-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, Whamcloud, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
void
lnet_init_locks(void)
{
- spin_lock_init (&the_lnet.ln_lock);
- cfs_waitq_init (&the_lnet.ln_waitq);
- init_mutex(&the_lnet.ln_lnd_mutex);
- init_mutex(&the_lnet.ln_api_mutex);
+ cfs_spin_lock_init(&the_lnet.ln_lock);
+ cfs_spin_lock_init(&the_lnet.ln_eq_wait_lock);
+ cfs_waitq_init(&the_lnet.ln_eq_waitq);
+ cfs_mutex_init(&the_lnet.ln_lnd_mutex);
+ cfs_mutex_init(&the_lnet.ln_api_mutex);
}
void
int len;
int nob;
int rc;
- struct list_head *tmp;
+ cfs_list_t *tmp;
#ifdef NOT_YET
if (networks != NULL && ip2nets != NULL) {
return (rc == 0) ? networks : NULL;
}
#else
- ip2nets = NULL;
- rc = 0;
+ SET_BUT_UNUSED(ip2nets);
+ SET_BUT_UNUSED(rc);
#endif
if (networks != NULL)
return networks;
*str = 0;
sep = "";
- list_for_each (tmp, &the_lnet.ln_lnds) {
- lnd_t *lnd = list_entry(tmp, lnd_t, lnd_list);
+ 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));
void lnet_init_locks(void)
{
- the_lnet.ln_lock = 0;
- the_lnet.ln_lnd_mutex = 0;
- the_lnet.ln_api_mutex = 0;
+ the_lnet.ln_lock = 0;
+ the_lnet.ln_eq_wait_lock = 0;
+ the_lnet.ln_lnd_mutex = 0;
+ the_lnet.ln_api_mutex = 0;
}
void lnet_fini_locks(void)
{
- LASSERT (the_lnet.ln_api_mutex == 0);
- LASSERT (the_lnet.ln_lnd_mutex == 0);
- LASSERT (the_lnet.ln_lock == 0);
+ LASSERT(the_lnet.ln_api_mutex == 0);
+ LASSERT(the_lnet.ln_lnd_mutex == 0);
+ LASSERT(the_lnet.ln_lock == 0);
+ LASSERT(the_lnet.ln_eq_wait_lock == 0);
}
# else
void lnet_init_locks(void)
{
- pthread_cond_init(&the_lnet.ln_cond, NULL);
- pthread_mutex_init(&the_lnet.ln_lock, NULL);
- pthread_mutex_init(&the_lnet.ln_lnd_mutex, NULL);
- pthread_mutex_init(&the_lnet.ln_api_mutex, NULL);
+ pthread_cond_init(&the_lnet.ln_eq_cond, NULL);
+ pthread_mutex_init(&the_lnet.ln_lock, 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);
}
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_lock);
- pthread_cond_destroy(&the_lnet.ln_cond);
+ pthread_mutex_destroy(&the_lnet.ln_api_mutex);
+ pthread_mutex_destroy(&the_lnet.ln_lnd_mutex);
+ pthread_mutex_destroy(&the_lnet.ln_lock);
+ pthread_mutex_destroy(&the_lnet.ln_eq_wait_lock);
+ pthread_cond_destroy(&the_lnet.ln_eq_cond);
}
# endif
#endif
+static int
+lnet_create_locks(void)
+{
+ lnet_init_locks();
+
+ the_lnet.ln_res_lock = cfs_percpt_lock_alloc(lnet_cpt_table());
+ if (the_lnet.ln_res_lock != NULL)
+ return 0;
+
+ lnet_fini_locks();
+ return -ENOMEM;
+}
+
+static void
+lnet_destroy_locks(void)
+{
+ if (the_lnet.ln_res_lock != NULL) {
+ cfs_percpt_lock_free(the_lnet.ln_res_lock);
+ the_lnet.ln_res_lock = NULL;
+ }
+
+ lnet_fini_locks();
+}
+
void lnet_assert_wire_constants (void)
{
/* Wire protocol assertions generated by 'wirecheck'
lnet_find_lnd_by_type (int type)
{
lnd_t *lnd;
- struct list_head *tmp;
+ cfs_list_t *tmp;
/* holding lnd mutex */
- list_for_each (tmp, &the_lnet.ln_lnds) {
- lnd = list_entry(tmp, lnd_t, lnd_list);
+ 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;
void
lnet_register_lnd (lnd_t *lnd)
{
- LNET_MUTEX_DOWN(&the_lnet.ln_lnd_mutex);
+ LNET_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);
- list_add_tail (&lnd->lnd_list, &the_lnet.ln_lnds);
+ cfs_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));
- LNET_MUTEX_UP(&the_lnet.ln_lnd_mutex);
+ LNET_MUTEX_UNLOCK(&the_lnet.ln_lnd_mutex);
}
void
lnet_unregister_lnd (lnd_t *lnd)
{
- LNET_MUTEX_DOWN(&the_lnet.ln_lnd_mutex);
