| /* |
| * 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(); |
| } |