqh);
- CFS_INIT_LIST_HEAD(&the_lnet.ln_lnds);
- CFS_INIT_LIST_HEAD(&the_lnet.ln_rcd_zombie);
- CFS_INIT_LIST_HEAD(&the_lnet.ln_rcd_deathrow);
+ /* create and link a new ping info, before removing the old one */
+ rc = lnet_ping_info_setup(&pinfo, &md_handle,
+ lnet_get_ni_count() - net_ni_count, false);
+ if (rc != 0)
+ goto out;
-#ifdef __KERNEL__
- /* The hash table size is the number of bits it takes to express the set
- * ln_num_routes, minus 1 (better to under estimate than over so we
- * don't waste memory). */
- if (rnet_htable_size <= 0)
- rnet_htable_size = LNET_REMOTE_NETS_HASH_DEFAULT;
- else if (rnet_htable_size > LNET_REMOTE_NETS_HASH_MAX)
- rnet_htable_size = LNET_REMOTE_NETS_HASH_MAX;
- the_lnet.ln_remote_nets_hbits = max_t(int, 1,
- order_base_2(rnet_htable_size) - 1);
+ lnet_shutdown_lndnet(net);
- /* All LNDs apart from the LOLND are in separate modules. They
- * register themselves when their module loads, and unregister
- * themselves when their module is unloaded. */
-#else
- the_lnet.ln_remote_nets_hbits = 8;
-
- /* Register LNDs
- * NB the order here determines default 'networks=' order */
-# ifdef HAVE_LIBPTHREAD
- LNET_REGISTER_ULND(the_tcplnd);
-# endif
-#endif
- lnet_register_lnd(&the_lolnd);
- return 0;
+ if (lnet_count_acceptor_nets() == 0)
+ lnet_acceptor_stop();
+
+ lnet_ping_target_update(pinfo, md_handle);
+
+out:
+ mutex_unlock(&the_lnet.ln_api_mutex);
+
+ return rc;
}
-EXPORT_SYMBOL(LNetInit);
-/**
- * Finalize LNet library.
- *
- * Only userspace program needs to call this function. It can be called
- * at most once.
- *
- * \pre LNetInit() called with success.
- * \pre All LNet users called LNetNIFini() for matching LNetNIInit() calls.
- */
-void
-LNetFini(void)
+void lnet_incr_dlc_seq(void)
{
- LASSERT(the_lnet.ln_init);
- LASSERT(the_lnet.ln_refcount == 0);
-
- while (!cfs_list_empty(&the_lnet.ln_lnds))
- lnet_unregister_lnd(cfs_list_entry(the_lnet.ln_lnds.next,
- lnd_t, lnd_list));
- lnet_destroy_locks();
+ atomic_inc(&lnet_dlc_seq_no);
+}
- the_lnet.ln_init = 0;
+__u32 lnet_get_dlc_seq_locked(void)
+{
+ return atomic_read(&lnet_dlc_seq_no);
}
-EXPORT_SYMBOL(LNetFini);
-/**
- * Set LNet PID and start LNet interfaces, routing, and forwarding.
- *
- * Userspace program should call this after a successful call to LNetInit().
- * Users must call this function at least once before any other functions.
- * For each successful call there must be a corresponding call to
- * LNetNIFini(). For subsequent calls to LNetNIInit(), \a requested_pid is
- * ignored.
- *
- * The PID used by LNet may be different from the one requested.
- * See LNetGetId().
- *
- * \param requested_pid PID requested by the caller.
- *
- * \return >= 0 on success, and < 0 error code on failures.
- */
-int
-LNetNIInit(lnet_pid_t requested_pid)
+inline __u32 lnet_get_numa_range(void)
{
- int im_a_router = 0;
- int rc;
-
- LNET_MUTEX_LOCK(&the_lnet.ln_api_mutex);
-
- LASSERT (the_lnet.ln_init);
- CDEBUG(D_OTHER, "refs %d\n", the_lnet.ln_refcount);
-
- if (the_lnet.ln_refcount > 0) {
- rc = the_lnet.ln_refcount++;
- goto out;
- }
-
- lnet_get_tunables();
-
- if (requested_pid == LNET_PID_ANY) {
- /* Don't instantiate LNET just for me */
- rc = -ENETDOWN;
- goto failed0;
- }
-
- rc = lnet_prepare(requested_pid);
- if (rc != 0)
- goto failed0;
-
- rc = lnet_startup_lndnis();
- if (rc != 0)
- goto failed1;
-
- rc = lnet_parse_routes(lnet_get_routes(), &im_a_router);
- if (rc != 0)
- goto failed2;
-
- rc = lnet_check_routes();
- if (rc != 0)
- goto failed2;
-
- rc = lnet_rtrpools_alloc(im_a_router);
- if (rc != 0)
- goto failed2;
-
- rc = lnet_acceptor_start();
- if (rc != 0)
- goto failed2;
-
- the_lnet.ln_refcount = 1;
- /* Now I may use my own API functions... */
-
- /* NB router checker needs the_lnet.ln_ping_info in
- * lnet_router_checker -> lnet_update_ni_status_locked */
- rc = lnet_ping_target_init();
- if (rc != 0)
- goto failed3;
-
- rc = lnet_router_checker_start();
- if (rc != 0)
- goto failed4;
-
- lnet_proc_init();
- goto out;
-
- failed4:
- lnet_ping_target_fini();
- failed3:
- the_lnet.ln_refcount = 0;
- lnet_acceptor_stop();
- failed2:
- lnet_destroy_routes();
- lnet_shutdown_lndnis();
- failed1:
- lnet_unprepare();
- failed0:
- LASSERT (rc < 0);
- out:
- LNET_MUTEX_UNLOCK(&the_lnet.ln_api_mutex);
- return rc;
+ return lnet_numa_range;
}
-EXPORT_SYMBOL(LNetNIInit);
/**
- * Stop LNet interfaces, routing, and forwarding.