+ LNET_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);
- list_del (&lnd->lnd_list);
+ cfs_list_del (&lnd->lnd_list);
CDEBUG(D_NET, "%s LND unregistered\n", libcfs_lnd2str(lnd->lnd_type));
- LNET_MUTEX_UP(&the_lnet.ln_lnd_mutex);
+ LNET_MUTEX_UNLOCK(&the_lnet.ln_lnd_mutex);
}
-#ifndef LNET_USE_LIB_FREELIST
-
-int
-lnet_descriptor_setup (void)
+void
+lnet_counters_get(lnet_counters_t *counters)
{
- return 0;
+ lnet_counters_t *ctr;
+
+ memset(counters, 0, sizeof(*counters));
+
+ LNET_LOCK();
+ ctr = the_lnet.ln_counters;
+ do { /* iterate over counters of all CPTs in upcoming patches */
+ counters->msgs_max += ctr->msgs_max;
+ counters->msgs_alloc += ctr->msgs_alloc;
+ counters->errors += ctr->errors;
+ 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->send_length += ctr->send_length;
+ counters->recv_length += ctr->recv_length;
+ counters->route_length += ctr->route_length;
+ counters->drop_length += ctr->drop_length;
+ } while (0);
+
+ LNET_UNLOCK();
}
+EXPORT_SYMBOL(lnet_counters_get);
void
-lnet_descriptor_cleanup (void)
+lnet_counters_reset(void)
{
+ lnet_counters_t *counters;
+
+ LNET_LOCK();
+ counters = the_lnet.ln_counters;
+ do { /* iterate over counters of all CPTs in upcoming patches */
+ memset(counters, 0, sizeof(lnet_counters_t));
+ } while (0);
+ LNET_UNLOCK();
}
+EXPORT_SYMBOL(lnet_counters_reset);
-#else
+#ifdef LNET_USE_LIB_FREELIST
int
lnet_freelist_init (lnet_freelist_t *fl, int n, int size)
do
{
memset (space, 0, size);
- list_add ((struct list_head *)space, &fl->fl_list);
+ cfs_list_add ((cfs_list_t *)space, &fl->fl_list);
space += size;
} while (--n != 0);
void
lnet_freelist_fini (lnet_freelist_t *fl)
{
- struct list_head *el;
+ cfs_list_t *el;
int count;
if (fl->fl_nobjs == 0)
memset (fl, 0, sizeof (*fl));
}
-int
-lnet_descriptor_setup (void)
-{
- /* NB on failure caller must still call lnet_descriptor_cleanup */
- /* ****** */
- int rc;
-
- memset (&the_lnet.ln_free_mes, 0, sizeof (the_lnet.ln_free_mes));
- memset (&the_lnet.ln_free_msgs, 0, sizeof (the_lnet.ln_free_msgs));
- memset (&the_lnet.ln_free_mds, 0, sizeof (the_lnet.ln_free_mds));
- memset (&the_lnet.ln_free_eqs, 0, sizeof (the_lnet.ln_free_eqs));
-
- rc = lnet_freelist_init(&the_lnet.ln_free_mes,
- MAX_MES, sizeof (lnet_me_t));
- if (rc != 0)
- return (rc);
-
- rc = lnet_freelist_init(&the_lnet.ln_free_msgs,
- MAX_MSGS, sizeof (lnet_msg_t));
- if (rc != 0)
- return (rc);
-
- rc = lnet_freelist_init(&the_lnet.ln_free_mds,
- MAX_MDS, sizeof (lnet_libmd_t));
- if (rc != 0)
- return (rc);
-
- rc = lnet_freelist_init(&the_lnet.ln_free_eqs,
- MAX_EQS, sizeof (lnet_eq_t));
- return (rc);
-}
-
-void
-lnet_descriptor_cleanup (void)
-{
- lnet_freelist_fini (&the_lnet.ln_free_mes);
- lnet_freelist_fini (&the_lnet.ln_free_msgs);
- lnet_freelist_fini (&the_lnet.ln_free_mds);
- lnet_freelist_fini (&the_lnet.ln_free_eqs);
-}
-
-#endif
+#endif /* LNET_USE_LIB_FREELIST */
__u64
lnet_create_interface_cookie (void)
int rc = gettimeofday (&tv, NULL);
LASSERT (rc == 0);
#else
- do_gettimeofday(&tv);
+ cfs_gettimeofday(&tv);
#endif
cookie = tv.tv_sec;
cookie *= 1000000;
return cookie;
}
-int
-lnet_setup_handle_hash (void)
+static char *
+lnet_res_type2str(int type)
{
- int i;
+ switch (type) {
+ default:
+ LBUG();
+ case LNET_COOKIE_TYPE_MD:
+ return "MD";
+ case LNET_COOKIE_TYPE_ME:
+ return "ME";
+ case LNET_COOKIE_TYPE_EQ:
+ return "EQ";
+ }
+}
- /* Arbitrary choice of hash table size */
-#ifdef __KERNEL__
- the_lnet.ln_lh_hash_size = CFS_PAGE_SIZE / sizeof (struct list_head);
