*
* 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, 2015, Intel Corporation.
+ * Copyright (c) 2011, 2016, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define DEBUG_SUBSYSTEM S_LNET
#include <linux/log2.h>
+#include <linux/ktime.h>
+#include <linux/moduleparam.h>
+
#include <lnet/lib-lnet.h>
#define D_LNI D_CONSOLE
-lnet_t the_lnet; /* THE state of the network */
+/*
+ * initialize ln_api_mutex statically, since it needs to be used in
+ * discovery_set callback. That module parameter callback can be called
+ * before module init completes. The mutex needs to be ready for use then.
+ */
+struct lnet the_lnet = {
+ .ln_api_mutex = __MUTEX_INITIALIZER(the_lnet.ln_api_mutex),
+}; /* THE state of the network */
EXPORT_SYMBOL(the_lnet);
static char *ip2nets = "";
module_param(rnet_htable_size, int, 0444);
MODULE_PARM_DESC(rnet_htable_size, "size of remote network hash table");
-static int lnet_ping(lnet_process_id_t id, int timeout_ms,
- lnet_process_id_t __user *ids, int n_ids);
+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");
+
+unsigned int lnet_numa_range = 0;
+module_param(lnet_numa_range, uint, 0444);
+MODULE_PARM_DESC(lnet_numa_range,
+ "NUMA range to consider during Multi-Rail selection");
+
+static int lnet_interfaces_max = LNET_INTERFACES_MAX_DEFAULT;
+static int intf_max_set(const char *val, struct kernel_param *kp);
+module_param_call(lnet_interfaces_max, intf_max_set, param_get_int,
+ &lnet_interfaces_max, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(lnet_interfaces_max,
+ "Maximum number of interfaces in a node.");
+
+unsigned lnet_peer_discovery_disabled = 0;
+static int discovery_set(const char *val, struct kernel_param *kp);
+module_param_call(lnet_peer_discovery_disabled, discovery_set, param_get_int,
+ &lnet_peer_discovery_disabled, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(lnet_peer_discovery_disabled,
+ "Set to 1 to disable peer discovery on this node.");
+
+/*
+ * 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(struct lnet_process_id id, signed long timeout,
+ struct lnet_process_id __user *ids, int n_ids);
+
+static int lnet_discover(lnet_process_id_t id, __u32 force,
+ lnet_process_id_t __user *ids, int n_ids);
+
+static int
+discovery_set(const char *val, struct kernel_param *kp)
+{
+ int rc;
+ unsigned *discovery = (unsigned *)kp->arg;
+ unsigned long value;
+ struct lnet_ping_buffer *pbuf;
+
+ rc = kstrtoul(val, 0, &value);
+ if (rc) {
+ CERROR("Invalid module parameter value for 'lnet_peer_discovery_disabled'\n");
+ return rc;
+ }
+
+ value = (value) ? 1 : 0;
+
+ /*
+ * The purpose of locking the api_mutex here is to ensure that
+ * the correct value ends up stored properly.
+ */
+ mutex_lock(&the_lnet.ln_api_mutex);
+
+ if (value == *discovery) {
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return 0;
+ }
+
+ *discovery = value;
+
+ if (the_lnet.ln_state != LNET_STATE_RUNNING) {
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return 0;
+ }
+
+ /* tell peers that discovery setting has changed */
+ lnet_net_lock(LNET_LOCK_EX);
+ pbuf = the_lnet.ln_ping_target;
+ if (value)
+ pbuf->pb_info.pi_features &= ~LNET_PING_FEAT_DISCOVERY;
+ else
+ pbuf->pb_info.pi_features |= LNET_PING_FEAT_DISCOVERY;
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ lnet_push_update_to_peers(1);
+
+ mutex_unlock(&the_lnet.ln_api_mutex);
+
+ return 0;
+}
+
+static int
+intf_max_set(const char *val, struct kernel_param *kp)
+{
+ int value, rc;
+
+ rc = kstrtoint(val, 0, &value);
+ if (rc) {
+ CERROR("Invalid module parameter value for 'lnet_interfaces_max'\n");
+ return rc;
+ }
+
+ if (value < LNET_INTERFACES_MIN) {
+ CWARN("max interfaces provided are too small, setting to %d\n",
+ LNET_INTERFACES_MIN);
+ value = LNET_INTERFACES_MIN;
+ }
+
+ *(int *)kp->arg = value;
+
+ return 0;
+}
static char *
lnet_get_routes(void)
{
- return routes;
+ return routes;
}
static char *
lnet_get_networks(void)
{
char *nets;
- int rc;
+ int rc;
if (*networks != 0 && *ip2nets != 0) {
LCONSOLE_ERROR_MSG(0x101, "Please specify EITHER 'networks' or "
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);
}
static void
{
}
+struct kmem_cache *lnet_mes_cachep; /* MEs kmem_cache */
+struct kmem_cache *lnet_small_mds_cachep; /* <= LNET_SMALL_MD_SIZE bytes
+ * MDs kmem_cache */
+
+static int
+lnet_descriptor_setup(void)
+{
+ /* 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(struct lnet_me),
+ 0, 0, NULL);
+ if (!lnet_mes_cachep)
+ return -ENOMEM;
+
+ lnet_small_mds_cachep = kmem_cache_create("lnet_small_MDs",
+ LNET_SMALL_MD_SIZE, 0, 0,
+ NULL);
+ if (!lnet_small_mds_cachep)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static void
+lnet_descriptor_cleanup(void)
+{
+
+ if (lnet_small_mds_cachep) {
+ kmem_cache_destroy(lnet_small_mds_cachep);
+ lnet_small_mds_cachep = NULL;
+ }
+
+ if (lnet_mes_cachep) {
+ kmem_cache_destroy(lnet_mes_cachep);
+ lnet_mes_cachep = NULL;
+ }
+}
+
static int
lnet_create_remote_nets_table(void)
{
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 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);
-}
-
-static lnd_t *lnet_find_lnd_by_type(__u32 type)
-{
- lnd_t *lnd;
+ /* 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 struct lnet_magicversion */
+ CLASSERT((int)sizeof(struct lnet_magicversion) == 8);
+ CLASSERT((int)offsetof(struct lnet_magicversion, magic) == 0);
+ CLASSERT((int)sizeof(((struct lnet_magicversion *)0)->magic) == 4);
+ CLASSERT((int)offsetof(struct lnet_magicversion, version_major) == 4);
+ CLASSERT((int)sizeof(((struct lnet_magicversion *)0)->version_major) == 2);
+ CLASSERT((int)offsetof(struct lnet_magicversion, version_minor) == 6);
+ CLASSERT((int)sizeof(((struct lnet_magicversion *)0)->version_minor) == 2);
+
+ /* Checks for struct struct lnet_hdr */
+ CLASSERT((int)sizeof(struct lnet_hdr) == 72);
+ CLASSERT((int)offsetof(struct lnet_hdr, dest_nid) == 0);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->dest_nid) == 8);
+ CLASSERT((int)offsetof(struct lnet_hdr, src_nid) == 8);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->src_nid) == 8);
+ CLASSERT((int)offsetof(struct lnet_hdr, dest_pid) == 16);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->dest_pid) == 4);
+ CLASSERT((int)offsetof(struct lnet_hdr, src_pid) == 20);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->src_pid) == 4);
+ CLASSERT((int)offsetof(struct lnet_hdr, type) == 24);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->type) == 4);
+ CLASSERT((int)offsetof(struct lnet_hdr, payload_length) == 28);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->payload_length) == 4);
+ CLASSERT((int)offsetof(struct lnet_hdr, msg) == 32);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg) == 40);
+
+ /* Ack */
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.ack.dst_wmd) == 32);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.ack.dst_wmd) == 16);
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.ack.match_bits) == 48);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.ack.match_bits) == 8);
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.ack.mlength) == 56);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.ack.mlength) == 4);
+
+ /* Put */
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.put.ack_wmd) == 32);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.put.ack_wmd) == 16);
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.put.match_bits) == 48);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.put.match_bits) == 8);
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.put.hdr_data) == 56);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.put.hdr_data) == 8);
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.put.ptl_index) == 64);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.put.ptl_index) == 4);
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.put.offset) == 68);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.put.offset) == 4);
+
+ /* Get */
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.get.return_wmd) == 32);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.get.return_wmd) == 16);
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.get.match_bits) == 48);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.get.match_bits) == 8);
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.get.ptl_index) == 56);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.get.ptl_index) == 4);
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.get.src_offset) == 60);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.get.src_offset) == 4);
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.get.sink_length) == 64);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.get.sink_length) == 4);
+
+ /* Reply */
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.reply.dst_wmd) == 32);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.reply.dst_wmd) == 16);
