lnet/klnds/qswlnd/qswlnd_modparams.c

   1 /*
   2  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
   3  *
   4  * Author: Eric Barton <eric@bartonsoftware.com>
   5  *
   6  * This file is part of Portals, http://www.lustre.org
   7  *
   8  * Portals is free software; you can redistribute it and/or
   9  * modify it under the terms of version 2 of the GNU General Public
  10  * License as published by the Free Software Foundation.
  11  *
  12  * Portals is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Portals; if not, write to the Free Software
  19  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 #include "qswlnd.h"
  24
  25 static int tx_maxcontig = (1<<10);
  26 CFS_MODULE_PARM(tx_maxcontig, "i", int, 0444,
  27                 "maximum payload to de-fragment");
  28
  29 static int ntxmsgs = 512;
  30 CFS_MODULE_PARM(ntxmsgs, "i", int, 0444,
  31                 "# tx msg buffers");
  32
  33 static int credits = 128;
  34 CFS_MODULE_PARM(credits, "i", int, 0444,
  35                 "# concurrent sends");
  36
  37 static int peer_credits = 8;
  38 CFS_MODULE_PARM(peer_credits, "i", int, 0444,
  39                 "# per-peer concurrent sends");
  40
  41 static int nrxmsgs_large = 64;
  42 CFS_MODULE_PARM(nrxmsgs_large, "i", int, 0444,
  43                 "# 'large' rx msg buffers");
  44
  45 static int ep_envelopes_large = 256;
  46 CFS_MODULE_PARM(ep_envelopes_large, "i", int, 0444,
  47                 "# 'large' rx msg envelope buffers");
  48
  49 static int nrxmsgs_small = 256;
  50 CFS_MODULE_PARM(nrxmsgs_small, "i", int, 0444,
  51                 "# 'small' rx msg buffers");
  52
  53 static int ep_envelopes_small = 2048;
  54 CFS_MODULE_PARM(ep_envelopes_small, "i", int, 0444,
  55                 "# 'small' rx msg envelope buffers");
  56
  57 static int optimized_puts = (32<<10);
  58 CFS_MODULE_PARM(optimized_puts, "i", int, 0644,
  59                 "zero-copy puts >= this size");
  60
  61 static int optimized_gets = 2048;
  62 CFS_MODULE_PARM(optimized_gets, "i", int, 0644,
  63                 "zero-copy gets >= this size");
  64
  65 #if KQSW_CKSUM
  66 static int inject_csum_error = 0;
  67 CFS_MODULE_PARM(inject_csum_error, "i", int, 0644,
  68                 "test checksumming");
  69 #endif
  70
  71 kqswnal_tunables_t kqswnal_tunables = {
  72         .kqn_tx_maxcontig       = &tx_maxcontig,
  73         .kqn_ntxmsgs            = &ntxmsgs,
  74         .kqn_credits            = &credits,
  75         .kqn_peercredits        = &peer_credits,
  76         .kqn_nrxmsgs_large      = &nrxmsgs_large,
  77         .kqn_ep_envelopes_large = &ep_envelopes_large,
  78         .kqn_nrxmsgs_small      = &nrxmsgs_small,
  79         .kqn_ep_envelopes_small = &ep_envelopes_small,
  80         .kqn_optimized_puts     = &optimized_puts,
  81         .kqn_optimized_gets     = &optimized_gets,
  82 #if KQSW_CKSUM
  83         .kqn_inject_csum_error  = &inject_csum_error,
  84 #endif
  85 };
  86
  87 #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
  88
  89 static struct ctl_table kqswnal_ctl_table[] = {
  90         {
  91                 INIT_CTL_NAME
  92                 .procname       = "tx_maxcontig",
  93                 .data           = &tx_maxcontig,
  94                 .maxlen         = sizeof (int),
  95                 .mode           = 0444,
  96                 .proc_handler   = &proc_dointvec
  97         },
  98         {
  99                 INIT_CTL_NAME
 100                 .procname       = "ntxmsgs",
 101                 .data           = &ntxmsgs,
 102                 .maxlen         = sizeof (int),
 103                 .mode           = 0444,
 104                 .proc_handler   = &proc_dointvec
 105         },
 106         {
 107                 INIT_CTL_NAME
 108                 .procname       = "credits",
 109                 .data           = &credits,