-#else
- the_lnet.ln_lh_hash_size = (MAX_MES + MAX_MDS + MAX_EQS)/4;
-#endif
- LIBCFS_ALLOC(the_lnet.ln_lh_hash_table,
- the_lnet.ln_lh_hash_size * sizeof (struct list_head));
- if (the_lnet.ln_lh_hash_table == NULL)
- return (-ENOMEM);
+void
+lnet_res_container_cleanup(struct lnet_res_container *rec)
+{
+ int count = 0;
- for (i = 0; i < the_lnet.ln_lh_hash_size; i++)
- CFS_INIT_LIST_HEAD (&the_lnet.ln_lh_hash_table[i]);
+ if (rec->rec_type == 0) /* not set yet, it's a uninitialized */
+ return;
- the_lnet.ln_next_object_cookie = LNET_COOKIE_TYPES;
+ while (!cfs_list_empty(&rec->rec_active)) {
+ cfs_list_t *e = rec->rec_active.next;
- return (0);
-}
+ cfs_list_del_init(e);
+ if (rec->rec_type == LNET_COOKIE_TYPE_EQ) {
+ lnet_eq_free(cfs_list_entry(e, lnet_eq_t, eq_list));
-void
-lnet_cleanup_handle_hash (void)
-{
- if (the_lnet.ln_lh_hash_table == NULL)
- return;
+ } else if (rec->rec_type == LNET_COOKIE_TYPE_MD) {
+ lnet_md_free(cfs_list_entry(e, lnet_libmd_t, md_list));
- LIBCFS_FREE(the_lnet.ln_lh_hash_table,
- the_lnet.ln_lh_hash_size * sizeof (struct list_head));
-}
+ } else { /* NB: Active MEs should be attached on portals */
+ LBUG();
+ }
+ count++;
+ }
-lnet_libhandle_t *
-lnet_lookup_cookie (__u64 cookie, int type)
-{
- /* ALWAYS called with LNET_LOCK held */
- struct list_head *list;
- struct list_head *el;
- unsigned int hash;
+ if (count > 0) {
+ /* Found alive MD/ME/EQ, user really should unlink/free
+ * all of them before finalize LNet, but if someone didn't,
+ * we have to recycle garbage for him */
+ CERROR("%d active elements on exit of %s container\n",
+ count, lnet_res_type2str(rec->rec_type));
+ }
- if ((cookie & (LNET_COOKIE_TYPES - 1)) != type)
- return (NULL);
+#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_lh_hash = NULL;
+ }
- hash = ((unsigned int)cookie) % the_lnet.ln_lh_hash_size;
- list = &the_lnet.ln_lh_hash_table[hash];
+ rec->rec_type = 0; /* mark it as finalized */
+}
- list_for_each (el, list) {
- lnet_libhandle_t *lh = list_entry (el, lnet_libhandle_t,
- lh_hash_chain);
+int
+lnet_res_container_setup(struct lnet_res_container *rec,
+ int cpt, int type, int objnum, int objsz)
+{
+ int rc = 0;
+ int i;
- if (lh->lh_cookie == cookie)
- return (lh);
- }
+ LASSERT(rec->rec_type == 0);
+
+ rec->rec_type = type;
+ CFS_INIT_LIST_HEAD(&rec->rec_active);
- return (NULL);
+#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 */
+ LIBCFS_CPT_ALLOC(rec->rec_lh_hash, lnet_cpt_table(), cpt,
+ LNET_LH_HASH_SIZE * sizeof(rec->rec_lh_hash[0]));
+ if (rec->rec_lh_hash == NULL) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ for (i = 0; i < LNET_LH_HASH_SIZE; i++)
+ CFS_INIT_LIST_HEAD(&rec->rec_lh_hash[i]);
+
+ return 0;
+
+out:
+ CERROR("Failed to setup %s resource container\n",
+ lnet_res_type2str(type));
+ lnet_res_container_cleanup(rec);
+ return rc;
}
-void
-lnet_initialise_handle (lnet_libhandle_t *lh, int type)
+static void
+lnet_res_containers_destroy(struct lnet_res_container **recs)
{
- /* ALWAYS called with LNET_LOCK held */
- unsigned int hash;
+ struct lnet_res_container *rec;
+ int i;
- LASSERT (type >= 0 && type < LNET_COOKIE_TYPES);
- lh->lh_cookie = the_lnet.ln_next_object_cookie | type;
- the_lnet.ln_next_object_cookie += LNET_COOKIE_TYPES;
+ cfs_percpt_for_each(rec, i, recs)
+ lnet_res_container_cleanup(rec);
- hash = ((unsigned int)lh->lh_cookie) % the_lnet.ln_lh_hash_size;
- list_add (&lh->lh_hash_chain, &the_lnet.ln_lh_hash_table[hash]);
