kernel/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_modparams.c

   1 /*
   2  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
   3  *
   4  * Copyright (c) 2011, 2012, Intel Corporation.
   5  *
   6  *   Author: Eric Barton <eric@bartonsoftware.com>
   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 #include "socklnd.h"
  23
  24 static int sock_timeout = 50;
  25 module_param(sock_timeout, int, 0644);
  26 MODULE_PARM_DESC(sock_timeout, "dead socket timeout (seconds)");
  27
  28 static int credits = 256;
  29 module_param(credits, int, 0444);
  30 MODULE_PARM_DESC(credits, "# concurrent sends");
  31
  32 static int peer_credits = 8;
  33 module_param(peer_credits, int, 0444);
  34 MODULE_PARM_DESC(peer_credits, "# concurrent sends to 1 peer");
  35
  36 static int peer_buffer_credits;
  37 module_param(peer_buffer_credits, int, 0444);
  38 MODULE_PARM_DESC(peer_buffer_credits, "# per-peer router buffer credits");
  39
  40 static int peer_timeout = 180;
  41 module_param(peer_timeout, int, 0444);
  42 MODULE_PARM_DESC(peer_timeout, "Seconds without aliveness news to declare peer dead (<=0 to disable)");
  43
  44 /* Number of daemons in each thread pool which is percpt,
  45  * we will estimate reasonable value based on CPUs if it's not set. */
  46 static unsigned int nscheds;
  47 module_param(nscheds, int, 0444);
  48 MODULE_PARM_DESC(nscheds, "# scheduler daemons in each pool while starting");
  49
  50 static int nconnds = 4;
  51 module_param(nconnds, int, 0444);
  52 MODULE_PARM_DESC(nconnds, "# connection daemons while starting");
  53
  54 static int nconnds_max = 64;
  55 module_param(nconnds_max, int, 0444);
  56 MODULE_PARM_DESC(nconnds_max, "max # connection daemons");
  57
  58 static int min_reconnectms = 1000;
  59 module_param(min_reconnectms, int, 0644);
  60 MODULE_PARM_DESC(min_reconnectms, "min connection retry interval (mS)");
  61
  62 static int max_reconnectms = 60000;
  63 module_param(max_reconnectms, int, 0644);
  64 MODULE_PARM_DESC(max_reconnectms, "max connection retry interval (mS)");
  65
  66 # define DEFAULT_EAGER_ACK 0
  67 static int eager_ack = DEFAULT_EAGER_ACK;
  68 module_param(eager_ack, int, 0644);
  69 MODULE_PARM_DESC(eager_ack, "send tcp ack packets eagerly");
  70
  71 static int typed_conns = 1;
  72 module_param(typed_conns, int, 0444);
  73 MODULE_PARM_DESC(typed_conns, "use different sockets for bulk");
  74
  75 static int min_bulk = 1<<10;
  76 module_param(min_bulk, int, 0644);
  77 MODULE_PARM_DESC(min_bulk, "smallest 'large' message");
  78
  79 # define DEFAULT_BUFFER_SIZE 0
  80 static int tx_buffer_size = DEFAULT_BUFFER_SIZE;
  81 module_param(tx_buffer_size, int, 0644);
  82 MODULE_PARM_DESC(tx_buffer_size, "socket tx buffer size (0 for system default)");
  83
  84 static int rx_buffer_size = DEFAULT_BUFFER_SIZE;
  85 module_param(rx_buffer_size, int, 0644);
  86 MODULE_PARM_DESC(rx_buffer_size, "socket rx buffer size (0 for system default)");
  87
  88 static int nagle;
  89 module_param(nagle, int, 0644);
  90 MODULE_PARM_DESC(nagle, "enable NAGLE?");
  91
  92 static int round_robin = 1;
  93 module_param(round_robin, int, 0644);
  94 MODULE_PARM_DESC(round_robin, "Round robin for multiple interfaces");
  95
  96 static int keepalive = 30;
  97 module_param(keepalive, int, 0644);
  98 MODULE_PARM_DESC(keepalive, "# seconds before send keepalive");
  99
 100 static int keepalive_idle = 30;
 101 module_param(keepalive_idle, int, 0644);
 102 MODULE_PARM_DESC(keepalive_idle, "# idle seconds before probe");
 103
 104 #define DEFAULT_KEEPALIVE_COUNT  5
 105 static int keepalive_count = DEFAULT_KEEPALIVE_COUNT;
 106 module_param(keepalive_count, int, 0644);
 107 MODULE_PARM_DESC(keepalive_count, "# missed probes == dead");
 108
 109 static int keepalive_intvl = 5;
 110 module_param(keepalive_intvl, int, 0644);
 111 MODULE_PARM_DESC(keepalive_intvl, "seconds between probes");
 112
 113 static int enable_csum;
 114 module_param(enable_csum, int, 0644);
 115 MODULE_PARM_DESC(enable_csum, "enable check sum");
 116
 117 static int inject_csum_error;
 118 module_param(inject_csum_error, int, 0644);
 119 MODULE_PARM_DESC(inject_csum_error, "set non-zero to inject a checksum error");
 120
 121 static int nonblk_zcack = 1;
 122 module_param(nonblk_zcack, int, 0644);
 123 MODULE_PARM_DESC(nonblk_zcack, "always send ZC-ACK on non-blocking connection");
 124
 125 static unsigned int zc_min_payload = 16 << 10;
 126 module_param(zc_min_payload, int, 0644);
 127 MODULE_PARM_DESC(zc_min_payload, "minimum payload size to zero copy");
 128
 129 static unsigned int zc_recv;
 130 module_param(zc_recv, int, 0644);
 131 MODULE_PARM_DESC(zc_recv, "enable ZC recv for Chelsio driver");
 132
 133 static unsigned int zc_recv_min_nfrags = 16;
 134 module_param(zc_recv_min_nfrags, int, 0644);
 135 MODULE_PARM_DESC(zc_recv_min_nfrags, "minimum # of fragments to enable ZC recv");
 136
 137
 138 #if SOCKNAL_VERSION_DEBUG
 139 static int protocol = 3;
 140 module_param(protocol, int, 0644);
 141 MODULE_PARM_DESC(protocol, "protocol version");
 142 #endif
 143
 144 ksock_tunables_t ksocknal_tunables;
 145
 146 int ksocknal_tunables_init(void)
 147 {
 148
 149         /* initialize ksocknal_tunables structure */
 150         ksocknal_tunables.ksnd_timeout      = &sock_timeout;
 151         ksocknal_tunables.ksnd_nscheds            = &nscheds;
 152         ksocknal_tunables.ksnd_nconnds      = &nconnds;
 153         ksocknal_tunables.ksnd_nconnds_max      = &nconnds_max;
 154         ksocknal_tunables.ksnd_min_reconnectms    = &min_reconnectms;
 155         ksocknal_tunables.ksnd_max_reconnectms    = &max_reconnectms;
 156         ksocknal_tunables.ksnd_eager_ack          = &eager_ack;
 157         ksocknal_tunables.ksnd_typed_conns      = &typed_conns;
 158         ksocknal_tunables.ksnd_min_bulk    = &min_bulk;
 159         ksocknal_tunables.ksnd_tx_buffer_size     = &tx_buffer_size;
 160         ksocknal_tunables.ksnd_rx_buffer_size     = &rx_buffer_size;
 161         ksocknal_tunables.ksnd_nagle          = &nagle;
 162         ksocknal_tunables.ksnd_round_robin      = &round_robin;
 163         ksocknal_tunables.ksnd_keepalive          = &keepalive;
 164         ksocknal_tunables.ksnd_keepalive_idle     = &keepalive_idle;
 165         ksocknal_tunables.ksnd_keepalive_count    = &keepalive_count;
 166         ksocknal_tunables.ksnd_keepalive_intvl    = &keepalive_intvl;
 167         ksocknal_tunables.ksnd_credits      = &credits;
 168         ksocknal_tunables.ksnd_peertxcredits      = &peer_credits;
 169         ksocknal_tunables.ksnd_peerrtrcredits     = &peer_buffer_credits;
 170         ksocknal_tunables.ksnd_peertimeout      = &peer_timeout;
 171         ksocknal_tunables.ksnd_enable_csum      = &enable_csum;
 172         ksocknal_tunables.ksnd_inject_csum_error  = &inject_csum_error;
 173         ksocknal_tunables.ksnd_nonblk_zcack       = &nonblk_zcack;
 174         ksocknal_tunables.ksnd_zc_min_payload     = &zc_min_payload;
 175         ksocknal_tunables.ksnd_zc_recv      = &zc_recv;
 176         ksocknal_tunables.ksnd_zc_recv_min_nfrags = &zc_recv_min_nfrags;
 177
 178
 179
 180 #if SOCKNAL_VERSION_DEBUG
 181         ksocknal_tunables.ksnd_protocol    = &protocol;
 182 #endif
 183
 184         if (*ksocknal_tunables.ksnd_zc_min_payload < (2 << 10))
 185                 *ksocknal_tunables.ksnd_zc_min_payload = 2 << 10;
 186
 187         return 0;
 188 };