+
+ /* Hello */
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.hello.incarnation) == 32);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.hello.incarnation) == 8);
+ CLASSERT((int)offsetof(struct lnet_hdr, msg.hello.type) == 40);
+ CLASSERT((int)sizeof(((struct lnet_hdr *)0)->msg.hello.type) == 4);
+
+ /* Checks for struct lnet_ni_status and related constants */
+ CLASSERT(LNET_NI_STATUS_INVALID == 0x00000000);
+ CLASSERT(LNET_NI_STATUS_UP == 0x15aac0de);
+ CLASSERT(LNET_NI_STATUS_DOWN == 0xdeadface);
+
+ /* Checks for struct lnet_ni_status */
+ CLASSERT((int)sizeof(struct lnet_ni_status) == 16);
+ CLASSERT((int)offsetof(struct lnet_ni_status, ns_nid) == 0);
+ CLASSERT((int)sizeof(((struct lnet_ni_status *)0)->ns_nid) == 8);
+ CLASSERT((int)offsetof(struct lnet_ni_status, ns_status) == 8);
+ CLASSERT((int)sizeof(((struct lnet_ni_status *)0)->ns_status) == 4);
+ CLASSERT((int)offsetof(struct lnet_ni_status, ns_unused) == 12);
+ CLASSERT((int)sizeof(((struct lnet_ni_status *)0)->ns_unused) == 4);
+
+ /* Checks for struct lnet_ping_info and related constants */
+ CLASSERT(LNET_PROTO_PING_MAGIC == 0x70696E67);
+ CLASSERT(LNET_PING_FEAT_INVAL == 0);
+ CLASSERT(LNET_PING_FEAT_BASE == 1);
+ CLASSERT(LNET_PING_FEAT_NI_STATUS == 2);
+ CLASSERT(LNET_PING_FEAT_RTE_DISABLED == 4);
+ CLASSERT(LNET_PING_FEAT_MULTI_RAIL == 8);
+ CLASSERT(LNET_PING_FEAT_DISCOVERY == 16);
+ CLASSERT(LNET_PING_FEAT_BITS == 31);
+
+ /* Checks for struct lnet_ping_info */
+ CLASSERT((int)sizeof(struct lnet_ping_info) == 16);
+ CLASSERT((int)offsetof(struct lnet_ping_info, pi_magic) == 0);
+ CLASSERT((int)sizeof(((struct lnet_ping_info *)0)->pi_magic) == 4);
+ CLASSERT((int)offsetof(struct lnet_ping_info, pi_features) == 4);
+ CLASSERT((int)sizeof(((struct lnet_ping_info *)0)->pi_features) == 4);
+ CLASSERT((int)offsetof(struct lnet_ping_info, pi_pid) == 8);
+ CLASSERT((int)sizeof(((struct lnet_ping_info *)0)->pi_pid) == 4);
+ CLASSERT((int)offsetof(struct lnet_ping_info, pi_nnis) == 12);
+ CLASSERT((int)sizeof(((struct lnet_ping_info *)0)->pi_nnis) == 4);
+ CLASSERT((int)offsetof(struct lnet_ping_info, pi_ni) == 16);
+ CLASSERT((int)sizeof(((struct lnet_ping_info *)0)->pi_ni) == 0);
+}
+
+static struct lnet_lnd *lnet_find_lnd_by_type(__u32 type)
+{
+ struct lnet_lnd *lnd;
struct list_head *tmp;
/* holding lnd mutex */
list_for_each(tmp, &the_lnet.ln_lnds) {
- lnd = list_entry(tmp, lnd_t, lnd_list);
+ lnd = list_entry(tmp, struct lnet_lnd, lnd_list);
if (lnd->lnd_type == type)
return lnd;
}
void
-lnet_register_lnd (lnd_t *lnd)
+lnet_register_lnd(struct lnet_lnd *lnd)
{
mutex_lock(&the_lnet.ln_lnd_mutex);
EXPORT_SYMBOL(lnet_register_lnd);
void
-lnet_unregister_lnd (lnd_t *lnd)
+lnet_unregister_lnd(struct lnet_lnd *lnd)
{
mutex_lock(&the_lnet.ln_lnd_mutex);
EXPORT_SYMBOL(lnet_unregister_lnd);
void
-lnet_counters_get(lnet_counters_t *counters)
+lnet_counters_get(struct lnet_counters *counters)
{
- lnet_counters_t *ctr;
+ struct lnet_counters *ctr;
int i;
memset(counters, 0, sizeof(*counters));
void
lnet_counters_reset(void)
{
- lnet_counters_t *counters;
+ struct lnet_counters *counters;
int i;
lnet_net_lock(LNET_LOCK_EX);
cfs_percpt_for_each(counters, i, the_lnet.ln_counters)
- memset(counters, 0, sizeof(lnet_counters_t));
+ memset(counters, 0, sizeof(struct lnet_counters));
lnet_net_unlock(LNET_LOCK_EX);
}
-static __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;
- do_gettimeofday(&tv);
- cookie = tv.tv_sec;
- cookie *= 1000000;
- cookie += tv.tv_usec;
- return cookie;
-}
-
static char *
lnet_res_type2str(int type)
{
list_del_init(e);
if (rec->rec_type == LNET_COOKIE_TYPE_EQ) {
- lnet_eq_free(list_entry(e, lnet_eq_t, eq_list));
+ lnet_eq_free(list_entry(e, struct lnet_eq, eq_list));
} else if (rec->rec_type == LNET_COOKIE_TYPE_MD) {
- lnet_md_free(list_entry(e, lnet_libmd_t, md_list));
+ lnet_md_free(list_entry(e, struct lnet_libmd, md_list));
} else { /* NB: Active MEs should be attached on portals */
LBUG();
return recs;
}
-lnet_libhandle_t *
+struct lnet_libhandle *
lnet_res_lh_lookup(struct lnet_res_container *rec, __u64 cookie)
{
/* ALWAYS called with lnet_res_lock held */
struct list_head *head;
- lnet_libhandle_t *lh;
+ struct lnet_libhandle *lh;
unsigned int hash;
if ((cookie & LNET_COOKIE_MASK) != rec->rec_type)
}
void
-lnet_res_lh_initialize(struct lnet_res_container *rec, lnet_libhandle_t *lh)
+lnet_res_lh_initialize(struct lnet_res_container *rec,
+ struct lnet_libhandle *lh)
{
/* ALWAYS called with lnet_res_lock held */
unsigned int ibits = LNET_COOKIE_TYPE_BITS + LNET_CPT_BITS;
the_lnet.ln_pid = requested_pid;
INIT_LIST_HEAD(&the_lnet.ln_test_peers);
- INIT_LIST_HEAD(&the_lnet.ln_nis);
- INIT_LIST_HEAD(&the_lnet.ln_nis_cpt);
- INIT_LIST_HEAD(&the_lnet.ln_nis_zombie);
+ 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);
+ INIT_LIST_HEAD(&the_lnet.ln_dc_request);
+ INIT_LIST_HEAD(&the_lnet.ln_dc_working);
+ INIT_LIST_HEAD(&the_lnet.ln_dc_expired);
+ init_waitqueue_head(&the_lnet.ln_dc_waitq);
+
+ 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));
+ sizeof(struct lnet_counters));
if (the_lnet.ln_counters == NULL) {
CERROR("Failed to allocate counters for LNet\n");
rc = -ENOMEM;
LASSERT(the_lnet.ln_refcount == 0);
LASSERT(list_empty(&the_lnet.ln_test_peers));
- LASSERT(list_empty(&the_lnet.ln_nis));
- LASSERT(list_empty(&the_lnet.ln_nis_cpt));
- LASSERT(list_empty(&the_lnet.ln_nis_zombie));
+ 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_peer_uninit();
lnet_rtrpools_free(0);
if (the_lnet.ln_counters != NULL) {
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)
+struct lnet_ni *
+lnet_net2ni_locked(__u32 net_id, int cpt)
{
- struct list_head *tmp;
- lnet_ni_t *ni;
+ struct lnet_ni *ni;
+ struct lnet_net *net;
LASSERT(cpt != LNET_LOCK_EX);
- list_for_each(tmp, &the_lnet.ln_nis) {
- ni = 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;
}
}
return NULL;
}
-lnet_ni_t *
-lnet_net2ni(__u32 net)
+struct lnet_ni *
+lnet_net2ni_addref(__u32 net)
{
- lnet_ni_t *ni;
+ struct lnet_ni *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;
}
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 (!list_empty(&the_lnet.ln_nis_cpt)) {
- 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 (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 *
+struct lnet_ni *
lnet_nid2ni_locked(lnet_nid_t nid, int cpt)
{
+ struct lnet_net *net;
struct lnet_ni *ni;
- struct list_head *tmp;
LASSERT(cpt != LNET_LOCK_EX);
- list_for_each(tmp, &the_lnet.ln_nis) {
- ni = 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;
}
+struct lnet_ni *
+lnet_nid2ni_addref(lnet_nid_t nid)
+{
+ struct lnet_ni *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;
- struct list_head *tmp;
- struct lnet_ni *ni;
+ struct lnet_net *net;
int cpt;
cpt = lnet_net_lock_current();
- list_for_each(tmp, &the_lnet.ln_nis) {
- ni = 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++;
}
return count;
}
-static lnet_ping_info_t *
-lnet_ping_info_create(int num_ni)
+struct lnet_ping_buffer *
+lnet_ping_buffer_alloc(int nnis, gfp_t gfp)
+{
+ struct lnet_ping_buffer *pbuf;
+
+ LIBCFS_ALLOC_GFP(pbuf, LNET_PING_BUFFER_SIZE(nnis), gfp);
+ if (pbuf) {
+ pbuf->pb_nnis = nnis;
+ atomic_set(&pbuf->pb_refcnt, 1);
+ }
+
+ return pbuf;
+}
+
+void
+lnet_ping_buffer_free(struct lnet_ping_buffer *pbuf)
+{
+ LASSERT(lnet_ping_buffer_numref(pbuf) == 0);
+ LIBCFS_FREE(pbuf, LNET_PING_BUFFER_SIZE(pbuf->pb_nnis));
+}
+
+static struct lnet_ping_buffer *
+lnet_ping_target_create(int nnis)
{
- lnet_ping_info_t *ping_info;
- unsigned int infosz;
+ struct lnet_ping_buffer *pbuf;
- infosz = offsetof(lnet_ping_info_t, pi_ni[num_ni]);
- LIBCFS_ALLOC(ping_info, infosz);
- if (ping_info == NULL) {
- CERROR("Can't allocate ping info[%d]\n", num_ni);
+ pbuf = lnet_ping_buffer_alloc(nnis, GFP_NOFS);
+ if (pbuf == NULL) {
+ CERROR("Can't allocate ping source [%d]\n", nnis);
return NULL;
}
- 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;
+ pbuf->pb_info.pi_nnis = nnis;
+ pbuf->pb_info.pi_pid = the_lnet.ln_pid;
+ pbuf->pb_info.pi_magic = LNET_PROTO_PING_MAGIC;
+ pbuf->pb_info.pi_features =
+ LNET_PING_FEAT_NI_STATUS | LNET_PING_FEAT_MULTI_RAIL;
+
+ return pbuf;
+}
+
+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;
+}
+
+static inline int
+lnet_get_net_ni_count_pre(struct lnet_net *net)
+{
+ struct lnet_ni *ni;
+ int count = 0;
- return ping_info;
+ list_for_each_entry(ni, &net->net_ni_added, ni_netlist)
+ count++;
+
+ return count;
}
static inline int
lnet_get_ni_count(void)
{
- struct lnet_ni *ni;
- int count = 0;
+ struct lnet_ni *ni;
+ struct lnet_net *net;
+ int count = 0;
lnet_net_lock(0);
- list_for_each_entry(ni, &the_lnet.ln_nis, ni_list)
- count++;
+ list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
+ list_for_each_entry(ni, &net->net_ni_list, ni_netlist)
+ count++;
