diff options
Diffstat (limited to 'drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_modparams.c')
-rw-r--r-- | drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_modparams.c | 493 |
1 files changed, 493 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_modparams.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_modparams.c new file mode 100644 index 000000000000..e21028b72302 --- /dev/null +++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_modparams.c @@ -0,0 +1,493 @@ +/* + * GPL HEADER START + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 only, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 for more details (a copy is included + * in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + * GPL HEADER END + */ +/* + * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + * + * Copyright (c) 2012, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + * + * lnet/klnds/o2iblnd/o2iblnd_modparams.c + * + * Author: Eric Barton <eric@bartonsoftware.com> + */ + +#include "o2iblnd.h" + +static int service = 987; +CFS_MODULE_PARM(service, "i", int, 0444, + "service number (within RDMA_PS_TCP)"); + +static int cksum = 0; +CFS_MODULE_PARM(cksum, "i", int, 0644, + "set non-zero to enable message (not RDMA) checksums"); + +static int timeout = 50; +CFS_MODULE_PARM(timeout, "i", int, 0644, + "timeout (seconds)"); + +/* Number of threads in each scheduler pool which is percpt, + * we will estimate reasonable value based on CPUs if it's set to zero. */ +static int nscheds; +CFS_MODULE_PARM(nscheds, "i", int, 0444, + "number of threads in each scheduler pool"); + +/* NB: this value is shared by all CPTs, it can grow at runtime */ +static int ntx = 512; +CFS_MODULE_PARM(ntx, "i", int, 0444, + "# of message descriptors allocated for each pool"); + +/* NB: this value is shared by all CPTs */ +static int credits = 256; +CFS_MODULE_PARM(credits, "i", int, 0444, + "# concurrent sends"); + +static int peer_credits = 8; +CFS_MODULE_PARM(peer_credits, "i", int, 0444, + "# concurrent sends to 1 peer"); + +static int peer_credits_hiw = 0; +CFS_MODULE_PARM(peer_credits_hiw, "i", int, 0444, + "when eagerly to return credits"); + +static int peer_buffer_credits = 0; +CFS_MODULE_PARM(peer_buffer_credits, "i", int, 0444, + "# per-peer router buffer credits"); + +static int peer_timeout = 180; +CFS_MODULE_PARM(peer_timeout, "i", int, 0444, + "Seconds without aliveness news to declare peer dead (<=0 to disable)"); + +static char *ipif_name = "ib0"; +CFS_MODULE_PARM(ipif_name, "s", charp, 0444, + "IPoIB interface name"); + +static int retry_count = 5; +CFS_MODULE_PARM(retry_count, "i", int, 0644, + "Retransmissions when no ACK received"); + +static int rnr_retry_count = 6; +CFS_MODULE_PARM(rnr_retry_count, "i", int, 0644, + "RNR retransmissions"); + +static int keepalive = 100; +CFS_MODULE_PARM(keepalive, "i", int, 0644, + "Idle time in seconds before sending a keepalive"); + +static int ib_mtu = 0; +CFS_MODULE_PARM(ib_mtu, "i", int, 0444, + "IB MTU 256/512/1024/2048/4096"); + +static int concurrent_sends = 0; +CFS_MODULE_PARM(concurrent_sends, "i", int, 0444, + "send work-queue sizing"); + +static int map_on_demand = 0; +CFS_MODULE_PARM(map_on_demand, "i", int, 0444, + "map on demand"); + +/* NB: this value is shared by all CPTs, it can grow at runtime */ +static int fmr_pool_size = 512; +CFS_MODULE_PARM(fmr_pool_size, "i", int, 0444, + "size of fmr pool on each CPT (>= ntx / 4)"); + +/* NB: this value is shared by all CPTs, it can grow at runtime */ +static int fmr_flush_trigger = 384; +CFS_MODULE_PARM(fmr_flush_trigger, "i", int, 0444, + "# dirty FMRs that triggers pool flush"); + +static int fmr_cache = 1; +CFS_MODULE_PARM(fmr_cache, "i", int, 0444, + "non-zero to enable FMR caching"); + +/* NB: this value is shared by all CPTs, it can grow at runtime */ +static int pmr_pool_size = 512; +CFS_MODULE_PARM(pmr_pool_size, "i", int, 0444, + "size of MR cache pmr pool on each CPT"); + +/* + * 0: disable