+ cfs_percpt_free(recs);
}
-void
-lnet_invalidate_handle (lnet_libhandle_t *lh)
+static struct lnet_res_container **
+lnet_res_containers_create(int type, int objnum, int objsz)
{
- /* ALWAYS called with LNET_LOCK held */
- list_del (&lh->lh_hash_chain);
+ struct lnet_res_container **recs;
+ struct lnet_res_container *rec;
+ int rc;
+ int i;
+
+ recs = cfs_percpt_alloc(lnet_cpt_table(), sizeof(*rec));
+ if (recs == NULL) {
+ CERROR("Failed to allocate %s resource containers\n",
+ lnet_res_type2str(type));
+ return NULL;
+ }
+
+ cfs_percpt_for_each(rec, i, recs) {
+ rc = lnet_res_container_setup(rec, i, type, objnum, objsz);
+ if (rc != 0) {
+ lnet_res_containers_destroy(recs);
+ return NULL;
+ }
+ }
+
+ return recs;
}
-int
-lnet_init_finalizers(void)
+lnet_libhandle_t *
+lnet_res_lh_lookup(struct lnet_res_container *rec, __u64 cookie)
{
-#ifdef __KERNEL__
- int i;
+ /* ALWAYS called with lnet_res_lock held */
+ cfs_list_t *head;
+ lnet_libhandle_t *lh;
+ unsigned int hash;
- the_lnet.ln_nfinalizers = (int) num_online_cpus();
+ if ((cookie & (LNET_COOKIE_TYPES - 1)) != rec->rec_type)
+ return NULL;
- LIBCFS_ALLOC(the_lnet.ln_finalizers,
- the_lnet.ln_nfinalizers *
- sizeof(*the_lnet.ln_finalizers));
- if (the_lnet.ln_finalizers == NULL) {
- CERROR("Can't allocate ln_finalizers\n");
- return -ENOMEM;
- }
+ hash = cookie >> (LNET_COOKIE_TYPE_BITS + LNET_CPT_BITS);
+ head = &rec->rec_lh_hash[hash & LNET_LH_HASH_MASK];
- for (i = 0; i < the_lnet.ln_nfinalizers; i++)
- the_lnet.ln_finalizers[i] = NULL;
-#else
- the_lnet.ln_finalizing = 0;
-#endif
+ cfs_list_for_each_entry(lh, head, lh_hash_chain) {
+ if (lh->lh_cookie == cookie)
+ return lh;
+ }
- CFS_INIT_LIST_HEAD(&the_lnet.ln_finalizeq);
- return 0;
+ return NULL;
}
void
-lnet_fini_finalizers(void)
+lnet_res_lh_initialize(struct lnet_res_container *rec, lnet_libhandle_t *lh)
{
-#ifdef __KERNEL__
- int i;
+ /* ALWAYS called with lnet_res_lock held */
+ unsigned int ibits = LNET_COOKIE_TYPE_BITS + LNET_CPT_BITS;
+ unsigned int hash;
- for (i = 0; i < the_lnet.ln_nfinalizers; i++)
- LASSERT (the_lnet.ln_finalizers[i] == NULL);
+ lh->lh_cookie = rec->rec_lh_cookie;
+ rec->rec_lh_cookie += 1 << ibits;
- LIBCFS_FREE(the_lnet.ln_finalizers,
- the_lnet.ln_nfinalizers *
- sizeof(*the_lnet.ln_finalizers));
-#else
- LASSERT (!the_lnet.ln_finalizing);
-#endif
- LASSERT (list_empty(&the_lnet.ln_finalizeq));
+ hash = (lh->lh_cookie >> ibits) & LNET_LH_HASH_MASK;
+
+ cfs_list_add(&lh->lh_hash_chain, &rec->rec_lh_hash[hash]);
}
#ifndef __KERNEL__
-/* Temporary workaround to allow uOSS and test programs force server
+/**
+ * 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 */
}
#endif
+int lnet_unprepare(void);
+
int
lnet_prepare(lnet_pid_t requested_pid)
{
/* Prepare to bring up the network */
- int rc = 0;
- int i;
+ struct lnet_res_container **recs;
+ int rc = 0;
LASSERT (the_lnet.ln_refcount == 0);
}
#endif
- rc = lnet_descriptor_setup();
- if (rc != 0)
- goto failed0;
+ CFS_INIT_LIST_HEAD(&the_lnet.ln_test_peers);
+ CFS_INIT_LIST_HEAD(&the_lnet.ln_nis);
+ CFS_INIT_LIST_HEAD(&the_lnet.ln_zombie_nis);
+ CFS_INIT_LIST_HEAD(&the_lnet.ln_remote_nets);
+ CFS_INIT_LIST_HEAD(&the_lnet.ln_routers);
- memset(&the_lnet.ln_counters, 0,
- sizeof(the_lnet.ln_counters));
+ the_lnet.ln_interface_cookie = lnet_create_interface_cookie();
- CFS_INIT_LIST_HEAD (&the_lnet.ln_active_msgs);
- CFS_INIT_LIST_HEAD (&the_lnet.ln_active_mds);
- CFS_INIT_LIST_HEAD (&the_lnet.ln_active_eqs);