+ }
lnet_net_unlock(0);
return count;
}
-static inline void
-lnet_ping_info_free(lnet_ping_info_t *pinfo)
+int
+lnet_ping_info_validate(struct lnet_ping_info *pinfo)
{
- LIBCFS_FREE(pinfo,
- offsetof(lnet_ping_info_t,
- pi_ni[pinfo->pi_nnis]));
+ if (!pinfo)
+ return -EINVAL;
+ if (pinfo->pi_magic != LNET_PROTO_PING_MAGIC)
+ return -EPROTO;
+ if (!(pinfo->pi_features & LNET_PING_FEAT_NI_STATUS))
+ return -EPROTO;
+ /* Loopback is guaranteed to be present */
+ if (pinfo->pi_nnis < 1 || pinfo->pi_nnis > lnet_interfaces_max)
+ return -ERANGE;
+ if (LNET_NETTYP(LNET_NIDNET(LNET_PING_INFO_LONI(pinfo))) != LOLND)
+ return -EPROTO;
+ return 0;
}
static void
-lnet_ping_info_destroy(void)
+lnet_ping_target_destroy(void)
{
+ struct lnet_net *net;
struct lnet_ni *ni;
lnet_net_lock(LNET_LOCK_EX);
- list_for_each_entry(ni, &the_lnet.ln_nis, ni_list) {
- lnet_ni_lock(ni);
- ni->ni_status = NULL;
- lnet_ni_unlock(ni);
+ 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);
+ }
}
- lnet_ping_info_free(the_lnet.ln_ping_info);
- the_lnet.ln_ping_info = NULL;
+ lnet_ping_buffer_decref(the_lnet.ln_ping_target);
+ the_lnet.ln_ping_target = NULL;
lnet_net_unlock(LNET_LOCK_EX);
}
static void
-lnet_ping_event_handler(lnet_event_t *event)
+lnet_ping_target_event_handler(struct lnet_event *event)
{
- lnet_ping_info_t *pinfo = event->md.user_ptr;
+ struct lnet_ping_buffer *pbuf = event->md.user_ptr;
if (event->unlinked)
- pinfo->pi_features = LNET_PING_FEAT_INVAL;
+ lnet_ping_buffer_decref(pbuf);
}
static int
-lnet_ping_info_setup(lnet_ping_info_t **ppinfo, lnet_handle_md_t *md_handle,
- int ni_count, bool set_eq)
+lnet_ping_target_setup(struct lnet_ping_buffer **ppbuf,
+ struct lnet_handle_md *ping_mdh,
+ 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;
+ struct lnet_process_id id = {
+ .nid = LNET_NID_ANY,
+ .pid = LNET_PID_ANY
+ };
+ struct lnet_handle_me me_handle;
+ struct lnet_md md = { NULL };
+ int rc, rc2;
if (set_eq) {
- rc = LNetEQAlloc(0, lnet_ping_event_handler,
+ rc = LNetEQAlloc(0, lnet_ping_target_event_handler,
&the_lnet.ln_ping_target_eq);
if (rc != 0) {
- CERROR("Can't allocate ping EQ: %d\n", rc);
+ CERROR("Can't allocate ping buffer EQ: %d\n", rc);
return rc;
}
}
- *ppinfo = lnet_ping_info_create(ni_count);
- if (*ppinfo == NULL) {
+ *ppbuf = lnet_ping_target_create(ni_count);
+ if (*ppbuf == NULL) {
rc = -ENOMEM;
- goto failed_0;
+ goto fail_free_eq;
}
+ /* Ping target ME/MD */
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;
+ CERROR("Can't create ping target ME: %d\n", rc);
+ goto fail_decref_ping_buffer;
}
/* initialize md content */
- md.start = *ppinfo;
- md.length = offsetof(lnet_ping_info_t,
- pi_ni[(*ppinfo)->pi_nnis]);
+ md.start = &(*ppbuf)->pb_info;
+ md.length = LNET_PING_INFO_SIZE((*ppbuf)->pb_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;
+ md.user_ptr = *ppbuf;
- rc = LNetMDAttach(me_handle, md, LNET_RETAIN, md_handle);
+ rc = LNetMDAttach(me_handle, md, LNET_RETAIN, ping_mdh);
if (rc != 0) {
- CERROR("Can't attach ping MD: %d\n", rc);
- goto failed_2;
+ CERROR("Can't attach ping target MD: %d\n", rc);
+ goto fail_unlink_ping_me;
}
+ lnet_ping_buffer_addref(*ppbuf);
return 0;
-failed_2:
+fail_unlink_ping_me:
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);
+fail_decref_ping_buffer:
+ LASSERT(lnet_ping_buffer_numref(*ppbuf) == 1);
+ lnet_ping_buffer_decref(*ppbuf);
+ *ppbuf = NULL;
+fail_free_eq:
+ if (set_eq) {
+ rc2 = LNetEQFree(the_lnet.ln_ping_target_eq);
+ LASSERT(rc2 == 0);
+ }
return rc;
}
static void
-lnet_ping_md_unlink(lnet_ping_info_t *pinfo, lnet_handle_md_t *md_handle)
+lnet_ping_md_unlink(struct lnet_ping_buffer *pbuf,
+ struct lnet_handle_md *ping_mdh)
{
sigset_t blocked = cfs_block_allsigs();
- LNetMDUnlink(*md_handle);
- LNetInvalidateHandle(md_handle);
+ LNetMDUnlink(*ping_mdh);
+ LNetInvalidateMDHandle(ping_mdh);
- /* 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");
+ /* NB the MD could be busy; this just starts the unlink */
+ while (lnet_ping_buffer_numref(pbuf) > 1) {
+ CDEBUG(D_NET, "Still waiting for ping data MD to unlink\n");
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(cfs_time_seconds(1));
}
}
static void
-lnet_ping_info_install_locked(lnet_ping_info_t *ping_info)
+lnet_ping_target_install_locked(struct lnet_ping_buffer *pbuf)
{
+ struct lnet_ni *ni;
+ struct lnet_net *net;
+ struct lnet_ni_status *ns;
int i;
- lnet_ni_t *ni;
- lnet_ni_status_t *ns;
+ int rc;
i = 0;
- list_for_each_entry(ni, &the_lnet.ln_nis, ni_list) {
- LASSERT(i < ping_info->pi_nnis);
+ list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
+ list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
+ LASSERT(i < pbuf->pb_nnis);
- ns = &ping_info->pi_ni[i];
+ ns = &pbuf->pb_info.pi_ni[i];
- ns->ns_nid = ni->ni_nid;
+ 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);
+ 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++;
+ i++;
+ }
+ }
+ /*
+ * We (ab)use the ns_status of the loopback interface to
+ * transmit the sequence number. The first interface listed
+ * must be the loopback interface.
+ */
+ rc = lnet_ping_info_validate(&pbuf->pb_info);
+ if (rc) {
+ LCONSOLE_EMERG("Invalid ping target: %d\n", rc);
+ LBUG();
}
+ LNET_PING_BUFFER_SEQNO(pbuf) =
+ atomic_inc_return(&the_lnet.ln_ping_target_seqno);
}
static void
-lnet_ping_target_update(lnet_ping_info_t *pinfo, lnet_handle_md_t md_handle)
+lnet_ping_target_update(struct lnet_ping_buffer *pbuf,
+ struct lnet_handle_md ping_mdh)
{
- lnet_ping_info_t *old_pinfo = NULL;
- lnet_handle_md_t old_md;
+ struct lnet_ping_buffer *old_pbuf = NULL;
+ struct lnet_handle_md old_ping_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);
+ pbuf->pb_info.pi_features |= LNET_PING_FEAT_RTE_DISABLED;
+ if (!lnet_peer_discovery_disabled)
+ pbuf->pb_info.pi_features |= LNET_PING_FEAT_DISCOVERY;
+
+ /* Ensure only known feature bits have been set. */
+ LASSERT(pbuf->pb_info.pi_features & LNET_PING_FEAT_BITS);
+ LASSERT(!(pbuf->pb_info.pi_features & ~LNET_PING_FEAT_BITS));
- if (the_lnet.ln_ping_info != NULL) {
- old_pinfo = the_lnet.ln_ping_info;
- old_md = the_lnet.ln_ping_target_md;
+ lnet_ping_target_install_locked(pbuf);
+
+ if (the_lnet.ln_ping_target) {
+ old_pbuf = the_lnet.ln_ping_target;
+ old_ping_md = the_lnet.ln_ping_target_md;
}
- the_lnet.ln_ping_target_md = md_handle;
- the_lnet.ln_ping_info = pinfo;
+ the_lnet.ln_ping_target_md = ping_mdh;
+ the_lnet.ln_ping_target = pbuf;
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);
+ if (old_pbuf) {
+ /* unlink and free the old ping info */
+ lnet_ping_md_unlink(old_pbuf, &old_ping_md);
+ lnet_ping_buffer_decref(old_pbuf);
}
+
+ lnet_push_update_to_peers(0);
}
static void
lnet_ping_target_fini(void)
{
- int rc;
+ int rc;
- lnet_ping_md_unlink(the_lnet.ln_ping_info,
+ lnet_ping_md_unlink(the_lnet.ln_ping_target,
&the_lnet.ln_ping_target_md);
rc = LNetEQFree(the_lnet.ln_ping_target_eq);
LASSERT(rc == 0);
- lnet_ping_info_destroy();
+ lnet_ping_target_destroy();
+}
+
+/* Resize the push target. */
+int lnet_push_target_resize(void)
+{
+ lnet_process_id_t id = { LNET_NID_ANY, LNET_PID_ANY };
+ lnet_md_t md = { NULL };
+ lnet_handle_me_t meh;
+ lnet_handle_md_t mdh;
+ lnet_handle_md_t old_mdh;
+ struct lnet_ping_buffer *pbuf;
+ struct lnet_ping_buffer *old_pbuf;
+ int nnis = the_lnet.ln_push_target_nnis;
+ int rc;
+
+ if (nnis <= 0) {
+ rc = -EINVAL;
+ goto fail_return;
+ }
+again:
+ pbuf = lnet_ping_buffer_alloc(nnis, GFP_NOFS);
+ if (!pbuf) {
+ rc = -ENOMEM;
+ goto fail_return;
+ }
+
+ rc = LNetMEAttach(LNET_RESERVED_PORTAL, id,
+ LNET_PROTO_PING_MATCHBITS, 0,
+ LNET_UNLINK, LNET_INS_AFTER,
+ &meh);
+ if (rc) {
+ CERROR("Can't create push target ME: %d\n", rc);
+ goto fail_decref_pbuf;
+ }
+
+ /* initialize md content */
+ md.start = &pbuf->pb_info;
+ md.length = LNET_PING_INFO_SIZE(nnis);
+ md.threshold = LNET_MD_THRESH_INF;
+ md.max_size = 0;
+ md.options = LNET_MD_OP_PUT | LNET_MD_TRUNCATE |
+ LNET_MD_MANAGE_REMOTE;
+ md.user_ptr = pbuf;
+ md.eq_handle = the_lnet.ln_push_target_eq;
+
+ rc = LNetMDAttach(meh, md, LNET_RETAIN, &mdh);
+ if (rc) {
+ CERROR("Can't attach push MD: %d\n", rc);
+ goto fail_unlink_meh;
+ }
+ lnet_ping_buffer_addref(pbuf);
+
+ lnet_net_lock(LNET_LOCK_EX);
+ old_pbuf = the_lnet.ln_push_target;
+ old_mdh = the_lnet.ln_push_target_md;
+ the_lnet.ln_push_target = pbuf;
+ the_lnet.ln_push_target_md = mdh;
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ if (old_pbuf) {
+ LNetMDUnlink(old_mdh);
+ lnet_ping_buffer_decref(old_pbuf);
+ }
+
+ if (nnis < the_lnet.ln_push_target_nnis)
+ goto again;
+
+ CDEBUG(D_NET, "nnis %d success\n", nnis);
+
+ return 0;
+
+fail_unlink_meh:
+ LNetMEUnlink(meh);
+fail_decref_pbuf:
+ lnet_ping_buffer_decref(pbuf);
+fail_return:
+ CDEBUG(D_NET, "nnis %d error %d\n", nnis, rc);
+ return rc;
+}
+
+static void lnet_push_target_event_handler(struct lnet_event *ev)
+{
