summaryrefslogtreecommitdiffstats
path: root/drivers/infiniband/core/uverbs_marshall.c
blob: bb372b4713a41c20dbbf01f6176d731b4dfad3d3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
/*
 * Copyright (c) 2005 Intel Corporation.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <linux/export.h>
#include <rdma/ib_marshall.h>

#define OPA_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)
static int rdma_ah_conv_opa_to_ib(struct ib_device *dev,
				  struct rdma_ah_attr *ib,
				  struct rdma_ah_attr *opa)
{
	struct ib_port_attr port_attr;
	int ret = 0;

	/* Do structure copy and the over-write fields */
	*ib = *opa;

	ib->type = RDMA_AH_ATTR_TYPE_IB;
	rdma_ah_set_grh(ib, NULL, 0, 0, 1, 0);

	if (ib_query_port(dev, opa->port_num, &port_attr)) {
		/* Set to default subnet to indicate error */
		rdma_ah_set_subnet_prefix(ib, OPA_DEFAULT_GID_PREFIX);
		ret = -EINVAL;
	} else {
		rdma_ah_set_subnet_prefix(ib,
					  cpu_to_be64(port_attr.subnet_prefix));
	}
	rdma_ah_set_interface_id(ib, OPA_MAKE_ID(rdma_ah_get_dlid(opa)));
	return ret;
}

void ib_copy_ah_attr_to_user(struct ib_device *device,
			     struct ib_uverbs_ah_attr *dst,
			     struct rdma_ah_attr *ah_attr)
{
	struct rdma_ah_attr *src = ah_attr;
	struct rdma_ah_attr conv_ah;

	memset(&dst->grh.reserved, 0, sizeof(dst->grh.reserved));

	if ((ah_attr->type == RDMA_AH_ATTR_TYPE_OPA) &&
	    (rdma_ah_get_dlid(ah_attr) > be16_to_cpu(IB_LID_PERMISSIVE)) &&
	    (!rdma_ah_conv_opa_to_ib(device, &conv_ah, ah_attr)))
		src = &conv_ah;

	dst->dlid		   = rdma_ah_get_dlid(src);
	dst->sl			   = rdma_ah_get_sl(src);
	dst->src_path_bits	   = rdma_ah_get_path_bits(src);
	dst->static_rate	   = rdma_ah_get_static_rate(src);
	dst->is_global             = rdma_ah_get_ah_flags(src) &
					IB_AH_GRH ? 1 : 0;
	if (dst->is_global) {
		const struct ib_global_route *grh = rdma_ah_read_grh(src);

		memcpy(dst->grh.dgid, grh->dgid.raw, sizeof(grh->dgid));
		dst->grh.flow_label        = grh->flow_label;
		dst->grh.sgid_index        = grh->sgid_index;
		dst->grh.hop_limit         = grh->hop_limit;
		dst->grh.traffic_class     = grh->traffic_class;
	}
	dst->port_num		   = rdma_ah_get_port_num(src);
	dst->reserved 		   = 0;
}
EXPORT_SYMBOL(ib_copy_ah_attr_to_user);

void ib_copy_qp_attr_to_user(struct ib_device *device,
			     struct ib_uverbs_qp_attr *dst,
			     struct ib_qp_attr *src)
{
	dst->qp_state	        = src->qp_state;
	dst->cur_qp_state	= src->cur_qp_state;
	dst->path_mtu		= src->path_mtu;
	dst->path_mig_state	= src->path_mig_state;
	dst->qkey		= src->qkey;
	dst->rq_psn		= src->rq_psn;
	dst->sq_psn		= src->sq_psn;
	dst->dest_qp_num	= src->dest_qp_num;
	dst->qp_access_flags	= src->qp_access_flags;

	dst->max_send_wr	= src->cap.max_send_wr;
	dst->max_recv_wr	= src->cap.max_recv_wr;
	dst->max_send_sge	= src->cap.max_send_sge;
	dst->max_recv_sge	= src->cap.max_recv_sge;
	dst->max_inline_data	= src->cap.max_inline_data;

	ib_copy_ah_attr_to_user(device, &dst->ah_attr, &src->ah_attr);
	ib_copy_ah_attr_to_user(device, &dst->alt_ah_attr, &src->alt_ah_attr);

	dst->pkey_index		= src->pkey_index;
	dst->alt_pkey_index	= src->alt_pkey_index;
	dst->en_sqd_async_notify = src->en_sqd_async_notify;
	dst->sq_draining	= src->sq_draining;
	dst->max_rd_atomic	= src->max_rd_atomic;
	dst->max_dest_rd_atomic	= src->max_dest_rd_atomic;
	dst->min_rnr_timer	= src->min_rnr_timer;
	dst->port_num		= src->port_num;
	dst->timeout		= src->timeout;
	dst->retry_cnt		= src->retry_cnt;
	dst->rnr_retry		= src->rnr_retry;
	dst->alt_port_num	= src->alt_port_num;
	dst->alt_timeout	= src->alt_timeout;
	memset(dst->reserved, 0, sizeof(dst->reserved));
}
EXPORT_SYMBOL(ib_copy_qp_attr_to_user);

static void __ib_copy_path_rec_to_user(struct ib_user_path_rec *dst,
				       struct sa_path_rec *src)
{
	memcpy(dst->dgid, src->dgid.raw, sizeof(src->dgid));
	memcpy(dst->sgid, src->sgid.raw, sizeof(src->sgid));

	dst->dlid		= htons(ntohl(sa_path_get_dlid(src)));
	dst->slid		= htons(ntohl(sa_path_get_slid(src)));
	dst->raw_traffic	= sa_path_get_raw_traffic(src);
	dst->flow_label		= src->flow_label;
	dst->hop_limit		= src->hop_limit;
	dst->traffic_class	= src->traffic_class;
	dst->reversible		= src->reversible;
	dst->numb_path		= src->numb_path;
	dst->pkey		= src->pkey;
	dst->sl			= src->sl;
	dst->mtu_selector	= src->mtu_selector;
	dst->mtu		= src->mtu;
	dst->rate_selector	= src->rate_selector;
	dst->rate		= src->rate;
	dst->packet_life_time	= src->packet_life_time;
	dst->preference		= src->preference;
	dst->packet_life_time_selector = src->packet_life_time_selector;
}

void ib_copy_path_rec_to_user(struct ib_user_path_rec *dst,
			      struct sa_path_rec *src)
{
	struct sa_path_rec rec;

	if (src->rec_type == SA_PATH_REC_TYPE_OPA) {
		sa_convert_path_opa_to_ib(&rec, src);
		__ib_copy_path_rec_to_user(dst, &rec);
		return;
	}
	__ib_copy_path_rec_to_user(dst, src);
}
EXPORT_SYMBOL(ib_copy_path_rec_to_user);

void ib_copy_path_rec_from_user(struct sa_path_rec *dst,
				struct ib_user_path_rec *src)
{
	u32 slid, dlid;

	memset(dst, 0, sizeof(*dst));
	if ((ib_is_opa_gid((union ib_gid *)src->sgid)) ||
	    (ib_is_opa_gid((union ib_gid *)src->dgid))) {
		dst->rec_type = SA_PATH_REC_TYPE_OPA;
		slid = opa_get_lid_from_gid((union ib_gid *)src->sgid);
		dlid = opa_get_lid_from_gid((union ib_gid *)src->dgid);
	} else {
		dst->rec_type = SA_PATH_REC_TYPE_IB;
		slid = ntohs(src->slid);
		dlid = ntohs(src->dlid);
	}
	memcpy(dst->dgid.raw, src->dgid, sizeof dst->dgid);
	memcpy(dst->sgid.raw, src->sgid, sizeof dst->sgid);

	sa_path_set_dlid(dst, dlid);
	sa_path_set_slid(dst, slid);
	sa_path_set_raw_traffic(dst, src->raw_traffic);
	dst->flow_label		= src->flow_label;
	dst->hop_limit		= src->hop_limit;
	dst->traffic_class	= src->traffic_class;
	dst->reversible		= src->reversible;
	dst->numb_path		= src->numb_path;
	dst->pkey		= src->pkey;
	dst->sl			= src->sl;
	dst->mtu_selector	= src->mtu_selector;
	dst->mtu		= src->mtu;
	dst->rate_selector	= src->rate_selector;
	dst->rate		= src->rate;
	dst->packet_life_time	= src->packet_life_time;
	dst->preference		= src->preference;
	dst->packet_life_time_selector = src->packet_life_time_selector;

	/* TODO: No need to set this */
	sa_path_set_dmac_zero(dst);
	sa_path_set_ndev(dst, NULL);
	sa_path_set_ifindex(dst, 0);
}
EXPORT_SYMBOL(ib_copy_path_rec_from_user);