- CFS_INIT_LIST_HEAD (&the_lnet.ln_test_peers);
- CFS_INIT_LIST_HEAD (&the_lnet.ln_nis);
- CFS_INIT_LIST_HEAD (&the_lnet.ln_zombie_nis);
- CFS_INIT_LIST_HEAD (&the_lnet.ln_remote_nets);
- CFS_INIT_LIST_HEAD (&the_lnet.ln_routers);
+ LIBCFS_ALLOC(the_lnet.ln_counters, sizeof(lnet_counters_t));
+ if (the_lnet.ln_counters == NULL) {
+ CERROR("Failed to allocate counters for LNet\n");
+ rc = -ENOMEM;
+ goto failed;
+ }
- the_lnet.ln_interface_cookie = lnet_create_interface_cookie();
+ rc = lnet_peer_table_create();
+ if (rc != 0)
+ goto failed;
- lnet_init_rtrpools();
+ /* NB: we will have instance of message container per CPT soon */
+ rc = lnet_msg_container_setup(&the_lnet.ln_msg_container);
+ if (rc != 0)
+ goto failed;
- rc = lnet_setup_handle_hash ();
- if (rc != 0)
- goto failed0;
+ rc = lnet_res_container_setup(&the_lnet.ln_eq_container, 0,
+ LNET_COOKIE_TYPE_EQ, LNET_FL_MAX_EQS,
+ sizeof(lnet_eq_t));
+ if (rc != 0)
+ goto failed;
- rc = lnet_create_peer_table();
- if (rc != 0)
- goto failed1;
+ recs = lnet_res_containers_create(LNET_COOKIE_TYPE_ME, LNET_FL_MAX_MES,
+ sizeof(lnet_me_t));
+ if (recs == NULL)
+ goto failed;
- rc = lnet_init_finalizers();
- if (rc != 0)
- goto failed2;
+ the_lnet.ln_me_containers = recs;
- the_lnet.ln_nportals = MAX_PORTALS;
- LIBCFS_ALLOC(the_lnet.ln_portals,
- the_lnet.ln_nportals *
- sizeof(*the_lnet.ln_portals));
- if (the_lnet.ln_portals == NULL) {
- rc = -ENOMEM;
- goto failed3;
- }
+ /* NB: we will have instance of MD container per CPT soon */
+ recs = lnet_res_containers_create(LNET_COOKIE_TYPE_MD, LNET_FL_MAX_MDS,
+ sizeof(lnet_libmd_t));
+ if (recs == NULL)
+ goto failed;
- for (i = 0; i < the_lnet.ln_nportals; i++) {
- CFS_INIT_LIST_HEAD(&(the_lnet.ln_portals[i].ptl_ml));
- CFS_INIT_LIST_HEAD(&(the_lnet.ln_portals[i].ptl_msgq));
- the_lnet.ln_portals[i].ptl_options = 0;
- }
+ the_lnet.ln_md_containers = recs;
- return 0;
+ rc = lnet_portals_create();
+ if (rc != 0) {
+ CERROR("Failed to create portals for LNet: %d\n", rc);
+ goto failed;
+ }
- failed3:
- lnet_fini_finalizers();
- failed2:
- lnet_destroy_peer_table();
- failed1:
- lnet_cleanup_handle_hash();
- failed0:
- lnet_descriptor_cleanup();
- return rc;
+ return 0;
+
+ failed:
+ lnet_unprepare();
+ return rc;
}
int
lnet_unprepare (void)
{
- int idx;
-
/* 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
lnet_fail_nid(LNET_NID_ANY, 0);
- LASSERT (list_empty(&the_lnet.ln_test_peers));
+ LASSERT (cfs_list_empty(&the_lnet.ln_test_peers));
LASSERT (the_lnet.ln_refcount == 0);
- LASSERT (list_empty(&the_lnet.ln_nis));
- LASSERT (list_empty(&the_lnet.ln_zombie_nis));
+ LASSERT (cfs_list_empty(&the_lnet.ln_nis));
+ LASSERT (cfs_list_empty(&the_lnet.ln_zombie_nis));
LASSERT (the_lnet.ln_nzombie_nis == 0);
- for (idx = 0; idx < the_lnet.ln_nportals; idx++) {
- LASSERT (list_empty(&the_lnet.ln_portals[idx].ptl_msgq));
+ lnet_portals_destroy();
- while (!list_empty (&the_lnet.ln_portals[idx].ptl_ml)) {
- lnet_me_t *me = list_entry (the_lnet.ln_portals[idx].ptl_ml.next,
- lnet_me_t, me_list);
+ if (the_lnet.ln_md_containers != NULL) {
+ lnet_res_containers_destroy(the_lnet.ln_md_containers);
+ the_lnet.ln_md_containers = NULL;
+ }
- CERROR ("Active me %p on exit\n", me);
- list_del (&me->me_list);
- lnet_me_free (me);
- }
- }
-
- while (!list_empty (&the_lnet.ln_active_mds)) {
- lnet_libmd_t *md = list_entry (the_lnet.ln_active_mds.next,
- lnet_libmd_t, md_list);
-
- CERROR ("Active md %p on exit\n", md);