+ struct lnet_ping_buffer *pbuf = ev->md.user_ptr;
+
+ if (pbuf->pb_info.pi_magic == __swab32(LNET_PROTO_PING_MAGIC))
+ lnet_swap_pinginfo(pbuf);
+
+ lnet_peer_push_event(ev);
+ if (ev->unlinked)
+ lnet_ping_buffer_decref(pbuf);
+}
+
+/* Initialize the push target. */
+static int lnet_push_target_init(void)
+{
+ int rc;
+
+ if (the_lnet.ln_push_target)
+ return -EALREADY;
+
+ rc = LNetEQAlloc(0, lnet_push_target_event_handler,
+ &the_lnet.ln_push_target_eq);
+ if (rc) {
+ CERROR("Can't allocated push target EQ: %d\n", rc);
+ return rc;
+ }
+
+ /* Start at the required minimum, we'll enlarge if required. */
+ the_lnet.ln_push_target_nnis = LNET_INTERFACES_MIN;
+
+ rc = lnet_push_target_resize();
+
+ if (rc) {
+ LNetEQFree(the_lnet.ln_push_target_eq);
+ LNetInvalidateEQHandle(&the_lnet.ln_push_target_eq);
+ }
+
+ return rc;
+}
+
+/* Clean up the push target. */
+static void lnet_push_target_fini(void)
+{
+ if (!the_lnet.ln_push_target)
+ return;
+
+ /* Unlink and invalidate to prevent new references. */
+ LNetMDUnlink(the_lnet.ln_push_target_md);
+ LNetInvalidateMDHandle(&the_lnet.ln_push_target_md);
+
+ /* Wait for the unlink to complete. */
+ while (lnet_ping_buffer_numref(the_lnet.ln_push_target) > 1) {
+ CDEBUG(D_NET, "Still waiting for ping data MD to unlink\n");
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(cfs_time_seconds(1));
+ }
+
+ lnet_ping_buffer_decref(the_lnet.ln_push_target);
+ the_lnet.ln_push_target = NULL;
+ the_lnet.ln_push_target_nnis = 0;
+
+ LNetEQFree(the_lnet.ln_push_target_eq);
+ LNetInvalidateEQHandle(&the_lnet.ln_push_target_eq);
}
static int
-lnet_ni_tq_credits(lnet_ni_t *ni)
+lnet_ni_tq_credits(struct lnet_ni *ni)
{
int credits;
LASSERT(ni->ni_ncpts >= 1);
if (ni->ni_ncpts == 1)
- return ni->ni_maxtxcredits;
+ return ni->ni_net->net_tunables.lct_max_tx_credits;
- credits = ni->ni_maxtxcredits / ni->ni_ncpts;
- credits = max(credits, 8 * ni->ni_peertxcredits);
- credits = min(credits, ni->ni_maxtxcredits);
+ 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)
+lnet_ni_unlink_locked(struct lnet_ni *ni)
{
if (!list_empty(&ni->ni_cptlist)) {
list_del_init(&ni->ni_cptlist);
}
/* move it to zombie list and nobody can find it anymore */
- LASSERT(!list_empty(&ni->ni_list));
- list_move(&ni->ni_list, &the_lnet.ln_nis_zombie);
- lnet_ni_decref_locked(ni, 0); /* drop ln_nis' ref */
+ 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(void)
+lnet_clear_zombies_nis_locked(struct lnet_net *net)
{
int i;
int islo;
- lnet_ni_t *ni;
+ struct lnet_ni *ni;
+ struct list_head *zombie_list = &net->net_ni_zombie;
- /* Now wait for the NI's I just nuked to show up on ln_zombie_nis
- * and shut them down in guaranteed thread context */
+ /*
+ * 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(&the_lnet.ln_nis_zombie)) {
+ while (!list_empty(zombie_list)) {
int *ref;
int j;
- ni = list_entry(the_lnet.ln_nis_zombie.next,
- lnet_ni_t, ni_list);
- list_del_init(&ni->ni_list);
+ ni = list_entry(zombie_list->next,
+ struct lnet_ni, 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_list, &the_lnet.ln_nis_zombie);
+ list_add(&ni->ni_netlist, zombie_list);
break;
}
- if (!list_empty(&ni->ni_list)) {
+ if (!list_empty(&ni->ni_netlist)) {
lnet_net_unlock(LNET_LOCK_EX);
++i;
if ((i & (-i)) == i) {
continue;
}
- ni->ni_lnd->lnd_refcount--;
lnet_net_unlock(LNET_LOCK_EX);
- islo = ni->ni_lnd->lnd_type == LOLND;
+ islo = ni->ni_net->net_lnd->lnd_type == LOLND;
LASSERT(!in_interrupt());
- (ni->ni_lnd->lnd_shutdown)(ni);
-
- /* can't deref lnd anymore now; it might have unregistered
- * itself... */
+ (net->net_lnd->lnd_shutdown)(ni);
if (!islo)
CDEBUG(D_LNI, "Removed LNI %s\n",
}
}
+/* shutdown down the NI and release refcount */
static void
-lnet_shutdown_lndnis(void)
+lnet_shutdown_lndni(struct lnet_ni *ni)
{
- int i;
- lnet_ni_t *ni;
-
- /* NB called holding the global mutex */
-
- /* All quiet on the API front */
- LASSERT(!the_lnet.ln_shutdown);
- LASSERT(the_lnet.ln_refcount == 0);
- LASSERT(list_empty(&the_lnet.ln_nis_zombie));
+ int i;
+ struct lnet_net *net = ni->ni_net;
lnet_net_lock(LNET_LOCK_EX);
- 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);
- lnet_ni_unlink_locked(ni);
- }
-
- /* 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;
- }
-
+ ni->ni_state = LNET_NI_STATE_DELETING;
+ lnet_ni_unlink_locked(ni);
+ lnet_incr_dlc_seq();
lnet_net_unlock(LNET_LOCK_EX);
- /* Clear lazy portals and drop delayed messages which hold refs
- * on their lnet_msg_t::msg_rxpeer */
+ /* clear messages for this NI on the lazy portal */
for (i = 0; i < the_lnet.ln_nportals; i++)
- LNetClearLazyPortal(i);
-
- /* Clear the peer table and wait for all peers to go (they hold refs on
- * their NIs) */
- lnet_peer_tables_cleanup(NULL);
+ lnet_clear_lazy_portal(ni, i, "Shutting down NI");
lnet_net_lock(LNET_LOCK_EX);
-
- lnet_clear_zombies_nis_locked();
- the_lnet.ln_shutdown = 0;
+ lnet_clear_zombies_nis_locked(net);
lnet_net_unlock(LNET_LOCK_EX);
}
-/* shutdown down the NI and release refcount */
static void
-lnet_shutdown_lndni(struct lnet_ni *ni)
+lnet_shutdown_lndnet(struct lnet_net *net)
{
- int i;
+ struct lnet_ni *ni;
lnet_net_lock(LNET_LOCK_EX);
- lnet_ni_unlink_locked(ni);
- 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");
+ net->net_state = LNET_NET_STATE_DELETING;
+
+ list_del_init(&net->net_list);
- /* Do peer table cleanup for this ni */
- lnet_peer_tables_cleanup(ni);
+ while (!list_empty(&net->net_ni_list)) {
+ ni = list_entry(net->net_ni_list.next,
+ struct lnet_ni, 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);
- lnet_clear_zombies_nis_locked();
+ /*
+ * 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 int
-lnet_startup_lndni(struct lnet_ni *ni, struct lnet_ioctl_config_data *conf)
+static void
+lnet_shutdown_lndnets(void)
{
- struct lnet_ioctl_config_lnd_tunables *lnd_tunables = NULL;
- int rc = -EINVAL;
- __u32 lnd_type;
- lnd_t *lnd;
- struct lnet_tx_queue *tq;
- int i;
+ struct lnet_net *net;
- lnd_type = LNET_NETTYP(LNET_NIDNET(ni->ni_nid));
-
- LASSERT(libcfs_isknown_lnd(lnd_type));
+ /* NB called holding the global mutex */
- if (lnd_type == CIBLND || lnd_type == OPENIBLND ||
- lnd_type == IIBLND || lnd_type == VIBLND) {
- CERROR("LND %s obsoleted\n", libcfs_lnd2str(lnd_type));
- goto failed0;
- }
+ /* All quiet on the API front */
+ LASSERT(the_lnet.ln_state == LNET_STATE_RUNNING);
+ LASSERT(the_lnet.ln_refcount == 0);
- /* Make sure this new NI is unique. */
lnet_net_lock(LNET_LOCK_EX);
- rc = lnet_net_unique(LNET_NIDNET(ni->ni_nid), &the_lnet.ln_nis);
- lnet_net_unlock(LNET_LOCK_EX);
-
- if (!rc) {
- if (lnd_type == LOLND) {
- lnet_ni_free(ni);
- return 0;
- }
+ the_lnet.ln_state = LNET_STATE_STOPPING;
- CERROR("Net %s is not unique\n",
- libcfs_net2str(LNET_NIDNET(ni->ni_nid)));
-
- rc = -EEXIST;
- goto failed0;
+ 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);
}
- 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);
+ /* 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);
- 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
- rc = -EINVAL;
- goto failed0;
- }
+ /* 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);
- lnd->lnd_refcount++;
+ the_lnet.ln_state = LNET_STATE_SHUTDOWN;
lnet_net_unlock(LNET_LOCK_EX);
+}
- ni->ni_lnd = lnd;
+static int
+lnet_startup_lndni(struct lnet_ni *ni, struct lnet_lnd_tunables *tun)
+{
+ int rc = -EINVAL;
+ struct lnet_tx_queue *tq;
+ int i;
+ struct lnet_net *net = ni->ni_net;
- if (conf && conf->cfg_hdr.ioc_len > sizeof(*conf))
- lnd_tunables = (struct lnet_ioctl_config_lnd_tunables *)conf->cfg_bulk;
+ mutex_lock(&the_lnet.ln_lnd_mutex);
- if (lnd_tunables != NULL) {
- LIBCFS_ALLOC(ni->ni_lnd_tunables,
- sizeof(*ni->ni_lnd_tunables));
- if (ni->ni_lnd_tunables == NULL) {
- mutex_unlock(&the_lnet.ln_lnd_mutex);
- rc = -ENOMEM;
- goto failed0;
- }
- memcpy(ni->ni_lnd_tunables, lnd_tunables,
- sizeof(*ni->ni_lnd_tunables));
+ if (tun) {
+ memcpy(&ni->ni_lnd_tunables, tun, sizeof(*tun));
+ ni->ni_lnd_tunables_set = true;
}
- rc = (lnd->lnd_startup)(ni);
+ 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(lnd->lnd_type));
+ rc, libcfs_lnd2str(net->net_lnd->lnd_type));
lnet_net_lock(LNET_LOCK_EX);
- lnd->lnd_refcount--;
+ net->net_lnd->lnd_refcount--;
lnet_net_unlock(LNET_LOCK_EX);
goto failed0;
}
- /* If given some LND tunable parameters, parse those now to
- * override the values in the NI structure. */
- if (conf && conf->cfg_config_u.cfg_net.net_peer_rtr_credits >= 0) {
- ni->ni_peerrtrcredits =
- conf->cfg_config_u.cfg_net.net_peer_rtr_credits;
- }
- if (conf && conf->cfg_config_u.cfg_net.net_peer_timeout >= 0) {
- ni->ni_peertimeout =
- conf->cfg_config_u.cfg_net.net_peer_timeout;
- }
+ ni->ni_state = LNET_NI_STATE_ACTIVE;
- /*
- * TODO
- * Note: For now, don't allow the user to change
- * peertxcredits as this number is used in the
- * IB LND to control queue depth.
