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  */
  18
  19 #include "socklnd.h"
  20
  21 static int sock_timeout = 50;
  22 module_param(sock_timeout, int, 0644);
  23 MODULE_PARM_DESC(sock_timeout, "dead socket timeout (seconds)");
  24
  25 static int credits = 256;
  26 module_param(credits, int, 0444);
  27 MODULE_PARM_DESC(credits, "# concurrent sends");
  28
  29 static int peer_credits = 8;
  30 module_param(peer_credits, int, 0444);
  31 MODULE_PARM_DESC(peer_credits, "# concurrent sends to 1 peer");
  32
  33 static int peer_buffer_credits;
  34 module_param(peer_buffer_credits, int, 0444);
  35 MODULE_PARM_DESC(peer_buffer_credits, "# per-peer router buffer credits");
  36
  37 static int peer_timeout = 180;
  38 module_param(peer_timeout, int, 0444);
  39 MODULE_PARM_DESC(peer_timeout, "Seconds without aliveness news to declare peer dead (<=0 to disable)");
  40
  41 /*
  42  * Number of daemons in each thread pool which is percpt,
  43  * we will estimate reasonable value based on CPUs if it's not set.
  44  */
  45 static unsigned int nscheds;
  46 module_param(nscheds, int, 0444);
  47 MODULE_PARM_DESC(nscheds, "# scheduler daemons in each pool while starting");
  48
  49 static int nconnds = 4;
  50 module_param(nconnds, int, 0444);
  51 MODULE_PARM_DESC(nconnds, "# connection daemons while starting");
  52
  53 static int nconnds_max = 64;
  54 module_param(nconnds_max, int, 0444);
  55 MODULE_PARM_DESC(nconnds_max, "max # connection daemons");
  56
  57 static int min_reconnectms = 1000;
  58 module_param(min_reconnectms, int, 0644);
  59 MODULE_PARM_DESC(min_reconnectms, "min connection retry interval (mS)");
  60
  61 static int max_reconnectms = 60000;
  62 module_param(max_reconnectms, int, 0644);
  63 MODULE_PARM_DESC(max_reconnectms, "max connection retry interval (mS)");
  64
  65 # define DEFAULT_EAGER_ACK 0
  66 static int eager_ack = DEFAULT_EAGER_ACK;
  67 module_param(eager_ack, int, 0644);
  68 MODULE_PARM_DESC(eager_ack, "send tcp ack packets eagerly");
  69
  70 static int typed_conns = 1;
  71 module_param(typed_conns, int, 0444);
  72 MODULE_PARM_DESC(typed_conns, "use different sockets for bulk");
  73
  74 static int min_bulk = 1 << 10;
  75 module_param(min_bulk, int, 0644);
  76 MODULE_PARM_DESC(min_bulk, "smallest 'large' message");
  77
  78 # define DEFAULT_BUFFER_SIZE 0
  79 static int tx_buffer_size = DEFAULT_BUFFER_SIZE;
  80 module_param(tx_buffer_size, int, 0644);
  81 MODULE_PARM_DESC(tx_buffer_size, "socket tx buffer size (0 for system default)");
  82
  83 static int rx_buffer_size = DEFAULT_BUFFER_SIZE;
  84 module_param(rx_buffer_size, int, 0644);
  85 MODULE_PARM_DESC(rx_buffer_size, "socket rx buffer size (0 for system default)");
  86
  87 static int nagle;
  88 module_param(nagle, int, 0644);
  89 MODULE_PARM_DESC(nagle, "enable NAGLE?");
  90
  91 static int round_robin = 1;
  92 module_param(round_robin, int, 0644);
  93 MODULE_PARM_DESC(round_robin, "Round robin for multiple interfaces");
  94
  95 static int keepalive = 30;
  96 module_param(keepalive, int, 0644);
  97 MODULE_PARM_DESC(keepalive, "# seconds before send keepalive");
  98
  99 static int keepalive_idle = 30;
 100 module_param(keepalive_idle, int, 0644);
 101 MODULE_PARM_DESC(keepalive_idle, "# idle seconds before probe");
 102
 103 #define DEFAULT_KEEPALIVE_COUNT  5
 104 static int keepalive_count = DEFAULT_KEEPALIVE_COUNT;
 105 module_param(keepalive_count, int, 0644);
 106 MODULE_PARM_DESC(keepalive_count, "# missed probes == dead");
 107
 108 static int keepalive_intvl = 5;
 109 module_param(keepalive_intvl, int, 0644);