- *
- * Users must call this function once for each successful call to LNetNIInit().
- * Once the LNetNIFini() operation has been started, the results of pending
- * API operations are undefined.
+ * LNet ioctl handler.
*
- * \return always 0 for current implementation.
*/
int
-LNetNIFini()
+LNetCtl(unsigned int cmd, void *arg)
{
- LNET_MUTEX_LOCK(&the_lnet.ln_api_mutex);
+ struct libcfs_ioctl_data *data = arg;
+ struct lnet_ioctl_config_data *config;
+ lnet_process_id_t id = {0};
+ lnet_ni_t *ni;
+ int rc;
+
+ BUILD_BUG_ON(sizeof(struct lnet_ioctl_net_config) +
+ sizeof(struct lnet_ioctl_config_data) > LIBCFS_IOC_DATA_MAX);
+
+ switch (cmd) {
+ case IOC_LIBCFS_GET_NI:
+ rc = LNetGetId(data->ioc_count, &id);
+ data->ioc_nid = id.nid;
+ return rc;
+
+ case IOC_LIBCFS_FAIL_NID:
+ return lnet_fail_nid(data->ioc_nid, data->ioc_count);
+
+ case IOC_LIBCFS_ADD_ROUTE:
+ config = arg;
+
+ if (config->cfg_hdr.ioc_len < sizeof(*config))
+ return -EINVAL;
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+ rc = lnet_add_route(config->cfg_net,
+ config->cfg_config_u.cfg_route.rtr_hop,
+ config->cfg_nid,
+ config->cfg_config_u.cfg_route.
+ rtr_priority);
+ if (rc == 0) {
+ rc = lnet_check_routes();
+ if (rc != 0)
+ lnet_del_route(config->cfg_net,
+ config->cfg_nid);
+ }
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+
+ case IOC_LIBCFS_DEL_ROUTE:
+ config = arg;
+
+ if (config->cfg_hdr.ioc_len < sizeof(*config))
+ return -EINVAL;
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+ rc = lnet_del_route(config->cfg_net, config->cfg_nid);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+
+ case IOC_LIBCFS_GET_ROUTE:
+ config = arg;
+
+ if (config->cfg_hdr.ioc_len < sizeof(*config))
+ return -EINVAL;
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+ rc = lnet_get_route(config->cfg_count,
+ &config->cfg_net,
+ &config->cfg_config_u.cfg_route.rtr_hop,
+ &config->cfg_nid,
+ &config->cfg_config_u.cfg_route.rtr_flags,
+ &config->cfg_config_u.cfg_route.
+ rtr_priority);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+
+ case IOC_LIBCFS_GET_LOCAL_NI: {
+ struct lnet_ioctl_config_ni *cfg_ni;
+ struct lnet_ioctl_config_lnd_tunables *tun = NULL;
+ struct lnet_ioctl_element_stats *stats;
+ __u32 tun_size;
+
+ cfg_ni = arg;
+ /* get the tunables if they are available */
+ if (cfg_ni->lic_cfg_hdr.ioc_len <
+ sizeof(*cfg_ni) + sizeof(*stats)+ sizeof(*tun))
+ return -EINVAL;
+
+ stats = (struct lnet_ioctl_element_stats *)
+ cfg_ni->lic_bulk;
+ tun = (struct lnet_ioctl_config_lnd_tunables *)
+ (cfg_ni->lic_bulk + sizeof(*stats));
+
+ tun_size = cfg_ni->lic_cfg_hdr.ioc_len - sizeof(*cfg_ni) -
+ sizeof(*stats);
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+ rc = lnet_get_ni_config(cfg_ni, tun, stats, tun_size);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+ }
- LASSERT (the_lnet.ln_init);
- LASSERT (the_lnet.ln_refcount > 0);
+ case IOC_LIBCFS_GET_NET: {
+ size_t total = sizeof(*config) +
+ sizeof(struct lnet_ioctl_net_config);
+ config = arg;
- if (the_lnet.ln_refcount != 1) {
- the_lnet.ln_refcount--;
- } else {
- LASSERT (!the_lnet.ln_niinit_self);
+ if (config->cfg_hdr.ioc_len < total)
+ return -EINVAL;
- lnet_proc_fini();
- lnet_router_checker_stop();
- lnet_ping_target_fini();
+ mutex_lock(&the_lnet.ln_api_mutex);
+ rc = lnet_get_net_config(config);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+ }
- /* Teardown fns that use my own API functions BEFORE here */
- the_lnet.ln_refcount = 0;
+ case IOC_LIBCFS_GET_LNET_STATS:
+ {
+ struct lnet_ioctl_lnet_stats *lnet_stats = arg;
- lnet_acceptor_stop();
- lnet_destroy_routes();
- lnet_shutdown_lndnis();
- lnet_unprepare();
- }
+ if (lnet_stats->st_hdr.ioc_len < sizeof(*lnet_stats))
+ return -EINVAL;
- LNET_MUTEX_UNLOCK(&the_lnet.ln_api_mutex);
- return 0;
-}
-EXPORT_SYMBOL(LNetNIFini);
+ mutex_lock(&the_lnet.ln_api_mutex);
+ lnet_counters_get(&lnet_stats->st_cntrs);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return 0;
+ }
-/**
- * This is an ugly hack to export IOC_LIBCFS_DEBUG_PEER and
- * IOC_LIBCFS_PORTALS_COMPATIBILITY commands to users, by tweaking the LNet
- * internal ioctl handler.