 110                 .maxlen         = sizeof (int),
 111                 .mode           = 0444,
 112                 .proc_handler   = &proc_dointvec
 113         },
 114         {
 115                 INIT_CTL_NAME
 116                 .procname       = "peer_credits",
 117                 .data           = &peer_credits,
 118                 .maxlen         = sizeof (int),
 119                 .mode           = 0444,
 120                 .proc_handler   = &proc_dointvec
 121         },
 122         {
 123                 INIT_CTL_NAME
 124                 .procname       = "nrxmsgs_large",
 125                 .data           = &nrxmsgs_large,
 126                 .maxlen         = sizeof (int),
 127                 .mode           = 0444,
 128                 .proc_handler   = &proc_dointvec
 129         },
 130         {
 131                 INIT_CTL_NAME
 132                 .procname       = "ep_envelopes_large",
 133                 .data           = &ep_envelopes_large,
 134                 .maxlen         = sizeof (int),
 135                 .mode           = 0444,
 136                 .proc_handler   = &proc_dointvec
 137         },
 138         {
 139                 INIT_CTL_NAME
 140                 .procname       = "nrxmsgs_small",
 141                 .data           = &nrxmsgs_small,
 142                 .maxlen         = sizeof (int),
 143                 .mode           = 0444,
 144                 .proc_handler   = &proc_dointvec
 145         },
 146         {
 147                 INIT_CTL_NAME
 148                 .procname       = "ep_envelopes_small",
 149                 .data           = &ep_envelopes_small,
 150                 .maxlen         = sizeof (int),
 151                 .mode           = 0444,
 152                 .proc_handler   = &proc_dointvec
 153         },
 154         {
 155                 INIT_CTL_NAME
 156                 .procname       = "optimized_puts",
 157                 .data           = &optimized_puts,
 158                 .maxlen         = sizeof (int),
 159                 .mode           = 0644,
 160                 .proc_handler   = &proc_dointvec
 161         },
 162         {
 163                 INIT_CTL_NAME
 164                 .procname       = "optimized_gets",
 165                 .data           = &optimized_gets,
 166                 .maxlen         = sizeof (int),
 167                 .mode           = 0644,
 168                 .proc_handler   = &proc_dointvec
 169         },
 170 #if KQSW_CKSUM
 171         {
 172                 INIT_CTL_NAME
 173                 .procname       = "inject_csum_error",
 174                 .data           = &inject_csum_error,
 175                 .maxlen         = sizeof (int),
 176                 .mode           = 0644,
 177                 .proc_handler   = &proc_dointvec
 178         },
 179 #endif
 180         { 0 }
 181 };
 182
 183 static struct ctl_table kqswnal_top_ctl_table[] = {
 184         {
 185                 INIT_CTL_NAME
 186                 .procname       = "qswnal",
 187                 .data           = NULL,
 188                 .maxlen         = 0,
 189                 .mode           = 0555,
 190                 .child          = kqswnal_ctl_table
 191         },
 192         { 0 }
 193 };
 194
 195 int
 196 kqswnal_tunables_init ()
 197 {
 198         kqswnal_tunables.kqn_sysctl =
 199                 register_sysctl_table(kqswnal_top_ctl_table);
 200
 201         if (kqswnal_tunables.kqn_sysctl == NULL)
 202                 CWARN("Can't setup /proc tunables\n");
 203
 204         return 0;
 205 }
 206
 207 void kqswnal_tunables_fini()
 208 {
 209         if (kqswnal_tunables.kqn_sysctl != NULL)
 210                 unregister_sysctl_table(kqswnal_tunables.kqn_sysctl);
 211 }
 212 #else
 213 int
 214 kqswnal_tunables_init ()
 215 {
 216         return 0;
 217 }
 218
 219 void
 220 kqswnal_tunables_fini ()
 221 {
 222 }
 223 #endif