/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * 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 2008 Sun Microsystems, Inc. All rights reserved * Use is subject to license terms. */ /* * 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; 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)"); static int ntx = 256; CFS_MODULE_PARM(ntx, "i", int, 0444, "# of message descriptors"); static int credits = 64; 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"); static int fmr_pool_size = 512; CFS_MODULE_PARM(fmr_pool_size, "i", int, 0444, "size of the fmr pool (>= ntx / 4)"); 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"); static int pmr_pool_size = 512; CFS_MODULE_PARM(pmr_pool_size, "i", int, 0444, "size of the MR cache pmr pool"); kib_tunables_t kiblnd_tunables = { .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, }; #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM static char ipif_basename_space[32]; #ifndef HAVE_SYSCTL_UNNUMBERED 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 }; #else #define O2IBLND_SERVICE CTL_UNNUMBERED #define O2IBLND_CKSUM CTL_UNNUMBERED #define O2IBLND_TIMEOUT CTL_UNNUMBERED #define O2IBLND_NTX CTL_UNNUMBERED #define O2IBLND_CREDITS CTL_UNNUMBERED #define O2IBLND_PEER_TXCREDITS CTL_UNNUMBERED #define O2IBLND_PEER_CREDITS_HIW CTL_UNNUMBERED #define O2IBLND_PEER_RTRCREDITS CTL_UNNUMBERED #define O2IBLND_PEER_TIMEOUT CTL_UNNUMBERED #define O2IBLND_IPIF_BASENAME CTL_UNNUMBERED #define O2IBLND_RETRY_COUNT CTL_UNNUMBERED #define O2IBLND_RNR_RETRY_COUNT CTL_UNNUMBERED #define O2IBLND_KEEPALIVE CTL_UNNUMBERED #define O2IBLND_CONCURRENT_SENDS CTL_UNNUMBERED #define O2IBLND_IB_MTU CTL_UNNUMBERED #define O2IBLND_MAP_ON_DEMAND CTL_UNNUMBERED #define O2IBLND_FMR_POOL_SIZE CTL_UNNUMBERED #define O2IBLND_FMR_FLUSH_TRIGGER CTL_UNNUMBERED #define O2IBLND_FMR_CACHE CTL_UNNUMBERED #define O2IBLND_PMR_POOL_SIZE CTL_UNNUMBERED #endif static cfs_sysctl_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 }, {0} }; static cfs_sysctl_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) cfs_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(); }