- *
- * IOC_LIBCFS_PORTALS_COMPATIBILITY is now deprecated, don't use it.
- *
- * \param cmd IOC_LIBCFS_DEBUG_PEER to print debugging data about a peer.
- * The data will be printed to system console. Don't use it excessively.
- * \param arg A pointer to lnet_process_id_t, process ID of the peer.
- *
- * \return Always return 0 when called by users directly (i.e., not via ioctl).
- */
-int
-LNetCtl(unsigned int cmd, void *arg)
-{
- struct libcfs_ioctl_data *data = arg;
- lnet_process_id_t id = {0};
- lnet_ni_t *ni;
- int rc;
-
- LASSERT (the_lnet.ln_init);
- LASSERT (the_lnet.ln_refcount > 0);
-
- switch (cmd) {
- case IOC_LIBCFS_GET_NI:
- rc = LNetGetId(data->ioc_count, &id);
- data->ioc_nid = id.nid;
- return rc;
-
- case IOC_LIBCFS_FAIL_NID:
- return lnet_fail_nid(data->ioc_nid, data->ioc_count);
-
- case IOC_LIBCFS_ADD_ROUTE:
- rc = lnet_add_route(data->ioc_net, data->ioc_count,
- data->ioc_nid, data->ioc_priority);
- return (rc != 0) ? rc : lnet_check_routes();
-
- case IOC_LIBCFS_DEL_ROUTE:
- return lnet_del_route(data->ioc_net, data->ioc_nid);
-
- case IOC_LIBCFS_GET_ROUTE:
- return lnet_get_route(data->ioc_count,
- &data->ioc_net, &data->ioc_count,
- &data->ioc_nid, &data->ioc_flags,
- &data->ioc_priority);
- case IOC_LIBCFS_NOTIFY_ROUTER:
- return lnet_notify(NULL, data->ioc_nid, data->ioc_flags,
- cfs_time_current() -
- cfs_time_seconds(cfs_time_current_sec() -
- (time_t)data->ioc_u64[0]));
-
- case IOC_LIBCFS_PORTALS_COMPATIBILITY:
- /* This can be removed once lustre stops calling it */
- return 0;
-
- case IOC_LIBCFS_LNET_DIST:
- rc = LNetDist(data->ioc_nid, &data->ioc_nid, &data->ioc_u32[1]);
- if (rc < 0 && rc != -EHOSTUNREACH)
- return rc;
-
- data->ioc_u32[0] = rc;
- return 0;
-
- case IOC_LIBCFS_TESTPROTOCOMPAT:
+ case IOC_LIBCFS_CONFIG_RTR:
+ config = arg;
+
+ if (config->cfg_hdr.ioc_len < sizeof(*config))
+ return -EINVAL;
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+ if (config->cfg_config_u.cfg_buffers.buf_enable) {
+ rc = lnet_rtrpools_enable();
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+ }
+ lnet_rtrpools_disable();
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return 0;
+
+ case IOC_LIBCFS_ADD_BUF:
+ config = arg;
+
+ if (config->cfg_hdr.ioc_len < sizeof(*config))
+ return -EINVAL;
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+ rc = lnet_rtrpools_adjust(config->cfg_config_u.cfg_buffers.
+ buf_tiny,
+ config->cfg_config_u.cfg_buffers.
+ buf_small,
+ config->cfg_config_u.cfg_buffers.