- list_del_init (&md->md_list);
- lnet_md_free (md);
- }
-
- while (!list_empty (&the_lnet.ln_active_eqs)) {
- lnet_eq_t *eq = list_entry (the_lnet.ln_active_eqs.next,
- lnet_eq_t, eq_list);
+ if (the_lnet.ln_me_containers != NULL) {
+ lnet_res_containers_destroy(the_lnet.ln_me_containers);
+ the_lnet.ln_me_containers = NULL;
+ }
- CERROR ("Active eq %p on exit\n", eq);
- list_del (&eq->eq_list);
- lnet_eq_free (eq);
- }
-
- while (!list_empty (&the_lnet.ln_active_msgs)) {
- lnet_msg_t *msg = list_entry (the_lnet.ln_active_msgs.next,
- lnet_msg_t, msg_activelist);
+ lnet_res_container_cleanup(&the_lnet.ln_eq_container);
- CERROR ("Active msg %p on exit\n", msg);
- LASSERT (msg->msg_onactivelist);
- msg->msg_onactivelist = 0;
- list_del (&msg->msg_activelist);
- lnet_msg_free (msg);
- }
+ lnet_msg_container_cleanup(&the_lnet.ln_msg_container);
+ lnet_peer_table_destroy();
+ lnet_rtrpools_free();
- LIBCFS_FREE(the_lnet.ln_portals,
- the_lnet.ln_nportals * sizeof(*the_lnet.ln_portals));
+ if (the_lnet.ln_counters != NULL) {
+ LIBCFS_FREE(the_lnet.ln_counters, sizeof(lnet_counters_t));
+ the_lnet.ln_counters = NULL;
+ }
- lnet_free_rtrpools();
- lnet_fini_finalizers();
- lnet_destroy_peer_table();
- lnet_cleanup_handle_hash();
- lnet_descriptor_cleanup();
-
- return (0);
+ return 0;
}
lnet_ni_t *
lnet_net2ni_locked (__u32 net)
{
- struct list_head *tmp;
+ cfs_list_t *tmp;
lnet_ni_t *ni;
- list_for_each (tmp, &the_lnet.ln_nis) {
- ni = list_entry(tmp, lnet_ni_t, ni_list);
+ 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);
return NULL;
}
+unsigned int
+lnet_nid_cpt_hash(lnet_nid_t nid)
+{
+ __u64 key = nid;
+ unsigned int val;
+
+ val = cfs_hash_long(key, LNET_CPT_BITS);
+ /* NB: LNET_CP_NUMBER doesn't have to be PO2 */
+ if (val < LNET_CPT_NUMBER)
+ return val;
+
+ return (unsigned int)((key + val + (val >> 1)) % LNET_CPT_NUMBER);
+}
+
+int
+lnet_cpt_of_nid(lnet_nid_t nid)
+{
+ if (LNET_CPT_NUMBER == 1)
+ return 0; /* the only one */
+
+ return lnet_nid_cpt_hash(nid);
+}
+EXPORT_SYMBOL(lnet_cpt_of_nid);
+
int
lnet_islocalnet (__u32 net)
{
lnet_ni_t *
lnet_nid2ni_locked (lnet_nid_t nid)
{
- struct list_head *tmp;
+ cfs_list_t *tmp;
lnet_ni_t *ni;
- list_for_each (tmp, &the_lnet.ln_nis) {
- ni = list_entry(tmp, lnet_ni_t, ni_list);
+ 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);
lnet_count_acceptor_nis (void)
{
/* Return the # of NIs that need the acceptor. */
- int count = 0;
+ int count = 0;
#if defined(__KERNEL__) || defined(HAVE_LIBPTHREAD)
- struct list_head *tmp;
- lnet_ni_t *ni;
+ cfs_list_t *tmp;
+ lnet_ni_t *ni;
LNET_LOCK();
- list_for_each (tmp, &the_lnet.ln_nis) {
- ni = list_entry(tmp, lnet_ni_t, ni_list);
+ 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)
count++;
/* All quiet on the API front */
LASSERT (!the_lnet.ln_shutdown);
LASSERT (the_lnet.ln_refcount == 0);
- LASSERT (list_empty(&the_lnet.ln_zombie_nis));
+ LASSERT (cfs_list_empty(&the_lnet.ln_zombie_nis));
LASSERT (the_lnet.ln_nzombie_nis == 0);
- LASSERT (list_empty(&the_lnet.ln_remote_nets));
+ LASSERT (cfs_list_empty(&the_lnet.ln_remote_nets));
LNET_LOCK();
the_lnet.ln_shutdown = 1; /* flag shutdown */
/* Unlink NIs from the global table */
- while (!list_empty(&the_lnet.ln_nis)) {
- ni = list_entry(the_lnet.ln_nis.next,
- lnet_ni_t, ni_list);
- list_del (&ni->ni_list);
+ while (!cfs_list_empty(&the_lnet.ln_nis)) {
+ ni = cfs_list_entry(the_lnet.ln_nis.next,
+ lnet_ni_t, ni_list);
+ cfs_list_del (&ni->ni_list);
the_lnet.ln_nzombie_nis++;