- *
- * if (conf && conf->cfg_config_u.cfg_net.net_peer_tx_credits != -1)
- * ni->ni_peertxcredits =
- * conf->cfg_config_u.cfg_net.net_peer_tx_credits;
- */
- if (conf && conf->cfg_config_u.cfg_net.net_max_tx_credits >= 0) {
- ni->ni_maxtxcredits =
- conf->cfg_config_u.cfg_net.net_max_tx_credits;
- }
-
- LASSERT(ni->ni_peertimeout <= 0 || lnd->lnd_query != NULL);
-
- lnet_net_lock(LNET_LOCK_EX);
- /* refcount for ln_nis */
- lnet_ni_addref_locked(ni, 0);
- list_add_tail(&ni->ni_list, &the_lnet.ln_nis);
- if (ni->ni_cpts != NULL) {
- lnet_ni_addref_locked(ni, 0);
- list_add_tail(&ni->ni_cptlist, &the_lnet.ln_nis_cpt);
- }
-
- lnet_net_unlock(LNET_LOCK_EX);
-
- if (lnd->lnd_type == LOLND) {
+ /* 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_peertxcredits == 0 || ni->ni_maxtxcredits == 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(lnd->lnd_type),
- ni->ni_peertxcredits == 0 ?
+ 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
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_peertxcredits,
+ libcfs_nid2str(ni->ni_nid),
+ ni->ni_net->net_tunables.lct_peer_tx_credits,
lnet_ni_tq_credits(ni) * LNET_CPT_NUMBER,
- ni->ni_peerrtrcredits, ni->ni_peertimeout);
+ ni->ni_net->net_tunables.lct_peer_rtr_credits,
+ ni->ni_net->net_tunables.lct_peer_timeout);
return 0;
failed0:
}
static int
-lnet_startup_lndnis(struct list_head *nilist)
+lnet_startup_lndnet(struct lnet_net *net, struct lnet_lnd_tunables *tun)
{
- struct lnet_ni *ni;
+ 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;
+ struct lnet_lnd *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;
- while (!list_empty(nilist)) {
- ni = list_entry(nilist->next, lnet_ni_t, ni_list);
- list_del(&ni->ni_list);
- rc = lnet_startup_lndni(ni, NULL);
+ 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));
+
+ 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
+ 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 failed;
+ 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;
+
+ /*
+ * Change to running state before bringing up the LNDs. This
+ * allows lnet_shutdown_lndnets() to assert that we've passed
+ * through here.
+ */
+ lnet_net_lock(LNET_LOCK_EX);
+ the_lnet.ln_state = LNET_STATE_RUNNING;
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ 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_lndnis();
+ lnet_shutdown_lndnets();
return 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);
}
the_lnet.ln_refcount = 0;
- LNetInvalidateHandle(&the_lnet.ln_rc_eqh);
+ LNetInvalidateEQHandle(&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);
while (!list_empty(&the_lnet.ln_lnds))
lnet_unregister_lnd(list_entry(the_lnet.ln_lnds.next,
- lnd_t, lnd_list));
+ struct lnet_lnd, lnd_list));
lnet_destroy_locks();
}
int im_a_router = 0;
int rc;
int ni_count;
- lnet_ping_info_t *pinfo;
- lnet_handle_md_t md_handle;
+ struct lnet_ping_buffer *pbuf;
+ struct lnet_handle_md ping_mdh;
struct list_head net_head;
+ struct lnet_net *net;
INIT_LIST_HEAD(&net_head);
return rc;
}
- /* Add in the loopback network */
- if (lnet_ni_alloc(LNET_MKNET(LOLND, 0), NULL, &net_head) == NULL) {
+ /* create a network for Loopback network */
+ net = lnet_net_alloc(LNET_MKNET(LOLND, 0), &net_head);
+ if (net == NULL) {
rc = -ENOMEM;
- goto failed0;
+ 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
* 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());
+ rc = lnet_parse_networks(&net_head, lnet_get_networks(),
+ use_tcp_bonding);
if (rc < 0)
- goto failed0;
+ goto err_empty_list;
}
- ni_count = lnet_startup_lndnis(&net_head);
+ ni_count = lnet_startup_lndnets(&net_head);
if (ni_count < 0) {
rc = ni_count;
- goto failed0;
+ 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 failed1;
+ goto err_shutdown_lndnis;
rc = lnet_check_routes();
if (rc != 0)
- goto failed2;
+ goto err_destroy_routes;
rc = lnet_rtrpools_alloc(im_a_router);
if (rc != 0)
- goto failed2;
+ goto err_destroy_routes;
}
rc = lnet_acceptor_start();
if (rc != 0)
- goto failed2;
+ 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);
+ rc = lnet_ping_target_setup(&pbuf, &ping_mdh, ni_count, true);
if (rc != 0)
- goto failed3;
+ goto err_acceptor_stop;
- lnet_ping_target_update(pinfo, md_handle);
+ lnet_ping_target_update(pbuf, ping_mdh);
rc = lnet_router_checker_start();
if (rc != 0)
- goto failed4;
+ goto err_stop_ping;
+
+ rc = lnet_push_target_init();
+ if (rc != 0)
+ goto err_stop_router_checker;
+
+ rc = lnet_peer_discovery_start();
+ if (rc != 0)
+ goto err_destroy_push_target;
lnet_fault_init();
lnet_proc_init();
return 0;
-failed4:
+err_destroy_push_target:
+ lnet_push_target_fini();
+err_stop_router_checker:
+ lnet_router_checker_stop();
+err_stop_ping:
lnet_ping_target_fini();
-failed3:
+err_acceptor_stop:
the_lnet.ln_refcount = 0;
lnet_acceptor_stop();
-failed2:
+err_destroy_routes:
if (!the_lnet.ln_nis_from_mod_params)
lnet_destroy_routes();
-failed1:
- lnet_shutdown_lndnis();
-failed0:
+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_ni *ni;
- ni = list_entry(net_head.next, struct lnet_ni, ni_list);
- list_del_init(&ni->ni_list);
- lnet_ni_free(ni);
+ 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;
}
{
mutex_lock(&the_lnet.ln_api_mutex);
- LASSERT (the_lnet.ln_refcount > 0);
+ LASSERT(the_lnet.ln_refcount > 0);
- if (the_lnet.ln_refcount != 1) {
- the_lnet.ln_refcount--;
- } else {
+ 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();
+ lnet_proc_fini();
+ lnet_peer_discovery_stop();
+ lnet_push_target_fini();
+ lnet_router_checker_stop();
+ lnet_ping_target_fini();
- /* Teardown fns that use my own API functions BEFORE here */
- the_lnet.ln_refcount = 0;
+ /* Teardown fns that use my own API functions BEFORE here */
+ the_lnet.ln_refcount = 0;
- lnet_acceptor_stop();
- lnet_destroy_routes();
- lnet_shutdown_lndnis();
- lnet_unprepare();
- }
+ lnet_acceptor_stop();
+ lnet_destroy_routes();
+ lnet_shutdown_lndnets();
+ lnet_unprepare();
+ }
mutex_unlock(&the_lnet.ln_api_mutex);
- return 0;
+ return 0;
}
EXPORT_SYMBOL(LNetNIFini);
* parameters
*
* \param[in] ni network interface structure
- * \param[out] cpt_count the number of cpts the ni is on
- * \param[out] nid Network Interface ID
- * \param[out] peer_timeout NI peer timeout
- * \param[out] peer_tx_crdits NI peer transmit credits
- * \param[out] peer_rtr_credits NI peer router credits
- * \param[out] max_tx_credits NI max transmit credit
- * \param[out] net_config Network configuration
+ * \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_data *config)
+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;
+ if (LNET_NETTYP(LNET_NIDNET(ni->ni_nid)) == LOLND)
+ cfg_ni->lic_status = LNET_NI_STATUS_UP;
+ else
+ cfg_ni->lic_status = ni->ni_status->ns_status;
+ cfg_ni->lic_tcp_bonding = use_tcp_bonding;
+ cfg_ni->lic_dev_cpt = ni->ni_dev_cpt;
+
+ memcpy(&tun->lt_cmn, &ni->ni_net->net_tunables, sizeof(tun->lt_cmn));
+
+ if (stats) {
+ stats->iel_send_count = lnet_sum_stats(&ni->ni_stats,
+ LNET_STATS_TYPE_SEND);
+ stats->iel_recv_count = lnet_sum_stats(&ni->ni_stats,
+ LNET_STATS_TYPE_RECV);
+ stats->iel_drop_count = lnet_sum_stats(&ni->ni_stats,
+ LNET_STATS_TYPE_DROP);
+ }
+
+ /*
+ * 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;
if (!net_config)
return;
- CLASSERT(ARRAY_SIZE(ni->ni_interfaces) ==
- ARRAY_SIZE(net_config->ni_interfaces));
+ BUILD_BUG_ON(ARRAY_SIZE(ni->ni_interfaces) !=
+ ARRAY_SIZE(net_config->ni_interfaces));
- if (ni->ni_interfaces[0] != NULL) {
- for (i = 0; i < ARRAY_SIZE(ni->ni_interfaces); i++) {
- if (ni->ni_interfaces[i] != NULL) {
- strncpy(net_config->ni_interfaces[i],
- ni->ni_interfaces[i],
- sizeof(net_config->ni_interfaces[i]));
- }
- }
+ 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_peertimeout;
- config->cfg_config_u.cfg_net.net_max_tx_credits = ni->ni_maxtxcredits;
- config->cfg_config_u.cfg_net.net_peer_tx_credits = ni->ni_peertxcredits;
- config->cfg_config_u.cfg_net.net_peer_rtr_credits = ni->ni_peerrtrcredits;
+ 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 (LNET_NETTYP(LNET_NIDNET(ni->ni_nid)) == LOLND)
+ net_config->ni_status = LNET_NI_STATUS_UP;
+ else
+ net_config->ni_status = ni->ni_status->ns_status;
- for (i = 0;
- ni->ni_cpts != NULL && i < ni->ni_ncpts &&
- i < LNET_MAX_SHOW_NUM_CPT;
- i++)
- net_config->ni_cpts[i] = ni->ni_cpts[i];
