1c0dd49bdSEiji Ota /*
216e76cddSagiri  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
3c0dd49bdSEiji Ota  */
416e76cddSagiri 
5c0dd49bdSEiji Ota /*
616e76cddSagiri  * This file contains code imported from the OFED rds source file ib_sysctl.c
716e76cddSagiri  * Oracle elects to have and use the contents of ib_sysctl.c under and governed
816e76cddSagiri  * by the OpenIB.org BSD license (see below for full license text). However,
916e76cddSagiri  * the following notice accompanied the original version of this file:
10c0dd49bdSEiji Ota  */
11c0dd49bdSEiji Ota 
12c0dd49bdSEiji Ota /*
13c0dd49bdSEiji Ota  * Copyright (c) 2006 Oracle.  All rights reserved.
14c0dd49bdSEiji Ota  *
15c0dd49bdSEiji Ota  * This software is available to you under a choice of one of two
16c0dd49bdSEiji Ota  * licenses.  You may choose to be licensed under the terms of the GNU
17c0dd49bdSEiji Ota  * General Public License (GPL) Version 2, available from the file
18c0dd49bdSEiji Ota  * COPYING in the main directory of this source tree, or the
19c0dd49bdSEiji Ota  * OpenIB.org BSD license below:
20c0dd49bdSEiji Ota  *
21c0dd49bdSEiji Ota  *     Redistribution and use in source and binary forms, with or
22c0dd49bdSEiji Ota  *     without modification, are permitted provided that the following
23c0dd49bdSEiji Ota  *     conditions are met:
24c0dd49bdSEiji Ota  *
25c0dd49bdSEiji Ota  *      - Redistributions of source code must retain the above
26c0dd49bdSEiji Ota  *        copyright notice, this list of conditions and the following
27c0dd49bdSEiji Ota  *        disclaimer.
28c0dd49bdSEiji Ota  *
29c0dd49bdSEiji Ota  *      - Redistributions in binary form must reproduce the above
30c0dd49bdSEiji Ota  *        copyright notice, this list of conditions and the following
31c0dd49bdSEiji Ota  *        disclaimer in the documentation and/or other materials
32c0dd49bdSEiji Ota  *        provided with the distribution.
33c0dd49bdSEiji Ota  *
34c0dd49bdSEiji Ota  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
35c0dd49bdSEiji Ota  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
36c0dd49bdSEiji Ota  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
37c0dd49bdSEiji Ota  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
38c0dd49bdSEiji Ota  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
39c0dd49bdSEiji Ota  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
40c0dd49bdSEiji Ota  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
41c0dd49bdSEiji Ota  * SOFTWARE.
42c0dd49bdSEiji Ota  *
43c0dd49bdSEiji Ota  */
44c0dd49bdSEiji Ota #include <sys/ib/clients/rdsv3/ib.h>
45b27516f5Sagiri #include <sys/ib/clients/rdsv3/rdsv3_debug.h>
46c0dd49bdSEiji Ota 
47c0dd49bdSEiji Ota unsigned long rdsv3_ib_sysctl_max_send_wr = RDSV3_IB_DEFAULT_SEND_WR;
48c0dd49bdSEiji Ota unsigned long rdsv3_ib_sysctl_max_recv_wr = RDSV3_IB_DEFAULT_RECV_WR;
49*5e12ddadSEiji Ota unsigned long rdsv3_ib_sysctl_max_recv_allocation = RDSV3_IB_MAX_RECV_ALLOC;
50c0dd49bdSEiji Ota /* hardware will fail CQ creation long before this */
51c0dd49bdSEiji Ota 
52c0dd49bdSEiji Ota unsigned long rdsv3_ib_sysctl_max_unsig_wrs = 16;
53c0dd49bdSEiji Ota 
54c0dd49bdSEiji Ota unsigned long rdsv3_ib_sysctl_max_unsig_bytes = (16 << 20);
55c0dd49bdSEiji Ota 
563f756f37Sagiri unsigned long rdsv3_max_bcopy_size;
573f756f37Sagiri 
58c0dd49bdSEiji Ota /*
59c0dd49bdSEiji Ota  * This sysctl does nothing.
60c0dd49bdSEiji Ota  *
61c0dd49bdSEiji Ota  * Backwards compatibility with RDS 3.0 wire protocol
62c0dd49bdSEiji Ota  * disables initial FC credit exchange.
63c0dd49bdSEiji Ota  * If it's ever possible to drop 3.0 support,
64c0dd49bdSEiji Ota  * setting this to 1 and moving init/refill of send/recv
65c0dd49bdSEiji Ota  * rings from ib_cm_connect_complete() back into ib_setup_qp()
66c0dd49bdSEiji Ota  * will cause credits to be added before protocol negotiation.
67c0dd49bdSEiji Ota  */
68c0dd49bdSEiji Ota unsigned int rdsv3_ib_sysctl_flow_control = 0;
69c0dd49bdSEiji Ota 
70c0dd49bdSEiji Ota void
rdsv3_ib_sysctl_exit(void)71c0dd49bdSEiji Ota rdsv3_ib_sysctl_exit(void)
72c0dd49bdSEiji Ota {
73c0dd49bdSEiji Ota }
74c0dd49bdSEiji Ota 
75c0dd49bdSEiji Ota int
rdsv3_ib_sysctl_init(void)76c0dd49bdSEiji Ota rdsv3_ib_sysctl_init(void)
77c0dd49bdSEiji Ota {
78b27516f5Sagiri 	RDSV3_DPRINTF2("rdsv3_ib_sysctl_init",
79b27516f5Sagiri 	    "rdsv3_ib_sysctl_max_send_wr = 0x%lx "
80b27516f5Sagiri 	    "rdsv3_ib_sysctl_max_recv_wr = 0x%lx "
81b27516f5Sagiri 	    "rdsv3_ib_sysctl_max_recv_allocation = 0x%lx "
82b27516f5Sagiri 	    "rdsv3_ib_sysctl_max_unsig_wrs = 0x%lx "
83b27516f5Sagiri 	    "rdsv3_ib_sysctl_max_unsig_bytes = 0x%lx "
84b27516f5Sagiri 	    "rdsv3_ib_sysctl_flow_control = 0x%x",
85b27516f5Sagiri 	    rdsv3_ib_sysctl_max_send_wr,
86b27516f5Sagiri 	    rdsv3_ib_sysctl_max_recv_wr,
87b27516f5Sagiri 	    rdsv3_ib_sysctl_max_recv_allocation,
88b27516f5Sagiri 	    rdsv3_ib_sysctl_max_unsig_wrs,
89b27516f5Sagiri 	    rdsv3_ib_sysctl_max_unsig_bytes,
90b27516f5Sagiri 	    rdsv3_ib_sysctl_flow_control);
913f756f37Sagiri 
923f756f37Sagiri 	rdsv3_max_bcopy_size = rdsv3_ib_sysctl_max_send_wr * RDSV3_FRAG_SIZE;
93c0dd49bdSEiji Ota 	return (0);
94c0dd49bdSEiji Ota }
95