- lnet_ni_decref_locked(ni); /* drop apini's ref */
+ lnet_ni_decref_locked(ni); /* drop ln_nis' ref */
}
/* Drop the cached eqwait NI. */
- if (the_lnet.ln_eqwaitni != NULL) {
- lnet_ni_decref_locked(the_lnet.ln_eqwaitni);
- the_lnet.ln_eqwaitni = NULL;
- }
+ if (the_lnet.ln_eq_waitni != NULL) {
+ lnet_ni_decref_locked(the_lnet.ln_eq_waitni);
+ the_lnet.ln_eq_waitni = NULL;
+ }
/* Drop the cached loopback NI. */
if (the_lnet.ln_loni != NULL) {
/* Clear the peer table and wait for all peers to go (they hold refs on
* their NIs) */
- lnet_clear_peer_table();
+ lnet_peer_table_cleanup();
LNET_LOCK();
- /* Now wait for the NI's I just nuked to show up on apini_zombie_nis
+ /* 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 (the_lnet.ln_nzombie_nis != 0) {
- while (list_empty(&the_lnet.ln_zombie_nis)) {
+ while (cfs_list_empty(&the_lnet.ln_zombie_nis)) {
LNET_UNLOCK();
++i;
if ((i & (-i)) == i)
LNET_LOCK();
}
- ni = list_entry(the_lnet.ln_zombie_nis.next,
- lnet_ni_t, ni_list);
- list_del(&ni->ni_list);
+ ni = cfs_list_entry(the_lnet.ln_zombie_nis.next,
+ lnet_ni_t, ni_list);
+ cfs_list_del(&ni->ni_list);
ni->ni_lnd->lnd_refcount--;
LNET_UNLOCK();
islo = ni->ni_lnd->lnd_type == LOLND;
- LASSERT (!in_interrupt ());
+ LASSERT (!cfs_in_interrupt ());
(ni->ni_lnd->lnd_shutdown)(ni);
/* can't deref lnd anymore now; it might have unregistered
{
lnd_t *lnd;
lnet_ni_t *ni;
- struct list_head nilist;
+ cfs_list_t nilist;
int rc = 0;
int lnd_type;
int nicount = 0;
if (rc != 0)
goto failed;
- while (!list_empty(&nilist)) {
- ni = list_entry(nilist.next, lnet_ni_t, ni_list);
+ 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));
- LNET_MUTEX_DOWN(&the_lnet.ln_lnd_mutex);
+ 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_UP(&the_lnet.ln_lnd_mutex);
- rc = request_module("%s", libcfs_lnd2modname(lnd_type));
- LNET_MUTEX_DOWN(&the_lnet.ln_lnd_mutex);
+ 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_UP(&the_lnet.ln_lnd_mutex);
+ 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);
-#ifndef CONFIG_KMOD
+#ifndef HAVE_MODULE_LOADING_SUPPORT
LCONSOLE_ERROR_MSG(0x104, "Your kernel must be "
- "compiled with CONFIG_KMOD set for "
- "automatic module loading.");
+ "compiled with kernel module "
+ "loading support.");
#endif
goto failed;
}
}
#else
if (lnd == NULL) {
- LNET_MUTEX_UP(&the_lnet.ln_lnd_mutex);
+ LNET_MUTEX_UNLOCK(&the_lnet.ln_lnd_mutex);
CERROR("LND %s not supported\n",
libcfs_lnd2str(lnd_type));
goto failed;
rc = (lnd->lnd_startup)(ni);
- LNET_MUTEX_UP(&the_lnet.ln_lnd_mutex);
+ LNET_MUTEX_UNLOCK(&the_lnet.ln_lnd_mutex);
if (rc != 0) {
LCONSOLE_ERROR_MSG(0x105, "Error %d starting up LNI %s"
LASSERT (ni->ni_peertimeout <= 0 || lnd->lnd_query != NULL);
- list_del(&ni->ni_list);
+ cfs_list_del(&ni->ni_list);
LNET_LOCK();
- list_add_tail(&ni->ni_list, &the_lnet.ln_nis);
+ cfs_list_add_tail(&ni->ni_list, &the_lnet.ln_nis);
LNET_UNLOCK();
if (lnd->lnd_type == LOLND) {
#ifndef __KERNEL__
if (lnd->lnd_wait != NULL) {
- if (the_lnet.ln_eqwaitni == NULL) {
- lnet_ni_addref(ni);
- the_lnet.ln_eqwaitni = ni;
- }
+ 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 "
nicount++;
}
- if (the_lnet.ln_eqwaitni != NULL && nicount > 1) {
- lnd_type = the_lnet.ln_eqwaitni->ni_lnd->lnd_type;
+ 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));
failed:
lnet_shutdown_lndnis();
- while (!list_empty(&nilist)) {
- ni = list_entry(nilist.next, lnet_ni_t, ni_list);
- list_del(&ni->ni_list);
+ while (!cfs_list_empty(&nilist)) {