+ if (ni->ni_cpts) {
+ int num_cpts = min(ni->ni_ncpts, LNET_MAX_SHOW_NUM_CPT);
- config->cfg_ncpts = ni->ni_ncpts;
+ 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
if (config->cfg_hdr.ioc_len > min_size)
tunable_size = config->cfg_hdr.ioc_len - min_size;
- /* Don't copy to much data to user space */
- min_size = min(tunable_size, sizeof(*ni->ni_lnd_tunables));
+ /* 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 (ni->ni_lnd_tunables && lnd_cfg && min_size) {
- memcpy(lnd_cfg, ni->ni_lnd_tunables, min_size);
- config->cfg_config_u.cfg_net.net_interface_count = 1;
+ 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;
+}
+
+int lnet_get_ni_stats(struct lnet_ioctl_element_msg_stats *msg_stats)
+{
+ struct lnet_ni *ni;
+ int cpt;
+ int rc = -ENOENT;
+
+ if (!msg_stats)
+ return -EINVAL;
+
+ cpt = lnet_net_lock_current();
+
+ ni = lnet_get_ni_idx_locked(msg_stats->im_idx);
+
+ if (ni) {
+ lnet_usr_translate_stats(msg_stats, &ni->ni_stats);
+ rc = 0;
+ }
+
+ lnet_net_unlock(cpt);
+
+ return rc;
+}
+
+static int lnet_add_net_common(struct lnet_net *net,
+ struct lnet_ioctl_config_lnd_tunables *tun)
+{
+ __u32 net_id;
+ struct lnet_ping_buffer *pbuf;
+ struct lnet_handle_md ping_mdh;
+ int rc;
+ struct lnet_remotenet *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));
+ lnet_net_free(net);
+ return -EUSERS;
+ }
+
+ /*
+ * make sure you calculate the correct number of slots in the ping
+ * buffer. 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_target_setup(&pbuf, &ping_mdh,
+ net_ni_count + lnet_get_ni_count(),
+ false);
+ if (rc < 0) {
+ lnet_net_free(net);
+ return rc;
+ }
+
+ 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);
+ net = lnet_get_net_locked(net_id);
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ LASSERT(net);
+
+ /*
+ * Start the acceptor thread if this is the first network
+ * being added that requires the thread.
+ */
+ if (net->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(net);
+ lnet_net_unlock(LNET_LOCK_EX);
+
+ lnet_ping_target_update(pbuf, ping_mdh);
+
+ return 0;
+
+failed:
+ lnet_ping_md_unlink(pbuf, &ping_mdh);
+ lnet_ping_buffer_decref(pbuf);
+ 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, i;
+ __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;
+
+ for (i = 0; i < conf->lic_ncpts; i++) {
+ if (conf->lic_cpts[i] >= LNET_CPT_NUMBER)
+ return -EINVAL;
+ }
+
+ 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);
+ struct lnet_ping_buffer *pbuf;
+ struct lnet_handle_md ping_mdh;
+ 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 unlock_net;
+ }
+
+ 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_target_setup(&pbuf, &ping_mdh,
+ lnet_get_ni_count() - net_count,
+ false);
+ if (rc != 0)
+ goto unlock_api_mutex;
+
+ lnet_shutdown_lndnet(net);
+
+ if (lnet_count_acceptor_nets() == 0)
+ lnet_acceptor_stop();
+
+ lnet_ping_target_update(pbuf, ping_mdh);
+
+ goto unlock_api_mutex;
+ }
+
+ ni = lnet_nid2ni_locked(conf->lic_nid, 0);
+ if (!ni) {
+ CERROR("nid %s not found\n",
+ libcfs_nid2str(conf->lic_nid));
+ rc = -ENOENT;
+ goto unlock_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_target_setup(&pbuf, &ping_mdh,
+ lnet_get_ni_count() - 1, false);
+ if (rc != 0)
+ goto unlock_api_mutex;
+
+ lnet_shutdown_lndni(ni);
- /* 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;
- }
- }
-}
+ if (lnet_count_acceptor_nets() == 0)
+ lnet_acceptor_stop();
-static int
-lnet_get_net_config(struct lnet_ioctl_config_data *config)
-{
- struct lnet_ni *ni;
- struct list_head *tmp;
- int idx = config->cfg_count;
- int rc = -ENOENT;
- int cpt;
+ lnet_ping_target_update(pbuf, ping_mdh);
- if (unlikely(!config->cfg_bulk))
- return -EINVAL;
+ /* check if the net is empty and remove it if it is */
+ if (net_count == 1)
+ lnet_shutdown_lndnet(net);
- cpt = lnet_net_lock_current();
+ goto unlock_api_mutex;
- list_for_each(tmp, &the_lnet.ln_nis) {
- ni = list_entry(tmp, lnet_ni_t, ni_list);
- if (idx-- == 0) {
- rc = 0;
- lnet_ni_lock(ni);
- lnet_fill_ni_info(ni, config);
- lnet_ni_unlock(ni);
- break;
- }
- }
+unlock_net:
+ lnet_net_unlock(0);
+unlock_api_mutex:
+ mutex_unlock(&the_lnet.ln_api_mutex);
- lnet_net_unlock(cpt);
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_ni(lnet_pid_t requested_pid, struct lnet_ioctl_config_data *conf)
+lnet_dyn_add_net(struct lnet_ioctl_config_data *conf)
{
- char *nets = conf->cfg_config_u.cfg_net.net_intf;
- lnet_ping_info_t *pinfo;
- lnet_handle_md_t md_handle;
- struct lnet_ni *ni;
+ struct lnet_net *net;
struct list_head net_head;
int rc;
- lnet_remotenet_t *rnet;
+ struct lnet_ioctl_config_lnd_tunables tun;
+ char *nets = conf->cfg_config_u.cfg_net.net_intf;
INIT_LIST_HEAD(&net_head);
- /* Create a ni structure for the network string */
- rc = lnet_parse_networks(&net_head, nets);
+ /* 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;
mutex_lock(&the_lnet.ln_api_mutex);
if (rc > 1) {
- rc = -EINVAL; /* only add one interface per call */
- goto failed0;
- }
-
- ni = list_entry(net_head.next, struct lnet_ni, ni_list);
-
- lnet_net_lock(LNET_LOCK_EX);
- rnet = lnet_find_net_locked(LNET_NIDNET(ni->ni_nid));
- lnet_net_unlock(LNET_LOCK_EX);
- /* make sure that the net added doesn't invalidate the current
- * configuration LNet is keeping */
- if (rnet != NULL) {
- CERROR("Adding net %s will invalidate routing configuration\n",
- nets);
- rc = -EUSERS;
- goto failed0;
+ rc = -EINVAL; /* only add one network per call */
+ goto out_unlock_clean;
}
- rc = lnet_ping_info_setup(&pinfo, &md_handle, 1 + lnet_get_ni_count(),
- false);
- if (rc != 0)
- goto failed0;
-
- list_del_init(&ni->ni_list);
+ net = list_entry(net_head.next, struct lnet_net, net_list);
+ list_del_init(&net->net_list);
- rc = lnet_startup_lndni(ni, conf);
- if (rc != 0)
- goto failed1;
+ LASSERT(lnet_net_unique(net->net_id, &the_lnet.ln_nets, NULL));
- if (ni->ni_lnd->lnd_accept != NULL) {
- rc = lnet_acceptor_start();
- if (rc < 0) {
- /* shutdown the ni that we just started */
- CERROR("Failed to start up acceptor thread\n");
- lnet_shutdown_lndni(ni);
- goto failed1;
- }
- }
+ memset(&tun, 0, sizeof(tun));
- lnet_ping_target_update(pinfo, md_handle);
- mutex_unlock(&the_lnet.ln_api_mutex);
+ 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;
- return 0;
+ rc = lnet_add_net_common(net, &tun);
-failed1:
- lnet_ping_md_unlink(pinfo, &md_handle);
- lnet_ping_info_free(pinfo);
-failed0:
+out_unlock_clean:
mutex_unlock(&the_lnet.ln_api_mutex);
while (!list_empty(&net_head)) {
- ni = list_entry(net_head.next, struct lnet_ni, ni_list);
- list_del_init(&ni->ni_list);
- lnet_ni_free(ni);
+ /* net_head list is empty in success case */
+ 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_del_ni(__u32 net)
+lnet_dyn_del_net(__u32 net_id)
{
- lnet_ni_t *ni;
- lnet_ping_info_t *pinfo;
- lnet_handle_md_t md_handle;
+ struct lnet_net *net;
+ struct lnet_ping_buffer *pbuf;
+ struct lnet_handle_md ping_mdh;
int rc;
+ int net_ni_count;
/* don't allow userspace to shutdown the LOLND */
- if (LNET_NETTYP(net) == LOLND)
+ if (LNET_NETTYP(net_id) == LOLND)
return -EINVAL;
mutex_lock(&the_lnet.ln_api_mutex);
- /* 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;
- ni = lnet_net2ni(net);
- if (ni == NULL) {
+ lnet_net_lock(0);
+
+ net = lnet_get_net_locked(net_id);
+ if (net == NULL) {
+ lnet_net_unlock(0);
rc = -EINVAL;
- goto failed;
+ goto out;
}
- /* decrement the reference counter taken by lnet_net2ni() */
- lnet_ni_decref_locked(ni, 0);
+ net_ni_count = lnet_get_net_ni_count_locked(net);
- lnet_shutdown_lndni(ni);
+ lnet_net_unlock(0);
+
+ /* create and link a new ping info, before removing the old one */
+ rc = lnet_ping_target_setup(&pbuf, &ping_mdh,
+ lnet_get_ni_count() - net_ni_count, false);
+ if (rc != 0)
+ goto out;
- if (lnet_count_acceptor_nis() == 0)
+ lnet_shutdown_lndnet(net);
+
+ if (lnet_count_acceptor_nets() == 0)
lnet_acceptor_stop();
- lnet_ping_target_update(pinfo, md_handle);
- goto out;
-failed:
- lnet_ping_md_unlink(pinfo, &md_handle);
- lnet_ping_info_free(pinfo);
+ lnet_ping_target_update(pbuf, ping_mdh);
+
out:
mutex_unlock(&the_lnet.ln_api_mutex);
return rc;
}
+void lnet_incr_dlc_seq(void)
+{
+ atomic_inc(&lnet_dlc_seq_no);
+}
+
+__u32 lnet_get_dlc_seq_locked(void)
+{
+ return atomic_read(&lnet_dlc_seq_no);
+}
+
/**
* LNet ioctl handler.
