/* * 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 */ #include "o2iblnd.h" static int service = 987; module_param(service, int, 0444); MODULE_PARM_DESC(service, "service number (within RDMA_PS_TCP)"); static int cksum; module_param(cksum, int, 0644); MODULE_PARM_DESC(cksum, "set non-zero to enable message (not RDMA) checksums"); static int timeout = 50; module_param(timeout, int, 0644); MODULE_PARM_DESC(timeout, "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; module_param(nscheds, int, 0444); MODULE_PARM_DESC(nscheds, "number of threads in each scheduler pool"); /* NB: this value is shared by all CPTs, it can grow at runtime */ static int ntx = 512; module_param(ntx, int, 0444); MODULE_PARM_DESC(ntx, "# of message descriptors allocated for each pool"); /* NB: this value is shared by all CPTs */ static int credits = 256; module_param(credits, int, 0444); MODULE_PARM_DESC(credits, "# concurrent sends"); static int peer_credits = 8; module_param(peer_credits, int, 0444); MODULE_PARM_DESC(peer_credits, "# concurrent sends to 1 peer"); static int peer_credits_hiw; module_param(peer_credits_hiw, int, 0444); MODULE_PARM_DESC(peer_credits_hiw, "when eagerly to return credits"); static int peer_buffer_credits; module_param(peer_buffer_credits, int, 0444); MODULE_PARM_DESC(peer_buffer_credits, "# per-peer router buffer credits"); static int peer_timeout = 180; module_param(peer_timeout, int, 0444); MODULE_PARM_DESC(peer_timeout, "Seconds without aliveness news to declare peer dead (<=0 to disable)"); static char *ipif_name = "ib0"; module_param(ipif_name, charp, 0444); MODULE_PARM_DESC(ipif_name, "IPoIB interface name"); static int retry_count = 5; module_param(retry_count, int, 0644); MODULE_PARM_DESC(retry_count, "Retransmissions when no ACK received"); static int rnr_retry_count = 6; module_param(rnr_retry_count, int, 0644); MODULE_PARM_DESC(rnr_retry_count, "RNR retransmissions"); static int keepalive = 100; module_param(keepalive, int, 0644); MODULE_PARM_DESC(keepalive, "Idle time in seconds before sending a keepalive"); static int ib_mtu; module_param(ib_mtu, int, 0444); MODULE_PARM_DESC(ib_mtu, "IB MTU 256/512/1024/2048/4096"); static int concurrent_sends; module_param(concurrent_sends, int, 0444); MODULE_PARM_DESC(concurrent_sends, "send work-queue sizing"); static int map_on_demand; module_param(map_on_demand, int, 0444); MODULE_PARM_DESC(map_on_demand, "map on demand"); /* NB: this value is shared by all CPTs, it can grow at runtime */ static int fmr_pool_size = 512; module_param(fmr_pool_size, int, 0444); MODULE_PARM_DESC(fmr_pool_size, "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; module_param(fmr_flush_trigger, int, 0444); MODULE_PARM_DESC(fmr_flush_trigger, "# dirty FMRs that triggers pool flush"); static int fmr_cache = 1; module_param(fmr_cache, int, 0444); MODULE_PARM_DESC(fmr_cache, "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; module_param(pmr_pool_size, int, 0444); MODULE_PARM_DESC(pmr_pool_size, "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; module_param(dev_failover, int, 0444); MODULE_PARM_DESC(dev_failover, "HCA failover for bonding (0 off, 1 on, other values reserved)"); static int require_privileged_port; module_param(require_privileged_port, int, 0644); MODULE_PARM_DESC(require_privileged_port, "require privileged port when accepting connection"); static int use_privileged_port = 1; module_param(use_privileged_port, int, 0644); MODULE_PARM_DESC(use_privileged_port, "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 }; 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); } return 0; }