+ ni = cfs_list_entry(nilist.next, lnet_ni_t, ni_list);
+ cfs_list_del(&ni->ni_list);
LIBCFS_FREE(ni, sizeof(*ni));
}
return -ENETDOWN;
}
+/**
+ * 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)
{
+ int rc;
+
lnet_assert_wire_constants ();
LASSERT (!the_lnet.ln_init);
memset(&the_lnet, 0, sizeof(the_lnet));
- lnet_init_locks();
+ /* 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 -1;
+ }
+
+ 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 -1;
+ }
+
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_zombie_rcd);
+ CFS_INIT_LIST_HEAD(&the_lnet.ln_rcd_zombie);
+ CFS_INIT_LIST_HEAD(&the_lnet.ln_rcd_deathrow);
#ifdef __KERNEL__
/* All LNDs apart from the LOLND are in separate modules. They
return 0;
}
+/**
+ * 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)
{
- LASSERT (the_lnet.ln_init);
- LASSERT (the_lnet.ln_refcount == 0);
+ LASSERT(the_lnet.ln_init);
+ 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_fini_locks();
+ 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();
- the_lnet.ln_init = 0;
+ the_lnet.ln_init = 0;
}
+/**
+ * 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)
{
int im_a_router = 0;
int rc;
- LNET_MUTEX_DOWN(&the_lnet.ln_api_mutex);
+ LNET_MUTEX_LOCK(&the_lnet.ln_api_mutex);
LASSERT (the_lnet.ln_init);
CDEBUG(D_OTHER, "refs %d\n", the_lnet.ln_refcount);
if (rc != 0)
goto failed2;
- rc = lnet_alloc_rtrpools(im_a_router);
+ rc = lnet_rtrpools_alloc(im_a_router);
if (rc != 0)
goto failed2;
/* 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 */
+ * lnet_router_checker -> lnet_update_ni_status_locked */
rc = lnet_ping_target_init();
if (rc != 0)
goto failed3;
failed0:
LASSERT (rc < 0);
out:
- LNET_MUTEX_UP(&the_lnet.ln_api_mutex);
+ LNET_MUTEX_UNLOCK(&the_lnet.ln_api_mutex);
return rc;
}
+/**
+ * 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()
{
- LNET_MUTEX_DOWN(&the_lnet.ln_api_mutex);
+ LNET_MUTEX_LOCK(&the_lnet.ln_api_mutex);
LASSERT (the_lnet.ln_init);
LASSERT (the_lnet.ln_refcount > 0);
lnet_unprepare();
}
- LNET_MUTEX_UP(&the_lnet.ln_api_mutex);
+ LNET_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)
{
/* not reached */
}
+/**
+ * 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().
+ *
+ * \param index Index of the interface to look up.
+ * \param id On successful return, this location will hold the
+ * lnet_process_id_t ID of the interface.
+ *
+ * \retval 0 If an interface exists at \a index.
+ * \retval -ENOENT If no interface has been found.
+ */
int
LNetGetId(unsigned int index, lnet_process_id_t *id)
{
lnet_ni_t *ni;
- struct list_head *tmp;
+ cfs_list_t *tmp;
int rc = -ENOENT;
LASSERT (the_lnet.ln_init);
LNET_LOCK();
- list_for_each(tmp, &the_lnet.ln_nis) {
+ cfs_list_for_each(tmp, &the_lnet.ln_nis) {
if (index-- != 0)
continue;
- ni = list_entry(tmp, lnet_ni_t, ni_list);
+ ni = cfs_list_entry(tmp, lnet_ni_t, ni_list);
id->nid = ni->ni_nid;
id->pid = the_lnet.ln_pid;
return rc;
}
+/**
+ * Print a string representation of handle \a h into buffer \a str of
+ * \a len bytes.
+ */
void
LNetSnprintHandle(char *str, int len, lnet_handle_any_t h)
{
LNET_LOCK();
- list_for_each_entry (ni, &the_lnet.ln_nis, ni_list) {
+ cfs_list_for_each_entry (ni, &the_lnet.ln_nis, ni_list) {
ni->ni_status = NULL;
}
tmpid.pid = info->pi_pid;
tmpid.nid = info->pi_ni[i].ns_nid;
#ifdef __KERNEL__
- if (copy_to_user(&ids[i], &tmpid, sizeof(tmpid)))
+ if (cfs_copy_to_user(&ids[i], &tmpid, sizeof(tmpid)))
goto out_1;
#else
ids[i] = tmpid;