2 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
4 * Copyright (c) 2011, 2012, Intel Corporation.
6 * Author: Eric Barton <eric@bartonsoftware.com>
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.
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.
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.
24 static int sock_timeout = 50;
25 CFS_MODULE_PARM(sock_timeout, "i", int, 0644,
26 "dead socket timeout (seconds)");
28 static int credits = 256;
29 CFS_MODULE_PARM(credits, "i", int, 0444,
30 "# concurrent sends");
32 static int peer_credits = 8;
33 CFS_MODULE_PARM(peer_credits, "i", int, 0444,
34 "# concurrent sends to 1 peer");
36 static int peer_buffer_credits = 0;
37 CFS_MODULE_PARM(peer_buffer_credits, "i", int, 0444,
38 "# per-peer router buffer credits");
40 static int peer_timeout = 180;
41 CFS_MODULE_PARM(peer_timeout, "i", int, 0444,
42 "Seconds without aliveness news to declare peer dead (<=0 to disable)");
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 CFS_MODULE_PARM(nscheds, "i", int, 0444,
48 "# scheduler daemons in each pool while starting");
50 static int nconnds = 4;
51 CFS_MODULE_PARM(nconnds, "i", int, 0444,
52 "# connection daemons while starting");
54 static int nconnds_max = 64;
55 CFS_MODULE_PARM(nconnds_max, "i", int, 0444,
56 "max # connection daemons");
58 static int min_reconnectms = 1000;
59 CFS_MODULE_PARM(min_reconnectms, "i", int, 0644,
60 "min connection retry interval (mS)");
62 static int max_reconnectms = 60000;
63 CFS_MODULE_PARM(max_reconnectms, "i", int, 0644,
64 "max connection retry interval (mS)");
67 CFS_MODULE_PARM(eager_ack, "i", int, 0644,
68 "send tcp ack packets eagerly");
70 static int typed_conns = 1;
71 CFS_MODULE_PARM(typed_conns, "i", int, 0444,
72 "use different sockets for bulk");
74 static int min_bulk = (1<<10);
75 CFS_MODULE_PARM(min_bulk, "i", int, 0644,
76 "smallest 'large' message");
78 # define DEFAULT_BUFFER_SIZE 0
79 static int tx_buffer_size = DEFAULT_BUFFER_SIZE;
80 CFS_MODULE_PARM(tx_buffer_size, "i", int, 0644,
81 "socket tx buffer size (0 for system default)");
83 static int rx_buffer_size = DEFAULT_BUFFER_SIZE;
84 CFS_MODULE_PARM(rx_buffer_size, "i", int, 0644,
85 "socket rx buffer size (0 for system default)");
88 CFS_MODULE_PARM(nagle, "i", int, 0644,
91 static int round_robin = 1;
92 CFS_MODULE_PARM(round_robin, "i", int, 0644,
93 "Round robin for multiple interfaces");
95 static int keepalive = 30;
96 CFS_MODULE_PARM(keepalive, "i", int, 0644,
97 "# seconds before send keepalive");
99 static int keepalive_idle = 30;
100 CFS_MODULE_PARM(keepalive_idle, "i", int, 0644,
101 "# idle seconds before probe");
103 #define DEFAULT_KEEPALIVE_COUNT 5
104 static int keepalive_count = DEFAULT_KEEPALIVE_COUNT;
105 CFS_MODULE_PARM(keepalive_count, "i", int, 0644,
106 "# missed probes == dead");
108 static int keepalive_intvl = 5;
109 CFS_MODULE_PARM(keepalive_intvl, "i", int, 0644,
110 "seconds between probes");
112 static int enable_csum = 0;
113 CFS_MODULE_PARM(enable_csum, "i", int, 0644,
116 static int inject_csum_error = 0;
117 CFS_MODULE_PARM(inject_csum_error, "i", int, 0644,
118 "set non-zero to inject a checksum error");
120 static int enable_irq_affinity = 0;
121 CFS_MODULE_PARM(enable_irq_affinity, "i", int, 0644,
122 "enable IRQ affinity");
125 static int nonblk_zcack = 1;
126 CFS_MODULE_PARM(nonblk_zcack, "i", int, 0644,
127 "always send ZC-ACK on non-blocking connection");
129 static unsigned int zc_min_payload = (16 << 10);
130 CFS_MODULE_PARM(zc_min_payload, "i", int, 0644,
131 "minimum payload size to zero copy");
133 static unsigned int zc_recv = 0;
134 CFS_MODULE_PARM(zc_recv, "i", int, 0644,
135 "enable ZC recv for Chelsio driver");
137 static unsigned int zc_recv_min_nfrags = 16;
138 CFS_MODULE_PARM(zc_recv_min_nfrags, "i", int, 0644,
139 "minimum # of fragments to enable ZC recv");
141 #ifdef SOCKNAL_BACKOFF
142 static int backoff_init = 3;
143 CFS_MODULE_PARM(backoff_init, "i", int, 0644,
144 "seconds for initial tcp backoff");
146 static int backoff_max = 3;
147 CFS_MODULE_PARM(backoff_max, "i", int, 0644,
148 "seconds for maximum tcp backoff");
151 #if SOCKNAL_VERSION_DEBUG
152 static int protocol = 3;
153 CFS_MODULE_PARM(protocol, "i", int, 0644,
157 ksock_tunables_t ksocknal_tunables;
159 int ksocknal_tunables_init(void)
162 /* initialize ksocknal_tunables structure */
163 ksocknal_tunables.ksnd_timeout = &sock_timeout;
164 ksocknal_tunables.ksnd_nscheds = &nscheds;
165 ksocknal_tunables.ksnd_nconnds = &nconnds;
166 ksocknal_tunables.ksnd_nconnds_max = &nconnds_max;
167 ksocknal_tunables.ksnd_min_reconnectms = &min_reconnectms;
168 ksocknal_tunables.ksnd_max_reconnectms = &max_reconnectms;
169 ksocknal_tunables.ksnd_eager_ack = &eager_ack;
170 ksocknal_tunables.ksnd_typed_conns = &typed_conns;
171 ksocknal_tunables.ksnd_min_bulk = &min_bulk;
172 ksocknal_tunables.ksnd_tx_buffer_size = &tx_buffer_size;
173 ksocknal_tunables.ksnd_rx_buffer_size = &rx_buffer_size;
174 ksocknal_tunables.ksnd_nagle = &nagle;
175 ksocknal_tunables.ksnd_round_robin = &round_robin;
176 ksocknal_tunables.ksnd_keepalive = &keepalive;
177 ksocknal_tunables.ksnd_keepalive_idle = &keepalive_idle;
178 ksocknal_tunables.ksnd_keepalive_count = &keepalive_count;
179 ksocknal_tunables.ksnd_keepalive_intvl = &keepalive_intvl;
180 ksocknal_tunables.ksnd_credits = &credits;
181 ksocknal_tunables.ksnd_peertxcredits = &peer_credits;
182 ksocknal_tunables.ksnd_peerrtrcredits = &peer_buffer_credits;
183 ksocknal_tunables.ksnd_peertimeout = &peer_timeout;
184 ksocknal_tunables.ksnd_enable_csum = &enable_csum;
185 ksocknal_tunables.ksnd_inject_csum_error = &inject_csum_error;
186 ksocknal_tunables.ksnd_nonblk_zcack = &nonblk_zcack;
187 ksocknal_tunables.ksnd_zc_min_payload = &zc_min_payload;
188 ksocknal_tunables.ksnd_zc_recv = &zc_recv;
189 ksocknal_tunables.ksnd_zc_recv_min_nfrags = &zc_recv_min_nfrags;
192 if (enable_irq_affinity) {
193 CWARN("irq_affinity is removed from socklnd because modern "
194 "computer always has fast CPUs and more cores than "
195 "# NICs, although you still can set irq_affinity by "
196 "another way, please check manual for details.\n");
198 ksocknal_tunables.ksnd_irq_affinity = &enable_irq_affinity;
201 #ifdef SOCKNAL_BACKOFF
202 ksocknal_tunables.ksnd_backoff_init = &backoff_init;
203 ksocknal_tunables.ksnd_backoff_max = &backoff_max;
206 #if SOCKNAL_VERSION_DEBUG
207 ksocknal_tunables.ksnd_protocol = &protocol;
210 #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
211 ksocknal_tunables.ksnd_sysctl = NULL;
214 if (*ksocknal_tunables.ksnd_zc_min_payload < (2 << 10))
215 *ksocknal_tunables.ksnd_zc_min_payload = (2 << 10);
217 /* initialize platform-sepcific tunables */
218 return ksocknal_lib_tunables_init();
221 void ksocknal_tunables_fini(void)
223 ksocknal_lib_tunables_fini();