*
{
struct libcfs_ioctl_data *data = arg;
struct lnet_ioctl_config_data *config;
- lnet_process_id_t id = {0};
- lnet_ni_t *ni;
- int rc;
+ struct lnet_process_id id = {0};
+ struct lnet_ni *ni;
+ int rc;
- CLASSERT(LIBCFS_IOC_DATA_MAX >= sizeof(struct lnet_ioctl_net_config) +
- sizeof(struct lnet_ioctl_config_data));
+ 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:
if (config->cfg_hdr.ioc_len < sizeof(*config))
return -EINVAL;
- return 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.
+ 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;
+ }
+
+ case IOC_LIBCFS_GET_LOCAL_NI_MSG_STATS: {
+ struct lnet_ioctl_element_msg_stats *msg_stats = arg;
+
+ if (msg_stats->im_hdr.ioc_len != sizeof(*msg_stats))
+ return -EINVAL;
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+ rc = lnet_get_ni_stats(msg_stats);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+
+ return rc;
+ }
case IOC_LIBCFS_GET_NET: {
size_t total = sizeof(*config) +
if (config->cfg_hdr.ioc_len < total)
return -EINVAL;
- return lnet_get_net_config(config);
+ mutex_lock(&the_lnet.ln_api_mutex);
+ rc = lnet_get_net_config(config);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
}
case IOC_LIBCFS_GET_LNET_STATS:
if (lnet_stats->st_hdr.ioc_len < sizeof(*lnet_stats))
return -EINVAL;
+ mutex_lock(&the_lnet.ln_api_mutex);
lnet_counters_get(&lnet_stats->st_cntrs);
+ mutex_unlock(&the_lnet.ln_api_mutex);
return 0;
}
mutex_unlock(&the_lnet.ln_api_mutex);
return rc;
+ case IOC_LIBCFS_SET_NUMA_RANGE: {
+ struct lnet_ioctl_set_value *numa;
+ numa = arg;
+ if (numa->sv_hdr.ioc_len != sizeof(*numa))
+ return -EINVAL;
+ lnet_net_lock(LNET_LOCK_EX);
+ lnet_numa_range = numa->sv_value;
+ lnet_net_unlock(LNET_LOCK_EX);
+ return 0;
+ }
+
+ case IOC_LIBCFS_GET_NUMA_RANGE: {
+ struct lnet_ioctl_set_value *numa;
+ numa = arg;
+ if (numa->sv_hdr.ioc_len != sizeof(*numa))
+ return -EINVAL;
+ numa->sv_value = 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);
return -EINVAL;
pool_cfg = (struct lnet_ioctl_pool_cfg *)config->cfg_bulk;
- return lnet_get_rtr_pool_cfg(config->cfg_count, pool_cfg);
+
+ 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(cfg->prcfg_prim_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(cfg->prcfg_prim_nid,
+ cfg->prcfg_cfg_nid);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
}
case IOC_LIBCFS_GET_PEER_INFO: {
if (peer_info->pr_hdr.ioc_len < sizeof(*peer_info))
return -EINVAL;
- return lnet_get_peer_info(
+ 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_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_min_tx_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;
+
+ if (cfg->prcfg_hdr.ioc_len < sizeof(*cfg))
+ return -EINVAL;
+
+ mutex_lock(&the_lnet.ln_api_mutex);
+ rc = lnet_get_peer_info(&cfg->prcfg_prim_nid,
+ &cfg->prcfg_cfg_nid,
+ &cfg->prcfg_count,
+ &cfg->prcfg_mr,
+ &cfg->prcfg_size,
+ (void __user *)cfg->prcfg_bulk);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
+ }
+
+ case IOC_LIBCFS_GET_PEER_LIST: {
+ 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_get_peer_list(&cfg->prcfg_count, &cfg->prcfg_size,
+ (lnet_process_id_t __user *)cfg->prcfg_bulk);
+ mutex_unlock(&the_lnet.ln_api_mutex);
+ return rc;
}
- case IOC_LIBCFS_NOTIFY_ROUTER:
+ 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,
- cfs_time_current() -
- cfs_time_seconds(cfs_time_current_sec() -
- (time_t)data->ioc_u64[0]));
+ jiffies - jiffies_passed);
+ }
case IOC_LIBCFS_LNET_DIST:
rc = LNetDist(data->ioc_nid, &data->ioc_nid, &data->ioc_u32[1]);
case IOC_LIBCFS_LNET_FAULT:
return lnet_fault_ctl(data->ioc_flags, data);
- case IOC_LIBCFS_PING:
+ case IOC_LIBCFS_PING: {
+ signed long timeout;
+
id.nid = data->ioc_nid;
id.pid = data->ioc_u32[0];
- rc = lnet_ping(id, data->ioc_u32[1], /* timeout */
- (lnet_process_id_t __user *)data->ioc_pbuf1,
- data->ioc_plen1/sizeof(lnet_process_id_t));
+
+ /* If timeout is negative then set default of 3 minutes */
+ if (((s32)data->ioc_u32[1] <= 0) ||
+ data->ioc_u32[1] > (DEFAULT_PEER_TIMEOUT * MSEC_PER_SEC))
+ timeout = msecs_to_jiffies(DEFAULT_PEER_TIMEOUT * MSEC_PER_SEC);
+ else
+ timeout = msecs_to_jiffies(data->ioc_u32[1]);
+
+ rc = lnet_ping(id, timeout, data->ioc_pbuf1,
+ data->ioc_plen1 / sizeof(struct lnet_process_id));
+
if (rc < 0)
return rc;
+
data->ioc_count = rc;
return 0;
+ }
+
+ case IOC_LIBCFS_PING_PEER: {
+ struct lnet_ioctl_ping_data *ping = arg;
+ struct lnet_peer *lp;
+ signed long timeout;
+
+ /* If timeout is negative then set default of 3 minutes */
+ if (((s32)ping->op_param) <= 0 ||
+ ping->op_param > (DEFAULT_PEER_TIMEOUT * MSEC_PER_SEC))
+ timeout = msecs_to_jiffies(DEFAULT_PEER_TIMEOUT * MSEC_PER_SEC);
+ else
+ timeout = msecs_to_jiffies(ping->op_param);
+
+ rc = lnet_ping(ping->ping_id, timeout,
+ ping->ping_buf,
+ ping->ping_count);
+ if (rc < 0)
+ return rc;
+
+ lp = lnet_find_peer(ping->ping_id.nid);
+ if (lp) {
+ ping->ping_id.nid = lp->lp_primary_nid;
+ ping->mr_info = lnet_peer_is_multi_rail(lp);
+ }
+ ping->ping_count = rc;
+ return 0;
+ }
+
+ case IOC_LIBCFS_DISCOVER: {
+ struct lnet_ioctl_ping_data *discover = arg;
+ struct lnet_peer *lp;
+
+ rc = lnet_discover(discover->ping_id, discover->op_param,
+ discover->ping_buf,
+ discover->ping_count);
+ if (rc < 0)
+ return rc;
+ lp = lnet_find_peer(discover->ping_id.nid);
+ if (lp) {
+ discover->ping_id.nid = lp->lp_primary_nid;
+ discover->mr_info = lnet_peer_is_multi_rail(lp);
+ }
+
+ discover->ping_count = rc;
+ return 0;
+ }
default:
- ni = lnet_net2ni(data->ioc_net);
+ ni = lnet_net2ni_addref(data->ioc_net);
if (ni == NULL)
return -EINVAL;
- if (ni->ni_lnd->lnd_ctl == NULL)
+ if (ni->ni_net->net_lnd->lnd_ctl == NULL)
rc = -EINVAL;
else
- rc = ni->ni_lnd->lnd_ctl(ni, cmd, arg);
+ rc = ni->ni_net->net_lnd->lnd_ctl(ni, cmd, arg);
lnet_ni_decref(ni);
return rc;
}
EXPORT_SYMBOL(LNetCtl);
-void LNetDebugPeer(lnet_process_id_t id)
+void LNetDebugPeer(struct lnet_process_id 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().
+ * Determine if the specified peer \a nid is on the local node.
+ *
+ * \param nid peer nid to check
+ *
+ * \retval true If peer NID is on the local node.
+ * \retval false If peer NID is not on the local node.