+ buf_large);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+
+ case IOC_LIBCFS_SET_NUMA_RANGE: {
+ struct lnet_ioctl_numa_range *numa;
+ numa = arg;
+ if (numa->nr_hdr.ioc_len != sizeof(*numa))
+ return -EINVAL;
+ mutex_lock(&the_lnet.ln_api_mutex);
+ lnet_numa_range = numa->nr_range;
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return 0;
+ }
+
+ case IOC_LIBCFS_GET_NUMA_RANGE: {
+ struct lnet_ioctl_numa_range *numa;
+ numa = arg;
+ if (numa->nr_hdr.ioc_len != sizeof(*numa))
+ return -EINVAL;
+ numa->nr_range = lnet_numa_range;
+ return 0;
+ }
+
+ case IOC_LIBCFS_GET_BUF: {
+ struct lnet_ioctl_pool_cfg *pool_cfg;
+ size_t total = sizeof(*config) + sizeof(*pool_cfg);
+
+ config = arg;
+
+ if (config->cfg_hdr.ioc_len < total)
+ return -EINVAL;
+
+ pool_cfg = (struct lnet_ioctl_pool_cfg *)config->cfg_bulk;
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+ rc = lnet_get_rtr_pool_cfg(config->cfg_count, pool_cfg);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+ }
+
+ case IOC_LIBCFS_ADD_PEER_NI: {
+ struct lnet_ioctl_peer_cfg *cfg = arg;
+
+ if (cfg->prcfg_hdr.ioc_len < sizeof(*cfg))
+ return -EINVAL;
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+ rc = lnet_add_peer_ni_to_peer(cfg->prcfg_key_nid,
+ cfg->prcfg_cfg_nid,
+ cfg->prcfg_mr);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+ }
+
+ case IOC_LIBCFS_DEL_PEER_NI: {
+ struct lnet_ioctl_peer_cfg *cfg = arg;
+
+ if (cfg->prcfg_hdr.ioc_len < sizeof(*cfg))
+ return -EINVAL;
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+ rc = lnet_del_peer_ni_from_peer(cfg->prcfg_key_nid,
+ cfg->prcfg_cfg_nid);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+ }
+
+ case IOC_LIBCFS_GET_PEER_INFO: {
+ struct lnet_ioctl_peer *peer_info = arg;
+
+ if (peer_info->pr_hdr.ioc_len < sizeof(*peer_info))
+ return -EINVAL;
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+ rc = lnet_get_peer_ni_info(
+ peer_info->pr_count,
+ &peer_info->pr_nid,
+ peer_info->pr_lnd_u.pr_peer_credits.cr_aliveness,
+ &peer_info->pr_lnd_u.pr_peer_credits.cr_ncpt,
+ &peer_info->pr_lnd_u.pr_peer_credits.cr_refcount,
+ &peer_info->pr_lnd_u.pr_peer_credits.cr_ni_peer_tx_credits,
+ &peer_info->pr_lnd_u.pr_peer_credits.cr_peer_tx_credits,
+ &peer_info->pr_lnd_u.pr_peer_credits.cr_peer_rtr_credits,
+ &peer_info->pr_lnd_u.pr_peer_credits.cr_peer_min_rtr_credits,
+ &peer_info->pr_lnd_u.pr_peer_credits.cr_peer_tx_qnob);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+ }
+
+ case IOC_LIBCFS_GET_PEER_NI: {
+ struct lnet_ioctl_peer_cfg *cfg = arg;
+ struct lnet_peer_ni_credit_info *lpni_cri;
+ struct lnet_ioctl_element_stats *lpni_stats;
+ size_t total = sizeof(*cfg) + sizeof(*lpni_cri) +
+ sizeof(*lpni_stats);
+
+ if (cfg->prcfg_hdr.ioc_len < total)
+ return -EINVAL;
+
+ lpni_cri = (struct lnet_peer_ni_credit_info*) cfg->prcfg_bulk;
+ lpni_stats = (struct lnet_ioctl_element_stats *)
+ (cfg->prcfg_bulk + sizeof(*lpni_cri));
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+ rc = lnet_get_peer_info(cfg->prcfg_idx, &cfg->prcfg_key_nid,
+ &cfg->prcfg_cfg_nid, &cfg->prcfg_mr,
+ lpni_cri, lpni_stats);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+ }
+
+ case IOC_LIBCFS_NOTIFY_ROUTER: {
+ unsigned long jiffies_passed;
+
+ jiffies_passed = ktime_get_real_seconds() - data->ioc_u64[0];
+ jiffies_passed = cfs_time_seconds(jiffies_passed);
+
+ return lnet_notify(NULL, data->ioc_nid, data->ioc_flags,
+ jiffies - jiffies_passed);
+ }
+
+ case IOC_LIBCFS_LNET_DIST:
+ rc = LNetDist(data->ioc_nid, &data->ioc_nid, &data->ioc_u32[1]);
+ if (rc < 0 && rc != -EHOSTUNREACH)
+ return rc;
+
+ data->ioc_u32[0] = rc;
+ return 0;
+
+ case IOC_LIBCFS_TESTPROTOCOMPAT:
lnet_net_lock(LNET_LOCK_EX);
the_lnet.ln_testprotocompat = data->ioc_flags;
lnet_net_unlock(LNET_LOCK_EX);
- return 0;
-
- case IOC_LIBCFS_PING:
- id.nid = data->ioc_nid;