failover + * 1: enable failover if necessary + * 2: force to failover (for debug) + */ +static int dev_failover = 0; +CFS_MODULE_PARM(dev_failover, "i", int, 0444, + "HCA failover for bonding (0 off, 1 on, other values reserved)"); + + +static int require_privileged_port = 0; +CFS_MODULE_PARM(require_privileged_port, "i", int, 0644, + "require privileged port when accepting connection"); + +static int use_privileged_port = 1; +CFS_MODULE_PARM(use_privileged_port, "i", int, 0644, + "use privileged port when initiating connection"); + +kib_tunables_t kiblnd_tunables = { + .kib_dev_failover = &dev_failover, + .kib_service = &service, + .kib_cksum = &cksum, + .kib_timeout = &timeout, + .kib_keepalive = &keepalive, + .kib_ntx = &ntx, + .kib_credits = &credits, + .kib_peertxcredits = &peer_credits, + .kib_peercredits_hiw = &peer_credits_hiw, + .kib_peerrtrcredits = &peer_buffer_credits, + .kib_peertimeout = &peer_timeout, + .kib_default_ipif = &ipif_name, + .kib_retry_count = &retry_count, + .kib_rnr_retry_count = &rnr_retry_count, + .kib_concurrent_sends = &concurrent_sends, + .kib_ib_mtu = &ib_mtu, + .kib_map_on_demand = &map_on_demand, + .kib_fmr_pool_size = &fmr_pool_size, + .kib_fmr_flush_trigger = &fmr_flush_trigger, + .kib_fmr_cache = &fmr_cache, + .kib_pmr_pool_size = &pmr_pool_size, + .kib_require_priv_port = &require_privileged_port, + .kib_use_priv_port = &use_privileged_port, + .kib_nscheds = &nscheds +}; + +#if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM + +static char ipif_basename_space[32]; + + +enum { + O2IBLND_SERVICE = 1, + O2IBLND_CKSUM, + O2IBLND_TIMEOUT, + O2IBLND_NTX, + O2IBLND_CREDITS, + O2IBLND_PEER_TXCREDITS, + O2IBLND_PEER_CREDITS_HIW, + O2IBLND_PEER_RTRCREDITS, + O2IBLND_PEER_TIMEOUT, + O2IBLND_IPIF_BASENAME, + O2IBLND_RETRY_COUNT, + O2IBLND_RNR_RETRY_COUNT, + O2IBLND_KEEPALIVE, + O2IBLND_CONCURRENT_SENDS, + O2IBLND_IB_MTU, + O2IBLND_MAP_ON_DEMAND, + O2IBLND_FMR_POOL_SIZE, + O2IBLND_FMR_FLUSH_TRIGGER, + O2IBLND_FMR_CACHE, + O2IBLND_PMR_POOL_SIZE, + O2IBLND_DEV_FAILOVER +}; + +static ctl_table_t kiblnd_ctl_table[] = { + { + .ctl_name = O2IBLND_SERVICE, + .procname = "service", + .data = &service, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_CKSUM, + .procname = "cksum", + .data = &cksum, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_TIMEOUT, + .procname = "timeout", + .data = &timeout, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_NTX, + .procname = "ntx", + .data = &ntx, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_CREDITS, + .procname = "credits", + .data = &credits, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_PEER_TXCREDITS, + .procname = "peer_credits", + .data = &peer_credits, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_PEER_CREDITS_HIW, + .procname = "peer_credits_hiw", + .data = &peer_credits_hiw, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_PEER_RTRCREDITS, + .procname = "peer_buffer_credits", + .data = &peer_buffer_credits, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_PEER_TIMEOUT, + .procname = "peer_timeout", + .data = &peer_timeout, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_IPIF_BASENAME, + .procname = "ipif_name", + .data = ipif_basename_space, + .maxlen = sizeof(ipif_basename_space), + .mode = 0444, + .proc_handler = &proc_dostring + }, + { + .ctl_name = O2IBLND_RETRY_COUNT, + .procname = "retry_count", + .data = &retry_count, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_RNR_RETRY_COUNT, + .procname = "rnr_retry_count", + .data = &rnr_retry_count, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_KEEPALIVE, + .procname = "keepalive", + .data = &keepalive, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_CONCURRENT_SENDS, + .procname = "concurrent_sends", + .data = &concurrent_sends, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_IB_MTU, + .procname = "ib_mtu", + .data = &ib_mtu, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_MAP_ON_DEMAND, + .procname = "map_on_demand", + .data = &map_on_demand, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + + { + .ctl_name = O2IBLND_FMR_POOL_SIZE, + .procname = "fmr_pool_size", + .data = &fmr_pool_size, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_FMR_FLUSH_TRIGGER, + .procname = "fmr_flush_trigger", + .data = &fmr_flush_trigger, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_FMR_CACHE, + .procname = "fmr_cache", + .data = &fmr_cache, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_PMR_POOL_SIZE, + .procname = "pmr_pool_size", + .data = &pmr_pool_size, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + { + .ctl_name = O2IBLND_DEV_FAILOVER, + .procname = "dev_failover", + .data = &dev_failover, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec + }, + {0} +}; + +static ctl_table_t kiblnd_top_ctl_table[] = { + { + .ctl_name = CTL_O2IBLND, + .procname = "o2iblnd", + .data = NULL, + .maxlen = 0, + .mode = 0555, + .child = kiblnd_ctl_table + }, + {0} +}; + +void +kiblnd_initstrtunable(char *space, char *str, int size) +{ + strncpy(space, str, size); + space[size-1] = 0; +} + +void +kiblnd_sysctl_init (void) +{ + kiblnd_initstrtunable(ipif_basename_space, ipif_name, + sizeof(ipif_basename_space)); + + kiblnd_tunables.kib_sysctl = + cfs_register_sysctl_table(kiblnd_top_ctl_table, 0); + + if (kiblnd_tunables.kib_sysctl == NULL) + CWARN("Can't setup /proc tunables\n"); +} + +void +kiblnd_sysctl_fini (void) +{ + if (kiblnd_tunables.kib_sysctl != NULL) + unregister_sysctl_table(kiblnd_tunables.kib_sysctl); +} + +#else + +void +kiblnd_sysctl_init (void) +{ +} + +void +kiblnd_sysctl_fini (void) +{ +} + +#endif + +int +kiblnd_tunables_init (void) +{ + if (kiblnd_translate_mtu(*kiblnd_tunables.kib_ib_mtu) < 0) { + CERROR("Invalid ib_mtu %d, expected 256/512/1024/2048/4096\n", + *kiblnd_tunables.kib_ib_mtu); + return -EINVAL; + } + + if (*kiblnd_tunables.kib_peertxcredits < IBLND_CREDITS_DEFAULT) + *kiblnd_tunables.kib_peertxcredits = IBLND_CREDITS_DEFAULT; + + if (*kiblnd_tunables.kib_peertxcredits > IBLND_CREDITS_MAX) + *kiblnd_tunables.kib_peertxcredits = IBLND_CREDITS_MAX; + + if (*kiblnd_tunables.kib_peertxcredits > *kiblnd_tunables.kib_credits) + *kiblnd_tunables.kib_peertxcredits = *kiblnd_tunables.kib_credits; + + if (*kiblnd_tunables.kib_peercredits_hiw < *kiblnd_tunables.kib_peertxcredits / 2) + *kiblnd_tunables.kib_peercredits_hiw = *kiblnd_tunables.kib_peertxcredits / 2; + + if (*kiblnd_tunables.kib_peercredits_hiw >= *kiblnd_tunables.kib_peertxcredits) + *kiblnd_tunables.kib_peercredits_hiw = *kiblnd_tunables.kib_peertxcredits - 1; + + if (*kiblnd_tunables.kib_map_on_demand < 0 || + *kiblnd_tunables.kib_map_on_demand > IBLND_MAX_RDMA_FRAGS) + *kiblnd_tunables.kib_map_on_demand = 0; /* disable map-on-demand */ + + if (*kiblnd_tunables.kib_map_on_demand == 1) + *kiblnd_tunables.kib_map_on_demand = 2; /* don't make sense to create map if only one fragment */ + + if (*kiblnd_tunables.kib_concurrent_sends == 0) { + if (*kiblnd_tunables.kib_map_on_demand > 0 && + *kiblnd_tunables.kib_map_on_demand <= IBLND_MAX_RDMA_FRAGS / 8) + *kiblnd_tunables.kib_concurrent_sends = (*kiblnd_tunables.kib_peertxcredits) * 2; + else + *kiblnd_tunables.kib_concurrent_sends = (*kiblnd_tunables.kib_peertxcredits); + } + + if (*kiblnd_tunables.kib_concurrent_sends > *kiblnd_tunables.kib_peertxcredits * 2) + *kiblnd_tunables.kib_concurrent_sends = *kiblnd_tunables.kib_peertxcredits * 2; + + if (*kiblnd_tunables.kib_concurrent_sends < *kiblnd_tunables.kib_peertxcredits / 2) + *kiblnd_tunables.kib_concurrent_sends = *kiblnd_tunables.kib_peertxcredits / 2; + + if (*kiblnd_tunables.kib_concurrent_sends < *kiblnd_tunables.kib_peertxcredits) { + CWARN("Concurrent sends %d is lower than message queue size: %d, " + "performance may drop slightly.\n", + *kiblnd_tunables.kib_concurrent_sends, *kiblnd_tunables.kib_peertxcredits); + } + + kiblnd_sysctl_init(); + return 0; +} + +void +kiblnd_tunables_fini (void) +{ + kiblnd_sysctl_fini(); +} |