1 /*
2  * Copyright (c) 2005 Intel Corporation.  All rights reserved.
3  *
4  * This software is available to you under a choice of one of two
5  * licenses.  You may choose to be licensed under the terms of the GNU
6  * General Public License (GPL) Version 2, available from the file
7  * COPYING in the main directory of this source tree, or the
8  * OpenIB.org BSD license below:
9  *
10  *     Redistribution and use in source and binary forms, with or
11  *     without modification, are permitted provided that the following
12  *     conditions are met:
13  *
14  *      - Redistributions of source code must retain the above
15  *        copyright notice, this list of conditions and the following
16  *        disclaimer.
17  *
18  *      - Redistributions in binary form must reproduce the above
19  *        copyright notice, this list of conditions and the following
20  *        disclaimer in the documentation and/or other materials
21  *        provided with the distribution.
22  *
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30  * SOFTWARE.
31  */
32 
33 #include <linux/export.h>
34 #include <rdma/ib_marshall.h>
35 
36 #define OPA_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)
37 static int rdma_ah_conv_opa_to_ib(struct ib_device *dev,
38 				  struct rdma_ah_attr *ib,
39 				  struct rdma_ah_attr *opa)
40 {
41 	struct ib_port_attr port_attr;
42 	int ret = 0;
43 
44 	/* Do structure copy and the over-write fields */
45 	*ib = *opa;
46 
47 	ib->type = RDMA_AH_ATTR_TYPE_IB;
48 	rdma_ah_set_grh(ib, NULL, 0, 0, 1, 0);
49 
50 	if (ib_query_port(dev, opa->port_num, &port_attr)) {
51 		/* Set to default subnet to indicate error */
52 		rdma_ah_set_subnet_prefix(ib, OPA_DEFAULT_GID_PREFIX);
53 		ret = -EINVAL;
54 	} else {
55 		rdma_ah_set_subnet_prefix(ib,
56 					  cpu_to_be64(port_attr.subnet_prefix));
57 	}
58 	rdma_ah_set_interface_id(ib, OPA_MAKE_ID(rdma_ah_get_dlid(opa)));
59 	return ret;
60 }
61 
62 void ib_copy_ah_attr_to_user(struct ib_device *device,
63 			     struct ib_uverbs_ah_attr *dst,
64 			     struct rdma_ah_attr *ah_attr)
65 {
66 	struct rdma_ah_attr *src = ah_attr;
67 	struct rdma_ah_attr conv_ah;
68 
69 	memset(&dst->grh.reserved, 0, sizeof(dst->grh.reserved));
70 
71 	if ((ah_attr->type == RDMA_AH_ATTR_TYPE_OPA) &&
72 	    (rdma_ah_get_dlid(ah_attr) > be16_to_cpu(IB_LID_PERMISSIVE)) &&
73 	    (!rdma_ah_conv_opa_to_ib(device, &conv_ah, ah_attr)))
74 		src = &conv_ah;
75 
76 	dst->dlid		   = rdma_ah_get_dlid(src);
77 	dst->sl			   = rdma_ah_get_sl(src);
78 	dst->src_path_bits	   = rdma_ah_get_path_bits(src);
79 	dst->static_rate	   = rdma_ah_get_static_rate(src);
80 	dst->is_global             = rdma_ah_get_ah_flags(src) &
81 					IB_AH_GRH ? 1 : 0;
82 	if (dst->is_global) {
83 		const struct ib_global_route *grh = rdma_ah_read_grh(src);
84 
85 		memcpy(dst->grh.dgid, grh->dgid.raw, sizeof(grh->dgid));
86 		dst->grh.flow_label        = grh->flow_label;
87 		dst->grh.sgid_index        = grh->sgid_index;
88 		dst->grh.hop_limit         = grh->hop_limit;
89 		dst->grh.traffic_class     = grh->traffic_class;
90 	}
91 	dst->port_num		   = rdma_ah_get_port_num(src);
92 	dst->reserved 		   = 0;
93 }
94 EXPORT_SYMBOL(ib_copy_ah_attr_to_user);
95 
96 void ib_copy_qp_attr_to_user(struct ib_device *device,
97 			     struct ib_uverbs_qp_attr *dst,
98 			     struct ib_qp_attr *src)
99 {
100 	dst->qp_state	        = src->qp_state;
101 	dst->cur_qp_state	= src->cur_qp_state;
102 	dst->path_mtu		= src->path_mtu;
103 	dst->path_mig_state	= src->path_mig_state;
104 	dst->qkey		= src->qkey;
105 	dst->rq_psn		= src->rq_psn;
106 	dst->sq_psn		= src->sq_psn;
107 	dst->dest_qp_num	= src->dest_qp_num;
108 	dst->qp_access_flags	= src->qp_access_flags;
109 
110 	dst->max_send_wr	= src->cap.max_send_wr;
111 	dst->max_recv_wr	= src->cap.max_recv_wr;
112 	dst->max_send_sge	= src->cap.max_send_sge;
113 	dst->max_recv_sge	= src->cap.max_recv_sge;
114 	dst->max_inline_data	= src->cap.max_inline_data;
115 
116 	ib_copy_ah_attr_to_user(device, &dst->ah_attr, &src->ah_attr);
117 	ib_copy_ah_attr_to_user(device, &dst->alt_ah_attr, &src->alt_ah_attr);
118 
119 	dst->pkey_index		= src->pkey_index;
120 	dst->alt_pkey_index	= src->alt_pkey_index;
121 	dst->en_sqd_async_notify = src->en_sqd_async_notify;
122 	dst->sq_draining	= src->sq_draining;
123 	dst->max_rd_atomic	= src->max_rd_atomic;
124 	dst->max_dest_rd_atomic	= src->max_dest_rd_atomic;
125 	dst->min_rnr_timer	= src->min_rnr_timer;
126 	dst->port_num		= src->port_num;
127 	dst->timeout		= src->timeout;
128 	dst->retry_cnt		= src->retry_cnt;
129 	dst->rnr_retry		= src->rnr_retry;
130 	dst->alt_port_num	= src->alt_port_num;
131 	dst->alt_timeout	= src->alt_timeout;
132 	memset(dst->reserved, 0, sizeof(dst->reserved));
133 }
134 EXPORT_SYMBOL(ib_copy_qp_attr_to_user);
135 
136 static void __ib_copy_path_rec_to_user(struct ib_user_path_rec *dst,
137 				       struct sa_path_rec *src)
138 {
139 	memcpy(dst->dgid, src->dgid.raw, sizeof(src->dgid));
140 	memcpy(dst->sgid, src->sgid.raw, sizeof(src->sgid));
141 
142 	dst->dlid		= htons(ntohl(sa_path_get_dlid(src)));
143 	dst->slid		= htons(ntohl(sa_path_get_slid(src)));
144 	dst->raw_traffic	= sa_path_get_raw_traffic(src);
145 	dst->flow_label		= src->flow_label;
146 	dst->hop_limit		= src->hop_limit;
147 	dst->traffic_class	= src->traffic_class;
148 	dst->reversible		= src->reversible;
149 	dst->numb_path		= src->numb_path;
150 	dst->pkey		= src->pkey;
151 	dst->sl			= src->sl;
152 	dst->mtu_selector	= src->mtu_selector;
153 	dst->mtu		= src->mtu;
154 	dst->rate_selector	= src->rate_selector;
155 	dst->rate		= src->rate;
156 	dst->packet_life_time	= src->packet_life_time;
157 	dst->preference		= src->preference;
158 	dst->packet_life_time_selector = src->packet_life_time_selector;
159 }
160 
161 void ib_copy_path_rec_to_user(struct ib_user_path_rec *dst,
162 			      struct sa_path_rec *src)
163 {
164 	struct sa_path_rec rec;
165 
166 	if (src->rec_type == SA_PATH_REC_TYPE_OPA) {
167 		sa_convert_path_opa_to_ib(&rec, src);
168 		__ib_copy_path_rec_to_user(dst, &rec);
169 		return;
170 	}
171 	__ib_copy_path_rec_to_user(dst, src);
172 }
173 EXPORT_SYMBOL(ib_copy_path_rec_to_user);
174 
175 void ib_copy_path_rec_from_user(struct sa_path_rec *dst,
176 				struct ib_user_path_rec *src)
177 {
178 	u32 slid, dlid;
179 
180 	memset(dst, 0, sizeof(*dst));
181 	if ((ib_is_opa_gid((union ib_gid *)src->sgid)) ||
182 	    (ib_is_opa_gid((union ib_gid *)src->dgid))) {
183 		dst->rec_type = SA_PATH_REC_TYPE_OPA;
184 		slid = opa_get_lid_from_gid((union ib_gid *)src->sgid);
185 		dlid = opa_get_lid_from_gid((union ib_gid *)src->dgid);
186 	} else {
187 		dst->rec_type = SA_PATH_REC_TYPE_IB;
188 		slid = ntohs(src->slid);
189 		dlid = ntohs(src->dlid);
190 	}
191 	memcpy(dst->dgid.raw, src->dgid, sizeof dst->dgid);
192 	memcpy(dst->sgid.raw, src->sgid, sizeof dst->sgid);
193 
194 	sa_path_set_dlid(dst, dlid);
195 	sa_path_set_slid(dst, slid);
196 	sa_path_set_raw_traffic(dst, src->raw_traffic);
197 	dst->flow_label		= src->flow_label;
198 	dst->hop_limit		= src->hop_limit;
199 	dst->traffic_class	= src->traffic_class;
200 	dst->reversible		= src->reversible;
201 	dst->numb_path		= src->numb_path;
202 	dst->pkey		= src->pkey;
203 	dst->sl			= src->sl;
204 	dst->mtu_selector	= src->mtu_selector;
205 	dst->mtu		= src->mtu;
206 	dst->rate_selector	= src->rate_selector;
207 	dst->rate		= src->rate;
208 	dst->packet_life_time	= src->packet_life_time;
209 	dst->preference		= src->preference;
210 	dst->packet_life_time_selector = src->packet_life_time_selector;
211 
212 	/* TODO: No need to set this */
213 	sa_path_set_dmac_zero(dst);
214 }
215 EXPORT_SYMBOL(ib_copy_path_rec_from_user);
216