- id.pid = data->ioc_u32[0];
- rc = lnet_ping(id, data->ioc_u32[1], /* timeout */
- (lnet_process_id_t *)data->ioc_pbuf1,
- data->ioc_plen1/sizeof(lnet_process_id_t));
- if (rc < 0)
- return rc;
- data->ioc_count = rc;
- return 0;
-
- case IOC_LIBCFS_DEBUG_PEER: {
- /* CAVEAT EMPTOR: this one designed for calling directly; not
- * via an ioctl */
- id = *((lnet_process_id_t *) arg);
-
- lnet_debug_peer(id.nid);
-
- ni = lnet_net2ni(LNET_NIDNET(id.nid));
- if (ni == NULL) {
- CDEBUG(D_WARNING, "No NI for %s\n", libcfs_id2str(id));
- } else {
- if (ni->ni_lnd->lnd_ctl == NULL) {
- CDEBUG(D_WARNING, "No ctl for %s\n",
- libcfs_id2str(id));
- } else {
- (void)ni->ni_lnd->lnd_ctl(ni, cmd, arg);
- }
-
- lnet_ni_decref(ni);
- }
- return 0;
- }
-
- default:
- ni = lnet_net2ni(data->ioc_net);
- if (ni == NULL)
- return -EINVAL;
-
- if (ni->ni_lnd->lnd_ctl == NULL)
- rc = -EINVAL;
- else
- rc = ni->ni_lnd->lnd_ctl(ni, cmd, arg);
-
- lnet_ni_decref(ni);
- return rc;
- }
- /* not reached */
+ return 0;
+
+ case IOC_LIBCFS_LNET_FAULT:
+ return lnet_fault_ctl(data->ioc_flags, data);
+
+ case IOC_LIBCFS_PING: {
+ signed long timeout;
+
+ id.nid = data->ioc_nid;
+ id.pid = data->ioc_u32[0];
+
+ /* Don't block longer than 2 minutes */
+ if (data->ioc_u32[1] > 120 * MSEC_PER_SEC)
+ return -EINVAL;
+
+ /* If timestamp is negative then disable timeout */
+ if ((s32)data->ioc_u32[1] < 0)
+ timeout = MAX_SCHEDULE_TIMEOUT;
+ else
+ timeout = msecs_to_jiffies(data->ioc_u32[1]);
+
+ rc = lnet_ping(id, timeout, data->ioc_pbuf1,
+ data->ioc_plen1 / sizeof(lnet_process_id_t));
+ if (rc < 0)
+ return rc;
+ data->ioc_count = rc;
+ return 0;
+ }
+
+ case IOC_LIBCFS_DBG: {
+ struct lnet_ioctl_dbg *dbg = arg;
+ struct lnet_dbg_task_info *dbg_info;
+ size_t total = sizeof(*dbg) + sizeof(*dbg_info);
+
+ if (dbg->dbg_hdr.ioc_len < total)
+ return -EINVAL;
+
+ dbg_info = (struct lnet_dbg_task_info*) dbg->dbg_bulk;
+
+ return lnet_handle_dbg_task(dbg, dbg_info);
+ }
+
+ default:
+ ni = lnet_net2ni_addref(data->ioc_net);
+ if (ni == NULL)
+ return -EINVAL;
+
+ if (ni->ni_net->net_lnd->lnd_ctl == NULL)
+ rc = -EINVAL;
+ else
+ rc = ni->ni_net->net_lnd->lnd_ctl(ni, cmd, arg);
+
+ lnet_ni_decref(ni);
+ return rc;
+ }
+ /* not reached */
}
EXPORT_SYMBOL(LNetCtl);
+void LNetDebugPeer(lnet_process_id_t id)
+{
+ lnet_debug_peer(id.nid);
+}
+EXPORT_SYMBOL(LNetDebugPeer);
+
/**
* Retrieve the lnet_process_id_t ID of LNet interface at \a index. Note that
* all interfaces share a same PID, as requested by LNetNIInit().
int
LNetGetId(unsigned int index, lnet_process_id_t *id)
{
- struct lnet_ni *ni;
- cfs_list_t *tmp;
- int cpt;
- int rc = -ENOENT;
+ struct lnet_ni *ni;
+ struct lnet_net *net;
+ int cpt;
+ int rc = -ENOENT;
- LASSERT(the_lnet.ln_init);
LASSERT(the_lnet.ln_refcount > 0);
cpt = lnet_net_lock_current();
- cfs_list_for_each(tmp, &the_lnet.ln_nis) {
- if (index-- != 0)
- continue;
-
- ni = cfs_list_entry(tmp, lnet_ni_t, ni_list);
+ list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
+ list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
+ if (index-- != 0)
+ continue;
- id->nid = ni->ni_nid;
- id->pid = the_lnet.ln_pid;
- rc = 0;
- break;
- }
+ id->nid = ni->ni_nid;
+ id->pid = the_lnet.ln_pid;
+ rc = 0;
+ break;
+ }
+ }
lnet_net_unlock(cpt);
return rc;
void
LNetSnprintHandle(char *str, int len, lnet_handle_any_t h)
{
- snprintf(str, len, LPX64, h.cookie);
+ snprintf(str, len, "%#llx", h.cookie);
}
EXPORT_SYMBOL(LNetSnprintHandle);
-static int
-lnet_create_ping_info(void)
+static int lnet_ping(lnet_process_id_t id, signed long timeout,
+ lnet_process_id_t __user *ids, int n_ids)
{
- int i;
- int n;
- int rc;
- unsigned int infosz;
- lnet_ni_t *ni;
- lnet_process_id_t id;
- lnet_ping_info_t *pinfo;
-
- for (n = 0; ; n++) {
- rc = LNetGetId(n, &id);
- if (rc == -ENOENT)
- break;
-
- LASSERT (rc == 0);
