1 /*
2  * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
3  * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
4  *
5  * This software is available to you under a choice of one of two
6  * licenses.  You may choose to be licensed under the terms of the GNU
7  * General Public License (GPL) Version 2, available from the file
8  * COPYING in the main directory of this source tree, or the
9  * OpenIB.org BSD license below:
10  *
11  *     Redistribution and use in source and binary forms, with or
12  *     without modification, are permitted provided that the following
13  *     conditions are met:
14  *
15  *	- Redistributions of source code must retain the above
16  *	  copyright notice, this list of conditions and the following
17  *	  disclaimer.
18  *
19  *	- Redistributions in binary form must reproduce the above
20  *	  copyright notice, this list of conditions and the following
21  *	  disclaimer in the documentation and/or other materials
22  *	  provided with the distribution.
23  *
24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31  * SOFTWARE.
32  */
33 
34 #ifndef RXE_PARAM_H
35 #define RXE_PARAM_H
36 
37 #include <uapi/rdma/rdma_user_rxe.h>
38 
39 static inline enum ib_mtu rxe_mtu_int_to_enum(int mtu)
40 {
41 	if (mtu < 256)
42 		return 0;
43 	else if (mtu < 512)
44 		return IB_MTU_256;
45 	else if (mtu < 1024)
46 		return IB_MTU_512;
47 	else if (mtu < 2048)
48 		return IB_MTU_1024;
49 	else if (mtu < 4096)
50 		return IB_MTU_2048;
51 	else
52 		return IB_MTU_4096;
53 }
54 
55 /* Find the IB mtu for a given network MTU. */
56 static inline enum ib_mtu eth_mtu_int_to_enum(int mtu)
57 {
58 	mtu -= RXE_MAX_HDR_LENGTH;
59 
60 	return rxe_mtu_int_to_enum(mtu);
61 }
62 
63 /* default/initial rxe device parameter settings */
64 enum rxe_device_param {
65 	RXE_MAX_MR_SIZE			= -1ull,
66 	RXE_PAGE_SIZE_CAP		= 0xfffff000,
67 	RXE_MAX_QP			= 0x10000,
68 	RXE_MAX_QP_WR			= 0x4000,
69 	RXE_DEVICE_CAP_FLAGS		= IB_DEVICE_BAD_PKEY_CNTR
70 					| IB_DEVICE_BAD_QKEY_CNTR
71 					| IB_DEVICE_AUTO_PATH_MIG
72 					| IB_DEVICE_CHANGE_PHY_PORT
73 					| IB_DEVICE_UD_AV_PORT_ENFORCE
74 					| IB_DEVICE_PORT_ACTIVE_EVENT
75 					| IB_DEVICE_SYS_IMAGE_GUID
76 					| IB_DEVICE_RC_RNR_NAK_GEN
77 					| IB_DEVICE_SRQ_RESIZE
78 					| IB_DEVICE_MEM_MGT_EXTENSIONS
79 					| IB_DEVICE_ALLOW_USER_UNREG,
80 	RXE_MAX_SGE			= 32,
81 	RXE_MAX_WQE_SIZE		= sizeof(struct rxe_send_wqe) +
82 					  sizeof(struct ib_sge) * RXE_MAX_SGE,
83 	RXE_MAX_INLINE_DATA		= RXE_MAX_WQE_SIZE -
84 					  sizeof(struct rxe_send_wqe),
85 	RXE_MAX_SGE_RD			= 32,
86 	RXE_MAX_CQ			= 16384,
87 	RXE_MAX_LOG_CQE			= 15,
88 	RXE_MAX_MR			= 256 * 1024,
89 	RXE_MAX_PD			= 0x7ffc,
90 	RXE_MAX_QP_RD_ATOM		= 128,
91 	RXE_MAX_RES_RD_ATOM		= 0x3f000,
92 	RXE_MAX_QP_INIT_RD_ATOM		= 128,
93 	RXE_MAX_MCAST_GRP		= 8192,
94 	RXE_MAX_MCAST_QP_ATTACH		= 56,
95 	RXE_MAX_TOT_MCAST_QP_ATTACH	= 0x70000,
96 	RXE_MAX_AH			= 100,
97 	RXE_MAX_SRQ			= 960,
98 	RXE_MAX_SRQ_WR			= 0x4000,
99 	RXE_MIN_SRQ_WR			= 1,
100 	RXE_MAX_SRQ_SGE			= 27,
101 	RXE_MIN_SRQ_SGE			= 1,
102 	RXE_MAX_FMR_PAGE_LIST_LEN	= 512,
103 	RXE_MAX_PKEYS			= 64,
104 	RXE_LOCAL_CA_ACK_DELAY		= 15,
105 
106 	RXE_MAX_UCONTEXT		= 512,
107 
108 	RXE_NUM_PORT			= 1,
109 
110 	RXE_MIN_QP_INDEX		= 16,
111 	RXE_MAX_QP_INDEX		= 0x00020000,
112 
113 	RXE_MIN_SRQ_INDEX		= 0x00020001,
114 	RXE_MAX_SRQ_INDEX		= 0x00040000,
115 
116 	RXE_MIN_MR_INDEX		= 0x00000001,
117 	RXE_MAX_MR_INDEX		= 0x00040000,
118 	RXE_MIN_MW_INDEX		= 0x00040001,
119 	RXE_MAX_MW_INDEX		= 0x00060000,
120 	RXE_MAX_PKT_PER_ACK		= 64,
121 
122 	RXE_MAX_UNACKED_PSNS		= 128,
123 
124 	/* Max inflight SKBs per queue pair */
125 	RXE_INFLIGHT_SKBS_PER_QP_HIGH	= 64,
126 	RXE_INFLIGHT_SKBS_PER_QP_LOW	= 16,
127 
128 	/* Delay before calling arbiter timer */
129 	RXE_NSEC_ARB_TIMER_DELAY	= 200,
130 };
131 
132 /* default/initial rxe port parameters */
133 enum rxe_port_param {
134 	RXE_PORT_GID_TBL_LEN		= 1024,
135 	RXE_PORT_PORT_CAP_FLAGS		= RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP,
136 	RXE_PORT_MAX_MSG_SZ		= 0x800000,
137 	RXE_PORT_BAD_PKEY_CNTR		= 0,
138 	RXE_PORT_QKEY_VIOL_CNTR		= 0,
139 	RXE_PORT_LID			= 0,
140 	RXE_PORT_SM_LID			= 0,
141 	RXE_PORT_SM_SL			= 0,
142 	RXE_PORT_LMC			= 0,
143 	RXE_PORT_MAX_VL_NUM		= 1,
144 	RXE_PORT_SUBNET_TIMEOUT		= 0,
145 	RXE_PORT_INIT_TYPE_REPLY	= 0,
146 	RXE_PORT_ACTIVE_WIDTH		= IB_WIDTH_1X,
147 	RXE_PORT_ACTIVE_SPEED		= 1,
148 	RXE_PORT_PKEY_TBL_LEN		= 64,
149 	RXE_PORT_PHYS_STATE		= IB_PORT_PHYS_STATE_POLLING,
150 	RXE_PORT_SUBNET_PREFIX		= 0xfe80000000000000ULL,
151 };
152 
153 /* default/initial port info parameters */
154 enum rxe_port_info_param {
155 	RXE_PORT_INFO_VL_CAP		= 4,	/* 1-8 */
156 	RXE_PORT_INFO_MTU_CAP		= 5,	/* 4096 */
157 	RXE_PORT_INFO_OPER_VL		= 1,	/* 1 */
158 };
159 
160 #endif /* RXE_PARAM_H */
161