 110 MODULE_PARM_DESC(keepalive_intvl, "seconds between probes");
 111
 112 static int enable_csum;
 113 module_param(enable_csum, int, 0644);
 114 MODULE_PARM_DESC(enable_csum, "enable check sum");
 115
 116 static int inject_csum_error;
 117 module_param(inject_csum_error, int, 0644);
 118 MODULE_PARM_DESC(inject_csum_error, "set non-zero to inject a checksum error");
 119
 120 static int nonblk_zcack = 1;
 121 module_param(nonblk_zcack, int, 0644);
 122 MODULE_PARM_DESC(nonblk_zcack, "always send ZC-ACK on non-blocking connection");
 123
 124 static unsigned int zc_min_payload = 16 << 10;
 125 module_param(zc_min_payload, int, 0644);
 126 MODULE_PARM_DESC(zc_min_payload, "minimum payload size to zero copy");
 127
 128 static unsigned int zc_recv;
 129 module_param(zc_recv, int, 0644);
 130 MODULE_PARM_DESC(zc_recv, "enable ZC recv for Chelsio driver");
 131
 132 static unsigned int zc_recv_min_nfrags = 16;
 133 module_param(zc_recv_min_nfrags, int, 0644);
 134 MODULE_PARM_DESC(zc_recv_min_nfrags, "minimum # of fragments to enable ZC recv");
 135
 136 #if SOCKNAL_VERSION_DEBUG
 137 static int protocol = 3;
 138 module_param(protocol, int, 0644);
 139 MODULE_PARM_DESC(protocol, "protocol version");
 140 #endif
 141
 142 ksock_tunables_t ksocknal_tunables;
 143
 144 int ksocknal_tunables_init(void)
 145 {
 146         /* initialize ksocknal_tunables structure */
 147         ksocknal_tunables.ksnd_timeout            = &sock_timeout;
 148         ksocknal_tunables.ksnd_nscheds            = &nscheds;
 149         ksocknal_tunables.ksnd_nconnds            = &nconnds;
 150         ksocknal_tunables.ksnd_nconnds_max        = &nconnds_max;
 151         ksocknal_tunables.ksnd_min_reconnectms    = &min_reconnectms;
 152         ksocknal_tunables.ksnd_max_reconnectms    = &max_reconnectms;
 153         ksocknal_tunables.ksnd_eager_ack          = &eager_ack;
 154         ksocknal_tunables.ksnd_typed_conns        = &typed_conns;
 155         ksocknal_tunables.ksnd_min_bulk           = &min_bulk;
 156         ksocknal_tunables.ksnd_tx_buffer_size     = &tx_buffer_size;
 157         ksocknal_tunables.ksnd_rx_buffer_size     = &rx_buffer_size;
 158         ksocknal_tunables.ksnd_nagle              = &nagle;
 159         ksocknal_tunables.ksnd_round_robin        = &round_robin;
 160         ksocknal_tunables.ksnd_keepalive          = &keepalive;
 161         ksocknal_tunables.ksnd_keepalive_idle     = &keepalive_idle;
 162         ksocknal_tunables.ksnd_keepalive_count    = &keepalive_count;
 163         ksocknal_tunables.ksnd_keepalive_intvl    = &keepalive_intvl;
 164         ksocknal_tunables.ksnd_credits            = &credits;
 165         ksocknal_tunables.ksnd_peertxcredits      = &peer_credits;
 166         ksocknal_tunables.ksnd_peerrtrcredits     = &peer_buffer_credits;
 167         ksocknal_tunables.ksnd_peertimeout        = &peer_timeout;
 168         ksocknal_tunables.ksnd_enable_csum        = &enable_csum;
 169         ksocknal_tunables.ksnd_inject_csum_error  = &inject_csum_error;
 170         ksocknal_tunables.ksnd_nonblk_zcack       = &nonblk_zcack;
 171         ksocknal_tunables.ksnd_zc_min_payload     = &zc_min_payload;
 172         ksocknal_tunables.ksnd_zc_recv            = &zc_recv;
 173         ksocknal_tunables.ksnd_zc_recv_min_nfrags = &zc_recv_min_nfrags;
 174
 175 #if SOCKNAL_VERSION_DEBUG
 176         ksocknal_tunables.ksnd_protocol           = &protocol;
 177 #endif
 178
 179         if (*ksocknal_tunables.ksnd_zc_min_payload < (2 << 10))
 180                 *ksocknal_tunables.ksnd_zc_min_payload = 2 << 10;
 181
 182         return 0;
 183 };