+ */
+bool LNetIsPeerLocal(lnet_nid_t nid)
+{
+ struct lnet_net *net;
+ struct lnet_ni *ni;
+ int cpt;
+
+ cpt = lnet_net_lock_current();
+ 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) {
+ lnet_net_unlock(cpt);
+ return true;
+ }
+ }
+ }
+ lnet_net_unlock(cpt);
+
+ return false;
+}
+EXPORT_SYMBOL(LNetIsPeerLocal);
+
+/**
+ * Retrieve the struct lnet_process_id 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.
+ * struct lnet_process_id 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)
+LNetGetId(unsigned int index, struct lnet_process_id *id)
{
struct lnet_ni *ni;
- struct list_head *tmp;
+ struct lnet_net *net;
int cpt;
int rc = -ENOENT;
cpt = lnet_net_lock_current();
- list_for_each(tmp, &the_lnet.ln_nis) {
- if (index-- != 0)
- continue;
-
- ni = 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);
}
EXPORT_SYMBOL(LNetGetId);
-/**
- * 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)
+static int lnet_ping(struct lnet_process_id id, signed long timeout,
+ struct lnet_process_id __user *ids, int n_ids)
{
- snprintf(str, len, LPX64, h.cookie);
-}
-EXPORT_SYMBOL(LNetSnprintHandle);
-
-static int
-lnet_ping(lnet_process_id_t id, int timeout_ms, lnet_process_id_t __user *ids,
- int n_ids)
-{
- 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 int a_long_time = 60000; /* mS */
- int infosz;
- lnet_ping_info_t *info;
- lnet_process_id_t tmpid;
- int i;
- int nob;
- int rc;
- int rc2;
- sigset_t blocked;
-
- infosz = offsetof(lnet_ping_info_t, pi_ni[n_ids]);
+ struct lnet_handle_eq eqh;
+ struct lnet_handle_md mdh;
+ struct lnet_event event;
+ struct lnet_md md = { NULL };
+ int which;
+ int unlinked = 0;
+ int replied = 0;
+ const signed long a_long_time = msecs_to_jiffies(60 * MSEC_PER_SEC);
+ struct lnet_ping_buffer *pbuf;
+ struct lnet_process_id tmpid;
+ int i;
+ int nob;
+ int rc;
+ int rc2;
+ sigset_t blocked;
- if (n_ids <= 0 ||
- id.nid == LNET_NID_ANY ||
- timeout_ms > 500000 || /* arbitrary limit! */
- n_ids > 20) /* arbitrary limit! */
+ /* n_ids limit is arbitrary */
+ if (n_ids <= 0 || n_ids > lnet_interfaces_max || 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)
+ pbuf = lnet_ping_buffer_alloc(n_ids, GFP_NOFS);
+ if (!pbuf)
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;
+ goto fail_ping_buffer_decref;
}
/* initialize md content */
- md.start = info;
- md.length = infosz;
- md.threshold = 2; /*GET/REPLY*/
+ md.start = &pbuf->pb_info;
+ md.length = LNET_PING_INFO_SIZE(n_ids);
+ md.threshold = 2; /* GET/REPLY */
md.max_size = 0;
md.options = LNET_MD_TRUNCATE;
md.user_ptr = NULL;
rc = LNetMDBind(md, LNET_UNLINK, &mdh);
if (rc != 0) {
CERROR("Can't bind MD: %d\n", rc);
- goto out_1;
+ goto fail_free_eq;
}
rc = LNetGet(LNET_NID_ANY, mdh, id,
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;
+ timeout = a_long_time;
}
do {
if (unlinked)
blocked = cfs_block_allsigs();
- rc2 = LNetEQPoll(&eqh, 1, timeout_ms, &event, &which);
+ rc2 = LNetEQPoll(&eqh, 1, timeout, &event, &which);
if (unlinked)
cfs_restore_sigs(blocked);
(rc2 <= 0) ? -1 : event.status,
(rc2 > 0 && event.unlinked) ? " unlinked" : "");
- LASSERT(rc2 != -EOVERFLOW); /* can't miss anything */
+ LASSERT(rc2 != -EOVERFLOW); /* can't miss anything */
if (rc2 <= 0 || event.status != 0) {
/* timeout or error */
LNetMDUnlink(mdh);
/* No assertion (racing with network) */
unlinked = 1;
- timeout_ms = a_long_time;
+ timeout = a_long_time;
} else if (rc2 == 0) {
/* timed out waiting for unlink */
CWARN("ping %s: late network completion\n",
replied = 1;
rc = event.mlength;
}
-
} while (rc2 <= 0 || !event.unlinked);
if (!replied) {
CWARN("%s: Unexpected rc >= 0 but no reply!\n",
libcfs_id2str(id));
rc = -EIO;
- goto out_1;
+ goto fail_free_eq;
}
nob = rc;
- LASSERT(nob >= 0 && nob <= infosz);
+ LASSERT(nob >= 0 && nob <= LNET_PING_INFO_SIZE(n_ids));
- rc = -EPROTO; /* if I can't parse... */
+ 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;
+ goto fail_free_eq;
}
- if (info->pi_magic == __swab32(LNET_PROTO_PING_MAGIC)) {
- lnet_swap_pinginfo(info);
- } else if (info->pi_magic != LNET_PROTO_PING_MAGIC) {
+ if (pbuf->pb_info.pi_magic == __swab32(LNET_PROTO_PING_MAGIC)) {
+ lnet_swap_pinginfo(pbuf);
+ } else if (pbuf->pb_info.pi_magic != LNET_PROTO_PING_MAGIC) {
CERROR("%s: Unexpected magic %08x\n",
- libcfs_id2str(id), info->pi_magic);
- goto out_1;
+ libcfs_id2str(id), pbuf->pb_info.pi_magic);
+ goto fail_free_eq;
}
- if ((info->pi_features & LNET_PING_FEAT_NI_STATUS) == 0) {
+ if ((pbuf->pb_info.pi_features & LNET_PING_FEAT_NI_STATUS) == 0) {
CERROR("%s: ping w/o NI status: 0x%x\n",
- libcfs_id2str(id), info->pi_features);
- goto out_1;
+ libcfs_id2str(id), pbuf->pb_info.pi_features);
+ goto fail_free_eq;
}
- 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 < LNET_PING_INFO_SIZE(0)) {
+ CERROR("%s: Short reply %d(%d min)\n",
+ libcfs_id2str(id),
+ nob, (int)LNET_PING_INFO_SIZE(0));
+ goto fail_free_eq;
}
- if (info->pi_nnis < n_ids)
- n_ids = info->pi_nnis;
+ if (pbuf->pb_info.pi_nnis < n_ids)
+ n_ids = pbuf->pb_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 < LNET_PING_INFO_SIZE(n_ids)) {
+ CERROR("%s: Short reply %d(%d expected)\n",
+ libcfs_id2str(id),
+ nob, (int)LNET_PING_INFO_SIZE(n_ids));
+ goto fail_free_eq;
}
- rc = -EFAULT; /* If I SEGV... */
+ rc = -EFAULT; /* if I segv in copy_to_user()... */
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;
+ tmpid.pid = pbuf->pb_info.pi_pid;
+ tmpid.nid = pbuf->pb_info.pi_ni[i].ns_nid;
if (copy_to_user(&ids[i], &tmpid, sizeof(tmpid)))
- goto out_1;
+ goto fail_free_eq;
}
- rc = info->pi_nnis;
+ rc = pbuf->pb_info.pi_nnis;
- out_1:
+ fail_free_eq:
rc2 = LNetEQFree(eqh);
if (rc2 != 0)
CERROR("rc2 %d\n", rc2);
LASSERT(rc2 == 0);
- out_0:
- LIBCFS_FREE(info, infosz);
+ fail_ping_buffer_decref:
+ lnet_ping_buffer_decref(pbuf);
+ return rc;
+}
+
+static int
+lnet_discover(lnet_process_id_t id, __u32 force, lnet_process_id_t __user *ids,
+ int n_ids)
+{
+ struct lnet_peer_ni *lpni;
+ struct lnet_peer_ni *p;
+ struct lnet_peer *lp;
+ lnet_process_id_t *buf;
+ int cpt;
+ int i;
+ int rc;
+ int max_intf = lnet_interfaces_max;
+
+ if (n_ids <= 0 ||
+ id.nid == LNET_NID_ANY ||
+ n_ids > max_intf)
+ return -EINVAL;
+
+ if (id.pid == LNET_PID_ANY)
+ id.pid = LNET_PID_LUSTRE;
+
+ LIBCFS_ALLOC(buf, n_ids * sizeof(*buf));
+ if (!buf)
+ return -ENOMEM;
+
+ cpt = lnet_net_lock_current();
+ lpni = lnet_nid2peerni_locked(id.nid, LNET_NID_ANY, cpt);
+ if (IS_ERR(lpni)) {
+ rc = PTR_ERR(lpni);
+ goto out;
+ }
+
+ /*
+ * Clearing the NIDS_UPTODATE flag ensures the peer will
+ * be discovered, provided discovery has not been disabled.
+ */
+ lp = lpni->lpni_peer_net->lpn_peer;
+ spin_lock(&lp->lp_lock);
+ lp->lp_state &= ~LNET_PEER_NIDS_UPTODATE;
+ /* If the force flag is set, force a PING and PUSH as well. */
+ if (force)
+ lp->lp_state |= LNET_PEER_FORCE_PING | LNET_PEER_FORCE_PUSH;
+ spin_unlock(&lp->lp_lock);
+ rc = lnet_discover_peer_locked(lpni, cpt, true);
+ if (rc)
+ goto out_decref;
+
+ /* Peer may have changed. */
+ lp = lpni->lpni_peer_net->lpn_peer;
+ if (lp->lp_nnis < n_ids)
+ n_ids = lp->lp_nnis;
+
+ i = 0;
+ p = NULL;
+ while ((p = lnet_get_next_peer_ni_locked(lp, NULL, p)) != NULL) {
+ buf[i].pid = id.pid;
+ buf[i].nid = p->lpni_nid;
+ if (++i >= n_ids)
+ break;
+ }
+
+ lnet_net_unlock(cpt);
+
+ rc = -EFAULT;
+ if (copy_to_user(ids, buf, n_ids * sizeof(*buf)))
+ goto out_relock;
+ rc = n_ids;
+out_relock:
+ lnet_net_lock(cpt);
+out_decref:
+ lnet_peer_ni_decref_locked(lpni);
+out:
+ lnet_net_unlock(cpt);
+
return rc;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff