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
24static int sock_timeout = 50;
25module_param(sock_timeout, int, 0644);
26MODULE_PARM_DESC(sock_timeout, "dead socket timeout (seconds)");
27
28static int credits = 256;
29module_param(credits, int, 0444);
30MODULE_PARM_DESC(credits, "# concurrent sends");
31
32static int peer_credits = 8;
33module_param(peer_credits, int, 0444);
34MODULE_PARM_DESC(peer_credits, "# concurrent sends to 1 peer");
35
36static int peer_buffer_credits;
37module_param(peer_buffer_credits, int, 0444);
38MODULE_PARM_DESC(peer_buffer_credits, "# per-peer router buffer credits");
39
40static int peer_timeout = 180;
41module_param(peer_timeout, int, 0444);
42MODULE_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. */
46static unsigned int nscheds;
47module_param(nscheds, int, 0444);
48MODULE_PARM_DESC(nscheds, "# scheduler daemons in each pool while starting");
49
50static int nconnds = 4;
51module_param(nconnds, int, 0444);
52MODULE_PARM_DESC(nconnds, "# connection daemons while starting");
53
54static int nconnds_max = 64;
55module_param(nconnds_max, int, 0444);
56MODULE_PARM_DESC(nconnds_max, "max # connection daemons");
57
58static int min_reconnectms = 1000;
59module_param(min_reconnectms, int, 0644);
60MODULE_PARM_DESC(min_reconnectms, "min connection retry interval (mS)");
61
62static int max_reconnectms = 60000;
63module_param(max_reconnectms, int, 0644);
64MODULE_PARM_DESC(max_reconnectms, "max connection retry interval (mS)");
65
66# define DEFAULT_EAGER_ACK 0
67static int eager_ack = DEFAULT_EAGER_ACK;
68module_param(eager_ack, int, 0644);
69MODULE_PARM_DESC(eager_ack, "send tcp ack packets eagerly");
70
71static int typed_conns = 1;
72module_param(typed_conns, int, 0444);
73MODULE_PARM_DESC(typed_conns, "use different sockets for bulk");
74
75static int min_bulk = (1<<10);
76module_param(min_bulk, int, 0644);
77MODULE_PARM_DESC(min_bulk, "smallest 'large' message");
78
79# define DEFAULT_BUFFER_SIZE 0
80static int tx_buffer_size = DEFAULT_BUFFER_SIZE;
81module_param(tx_buffer_size, int, 0644);
82MODULE_PARM_DESC(tx_buffer_size, "socket tx buffer size (0 for system default)");
83
84static int rx_buffer_size = DEFAULT_BUFFER_SIZE;
85module_param(rx_buffer_size, int, 0644);
86MODULE_PARM_DESC(rx_buffer_size, "socket rx buffer size (0 for system default)");
87
88static int nagle;
89module_param(nagle, int, 0644);
90MODULE_PARM_DESC(nagle, "enable NAGLE?");
91
92static int round_robin = 1;
93module_param(round_robin, int, 0644);
94MODULE_PARM_DESC(round_robin, "Round robin for multiple interfaces");
95
96static int keepalive = 30;
97module_param(keepalive, int, 0644);
98MODULE_PARM_DESC(keepalive, "# seconds before send keepalive");
99
100static int keepalive_idle = 30;
101module_param(keepalive_idle, int, 0644);
102MODULE_PARM_DESC(keepalive_idle, "# idle seconds before probe");
103
104#define DEFAULT_KEEPALIVE_COUNT  5
105static int keepalive_count = DEFAULT_KEEPALIVE_COUNT;
106module_param(keepalive_count, int, 0644);
107MODULE_PARM_DESC(keepalive_count, "# missed probes == dead");
108
109static int keepalive_intvl = 5;
110module_param(keepalive_intvl, int, 0644);
111MODULE_PARM_DESC(keepalive_intvl, "seconds between probes");
112
113static int enable_csum;
114module_param(enable_csum, int, 0644);
115MODULE_PARM_DESC(enable_csum, "enable check sum");
116
117static int inject_csum_error;
118module_param(inject_csum_error, int, 0644);
119MODULE_PARM_DESC(inject_csum_error, "set non-zero to inject a checksum error");
120
121static int nonblk_zcack = 1;
122module_param(nonblk_zcack, int, 0644);
123MODULE_PARM_DESC(nonblk_zcack, "always send ZC-ACK on non-blocking connection");
124
125static unsigned int zc_min_payload = (16 << 10);
126module_param(zc_min_payload, int, 0644);
127MODULE_PARM_DESC(zc_min_payload, "minimum payload size to zero copy");
128
129static unsigned int zc_recv;
130module_param(zc_recv, int, 0644);
131MODULE_PARM_DESC(zc_recv, "enable ZC recv for Chelsio driver");
132
133static unsigned int zc_recv_min_nfrags = 16;
134module_param(zc_recv_min_nfrags, int, 0644);
135MODULE_PARM_DESC(zc_recv_min_nfrags, "minimum # of fragments to enable ZC recv");
136
137
138#if SOCKNAL_VERSION_DEBUG
139static int protocol = 3;
140module_param(protocol, int, 0644);
141MODULE_PARM_DESC(protocol, "protocol version");
142#endif
143
144ksock_tunables_t ksocknal_tunables;
145
146int 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};
189