- }
-
- infosz = offsetof(lnet_ping_info_t, pi_ni[n]);
- LIBCFS_ALLOC(pinfo, infosz);
- if (pinfo == NULL) {
- CERROR("Can't allocate ping info[%d]\n", n);
- return -ENOMEM;
- }
-
- pinfo->pi_nnis = n;
- pinfo->pi_pid = the_lnet.ln_pid;
- pinfo->pi_magic = LNET_PROTO_PING_MAGIC;
- pinfo->pi_features = LNET_PING_FEAT_NI_STATUS;
-
- for (i = 0; i < n; i++) {
- lnet_ni_status_t *ns = &pinfo->pi_ni[i];
-
- rc = LNetGetId(i, &id);
- LASSERT (rc == 0);
-
- ns->ns_nid = id.nid;
- ns->ns_status = LNET_NI_STATUS_UP;
-
- lnet_net_lock(0);
-
- ni = lnet_nid2ni_locked(id.nid, 0);
- LASSERT(ni != NULL);
-
- lnet_ni_lock(ni);
- LASSERT(ni->ni_status == NULL);
- ni->ni_status = ns;
- lnet_ni_unlock(ni);
+ lnet_handle_eq_t eqh;
+ lnet_handle_md_t mdh;
+ lnet_event_t event;
+ lnet_md_t md = { NULL };
+ int which;
+ int unlinked = 0;
+ int replied = 0;
+ const signed long a_long_time = msecs_to_jiffies(60 * MSEC_PER_SEC);
+ int infosz;
+ struct lnet_ping_info *info;
+ lnet_process_id_t tmpid;
+ int i;
+ int nob;
+ int rc;
+ int rc2;
+ sigset_t blocked;
+
+ infosz = offsetof(struct lnet_ping_info, pi_ni[n_ids]);
+
+ /* n_ids limit is arbitrary */
+ if (n_ids <= 0 || n_ids > 20 || id.nid == LNET_NID_ANY)
+ return -EINVAL;
+
+ if (id.pid == LNET_PID_ANY)
+ id.pid = LNET_PID_LUSTRE;
+
+ LIBCFS_ALLOC(info, infosz);
+ if (info == NULL)
+ return -ENOMEM;
- lnet_ni_decref_locked(ni, 0);
- lnet_net_unlock(0);
+ /* NB 2 events max (including any unlink event) */
+ rc = LNetEQAlloc(2, LNET_EQ_HANDLER_NONE, &eqh);
+ if (rc != 0) {
+ CERROR("Can't allocate EQ: %d\n", rc);
+ goto out_0;
}
- the_lnet.ln_ping_info = pinfo;
- return 0;
-}
-
-static void
-lnet_destroy_ping_info(void)
-{
- struct lnet_ni *ni;
-
- lnet_net_lock(0);
+ /* initialize md content */
+ md.start = info;
+ md.length = infosz;
+ md.threshold = 2; /*GET/REPLY*/
+ md.max_size = 0;
+ md.options = LNET_MD_TRUNCATE;
+ md.user_ptr = NULL;
+ md.eq_handle = eqh;
- cfs_list_for_each_entry(ni, &the_lnet.ln_nis, ni_list) {
- lnet_ni_lock(ni);
- ni->ni_status = NULL;
- lnet_ni_unlock(ni);
+ rc = LNetMDBind(md, LNET_UNLINK, &mdh);
+ if (rc != 0) {
+ CERROR("Can't bind MD: %d\n", rc);
+ goto out_1;
}
- lnet_net_unlock(0);
+ rc = LNetGet(LNET_NID_ANY, mdh, id,
+ LNET_RESERVED_PORTAL,
+ LNET_PROTO_PING_MATCHBITS, 0);
- LIBCFS_FREE(the_lnet.ln_ping_info,
- offsetof(lnet_ping_info_t,
- pi_ni[the_lnet.ln_ping_info->pi_nnis]));
- the_lnet.ln_ping_info = NULL;
- return;
-}
+ if (rc != 0) {
+ /* Don't CERROR; this could be deliberate! */
-int
-lnet_ping_target_init(void)
-{
- lnet_md_t md = {0};
- lnet_handle_me_t meh;
- lnet_process_id_t id;
- int rc;
- int rc2;
- int infosz;
-
- rc = lnet_create_ping_info();
- if (rc != 0)
- return rc;
-
- /* We can have a tiny EQ since we only need to see the unlink event on
- * teardown, which by definition is the last one! */
- rc = LNetEQAlloc(2, LNET_EQ_HANDLER_NONE, &the_lnet.ln_ping_target_eq);
- if (rc != 0) {
- CERROR("Can't allocate ping EQ: %d\n", rc);
- goto failed_0;
- }
-
- memset(&id, 0, sizeof(lnet_process_id_t));
- id.nid = LNET_NID_ANY;
- id.pid = LNET_PID_ANY;
-
- rc = LNetMEAttach(LNET_RESERVED_PORTAL, id,
- LNET_PROTO_PING_MATCHBITS, 0,
- LNET_UNLINK, LNET_INS_AFTER,
- &meh);
- if (rc != 0) {
- CERROR("Can't create ping ME: %d\n", rc);
- goto failed_1;
- }
-
- /* initialize md content */
- infosz = offsetof(lnet_ping_info_t,
- pi_ni[the_lnet.ln_ping_info->pi_nnis]);
- md.start = the_lnet.ln_ping_info;
- md.length = infosz;
- md.threshold = LNET_MD_THRESH_INF;
- md.max_size = 0;
- md.options = LNET_MD_OP_GET | LNET_MD_TRUNCATE |
- LNET_MD_MANAGE_REMOTE;
- md.user_ptr = NULL;
- md.eq_handle = the_lnet.ln_ping_target_eq;
-
- rc = LNetMDAttach(meh, md,
- LNET_RETAIN,
- &the_lnet.ln_ping_target_md);
- if (rc != 0) {
- CERROR("Can't attach ping MD: %d\n", rc);
- goto failed_2;
- }
-
- return 0;
-
- failed_2:
- rc2 = LNetMEUnlink(meh);
- LASSERT (rc2 == 0);
- failed_1:
- rc2 = LNetEQFree(the_lnet.ln_ping_target_eq);
- LASSERT (rc2 == 0);
- failed_0:
- lnet_destroy_ping_info();
- return rc;
-}
+ rc2 = LNetMDUnlink(mdh);
+ LASSERT(rc2 == 0);
-void
-lnet_ping_target_fini(void)
-{
- lnet_event_t event;
- int rc;
- int which;
- int timeout_ms = 1000;
- cfs_sigset_t blocked = cfs_block_allsigs();
+ /* NB must wait for the UNLINK event below... */
+ unlinked = 1;
+ timeout = a_long_time;
+ }
- LNetMDUnlink(the_lnet.ln_ping_target_md);
- /* NB md could be busy; this just starts the unlink */
+ do {
+ /* MUST block for unlink to complete */
+ if (unlinked)
+ blocked = cfs_block_allsigs();
+
+ rc2 = LNetEQPoll(&eqh, 1, timeout, &event, &which);
+
+ if (unlinked)
+ cfs_restore_sigs(blocked);
+
+ CDEBUG(D_NET, "poll %d(%d %d)%s\n", rc2,
+ (rc2 <= 0) ? -1 : event.type,
+ (rc2 <= 0) ? -1 : event.status,
+ (rc2 > 0 && event.unlinked) ? " unlinked" : "");
+
+ LASSERT(rc2 != -EOVERFLOW); /* can't miss anything */
+
+ if (rc2 <= 0 || event.status != 0) {
+ /* timeout or error */
+ if (!replied && rc == 0)
+ rc = (rc2 < 0) ? rc2 :
+ (rc2 == 0) ? -ETIMEDOUT :
+ event.status;
+
+ if (!unlinked) {
+ /* Ensure completion in finite time... */
+ LNetMDUnlink(mdh);
+ /* No assertion (racing with network) */
+ unlinked = 1;
+ timeout = a_long_time;
+ } else if (rc2 == 0) {
+ /* timed out waiting for unlink */
+ CWARN("ping %s: late network completion\n",
+ libcfs_id2str(id));
+ }
+ } else if (event.type == LNET_EVENT_REPLY) {
+ replied = 1;
+ rc = event.mlength;
+ }
- for (;;) {
- rc = LNetEQPoll(&the_lnet.ln_ping_target_eq, 1,
- timeout_ms, &event, &which);
+ } while (rc2 <= 0 || !event.unlinked);
- /* I expect overflow... */
- LASSERT (rc >= 0 || rc == -EOVERFLOW);
+ if (!replied) {
+ if (rc >= 0)
+ CWARN("%s: Unexpected rc >= 0 but no reply!\n",
+ libcfs_id2str(id));
+ rc = -EIO;
+ goto out_1;
+ }
- if (rc == 0) {
- /* timed out: provide a diagnostic */
- CWARN("Still waiting for ping MD to unlink\n");
- timeout_ms *= 2;
- continue;
- }
+ nob = rc;
+ LASSERT(nob >= 0 && nob <= infosz);
- /* Got a valid event */
- if (event.unlinked)
- break;
- }
+ rc = -EPROTO; /* if I can't parse... */
- rc = LNetEQFree(the_lnet.ln_ping_target_eq);
- LASSERT (rc == 0);
- lnet_destroy_ping_info();
- cfs_restore_sigs(blocked);
-}
+ if (nob < 8) {
+ /* can't check magic/version */
+ CERROR("%s: ping info too short %d\n",
+ libcfs_id2str(id), nob);
+ goto out_1;
+ }
-int
-lnet_ping (lnet_process_id_t id, int timeout_ms, lnet_process_id_t *ids, int n_ids)
-{
- lnet_handle_eq_t eqh;
- lnet_handle_md_t mdh;
- lnet_event_t event;
- lnet_md_t md = {0};
- int which;
- int unlinked = 0;
- int replied = 0;
- const int a_long_time = 60000; /* mS */
- int infosz = offsetof(lnet_ping_info_t, pi_ni[n_ids]);
- lnet_ping_info_t *info;
- lnet_process_id_t tmpid;
- int i;
- int nob;
- int rc;
- int rc2;
- cfs_sigset_t blocked;
-
- if (n_ids <= 0 ||
- id.nid == LNET_NID_ANY ||
- timeout_ms > 500000 || /* arbitrary limit! */
- n_ids > 20) /* arbitrary limit! */
- return -EINVAL;
-
- if (id.pid == LNET_PID_ANY)
- id.pid = LUSTRE_SRV_LNET_PID;
-
- LIBCFS_ALLOC(info, infosz);
- if (info == NULL)
- return -ENOMEM;
-
- /* NB 2 events max (including any unlink event) */
- rc = LNetEQAlloc(2, LNET_EQ_HANDLER_NONE, &eqh);
- if (rc != 0) {
- CERROR("Can't allocate EQ: %d\n", rc);
- goto out_0;
- }
-
- /* initialize md content */
- md.start = info;
- md.length = infosz;
- md.threshold = 2; /*GET/REPLY*/
- md.max_size = 0;
- md.options = LNET_MD_TRUNCATE;
- md.user_ptr = NULL;
- md.eq_handle = eqh;
-
- rc = LNetMDBind(md, LNET_UNLINK, &mdh);
- if (rc != 0) {
- CERROR("Can't bind MD: %d\n", rc);
- goto out_1;
- }
-
- rc = LNetGet(LNET_NID_ANY, mdh, id,
- LNET_RESERVED_PORTAL,
- LNET_PROTO_PING_MATCHBITS, 0);
-
- if (rc != 0) {
- /* Don't CERROR; this could be deliberate! */
-
- rc2 = LNetMDUnlink(mdh);
- LASSERT (rc2 == 0);
-
- /* NB must wait for the UNLINK event below... */
- unlinked = 1;
- timeout_ms = a_long_time;
- }
-
- do {
- /* MUST block for unlink to complete */
- if (unlinked)
- blocked = cfs_block_allsigs();
-
- rc2 = LNetEQPoll(&eqh, 1, timeout_ms, &event, &which);
-
- if (unlinked)
- cfs_restore_sigs(blocked);
-
- CDEBUG(D_NET, "poll %d(%d %d)%s\n", rc2,
- (rc2 <= 0) ? -1 : event.type,
- (rc2 <= 0) ? -1 : event.status,
- (rc2 > 0 && event.unlinked) ? " unlinked" : "");
-
- LASSERT (rc2 != -EOVERFLOW); /* can't miss anything */
-
- if (rc2 <= 0 || event.status != 0) {
- /* timeout or error */
- if (!replied && rc == 0)
- rc = (rc2 < 0) ? rc2 :
- (rc2 == 0) ? -ETIMEDOUT :
- event.status;
-
- if (!unlinked) {
- /* Ensure completion in finite time... */
- LNetMDUnlink(mdh);
- /* No assertion (racing with network) */
- unlinked = 1;
- timeout_ms = a_long_time;
- } else if (rc2 == 0) {
- /* timed out waiting for unlink */
- CWARN("ping %s: late network completion\n",
- libcfs_id2str(id));
- }
- } else if (event.type == LNET_EVENT_REPLY) {
- replied = 1;
- rc = event.mlength;
- }
-
- } while (rc2 <= 0 || !event.unlinked);
-
- if (!replied) {
- if (rc >= 0)
- CWARN("%s: Unexpected rc >= 0 but no reply!\n",
- libcfs_id2str(id));
- rc = -EIO;
- goto out_1;
- }
-
- nob = rc;
- LASSERT (nob >= 0 && nob <= infosz);
-
- rc = -EPROTO; /* if I can't parse... */
-
- if (nob < 8) {
- /* can't check magic/version */
- CERROR("%s: ping info too short %d\n",
- libcfs_id2str(id), nob);
- goto out_1;
- }
-
- if (info->pi_magic == __swab32(LNET_PROTO_PING_MAGIC)) {
- lnet_swap_pinginfo(info);
- } else if (info->pi_magic != LNET_PROTO_PING_MAGIC) {
- CERROR("%s: Unexpected magic %08x\n",
- libcfs_id2str(id), info->pi_magic);
- goto out_1;
- }
+ if (info->pi_magic == __swab32(LNET_PROTO_PING_MAGIC)) {
+ lnet_swap_pinginfo(info);
+ } else if (info->pi_magic != LNET_PROTO_PING_MAGIC) {
+ CERROR("%s: Unexpected magic %08x\n",
+ libcfs_id2str(id), info->pi_magic);
+ goto out_1;
+ }
if ((info->pi_features & LNET_PING_FEAT_NI_STATUS) == 0) {
CERROR("%s: ping w/o NI status: 0x%x\n",
goto out_1;
}
- if (nob < offsetof(lnet_ping_info_t, pi_ni[0])) {
- CERROR("%s: Short reply %d(%d min)\n", libcfs_id2str(id),
- nob, (int)offsetof(lnet_ping_info_t, pi_ni[0]));
- goto out_1;
- }
+ if (nob < offsetof(struct lnet_ping_info, pi_ni[0])) {
+ CERROR("%s: Short reply %d(%d min)\n", libcfs_id2str(id),
+ nob, (int)offsetof(struct lnet_ping_info, pi_ni[0]));
+ goto out_1;
+ }
- if (info->pi_nnis < n_ids)
- n_ids = info->pi_nnis;
+ if (info->pi_nnis < n_ids)
+ n_ids = info->pi_nnis;
- if (nob < offsetof(lnet_ping_info_t, pi_ni[n_ids])) {
- CERROR("%s: Short reply %d(%d expected)\n", libcfs_id2str(id),
- nob, (int)offsetof(lnet_ping_info_t, pi_ni[n_ids]));
- goto out_1;
- }
+ if (nob < offsetof(struct lnet_ping_info, pi_ni[n_ids])) {
+ CERROR("%s: Short reply %d(%d expected)\n", libcfs_id2str(id),
+ nob, (int)offsetof(struct lnet_ping_info, pi_ni[n_ids]));
+ goto out_1;
+ }
- rc = -EFAULT; /* If I SEGV... */
+ rc = -EFAULT; /* If I SEGV... */
- for (i = 0; i < n_ids; i++) {
- tmpid.pid = info->pi_pid;
- tmpid.nid = info->pi_ni[i].ns_nid;
+ memset(&tmpid, 0, sizeof(tmpid));
+ for (i = 0; i < n_ids; i++) {
+ tmpid.pid = info->pi_pid;
+ tmpid.nid = info->pi_ni[i].ns_nid;
if (copy_to_user(&ids[i], &tmpid, sizeof(tmpid)))
- goto out_1;
- }
- rc = info->pi_nnis;
+ goto out_1;
+ }
+ rc = info->pi_nnis;
out_1:
- rc2 = LNetEQFree(eqh);
- if (rc2 != 0)
- CERROR("rc2 %d\n", rc2);
- LASSERT (rc2 == 0);
+ rc2 = LNetEQFree(eqh);
+ if (rc2 != 0)
+ CERROR("rc2 %d\n", rc2);
+ LASSERT(rc2 == 0);
out_0:
- LIBCFS_FREE(info, infosz);
- return rc;
+ LIBCFS_FREE(info, infosz);
+ return rc;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff